mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-30 16:13:54 +08:00
39f8d472f2
Apple Macintosh file system: The semaphore extens_lock is used as a mutex. Convert it to the mutex API Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
286 lines
8.5 KiB
C
286 lines
8.5 KiB
C
/*
|
|
* linux/fs/hfs/hfs_fs.h
|
|
*
|
|
* Copyright (C) 1995-1997 Paul H. Hargrove
|
|
* (C) 2003 Ardis Technologies <roman@ardistech.com>
|
|
* This file may be distributed under the terms of the GNU General Public License.
|
|
*/
|
|
|
|
#ifndef _LINUX_HFS_FS_H
|
|
#define _LINUX_HFS_FS_H
|
|
|
|
#include <linux/slab.h>
|
|
#include <linux/types.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/buffer_head.h>
|
|
#include <linux/fs.h>
|
|
|
|
#include <asm/byteorder.h>
|
|
#include <asm/uaccess.h>
|
|
|
|
#include "hfs.h"
|
|
|
|
#define DBG_BNODE_REFS 0x00000001
|
|
#define DBG_BNODE_MOD 0x00000002
|
|
#define DBG_CAT_MOD 0x00000004
|
|
#define DBG_INODE 0x00000008
|
|
#define DBG_SUPER 0x00000010
|
|
#define DBG_EXTENT 0x00000020
|
|
#define DBG_BITMAP 0x00000040
|
|
|
|
//#define DBG_MASK (DBG_EXTENT|DBG_INODE|DBG_BNODE_MOD|DBG_CAT_MOD|DBG_BITMAP)
|
|
//#define DBG_MASK (DBG_BNODE_MOD|DBG_CAT_MOD|DBG_INODE)
|
|
//#define DBG_MASK (DBG_CAT_MOD|DBG_BNODE_REFS|DBG_INODE|DBG_EXTENT)
|
|
#define DBG_MASK (0)
|
|
|
|
#define dprint(flg, fmt, args...) \
|
|
if (flg & DBG_MASK) printk(fmt , ## args)
|
|
|
|
/*
|
|
* struct hfs_inode_info
|
|
*
|
|
* The HFS-specific part of a Linux (struct inode)
|
|
*/
|
|
struct hfs_inode_info {
|
|
atomic_t opencnt;
|
|
|
|
unsigned int flags;
|
|
|
|
/* to deal with localtime ugliness */
|
|
int tz_secondswest;
|
|
|
|
struct hfs_cat_key cat_key;
|
|
|
|
struct list_head open_dir_list;
|
|
struct inode *rsrc_inode;
|
|
|
|
struct mutex extents_lock;
|
|
|
|
u16 alloc_blocks, clump_blocks;
|
|
sector_t fs_blocks;
|
|
/* Allocation extents from catlog record or volume header */
|
|
hfs_extent_rec first_extents;
|
|
u16 first_blocks;
|
|
hfs_extent_rec cached_extents;
|
|
u16 cached_start, cached_blocks;
|
|
|
|
loff_t phys_size;
|
|
struct inode vfs_inode;
|
|
};
|
|
|
|
#define HFS_FLG_RSRC 0x0001
|
|
#define HFS_FLG_EXT_DIRTY 0x0002
|
|
#define HFS_FLG_EXT_NEW 0x0004
|
|
|
|
#define HFS_IS_RSRC(inode) (HFS_I(inode)->flags & HFS_FLG_RSRC)
|
|
|
|
/*
|
|
* struct hfs_sb_info
|
|
*
|
|
* The HFS-specific part of a Linux (struct super_block)
|
|
*/
|
|
struct hfs_sb_info {
|
|
struct buffer_head *mdb_bh; /* The hfs_buffer
|
|
holding the real
|
|
superblock (aka VIB
|
|
or MDB) */
|
|
struct hfs_mdb *mdb;
|
|
struct buffer_head *alt_mdb_bh; /* The hfs_buffer holding
|
|
the alternate superblock */
|
|
struct hfs_mdb *alt_mdb;
|
|
__be32 *bitmap; /* The page holding the
|
|
allocation bitmap */
|
|
struct hfs_btree *ext_tree; /* Information about
|
|
the extents b-tree */
|
|
struct hfs_btree *cat_tree; /* Information about
|
|
the catalog b-tree */
|
|
u32 file_count; /* The number of
|
|
regular files in
|
|
the filesystem */
|
|
u32 folder_count; /* The number of
|
|
directories in the
|
|
filesystem */
|
|
u32 next_id; /* The next available
|
|
file id number */
|
|
u32 clumpablks; /* The number of allocation
|
|
blocks to try to add when
|
|
extending a file */
|
|
u32 fs_start; /* The first 512-byte
|
|
block represented
|
|
in the bitmap */
|
|
u32 part_start;
|
|
u16 root_files; /* The number of
|
|
regular
|
|
(non-directory)
|
|
files in the root
|
|
directory */
|
|
u16 root_dirs; /* The number of
|
|
directories in the
|
|
root directory */
|
|
u16 fs_ablocks; /* The number of
|
|
allocation blocks
|
|
in the filesystem */
|
|
u16 free_ablocks; /* the number of unused
|
|
allocation blocks
|
|
in the filesystem */
|
|
u32 alloc_blksz; /* The size of an
|
|
"allocation block" */
|
|
int s_quiet; /* Silent failure when
|
|
changing owner or mode? */
|
|
__be32 s_type; /* Type for new files */
|
|
__be32 s_creator; /* Creator for new files */
|
|
umode_t s_file_umask; /* The umask applied to the
|
|
permissions on all files */
|
|
umode_t s_dir_umask; /* The umask applied to the
|
|
permissions on all dirs */
|
|
uid_t s_uid; /* The uid of all files */
|
|
gid_t s_gid; /* The gid of all files */
|
|
|
|
int session, part;
|
|
|
|
struct nls_table *nls_io, *nls_disk;
|
|
|
|
struct mutex bitmap_lock;
|
|
|
|
unsigned long flags;
|
|
|
|
u16 blockoffset;
|
|
|
|
int fs_div;
|
|
|
|
struct hlist_head rsrc_inodes;
|
|
};
|
|
|
|
#define HFS_FLG_BITMAP_DIRTY 0
|
|
#define HFS_FLG_MDB_DIRTY 1
|
|
#define HFS_FLG_ALT_MDB_DIRTY 2
|
|
|
|
/* bitmap.c */
|
|
extern u32 hfs_vbm_search_free(struct super_block *, u32, u32 *);
|
|
extern int hfs_clear_vbm_bits(struct super_block *, u16, u16);
|
|
|
|
/* catalog.c */
|
|
extern int hfs_cat_keycmp(const btree_key *, const btree_key *);
|
|
struct hfs_find_data;
|
|
extern int hfs_cat_find_brec(struct super_block *, u32, struct hfs_find_data *);
|
|
extern int hfs_cat_create(u32, struct inode *, struct qstr *, struct inode *);
|
|
extern int hfs_cat_delete(u32, struct inode *, struct qstr *);
|
|
extern int hfs_cat_move(u32, struct inode *, struct qstr *,
|
|
struct inode *, struct qstr *);
|
|
extern void hfs_cat_build_key(struct super_block *, btree_key *, u32, struct qstr *);
|
|
|
|
/* dir.c */
|
|
extern const struct file_operations hfs_dir_operations;
|
|
extern const struct inode_operations hfs_dir_inode_operations;
|
|
|
|
/* extent.c */
|
|
extern int hfs_ext_keycmp(const btree_key *, const btree_key *);
|
|
extern int hfs_free_fork(struct super_block *, struct hfs_cat_file *, int);
|
|
extern void hfs_ext_write_extent(struct inode *);
|
|
extern int hfs_extend_file(struct inode *);
|
|
extern void hfs_file_truncate(struct inode *);
|
|
|
|
extern int hfs_get_block(struct inode *, sector_t, struct buffer_head *, int);
|
|
|
|
/* inode.c */
|
|
extern const struct address_space_operations hfs_aops;
|
|
extern const struct address_space_operations hfs_btree_aops;
|
|
|
|
extern struct inode *hfs_new_inode(struct inode *, struct qstr *, int);
|
|
extern void hfs_inode_write_fork(struct inode *, struct hfs_extent *, __be32 *, __be32 *);
|
|
extern int hfs_write_inode(struct inode *, int);
|
|
extern int hfs_inode_setattr(struct dentry *, struct iattr *);
|
|
extern void hfs_inode_read_fork(struct inode *inode, struct hfs_extent *ext,
|
|
__be32 log_size, __be32 phys_size, u32 clump_size);
|
|
extern struct inode *hfs_iget(struct super_block *, struct hfs_cat_key *, hfs_cat_rec *);
|
|
extern void hfs_clear_inode(struct inode *);
|
|
extern void hfs_delete_inode(struct inode *);
|
|
|
|
/* attr.c */
|
|
extern int hfs_setxattr(struct dentry *dentry, const char *name,
|
|
const void *value, size_t size, int flags);
|
|
extern ssize_t hfs_getxattr(struct dentry *dentry, const char *name,
|
|
void *value, size_t size);
|
|
extern ssize_t hfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
|
|
|
|
/* mdb.c */
|
|
extern int hfs_mdb_get(struct super_block *);
|
|
extern void hfs_mdb_commit(struct super_block *);
|
|
extern void hfs_mdb_close(struct super_block *);
|
|
extern void hfs_mdb_put(struct super_block *);
|
|
|
|
/* part_tbl.c */
|
|
extern int hfs_part_find(struct super_block *, sector_t *, sector_t *);
|
|
|
|
/* string.c */
|
|
extern struct dentry_operations hfs_dentry_operations;
|
|
|
|
extern int hfs_hash_dentry(struct dentry *, struct qstr *);
|
|
extern int hfs_strcmp(const unsigned char *, unsigned int,
|
|
const unsigned char *, unsigned int);
|
|
extern int hfs_compare_dentry(struct dentry *, struct qstr *, struct qstr *);
|
|
|
|
/* trans.c */
|
|
extern void hfs_asc2mac(struct super_block *, struct hfs_name *, struct qstr *);
|
|
extern int hfs_mac2asc(struct super_block *, char *, const struct hfs_name *);
|
|
|
|
extern struct timezone sys_tz;
|
|
|
|
/*
|
|
* There are two time systems. Both are based on seconds since
|
|
* a particular time/date.
|
|
* Unix: unsigned lil-endian since 00:00 GMT, Jan. 1, 1970
|
|
* mac: unsigned big-endian since 00:00 GMT, Jan. 1, 1904
|
|
*
|
|
*/
|
|
#define __hfs_u_to_mtime(sec) cpu_to_be32(sec + 2082844800U - sys_tz.tz_minuteswest * 60)
|
|
#define __hfs_m_to_utime(sec) (be32_to_cpu(sec) - 2082844800U + sys_tz.tz_minuteswest * 60)
|
|
|
|
#define HFS_I(inode) (list_entry(inode, struct hfs_inode_info, vfs_inode))
|
|
#define HFS_SB(sb) ((struct hfs_sb_info *)(sb)->s_fs_info)
|
|
|
|
#define hfs_m_to_utime(time) (struct timespec){ .tv_sec = __hfs_m_to_utime(time) }
|
|
#define hfs_u_to_mtime(time) __hfs_u_to_mtime((time).tv_sec)
|
|
#define hfs_mtime() __hfs_u_to_mtime(get_seconds())
|
|
|
|
static inline const char *hfs_mdb_name(struct super_block *sb)
|
|
{
|
|
return sb->s_id;
|
|
}
|
|
|
|
static inline void hfs_bitmap_dirty(struct super_block *sb)
|
|
{
|
|
set_bit(HFS_FLG_BITMAP_DIRTY, &HFS_SB(sb)->flags);
|
|
sb->s_dirt = 1;
|
|
}
|
|
|
|
static inline void hfs_buffer_sync(struct buffer_head *bh)
|
|
{
|
|
while (buffer_locked(bh)) {
|
|
wait_on_buffer(bh);
|
|
}
|
|
if (buffer_dirty(bh)) {
|
|
ll_rw_block(WRITE, 1, &bh);
|
|
wait_on_buffer(bh);
|
|
}
|
|
}
|
|
|
|
#define sb_bread512(sb, sec, data) ({ \
|
|
struct buffer_head *__bh; \
|
|
sector_t __block; \
|
|
loff_t __start; \
|
|
int __offset; \
|
|
\
|
|
__start = (loff_t)(sec) << HFS_SECTOR_SIZE_BITS;\
|
|
__block = __start >> (sb)->s_blocksize_bits; \
|
|
__offset = __start & ((sb)->s_blocksize - 1); \
|
|
__bh = sb_bread((sb), __block); \
|
|
if (likely(__bh != NULL)) \
|
|
data = (void *)(__bh->b_data + __offset);\
|
|
else \
|
|
data = NULL; \
|
|
__bh; \
|
|
})
|
|
|
|
#endif
|