fs/ufs/ufs_fs.h

1 /* SPDX-License-Identifier: GPL-2.0 */
6  * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu)
12  * 64-bit clean thanks to Maciej W. Rozycki <macro@ds2.pg.gda.pl>
16  * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>.
63  * A filesystem is described by its super-block, which in turn
64  * describes the cylinder groups.  The super-block is critical
67  * super-block data does not change, so the copies need not be
72  *      [fs->fs_sblkno]         Super-block
73  *      [fs->fs_cblkno]         Cylinder group block
74  *      [fs->fs_iblkno]         Inode blocks
75  *      [fs->fs_dblkno]         Data blocks
87  * given in byte-offset form, so they do not imply a sector size. The
96         { SBLOCK_UFS2, SBLOCK_UFS1, SBLOCK_FLOPPY, SBLOCK_PIGGY, -1 }
134 #define UFS_NDIR_FRAGMENT (UFS_NDADDR << uspi->s_fpbshift)
135 #define UFS_IND_FRAGMENT (UFS_IND_BLOCK << uspi->s_fpbshift)
136 #define UFS_DIND_FRAGMENT (UFS_DIND_BLOCK << uspi->s_fpbshift)
137 #define UFS_TIND_FRAGMENT (UFS_TIND_BLOCK << uspi->s_fpbshift)
152 /* Solaris-specific fs_clean values */
186 #define UFS_42INODEFMT	-1
208 #define ufs_fsbtodb(uspi, b)	((b) << (uspi)->s_fsbtodb)
209 #define	ufs_dbtofsb(uspi, b)	((b) >> (uspi)->s_fsbtodb)
215 #define	ufs_cgbase(c)	(uspi->s_fpg * (c))
216 #define ufs_cgstart(c)	((uspi)->fs_magic == UFS2_MAGIC ?  ufs_cgbase(c) : \
217 	(ufs_cgbase(c)  + uspi->s_cgoffset * ((c) & ~uspi->s_cgmask)))
218 #define	ufs_cgsblock(c)	(ufs_cgstart(c) + uspi->s_sblkno)	/* super blk */
219 #define	ufs_cgcmin(c)	(ufs_cgstart(c) + uspi->s_cblkno)	/* cg block */
220 #define	ufs_cgimin(c)	(ufs_cgstart(c) + uspi->s_iblkno)	/* inode blk */
221 #define	ufs_cgdmin(c)	(ufs_cgstart(c) + uspi->s_dblkno)	/* 1st data */
229 #define	ufs_inotocg(x)		((x) / uspi->s_ipg)
230 #define	ufs_inotocgoff(x)	((x) % uspi->s_ipg)
231 #define	ufs_inotofsba(x)	(((u64)ufs_cgimin(ufs_inotocg(x))) + ufs_inotocgoff(x) / uspi->s_inopf)
232 #define	ufs_inotofsbo(x)	((x) % uspi->s_inopf)
238 	((bno) * uspi->s_nspf / uspi->s_spc)
240 	((UFS_SB(sb)->s_flags & UFS_CG_SUN) ?		      \
241 	 (((((bno) * uspi->s_nspf % uspi->s_spc) %	      \
242 	    uspi->s_nsect) *				      \
243 	   uspi->s_nrpos) / uspi->s_nsect)		      \
245 	((((bno) * uspi->s_nspf % uspi->s_spc / uspi->s_nsect \
246 	* uspi->s_trackskew + (bno) * uspi->s_nspf % uspi->s_spc \
247 	% uspi->s_nsect * uspi->s_interleave) % uspi->s_nsect \
248 	  * uspi->s_nrpos) / uspi->s_npsect))
255 #define ufs_blkoff(loc)		((loc) & uspi->s_qbmask)
256 #define ufs_fragoff(loc)	((loc) & uspi->s_qfmask)
257 #define ufs_lblktosize(blk)	((blk) << uspi->s_bshift)
258 #define ufs_lblkno(loc)		((loc) >> uspi->s_bshift)
259 #define ufs_numfrags(loc)	((loc) >> uspi->s_fshift)
260 #define ufs_blkroundup(size)	(((size) + uspi->s_qbmask) & uspi->s_bmask)
261 #define ufs_fragroundup(size)	(((size) + uspi->s_qfmask) & uspi->s_fmask)
262 #define ufs_fragstoblks(frags)	((frags) >> uspi->s_fpbshift)
263 #define ufs_blkstofrags(blks)	((blks) << uspi->s_fpbshift)
264 #define ufs_fragnum(fsb)	((fsb) & uspi->s_fpbmask)
265 #define ufs_blknum(fsb)		((fsb) & ~uspi->s_fpbmask)
274 #define	UFS2_NOCSPTRS	((128 / sizeof(void *)) - 4)
283 #define UFS_DIR_ROUND			(UFS_DIR_PAD - 1)
335 #define UFS_MULTILABEL   0x20    /* file system is MAC multi-label */
355 	__fs32	fs_sblkno;	/* addr of super-block in filesys */
356 	__fs32	fs_cblkno;	/* offset of cyl-block in filesys */
357 	__fs32	fs_iblkno;	/* offset of inode-blocks in filesys */
361 	__fs32	fs_time;	/* last time written -- time_t */
401 	__fs32	fs_trackskew;	/* sector 0 skew, per track */
421 /* this data must be re-computed after crashes */
426 	__s8	fs_ronly;	/* mounted read-only flag */
440 			__fs64  fs_swuid;		/* system-wide uid */
482 			__fs32	fs_inodefmt;	/* format of on-disk inodes */
507 #define UFS_42POSTBLFMT		-1	/* 4.2BSD rotational table format */
519  * super block lock fs->fs_lock.
523 	(fs32_to_cpu((sb), (ucg)->cg_magic) == CG_MAGIC)
527 #define ufs_ocg_blktot(sb, ucg)      fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg…
528 #define ufs_ocg_blks(sb, ucg, cylno) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg…
529 #define ufs_ocg_inosused(sb, ucg)    fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg…
530 #define ufs_ocg_blksfree(sb, ucg)    fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg…
532 	(fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_magic) == CG_MAGIC)
601  * structure of an on-disk inode
625 	__fs32	ui_flags;		/* 0x64 immutable, append-only... */
688 #define UFS_UF_APPEND     0x00000004  /* append-only */
695 #define UFS_SF_APPEND     0x00040000  /* append-only */
731 	__u32	s_sblkno;	/* offset of super-blocks in filesys */
732 	__u32	s_cblkno;	/* offset of cg-block in filesys */
733 	__u32	s_iblkno;	/* offset of inode-blocks in filesys */
758 	__u32	s_trackskew;	/* sector 0 skew, per track */
873 	__s8	fs_fsmnt[UFS_MAXMNTLEN - 212];
888 			__s8  fs_fsmnt[UFS2_MAXMNTLEN - UFS_MAXMNTLEN + 212];
947 			__fs32	fs_inodefmt;	/* format of on-disk inodes */