blob: 6943ec677c0bef0feaca7efa2cee4202ee9949db [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/include/linux/ufs_fs.h
3 *
4 * Copyright (C) 1996
5 * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu)
6 * Laboratory for Computer Science Research Computing Facility
7 * Rutgers, The State University of New Jersey
8 *
9 * Clean swab support by Fare <fare@tunes.org>
10 * just hope no one is using NNUUXXI on __?64 structure elements
11 * 64-bit clean thanks to Maciej W. Rozycki <macro@ds2.pg.gda.pl>
12 *
13 * 4.4BSD (FreeBSD) support added on February 1st 1998 by
14 * Niels Kristian Bech Jensen <nkbj@image.dk> partially based
15 * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>.
16 *
17 * NeXTstep support added on February 5th 1998 by
18 * Niels Kristian Bech Jensen <nkbj@image.dk>.
19 *
20 * Write support by Daniel Pirkl <daniel.pirkl@email.cz>
21 *
22 * HP/UX hfs filesystem support added by
23 * Martin K. Petersen <mkp@mkp.net>, August 1999
24 *
25 * UFS2 (of FreeBSD 5.x) support added by
26 * Niraj Kumar <niraj17@iitbombay.org> , Jan 2004
27 *
28 */
29
30#ifndef __LINUX_UFS_FS_H
31#define __LINUX_UFS_FS_H
32
33#include <linux/types.h>
34#include <linux/kernel.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070035#include <linux/stat.h>
36#include <linux/fs.h>
37
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -080038#include <asm/div64.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070039typedef __u64 __bitwise __fs64;
40typedef __u32 __bitwise __fs32;
41typedef __u16 __bitwise __fs16;
Linus Torvalds1da177e2005-04-16 15:20:36 -070042
Linus Torvalds1da177e2005-04-16 15:20:36 -070043#define UFS_BBLOCK 0
44#define UFS_BBSIZE 8192
45#define UFS_SBLOCK 8192
46#define UFS_SBSIZE 8192
47
48#define UFS_SECTOR_SIZE 512
49#define UFS_SECTOR_BITS 9
50#define UFS_MAGIC 0x00011954
51#define UFS2_MAGIC 0x19540119
52#define UFS_CIGAM 0x54190100 /* byteswapped MAGIC */
53
54/* Copied from FreeBSD */
55/*
56 * Each disk drive contains some number of filesystems.
57 * A filesystem consists of a number of cylinder groups.
58 * Each cylinder group has inodes and data.
59 *
60 * A filesystem is described by its super-block, which in turn
61 * describes the cylinder groups. The super-block is critical
62 * data and is replicated in each cylinder group to protect against
63 * catastrophic loss. This is done at `newfs' time and the critical
64 * super-block data does not change, so the copies need not be
65 * referenced further unless disaster strikes.
66 *
67 * For filesystem fs, the offsets of the various blocks of interest
68 * are given in the super block as:
69 * [fs->fs_sblkno] Super-block
70 * [fs->fs_cblkno] Cylinder group block
71 * [fs->fs_iblkno] Inode blocks
72 * [fs->fs_dblkno] Data blocks
73 * The beginning of cylinder group cg in fs, is given by
74 * the ``cgbase(fs, cg)'' macro.
75 *
76 * Depending on the architecture and the media, the superblock may
77 * reside in any one of four places. For tiny media where every block
78 * counts, it is placed at the very front of the partition. Historically,
79 * UFS1 placed it 8K from the front to leave room for the disk label and
80 * a small bootstrap. For UFS2 it got moved to 64K from the front to leave
81 * room for the disk label and a bigger bootstrap, and for really piggy
82 * systems we check at 256K from the front if the first three fail. In
83 * all cases the size of the superblock will be SBLOCKSIZE. All values are
84 * given in byte-offset form, so they do not imply a sector size. The
85 * SBLOCKSEARCH specifies the order in which the locations should be searched.
86 */
87#define SBLOCK_FLOPPY 0
88#define SBLOCK_UFS1 8192
89#define SBLOCK_UFS2 65536
90#define SBLOCK_PIGGY 262144
91#define SBLOCKSIZE 8192
92#define SBLOCKSEARCH \
93 { SBLOCK_UFS2, SBLOCK_UFS1, SBLOCK_FLOPPY, SBLOCK_PIGGY, -1 }
94
95
96/* HP specific MAGIC values */
97
98#define UFS_MAGIC_LFN 0x00095014 /* fs supports filenames > 14 chars */
99#define UFS_CIGAM_LFN 0x14500900 /* srahc 41 < semanelif stroppus sf */
100
101#define UFS_MAGIC_SEC 0x00612195 /* B1 security fs */
102#define UFS_CIGAM_SEC 0x95216100
103
104#define UFS_MAGIC_FEA 0x00195612 /* fs_featurebits supported */
105#define UFS_CIGAM_FEA 0x12561900
106
107#define UFS_MAGIC_4GB 0x05231994 /* fs > 4 GB && fs_featurebits */
108#define UFS_CIGAM_4GB 0x94192305
109
110/* Seems somebody at HP goofed here. B1 and lfs are both 0x2 !?! */
111#define UFS_FSF_LFN 0x00000001 /* long file names */
112#define UFS_FSF_B1 0x00000002 /* B1 security */
113#define UFS_FSF_LFS 0x00000002 /* large files */
114#define UFS_FSF_LUID 0x00000004 /* large UIDs */
115
116/* End of HP stuff */
117
118
119#define UFS_BSIZE 8192
120#define UFS_MINBSIZE 4096
121#define UFS_FSIZE 1024
122#define UFS_MAXFRAG (UFS_BSIZE / UFS_FSIZE)
123
124#define UFS_NDADDR 12
125#define UFS_NINDIR 3
126
127#define UFS_IND_BLOCK (UFS_NDADDR + 0)
128#define UFS_DIND_BLOCK (UFS_NDADDR + 1)
129#define UFS_TIND_BLOCK (UFS_NDADDR + 2)
130
131#define UFS_NDIR_FRAGMENT (UFS_NDADDR << uspi->s_fpbshift)
132#define UFS_IND_FRAGMENT (UFS_IND_BLOCK << uspi->s_fpbshift)
133#define UFS_DIND_FRAGMENT (UFS_DIND_BLOCK << uspi->s_fpbshift)
134#define UFS_TIND_FRAGMENT (UFS_TIND_BLOCK << uspi->s_fpbshift)
135
136#define UFS_ROOTINO 2
137#define UFS_FIRST_INO (UFS_ROOTINO + 1)
138
139#define UFS_USEEFT ((__u16)65535)
140
Alex Viskovatoffb3a0fd42010-03-10 15:21:53 -0800141/* fs_clean values */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142#define UFS_FSOK 0x7c269d38
Andreas Schwab9d923a02006-02-03 03:04:12 -0800143#define UFS_FSACTIVE ((__s8)0x00)
144#define UFS_FSCLEAN ((__s8)0x01)
145#define UFS_FSSTABLE ((__s8)0x02)
146#define UFS_FSOSF1 ((__s8)0x03) /* is this correct for DEC OSF/1? */
147#define UFS_FSBAD ((__s8)0xff)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148
Alex Viskovatoffb3a0fd42010-03-10 15:21:53 -0800149/* Solaris-specific fs_clean values */
150#define UFS_FSSUSPEND ((__s8)0xfe) /* temporarily suspended */
151#define UFS_FSLOG ((__s8)0xfd) /* logging fs */
152#define UFS_FSFIX ((__s8)0xfc) /* being repaired while mounted */
153
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154/* From here to next blank line, s_flags for ufs_sb_info */
155/* directory entry encoding */
156#define UFS_DE_MASK 0x00000010 /* mask for the following */
157#define UFS_DE_OLD 0x00000000
158#define UFS_DE_44BSD 0x00000010
159/* uid encoding */
160#define UFS_UID_MASK 0x00000060 /* mask for the following */
161#define UFS_UID_OLD 0x00000000
162#define UFS_UID_44BSD 0x00000020
163#define UFS_UID_EFT 0x00000040
164/* superblock state encoding */
165#define UFS_ST_MASK 0x00000700 /* mask for the following */
166#define UFS_ST_OLD 0x00000000
167#define UFS_ST_44BSD 0x00000100
Mark Fortescue252e2112007-10-16 23:26:31 -0700168#define UFS_ST_SUN 0x00000200 /* Solaris */
169#define UFS_ST_SUNOS 0x00000300
170#define UFS_ST_SUNx86 0x00000400 /* Solaris x86 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171/*cylinder group encoding */
172#define UFS_CG_MASK 0x00003000 /* mask for the following */
173#define UFS_CG_OLD 0x00000000
174#define UFS_CG_44BSD 0x00002000
175#define UFS_CG_SUN 0x00001000
176/* filesystem type encoding */
177#define UFS_TYPE_MASK 0x00010000 /* mask for the following */
178#define UFS_TYPE_UFS1 0x00000000
179#define UFS_TYPE_UFS2 0x00010000
180
181
182/* fs_inodefmt options */
183#define UFS_42INODEFMT -1
184#define UFS_44INODEFMT 2
185
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186/*
187 * MINFREE gives the minimum acceptable percentage of file system
188 * blocks which may be free. If the freelist drops below this level
189 * only the superuser may continue to allocate blocks. This may
190 * be set to 0 if no reserve of free blocks is deemed necessary,
191 * however throughput drops by fifty percent if the file system
192 * is run at between 95% and 100% full; thus the minimum default
193 * value of fs_minfree is 5%. However, to get good clustering
194 * performance, 10% is a better choice. hence we use 10% as our
195 * default value. With 10% free space, fragmentation is not a
196 * problem, so we choose to optimize for time.
197 */
198#define UFS_MINFREE 5
199#define UFS_DEFAULTOPT UFS_OPTTIME
Mike Frysingere5420592008-02-08 04:21:31 -0800200
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201/*
202 * Turn file system block numbers into disk block addresses.
203 * This maps file system blocks to device size blocks.
204 */
205#define ufs_fsbtodb(uspi, b) ((b) << (uspi)->s_fsbtodb)
206#define ufs_dbtofsb(uspi, b) ((b) >> (uspi)->s_fsbtodb)
207
208/*
209 * Cylinder group macros to locate things in cylinder groups.
210 * They calc file system addresses of cylinder group data structures.
211 */
212#define ufs_cgbase(c) (uspi->s_fpg * (c))
213#define ufs_cgstart(c) ((uspi)->fs_magic == UFS2_MAGIC ? ufs_cgbase(c) : \
214 (ufs_cgbase(c) + uspi->s_cgoffset * ((c) & ~uspi->s_cgmask)))
215#define ufs_cgsblock(c) (ufs_cgstart(c) + uspi->s_sblkno) /* super blk */
216#define ufs_cgcmin(c) (ufs_cgstart(c) + uspi->s_cblkno) /* cg block */
217#define ufs_cgimin(c) (ufs_cgstart(c) + uspi->s_iblkno) /* inode blk */
218#define ufs_cgdmin(c) (ufs_cgstart(c) + uspi->s_dblkno) /* 1st data */
219
220/*
221 * Macros for handling inode numbers:
222 * inode number to file system block offset.
223 * inode number to cylinder group number.
224 * inode number to file system block address.
225 */
226#define ufs_inotocg(x) ((x) / uspi->s_ipg)
227#define ufs_inotocgoff(x) ((x) % uspi->s_ipg)
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800228#define ufs_inotofsba(x) (((u64)ufs_cgimin(ufs_inotocg(x))) + ufs_inotocgoff(x) / uspi->s_inopf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229#define ufs_inotofsbo(x) ((x) % uspi->s_inopf)
230
231/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 * Compute the cylinder and rotational position of a cyl block addr.
233 */
234#define ufs_cbtocylno(bno) \
235 ((bno) * uspi->s_nspf / uspi->s_spc)
Evgeniy Dushistovad25ad92010-03-10 15:21:55 -0800236#define ufs_cbtorpos(bno) \
237 ((UFS_SB(sb)->s_flags & UFS_CG_SUN) ? \
238 (((((bno) * uspi->s_nspf % uspi->s_spc) % \
239 uspi->s_nsect) * \
240 uspi->s_nrpos) / uspi->s_nsect) \
241 : \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242 ((((bno) * uspi->s_nspf % uspi->s_spc / uspi->s_nsect \
243 * uspi->s_trackskew + (bno) * uspi->s_nspf % uspi->s_spc \
244 % uspi->s_nsect * uspi->s_interleave) % uspi->s_nsect \
Evgeniy Dushistovad25ad92010-03-10 15:21:55 -0800245 * uspi->s_nrpos) / uspi->s_npsect))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246
247/*
248 * The following macros optimize certain frequently calculated
249 * quantities by using shifts and masks in place of divisions
250 * modulos and multiplications.
251 */
252#define ufs_blkoff(loc) ((loc) & uspi->s_qbmask)
253#define ufs_fragoff(loc) ((loc) & uspi->s_qfmask)
254#define ufs_lblktosize(blk) ((blk) << uspi->s_bshift)
255#define ufs_lblkno(loc) ((loc) >> uspi->s_bshift)
256#define ufs_numfrags(loc) ((loc) >> uspi->s_fshift)
257#define ufs_blkroundup(size) (((size) + uspi->s_qbmask) & uspi->s_bmask)
258#define ufs_fragroundup(size) (((size) + uspi->s_qfmask) & uspi->s_fmask)
259#define ufs_fragstoblks(frags) ((frags) >> uspi->s_fpbshift)
260#define ufs_blkstofrags(blks) ((blks) << uspi->s_fpbshift)
261#define ufs_fragnum(fsb) ((fsb) & uspi->s_fpbmask)
262#define ufs_blknum(fsb) ((fsb) & ~uspi->s_fpbmask)
263
264#define UFS_MAXNAMLEN 255
265#define UFS_MAXMNTLEN 512
266#define UFS2_MAXMNTLEN 468
267#define UFS2_MAXVOLLEN 32
Mike Frysingereb585702007-02-12 00:52:27 -0800268#define UFS_MAXCSBUFS 31
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269#define UFS_LINK_MAX 32000
270/*
271#define UFS2_NOCSPTRS ((128 / sizeof(void *)) - 4)
272*/
273#define UFS2_NOCSPTRS 28
274
275/*
276 * UFS_DIR_PAD defines the directory entries boundaries
277 * (must be a multiple of 4)
278 */
279#define UFS_DIR_PAD 4
280#define UFS_DIR_ROUND (UFS_DIR_PAD - 1)
281#define UFS_DIR_REC_LEN(name_len) (((name_len) + 1 + 8 + UFS_DIR_ROUND) & ~UFS_DIR_ROUND)
282
283struct ufs_timeval {
284 __fs32 tv_sec;
285 __fs32 tv_usec;
286};
287
288struct ufs_dir_entry {
289 __fs32 d_ino; /* inode number of this entry */
290 __fs16 d_reclen; /* length of this entry */
291 union {
292 __fs16 d_namlen; /* actual length of d_name */
293 struct {
294 __u8 d_type; /* file type */
295 __u8 d_namlen; /* length of string in d_name */
296 } d_44;
297 } d_u;
298 __u8 d_name[UFS_MAXNAMLEN + 1]; /* file name */
299};
300
301struct ufs_csum {
302 __fs32 cs_ndir; /* number of directories */
303 __fs32 cs_nbfree; /* number of free blocks */
304 __fs32 cs_nifree; /* number of free inodes */
305 __fs32 cs_nffree; /* number of free frags */
306};
307struct ufs2_csum_total {
308 __fs64 cs_ndir; /* number of directories */
309 __fs64 cs_nbfree; /* number of free blocks */
310 __fs64 cs_nifree; /* number of free inodes */
311 __fs64 cs_nffree; /* number of free frags */
312 __fs64 cs_numclusters; /* number of free clusters */
313 __fs64 cs_spare[3]; /* future expansion */
314};
315
Al Viro44aa5352006-08-13 01:54:30 -0400316struct ufs_csum_core {
317 __u64 cs_ndir; /* number of directories */
318 __u64 cs_nbfree; /* number of free blocks */
319 __u64 cs_nifree; /* number of free inodes */
320 __u64 cs_nffree; /* number of free frags */
321 __u64 cs_numclusters; /* number of free clusters */
322};
323
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -0700324/*
325 * File system flags
326 */
327#define UFS_UNCLEAN 0x01 /* file system not clean at mount (unused) */
328#define UFS_DOSOFTDEP 0x02 /* file system using soft dependencies */
329#define UFS_NEEDSFSCK 0x04 /* needs sync fsck (FreeBSD compat, unused) */
330#define UFS_INDEXDIRS 0x08 /* kernel supports indexed directories */
331#define UFS_ACLS 0x10 /* file system has ACLs enabled */
332#define UFS_MULTILABEL 0x20 /* file system is MAC multi-label */
333#define UFS_FLAGS_UPDATED 0x80 /* flags have been moved to new location */
334
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700335#if 0
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336/*
337 * This is the actual superblock, as it is laid out on the disk.
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700338 * Do NOT use this structure, because of sizeof(ufs_super_block) > 512 and
339 * it may occupy several blocks, use
340 * struct ufs_super_block_(first,second,third) instead.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 */
342struct ufs_super_block {
Mark Fortescue252e2112007-10-16 23:26:31 -0700343 union {
344 struct {
345 __fs32 fs_link; /* UNUSED */
346 } fs_42;
347 struct {
348 __fs32 fs_state; /* file system state flag */
349 } fs_sun;
350 } fs_u0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 __fs32 fs_rlink; /* UNUSED */
352 __fs32 fs_sblkno; /* addr of super-block in filesys */
353 __fs32 fs_cblkno; /* offset of cyl-block in filesys */
354 __fs32 fs_iblkno; /* offset of inode-blocks in filesys */
355 __fs32 fs_dblkno; /* offset of first data after cg */
356 __fs32 fs_cgoffset; /* cylinder group offset in cylinder */
357 __fs32 fs_cgmask; /* used to calc mod fs_ntrak */
358 __fs32 fs_time; /* last time written -- time_t */
359 __fs32 fs_size; /* number of blocks in fs */
360 __fs32 fs_dsize; /* number of data blocks in fs */
361 __fs32 fs_ncg; /* number of cylinder groups */
362 __fs32 fs_bsize; /* size of basic blocks in fs */
363 __fs32 fs_fsize; /* size of frag blocks in fs */
364 __fs32 fs_frag; /* number of frags in a block in fs */
365/* these are configuration parameters */
366 __fs32 fs_minfree; /* minimum percentage of free blocks */
367 __fs32 fs_rotdelay; /* num of ms for optimal next block */
368 __fs32 fs_rps; /* disk revolutions per second */
369/* these fields can be computed from the others */
370 __fs32 fs_bmask; /* ``blkoff'' calc of blk offsets */
371 __fs32 fs_fmask; /* ``fragoff'' calc of frag offsets */
372 __fs32 fs_bshift; /* ``lblkno'' calc of logical blkno */
373 __fs32 fs_fshift; /* ``numfrags'' calc number of frags */
374/* these are configuration parameters */
375 __fs32 fs_maxcontig; /* max number of contiguous blks */
376 __fs32 fs_maxbpg; /* max number of blks per cyl group */
377/* these fields can be computed from the others */
378 __fs32 fs_fragshift; /* block to frag shift */
379 __fs32 fs_fsbtodb; /* fsbtodb and dbtofsb shift constant */
380 __fs32 fs_sbsize; /* actual size of super block */
381 __fs32 fs_csmask; /* csum block offset */
382 __fs32 fs_csshift; /* csum block number */
383 __fs32 fs_nindir; /* value of NINDIR */
384 __fs32 fs_inopb; /* value of INOPB */
385 __fs32 fs_nspf; /* value of NSPF */
386/* yet another configuration parameter */
387 __fs32 fs_optim; /* optimization preference, see below */
388/* these fields are derived from the hardware */
389 union {
390 struct {
391 __fs32 fs_npsect; /* # sectors/track including spares */
392 } fs_sun;
393 struct {
394 __fs32 fs_state; /* file system state time stamp */
395 } fs_sunx86;
396 } fs_u1;
397 __fs32 fs_interleave; /* hardware sector interleave */
398 __fs32 fs_trackskew; /* sector 0 skew, per track */
399/* a unique id for this filesystem (currently unused and unmaintained) */
400/* In 4.3 Tahoe this space is used by fs_headswitch and fs_trkseek */
401/* Neither of those fields is used in the Tahoe code right now but */
402/* there could be problems if they are. */
403 __fs32 fs_id[2]; /* file system id */
404/* sizes determined by number of cylinder groups and their sizes */
405 __fs32 fs_csaddr; /* blk addr of cyl grp summary area */
406 __fs32 fs_cssize; /* size of cyl grp summary area */
407 __fs32 fs_cgsize; /* cylinder group size */
408/* these fields are derived from the hardware */
409 __fs32 fs_ntrak; /* tracks per cylinder */
410 __fs32 fs_nsect; /* sectors per track */
411 __fs32 fs_spc; /* sectors per cylinder */
412/* this comes from the disk driver partitioning */
413 __fs32 fs_ncyl; /* cylinders in file system */
414/* these fields can be computed from the others */
415 __fs32 fs_cpg; /* cylinders per group */
416 __fs32 fs_ipg; /* inodes per cylinder group */
417 __fs32 fs_fpg; /* blocks per group * fs_frag */
418/* this data must be re-computed after crashes */
419 struct ufs_csum fs_cstotal; /* cylinder summary information */
420/* these fields are cleared at mount time */
421 __s8 fs_fmod; /* super block modified flag */
422 __s8 fs_clean; /* file system is clean flag */
423 __s8 fs_ronly; /* mounted read-only flag */
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -0700424 __s8 fs_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 union {
426 struct {
427 __s8 fs_fsmnt[UFS_MAXMNTLEN];/* name mounted on */
428 __fs32 fs_cgrotor; /* last cg searched */
429 __fs32 fs_csp[UFS_MAXCSBUFS];/*list of fs_cs info buffers */
430 __fs32 fs_maxcluster;
431 __fs32 fs_cpc; /* cyl per cycle in postbl */
432 __fs16 fs_opostbl[16][8]; /* old rotation block list head */
433 } fs_u1;
434 struct {
435 __s8 fs_fsmnt[UFS2_MAXMNTLEN]; /* name mounted on */
436 __u8 fs_volname[UFS2_MAXVOLLEN]; /* volume name */
437 __fs64 fs_swuid; /* system-wide uid */
438 __fs32 fs_pad; /* due to alignment of fs_swuid */
439 __fs32 fs_cgrotor; /* last cg searched */
440 __fs32 fs_ocsp[UFS2_NOCSPTRS]; /*list of fs_cs info buffers */
441 __fs32 fs_contigdirs;/*# of contiguously allocated dirs */
442 __fs32 fs_csp; /* cg summary info buffer for fs_cs */
443 __fs32 fs_maxcluster;
444 __fs32 fs_active;/* used by snapshots to track fs */
445 __fs32 fs_old_cpc; /* cyl per cycle in postbl */
446 __fs32 fs_maxbsize;/*maximum blocking factor permitted */
447 __fs64 fs_sparecon64[17];/*old rotation block list head */
448 __fs64 fs_sblockloc; /* byte offset of standard superblock */
449 struct ufs2_csum_total fs_cstotal;/*cylinder summary information*/
450 struct ufs_timeval fs_time; /* last time written */
451 __fs64 fs_size; /* number of blocks in fs */
452 __fs64 fs_dsize; /* number of data blocks in fs */
453 __fs64 fs_csaddr; /* blk addr of cyl grp summary area */
454 __fs64 fs_pendingblocks;/* blocks in process of being freed */
455 __fs32 fs_pendinginodes;/*inodes in process of being freed */
456 } fs_u2;
457 } fs_u11;
458 union {
459 struct {
460 __fs32 fs_sparecon[53];/* reserved for future constants */
461 __fs32 fs_reclaim;
462 __fs32 fs_sparecon2[1];
463 __fs32 fs_state; /* file system state time stamp */
464 __fs32 fs_qbmask[2]; /* ~usb_bmask */
465 __fs32 fs_qfmask[2]; /* ~usb_fmask */
466 } fs_sun;
467 struct {
468 __fs32 fs_sparecon[53];/* reserved for future constants */
469 __fs32 fs_reclaim;
470 __fs32 fs_sparecon2[1];
471 __fs32 fs_npsect; /* # sectors/track including spares */
472 __fs32 fs_qbmask[2]; /* ~usb_bmask */
473 __fs32 fs_qfmask[2]; /* ~usb_fmask */
474 } fs_sunx86;
475 struct {
476 __fs32 fs_sparecon[50];/* reserved for future constants */
477 __fs32 fs_contigsumsize;/* size of cluster summary array */
478 __fs32 fs_maxsymlinklen;/* max length of an internal symlink */
479 __fs32 fs_inodefmt; /* format of on-disk inodes */
480 __fs32 fs_maxfilesize[2]; /* max representable file size */
481 __fs32 fs_qbmask[2]; /* ~usb_bmask */
482 __fs32 fs_qfmask[2]; /* ~usb_fmask */
483 __fs32 fs_state; /* file system state time stamp */
484 } fs_44;
485 } fs_u2;
486 __fs32 fs_postblformat; /* format of positional layout tables */
487 __fs32 fs_nrpos; /* number of rotational positions */
488 __fs32 fs_postbloff; /* (__s16) rotation block list head */
489 __fs32 fs_rotbloff; /* (__u8) blocks for each rotation */
490 __fs32 fs_magic; /* magic number */
491 __u8 fs_space[1]; /* list of blocks for each rotation */
492};
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700493#endif/*struct ufs_super_block*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494
495/*
496 * Preference for optimization.
497 */
498#define UFS_OPTTIME 0 /* minimize allocation time */
499#define UFS_OPTSPACE 1 /* minimize disk fragmentation */
500
501/*
502 * Rotational layout table format types
503 */
504#define UFS_42POSTBLFMT -1 /* 4.2BSD rotational table format */
505#define UFS_DYNAMICPOSTBLFMT 1 /* dynamic rotational table format */
506
507/*
508 * Convert cylinder group to base address of its global summary info.
509 */
Evgeniy Dushistove295cfc2006-02-03 03:04:04 -0800510#define fs_cs(indx) s_csp[(indx)]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511
512/*
513 * Cylinder group block for a file system.
514 *
515 * Writable fields in the cylinder group are protected by the associated
516 * super block lock fs->fs_lock.
517 */
518#define CG_MAGIC 0x090255
519#define ufs_cg_chkmagic(sb, ucg) \
520 (fs32_to_cpu((sb), (ucg)->cg_magic) == CG_MAGIC)
Mark Fortescue252e2112007-10-16 23:26:31 -0700521/*
522 * Macros for access to old cylinder group array structures
523 */
524#define ufs_ocg_blktot(sb, ucg) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_btot)
525#define ufs_ocg_blks(sb, ucg, cylno) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_b[cylno])
526#define ufs_ocg_inosused(sb, ucg) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_iused)
527#define ufs_ocg_blksfree(sb, ucg) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_free)
528#define ufs_ocg_chkmagic(sb, ucg) \
529 (fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_magic) == CG_MAGIC)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530
531/*
532 * size of this structure is 172 B
533 */
534struct ufs_cylinder_group {
535 __fs32 cg_link; /* linked list of cyl groups */
536 __fs32 cg_magic; /* magic number */
537 __fs32 cg_time; /* time last written */
538 __fs32 cg_cgx; /* we are the cgx'th cylinder group */
539 __fs16 cg_ncyl; /* number of cyl's this cg */
540 __fs16 cg_niblk; /* number of inode blocks this cg */
541 __fs32 cg_ndblk; /* number of data blocks this cg */
542 struct ufs_csum cg_cs; /* cylinder summary information */
543 __fs32 cg_rotor; /* position of last used block */
544 __fs32 cg_frotor; /* position of last used frag */
545 __fs32 cg_irotor; /* position of last used inode */
546 __fs32 cg_frsum[UFS_MAXFRAG]; /* counts of available frags */
547 __fs32 cg_btotoff; /* (__u32) block totals per cylinder */
548 __fs32 cg_boff; /* (short) free block positions */
549 __fs32 cg_iusedoff; /* (char) used inode map */
550 __fs32 cg_freeoff; /* (u_char) free block map */
551 __fs32 cg_nextfreeoff; /* (u_char) next available space */
552 union {
553 struct {
554 __fs32 cg_clustersumoff; /* (u_int32) counts of avail clusters */
555 __fs32 cg_clusteroff; /* (u_int8) free cluster map */
556 __fs32 cg_nclusterblks; /* number of clusters this cg */
557 __fs32 cg_sparecon[13]; /* reserved for future use */
558 } cg_44;
559 struct {
560 __fs32 cg_clustersumoff;/* (u_int32) counts of avail clusters */
561 __fs32 cg_clusteroff; /* (u_int8) free cluster map */
562 __fs32 cg_nclusterblks;/* number of clusters this cg */
563 __fs32 cg_niblk; /* number of inode blocks this cg */
564 __fs32 cg_initediblk; /* last initialized inode */
565 __fs32 cg_sparecon32[3];/* reserved for future use */
566 __fs64 cg_time; /* time last written */
567 __fs64 cg_sparecon[3]; /* reserved for future use */
568 } cg_u2;
569 __fs32 cg_sparecon[16]; /* reserved for future use */
570 } cg_u;
571 __u8 cg_space[1]; /* space for cylinder group maps */
572/* actually longer */
573};
574
Mark Fortescue252e2112007-10-16 23:26:31 -0700575/* Historic Cylinder group info */
576struct ufs_old_cylinder_group {
577 __fs32 cg_link; /* linked list of cyl groups */
578 __fs32 cg_rlink; /* for incore cyl groups */
579 __fs32 cg_time; /* time last written */
580 __fs32 cg_cgx; /* we are the cgx'th cylinder group */
581 __fs16 cg_ncyl; /* number of cyl's this cg */
582 __fs16 cg_niblk; /* number of inode blocks this cg */
583 __fs32 cg_ndblk; /* number of data blocks this cg */
584 struct ufs_csum cg_cs; /* cylinder summary information */
585 __fs32 cg_rotor; /* position of last used block */
586 __fs32 cg_frotor; /* position of last used frag */
587 __fs32 cg_irotor; /* position of last used inode */
588 __fs32 cg_frsum[8]; /* counts of available frags */
589 __fs32 cg_btot[32]; /* block totals per cylinder */
590 __fs16 cg_b[32][8]; /* positions of free blocks */
591 __u8 cg_iused[256]; /* used inode map */
592 __fs32 cg_magic; /* magic number */
593 __u8 cg_free[1]; /* free block map */
594/* actually longer */
595};
596
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597/*
598 * structure of an on-disk inode
599 */
600struct ufs_inode {
601 __fs16 ui_mode; /* 0x0 */
602 __fs16 ui_nlink; /* 0x2 */
603 union {
604 struct {
605 __fs16 ui_suid; /* 0x4 */
606 __fs16 ui_sgid; /* 0x6 */
607 } oldids;
608 __fs32 ui_inumber; /* 0x4 lsf: inode number */
609 __fs32 ui_author; /* 0x4 GNU HURD: author */
610 } ui_u1;
611 __fs64 ui_size; /* 0x8 */
612 struct ufs_timeval ui_atime; /* 0x10 access */
613 struct ufs_timeval ui_mtime; /* 0x18 modification */
614 struct ufs_timeval ui_ctime; /* 0x20 creation */
615 union {
616 struct {
617 __fs32 ui_db[UFS_NDADDR];/* 0x28 data blocks */
618 __fs32 ui_ib[UFS_NINDIR];/* 0x58 indirect blocks */
619 } ui_addr;
620 __u8 ui_symlink[4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */
621 } ui_u2;
622 __fs32 ui_flags; /* 0x64 immutable, append-only... */
623 __fs32 ui_blocks; /* 0x68 blocks in use */
624 __fs32 ui_gen; /* 0x6c like ext2 i_version, for NFS support */
625 union {
626 struct {
627 __fs32 ui_shadow; /* 0x70 shadow inode with security data */
628 __fs32 ui_uid; /* 0x74 long EFT version of uid */
629 __fs32 ui_gid; /* 0x78 long EFT version of gid */
630 __fs32 ui_oeftflag; /* 0x7c reserved */
631 } ui_sun;
632 struct {
633 __fs32 ui_uid; /* 0x70 File owner */
634 __fs32 ui_gid; /* 0x74 File group */
635 __fs32 ui_spare[2]; /* 0x78 reserved */
636 } ui_44;
637 struct {
638 __fs32 ui_uid; /* 0x70 */
639 __fs32 ui_gid; /* 0x74 */
640 __fs16 ui_modeh; /* 0x78 mode high bits */
641 __fs16 ui_spare; /* 0x7A unused */
642 __fs32 ui_trans; /* 0x7c filesystem translator */
643 } ui_hurd;
644 } ui_u3;
645};
646
647#define UFS_NXADDR 2 /* External addresses in inode. */
648struct ufs2_inode {
649 __fs16 ui_mode; /* 0: IFMT, permissions; see below. */
650 __fs16 ui_nlink; /* 2: File link count. */
651 __fs32 ui_uid; /* 4: File owner. */
652 __fs32 ui_gid; /* 8: File group. */
653 __fs32 ui_blksize; /* 12: Inode blocksize. */
654 __fs64 ui_size; /* 16: File byte count. */
655 __fs64 ui_blocks; /* 24: Bytes actually held. */
Evgeniy Dushistov21898502007-03-16 13:38:07 -0800656 __fs64 ui_atime; /* 32: Last access time. */
657 __fs64 ui_mtime; /* 40: Last modified time. */
658 __fs64 ui_ctime; /* 48: Last inode change time. */
659 __fs64 ui_birthtime; /* 56: Inode creation time. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 __fs32 ui_mtimensec; /* 64: Last modified time. */
661 __fs32 ui_atimensec; /* 68: Last access time. */
662 __fs32 ui_ctimensec; /* 72: Last inode change time. */
663 __fs32 ui_birthnsec; /* 76: Inode creation time. */
664 __fs32 ui_gen; /* 80: Generation number. */
665 __fs32 ui_kernflags; /* 84: Kernel flags. */
666 __fs32 ui_flags; /* 88: Status flags (chflags). */
667 __fs32 ui_extsize; /* 92: External attributes block. */
668 __fs64 ui_extb[UFS_NXADDR];/* 96: External attributes block. */
669 union {
670 struct {
671 __fs64 ui_db[UFS_NDADDR]; /* 112: Direct disk blocks. */
672 __fs64 ui_ib[UFS_NINDIR];/* 208: Indirect disk blocks.*/
673 } ui_addr;
674 __u8 ui_symlink[2*4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */
675 } ui_u2;
676 __fs64 ui_spare[3]; /* 232: Reserved; currently unused */
677};
678
679
680/* FreeBSD has these in sys/stat.h */
681/* ui_flags that can be set by a file owner */
682#define UFS_UF_SETTABLE 0x0000ffff
683#define UFS_UF_NODUMP 0x00000001 /* do not dump */
684#define UFS_UF_IMMUTABLE 0x00000002 /* immutable (can't "change") */
685#define UFS_UF_APPEND 0x00000004 /* append-only */
686#define UFS_UF_OPAQUE 0x00000008 /* directory is opaque (unionfs) */
687#define UFS_UF_NOUNLINK 0x00000010 /* can't be removed or renamed */
688/* ui_flags that only root can set */
689#define UFS_SF_SETTABLE 0xffff0000
690#define UFS_SF_ARCHIVED 0x00010000 /* archived */
691#define UFS_SF_IMMUTABLE 0x00020000 /* immutable (can't "change") */
692#define UFS_SF_APPEND 0x00040000 /* append-only */
693#define UFS_SF_NOUNLINK 0x00100000 /* can't be removed or renamed */
694
695/*
696 * This structure is used for reading disk structures larger
697 * than the size of fragment.
698 */
699struct ufs_buffer_head {
700 __u64 fragment; /* first fragment */
701 __u64 count; /* number of fragments */
702 struct buffer_head * bh[UFS_MAXFRAG]; /* buffers */
703};
704
705struct ufs_cg_private_info {
Evgeniy Dushistov9695ef12006-06-25 05:47:22 -0700706 struct ufs_buffer_head c_ubh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707 __u32 c_cgx; /* number of cylidner group */
708 __u16 c_ncyl; /* number of cyl's this cg */
709 __u16 c_niblk; /* number of inode blocks this cg */
710 __u32 c_ndblk; /* number of data blocks this cg */
711 __u32 c_rotor; /* position of last used block */
712 __u32 c_frotor; /* position of last used frag */
713 __u32 c_irotor; /* position of last used inode */
714 __u32 c_btotoff; /* (__u32) block totals per cylinder */
715 __u32 c_boff; /* (short) free block positions */
716 __u32 c_iusedoff; /* (char) used inode map */
717 __u32 c_freeoff; /* (u_char) free block map */
718 __u32 c_nextfreeoff; /* (u_char) next available space */
719 __u32 c_clustersumoff;/* (u_int32) counts of avail clusters */
720 __u32 c_clusteroff; /* (u_int8) free cluster map */
721 __u32 c_nclusterblks; /* number of clusters this cg */
Mike Frysingere5420592008-02-08 04:21:31 -0800722};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723
Evgeniy Dushistov54fb9962007-02-12 00:54:32 -0800724
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725struct ufs_sb_private_info {
726 struct ufs_buffer_head s_ubh; /* buffer containing super block */
Al Viro44aa5352006-08-13 01:54:30 -0400727 struct ufs_csum_core cs_total;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700728 __u32 s_sblkno; /* offset of super-blocks in filesys */
729 __u32 s_cblkno; /* offset of cg-block in filesys */
730 __u32 s_iblkno; /* offset of inode-blocks in filesys */
731 __u32 s_dblkno; /* offset of first data after cg */
732 __u32 s_cgoffset; /* cylinder group offset in cylinder */
733 __u32 s_cgmask; /* used to calc mod fs_ntrak */
734 __u32 s_size; /* number of blocks (fragments) in fs */
735 __u32 s_dsize; /* number of data blocks in fs */
736 __u64 s_u2_size; /* ufs2: number of blocks (fragments) in fs */
737 __u64 s_u2_dsize; /*ufs2: number of data blocks in fs */
738 __u32 s_ncg; /* number of cylinder groups */
739 __u32 s_bsize; /* size of basic blocks */
740 __u32 s_fsize; /* size of fragments */
741 __u32 s_fpb; /* fragments per block */
742 __u32 s_minfree; /* minimum percentage of free blocks */
743 __u32 s_bmask; /* `blkoff'' calc of blk offsets */
744 __u32 s_fmask; /* s_fsize mask */
745 __u32 s_bshift; /* `lblkno'' calc of logical blkno */
746 __u32 s_fshift; /* s_fsize shift */
747 __u32 s_fpbshift; /* fragments per block shift */
748 __u32 s_fsbtodb; /* fsbtodb and dbtofsb shift constant */
749 __u32 s_sbsize; /* actual size of super block */
750 __u32 s_csmask; /* csum block offset */
751 __u32 s_csshift; /* csum block number */
752 __u32 s_nindir; /* value of NINDIR */
753 __u32 s_inopb; /* value of INOPB */
754 __u32 s_nspf; /* value of NSPF */
755 __u32 s_npsect; /* # sectors/track including spares */
756 __u32 s_interleave; /* hardware sector interleave */
757 __u32 s_trackskew; /* sector 0 skew, per track */
Evgeniy Dushistov3313e292007-02-12 00:54:31 -0800758 __u64 s_csaddr; /* blk addr of cyl grp summary area */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700759 __u32 s_cssize; /* size of cyl grp summary area */
760 __u32 s_cgsize; /* cylinder group size */
761 __u32 s_ntrak; /* tracks per cylinder */
762 __u32 s_nsect; /* sectors per track */
763 __u32 s_spc; /* sectors per cylinder */
764 __u32 s_ipg; /* inodes per cylinder group */
765 __u32 s_fpg; /* fragments per group */
766 __u32 s_cpc; /* cyl per cycle in postbl */
767 __s32 s_contigsumsize;/* size of cluster summary array, 44bsd */
768 __s64 s_qbmask; /* ~usb_bmask */
769 __s64 s_qfmask; /* ~usb_fmask */
770 __s32 s_postblformat; /* format of positional layout tables */
771 __s32 s_nrpos; /* number of rotational positions */
772 __s32 s_postbloff; /* (__s16) rotation block list head */
773 __s32 s_rotbloff; /* (__u8) blocks for each rotation */
774
775 __u32 s_fpbmask; /* fragments per block mask */
776 __u32 s_apb; /* address per block */
777 __u32 s_2apb; /* address per block^2 */
778 __u32 s_3apb; /* address per block^3 */
779 __u32 s_apbmask; /* address per block mask */
780 __u32 s_apbshift; /* address per block shift */
781 __u32 s_2apbshift; /* address per block shift * 2 */
782 __u32 s_3apbshift; /* address per block shift * 3 */
783 __u32 s_nspfshift; /* number of sector per fragment shift */
784 __u32 s_nspb; /* number of sector per block */
785 __u32 s_inopf; /* inodes per fragment */
786 __u32 s_sbbase; /* offset of NeXTstep superblock */
787 __u32 s_bpf; /* bits per fragment */
788 __u32 s_bpfshift; /* bits per fragment shift*/
789 __u32 s_bpfmask; /* bits per fragment mask */
790
791 __u32 s_maxsymlinklen;/* upper limit on fast symlinks' size */
792 __s32 fs_magic; /* filesystem magic */
Evgeniy Dushistovf3369532007-02-08 14:20:25 -0800793 unsigned int s_dirblksize;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794};
795
796/*
797 * Sizes of this structures are:
798 * ufs_super_block_first 512
799 * ufs_super_block_second 512
800 * ufs_super_block_third 356
801 */
802struct ufs_super_block_first {
Mark Fortescue252e2112007-10-16 23:26:31 -0700803 union {
804 struct {
805 __fs32 fs_link; /* UNUSED */
806 } fs_42;
807 struct {
808 __fs32 fs_state; /* file system state flag */
809 } fs_sun;
810 } fs_u0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811 __fs32 fs_rlink;
812 __fs32 fs_sblkno;
813 __fs32 fs_cblkno;
814 __fs32 fs_iblkno;
815 __fs32 fs_dblkno;
816 __fs32 fs_cgoffset;
817 __fs32 fs_cgmask;
818 __fs32 fs_time;
819 __fs32 fs_size;
820 __fs32 fs_dsize;
821 __fs32 fs_ncg;
822 __fs32 fs_bsize;
823 __fs32 fs_fsize;
824 __fs32 fs_frag;
825 __fs32 fs_minfree;
826 __fs32 fs_rotdelay;
827 __fs32 fs_rps;
828 __fs32 fs_bmask;
829 __fs32 fs_fmask;
830 __fs32 fs_bshift;
831 __fs32 fs_fshift;
832 __fs32 fs_maxcontig;
833 __fs32 fs_maxbpg;
834 __fs32 fs_fragshift;
835 __fs32 fs_fsbtodb;
836 __fs32 fs_sbsize;
837 __fs32 fs_csmask;
838 __fs32 fs_csshift;
839 __fs32 fs_nindir;
840 __fs32 fs_inopb;
841 __fs32 fs_nspf;
842 __fs32 fs_optim;
843 union {
844 struct {
845 __fs32 fs_npsect;
846 } fs_sun;
847 struct {
848 __fs32 fs_state;
849 } fs_sunx86;
850 } fs_u1;
851 __fs32 fs_interleave;
852 __fs32 fs_trackskew;
853 __fs32 fs_id[2];
854 __fs32 fs_csaddr;
855 __fs32 fs_cssize;
856 __fs32 fs_cgsize;
857 __fs32 fs_ntrak;
858 __fs32 fs_nsect;
859 __fs32 fs_spc;
860 __fs32 fs_ncyl;
861 __fs32 fs_cpg;
862 __fs32 fs_ipg;
863 __fs32 fs_fpg;
864 struct ufs_csum fs_cstotal;
865 __s8 fs_fmod;
866 __s8 fs_clean;
867 __s8 fs_ronly;
868 __s8 fs_flags;
869 __s8 fs_fsmnt[UFS_MAXMNTLEN - 212];
870
871};
872
873struct ufs_super_block_second {
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700874 union {
875 struct {
876 __s8 fs_fsmnt[212];
877 __fs32 fs_cgrotor;
878 __fs32 fs_csp[UFS_MAXCSBUFS];
879 __fs32 fs_maxcluster;
880 __fs32 fs_cpc;
881 __fs16 fs_opostbl[82];
882 } fs_u1;
883 struct {
884 __s8 fs_fsmnt[UFS2_MAXMNTLEN - UFS_MAXMNTLEN + 212];
885 __u8 fs_volname[UFS2_MAXVOLLEN];
886 __fs64 fs_swuid;
887 __fs32 fs_pad;
888 __fs32 fs_cgrotor;
889 __fs32 fs_ocsp[UFS2_NOCSPTRS];
890 __fs32 fs_contigdirs;
891 __fs32 fs_csp;
892 __fs32 fs_maxcluster;
893 __fs32 fs_active;
894 __fs32 fs_old_cpc;
895 __fs32 fs_maxbsize;
896 __fs64 fs_sparecon64[17];
897 __fs64 fs_sblockloc;
898 __fs64 cs_ndir;
899 __fs64 cs_nbfree;
900 } fs_u2;
901 } fs_un;
902};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903
904struct ufs_super_block_third {
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700905 union {
906 struct {
907 __fs16 fs_opostbl[46];
908 } fs_u1;
909 struct {
910 __fs64 cs_nifree; /* number of free inodes */
911 __fs64 cs_nffree; /* number of free frags */
912 __fs64 cs_numclusters; /* number of free clusters */
913 __fs64 cs_spare[3]; /* future expansion */
914 struct ufs_timeval fs_time; /* last time written */
915 __fs64 fs_size; /* number of blocks in fs */
916 __fs64 fs_dsize; /* number of data blocks in fs */
917 __fs64 fs_csaddr; /* blk addr of cyl grp summary area */
918 __fs64 fs_pendingblocks;/* blocks in process of being freed */
919 __fs32 fs_pendinginodes;/*inodes in process of being freed */
Eric Sandeen86f4f0f2006-11-02 22:07:05 -0800920 } __attribute__ ((packed)) fs_u2;
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700921 } fs_un1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922 union {
923 struct {
924 __fs32 fs_sparecon[53];/* reserved for future constants */
925 __fs32 fs_reclaim;
926 __fs32 fs_sparecon2[1];
927 __fs32 fs_state; /* file system state time stamp */
928 __fs32 fs_qbmask[2]; /* ~usb_bmask */
929 __fs32 fs_qfmask[2]; /* ~usb_fmask */
930 } fs_sun;
931 struct {
932 __fs32 fs_sparecon[53];/* reserved for future constants */
933 __fs32 fs_reclaim;
934 __fs32 fs_sparecon2[1];
935 __fs32 fs_npsect; /* # sectors/track including spares */
936 __fs32 fs_qbmask[2]; /* ~usb_bmask */
937 __fs32 fs_qfmask[2]; /* ~usb_fmask */
938 } fs_sunx86;
939 struct {
940 __fs32 fs_sparecon[50];/* reserved for future constants */
941 __fs32 fs_contigsumsize;/* size of cluster summary array */
942 __fs32 fs_maxsymlinklen;/* max length of an internal symlink */
943 __fs32 fs_inodefmt; /* format of on-disk inodes */
944 __fs32 fs_maxfilesize[2]; /* max representable file size */
945 __fs32 fs_qbmask[2]; /* ~usb_bmask */
946 __fs32 fs_qfmask[2]; /* ~usb_fmask */
947 __fs32 fs_state; /* file system state time stamp */
948 } fs_44;
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700949 } fs_un2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700950 __fs32 fs_postblformat;
951 __fs32 fs_nrpos;
952 __fs32 fs_postbloff;
953 __fs32 fs_rotbloff;
954 __fs32 fs_magic;
955 __u8 fs_space[1];
956};
957
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958#endif /* __LINUX_UFS_FS_H */