initial CVS import

CREDITS

@@ -0,0 +1,38 @@
+The following people have contributed directly or indirectly 
+to the ntfs-3g project.
+
+Please let ntfs-3g-devel@lists.sf.net know if you believe
+someone is missing, or if you prefer not to be listed.
+
+Dominique L Bouix
+Gergely Erdelyi
+Anton Altaparmakov 
+Peter Boross
+Don Bright
+Mario Emmenlauer 
+Yuval Fledel 
+Kano from Kanotix
+Roland Kletzing
+Maarten Lankhorst
+Gergely Madarasz
+Patrick McLean
+Florent Mertens
+Yura Pakhuchiy 
+Miklos Szeredi
+Bartosz Taudul
+Zhanglinbao
+Wade Fitzpatrick
+Carsten Einig
+Adam Cecile
+Bruno Damour
+Ales Fruman
+Curt McDowell
+Thomas Franken
+Jonatan Lambert
+Klaus Knopper
+Zhanglinbao
+Ismail Donmez
+Laszlo Dvornik
+Pallaghy Ajtony
+Szabolcs Szakacsits 
+

Makefile.am

@@ -0,0 +1,17 @@
+
+SUBDIRS = include libntfs-3g src
+
+EXTRA_DIST = AUTHORS CREDITS COPYING INSTALL NEWS README autogen.sh  
+AUTOMAKE_OPTIONS = gnu
+
+MAINTAINERCLEANFILES = configure Makefile.in aclocal.m4 compile depcomp \
+	install-sh ltmain.sh missing config.guess config.sub config.h.in INSTALL
+
+libtool: $(LIBTOOL_DEPS)
+	$(SHELL) ./config.status --recheck
+
+strip:
+	(cd src && $(MAKE) strip) || exit 1;
+
+libs:
+	(cd libntfs-3g && $(MAKE) libs) || exit 1;

README

@@ -0,0 +1,63 @@
+
+INTRODUCTION
+============
+
+The ntfs-3g driver is an open source, freely available read/write NTFS
+driver, which provides safe and fast handling of the Windows XP, Windows 
+Server 2003 and Windows 2000 filesystems. Almost the full POSIX filesystem 
+functionality is supported, the major exceptions are changing the file 
+ownerships and the access rights.
+
+The purpose of the project is to develop, continuously quality test and
+support a trustable, featureful and high performance solution for hardware
+platforms and operating systems whose users need to reliably interoperate
+with NTFS. Besides this practical goal, the project also aims to explore
+the limits of the hybrid, kernel/user space filesystem driver approach,
+performance, reliability and feature richness per invested effort wise.
+
+The driver currently is in BETA status, which means that we weren't
+reported and haven't found any data corruption or loss during ordinary
+driver use and in our extensive quality testing before release of the
+latest version of ntfs-3g, however we are aware of some usability issues
+and driver restrictions which are all documented and planned to be resolved
+in the future.
+
+You can find news, technical answers, problem submission instructions, 
+performance evaluation and other informations on the project web site: 
+
+			http://www.ntfs-3g.org
+
+
+QUICK INSTALLATION
+==================
+	
+Make sure you have the basic Linux development tools and the full FUSE 
+package (http://fuse.sourceforge.net) is already installed correctly on 
+the computer. Then type:  
+
+	./configure
+	make
+	make install      # or 'sudo make install' if you aren't root.
+
+
+USAGE
+=====
+
+If there was no error during installation then the NTFS volume can be
+read-write mounted for everybody the following way (unmount the volume if 
+it was already mounted, and replace /dev/hda1 and /mnt/windows, if needed):
+
+    ntfs-3g /dev/hda1 /mnt/windows
+
+You may also need to set the 'locale' option to make all files with national 
+characters visible. Replace the below hu_HU.utf8 with the appropriate setting. 
+
+    ntfs-3g /dev/hda1 /mnt/windows -o locale=hu_HU.utf8
+
+Please see the ntfs-3g manual page for more options and examples.
+
+You can also make NTFS to be mounted during boot by putting the below 
+line at the end of the /etc/fstab file:
+
+    /dev/hda1 /mnt/windows ntfs-3g defaults 0 0
+

autogen.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+# Run this to generate configure, Makefile.in's, etc
+
+(autoreconf --version) < /dev/null > /dev/null 2>&1 || {
+  (autoconf --version) < /dev/null > /dev/null 2>&1 || {
+    echo
+    echo "**Error**: You must have the GNU Build System (autoconf, automake, "
+    echo "libtool, etc) to update the ntfs-3g build system.  Download the "
+    echo "appropriate packages for your distribution, or get the source "
+    echo "tar balls from ftp://ftp.gnu.org/pub/gnu/."
+    exit 1
+  }
+  echo
+  echo "**Error**: Your version of autoconf is too old (you need at least 2.57)"
+  echo "to update the ntfs-3g build system.  Download the appropriate "
+  echo "updated package for your distribution, or get the source tar ball "
+  echo "from ftp://ftp.gnu.org/pub/gnu/."
+  exit 1
+}
+
+echo Running autoreconf --verbose --install
+autoreconf --force --verbose --install 

configure.ac

@@ -0,0 +1,169 @@
+#
+# configure.ac - Source file to generate "./configure" to prepare package for
+#		 compilation.
+#
+# Copyright (c) 2000-2006 Anton Altaparmakov
+# Copyright (c) 2003 Jan Kratochvil
+# Copyright (c) 2005-2006 Szabolcs Szakacsits
+#
+# This program/include file is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as published
+# by the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program/include file is distributed in the hope that it will be
+# useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program (in the main directory of the NTFS-3G
+# distribution in the file COPYING); if not, write to the Free Software
+# Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+
+AC_PREREQ(2.59)
+AC_INIT([ntfs-3g],[0.20061031-BETA],[ntfs-3g-devel@lists.sf.net])
+
+AC_CANONICAL_HOST([])
+AC_CANONICAL_TARGET([])
+AC_CONFIG_SRCDIR([config.h.in])
+AC_CONFIG_HEADERS([config.h])
+AM_INIT_AUTOMAKE
+AM_MAINTAINER_MODE
+AM_ENABLE_SHARED
+AM_ENABLE_STATIC
+
+AC_PREFIX_DEFAULT(/usr/local)
+if test "x$prefix" = "xNONE"; then
+	prefix=$ac_default_prefix
+	ac_configure_args="$ac_configure_args --prefix $prefix"
+fi
+
+# Command-line options.
+AC_ARG_ENABLE(debug,
+	AS_HELP_STRING(--enable-debug,enable additional debugging code and
+		       output), ,
+	enable_debug=no
+)
+
+AC_ARG_ENABLE(really-static,
+	AS_HELP_STRING(--enable-really-static,create static binaries
+		       for the utilities), ,
+	enable_really_static=no
+)
+AM_CONDITIONAL(REALLYSTATIC, test "$enable_really_static" = yes)
+
+AC_ARG_ENABLE(warnings,
+	AS_HELP_STRING(--enable-warnings,enable additional compiler warnings), ,
+	enable_warnings=no
+)
+
+# Use GNU extensions if available.
+AC_GNU_SOURCE
+
+# Checks for programs.
+AC_PROG_CC
+AC_PROG_GCC_TRADITIONAL
+AC_PROG_INSTALL
+AC_PATH_PROG(RM, rm, rm)
+AC_PROG_LN_S
+AC_PROG_MAKE_SET
+AC_PROG_LIBTOOL
+
+# Libraries often install their metadata .pc files in directories not searched
+# by pkg-config. Let's workaround this. 
+export PKG_CONFIG_PATH=${PKG_CONFIG_PATH}:/usr/lib/pkgconfig:/opt/gnome/lib/pkgconfig:/usr/share/pkgconfig:/usr/local/lib/pkgconfig:$prefix/lib/pkgconfig:/opt/gnome/share/pkgconfig:/usr/local/share/pkgconfig
+
+# Enable large file support.
+AC_SYS_LARGEFILE
+
+case "$target_os" in
+linux*)
+	PKG_CHECK_MODULES(FUSE_MODULE, fuse >= 2.5.0, [ compile_fuse_module=true ],
+	[
+		AC_MSG_ERROR([ntfs-3g requires FUSE >= 2.5.0. Please see http://fuse.sf.net/ or install __all__ the precompiled fuse packages.])
+	]);;
+*)
+		AC_MSG_ERROR([ntfs-3g can be built only under Linux.])
+	;;
+esac
+
+# add --with-extra-includes and --with-extra-libs switch to ./configure
+all_libraries="$all_libraries $USER_LDFLAGS"
+all_includes="$all_includes $USER_INCLUDES"
+AC_SUBST(all_includes)
+AC_SUBST(all_libraries)
+
+# Add our compiler switches not discarding 'CFLAGS' as they may have been
+# passed to us by rpmbuild(8).
+# We add -Wall to enable some compiler warnings.
+CFLAGS="$CFLAGS -Wall"
+
+# Add lots of extra warnings if --enable-warnings was specified.
+if test "$enable_warnings" = "yes"; then
+	CFLAGS="$CFLAGS -W -Wall -Waggregate-return -Wbad-function-cast -Wcast-align -Wcast-qual -Wdisabled-optimization -Wdiv-by-zero -Wfloat-equal -Winline -Wmissing-declarations -Wmissing-format-attribute -Wmissing-noreturn -Wmissing-prototypes -Wmultichar -Wnested-externs -Wpointer-arith -Wredundant-decls -Wshadow -Wsign-compare -Wstrict-prototypes -Wundef -Wwrite-strings"
+fi
+
+# Add debugging switches if --enable-debug was specified.
+if test "$enable_debug" = "yes"; then
+	CFLAGS="$CFLAGS -ggdb3 -DDEBUG"
+fi
+
+AC_SUBST(CFLAGS)
+AC_SUBST(CPPFLAGS)
+AC_SUBST(LDFLAGS)
+AC_SUBST(LIBS)
+
+AC_SUBST(LIBNTFS_3G_CFLAGS)
+
+AC_SUBST(AUTODIRS)
+
+# Checks for libraries.
+
+# Checks for header files.
+AC_HEADER_STDC
+AC_CHECK_HEADERS([ctype.h fcntl.h libgen.h libintl.h limits.h locale.h \
+	mntent.h stddef.h stdint.h stdlib.h stdio.h stdarg.h string.h \
+	strings.h errno.h time.h unistd.h utime.h wchar.h getopt.h features.h \
+	endian.h byteswap.h sys/byteorder.h sys/endian.h sys/param.h \
+	sys/ioctl.h sys/mount.h sys/stat.h sys/types.h sys/vfs.h \
+	sys/statvfs.h sys/sysmacros.h linux/major.h linux/fd.h linux/hdreg.h \
+	machine/endian.h gcrypt.h windows.h gnutls/pkcs12.h syslog.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_HEADER_STDBOOL
+AC_C_BIGENDIAN(,
+	[AC_DEFINE([WORDS_LITTLEENDIAN], 1,
+	[Define to 1 if your processor stores words with the least significant
+	byte first (like Intel and VAX, unlike Motorola and SPARC).])]
+	,)
+AC_C_CONST
+AC_C_INLINE
+AC_TYPE_OFF_T
+AC_TYPE_SIZE_T
+AC_STRUCT_ST_BLOCKS
+AC_CHECK_MEMBERS([struct stat.st_rdev])
+
+# Checks for library functions.
+AC_FUNC_GETMNTENT
+AC_FUNC_MBRTOWC
+AC_FUNC_MEMCMP
+AC_FUNC_STAT
+AC_FUNC_STRFTIME
+AC_FUNC_UTIME_NULL
+AC_FUNC_VPRINTF
+AC_CHECK_FUNCS([atexit basename dup2 fdatasync getopt_long hasmntopt mbsinit \
+	memmove memset realpath regcomp setlocale setxattr strcasecmp strchr \
+	strdup strerror strnlen strtol strtoul sysconf utime])
+
+# Makefiles to be created by configure.
+AC_CONFIG_FILES([
+	Makefile
+	include/Makefile
+	include/ntfs-3g/Makefile
+	libntfs-3g/Makefile
+	src/Makefile
+	src/ntfs-3g.8
+])
+AC_OUTPUT

include/Makefile.am

@@ -0,0 +1,3 @@
+SUBDIRS = ntfs-3g
+
+MAINTAINERCLEANFILES = Makefile.in

include/ntfs-3g/Makefile.am

@@ -0,0 +1,34 @@
+
+linux_ntfsincludedir = $(includedir)/ntfs-3g
+linux_ntfsinclude_HEADERS = \
+	attrib.h		\
+	attrlist.h		\
+	bitmap.h		\
+	bootsect.h		\
+	collate.h		\
+	compat.h		\
+	compress.h		\
+	debug.h			\
+	device.h		\
+	device_io.h		\
+	dir.h			\
+	endians.h		\
+	index.h			\
+	inode.h			\
+	layout.h		\
+	lcnalloc.h		\
+	list.h			\
+	logfile.h		\
+	logging.h		\
+	mft.h			\
+	mst.h			\
+	ntfstime.h		\
+	runlist.h		\
+	security.h		\
+	support.h		\
+	types.h			\
+	unistr.h		\
+	version.h		\
+	volume.h
+
+MAINTAINERCLEANFILES = Makefile.in

include/ntfs-3g/attrib.h

@@ -0,0 +1,359 @@
+/*
+ * attrib.h - Exports for attribute handling. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2000-2004 Anton Altaparmakov
+ * Copyright (c) 2004-2005 Yura Pakhuchiy
+ * Copyright (c) 2006 Szabolcs Szakacsits
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_ATTRIB_H
+#define _NTFS_ATTRIB_H
+
+/* Forward declarations */
+typedef struct _ntfs_attr ntfs_attr;
+typedef struct _ntfs_attr_search_ctx ntfs_attr_search_ctx;
+
+#include "types.h"
+#include "inode.h"
+#include "unistr.h"
+#include "runlist.h"
+#include "volume.h"
+#include "debug.h"
+#include "logging.h"
+
+extern ntfschar AT_UNNAMED[];
+
+/**
+ * enum ntfs_lcn_special_values - special return values for ntfs_*_vcn_to_lcn()
+ *
+ * Special return values for ntfs_rl_vcn_to_lcn() and ntfs_attr_vcn_to_lcn().
+ *
+ * TODO: Describe them.
+ */
+typedef enum {
+	LCN_HOLE		= -1,	/* Keep this as highest value or die! */
+	LCN_RL_NOT_MAPPED	= -2,
+	LCN_ENOENT		= -3,
+	LCN_EINVAL		= -4,
+	LCN_EIO			= -5,
+} ntfs_lcn_special_values;
+
+/**
+ * struct ntfs_attr_search_ctx - search context used in attribute search functions
+ * @mrec:	buffer containing mft record to search
+ * @attr:	attribute record in @mrec where to begin/continue search
+ * @is_first:	if true lookup_attr() begins search with @attr, else after @attr
+ *
+ * Structure must be initialized to zero before the first call to one of the
+ * attribute search functions. Initialize @mrec to point to the mft record to
+ * search, and @attr to point to the first attribute within @mrec (not necessary
+ * if calling the _first() functions), and set @is_first to TRUE (not necessary
+ * if calling the _first() functions).
+ *
+ * If @is_first is TRUE, the search begins with @attr. If @is_first is FALSE,
+ * the search begins after @attr. This is so that, after the first call to one
+ * of the search attribute functions, we can call the function again, without
+ * any modification of the search context, to automagically get the next
+ * matching attribute.
+ */
+struct _ntfs_attr_search_ctx {
+	MFT_RECORD *mrec;
+	ATTR_RECORD *attr;
+	BOOL is_first;
+	ntfs_inode *ntfs_ino;
+	ATTR_LIST_ENTRY *al_entry;
+	ntfs_inode *base_ntfs_ino;
+	MFT_RECORD *base_mrec;
+	ATTR_RECORD *base_attr;
+};
+
+extern void ntfs_attr_reinit_search_ctx(ntfs_attr_search_ctx *ctx);
+extern ntfs_attr_search_ctx *ntfs_attr_get_search_ctx(ntfs_inode *ni,
+		MFT_RECORD *mrec);
+extern void ntfs_attr_put_search_ctx(ntfs_attr_search_ctx *ctx);
+
+extern int ntfs_attr_lookup(const ATTR_TYPES type, const ntfschar *name,
+		const u32 name_len, const IGNORE_CASE_BOOL ic,
+		const VCN lowest_vcn, const u8 *val, const u32 val_len,
+		ntfs_attr_search_ctx *ctx);
+
+extern ATTR_DEF *ntfs_attr_find_in_attrdef(const ntfs_volume *vol,
+		const ATTR_TYPES type);
+
+/**
+ * ntfs_attrs_walk - syntactic sugar for walking all attributes in an inode
+ * @ctx:	initialised attribute search context
+ *
+ * Syntactic sugar for walking attributes in an inode.
+ *
+ * Return 0 on success and -1 on error with errno set to the error code from
+ * ntfs_attr_lookup().
+ *
+ * Example: When you want to enumerate all attributes in an open ntfs inode
+ *	    @ni, you can simply do:
+ *
+ *	int err;
+ *	ntfs_attr_search_ctx *ctx = ntfs_attr_get_search_ctx(ni, NULL);
+ *	if (!ctx)
+ *		// Error code is in errno. Handle this case.
+ *	while (!(err = ntfs_attrs_walk(ctx))) {
+ *		ATTR_RECORD *attr = ctx->attr;
+ *		// attr now contains the next attribute. Do whatever you want
+ *		// with it and then just continue with the while loop.
+ *	}
+ *	if (err && errno != ENOENT)
+ *		// Ooops. An error occurred! You should handle this case.
+ *	// Now finished with all attributes in the inode.
+ */
+static __inline__ int ntfs_attrs_walk(ntfs_attr_search_ctx *ctx)
+{
+	return ntfs_attr_lookup(AT_UNUSED, NULL, 0, CASE_SENSITIVE, 0,
+			NULL, 0, ctx);
+}
+
+/**
+ * struct ntfs_attr - ntfs in memory non-resident attribute structure
+ * @rl:			if not NULL, the decompressed runlist
+ * @ni:			base ntfs inode to which this attribute belongs
+ * @type:		attribute type
+ * @name:		Unicode name of the attribute
+ * @name_len:		length of @name in Unicode characters
+ * @state:		NTFS attribute specific flags describing this attribute
+ * @allocated_size:	copy from the attribute record
+ * @data_size:		copy from the attribute record
+ * @initialized_size:	copy from the attribute record
+ * @compressed_size:	copy from the attribute record
+ * @compression_block_size:		size of a compression block (cb)
+ * @compression_block_size_bits:	log2 of the size of a cb
+ * @compression_block_clusters:		number of clusters per cb
+ *
+ * This structure exists purely to provide a mechanism of caching the runlist
+ * of an attribute. If you want to operate on a particular attribute extent,
+ * you should not be using this structure at all. If you want to work with a
+ * resident attribute, you should not be using this structure at all. As a
+ * fail-safe check make sure to test NAttrNonResident() and if it is false, you
+ * know you shouldn't be using this structure.
+ *
+ * If you want to work on a resident attribute or on a specific attribute
+ * extent, you should use ntfs_lookup_attr() to retrieve the attribute (extent)
+ * record, edit that, and then write back the mft record (or set the
+ * corresponding ntfs inode dirty for delayed write back).
+ *
+ * @rl is the decompressed runlist of the attribute described by this
+ * structure. Obviously this only makes sense if the attribute is not resident,
+ * i.e. NAttrNonResident() is true. If the runlist hasn't been decompressed yet
+ * @rl is NULL, so be prepared to cope with @rl == NULL.
+ *
+ * @ni is the base ntfs inode of the attribute described by this structure.
+ *
+ * @type is the attribute type (see layout.h for the definition of ATTR_TYPES),
+ * @name and @name_len are the little endian Unicode name and the name length
+ * in Unicode characters of the attribute, respectively.
+ *
+ * @state contains NTFS attribute specific flags describing this attribute
+ * structure. See ntfs_attr_state_bits above.
+ */
+struct _ntfs_attr {
+	runlist_element *rl;
+	ntfs_inode *ni;
+	ATTR_TYPES type;
+	ntfschar *name;
+	u32 name_len;
+	unsigned long state;
+	s64 allocated_size;
+	s64 data_size;
+	s64 initialized_size;
+	s64 compressed_size;
+	u32 compression_block_size;
+	u8 compression_block_size_bits;
+	u8 compression_block_clusters;
+};
+
+/**
+ * enum ntfs_attr_state_bits - bits for the state field in the ntfs_attr structure
+ */
+typedef enum {
+	NA_Initialized,		/* 1: structure is initialized. */
+	NA_NonResident,		/* 1: Attribute is not resident. */
+} ntfs_attr_state_bits;
+
+#define  test_nattr_flag(na, flag)	 test_bit(NA_##flag, (na)->state)
+#define   set_nattr_flag(na, flag)	  set_bit(NA_##flag, (na)->state)
+#define clear_nattr_flag(na, flag)	clear_bit(NA_##flag, (na)->state)
+
+#define NAttrInitialized(na)		 test_nattr_flag(na, Initialized)
+#define NAttrSetInitialized(na)		  set_nattr_flag(na, Initialized)
+#define NAttrClearInitialized(na)	clear_nattr_flag(na, Initialized)
+
+#define NAttrNonResident(na)		 test_nattr_flag(na, NonResident)
+#define NAttrSetNonResident(na)		  set_nattr_flag(na, NonResident)
+#define NAttrClearNonResident(na)	clear_nattr_flag(na, NonResident)
+
+#define GenNAttrIno(func_name,flag)				\
+static inline int NAttr##func_name(ntfs_attr *na)		\
+{								\
+	if (na->type == AT_DATA && na->name == AT_UNNAMED)	\
+		return (na->ni->flags & FILE_ATTR_##flag);	\
+	return 0;						\
+}								\
+static inline void NAttrSet##func_name(ntfs_attr *na)		\
+{								\
+	if (na->type == AT_DATA && na->name == AT_UNNAMED)	\
+		na->ni->flags |= FILE_ATTR_##flag;		\
+	else							\
+		ntfs_log_trace("BUG! Should be called only for "\
+			"unnamed data attribute.\n");		\
+}								\
+static inline void NAttrClear##func_name(ntfs_attr *na)		\
+{								\
+	if (na->type == AT_DATA && na->name == AT_UNNAMED)	\
+		na->ni->flags &= ~FILE_ATTR_##flag;		\
+}
+
+GenNAttrIno(Compressed, COMPRESSED)
+GenNAttrIno(Encrypted, ENCRYPTED)
+GenNAttrIno(Sparse, SPARSE_FILE)
+
+/**
+ * union attr_val - Union of all known attribute values
+ *
+ * For convenience. Used in the attr structure.
+ */
+typedef union {
+	u8 _default;	/* Unnamed u8 to serve as default when just using
+			   a_val without specifying any of the below. */
+	STANDARD_INFORMATION std_inf;
+	ATTR_LIST_ENTRY al_entry;
+	FILE_NAME_ATTR filename;
+	OBJECT_ID_ATTR obj_id;
+	SECURITY_DESCRIPTOR_ATTR sec_desc;
+	VOLUME_NAME vol_name;
+	VOLUME_INFORMATION vol_inf;
+	DATA_ATTR data;
+	INDEX_ROOT index_root;
+	INDEX_BLOCK index_blk;
+	BITMAP_ATTR bmp;
+	REPARSE_POINT reparse;
+	EA_INFORMATION ea_inf;
+	EA_ATTR ea;
+	PROPERTY_SET property_set;
+	LOGGED_UTILITY_STREAM logged_util_stream;
+	EFS_ATTR_HEADER efs;
+} attr_val;
+
+extern void ntfs_attr_init(ntfs_attr *na, const BOOL non_resident,
+		const BOOL compressed, const BOOL encrypted, const BOOL sparse,
+		const s64 allocated_size, const s64 data_size,
+		const s64 initialized_size, const s64 compressed_size,
+		const u8 compression_unit);
+
+extern ntfs_attr *ntfs_attr_open(ntfs_inode *ni, const ATTR_TYPES type,
+		ntfschar *name, u32 name_len);
+extern void ntfs_attr_close(ntfs_attr *na);
+
+extern s64 ntfs_attr_pread(ntfs_attr *na, const s64 pos, s64 count,
+		void *b);
+extern s64 ntfs_attr_pwrite(ntfs_attr *na, const s64 pos, s64 count,
+		const void *b);
+
+extern void *ntfs_attr_readall(ntfs_inode *ni, const ATTR_TYPES type,
+			       ntfschar *name, u32 name_len, s64 *data_size);
+
+extern s64 ntfs_attr_mst_pread(ntfs_attr *na, const s64 pos,
+		const s64 bk_cnt, const u32 bk_size, void *dst);
+extern s64 ntfs_attr_mst_pwrite(ntfs_attr *na, const s64 pos,
+		s64 bk_cnt, const u32 bk_size, void *src);
+
+extern int ntfs_attr_map_runlist(ntfs_attr *na, VCN vcn);
+extern int ntfs_attr_map_whole_runlist(ntfs_attr *na);
+
+extern LCN ntfs_attr_vcn_to_lcn(ntfs_attr *na, const VCN vcn);
+extern runlist_element *ntfs_attr_find_vcn(ntfs_attr *na, const VCN vcn);
+
+extern int ntfs_attr_size_bounds_check(const ntfs_volume *vol,
+		const ATTR_TYPES type, const s64 size);
+extern int ntfs_attr_can_be_non_resident(const ntfs_volume *vol,
+		const ATTR_TYPES type);
+extern int ntfs_attr_can_be_resident(const ntfs_volume *vol,
+		const ATTR_TYPES type);
+
+extern int ntfs_make_room_for_attr(MFT_RECORD *m, u8 *pos, u32 size);
+
+extern int ntfs_resident_attr_record_add(ntfs_inode *ni, ATTR_TYPES type,
+		ntfschar *name, u8 name_len, u8 *val, u32 size,
+		ATTR_FLAGS flags);
+extern int ntfs_non_resident_attr_record_add(ntfs_inode *ni, ATTR_TYPES type,
+		ntfschar *name, u8 name_len, VCN lowest_vcn, int dataruns_size,
+		ATTR_FLAGS flags);
+extern int ntfs_attr_record_rm(ntfs_attr_search_ctx *ctx);
+
+extern int ntfs_attr_add(ntfs_inode *ni, ATTR_TYPES type,
+		ntfschar *name, u8 name_len, u8 *val, s64 size);
+extern int ntfs_attr_rm(ntfs_attr *na);
+
+extern int ntfs_attr_record_resize(MFT_RECORD *m, ATTR_RECORD *a, u32 new_size);
+
+extern int ntfs_resident_attr_value_resize(MFT_RECORD *m, ATTR_RECORD *a,
+		const u32 new_size);
+
+extern int ntfs_attr_record_move_to(ntfs_attr_search_ctx *ctx, ntfs_inode *ni);
+extern int ntfs_attr_record_move_away(ntfs_attr_search_ctx *ctx, int extra);
+
+extern int ntfs_attr_update_mapping_pairs(ntfs_attr *na, VCN from_vcn);
+
+extern int ntfs_attr_truncate(ntfs_attr *na, const s64 newsize);
+
+// FIXME / TODO: Above here the file is cleaned up. (AIA)
+/**
+ * get_attribute_value_length - return the length of the value of an attribute
+ * @a:	pointer to a buffer containing the attribute record
+ *
+ * Return the byte size of the attribute value of the attribute @a (as it
+ * would be after eventual decompression and filling in of holes if sparse).
+ * If we return 0, check errno. If errno is 0 the actual length was 0,
+ * otherwise errno describes the error.
+ *
+ * FIXME: Describe possible errnos.
+ */
+s64 ntfs_get_attribute_value_length(const ATTR_RECORD *a);
+
+/**
+ * get_attribute_value - return the attribute value of an attribute
+ * @vol:	volume on which the attribute is present
+ * @a:		attribute to get the value of
+ * @b:		destination buffer for the attribute value
+ *
+ * Make a copy of the attribute value of the attribute @a into the destination
+ * buffer @b. Note, that the size of @b has to be at least equal to the value
+ * returned by get_attribute_value_length(@a).
+ *
+ * Return number of bytes copied. If this is zero check errno. If errno is 0
+ * then nothing was read due to a zero-length attribute value, otherwise
+ * errno describes the error.
+ */
+s64 ntfs_get_attribute_value(const ntfs_volume *vol, const ATTR_RECORD *a,
+		u8 *b);
+
+void ntfs_attr_name_free(char **name);
+char *ntfs_attr_name_get(const ntfschar *uname, const int uname_len);
+
+int ntfs_attr_exist(ntfs_inode *ni, const ATTR_TYPES type, ntfschar *name,
+		    u32 name_len);
+
+#endif /* defined _NTFS_ATTRIB_H */
+

include/ntfs-3g/attrlist.h

@@ -0,0 +1,51 @@
+/*
+ * attrlist.h - Exports for attribute list attribute handling.  
+ * 		Originated from Linux-NTFS project.
+ *
+ * Copyright (c) 2004 Anton Altaparmakov
+ * Copyright (c) 2004 Yura Pakhuchiy
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_ATTRLIST_H
+#define _NTFS_ATTRLIST_H
+
+#include "attrib.h"
+
+extern int ntfs_attrlist_need(ntfs_inode *ni);
+
+extern int ntfs_attrlist_entry_add(ntfs_inode *ni, ATTR_RECORD *attr);
+extern int ntfs_attrlist_entry_rm(ntfs_attr_search_ctx *ctx);
+
+/**
+ * ntfs_attrlist_mark_dirty - set the attribute list dirty
+ * @ni:		ntfs inode which base inode contain dirty attribute list
+ *
+ * Set the attribute list dirty so it is written out later (at the latest at
+ * ntfs_inode_close() time).
+ *
+ * This function cannot fail.
+ */
+static __inline__ void ntfs_attrlist_mark_dirty(ntfs_inode *ni)
+{
+	if (ni->nr_extents == -1)
+		NInoAttrListSetDirty(ni->base_ni);
+	else
+		NInoAttrListSetDirty(ni);
+}
+
+#endif /* defined _NTFS_ATTRLIST_H */

include/ntfs-3g/bitmap.h

@@ -0,0 +1,74 @@
+/*
+ * bitmap.h - Exports for bitmap handling. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2000-2004 Anton Altaparmakov
+ * Copyright (c) 2004-2005 Richard Russon
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_BITMAP_H
+#define _NTFS_BITMAP_H
+
+#include "types.h"
+#include "attrib.h"
+
+/*
+ * NOTES:
+ *
+ * - Operations are 8-bit only to ensure the functions work both on little
+ *   and big endian machines! So don't make them 32-bit ops!
+ * - bitmap starts at bit = 0 and ends at bit = bitmap size - 1.
+ * - _Caller_ has to make sure that the bit to operate on is less than the
+ *   size of the bitmap.
+ */
+
+extern void ntfs_bit_set(u8 *bitmap, const u64 bit, const u8 new_value);
+extern char ntfs_bit_get(const u8 *bitmap, const u64 bit);
+extern char ntfs_bit_get_and_set(u8 *bitmap, const u64 bit, const u8 new_value);
+extern int  ntfs_bitmap_set_run(ntfs_attr *na, s64 start_bit, s64 count);
+extern int  ntfs_bitmap_clear_run(ntfs_attr *na, s64 start_bit, s64 count);
+
+/**
+ * ntfs_bitmap_set_bit - set a bit in a bitmap
+ * @na:		attribute containing the bitmap
+ * @bit:	bit to set
+ *
+ * Set the @bit in the bitmap described by the attribute @na.
+ *
+ * On success return 0 and on error return -1 with errno set to the error code.
+ */
+static __inline__ int ntfs_bitmap_set_bit(ntfs_attr *na, s64 bit)
+{
+	return ntfs_bitmap_set_run(na, bit, 1);
+}
+
+/**
+ * ntfs_bitmap_clear_bit - clear a bit in a bitmap
+ * @na:		attribute containing the bitmap
+ * @bit:	bit to clear
+ *
+ * Clear @bit in the bitmap described by the attribute @na.
+ *
+ * On success return 0 and on error return -1 with errno set to the error code.
+ */
+static __inline__ int ntfs_bitmap_clear_bit(ntfs_attr *na, s64 bit)
+{
+	return ntfs_bitmap_clear_run(na, bit, 1);
+}
+
+#endif /* defined _NTFS_BITMAP_H */
+

include/ntfs-3g/bootsect.h

@@ -0,0 +1,47 @@
+/*
+ * bootsect.h - Exports for bootsector record handling. Originated from the Linux-NTFS
+ *		project.
+ *
+ * Copyright (c) 2000-2002 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_BOOTSECT_H
+#define _NTFS_BOOTSECT_H
+
+#include "types.h"
+#include "volume.h"
+#include "layout.h"
+
+/**
+ * is_boot_sector_ntfs - check a boot sector for describing an ntfs volume
+ * @b:		buffer containing the boot sector
+ * @silent:	if 1 don't display progress information
+ *
+ * This function checks the boot sector in @b for describing a valid ntfs
+ * volume. Return TRUE if @b is a valid NTFS boot sector or FALSE otherwise.
+ * If silent is FALSE, progress output will be output to stdout. If silent is
+ * TRUE no output to stdout will occur. Errors/warnings to stderr will occur
+ * disregarding the value of silent (but only if configure was run with
+ * --enable-debug).
+ */
+extern BOOL ntfs_boot_sector_is_ntfs(NTFS_BOOT_SECTOR *b, BOOL silent);
+extern int ntfs_boot_sector_parse(ntfs_volume *vol,
+		const NTFS_BOOT_SECTOR *bs);
+
+#endif /* defined _NTFS_BOOTSECT_H */
+

include/ntfs-3g/collate.h

@@ -0,0 +1,37 @@
+/*
+ * collate.h - Defines for NTFS collation handling.  Originated from the Linux-NTFS
+ *             project.
+ *
+ * Copyright (c) 2004 Anton Altaparmakov
+ * Copyright (c) 2005 Yura Pakhuchiy
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_COLLATE_H
+#define _NTFS_COLLATE_H
+
+#include "types.h"
+#include "volume.h"
+
+#define NTFS_COLLATION_ERROR -2
+
+extern BOOL ntfs_is_collation_rule_supported(COLLATION_RULES cr);
+extern int ntfs_collate(ntfs_volume *vol, COLLATION_RULES cr,
+			const void *data1, const int data1_len,
+			const void *data2, const int data2_len);
+
+#endif /* _NTFS_COLLATE_H */

include/ntfs-3g/compat.h

@@ -0,0 +1,54 @@
+/*
+ * compat.h - Tweaks for Windows compatibility.
+ *
+ * Copyright (c) 2002 Richard Russon
+ * Copyright (c) 2002-2004 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_COMPAT_H
+#define _NTFS_COMPAT_H
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef WINDOWS
+
+#ifndef HAVE_FFS
+#define HAVE_FFS
+extern int ffs(int i);
+#endif /* HAVE_FFS */
+
+#define HAVE_STDIO_H		/* mimic config.h */
+#define HAVE_STDARG_H
+
+#define atoll			_atoi64
+#define fdatasync		commit
+#define __inline__		inline
+#define __attribute__(X)	/*nothing*/
+
+#else /* !defined WINDOWS */
+
+#ifndef O_BINARY
+#define O_BINARY		0		/* unix is binary by default */
+#endif
+
+#endif /* defined WINDOWS */
+
+#endif /* defined _NTFS_COMPAT_H */
+

include/ntfs-3g/compress.h

@@ -0,0 +1,33 @@
+/*
+ * compress.h - Exports for compressed attribute handling. 
+ * 		Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2004 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_COMPRESS_H
+#define _NTFS_COMPRESS_H
+
+#include "types.h"
+#include "attrib.h"
+
+extern s64 ntfs_compressed_attr_pread(ntfs_attr *na, s64 pos, s64 count,
+		void *b);
+
+#endif /* defined _NTFS_COMPRESS_H */
+

include/ntfs-3g/debug.h

@@ -0,0 +1,47 @@
+/*
+ * debug.h - Debugging output functions. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2002-2004 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_DEBUG_H
+#define _NTFS_DEBUG_H
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "logging.h"
+
+struct _runlist_element;
+
+#ifdef DEBUG
+extern void ntfs_debug_runlist_dump(const struct _runlist_element *rl);
+#else
+static __inline__ void ntfs_debug_runlist_dump(const struct _runlist_element *rl __attribute__((unused))) {}
+#endif
+
+#define NTFS_BUG(msg)							\
+{									\
+	int ___i;							\
+	ntfs_log_critical("Bug in %s(): %s\n", __FUNCTION__, msg);	\
+	ntfs_log_debug("Forcing segmentation fault!");			\
+	___i = ((int*)NULL)[1];						\
+}
+
+#endif /* defined _NTFS_DEBUG_H */

include/ntfs-3g/device.h

@@ -0,0 +1,128 @@
+/*
+ * device.h - Exports for low level device io. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2000-2006 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_DEVICE_H
+#define _NTFS_DEVICE_H
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "device_io.h"
+#include "types.h"
+#include "support.h"
+#include "volume.h"
+
+/**
+ * enum ntfs_device_state_bits -
+ *
+ * Defined bits for the state field in the ntfs_device structure.
+ */
+typedef enum {
+	ND_Open,	/* 1: Device is open. */
+	ND_ReadOnly,	/* 1: Device is read-only. */
+	ND_Dirty,	/* 1: Device is dirty, needs sync. */
+	ND_Block,	/* 1: Device is a block device. */
+} ntfs_device_state_bits;
+
+#define  test_ndev_flag(nd, flag)	   test_bit(ND_##flag, (nd)->d_state)
+#define   set_ndev_flag(nd, flag)	    set_bit(ND_##flag, (nd)->d_state)
+#define clear_ndev_flag(nd, flag)	  clear_bit(ND_##flag, (nd)->d_state)
+
+#define NDevOpen(nd)		 test_ndev_flag(nd, Open)
+#define NDevSetOpen(nd)		  set_ndev_flag(nd, Open)
+#define NDevClearOpen(nd)	clear_ndev_flag(nd, Open)
+
+#define NDevReadOnly(nd)	 test_ndev_flag(nd, ReadOnly)
+#define NDevSetReadOnly(nd)	  set_ndev_flag(nd, ReadOnly)
+#define NDevClearReadOnly(nd)	clear_ndev_flag(nd, ReadOnly)
+
+#define NDevDirty(nd)		 test_ndev_flag(nd, Dirty)
+#define NDevSetDirty(nd)	  set_ndev_flag(nd, Dirty)
+#define NDevClearDirty(nd)	clear_ndev_flag(nd, Dirty)
+
+#define NDevBlock(nd)		 test_ndev_flag(nd, Block)
+#define NDevSetBlock(nd)	  set_ndev_flag(nd, Block)
+#define NDevClearBlock(nd)	clear_ndev_flag(nd, Block)
+
+/**
+ * struct ntfs_device -
+ *
+ * The ntfs device structure defining all operations needed to access the low
+ * level device underlying the ntfs volume.
+ */
+struct ntfs_device {
+	struct ntfs_device_operations *d_ops;	/* Device operations. */
+	unsigned long d_state;			/* State of the device. */
+	char *d_name;				/* Name of device. */
+	void *d_private;			/* Private data used by the
+						   device operations. */
+};
+
+struct stat;
+
+/**
+ * struct ntfs_device_operations -
+ *
+ * The ntfs device operations defining all operations that can be performed on
+ * the low level device described by an ntfs device structure.
+ */
+struct ntfs_device_operations {
+	int (*open)(struct ntfs_device *dev, int flags);
+	int (*close)(struct ntfs_device *dev);
+	s64 (*seek)(struct ntfs_device *dev, s64 offset, int whence);
+	s64 (*read)(struct ntfs_device *dev, void *buf, s64 count);
+	s64 (*write)(struct ntfs_device *dev, const void *buf, s64 count);
+	s64 (*pread)(struct ntfs_device *dev, void *buf, s64 count, s64 offset);
+	s64 (*pwrite)(struct ntfs_device *dev, const void *buf, s64 count,
+			s64 offset);
+	int (*sync)(struct ntfs_device *dev);
+	int (*stat)(struct ntfs_device *dev, struct stat *buf);
+	int (*ioctl)(struct ntfs_device *dev, int request, void *argp);
+};
+
+extern struct ntfs_device *ntfs_device_alloc(const char *name, const long state,
+		struct ntfs_device_operations *dops, void *priv_data);
+extern int ntfs_device_free(struct ntfs_device *dev);
+
+extern s64 ntfs_pread(struct ntfs_device *dev, const s64 pos, s64 count,
+		void *b);
+extern s64 ntfs_pwrite(struct ntfs_device *dev, const s64 pos, s64 count,
+		const void *b);
+
+extern s64 ntfs_mst_pread(struct ntfs_device *dev, const s64 pos, s64 count,
+		const u32 bksize, void *b);
+extern s64 ntfs_mst_pwrite(struct ntfs_device *dev, const s64 pos, s64 count,
+		const u32 bksize, void *b);
+
+extern s64 ntfs_cluster_read(const ntfs_volume *vol, const s64 lcn,
+		const s64 count, void *b);
+extern s64 ntfs_cluster_write(const ntfs_volume *vol, const s64 lcn,
+		const s64 count, const void *b);
+
+extern s64 ntfs_device_size_get(struct ntfs_device *dev, int block_size);
+extern s64 ntfs_device_partition_start_sector_get(struct ntfs_device *dev);
+extern int ntfs_device_heads_get(struct ntfs_device *dev);
+extern int ntfs_device_sectors_per_track_get(struct ntfs_device *dev);
+extern int ntfs_device_sector_size_get(struct ntfs_device *dev);
+extern int ntfs_device_block_size_set(struct ntfs_device *dev, int block_size);
+
+#endif /* defined _NTFS_DEVICE_H */

include/ntfs-3g/device_io.h

@@ -0,0 +1,77 @@
+/*
+ * device_io.h - Exports for default device io. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2000-2006 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_DEVICE_IO_H
+#define _NTFS_DEVICE_IO_H
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifndef NO_NTFS_DEVICE_DEFAULT_IO_OPS
+
+#ifndef __CYGWIN32__
+
+/* Not on Cygwin; use standard Unix style low level device operations. */
+#define ntfs_device_default_io_ops ntfs_device_unix_io_ops
+
+#else /* __CYGWIN32__ */
+
+#ifndef HDIO_GETGEO
+#	define HDIO_GETGEO	0x301
+/**
+ * struct hd_geometry -
+ */
+struct hd_geometry {
+	unsigned char heads;
+	unsigned char sectors;
+	unsigned short cylinders;
+	unsigned long start;
+};
+#endif
+#ifndef BLKGETSIZE
+#	define BLKGETSIZE	0x1260
+#endif
+#ifndef BLKSSZGET
+#	define BLKSSZGET	0x1268
+#endif
+#ifndef BLKGETSIZE64
+#	define BLKGETSIZE64	0x80041272
+#endif
+#ifndef BLKBSZSET
+#	define BLKBSZSET	0x40041271
+#endif
+
+/* On Cygwin; use Win32 low level device operations. */
+#define ntfs_device_default_io_ops ntfs_device_win32_io_ops
+
+#endif /* __CYGWIN32__ */
+
+
+/* Forward declaration. */
+struct ntfs_device_operations;
+
+extern struct ntfs_device_operations ntfs_device_default_io_ops;
+
+#endif /* NO_NTFS_DEVICE_DEFAULT_IO_OPS */
+
+#endif /* defined _NTFS_DEVICE_IO_H */
+

include/ntfs-3g/dir.h

@@ -0,0 +1,111 @@
+/*
+ * dir.h - Exports for directory handling. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2002 Anton Altaparmakov
+ * Copyright (c) 2005-2006 Yura Pakhuchiy
+ * Copyright (c) 2004-2005 Richard Russon
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_DIR_H
+#define _NTFS_DIR_H
+
+#include "types.h"
+
+#define PATH_SEP '/'
+
+#ifndef MAX_PATH
+#define MAX_PATH 1024
+#endif
+
+/*
+ * We do not have these under DJGPP, so define our version that do not conflict
+ * with other S_IFs defined under DJGPP.
+ */
+#ifdef DJGPP
+#ifndef S_IFLNK
+#define S_IFLNK  0120000
+#endif
+#ifndef S_ISLNK
+#define S_ISLNK(m)  (((m) & S_IFMT) == S_IFLNK)
+#endif
+#ifndef S_IFSOCK
+#define S_IFSOCK 0140000
+#endif
+#ifndef S_ISSOCK
+#define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
+#endif
+#endif
+
+/*
+ * The little endian Unicode strings $I30, $SII, $SDH, $O, $Q, $R
+ * as a global constant.
+ */
+extern ntfschar NTFS_INDEX_I30[5];
+extern ntfschar NTFS_INDEX_SII[5];
+extern ntfschar NTFS_INDEX_SDH[5];
+extern ntfschar NTFS_INDEX_O[3];
+extern ntfschar NTFS_INDEX_Q[3];
+extern ntfschar NTFS_INDEX_R[3];
+
+extern u64 ntfs_inode_lookup_by_name(ntfs_inode *dir_ni,
+		const ntfschar *uname, const int uname_len);
+
+extern ntfs_inode *ntfs_pathname_to_inode(ntfs_volume *vol, ntfs_inode *parent,
+		const char *pathname);
+
+extern ntfs_inode *ntfs_create(ntfs_inode *dir_ni, ntfschar *name, u8 name_len,
+		dev_t type);
+extern ntfs_inode *ntfs_create_device(ntfs_inode *dir_ni,
+		ntfschar *name, u8 name_len, dev_t type, dev_t dev);
+extern ntfs_inode *ntfs_create_symlink(ntfs_inode *dir_ni,
+		ntfschar *name, u8 name_len, ntfschar *target, u8 target_len);
+extern int ntfs_check_empty_dir(ntfs_inode *ni);
+extern int ntfs_delete(ntfs_inode *ni, ntfs_inode *dir_ni, ntfschar *name,
+		u8 name_len);
+
+extern int ntfs_link(ntfs_inode *ni, ntfs_inode *dir_ni, ntfschar *name,
+		u8 name_len);
+
+/*
+ * File types (adapted from include <linux/fs.h>)
+ */
+#define NTFS_DT_UNKNOWN		0
+#define NTFS_DT_FIFO		1
+#define NTFS_DT_CHR		2
+#define NTFS_DT_DIR		4
+#define NTFS_DT_BLK		6
+#define NTFS_DT_REG		8
+#define NTFS_DT_LNK		10
+#define NTFS_DT_SOCK		12
+#define NTFS_DT_WHT		14
+
+/*
+ * This is the "ntfs_filldir" function type, used by ntfs_readdir() to let
+ * the caller specify what kind of dirent layout it wants to have.
+ * This allows the caller to read directories into their application or
+ * to have different dirent layouts depending on the binary type.
+ */
+typedef int (*ntfs_filldir_t)(void *dirent, const ntfschar *name,
+		const int name_len, const int name_type, const s64 pos,
+		const MFT_REF mref, const unsigned dt_type);
+
+extern int ntfs_readdir(ntfs_inode *dir_ni, s64 *pos,
+		void *dirent, ntfs_filldir_t filldir);
+
+#endif /* defined _NTFS_DIR_H */
+

include/ntfs-3g/endians.h

@@ -0,0 +1,203 @@
+/*
+ * endians.h - Definitions related to handling of byte ordering. 
+ *             Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2000-2005 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_ENDIANS_H
+#define _NTFS_ENDIANS_H
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/*
+ * Notes:
+ *	We define the conversion functions including typecasts since the
+ * defaults don't necessarily perform appropriate typecasts.
+ *	Also, using our own functions means that we can change them if it
+ * turns out that we do need to use the unaligned access macros on
+ * architectures requiring aligned memory accesses...
+ */
+
+#ifdef HAVE_ENDIAN_H
+#include <endian.h>
+#endif
+#ifdef HAVE_SYS_ENDIAN_H
+#include <sys/endian.h>
+#endif
+#ifdef HAVE_MACHINE_ENDIAN_H
+#include <machine/endian.h>
+#endif
+#ifdef HAVE_SYS_BYTEORDER_H
+#include <sys/byteorder.h>
+#endif
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+
+#ifndef __BYTE_ORDER
+#	if defined(_BYTE_ORDER)
+#		define __BYTE_ORDER _BYTE_ORDER
+#		define __LITTLE_ENDIAN _LITTLE_ENDIAN
+#		define __BIG_ENDIAN _BIG_ENDIAN
+#	elif defined(BYTE_ORDER)
+#		define __BYTE_ORDER BYTE_ORDER
+#		define __LITTLE_ENDIAN LITTLE_ENDIAN
+#		define __BIG_ENDIAN BIG_ENDIAN
+#	elif defined(__BYTE_ORDER__)
+#		define __BYTE_ORDER __BYTE_ORDER__
+#		define __LITTLE_ENDIAN __LITTLE_ENDIAN__
+#		define __BIG_ENDIAN __BIG_ENDIAN__
+#	elif (defined(_LITTLE_ENDIAN) && !defined(_BIG_ENDIAN)) || \
+			defined(WORDS_LITTLEENDIAN)
+#		define __BYTE_ORDER 1
+#		define __LITTLE_ENDIAN 1
+#		define __BIG_ENDIAN 0
+#	elif (!defined(_LITTLE_ENDIAN) && defined(_BIG_ENDIAN)) || \
+			defined(WORDS_BIGENDIAN)
+#		define __BYTE_ORDER 0
+#		define __LITTLE_ENDIAN 1
+#		define __BIG_ENDIAN 0
+#	else
+#		error "__BYTE_ORDER is not defined."
+#	endif
+#endif
+
+#define __ntfs_bswap_constant_16(x)		\
+	  (u16)((((u16)(x) & 0xff00) >> 8) |	\
+		(((u16)(x) & 0x00ff) << 8))
+
+#define __ntfs_bswap_constant_32(x)			\
+	  (u32)((((u32)(x) & 0xff000000u) >> 24) |	\
+		(((u32)(x) & 0x00ff0000u) >>  8) |	\
+		(((u32)(x) & 0x0000ff00u) <<  8) |	\
+		(((u32)(x) & 0x000000ffu) << 24))
+
+#define __ntfs_bswap_constant_64(x)				\
+	  (u64)((((u64)(x) & 0xff00000000000000ull) >> 56) |	\
+		(((u64)(x) & 0x00ff000000000000ull) >> 40) |	\
+		(((u64)(x) & 0x0000ff0000000000ull) >> 24) |	\
+		(((u64)(x) & 0x000000ff00000000ull) >>  8) |	\
+		(((u64)(x) & 0x00000000ff000000ull) <<  8) |	\
+		(((u64)(x) & 0x0000000000ff0000ull) << 24) |	\
+		(((u64)(x) & 0x000000000000ff00ull) << 40) |	\
+		(((u64)(x) & 0x00000000000000ffull) << 56))
+
+#ifdef HAVE_BYTESWAP_H
+#	include <byteswap.h>
+#else
+#	define bswap_16(x) __ntfs_bswap_constant_16(x)
+#	define bswap_32(x) __ntfs_bswap_constant_32(x)
+#	define bswap_64(x) __ntfs_bswap_constant_64(x)
+#endif
+
+#if defined(__LITTLE_ENDIAN) && (__BYTE_ORDER == __LITTLE_ENDIAN)
+
+#define __le16_to_cpu(x) (x)
+#define __le32_to_cpu(x) (x)
+#define __le64_to_cpu(x) (x)
+
+#define __cpu_to_le16(x) (x)
+#define __cpu_to_le32(x) (x)
+#define __cpu_to_le64(x) (x)
+
+#define __constant_le16_to_cpu(x) (x)
+#define __constant_le32_to_cpu(x) (x)
+#define __constant_le64_to_cpu(x) (x)
+
+#define __constant_cpu_to_le16(x) (x)
+#define __constant_cpu_to_le32(x) (x)
+#define __constant_cpu_to_le64(x) (x)
+
+#elif defined(__BIG_ENDIAN) && (__BYTE_ORDER == __BIG_ENDIAN)
+
+#define __le16_to_cpu(x) bswap_16(x)
+#define __le32_to_cpu(x) bswap_32(x)
+#define __le64_to_cpu(x) bswap_64(x)
+
+#define __cpu_to_le16(x) bswap_16(x)
+#define __cpu_to_le32(x) bswap_32(x)
+#define __cpu_to_le64(x) bswap_64(x)
+
+#define __constant_le16_to_cpu(x) __ntfs_bswap_constant_16((u16)(x))
+#define __constant_le32_to_cpu(x) __ntfs_bswap_constant_32((u32)(x))
+#define __constant_le64_to_cpu(x) __ntfs_bswap_constant_64((u64)(x))
+
+#define __constant_cpu_to_le16(x) __ntfs_bswap_constant_16((u16)(x))
+#define __constant_cpu_to_le32(x) __ntfs_bswap_constant_32((u32)(x))
+#define __constant_cpu_to_le64(x) __ntfs_bswap_constant_64((u64)(x))
+
+#else
+
+#error "You must define __BYTE_ORDER to be __LITTLE_ENDIAN or __BIG_ENDIAN."
+
+#endif
+
+/* Unsigned from LE to CPU conversion. */
+
+#define le16_to_cpu(x)		(u16)__le16_to_cpu((u16)(x))
+#define le32_to_cpu(x)		(u32)__le32_to_cpu((u32)(x))
+#define le64_to_cpu(x)		(u64)__le64_to_cpu((u64)(x))
+
+#define le16_to_cpup(x)		(u16)__le16_to_cpu(*(const u16*)(x))
+#define le32_to_cpup(x)		(u32)__le32_to_cpu(*(const u32*)(x))
+#define le64_to_cpup(x)		(u64)__le64_to_cpu(*(const u64*)(x))
+
+/* Signed from LE to CPU conversion. */
+
+#define sle16_to_cpu(x)		(s16)__le16_to_cpu((s16)(x))
+#define sle32_to_cpu(x)		(s32)__le32_to_cpu((s32)(x))
+#define sle64_to_cpu(x)		(s64)__le64_to_cpu((s64)(x))
+
+#define sle16_to_cpup(x)	(s16)__le16_to_cpu(*(s16*)(x))
+#define sle32_to_cpup(x)	(s32)__le32_to_cpu(*(s32*)(x))
+#define sle64_to_cpup(x)	(s64)__le64_to_cpu(*(s64*)(x))
+
+/* Unsigned from CPU to LE conversion. */
+
+#define cpu_to_le16(x)		(u16)__cpu_to_le16((u16)(x))
+#define cpu_to_le32(x)		(u32)__cpu_to_le32((u32)(x))
+#define cpu_to_le64(x)		(u64)__cpu_to_le64((u64)(x))
+
+#define cpu_to_le16p(x)		(u16)__cpu_to_le16(*(u16*)(x))
+#define cpu_to_le32p(x)		(u32)__cpu_to_le32(*(u32*)(x))
+#define cpu_to_le64p(x)		(u64)__cpu_to_le64(*(u64*)(x))
+
+/* Signed from CPU to LE conversion. */
+
+#define cpu_to_sle16(x)		(s16)__cpu_to_le16((s16)(x))
+#define cpu_to_sle32(x)		(s32)__cpu_to_le32((s32)(x))
+#define cpu_to_sle64(x)		(s64)__cpu_to_le64((s64)(x))
+
+#define cpu_to_sle16p(x)	(s16)__cpu_to_le16(*(s16*)(x))
+#define cpu_to_sle32p(x)	(s32)__cpu_to_le32(*(s32*)(x))
+#define cpu_to_sle64p(x)	(s64)__cpu_to_le64(*(s64*)(x))
+
+/* Constant endianness conversion defines. */
+
+#define const_le16_to_cpu(x)	__constant_le16_to_cpu(x)
+#define const_le32_to_cpu(x)	__constant_le32_to_cpu(x)
+#define const_le64_to_cpu(x)	__constant_le64_to_cpu(x)
+
+#define const_cpu_to_le16(x)	__constant_cpu_to_le16(x)
+#define const_cpu_to_le32(x)	__constant_cpu_to_le32(x)
+#define const_cpu_to_le64(x)	__constant_cpu_to_le64(x)
+
+#endif /* defined _NTFS_ENDIANS_H */

include/ntfs-3g/index.h

@@ -0,0 +1,131 @@
+/*
+ * index.h - Defines for NTFS index handling.  Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2004 Anton Altaparmakov
+ * Copyright (c) 2004-2005 Richard Russon
+ * Copyright (c) 2005 Yura Pakhuchiy
+ * Copyright (c) 2006 Szabolcs Szakacsits
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_INDEX_H
+#define _NTFS_INDEX_H
+
+#include "attrib.h"
+#include "types.h"
+#include "layout.h"
+#include "inode.h"
+#include "mft.h"
+
+#define  VCN_INDEX_ROOT_PARENT  ((VCN)-2)
+
+#define  MAX_PARENT_VCN		32
+
+/**
+ * struct ntfs_index_context -
+ * @ni:			inode containing the @entry described by this context
+ * @name:		name of the index described by this context
+ * @name_len:		length of the index name
+ * @entry:		index entry (points into @ir or @ia)
+ * @data:		index entry data (points into @entry)
+ * @data_len:		length in bytes of @data
+ * @is_in_root:		TRUE if @entry is in @ir or FALSE if it is in @ia
+ * @ir:			index root if @is_in_root or NULL otherwise
+ * @actx:		attribute search context if in root or NULL otherwise
+ * @ia:			index block if @is_in_root is FALSE or NULL otherwise
+ * @ia_na:		opened INDEX_ALLOCATION attribute
+ * @ib_vcn:		VCN from which @ia where read from
+ * @parent_pos:		parent entries' positions in the index block
+ * @parent_vcn:		entry's parent node or VCN_INDEX_ROOT_PARENT
+ * @new_vcn:            new VCN if we need to create a new index block
+ * @median:		move to the parent if splitting index blocks
+ * @ib_dirty:		TRUE if index block was changed
+ * @block_size:		index block size
+ * @vcn_size_bits:	VCN size bits for this index block
+ *
+ * @ni is the inode this context belongs to.
+ *
+ * @entry is the index entry described by this context.  @data and @data_len
+ * are the index entry data and its length in bytes, respectively.  @data
+ * simply points into @entry.  This is probably what the user is interested in.
+ *
+ * If @is_in_root is TRUE, @entry is in the index root attribute @ir described
+ * by the attribute search context @actx and inode @ni.  @ia, @ib_vcn and
+ * @ib_dirty are undefined in this case.
+ *
+ * If @is_in_root is FALSE, @entry is in the index allocation attribute and @ia
+ * and @ib_vcn point to the index allocation block and VCN where it's placed,
+ * respectively. @ir and @actx are NULL in this case. @ia_na is opened
+ * INDEX_ALLOCATION attribute. @ib_dirty is TRUE if index block was changed and
+ * FALSE otherwise.
+ *
+ * To obtain a context call ntfs_index_ctx_get().
+ *
+ * When finished with the @entry and its @data, call ntfs_index_ctx_put() to
+ * free the context and other associated resources.
+ *
+ * If the index entry was modified, call ntfs_index_entry_mark_dirty() before
+ * the call to ntfs_index_ctx_put() to ensure that the changes are written
+ * to disk.
+ */
+typedef struct {
+	ntfs_inode *ni;
+	ntfschar *name;
+	u32 name_len;
+	INDEX_ENTRY *entry;
+	void *data;
+	u16 data_len;
+	COLLATION_RULES cr;
+	BOOL is_in_root;
+	INDEX_ROOT *ir;
+	ntfs_attr_search_ctx *actx;
+	INDEX_BLOCK *ib;
+	ntfs_attr *ia_na;
+	int parent_pos[MAX_PARENT_VCN];  /* parent entries' positions */
+	VCN ib_vcn;
+	VCN parent_vcn[MAX_PARENT_VCN]; /* entry's parent nodes */
+	int max_depth;	     /* number of the parent nodes 	*/
+	int pindex;	     /* maximum it's the number of the parent nodes  */
+	BOOL ib_dirty;
+	u32 block_size;
+	u8 vcn_size_bits;
+} ntfs_index_context;
+
+extern ntfs_index_context *ntfs_index_ctx_get(ntfs_inode *ni,
+						ntfschar *name, u32 name_len);
+extern void ntfs_index_ctx_put(ntfs_index_context *ictx);
+extern void ntfs_index_ctx_reinit(ntfs_index_context *ictx);
+
+extern int ntfs_index_lookup(const void *key, const int key_len,
+		ntfs_index_context *ictx);
+
+extern int ntfs_index_add_filename(ntfs_inode *ni, FILE_NAME_ATTR *fn,
+		MFT_REF mref);
+extern int ntfs_index_rm(ntfs_index_context *ictx);
+
+extern INDEX_ROOT *ntfs_index_root_get(ntfs_inode *ni, ATTR_RECORD *attr);
+
+extern VCN ntfs_ie_get_vcn(INDEX_ENTRY *ie);
+
+extern void ntfs_index_entry_mark_dirty(ntfs_index_context *ictx);
+
+extern char *ntfs_ie_filename_get(INDEX_ENTRY *ie);
+extern void ntfs_ie_filename_dump(INDEX_ENTRY *ie);
+extern void ntfs_ih_filename_dump(INDEX_HEADER *ih);
+
+#endif /* _NTFS_INDEX_H */
+

include/ntfs-3g/inode.h

@@ -0,0 +1,176 @@
+/*
+ * inode.h - Defines for NTFS inode handling. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2001,2002 Anton Altaparmakov
+ * Copyright (c) 2004-2005 Yura Pakhuchiy
+ * Copyright (c) 2004-2005 Richard Russon
+ * Copyright (c) 2006 Szabolcs Szakacsits
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_INODE_H
+#define _NTFS_INODE_H
+
+/* Forward declaration */
+typedef struct _ntfs_inode ntfs_inode;
+
+#include "types.h"
+#include "layout.h"
+#include "support.h"
+#include "volume.h"
+
+/**
+ * enum ntfs_inode_state_bits -
+ *
+ * Defined bits for the state field in the ntfs_inode structure.
+ * (f) = files only, (d) = directories only
+ */
+typedef enum {
+	NI_Dirty,		/* 1: Mft record needs to be written to disk. */
+
+	/* The NI_AttrList* tests only make sense for base inodes. */
+	NI_AttrList,		/* 1: Mft record contains an attribute list. */
+	NI_AttrListDirty,	/* 1: Attribute list needs to be written to the
+				      mft record and then to disk. */
+	NI_FileNameDirty,	/* 1: FILE_NAME attributes need to be updated
+				      in the index. */
+} ntfs_inode_state_bits;
+
+#define  test_nino_flag(ni, flag)	   test_bit(NI_##flag, (ni)->state)
+#define   set_nino_flag(ni, flag)	    set_bit(NI_##flag, (ni)->state)
+#define clear_nino_flag(ni, flag)	  clear_bit(NI_##flag, (ni)->state)
+
+#define test_and_set_nino_flag(ni, flag)	\
+				   test_and_set_bit(NI_##flag, (ni)->state)
+#define test_and_clear_nino_flag(ni, flag)	\
+				 test_and_clear_bit(NI_##flag, (ni)->state)
+
+#define NInoDirty(ni)				  test_nino_flag(ni, Dirty)
+#define NInoSetDirty(ni)			   set_nino_flag(ni, Dirty)
+#define NInoClearDirty(ni)			 clear_nino_flag(ni, Dirty)
+#define NInoTestAndSetDirty(ni)		  test_and_set_nino_flag(ni, Dirty)
+#define NInoTestAndClearDirty(ni)	test_and_clear_nino_flag(ni, Dirty)
+
+#define NInoAttrList(ni)			  test_nino_flag(ni, AttrList)
+#define NInoSetAttrList(ni)			   set_nino_flag(ni, AttrList)
+#define NInoClearAttrList(ni)			 clear_nino_flag(ni, AttrList)
+
+
+#define  test_nino_al_flag(ni, flag)	 test_nino_flag(ni, AttrList##flag)
+#define   set_nino_al_flag(ni, flag)	  set_nino_flag(ni, AttrList##flag)
+#define clear_nino_al_flag(ni, flag)	clear_nino_flag(ni, AttrList##flag)
+
+#define test_and_set_nino_al_flag(ni, flag)	\
+				 test_and_set_nino_flag(ni, AttrList##flag)
+#define test_and_clear_nino_al_flag(ni, flag)	\
+			       test_and_clear_nino_flag(ni, AttrList##flag)
+
+#define NInoAttrListDirty(ni)			    test_nino_al_flag(ni, Dirty)
+#define NInoAttrListSetDirty(ni)		     set_nino_al_flag(ni, Dirty)
+#define NInoAttrListClearDirty(ni)		   clear_nino_al_flag(ni, Dirty)
+#define NInoAttrListTestAndSetDirty(ni)	    test_and_set_nino_al_flag(ni, Dirty)
+#define NInoAttrListTestAndClearDirty(ni) test_and_clear_nino_al_flag(ni, Dirty)
+
+#define NInoFileNameDirty(ni)			\
+					  test_nino_flag(ni, FileNameDirty)
+#define NInoFileNameSetDirty(ni)		\
+					   set_nino_flag(ni, FileNameDirty)
+#define NInoFileNameClearDirty(ni)		\
+					 clear_nino_flag(ni, FileNameDirty)
+#define NInoFileNameTestAndSetDirty(ni)		\
+				  test_and_set_nino_flag(ni, FileNameDirty)
+#define NInoFileNameTestAndClearDirty(ni)	\
+				test_and_clear_nino_flag(ni, FileNameDirty)
+
+/**
+ * struct _ntfs_inode - The NTFS in-memory inode structure.
+ *
+ * It is just used as an extension to the fields already provided in the VFS
+ * inode.
+ */
+struct _ntfs_inode {
+	u64 mft_no;		/* Inode / mft record number. */
+	MFT_RECORD *mrec;	/* The actual mft record of the inode. */
+	ntfs_volume *vol;	/* Pointer to the ntfs volume of this inode. */
+	unsigned long state;	/* NTFS specific flags describing this inode.
+				   See ntfs_inode_state_bits above. */
+	FILE_ATTR_FLAGS flags;	/* Flags describing the file.
+				   (Copy from STANDARD_INFORMATION) */
+	/*
+	 * Attribute list support (for use by the attribute lookup functions).
+	 * Setup during ntfs_open_inode() for all inodes with attribute lists.
+	 * Only valid if NI_AttrList is set in state.
+	 */
+	u32 attr_list_size;	/* Length of attribute list value in bytes. */
+	u8 *attr_list;		/* Attribute list value itself. */
+	/* Below fields are always valid. */
+	s32 nr_extents;		/* For a base mft record, the number of
+				   attached extent inodes (0 if none), for
+				   extent records this is -1. */
+	union {		/* This union is only used if nr_extents != 0. */
+		ntfs_inode **extent_nis;/* For nr_extents > 0, array of the
+					   ntfs inodes of the extent mft
+					   records belonging to this base
+					   inode which have been loaded. */
+		ntfs_inode *base_ni;	/* For nr_extents == -1, the ntfs
+					   inode of the base mft record. */
+	};
+
+	/* Temp: for directory handling */
+	void *private_data;	/* ntfs_dt containing this inode */
+	int ref_count;
+
+	/* Below fields are valid only for base inode. */
+	s64 data_size;		/* Data size stored in the filename index. */
+	s64 allocated_size;	/* Allocated size stored in the filename
+				   index. (NOTE: Equal to allocated size of
+				   the unnamed data attribute for normal or
+				   encrypted files and to compressed size
+				   of the unnamed data attribute for sparse or
+				   compressed files.) */
+
+	time_t creation_time;
+	time_t last_data_change_time;
+	time_t last_mft_change_time;
+	time_t last_access_time;
+};
+
+extern ntfs_inode *ntfs_inode_allocate(ntfs_volume *vol);
+
+extern ntfs_inode *ntfs_inode_open(ntfs_volume *vol, const MFT_REF mref);
+
+extern int ntfs_inode_close(ntfs_inode *ni);
+
+extern ntfs_inode *ntfs_extent_inode_open(ntfs_inode *base_ni,
+		const MFT_REF mref);
+
+extern int ntfs_inode_attach_all_extents(ntfs_inode *ni);
+
+extern void ntfs_inode_mark_dirty(ntfs_inode *ni);
+
+extern void ntfs_inode_update_atime(ntfs_inode *ni);
+extern void ntfs_inode_update_time(ntfs_inode *ni);
+
+extern int ntfs_inode_sync(ntfs_inode *ni);
+
+extern int ntfs_inode_add_attrlist(ntfs_inode *ni);
+
+extern int ntfs_inode_free_space(ntfs_inode *ni, int size);
+
+extern int ntfs_inode_badclus_bad(u64 mft_no, ATTR_RECORD *a);
+
+#endif /* defined _NTFS_INODE_H */

include/ntfs-3g/lcnalloc.h

@@ -0,0 +1,50 @@
+/*
+ * lcnalloc.h - Exports for cluster (de)allocation. Originated from the Linux-NTFS
+ *		project.
+ *
+ * Copyright (c) 2002 Anton Altaparmakov
+ * Copyright (c) 2004 Yura Pakhuchiy
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_LCNALLOC_H
+#define _NTFS_LCNALLOC_H
+
+#include "types.h"
+#include "runlist.h"
+#include "volume.h"
+
+/**
+ * enum NTFS_CLUSTER_ALLOCATION_ZONES -
+ */
+typedef enum {
+	FIRST_ZONE	= 0,	/* For sanity checking. */
+	MFT_ZONE	= 0,	/* Allocate from $MFT zone. */
+	DATA_ZONE	= 1,	/* Allocate from $DATA zone. */
+	LAST_ZONE	= 1,	/* For sanity checking. */
+} NTFS_CLUSTER_ALLOCATION_ZONES;
+
+extern runlist *ntfs_cluster_alloc(ntfs_volume *vol, VCN start_vcn, s64 count,
+		LCN start_lcn, const NTFS_CLUSTER_ALLOCATION_ZONES zone);
+
+extern int ntfs_cluster_free_from_rl(ntfs_volume *vol, runlist *rl);
+
+extern int ntfs_cluster_free(ntfs_volume *vol, ntfs_attr *na, VCN start_vcn,
+		s64 count);
+
+#endif /* defined _NTFS_LCNALLOC_H */
+

include/ntfs-3g/list.h

@@ -0,0 +1,192 @@
+/*
+ * list.h - Linked list implementation. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2000-2002 Anton Altaparmakov and others
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_LIST_H
+#define _NTFS_LIST_H
+
+/**
+ * struct list_head - Simple doubly linked list implementation.
+ * 
+ * Copied from Linux kernel 2.4.2-ac18 into Linux-NTFS (with minor
+ * modifications). - AIA
+ *
+ * Some of the internal functions ("__xxx") are useful when
+ * manipulating whole lists rather than single entries, as
+ * sometimes we already know the next/prev entries and we can
+ * generate better code by using them directly rather than
+ * using the generic single-entry routines.
+ */
+struct list_head {
+	struct list_head *next, *prev;
+};
+
+#define LIST_HEAD_INIT(name) { &(name), &(name) }
+
+#define LIST_HEAD(name) \
+	struct list_head name = LIST_HEAD_INIT(name)
+
+#define INIT_LIST_HEAD(ptr) do { \
+	(ptr)->next = (ptr); (ptr)->prev = (ptr); \
+} while (0)
+
+/**
+ * __list_add - Insert a new entry between two known consecutive entries.
+ * @new:
+ * @prev:
+ * @next:
+ *
+ * This is only for internal list manipulation where we know the prev/next
+ * entries already!
+ */
+static void __list_add(struct list_head * new,
+		struct list_head * prev, struct list_head * next)
+{
+	next->prev = new;
+	new->next = next;
+	new->prev = prev;
+	prev->next = new;
+}
+
+/**
+ * list_add - add a new entry
+ * @new:	new entry to be added
+ * @head:	list head to add it after
+ *
+ * Insert a new entry after the specified head.
+ * This is good for implementing stacks.
+ */
+static __inline__ void list_add(struct list_head *new, struct list_head *head)
+{
+	__list_add(new, head, head->next);
+}
+
+/**
+ * list_add_tail - add a new entry
+ * @new:	new entry to be added
+ * @head:	list head to add it before
+ *
+ * Insert a new entry before the specified head.
+ * This is useful for implementing queues.
+ */
+static __inline__ void list_add_tail(struct list_head *new, struct list_head *head)
+{
+	__list_add(new, head->prev, head);
+}
+
+/**
+ * __list_del -
+ * @prev:
+ * @next:
+ *
+ * Delete a list entry by making the prev/next entries point to each other.
+ *
+ * This is only for internal list manipulation where we know the prev/next
+ * entries already!
+ */
+static __inline__ void __list_del(struct list_head * prev,
+		struct list_head * next)
+{
+	next->prev = prev;
+	prev->next = next;
+}
+
+/**
+ * list_del - deletes entry from list.
+ * @entry:	the element to delete from the list.
+ *
+ * Note: list_empty on entry does not return true after this, the entry is in
+ * an undefined state.
+ */
+static __inline__ void list_del(struct list_head *entry)
+{
+	__list_del(entry->prev, entry->next);
+}
+
+/**
+ * list_del_init - deletes entry from list and reinitialize it.
+ * @entry:	the element to delete from the list.
+ */
+static __inline__ void list_del_init(struct list_head *entry)
+{
+	__list_del(entry->prev, entry->next);
+	INIT_LIST_HEAD(entry);
+}
+
+/**
+ * list_empty - tests whether a list is empty
+ * @head:	the list to test.
+ */
+static __inline__ int list_empty(struct list_head *head)
+{
+	return head->next == head;
+}
+
+/**
+ * list_splice - join two lists
+ * @list:	the new list to add.
+ * @head:	the place to add it in the first list.
+ */
+static void list_splice(struct list_head *list,
+		struct list_head *head)
+{
+	struct list_head *first = list->next;
+
+	if (first != list) {
+		struct list_head *last = list->prev;
+		struct list_head *at = head->next;
+
+		first->prev = head;
+		head->next = first;
+
+		last->next = at;
+		at->prev = last;
+	}
+}
+
+/**
+ * list_entry - get the struct for this entry
+ * @ptr:	the &struct list_head pointer.
+ * @type:	the type of the struct this is embedded in.
+ * @member:	the name of the list_struct within the struct.
+ */
+#define list_entry(ptr, type, member) \
+	((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
+
+/**
+ * list_for_each - iterate over a list
+ * @pos:	the &struct list_head to use as a loop counter.
+ * @head:	the head for your list.
+ */
+#define list_for_each(pos, head) \
+	for (pos = (head)->next; pos != (head); pos = pos->next)
+
+/**
+ * list_for_each_safe	-	iterate over a list safe against removal of list entry
+ * @pos:	the &struct list_head to use as a loop counter.
+ * @n:		another &struct list_head to use as temporary storage
+ * @head:	the head for your list.
+ */
+#define list_for_each_safe(pos, n, head) \
+	for (pos = (head)->next, n = pos->next; pos != (head); \
+		pos = n, n = pos->next)
+
+#endif /* defined _NTFS_LIST_H */
+

include/ntfs-3g/logfile.h

@@ -0,0 +1,394 @@
+/*
+ * logfile.h - Exports for $LogFile handling.  Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2000-2005 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_LOGFILE_H
+#define _NTFS_LOGFILE_H
+
+#include "types.h"
+#include "endians.h"
+#include "layout.h"
+
+/*
+ * Journal ($LogFile) organization:
+ *
+ * Two restart areas present in the first two pages (restart pages, one restart
+ * area in each page).  When the volume is dismounted they should be identical,
+ * except for the update sequence array which usually has a different update
+ * sequence number.
+ *
+ * These are followed by log records organized in pages headed by a log record
+ * header going up to log file size.  Not all pages contain log records when a
+ * volume is first formatted, but as the volume ages, all records will be used.
+ * When the log file fills up, the records at the beginning are purged (by
+ * modifying the oldest_lsn to a higher value presumably) and writing begins
+ * at the beginning of the file.  Effectively, the log file is viewed as a
+ * circular entity.
+ *
+ * NOTE: Windows NT, 2000, and XP all use log file version 1.1 but they accept
+ * versions <= 1.x, including 0.-1.  (Yes, that is a minus one in there!)  We
+ * probably only want to support 1.1 as this seems to be the current version
+ * and we don't know how that differs from the older versions.  The only
+ * exception is if the journal is clean as marked by the two restart pages
+ * then it doesn't matter whether we are on an earlier version.  We can just
+ * reinitialize the logfile and start again with version 1.1.
+ */
+
+/* Some $LogFile related constants. */
+#define MaxLogFileSize		0x100000000ULL
+#define DefaultLogPageSize	4096
+#define MinLogRecordPages	48
+
+/**
+ * struct RESTART_PAGE_HEADER - Log file restart page header.
+ *
+ * Begins the restart area.
+ */
+typedef struct {
+/*Ofs*/
+/*  0	NTFS_RECORD; -- Unfolded here as gcc doesn't like unnamed structs. */
+/*  0*/	NTFS_RECORD_TYPES magic;/* The magic is "RSTR". */
+/*  4*/	le16 usa_ofs;		/* See NTFS_RECORD definition in layout.h.
+				   When creating, set this to be immediately
+				   after this header structure (without any
+				   alignment). */
+/*  6*/	le16 usa_count;		/* See NTFS_RECORD definition in layout.h. */
+
+/*  8*/	leLSN chkdsk_lsn;	/* The last log file sequence number found by
+				   chkdsk.  Only used when the magic is changed
+				   to "CHKD".  Otherwise this is zero. */
+/* 16*/	le32 system_page_size;	/* Byte size of system pages when the log file
+				   was created, has to be >= 512 and a power of
+				   2.  Use this to calculate the required size
+				   of the usa (usa_count) and add it to usa_ofs.
+				   Then verify that the result is less than the
+				   value of the restart_area_offset. */
+/* 20*/	le32 log_page_size;	/* Byte size of log file pages, has to be >=
+				   512 and a power of 2.  The default is 4096
+				   and is used when the system page size is
+				   between 4096 and 8192.  Otherwise this is
+				   set to the system page size instead. */
+/* 24*/	le16 restart_area_offset;/* Byte offset from the start of this header to
+				   the RESTART_AREA.  Value has to be aligned
+				   to 8-byte boundary.  When creating, set this
+				   to be after the usa. */
+/* 26*/	sle16 minor_ver;	/* Log file minor version.  Only check if major
+				   version is 1. */
+/* 28*/	sle16 major_ver;	/* Log file major version.  We only support
+				   version 1.1. */
+/* sizeof() = 30 (0x1e) bytes */
+} __attribute__((__packed__)) RESTART_PAGE_HEADER;
+
+/*
+ * Constant for the log client indices meaning that there are no client records
+ * in this particular client array.  Also inside the client records themselves,
+ * this means that there are no client records preceding or following this one.
+ */
+#define LOGFILE_NO_CLIENT	const_cpu_to_le16(0xffff)
+#define LOGFILE_NO_CLIENT_CPU	0xffff
+
+/*
+ * These are the so far known RESTART_AREA_* flags (16-bit) which contain
+ * information about the log file in which they are present.
+ */
+enum {
+	RESTART_VOLUME_IS_CLEAN	= const_cpu_to_le16(0x0002),
+	RESTART_SPACE_FILLER	= 0xffff, /* gcc: Force enum bit width to 16. */
+} __attribute__((__packed__));
+
+typedef le16 RESTART_AREA_FLAGS;
+
+/**
+ * struct RESTART_AREA - Log file restart area record.
+ *
+ * The offset of this record is found by adding the offset of the
+ * RESTART_PAGE_HEADER to the restart_area_offset value found in it.
+ * See notes at restart_area_offset above.
+ */
+typedef struct {
+/*Ofs*/
+/*  0*/	leLSN current_lsn;	/* The current, i.e. last LSN inside the log
+				   when the restart area was last written.
+				   This happens often but what is the interval?
+				   Is it just fixed time or is it every time a
+				   check point is written or something else?
+				   On create set to 0. */
+/*  8*/	le16 log_clients;	/* Number of log client records in the array of
+				   log client records which follows this
+				   restart area.  Must be 1.  */
+/* 10*/	le16 client_free_list;	/* The index of the first free log client record
+				   in the array of log client records.
+				   LOGFILE_NO_CLIENT means that there are no
+				   free log client records in the array.
+				   If != LOGFILE_NO_CLIENT, check that
+				   log_clients > client_free_list.  On Win2k
+				   and presumably earlier, on a clean volume
+				   this is != LOGFILE_NO_CLIENT, and it should
+				   be 0, i.e. the first (and only) client
+				   record is free and thus the logfile is
+				   closed and hence clean.  A dirty volume
+				   would have left the logfile open and hence
+				   this would be LOGFILE_NO_CLIENT.  On WinXP
+				   and presumably later, the logfile is always
+				   open, even on clean shutdown so this should
+				   always be LOGFILE_NO_CLIENT. */
+/* 12*/	le16 client_in_use_list;/* The index of the first in-use log client
+				   record in the array of log client records.
+				   LOGFILE_NO_CLIENT means that there are no
+				   in-use log client records in the array.  If
+				   != LOGFILE_NO_CLIENT check that log_clients
+				   > client_in_use_list.  On Win2k and
+				   presumably earlier, on a clean volume this
+				   is LOGFILE_NO_CLIENT, i.e. there are no
+				   client records in use and thus the logfile
+				   is closed and hence clean.  A dirty volume
+				   would have left the logfile open and hence
+				   this would be != LOGFILE_NO_CLIENT, and it
+				   should be 0, i.e. the first (and only)
+				   client record is in use.  On WinXP and
+				   presumably later, the logfile is always
+				   open, even on clean shutdown so this should
+				   always be 0. */
+/* 14*/	RESTART_AREA_FLAGS flags;/* Flags modifying LFS behaviour.  On Win2k
+				   and presumably earlier this is always 0.  On
+				   WinXP and presumably later, if the logfile
+				   was shutdown cleanly, the second bit,
+				   RESTART_VOLUME_IS_CLEAN, is set.  This bit
+				   is cleared when the volume is mounted by
+				   WinXP and set when the volume is dismounted,
+				   thus if the logfile is dirty, this bit is
+				   clear.  Thus we don't need to check the
+				   Windows version to determine if the logfile
+				   is clean.  Instead if the logfile is closed,
+				   we know it must be clean.  If it is open and
+				   this bit is set, we also know it must be
+				   clean.  If on the other hand the logfile is
+				   open and this bit is clear, we can be almost
+				   certain that the logfile is dirty. */
+/* 16*/	le32 seq_number_bits;	/* How many bits to use for the sequence
+				   number.  This is calculated as 67 - the
+				   number of bits required to store the logfile
+				   size in bytes and this can be used in with
+				   the specified file_size as a consistency
+				   check. */
+/* 20*/	le16 restart_area_length;/* Length of the restart area including the
+				   client array.  Following checks required if
+				   version matches.  Otherwise, skip them.
+				   restart_area_offset + restart_area_length
+				   has to be <= system_page_size.  Also,
+				   restart_area_length has to be >=
+				   client_array_offset + (log_clients *
+				   sizeof(log client record)). */
+/* 22*/	le16 client_array_offset;/* Offset from the start of this record to
+				   the first log client record if versions are
+				   matched.  When creating, set this to be
+				   after this restart area structure, aligned
+				   to 8-bytes boundary.  If the versions do not
+				   match, this is ignored and the offset is
+				   assumed to be (sizeof(RESTART_AREA) + 7) &
+				   ~7, i.e. rounded up to first 8-byte
+				   boundary.  Either way, client_array_offset
+				   has to be aligned to an 8-byte boundary.
+				   Also, restart_area_offset +
+				   client_array_offset has to be <= 510.
+				   Finally, client_array_offset + (log_clients
+				   * sizeof(log client record)) has to be <=
+				   system_page_size.  On Win2k and presumably
+				   earlier, this is 0x30, i.e. immediately
+				   following this record.  On WinXP and
+				   presumably later, this is 0x40, i.e. there
+				   are 16 extra bytes between this record and
+				   the client array.  This probably means that
+				   the RESTART_AREA record is actually bigger
+				   in WinXP and later. */
+/* 24*/	sle64 file_size;	/* Usable byte size of the log file.  If the
+				   restart_area_offset + the offset of the
+				   file_size are > 510 then corruption has
+				   occurred.  This is the very first check when
+				   starting with the restart_area as if it
+				   fails it means that some of the above values
+				   will be corrupted by the multi sector
+				   transfer protection.  The file_size has to
+				   be rounded down to be a multiple of the
+				   log_page_size in the RESTART_PAGE_HEADER and
+				   then it has to be at least big enough to
+				   store the two restart pages and 48 (0x30)
+				   log record pages. */
+/* 32*/	le32 last_lsn_data_length;/* Length of data of last LSN, not including
+				   the log record header.  On create set to
+				   0. */
+/* 36*/	le16 log_record_header_length;/* Byte size of the log record header.
+				   If the version matches then check that the
+				   value of log_record_header_length is a
+				   multiple of 8, i.e.
+				   (log_record_header_length + 7) & ~7 ==
+				   log_record_header_length.  When creating set
+				   it to sizeof(LOG_RECORD_HEADER), aligned to
+				   8 bytes. */
+/* 38*/	le16 log_page_data_offset;/* Offset to the start of data in a log record
+				   page.  Must be a multiple of 8.  On create
+				   set it to immediately after the update
+				   sequence array of the log record page. */
+/* 40*/	le32 restart_log_open_count;/* A counter that gets incremented every
+				   time the logfile is restarted which happens
+				   at mount time when the logfile is opened.
+				   When creating set to a random value.  Win2k
+				   sets it to the low 32 bits of the current
+				   system time in NTFS format (see time.h). */
+/* 44*/	le32 reserved;		/* Reserved/alignment to 8-byte boundary. */
+/* sizeof() = 48 (0x30) bytes */
+} __attribute__((__packed__)) RESTART_AREA;
+
+/**
+ * struct LOG_CLIENT_RECORD - Log client record.
+ *
+ * The offset of this record is found by adding the offset of the
+ * RESTART_AREA to the client_array_offset value found in it.
+ */
+typedef struct {
+/*Ofs*/
+/*  0*/	leLSN oldest_lsn;	/* Oldest LSN needed by this client.  On create
+				   set to 0. */
+/*  8*/	leLSN client_restart_lsn;/* LSN at which this client needs to restart
+				   the volume, i.e. the current position within
+				   the log file.  At present, if clean this
+				   should = current_lsn in restart area but it
+				   probably also = current_lsn when dirty most
+				   of the time.  At create set to 0. */
+/* 16*/	le16 prev_client;	/* The offset to the previous log client record
+				   in the array of log client records.
+				   LOGFILE_NO_CLIENT means there is no previous
+				   client record, i.e. this is the first one.
+				   This is always LOGFILE_NO_CLIENT. */
+/* 18*/	le16 next_client;	/* The offset to the next log client record in
+				   the array of log client records.
+				   LOGFILE_NO_CLIENT means there are no next
+				   client records, i.e. this is the last one.
+				   This is always LOGFILE_NO_CLIENT. */
+/* 20*/	le16 seq_number;	/* On Win2k and presumably earlier, this is set
+				   to zero every time the logfile is restarted
+				   and it is incremented when the logfile is
+				   closed at dismount time.  Thus it is 0 when
+				   dirty and 1 when clean.  On WinXP and
+				   presumably later, this is always 0. */
+/* 22*/	u8 reserved[6];		/* Reserved/alignment. */
+/* 28*/	le32 client_name_length;/* Length of client name in bytes.  Should
+				   always be 8. */
+/* 32*/	ntfschar client_name[64];/* Name of the client in Unicode.  Should
+				   always be "NTFS" with the remaining bytes
+				   set to 0. */
+/* sizeof() = 160 (0xa0) bytes */
+} __attribute__((__packed__)) LOG_CLIENT_RECORD;
+
+/**
+ * struct RECORD_PAGE_HEADER - Log page record page header.
+ *
+ * Each log page begins with this header and is followed by several LOG_RECORD
+ * structures, starting at offset 0x40 (the size of this structure and the
+ * following update sequence array and then aligned to 8 byte boundary, but is
+ * this specified anywhere?).
+ */
+typedef struct {
+/*  0	NTFS_RECORD; -- Unfolded here as gcc doesn't like unnamed structs. */
+	NTFS_RECORD_TYPES magic;/* Usually the magic is "RCRD". */
+	u16 usa_ofs;		/* See NTFS_RECORD definition in layout.h.
+				   When creating, set this to be immediately
+				   after this header structure (without any
+				   alignment). */
+	u16 usa_count;		/* See NTFS_RECORD definition in layout.h. */
+
+	union {
+		LSN last_lsn;
+		s64 file_offset;
+	} __attribute__((__packed__)) copy;
+	u32 flags;
+	u16 page_count;
+	u16 page_position;
+	union {
+		struct {
+			u16 next_record_offset;
+			u8 reserved[6];
+			LSN last_end_lsn;
+		} __attribute__((__packed__)) packed;
+	} __attribute__((__packed__)) header;
+} __attribute__((__packed__)) RECORD_PAGE_HEADER;
+
+/**
+ * enum LOG_RECORD_FLAGS - Possible 16-bit flags for log records.
+ *
+ * (Or is it log record pages?)
+ */
+typedef enum {
+	LOG_RECORD_MULTI_PAGE = const_cpu_to_le16(0x0001),	/* ??? */
+	LOG_RECORD_SIZE_PLACE_HOLDER = 0xffff,
+		/* This has nothing to do with the log record. It is only so
+		   gcc knows to make the flags 16-bit. */
+} __attribute__((__packed__)) LOG_RECORD_FLAGS;
+
+/**
+ * struct LOG_CLIENT_ID - The log client id structure identifying a log client.
+ */
+typedef struct {
+	u16 seq_number;
+	u16 client_index;
+} __attribute__((__packed__)) LOG_CLIENT_ID;
+
+/**
+ * struct LOG_RECORD - Log record header.
+ *
+ * Each log record seems to have a constant size of 0x70 bytes.
+ */
+typedef struct {
+	LSN this_lsn;
+	LSN client_previous_lsn;
+	LSN client_undo_next_lsn;
+	u32 client_data_length;
+	LOG_CLIENT_ID client_id;
+	u32 record_type;
+	u32 transaction_id;
+	u16 flags;
+	u16 reserved_or_alignment[3];
+/* Now are at ofs 0x30 into struct. */
+	u16 redo_operation;
+	u16 undo_operation;
+	u16 redo_offset;
+	u16 redo_length;
+	u16 undo_offset;
+	u16 undo_length;
+	u16 target_attribute;
+	u16 lcns_to_follow;		   /* Number of lcn_list entries
+					      following this entry. */
+/* Now at ofs 0x40. */
+	u16 record_offset;
+	u16 attribute_offset;
+	u32 alignment_or_reserved;
+	VCN target_vcn;
+/* Now at ofs 0x50. */
+	struct {			   /* Only present if lcns_to_follow
+					      is not 0. */
+		LCN lcn;
+	} __attribute__((__packed__)) lcn_list[0];
+} __attribute__((__packed__)) LOG_RECORD;
+
+extern BOOL ntfs_check_logfile(ntfs_attr *log_na, RESTART_PAGE_HEADER **rp);
+extern BOOL ntfs_is_logfile_clean(ntfs_attr *log_na, RESTART_PAGE_HEADER *rp);
+extern int ntfs_empty_logfile(ntfs_attr *na);
+
+#endif /* defined _NTFS_LOGFILE_H */

include/ntfs-3g/logging.h

@@ -0,0 +1,111 @@
+/*
+ * logging.h - Centralised logging. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2005 Richard Russon
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _LOGGING_H_
+#define _LOGGING_H_
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_STDARG_H
+#include <stdarg.h>
+#endif
+
+#include "types.h"
+
+/* Function prototype for the logging handlers */
+typedef int (ntfs_log_handler)(const char *function, const char *file, int line,
+	u32 level, void *data, const char *format, va_list args);
+
+/* Set the logging handler from one of the functions, below. */
+void ntfs_log_set_handler(ntfs_log_handler *handler);
+
+/* Logging handlers */
+ntfs_log_handler ntfs_log_handler_syslog  __attribute__((format(printf, 6, 0)));
+ntfs_log_handler ntfs_log_handler_fprintf __attribute__((format(printf, 6, 0)));
+ntfs_log_handler ntfs_log_handler_null    __attribute__((format(printf, 6, 0)));
+ntfs_log_handler ntfs_log_handler_stdout  __attribute__((format(printf, 6, 0)));
+ntfs_log_handler ntfs_log_handler_outerr  __attribute__((format(printf, 6, 0)));
+ntfs_log_handler ntfs_log_handler_stderr  __attribute__((format(printf, 6, 0)));
+
+/* Enable/disable certain log levels */
+u32 ntfs_log_set_levels(u32 levels);
+u32 ntfs_log_clear_levels(u32 levels);
+u32 ntfs_log_get_levels(void);
+
+/* Enable/disable certain log flags */
+u32 ntfs_log_set_flags(u32 flags);
+u32 ntfs_log_clear_flags(u32 flags);
+u32 ntfs_log_get_flags(void);
+
+/* Turn command-line options into logging flags */
+BOOL ntfs_log_parse_option(const char *option);
+
+int ntfs_log_redirect(const char *function, const char *file, int line,
+	u32 level, void *data, const char *format, ...)
+	__attribute__((format(printf, 6, 7)));
+
+/* Logging levels - Determine what gets logged */
+#define NTFS_LOG_LEVEL_DEBUG	(1 <<  0) /* x = 42 */
+#define NTFS_LOG_LEVEL_TRACE	(1 <<  1) /* Entering function x() */
+#define NTFS_LOG_LEVEL_QUIET	(1 <<  2) /* Quietable output */
+#define NTFS_LOG_LEVEL_INFO	(1 <<  3) /* Volume needs defragmenting */
+#define NTFS_LOG_LEVEL_VERBOSE	(1 <<  4) /* Forced to continue */
+#define NTFS_LOG_LEVEL_PROGRESS	(1 <<  5) /* 54% complete */
+#define NTFS_LOG_LEVEL_WARNING	(1 <<  6) /* You should backup before starting */
+#define NTFS_LOG_LEVEL_ERROR	(1 <<  7) /* Operation failed, no damage done */
+#define NTFS_LOG_LEVEL_PERROR	(1 <<  8) /* Message : standard error description */
+#define NTFS_LOG_LEVEL_CRITICAL	(1 <<  9) /* Operation failed,damage may have occurred */
+
+/* Logging style flags - Manage the style of the output */
+#define NTFS_LOG_FLAG_PREFIX	(1 << 0) /* Prefix messages with "ERROR: ", etc */
+#define NTFS_LOG_FLAG_FILENAME	(1 << 1) /* Show the file origin of the message */
+#define NTFS_LOG_FLAG_LINE	(1 << 2) /* Show the line number of the message */
+#define NTFS_LOG_FLAG_FUNCTION	(1 << 3) /* Show the function name containing the message */
+#define NTFS_LOG_FLAG_ONLYNAME	(1 << 4) /* Only display the filename, not the pathname */
+#define NTFS_LOG_FLAG_COLOUR	(1 << 5) /* Colour highlight some messages */
+
+/* Macros to simplify logging.  One for each level defined above.
+ * Note, ntfs_log_debug/trace have effect only if DEBUG is defined.
+ */
+#define ntfs_log_critical(FORMAT, ARGS...) ntfs_log_redirect(__FUNCTION__,__FILE__,__LINE__,NTFS_LOG_LEVEL_CRITICAL,NULL,FORMAT,##ARGS)
+#define ntfs_log_error(FORMAT, ARGS...) ntfs_log_redirect(__FUNCTION__,__FILE__,__LINE__,NTFS_LOG_LEVEL_ERROR,NULL,FORMAT,##ARGS)
+#define ntfs_log_info(FORMAT, ARGS...) ntfs_log_redirect(__FUNCTION__,__FILE__,__LINE__,NTFS_LOG_LEVEL_INFO,NULL,FORMAT,##ARGS)
+#define ntfs_log_perror(FORMAT, ARGS...) ntfs_log_redirect(__FUNCTION__,__FILE__,__LINE__,NTFS_LOG_LEVEL_PERROR,NULL,FORMAT,##ARGS)
+#define ntfs_log_progress(FORMAT, ARGS...) ntfs_log_redirect(__FUNCTION__,__FILE__,__LINE__,NTFS_LOG_LEVEL_PROGRESS,NULL,FORMAT,##ARGS)
+#define ntfs_log_quiet(FORMAT, ARGS...) ntfs_log_redirect(__FUNCTION__,__FILE__,__LINE__,NTFS_LOG_LEVEL_QUIET,NULL,FORMAT,##ARGS)
+#define ntfs_log_verbose(FORMAT, ARGS...) ntfs_log_redirect(__FUNCTION__,__FILE__,__LINE__,NTFS_LOG_LEVEL_VERBOSE,NULL,FORMAT,##ARGS)
+#define ntfs_log_warning(FORMAT, ARGS...) ntfs_log_redirect(__FUNCTION__,__FILE__,__LINE__,NTFS_LOG_LEVEL_WARNING,NULL,FORMAT,##ARGS)
+
+/* By default debug and trace messages are compiled into the program,
+ * but not displayed.
+ */
+#ifdef DEBUG
+#define ntfs_log_debug(FORMAT, ARGS...) ntfs_log_redirect(__FUNCTION__,__FILE__,__LINE__,NTFS_LOG_LEVEL_DEBUG,NULL,FORMAT,##ARGS)
+#define ntfs_log_trace(FORMAT, ARGS...) ntfs_log_redirect(__FUNCTION__,__FILE__,__LINE__,NTFS_LOG_LEVEL_TRACE,NULL,FORMAT,##ARGS)
+#else
+#define ntfs_log_debug(FORMAT, ARGS...)do {} while (0)
+#define ntfs_log_trace(FORMAT, ARGS...)do {} while (0)
+#endif /* DEBUG */
+
+#endif /* _LOGGING_H_ */
+

include/ntfs-3g/mft.h

@@ -0,0 +1,118 @@
+/*
+ * mft.h - Exports for MFT record handling. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2000-2002 Anton Altaparmakov
+ * Copyright (c) 2004-2005 Richard Russon
+ * Copyright (c) 2006 Szabolcs Szakacsits
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_MFT_H
+#define _NTFS_MFT_H
+
+#include "volume.h"
+#include "inode.h"
+#include "layout.h"
+
+extern int ntfs_mft_records_read(const ntfs_volume *vol, const MFT_REF mref,
+		const s64 count, MFT_RECORD *b);
+
+/**
+ * ntfs_mft_record_read - read a record from the mft
+ * @vol:	volume to read from
+ * @mref:	mft record number to read
+ * @b:		output data buffer
+ *
+ * Read the mft record specified by @mref from volume @vol into buffer @b.
+ * Return 0 on success or -1 on error, with errno set to the error code.
+ *
+ * The read mft record is mst deprotected and is hence ready to use. The caller
+ * should check the record with is_baad_record() in case mst deprotection
+ * failed.
+ *
+ * NOTE: @b has to be at least of size vol->mft_record_size.
+ */
+static __inline__ int ntfs_mft_record_read(const ntfs_volume *vol,
+		const MFT_REF mref, MFT_RECORD *b)
+{
+	return ntfs_mft_records_read(vol, mref, 1, b);
+}
+
+extern int ntfs_file_record_read(const ntfs_volume *vol, const MFT_REF mref,
+		MFT_RECORD **mrec, ATTR_RECORD **attr);
+
+extern int ntfs_mft_records_write(const ntfs_volume *vol, const MFT_REF mref,
+		const s64 count, MFT_RECORD *b);
+
+/**
+ * ntfs_mft_record_write - write an mft record to disk
+ * @vol:	volume to write to
+ * @mref:	mft record number to write
+ * @b:		data buffer containing the mft record to write
+ *
+ * Write the mft record specified by @mref from buffer @b to volume @vol.
+ * Return 0 on success or -1 on error, with errno set to the error code.
+ *
+ * Before the mft record is written, it is mst protected. After the write, it
+ * is deprotected again, thus resulting in an increase in the update sequence
+ * number inside the buffer @b.
+ *
+ * NOTE: @b has to be at least of size vol->mft_record_size.
+ */
+static __inline__ int ntfs_mft_record_write(const ntfs_volume *vol,
+		const MFT_REF mref, MFT_RECORD *b)
+{
+	return ntfs_mft_records_write(vol, mref, 1, b);
+}
+
+/**
+ * ntfs_mft_record_get_data_size - return number of bytes used in mft record @b
+ * @m:		mft record to get the data size of
+ *
+ * Takes the mft record @m and returns the number of bytes used in the record
+ * or 0 on error (i.e. @m is not a valid mft record).  Zero is not a valid size
+ * for an mft record as it at least has to have the MFT_RECORD itself and a
+ * zero length attribute of type AT_END, thus making the minimum size 56 bytes.
+ *
+ * Aside:  The size is independent of NTFS versions 1.x/3.x because the 8-byte
+ * alignment of the first attribute mask the difference in MFT_RECORD size
+ * between NTFS 1.x and 3.x.  Also, you would expect every mft record to
+ * contain an update sequence array as well but that could in theory be
+ * non-existent (don't know if Windows' NTFS driver/chkdsk wouldn't view this
+ * as corruption in itself though).
+ */
+static __inline__ u32 ntfs_mft_record_get_data_size(const MFT_RECORD *m)
+{
+	if (!m || !ntfs_is_mft_record(m->magic))
+		return 0;
+	/* Get the number of used bytes and return it. */
+	return le32_to_cpu(m->bytes_in_use);
+}
+
+extern int ntfs_mft_record_layout(const ntfs_volume *vol, const MFT_REF mref,
+		MFT_RECORD *mrec);
+
+extern int ntfs_mft_record_format(const ntfs_volume *vol, const MFT_REF mref);
+
+extern ntfs_inode *ntfs_mft_record_alloc(ntfs_volume *vol, ntfs_inode *base_ni);
+
+extern int ntfs_mft_record_free(ntfs_volume *vol, ntfs_inode *ni);
+
+extern int ntfs_mft_usn_dec(MFT_RECORD *mrec);
+
+#endif /* defined _NTFS_MFT_H */
+

include/ntfs-3g/misc.h

@@ -0,0 +1,8 @@
+#ifndef _NTFS_MISC_H_
+#define _NTFS_MISC_H_
+
+void *ntfs_calloc(size_t size);
+void *ntfs_malloc(size_t size);
+
+#endif /* _NTFS_MISC_H_ */
+

include/ntfs-3g/mst.h

@@ -0,0 +1,34 @@
+/*
+ * mst.h - Exports for multi sector transfer fixup functions.
+ *         Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2000-2002 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_MST_H
+#define _NTFS_MST_H
+
+#include "types.h"
+#include "layout.h"
+
+extern int ntfs_mst_post_read_fixup(NTFS_RECORD *b, const u32 size);
+extern int ntfs_mst_pre_write_fixup(NTFS_RECORD *b, const u32 size);
+extern void ntfs_mst_post_write_fixup(NTFS_RECORD *b);
+
+#endif /* defined _NTFS_MST_H */
+

include/ntfs-3g/ntfstime.h

@@ -0,0 +1,69 @@
+/*
+ * ntfstime.h - NTFS time related functions.  Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2005 Anton Altaparmakov
+ * Copyright (c) 2005 Yura Pakhuchiy
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_NTFSTIME_H
+#define _NTFS_NTFSTIME_H
+
+#ifdef HAVE_TIME_H
+#include <time.h>
+#endif
+
+#include "types.h"
+
+#define NTFS_TIME_OFFSET ((s64)(369 * 365 + 89) * 24 * 3600 * 10000000)
+
+/**
+ * ntfs2utc - Convert an NTFS time to Unix time
+ * @ntfs_time:  An NTFS time in 100ns units since 1601
+ *
+ * NTFS stores times as the number of 100ns intervals since January 1st 1601 at
+ * 00:00 UTC.  This system will not suffer from Y2K problems until ~57000AD.
+ *
+ * Return:  n  A Unix time (number of seconds since 1970)
+ */
+static __inline__ time_t ntfs2utc(s64 ntfs_time)
+{
+	return (sle64_to_cpu(ntfs_time) - (NTFS_TIME_OFFSET)) / 10000000;
+}
+
+/**
+ * utc2ntfs - Convert Linux time to NTFS time
+ * @utc_time:  Linux time to convert to NTFS
+ *
+ * Convert the Linux time @utc_time to its corresponding NTFS time.
+ *
+ * Linux stores time in a long at present and measures it as the number of
+ * 1-second intervals since 1st January 1970, 00:00:00 UTC.
+ *
+ * NTFS uses Microsoft's standard time format which is stored in a s64 and is
+ * measured as the number of 100 nano-second intervals since 1st January 1601,
+ * 00:00:00 UTC.
+ *
+ * Return:  n  An NTFS time (100ns units since Jan 1601)
+ */
+static __inline__ s64 utc2ntfs(time_t utc_time)
+{
+	/* Convert to 100ns intervals and then add the NTFS time offset. */
+	return cpu_to_sle64((s64)utc_time * 10000000 + NTFS_TIME_OFFSET);
+}
+
+#endif /* _NTFS_NTFSTIME_H */

include/ntfs-3g/runlist.h

@@ -0,0 +1,87 @@
+/*
+ * runlist.h - Exports for runlist handling. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2002 Anton Altaparmakov
+ * Copyright (c) 2002 Richard Russon
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_RUNLIST_H
+#define _NTFS_RUNLIST_H
+
+#include "types.h"
+
+/* Forward declarations */
+typedef struct _runlist_element runlist_element;
+typedef runlist_element runlist;
+
+#include "attrib.h"
+#include "volume.h"
+
+/**
+ * struct _runlist_element - in memory vcn to lcn mapping array element.
+ * @vcn:	starting vcn of the current array element
+ * @lcn:	starting lcn of the current array element
+ * @length:	length in clusters of the current array element
+ *
+ * The last vcn (in fact the last vcn + 1) is reached when length == 0.
+ *
+ * When lcn == -1 this means that the count vcns starting at vcn are not
+ * physically allocated (i.e. this is a hole / data is sparse).
+ */
+struct _runlist_element {/* In memory vcn to lcn mapping structure element. */
+	VCN vcn;	/* vcn = Starting virtual cluster number. */
+	LCN lcn;	/* lcn = Starting logical cluster number. */
+	s64 length;	/* Run length in clusters. */
+};
+
+extern LCN ntfs_rl_vcn_to_lcn(const runlist_element *rl, const VCN vcn);
+
+extern s64 ntfs_rl_pread(const ntfs_volume *vol, const runlist_element *rl,
+		const s64 pos, s64 count, void *b);
+extern s64 ntfs_rl_pwrite(const ntfs_volume *vol, const runlist_element *rl,
+		const s64 pos, s64 count, void *b);
+
+extern runlist_element *ntfs_runlists_merge(runlist_element *drl,
+		runlist_element *srl);
+
+extern runlist_element *ntfs_mapping_pairs_decompress(const ntfs_volume *vol,
+		const ATTR_RECORD *attr, runlist_element *old_rl);
+
+extern int ntfs_get_nr_significant_bytes(const s64 n);
+
+extern int ntfs_get_size_for_mapping_pairs(const ntfs_volume *vol,
+		const runlist_element *rl, const VCN start_vcn);
+
+extern int ntfs_write_significant_bytes(u8 *dst, const u8 *dst_max,
+		const s64 n);
+
+extern int ntfs_mapping_pairs_build(const ntfs_volume *vol, u8 *dst,
+		const int dst_len, const runlist_element *rl,
+		const VCN start_vcn, VCN *const stop_vcn);
+
+extern int ntfs_rl_truncate(runlist **arl, const VCN start_vcn);
+
+extern int ntfs_rl_sparse(runlist *rl);
+extern s64 ntfs_rl_get_compressed_size(ntfs_volume *vol, runlist *rl);
+
+#ifdef NTFS_TEST
+int test_rl_main(int argc, char *argv[]);
+#endif
+
+#endif /* defined _NTFS_RUNLIST_H */
+

include/ntfs-3g/security.h

@@ -0,0 +1,58 @@
+/*
+ * security.h - Exports for handling security/ACLs in NTFS.  
+ *              Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2004      Anton Altaparmakov
+ * Copyright (c) 2005-2006 Szabolcs Szakacsits
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_SECURITY_H
+#define _NTFS_SECURITY_H
+
+#include "types.h"
+#include "layout.h"
+#include "inode.h"
+
+extern const GUID *const zero_guid;
+
+extern BOOL ntfs_guid_is_zero(const GUID *guid);
+extern char *ntfs_guid_to_mbs(const GUID *guid, char *guid_str);
+
+/**
+ * ntfs_sid_is_valid - determine if a SID is valid
+ * @sid:	SID for which to determine if it is valid
+ *
+ * Determine if the SID pointed to by @sid is valid.
+ *
+ * Return TRUE if it is valid and FALSE otherwise.
+ */
+static __inline__ BOOL ntfs_sid_is_valid(const SID *sid)
+{
+	if (!sid || sid->revision != SID_REVISION ||
+			sid->sub_authority_count > SID_MAX_SUB_AUTHORITIES)
+		return FALSE;
+	return TRUE;
+}
+
+extern int ntfs_sid_to_mbs_size(const SID *sid);
+extern char *ntfs_sid_to_mbs(const SID *sid, char *sid_str,
+		size_t sid_str_size);
+extern void ntfs_generate_guid(GUID *guid);
+extern int ntfs_sd_add_everyone(ntfs_inode *ni);
+
+#endif /* defined _NTFS_SECURITY_H */

include/ntfs-3g/support.h

@@ -0,0 +1,85 @@
+/*
+ * support.h - Useful definitions and macros. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2000-2004 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_SUPPORT_H
+#define _NTFS_SUPPORT_H
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_STDDEF_H
+#include <stddef.h>
+#endif
+
+/*
+ * Our mailing list. Use this define to prevent typos in email address.
+ */
+#define NTFS_DEV_LIST	"ntfs-3g-devel@lists.sf.net"
+
+/*
+ * Generic macro to convert pointers to values for comparison purposes.
+ */
+#ifndef p2n
+#define p2n(p)		((ptrdiff_t)((ptrdiff_t*)(p)))
+#endif
+
+/*
+ * The classic min and max macros.
+ */
+#ifndef min
+#define min(a,b)	((a) <= (b) ? (a) : (b))
+#endif
+
+#ifndef max
+#define max(a,b)	((a) >= (b) ? (a) : (b))
+#endif
+
+/*
+ * Useful macro for determining the offset of a struct member.
+ */
+#ifndef offsetof
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#endif
+
+/*
+ * Simple bit operation macros. NOTE: These are NOT atomic.
+ */
+#define test_bit(bit, var)	      ((var) & (1 << (bit)))
+#define set_bit(bit, var)	      (var) |= 1 << (bit)
+#define clear_bit(bit, var)	      (var) &= ~(1 << (bit))
+
+#define test_and_set_bit(bit, var)			\
+({							\
+	const BOOL old_state = test_bit(bit, var);	\
+	set_bit(bit, var);				\
+	old_state;					\
+})
+
+#define test_and_clear_bit(bit, var)			\
+({							\
+	const BOOL old_state = test_bit(bit, var);	\
+	clear_bit(bit, var);				\
+	old_state;					\
+})
+
+#endif /* defined _NTFS_SUPPORT_H */
+

include/ntfs-3g/types.h

@@ -0,0 +1,124 @@
+/*
+ * types.h - Misc type definitions not related to on-disk structure.  
+ *           Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2000-2004 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_TYPES_H
+#define _NTFS_TYPES_H
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#if HAVE_STDINT_H || !HAVE_CONFIG_H
+#include <stdint.h>
+#endif
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+typedef uint8_t  u8;			/* Unsigned types of an exact size */
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef uint64_t u64;
+
+typedef int8_t  s8;			/* Signed types of an exact size */
+typedef int16_t s16;
+typedef int32_t s32;
+typedef int64_t s64;
+
+typedef u16 le16;
+typedef u32 le32;
+typedef u64 le64;
+
+/*
+ * Declare sle{16,32,64} to be unsigned because we do not want sign extension
+ * on BE architectures.
+ */
+typedef u16 sle16;
+typedef u32 sle32;
+typedef u64 sle64;
+
+typedef u16 ntfschar;			/* 2-byte Unicode character type. */
+#define UCHAR_T_SIZE_BITS 1
+
+/*
+ * Clusters are signed 64-bit values on NTFS volumes.  We define two types, LCN
+ * and VCN, to allow for type checking and better code readability.
+ */
+typedef s64 VCN;
+typedef sle64 leVCN;
+typedef s64 LCN;
+typedef sle64 leLCN;
+
+/*
+ * The NTFS journal $LogFile uses log sequence numbers which are signed 64-bit
+ * values.  We define our own type LSN, to allow for type checking and better
+ * code readability.
+ */
+typedef s64 LSN;
+typedef sle64 leLSN;
+
+/*
+ * Cygwin has a collision between our BOOL and <windef.h>'s
+ * As long as this file will be included after <windows.h> were fine.
+ */
+#ifndef _WINDEF_H
+/**
+ * enum BOOL - These are just to make the code more readable...
+ */
+typedef enum {
+#ifndef FALSE
+	FALSE = 0,
+#endif
+#ifndef NO
+	NO = 0,
+#endif
+#ifndef ZERO
+	ZERO = 0,
+#endif
+#ifndef TRUE
+	TRUE = 1,
+#endif
+#ifndef YES
+	YES = 1,
+#endif
+#ifndef ONE
+	ONE = 1,
+#endif
+} BOOL;
+#endif /* defined _WINDEF_H */
+
+/**
+ * enum IGNORE_CASE_BOOL -
+ */
+typedef enum {
+	CASE_SENSITIVE = 0,
+	IGNORE_CASE = 1,
+} IGNORE_CASE_BOOL;
+
+#define STATUS_OK				(0)
+#define STATUS_ERROR				(-1)
+#define STATUS_RESIDENT_ATTRIBUTE_FILLED_MFT	(-2)
+#define STATUS_KEEP_SEARCHING			(-3)
+#define STATUS_NOT_FOUND			(-4)
+
+#endif /* defined _NTFS_TYPES_H */
+

include/ntfs-3g/unistr.h

@@ -0,0 +1,69 @@
+/*
+ * unistr.h - Exports for Unicode string handling. Originated from the Linux-NTFS
+ *	      project.
+ *
+ * Copyright (c) 2000-2004 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_UNISTR_H
+#define _NTFS_UNISTR_H
+
+#include "types.h"
+#include "layout.h"
+
+extern BOOL ntfs_names_are_equal(const ntfschar *s1, size_t s1_len,
+		const ntfschar *s2, size_t s2_len, const IGNORE_CASE_BOOL ic,
+		const ntfschar *upcase, const u32 upcase_size);
+
+extern int ntfs_names_collate(const ntfschar *name1, const u32 name1_len,
+		const ntfschar *name2, const u32 name2_len,
+		const int err_val, const IGNORE_CASE_BOOL ic,
+		const ntfschar *upcase, const u32 upcase_len);
+
+extern int ntfs_ucsncmp(const ntfschar *s1, const ntfschar *s2, size_t n);
+
+extern int ntfs_ucsncasecmp(const ntfschar *s1, const ntfschar *s2, size_t n,
+		const ntfschar *upcase, const u32 upcase_size);
+
+extern u32 ntfs_ucsnlen(const ntfschar *s, u32 maxlen);
+
+extern ntfschar *ntfs_ucsndup(const ntfschar *s, u32 maxlen);
+
+extern void ntfs_name_upcase(ntfschar *name, u32 name_len,
+		const ntfschar *upcase, const u32 upcase_len);
+
+extern void ntfs_file_value_upcase(FILE_NAME_ATTR *file_name_attr,
+		const ntfschar *upcase, const u32 upcase_len);
+
+extern int ntfs_file_values_compare(const FILE_NAME_ATTR *file_name_attr1,
+		const FILE_NAME_ATTR *file_name_attr2,
+		const int err_val, const IGNORE_CASE_BOOL ic,
+		const ntfschar *upcase, const u32 upcase_len);
+
+extern int ntfs_ucstombs(const ntfschar *ins, const int ins_len, char **outs,
+		int outs_len);
+extern int ntfs_mbstoucs(const char *ins, ntfschar **outs, int outs_len);
+
+extern void ntfs_upcase_table_build(ntfschar *uc, u32 uc_len);
+
+extern ntfschar *ntfs_str2ucs(const char *s, int *len);
+
+extern void ntfs_ucsfree(ntfschar *ucs);
+
+#endif /* defined _NTFS_UNISTR_H */
+

include/ntfs-3g/version.h

@@ -0,0 +1,29 @@
+/*
+ * version.h - Info about the NTFS library.  Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2005 Anton Altaparmakov
+ * Copyright (c) 2005 Richard Russon
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_VERSION_H_
+#define _NTFS_VERSION_H_
+
+extern const char *ntfs_libntfs_version(void);
+
+#endif /* _NTFS_VERSION_H_ */
+

include/ntfs-3g/volume.h

@@ -0,0 +1,233 @@
+/*
+ * volume.h - Exports for NTFS volume handling. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2000-2004 Anton Altaparmakov
+ * Copyright (c) 2004-2005 Richard Russon
+ * Copyright (c) 2005-2006 Yura Pakhuchiy
+ * Copyright (c) 2005-2006 Szabolcs Szakacsits
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_VOLUME_H
+#define _NTFS_VOLUME_H
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_STDIO_H
+#include <stdio.h>
+#endif
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+#ifdef HAVE_SYS_MOUNT_H
+#include <sys/mount.h>
+#endif
+#ifdef HAVE_MNTENT_H
+#include <mntent.h>
+#endif
+
+/*
+ * Under Cygwin, DJGPP and FreeBSD we do not have MS_RDONLY and MS_NOATIME,
+ * so we define them ourselves.
+ */
+#ifndef MS_RDONLY
+#define MS_RDONLY 1
+#endif
+/*
+ * Solaris defines MS_RDONLY but not MS_NOATIME thus we need to carefully
+ * define MS_NOATIME.
+ */
+#ifndef MS_NOATIME
+#if (MS_RDONLY != 1)
+#	define MS_NOATIME 1
+#else
+#	define MS_NOATIME 2
+#endif
+#endif
+
+/* Forward declaration */
+typedef struct _ntfs_volume ntfs_volume;
+
+#include "types.h"
+#include "support.h"
+#include "device.h"
+#include "inode.h"
+#include "attrib.h"
+
+/**
+ * enum ntfs_mount_flags -
+ *
+ * Flags returned by the ntfs_check_if_mounted() function.
+ */
+typedef enum {
+	NTFS_MF_MOUNTED		= 1,	/* Device is mounted. */
+	NTFS_MF_ISROOT		= 2,	/* Device is mounted as system root. */
+	NTFS_MF_READONLY	= 4,	/* Device is mounted read-only. */
+} ntfs_mount_flags;
+
+extern int ntfs_check_if_mounted(const char *file, unsigned long *mnt_flags);
+
+/**
+ * enum ntfs_volume_state_bits -
+ *
+ * Defined bits for the state field in the ntfs_volume structure.
+ */
+typedef enum {
+	NV_ReadOnly,		/* 1: Volume is read-only. */
+	NV_CaseSensitive,	/* 1: Volume is mounted case-sensitive. */
+	NV_LogFileEmpty,	/* 1: $logFile journal is empty. */
+	NV_NoATime,		/* 1: Do not update access time. */
+} ntfs_volume_state_bits;
+
+#define  test_nvol_flag(nv, flag)	 test_bit(NV_##flag, (nv)->state)
+#define   set_nvol_flag(nv, flag)	  set_bit(NV_##flag, (nv)->state)
+#define clear_nvol_flag(nv, flag)	clear_bit(NV_##flag, (nv)->state)
+
+#define NVolReadOnly(nv)		 test_nvol_flag(nv, ReadOnly)
+#define NVolSetReadOnly(nv)		  set_nvol_flag(nv, ReadOnly)
+#define NVolClearReadOnly(nv)		clear_nvol_flag(nv, ReadOnly)
+
+#define NVolCaseSensitive(nv)		 test_nvol_flag(nv, CaseSensitive)
+#define NVolSetCaseSensitive(nv)	  set_nvol_flag(nv, CaseSensitive)
+#define NVolClearCaseSensitive(nv)	clear_nvol_flag(nv, CaseSensitive)
+
+#define NVolLogFileEmpty(nv)		 test_nvol_flag(nv, LogFileEmpty)
+#define NVolSetLogFileEmpty(nv)		  set_nvol_flag(nv, LogFileEmpty)
+#define NVolClearLogFileEmpty(nv)	clear_nvol_flag(nv, LogFileEmpty)
+
+#define NVolNoATime(nv)			 test_nvol_flag(nv, NoATime)
+#define NVolSetNoATime(nv)		  set_nvol_flag(nv, NoATime)
+#define NVolClearNoATime(nv)		clear_nvol_flag(nv, NoATime)
+
+/*
+ * NTFS version 1.1 and 1.2 are used by Windows NT4.
+ * NTFS version 2.x is used by Windows 2000 Beta
+ * NTFS version 3.0 is used by Windows 2000.
+ * NTFS version 3.1 is used by Windows XP, 2003 and Vista.
+ */
+
+#define NTFS_V1_1(major, minor) ((major) == 1 && (minor) == 1)
+#define NTFS_V1_2(major, minor) ((major) == 1 && (minor) == 2)
+#define NTFS_V2_X(major, minor) ((major) == 2)
+#define NTFS_V3_0(major, minor) ((major) == 3 && (minor) == 0)
+#define NTFS_V3_1(major, minor) ((major) == 3 && (minor) == 1)
+
+#define NTFS_BUF_SIZE 8192
+
+/**
+ * struct _ntfs_volume - structure describing an open volume in memory.
+ */
+struct _ntfs_volume {
+	union {
+		struct ntfs_device *dev;	/* NTFS device associated with
+						   the volume. */
+		void *sb;	/* For kernel porting compatibility. */
+	};
+	char *vol_name;		/* Name of the volume. */
+	unsigned long state;	/* NTFS specific flags describing this volume.
+				   See ntfs_volume_state_bits above. */
+
+	ntfs_inode *vol_ni;	/* ntfs_inode structure for FILE_Volume. */
+	u8 major_ver;		/* Ntfs major version of volume. */
+	u8 minor_ver;		/* Ntfs minor version of volume. */
+	u16 flags;		/* Bit array of VOLUME_* flags. */
+
+	u16 sector_size;	/* Byte size of a sector. */
+	u8 sector_size_bits;	/* Log(2) of the byte size of a sector. */
+	u32 cluster_size;	/* Byte size of a cluster. */
+	u32 mft_record_size;	/* Byte size of a mft record. */
+	u32 indx_record_size;	/* Byte size of a INDX record. */
+	u8 cluster_size_bits;	/* Log(2) of the byte size of a cluster. */
+	u8 mft_record_size_bits;/* Log(2) of the byte size of a mft record. */
+	u8 indx_record_size_bits;/* Log(2) of the byte size of a INDX record. */
+
+	/* Variables used by the cluster and mft allocators. */
+	u8 mft_zone_multiplier;	/* Initial mft zone multiplier. */
+	s64 mft_data_pos;	/* Mft record number at which to allocate the
+				   next mft record. */
+	LCN mft_zone_start;	/* First cluster of the mft zone. */
+	LCN mft_zone_end;	/* First cluster beyond the mft zone. */
+	LCN mft_zone_pos;	/* Current position in the mft zone. */
+	LCN data1_zone_pos;	/* Current position in the first data zone. */
+	LCN data2_zone_pos;	/* Current position in the second data zone. */
+
+	s64 nr_clusters;	/* Volume size in clusters, hence also the
+				   number of bits in lcn_bitmap. */
+	ntfs_inode *lcnbmp_ni;	/* ntfs_inode structure for FILE_Bitmap. */
+	ntfs_attr *lcnbmp_na;	/* ntfs_attr structure for the data attribute
+				   of FILE_Bitmap. Each bit represents a
+				   cluster on the volume, bit 0 representing
+				   lcn 0 and so on. A set bit means that the
+				   cluster and vice versa. */
+
+	LCN mft_lcn;		/* Logical cluster number of the data attribute
+				   for FILE_MFT. */
+	ntfs_inode *mft_ni;	/* ntfs_inode structure for FILE_MFT. */
+	ntfs_attr *mft_na;	/* ntfs_attr structure for the data attribute
+				   of FILE_MFT. */
+	ntfs_attr *mftbmp_na;	/* ntfs_attr structure for the bitmap attribute
+				   of FILE_MFT. Each bit represents an mft
+				   record in the $DATA attribute, bit 0
+				   representing mft record 0 and so on. A set
+				   bit means that the mft record is in use and
+				   vice versa. */
+
+	int mftmirr_size;	/* Size of the FILE_MFTMirr in mft records. */
+	LCN mftmirr_lcn;	/* Logical cluster number of the data attribute
+				   for FILE_MFTMirr. */
+	ntfs_inode *mftmirr_ni;	/* ntfs_inode structure for FILE_MFTMirr. */
+	ntfs_attr *mftmirr_na;	/* ntfs_attr structure for the data attribute
+				   of FILE_MFTMirr. */
+
+	ntfschar *upcase;	/* Upper case equivalents of all 65536 2-byte
+				   Unicode characters. Obtained from
+				   FILE_UpCase. */
+	u32 upcase_len;		/* Length in Unicode characters of the upcase
+				   table. */
+
+	ATTR_DEF *attrdef;	/* Attribute definitions. Obtained from
+				   FILE_AttrDef. */
+	s32 attrdef_len;	/* Size of the attribute definition table in
+				   bytes. */
+
+	/* Temp: for directory handling */
+	void *private_data;	/* ntfs_dir for . */
+	void *private_bmp1;	/* ntfs_bmp for $MFT/$BITMAP */
+	void *private_bmp2;	/* ntfs_bmp for $Bitmap */
+};
+
+extern ntfs_volume *ntfs_volume_alloc(void);
+
+extern ntfs_volume *ntfs_volume_startup(struct ntfs_device *dev,
+		unsigned long flags);
+
+extern ntfs_volume *ntfs_device_mount(struct ntfs_device *dev,
+		unsigned long flags);
+extern int ntfs_device_umount(ntfs_volume *vol, const BOOL force);
+
+extern ntfs_volume *ntfs_mount(const char *name, unsigned long flags);
+extern int ntfs_umount(ntfs_volume *vol, const BOOL force);
+
+extern int ntfs_version_is_supported(ntfs_volume *vol);
+extern int ntfs_logfile_reset(ntfs_volume *vol);
+
+extern int ntfs_volume_write_flags(ntfs_volume *vol, const u16 flags);
+
+#endif /* defined _NTFS_VOLUME_H */
+

libntfs-3g/Makefile.am

@@ -0,0 +1,64 @@
+#
+# Before making a release, the LTVERSION string should be modified.
+# The string is of the form CURRENT:REVISION:AGE.
+#
+# CURRENT (C)
+#	The most recent interface number that this library implements.
+#
+# REVISION (R)
+#	The implementation number that this library implements.
+#
+# AGE (A)
+#	The difference between the newest and oldest interfaces that this
+#	library implements. In other works, the library implements all the
+#	interface numbers in the range from number 'CURRENT - AGE' to
+#	'CURRENT'.
+#
+# This means that:
+#
+#   - If interfaces have been changed or added, but binary compatibility has
+#     been preserved, change to C+1:0:A+1
+#
+#   - If binary compatibility has been broken (eg removed or changed
+#     interfaces) change to C+1:0:0
+#
+#   - If the interface is the same as the previous version, change to C:R+1:A
+#
+
+linux_ntfsincludedir = -I$(top_srcdir)/include/ntfs-3g
+
+lib_LTLIBRARIES = libntfs-3g.la
+libntfs_3g_la_CFLAGS = $(LIBNTFS_3G_CFLAGS) 
+libntfs_3g_la_SOURCES =	\
+	attrib.c	\
+	attrlist.c	\
+	bitmap.c	\
+	bootsect.c	\
+	collate.c	\
+	compat.c	\
+	compress.c	\
+	debug.c		\
+	device.c	\
+	device_io.c	\
+	dir.c		\
+	index.c		\
+	inode.c		\
+	lcnalloc.c	\
+	logfile.c	\
+	logging.c	\
+	mft.c		\
+	misc.c		\
+	mst.c		\
+	runlist.c	\
+	security.c	\
+	unistr.c	\
+	version.c	\
+	volume.c
+
+AM_CPPFLAGS = $(linux_ntfsincludedir) $(all_includes)
+
+EXTRA_DIST = unix_io.c
+
+MAINTAINERCLEANFILES = Makefile.in
+
+libs:	$(lib_LTLIBRARIES)

libntfs-3g/attrlist.c

@@ -0,0 +1,315 @@
+/**
+ * attrlist.c - Attribute list attribute handling code.  Originated from the Linux-NTFS
+ *		project.
+ *
+ * Copyright (c) 2004-2005 Anton Altaparmakov
+ * Copyright (c) 2004-2005 Yura Pakhuchiy
+ * Copyright (c)      2006 Szabolcs Szakacsits
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#include "types.h"
+#include "layout.h"
+#include "attrib.h"
+#include "attrlist.h"
+#include "debug.h"
+#include "unistr.h"
+#include "logging.h"
+#include "misc.h"
+
+/**
+ * ntfs_attrlist_need - check whether inode need attribute list
+ * @ni:		opened ntfs inode for which perform check
+ *
+ * Check whether all are attributes belong to one MFT record, in that case
+ * attribute list is not needed.
+ *
+ * Return 1 if inode need attribute list, 0 if not, -1 on error with errno set
+ * to the error code. If function succeed errno set to 0. The following error
+ * codes are defined:
+ *	EINVAL	- Invalid arguments passed to function or attribute haven't got
+ *		  attribute list.
+ */
+int ntfs_attrlist_need(ntfs_inode *ni)
+{
+	ATTR_LIST_ENTRY *ale;
+
+	if (!ni) {
+		ntfs_log_trace("Invalid arguments.\n");
+		errno = EINVAL;
+		return -1;
+	}
+
+	ntfs_log_trace("Entering for inode 0x%llx.\n", (long long) ni->mft_no);
+
+	if (!NInoAttrList(ni)) {
+		ntfs_log_trace("Inode haven't got attribute list.\n");
+		errno = EINVAL;
+		return -1;
+	}
+
+	if (!ni->attr_list) {
+		ntfs_log_trace("Corrupt in-memory struct.\n");
+		errno = EINVAL;
+		return -1;
+	}
+
+	errno = 0;
+	ale = (ATTR_LIST_ENTRY *)ni->attr_list;
+	while ((u8*)ale < ni->attr_list + ni->attr_list_size) {
+		if (MREF_LE(ale->mft_reference) != ni->mft_no)
+			return 1;
+		ale = (ATTR_LIST_ENTRY *)((u8*)ale + le16_to_cpu(ale->length));
+	}
+	return 0;
+}
+
+/**
+ * ntfs_attrlist_entry_add - add an attribute list attribute entry
+ * @ni:		opened ntfs inode, which contains that attribute
+ * @attr:	attribute record to add to attribute list
+ *
+ * Return 0 on success and -1 on error with errno set to the error code. The
+ * following error codes are defined:
+ *	EINVAL	- Invalid arguments passed to function.
+ *	ENOMEM	- Not enough memory to allocate necessary buffers.
+ *	EIO	- I/O error occurred or damaged filesystem.
+ *	EEXIST	- Such attribute already present in attribute list.
+ */
+int ntfs_attrlist_entry_add(ntfs_inode *ni, ATTR_RECORD *attr)
+{
+	ATTR_LIST_ENTRY *ale;
+	MFT_REF mref;
+	ntfs_attr *na = NULL;
+	ntfs_attr_search_ctx *ctx;
+	u8 *new_al;
+	int entry_len, entry_offset, err;
+
+	ntfs_log_trace("Entering for inode 0x%llx, attr 0x%x.\n",
+			(long long) ni->mft_no,
+			(unsigned) le32_to_cpu(attr->type));
+
+	if (!ni || !attr) {
+		ntfs_log_trace("Invalid arguments.\n");
+		errno = EINVAL;
+		return -1;
+	}
+
+	mref = MK_LE_MREF(ni->mft_no, le16_to_cpu(ni->mrec->sequence_number));
+
+	if (ni->nr_extents == -1)
+		ni = ni->base_ni;
+
+	if (!NInoAttrList(ni)) {
+		ntfs_log_trace("Attribute list isn't present.\n");
+		errno = ENOENT;
+		return -1;
+	}
+
+	/* Determine size and allocate memory for new attribute list. */
+	entry_len = (sizeof(ATTR_LIST_ENTRY) + sizeof(ntfschar) *
+			attr->name_length + 7) & ~7;
+	new_al = ntfs_calloc(ni->attr_list_size + entry_len);
+	if (!new_al)
+		return -1;
+
+	/* Find place for the new entry. */
+	ctx = ntfs_attr_get_search_ctx(ni, NULL);
+	if (!ctx) {
+		err = errno;
+		ntfs_log_trace("Failed to obtain attribute search context.\n");
+		goto err_out;
+	}
+	if (!ntfs_attr_lookup(attr->type, (attr->name_length) ? (ntfschar*)
+			((u8*)attr + le16_to_cpu(attr->name_offset)) :
+			AT_UNNAMED, attr->name_length, CASE_SENSITIVE,
+			(attr->non_resident) ? le64_to_cpu(attr->lowest_vcn) :
+			0, (attr->non_resident) ? NULL : ((u8*)attr +
+			le16_to_cpu(attr->value_offset)), (attr->non_resident) ?
+			0 : le32_to_cpu(attr->value_length), ctx)) {
+		/* Found some extent, check it to be before new extent. */
+		if (ctx->al_entry->lowest_vcn == attr->lowest_vcn) {
+			err = EEXIST;
+			ntfs_log_trace("Such attribute already present in the "
+					"attribute list.\n");
+			ntfs_attr_put_search_ctx(ctx);
+			goto err_out;
+		}
+		/* Add new entry after this extent. */
+		ale = (ATTR_LIST_ENTRY*)((u8*)ctx->al_entry +
+				le16_to_cpu(ctx->al_entry->length));
+	} else {
+		/* Check for real errors. */
+		if (errno != ENOENT) {
+			err = errno;
+			ntfs_log_trace("Attribute lookup failed.\n");
+			ntfs_attr_put_search_ctx(ctx);
+			goto err_out;
+		}
+		/* No previous extents found. */
+		ale = ctx->al_entry;
+	}
+	/* Don't need it anymore, @ctx->al_entry points to @ni->attr_list. */
+	ntfs_attr_put_search_ctx(ctx);
+
+	/* Determine new entry offset. */
+	entry_offset = ((u8 *)ale - ni->attr_list);
+	/* Set pointer to new entry. */
+	ale = (ATTR_LIST_ENTRY *)(new_al + entry_offset);
+	/* Zero it to fix valgrind warning. */
+	memset(ale, 0, entry_len);
+	/* Form new entry. */
+	ale->type = attr->type;
+	ale->length = cpu_to_le16(entry_len);
+	ale->name_length = attr->name_length;
+	ale->name_offset = offsetof(ATTR_LIST_ENTRY, name);
+	if (attr->non_resident)
+		ale->lowest_vcn = attr->lowest_vcn;
+	else
+		ale->lowest_vcn = 0;
+	ale->mft_reference = mref;
+	ale->instance = attr->instance;
+	memcpy(ale->name, (u8 *)attr + le16_to_cpu(attr->name_offset),
+			attr->name_length * sizeof(ntfschar));
+
+	/* Resize $ATTRIBUTE_LIST to new length. */
+	na = ntfs_attr_open(ni, AT_ATTRIBUTE_LIST, AT_UNNAMED, 0);
+	if (!na) {
+		err = errno;
+		ntfs_log_trace("Failed to open $ATTRIBUTE_LIST attribute.\n");
+		goto err_out;
+	}
+	if (ntfs_attr_truncate(na, ni->attr_list_size + entry_len)) {
+		err = errno;
+		ntfs_log_trace("$ATTRIBUTE_LIST resize failed.\n");
+		goto err_out;
+	}
+
+	/* Copy entries from old attribute list to new. */
+	memcpy(new_al, ni->attr_list, entry_offset);
+	memcpy(new_al + entry_offset + entry_len, ni->attr_list +
+			entry_offset, ni->attr_list_size - entry_offset);
+
+	/* Set new runlist. */
+	free(ni->attr_list);
+	ni->attr_list = new_al;
+	ni->attr_list_size = ni->attr_list_size + entry_len;
+	NInoAttrListSetDirty(ni);
+	/* Done! */
+	ntfs_attr_close(na);
+	return 0;
+err_out:
+	if (na)
+		ntfs_attr_close(na);
+	free(new_al);
+	errno = err;
+	return -1;
+}
+
+/**
+ * ntfs_attrlist_entry_rm - remove an attribute list attribute entry
+ * @ctx:	attribute search context describing the attribute list entry
+ *
+ * Remove the attribute list entry @ctx->al_entry from the attribute list.
+ *
+ * Return 0 on success and -1 on error with errno set to the error code.
+ */
+int ntfs_attrlist_entry_rm(ntfs_attr_search_ctx *ctx)
+{
+	u8 *new_al;
+	int new_al_len;
+	ntfs_inode *base_ni;
+	ntfs_attr *na;
+	ATTR_LIST_ENTRY *ale;
+	int err;
+
+	if (!ctx || !ctx->ntfs_ino || !ctx->al_entry) {
+		ntfs_log_trace("Invalid arguments.\n");
+		errno = EINVAL;
+		return -1;
+	}
+
+	if (ctx->base_ntfs_ino)
+		base_ni = ctx->base_ntfs_ino;
+	else
+		base_ni = ctx->ntfs_ino;
+	ale = ctx->al_entry;
+
+	ntfs_log_trace("Entering for inode 0x%llx, attr 0x%x, lowest_vcn %lld.\n",
+			(long long) ctx->ntfs_ino->mft_no,
+			(unsigned) le32_to_cpu(ctx->al_entry->type),
+			(long long) le64_to_cpu(ctx->al_entry->lowest_vcn));
+
+	if (!NInoAttrList(base_ni)) {
+		ntfs_log_trace("Attribute list isn't present.\n");
+		errno = ENOENT;
+		return -1;
+	}
+
+	/* Allocate memory for new attribute list. */
+	new_al_len = base_ni->attr_list_size - le16_to_cpu(ale->length);
+	new_al = ntfs_calloc(new_al_len);
+	if (!new_al)
+		return -1;
+
+	/* Reisze $ATTRIBUTE_LIST to new length. */
+	na = ntfs_attr_open(base_ni, AT_ATTRIBUTE_LIST, AT_UNNAMED, 0);
+	if (!na) {
+		err = errno;
+		ntfs_log_trace("Failed to open $ATTRIBUTE_LIST attribute.\n");
+		goto err_out;
+	}
+	if (ntfs_attr_truncate(na, new_al_len)) {
+		err = errno;
+		ntfs_log_trace("$ATTRIBUTE_LIST resize failed.\n");
+		goto err_out;
+	}
+
+	/* Copy entries from old attribute list to new. */
+	memcpy(new_al, base_ni->attr_list, (u8*)ale - base_ni->attr_list);
+	memcpy(new_al + ((u8*)ale - base_ni->attr_list), (u8*)ale + le16_to_cpu(
+		ale->length), new_al_len - ((u8*)ale - base_ni->attr_list));
+
+	/* Set new runlist. */
+	free(base_ni->attr_list);
+	base_ni->attr_list = new_al;
+	base_ni->attr_list_size = new_al_len;
+	NInoAttrListSetDirty(base_ni);
+	/* Done! */
+	ntfs_attr_close(na);
+	return 0;
+err_out:
+	if (na)
+		ntfs_attr_close(na);
+	free(new_al);
+	errno = err;
+	return -1;
+}

libntfs-3g/bitmap.c

@@ -0,0 +1,289 @@
+/**
+ * bitmap.c - Bitmap handling code. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2002-2006 Anton Altaparmakov
+ * Copyright (c) 2004-2005 Richard Russon
+ * Copyright (c) 2004-2006 Szabolcs Szakacsits
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STDIO_H
+#include <stdio.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#include "types.h"
+#include "attrib.h"
+#include "bitmap.h"
+#include "debug.h"
+#include "logging.h"
+#include "misc.h"
+
+/**
+ * ntfs_bit_set - set a bit in a field of bits
+ * @bitmap:	field of bits
+ * @bit:	bit to set
+ * @new_value:	value to set bit to (0 or 1)
+ *
+ * Set the bit @bit in the @bitmap to @new_value. Ignore all errors.
+ */
+void ntfs_bit_set(u8 *bitmap, const u64 bit, const u8 new_value)
+{
+	if (!bitmap || new_value > 1)
+		return;
+	if (!new_value)
+		bitmap[bit >> 3] &= ~(1 << (bit & 7));
+	else
+		bitmap[bit >> 3] |= (1 << (bit & 7));
+}
+
+/**
+ * ntfs_bit_get - get value of a bit in a field of bits
+ * @bitmap:	field of bits
+ * @bit:	bit to get
+ *
+ * Get and return the value of the bit @bit in @bitmap (0 or 1).
+ * Return -1 on error.
+ */
+char ntfs_bit_get(const u8 *bitmap, const u64 bit)
+{
+	if (!bitmap)
+		return -1;
+	return (bitmap[bit >> 3] >> (bit & 7)) & 1;
+}
+
+/**
+ * ntfs_bit_get_and_set - get value of a bit in a field of bits and set it
+ * @bitmap:	field of bits
+ * @bit:	bit to get/set
+ * @new_value:	value to set bit to (0 or 1)
+ *
+ * Return the value of the bit @bit and set it to @new_value (0 or 1).
+ * Return -1 on error.
+ */
+char ntfs_bit_get_and_set(u8 *bitmap, const u64 bit, const u8 new_value)
+{
+	register u8 old_bit, shift;
+
+	if (!bitmap || new_value > 1)
+		return -1;
+	shift = bit & 7;
+	old_bit = (bitmap[bit >> 3] >> shift) & 1;
+	if (new_value != old_bit)
+		bitmap[bit >> 3] ^= 1 << shift;
+	return old_bit;
+}
+
+/**
+ * ntfs_bitmap_set_bits_in_run - set a run of bits in a bitmap to a value
+ * @na:		attribute containing the bitmap
+ * @start_bit:	first bit to set
+ * @count:	number of bits to set
+ * @value:	value to set the bits to (i.e. 0 or 1)
+ *
+ * Set @count bits starting at bit @start_bit in the bitmap described by the
+ * attribute @na to @value, where @value is either 0 or 1.
+ *
+ * On success return 0 and on error return -1 with errno set to the error code.
+ */
+static int ntfs_bitmap_set_bits_in_run(ntfs_attr *na, s64 start_bit,
+				       s64 count, int value)
+{
+	s64 bufsize, br;
+	u8 *buf, *lastbyte_buf;
+	int bit, firstbyte, lastbyte, lastbyte_pos, tmp, err;
+
+	if (!na || start_bit < 0 || count < 0) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	bit = start_bit & 7;
+	if (bit)
+		firstbyte = 1;
+	else
+		firstbyte = 0;
+
+	/* Calculate the required buffer size in bytes, capping it at 8kiB. */
+	bufsize = ((count - (bit ? 8 - bit : 0) + 7) >> 3) + firstbyte;
+	if (bufsize > 8192)
+		bufsize = 8192;
+
+	buf = ntfs_malloc(bufsize);
+	if (!buf)
+		return -1;
+	
+	/* Depending on @value, zero or set all bits in the allocated buffer. */
+	memset(buf, value ? 0xff : 0, bufsize);
+
+	/* If there is a first partial byte... */
+	if (bit) {
+		/* read it in... */
+		br = ntfs_attr_pread(na, start_bit >> 3, 1, buf);
+		if (br != 1) {
+			free(buf);
+			errno = EIO;
+			return -1;
+		}
+		/* and set or clear the appropriate bits in it. */
+		while ((bit & 7) && count--) {
+			if (value)
+				*buf |= 1 << bit++;
+			else
+				*buf &= ~(1 << bit++);
+		}
+		/* Update @start_bit to the new position. */
+		start_bit = (start_bit + 7) & ~7;
+	}
+
+	/* Loop until @count reaches zero. */
+	lastbyte = 0;
+	lastbyte_buf = NULL;
+	bit = count & 7;
+	do {
+		/* If there is a last partial byte... */
+		if (count > 0 && bit) {
+			lastbyte_pos = ((count + 7) >> 3) + firstbyte;
+			if (!lastbyte_pos) {
+				// FIXME: Eeek! BUG!
+				ntfs_log_trace("Eeek! lastbyte is zero. Leaving "
+						"inconsistent metadata.\n");
+				err = EIO;
+				goto free_err_out;
+			}
+			/* and it is in the currently loaded bitmap window... */
+			if (lastbyte_pos <= bufsize) {
+				lastbyte_buf = buf + lastbyte_pos - 1;
+
+				/* read the byte in... */
+				br = ntfs_attr_pread(na, (start_bit + count) >>
+						3, 1, lastbyte_buf);
+				if (br != 1) {
+					// FIXME: Eeek! We need rollback! (AIA)
+					ntfs_log_trace("Eeek! Read of last byte "
+							"failed. Leaving "
+							"inconsistent metadata.\n");
+					err = EIO;
+					goto free_err_out;
+				}
+				/* and set/clear the appropriate bits in it. */
+				while (bit && count--) {
+					if (value)
+						*lastbyte_buf |= 1 << --bit;
+					else
+						*lastbyte_buf &= ~(1 << --bit);
+				}
+				/* We don't want to come back here... */
+				bit = 0;
+				/* We have a last byte that we have handled. */
+				lastbyte = 1;
+			}
+		}
+
+		/* Write the prepared buffer to disk. */
+		tmp = (start_bit >> 3) - firstbyte;
+		br = ntfs_attr_pwrite(na, tmp, bufsize, buf);
+		if (br != bufsize) {
+			// FIXME: Eeek! We need rollback! (AIA)
+			ntfs_log_trace("Eeek! Failed to write buffer to bitmap. "
+					"Leaving inconsistent metadata.\n");
+			err = EIO;
+			goto free_err_out;
+		}
+
+		/* Update counters. */
+		tmp = (bufsize - firstbyte - lastbyte) << 3;
+		if (firstbyte) {
+			firstbyte = 0;
+			/*
+			 * Re-set the partial first byte so a subsequent write
+			 * of the buffer does not have stale, incorrect bits.
+			 */
+			*buf = value ? 0xff : 0;
+		}
+		start_bit += tmp;
+		count -= tmp;
+		if (bufsize > (tmp = (count + 7) >> 3))
+			bufsize = tmp;
+
+		if (lastbyte && count != 0) {
+			// FIXME: Eeek! BUG!
+			ntfs_log_trace("Eeek! Last buffer but count is not zero (= "
+					"%lli). Leaving inconsistent metadata.\n",
+					(long long)count);
+			err = EIO;
+			goto free_err_out;
+		}
+	} while (count > 0);
+
+	/* Done! */
+	free(buf);
+	return 0;
+
+free_err_out:
+	free(buf);
+	errno = err;
+	return -1;
+}
+
+/**
+ * ntfs_bitmap_set_run - set a run of bits in a bitmap
+ * @na:		attribute containing the bitmap
+ * @start_bit:	first bit to set
+ * @count:	number of bits to set
+ *
+ * Set @count bits starting at bit @start_bit in the bitmap described by the
+ * attribute @na.
+ *
+ * On success return 0 and on error return -1 with errno set to the error code.
+ */
+int ntfs_bitmap_set_run(ntfs_attr *na, s64 start_bit, s64 count)
+{
+	return ntfs_bitmap_set_bits_in_run(na, start_bit, count, 1);
+}
+
+/**
+ * ntfs_bitmap_clear_run - clear a run of bits in a bitmap
+ * @na:		attribute containing the bitmap
+ * @start_bit:	first bit to clear
+ * @count:	number of bits to clear
+ *
+ * Clear @count bits starting at bit @start_bit in the bitmap described by the
+ * attribute @na.
+ *
+ * On success return 0 and on error return -1 with errno set to the error code.
+ */
+int ntfs_bitmap_clear_run(ntfs_attr *na, s64 start_bit, s64 count)
+{
+	ntfs_log_trace("Dealloc from bit 0x%llx, count 0x%llx.\n",
+		       (long long)start_bit, (long long)count);
+
+	return ntfs_bitmap_set_bits_in_run(na, start_bit, count, 0);
+}
+

libntfs-3g/bootsect.c

@@ -0,0 +1,273 @@
+/**
+ * bootsect.c - Boot sector handling code. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2000-2006 Anton Altaparmakov
+ * Copyright (c) 2003-2004 Szabolcs Szakacsits
+ * Copyright (c)      2005 Yura Pakhuchiy
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_STDIO_H
+#include <stdio.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#include "compat.h"
+#include "bootsect.h"
+#include "debug.h"
+#include "logging.h"
+
+/**
+ * ntfs_boot_sector_is_ntfs - check if buffer contains a valid ntfs boot sector
+ * @b:		buffer containing putative boot sector to analyze
+ * @silent:	if zero, output progress messages to stderr
+ *
+ * Check if the buffer @b contains a valid ntfs boot sector. The buffer @b
+ * must be at least 512 bytes in size.
+ *
+ * If @silent is zero, output progress messages to stderr. Otherwise, do not
+ * output any messages (except when configured with --enable-debug in which
+ * case warning/debug messages may be displayed).
+ *
+ * Return TRUE if @b contains a valid ntfs boot sector and FALSE if not.
+ */
+BOOL ntfs_boot_sector_is_ntfs(NTFS_BOOT_SECTOR *b, const BOOL silent __attribute__((unused)))
+{
+	u32 i;
+
+	ntfs_log_debug("\nBeginning bootsector check...\n");
+
+	/* Calculate the checksum. Note, this is just a simple addition of
+	   all u32 values in the bootsector starting at the beginning and
+	   finishing at the offset of the checksum itself (i.e. not including
+	   the checksum...). */
+	if ((void*)b < (void*)&b->checksum) {
+		u32 *u = (u32 *)b;
+		u32 *bi = (u32 *)(&b->checksum);
+
+		ntfs_log_debug("Calculating bootsector checksum... ");
+
+		for (i = 0; u < bi; ++u)
+			i += le32_to_cpup(u);
+
+		if (le32_to_cpu(b->checksum) && le32_to_cpu(b->checksum) != i)
+			goto not_ntfs;
+		ntfs_log_debug("OK\n");
+	}
+
+	/* Check OEMidentifier is "NTFS    " */
+	ntfs_log_debug("Checking OEMid... ");
+	if (b->oem_id != cpu_to_le64(0x202020205346544eULL)) /* "NTFS    " */
+		goto not_ntfs;
+	ntfs_log_debug("OK\n");
+
+	/* Check bytes per sector value is between 256 and 4096. */
+	ntfs_log_debug("Checking bytes per sector... ");
+	if (le16_to_cpu(b->bpb.bytes_per_sector) <  0x100 ||
+	    le16_to_cpu(b->bpb.bytes_per_sector) > 0x1000)
+		goto not_ntfs;
+	ntfs_log_debug("OK\n");
+
+	/* Check sectors per cluster value is valid. */
+	ntfs_log_debug("Checking sectors per cluster... ");
+	switch (b->bpb.sectors_per_cluster) {
+	case 1: case 2: case 4: case 8: case 16: case 32: case 64: case 128:
+		break;
+	default:
+		goto not_ntfs;
+	}
+	ntfs_log_debug("OK\n");
+
+	/* Check the cluster size is not above 65536 bytes. */
+	ntfs_log_debug("Checking cluster size... ");
+	if ((u32)le16_to_cpu(b->bpb.bytes_per_sector) *
+	    b->bpb.sectors_per_cluster > 0x10000)
+		goto not_ntfs;
+	ntfs_log_debug("OK\n");
+
+	/* Check reserved/unused fields are really zero. */
+	ntfs_log_debug("Checking reserved fields are zero... ");
+	if (le16_to_cpu(b->bpb.reserved_sectors) ||
+	    le16_to_cpu(b->bpb.root_entries) ||
+	    le16_to_cpu(b->bpb.sectors) ||
+	    le16_to_cpu(b->bpb.sectors_per_fat) ||
+	    le32_to_cpu(b->bpb.large_sectors) ||
+	    b->bpb.fats)
+		goto not_ntfs;
+	ntfs_log_debug("OK\n");
+
+	/* Check clusters per file mft record value is valid. */
+	ntfs_log_debug("Checking clusters per mft record... ");
+	if ((u8)b->clusters_per_mft_record < 0xe1 ||
+	    (u8)b->clusters_per_mft_record > 0xf7) {
+		switch (b->clusters_per_mft_record) {
+		case 1: case 2: case 4: case 8: case 0x10: case 0x20: case 0x40:
+			break;
+		default:
+			goto not_ntfs;
+		}
+	}
+	ntfs_log_debug("OK\n");
+
+	/* Check clusters per index block value is valid. */
+	ntfs_log_debug("Checking clusters per index block... ");
+	if ((u8)b->clusters_per_index_record < 0xe1 ||
+	    (u8)b->clusters_per_index_record > 0xf7) {
+		switch (b->clusters_per_index_record) {
+		case 1: case 2: case 4: case 8: case 0x10: case 0x20: case 0x40:
+			break;
+		default:
+			goto not_ntfs;
+		}
+	}
+	ntfs_log_debug("OK\n");
+
+	if (b->end_of_sector_marker != cpu_to_le16(0xaa55))
+		ntfs_log_debug("Warning: Bootsector has invalid end of sector marker.\n");
+
+	ntfs_log_debug("Bootsector check completed successfully.\n");
+
+	return TRUE;
+not_ntfs:
+	ntfs_log_debug("FAILED\n");
+	ntfs_log_debug("Bootsector check failed.  Aborting...\n");
+	return FALSE;
+}
+
+/**
+ * ntfs_boot_sector_parse - setup an ntfs volume from an ntfs boot sector
+ * @vol:	ntfs_volume to setup
+ * @bs:		buffer containing ntfs boot sector to parse
+ *
+ * Parse the ntfs bootsector @bs and setup the ntfs volume @vol with the
+ * obtained values.
+ *
+ * Return 0 on success or -1 on error with errno set to the error code EINVAL.
+ */
+int ntfs_boot_sector_parse(ntfs_volume *vol, const NTFS_BOOT_SECTOR *bs)
+{
+	u8 sectors_per_cluster;
+	s8 c;
+
+	/* We return -1 with errno = EINVAL on error. */
+	errno = EINVAL;
+
+	vol->sector_size = le16_to_cpu(bs->bpb.bytes_per_sector);
+	vol->sector_size_bits = ffs(vol->sector_size) - 1;
+	ntfs_log_debug("SectorSize = 0x%x\n", vol->sector_size);
+	ntfs_log_debug("SectorSizeBits = %u\n", vol->sector_size_bits);
+	/*
+	 * The bounds checks on mft_lcn and mft_mirr_lcn (i.e. them being
+	 * below or equal the number_of_clusters) really belong in the
+	 * ntfs_boot_sector_is_ntfs but in this way we can just do this once.
+	 */
+	sectors_per_cluster = bs->bpb.sectors_per_cluster;
+	ntfs_log_debug("NumberOfSectors = %lli\n", sle64_to_cpu(bs->number_of_sectors));
+	ntfs_log_debug("SectorsPerCluster = 0x%x\n", sectors_per_cluster);
+	if (sectors_per_cluster & (sectors_per_cluster - 1)) {
+		ntfs_log_debug("Error: %s is not a valid NTFS partition! "
+				"sectors_per_cluster is not a power of 2.\n",
+				vol->dev->d_name);
+		return -1;
+	}
+	vol->nr_clusters = sle64_to_cpu(bs->number_of_sectors) >>
+			(ffs(sectors_per_cluster) - 1);
+
+	vol->mft_lcn = sle64_to_cpu(bs->mft_lcn);
+	vol->mftmirr_lcn = sle64_to_cpu(bs->mftmirr_lcn);
+	ntfs_log_debug("MFT LCN = 0x%llx\n", vol->mft_lcn);
+	ntfs_log_debug("MFTMirr LCN = 0x%llx\n", vol->mftmirr_lcn);
+	if (vol->mft_lcn > vol->nr_clusters ||
+			vol->mftmirr_lcn > vol->nr_clusters) {
+		ntfs_log_debug("Error: %s is not a valid NTFS partition!\n",
+				vol->dev->d_name);
+		ntfs_log_debug("($Mft LCN or $MftMirr LCN is greater than the "
+				"number of clusters!)\n");
+		return -1;
+	}
+	vol->cluster_size = sectors_per_cluster * vol->sector_size;
+	if (vol->cluster_size & (vol->cluster_size - 1)) {
+		ntfs_log_debug("Error: %s is not a valid NTFS partition! "
+				"cluster_size is not a power of 2.\n",
+				vol->dev->d_name);
+		return -1;
+	}
+	vol->cluster_size_bits = ffs(vol->cluster_size) - 1;
+	/*
+	 * Need to get the clusters per mft record and handle it if it is
+	 * negative. Then calculate the mft_record_size. A value of 0x80 is
+	 * illegal, thus signed char is actually ok!
+	 */
+	c = bs->clusters_per_mft_record;
+	ntfs_log_debug("ClusterSize = 0x%x\n", (unsigned)vol->cluster_size);
+	ntfs_log_debug("ClusterSizeBits = %u\n", vol->cluster_size_bits);
+	ntfs_log_debug("ClustersPerMftRecord = 0x%x\n", c);
+	/*
+	 * When clusters_per_mft_record is negative, it means that it is to
+	 * be taken to be the negative base 2 logarithm of the mft_record_size
+	 * min bytes. Then:
+	 *	 mft_record_size = 2^(-clusters_per_mft_record) bytes.
+	 */
+	if (c < 0)
+		vol->mft_record_size = 1 << -c;
+	else
+		vol->mft_record_size = c << vol->cluster_size_bits;
+	if (vol->mft_record_size & (vol->mft_record_size - 1)) {
+		ntfs_log_debug("Error: %s is not a valid NTFS partition! "
+				"mft_record_size is not a power of 2.\n",
+				vol->dev->d_name);
+		return -1;
+	}
+	vol->mft_record_size_bits = ffs(vol->mft_record_size) - 1;
+	ntfs_log_debug("MftRecordSize = 0x%x\n", (unsigned)vol->mft_record_size);
+	ntfs_log_debug("MftRecordSizeBits = %u\n", vol->mft_record_size_bits);
+	/* Same as above for INDX record. */
+	c = bs->clusters_per_index_record;
+	ntfs_log_debug("ClustersPerINDXRecord = 0x%x\n", c);
+	if (c < 0)
+		vol->indx_record_size = 1 << -c;
+	else
+		vol->indx_record_size = c << vol->cluster_size_bits;
+	vol->indx_record_size_bits = ffs(vol->indx_record_size) - 1;
+	ntfs_log_debug("INDXRecordSize = 0x%x\n", (unsigned)vol->indx_record_size);
+	ntfs_log_debug("INDXRecordSizeBits = %u\n", vol->indx_record_size_bits);
+	/*
+	 * Work out the size of the MFT mirror in number of mft records. If the
+	 * cluster size is less than or equal to the size taken by four mft
+	 * records, the mft mirror stores the first four mft records. If the
+	 * cluster size is bigger than the size taken by four mft records, the
+	 * mft mirror contains as many mft records as will fit into one
+	 * cluster.
+	 */
+	if (vol->cluster_size <= 4 * vol->mft_record_size)
+		vol->mftmirr_size = 4;
+	else
+		vol->mftmirr_size = vol->cluster_size / vol->mft_record_size;
+	return 0;
+}

libntfs-3g/collate.c

@@ -0,0 +1,221 @@
+/**
+ * collate.c - NTFS collation handling.  Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2004 Anton Altaparmakov
+ * Copyright (c) 2005 Yura Pakhuchiy
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+
+#include "collate.h"
+#include "debug.h"
+#include "unistr.h"
+#include "logging.h"
+
+BOOL ntfs_is_collation_rule_supported(COLLATION_RULES cr)
+{
+	int i;
+
+	/*
+	 * FIXME:  At the moment we only support COLLATION_BINARY,
+	 * COLLATION_NTOFS_ULONG and COLLATION_FILE_NAME so we return false
+	 * for everything else.
+	 */
+	if (cr != COLLATION_BINARY && cr != COLLATION_NTOFS_ULONG &&
+			cr != COLLATION_FILE_NAME)
+		return FALSE;
+	i = le32_to_cpu(cr);
+	if (((i >= 0) && (i <= 0x02)) ||
+			((i >= 0x10) && (i <= 0x13)))
+		return TRUE;
+	
+	return FALSE;
+}
+
+/**
+ * ntfs_collate_binary - Which of two binary objects should be listed first
+ * @vol: unused
+ * @data1:
+ * @data1_len:
+ * @data2:
+ * @data2_len:
+ *
+ * Description...
+ *
+ * Returns:
+ */
+static int ntfs_collate_binary(ntfs_volume *vol __attribute__((unused)),
+		const void *data1, const int data1_len,
+		const void *data2, const int data2_len)
+{
+	int rc;
+
+	ntfs_log_trace("Entering.\n");
+	rc = memcmp(data1, data2, min(data1_len, data2_len));
+	if (!rc && (data1_len != data2_len)) {
+		if (data1_len < data2_len)
+			rc = -1;
+		else
+			rc = 1;
+	}
+	ntfs_log_trace("Done, returning %i.\n", rc);
+	return rc;
+}
+
+/**
+ * ntfs_collate_ntofs_ulong - Which of two long ints should be listed first
+ * @vol: unused
+ * @data1:
+ * @data1_len:
+ * @data2:
+ * @data2_len:
+ *
+ * Description...
+ *
+ * Returns:
+ */
+static int ntfs_collate_ntofs_ulong(ntfs_volume *vol __attribute__((unused)),
+		const void *data1, const int data1_len,
+		const void *data2, const int data2_len)
+{
+	int rc;
+	u32 d1, d2;
+
+	ntfs_log_trace("Entering.\n");
+	if (data1_len != data2_len || data1_len != 4) {
+		ntfs_log_error("data1_len or/and data2_len not equal to 4.\n");
+		return NTFS_COLLATION_ERROR;
+	}
+	d1 = le32_to_cpup(data1);
+	d2 = le32_to_cpup(data2);
+	if (d1 < d2)
+		rc = -1;
+	else {
+		if (d1 == d2)
+			rc = 0;
+		else
+			rc = 1;
+	}
+	ntfs_log_trace("Done, returning %i.\n", rc);
+	return rc;
+}
+
+/**
+ * ntfs_collate_file_name - Which of two filenames should be listed first
+ * @vol:
+ * @data1:
+ * @data1_len: unused
+ * @data2:
+ * @data2_len: unused
+ *
+ * Description...
+ *
+ * Returns:
+ */
+static int ntfs_collate_file_name(ntfs_volume *vol,
+		const void *data1, const int data1_len __attribute__((unused)),
+		const void *data2, const int data2_len __attribute__((unused)))
+{
+	int rc;
+
+	ntfs_log_trace("Entering.\n");
+	rc = ntfs_file_values_compare(data1, data2, NTFS_COLLATION_ERROR,
+			IGNORE_CASE, vol->upcase, vol->upcase_len);
+	if (!rc)
+		rc = ntfs_file_values_compare(data1, data2,
+				NTFS_COLLATION_ERROR, CASE_SENSITIVE,
+				vol->upcase, vol->upcase_len);
+	ntfs_log_trace("Done, returning %i.\n", rc);
+	return rc;
+}
+
+typedef int (*ntfs_collate_func_t)(ntfs_volume *, const void *, const int,
+		const void *, const int);
+
+static ntfs_collate_func_t ntfs_do_collate0x0[3] = {
+	ntfs_collate_binary,
+	ntfs_collate_file_name,
+	NULL/*ntfs_collate_unicode_string*/,
+};
+
+static ntfs_collate_func_t ntfs_do_collate0x1[4] = {
+	ntfs_collate_ntofs_ulong,
+	NULL/*ntfs_collate_ntofs_sid*/,
+	NULL/*ntfs_collate_ntofs_security_hash*/,
+	NULL/*ntfs_collate_ntofs_ulongs*/,
+};
+
+/**
+ * ntfs_collate - collate two data items using a specified collation rule
+ * @vol:	ntfs volume to which the data items belong
+ * @cr:		collation rule to use when comparing the items
+ * @data1:	first data item to collate
+ * @data1_len:	length in bytes of @data1
+ * @data2:	second data item to collate
+ * @data2_len:	length in bytes of @data2
+ *
+ * Collate the two data items @data1 and @data2 using the collation rule @cr
+ * and return -1, 0, or 1 if @data1 is found, respectively, to collate before,
+ * to match, or to collate after @data2.
+ *
+ * For speed we use the collation rule @cr as an index into two tables of
+ * function pointers to call the appropriate collation function.
+ *
+ * Return NTFS_COLLATION_ERROR if error occurred.
+ */
+int ntfs_collate(ntfs_volume *vol, COLLATION_RULES cr,
+		const void *data1, const int data1_len,
+		const void *data2, const int data2_len)
+{
+	int i;
+
+	ntfs_log_trace("Entering.\n");
+	if (!vol || !data1 || !data2 || data1_len < 0 || data2_len < 0) {
+		ntfs_log_error("Invalid arguments passed.\n");
+		return NTFS_COLLATION_ERROR;
+	}
+	/*
+	 * FIXME:  At the moment we only support COLLATION_BINARY,
+	 * COLLATION_NTOFS_ULONG and COLLATION_FILE_NAME so we return error
+	 * for everything else.
+	 */
+	if (cr != COLLATION_BINARY && cr != COLLATION_NTOFS_ULONG &&
+			cr != COLLATION_FILE_NAME)
+		goto err;
+	i = le32_to_cpu(cr);
+	if (i < 0)
+		goto err;
+	if (i <= 0x02)
+		return ntfs_do_collate0x0[i](vol, data1, data1_len,
+				data2, data2_len);
+	if (i < 0x10)
+		goto err;
+	i -= 0x10;
+	if (i <= 3)
+		return ntfs_do_collate0x1[i](vol, data1, data1_len,
+				data2, data2_len);
+err:
+	ntfs_log_debug("Unknown collation rule.\n");
+	return NTFS_COLLATION_ERROR;
+}

libntfs-3g/compat.c

@@ -0,0 +1,73 @@
+/**
+ * compat.c - Tweaks for Windows compatibility
+ *
+ * Copyright (c) 2002 Richard Russon
+ * Copyright (c) 2002-2004 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef WINDOWS
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "compat.h"
+
+/* TODO: Add check for FFS in the configure script... (AIA) */
+
+#ifndef HAVE_FFS
+/**
+ * ffs - Find the first set bit in an int
+ * @x:
+ *
+ * Description...
+ *
+ * Returns:
+ */
+int ffs(int x)
+{
+	int r = 1;
+
+	if (!x)
+		return 0;
+	if (!(x & 0xffff)) {
+		x >>= 16;
+		r += 16;
+	}
+	if (!(x & 0xff)) {
+		x >>= 8;
+		r += 8;
+	}
+	if (!(x & 0xf)) {
+		x >>= 4;
+		r += 4;
+	}
+	if (!(x & 3)) {
+		x >>= 2;
+		r += 2;
+	}
+	if (!(x & 1)) {
+		x >>= 1;
+		r += 1;
+	}
+	return r;
+}
+#endif /* HAVE_FFS */
+
+#endif /* WINDOWS */
+

libntfs-3g/compress.c

@@ -0,0 +1,552 @@
+/**
+ * compress.c - Compressed attribute handling code.  Originated from the Linux-NTFS
+ *		project.
+ *
+ * Copyright (c) 2004-2005 Anton Altaparmakov
+ * Copyright (c) 2004-2006 Szabolcs Szakacsits
+ * Copyright (c)      2005 Yura Pakhuchiy
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_STDIO_H
+#include <stdio.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#include "attrib.h"
+#include "debug.h"
+#include "volume.h"
+#include "types.h"
+#include "layout.h"
+#include "runlist.h"
+#include "compress.h"
+#include "logging.h"
+#include "misc.h"
+
+/**
+ * enum ntfs_compression_constants - constants used in the compression code
+ */
+typedef enum {
+	/* Token types and access mask. */
+	NTFS_SYMBOL_TOKEN	=	0,
+	NTFS_PHRASE_TOKEN	=	1,
+	NTFS_TOKEN_MASK		=	1,
+
+	/* Compression sub-block constants. */
+	NTFS_SB_SIZE_MASK	=	0x0fff,
+	NTFS_SB_SIZE		=	0x1000,
+	NTFS_SB_IS_COMPRESSED	=	0x8000,
+} ntfs_compression_constants;
+
+/**
+ * ntfs_decompress - decompress a compression block into an array of pages
+ * @dest:	buffer to which to write the decompressed data
+ * @dest_size:	size of buffer @dest in bytes
+ * @cb_start:	compression block to decompress
+ * @cb_size:	size of compression block @cb_start in bytes
+ *
+ * This decompresses the compression block @cb_start into the destination
+ * buffer @dest.
+ *
+ * @cb_start is a pointer to the compression block which needs decompressing
+ * and @cb_size is the size of @cb_start in bytes (8-64kiB).
+ *
+ * Return 0 if success or -EOVERFLOW on error in the compressed stream.
+ */
+static int ntfs_decompress(u8 *dest, const u32 dest_size,
+		u8 *const cb_start, const u32 cb_size)
+{
+	/*
+	 * Pointers into the compressed data, i.e. the compression block (cb),
+	 * and the therein contained sub-blocks (sb).
+	 */
+	u8 *cb_end = cb_start + cb_size; /* End of cb. */
+	u8 *cb = cb_start;	/* Current position in cb. */
+	u8 *cb_sb_start = cb;	/* Beginning of the current sb in the cb. */
+	u8 *cb_sb_end;		/* End of current sb / beginning of next sb. */
+	/* Variables for uncompressed data / destination. */
+	u8 *dest_end = dest + dest_size;	/* End of dest buffer. */
+	u8 *dest_sb_start;	/* Start of current sub-block in dest. */
+	u8 *dest_sb_end;	/* End of current sb in dest. */
+	/* Variables for tag and token parsing. */
+	u8 tag;			/* Current tag. */
+	int token;		/* Loop counter for the eight tokens in tag. */
+
+	ntfs_log_trace("Entering, cb_size = 0x%x.\n", (unsigned)cb_size);
+do_next_sb:
+	ntfs_log_debug("Beginning sub-block at offset = 0x%x in the cb.\n",
+			cb - cb_start);
+	/*
+	 * Have we reached the end of the compression block or the end of the
+	 * decompressed data?  The latter can happen for example if the current
+	 * position in the compression block is one byte before its end so the
+	 * first two checks do not detect it.
+	 */
+	if (cb == cb_end || !le16_to_cpup((u16*)cb) || dest == dest_end) {
+		ntfs_log_debug("Completed. Returning success (0).\n");
+		return 0;
+	}
+	/* Setup offset for the current sub-block destination. */
+	dest_sb_start = dest;
+	dest_sb_end = dest + NTFS_SB_SIZE;
+	/* Check that we are still within allowed boundaries. */
+	if (dest_sb_end > dest_end)
+		goto return_overflow;
+	/* Does the minimum size of a compressed sb overflow valid range? */
+	if (cb + 6 > cb_end)
+		goto return_overflow;
+	/* Setup the current sub-block source pointers and validate range. */
+	cb_sb_start = cb;
+	cb_sb_end = cb_sb_start + (le16_to_cpup((u16*)cb) & NTFS_SB_SIZE_MASK)
+			+ 3;
+	if (cb_sb_end > cb_end)
+		goto return_overflow;
+	/* Now, we are ready to process the current sub-block (sb). */
+	if (!(le16_to_cpup((u16*)cb) & NTFS_SB_IS_COMPRESSED)) {
+		ntfs_log_debug("Found uncompressed sub-block.\n");
+		/* This sb is not compressed, just copy it into destination. */
+		/* Advance source position to first data byte. */
+		cb += 2;
+		/* An uncompressed sb must be full size. */
+		if (cb_sb_end - cb != NTFS_SB_SIZE)
+			goto return_overflow;
+		/* Copy the block and advance the source position. */
+		memcpy(dest, cb, NTFS_SB_SIZE);
+		cb += NTFS_SB_SIZE;
+		/* Advance destination position to next sub-block. */
+		dest += NTFS_SB_SIZE;
+		goto do_next_sb;
+	}
+	ntfs_log_debug("Found compressed sub-block.\n");
+	/* This sb is compressed, decompress it into destination. */
+	/* Forward to the first tag in the sub-block. */
+	cb += 2;
+do_next_tag:
+	if (cb == cb_sb_end) {
+		/* Check if the decompressed sub-block was not full-length. */
+		if (dest < dest_sb_end) {
+			int nr_bytes = dest_sb_end - dest;
+
+			ntfs_log_debug("Filling incomplete sub-block with zeroes.\n");
+			/* Zero remainder and update destination position. */
+			memset(dest, 0, nr_bytes);
+			dest += nr_bytes;
+		}
+		/* We have finished the current sub-block. */
+		goto do_next_sb;
+	}
+	/* Check we are still in range. */
+	if (cb > cb_sb_end || dest > dest_sb_end)
+		goto return_overflow;
+	/* Get the next tag and advance to first token. */
+	tag = *cb++;
+	/* Parse the eight tokens described by the tag. */
+	for (token = 0; token < 8; token++, tag >>= 1) {
+		u16 lg, pt, length, max_non_overlap;
+		register u16 i;
+		u8 *dest_back_addr;
+
+		/* Check if we are done / still in range. */
+		if (cb >= cb_sb_end || dest > dest_sb_end)
+			break;
+		/* Determine token type and parse appropriately.*/
+		if ((tag & NTFS_TOKEN_MASK) == NTFS_SYMBOL_TOKEN) {
+			/*
+			 * We have a symbol token, copy the symbol across, and
+			 * advance the source and destination positions.
+			 */
+			*dest++ = *cb++;
+			/* Continue with the next token. */
+			continue;
+		}
+		/*
+		 * We have a phrase token. Make sure it is not the first tag in
+		 * the sb as this is illegal and would confuse the code below.
+		 */
+		if (dest == dest_sb_start)
+			goto return_overflow;
+		/*
+		 * Determine the number of bytes to go back (p) and the number
+		 * of bytes to copy (l). We use an optimized algorithm in which
+		 * we first calculate log2(current destination position in sb),
+		 * which allows determination of l and p in O(1) rather than
+		 * O(n). We just need an arch-optimized log2() function now.
+		 */
+		lg = 0;
+		for (i = dest - dest_sb_start - 1; i >= 0x10; i >>= 1)
+			lg++;
+		/* Get the phrase token into i. */
+		pt = le16_to_cpup((u16*)cb);
+		/*
+		 * Calculate starting position of the byte sequence in
+		 * the destination using the fact that p = (pt >> (12 - lg)) + 1
+		 * and make sure we don't go too far back.
+		 */
+		dest_back_addr = dest - (pt >> (12 - lg)) - 1;
+		if (dest_back_addr < dest_sb_start)
+			goto return_overflow;
+		/* Now calculate the length of the byte sequence. */
+		length = (pt & (0xfff >> lg)) + 3;
+		/* Verify destination is in range. */
+		if (dest + length > dest_sb_end)
+			goto return_overflow;
+		/* The number of non-overlapping bytes. */
+		max_non_overlap = dest - dest_back_addr;
+		if (length <= max_non_overlap) {
+			/* The byte sequence doesn't overlap, just copy it. */
+			memcpy(dest, dest_back_addr, length);
+			/* Advance destination pointer. */
+			dest += length;
+		} else {
+			/*
+			 * The byte sequence does overlap, copy non-overlapping
+			 * part and then do a slow byte by byte copy for the
+			 * overlapping part. Also, advance the destination
+			 * pointer.
+			 */
+			memcpy(dest, dest_back_addr, max_non_overlap);
+			dest += max_non_overlap;
+			dest_back_addr += max_non_overlap;
+			length -= max_non_overlap;
+			while (length--)
+				*dest++ = *dest_back_addr++;
+		}
+		/* Advance source position and continue with the next token. */
+		cb += 2;
+	}
+	/* No tokens left in the current tag. Continue with the next tag. */
+	goto do_next_tag;
+return_overflow:
+	errno = EOVERFLOW;
+	ntfs_log_perror("Failed to decompress file");
+	return -1;
+}
+
+/**
+ * ntfs_is_cb_compressed - internal function, do not use
+ *
+ * This is a very specialised function determining if a cb is compressed or
+ * uncompressed.  It is assumed that checking for a sparse cb has already been
+ * performed and that the cb is not sparse.  It makes all sorts of other
+ * assumptions as well and hence it is not useful anywhere other than where it
+ * is used at the moment.  Please, do not make this function available for use
+ * outside of compress.c as it is bound to confuse people and not do what they
+ * want.
+ *
+ * Return TRUE on errors so that the error will be detected later on in the
+ * code.  Might be a bit confusing to debug but there really should never be
+ * errors coming from here.
+ */
+static BOOL ntfs_is_cb_compressed(ntfs_attr *na, runlist_element *rl, 
+				  VCN cb_start_vcn, int cb_clusters)
+{
+	/*
+	 * The simplest case: the run starting at @cb_start_vcn contains
+	 * @cb_clusters clusters which are all not sparse, thus the cb is not
+	 * compressed.
+	 */
+restart:
+	cb_clusters -= rl->length - (cb_start_vcn - rl->vcn);
+	while (cb_clusters > 0) {
+		/* Go to the next run. */
+		rl++;
+		/* Map the next runlist fragment if it is not mapped. */
+		if (rl->lcn < LCN_HOLE || !rl->length) {
+			cb_start_vcn = rl->vcn;
+			rl = ntfs_attr_find_vcn(na, rl->vcn);
+			if (!rl || rl->lcn < LCN_HOLE || !rl->length)
+				return TRUE;
+			/*
+			 * If the runs were merged need to deal with the
+			 * resulting partial run so simply restart.
+			 */
+			if (rl->vcn < cb_start_vcn)
+				goto restart;
+		}
+		/* If the current run is sparse, the cb is compressed. */
+		if (rl->lcn == LCN_HOLE)
+			return TRUE;
+		/* If the whole cb is not sparse, it is not compressed. */
+		if (rl->length >= cb_clusters)
+			return FALSE;
+		cb_clusters -= rl->length;
+	};
+	/* All cb_clusters were not sparse thus the cb is not compressed. */
+	return FALSE;
+}
+
+/**
+ * ntfs_compressed_attr_pread - read from a compressed attribute
+ * @na:		ntfs attribute to read from
+ * @pos:	byte position in the attribute to begin reading from
+ * @count:	number of bytes to read
+ * @b:		output data buffer
+ *
+ * NOTE:  You probably want to be using attrib.c::ntfs_attr_pread() instead.
+ *
+ * This function will read @count bytes starting at offset @pos from the
+ * compressed ntfs attribute @na into the data buffer @b.
+ *
+ * On success, return the number of successfully read bytes.  If this number
+ * is lower than @count this means that the read reached end of file or that
+ * an error was encountered during the read so that the read is partial.
+ * 0 means end of file or nothing was read (also return 0 when @count is 0).
+ *
+ * On error and nothing has been read, return -1 with errno set appropriately
+ * to the return code of ntfs_pread(), or to EINVAL in case of invalid
+ * arguments.
+ */
+s64 ntfs_compressed_attr_pread(ntfs_attr *na, s64 pos, s64 count, void *b)
+{
+	s64 br, to_read, ofs, total, total2;
+	u64 cb_size_mask;
+	VCN start_vcn, vcn, end_vcn;
+	ntfs_volume *vol;
+	runlist_element *rl;
+	u8 *dest, *cb, *cb_pos, *cb_end;
+	u32 cb_size;
+	int err;
+	unsigned int nr_cbs, cb_clusters;
+
+	ntfs_log_trace("Entering for inode 0x%llx, attr 0x%x, pos 0x%llx, count 0x%llx.\n",
+			(unsigned long long)na->ni->mft_no, na->type,
+			(long long)pos, (long long)count);
+	if (!na || !NAttrCompressed(na) || !na->ni || !na->ni->vol || !b ||
+			pos < 0 || count < 0) {
+		errno = EINVAL;
+		return -1;
+	}
+	/*
+	 * Encrypted attributes are not supported.  We return access denied,
+	 * which is what Windows NT4 does, too.
+	 */
+	if (NAttrEncrypted(na)) {
+		errno = EACCES;
+		return -1;
+	}
+	if (!count)
+		return 0;
+	/* Truncate reads beyond end of attribute. */
+	if (pos + count > na->data_size) {
+		if (pos >= na->data_size) {
+			return 0;
+		}
+		count = na->data_size - pos;
+	}
+	/* If it is a resident attribute, simply use ntfs_attr_pread(). */
+	if (!NAttrNonResident(na))
+		return ntfs_attr_pread(na, pos, count, b);
+	total = total2 = 0;
+	/* Zero out reads beyond initialized size. */
+	if (pos + count > na->initialized_size) {
+		if (pos >= na->initialized_size) {
+			memset(b, 0, count);
+			return count;
+		}
+		total2 = pos + count - na->initialized_size;
+		count -= total2;
+		memset((u8*)b + count, 0, total2);
+	}
+	vol = na->ni->vol;
+	cb_size = na->compression_block_size;
+	cb_size_mask = cb_size - 1UL;
+	cb_clusters = na->compression_block_clusters;
+	
+	/* Need a temporary buffer for each loaded compression block. */
+	cb = ntfs_malloc(cb_size);
+	if (!cb)
+		return -1;
+	
+	/* Need a temporary buffer for each uncompressed block. */
+	dest = ntfs_malloc(cb_size);
+	if (!dest) {
+		free(cb);
+		return -1;
+	}
+	/*
+	 * The first vcn in the first compression block (cb) which we need to
+	 * decompress.
+	 */
+	start_vcn = (pos & ~cb_size_mask) >> vol->cluster_size_bits;
+	/* Offset in the uncompressed cb at which to start reading data. */
+	ofs = pos & cb_size_mask;
+	/*
+	 * The first vcn in the cb after the last cb which we need to
+	 * decompress.
+	 */
+	end_vcn = ((pos + count + cb_size - 1) & ~cb_size_mask) >>
+			vol->cluster_size_bits;
+	/* Number of compression blocks (cbs) in the wanted vcn range. */
+	nr_cbs = (end_vcn - start_vcn) << vol->cluster_size_bits >>
+			na->compression_block_size_bits;
+	cb_end = cb + cb_size;
+do_next_cb:
+	nr_cbs--;
+	cb_pos = cb;
+	vcn = start_vcn;
+	start_vcn += cb_clusters;
+
+	/* Check whether the compression block is sparse. */
+	rl = ntfs_attr_find_vcn(na, vcn);
+	if (!rl || rl->lcn < LCN_HOLE) {
+		free(cb);
+		free(dest);
+		if (total)
+			return total;
+		/* FIXME: Do we want EIO or the error code? (AIA) */
+		errno = EIO;
+		return -1;
+	}
+	if (rl->lcn == LCN_HOLE) {
+		/* Sparse cb, zero out destination range overlapping the cb. */
+		ntfs_log_debug("Found sparse compression block.\n");
+		to_read = min(count, cb_size - ofs);
+		memset(b, 0, to_read);
+		ofs = 0;
+		total += to_read;
+		count -= to_read;
+		b = (u8*)b + to_read;
+	} else if (!ntfs_is_cb_compressed(na, rl, vcn, cb_clusters)) {
+		s64 tdata_size, tinitialized_size;
+		/*
+		 * Uncompressed cb, read it straight into the destination range
+		 * overlapping the cb.
+		 */
+		ntfs_log_debug("Found uncompressed compression block.\n");
+		/*
+		 * Read the uncompressed data into the destination buffer.
+		 * NOTE: We cheat a little bit here by marking the attribute as
+		 * not compressed in the ntfs_attr structure so that we can
+		 * read the data by simply using ntfs_attr_pread().  (-8
+		 * NOTE: we have to modify data_size and initialized_size
+		 * temporarily as well...
+		 */
+		to_read = min(count, cb_size - ofs);
+		ofs += vcn << vol->cluster_size_bits;
+		NAttrClearCompressed(na);
+		tdata_size = na->data_size;
+		tinitialized_size = na->initialized_size;
+		na->data_size = na->initialized_size = na->allocated_size;
+		do {
+			br = ntfs_attr_pread(na, ofs, to_read, b);
+			if (br < 0) {
+				err = errno;
+				na->data_size = tdata_size;
+				na->initialized_size = tinitialized_size;
+				NAttrSetCompressed(na);
+				free(cb);
+				free(dest);
+				if (total)
+					return total;
+				errno = err;
+				return br;
+			}
+			total += br;
+			count -= br;
+			b = (u8*)b + br;
+			to_read -= br;
+			ofs += br;
+		} while (to_read > 0);
+		na->data_size = tdata_size;
+		na->initialized_size = tinitialized_size;
+		NAttrSetCompressed(na);
+		ofs = 0;
+	} else {
+		s64 tdata_size, tinitialized_size;
+
+		/*
+		 * Compressed cb, decompress it into the temporary buffer, then
+		 * copy the data to the destination range overlapping the cb.
+		 */
+		ntfs_log_debug("Found compressed compression block.\n");
+		/*
+		 * Read the compressed data into the temporary buffer.
+		 * NOTE: We cheat a little bit here by marking the attribute as
+		 * not compressed in the ntfs_attr structure so that we can
+		 * read the raw, compressed data by simply using
+		 * ntfs_attr_pread().  (-8
+		 * NOTE: We have to modify data_size and initialized_size
+		 * temporarily as well...
+		 */
+		to_read = cb_size;
+		NAttrClearCompressed(na);
+		tdata_size = na->data_size;
+		tinitialized_size = na->initialized_size;
+		na->data_size = na->initialized_size = na->allocated_size;
+		do {
+			br = ntfs_attr_pread(na,
+					(vcn << vol->cluster_size_bits) +
+					(cb_pos - cb), to_read, cb_pos);
+			if (br < 0) {
+				err = errno;
+				na->data_size = tdata_size;
+				na->initialized_size = tinitialized_size;
+				NAttrSetCompressed(na);
+				free(cb);
+				free(dest);
+				if (total)
+					return total;
+				errno = err;
+				return br;
+			}
+			cb_pos += br;
+			to_read -= br;
+		} while (to_read > 0);
+		na->data_size = tdata_size;
+		na->initialized_size = tinitialized_size;
+		NAttrSetCompressed(na);
+		/* Just a precaution. */
+		if (cb_pos + 2 <= cb_end)
+			*(u16*)cb_pos = 0;
+		ntfs_log_debug("Successfully read the compression block.\n");
+		if (ntfs_decompress(dest, cb_size, cb, cb_size) < 0) {
+			err = errno;
+			free(cb);
+			free(dest);
+			if (total)
+				return total;
+			errno = err;
+			return -1;
+		}
+		to_read = min(count, cb_size - ofs);
+		memcpy(b, dest + ofs, to_read);
+		total += to_read;
+		count -= to_read;
+		b = (u8*)b + to_read;
+		ofs = 0;
+	}
+	/* Do we have more work to do? */
+	if (nr_cbs)
+		goto do_next_cb;
+	/* We no longer need the buffers. */
+	free(cb);
+	free(dest);
+	/* Return number of bytes read. */
+	return total + total2;
+}

libntfs-3g/debug.c

@@ -0,0 +1,73 @@
+/**
+ * debug.c - Debugging output functions. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2002-2004 Anton Altaparmakov
+ * Copyright (c) 2004-2006 Szabolcs Szakacsits
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#include "types.h"
+#include "runlist.h"
+#include "debug.h"
+#include "logging.h"
+
+#ifdef DEBUG
+/**
+ * ntfs_debug_runlist_dump - Dump a runlist.
+ * @rl:
+ *
+ * Description...
+ *
+ * Returns:
+ */
+void ntfs_debug_runlist_dump(const runlist_element *rl)
+{
+	int i = 0;
+	const char *lcn_str[5] = { "LCN_HOLE         ", "LCN_RL_NOT_MAPPED",
+				   "LCN_ENOENT       ", "LCN_EINVAL       ",
+				   "LCN_unknown      " };
+
+	ntfs_log_debug("NTFS-fs DEBUG: Dumping runlist (values in hex):\n");
+	if (!rl) {
+		ntfs_log_debug("Run list not present.\n");
+		return;
+	}
+	ntfs_log_debug("VCN              LCN               Run length\n");
+	do {
+		LCN lcn = (rl + i)->lcn;
+
+		if (lcn < (LCN)0) {
+			int idx = -lcn - 1;
+
+			if (idx > -LCN_EINVAL - 1)
+				idx = 4;
+			ntfs_log_debug("%-16llx %s %-16llx%s\n", rl[i].vcn, lcn_str[idx], rl[i].length, rl[i].length ? "" : " (runlist end)");
+		} else
+			ntfs_log_debug("%-16llx %-16llx  %-16llx%s\n", rl[i].vcn, rl[i].lcn, rl[i].length, rl[i].length ? "" : " (runlist end)");
+	} while (rl[i++].length);
+}
+
+#endif
+

libntfs-3g/device.c

@@ -0,0 +1,734 @@
+/**
+ * device.c - Low level device io functions. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2004-2006 Anton Altaparmakov
+ * Copyright (c) 2004-2006 Szabolcs Szakacsits
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#ifdef HAVE_STDIO_H
+#include <stdio.h>
+#endif
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+#ifdef HAVE_SYS_MOUNT_H
+#include <sys/mount.h>
+#endif
+#ifdef HAVE_LINUX_FD_H
+#include <linux/fd.h>
+#endif
+#ifdef HAVE_LINUX_HDREG_H
+#include <linux/hdreg.h>
+#endif
+
+#include "types.h"
+#include "mst.h"
+#include "debug.h"
+#include "device.h"
+#include "logging.h"
+#include "misc.h"
+
+#if defined(linux) && defined(_IO) && !defined(BLKGETSIZE)
+#define BLKGETSIZE	_IO(0x12,96)  /* Get device size in 512-byte blocks. */
+#endif
+#if defined(linux) && defined(_IOR) && !defined(BLKGETSIZE64)
+#define BLKGETSIZE64	_IOR(0x12,114,size_t)	/* Get device size in bytes. */
+#endif
+#if defined(linux) && !defined(HDIO_GETGEO)
+#define HDIO_GETGEO	0x0301	/* Get device geometry. */
+#endif
+#if defined(linux) && defined(_IO) && !defined(BLKSSZGET)
+#	define BLKSSZGET _IO(0x12,104) /* Get device sector size in bytes. */
+#endif
+#if defined(linux) && defined(_IO) && !defined(BLKBSZSET)
+#	define BLKBSZSET _IOW(0x12,113,size_t) /* Set device block size in bytes. */
+#endif
+
+/**
+ * ntfs_device_alloc - allocate an ntfs device structure and pre-initialize it
+ * @name:	name of the device (must be present)
+ * @state:	initial device state (usually zero)
+ * @dops:	ntfs device operations to use with the device (must be present)
+ * @priv_data:	pointer to private data (optional)
+ *
+ * Allocate an ntfs device structure and pre-initialize it with the user-
+ * specified device operations @dops, device state @state, device name @name,
+ * and optional private data @priv_data.
+ *
+ * Note, @name is copied and can hence be freed after this functions returns.
+ *
+ * On success return a pointer to the allocated ntfs device structure and on
+ * error return NULL with errno set to the error code returned by ntfs_malloc().
+ */
+struct ntfs_device *ntfs_device_alloc(const char *name, const long state,
+		struct ntfs_device_operations *dops, void *priv_data)
+{
+	struct ntfs_device *dev;
+
+	if (!name) {
+		errno = EINVAL;
+		return NULL;
+	}
+
+	dev = ntfs_malloc(sizeof(struct ntfs_device));
+	if (dev) {
+		if (!(dev->d_name = strdup(name))) {
+			int eo = errno;
+			free(dev);
+			errno = eo;
+			return NULL;
+		}
+		dev->d_ops = dops;
+		dev->d_state = state;
+		dev->d_private = priv_data;
+	}
+	return dev;
+}
+
+/**
+ * ntfs_device_free - free an ntfs device structure
+ * @dev:	ntfs device structure to free
+ *
+ * Free the ntfs device structure @dev.
+ *
+ * Return 0 on success or -1 on error with errno set to the error code. The
+ * following error codes are defined:
+ *	EINVAL		Invalid pointer @dev.
+ *	EBUSY		Device is still open. Close it before freeing it!
+ */
+int ntfs_device_free(struct ntfs_device *dev)
+{
+	if (!dev) {
+		errno = EINVAL;
+		return -1;
+	}
+	if (NDevOpen(dev)) {
+		errno = EBUSY;
+		return -1;
+	}
+	free(dev->d_name);
+	free(dev);
+	return 0;
+}
+
+/**
+ * ntfs_pread - positioned read from disk
+ * @dev:	device to read from
+ * @pos:	position in device to read from
+ * @count:	number of bytes to read
+ * @b:		output data buffer
+ *
+ * This function will read @count bytes from device @dev at position @pos into
+ * the data buffer @b.
+ *
+ * On success, return the number of successfully read bytes. If this number is
+ * lower than @count this means that we have either reached end of file or
+ * encountered an error during the read so that the read is partial. 0 means
+ * end of file or nothing to read (@count is 0).
+ *
+ * On error and nothing has been read, return -1 with errno set appropriately
+ * to the return code of either seek, read, or set to EINVAL in case of
+ * invalid arguments.
+ */
+s64 ntfs_pread(struct ntfs_device *dev, const s64 pos, s64 count, void *b)
+{
+	s64 br, total;
+	struct ntfs_device_operations *dops;
+
+	ntfs_log_trace("Entering for pos 0x%llx, count 0x%llx.\n", pos, count);
+	if (!b || count < 0 || pos < 0) {
+		errno = EINVAL;
+		return -1;
+	}
+	if (!count)
+		return 0;
+	dops = dev->d_ops;
+	/* Locate to position. */
+	if (dops->seek(dev, pos, SEEK_SET) == (off_t)-1) {
+		ntfs_log_perror("ntfs_pread: device seek to 0x%llx returned error",
+				pos);
+		return -1;
+	}
+	/* Read the data. */
+	for (total = 0; count; count -= br, total += br) {
+		br = dops->read(dev, (char*)b + total, count);
+		/* If everything ok, continue. */
+		if (br > 0)
+			continue;
+		/* If EOF or error return number of bytes read. */
+		if (!br || total)
+			return total;
+		/* Nothing read and error, return error status. */
+		return br;
+	}
+	/* Finally, return the number of bytes read. */
+	return total;
+}
+
+/**
+ * ntfs_pwrite - positioned write to disk
+ * @dev:	device to write to
+ * @pos:	position in file descriptor to write to
+ * @count:	number of bytes to write
+ * @b:		data buffer to write to disk
+ *
+ * This function will write @count bytes from data buffer @b to the device @dev
+ * at position @pos.
+ *
+ * On success, return the number of successfully written bytes. If this number
+ * is lower than @count this means that the write has been interrupted in
+ * flight or that an error was encountered during the write so that the write
+ * is partial. 0 means nothing was written (also return 0 when @count is 0).
+ *
+ * On error and nothing has been written, return -1 with errno set
+ * appropriately to the return code of either seek, write, or set
+ * to EINVAL in case of invalid arguments.
+ */
+s64 ntfs_pwrite(struct ntfs_device *dev, const s64 pos, s64 count,
+		const void *b)
+{
+	s64 written, total, ret = -1;
+	struct ntfs_device_operations *dops;
+
+	ntfs_log_trace("Entering for pos 0x%llx, count 0x%llx.\n", pos, count);
+	if (!b || count < 0 || pos < 0) {
+		errno = EINVAL;
+		goto out;
+	}
+	if (!count)
+		return 0;
+	if (NDevReadOnly(dev)) {
+		errno = EROFS;
+		goto out;
+	}
+	dops = dev->d_ops;
+	/* Locate to position. */
+	if (dops->seek(dev, pos, SEEK_SET) == (off_t)-1) {
+		ntfs_log_perror("ntfs_pwrite: seek to 0x%llx returned error",
+				pos);
+		goto out;
+	}
+	NDevSetDirty(dev);
+	for (total = 0; count; count -= written, total += written) {
+		written = dops->write(dev, (const char*)b + total, count);
+		/* If everything ok, continue. */
+		if (written > 0)
+			continue;
+		/*
+		 * If nothing written or error return number of bytes written.
+		 */
+		if (!written || total)
+			break;
+		/* Nothing written and error, return error status. */
+		total = written;
+		break;
+	}
+	ret = total;
+out:	
+	return ret;
+}
+
+/**
+ * ntfs_mst_pread - multi sector transfer (mst) positioned read
+ * @dev:	device to read from
+ * @pos:	position in file descriptor to read from
+ * @count:	number of blocks to read
+ * @bksize:	size of each block that needs mst deprotecting
+ * @b:		output data buffer
+ *
+ * Multi sector transfer (mst) positioned read. This function will read @count
+ * blocks of size @bksize bytes each from device @dev at position @pos into the
+ * the data buffer @b.
+ *
+ * On success, return the number of successfully read blocks. If this number is
+ * lower than @count this means that we have reached end of file, that the read
+ * was interrupted, or that an error was encountered during the read so that
+ * the read is partial. 0 means end of file or nothing was read (also return 0
+ * when @count or @bksize are 0).
+ *
+ * On error and nothing was read, return -1 with errno set appropriately to the
+ * return code of either seek, read, or set to EINVAL in case of invalid
+ * arguments.
+ *
+ * NOTE: If an incomplete multi sector transfer has been detected the magic
+ * will have been changed to magic_BAAD but no error will be returned. Thus it
+ * is possible that we return count blocks as being read but that any number
+ * (between zero and count!) of these blocks is actually subject to a multi
+ * sector transfer error. This should be detected by the caller by checking for
+ * the magic being "BAAD".
+ */
+s64 ntfs_mst_pread(struct ntfs_device *dev, const s64 pos, s64 count,
+		const u32 bksize, void *b)
+{
+	s64 br, i;
+
+	if (bksize & (bksize - 1) || bksize % NTFS_BLOCK_SIZE) {
+		errno = EINVAL;
+		return -1;
+	}
+	/* Do the read. */
+	br = ntfs_pread(dev, pos, count * bksize, b);
+	if (br < 0)
+		return br;
+	/*
+	 * Apply fixups to successfully read data, disregarding any errors
+	 * returned from the MST fixup function. This is because we want to
+	 * fixup everything possible and we rely on the fact that the "BAAD"
+	 * magic will be detected later on.
+	 */
+	count = br / bksize;
+	for (i = 0; i < count; ++i)
+		ntfs_mst_post_read_fixup((NTFS_RECORD*)
+				((u8*)b + i * bksize), bksize);
+	/* Finally, return the number of complete blocks read. */
+	return count;
+}
+
+/**
+ * ntfs_mst_pwrite - multi sector transfer (mst) positioned write
+ * @dev:	device to write to
+ * @pos:	position in file descriptor to write to
+ * @count:	number of blocks to write
+ * @bksize:	size of each block that needs mst protecting
+ * @b:		data buffer to write to disk
+ *
+ * Multi sector transfer (mst) positioned write. This function will write
+ * @count blocks of size @bksize bytes each from data buffer @b to the device
+ * @dev at position @pos.
+ *
+ * On success, return the number of successfully written blocks. If this number
+ * is lower than @count this means that the write has been interrupted or that
+ * an error was encountered during the write so that the write is partial. 0
+ * means nothing was written (also return 0 when @count or @bksize are 0).
+ *
+ * On error and nothing has been written, return -1 with errno set
+ * appropriately to the return code of either seek, write, or set
+ * to EINVAL in case of invalid arguments.
+ *
+ * NOTE: We mst protect the data, write it, then mst deprotect it using a quick
+ * deprotect algorithm (no checking). This saves us from making a copy before
+ * the write and at the same time causes the usn to be incremented in the
+ * buffer. This conceptually fits in better with the idea that cached data is
+ * always deprotected and protection is performed when the data is actually
+ * going to hit the disk and the cache is immediately deprotected again
+ * simulating an mst read on the written data. This way cache coherency is
+ * achieved.
+ */
+s64 ntfs_mst_pwrite(struct ntfs_device *dev, const s64 pos, s64 count,
+		const u32 bksize, void *b)
+{
+	s64 written, i;
+
+	if (count < 0 || bksize % NTFS_BLOCK_SIZE) {
+		errno = EINVAL;
+		return -1;
+	}
+	if (!count)
+		return 0;
+	/* Prepare data for writing. */
+	for (i = 0; i < count; ++i) {
+		int err;
+
+		err = ntfs_mst_pre_write_fixup((NTFS_RECORD*)
+				((u8*)b + i * bksize), bksize);
+		if (err < 0) {
+			/* Abort write at this position. */
+			if (!i)
+				return err;
+			count = i;
+			break;
+		}
+	}
+	/* Write the prepared data. */
+	written = ntfs_pwrite(dev, pos, count * bksize, b);
+	/* Quickly deprotect the data again. */
+	for (i = 0; i < count; ++i)
+		ntfs_mst_post_write_fixup((NTFS_RECORD*)((u8*)b + i * bksize));
+	if (written <= 0)
+		return written;
+	/* Finally, return the number of complete blocks written. */
+	return written / bksize;
+}
+
+/**
+ * ntfs_cluster_read - read ntfs clusters
+ * @vol:	volume to read from
+ * @lcn:	starting logical cluster number
+ * @count:	number of clusters to read
+ * @b:		output data buffer
+ *
+ * Read @count ntfs clusters starting at logical cluster number @lcn from
+ * volume @vol into buffer @b. Return number of clusters read or -1 on error,
+ * with errno set to the error code.
+ */
+s64 ntfs_cluster_read(const ntfs_volume *vol, const s64 lcn, const s64 count,
+		void *b)
+{
+	s64 br;
+
+	if (!vol || lcn < 0 || count < 0) {
+		errno = EINVAL;
+		return -1;
+	}
+	if (vol->nr_clusters < lcn + count) {
+		errno = ESPIPE;
+		ntfs_log_perror("Trying to read outside of volume "
+				"(%lld < %lld)", vol->nr_clusters, lcn + count);
+		return -1;
+	}
+	br = ntfs_pread(vol->dev, lcn << vol->cluster_size_bits,
+			count << vol->cluster_size_bits, b);
+	if (br < 0) {
+		ntfs_log_perror("Error reading cluster(s)");
+		return br;
+	}
+	return br >> vol->cluster_size_bits;
+}
+
+/**
+ * ntfs_cluster_write - write ntfs clusters
+ * @vol:	volume to write to
+ * @lcn:	starting logical cluster number
+ * @count:	number of clusters to write
+ * @b:		data buffer to write to disk
+ *
+ * Write @count ntfs clusters starting at logical cluster number @lcn from
+ * buffer @b to volume @vol. Return the number of clusters written or -1 on
+ * error, with errno set to the error code.
+ */
+s64 ntfs_cluster_write(const ntfs_volume *vol, const s64 lcn,
+		const s64 count, const void *b)
+{
+	s64 bw;
+
+	if (!vol || lcn < 0 || count < 0) {
+		errno = EINVAL;
+		return -1;
+	}
+	if (vol->nr_clusters < lcn + count) {
+		errno = ESPIPE;
+		ntfs_log_perror("Trying to write outside of volume "
+				"(%lld < %lld)", vol->nr_clusters, lcn + count);
+		return -1;
+	}
+	if (!NVolReadOnly(vol))
+		bw = ntfs_pwrite(vol->dev, lcn << vol->cluster_size_bits,
+				count << vol->cluster_size_bits, b);
+	else
+		bw = count << vol->cluster_size_bits;
+	if (bw < 0) {
+		ntfs_log_perror("Error writing cluster(s)");
+		return bw;
+	}
+	return bw >> vol->cluster_size_bits;
+}
+
+/**
+ * ntfs_device_offset_valid - test if a device offset is valid
+ * @dev:	open device
+ * @ofs:	offset to test for validity
+ *
+ * Test if the offset @ofs is an existing location on the device described
+ * by the open device structure @dev.
+ *
+ * Return 0 if it is valid and -1 if it is not valid.
+ */
+static int ntfs_device_offset_valid(struct ntfs_device *dev, s64 ofs)
+{
+	char ch;
+
+	if (dev->d_ops->seek(dev, ofs, SEEK_SET) >= 0 &&
+			dev->d_ops->read(dev, &ch, 1) == 1)
+		return 0;
+	return -1;
+}
+
+/**
+ * ntfs_device_size_get - return the size of a device in blocks
+ * @dev:	open device
+ * @block_size:	block size in bytes in which to return the result
+ *
+ * Return the number of @block_size sized blocks in the device described by the
+ * open device @dev.
+ *
+ * Adapted from e2fsutils-1.19, Copyright (C) 1995 Theodore Ts'o.
+ *
+ * On error return -1 with errno set to the error code.
+ */
+s64 ntfs_device_size_get(struct ntfs_device *dev, int block_size)
+{
+	s64 high, low;
+
+	if (!dev || block_size <= 0 || (block_size - 1) & block_size) {
+		errno = EINVAL;
+		return -1;
+	}
+#ifdef BLKGETSIZE64
+	{	u64 size;
+
+		if (dev->d_ops->ioctl(dev, BLKGETSIZE64, &size) >= 0) {
+			ntfs_log_debug("BLKGETSIZE64 nr bytes = %llu (0x%llx)\n",
+					(unsigned long long)size,
+					(unsigned long long)size);
+			return (s64)size / block_size;
+		}
+	}
+#endif
+#ifdef BLKGETSIZE
+	{	unsigned long size;
+
+		if (dev->d_ops->ioctl(dev, BLKGETSIZE, &size) >= 0) {
+			ntfs_log_debug("BLKGETSIZE nr 512 byte blocks = %lu (0x%lx)\n",
+					size, size);
+			return (s64)size * 512 / block_size;
+		}
+	}
+#endif
+#ifdef FDGETPRM
+	{       struct floppy_struct this_floppy;
+
+		if (dev->d_ops->ioctl(dev, FDGETPRM, &this_floppy) >= 0) {
+			ntfs_log_debug("FDGETPRM nr 512 byte blocks = %lu (0x%lx)\n",
+					(unsigned long)this_floppy.size,
+					(unsigned long)this_floppy.size);
+			return (s64)this_floppy.size * 512 / block_size;
+		}
+	}
+#endif
+	/*
+	 * We couldn't figure it out by using a specialized ioctl,
+	 * so do binary search to find the size of the device.
+	 */
+	low = 0LL;
+	for (high = 1024LL; !ntfs_device_offset_valid(dev, high); high <<= 1)
+		low = high;
+	while (low < high - 1LL) {
+		const s64 mid = (low + high) / 2;
+
+		if (!ntfs_device_offset_valid(dev, mid))
+			low = mid;
+		else
+			high = mid;
+	}
+	dev->d_ops->seek(dev, 0LL, SEEK_SET);
+	return (low + 1LL) / block_size;
+}
+
+/**
+ * ntfs_device_partition_start_sector_get - get starting sector of a partition
+ * @dev:	open device
+ *
+ * On success, return the starting sector of the partition @dev in the parent
+ * block device of @dev.  On error return -1 with errno set to the error code.
+ *
+ * The following error codes are defined:
+ *	EINVAL		Input parameter error
+ *	EOPNOTSUPP	System does not support HDIO_GETGEO ioctl
+ *	ENOTTY		@dev is a file or a device not supporting HDIO_GETGEO
+ */
+s64 ntfs_device_partition_start_sector_get(struct ntfs_device *dev)
+{
+	if (!dev) {
+		errno = EINVAL;
+		return -1;
+	}
+#ifdef HDIO_GETGEO
+	{	struct hd_geometry geo;
+
+		if (!dev->d_ops->ioctl(dev, HDIO_GETGEO, &geo)) {
+			ntfs_log_debug("HDIO_GETGEO start_sect = %lu (0x%lx)\n",
+					geo.start, geo.start);
+			return geo.start;
+		}
+	}
+#else
+	errno = EOPNOTSUPP;
+#endif
+	return -1;
+}
+
+/**
+ * ntfs_device_heads_get - get number of heads of device
+ * @dev:		open device
+ *
+ * On success, return the number of heads on the device @dev.  On error return
+ * -1 with errno set to the error code.
+ *
+ * The following error codes are defined:
+ *	EINVAL		Input parameter error
+ *	EOPNOTSUPP	System does not support HDIO_GETGEO ioctl
+ *	ENOTTY		@dev is a file or a device not supporting HDIO_GETGEO
+ */
+int ntfs_device_heads_get(struct ntfs_device *dev)
+{
+	if (!dev) {
+		errno = EINVAL;
+		return -1;
+	}
+#ifdef HDIO_GETGEO
+	{	struct hd_geometry geo;
+
+		if (!dev->d_ops->ioctl(dev, HDIO_GETGEO, &geo)) {
+			ntfs_log_debug("HDIO_GETGEO heads = %u (0x%x)\n",
+					(unsigned)geo.heads,
+					(unsigned)geo.heads);
+			return geo.heads;
+		}
+	}
+#else
+	errno = EOPNOTSUPP;
+#endif
+	return -1;
+}
+
+/**
+ * ntfs_device_sectors_per_track_get - get number of sectors per track of device
+ * @dev:		open device
+ *
+ * On success, return the number of sectors per track on the device @dev.  On
+ * error return -1 with errno set to the error code.
+ *
+ * The following error codes are defined:
+ *	EINVAL		Input parameter error
+ *	EOPNOTSUPP	System does not support HDIO_GETGEO ioctl
+ *	ENOTTY		@dev is a file or a device not supporting HDIO_GETGEO
+ */
+int ntfs_device_sectors_per_track_get(struct ntfs_device *dev)
+{
+	if (!dev) {
+		errno = EINVAL;
+		return -1;
+	}
+#ifdef HDIO_GETGEO
+	{	struct hd_geometry geo;
+
+		if (!dev->d_ops->ioctl(dev, HDIO_GETGEO, &geo)) {
+			ntfs_log_debug("HDIO_GETGEO sectors_per_track = %u (0x%x)\n",
+					(unsigned)geo.sectors,
+					(unsigned)geo.sectors);
+			return geo.sectors;
+		}
+	}
+#else
+	errno = EOPNOTSUPP;
+#endif
+	return -1;
+}
+
+/**
+ * ntfs_device_sector_size_get - get sector size of a device
+ * @dev:	open device
+ *
+ * On success, return the sector size in bytes of the device @dev.
+ * On error return -1 with errno set to the error code.
+ *
+ * The following error codes are defined:
+ *	EINVAL		Input parameter error
+ *	EOPNOTSUPP	System does not support BLKSSZGET ioctl
+ *	ENOTTY		@dev is a file or a device not supporting BLKSSZGET
+ */
+int ntfs_device_sector_size_get(struct ntfs_device *dev)
+{
+	if (!dev) {
+		errno = EINVAL;
+		return -1;
+	}
+#ifdef BLKSSZGET
+	{
+		int sect_size = 0;
+
+		if (!dev->d_ops->ioctl(dev, BLKSSZGET, &sect_size)) {
+			ntfs_log_debug("BLKSSZGET sector size = %d bytes\n",
+					sect_size);
+			return sect_size;
+		}
+	}
+#else
+	errno = EOPNOTSUPP;
+#endif
+	return -1;
+}
+
+/**
+ * ntfs_device_block_size_set - set block size of a device
+ * @dev:	open device
+ * @block_size: block size to set @dev to
+ *
+ * On success, return 0.
+ * On error return -1 with errno set to the error code.
+ *
+ * The following error codes are defined:
+ *	EINVAL		Input parameter error
+ *	EOPNOTSUPP	System does not support BLKBSZSET ioctl
+ *	ENOTTY		@dev is a file or a device not supporting BLKBSZSET
+ */
+int ntfs_device_block_size_set(struct ntfs_device *dev,
+		int block_size __attribute__((unused)))
+{
+	if (!dev) {
+		errno = EINVAL;
+		return -1;
+	}
+#ifdef BLKBSZSET
+	{
+		size_t s_block_size = block_size;
+		if (!dev->d_ops->ioctl(dev, BLKBSZSET, &s_block_size)) {
+			ntfs_log_debug("Used BLKBSZSET to set block size to "
+					"%d bytes.\n", block_size);
+			return 0;
+		}
+		/* If not a block device, pretend it was successful. */
+		if (!NDevBlock(dev))
+			return 0;
+	}
+#else
+	/* If not a block device, pretend it was successful. */
+	if (!NDevBlock(dev))
+		return 0;
+	errno = EOPNOTSUPP;
+#endif
+	return -1;
+}

libntfs-3g/device_io.c

@@ -0,0 +1,38 @@
+/*
+ * device_io.c - Default device io operations. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2003 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "config.h"
+
+#ifndef NO_NTFS_DEVICE_DEFAULT_IO_OPS
+
+#ifndef __CYGWIN32__
+
+/* Not on Cygwin; use standard Unix style low level device operations. */
+#include "unix_io.c"
+
+#else /* __CYGWIN32__ */
+
+/* On Cygwin; use Win32 low level device operations. */
+#include "win32_io.c"
+
+#endif /* __CYGWIN32__ */
+
+#endif /* NO_NTFS_DEVICE_DEFAULT_IO_OPS */

libntfs-3g/lcnalloc.c

@@ -0,0 +1,858 @@
+/**
+ * lcnalloc.c - Cluster (de)allocation code. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2002-2004 Anton Altaparmakov
+ * Copyright (c) 2004-2006 Szabolcs Szakacsits
+ * Copyright (c) 2004 Yura Pakhuchiy
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STDIO_H
+#include <stdio.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#include "types.h"
+#include "attrib.h"
+#include "bitmap.h"
+#include "debug.h"
+#include "runlist.h"
+#include "volume.h"
+#include "lcnalloc.h"
+#include "logging.h"
+#include "misc.h"
+
+/**
+ * ntfs_cluster_alloc - allocate clusters on an ntfs volume
+ * @vol:	mounted ntfs volume on which to allocate the clusters
+ * @start_vcn:	vcn to use for the first allocated cluster
+ * @count:	number of clusters to allocate
+ * @start_lcn:	starting lcn at which to allocate the clusters (or -1 if none)
+ * @zone:	zone from which to allocate the clusters
+ *
+ * Allocate @count clusters preferably starting at cluster @start_lcn or at the
+ * current allocator position if @start_lcn is -1, on the mounted ntfs volume
+ * @vol. @zone is either DATA_ZONE for allocation of normal clusters and
+ * MFT_ZONE for allocation of clusters for the master file table, i.e. the
+ * $MFT/$DATA attribute.
+ *
+ * On success return a runlist describing the allocated cluster(s).
+ *
+ * On error return NULL with errno set to the error code.
+ *
+ * Notes on the allocation algorithm
+ * =================================
+ *
+ * There are two data zones. First is the area between the end of the mft zone
+ * and the end of the volume, and second is the area between the start of the
+ * volume and the start of the mft zone. On unmodified/standard NTFS 1.x
+ * volumes, the second data zone doesn't exist due to the mft zone being
+ * expanded to cover the start of the volume in order to reserve space for the
+ * mft bitmap attribute.
+ *
+ * This is not the prettiest function but the complexity stems from the need of
+ * implementing the mft vs data zoned approach and from the fact that we have
+ * access to the lcn bitmap in portions of up to 8192 bytes at a time, so we
+ * need to cope with crossing over boundaries of two buffers. Further, the fact
+ * that the allocator allows for caller supplied hints as to the location of
+ * where allocation should begin and the fact that the allocator keeps track of
+ * where in the data zones the next natural allocation should occur, contribute
+ * to the complexity of the function. But it should all be worthwhile, because
+ * this allocator should: 1) be a full implementation of the MFT zone approach
+ * used by Windows, 2) cause reduction in fragmentation as much as possible,
+ * and 3) be speedy in allocations (the code is not optimized for speed, but
+ * the algorithm is, so further speed improvements are probably possible).
+ *
+ * FIXME: We should be monitoring cluster allocation and increment the MFT zone
+ * size dynamically but this is something for the future. We will just cause
+ * heavier fragmentation by not doing it and I am not even sure Windows would
+ * grow the MFT zone dynamically, so it might even be correct not to do this.
+ * The overhead in doing dynamic MFT zone expansion would be very large and
+ * unlikely worth the effort. (AIA)
+ *
+ * TODO: I have added in double the required zone position pointer wrap around
+ * logic which can be optimized to having only one of the two logic sets.
+ * However, having the double logic will work fine, but if we have only one of
+ * the sets and we get it wrong somewhere, then we get into trouble, so
+ * removing the duplicate logic requires _very_ careful consideration of _all_
+ * possible code paths. So at least for now, I am leaving the double logic -
+ * better safe than sorry... (AIA)
+ */
+runlist *ntfs_cluster_alloc(ntfs_volume *vol, VCN start_vcn, s64 count,
+		LCN start_lcn, const NTFS_CLUSTER_ALLOCATION_ZONES zone)
+{
+	LCN zone_start, zone_end, bmp_pos, bmp_initial_pos, last_read_pos, lcn;
+	LCN prev_lcn = 0, prev_run_len = 0, mft_zone_size;
+	s64 clusters, br;
+	runlist *rl = NULL, *trl;
+	u8 *buf, *byte;
+	int err = 0, rlpos, rlsize, buf_size;
+	u8 pass, done_zones, search_zone, need_writeback, bit;
+
+	ntfs_log_trace("Entering with count = 0x%llx, start_lcn = 0x%llx, zone = "
+			"%s_ZONE.\n", (long long)count, (long long)start_lcn,
+			zone == MFT_ZONE ? "MFT" : "DATA");
+	if (!vol || count < 0 || start_lcn < -1 || !vol->lcnbmp_na ||
+			(s8)zone < FIRST_ZONE || zone > LAST_ZONE) {
+		ntfs_log_trace("Invalid arguments!\n");
+		errno = EINVAL;
+		return NULL;
+	}
+
+	/* Return empty runlist if @count == 0 */
+	if (!count) {
+		rl = ntfs_malloc(0x1000);
+		if (!rl)
+			return NULL;
+		rl[0].vcn = start_vcn;
+		rl[0].lcn = LCN_RL_NOT_MAPPED;
+		rl[0].length = 0;
+		return rl;
+	}
+
+	/* Allocate memory. */
+	buf = ntfs_malloc(8192);
+	if (!buf)
+		return NULL;
+	/*
+	 * If no specific @start_lcn was requested, use the current data zone
+	 * position, otherwise use the requested @start_lcn but make sure it
+	 * lies outside the mft zone. Also set done_zones to 0 (no zones done)
+	 * and pass depending on whether we are starting inside a zone (1) or
+	 * at the beginning of a zone (2). If requesting from the MFT_ZONE,
+	 * we either start at the current position within the mft zone or at
+	 * the specified position. If the latter is out of bounds then we start
+	 * at the beginning of the MFT_ZONE.
+	 */
+	done_zones = 0;
+	pass = 1;
+	/*
+	 * zone_start and zone_end are the current search range. search_zone
+	 * is 1 for mft zone, 2 for data zone 1 (end of mft zone till end of
+	 * volume) and 4 for data zone 2 (start of volume till start of mft
+	 * zone).
+	 */
+	zone_start = start_lcn;
+	if (zone_start < 0) {
+		if (zone == DATA_ZONE)
+			zone_start = vol->data1_zone_pos;
+		else
+			zone_start = vol->mft_zone_pos;
+		if (!zone_start) {
+			/*
+			 * Zone starts at beginning of volume which means a
+			 * single pass is sufficient.
+			 */
+			pass = 2;
+		}
+	} else if (zone == DATA_ZONE && zone_start >= vol->mft_zone_start &&
+			zone_start < vol->mft_zone_end) {
+		zone_start = vol->mft_zone_end;
+		/*
+		 * Starting at beginning of data1_zone which means a single
+		 * pass in this zone is sufficient.
+		 */
+		pass = 2;
+	} else if (zone == MFT_ZONE && (zone_start < vol->mft_zone_start ||
+			zone_start >= vol->mft_zone_end)) {
+		zone_start = vol->mft_lcn;
+		if (!vol->mft_zone_end)
+			zone_start = 0;
+		/*
+		 * Starting at beginning of volume which means a single pass
+		 * is sufficient.
+		 */
+		pass = 2;
+	}
+	if (zone == MFT_ZONE) {
+		zone_end = vol->mft_zone_end;
+		search_zone = 1;
+	} else /* if (zone == DATA_ZONE) */ {
+		/* Skip searching the mft zone. */
+		done_zones |= 1;
+		if (zone_start >= vol->mft_zone_end) {
+			zone_end = vol->nr_clusters;
+			search_zone = 2;
+		} else {
+			zone_end = vol->mft_zone_start;
+			search_zone = 4;
+		}
+	}
+	/*
+	 * bmp_pos is the current bit position inside the bitmap. We use
+	 * bmp_initial_pos to determine whether or not to do a zone switch.
+	 */
+	bmp_pos = bmp_initial_pos = zone_start;
+
+	/* Loop until all clusters are allocated, i.e. clusters == 0. */
+	clusters = count;
+	rlpos = rlsize = 0;
+	while (1) {
+		ntfs_log_trace("Start of outer while loop: done_zones = 0x%x, "
+				"search_zone = %i, pass = %i, zone_start = "
+				"0x%llx, zone_end = 0x%llx, bmp_initial_pos = "
+				"0x%llx, bmp_pos = 0x%llx, rlpos = %i, rlsize = "
+				"%i.\n", done_zones, search_zone, pass,
+				(long long)zone_start, (long long)zone_end,
+				(long long)bmp_initial_pos, (long long)bmp_pos,
+				rlpos, rlsize);
+		/* Loop until we run out of free clusters. */
+		last_read_pos = bmp_pos >> 3;
+		ntfs_log_trace("last_read_pos = 0x%llx.\n", (long long)last_read_pos);
+		br = ntfs_attr_pread(vol->lcnbmp_na, last_read_pos, 8192, buf);
+		if (br <= 0) {
+			if (!br) {
+				/* Reached end of attribute. */
+				ntfs_log_trace("End of attribute reached. Skipping "
+						"to zone_pass_done.\n");
+				goto zone_pass_done;
+			}
+			err = errno;
+			ntfs_log_trace("ntfs_attr_pread() failed. Aborting.\n");
+			goto err_ret;
+		}
+		/*
+		 * We might have read less than 8192 bytes if we are close to
+		 * the end of the attribute.
+		 */
+		buf_size = (int)br << 3;
+		lcn = bmp_pos & 7;
+		bmp_pos &= ~7;
+		need_writeback = 0;
+		ntfs_log_trace("Before inner while loop: buf_size = %i, lcn = "
+				"0x%llx, bmp_pos = 0x%llx, need_writeback = %i.\n",
+				buf_size, (long long)lcn, (long long)bmp_pos,
+				need_writeback);
+		while (lcn < buf_size && lcn + bmp_pos < zone_end) {
+			byte = buf + (lcn >> 3);
+			ntfs_log_trace("In inner while loop: buf_size = %i, lcn = "
+					"0x%llx, bmp_pos = 0x%llx, "
+					"need_writeback = %i, byte ofs = 0x%x, "
+					"*byte = 0x%x.\n", buf_size,
+					(long long)lcn, (long long)bmp_pos,
+					need_writeback, (unsigned int)(lcn >> 3),
+					(unsigned int)*byte);
+			/* Skip full bytes. */
+			if (*byte == 0xff) {
+				lcn = (lcn + 8) & ~7;
+				ntfs_log_trace("continuing while loop 1.\n");
+				continue;
+			}
+			bit = 1 << (lcn & 7);
+			ntfs_log_trace("bit = %i.\n", bit);
+			/* If the bit is already set, go onto the next one. */
+			if (*byte & bit) {
+				lcn++;
+				ntfs_log_trace("continuing while loop 2.\n");
+				continue;
+			}
+			/* Reallocate memory if necessary. */
+			if ((rlpos + 2) * (int)sizeof(runlist) >= rlsize) {
+				ntfs_log_trace("Reallocating space.\n");
+				if (!rl)
+					ntfs_log_trace("First free bit is at LCN = "
+						"0x%llx.\n", (long long)(lcn + bmp_pos));
+				rlsize += 4096;
+				trl = (runlist*)realloc(rl, rlsize);
+				if (!trl) {
+					err = ENOMEM;
+					ntfs_log_trace("Failed to allocate memory, "
+							"going to wb_err_ret.\n");
+					goto wb_err_ret;
+				}
+				rl = trl;
+				ntfs_log_trace("Reallocated memory, rlsize = "
+						"0x%x.\n", rlsize);
+			}
+			/* Allocate the bitmap bit. */
+			*byte |= bit;
+			/* We need to write this bitmap buffer back to disk! */
+			need_writeback = 1;
+			ntfs_log_trace("*byte = 0x%x, need_writeback is set.\n",
+					(unsigned int)*byte);
+			/*
+			 * Coalesce with previous run if adjacent LCNs.
+			 * Otherwise, append a new run.
+			 */
+			ntfs_log_trace("Adding run (lcn 0x%llx, len 0x%llx), "
+					"prev_lcn = 0x%llx, lcn = 0x%llx, "
+					"bmp_pos = 0x%llx, prev_run_len = "
+					"0x%llx, rlpos = %i.\n",
+					(long long)(lcn + bmp_pos), 1LL,
+					(long long)prev_lcn, (long long)lcn,
+					(long long)bmp_pos,
+					(long long)prev_run_len, rlpos);
+			if (prev_lcn == lcn + bmp_pos - prev_run_len && rlpos) {
+				ntfs_log_trace("Coalescing to run (lcn 0x%llx, len "
+						"0x%llx).\n",
+						(long long)rl[rlpos - 1].lcn,
+						(long long) rl[rlpos - 1].length);
+				rl[rlpos - 1].length = ++prev_run_len;
+				ntfs_log_trace("Run now (lcn 0x%llx, len 0x%llx), "
+						"prev_run_len = 0x%llx.\n",
+						(long long)rl[rlpos - 1].lcn,
+						(long long)rl[rlpos - 1].length,
+						(long long)prev_run_len);
+			} else {
+				if (rlpos) {
+					ntfs_log_trace("Adding new run, (previous "
+						"run lcn 0x%llx, len 0x%llx).\n",
+						(long long) rl[rlpos - 1].lcn,
+						(long long) rl[rlpos - 1].length);
+					rl[rlpos].vcn = rl[rlpos - 1].vcn +
+							prev_run_len;
+				} else {
+					ntfs_log_trace("Adding new run, is first run.\n");
+					rl[rlpos].vcn = start_vcn;
+				}
+				rl[rlpos].lcn = prev_lcn = lcn + bmp_pos;
+				rl[rlpos].length = prev_run_len = 1;
+				rlpos++;
+			}
+			/* Done? */
+			if (!--clusters) {
+				LCN tc;
+				/*
+				 * Update the current zone position. Positions
+				 * of already scanned zones have been updated
+				 * during the respective zone switches.
+				 */
+				tc = lcn + bmp_pos + 1;
+				ntfs_log_trace("Done. Updating current zone "
+					"position, tc = 0x%llx, search_zone = %i.\n",
+					(long long)tc, search_zone);
+				switch (search_zone) {
+				case 1:
+					ntfs_log_trace("Before checks, vol->mft_zone_pos = 0x%llx.\n",
+							(long long) vol->mft_zone_pos);
+					if (tc >= vol->mft_zone_end) {
+						vol->mft_zone_pos =
+								vol->mft_lcn;
+						if (!vol->mft_zone_end)
+							vol->mft_zone_pos = 0;
+					} else if ((bmp_initial_pos >=
+							vol->mft_zone_pos ||
+							tc > vol->mft_zone_pos)
+							&& tc >= vol->mft_lcn)
+						vol->mft_zone_pos = tc;
+					ntfs_log_trace("After checks, vol->mft_zone_pos = 0x%llx.\n",
+							(long long) vol->mft_zone_pos);
+					break;
+				case 2:
+					ntfs_log_trace("Before checks, vol->data1_zone_pos = 0x%llx.\n",
+							(long long) vol->data1_zone_pos);
+					if (tc >= vol->nr_clusters)
+						vol->data1_zone_pos =
+							     vol->mft_zone_end;
+					else if ((bmp_initial_pos >=
+						    vol->data1_zone_pos ||
+						    tc > vol->data1_zone_pos)
+						    && tc >= vol->mft_zone_end)
+						vol->data1_zone_pos = tc;
+					ntfs_log_trace("After checks, vol->data1_zone_pos = 0x%llx.\n",
+							(long long) vol->data1_zone_pos);
+					break;
+				case 4:
+					ntfs_log_trace("Before checks, vol->data2_zone_pos = 0x%llx.\n",
+							(long long) vol->data2_zone_pos);
+					if (tc >= vol->mft_zone_start)
+						vol->data2_zone_pos = 0;
+					else if (bmp_initial_pos >=
+						      vol->data2_zone_pos ||
+						      tc > vol->data2_zone_pos)
+						vol->data2_zone_pos = tc;
+					ntfs_log_trace("After checks, vol->data2_zone_pos = 0x%llx.\n",
+							(long long) vol->data2_zone_pos);
+					break;
+				default:
+					free(rl);
+					free(buf);
+					NTFS_BUG("switch (search_zone) 1");
+					return NULL;
+				}
+				ntfs_log_trace("Going to done_ret.\n");
+				goto done_ret;
+			}
+			lcn++;
+		}
+		bmp_pos += buf_size;
+		ntfs_log_trace("After inner while loop: buf_size = 0x%x, lcn = "
+				"0x%llx, bmp_pos = 0x%llx, need_writeback = %i.\n",
+				buf_size, (long long)lcn,
+				(long long)bmp_pos, need_writeback);
+		if (need_writeback) {
+			s64 bw;
+			ntfs_log_trace("Writing back.\n");
+			need_writeback = 0;
+			bw = ntfs_attr_pwrite(vol->lcnbmp_na, last_read_pos,
+					br, buf);
+			if (bw != br) {
+				if (bw == -1)
+					err = errno;
+				else
+					err = EIO;
+				ntfs_log_trace("Bitmap writeback failed in read next "
+					"buffer code path with error code %i.\n", err);
+				goto err_ret;
+			}
+		}
+		if (bmp_pos < zone_end) {
+			ntfs_log_trace("Continuing outer while loop, bmp_pos = "
+					"0x%llx, zone_end = 0x%llx.\n",
+					(long long)bmp_pos,
+					(long long)zone_end);
+			continue;
+		}
+zone_pass_done:	/* Finished with the current zone pass. */
+		ntfs_log_trace("At zone_pass_done, pass = %i.\n", pass);
+		if (pass == 1) {
+			/*
+			 * Now do pass 2, scanning the first part of the zone
+			 * we omitted in pass 1.
+			 */
+			pass = 2;
+			zone_end = zone_start;
+			switch (search_zone) {
+			case 1: /* mft_zone */
+				zone_start = vol->mft_zone_start;
+				break;
+			case 2: /* data1_zone */
+				zone_start = vol->mft_zone_end;
+				break;
+			case 4: /* data2_zone */
+				zone_start = 0;
+				break;
+			default:
+				NTFS_BUG("switch (search_zone) 2");
+			}
+			/* Sanity check. */
+			if (zone_end < zone_start)
+				zone_end = zone_start;
+			bmp_pos = zone_start;
+			ntfs_log_trace("Continuing outer while loop, pass = 2, "
+					"zone_start = 0x%llx, zone_end = "
+					"0x%llx, bmp_pos = 0x%llx.\n",
+					zone_start, zone_end, bmp_pos);
+			continue;
+		} /* pass == 2 */
+done_zones_check:
+		ntfs_log_trace("At done_zones_check, search_zone = %i, done_zones "
+				"before = 0x%x, done_zones after = 0x%x.\n",
+				search_zone, done_zones, done_zones | search_zone);
+		done_zones |= search_zone;
+		if (done_zones < 7) {
+			ntfs_log_trace("Switching zone.\n");
+			/* Now switch to the next zone we haven't done yet. */
+			pass = 1;
+			switch (search_zone) {
+			case 1:
+				ntfs_log_trace("Switching from mft zone to data1 "
+						"zone.\n");
+				/* Update mft zone position. */
+				if (rlpos) {
+					LCN tc;
+					ntfs_log_trace("Before checks, vol->mft_zone_pos = 0x%llx.\n",
+							(long long) vol->mft_zone_pos);
+					tc = rl[rlpos - 1].lcn +
+							rl[rlpos - 1].length;
+					if (tc >= vol->mft_zone_end) {
+						vol->mft_zone_pos =
+								vol->mft_lcn;
+						if (!vol->mft_zone_end)
+							vol->mft_zone_pos = 0;
+					} else if ((bmp_initial_pos >=
+							vol->mft_zone_pos ||
+							tc > vol->mft_zone_pos)
+							&& tc >= vol->mft_lcn)
+						vol->mft_zone_pos = tc;
+					ntfs_log_trace("After checks, vol->mft_zone_pos = 0x%llx.\n",
+							(long long) vol->mft_zone_pos);
+				}
+				/* Switch from mft zone to data1 zone. */
+switch_to_data1_zone:		search_zone = 2;
+				zone_start = bmp_initial_pos =
+						vol->data1_zone_pos;
+				zone_end = vol->nr_clusters;
+				if (zone_start == vol->mft_zone_end)
+					pass = 2;
+				if (zone_start >= zone_end) {
+					vol->data1_zone_pos = zone_start =
+							vol->mft_zone_end;
+					pass = 2;
+				}
+				break;
+			case 2:
+				ntfs_log_trace("Switching from data1 zone to data2 "
+						"zone.\n");
+				/* Update data1 zone position. */
+				if (rlpos) {
+					LCN tc;
+					ntfs_log_trace("Before checks, vol->data1_zone_pos = 0x%llx.\n",
+							(long long) vol->data1_zone_pos);
+					tc = rl[rlpos - 1].lcn +
+							rl[rlpos - 1].length;
+					if (tc >= vol->nr_clusters)
+						vol->data1_zone_pos =
+							     vol->mft_zone_end;
+					else if ((bmp_initial_pos >=
+						    vol->data1_zone_pos ||
+						    tc > vol->data1_zone_pos)
+						    && tc >= vol->mft_zone_end)
+						vol->data1_zone_pos = tc;
+					ntfs_log_trace("After checks, vol->data1_zone_pos = 0x%llx.\n",
+							(long long) vol->data1_zone_pos);
+				}
+				/* Switch from data1 zone to data2 zone. */
+				search_zone = 4;
+				zone_start = bmp_initial_pos =
+						vol->data2_zone_pos;
+				zone_end = vol->mft_zone_start;
+				if (!zone_start)
+					pass = 2;
+				if (zone_start >= zone_end) {
+					vol->data2_zone_pos = zone_start =
+							bmp_initial_pos = 0;
+					pass = 2;
+				}
+				break;
+			case 4:
+				ntfs_log_debug("Switching from data2 zone to data1 "
+						"zone.\n");
+				/* Update data2 zone position. */
+				if (rlpos) {
+					LCN tc;
+					ntfs_log_trace("Before checks, vol->data2_zone_pos = 0x%llx.\n",
+							(long long) vol->data2_zone_pos);
+					tc = rl[rlpos - 1].lcn +
+							rl[rlpos - 1].length;
+					if (tc >= vol->mft_zone_start)
+						vol->data2_zone_pos = 0;
+					else if (bmp_initial_pos >=
+						      vol->data2_zone_pos ||
+						      tc > vol->data2_zone_pos)
+						vol->data2_zone_pos = tc;
+					ntfs_log_trace("After checks, vol->data2_zone_pos = 0x%llx.\n",
+							(long long) vol->data2_zone_pos);
+				}
+				/* Switch from data2 zone to data1 zone. */
+				goto switch_to_data1_zone; /* See above. */
+			default:
+				NTFS_BUG("switch (search_zone) 3");
+			}
+			ntfs_log_trace("After zone switch, search_zone = %i, pass = "
+					"%i, bmp_initial_pos = 0x%llx, "
+					"zone_start = 0x%llx, zone_end = "
+					"0x%llx.\n", search_zone, pass,
+					(long long)bmp_initial_pos,
+					(long long)zone_start,
+					(long long)zone_end);
+			bmp_pos = zone_start;
+			if (zone_start == zone_end) {
+				ntfs_log_trace("Empty zone, going to "
+						"done_zones_check.\n");
+				/* Empty zone. Don't bother searching it. */
+				goto done_zones_check;
+			}
+			ntfs_log_trace("Continuing outer while loop.\n");
+			continue;
+		} /* done_zones == 7 */
+		ntfs_log_trace("All zones are finished.\n");
+		/*
+		 * All zones are finished! If DATA_ZONE, shrink mft zone. If
+		 * MFT_ZONE, we have really run out of space.
+		 */
+		mft_zone_size = vol->mft_zone_end - vol->mft_zone_start;
+		ntfs_log_trace("vol->mft_zone_start = 0x%llx, vol->mft_zone_end = "
+				"0x%llx, mft_zone_size = 0x%llx.\n",
+				(long long)vol->mft_zone_start,
+				(long long)vol->mft_zone_end,
+				(long long)mft_zone_size);
+		if (zone == MFT_ZONE || mft_zone_size <= 0) {
+			ntfs_log_trace("No free clusters left, going to err_ret.\n");
+			/* Really no more space left on device. */
+			err = ENOSPC;
+			goto err_ret;
+		} /* zone == DATA_ZONE && mft_zone_size > 0 */
+		ntfs_log_trace("Shrinking mft zone.\n");
+		zone_end = vol->mft_zone_end;
+		mft_zone_size >>= 1;
+		if (mft_zone_size > 0)
+			vol->mft_zone_end = vol->mft_zone_start + mft_zone_size;
+		else /* mft zone and data2 zone no longer exist. */
+			vol->data2_zone_pos = vol->mft_zone_start =
+					vol->mft_zone_end = 0;
+		if (vol->mft_zone_pos >= vol->mft_zone_end) {
+			vol->mft_zone_pos = vol->mft_lcn;
+			if (!vol->mft_zone_end)
+				vol->mft_zone_pos = 0;
+		}
+		bmp_pos = zone_start = bmp_initial_pos =
+				vol->data1_zone_pos = vol->mft_zone_end;
+		search_zone = 2;
+		pass = 2;
+		done_zones &= ~2;
+		ntfs_log_trace("After shrinking mft zone, mft_zone_size = 0x%llx, "
+				"vol->mft_zone_start = 0x%llx, "
+				"vol->mft_zone_end = 0x%llx, vol->mft_zone_pos "
+				"= 0x%llx, search_zone = 2, pass = 2, "
+				"dones_zones = 0x%x, zone_start = 0x%llx, "
+				"zone_end = 0x%llx, vol->data1_zone_pos = "
+				"0x%llx, continuing outer while loop.\n",
+				(long long)mft_zone_size,
+				(long long)vol->mft_zone_start,
+				(long long)vol->mft_zone_end,
+				(long long)vol->mft_zone_pos,
+				done_zones,
+				(long long)zone_start,
+				(long long)zone_end,
+				(long long)vol->data1_zone_pos);
+	}
+	ntfs_log_debug("After outer while loop.\n");
+done_ret:
+	ntfs_log_debug("At done_ret.\n");
+	/* Add runlist terminator element. */
+	rl[rlpos].vcn = rl[rlpos - 1].vcn + rl[rlpos - 1].length;
+	rl[rlpos].lcn = LCN_RL_NOT_MAPPED;
+	rl[rlpos].length = 0;
+	if (need_writeback) {
+		s64 bw;
+		ntfs_log_trace("Writing back.\n");
+		need_writeback = 0;
+		bw = ntfs_attr_pwrite(vol->lcnbmp_na, last_read_pos, br, buf);
+		if (bw != br) {
+			if (bw < 0)
+				err = errno;
+			else
+				err = EIO;
+			ntfs_log_trace("Bitmap writeback failed in done code path "
+					"with error code %i.\n", err);
+			goto err_ret;
+		}
+	}
+done_err_ret:
+	ntfs_log_debug("At done_err_ret (follows done_ret).\n");
+	free(buf);
+	/* Done! */
+	if (!err)
+		return rl;
+	ntfs_log_trace("Failed to allocate clusters. Returning with error code "
+			"%i.\n", err);
+	errno = err;
+	return NULL;
+wb_err_ret:
+	ntfs_log_trace("At wb_err_ret.\n");
+	if (need_writeback) {
+		s64 bw;
+		ntfs_log_trace("Writing back.\n");
+		need_writeback = 0;
+		bw = ntfs_attr_pwrite(vol->lcnbmp_na, last_read_pos, br, buf);
+		if (bw != br) {
+			if (bw < 0)
+				err = errno;
+			else
+				err = EIO;
+			ntfs_log_trace("Bitmap writeback failed in error code path "
+					"with error code %i.\n", err);
+		}
+	}
+err_ret:
+	ntfs_log_trace("At err_ret.\n");
+	if (rl) {
+		if (err == ENOSPC) {
+			ntfs_log_trace("err = ENOSPC, first free lcn = 0x%llx, could "
+					"allocate up to = 0x%llx clusters.\n",
+					(long long)rl[0].lcn,
+					(long long)count - clusters);
+		}
+		/* Add runlist terminator element. */
+		rl[rlpos].vcn = rl[rlpos - 1].vcn + rl[rlpos - 1].length;
+		rl[rlpos].lcn = LCN_RL_NOT_MAPPED;
+		rl[rlpos].length = 0;
+		/* Deallocate all allocated clusters. */
+		ntfs_log_trace("Deallocating allocated clusters.\n");
+		ntfs_cluster_free_from_rl(vol, rl);
+		/* Free the runlist. */
+		free(rl);
+		rl = NULL;
+	} else {
+		if (err == ENOSPC) {
+			ntfs_log_trace("No space left at all, err = ENOSPC, first "
+					"free lcn = 0x%llx.\n",
+					(long long)vol->data1_zone_pos);
+		}
+	}
+	ntfs_log_trace("rl = NULL, going to done_err_ret.\n");
+	goto done_err_ret;
+}
+
+/**
+ * ntfs_cluster_free_from_rl - free clusters from runlist
+ * @vol:	mounted ntfs volume on which to free the clusters
+ * @rl:		runlist from which deallocate clusters
+ *
+ * On success return 0 and on error return -1 with errno set to the error code.
+ */
+int ntfs_cluster_free_from_rl(ntfs_volume *vol, runlist *rl)
+{
+	ntfs_log_trace("Entering.\n");
+
+	for (; rl->length; rl++) {
+
+		ntfs_log_trace("Dealloc lcn 0x%llx, len 0x%llx.\n",
+			       (long long)rl->lcn, (long long)rl->length);
+
+		if (rl->lcn >= 0 && ntfs_bitmap_clear_run(vol->lcnbmp_na,
+				rl->lcn, rl->length)) {
+			int eo = errno;
+			ntfs_log_trace("Eeek! Deallocation of clusters failed.\n");
+			errno = eo;
+			return -1;
+		}
+	}
+	return 0;
+}
+
+/**
+ * ntfs_cluster_free - free clusters on an ntfs volume
+ * @vol:	mounted ntfs volume on which to free the clusters
+ * @na:		attribute whose runlist describes the clusters to free
+ * @start_vcn:	vcn in @rl at which to start freeing clusters
+ * @count:	number of clusters to free or -1 for all clusters
+ *
+ * Free @count clusters starting at the cluster @start_vcn in the runlist
+ * described by the attribute @na from the mounted ntfs volume @vol.
+ *
+ * If @count is -1, all clusters from @start_vcn to the end of the runlist
+ * are deallocated.
+ *
+ * On success return the number of deallocated clusters (not counting sparse
+ * clusters) and on error return -1 with errno set to the error code.
+ */
+int ntfs_cluster_free(ntfs_volume *vol, ntfs_attr *na, VCN start_vcn, s64 count)
+{
+	runlist *rl;
+	s64 nr_freed, delta, to_free;
+
+	if (!vol || !vol->lcnbmp_na || !na || start_vcn < 0 ||
+			(count < 0 && count != -1)) {
+		ntfs_log_trace("Invalid arguments!\n");
+		errno = EINVAL;
+		return -1;
+	}
+	ntfs_log_trace("Entering for inode 0x%llx, attr 0x%x, count 0x%llx, "
+		       "vcn 0x%llx.\n", (unsigned long long)na->ni->mft_no,
+		       na->type, (long long)count, (long long)start_vcn);
+
+	rl = ntfs_attr_find_vcn(na, start_vcn);
+	if (!rl) {
+		if (errno == ENOENT)
+			return 0;
+		else
+			return -1;
+	}
+
+	if (rl->lcn < 0 && rl->lcn != LCN_HOLE) {
+		errno = EIO;
+		return -1;
+	}
+
+	/* Find the starting cluster inside the run that needs freeing. */
+	delta = start_vcn - rl->vcn;
+
+	/* The number of clusters in this run that need freeing. */
+	to_free = rl->length - delta;
+	if (count >= 0 && to_free > count)
+		to_free = count;
+
+	if (rl->lcn != LCN_HOLE) {
+		/* Do the actual freeing of the clusters in this run. */
+		if (ntfs_bitmap_clear_run(vol->lcnbmp_na, rl->lcn + delta,
+				to_free))
+			return -1;
+		/* We have freed @to_free real clusters. */
+		nr_freed = to_free;
+	} else {
+		/* No real clusters were freed. */
+		nr_freed = 0;
+	}
+
+	/* Go to the next run and adjust the number of clusters left to free. */
+	++rl;
+	if (count >= 0)
+		count -= to_free;
+
+	/*
+	 * Loop over the remaining runs, using @count as a capping value, and
+	 * free them.
+	 */
+	for (; rl->length && count != 0; ++rl) {
+		// FIXME: Need to try ntfs_attr_map_runlist() for attribute
+		//	  list support! (AIA)
+		if (rl->lcn < 0 && rl->lcn != LCN_HOLE) {
+			// FIXME: Eeek! We need rollback! (AIA)
+			ntfs_log_trace("Eeek! invalid lcn (= %lli).  Should attempt "
+					"to map runlist!  Leaving inconsistent "
+					"metadata!\n", (long long)rl->lcn);
+			errno = EIO;
+			return -1;
+		}
+
+		/* The number of clusters in this run that need freeing. */
+		to_free = rl->length;
+		if (count >= 0 && to_free > count)
+			to_free = count;
+
+		if (rl->lcn != LCN_HOLE) {
+			/* Do the actual freeing of the clusters in the run. */
+			if (ntfs_bitmap_clear_run(vol->lcnbmp_na, rl->lcn,
+					to_free)) {
+				int eo = errno;
+
+				// FIXME: Eeek! We need rollback! (AIA)
+				ntfs_log_trace("Eeek!  bitmap clear run failed.  "
+						"Leaving inconsistent metadata!\n");
+				errno = eo;
+				return -1;
+			}
+			/* We have freed @to_free real clusters. */
+			nr_freed += to_free;
+		}
+
+		if (count >= 0)
+			count -= to_free;
+	}
+
+	if (count != -1 && count != 0) {
+		// FIXME: Eeek! BUG()
+		ntfs_log_trace("Eeek!  count still not zero (= %lli).  Leaving "
+				"inconsistent metadata!\n", (long long)count);
+		errno = EIO;
+		return -1;
+	}
+
+	/* Done. Return the number of actual clusters that were freed. */
+	return nr_freed;
+}

libntfs-3g/logfile.c

@@ -0,0 +1,762 @@
+/**
+ * logfile.c - NTFS journal handling. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2002-2005 Anton Altaparmakov
+ * Copyright (c) 2005 Yura Pakhuchiy
+ * Copyright (c) 2005-2006 Szabolcs Szakacsits
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#include "attrib.h"
+#include "debug.h"
+#include "logfile.h"
+#include "volume.h"
+#include "mst.h"
+#include "logging.h"
+#include "misc.h"
+
+/**
+ * ntfs_check_restart_page_header - check the page header for consistency
+ * @rp:		restart page header to check
+ * @pos:	position in logfile at which the restart page header resides
+ *
+ * Check the restart page header @rp for consistency and return TRUE if it is
+ * consistent and FALSE otherwise.
+ *
+ * This function only needs NTFS_BLOCK_SIZE bytes in @rp, i.e. it does not
+ * require the full restart page.
+ */
+static BOOL ntfs_check_restart_page_header(RESTART_PAGE_HEADER *rp, s64 pos)
+{
+	u32 logfile_system_page_size, logfile_log_page_size;
+	u16 ra_ofs, usa_count, usa_ofs, usa_end = 0;
+	BOOL have_usa = TRUE;
+
+	ntfs_log_trace("Entering.\n");
+	/*
+	 * If the system or log page sizes are smaller than the ntfs block size
+	 * or either is not a power of 2 we cannot handle this log file.
+	 */
+	logfile_system_page_size = le32_to_cpu(rp->system_page_size);
+	logfile_log_page_size = le32_to_cpu(rp->log_page_size);
+	if (logfile_system_page_size < NTFS_BLOCK_SIZE ||
+			logfile_log_page_size < NTFS_BLOCK_SIZE ||
+			logfile_system_page_size &
+			(logfile_system_page_size - 1) ||
+			logfile_log_page_size & (logfile_log_page_size - 1)) {
+		ntfs_log_error("$LogFile uses unsupported page size.\n");
+		return FALSE;
+	}
+	/*
+	 * We must be either at !pos (1st restart page) or at pos = system page
+	 * size (2nd restart page).
+	 */
+	if (pos && pos != logfile_system_page_size) {
+		ntfs_log_error("Found restart area in incorrect "
+				"position in $LogFile.\n");
+		return FALSE;
+	}
+	/* We only know how to handle version 1.1. */
+	if (sle16_to_cpu(rp->major_ver) != 1 ||
+			sle16_to_cpu(rp->minor_ver) != 1) {
+		ntfs_log_error("$LogFile version %i.%i is not "
+				"supported.  (This driver supports version "
+				"1.1 only.)\n", (int)sle16_to_cpu(rp->major_ver),
+				(int)sle16_to_cpu(rp->minor_ver));
+		return FALSE;
+	}
+	/*
+	 * If chkdsk has been run the restart page may not be protected by an
+	 * update sequence array.
+	 */
+	if (ntfs_is_chkd_record(rp->magic) && !le16_to_cpu(rp->usa_count)) {
+		have_usa = FALSE;
+		goto skip_usa_checks;
+	}
+	/* Verify the size of the update sequence array. */
+	usa_count = 1 + (logfile_system_page_size >> NTFS_BLOCK_SIZE_BITS);
+	if (usa_count != le16_to_cpu(rp->usa_count)) {
+		ntfs_log_error("$LogFile restart page specifies "
+				"inconsistent update sequence array count.\n");
+		return FALSE;
+	}
+	/* Verify the position of the update sequence array. */
+	usa_ofs = le16_to_cpu(rp->usa_ofs);
+	usa_end = usa_ofs + usa_count * sizeof(u16);
+	if (usa_ofs < sizeof(RESTART_PAGE_HEADER) ||
+			usa_end > NTFS_BLOCK_SIZE - sizeof(u16)) {
+		ntfs_log_error("$LogFile restart page specifies "
+				"inconsistent update sequence array offset.\n");
+		return FALSE;
+	}
+skip_usa_checks:
+	/*
+	 * Verify the position of the restart area.  It must be:
+	 *	- aligned to 8-byte boundary,
+	 *	- after the update sequence array, and
+	 *	- within the system page size.
+	 */
+	ra_ofs = le16_to_cpu(rp->restart_area_offset);
+	if (ra_ofs & 7 || (have_usa ? ra_ofs < usa_end :
+			ra_ofs < sizeof(RESTART_PAGE_HEADER)) ||
+			ra_ofs > logfile_system_page_size) {
+		ntfs_log_error("$LogFile restart page specifies "
+				"inconsistent restart area offset.\n");
+		return FALSE;
+	}
+	/*
+	 * Only restart pages modified by chkdsk are allowed to have chkdsk_lsn
+	 * set.
+	 */
+	if (!ntfs_is_chkd_record(rp->magic) && sle64_to_cpu(rp->chkdsk_lsn)) {
+		ntfs_log_error("$LogFile restart page is not modified "
+				"by chkdsk but a chkdsk LSN is specified.\n");
+		return FALSE;
+	}
+	ntfs_log_trace("Done.\n");
+	return TRUE;
+}
+
+/**
+ * ntfs_check_restart_area - check the restart area for consistency
+ * @rp:		restart page whose restart area to check
+ *
+ * Check the restart area of the restart page @rp for consistency and return
+ * TRUE if it is consistent and FALSE otherwise.
+ *
+ * This function assumes that the restart page header has already been
+ * consistency checked.
+ *
+ * This function only needs NTFS_BLOCK_SIZE bytes in @rp, i.e. it does not
+ * require the full restart page.
+ */
+static BOOL ntfs_check_restart_area(RESTART_PAGE_HEADER *rp)
+{
+	u64 file_size;
+	RESTART_AREA *ra;
+	u16 ra_ofs, ra_len, ca_ofs;
+	u8 fs_bits;
+
+	ntfs_log_trace("Entering.\n");
+	ra_ofs = le16_to_cpu(rp->restart_area_offset);
+	ra = (RESTART_AREA*)((u8*)rp + ra_ofs);
+	/*
+	 * Everything before ra->file_size must be before the first word
+	 * protected by an update sequence number.  This ensures that it is
+	 * safe to access ra->client_array_offset.
+	 */
+	if (ra_ofs + offsetof(RESTART_AREA, file_size) >
+			NTFS_BLOCK_SIZE - sizeof(u16)) {
+		ntfs_log_error("$LogFile restart area specifies "
+				"inconsistent file offset.\n");
+		return FALSE;
+	}
+	/*
+	 * Now that we can access ra->client_array_offset, make sure everything
+	 * up to the log client array is before the first word protected by an
+	 * update sequence number.  This ensures we can access all of the
+	 * restart area elements safely.  Also, the client array offset must be
+	 * aligned to an 8-byte boundary.
+	 */
+	ca_ofs = le16_to_cpu(ra->client_array_offset);
+	if (((ca_ofs + 7) & ~7) != ca_ofs ||
+			ra_ofs + ca_ofs > (u16)(NTFS_BLOCK_SIZE -
+			sizeof(u16))) {
+		ntfs_log_error("$LogFile restart area specifies "
+				"inconsistent client array offset.\n");
+		return FALSE;
+	}
+	/*
+	 * The restart area must end within the system page size both when
+	 * calculated manually and as specified by ra->restart_area_length.
+	 * Also, the calculated length must not exceed the specified length.
+	 */
+	ra_len = ca_ofs + le16_to_cpu(ra->log_clients) *
+			sizeof(LOG_CLIENT_RECORD);
+	if ((u32)(ra_ofs + ra_len) > le32_to_cpu(rp->system_page_size) ||
+			(u32)(ra_ofs + le16_to_cpu(ra->restart_area_length)) >
+			le32_to_cpu(rp->system_page_size) ||
+			ra_len > le16_to_cpu(ra->restart_area_length)) {
+		ntfs_log_error("$LogFile restart area is out of bounds "
+				"of the system page size specified by the "
+				"restart page header and/or the specified "
+				"restart area length is inconsistent.\n");
+		return FALSE;
+	}
+	/*
+	 * The ra->client_free_list and ra->client_in_use_list must be either
+	 * LOGFILE_NO_CLIENT or less than ra->log_clients or they are
+	 * overflowing the client array.
+	 */
+	if ((ra->client_free_list != LOGFILE_NO_CLIENT &&
+			le16_to_cpu(ra->client_free_list) >=
+			le16_to_cpu(ra->log_clients)) ||
+			(ra->client_in_use_list != LOGFILE_NO_CLIENT &&
+			le16_to_cpu(ra->client_in_use_list) >=
+			le16_to_cpu(ra->log_clients))) {
+		ntfs_log_error("$LogFile restart area specifies "
+				"overflowing client free and/or in use lists.\n");
+		return FALSE;
+	}
+	/*
+	 * Check ra->seq_number_bits against ra->file_size for consistency.
+	 * We cannot just use ffs() because the file size is not a power of 2.
+	 */
+	file_size = (u64)sle64_to_cpu(ra->file_size);
+	fs_bits = 0;
+	while (file_size) {
+		file_size >>= 1;
+		fs_bits++;
+	}
+	if (le32_to_cpu(ra->seq_number_bits) != (u32)(67 - fs_bits)) {
+		ntfs_log_error("$LogFile restart area specifies "
+				"inconsistent sequence number bits.\n");
+		return FALSE;
+	}
+	/* The log record header length must be a multiple of 8. */
+	if (((le16_to_cpu(ra->log_record_header_length) + 7) & ~7) !=
+			le16_to_cpu(ra->log_record_header_length)) {
+		ntfs_log_error("$LogFile restart area specifies "
+				"inconsistent log record header length.\n");
+		return FALSE;
+	}
+	/* Ditto for the log page data offset. */
+	if (((le16_to_cpu(ra->log_page_data_offset) + 7) & ~7) !=
+			le16_to_cpu(ra->log_page_data_offset)) {
+		ntfs_log_error("$LogFile restart area specifies "
+				"inconsistent log page data offset.\n");
+		return FALSE;
+	}
+	ntfs_log_trace("Done.\n");
+	return TRUE;
+}
+
+/**
+ * ntfs_check_log_client_array - check the log client array for consistency
+ * @rp:		restart page whose log client array to check
+ *
+ * Check the log client array of the restart page @rp for consistency and
+ * return TRUE if it is consistent and FALSE otherwise.
+ *
+ * This function assumes that the restart page header and the restart area have
+ * already been consistency checked.
+ *
+ * Unlike ntfs_check_restart_page_header() and ntfs_check_restart_area(), this
+ * function needs @rp->system_page_size bytes in @rp, i.e. it requires the full
+ * restart page and the page must be multi sector transfer deprotected.
+ */
+static BOOL ntfs_check_log_client_array(RESTART_PAGE_HEADER *rp)
+{
+	RESTART_AREA *ra;
+	LOG_CLIENT_RECORD *ca, *cr;
+	u16 nr_clients, idx;
+	BOOL in_free_list, idx_is_first;
+
+	ntfs_log_trace("Entering.\n");
+	ra = (RESTART_AREA*)((u8*)rp + le16_to_cpu(rp->restart_area_offset));
+	ca = (LOG_CLIENT_RECORD*)((u8*)ra +
+			le16_to_cpu(ra->client_array_offset));
+	/*
+	 * Check the ra->client_free_list first and then check the
+	 * ra->client_in_use_list.  Check each of the log client records in
+	 * each of the lists and check that the array does not overflow the
+	 * ra->log_clients value.  Also keep track of the number of records
+	 * visited as there cannot be more than ra->log_clients records and
+	 * that way we detect eventual loops in within a list.
+	 */
+	nr_clients = le16_to_cpu(ra->log_clients);
+	idx = le16_to_cpu(ra->client_free_list);
+	in_free_list = TRUE;
+check_list:
+	for (idx_is_first = TRUE; idx != LOGFILE_NO_CLIENT_CPU; nr_clients--,
+			idx = le16_to_cpu(cr->next_client)) {
+		if (!nr_clients || idx >= le16_to_cpu(ra->log_clients))
+			goto err_out;
+		/* Set @cr to the current log client record. */
+		cr = ca + idx;
+		/* The first log client record must not have a prev_client. */
+		if (idx_is_first) {
+			if (cr->prev_client != LOGFILE_NO_CLIENT)
+				goto err_out;
+			idx_is_first = FALSE;
+		}
+	}
+	/* Switch to and check the in use list if we just did the free list. */
+	if (in_free_list) {
+		in_free_list = FALSE;
+		idx = le16_to_cpu(ra->client_in_use_list);
+		goto check_list;
+	}
+	ntfs_log_trace("Done.\n");
+	return TRUE;
+err_out:
+	ntfs_log_error("$LogFile log client array is corrupt.\n");
+	return FALSE;
+}
+
+/**
+ * ntfs_check_and_load_restart_page - check the restart page for consistency
+ * @log_na:	opened ntfs attribute for journal $LogFile
+ * @rp:		restart page to check
+ * @pos:	position in @log_na at which the restart page resides
+ * @wrp:       [OUT] copy of the multi sector transfer deprotected restart page
+ * @lsn:       [OUT] set to the current logfile lsn on success
+ *
+ * Check the restart page @rp for consistency and return 0 if it is consistent
+ * and errno otherwise.  The restart page may have been modified by chkdsk in
+ * which case its magic is CHKD instead of RSTR.
+ *
+ * This function only needs NTFS_BLOCK_SIZE bytes in @rp, i.e. it does not
+ * require the full restart page.
+ *
+ * If @wrp is not NULL, on success, *@wrp will point to a buffer containing a
+ * copy of the complete multi sector transfer deprotected page.  On failure,
+ * *@wrp is undefined.
+ *
+ * Similarly, if @lsn is not NULL, on success *@lsn will be set to the current
+ * logfile lsn according to this restart page.  On failure, *@lsn is undefined.
+ *
+ * The following error codes are defined:
+ *     EINVAL - The restart page is inconsistent.
+ *     ENOMEM - Not enough memory to load the restart page.
+ *     EIO    - Failed to reading from $LogFile.
+ */
+static int ntfs_check_and_load_restart_page(ntfs_attr *log_na,
+		RESTART_PAGE_HEADER *rp, s64 pos, RESTART_PAGE_HEADER **wrp,
+		LSN *lsn)
+{
+	RESTART_AREA *ra;
+	RESTART_PAGE_HEADER *trp;
+	int err;
+
+	ntfs_log_trace("Entering.\n");
+	/* Check the restart page header for consistency. */
+	if (!ntfs_check_restart_page_header(rp, pos)) {
+		/* Error output already done inside the function. */
+		return EINVAL;
+	}
+	/* Check the restart area for consistency. */
+	if (!ntfs_check_restart_area(rp)) {
+		/* Error output already done inside the function. */
+		return EINVAL;
+	}
+	ra = (RESTART_AREA*)((u8*)rp + le16_to_cpu(rp->restart_area_offset));
+	/*
+	 * Allocate a buffer to store the whole restart page so we can multi
+	 * sector transfer deprotect it.
+	 */
+	trp = ntfs_malloc(le32_to_cpu(rp->system_page_size));
+	if (!trp)
+		return errno;
+	/*
+	 * Read the whole of the restart page into the buffer.  If it fits
+	 * completely inside @rp, just copy it from there.  Otherwise read it
+	 * from disk.
+	 */
+	if (le32_to_cpu(rp->system_page_size) <= NTFS_BLOCK_SIZE)
+		memcpy(trp, rp, le32_to_cpu(rp->system_page_size));
+	else if (ntfs_attr_pread(log_na, pos,
+			le32_to_cpu(rp->system_page_size), trp) !=
+			le32_to_cpu(rp->system_page_size)) {
+		err = errno;
+		ntfs_log_error("Failed to read whole restart page into the "
+				"buffer.\n");
+		if (err != ENOMEM)
+			err = EIO;
+		goto err_out;
+	}
+	/*
+	 * Perform the multi sector transfer deprotection on the buffer if the
+	 * restart page is protected.
+	 */
+	if ((!ntfs_is_chkd_record(trp->magic) || le16_to_cpu(trp->usa_count))
+			&& ntfs_mst_post_read_fixup((NTFS_RECORD*)trp,
+			le32_to_cpu(rp->system_page_size))) {
+		/*
+		 * A multi sector tranfer error was detected.  We only need to
+		 * abort if the restart page contents exceed the multi sector
+		 * transfer fixup of the first sector.
+		 */
+		if (le16_to_cpu(rp->restart_area_offset) +
+				le16_to_cpu(ra->restart_area_length) >
+				NTFS_BLOCK_SIZE - (int)sizeof(u16)) {
+			ntfs_log_error("Multi sector transfer error "
+				   "detected in $LogFile restart page.\n");
+			err = EINVAL;
+			goto err_out;
+		}
+	}
+	/*
+	 * If the restart page is modified by chkdsk or there are no active
+	 * logfile clients, the logfile is consistent.  Otherwise, need to
+	 * check the log client records for consistency, too.
+	 */
+	err = 0;
+	if (ntfs_is_rstr_record(rp->magic) &&
+			ra->client_in_use_list != LOGFILE_NO_CLIENT) {
+		if (!ntfs_check_log_client_array(trp)) {
+			err = EINVAL;
+			goto err_out;
+		}
+	}
+	if (lsn) {
+		if (ntfs_is_rstr_record(rp->magic))
+			*lsn = sle64_to_cpu(ra->current_lsn);
+		else /* if (ntfs_is_chkd_record(rp->magic)) */
+			*lsn = sle64_to_cpu(rp->chkdsk_lsn);
+	}
+	ntfs_log_trace("Done.\n");
+	if (wrp)
+		*wrp = trp;
+	else {
+err_out:
+		free(trp);
+	}
+	return err;
+}
+
+/**
+ * ntfs_check_logfile - check in the journal if the volume is consistent
+ * @log_na:	ntfs attribute of loaded journal $LogFile to check
+ * @rp:         [OUT] on success this is a copy of the current restart page
+ *
+ * Check the $LogFile journal for consistency and return TRUE if it is
+ * consistent and FALSE if not.  On success, the current restart page is
+ * returned in *@rp.  Caller must call ntfs_free(*@rp) when finished with it.
+ *
+ * At present we only check the two restart pages and ignore the log record
+ * pages.
+ *
+ * Note that the MstProtected flag is not set on the $LogFile inode and hence
+ * when reading pages they are not deprotected.  This is because we do not know
+ * if the $LogFile was created on a system with a different page size to ours
+ * yet and mst deprotection would fail if our page size is smaller.
+ */
+BOOL ntfs_check_logfile(ntfs_attr *log_na, RESTART_PAGE_HEADER **rp)
+{
+	s64 size, pos;
+	LSN rstr1_lsn, rstr2_lsn;
+	ntfs_volume *vol = log_na->ni->vol;
+	u8 *kaddr = NULL;
+	RESTART_PAGE_HEADER *rstr1_ph = NULL;
+	RESTART_PAGE_HEADER *rstr2_ph = NULL;
+	int log_page_size, log_page_mask, err;
+	BOOL logfile_is_empty = TRUE;
+	u8 log_page_bits;
+
+	ntfs_log_trace("Entering.\n");
+	/* An empty $LogFile must have been clean before it got emptied. */
+	if (NVolLogFileEmpty(vol))
+		goto is_empty;
+	size = log_na->data_size;
+	/* Make sure the file doesn't exceed the maximum allowed size. */
+	if (size > (s64)MaxLogFileSize)
+		size = MaxLogFileSize;
+	log_page_size = DefaultLogPageSize;
+	log_page_mask = log_page_size - 1;
+	/*
+	 * Use generic_ffs() instead of ffs() to enable the compiler to
+	 * optimize log_page_size and log_page_bits into constants.
+	 */
+	log_page_bits = ffs(log_page_size) - 1;
+	size &= ~(log_page_size - 1);
+
+	/*
+	 * Ensure the log file is big enough to store at least the two restart
+	 * pages and the minimum number of log record pages.
+	 */
+	if (size < log_page_size * 2 || (size - log_page_size * 2) >>
+			log_page_bits < MinLogRecordPages) {
+		ntfs_log_error("$LogFile is too small.\n");
+		return FALSE;
+	}
+	/* Allocate memory for restart page. */
+	kaddr = ntfs_malloc(NTFS_BLOCK_SIZE);
+	if (!kaddr)
+		return FALSE;
+	/*
+	 * Read through the file looking for a restart page.  Since the restart
+	 * page header is at the beginning of a page we only need to search at
+	 * what could be the beginning of a page (for each page size) rather
+	 * than scanning the whole file byte by byte.  If all potential places
+	 * contain empty and uninitialized records, the log file can be assumed
+	 * to be empty.
+	 */
+	for (pos = 0; pos < size; pos <<= 1) {
+		/*
+		 * Read first NTFS_BLOCK_SIZE bytes of potential restart page.
+		 */
+		if (ntfs_attr_pread(log_na, pos, NTFS_BLOCK_SIZE, kaddr) !=
+				NTFS_BLOCK_SIZE) {
+			ntfs_log_error("Failed to read first NTFS_BLOCK_SIZE "
+					"bytes of potential restart page.\n");
+			goto err_out;
+		}
+
+		/*
+		 * A non-empty block means the logfile is not empty while an
+		 * empty block after a non-empty block has been encountered
+		 * means we are done.
+		 */
+		if (!ntfs_is_empty_recordp((le32*)kaddr))
+			logfile_is_empty = FALSE;
+		else if (!logfile_is_empty)
+			break;
+		/*
+		 * A log record page means there cannot be a restart page after
+		 * this so no need to continue searching.
+		 */
+		if (ntfs_is_rcrd_recordp((le32*)kaddr))
+			break;
+		/* If not a (modified by chkdsk) restart page, continue. */
+		if (!ntfs_is_rstr_recordp((le32*)kaddr) &&
+				!ntfs_is_chkd_recordp((le32*)kaddr)) {
+			if (!pos)
+				pos = NTFS_BLOCK_SIZE >> 1;
+			continue;
+		}
+		/*
+		 * Check the (modified by chkdsk) restart page for consistency
+		 * and get a copy of the complete multi sector transfer
+		 * deprotected restart page.
+		 */
+		err = ntfs_check_and_load_restart_page(log_na,
+				(RESTART_PAGE_HEADER*)kaddr, pos,
+				!rstr1_ph ? &rstr1_ph : &rstr2_ph,
+				!rstr1_ph ? &rstr1_lsn : &rstr2_lsn);
+		if (!err) {
+			/*
+			 * If we have now found the first (modified by chkdsk)
+			 * restart page, continue looking for the second one.
+			 */
+			if (!pos) {
+				pos = NTFS_BLOCK_SIZE >> 1;
+				continue;
+			}
+			/*
+			 * We have now found the second (modified by chkdsk)
+			 * restart page, so we can stop looking.
+			 */
+			break;
+		}
+		/*
+		 * Error output already done inside the function.  Note, we do
+		 * not abort if the restart page was invalid as we might still
+		 * find a valid one further in the file.
+		 */
+		if (err != EINVAL)
+		      goto err_out;
+		/* Continue looking. */
+		if (!pos)
+			pos = NTFS_BLOCK_SIZE >> 1;
+	}
+	if (kaddr) {
+		free(kaddr);
+		kaddr = NULL;
+	}
+	if (logfile_is_empty) {
+		NVolSetLogFileEmpty(vol);
+is_empty:
+		ntfs_log_trace("Done.  ($LogFile is empty.)\n");
+		return TRUE;
+	}
+	if (!rstr1_ph) {
+		if (rstr2_ph)
+			ntfs_log_error("BUG: rstr2_ph isn't NULL!\n");
+		ntfs_log_error("Did not find any restart pages in "
+			   "$LogFile and it was not empty.\n");
+		return FALSE;
+	}
+	/* If both restart pages were found, use the more recent one. */
+	if (rstr2_ph) {
+		/*
+		 * If the second restart area is more recent, switch to it.
+		 * Otherwise just throw it away.
+		 */
+		if (rstr2_lsn > rstr1_lsn) {
+			ntfs_log_debug("Using second restart page as it is more "
+					"recent.\n");
+			free(rstr1_ph);
+			rstr1_ph = rstr2_ph;
+			/* rstr1_lsn = rstr2_lsn; */
+		} else {
+			ntfs_log_debug("Using first restart page as it is more "
+					"recent.\n");
+			free(rstr2_ph);
+		}
+		rstr2_ph = NULL;
+	}
+	/* All consistency checks passed. */
+	if (rp)
+		*rp = rstr1_ph;
+	else
+		free(rstr1_ph);
+	ntfs_log_trace("Done.\n");
+	return TRUE;
+err_out:
+	free(kaddr);
+	free(rstr1_ph);
+	free(rstr2_ph);
+	return FALSE;
+}
+
+/**
+ * ntfs_is_logfile_clean - check in the journal if the volume is clean
+ * @log_na:	ntfs attribute of loaded journal $LogFile to check
+ * @rp:         copy of the current restart page
+ *
+ * Analyze the $LogFile journal and return TRUE if it indicates the volume was
+ * shutdown cleanly and FALSE if not.
+ *
+ * At present we only look at the two restart pages and ignore the log record
+ * pages.  This is a little bit crude in that there will be a very small number
+ * of cases where we think that a volume is dirty when in fact it is clean.
+ * This should only affect volumes that have not been shutdown cleanly but did
+ * not have any pending, non-check-pointed i/o, i.e. they were completely idle
+ * at least for the five seconds preceding the unclean shutdown.
+ *
+ * This function assumes that the $LogFile journal has already been consistency
+ * checked by a call to ntfs_check_logfile() and in particular if the $LogFile
+ * is empty this function requires that NVolLogFileEmpty() is true otherwise an
+ * empty volume will be reported as dirty.
+ */
+BOOL ntfs_is_logfile_clean(ntfs_attr *log_na, RESTART_PAGE_HEADER *rp)
+{
+	RESTART_AREA *ra;
+
+	ntfs_log_trace("Entering.\n");
+	/* An empty $LogFile must have been clean before it got emptied. */
+	if (NVolLogFileEmpty(log_na->ni->vol)) {
+		ntfs_log_trace("Done.  ($LogFile is empty.)\n");
+		return TRUE;
+	}
+	if (!rp) {
+		ntfs_log_error("Restart page header is NULL.\n");
+		return FALSE;
+	}
+	if (!ntfs_is_rstr_record(rp->magic) &&
+			!ntfs_is_chkd_record(rp->magic)) {
+		ntfs_log_error("Restart page buffer is invalid.  This is "
+			   "probably a bug in that the $LogFile should "
+			   "have been consistency checked before calling "
+			   "this function.\n");
+		return FALSE;
+	}
+
+	ra = (RESTART_AREA*)((u8*)rp + le16_to_cpu(rp->restart_area_offset));
+	/*
+	 * If the $LogFile has active clients, i.e. it is open, and we do not
+	 * have the RESTART_VOLUME_IS_CLEAN bit set in the restart area flags,
+	 * we assume there was an unclean shutdown.
+	 */
+	if (ra->client_in_use_list != LOGFILE_NO_CLIENT &&
+			!(ra->flags & RESTART_VOLUME_IS_CLEAN)) {
+		ntfs_log_debug("Done.  $LogFile indicates a dirty shutdown.\n");
+		return FALSE;
+	}
+	/* $LogFile indicates a clean shutdown. */
+	ntfs_log_trace("Done.  $LogFile indicates a clean shutdown.\n");
+	return TRUE;
+}
+
+/**
+ * ntfs_empty_logfile - empty the contents of the $LogFile journal
+ * @na:		ntfs attribute of journal $LogFile to empty
+ *
+ * Empty the contents of the $LogFile journal @na and return 0 on success and
+ * -1 on error.
+ *
+ * This function assumes that the $LogFile journal has already been consistency
+ * checked by a call to ntfs_check_logfile() and that ntfs_is_logfile_clean()
+ * has been used to ensure that the $LogFile is clean.
+ */
+int ntfs_empty_logfile(ntfs_attr *na)
+{
+	s64 len, pos, count;
+	char buf[NTFS_BUF_SIZE];
+
+	ntfs_log_trace("Entering.\n");
+	if (NVolLogFileEmpty(na->ni->vol))
+		return 0;
+
+	/* The $DATA attribute of the $LogFile has to be non-resident. */
+	if (!NAttrNonResident(na)) {
+		errno = EIO;
+		ntfs_log_perror("$LogFile $DATA attribute is resident!?!\n");
+		return -1;
+	}
+
+	/* Get length of $LogFile contents. */
+	len = na->data_size;
+	if (!len) {
+		ntfs_log_debug("$LogFile has zero length, no disk write "
+				"needed.\n");
+		return 0;
+	}
+
+	/* Read $LogFile until its end. We do this as a check for correct
+	   length thus making sure we are decompressing the mapping pairs
+	   array correctly and hence writing below is safe as well. */
+	pos = 0;
+	while ((count = ntfs_attr_pread(na, pos, NTFS_BUF_SIZE, buf)) > 0)
+		pos += count;
+
+	if (count == -1 || pos != len) {
+		ntfs_log_error("Amount of $LogFile data read does not "
+				"correspond to expected length!\n");
+		if (count != -1)
+			errno = EIO;
+		return -1;
+	}
+
+	/* Fill the buffer with 0xff's. */
+	memset(buf, -1, NTFS_BUF_SIZE);
+
+	/* Set the $DATA attribute. */
+	pos = 0;
+	while ((count = len - pos) > 0) {
+		if (count > NTFS_BUF_SIZE)
+			count = NTFS_BUF_SIZE;
+
+		if ((count = ntfs_attr_pwrite(na, pos, count, buf)) <= 0) {
+			ntfs_log_perror("Failed to set the $LogFile attribute "
+					"value.\n");
+			if (count != -1)
+				errno = EIO;
+			return -1;
+		}
+		pos += count;
+	}
+
+	/* Set the flag so we do not have to do it again on remount. */
+	NVolSetLogFileEmpty(na->ni->vol);
+	return 0;
+}

libntfs-3g/logging.c

@@ -0,0 +1,634 @@
+/**
+ * logging.c - Centralised logging.  Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2005 Richard Russon
+ * Copyright (c) 2005-2006 Szabolcs Szakacsits
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_STDIO_H
+#include <stdio.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#ifdef HAVE_STDARG_H
+#include <stdarg.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_SYSLOG_H
+#include <syslog.h>
+#endif
+
+#include "logging.h"
+#include "misc.h"
+
+#ifndef PATH_SEP
+#define PATH_SEP '/'
+#endif
+
+/* Colour prefixes and a suffix */
+static const char *col_green  = "\e[32m";
+static const char *col_cyan   = "\e[36m";
+static const char *col_yellow = "\e[01;33m";
+static const char *col_red    = "\e[01;31m";
+static const char *col_redinv = "\e[01;07;31m";
+static const char *col_end    = "\e[0m";
+
+/**
+ * struct ntfs_logging - Control info for the logging system
+ * @levels:	Bitfield of logging levels
+ * @flags:	Flags which affect the output style
+ * @handler:	Function to perform the actual logging
+ */
+struct ntfs_logging {
+	u32 levels;
+	u32 flags;
+	ntfs_log_handler *handler;
+};
+
+/**
+ * ntfs_log
+ * This struct controls all the logging within the library and tools.
+ */
+static struct ntfs_logging ntfs_log = {
+#ifdef DEBUG
+	NTFS_LOG_LEVEL_DEBUG | NTFS_LOG_LEVEL_TRACE |
+#endif
+	NTFS_LOG_LEVEL_INFO | NTFS_LOG_LEVEL_QUIET | NTFS_LOG_LEVEL_WARNING |
+	NTFS_LOG_LEVEL_ERROR | NTFS_LOG_LEVEL_PERROR | NTFS_LOG_LEVEL_CRITICAL |
+	NTFS_LOG_LEVEL_PROGRESS,
+	NTFS_LOG_FLAG_ONLYNAME,
+#ifdef DEBUG
+	ntfs_log_handler_outerr
+#else
+	ntfs_log_handler_null
+#endif
+};
+
+
+/**
+ * ntfs_log_get_levels - Get a list of the current logging levels
+ *
+ * Find out which logging levels are enabled.
+ *
+ * Returns:  Log levels in a 32-bit field
+ */
+u32 ntfs_log_get_levels(void)
+{
+	return ntfs_log.levels;
+}
+
+/**
+ * ntfs_log_set_levels - Enable extra logging levels
+ * @levels:	32-bit field of log levels to set
+ *
+ * Enable one or more logging levels.
+ * The logging levels are named: NTFS_LOG_LEVEL_*.
+ *
+ * Returns:  Log levels that were enabled before the call
+ */
+u32 ntfs_log_set_levels(u32 levels)
+{
+	u32 old;
+	old = ntfs_log.levels;
+	ntfs_log.levels |= levels;
+	return old;
+}
+
+/**
+ * ntfs_log_clear_levels - Disable some logging levels
+ * @levels:	32-bit field of log levels to clear
+ *
+ * Disable one or more logging levels.
+ * The logging levels are named: NTFS_LOG_LEVEL_*.
+ *
+ * Returns:  Log levels that were enabled before the call
+ */
+u32 ntfs_log_clear_levels(u32 levels)
+{
+	u32 old;
+	old = ntfs_log.levels;
+	ntfs_log.levels &= (~levels);
+	return old;
+}
+
+
+/**
+ * ntfs_log_get_flags - Get a list of logging style flags
+ *
+ * Find out which logging flags are enabled.
+ *
+ * Returns:  Logging flags in a 32-bit field
+ */
+u32 ntfs_log_get_flags(void)
+{
+	return ntfs_log.flags;
+}
+
+/**
+ * ntfs_log_set_flags - Enable extra logging style flags
+ * @flags:	32-bit field of logging flags to set
+ *
+ * Enable one or more logging flags.
+ * The log flags are named: NTFS_LOG_LEVEL_*.
+ *
+ * Returns:  Logging flags that were enabled before the call
+ */
+u32 ntfs_log_set_flags(u32 flags)
+{
+	u32 old;
+	old = ntfs_log.flags;
+	ntfs_log.flags |= flags;
+	return old;
+}
+
+/**
+ * ntfs_log_clear_flags - Disable some logging styles
+ * @flags:	32-bit field of logging flags to clear
+ *
+ * Disable one or more logging flags.
+ * The log flags are named: NTFS_LOG_LEVEL_*.
+ *
+ * Returns:  Logging flags that were enabled before the call
+ */
+u32 ntfs_log_clear_flags(u32 flags)
+{
+	u32 old;
+	old = ntfs_log.flags;
+	ntfs_log.flags &= (~flags);
+	return old;
+}
+
+
+/**
+ * ntfs_log_get_stream - Default output streams for logging levels
+ * @level:	Log level
+ *
+ * By default, urgent messages are sent to "stderr".
+ * Other messages are sent to "stdout".
+ *
+ * Returns:  "string"  Prefix to be used
+ */
+static FILE * ntfs_log_get_stream(u32 level)
+{
+	FILE *stream;
+
+	switch (level) {
+		case NTFS_LOG_LEVEL_INFO:
+		case NTFS_LOG_LEVEL_QUIET:
+		case NTFS_LOG_LEVEL_PROGRESS:
+		case NTFS_LOG_LEVEL_VERBOSE:
+			stream = stdout;
+			break;
+
+		case NTFS_LOG_LEVEL_DEBUG:
+		case NTFS_LOG_LEVEL_TRACE:
+		case NTFS_LOG_LEVEL_WARNING:
+		case NTFS_LOG_LEVEL_ERROR:
+		case NTFS_LOG_LEVEL_CRITICAL:
+		case NTFS_LOG_LEVEL_PERROR:
+		default:
+			stream = stderr;
+			break;
+	}
+
+	return stream;
+}
+
+/**
+ * ntfs_log_get_prefix - Default prefixes for logging levels
+ * @level:	Log level to be prefixed
+ *
+ * Prefixing the logging output can make it easier to parse.
+ *
+ * Returns:  "string"  Prefix to be used
+ */
+static const char * ntfs_log_get_prefix(u32 level)
+{
+	const char *prefix;
+
+	switch (level) {
+		case NTFS_LOG_LEVEL_DEBUG:
+			prefix = "DEBUG: ";
+			break;
+		case NTFS_LOG_LEVEL_TRACE:
+			prefix = "TRACE: ";
+			break;
+		case NTFS_LOG_LEVEL_QUIET:
+			prefix = "QUIET: ";
+			break;
+		case NTFS_LOG_LEVEL_INFO:
+			prefix = "INFO: ";
+			break;
+		case NTFS_LOG_LEVEL_VERBOSE:
+			prefix = "VERBOSE: ";
+			break;
+		case NTFS_LOG_LEVEL_PROGRESS:
+			prefix = "PROGRESS: ";
+			break;
+		case NTFS_LOG_LEVEL_WARNING:
+			prefix = "WARNING: ";
+			break;
+		case NTFS_LOG_LEVEL_ERROR:
+			prefix = "ERROR: ";
+			break;
+		case NTFS_LOG_LEVEL_PERROR:
+			prefix = "ERROR: ";
+			break;
+		case NTFS_LOG_LEVEL_CRITICAL:
+			prefix = "CRITICAL: ";
+			break;
+		default:
+			prefix = "";
+			break;
+	}
+
+	return prefix;
+}
+
+
+/**
+ * ntfs_log_set_handler - Provide an alternate logging handler
+ * @handler:	function to perform the logging
+ *
+ * This alternate handler will be called for all future logging requests.
+ * If no @handler is specified, logging will revert to the default handler.
+ */
+void ntfs_log_set_handler(ntfs_log_handler *handler)
+{
+	if (handler) {
+		ntfs_log.handler = handler;
+#ifdef HAVE_SYSLOG_H
+		if (handler == ntfs_log_handler_syslog)
+			openlog("libntfs", LOG_PID, LOG_USER);
+#endif
+	} else
+		ntfs_log.handler = ntfs_log_handler_null;
+}
+
+/**
+ * ntfs_log_redirect - Pass on the request to the real handler
+ * @function:	Function in which the log line occurred
+ * @file:	File in which the log line occurred
+ * @line:	Line number on which the log line occurred
+ * @level:	Level at which the line is logged
+ * @data:	User specified data, possibly specific to a handler
+ * @format:	printf-style formatting string
+ * @...:	Arguments to be formatted
+ *
+ * This is just a redirector function.  The arguments are simply passed to the
+ * main logging handler (as defined in the global logging struct @ntfs_log).
+ *
+ * Returns:  -1  Error occurred
+ *            0  Message wasn't logged
+ *          num  Number of output characters
+ */
+int ntfs_log_redirect(const char *function, const char *file,
+	int line, u32 level, void *data, const char *format, ...)
+{
+	int olderr = errno;
+	int ret;
+	va_list args;
+
+	if (!(ntfs_log.levels & level))		/* Don't log this message */
+		return 0;
+
+	va_start(args, format);
+	errno = olderr;
+	ret = ntfs_log.handler(function, file, line, level, data, format, args);
+	va_end(args);
+
+	errno = olderr;
+	return ret;
+}
+
+
+/**
+ * ntfs_log_handler_syslog - syslog logging handler
+ * @function:	Function in which the log line occurred
+ * @file:	File in which the log line occurred
+ * @line:	Line number on which the log line occurred
+ * @level:	Level at which the line is logged
+ * @data:	User specified data, possibly specific to a handler
+ * @format:	printf-style formatting string
+ * @args:	Arguments to be formatted
+ *
+ * A simple syslog logging handler.  Ignores colors.
+ *
+ * Returns:  -1  Error occurred
+ *            0  Message wasn't logged
+ *          num  Number of output characters
+ */
+
+#ifdef HAVE_SYSLOG_H
+int ntfs_log_handler_syslog(const char *function  __attribute__((unused)),
+	const char *file, __attribute__((unused)) int line, u32 level,
+	void *data __attribute__((unused)), const char *format, va_list args)
+{
+	int ret = 0;
+	int olderr = errno;
+
+	if ((ntfs_log.flags & NTFS_LOG_FLAG_ONLYNAME) &&
+	    (strchr(file, PATH_SEP)))		/* Abbreviate the filename */
+		file = strrchr(file, PATH_SEP) + 1;
+#if 0	/* FIXME: Implement this all. */
+	if (ntfs_log.flags & NTFS_LOG_FLAG_PREFIX)	/* Prefix the output */
+		ret += fprintf(stream, "%s", ntfs_log_get_prefix(level));
+
+	if (ntfs_log.flags & NTFS_LOG_FLAG_FILENAME)	/* Source filename */
+		ret += fprintf(stream, "%s ", file);
+
+	if (ntfs_log.flags & NTFS_LOG_FLAG_LINE)	/* Source line number */
+		ret += fprintf(stream, "(%d) ", line);
+
+	if ((ntfs_log.flags & NTFS_LOG_FLAG_FUNCTION) || /* Source function */
+	    (level & NTFS_LOG_LEVEL_TRACE))
+		ret += fprintf(stream, "%s(): ", function);
+
+	ret += vfprintf(stream, format, args);
+
+	if (level & NTFS_LOG_LEVEL_PERROR) {
+		if (reason)
+			ret += fprintf(stream, ": %s\n", reason);
+		else
+			ret += fprintf(stream, ": %s\n", strerror(olderr));
+	}
+#endif
+	vsyslog(LOG_NOTICE, format, args);
+	ret = 1; /* FIXME: caclulate how many bytes had been written. */
+
+	errno = olderr;
+	return ret;
+}
+#endif
+
+/**
+ * ntfs_log_handler_fprintf - Basic logging handler
+ * @function:	Function in which the log line occurred
+ * @file:	File in which the log line occurred
+ * @line:	Line number on which the log line occurred
+ * @level:	Level at which the line is logged
+ * @data:	User specified data, possibly specific to a handler
+ * @format:	printf-style formatting string
+ * @args:	Arguments to be formatted
+ *
+ * A simple logging handler.  This is where the log line is finally displayed.
+ * It is more likely that you will want to set the handler to either
+ * ntfs_log_handler_outerr or ntfs_log_handler_stderr.
+ *
+ * Note: For this handler, @data is a pointer to a FILE output stream.
+ *       If @data is NULL, nothing will be displayed.
+ *
+ * Returns:  -1  Error occurred
+ *            0  Message wasn't logged
+ *          num  Number of output characters
+ */
+int ntfs_log_handler_fprintf(const char *function, const char *file,
+	int line, u32 level, void *data, const char *format, va_list args)
+{
+	int ret = 0;
+	int olderr = errno;
+	FILE *stream;
+	const char *col_prefix = NULL;
+	const char *col_suffix = NULL;
+
+	if (!data)		/* Interpret data as a FILE stream. */
+		return 0;	/* If it's NULL, we can't do anything. */
+	stream = (FILE*)data;
+
+	if (ntfs_log.flags & NTFS_LOG_FLAG_COLOUR) {
+		/* Pick a colour determined by the log level */
+		switch (level) {
+			case NTFS_LOG_LEVEL_DEBUG:
+				col_prefix = col_green;
+				col_suffix = col_end;
+				break;
+			case NTFS_LOG_LEVEL_TRACE:
+				col_prefix = col_cyan;
+				col_suffix = col_end;
+				break;
+			case NTFS_LOG_LEVEL_WARNING:
+				col_prefix = col_yellow;
+				col_suffix = col_end;
+				break;
+			case NTFS_LOG_LEVEL_ERROR:
+			case NTFS_LOG_LEVEL_PERROR:
+				col_prefix = col_red;
+				col_suffix = col_end;
+				break;
+			case NTFS_LOG_LEVEL_CRITICAL:
+				col_prefix = col_redinv;
+				col_suffix = col_end;
+				break;
+		}
+	}
+
+	if (col_prefix)
+		ret += fprintf(stream, col_prefix);
+
+	if ((ntfs_log.flags & NTFS_LOG_FLAG_ONLYNAME) &&
+	    (strchr(file, PATH_SEP)))		/* Abbreviate the filename */
+		file = strrchr(file, PATH_SEP) + 1;
+
+	if (ntfs_log.flags & NTFS_LOG_FLAG_PREFIX)	/* Prefix the output */
+		ret += fprintf(stream, "%s", ntfs_log_get_prefix(level));
+
+	if (ntfs_log.flags & NTFS_LOG_FLAG_FILENAME)	/* Source filename */
+		ret += fprintf(stream, "%s ", file);
+
+	if (ntfs_log.flags & NTFS_LOG_FLAG_LINE)	/* Source line number */
+		ret += fprintf(stream, "(%d) ", line);
+
+	if ((ntfs_log.flags & NTFS_LOG_FLAG_FUNCTION) || /* Source function */
+	    (level & NTFS_LOG_LEVEL_TRACE))
+		ret += fprintf(stream, "%s(): ", function);
+
+	ret += vfprintf(stream, format, args);
+
+	if (level & NTFS_LOG_LEVEL_PERROR)
+		ret += fprintf(stream, ": %s\n", strerror(olderr));
+
+	if (col_suffix)
+		ret += fprintf(stream, col_suffix);
+
+
+	fflush(stream);
+	errno = olderr;
+	return ret;
+}
+
+/**
+ * ntfs_log_handler_null - Null logging handler (no output)
+ * @function:	Function in which the log line occurred
+ * @file:	File in which the log line occurred
+ * @line:	Line number on which the log line occurred
+ * @level:	Level at which the line is logged
+ * @data:	User specified data, possibly specific to a handler
+ * @format:	printf-style formatting string
+ * @args:	Arguments to be formatted
+ *
+ * This handler produces no output.  It provides a way to temporarily disable
+ * logging, without having to change the levels and flags.
+ *
+ * Returns:  0  Message wasn't logged
+ */
+int ntfs_log_handler_null(const char *function __attribute__((unused)), const char *file __attribute__((unused)),
+	int line __attribute__((unused)), u32 level __attribute__((unused)), void *data __attribute__((unused)),
+	const char *format __attribute__((unused)), va_list args __attribute__((unused)))
+{
+	return 0;
+}
+
+/**
+ * ntfs_log_handler_stdout - All logs go to stdout
+ * @function:	Function in which the log line occurred
+ * @file:	File in which the log line occurred
+ * @line:	Line number on which the log line occurred
+ * @level:	Level at which the line is logged
+ * @data:	User specified data, possibly specific to a handler
+ * @format:	printf-style formatting string
+ * @args:	Arguments to be formatted
+ *
+ * Display a log message to stdout.
+ *
+ * Note: For this handler, @data is a pointer to a FILE output stream.
+ *       If @data is NULL, then stdout will be used.
+ *
+ * Note: This function calls ntfs_log_handler_fprintf to do the main work.
+ *
+ * Returns:  -1  Error occurred
+ *            0  Message wasn't logged
+ *          num  Number of output characters
+ */
+int ntfs_log_handler_stdout(const char *function, const char *file,
+	int line, u32 level, void *data, const char *format, va_list args)
+{
+	if (!data)
+		data = stdout;
+
+	return ntfs_log_handler_fprintf(function, file, line, level, data, format, args);
+}
+
+/**
+ * ntfs_log_handler_outerr - Logs go to stdout/stderr depending on level
+ * @function:	Function in which the log line occurred
+ * @file:	File in which the log line occurred
+ * @line:	Line number on which the log line occurred
+ * @level:	Level at which the line is logged
+ * @data:	User specified data, possibly specific to a handler
+ * @format:	printf-style formatting string
+ * @args:	Arguments to be formatted
+ *
+ * Display a log message.  The output stream will be determined by the log
+ * level.
+ *
+ * Note: For this handler, @data is a pointer to a FILE output stream.
+ *       If @data is NULL, the function ntfs_log_get_stream will be called
+ *
+ * Note: This function calls ntfs_log_handler_fprintf to do the main work.
+ *
+ * Returns:  -1  Error occurred
+ *            0  Message wasn't logged
+ *          num  Number of output characters
+ */
+int ntfs_log_handler_outerr(const char *function, const char *file,
+	int line, u32 level, void *data, const char *format, va_list args)
+{
+	if (!data)
+		data = ntfs_log_get_stream(level);
+
+	return ntfs_log_handler_fprintf(function, file, line, level, data, format, args);
+}
+
+/**
+ * ntfs_log_handler_stderr - All logs go to stderr
+ * @function:	Function in which the log line occurred
+ * @file:	File in which the log line occurred
+ * @line:	Line number on which the log line occurred
+ * @level:	Level at which the line is logged
+ * @data:	User specified data, possibly specific to a handler
+ * @format:	printf-style formatting string
+ * @args:	Arguments to be formatted
+ *
+ * Display a log message to stderr.
+ *
+ * Note: For this handler, @data is a pointer to a FILE output stream.
+ *       If @data is NULL, then stdout will be used.
+ *
+ * Note: This function calls ntfs_log_handler_fprintf to do the main work.
+ *
+ * Returns:  -1  Error occurred
+ *            0  Message wasn't logged
+ *          num  Number of output characters
+ */
+int ntfs_log_handler_stderr(const char *function, const char *file,
+	int line, u32 level, void *data, const char *format, va_list args)
+{
+	if (!data)
+		data = stderr;
+
+	return ntfs_log_handler_fprintf(function, file, line, level, data, format, args);
+}
+
+
+/**
+ * ntfs_log_parse_option - Act upon command line options
+ * @option:	Option flag
+ *
+ * Delegate some of the work of parsing the command line.  All the options begin
+ * with "--log-".  Options cause log levels to be enabled in @ntfs_log (the
+ * global logging structure).
+ *
+ * Note: The "colour" option changes the logging handler.
+ *
+ * Returns:  TRUE  Option understood
+ *          FALSE  Invalid log option
+ */
+BOOL ntfs_log_parse_option(const char *option)
+{
+	if (strcmp(option, "--log-debug") == 0) {
+		ntfs_log_set_levels(NTFS_LOG_LEVEL_DEBUG);
+		return TRUE;
+	} else if (strcmp(option, "--log-verbose") == 0) {
+		ntfs_log_set_levels(NTFS_LOG_LEVEL_VERBOSE);
+		return TRUE;
+	} else if (strcmp(option, "--log-quiet") == 0) {
+		ntfs_log_clear_levels(NTFS_LOG_LEVEL_QUIET);
+		return TRUE;
+	} else if (strcmp(option, "--log-trace") == 0) {
+		ntfs_log_set_levels(NTFS_LOG_LEVEL_TRACE);
+		return TRUE;
+	} else if ((strcmp(option, "--log-colour") == 0) ||
+		   (strcmp(option, "--log-color") == 0)) {
+		ntfs_log_set_flags(NTFS_LOG_FLAG_COLOUR);
+		return TRUE;
+	}
+
+	ntfs_log_debug("Unknown logging option '%s'\n", option);
+	return FALSE;
+}
+

libntfs-3g/misc.c

@@ -0,0 +1,36 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#include "misc.h"
+#include "logging.h"
+
+/**
+ * ntfs_calloc
+ * 
+ * Return a pointer to the allocated memory or NULL if the request fails.
+ */
+void *ntfs_calloc(size_t size)
+{
+	void *p;
+	
+	p = calloc(1, size);
+	if (!p)
+		ntfs_log_perror("Failed to calloc %lld bytes", (long long)size);
+	return p;
+}
+
+void *ntfs_malloc(size_t size)
+{
+	void *p;
+	
+	p = malloc(size);
+	if (!p)
+		ntfs_log_perror("Failed to malloc %lld bytes", (long long)size);
+	return p;
+}
+

libntfs-3g/mst.c

@@ -0,0 +1,222 @@
+/**
+ * mst.c - Multi sector fixup handling code. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2000-2004 Anton Altaparmakov
+ * Copyright (c)      2006 Szabolcs Szakacsits
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#include "mst.h"
+#include "logging.h"
+
+/**
+ * ntfs_mst_post_read_fixup - deprotect multi sector transfer protected data
+ * @b:		pointer to the data to deprotect
+ * @size:	size in bytes of @b
+ *
+ * Perform the necessary post read multi sector transfer fixups and detect the
+ * presence of incomplete multi sector transfers. - In that case, overwrite the
+ * magic of the ntfs record header being processed with "BAAD" (in memory only!)
+ * and abort processing.
+ *
+ * Return 0 on success and -1 on error, with errno set to the error code. The
+ * following error codes are defined:
+ *	EINVAL	Invalid arguments or invalid NTFS record in buffer @b.
+ *	EIO	Multi sector transfer error was detected. Magic of the NTFS
+ *		record in @b will have been set to "BAAD".
+ */
+int ntfs_mst_post_read_fixup(NTFS_RECORD *b, const u32 size)
+{
+	u16 usa_ofs, usa_count, usn;
+	u16 *usa_pos, *data_pos;
+
+	ntfs_log_trace("Entering\n");
+
+	/* Setup the variables. */
+	usa_ofs = le16_to_cpu(b->usa_ofs);
+	/* Decrement usa_count to get number of fixups. */
+	usa_count = le16_to_cpu(b->usa_count) - 1;
+	/* Size and alignment checks. */
+	if (size & (NTFS_BLOCK_SIZE - 1) || usa_ofs & 1 ||
+			(u32)(usa_ofs + (usa_count * 2)) > size ||
+			(size >> NTFS_BLOCK_SIZE_BITS) != usa_count) {
+		errno = EINVAL;
+		return -1;
+	}
+	/* Position of usn in update sequence array. */
+	usa_pos = (u16*)b + usa_ofs/sizeof(u16);
+	/*
+	 * The update sequence number which has to be equal to each of the
+	 * u16 values before they are fixed up. Note no need to care for
+	 * endianness since we are comparing and moving data for on disk
+	 * structures which means the data is consistent. - If it is
+	 * consistency the wrong endianness it doesn't make any difference.
+	 */
+	usn = *usa_pos;
+	/*
+	 * Position in protected data of first u16 that needs fixing up.
+	 */
+	data_pos = (u16*)b + NTFS_BLOCK_SIZE/sizeof(u16) - 1;
+	/*
+	 * Check for incomplete multi sector transfer(s).
+	 */
+	while (usa_count--) {
+		if (*data_pos != usn) {
+			/*
+			 * Incomplete multi sector transfer detected! )-:
+			 * Set the magic to "BAAD" and return failure.
+			 * Note that magic_BAAD is already converted to le32.
+			 */
+			b->magic = magic_BAAD;
+			errno = EIO;
+			return -1;
+		}
+		data_pos += NTFS_BLOCK_SIZE/sizeof(u16);
+	}
+	/* Re-setup the variables. */
+	usa_count = le16_to_cpu(b->usa_count) - 1;
+	data_pos = (u16*)b + NTFS_BLOCK_SIZE/sizeof(u16) - 1;
+	/* Fixup all sectors. */
+	while (usa_count--) {
+		/*
+		 * Increment position in usa and restore original data from
+		 * the usa into the data buffer.
+		 */
+		*data_pos = *(++usa_pos);
+		/* Increment position in data as well. */
+		data_pos += NTFS_BLOCK_SIZE/sizeof(u16);
+	}
+	return 0;
+}
+
+/**
+ * ntfs_mst_pre_write_fixup - apply multi sector transfer protection
+ * @b:		pointer to the data to protect
+ * @size:	size in bytes of @b
+ *
+ * Perform the necessary pre write multi sector transfer fixup on the data
+ * pointer to by @b of @size.
+ *
+ * Return 0 if fixups applied successfully or -1 if no fixups were performed
+ * due to errors. In that case errno i set to the error code (EINVAL).
+ *
+ * NOTE: We consider the absence / invalidity of an update sequence array to
+ * mean error. This means that you have to create a valid update sequence
+ * array header in the ntfs record before calling this function, otherwise it
+ * will fail (the header needs to contain the position of the update sequence
+ * array together with the number of elements in the array). You also need to
+ * initialise the update sequence number before calling this function
+ * otherwise a random word will be used (whatever was in the record at that
+ * position at that time).
+ */
+int ntfs_mst_pre_write_fixup(NTFS_RECORD *b, const u32 size)
+{
+	u16 usa_ofs, usa_count, usn;
+	u16 *usa_pos, *data_pos;
+
+	ntfs_log_trace("Entering\n");
+
+	/* Sanity check + only fixup if it makes sense. */
+	if (!b || ntfs_is_baad_record(b->magic) ||
+			ntfs_is_hole_record(b->magic)) {
+		errno = EINVAL;
+		return -1;
+	}
+	/* Setup the variables. */
+	usa_ofs = le16_to_cpu(b->usa_ofs);
+	/* Decrement usa_count to get number of fixups. */
+	usa_count = le16_to_cpu(b->usa_count) - 1;
+	/* Size and alignment checks. */
+	if (size & (NTFS_BLOCK_SIZE - 1) || usa_ofs & 1 ||
+			(u32)(usa_ofs + (usa_count * 2)) > size ||
+			(size >> NTFS_BLOCK_SIZE_BITS) != usa_count) {
+		errno = EINVAL;
+		return -1;
+	}
+	/* Position of usn in update sequence array. */
+	usa_pos = (u16*)((u8*)b + usa_ofs);
+	/*
+	 * Cyclically increment the update sequence number
+	 * (skipping 0 and -1, i.e. 0xffff).
+	 */
+	usn = le16_to_cpup(usa_pos) + 1;
+	if (usn == 0xffff || !usn)
+		usn = 1;
+	usn = cpu_to_le16(usn);
+	*usa_pos = usn;
+	/* Position in data of first u16 that needs fixing up. */
+	data_pos = (u16*)b + NTFS_BLOCK_SIZE/sizeof(u16) - 1;
+	/* Fixup all sectors. */
+	while (usa_count--) {
+		/*
+		 * Increment the position in the usa and save the
+		 * original data from the data buffer into the usa.
+		 */
+		*(++usa_pos) = *data_pos;
+		/* Apply fixup to data. */
+		*data_pos = usn;
+		/* Increment position in data as well. */
+		data_pos += NTFS_BLOCK_SIZE/sizeof(u16);
+	}
+	return 0;
+}
+
+/**
+ * ntfs_mst_post_write_fixup - deprotect multi sector transfer protected data
+ * @b:		pointer to the data to deprotect
+ *
+ * Perform the necessary post write multi sector transfer fixup, not checking
+ * for any errors, because we assume we have just used
+ * ntfs_mst_pre_write_fixup(), thus the data will be fine or we would never
+ * have gotten here.
+ */
+void ntfs_mst_post_write_fixup(NTFS_RECORD *b)
+{
+	u16 *usa_pos, *data_pos;
+
+	u16 usa_ofs = le16_to_cpu(b->usa_ofs);
+	u16 usa_count = le16_to_cpu(b->usa_count) - 1;
+
+	ntfs_log_trace("Entering\n");
+
+	/* Position of usn in update sequence array. */
+	usa_pos = (u16*)b + usa_ofs/sizeof(u16);
+
+	/* Position in protected data of first u16 that needs fixing up. */
+	data_pos = (u16*)b + NTFS_BLOCK_SIZE/sizeof(u16) - 1;
+
+	/* Fixup all sectors. */
+	while (usa_count--) {
+		/*
+		 * Increment position in usa and restore original data from
+		 * the usa into the data buffer.
+		 */
+		*data_pos = *(++usa_pos);
+
+		/* Increment position in data as well. */
+		data_pos += NTFS_BLOCK_SIZE/sizeof(u16);
+	}
+}
+

libntfs-3g/security.c

@@ -0,0 +1,340 @@
+/**
+ * security.c - Handling security/ACLs in NTFS.  Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2004 Anton Altaparmakov
+ * Copyright (c) 2005-2006 Szabolcs Szakacsits
+ * Copyright (c) 2006 Yura Pakhuchiy
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_STDIO_H
+#include <stdio.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#include "types.h"
+#include "layout.h"
+#include "attrib.h"
+#include "security.h"
+#include "misc.h"
+
+/*
+ * The zero GUID.
+ */
+static const GUID __zero_guid = { const_cpu_to_le32(0), const_cpu_to_le16(0),
+		const_cpu_to_le16(0), { 0, 0, 0, 0, 0, 0, 0, 0 } };
+const GUID *const zero_guid = &__zero_guid;
+
+/**
+ * ntfs_guid_is_zero - check if a GUID is zero
+ * @guid:	[IN] guid to check
+ *
+ * Return TRUE if @guid is a valid pointer to a GUID and it is the zero GUID
+ * and FALSE otherwise.
+ */
+BOOL ntfs_guid_is_zero(const GUID *guid)
+{
+	return (memcmp(guid, zero_guid, sizeof(*zero_guid)));
+}
+
+/**
+ * ntfs_guid_to_mbs - convert a GUID to a multi byte string
+ * @guid:	[IN]  guid to convert
+ * @guid_str:	[OUT] string in which to return the GUID (optional)
+ *
+ * Convert the GUID pointed to by @guid to a multi byte string of the form
+ * "XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX".  Therefore, @guid_str (if not NULL)
+ * needs to be able to store at least 37 bytes.
+ *
+ * If @guid_str is not NULL it will contain the converted GUID on return.  If
+ * it is NULL a string will be allocated and this will be returned.  The caller
+ * is responsible for free()ing the string in that case.
+ *
+ * On success return the converted string and on failure return NULL with errno
+ * set to the error code.
+ */
+char *ntfs_guid_to_mbs(const GUID *guid, char *guid_str)
+{
+	char *_guid_str;
+	int res;
+
+	if (!guid) {
+		errno = EINVAL;
+		return NULL;
+	}
+	_guid_str = guid_str;
+	if (!_guid_str) {
+		_guid_str = ntfs_malloc(37);
+		if (!_guid_str)
+			return _guid_str;
+	}
+	res = snprintf(_guid_str, 37,
+			"%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
+			(unsigned int)le32_to_cpu(guid->data1),
+			le16_to_cpu(guid->data2), le16_to_cpu(guid->data3),
+			guid->data4[0], guid->data4[1],
+			guid->data4[2], guid->data4[3], guid->data4[4],
+			guid->data4[5], guid->data4[6], guid->data4[7]);
+	if (res == 36)
+		return _guid_str;
+	if (!guid_str)
+		free(_guid_str);
+	errno = EINVAL;
+	return NULL;
+}
+
+/**
+ * ntfs_sid_to_mbs_size - determine maximum size for the string of a SID
+ * @sid:	[IN]  SID for which to determine the maximum string size
+ *
+ * Determine the maximum multi byte string size in bytes which is needed to
+ * store the standard textual representation of the SID pointed to by @sid.
+ * See ntfs_sid_to_mbs(), below.
+ *
+ * On success return the maximum number of bytes needed to store the multi byte
+ * string and on failure return -1 with errno set to the error code.
+ */
+int ntfs_sid_to_mbs_size(const SID *sid)
+{
+	int size, i;
+
+	if (!ntfs_sid_is_valid(sid)) {
+		errno = EINVAL;
+		return -1;
+	}
+	/* Start with "S-". */
+	size = 2;
+	/*
+	 * Add the SID_REVISION.  Hopefully the compiler will optimize this
+	 * away as SID_REVISION is a constant.
+	 */
+	for (i = SID_REVISION; i > 0; i /= 10)
+		size++;
+	/* Add the "-". */
+	size++;
+	/*
+	 * Add the identifier authority.  If it needs to be in decimal, the
+	 * maximum is 2^32-1 = 4294967295 = 10 characters.  If it needs to be
+	 * in hexadecimal, then maximum is 0x665544332211 = 14 characters.
+	 */
+	if (!sid->identifier_authority.high_part)
+		size += 10;
+	else
+		size += 14;
+	/*
+	 * Finally, add the sub authorities.  For each we have a "-" followed
+	 * by a decimal which can be up to 2^32-1 = 4294967295 = 10 characters.
+	 */
+	size += (1 + 10) * sid->sub_authority_count;
+	/* We need the zero byte at the end, too. */
+	size++;
+	return size * sizeof(char);
+}
+
+/**
+ * ntfs_sid_to_mbs - convert a SID to a multi byte string
+ * @sid:		[IN]  SID to convert
+ * @sid_str:		[OUT] string in which to return the SID (optional)
+ * @sid_str_size:	[IN]  size in bytes of @sid_str
+ *
+ * Convert the SID pointed to by @sid to its standard textual representation.
+ * @sid_str (if not NULL) needs to be able to store at least
+ * ntfs_sid_to_mbs_size() bytes.  @sid_str_size is the size in bytes of
+ * @sid_str if @sid_str is not NULL.
+ *
+ * The standard textual representation of the SID is of the form:
+ *	S-R-I-S-S...
+ * Where:
+ *    - The first "S" is the literal character 'S' identifying the following
+ *	digits as a SID.
+ *    - R is the revision level of the SID expressed as a sequence of digits
+ *	in decimal.
+ *    - I is the 48-bit identifier_authority, expressed as digits in decimal,
+ *	if I < 2^32, or hexadecimal prefixed by "0x", if I >= 2^32.
+ *    - S... is one or more sub_authority values, expressed as digits in
+ *	decimal.
+ *
+ * If @sid_str is not NULL it will contain the converted SUID on return.  If it
+ * is NULL a string will be allocated and this will be returned.  The caller is
+ * responsible for free()ing the string in that case.
+ *
+ * On success return the converted string and on failure return NULL with errno
+ * set to the error code.
+ */
+char *ntfs_sid_to_mbs(const SID *sid, char *sid_str, size_t sid_str_size)
+{
+	u64 u;
+	char *s;
+	int i, j, cnt;
+
+	/*
+	 * No need to check @sid if !@sid_str since ntfs_sid_to_mbs_size() will
+	 * check @sid, too.  8 is the minimum SID string size.
+	 */
+	if (sid_str && (sid_str_size < 8 || !ntfs_sid_is_valid(sid))) {
+		errno = EINVAL;
+		return NULL;
+	}
+	/* Allocate string if not provided. */
+	if (!sid_str) {
+		cnt = ntfs_sid_to_mbs_size(sid);
+		if (cnt < 0)
+			return NULL;
+		s = ntfs_malloc(cnt);
+		if (!s)
+			return s;
+		sid_str = s;
+		/* So we know we allocated it. */
+		sid_str_size = 0;
+	} else {
+		s = sid_str;
+		cnt = sid_str_size;
+	}
+	/* Start with "S-R-". */
+	i = snprintf(s, cnt, "S-%hhu-", (unsigned char)sid->revision);
+	if (i < 0 || i >= cnt)
+		goto err_out;
+	s += i;
+	cnt -= i;
+	/* Add the identifier authority. */
+	for (u = i = 0, j = 40; i < 6; i++, j -= 8)
+		u += (u64)sid->identifier_authority.value[i] << j;
+	if (!sid->identifier_authority.high_part)
+		i = snprintf(s, cnt, "%lu", (unsigned long)u);
+	else
+		i = snprintf(s, cnt, "0x%llx", (unsigned long long)u);
+	if (i < 0 || i >= cnt)
+		goto err_out;
+	s += i;
+	cnt -= i;
+	/* Finally, add the sub authorities. */
+	for (j = 0; j < sid->sub_authority_count; j++) {
+		i = snprintf(s, cnt, "-%u", (unsigned int)
+				le32_to_cpu(sid->sub_authority[j]));
+		if (i < 0 || i >= cnt)
+			goto err_out;
+		s += i;
+		cnt -= i;
+	}
+	return sid_str;
+err_out:
+	if (i >= cnt)
+		i = EMSGSIZE;
+	else
+		i = errno;
+	if (!sid_str_size)
+		free(sid_str);
+	errno = i;
+	return NULL;
+}
+
+/**
+ * ntfs_generate_guid - generatates a random current guid.
+ * @guid:	[OUT]   pointer to a GUID struct to hold the generated guid.
+ *
+ * perhaps not a very good random number generator though...
+ */
+void ntfs_generate_guid(GUID *guid)
+{
+	unsigned int i;
+	u8 *p = (u8 *)guid;
+
+	for (i = 0; i < sizeof(GUID); i++) {
+		p[i] = (u8)(random() & 0xFF);
+		if (i == 7)
+			p[7] = (p[7] & 0x0F) | 0x40;
+		if (i == 8)
+			p[8] = (p[8] & 0x3F) | 0x80;
+	}
+}
+
+int ntfs_sd_add_everyone(ntfs_inode *ni)
+{
+	SECURITY_DESCRIPTOR_ATTR *sd;
+	ACL *acl;
+	ACCESS_ALLOWED_ACE *ace;
+	SID *sid;
+	int ret, sd_len;
+	
+	/* Create SECURITY_DESCRIPTOR attribute (everyone has full access). */
+	/*
+	 * Calculate security descriptor length. We have 2 sub-authorities in
+	 * owner and group SIDs, but structure SID contain only one, so add
+	 * 4 bytes to every SID.
+	 */
+	sd_len = sizeof(SECURITY_DESCRIPTOR_ATTR) + 2 * (sizeof(SID) + 4) +
+		sizeof(ACL) + sizeof(ACCESS_ALLOWED_ACE); 
+	sd = ntfs_calloc(sd_len);
+	if (!sd)
+		return -1;
+	
+	sd->revision = 1;
+	sd->control = SE_DACL_PRESENT | SE_SELF_RELATIVE;
+	
+	sid = (SID *)((u8 *)sd + sizeof(SECURITY_DESCRIPTOR_ATTR));
+	sid->revision = 1;
+	sid->sub_authority_count = 2;
+	sid->sub_authority[0] = cpu_to_le32(SECURITY_BUILTIN_DOMAIN_RID);
+	sid->sub_authority[1] = cpu_to_le32(DOMAIN_ALIAS_RID_ADMINS);
+	sid->identifier_authority.value[5] = 5;
+	sd->owner = cpu_to_le32((u8 *)sid - (u8 *)sd);
+	
+	sid = (SID *)((u8 *)sid + sizeof(SID) + 4); 
+	sid->revision = 1;
+	sid->sub_authority_count = 2;
+	sid->sub_authority[0] = cpu_to_le32(SECURITY_BUILTIN_DOMAIN_RID);
+	sid->sub_authority[1] = cpu_to_le32(DOMAIN_ALIAS_RID_ADMINS);
+	sid->identifier_authority.value[5] = 5;
+	sd->group = cpu_to_le32((u8 *)sid - (u8 *)sd);
+	
+	acl = (ACL *)((u8 *)sid + sizeof(SID) + 4);
+	acl->revision = 2;
+	acl->size = cpu_to_le16(sizeof(ACL) + sizeof(ACCESS_ALLOWED_ACE));
+	acl->ace_count = cpu_to_le16(1);
+	sd->dacl = cpu_to_le32((u8 *)acl - (u8 *)sd);
+	
+	ace = (ACCESS_ALLOWED_ACE *)((u8 *)acl + sizeof(ACL));
+	ace->type = ACCESS_ALLOWED_ACE_TYPE;
+	ace->flags = OBJECT_INHERIT_ACE | CONTAINER_INHERIT_ACE;
+	ace->size = cpu_to_le16(sizeof(ACCESS_ALLOWED_ACE));
+	ace->mask = cpu_to_le32(0x1f01ff); /* FIXME */
+	ace->sid.revision = 1;
+	ace->sid.sub_authority_count = 1;
+	ace->sid.sub_authority[0] = 0;
+	ace->sid.identifier_authority.value[5] = 1;
+	
+	ret = ntfs_attr_add(ni, AT_SECURITY_DESCRIPTOR, AT_UNNAMED, 0, (u8 *)sd,
+			    sd_len);
+	if (ret)
+		ntfs_log_perror("Failed to add SECURITY_DESCRIPTOR\n");
+	
+	free(sd);
+	return ret;
+}
+

libntfs-3g/unistr.c

@@ -0,0 +1,757 @@
+/**
+ * unistr.c - Unicode string handling. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2000-2004 Anton Altaparmakov
+ * Copyright (c) 2002-2006 Szabolcs Szakacsits
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_STDIO_H
+#include <stdio.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_WCHAR_H
+#include <wchar.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#include "attrib.h"
+#include "types.h"
+#include "unistr.h"
+#include "debug.h"
+#include "logging.h"
+#include "misc.h"
+
+/*
+ * IMPORTANT
+ * =========
+ *
+ * All these routines assume that the Unicode characters are in little endian
+ * encoding inside the strings!!!
+ */
+
+/*
+ * This is used by the name collation functions to quickly determine what
+ * characters are (in)valid.
+ */
+#if 0
+static const u8 legal_ansi_char_array[0x40] = {
+	0x00, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
+	0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
+
+	0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
+	0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
+
+	0x17, 0x07, 0x18, 0x17, 0x17, 0x17, 0x17, 0x17,
+	0x17, 0x17, 0x18, 0x16, 0x16, 0x17, 0x07, 0x00,
+
+	0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x17,
+	0x17, 0x17, 0x04, 0x16, 0x18, 0x16, 0x18, 0x18,
+};
+#endif
+
+/**
+ * ntfs_names_are_equal - compare two Unicode names for equality
+ * @s1:			name to compare to @s2
+ * @s1_len:		length in Unicode characters of @s1
+ * @s2:			name to compare to @s1
+ * @s2_len:		length in Unicode characters of @s2
+ * @ic:			ignore case bool
+ * @upcase:		upcase table (only if @ic == IGNORE_CASE)
+ * @upcase_size:	length in Unicode characters of @upcase (if present)
+ *
+ * Compare the names @s1 and @s2 and return TRUE (1) if the names are
+ * identical, or FALSE (0) if they are not identical. If @ic is IGNORE_CASE,
+ * the @upcase table is used to perform a case insensitive comparison.
+ */
+BOOL ntfs_names_are_equal(const ntfschar *s1, size_t s1_len,
+		const ntfschar *s2, size_t s2_len,
+		const IGNORE_CASE_BOOL ic,
+		const ntfschar *upcase, const u32 upcase_size)
+{
+	if (s1_len != s2_len)
+		return FALSE;
+	if (!s1_len)
+		return TRUE;
+	if (ic == CASE_SENSITIVE)
+		return ntfs_ucsncmp(s1, s2, s1_len) ? FALSE: TRUE;
+	return ntfs_ucsncasecmp(s1, s2, s1_len, upcase, upcase_size) ? FALSE:
+								       TRUE;
+}
+
+/**
+ * ntfs_names_collate - collate two Unicode names
+ * @name1:	first Unicode name to compare
+ * @name1_len:	length of first Unicode name to compare
+ * @name2:	second Unicode name to compare
+ * @name2_len:	length of second Unicode name to compare
+ * @err_val:	if @name1 contains an invalid character return this value
+ * @ic:		either CASE_SENSITIVE or IGNORE_CASE
+ * @upcase:	upcase table (ignored if @ic is CASE_SENSITIVE)
+ * @upcase_len:	upcase table size (ignored if @ic is CASE_SENSITIVE)
+ *
+ * ntfs_names_collate() collates two Unicode names and returns:
+ *
+ *  -1 if the first name collates before the second one,
+ *   0 if the names match,
+ *   1 if the second name collates before the first one, or
+ * @err_val if an invalid character is found in @name1 during the comparison.
+ *
+ * The following characters are considered invalid: '"', '*', '<', '>' and '?'.
+ */
+int ntfs_names_collate(const ntfschar *name1, const u32 name1_len,
+		const ntfschar *name2, const u32 name2_len,
+		const int err_val __attribute__((unused)),
+		const IGNORE_CASE_BOOL ic, const ntfschar *upcase,
+		const u32 upcase_len)
+{
+	u32 cnt;
+	ntfschar c1, c2;
+
+#ifdef DEBUG
+	if (!name1 || !name2 || (ic && (!upcase || !upcase_len))) {
+		ntfs_log_debug("ntfs_names_collate received NULL pointer!\n");
+		exit(1);
+	}
+#endif
+	for (cnt = 0; cnt < min(name1_len, name2_len); ++cnt) {
+		c1 = le16_to_cpu(*name1);
+		name1++;
+		c2 = le16_to_cpu(*name2);
+		name2++;
+		if (ic) {
+			if (c1 < upcase_len)
+				c1 = le16_to_cpu(upcase[c1]);
+			if (c2 < upcase_len)
+				c2 = le16_to_cpu(upcase[c2]);
+		}
+#if 0
+		if (c1 < 64 && legal_ansi_char_array[c1] & 8)
+			return err_val;
+#endif
+		if (c1 < c2)
+			return -1;
+		if (c1 > c2)
+			return 1;
+	}
+	if (name1_len < name2_len)
+		return -1;
+	if (name1_len == name2_len)
+		return 0;
+	/* name1_len > name2_len */
+#if 0
+	c1 = le16_to_cpu(*name1);
+	if (c1 < 64 && legal_ansi_char_array[c1] & 8)
+		return err_val;
+#endif
+	return 1;
+}
+
+/**
+ * ntfs_ucsncmp - compare two little endian Unicode strings
+ * @s1:		first string
+ * @s2:		second string
+ * @n:		maximum unicode characters to compare
+ *
+ * Compare the first @n characters of the Unicode strings @s1 and @s2,
+ * The strings in little endian format and appropriate le16_to_cpu()
+ * conversion is performed on non-little endian machines.
+ *
+ * The function returns an integer less than, equal to, or greater than zero
+ * if @s1 (or the first @n Unicode characters thereof) is found, respectively,
+ * to be less than, to match, or be greater than @s2.
+ */
+int ntfs_ucsncmp(const ntfschar *s1, const ntfschar *s2, size_t n)
+{
+	ntfschar c1, c2;
+	size_t i;
+
+#ifdef DEBUG
+	if (!s1 || !s2) {
+		ntfs_log_debug("ntfs_wcsncmp() received NULL pointer!\n");
+		exit(1);
+	}
+#endif
+	for (i = 0; i < n; ++i) {
+		c1 = le16_to_cpu(s1[i]);
+		c2 = le16_to_cpu(s2[i]);
+		if (c1 < c2)
+			return -1;
+		if (c1 > c2)
+			return 1;
+		if (!c1)
+			break;
+	}
+	return 0;
+}
+
+/**
+ * ntfs_ucsncasecmp - compare two little endian Unicode strings, ignoring case
+ * @s1:			first string
+ * @s2:			second string
+ * @n:			maximum unicode characters to compare
+ * @upcase:		upcase table
+ * @upcase_size:	upcase table size in Unicode characters
+ *
+ * Compare the first @n characters of the Unicode strings @s1 and @s2,
+ * ignoring case. The strings in little endian format and appropriate
+ * le16_to_cpu() conversion is performed on non-little endian machines.
+ *
+ * Each character is uppercased using the @upcase table before the comparison.
+ *
+ * The function returns an integer less than, equal to, or greater than zero
+ * if @s1 (or the first @n Unicode characters thereof) is found, respectively,
+ * to be less than, to match, or be greater than @s2.
+ */
+int ntfs_ucsncasecmp(const ntfschar *s1, const ntfschar *s2, size_t n,
+		const ntfschar *upcase, const u32 upcase_size)
+{
+	ntfschar c1, c2;
+	size_t i;
+
+#ifdef DEBUG
+	if (!s1 || !s2 || !upcase) {
+		ntfs_log_debug("ntfs_wcsncasecmp() received NULL pointer!\n");
+		exit(1);
+	}
+#endif
+	for (i = 0; i < n; ++i) {
+		if ((c1 = le16_to_cpu(s1[i])) < upcase_size)
+			c1 = le16_to_cpu(upcase[c1]);
+		if ((c2 = le16_to_cpu(s2[i])) < upcase_size)
+			c2 = le16_to_cpu(upcase[c2]);
+		if (c1 < c2)
+			return -1;
+		if (c1 > c2)
+			return 1;
+		if (!c1)
+			break;
+	}
+	return 0;
+}
+
+/**
+ * ntfs_ucsnlen - determine the length of a little endian Unicode string
+ * @s:		pointer to Unicode string
+ * @maxlen:	maximum length of string @s
+ *
+ * Return the number of Unicode characters in the little endian Unicode
+ * string @s up to a maximum of maxlen Unicode characters, not including
+ * the terminating (ntfschar)'\0'. If there is no (ntfschar)'\0' between @s
+ * and @s + @maxlen, @maxlen is returned.
+ *
+ * This function never looks beyond @s + @maxlen.
+ */
+u32 ntfs_ucsnlen(const ntfschar *s, u32 maxlen)
+{
+	u32 i;
+
+	for (i = 0; i < maxlen; i++) {
+		if (!le16_to_cpu(s[i]))
+			break;
+	}
+	return i;
+}
+
+/**
+ * ntfs_ucsndup - duplicate little endian Unicode string
+ * @s:		pointer to Unicode string
+ * @maxlen:	maximum length of string @s
+ *
+ * Return a pointer to a new little endian Unicode string which is a duplicate
+ * of the string s.  Memory for the new string is obtained with ntfs_malloc(3),
+ * and can be freed with free(3).
+ *
+ * A maximum of @maxlen Unicode characters are copied and a terminating
+ * (ntfschar)'\0' little endian Unicode character is added.
+ *
+ * This function never looks beyond @s + @maxlen.
+ *
+ * Return a pointer to the new little endian Unicode string on success and NULL
+ * on failure with errno set to the error code.
+ */
+ntfschar *ntfs_ucsndup(const ntfschar *s, u32 maxlen)
+{
+	ntfschar *dst;
+	u32 len;
+
+	len = ntfs_ucsnlen(s, maxlen);
+	dst = ntfs_malloc((len + 1) * sizeof(ntfschar));
+	if (dst) {
+		memcpy(dst, s, len * sizeof(ntfschar));
+		dst[len] = cpu_to_le16(L'\0');
+	}
+	return dst;
+}
+
+/**
+ * ntfs_name_upcase - Map an Unicode name to its uppercase equivalent
+ * @name:
+ * @name_len:
+ * @upcase:
+ * @upcase_len:
+ *
+ * Description...
+ *
+ * Returns:
+ */
+void ntfs_name_upcase(ntfschar *name, u32 name_len, const ntfschar *upcase,
+		const u32 upcase_len)
+{
+	u32 i;
+	ntfschar u;
+
+	for (i = 0; i < name_len; i++)
+		if ((u = le16_to_cpu(name[i])) < upcase_len)
+			name[i] = upcase[u];
+}
+
+/**
+ * ntfs_file_value_upcase - Convert a filename to upper case
+ * @file_name_attr:
+ * @upcase:
+ * @upcase_len:
+ *
+ * Description...
+ *
+ * Returns:
+ */
+void ntfs_file_value_upcase(FILE_NAME_ATTR *file_name_attr,
+		const ntfschar *upcase, const u32 upcase_len)
+{
+	ntfs_name_upcase((ntfschar*)&file_name_attr->file_name,
+			file_name_attr->file_name_length, upcase, upcase_len);
+}
+
+/**
+ * ntfs_file_values_compare - Which of two filenames should be listed first
+ * @file_name_attr1:
+ * @file_name_attr2:
+ * @err_val:
+ * @ic:
+ * @upcase:
+ * @upcase_len:
+ *
+ * Description...
+ *
+ * Returns:
+ */
+int ntfs_file_values_compare(const FILE_NAME_ATTR *file_name_attr1,
+		const FILE_NAME_ATTR *file_name_attr2,
+		const int err_val, const IGNORE_CASE_BOOL ic,
+		const ntfschar *upcase, const u32 upcase_len)
+{
+	return ntfs_names_collate((ntfschar*)&file_name_attr1->file_name,
+			file_name_attr1->file_name_length,
+			(ntfschar*)&file_name_attr2->file_name,
+			file_name_attr2->file_name_length,
+			err_val, ic, upcase, upcase_len);
+}
+
+/**
+ * ntfs_ucstombs - convert a little endian Unicode string to a multibyte string
+ * @ins:	input Unicode string buffer
+ * @ins_len:	length of input string in Unicode characters
+ * @outs:	on return contains the (allocated) output multibyte string
+ * @outs_len:	length of output buffer in bytes
+ *
+ * Convert the input little endian, 2-byte Unicode string @ins, of length
+ * @ins_len into the multibyte string format dictated by the current locale.
+ *
+ * If *@outs is NULL, the function allocates the string and the caller is
+ * responsible for calling free(*@outs); when finished with it.
+ *
+ * On success the function returns the number of bytes written to the output
+ * string *@outs (>= 0), not counting the terminating NULL byte. If the output
+ * string buffer was allocated, *@outs is set to it.
+ *
+ * On error, -1 is returned, and errno is set to the error code. The following
+ * error codes can be expected:
+ *	EINVAL		Invalid arguments (e.g. @ins or @outs is NULL).
+ *	EILSEQ		The input string cannot be represented as a multibyte
+ *			sequence according to the current locale.
+ *	ENAMETOOLONG	Destination buffer is too small for input string.
+ *	ENOMEM		Not enough memory to allocate destination buffer.
+ */
+int ntfs_ucstombs(const ntfschar *ins, const int ins_len, char **outs,
+		int outs_len)
+{
+	char *mbs;
+	wchar_t wc;
+	int i, o, mbs_len;
+	int cnt = 0;
+#ifdef HAVE_MBSINIT
+	mbstate_t mbstate;
+#endif
+
+	if (!ins || !outs) {
+		errno = EINVAL;
+		return -1;
+	}
+	mbs = *outs;
+	mbs_len = outs_len;
+	if (mbs && !mbs_len) {
+		errno = ENAMETOOLONG;
+		return -1;
+	}
+	if (!mbs) {
+		mbs_len = (ins_len + 1) * MB_CUR_MAX;
+		mbs = ntfs_malloc(mbs_len);
+		if (!mbs)
+			return -1;
+	}
+#ifdef HAVE_MBSINIT
+	memset(&mbstate, 0, sizeof(mbstate));
+#else
+	wctomb(NULL, 0);
+#endif
+	for (i = o = 0; i < ins_len; i++) {
+		/* Reallocate memory if necessary or abort. */
+		if ((int)(o + MB_CUR_MAX) > mbs_len) {
+			char *tc;
+			if (mbs == *outs) {
+				errno = ENAMETOOLONG;
+				return -1;
+			}
+			tc = ntfs_malloc((mbs_len + 64) & ~63);
+			if (!tc)
+				goto err_out;
+			memcpy(tc, mbs, mbs_len);
+			mbs_len = (mbs_len + 64) & ~63;
+			free(mbs);
+			mbs = tc;
+		}
+		/* Convert the LE Unicode character to a CPU wide character. */
+		wc = (wchar_t)le16_to_cpu(ins[i]);
+		if (!wc)
+			break;
+		/* Convert the CPU endian wide character to multibyte. */
+#ifdef HAVE_MBSINIT
+		cnt = wcrtomb(mbs + o, wc, &mbstate);
+#else
+		cnt = wctomb(mbs + o, wc);
+#endif
+		if (cnt == -1)
+			goto err_out;
+		if (cnt <= 0) {
+			ntfs_log_debug("Eeek. cnt <= 0, cnt = %i\n", cnt);
+			errno = EINVAL;
+			goto err_out;
+		}
+		o += cnt;
+	}
+#ifdef HAVE_MBSINIT
+	/* Make sure we are back in the initial state. */
+	if (!mbsinit(&mbstate)) {
+		ntfs_log_debug("Eeek. mbstate not in initial state!\n");
+		errno = EILSEQ;
+		goto err_out;
+	}
+#endif
+	/* Now write the NULL character. */
+	mbs[o] = '\0';
+	if (*outs != mbs)
+		*outs = mbs;
+	return o;
+err_out:
+	if (mbs != *outs) {
+		int eo = errno;
+		free(mbs);
+		errno = eo;
+	}
+	return -1;
+}
+
+/**
+ * ntfs_mbstoucs - convert a multibyte string to a little endian Unicode string
+ * @ins:	input multibyte string buffer
+ * @outs:	on return contains the (allocated) output Unicode string
+ * @outs_len:	length of output buffer in Unicode characters
+ *
+ * Convert the input multibyte string @ins, from the current locale into the
+ * corresponding little endian, 2-byte Unicode string.
+ *
+ * If *@outs is NULL, the function allocates the string and the caller is
+ * responsible for calling free(*@outs); when finished with it.
+ *
+ * On success the function returns the number of Unicode characters written to
+ * the output string *@outs (>= 0), not counting the terminating Unicode NULL
+ * character. If the output string buffer was allocated, *@outs is set to it.
+ *
+ * On error, -1 is returned, and errno is set to the error code. The following
+ * error codes can be expected:
+ *	EINVAL		Invalid arguments (e.g. @ins or @outs is NULL).
+ *	EILSEQ		The input string cannot be represented as a Unicode
+ *			string according to the current locale.
+ *	ENAMETOOLONG	Destination buffer is too small for input string.
+ *	ENOMEM		Not enough memory to allocate destination buffer.
+ */
+int ntfs_mbstoucs(const char *ins, ntfschar **outs, int outs_len)
+{
+	ntfschar *ucs;
+	const char *s;
+	wchar_t wc;
+	int i, o, cnt, ins_len, ucs_len, ins_size;
+#ifdef HAVE_MBSINIT
+	mbstate_t mbstate;
+#endif
+
+	if (!ins || !outs) {
+		errno = EINVAL;
+		return -1;
+	}
+	ucs = *outs;
+	ucs_len = outs_len;
+	if (ucs && !ucs_len) {
+		errno = ENAMETOOLONG;
+		return -1;
+	}
+	/* Determine the size of the multi-byte string in bytes. */
+	ins_size = strlen(ins);
+	/* Determine the length of the multi-byte string. */
+	s = ins;
+#if defined(HAVE_MBSINIT)
+	memset(&mbstate, 0, sizeof(mbstate));
+	ins_len = mbsrtowcs(NULL, (const char **)&s, 0, &mbstate);
+#ifdef __CYGWIN32__
+	if (!ins_len && *ins) {
+		/* Older Cygwin had broken mbsrtowcs() implementation. */
+		ins_len = strlen(ins);
+	}
+#endif
+#elif !defined(DJGPP)
+	ins_len = mbstowcs(NULL, s, 0);
+#else
+	/* Eeek!!! DJGPP has broken mbstowcs() implementation!!! */
+	ins_len = strlen(ins);
+#endif
+	if (ins_len == -1)
+		return ins_len;
+#ifdef HAVE_MBSINIT
+	if ((s != ins) || !mbsinit(&mbstate)) {
+#else
+	if (s != ins) {
+#endif
+		errno = EILSEQ;
+		return -1;
+	}
+	/* Add the NULL terminator. */
+	ins_len++;
+	if (!ucs) {
+		ucs_len = ins_len;
+		ucs = ntfs_malloc(ucs_len * sizeof(ntfschar));
+		if (!ucs)
+			return -1;
+	}
+#ifdef HAVE_MBSINIT
+	memset(&mbstate, 0, sizeof(mbstate));
+#else
+	mbtowc(NULL, NULL, 0);
+#endif
+	for (i = o = cnt = 0; i < ins_size; i += cnt, o++) {
+		/* Reallocate memory if necessary or abort. */
+		if (o >= ucs_len) {
+			ntfschar *tc;
+			if (ucs == *outs) {
+				errno = ENAMETOOLONG;
+				return -1;
+			}
+			/*
+			 * We will never get here but hey, it's only a bit of
+			 * extra code...
+			 */
+			ucs_len = (ucs_len * sizeof(ntfschar) + 64) & ~63;
+			tc = (ntfschar*)realloc(ucs, ucs_len);
+			if (!tc)
+				goto err_out;
+			ucs = tc;
+			ucs_len /= sizeof(ntfschar);
+		}
+		/* Convert the multibyte character to a wide character. */
+#ifdef HAVE_MBSINIT
+		cnt = mbrtowc(&wc, ins + i, ins_size - i, &mbstate);
+#else
+		cnt = mbtowc(&wc, ins + i, ins_size - i);
+#endif
+		if (!cnt)
+			break;
+		if (cnt == -1)
+			goto err_out;
+		if (cnt < -1) {
+			ntfs_log_trace("Eeek. cnt = %i\n", cnt);
+			errno = EINVAL;
+			goto err_out;
+		}
+		/* Make sure we are not overflowing the NTFS Unicode set. */
+		if ((unsigned long)wc >= (unsigned long)(1 <<
+				(8 * sizeof(ntfschar)))) {
+			errno = EILSEQ;
+			goto err_out;
+		}
+		/* Convert the CPU wide character to a LE Unicode character. */
+		ucs[o] = cpu_to_le16(wc);
+	}
+#ifdef HAVE_MBSINIT
+	/* Make sure we are back in the initial state. */
+	if (!mbsinit(&mbstate)) {
+		ntfs_log_trace("Eeek. mbstate not in initial state!\n");
+		errno = EILSEQ;
+		goto err_out;
+	}
+#endif
+	/* Now write the NULL character. */
+	ucs[o] = cpu_to_le16(L'\0');
+	if (*outs != ucs)
+		*outs = ucs;
+	return o;
+err_out:
+	if (ucs != *outs) {
+		int eo = errno;
+		free(ucs);
+		errno = eo;
+	}
+	return -1;
+}
+
+/**
+ * ntfs_upcase_table_build - build the default upcase table for NTFS
+ * @uc:		destination buffer where to store the built table
+ * @uc_len:	size of destination buffer in bytes
+ *
+ * ntfs_upcase_table_build() builds the default upcase table for NTFS and
+ * stores it in the caller supplied buffer @uc of size @uc_len.
+ *
+ * Note, @uc_len must be at least 128kiB in size or bad things will happen!
+ */
+void ntfs_upcase_table_build(ntfschar *uc, u32 uc_len)
+{
+	static int uc_run_table[][3] = { /* Start, End, Add */
+	{0x0061, 0x007B,  -32}, {0x0451, 0x045D, -80}, {0x1F70, 0x1F72,  74},
+	{0x00E0, 0x00F7,  -32}, {0x045E, 0x0460, -80}, {0x1F72, 0x1F76,  86},
+	{0x00F8, 0x00FF,  -32}, {0x0561, 0x0587, -48}, {0x1F76, 0x1F78, 100},
+	{0x0256, 0x0258, -205}, {0x1F00, 0x1F08,   8}, {0x1F78, 0x1F7A, 128},
+	{0x028A, 0x028C, -217}, {0x1F10, 0x1F16,   8}, {0x1F7A, 0x1F7C, 112},
+	{0x03AC, 0x03AD,  -38}, {0x1F20, 0x1F28,   8}, {0x1F7C, 0x1F7E, 126},
+	{0x03AD, 0x03B0,  -37}, {0x1F30, 0x1F38,   8}, {0x1FB0, 0x1FB2,   8},
+	{0x03B1, 0x03C2,  -32}, {0x1F40, 0x1F46,   8}, {0x1FD0, 0x1FD2,   8},
+	{0x03C2, 0x03C3,  -31}, {0x1F51, 0x1F52,   8}, {0x1FE0, 0x1FE2,   8},
+	{0x03C3, 0x03CC,  -32}, {0x1F53, 0x1F54,   8}, {0x1FE5, 0x1FE6,   7},
+	{0x03CC, 0x03CD,  -64}, {0x1F55, 0x1F56,   8}, {0x2170, 0x2180, -16},
+	{0x03CD, 0x03CF,  -63}, {0x1F57, 0x1F58,   8}, {0x24D0, 0x24EA, -26},
+	{0x0430, 0x0450,  -32}, {0x1F60, 0x1F68,   8}, {0xFF41, 0xFF5B, -32},
+	{0}
+	};
+	static int uc_dup_table[][2] = { /* Start, End */
+	{0x0100, 0x012F}, {0x01A0, 0x01A6}, {0x03E2, 0x03EF}, {0x04CB, 0x04CC},
+	{0x0132, 0x0137}, {0x01B3, 0x01B7}, {0x0460, 0x0481}, {0x04D0, 0x04EB},
+	{0x0139, 0x0149}, {0x01CD, 0x01DD}, {0x0490, 0x04BF}, {0x04EE, 0x04F5},
+	{0x014A, 0x0178}, {0x01DE, 0x01EF}, {0x04BF, 0x04BF}, {0x04F8, 0x04F9},
+	{0x0179, 0x017E}, {0x01F4, 0x01F5}, {0x04C1, 0x04C4}, {0x1E00, 0x1E95},
+	{0x018B, 0x018B}, {0x01FA, 0x0218}, {0x04C7, 0x04C8}, {0x1EA0, 0x1EF9},
+	{0}
+	};
+	static int uc_byte_table[][2] = { /* Offset, Value */
+	{0x00FF, 0x0178}, {0x01AD, 0x01AC}, {0x01F3, 0x01F1}, {0x0269, 0x0196},
+	{0x0183, 0x0182}, {0x01B0, 0x01AF}, {0x0253, 0x0181}, {0x026F, 0x019C},
+	{0x0185, 0x0184}, {0x01B9, 0x01B8}, {0x0254, 0x0186}, {0x0272, 0x019D},
+	{0x0188, 0x0187}, {0x01BD, 0x01BC}, {0x0259, 0x018F}, {0x0275, 0x019F},
+	{0x018C, 0x018B}, {0x01C6, 0x01C4}, {0x025B, 0x0190}, {0x0283, 0x01A9},
+	{0x0192, 0x0191}, {0x01C9, 0x01C7}, {0x0260, 0x0193}, {0x0288, 0x01AE},
+	{0x0199, 0x0198}, {0x01CC, 0x01CA}, {0x0263, 0x0194}, {0x0292, 0x01B7},
+	{0x01A8, 0x01A7}, {0x01DD, 0x018E}, {0x0268, 0x0197},
+	{0}
+	};
+	int i, r;
+
+	memset((char*)uc, 0, uc_len);
+	uc_len >>= 1;
+	if (uc_len > 65536)
+		uc_len = 65536;
+	for (i = 0; (u32)i < uc_len; i++)
+		uc[i] = i;
+	for (r = 0; uc_run_table[r][0]; r++)
+		for (i = uc_run_table[r][0]; i < uc_run_table[r][1]; i++)
+			uc[i] += uc_run_table[r][2];
+	for (r = 0; uc_dup_table[r][0]; r++)
+		for (i = uc_dup_table[r][0]; i < uc_dup_table[r][1]; i += 2)
+			uc[i + 1]--;
+	for (r = 0; uc_byte_table[r][0]; r++)
+		uc[uc_byte_table[r][0]] = uc_byte_table[r][1];
+}
+
+/**
+ * ntfs_str2ucs - convert a string to a valid NTFS file name
+ * @s:		input string
+ * @len:	length of output buffer in Unicode characters
+ *
+ * Convert the input @s string into the corresponding little endian,
+ * 2-byte Unicode string. The length of the converted string is less 
+ * or equal to the maximum length allowed by the NTFS format (255).
+ *
+ * If @s is NULL then return AT_UNNAMED.
+ *
+ * On success the function returns the Unicode string in an allocated 
+ * buffer and the caller is responsible to free it when it's not needed
+ * anymore.
+ *
+ * On error NULL is returned and errno is set to the error code.
+ */
+ntfschar *ntfs_str2ucs(const char *s, int *len)
+{
+	ntfschar *ucs = NULL;
+
+	if (s && ((*len = ntfs_mbstoucs(s, &ucs, 0)) == -1)) {
+		ntfs_log_perror("Couldn't convert '%s' to Unicode", s);
+		return NULL;
+	}
+	if (*len > NTFS_MAX_NAME_LEN) {
+		free(ucs);
+		errno = ENAMETOOLONG;
+		return NULL;
+	}
+	if (!ucs || !*len) {
+		ucs  = AT_UNNAMED;
+		*len = 0;
+	}
+	return ucs;
+}
+
+/**
+ * ntfs_ucsfree - free memory allocated by ntfs_str2ucs()
+ * @ucs		input string to be freed
+ *
+ * Free memory at @ucs and which was allocated by ntfs_str2ucs.
+ *
+ * Return value: none.
+ */
+void ntfs_ucsfree(ntfschar *ucs)
+{
+	if (ucs && (ucs != AT_UNNAMED))
+		free(ucs);
+}
+

libntfs-3g/unix_io.c

@@ -0,0 +1,327 @@
+/**
+ * unix_io.c - Unix style disk io functions. Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2000-2006 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#ifdef HAVE_STDIO_H
+#include <stdio.h>
+#endif
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+#ifdef HAVE_LINUX_FD_H
+#include <linux/fd.h>
+#endif
+
+#include "types.h"
+#include "mst.h"
+#include "debug.h"
+#include "device.h"
+#include "logging.h"
+#include "misc.h"
+
+#define DEV_FD(dev)	(*(int *)dev->d_private)
+
+/* Define to nothing if not present on this system. */
+#ifndef O_EXCL
+#	define O_EXCL 0
+#endif
+
+/**
+ * ntfs_device_unix_io_open - Open a device and lock it exclusively
+ * @dev:
+ * @flags:
+ *
+ * Description...
+ *
+ * Returns:
+ */
+static int ntfs_device_unix_io_open(struct ntfs_device *dev, int flags)
+{
+	struct flock flk;
+	struct stat sbuf;
+	int err;
+
+	if (NDevOpen(dev)) {
+		errno = EBUSY;
+		return -1;
+	}
+	dev->d_private = ntfs_malloc(sizeof(int));
+	if (!dev->d_private)
+		return -1;
+	/*
+	 * Open the device/file obtaining the file descriptor for exclusive
+	 * access (but only if mounting r/w).
+	 */ 
+	if ((flags & O_RDWR) == O_RDWR)
+		flags |= O_EXCL;
+	*(int*)dev->d_private = open(dev->d_name, flags);
+	if (*(int*)dev->d_private == -1) {
+		err = errno;
+		goto err_out;
+	}
+	/* Setup our read-only flag. */
+	if ((flags & O_RDWR) != O_RDWR)
+		NDevSetReadOnly(dev);
+	/* Acquire exclusive (mandatory) lock on the whole device. */
+	memset(&flk, 0, sizeof(flk));
+	if (NDevReadOnly(dev))
+		flk.l_type = F_RDLCK;
+	else
+		flk.l_type = F_WRLCK;
+	flk.l_whence = SEEK_SET;
+	flk.l_start = flk.l_len = 0LL;
+	if (fcntl(DEV_FD(dev), F_SETLK, &flk)) {
+		err = errno;
+		ntfs_log_debug("ntfs_device_unix_io_open: Could not lock %s for %s\n",
+				dev->d_name, NDevReadOnly(dev) ? "reading" : "writing");
+		if (close(DEV_FD(dev)))
+			ntfs_log_perror("ntfs_device_unix_io_open: Warning: Could not "
+					"close %s", dev->d_name);
+		goto err_out;
+	}
+	/* Determine if device is a block device or not, ignoring errors. */
+	if (!fstat(DEV_FD(dev), &sbuf) && S_ISBLK(sbuf.st_mode))
+		NDevSetBlock(dev);
+	/* Set our open flag. */
+	NDevSetOpen(dev);
+	return 0;
+err_out:
+	free(dev->d_private);
+	dev->d_private = NULL;
+	errno = err;
+	return -1;
+}
+
+/**
+ * ntfs_device_unix_io_close - Close the device, releasing the lock
+ * @dev:
+ *
+ * Description...
+ *
+ * Returns:
+ */
+static int ntfs_device_unix_io_close(struct ntfs_device *dev)
+{
+	struct flock flk;
+
+	if (!NDevOpen(dev)) {
+		errno = EBADF;
+		return -1;
+	}
+	if (NDevDirty(dev))
+		fsync(DEV_FD(dev));
+	/* Release exclusive (mandatory) lock on the whole device. */
+	memset(&flk, 0, sizeof(flk));
+	flk.l_type = F_UNLCK;
+	flk.l_whence = SEEK_SET;
+	flk.l_start = flk.l_len = 0LL;
+	if (fcntl(DEV_FD(dev), F_SETLK, &flk))
+		ntfs_log_perror("ntfs_device_unix_io_close: Warning: Could not "
+				"unlock %s", dev->d_name);
+	/* Close the file descriptor and clear our open flag. */
+	if (close(DEV_FD(dev)))
+		return -1;
+	NDevClearOpen(dev);
+	free(dev->d_private);
+	dev->d_private = NULL;
+	return 0;
+}
+
+/**
+ * ntfs_device_unix_io_seek - Seek to a place on the device
+ * @dev:
+ * @offset:
+ * @whence:
+ *
+ * Description...
+ *
+ * Returns:
+ */
+static s64 ntfs_device_unix_io_seek(struct ntfs_device *dev, s64 offset,
+		int whence)
+{
+	return lseek(DEV_FD(dev), offset, whence);
+}
+
+/**
+ * ntfs_device_unix_io_read - Read from the device, from the current location
+ * @dev:
+ * @buf:
+ * @count:
+ *
+ * Description...
+ *
+ * Returns:
+ */
+static s64 ntfs_device_unix_io_read(struct ntfs_device *dev, void *buf,
+		s64 count)
+{
+	return read(DEV_FD(dev), buf, count);
+}
+
+/**
+ * ntfs_device_unix_io_write - Write to the device, at the current location
+ * @dev:
+ * @buf:
+ * @count:
+ *
+ * Description...
+ *
+ * Returns:
+ */
+static s64 ntfs_device_unix_io_write(struct ntfs_device *dev, const void *buf,
+		s64 count)
+{
+	if (NDevReadOnly(dev)) {
+		errno = EROFS;
+		return -1;
+	}
+	NDevSetDirty(dev);
+	return write(DEV_FD(dev), buf, count);
+}
+
+/**
+ * ntfs_device_unix_io_pread - Perform a positioned read from the device
+ * @dev:
+ * @buf:
+ * @count:
+ * @offset:
+ *
+ * Description...
+ *
+ * Returns:
+ */
+static s64 ntfs_device_unix_io_pread(struct ntfs_device *dev, void *buf,
+		s64 count, s64 offset)
+{
+	return ntfs_pread(dev, offset, count, buf);
+}
+
+/**
+ * ntfs_device_unix_io_pwrite - Perform a positioned write to the device
+ * @dev:
+ * @buf:
+ * @count:
+ * @offset:
+ *
+ * Description...
+ *
+ * Returns:
+ */
+static s64 ntfs_device_unix_io_pwrite(struct ntfs_device *dev, const void *buf,
+		s64 count, s64 offset)
+{
+	if (NDevReadOnly(dev)) {
+		errno = EROFS;
+		return -1;
+	}
+	NDevSetDirty(dev);
+	return ntfs_pwrite(dev, offset, count, buf);
+}
+
+/**
+ * ntfs_device_unix_io_sync - Flush any buffered changes to the device
+ * @dev:
+ *
+ * Description...
+ *
+ * Returns:
+ */
+static int ntfs_device_unix_io_sync(struct ntfs_device *dev)
+{
+	if (!NDevReadOnly(dev) && NDevDirty(dev)) {
+		int res = fsync(DEV_FD(dev));
+		if (!res)
+			NDevClearDirty(dev);
+		return res;
+	}
+	return 0;
+}
+
+/**
+ * ntfs_device_unix_io_stat - Get information about the device
+ * @dev:
+ * @buf:
+ *
+ * Description...
+ *
+ * Returns:
+ */
+static int ntfs_device_unix_io_stat(struct ntfs_device *dev, struct stat *buf)
+{
+	return fstat(DEV_FD(dev), buf);
+}
+
+/**
+ * ntfs_device_unix_io_ioctl - Perform an ioctl on the device
+ * @dev:
+ * @request:
+ * @argp:
+ *
+ * Description...
+ *
+ * Returns:
+ */
+static int ntfs_device_unix_io_ioctl(struct ntfs_device *dev, int request,
+		void *argp)
+{
+	return ioctl(DEV_FD(dev), request, argp);
+}
+
+/**
+ * Device operations for working with unix style devices and files.
+ */
+struct ntfs_device_operations ntfs_device_unix_io_ops = {
+	.open		= ntfs_device_unix_io_open,
+	.close		= ntfs_device_unix_io_close,
+	.seek		= ntfs_device_unix_io_seek,
+	.read		= ntfs_device_unix_io_read,
+	.write		= ntfs_device_unix_io_write,
+	.pread		= ntfs_device_unix_io_pread,
+	.pwrite		= ntfs_device_unix_io_pwrite,
+	.sync		= ntfs_device_unix_io_sync,
+	.stat		= ntfs_device_unix_io_stat,
+	.ioctl		= ntfs_device_unix_io_ioctl,
+};

libntfs-3g/version.c

@@ -0,0 +1,40 @@
+/**
+ * version.c - Info about the NTFS library.  Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2005 Anton Altaparmakov
+ * Copyright (c) 2005 Richard Russon
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "version.h"
+
+/* FIXME: merge libntfs into the user space NTFS driver */
+static const char *libntfs_version_string = "22:0:0";
+
+/**
+ * ntfs_libntfs_version - query version number of the ntfs library libntfs
+ *
+ * Returns pointer to a text string representing the version of libntfs.
+ */
+const char *ntfs_libntfs_version(void)
+{
+	return libntfs_version_string;
+}

src/Makefile.am

@@ -0,0 +1,50 @@
+if REALLYSTATIC
+AM_LIBS		= $(top_builddir)/libntfs-3g/.libs/libntfs-3g.a
+AM_LFLAGS	= -static
+STATIC_LINK     = $(CC) $(AM_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@
+else
+AM_LIBS		= $(top_builddir)/libntfs-3g/libntfs-3g.la
+AM_LFLAGS	= $(all_libraries)
+LIBTOOL_LINK    = $(LIBTOOL) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@
+endif
+
+# Workaround to make REALLYSTATIC work with automake 1.5.
+LINK=$(STATIC_LINK) $(LIBTOOL_LINK)
+
+man_MANS		= ntfs-3g.8 
+
+MAINTAINERCLEANFILES	= Makefile.in
+
+linux_ntfsincludedir	= -I$(top_srcdir)/include/ntfs
+
+bin_PROGRAMS		= ntfs-3g
+
+# Set the include path.
+AM_CPPFLAGS		= -I$(top_srcdir)/include/ntfs-3g $(all_includes)
+
+ntfs_3g_SOURCES	= ntfs-3g.c utils.c utils.h
+ntfs_3g_LDADD	= $(AM_LIBS) $(FUSE_MODULE_LIBS)
+ntfs_3g_LDFLAGS	= $(AM_LFLAGS)
+ntfs_3g_CFLAGS	= $(FUSE_MODULE_CFLAGS) -DFUSE_USE_VERSION=25
+
+# Extra targets
+
+strip:	$(bin_PROGRAMS)
+	$(STRIP) $^
+
+libs:
+	(cd ../libntfs-3g && $(MAKE) libs) || exit 1;
+
+install-exec-hook:
+	$(INSTALL) -d $(DESTDIR)/sbin
+	$(LN_S) -f $(bindir)/ntfs-3g $(DESTDIR)/sbin/mount.ntfs-3g
+	ldconfig
+
+install-data-hook:
+	$(INSTALL) -d $(DESTDIR)$(man8dir)
+	$(LN_S) -f ntfs-3g.8 $(DESTDIR)$(man8dir)/mount.ntfs-3g.8
+
+uninstall-local:
+	$(RM) -f $(DESTDIR)/sbin/mount.ntfs-3g
+	$(RM) -f $(DESTDIR)$(man8dir)/mount.ntfs-3g.8
+

src/ntfs-3g.8.in

@@ -0,0 +1,198 @@
+.\" Copyright (c) 2005-2006 Yura Pakhuchiy.
+.\" Copyright (c) 2005 Richard Russon.
+.\" Copyright (c) 2006 Szabolcs Szakacsits.
+.\" This file may be copied under the terms of the GNU Public License.
+.\"
+.TH NTFS-3G 8 "October 2006" "ntfs-3g @VERSION@"
+.SH NAME
+ntfs-3g \- Third Generation NTFS Driver
+.SH SYNOPSIS
+.B ntfs-3g
+.I device mount_point
+[\fB\-o options\fR]
+.SH DESCRIPTION
+\fBntfs-3g\fR is an NTFS driver, which can
+create, remove, rename files, directories, hard links, and
+streams; it can read and write files, including 
+streams and sparse files; it can handle special files like 
+symbolic links, devices, and FIFOs; moreover it can also read
+compressed files.
+.SH OPTIONS
+Below is a summary of the options that \fBntfs-3g\fR accepts.
+.TP
+.B uid=, gid=, umask=
+Provide default owner, group, and access mode mask.
+These options work as documented in mount(8).  By
+default, the files and directories are owned by the user who 
+mounted the volume but everybody has full read, write and
+executable access, moreover browse permission to any directory. 
+If you want to use the currently limited permission
+handling then use these options together with the 
+.B default_permissions,
+.B fmask
+and
+.B dmask
+options. The usage of the
+.B default_permissions
+option is a must in such cases.
+.TP
+.B default_permissions
+By default FUSE doesn't check file access permissions, the
+filesystem is free to implement its access policy or leave it to
+the underlying file access mechanism (e.g. in case of network
+filesystems).  This option enables permission checking, restricting
+accesses based on file modes.  This option is usually useful
+together with the 
+.B allow_other
+mount option.
+.TP
+.B fmask=, dmask=
+Instead of specifying umask which applies both to
+files and directories, fmask applies only to files and
+mask only to directories.
+.TP
+.B ro
+Mount filesystem read\-only.
+.TP
+.B locale=
+You can set locale with this option which is often required to make 
+visible files with national charaters. It's useful if locale 
+environment variables are not set before partitions had been mounted 
+from /etc/fstab.
+.TP
+.B force
+Force mount even if the volume is scheduled for consistency check.
+Use this option with caution and preferably with the
+.B ro
+option.
+.TP
+.B show_sys_files
+Show the system files in directory listings. 
+Otherwise the default behaviour is to hide the system files.
+Please note that even when this option is specified, "$MFT"
+may not be visible due to a glibc bug.
+Furthermore, irrespectively of show_sys_files, all
+files are accessible by name, for example you can always do
+"ls \-l '$UpCase'".
+.TP
+.B allow_other
+This option overrides the security measure restricting file access
+to the user mounting the filesystem.  This option is by default only
+allowed to root, but this restriction can be removed with a
+configuration option described in the previous section.
+.TP
+.B large_read
+Issue large read requests.  This can improve performance for some
+filesystems, but can also degrade performance.  This option is mostly
+useful on 2.4.X kernels, as on 2.6 kernels requests size is
+automatically determined for optimum performance.
+.TP
+.B max_read=
+With this option the maximum size of read operations can be set.
+The default is infinite.  Note that the size of read requests is
+limited anyway to 32 pages (which is 128kbyte on i386).
+.TP
+.B silent
+Do nothing on chmod and chown operations, but do not return error. 
+This option is on by default.
+.TP
+.B no_def_opts
+By default ntfs-3g acts as "silent,allow_other" was passed to it,
+this option cancel this behaviour.
+.TP
+.B streams_interface=
+This option controls how the user can access Alternate Data Streams (ADS)
+or in other words, named data streams. It can be set
+to, one of \fBnone\fR, \fBwindows\fR or \fBxattr\fR. If the option is set to
+\fBnone\fR, the user will have no access to the named data streams.  If it's set
+to \fBwindows\fR, then the user can access them just like in Windows (eg. cat
+file:stream). If it's set to \fBxattr\fR, then the named data streams are
+mapped to xattrs and user can manipulate them using \fB{get,set}fattr\fR
+utilities. The default is \fBnone\fR.
+.TP
+.B debug
+Makes ntfs-3g to not detach from terminal and print a lot of debug output from
+libntfs-3g and FUSE.
+.TP
+.B no_detach
+Same as above but with less debug output.
+.SH ALTERNATE DATA STREAMS (ADS)
+All data on NTFS is stored in streams.  Every file has exactly one unnamed
+data stream and can have many named data streams.  The size of a file is the
+size of its unnamed data stream.  By default, \fBntfs-3g\fR will only read
+the unnamed data stream.
+.PP
+By using the options "streams_interface=windows", you will be able to read
+any named data streams, simply by specifying the stream's name after a colon.
+For example:
+.RS
+.sp
+cat some.mp3:artist
+.sp
+.RE
+Named data streams act like normals files, so you can read from them, write to
+them and even delete them (using rm).  You can list all the named data streams
+a file has by getting the "ntfs.streams.list" extended attribute.
+.SH EXAMPLES
+Mount /dev/hda1 to /mnt/windows:
+.RS
+.sp
+.B ntfs-3g /dev/hda1 /mnt/windows
+.sp
+.RE
+Read\-only mount /dev/hda5 to /home/user/mnt and make user with uid 1000 
+to be the owner of all files:
+.RS
+.sp
+.B ntfs-3g /dev/hda5 /home/user/mnt \-o ro,uid=1000
+.sp
+.RE
+/etc/fstab entry for the above:
+.RS
+.sp
+.B /dev/hda5 /home/user/mnt ntfs\-3g ro,uid=1000 0 0
+.sp
+.RE
+Unmount /mnt/windows:
+.RS
+.sp
+.B umount /mnt/windows
+.sp
+.RE
+You can also unmount /mnt/windows with fusermount:
+.RS
+.sp
+.B fusermount \-u /mnt/windows
+.sp
+.RE
+.SH KNOWN ISSUES
+Please see 
+.RS
+.sp
+http://www.ntfs-3g.org/support.html
+.sp
+.RE
+for all known issues.
+If you would find a new one in the latest release of
+this software then please send an email describing it
+according to the above page. You can also contact the 
+development team on the ntfs\-3g\-devel@lists.sf.net email 
+address anytime.
+.SH AUTHORS
+.B ntfs-3g 
+was based on and a major improvement to ntfsmount and libntfs which were
+written by Yura Pakhuchiy and the Linux-NTFS team. The improvements were 
+made, the ntfs-3g project was initiated and currently led by long time 
+Linux-NTFS team developer Szabolcs Szakacsits (szaka@sienet.hu) to revive
+the stalled open source development and project management.
+
+.SH THANKS
+Several people made heroic efforts, often over five or more
+years which resulted the ntfs-3g driver. Most importantly they are 
+Anton Altaparmakov, Richard Russon, Szabolcs Szakacsits, Yura Pakhuchiy,
+Yuval Fedel, and the author of the groundbreaking FUSE filesystem development 
+framework, Miklos Szeredi.
+.SH SEE ALSO
+.BR ntfsprogs (8),
+.BR attr (5),
+.BR getfattr (1)

src/utils.c

@@ -0,0 +1,966 @@
+/**
+ * utils.c - Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2002-2005 Richard Russon
+ * Copyright (c) 2003-2006 Anton Altaparmakov
+ * Copyright (c) 2003 Lode Leroy
+ *
+ * A set of shared functions for ntfs utilities
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef HAVE_STDIO_H
+#include <stdio.h>
+#endif
+#ifdef HAVE_STDARG_H
+#include <stdarg.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_LOCALE_H
+#include <locale.h>
+#endif
+#ifdef HAVE_LIBINTL_H
+#include <libintl.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_LIMITS_H
+#include <limits.h>
+#endif
+#ifdef HAVE_CTYPE_H
+#include <ctype.h>
+#endif
+
+#include "utils.h"
+#include "types.h"
+#include "volume.h"
+#include "debug.h"
+#include "dir.h"
+#include "version.h"
+#include "logging.h"
+#include "misc.h"
+
+const char *ntfs_home = 
+   "Ntfs-3g news, support and information:  http://www.ntfs-3g.org\n";
+const char *ntfs_gpl = "This program is free software, released under the GNU "
+	"General Public License\nand you are welcome to redistribute it under "
+	"certain conditions.  It comes with\nABSOLUTELY NO WARRANTY; for "
+	"details read the GNU General Public License to be\nfound in the file "
+	"\"COPYING\" distributed with this program, or online at:\n"
+	"http://www.gnu.org/copyleft/gpl.html\n";
+
+static const char *invalid_ntfs_msg =
+"The device '%s' doesn't have a valid NTFS.\n"
+"Maybe you selected the wrong device? Or the whole disk instead of a\n"
+"partition (e.g. /dev/hda, not /dev/hda1)? Or the other way around?\n";
+
+static const char *corrupt_volume_msg =
+"NTFS is inconsistent. Run chkdsk /f on Windows then reboot it TWICE!\n"
+"The usage of the /f parameter is very IMPORTANT! No modification was\n"
+"made to NTFS by this software.\n";
+
+static const char *hibernated_volume_msg =
+"The NTFS partition is hibernated. Please resume Windows and turned it \n"
+"off properly, so mounting could be done safely.\n";
+
+static const char *unclean_journal_msg =
+"Mount is denied because the NTFS journal file is unclean. Choices are:\n"
+" A) Shutdown Windows properly.\n"
+" B) Click the 'Safely Remove Hardware' icon in the Windows taskbar\n"
+"    notification area before disconnecting the device.\n"
+" C) Use 'Eject' from Windows Explorer to safely remove the device.\n"
+" D) If you ran chkdsk previously then boot Windows again which will\n"
+"    automatically initialize the journal.\n"
+" E) Run 'ntfsfix' on Linux which will reset the NTFS journal.\n"
+" F) Mount the volume read-only by using the 'ro' mount option.\n";
+
+static const char *opened_volume_msg =
+"Mount is denied because the NTFS volume is already exclusively opened.\n"
+"The volume may be already mounted, or another software may use it which\n"
+"could be identified for example by the help of the 'fuser' command.\n";
+
+/**
+ * utils_set_locale
+ */
+int utils_set_locale(void)
+{
+	const char *locale;
+
+	locale = setlocale(LC_ALL, "");
+	if (!locale) {
+		locale = setlocale(LC_ALL, NULL);
+		ntfs_log_error("Couldn't set local environment, using default '%s'.\n", locale);
+		return 1;
+	} else {
+		return 0;
+	}
+}
+
+ntfs_volume *utils_mount_volume(const char *volume, unsigned long flags,
+				BOOL force)
+{
+	ntfs_volume *vol;
+
+	vol = ntfs_mount(volume, flags);
+	if (!vol) {
+		
+		ntfs_log_perror("Failed to mount '%s'", volume);
+		
+		if (errno == EINVAL)
+			ntfs_log_error(invalid_ntfs_msg, volume);
+		else if (errno == EIO)
+			ntfs_log_error("%s", corrupt_volume_msg);
+		else if (errno == EPERM)
+			ntfs_log_error("%s", hibernated_volume_msg);
+		else if (errno == EOPNOTSUPP)
+			ntfs_log_error("%s", unclean_journal_msg);
+		else if (errno == EBUSY)
+			ntfs_log_error("%s", opened_volume_msg);
+		
+		return NULL;
+	}
+
+	if (vol->flags & VOLUME_IS_DIRTY) {
+		if (!force) {
+			ntfs_log_error("Volume is scheduled for check.\nPlease "
+				       "boot into Windows TWICE, or use the "
+				       "'force' mount option.\n");
+			ntfs_umount(vol, FALSE);
+			
+			return NULL;
+		} else
+			ntfs_log_error("WARNING: Dirty volume mount was forced "
+				       "by the 'force' mount option.\n");
+	}
+	
+	return vol;
+}
+
+/**
+ * utils_parse_size - Convert a string representing a size
+ * @value:  String to be parsed
+ * @size:   Parsed size
+ * @scale:  Whether or not to allow a suffix to scale the value
+ *
+ * Read a string and convert it to a number.  Strings may be suffixed to scale
+ * them.  Any number without a suffix is assumed to be in bytes.
+ *
+ * Suffix  Description  Multiple
+ *  [tT]    Terabytes     10^12
+ *  [gG]    Gigabytes     10^9
+ *  [mM]    Megabytes     10^6
+ *  [kK]    Kilobytes     10^3
+ *
+ * Notes:
+ *     Only the first character of the suffix is read.
+ *     The multipliers are decimal thousands, not binary: 1000, not 1024.
+ *     If parse_size fails, @size will not be changed
+ *
+ * Return:  1  Success
+ *	    0  Error, the string was malformed
+ */
+int utils_parse_size(const char *value, s64 *size, BOOL scale)
+{
+	long long result;
+	char *suffix = NULL;
+
+	if (!value || !size) {
+		errno = EINVAL;
+		return 0;
+	}
+
+	result = strtoll(value, &suffix, 0);
+	if (result < 0 || errno == ERANGE) {
+		ntfs_log_error("Invalid size '%s'.\n", value);
+		return 0;
+	}
+
+	if (!suffix) {
+		ntfs_log_error("Internal error, strtoll didn't return a suffix.\n");
+		return 0;
+	}
+
+	if (scale) {
+		switch (suffix[0]) {
+			case 't': case 'T': result *= 1000;
+			case 'g': case 'G': result *= 1000;
+			case 'm': case 'M': result *= 1000;
+			case 'k': case 'K': result *= 1000;
+			case '-': case 0:
+				break;
+			default:
+				ntfs_log_error("Invalid size suffix '%s'.  Use T, G, M, or K.\n", suffix);
+				return 0;
+		}
+	} else {
+		if ((suffix[0] != '-') && (suffix[0] != 0)) {
+			ntfs_log_error("Invalid number '%.*s'.\n", (int)(suffix - value + 1), value);
+			return 0;
+		}
+	}
+
+	*size = result;
+	return 1;
+}
+
+/**
+ * utils_parse_range - Convert a string representing a range of numbers
+ * @string:  The string to be parsed
+ * @start:   The beginning of the range will be stored here
+ * @finish:  The end of the range will be stored here
+ *
+ * Read a string of the form n-m.  If the lower end is missing, zero will be
+ * substituted.  If the upper end is missing LONG_MAX will be used.  If the
+ * string cannot be parsed correctly, @start and @finish will not be changed.
+ *
+ * Return:  1  Success, a valid string was found
+ *	    0  Error, the string was not a valid range
+ */
+int utils_parse_range(const char *string, s64 *start, s64 *finish, BOOL scale)
+{
+	s64 a, b;
+	char *middle;
+
+	if (!string || !start || !finish) {
+		errno = EINVAL;
+		return 0;
+	}
+
+	middle = strchr(string, '-');
+	if (string == middle) {
+		ntfs_log_debug("Range has no beginning, defaulting to 0.\n");
+		a = 0;
+	} else {
+		if (!utils_parse_size(string, &a, scale))
+			return 0;
+	}
+
+	if (middle) {
+		if (middle[1] == 0) {
+			b = LONG_MAX;		// XXX ULLONG_MAX
+			ntfs_log_debug("Range has no end, defaulting to %lld.\n", b);
+		} else {
+			if (!utils_parse_size(middle+1, &b, scale))
+				return 0;
+		}
+	} else {
+		b = a;
+	}
+
+	ntfs_log_debug("Range '%s' = %lld - %lld\n", string, a, b);
+
+	*start  = a;
+	*finish = b;
+	return 1;
+}
+
+/**
+ * find_attribute - Find an attribute of the given type
+ * @type:  An attribute type, e.g. AT_FILE_NAME
+ * @ctx:   A search context, created using ntfs_get_attr_search_ctx
+ *
+ * Using the search context to keep track, find the first/next occurrence of a
+ * given attribute type.
+ *
+ * N.B.  This will return a pointer into @mft.  As long as the search context
+ *       has been created without an inode, it won't overflow the buffer.
+ *
+ * Return:  Pointer  Success, an attribute was found
+ *	    NULL     Error, no matching attributes were found
+ */
+ATTR_RECORD * find_attribute(const ATTR_TYPES type, ntfs_attr_search_ctx *ctx)
+{
+	if (!ctx) {
+		errno = EINVAL;
+		return NULL;
+	}
+
+	if (ntfs_attr_lookup(type, NULL, 0, 0, 0, NULL, 0, ctx) != 0) {
+		ntfs_log_debug("find_attribute didn't find an attribute of type: 0x%02x.\n", type);
+		return NULL;	/* None / no more of that type */
+	}
+
+	ntfs_log_debug("find_attribute found an attribute of type: 0x%02x.\n", type);
+	return ctx->attr;
+}
+
+/**
+ * find_first_attribute - Find the first attribute of a given type
+ * @type:  An attribute type, e.g. AT_FILE_NAME
+ * @mft:   A buffer containing a raw MFT record
+ *
+ * Search through a raw MFT record for an attribute of a given type.
+ * The return value is a pointer into the MFT record that was supplied.
+ *
+ * N.B.  This will return a pointer into @mft.  The pointer won't stray outside
+ *       the buffer, since we created the search context without an inode.
+ *
+ * Return:  Pointer  Success, an attribute was found
+ *	    NULL     Error, no matching attributes were found
+ */
+ATTR_RECORD * find_first_attribute(const ATTR_TYPES type, MFT_RECORD *mft)
+{
+	ntfs_attr_search_ctx *ctx;
+	ATTR_RECORD *rec;
+
+	if (!mft) {
+		errno = EINVAL;
+		return NULL;
+	}
+
+	ctx = ntfs_attr_get_search_ctx(NULL, mft);
+	if (!ctx) {
+		ntfs_log_error("Couldn't create a search context.\n");
+		return NULL;
+	}
+
+	rec = find_attribute(type, ctx);
+	ntfs_attr_put_search_ctx(ctx);
+	if (rec)
+		ntfs_log_debug("find_first_attribute: found attr of type 0x%02x.\n", type);
+	else
+		ntfs_log_debug("find_first_attribute: didn't find attr of type 0x%02x.\n", type);
+	return rec;
+}
+
+/**
+ * utils_inode_get_name
+ *
+ * using inode
+ * get filename
+ * add name to list
+ * get parent
+ * if parent is 5 (/) stop
+ * get inode of parent
+ */
+int utils_inode_get_name(ntfs_inode *inode, char *buffer, int bufsize)
+{
+	// XXX option: names = posix/win32 or dos
+	// flags: path, filename, or both
+	const int max_path = 20;
+
+	ntfs_volume *vol;
+	ntfs_attr_search_ctx *ctx;
+	ATTR_RECORD *rec;
+	FILE_NAME_ATTR *attr;
+	int name_space;
+	MFT_REF parent = FILE_root;
+	char *names[max_path + 1];// XXX ntfs_malloc? and make max bigger?
+	int i, len, offset = 0;
+
+	if (!inode || !buffer) {
+		errno = EINVAL;
+		return 0;
+	}
+
+	vol = inode->vol;
+
+	//ntfs_log_debug("sizeof(char*) = %d, sizeof(names) = %d\n", sizeof(char*), sizeof(names));
+	memset(names, 0, sizeof(names));
+
+	for (i = 0; i < max_path; i++) {
+
+		ctx = ntfs_attr_get_search_ctx(inode, NULL);
+		if (!ctx) {
+			ntfs_log_error("Couldn't create a search context.\n");
+			return 0;
+		}
+
+		//ntfs_log_debug("i = %d, inode = %p (%lld)\n", i, inode, inode->mft_no);
+
+		name_space = 4;
+		while ((rec = find_attribute(AT_FILE_NAME, ctx))) {
+			/* We know this will always be resident. */
+			attr = (FILE_NAME_ATTR *) ((char *) rec + le16_to_cpu(rec->value_offset));
+
+			if (attr->file_name_type > name_space) { //XXX find the ...
+				continue;
+			}
+
+			name_space = attr->file_name_type;
+			parent     = le64_to_cpu(attr->parent_directory);
+
+			if (names[i]) {
+				free(names[i]);
+				names[i] = NULL;
+			}
+
+			if (ntfs_ucstombs(attr->file_name, attr->file_name_length,
+			    &names[i], 0) < 0) {
+				char *temp;
+				ntfs_log_error("Couldn't translate filename to current locale.\n");
+				temp = ntfs_malloc(30);
+				if (!temp)
+					return 0;
+				snprintf(temp, 30, "<MFT%llu>", (unsigned
+						long long)inode->mft_no);
+				names[i] = temp;
+			}
+
+			//ntfs_log_debug("names[%d] %s\n", i, names[i]);
+			//ntfs_log_debug("parent = %lld\n", MREF(parent));
+		}
+
+		ntfs_attr_put_search_ctx(ctx);
+
+		if (i > 0)			/* Don't close the original inode */
+			ntfs_inode_close(inode);
+
+		if (MREF(parent) == FILE_root) {	/* The root directory, stop. */
+			//ntfs_log_debug("inode 5\n");
+			break;
+		}
+
+		inode = ntfs_inode_open(vol, parent);
+		if (!inode) {
+			ntfs_log_error("Couldn't open inode %llu.\n",
+					(unsigned long long)MREF(parent));
+			break;
+		}
+	}
+
+	if (i >= max_path) {
+		/* If we get into an infinite loop, we'll end up here. */
+		ntfs_log_error("The directory structure is too deep (over %d) nested directories.\n", max_path);
+		return 0;
+	}
+
+	/* Assemble the names in the correct order. */
+	for (i = max_path; i >= 0; i--) {
+		if (!names[i])
+			continue;
+
+		len = snprintf(buffer + offset, bufsize - offset, "%c%s", PATH_SEP, names[i]);
+		if (len >= (bufsize - offset)) {
+			ntfs_log_error("Pathname was truncated.\n");
+			break;
+		}
+
+		offset += len;
+	}
+
+	/* Free all the allocated memory */
+	for (i = 0; i < max_path; i++)
+		free(names[i]);
+
+	ntfs_log_debug("Pathname: %s\n", buffer);
+
+	return 1;
+}
+
+/**
+ * utils_attr_get_name
+ */
+int utils_attr_get_name(ntfs_volume *vol, ATTR_RECORD *attr, char *buffer, int bufsize)
+{
+	int len, namelen;
+	char *name;
+	ATTR_DEF *attrdef;
+
+	// flags: attr, name, or both
+	if (!attr || !buffer) {
+		errno = EINVAL;
+		return 0;
+	}
+
+	attrdef = ntfs_attr_find_in_attrdef(vol, attr->type);
+	if (attrdef) {
+		name    = NULL;
+		namelen = ntfs_ucsnlen(attrdef->name, sizeof(attrdef->name));
+		if (ntfs_ucstombs(attrdef->name, namelen, &name, 0) < 0) {
+			ntfs_log_error("Couldn't translate attribute type to current locale.\n");
+			// <UNKNOWN>?
+			return 0;
+		}
+		len = snprintf(buffer, bufsize, "%s", name);
+	} else {
+		ntfs_log_error("Unknown attribute type 0x%02x\n", attr->type);
+		len = snprintf(buffer, bufsize, "<UNKNOWN>");
+	}
+
+	if (len >= bufsize) {
+		ntfs_log_error("Attribute type was truncated.\n");
+		return 0;
+	}
+
+	if (!attr->name_length) {
+		return 0;
+	}
+
+	buffer  += len;
+	bufsize -= len;
+
+	name    = NULL;
+	namelen = attr->name_length;
+	if (ntfs_ucstombs((ntfschar *)((char *)attr + attr->name_offset),
+	    namelen, &name, 0) < 0) {
+		ntfs_log_error("Couldn't translate attribute name to current locale.\n");
+		// <UNKNOWN>?
+		len = snprintf(buffer, bufsize, "<UNKNOWN>");
+		return 0;
+	}
+
+	len = snprintf(buffer, bufsize, "(%s)", name);
+	free(name);
+
+	if (len >= bufsize) {
+		ntfs_log_error("Attribute name was truncated.\n");
+		return 0;
+	}
+
+	return 0;
+}
+
+/**
+ * utils_cluster_in_use - Determine if a cluster is in use
+ * @vol:  An ntfs volume obtained from ntfs_mount
+ * @lcn:  The Logical Cluster Number to test
+ *
+ * The metadata file $Bitmap has one binary bit representing each cluster on
+ * disk.  The bit will be set for each cluster that is in use.  The function
+ * reads the relevant part of $Bitmap into a buffer and tests the bit.
+ *
+ * This function has a static buffer in which it caches a section of $Bitmap.
+ * If the lcn, being tested, lies outside the range, the buffer will be
+ * refreshed.
+ *
+ * Return:  1  Cluster is in use
+ *	    0  Cluster is free space
+ *	   -1  Error occurred
+ */
+int utils_cluster_in_use(ntfs_volume *vol, long long lcn)
+{
+	static unsigned char buffer[512];
+	static long long bmplcn = -sizeof(buffer) - 1;	/* Which bit of $Bitmap is in the buffer */
+
+	int byte, bit;
+	ntfs_attr *attr;
+
+	if (!vol) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	/* Does lcn lie in the section of $Bitmap we already have cached? */
+	if ((lcn < bmplcn) || (lcn >= (bmplcn + (sizeof(buffer) << 3)))) {
+		ntfs_log_debug("Bit lies outside cache.\n");
+		attr = ntfs_attr_open(vol->lcnbmp_ni, AT_DATA, AT_UNNAMED, 0);
+		if (!attr) {
+			ntfs_log_perror("Couldn't open $Bitmap");
+			return -1;
+		}
+
+		/* Mark the buffer as in use, in case the read is shorter. */
+		memset(buffer, 0xFF, sizeof(buffer));
+		bmplcn = lcn & (~((sizeof(buffer) << 3) - 1));
+
+		if (ntfs_attr_pread(attr, (bmplcn>>3), sizeof(buffer), buffer) < 0) {
+			ntfs_log_perror("Couldn't read $Bitmap");
+			ntfs_attr_close(attr);
+			return -1;
+		}
+
+		ntfs_log_debug("Reloaded bitmap buffer.\n");
+		ntfs_attr_close(attr);
+	}
+
+	bit  = 1 << (lcn & 7);
+	byte = (lcn >> 3) & (sizeof(buffer) - 1);
+	ntfs_log_debug("cluster = %lld, bmplcn = %lld, byte = %d, bit = %d, in use %d\n", lcn, bmplcn, byte, bit, buffer[byte] & bit);
+
+	return (buffer[byte] & bit);
+}
+
+/**
+ * utils_mftrec_in_use - Determine if a MFT Record is in use
+ * @vol:   An ntfs volume obtained from ntfs_mount
+ * @mref:  MFT Reference (inode number)
+ *
+ * The metadata file $BITMAP has one binary bit representing each record in the
+ * MFT.  The bit will be set for each record that is in use.  The function
+ * reads the relevant part of $BITMAP into a buffer and tests the bit.
+ *
+ * This function has a static buffer in which it caches a section of $BITMAP.
+ * If the mref, being tested, lies outside the range, the buffer will be
+ * refreshed.
+ *
+ * Return:  1  MFT Record is in use
+ *	    0  MFT Record is unused
+ *	   -1  Error occurred
+ */
+int utils_mftrec_in_use(ntfs_volume *vol, MFT_REF mref)
+{
+	static u8 buffer[512];
+	static s64 bmpmref = -sizeof(buffer) - 1; /* Which bit of $BITMAP is in the buffer */
+
+	int byte, bit;
+
+	if (!vol) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	ntfs_log_trace("entering\n");
+	/* Does mref lie in the section of $Bitmap we already have cached? */
+	if (((s64)MREF(mref) < bmpmref) || ((s64)MREF(mref) >= (bmpmref +
+			(sizeof(buffer) << 3)))) {
+		ntfs_log_debug("Bit lies outside cache.\n");
+
+		/* Mark the buffer as not in use, in case the read is shorter. */
+		memset(buffer, 0, sizeof(buffer));
+		bmpmref = mref & (~((sizeof(buffer) << 3) - 1));
+
+		if (ntfs_attr_pread(vol->mftbmp_na, (bmpmref>>3), sizeof(buffer), buffer) < 0) {
+			ntfs_log_perror("Couldn't read $MFT/$BITMAP");
+			return -1;
+		}
+
+		ntfs_log_debug("Reloaded bitmap buffer.\n");
+	}
+
+	bit  = 1 << (mref & 7);
+	byte = (mref >> 3) & (sizeof(buffer) - 1);
+	ntfs_log_debug("cluster = %lld, bmpmref = %lld, byte = %d, bit = %d, in use %d\n", mref, bmpmref, byte, bit, buffer[byte] & bit);
+
+	return (buffer[byte] & bit);
+}
+
+/**
+ * __metadata
+ */
+static int __metadata(ntfs_volume *vol, u64 num)
+{
+	if (num <= FILE_UpCase)
+		return 1;
+	if (!vol)
+		return -1;
+	if ((vol->major_ver == 3) && (num == FILE_Extend))
+		return 1;
+
+	return 0;
+}
+
+/**
+ * utils_is_metadata - Determine if an inode represents a metadata file
+ * @inode:  An ntfs inode to be tested
+ *
+ * A handful of files in the volume contain filesystem data - metadata.
+ * They can be identified by their inode number (offset in MFT/$DATA) or by
+ * their parent.
+ *
+ * Return:  1  inode is a metadata file
+ *	    0  inode is not a metadata file
+ *	   -1  Error occurred
+ */
+int utils_is_metadata(ntfs_inode *inode)
+{
+	ntfs_volume *vol;
+	ATTR_RECORD *rec;
+	FILE_NAME_ATTR *attr;
+	MFT_RECORD *file;
+	u64 num;
+
+	if (!inode) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	vol = inode->vol;
+	if (!vol)
+		return -1;
+
+	num = inode->mft_no;
+	if (__metadata(vol, num) == 1)
+		return 1;
+
+	file = inode->mrec;
+	if (file && (file->base_mft_record != 0)) {
+		num = MREF(file->base_mft_record);
+		if (__metadata(vol, num) == 1)
+			return 1;
+	}
+	file = inode->mrec;
+
+	rec = find_first_attribute(AT_FILE_NAME, inode->mrec);
+	if (!rec)
+		return -1;
+
+	/* We know this will always be resident. */
+	attr = (FILE_NAME_ATTR *) ((char *) rec + le16_to_cpu(rec->value_offset));
+
+	num = MREF(attr->parent_directory);
+	if ((num != FILE_root) && (__metadata(vol, num) == 1))
+		return 1;
+
+	return 0;
+}
+
+/**
+ * utils_dump_mem - Display a block of memory in hex and ascii
+ * @buf:     Buffer to be displayed
+ * @start:   Offset into @buf to start from
+ * @length:  Number of bytes to display
+ * @flags:   Options to change the style of the output
+ *
+ * Display a block of memory in a tradition hex-dump manner.
+ * Optionally the ascii part can be turned off.
+ *
+ * The flags, described fully in utils.h, default to 0 (DM_DEFAULTS).
+ * Examples are: DM_INDENT (indent the output by one tab); DM_RED (colour the
+ * output); DM_NO_ASCII (only print the hex values).
+ */
+void utils_dump_mem(void *buf, int start, int length, int flags)
+{
+	int off, i, s, e, col;
+	u8 *mem = buf;
+
+	s =  start                & ~15;	// round down
+	e = (start + length + 15) & ~15;	// round up
+
+	for (off = s; off < e; off += 16) {
+		col = 30;
+		if (flags & DM_RED)
+			col += 1;
+		if (flags & DM_GREEN)
+			col += 2;
+		if (flags & DM_BLUE)
+			col += 4;
+		if (flags & DM_INDENT)
+			ntfs_log_debug("\t");
+		if (flags & DM_BOLD)
+			ntfs_log_debug("\e[01m");
+		if (flags & (DM_RED | DM_BLUE | DM_GREEN | DM_BOLD))
+			ntfs_log_debug("\e[%dm", col);
+		if (off == s)
+			ntfs_log_debug("%6.6x ", start);
+		else
+			ntfs_log_debug("%6.6x ", off);
+
+		for (i = 0; i < 16; i++) {
+			if ((i == 8) && (!(flags & DM_NO_DIVIDER)))
+				ntfs_log_debug(" -");
+			if (((off+i) >= start) && ((off+i) < (start+length)))
+				ntfs_log_debug(" %02X", mem[off+i]);
+			else
+				ntfs_log_debug("   ");
+		}
+		if (!(flags & DM_NO_ASCII)) {
+			ntfs_log_debug("  ");
+			for (i = 0; i < 16; i++) {
+				if (((off+i) < start) || ((off+i) >= (start+length)))
+					ntfs_log_debug(" ");
+				else if (isprint(mem[off + i]))
+					ntfs_log_debug("%c", mem[off + i]);
+				else
+					ntfs_log_debug(".");
+			}
+		}
+		if (flags & (DM_RED | DM_BLUE | DM_GREEN | DM_BOLD))
+			ntfs_log_debug("\e[0m");
+		ntfs_log_debug("\n");
+	}
+}
+
+
+/**
+ * mft_get_search_ctx
+ */
+struct mft_search_ctx * mft_get_search_ctx(ntfs_volume *vol)
+{
+	struct mft_search_ctx *ctx;
+
+	if (!vol) {
+		errno = EINVAL;
+		return NULL;
+	}
+
+	ctx = calloc(1, sizeof *ctx);
+
+	ctx->mft_num = -1;
+	ctx->vol = vol;
+
+	return ctx;
+}
+
+/**
+ * mft_put_search_ctx
+ */
+void mft_put_search_ctx(struct mft_search_ctx *ctx)
+{
+	if (!ctx)
+		return;
+	if (ctx->inode)
+		ntfs_inode_close(ctx->inode);
+	free(ctx);
+}
+
+/**
+ * mft_next_record
+ */
+int mft_next_record(struct mft_search_ctx *ctx)
+{
+	s64 nr_mft_records;
+	ATTR_RECORD *attr10 = NULL;
+	ATTR_RECORD *attr20 = NULL;
+	ATTR_RECORD *attr80 = NULL;
+	ntfs_attr_search_ctx *attr_ctx;
+
+	if (!ctx) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	if (ctx->inode) {
+		ntfs_inode_close(ctx->inode);
+		ctx->inode = NULL;
+	}
+
+	nr_mft_records = ctx->vol->mft_na->initialized_size >>
+			ctx->vol->mft_record_size_bits;
+
+	for (ctx->mft_num++; (s64)ctx->mft_num < nr_mft_records; ctx->mft_num++) {
+		int in_use;
+
+		ctx->flags_match = 0;
+		in_use = utils_mftrec_in_use(ctx->vol, (MFT_REF) ctx->mft_num);
+		if (in_use == -1) {
+			ntfs_log_error("Error reading inode %llu.  Aborting.\n",
+					(unsigned long long)ctx->mft_num);
+			return -1;
+		}
+
+		if (in_use) {
+			ctx->flags_match |= FEMR_IN_USE;
+
+			ctx->inode = ntfs_inode_open(ctx->vol, (MFT_REF) ctx->mft_num);
+			if (ctx->inode == NULL) {
+				ntfs_log_error("Error reading inode %llu.\n", (unsigned
+						long long) ctx->mft_num);
+				continue;
+			}
+
+			attr10 = find_first_attribute(AT_STANDARD_INFORMATION, ctx->inode->mrec);
+			attr20 = find_first_attribute(AT_ATTRIBUTE_LIST,       ctx->inode->mrec);
+			attr80 = find_first_attribute(AT_DATA, ctx->inode->mrec);
+
+			if (attr10)
+				ctx->flags_match |= FEMR_BASE_RECORD;
+			else
+				ctx->flags_match |= FEMR_NOT_BASE_RECORD;
+
+			if (attr20)
+				ctx->flags_match |= FEMR_BASE_RECORD;
+
+			if (attr80)
+				ctx->flags_match |= FEMR_FILE;
+
+			if (ctx->flags_search & FEMR_DIR) {
+				attr_ctx = ntfs_attr_get_search_ctx(ctx->inode, NULL);
+				if (attr_ctx) {
+					if (ntfs_attr_lookup(AT_INDEX_ROOT, NTFS_INDEX_I30, 4, 0, 0, NULL, 0, attr_ctx) == 0)
+						ctx->flags_match |= FEMR_DIR;
+
+					ntfs_attr_put_search_ctx(attr_ctx);
+				} else {
+					ntfs_log_error("Couldn't create a search context.\n");
+					return -1;
+				}
+			}
+
+			switch (utils_is_metadata(ctx->inode)) {
+				case 1: ctx->flags_match |= FEMR_METADATA;     break;
+				case 0: ctx->flags_match |= FEMR_NOT_METADATA; break;
+				default:
+					ctx->flags_match |= FEMR_NOT_METADATA; break;
+					//ntfs_log_error("Error reading inode %lld.\n", ctx->mft_num);
+					//return -1;
+			}
+
+		} else {		// !in_use
+			ntfs_attr *mft;
+
+			ctx->flags_match |= FEMR_NOT_IN_USE;
+
+			ctx->inode = calloc(1, sizeof(*ctx->inode));
+			if (!ctx->inode) {
+				ntfs_log_error("Out of memory.  Aborting.\n");
+				return -1;
+			}
+
+			ctx->inode->mft_no = ctx->mft_num;
+			ctx->inode->vol    = ctx->vol;
+			ctx->inode->mrec   = ntfs_malloc(ctx->vol->mft_record_size);
+			if (!ctx->inode->mrec) {
+				free(ctx->inode); // == ntfs_inode_close
+				return -1;
+			}
+
+			mft = ntfs_attr_open(ctx->vol->mft_ni, AT_DATA,
+					AT_UNNAMED, 0);
+			if (!mft) {
+				ntfs_log_perror("Couldn't open $MFT/$DATA");
+				// free / close
+				return -1;
+			}
+
+			if (ntfs_attr_pread(mft, ctx->vol->mft_record_size * ctx->mft_num, ctx->vol->mft_record_size, ctx->inode->mrec) < ctx->vol->mft_record_size) {
+				ntfs_log_perror("Couldn't read MFT Record %llu",
+					(unsigned long long) ctx->mft_num);
+				// free / close
+				ntfs_attr_close(mft);
+				return -1;
+			}
+
+			ntfs_attr_close(mft);
+		}
+
+		if (ctx->flags_match & ctx->flags_search) {
+			break;
+		}
+
+		if (ntfs_inode_close(ctx->inode)) {
+			ntfs_log_error("Error closing inode %llu.\n",
+					(unsigned long long)ctx->mft_num);
+			return -errno;
+		}
+
+		ctx->inode = NULL;
+	}
+
+	return (ctx->inode == NULL);
+}
+
+

src/utils.h

@@ -0,0 +1,99 @@
+/*
+ * utils.h - Originated from the Linux-NTFS project.
+ *
+ * Copyright (c) 2002-2005 Richard Russon
+ * Copyright (c) 2004 Anton Altaparmakov
+ *
+ * A set of shared functions for ntfs utilities
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the NTFS-3G
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _NTFS_UTILS_H_
+#define _NTFS_UTILS_H_
+
+#include "config.h"
+
+#include "types.h"
+#include "layout.h"
+#include "volume.h"
+
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#ifdef HAVE_STDARG_H
+#include <stdarg.h>
+#endif
+
+extern const char *ntfs_home;
+extern const char *ntfs_gpl;
+
+int utils_set_locale(void);
+int utils_parse_size(const char *value, s64 *size, BOOL scale);
+int utils_parse_range(const char *string, s64 *start, s64 *finish, BOOL scale);
+int utils_inode_get_name(ntfs_inode *inode, char *buffer, int bufsize);
+int utils_attr_get_name(ntfs_volume *vol, ATTR_RECORD *attr, char *buffer, int bufsize);
+int utils_cluster_in_use(ntfs_volume *vol, long long lcn);
+int utils_mftrec_in_use(ntfs_volume *vol, MFT_REF mref);
+int utils_is_metadata(ntfs_inode *inode);
+void utils_dump_mem(void *buf, int start, int length, int flags);
+
+ATTR_RECORD * find_attribute(const ATTR_TYPES type, ntfs_attr_search_ctx *ctx);
+ATTR_RECORD * find_first_attribute(const ATTR_TYPES type, MFT_RECORD *mft);
+
+int utils_valid_device(const char *name, int force);
+ntfs_volume * utils_mount_volume(const char *device, unsigned long flags, BOOL force);
+
+/**
+ * defines...
+ * if *not in use* then the other flags are ignored?
+ */
+#define FEMR_IN_USE		(1 << 0)
+#define FEMR_NOT_IN_USE		(1 << 1)
+#define FEMR_FILE		(1 << 2)		// $DATA
+#define FEMR_DIR		(1 << 3)		// $INDEX_ROOT, "$I30"
+#define FEMR_METADATA		(1 << 4)
+#define FEMR_NOT_METADATA	(1 << 5)
+#define FEMR_BASE_RECORD	(1 << 6)
+#define FEMR_NOT_BASE_RECORD	(1 << 7)
+#define FEMR_ALL_RECORDS	0xFF
+
+/**
+ * struct mft_search_ctx
+ */
+struct mft_search_ctx {
+	int flags_search;
+	int flags_match;
+	ntfs_inode *inode;
+	ntfs_volume *vol;
+	u64 mft_num;
+};
+
+struct mft_search_ctx * mft_get_search_ctx(ntfs_volume *vol);
+void mft_put_search_ctx(struct mft_search_ctx *ctx);
+int mft_next_record(struct mft_search_ctx *ctx);
+
+// Flags for dump mem
+#define DM_DEFAULTS	0
+#define DM_NO_ASCII	(1 << 0)
+#define DM_NO_DIVIDER	(1 << 1)
+#define DM_INDENT	(1 << 2)
+#define DM_RED		(1 << 3)
+#define DM_GREEN	(1 << 4)
+#define DM_BLUE		(1 << 5)
+#define DM_BOLD		(1 << 6)
+
+#endif /* _NTFS_UTILS_H_ */