| #ifndef _LINUX_SYSV_FS_H | |
| #define _LINUX_SYSV_FS_H | |
| #if defined(__GNUC__) | |
| # define __packed2__ __attribute__((packed, aligned(2))) | |
| #else | |
| >> I want to scream! << | |
| #endif | |
| #ifndef __KERNEL__ | |
| typedef u16 __fs16; | |
| typedef u32 __fs16; | |
| #endif | |
| /* inode numbers are 16 bit */ | |
| typedef __fs16 sysv_ino_t; | |
| /* Block numbers are 24 bit, sometimes stored in 32 bit. | |
| On Coherent FS, they are always stored in PDP-11 manner: the least | |
| significant 16 bits come last. */ | |
| typedef __fs32 sysv_zone_t; | |
| /* 0 is non-existent */ | |
| #define SYSV_BADBL_INO 1 /* inode of bad blocks file */ | |
| #define SYSV_ROOT_INO 2 /* inode of root directory */ | |
| /* Xenix super-block data on disk */ | |
| #define XENIX_NICINOD 100 /* number of inode cache entries */ | |
| #define XENIX_NICFREE 100 /* number of free block list chunk entries */ | |
| struct xenix_super_block { | |
| __fs16 s_isize; /* index of first data zone */ | |
| __fs32 s_fsize __packed2__; /* total number of zones of this fs */ | |
| /* the start of the free block list: */ | |
| __fs16 s_nfree; /* number of free blocks in s_free, <= XENIX_NICFREE */ | |
| sysv_zone_t s_free[XENIX_NICFREE]; /* first free block list chunk */ | |
| /* the cache of free inodes: */ | |
| __fs16 s_ninode; /* number of free inodes in s_inode, <= XENIX_NICINOD */ | |
| sysv_ino_t s_inode[XENIX_NICINOD]; /* some free inodes */ | |
| /* locks, not used by Linux: */ | |
| char s_flock; /* lock during free block list manipulation */ | |
| char s_ilock; /* lock during inode cache manipulation */ | |
| char s_fmod; /* super-block modified flag */ | |
| char s_ronly; /* flag whether fs is mounted read-only */ | |
| __fs32 s_time __packed2__; /* time of last super block update */ | |
| __fs32 s_tfree __packed2__; /* total number of free zones */ | |
| __fs16 s_tinode; /* total number of free inodes */ | |
| __fs16 s_dinfo[4]; /* device information ?? */ | |
| char s_fname[6]; /* file system volume name */ | |
| char s_fpack[6]; /* file system pack name */ | |
| char s_clean; /* set to 0x46 when filesystem is properly unmounted */ | |
| char s_fill[371]; | |
| s32 s_magic; /* version of file system */ | |
| __fs32 s_type; /* type of file system: 1 for 512 byte blocks | |
| 2 for 1024 byte blocks | |
| 3 for 2048 byte blocks */ | |
| }; | |
| /* | |
| * SystemV FS comes in two variants: | |
| * sysv2: System V Release 2 (e.g. Microport), structure elements aligned(2). | |
| * sysv4: System V Release 4 (e.g. Consensys), structure elements aligned(4). | |
| */ | |
| #define SYSV_NICINOD 100 /* number of inode cache entries */ | |
| #define SYSV_NICFREE 50 /* number of free block list chunk entries */ | |
| /* SystemV4 super-block data on disk */ | |
| struct sysv4_super_block { | |
| __fs16 s_isize; /* index of first data zone */ | |
| u16 s_pad0; | |
| __fs32 s_fsize; /* total number of zones of this fs */ | |
| /* the start of the free block list: */ | |
| __fs16 s_nfree; /* number of free blocks in s_free, <= SYSV_NICFREE */ | |
| u16 s_pad1; | |
| sysv_zone_t s_free[SYSV_NICFREE]; /* first free block list chunk */ | |
| /* the cache of free inodes: */ | |
| __fs16 s_ninode; /* number of free inodes in s_inode, <= SYSV_NICINOD */ | |
| u16 s_pad2; | |
| sysv_ino_t s_inode[SYSV_NICINOD]; /* some free inodes */ | |
| /* locks, not used by Linux: */ | |
| char s_flock; /* lock during free block list manipulation */ | |
| char s_ilock; /* lock during inode cache manipulation */ | |
| char s_fmod; /* super-block modified flag */ | |
| char s_ronly; /* flag whether fs is mounted read-only */ | |
| __fs32 s_time; /* time of last super block update */ | |
| __fs16 s_dinfo[4]; /* device information ?? */ | |
| __fs32 s_tfree; /* total number of free zones */ | |
| __fs16 s_tinode; /* total number of free inodes */ | |
| u16 s_pad3; | |
| char s_fname[6]; /* file system volume name */ | |
| char s_fpack[6]; /* file system pack name */ | |
| s32 s_fill[12]; | |
| __fs32 s_state; /* file system state: 0x7c269d38-s_time means clean */ | |
| s32 s_magic; /* version of file system */ | |
| __fs32 s_type; /* type of file system: 1 for 512 byte blocks | |
| 2 for 1024 byte blocks */ | |
| }; | |
| /* SystemV2 super-block data on disk */ | |
| struct sysv2_super_block { | |
| __fs16 s_isize; /* index of first data zone */ | |
| __fs32 s_fsize __packed2__; /* total number of zones of this fs */ | |
| /* the start of the free block list: */ | |
| __fs16 s_nfree; /* number of free blocks in s_free, <= SYSV_NICFREE */ | |
| sysv_zone_t s_free[SYSV_NICFREE]; /* first free block list chunk */ | |
| /* the cache of free inodes: */ | |
| __fs16 s_ninode; /* number of free inodes in s_inode, <= SYSV_NICINOD */ | |
| sysv_ino_t s_inode[SYSV_NICINOD]; /* some free inodes */ | |
| /* locks, not used by Linux: */ | |
| char s_flock; /* lock during free block list manipulation */ | |
| char s_ilock; /* lock during inode cache manipulation */ | |
| char s_fmod; /* super-block modified flag */ | |
| char s_ronly; /* flag whether fs is mounted read-only */ | |
| __fs32 s_time __packed2__; /* time of last super block update */ | |
| __fs16 s_dinfo[4]; /* device information ?? */ | |
| __fs32 s_tfree __packed2__; /* total number of free zones */ | |
| __fs16 s_tinode; /* total number of free inodes */ | |
| char s_fname[6]; /* file system volume name */ | |
| char s_fpack[6]; /* file system pack name */ | |
| s32 s_fill[14]; | |
| __fs32 s_state; /* file system state: 0xcb096f43 means clean */ | |
| s32 s_magic; /* version of file system */ | |
| __fs32 s_type; /* type of file system: 1 for 512 byte blocks | |
| 2 for 1024 byte blocks */ | |
| }; | |
| /* V7 super-block data on disk */ | |
| #define V7_NICINOD 100 /* number of inode cache entries */ | |
| #define V7_NICFREE 50 /* number of free block list chunk entries */ | |
| struct v7_super_block { | |
| __fs16 s_isize; /* index of first data zone */ | |
| __fs32 s_fsize __packed2__; /* total number of zones of this fs */ | |
| /* the start of the free block list: */ | |
| __fs16 s_nfree; /* number of free blocks in s_free, <= V7_NICFREE */ | |
| sysv_zone_t s_free[V7_NICFREE]; /* first free block list chunk */ | |
| /* the cache of free inodes: */ | |
| __fs16 s_ninode; /* number of free inodes in s_inode, <= V7_NICINOD */ | |
| sysv_ino_t s_inode[V7_NICINOD]; /* some free inodes */ | |
| /* locks, not used by Linux or V7: */ | |
| char s_flock; /* lock during free block list manipulation */ | |
| char s_ilock; /* lock during inode cache manipulation */ | |
| char s_fmod; /* super-block modified flag */ | |
| char s_ronly; /* flag whether fs is mounted read-only */ | |
| __fs32 s_time __packed2__; /* time of last super block update */ | |
| /* the following fields are not maintained by V7: */ | |
| __fs32 s_tfree __packed2__; /* total number of free zones */ | |
| __fs16 s_tinode; /* total number of free inodes */ | |
| __fs16 s_m; /* interleave factor */ | |
| __fs16 s_n; /* interleave factor */ | |
| char s_fname[6]; /* file system name */ | |
| char s_fpack[6]; /* file system pack name */ | |
| }; | |
| /* Coherent super-block data on disk */ | |
| #define COH_NICINOD 100 /* number of inode cache entries */ | |
| #define COH_NICFREE 64 /* number of free block list chunk entries */ | |
| struct coh_super_block { | |
| __fs16 s_isize; /* index of first data zone */ | |
| __fs32 s_fsize __packed2__; /* total number of zones of this fs */ | |
| /* the start of the free block list: */ | |
| __fs16 s_nfree; /* number of free blocks in s_free, <= COH_NICFREE */ | |
| sysv_zone_t s_free[COH_NICFREE] __packed2__; /* first free block list chunk */ | |
| /* the cache of free inodes: */ | |
| __fs16 s_ninode; /* number of free inodes in s_inode, <= COH_NICINOD */ | |
| sysv_ino_t s_inode[COH_NICINOD]; /* some free inodes */ | |
| /* locks, not used by Linux: */ | |
| char s_flock; /* lock during free block list manipulation */ | |
| char s_ilock; /* lock during inode cache manipulation */ | |
| char s_fmod; /* super-block modified flag */ | |
| char s_ronly; /* flag whether fs is mounted read-only */ | |
| __fs32 s_time __packed2__; /* time of last super block update */ | |
| __fs32 s_tfree __packed2__; /* total number of free zones */ | |
| __fs16 s_tinode; /* total number of free inodes */ | |
| __fs16 s_interleave_m; /* interleave factor */ | |
| __fs16 s_interleave_n; | |
| char s_fname[6]; /* file system volume name */ | |
| char s_fpack[6]; /* file system pack name */ | |
| __fs32 s_unique; /* zero, not used */ | |
| }; | |
| /* SystemV/Coherent inode data on disk */ | |
| struct sysv_inode { | |
| __fs16 i_mode; | |
| __fs16 i_nlink; | |
| __fs16 i_uid; | |
| __fs16 i_gid; | |
| __fs32 i_size; | |
| u8 i_data[3*(10+1+1+1)]; | |
| u8 i_gen; | |
| __fs32 i_atime; /* time of last access */ | |
| __fs32 i_mtime; /* time of last modification */ | |
| __fs32 i_ctime; /* time of creation */ | |
| }; | |
| /* SystemV/Coherent directory entry on disk */ | |
| #define SYSV_NAMELEN 14 /* max size of name in struct sysv_dir_entry */ | |
| struct sysv_dir_entry { | |
| sysv_ino_t inode; | |
| char name[SYSV_NAMELEN]; /* up to 14 characters, the rest are zeroes */ | |
| }; | |
| #define SYSV_DIRSIZE sizeof(struct sysv_dir_entry) /* size of every directory entry */ | |
| #endif /* _LINUX_SYSV_FS_H */ |