diff options
Diffstat (limited to 'include/linux/msdos_fs.h')
| -rw-r--r-- | include/linux/msdos_fs.h | 216 |
1 files changed, 153 insertions, 63 deletions
diff --git a/include/linux/msdos_fs.h b/include/linux/msdos_fs.h index fa2dd9fa9..7aef08e01 100644 --- a/include/linux/msdos_fs.h +++ b/include/linux/msdos_fs.h @@ -21,6 +21,9 @@ #define FAT_CACHE 8 /* FAT cache size */ +#define MSDOS_MAX_EXTRA 3 /* tolerate up to that number of clusters which are + inaccessible because the FAT is too short */ + #define ATTR_RO 1 /* read-only */ #define ATTR_HIDDEN 2 /* hidden */ #define ATTR_SYS 4 /* system */ @@ -31,10 +34,26 @@ #define ATTR_NONE 0 /* no attribute bits */ #define ATTR_UNUSED (ATTR_VOLUME | ATTR_ARCH | ATTR_SYS | ATTR_HIDDEN) /* attribute bits that are copied "as is" */ +#define ATTR_EXT (ATTR_RO | ATTR_HIDDEN | ATTR_SYS | ATTR_VOLUME) + /* bits that are used by the Windows 95/Windows NT extended FAT */ + +#define ATTR_DIR_READ_BOTH 512 /* read both short and long names from the + * vfat filesystem. This is used by Samba + * to export the vfat filesystem with correct + * shortnames. */ +#define ATTR_DIR_READ_SHORT 1024 + +#define CASE_LOWER_BASE 8 /* base is lower case */ +#define CASE_LOWER_EXT 16 /* extension is lower case */ + +#define SCAN_ANY 0 /* either hidden or not */ +#define SCAN_HID 1 /* only hidden */ +#define SCAN_NOTHID 2 /* only not hidden */ +#define SCAN_NOTANY 3 /* test name, then use SCAN_HID or SCAN_NOTHID */ #define DELETED_FLAG 0xe5 /* marks file as deleted when in name[0] */ -#define IS_FREE(n) (!*(n) || *(unsigned char *) (n) == DELETED_FLAG || \ - *(unsigned char *) (n) == FD_FILL_BYTE) +#define IS_FREE(n) (!*(n) || *(const unsigned char *) (n) == DELETED_FLAG || \ + *(const unsigned char *) (n) == FD_FILL_BYTE) #define MSDOS_VALID_MODE (S_IFREG | S_IFDIR | S_IRWXU | S_IRWXG | S_IRWXO) /* valid file mode bits */ @@ -43,16 +62,29 @@ #define MSDOS_I(i) (&((i)->u.msdos_i)) #define MSDOS_NAME 11 /* maximum name length */ +#define MSDOS_LONGNAME 256 /* maximum name length */ +#define MSDOS_SLOTS 21 /* max # of slots needed for short and long names */ #define MSDOS_DOT ". " /* ".", padded to MSDOS_NAME chars */ #define MSDOS_DOTDOT ".. " /* "..", padded to MSDOS_NAME chars */ #define MSDOS_FAT12 4078 /* maximum number of clusters in a 12 bit FAT */ /* + * Inode flags + */ +#define FAT_BINARY_FL 0x00000001 /* File contains binary data */ + +/* + * ioctl commands + */ +#define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, long) +#define VFAT_IOCTL_READDIR_SHORT _IOW('r', 2, long) + +/* * Conversion from and to little-endian byte order. (no-op on i386/i486) * - * Naming: Ca_b_c, where a: F = from, T = to, b: LE = little-endian, BE = big- - * endian, c: W = word (16 bits), L = longword (32 bits) + * Naming: Ca_b_c, where a: F = from, T = to, b: LE = little-endian, + * BE = big-endian, c: W = word (16 bits), L = longword (32 bits) */ #define CF_LE_W(v) (v) @@ -82,106 +114,164 @@ struct msdos_boot_sector { struct msdos_dir_entry { __s8 name[8],ext[3]; /* name and extension */ __u8 attr; /* attribute bits */ - __u8 unused[10]; + __u8 lcase; /* Case for base and extension */ + __u8 ctime_ms; /* Creation time, milliseconds */ + __u16 ctime; /* Creation time */ + __u16 cdate; /* Creation date */ + __u16 adate; /* Last access date */ + __u8 unused[2]; __u16 time,date,start;/* time, date and first cluster */ __u32 size; /* file size (in bytes) */ }; -struct fat_cache { - int device; /* device number. 0 means unused. */ - int ino; /* inode number. */ - int file_cluster; /* cluster number in the file. */ - int disk_cluster; /* cluster number on disk. */ - struct fat_cache *next; /* next cache entry */ +/* Up to 13 characters of the name */ +struct msdos_dir_slot { + __u8 id; /* sequence number for slot */ + __u8 name0_4[10]; /* first 5 characters in name */ + __u8 attr; /* attribute byte */ + __u8 reserved; /* always 0 */ + __u8 alias_checksum; /* checksum for 8.3 alias */ + __u8 name5_10[12]; /* 6 more characters in name */ + __u8 start[2]; /* starting cluster number */ + __u8 name11_12[4]; /* last 2 characters in name */ }; -/* Determine whether this FS has kB-aligned data. */ +struct slot_info { + int is_long; /* was the found entry long */ + int long_slots; /* number of long slots in filename */ + int total_slots; /* total slots (long and short) */ + loff_t longname_offset; /* dir offset for longname start */ + loff_t shortname_offset; /* dir offset for shortname start */ + int ino; /* ino for the file */ +}; +/* Determine whether this FS has kB-aligned data. */ #define MSDOS_CAN_BMAP(mib) (!(((mib)->cluster_size & 1) || \ ((mib)->data_start & 1))) /* 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) + #ifdef __KERNEL__ -/* misc.c */ +typedef int (*fat_filldir_t)(filldir_t filldir, void *, const char *, + int, int, off_t, off_t, int, ino_t); + +struct fat_cache { + kdev_t device; /* device number. 0 means unused. */ + int ino; /* inode number. */ + int file_cluster; /* cluster number in the file. */ + int disk_cluster; /* cluster number on disk. */ + struct fat_cache *next; /* next cache entry */ +}; -extern void fs_panic(struct super_block *s,char *msg); +/* misc.c */ extern int is_binary(char conversion,char *extension); -extern void lock_creation(void); -extern void unlock_creation(void); extern void lock_fat(struct super_block *sb); extern void unlock_fat(struct super_block *sb); -extern int msdos_add_cluster(struct inode *inode); +extern int fat_add_cluster(struct inode *inode); extern int date_dos2unix(__u16 time, __u16 date); -extern void date_unix2dos(int unix_date,__u16 *time, __u16 *date); -extern int msdos_get_entry(struct inode *dir,loff_t *pos,struct buffer_head **bh, - struct msdos_dir_entry **de); -extern int msdos_scan(struct inode *dir,char *name,struct buffer_head **res_bh, - struct msdos_dir_entry **res_de,int *ino); -extern int msdos_parent_ino(struct inode *dir,int locked); -extern int msdos_subdirs(struct inode *dir); +extern void fat_fs_panic(struct super_block *s,const char *msg); +extern void fat_lock_creation(void); +extern void fat_unlock_creation(void); +extern void fat_date_unix2dos(int unix_date,__u16 *time, __u16 *date); +extern int fat_get_entry(struct inode *dir,loff_t *pos,struct buffer_head **bh, + struct msdos_dir_entry **de); +extern int fat_scan(struct inode *dir,const char *name,struct buffer_head **res_bh, + struct msdos_dir_entry **res_de,int *ino,char scantype); +extern int fat_parent_ino(struct inode *dir,int locked); +extern int fat_subdirs(struct inode *dir); /* fat.c */ - extern int fat_access(struct super_block *sb,int nr,int new_value); -extern int msdos_smap(struct inode *inode,int sector); +extern int fat_smap(struct inode *inode,int sector); extern int fat_free(struct inode *inode,int skip); +void fat_cache_inval_inode(struct inode *inode); +void fat_cache_inval_dev(kdev_t device); extern void cache_init(void); void cache_lookup(struct inode *inode,int cluster,int *f_clu,int *d_clu); void cache_add(struct inode *inode,int f_clu,int d_clu); -void cache_inval_inode(struct inode *inode); -void cache_inval_dev(int device); int get_cluster(struct inode *inode,int cluster); -/* namei.c */ - -extern int msdos_lookup(struct inode *dir,const char *name,int len, - struct inode **result); -extern int msdos_create(struct inode *dir,const char *name,int len,int mode, - struct inode **result); -extern int msdos_mkdir(struct inode *dir,const char *name,int len,int mode); -extern int msdos_rmdir(struct inode *dir,const char *name,int len); -extern int msdos_unlink(struct inode *dir,const char *name,int len); -extern int msdos_unlink_umsdos(struct inode *dir,const char *name,int len); -extern int msdos_rename(struct inode *old_dir,const char *old_name,int old_len, - struct inode *new_dir,const char *new_name,int new_len); - /* inode.c */ - -extern void msdos_put_inode(struct inode *inode); +extern int fat_bmap(struct inode *inode,int block); +extern int fat_notify_change(struct inode *,struct iattr *); +extern void fat_put_inode(struct inode *inode); +extern void fat_put_super(struct super_block *sb); +extern void fat_read_inode(struct inode *inode, struct inode_operations *dir_ops); +extern struct super_block *fat_read_super(struct super_block *s, void *data, int silent); extern void msdos_put_super(struct super_block *sb); -extern struct super_block *msdos_read_super(struct super_block *s, - void *data,int); -extern void msdos_statfs(struct super_block *sb,struct statfs *buf, int); -extern int msdos_bmap(struct inode *inode,int block); -extern void msdos_read_inode(struct inode *inode); -extern void msdos_write_inode(struct inode *inode); -extern int msdos_notify_change(struct inode *,struct iattr *); +extern void fat_statfs(struct super_block *sb,struct statfs *buf, int); +extern void fat_write_inode(struct inode *inode); /* dir.c */ +extern struct file_operations fat_dir_operations; +extern int fat_readdirx(struct inode *inode, struct file *filp, void *dirent, + fat_filldir_t fat_filldir, filldir_t filldir, + int shortnames, int longnames, int both); +extern int fat_readdir(struct inode *inode, struct file *filp, + void *dirent, filldir_t); +extern int fat_dir_ioctl(struct inode * inode, struct file * filp, + unsigned int cmd, unsigned long arg); -extern struct inode_operations msdos_dir_inode_operations; -extern int msdos_readdir (struct inode *inode, struct file *filp, - void *dirent, filldir_t); /* file.c */ +extern struct inode_operations fat_file_inode_operations; +extern struct inode_operations fat_file_inode_operations_1024; +extern long fat_file_read(struct inode *, struct file *, char *, unsigned long); +extern long fat_file_write(struct inode *, struct file *, const char *, unsigned long); +extern void fat_truncate(struct inode *inode); -extern struct inode_operations msdos_file_inode_operations; -extern struct inode_operations msdos_file_inode_operations_1024; -extern int msdos_file_read(struct inode *, struct file *, char *, int); -extern int msdos_file_write(struct inode *, struct file *, char *, int); -extern struct inode_operations msdos_file_inode_operations_no_bmap; +/* mmap.c */ +extern int fat_mmap(struct inode *, struct file *, struct vm_area_struct *); -extern void msdos_truncate(struct inode *inode); -/* mmap.c */ -extern int msdos_mmap(struct inode *, struct file *, struct vm_area_struct *); +/* vfat.c */ +extern int init_vfat_fs(void); + + +/* msdosfs_syms.c */ +extern int init_msdos_fs(void); +extern struct file_system_type msdos_fs_type; + +/* msdos.c */ +extern struct super_block *msdos_read_super(struct super_block *sb,void *data, int silent); + +/* msdos.c - these are for Umsdos */ +extern void msdos_read_inode(struct inode *inode); +extern int msdos_lookup(struct inode *dir,const char *name,int len, + struct inode **result); +extern int msdos_create(struct inode *dir,const char *name,int len,int mode, + struct inode **result); +extern int msdos_rmdir(struct inode *dir,const char *name,int len); +extern int msdos_mkdir(struct inode *dir,const char *name,int len,int mode); +extern int msdos_unlink(struct inode *dir,const char *name,int len); +extern int msdos_unlink_umsdos(struct inode *dir,const char *name,int len); +extern int msdos_rename(struct inode *old_dir,const char *old_name,int old_len, + struct inode *new_dir,const char *new_name,int new_len, + int must_be_dir); + +/* fatfs_syms.c */ +extern int init_fat_fs(void); + +/* vfat/namei.c - these are for dmsdos */ +extern int vfat_create(struct inode *dir,const char *name,int len,int mode, + struct inode **result); +extern int vfat_unlink(struct inode *dir,const char *name,int len); +extern int vfat_mkdir(struct inode *dir,const char *name,int len,int mode); +extern int vfat_rmdir(struct inode *dir,const char *name,int len); +extern int vfat_rename(struct inode *old_dir,const char *old_name,int old_len, + struct inode *new_dir,const char *new_name,int new_len, + int must_be_dir); +extern void vfat_put_super(struct super_block *sb); +extern struct super_block *vfat_read_super(struct super_block *sb,void *data, + int silent); +extern void vfat_read_inode(struct inode *inode); +extern int vfat_lookup(struct inode *dir,const char *name,int len, + struct inode **result); #endif /* __KERNEL__ */ |