#define MSDOS_VALID_MODE (S_IFREG | S_IFDIR | S_IRWXU | S_IRWXG | S_IRWXO)
/* Convert attribute bits and a mask to the UNIX mode. */
#define MSDOS_MKMODE(a, m) (m & (a & ATTR_RO ? S_IRUGO|S_IXUGO : S_IRWXUGO))
-/* Convert the UNIX mode to MS-DOS attribute bits. */
-#define MSDOS_MKATTR(m) ((m & S_IWUGO) ? ATTR_NONE : ATTR_RO)
#define MSDOS_NAME 11 /* maximum name length */
#define MSDOS_LONGNAME 256 /* maximum name length */
#define BAD_FAT12 0xFF7
#define BAD_FAT16 0xFFF7
#define BAD_FAT32 0x0FFFFFF7
-#define BAD_FAT(s) (MSDOS_SB(s)->fat_bits == 32 ? BAD_FAT32 : \
- MSDOS_SB(s)->fat_bits == 16 ? BAD_FAT16 : BAD_FAT12)
/* standard EOF */
#define EOF_FAT12 0xFFF
#define EOF_FAT16 0xFFFF
#define EOF_FAT32 0x0FFFFFFF
-#define EOF_FAT(s) (MSDOS_SB(s)->fat_bits == 32 ? EOF_FAT32 : \
- MSDOS_SB(s)->fat_bits == 16 ? EOF_FAT16 : EOF_FAT12)
#define FAT_ENT_FREE (0)
#define FAT_ENT_BAD (BAD_FAT32)
/*
* ioctl commands
*/
-#define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct dirent [2])
-#define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct dirent [2])
+#define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct dirent [2])
+#define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct dirent [2])
+/* <linux/videotext.h> has used 0x72 ('r') in collision, so skip a few */
+#define FAT_IOCTL_GET_ATTRIBUTES _IOR('r', 0x10, __u32)
+#define FAT_IOCTL_SET_ATTRIBUTES _IOW('r', 0x11, __u32)
/*
* vfat shortname flags
__u8 name[8],ext[3]; /* name and extension */
__u8 attr; /* attribute bits */
__u8 lcase; /* Case for base and extension */
- __u8 ctime_ms; /* Creation time, milliseconds */
+ __u8 ctime_cs; /* Creation time, centiseconds (0-199) */
__le16 ctime; /* Creation time */
__le16 cdate; /* Creation date */
__le16 adate; /* Last access date */
__u8 name11_12[4]; /* last 2 characters in name */
};
-struct vfat_slot_info {
- int long_slots; /* number of long slots in filename */
- loff_t longname_offset; /* dir offset for longname start */
+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;
};
#ifdef __KERNEL__
unsigned long root_cluster; /* first cluster of the root directory */
unsigned long fsinfo_sector; /* sector number of FAT32 fsinfo */
struct semaphore fat_lock;
- int prev_free; /* previously allocated cluster number */
- int free_clusters; /* -1 if undefined */
+ unsigned int prev_free; /* previously allocated cluster number */
+ unsigned int free_clusters; /* -1 if undefined */
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 */
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];
};
int i_start; /* first cluster or 0 */
int i_logstart; /* logical first cluster */
int i_attrs; /* unused attribute bits */
- int i_ctime_ms; /* unused change time in milliseconds */
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;
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 sector_t fat_clus_to_blknr(struct msdos_sb_info *sbi, int clus)
{
return ((sector_t)clus - FAT_START_ENT) * sbi->sec_per_clus
/* fat/cache.c */
extern void fat_cache_inval_inode(struct inode *inode);
-extern int fat_access(struct super_block *sb, int nr, int new_value);
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);
/* fat/dir.c */
extern struct file_operations fat_dir_operations;
extern int fat_search_long(struct inode *inode, const unsigned char *name,
- int name_len, int anycase,
- loff_t *spos, loff_t *lpos);
-extern int fat_add_entries(struct inode *dir, int slots,
- struct buffer_head **bh,
- struct msdos_dir_entry **de, loff_t *i_pos);
-extern int fat_new_dir(struct inode *dir, struct inode *parent, int is_vfat);
+ 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 buffer_head **res_bh,
- struct msdos_dir_entry **res_de, loff_t *i_pos);
+ 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 struct file_operations fat_file_operations;
extern struct inode_operations fat_file_inode_operations;
extern int fat_notify_change(struct dentry * dentry, struct iattr * attr);
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, int *res);
-int fat_fill_super(struct super_block *sb, void *data, int silent,
- struct inode_operations *fs_dir_inode_ops, int isvfat);
+ 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,
+ struct inode_operations *fs_dir_inode_ops, int isvfat);
/* fat/misc.c */
extern void fat_fs_panic(struct super_block *s, const char *fmt, ...);
-extern void lock_fat(struct super_block *sb);
-extern void unlock_fat(struct super_block *sb);
extern void fat_clusters_flush(struct super_block *sb);
-extern int fat_add_cluster(struct inode *inode);
+extern int fat_chain_add(struct inode *inode, int new_dclus, int nr_cluster);
extern int date_dos2unix(unsigned short time, unsigned short date);
extern void fat_date_unix2dos(int unix_date, __le16 *time, __le16 *date);
-extern int fat__get_entry(struct inode *dir, loff_t *pos,
- struct buffer_head **bh,
- struct msdos_dir_entry **de, loff_t *i_pos);
-static __inline__ int fat_get_entry(struct inode *dir, loff_t *pos,
- struct buffer_head **bh,
- struct msdos_dir_entry **de, loff_t *i_pos)
-{
- /* Fast stuff first */
- if (*bh && *de &&
- (*de - (struct msdos_dir_entry *)(*bh)->b_data) < MSDOS_SB(dir->i_sb)->dir_per_block - 1) {
- *pos += sizeof(struct msdos_dir_entry);
- (*de)++;
- (*i_pos)++;
- return 0;
- }
- return fat__get_entry(dir, pos, bh, de, i_pos);
-}
+extern int fat_sync_bhs(struct buffer_head **bhs, int nr_bhs);
#endif /* __KERNEL__ */
git://git.onelab.eu / linux-2.6.git / blobdiff