fat: split include/msdos_fs.h
This splits __KERNEL__ stuff in include/msdos_fs.h into fs/fat/fat.h. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
OGAWA Hirofumi
Linus Torvalds
parent
990e194e69
commit
9e975dae29
|
|
@ -9,8 +9,8 @@
|
|||
*/
|
||||
|
||||
#include <linux/fs.h>
|
||||
#include <linux/msdos_fs.h>
|
||||
#include <linux/buffer_head.h>
|
||||
#include "fat.h"
|
||||
|
||||
/* this must be > 0. */
|
||||
#define FAT_MAX_CACHE 8
|
||||
|
|
|
|||
|
|
@ -16,11 +16,11 @@
|
|||
#include <linux/module.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/time.h>
|
||||
#include <linux/msdos_fs.h>
|
||||
#include <linux/smp_lock.h>
|
||||
#include <linux/buffer_head.h>
|
||||
#include <linux/compat.h>
|
||||
#include <asm/uaccess.h>
|
||||
#include "fat.h"
|
||||
|
||||
static inline loff_t fat_make_i_pos(struct super_block *sb,
|
||||
struct buffer_head *bh,
|
||||
|
|
|
|||
|
|
@ -0,0 +1,274 @@
|
|||
#ifndef _FAT_H
|
||||
#define _FAT_H
|
||||
|
||||
#include <linux/buffer_head.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/nls.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/msdos_fs.h>
|
||||
|
||||
/*
|
||||
* vfat shortname flags
|
||||
*/
|
||||
#define VFAT_SFN_DISPLAY_LOWER 0x0001 /* convert to lowercase for display */
|
||||
#define VFAT_SFN_DISPLAY_WIN95 0x0002 /* emulate win95 rule for display */
|
||||
#define VFAT_SFN_DISPLAY_WINNT 0x0004 /* emulate winnt rule for display */
|
||||
#define VFAT_SFN_CREATE_WIN95 0x0100 /* emulate win95 rule for create */
|
||||
#define VFAT_SFN_CREATE_WINNT 0x0200 /* emulate winnt rule for create */
|
||||
|
||||
struct fat_mount_options {
|
||||
uid_t fs_uid;
|
||||
gid_t fs_gid;
|
||||
unsigned short fs_fmask;
|
||||
unsigned short fs_dmask;
|
||||
unsigned short codepage; /* Codepage for shortname conversions */
|
||||
char *iocharset; /* Charset used for filename input/display */
|
||||
unsigned short shortname; /* flags for shortname display/create rule */
|
||||
unsigned char name_check; /* r = relaxed, n = normal, s = strict */
|
||||
unsigned short allow_utime;/* permission for setting the [am]time */
|
||||
unsigned quiet:1, /* set = fake successful chmods and chowns */
|
||||
showexec:1, /* set = only set x bit for com/exe/bat */
|
||||
sys_immutable:1, /* set = system files are immutable */
|
||||
dotsOK:1, /* set = hidden and system files are named '.filename' */
|
||||
isvfat:1, /* 0=no vfat long filename support, 1=vfat support */
|
||||
utf8:1, /* Use of UTF-8 character set (Default) */
|
||||
unicode_xlate:1, /* create escape sequences for unhandled Unicode */
|
||||
numtail:1, /* Does first alias have a numeric '~1' type tail? */
|
||||
flush:1, /* write things quickly */
|
||||
nocase:1, /* Does this need case conversion? 0=need case conversion*/
|
||||
usefree:1, /* Use free_clusters for FAT32 */
|
||||
tz_utc:1; /* Filesystem timestamps are in UTC */
|
||||
};
|
||||
|
||||
#define FAT_HASH_BITS 8
|
||||
#define FAT_HASH_SIZE (1UL << FAT_HASH_BITS)
|
||||
#define FAT_HASH_MASK (FAT_HASH_SIZE-1)
|
||||
|
||||
/*
|
||||
* MS-DOS file system in-core superblock data
|
||||
*/
|
||||
struct msdos_sb_info {
|
||||
unsigned short sec_per_clus; /* sectors/cluster */
|
||||
unsigned short cluster_bits; /* log2(cluster_size) */
|
||||
unsigned int cluster_size; /* cluster size */
|
||||
unsigned char fats,fat_bits; /* number of FATs, FAT bits (12 or 16) */
|
||||
unsigned short fat_start;
|
||||
unsigned long fat_length; /* FAT start & length (sec.) */
|
||||
unsigned long dir_start;
|
||||
unsigned short dir_entries; /* root dir start & entries */
|
||||
unsigned long data_start; /* first data sector */
|
||||
unsigned long max_cluster; /* maximum cluster number */
|
||||
unsigned long root_cluster; /* first cluster of the root directory */
|
||||
unsigned long fsinfo_sector; /* sector number of FAT32 fsinfo */
|
||||
struct mutex fat_lock;
|
||||
unsigned int prev_free; /* previously allocated cluster number */
|
||||
unsigned int free_clusters; /* -1 if undefined */
|
||||
unsigned int free_clus_valid; /* is free_clusters valid? */
|
||||
struct fat_mount_options options;
|
||||
struct nls_table *nls_disk; /* Codepage used on disk */
|
||||
struct nls_table *nls_io; /* Charset used for input and display */
|
||||
const void *dir_ops; /* Opaque; default directory operations */
|
||||
int dir_per_block; /* dir entries per block */
|
||||
int dir_per_block_bits; /* log2(dir_per_block) */
|
||||
|
||||
int fatent_shift;
|
||||
struct fatent_operations *fatent_ops;
|
||||
|
||||
spinlock_t inode_hash_lock;
|
||||
struct hlist_head inode_hashtable[FAT_HASH_SIZE];
|
||||
};
|
||||
|
||||
#define FAT_CACHE_VALID 0 /* special case for valid cache */
|
||||
|
||||
/*
|
||||
* MS-DOS file system inode data in memory
|
||||
*/
|
||||
struct msdos_inode_info {
|
||||
spinlock_t cache_lru_lock;
|
||||
struct list_head cache_lru;
|
||||
int nr_caches;
|
||||
/* for avoiding the race between fat_free() and fat_get_cluster() */
|
||||
unsigned int cache_valid_id;
|
||||
|
||||
loff_t mmu_private;
|
||||
int i_start; /* first cluster or 0 */
|
||||
int i_logstart; /* logical first cluster */
|
||||
int i_attrs; /* unused attribute bits */
|
||||
loff_t i_pos; /* on-disk position of directory entry or 0 */
|
||||
struct hlist_node i_fat_hash; /* hash by i_location */
|
||||
struct inode vfs_inode;
|
||||
};
|
||||
|
||||
struct fat_slot_info {
|
||||
loff_t i_pos; /* on-disk position of directory entry */
|
||||
loff_t slot_off; /* offset for slot or de start */
|
||||
int nr_slots; /* number of slots + 1(de) in filename */
|
||||
struct msdos_dir_entry *de;
|
||||
struct buffer_head *bh;
|
||||
};
|
||||
|
||||
static inline struct msdos_sb_info *MSDOS_SB(struct super_block *sb)
|
||||
{
|
||||
return sb->s_fs_info;
|
||||
}
|
||||
|
||||
static inline struct msdos_inode_info *MSDOS_I(struct inode *inode)
|
||||
{
|
||||
return container_of(inode, struct msdos_inode_info, vfs_inode);
|
||||
}
|
||||
|
||||
/* Return the FAT attribute byte for this inode */
|
||||
static inline u8 fat_attr(struct inode *inode)
|
||||
{
|
||||
return ((inode->i_mode & S_IWUGO) ? ATTR_NONE : ATTR_RO) |
|
||||
(S_ISDIR(inode->i_mode) ? ATTR_DIR : ATTR_NONE) |
|
||||
MSDOS_I(inode)->i_attrs;
|
||||
}
|
||||
|
||||
static inline unsigned char fat_checksum(const __u8 *name)
|
||||
{
|
||||
unsigned char s = name[0];
|
||||
s = (s<<7) + (s>>1) + name[1]; s = (s<<7) + (s>>1) + name[2];
|
||||
s = (s<<7) + (s>>1) + name[3]; s = (s<<7) + (s>>1) + name[4];
|
||||
s = (s<<7) + (s>>1) + name[5]; s = (s<<7) + (s>>1) + name[6];
|
||||
s = (s<<7) + (s>>1) + name[7]; s = (s<<7) + (s>>1) + name[8];
|
||||
s = (s<<7) + (s>>1) + name[9]; s = (s<<7) + (s>>1) + name[10];
|
||||
return s;
|
||||
}
|
||||
|
||||
static inline sector_t fat_clus_to_blknr(struct msdos_sb_info *sbi, int clus)
|
||||
{
|
||||
return ((sector_t)clus - FAT_START_ENT) * sbi->sec_per_clus
|
||||
+ sbi->data_start;
|
||||
}
|
||||
|
||||
static inline void fat16_towchar(wchar_t *dst, const __u8 *src, size_t len)
|
||||
{
|
||||
#ifdef __BIG_ENDIAN
|
||||
while (len--) {
|
||||
*dst++ = src[0] | (src[1] << 8);
|
||||
src += 2;
|
||||
}
|
||||
#else
|
||||
memcpy(dst, src, len * 2);
|
||||
#endif
|
||||
}
|
||||
|
||||
static inline void fatwchar_to16(__u8 *dst, const wchar_t *src, size_t len)
|
||||
{
|
||||
#ifdef __BIG_ENDIAN
|
||||
while (len--) {
|
||||
dst[0] = *src & 0x00FF;
|
||||
dst[1] = (*src & 0xFF00) >> 8;
|
||||
dst += 2;
|
||||
src++;
|
||||
}
|
||||
#else
|
||||
memcpy(dst, src, len * 2);
|
||||
#endif
|
||||
}
|
||||
|
||||
/* fat/cache.c */
|
||||
extern void fat_cache_inval_inode(struct inode *inode);
|
||||
extern int fat_get_cluster(struct inode *inode, int cluster,
|
||||
int *fclus, int *dclus);
|
||||
extern int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys,
|
||||
unsigned long *mapped_blocks);
|
||||
|
||||
/* fat/dir.c */
|
||||
extern const struct file_operations fat_dir_operations;
|
||||
extern int fat_search_long(struct inode *inode, const unsigned char *name,
|
||||
int name_len, struct fat_slot_info *sinfo);
|
||||
extern int fat_dir_empty(struct inode *dir);
|
||||
extern int fat_subdirs(struct inode *dir);
|
||||
extern int fat_scan(struct inode *dir, const unsigned char *name,
|
||||
struct fat_slot_info *sinfo);
|
||||
extern int fat_get_dotdot_entry(struct inode *dir, struct buffer_head **bh,
|
||||
struct msdos_dir_entry **de, loff_t *i_pos);
|
||||
extern int fat_alloc_new_dir(struct inode *dir, struct timespec *ts);
|
||||
extern int fat_add_entries(struct inode *dir, void *slots, int nr_slots,
|
||||
struct fat_slot_info *sinfo);
|
||||
extern int fat_remove_entries(struct inode *dir, struct fat_slot_info *sinfo);
|
||||
|
||||
/* fat/fatent.c */
|
||||
struct fat_entry {
|
||||
int entry;
|
||||
union {
|
||||
u8 *ent12_p[2];
|
||||
__le16 *ent16_p;
|
||||
__le32 *ent32_p;
|
||||
} u;
|
||||
int nr_bhs;
|
||||
struct buffer_head *bhs[2];
|
||||
};
|
||||
|
||||
static inline void fatent_init(struct fat_entry *fatent)
|
||||
{
|
||||
fatent->nr_bhs = 0;
|
||||
fatent->entry = 0;
|
||||
fatent->u.ent32_p = NULL;
|
||||
fatent->bhs[0] = fatent->bhs[1] = NULL;
|
||||
}
|
||||
|
||||
static inline void fatent_set_entry(struct fat_entry *fatent, int entry)
|
||||
{
|
||||
fatent->entry = entry;
|
||||
fatent->u.ent32_p = NULL;
|
||||
}
|
||||
|
||||
static inline void fatent_brelse(struct fat_entry *fatent)
|
||||
{
|
||||
int i;
|
||||
fatent->u.ent32_p = NULL;
|
||||
for (i = 0; i < fatent->nr_bhs; i++)
|
||||
brelse(fatent->bhs[i]);
|
||||
fatent->nr_bhs = 0;
|
||||
fatent->bhs[0] = fatent->bhs[1] = NULL;
|
||||
}
|
||||
|
||||
extern void fat_ent_access_init(struct super_block *sb);
|
||||
extern int fat_ent_read(struct inode *inode, struct fat_entry *fatent,
|
||||
int entry);
|
||||
extern int fat_ent_write(struct inode *inode, struct fat_entry *fatent,
|
||||
int new, int wait);
|
||||
extern int fat_alloc_clusters(struct inode *inode, int *cluster,
|
||||
int nr_cluster);
|
||||
extern int fat_free_clusters(struct inode *inode, int cluster);
|
||||
extern int fat_count_free_clusters(struct super_block *sb);
|
||||
|
||||
/* fat/file.c */
|
||||
extern int fat_generic_ioctl(struct inode *inode, struct file *filp,
|
||||
unsigned int cmd, unsigned long arg);
|
||||
extern const struct file_operations fat_file_operations;
|
||||
extern const struct inode_operations fat_file_inode_operations;
|
||||
extern int fat_setattr(struct dentry * dentry, struct iattr * attr);
|
||||
extern void fat_truncate(struct inode *inode);
|
||||
extern int fat_getattr(struct vfsmount *mnt, struct dentry *dentry,
|
||||
struct kstat *stat);
|
||||
|
||||
/* fat/inode.c */
|
||||
extern void fat_attach(struct inode *inode, loff_t i_pos);
|
||||
extern void fat_detach(struct inode *inode);
|
||||
extern struct inode *fat_iget(struct super_block *sb, loff_t i_pos);
|
||||
extern struct inode *fat_build_inode(struct super_block *sb,
|
||||
struct msdos_dir_entry *de, loff_t i_pos);
|
||||
extern int fat_sync_inode(struct inode *inode);
|
||||
extern int fat_fill_super(struct super_block *sb, void *data, int silent,
|
||||
const struct inode_operations *fs_dir_inode_ops, int isvfat);
|
||||
|
||||
extern int fat_flush_inodes(struct super_block *sb, struct inode *i1,
|
||||
struct inode *i2);
|
||||
/* fat/misc.c */
|
||||
extern void fat_fs_panic(struct super_block *s, const char *fmt, ...);
|
||||
extern void fat_clusters_flush(struct super_block *sb);
|
||||
extern int fat_chain_add(struct inode *inode, int new_dclus, int nr_cluster);
|
||||
extern int date_dos2unix(unsigned short time, unsigned short date, int tz_utc);
|
||||
extern void fat_date_unix2dos(int unix_date, __le16 *time, __le16 *date,
|
||||
int tz_utc);
|
||||
extern int fat_sync_bhs(struct buffer_head **bhs, int nr_bhs);
|
||||
|
||||
int fat_cache_init(void);
|
||||
void fat_cache_destroy(void);
|
||||
|
||||
#endif /* !_FAT_H */
|
||||
|
|
@ -7,6 +7,7 @@
|
|||
#include <linux/fs.h>
|
||||
#include <linux/msdos_fs.h>
|
||||
#include <linux/blkdev.h>
|
||||
#include "fat.h"
|
||||
|
||||
struct fatent_operations {
|
||||
void (*ent_blocknr)(struct super_block *, int, int *, sector_t *);
|
||||
|
|
|
|||
|
|
@ -10,13 +10,13 @@
|
|||
#include <linux/module.h>
|
||||
#include <linux/mount.h>
|
||||
#include <linux/time.h>
|
||||
#include <linux/msdos_fs.h>
|
||||
#include <linux/buffer_head.h>
|
||||
#include <linux/writeback.h>
|
||||
#include <linux/backing-dev.h>
|
||||
#include <linux/blkdev.h>
|
||||
#include <linux/fsnotify.h>
|
||||
#include <linux/security.h>
|
||||
#include "fat.h"
|
||||
|
||||
int fat_generic_ioctl(struct inode *inode, struct file *filp,
|
||||
unsigned int cmd, unsigned long arg)
|
||||
|
|
|
|||
|
|
@ -16,7 +16,6 @@
|
|||
#include <linux/slab.h>
|
||||
#include <linux/smp_lock.h>
|
||||
#include <linux/seq_file.h>
|
||||
#include <linux/msdos_fs.h>
|
||||
#include <linux/pagemap.h>
|
||||
#include <linux/mpage.h>
|
||||
#include <linux/buffer_head.h>
|
||||
|
|
@ -28,6 +27,7 @@
|
|||
#include <linux/writeback.h>
|
||||
#include <linux/log2.h>
|
||||
#include <asm/unaligned.h>
|
||||
#include "fat.h"
|
||||
|
||||
#ifndef CONFIG_FAT_DEFAULT_IOCHARSET
|
||||
/* if user don't select VFAT, this is undefined. */
|
||||
|
|
|
|||
|
|
@ -8,8 +8,8 @@
|
|||
|
||||
#include <linux/module.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/msdos_fs.h>
|
||||
#include <linux/buffer_head.h>
|
||||
#include "fat.h"
|
||||
|
||||
/*
|
||||
* fat_fs_panic reports a severe file system problem and sets the file system
|
||||
|
|
|
|||
|
|
@ -9,8 +9,8 @@
|
|||
#include <linux/module.h>
|
||||
#include <linux/time.h>
|
||||
#include <linux/buffer_head.h>
|
||||
#include <linux/msdos_fs.h>
|
||||
#include <linux/smp_lock.h>
|
||||
#include "fat.h"
|
||||
|
||||
/* Characters that are undesirable in an MS-DOS file name */
|
||||
static unsigned char bad_chars[] = "*?<>|\"";
|
||||
|
|
|
|||
|
|
@ -16,14 +16,13 @@
|
|||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
|
||||
#include <linux/jiffies.h>
|
||||
#include <linux/msdos_fs.h>
|
||||
#include <linux/ctype.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/smp_lock.h>
|
||||
#include <linux/buffer_head.h>
|
||||
#include <linux/namei.h>
|
||||
#include "fat.h"
|
||||
|
||||
static int vfat_revalidate(struct dentry *dentry, struct nameidata *nd)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -167,282 +167,10 @@ struct msdos_dir_slot {
|
|||
};
|
||||
|
||||
#ifdef __KERNEL__
|
||||
|
||||
#include <linux/buffer_head.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/nls.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/mutex.h>
|
||||
|
||||
/*
|
||||
* vfat shortname flags
|
||||
*/
|
||||
#define VFAT_SFN_DISPLAY_LOWER 0x0001 /* convert to lowercase for display */
|
||||
#define VFAT_SFN_DISPLAY_WIN95 0x0002 /* emulate win95 rule for display */
|
||||
#define VFAT_SFN_DISPLAY_WINNT 0x0004 /* emulate winnt rule for display */
|
||||
#define VFAT_SFN_CREATE_WIN95 0x0100 /* emulate win95 rule for create */
|
||||
#define VFAT_SFN_CREATE_WINNT 0x0200 /* emulate winnt rule for create */
|
||||
|
||||
struct fat_mount_options {
|
||||
uid_t fs_uid;
|
||||
gid_t fs_gid;
|
||||
unsigned short fs_fmask;
|
||||
unsigned short fs_dmask;
|
||||
unsigned short codepage; /* Codepage for shortname conversions */
|
||||
char *iocharset; /* Charset used for filename input/display */
|
||||
unsigned short shortname; /* flags for shortname display/create rule */
|
||||
unsigned char name_check; /* r = relaxed, n = normal, s = strict */
|
||||
unsigned short allow_utime;/* permission for setting the [am]time */
|
||||
unsigned quiet:1, /* set = fake successful chmods and chowns */
|
||||
showexec:1, /* set = only set x bit for com/exe/bat */
|
||||
sys_immutable:1, /* set = system files are immutable */
|
||||
dotsOK:1, /* set = hidden and system files are named '.filename' */
|
||||
isvfat:1, /* 0=no vfat long filename support, 1=vfat support */
|
||||
utf8:1, /* Use of UTF-8 character set (Default) */
|
||||
unicode_xlate:1, /* create escape sequences for unhandled Unicode */
|
||||
numtail:1, /* Does first alias have a numeric '~1' type tail? */
|
||||
flush:1, /* write things quickly */
|
||||
nocase:1, /* Does this need case conversion? 0=need case conversion*/
|
||||
usefree:1, /* Use free_clusters for FAT32 */
|
||||
tz_utc:1; /* Filesystem timestamps are in UTC */
|
||||
};
|
||||
|
||||
#define FAT_HASH_BITS 8
|
||||
#define FAT_HASH_SIZE (1UL << FAT_HASH_BITS)
|
||||
#define FAT_HASH_MASK (FAT_HASH_SIZE-1)
|
||||
|
||||
/*
|
||||
* MS-DOS file system in-core superblock data
|
||||
*/
|
||||
struct msdos_sb_info {
|
||||
unsigned short sec_per_clus; /* sectors/cluster */
|
||||
unsigned short cluster_bits; /* log2(cluster_size) */
|
||||
unsigned int cluster_size; /* cluster size */
|
||||
unsigned char fats,fat_bits; /* number of FATs, FAT bits (12 or 16) */
|
||||
unsigned short fat_start;
|
||||
unsigned long fat_length; /* FAT start & length (sec.) */
|
||||
unsigned long dir_start;
|
||||
unsigned short dir_entries; /* root dir start & entries */
|
||||
unsigned long data_start; /* first data sector */
|
||||
unsigned long max_cluster; /* maximum cluster number */
|
||||
unsigned long root_cluster; /* first cluster of the root directory */
|
||||
unsigned long fsinfo_sector; /* sector number of FAT32 fsinfo */
|
||||
struct mutex fat_lock;
|
||||
unsigned int prev_free; /* previously allocated cluster number */
|
||||
unsigned int free_clusters; /* -1 if undefined */
|
||||
unsigned int free_clus_valid; /* is free_clusters valid? */
|
||||
struct fat_mount_options options;
|
||||
struct nls_table *nls_disk; /* Codepage used on disk */
|
||||
struct nls_table *nls_io; /* Charset used for input and display */
|
||||
const void *dir_ops; /* Opaque; default directory operations */
|
||||
int dir_per_block; /* dir entries per block */
|
||||
int dir_per_block_bits; /* log2(dir_per_block) */
|
||||
|
||||
int fatent_shift;
|
||||
struct fatent_operations *fatent_ops;
|
||||
|
||||
spinlock_t inode_hash_lock;
|
||||
struct hlist_head inode_hashtable[FAT_HASH_SIZE];
|
||||
};
|
||||
|
||||
#define FAT_CACHE_VALID 0 /* special case for valid cache */
|
||||
|
||||
/*
|
||||
* MS-DOS file system inode data in memory
|
||||
*/
|
||||
struct msdos_inode_info {
|
||||
spinlock_t cache_lru_lock;
|
||||
struct list_head cache_lru;
|
||||
int nr_caches;
|
||||
/* for avoiding the race between fat_free() and fat_get_cluster() */
|
||||
unsigned int cache_valid_id;
|
||||
|
||||
loff_t mmu_private;
|
||||
int i_start; /* first cluster or 0 */
|
||||
int i_logstart; /* logical first cluster */
|
||||
int i_attrs; /* unused attribute bits */
|
||||
loff_t i_pos; /* on-disk position of directory entry or 0 */
|
||||
struct hlist_node i_fat_hash; /* hash by i_location */
|
||||
struct inode vfs_inode;
|
||||
};
|
||||
|
||||
struct fat_slot_info {
|
||||
loff_t i_pos; /* on-disk position of directory entry */
|
||||
loff_t slot_off; /* offset for slot or de start */
|
||||
int nr_slots; /* number of slots + 1(de) in filename */
|
||||
struct msdos_dir_entry *de;
|
||||
struct buffer_head *bh;
|
||||
};
|
||||
|
||||
static inline struct msdos_sb_info *MSDOS_SB(struct super_block *sb)
|
||||
{
|
||||
return sb->s_fs_info;
|
||||
}
|
||||
|
||||
static inline struct msdos_inode_info *MSDOS_I(struct inode *inode)
|
||||
{
|
||||
return container_of(inode, struct msdos_inode_info, vfs_inode);
|
||||
}
|
||||
|
||||
/* Return the FAT attribute byte for this inode */
|
||||
static inline u8 fat_attr(struct inode *inode)
|
||||
{
|
||||
return ((inode->i_mode & S_IWUGO) ? ATTR_NONE : ATTR_RO) |
|
||||
(S_ISDIR(inode->i_mode) ? ATTR_DIR : ATTR_NONE) |
|
||||
MSDOS_I(inode)->i_attrs;
|
||||
}
|
||||
|
||||
static inline unsigned char fat_checksum(const __u8 *name)
|
||||
{
|
||||
unsigned char s = name[0];
|
||||
s = (s<<7) + (s>>1) + name[1]; s = (s<<7) + (s>>1) + name[2];
|
||||
s = (s<<7) + (s>>1) + name[3]; s = (s<<7) + (s>>1) + name[4];
|
||||
s = (s<<7) + (s>>1) + name[5]; s = (s<<7) + (s>>1) + name[6];
|
||||
s = (s<<7) + (s>>1) + name[7]; s = (s<<7) + (s>>1) + name[8];
|
||||
s = (s<<7) + (s>>1) + name[9]; s = (s<<7) + (s>>1) + name[10];
|
||||
return s;
|
||||
}
|
||||
|
||||
static inline sector_t fat_clus_to_blknr(struct msdos_sb_info *sbi, int clus)
|
||||
{
|
||||
return ((sector_t)clus - FAT_START_ENT) * sbi->sec_per_clus
|
||||
+ sbi->data_start;
|
||||
}
|
||||
|
||||
static inline void fat16_towchar(wchar_t *dst, const __u8 *src, size_t len)
|
||||
{
|
||||
#ifdef __BIG_ENDIAN
|
||||
while (len--) {
|
||||
*dst++ = src[0] | (src[1] << 8);
|
||||
src += 2;
|
||||
}
|
||||
#else
|
||||
memcpy(dst, src, len * 2);
|
||||
#endif
|
||||
}
|
||||
|
||||
static inline void fatwchar_to16(__u8 *dst, const wchar_t *src, size_t len)
|
||||
{
|
||||
#ifdef __BIG_ENDIAN
|
||||
while (len--) {
|
||||
dst[0] = *src & 0x00FF;
|
||||
dst[1] = (*src & 0xFF00) >> 8;
|
||||
dst += 2;
|
||||
src++;
|
||||
}
|
||||
#else
|
||||
memcpy(dst, src, len * 2);
|
||||
#endif
|
||||
}
|
||||
|
||||
/* media of boot sector */
|
||||
static inline int fat_valid_media(u8 media)
|
||||
{
|
||||
return 0xf8 <= media || media == 0xf0;
|
||||
}
|
||||
|
||||
/* fat/cache.c */
|
||||
extern void fat_cache_inval_inode(struct inode *inode);
|
||||
extern int fat_get_cluster(struct inode *inode, int cluster,
|
||||
int *fclus, int *dclus);
|
||||
extern int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys,
|
||||
unsigned long *mapped_blocks);
|
||||
|
||||
/* fat/dir.c */
|
||||
extern const struct file_operations fat_dir_operations;
|
||||
extern int fat_search_long(struct inode *inode, const unsigned char *name,
|
||||
int name_len, struct fat_slot_info *sinfo);
|
||||
extern int fat_dir_empty(struct inode *dir);
|
||||
extern int fat_subdirs(struct inode *dir);
|
||||
extern int fat_scan(struct inode *dir, const unsigned char *name,
|
||||
struct fat_slot_info *sinfo);
|
||||
extern int fat_get_dotdot_entry(struct inode *dir, struct buffer_head **bh,
|
||||
struct msdos_dir_entry **de, loff_t *i_pos);
|
||||
extern int fat_alloc_new_dir(struct inode *dir, struct timespec *ts);
|
||||
extern int fat_add_entries(struct inode *dir, void *slots, int nr_slots,
|
||||
struct fat_slot_info *sinfo);
|
||||
extern int fat_remove_entries(struct inode *dir, struct fat_slot_info *sinfo);
|
||||
|
||||
/* fat/fatent.c */
|
||||
struct fat_entry {
|
||||
int entry;
|
||||
union {
|
||||
u8 *ent12_p[2];
|
||||
__le16 *ent16_p;
|
||||
__le32 *ent32_p;
|
||||
} u;
|
||||
int nr_bhs;
|
||||
struct buffer_head *bhs[2];
|
||||
};
|
||||
|
||||
static inline void fatent_init(struct fat_entry *fatent)
|
||||
{
|
||||
fatent->nr_bhs = 0;
|
||||
fatent->entry = 0;
|
||||
fatent->u.ent32_p = NULL;
|
||||
fatent->bhs[0] = fatent->bhs[1] = NULL;
|
||||
}
|
||||
|
||||
static inline void fatent_set_entry(struct fat_entry *fatent, int entry)
|
||||
{
|
||||
fatent->entry = entry;
|
||||
fatent->u.ent32_p = NULL;
|
||||
}
|
||||
|
||||
static inline void fatent_brelse(struct fat_entry *fatent)
|
||||
{
|
||||
int i;
|
||||
fatent->u.ent32_p = NULL;
|
||||
for (i = 0; i < fatent->nr_bhs; i++)
|
||||
brelse(fatent->bhs[i]);
|
||||
fatent->nr_bhs = 0;
|
||||
fatent->bhs[0] = fatent->bhs[1] = NULL;
|
||||
}
|
||||
|
||||
extern void fat_ent_access_init(struct super_block *sb);
|
||||
extern int fat_ent_read(struct inode *inode, struct fat_entry *fatent,
|
||||
int entry);
|
||||
extern int fat_ent_write(struct inode *inode, struct fat_entry *fatent,
|
||||
int new, int wait);
|
||||
extern int fat_alloc_clusters(struct inode *inode, int *cluster,
|
||||
int nr_cluster);
|
||||
extern int fat_free_clusters(struct inode *inode, int cluster);
|
||||
extern int fat_count_free_clusters(struct super_block *sb);
|
||||
|
||||
/* fat/file.c */
|
||||
extern int fat_generic_ioctl(struct inode *inode, struct file *filp,
|
||||
unsigned int cmd, unsigned long arg);
|
||||
extern const struct file_operations fat_file_operations;
|
||||
extern const struct inode_operations fat_file_inode_operations;
|
||||
extern int fat_setattr(struct dentry * dentry, struct iattr * attr);
|
||||
extern void fat_truncate(struct inode *inode);
|
||||
extern int fat_getattr(struct vfsmount *mnt, struct dentry *dentry,
|
||||
struct kstat *stat);
|
||||
|
||||
/* fat/inode.c */
|
||||
extern void fat_attach(struct inode *inode, loff_t i_pos);
|
||||
extern void fat_detach(struct inode *inode);
|
||||
extern struct inode *fat_iget(struct super_block *sb, loff_t i_pos);
|
||||
extern struct inode *fat_build_inode(struct super_block *sb,
|
||||
struct msdos_dir_entry *de, loff_t i_pos);
|
||||
extern int fat_sync_inode(struct inode *inode);
|
||||
extern int fat_fill_super(struct super_block *sb, void *data, int silent,
|
||||
const struct inode_operations *fs_dir_inode_ops, int isvfat);
|
||||
|
||||
extern int fat_flush_inodes(struct super_block *sb, struct inode *i1,
|
||||
struct inode *i2);
|
||||
/* fat/misc.c */
|
||||
extern void fat_fs_panic(struct super_block *s, const char *fmt, ...);
|
||||
extern void fat_clusters_flush(struct super_block *sb);
|
||||
extern int fat_chain_add(struct inode *inode, int new_dclus, int nr_cluster);
|
||||
extern int date_dos2unix(unsigned short time, unsigned short date, int tz_utc);
|
||||
extern void fat_date_unix2dos(int unix_date, __le16 *time, __le16 *date,
|
||||
int tz_utc);
|
||||
extern int fat_sync_bhs(struct buffer_head **bhs, int nr_bhs);
|
||||
|
||||
int fat_cache_init(void);
|
||||
void fat_cache_destroy(void);
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
#endif
|
||||
#endif /* !__KERNEL__ */
|
||||
#endif /* !_LINUX_MSDOS_FS_H */
|
||||
|
|
|
|||
Loading…
Reference in New Issue