WebSVN - shark - Blame - Rev 422 - /shark/trunk/drivers/linuxc26/include/linux/sysv

Rev	Author	Line No.	Line
422	giacomo	1	#ifndef _LINUX_SYSV_FS_H
		2	#define _LINUX_SYSV_FS_H
		3
		4	#if defined(__GNUC__)
		5	# define __packed2__ __attribute__((packed, aligned(2)))
		6	#else
		7	>> I want to scream! <<
		8	#endif
		9
		10
		11	/* inode numbers are 16 bit */
		12	typedef u16 sysv_ino_t;
		13
		14	/* Block numbers are 24 bit, sometimes stored in 32 bit.
		15	On Coherent FS, they are always stored in PDP-11 manner: the least
		16	significant 16 bits come last. */
		17	typedef u32 sysv_zone_t;
		18
		19	/* 0 is non-existent */
		20	#define SYSV_BADBL_INO 1 /* inode of bad blocks file */
		21	#define SYSV_ROOT_INO 2 /* inode of root directory */
		22
		23
		24	/* Xenix super-block data on disk */
		25	#define XENIX_NICINOD 100 /* number of inode cache entries */
		26	#define XENIX_NICFREE 100 /* number of free block list chunk entries */
		27	struct xenix_super_block {
		28	u16 s_isize; /* index of first data zone */
		29	u32 s_fsize __packed2__; /* total number of zones of this fs */
		30	/* the start of the free block list: */
		31	u16 s_nfree; /* number of free blocks in s_free, <= XENIX_NICFREE */
		32	u32 s_free[XENIX_NICFREE]; /* first free block list chunk */
		33	/* the cache of free inodes: */
		34	u16 s_ninode; /* number of free inodes in s_inode, <= XENIX_NICINOD */
		35	sysv_ino_t s_inode[XENIX_NICINOD]; /* some free inodes */
		36	/* locks, not used by Linux: */
		37	char s_flock; /* lock during free block list manipulation */
		38	char s_ilock; /* lock during inode cache manipulation */
		39	char s_fmod; /* super-block modified flag */
		40	char s_ronly; /* flag whether fs is mounted read-only */
		41	u32 s_time __packed2__; /* time of last super block update */
		42	u32 s_tfree __packed2__; /* total number of free zones */
		43	u16 s_tinode; /* total number of free inodes */
		44	s16 s_dinfo[4]; /* device information ?? */
		45	char s_fname[6]; /* file system volume name */
		46	char s_fpack[6]; /* file system pack name */
		47	char s_clean; /* set to 0x46 when filesystem is properly unmounted */
		48	char s_fill[371];
		49	s32 s_magic; /* version of file system */
		50	s32 s_type; /* type of file system: 1 for 512 byte blocks
		51	2 for 1024 byte blocks
		52	3 for 2048 byte blocks */
		53
		54	};
		55
		56	/*
		57	* SystemV FS comes in two variants:
		58	* sysv2: System V Release 2 (e.g. Microport), structure elements aligned(2).
		59	* sysv4: System V Release 4 (e.g. Consensys), structure elements aligned(4).
		60	*/
		61	#define SYSV_NICINOD 100 /* number of inode cache entries */
		62	#define SYSV_NICFREE 50 /* number of free block list chunk entries */
		63
		64	/* SystemV4 super-block data on disk */
		65	struct sysv4_super_block {
		66	u16 s_isize; /* index of first data zone */
		67	u16 s_pad0;
		68	u32 s_fsize; /* total number of zones of this fs */
		69	/* the start of the free block list: */
		70	u16 s_nfree; /* number of free blocks in s_free, <= SYSV_NICFREE */
		71	u16 s_pad1;
		72	u32 s_free[SYSV_NICFREE]; /* first free block list chunk */
		73	/* the cache of free inodes: */
		74	u16 s_ninode; /* number of free inodes in s_inode, <= SYSV_NICINOD */
		75	u16 s_pad2;
		76	sysv_ino_t s_inode[SYSV_NICINOD]; /* some free inodes */
		77	/* locks, not used by Linux: */
		78	char s_flock; /* lock during free block list manipulation */
		79	char s_ilock; /* lock during inode cache manipulation */
		80	char s_fmod; /* super-block modified flag */
		81	char s_ronly; /* flag whether fs is mounted read-only */
		82	u32 s_time; /* time of last super block update */
		83	s16 s_dinfo[4]; /* device information ?? */
		84	u32 s_tfree; /* total number of free zones */
		85	u16 s_tinode; /* total number of free inodes */
		86	u16 s_pad3;
		87	char s_fname[6]; /* file system volume name */
		88	char s_fpack[6]; /* file system pack name */
		89	s32 s_fill[12];
		90	s32 s_state; /* file system state: 0x7c269d38-s_time means clean */
		91	s32 s_magic; /* version of file system */
		92	s32 s_type; /* type of file system: 1 for 512 byte blocks
		93	2 for 1024 byte blocks */
		94	};
		95
		96	/* SystemV2 super-block data on disk */
		97	struct sysv2_super_block {
		98	u16 s_isize; /* index of first data zone */
		99	u32 s_fsize __packed2__; /* total number of zones of this fs */
		100	/* the start of the free block list: */
		101	u16 s_nfree; /* number of free blocks in s_free, <= SYSV_NICFREE */
		102	u32 s_free[SYSV_NICFREE]; /* first free block list chunk */
		103	/* the cache of free inodes: */
		104	u16 s_ninode; /* number of free inodes in s_inode, <= SYSV_NICINOD */
		105	sysv_ino_t s_inode[SYSV_NICINOD]; /* some free inodes */
		106	/* locks, not used by Linux: */
		107	char s_flock; /* lock during free block list manipulation */
		108	char s_ilock; /* lock during inode cache manipulation */
		109	char s_fmod; /* super-block modified flag */
		110	char s_ronly; /* flag whether fs is mounted read-only */
		111	u32 s_time __packed2__; /* time of last super block update */
		112	s16 s_dinfo[4]; /* device information ?? */
		113	u32 s_tfree __packed2__; /* total number of free zones */
		114	u16 s_tinode; /* total number of free inodes */
		115	char s_fname[6]; /* file system volume name */
		116	char s_fpack[6]; /* file system pack name */
		117	s32 s_fill[14];
		118	s32 s_state; /* file system state: 0xcb096f43 means clean */
		119	s32 s_magic; /* version of file system */
		120	s32 s_type; /* type of file system: 1 for 512 byte blocks
		121	2 for 1024 byte blocks */
		122	};
		123
		124	/* V7 super-block data on disk */
		125	#define V7_NICINOD 100 /* number of inode cache entries */
		126	#define V7_NICFREE 50 /* number of free block list chunk entries */
		127	struct v7_super_block {
		128	u16 s_isize; /* index of first data zone */
		129	u32 s_fsize __packed2__; /* total number of zones of this fs */
		130	/* the start of the free block list: */
		131	u16 s_nfree; /* number of free blocks in s_free, <= V7_NICFREE */
		132	u32 s_free[V7_NICFREE]; /* first free block list chunk */
		133	/* the cache of free inodes: */
		134	u16 s_ninode; /* number of free inodes in s_inode, <= V7_NICINOD */
		135	sysv_ino_t s_inode[V7_NICINOD]; /* some free inodes */
		136	/* locks, not used by Linux or V7: */
		137	char s_flock; /* lock during free block list manipulation */
		138	char s_ilock; /* lock during inode cache manipulation */
		139	char s_fmod; /* super-block modified flag */
		140	char s_ronly; /* flag whether fs is mounted read-only */
		141	u32 s_time __packed2__; /* time of last super block update */
		142	/* the following fields are not maintained by V7: */
		143	u32 s_tfree __packed2__; /* total number of free zones */
		144	u16 s_tinode; /* total number of free inodes */
		145	u16 s_m; /* interleave factor */
		146	u16 s_n; /* interleave factor */
		147	char s_fname[6]; /* file system name */
		148	char s_fpack[6]; /* file system pack name */
		149	};
		150
		151	/* Coherent super-block data on disk */
		152	#define COH_NICINOD 100 /* number of inode cache entries */
		153	#define COH_NICFREE 64 /* number of free block list chunk entries */
		154	struct coh_super_block {
		155	u16 s_isize; /* index of first data zone */
		156	u32 s_fsize __packed2__; /* total number of zones of this fs */
		157	/* the start of the free block list: */
		158	u16 s_nfree; /* number of free blocks in s_free, <= COH_NICFREE */
		159	u32 s_free[COH_NICFREE] __packed2__; /* first free block list chunk */
		160	/* the cache of free inodes: */
		161	u16 s_ninode; /* number of free inodes in s_inode, <= COH_NICINOD */
		162	sysv_ino_t s_inode[COH_NICINOD]; /* some free inodes */
		163	/* locks, not used by Linux: */
		164	char s_flock; /* lock during free block list manipulation */
		165	char s_ilock; /* lock during inode cache manipulation */
		166	char s_fmod; /* super-block modified flag */
		167	char s_ronly; /* flag whether fs is mounted read-only */
		168	u32 s_time __packed2__; /* time of last super block update */
		169	u32 s_tfree __packed2__; /* total number of free zones */
		170	u16 s_tinode; /* total number of free inodes */
		171	u16 s_interleave_m; /* interleave factor */
		172	u16 s_interleave_n;
		173	char s_fname[6]; /* file system volume name */
		174	char s_fpack[6]; /* file system pack name */
		175	u32 s_unique; /* zero, not used */
		176	};
		177
		178	/* SystemV/Coherent inode data on disk */
		179	struct sysv_inode {
		180	u16 i_mode;
		181	u16 i_nlink;
		182	u16 i_uid;
		183	u16 i_gid;
		184	u32 i_size;
		185	u8 i_data[3*(10+1+1+1)];
		186	u8 i_gen;
		187	u32 i_atime; /* time of last access */
		188	u32 i_mtime; /* time of last modification */
		189	u32 i_ctime; /* time of creation */
		190	};
		191
		192	/* SystemV/Coherent directory entry on disk */
		193	#define SYSV_NAMELEN 14 /* max size of name in struct sysv_dir_entry */
		194	struct sysv_dir_entry {
		195	sysv_ino_t inode;
		196	char name[SYSV_NAMELEN]; /* up to 14 characters, the rest are zeroes */
		197	};
		198
		199	#define SYSV_DIRSIZE sizeof(struct sysv_dir_entry) /* size of every directory entry */
		200
		201	#endif /* _LINUX_SYSV_FS_H */

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