On linux the request argument of ioctl() is defined as an unsigned long,
but the fuse protocol squashes it into a signed int. As a consequence
the value received by ntfs-3g may appear as negative and different from
the value defined by the corresponding macro.
So define the request argument as unsigned long in ntfs-3g. It has
however to be fed as unsigned from fuse until the fuse protocol is
updated.
As similar reparse tags are being used for accessing OneDrive files
and directories, a similar policy has to be used for accessing them.
Until giving full access to OneDrive files with a local copy is
mature enough to have it processed internally, it is safer to have
it delegated to an external plugin. This reverts [4f450a]
When permissions are enabled and setxattr() is rejected, an error
must be returned even though the option silent is set. This is needed
for "cp -p" to know it has to try setting the permissions again and use
chmod().
When the bit 28 of a reparse tag is set on a directory, the reparse
information should be ignored and the directory should be accessed
the usual way (this setting is new to Windows 10). In such a situation
access to the directory through an internal plugin rather than through
an external one.
The same policy applies to REPARSE_TAG_WCI which had been defined
earlier without the bit 28 being set.
Newer versions of Windows 10 use several reparse tags for files which
are synchronized to OneDrive cloud storage (0x9000301a, 0x9000601a,
0x9000701a, ...). identify them as IO_REPARSE_TAG_CLOUD and use a
single plugin to process them.
Document an earlier update which forced read-only mode when mounting
a partition which has been left by Windows in an inconsistent state
through hibernation or fast restarting.
The struct members for the time fields in struct stat vary depending on
platform, so introduce #ifdefs using the config.h-supplied definitions
for determining which stat time definition is appropriate.
When the ntfs image is unclean, usually because it was not unmounted
properly from Windows, mounting read-write is denied and falls back
to read-only. Log this situation in the syslog, so that users mounting
through /etc/fstab can more easily know what is going on. Also remove
the "rw" option if it was stated.
Windows 10 brought a new type of reparse point for directories (0x80000018),
so add opendir() and readdir() to the plugin interface to take directories
into account. The interface for releasedir() is merged with release() as
the plugins can discriminate them if needed.
Windows places filenames with a trailing dot or space in the Win32
namespace and allows setting DOS names on such files. This is true even
though on Windows such filenames can only be created and accessed using
WinNT-style paths and will confuse most Windows software. Regardless,
because libntfs-3g did not allow setting DOS names on such files, in
some cases it was impossible to correctly restore, using libntfs-3g, a
directory structure that was created under Windows.
Update ntfs_set_ntfs_dos_name() to permit operating on a file that has a
long name with a trailing dot or space. But continue to forbid creating
such names on a filesystem FUSE-mounted with the windows_name option.
Additionally, continue to forbid a trailing a dot or space in DOS names;
this matches the Windows behavior.
(contributed by Eric Biggers)
Following a recent patch to the fuse kernel, the Posix ACL checks can
be done within the kernel instead of having to be done in the file
system, provided lowntfs-3g is used.
This mode is still not used by default until the fuse patch is
released by distributions.
Now that the size of the reparse point attribute is no longer used by
the FUSE drivers to populate st_size for symlinks and junctions, it no
longer needs to be returned by ntfs_make_symlink().
(contributed by Eric Biggers)
Made ntfs-3f conform to the standard POSIX convention of setting st_size
to the length of the symlink target without a terminating null.
(contributed by Eric Biggers)
$Extend is a directory reserved for metadata specific to Windows.
Inserting other files or directories there leads to problems with
some Windows versions.
GCC 6 reports a warning in ntfs_allowed_dir_access() because the code has
misleading indentation. Fix by adding braces. There is no actual change
in behavior because of the '(allowed == 2)' condition.
Signed-off-by: Eric Biggers <ebiggers3@gmail.com>
Currently, applications that wish to access security descriptors have to
explicitly open the volume's security descriptor index ("$Secure") using
ntfs_open_secure(). Applications are also responsible for closing the
index when done with it. However, the cleanup function for doing,
ntfs_close_secure(), cannot be called easily by all applications because
it requires a SECURITY_CONTEXT argument, not simply the ntfs_volume.
Some applications therefore have to close the inode and index contexts
manually in order to clean up properly.
This proposal updates libntfs-3g to open $Secure unconditonally as part
of ntfs_mount(), so that applications do not have to worry about it.
This proposal updates libntfs-3g to open $Secure unconditonally as part
of ntfs_mount(), so that applications do not have to worry about it.
ntfs_close_secure() is updated to take in a ntfs_volume for internal use,
and ntfs_destroy_security_context() is now the function to call to free
memory associated with a SECURITY_CONTEXT rather than a ntfs_volume.
Some memory leaks in error paths of ntfs_open_secure() are also fixed.
Signed-off-by: Eric Biggers <ebiggers3@gmail.com>
On Linux, the functions in the dlopen API are in libdl. However, on
FreeBSD, libdl doesn't exist and the functions are instead in libc.
Signed-off-by: Eric Biggers <ebiggers3@gmail.com>
Switch to the standard autoconf AC_HEADER_MAJOR macro which takes care
of the ugly details like when to use mkdev.h and when to use sysmacros.h.
(requires <sys/types.h> to be included)
Also include these in all files that use major/minor/makedev funcs.
(Contributed by Mike Frysinger)
When a plugin cannot be initialized a ELIBBAD error is returned on Linux
and OpenIndiana. As this is not a Posix error code, use ENOEXEC on
systems which do not define ELIBBAD.
If the remove_hiberfile mount option is present, explicitly disallow
the library from switching to a read-only mount. This is only to avoid
confusion, as the remove_hiberfile is processed before taking the
decision to fall back to read-only.
These tools were originally developed for running on Windows and later
ported to libntfs-3g. This patch makes them similar to other ntfsprogs
tools, dropping the native Windows interfaces and using libntfs-3g on
all platforms.
There is no change in usage or supported features, only the command
names have changed.
These tools were developped before the ntfsprogs were merged into ntfs-3g,
redesigning them like the ntfsprogs make the code simpler.
Note : at this stage secaudit and usermap cannot be built any more.
User extended attributes should only be set on files and directories,
not on symlinks, sockets, devices, etc. For safety they are also
forbidden on metadata files, but should be allowed on the root
directory. For files based on reparse points, requests are made
to the plugin to determine the type.
The new "system compression" files used by Windows 10 make use of reparse
points to record the compression parameters, and a specific named data
stream is used to store the compressed data. With this patch, processing
of reparse points can be done by an external plugin only loaded as needed.
Junctions and symlinks, which are also based on reparse points, are now
processed by "internal plugins".
This field is always assigned a signed value, and compared to other
signed values (ntfs_time values are signed little-endian 32-bit
integers).
This fixes two compiler warnings about signed/unsigned comparison.
Under some condition (probably interference with another process), the
directory list gets reinitialized by releasedir() and opendir() at the
beginning of a partial buffer. So in readdir() skip to the requested
offset. This is a step towards implementing seekdir().
When compiled autonomously without the automatically generated dynamic
link stubs, use a generic library name instead of a version dependent one.
(obsolete compile mode rarely used).
The fuse cache does not handle properly hard-linked files, so ntfs-3g
traditionally disables it by using a null time-out. With an upgrade of
the fuse kernel module on OpenIndiana, cacheing of non hard-linked files
is now possible, so use it.
When the owner and the group of a file have the same SID, and permissions
for the group is the same as permissions for other, no ACE is needed for
the group.
