1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * linux/include/linux/ufs_fs.h |
4 | * |
5 | * Copyright (C) 1996 |
6 | * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu) |
7 | * Laboratory for Computer Science Research Computing Facility |
8 | * Rutgers, The State University of New Jersey |
9 | * |
10 | * Clean swab support by Fare <fare@tunes.org> |
11 | * just hope no one is using NNUUXXI on __?64 structure elements |
12 | * 64-bit clean thanks to Maciej W. Rozycki <macro@ds2.pg.gda.pl> |
13 | * |
14 | * 4.4BSD (FreeBSD) support added on February 1st 1998 by |
15 | * Niels Kristian Bech Jensen <nkbj@image.dk> partially based |
16 | * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>. |
17 | * |
18 | * NeXTstep support added on February 5th 1998 by |
19 | * Niels Kristian Bech Jensen <nkbj@image.dk>. |
20 | * |
21 | * Write support by Daniel Pirkl <daniel.pirkl@email.cz> |
22 | * |
23 | * HP/UX hfs filesystem support added by |
24 | * Martin K. Petersen <mkp@mkp.net>, August 1999 |
25 | * |
26 | * UFS2 (of FreeBSD 5.x) support added by |
27 | * Niraj Kumar <niraj17@iitbombay.org> , Jan 2004 |
28 | * |
29 | */ |
30 | |
31 | #ifndef __LINUX_UFS_FS_H |
32 | #define __LINUX_UFS_FS_H |
33 | |
34 | #include <linux/types.h> |
35 | #include <linux/kernel.h> |
36 | #include <linux/stat.h> |
37 | #include <linux/fs.h> |
38 | #include <linux/workqueue.h> |
39 | |
40 | #include <asm/div64.h> |
41 | typedef __u64 __bitwise __fs64; |
42 | typedef __u32 __bitwise __fs32; |
43 | typedef __u16 __bitwise __fs16; |
44 | |
45 | #define UFS_BBLOCK 0 |
46 | #define UFS_BBSIZE 8192 |
47 | #define UFS_SBLOCK 8192 |
48 | #define UFS_SBSIZE 8192 |
49 | |
50 | #define UFS_SECTOR_SIZE 512 |
51 | #define UFS_SECTOR_BITS 9 |
52 | #define UFS_MAGIC 0x00011954 |
53 | #define UFS_MAGIC_BW 0x0f242697 |
54 | #define UFS2_MAGIC 0x19540119 |
55 | #define UFS_CIGAM 0x54190100 /* byteswapped MAGIC */ |
56 | |
57 | /* Copied from FreeBSD */ |
58 | /* |
59 | * Each disk drive contains some number of filesystems. |
60 | * A filesystem consists of a number of cylinder groups. |
61 | * Each cylinder group has inodes and data. |
62 | * |
63 | * A filesystem is described by its super-block, which in turn |
64 | * describes the cylinder groups. The super-block is critical |
65 | * data and is replicated in each cylinder group to protect against |
66 | * catastrophic loss. This is done at `newfs' time and the critical |
67 | * super-block data does not change, so the copies need not be |
68 | * referenced further unless disaster strikes. |
69 | * |
70 | * For filesystem fs, the offsets of the various blocks of interest |
71 | * are given in the super block as: |
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 |
76 | * The beginning of cylinder group cg in fs, is given by |
77 | * the ``cgbase(fs, cg)'' macro. |
78 | * |
79 | * Depending on the architecture and the media, the superblock may |
80 | * reside in any one of four places. For tiny media where every block |
81 | * counts, it is placed at the very front of the partition. Historically, |
82 | * UFS1 placed it 8K from the front to leave room for the disk label and |
83 | * a small bootstrap. For UFS2 it got moved to 64K from the front to leave |
84 | * room for the disk label and a bigger bootstrap, and for really piggy |
85 | * systems we check at 256K from the front if the first three fail. In |
86 | * all cases the size of the superblock will be SBLOCKSIZE. All values are |
87 | * given in byte-offset form, so they do not imply a sector size. The |
88 | * SBLOCKSEARCH specifies the order in which the locations should be searched. |
89 | */ |
90 | #define SBLOCK_FLOPPY 0 |
91 | #define SBLOCK_UFS1 8192 |
92 | #define SBLOCK_UFS2 65536 |
93 | #define SBLOCK_PIGGY 262144 |
94 | #define SBLOCKSIZE 8192 |
95 | #define SBLOCKSEARCH \ |
96 | { SBLOCK_UFS2, SBLOCK_UFS1, SBLOCK_FLOPPY, SBLOCK_PIGGY, -1 } |
97 | |
98 | |
99 | /* HP specific MAGIC values */ |
100 | |
101 | #define UFS_MAGIC_LFN 0x00095014 /* fs supports filenames > 14 chars */ |
102 | #define UFS_CIGAM_LFN 0x14500900 /* srahc 41 < semanelif stroppus sf */ |
103 | |
104 | #define UFS_MAGIC_SEC 0x00612195 /* B1 security fs */ |
105 | #define UFS_CIGAM_SEC 0x95216100 |
106 | |
107 | #define UFS_MAGIC_FEA 0x00195612 /* fs_featurebits supported */ |
108 | #define UFS_CIGAM_FEA 0x12561900 |
109 | |
110 | #define UFS_MAGIC_4GB 0x05231994 /* fs > 4 GB && fs_featurebits */ |
111 | #define UFS_CIGAM_4GB 0x94192305 |
112 | |
113 | /* Seems somebody at HP goofed here. B1 and lfs are both 0x2 !?! */ |
114 | #define UFS_FSF_LFN 0x00000001 /* long file names */ |
115 | #define UFS_FSF_B1 0x00000002 /* B1 security */ |
116 | #define UFS_FSF_LFS 0x00000002 /* large files */ |
117 | #define UFS_FSF_LUID 0x00000004 /* large UIDs */ |
118 | |
119 | /* End of HP stuff */ |
120 | |
121 | |
122 | #define UFS_BSIZE 8192 |
123 | #define UFS_MINBSIZE 4096 |
124 | #define UFS_FSIZE 1024 |
125 | #define UFS_MAXFRAG (UFS_BSIZE / UFS_FSIZE) |
126 | |
127 | #define UFS_NDADDR 12 |
128 | #define UFS_NINDIR 3 |
129 | |
130 | #define UFS_IND_BLOCK (UFS_NDADDR + 0) |
131 | #define UFS_DIND_BLOCK (UFS_NDADDR + 1) |
132 | #define UFS_TIND_BLOCK (UFS_NDADDR + 2) |
133 | |
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) |
138 | |
139 | #define UFS_ROOTINO 2 |
140 | #define UFS_FIRST_INO (UFS_ROOTINO + 1) |
141 | |
142 | #define UFS_USEEFT ((__u16)65535) |
143 | |
144 | /* fs_clean values */ |
145 | #define UFS_FSOK 0x7c269d38 |
146 | #define UFS_FSACTIVE ((__s8)0x00) |
147 | #define UFS_FSCLEAN ((__s8)0x01) |
148 | #define UFS_FSSTABLE ((__s8)0x02) |
149 | #define UFS_FSOSF1 ((__s8)0x03) /* is this correct for DEC OSF/1? */ |
150 | #define UFS_FSBAD ((__s8)0xff) |
151 | |
152 | /* Solaris-specific fs_clean values */ |
153 | #define UFS_FSSUSPEND ((__s8)0xfe) /* temporarily suspended */ |
154 | #define UFS_FSLOG ((__s8)0xfd) /* logging fs */ |
155 | #define UFS_FSFIX ((__s8)0xfc) /* being repaired while mounted */ |
156 | |
157 | /* From here to next blank line, s_flags for ufs_sb_info */ |
158 | /* directory entry encoding */ |
159 | #define UFS_DE_MASK 0x00000010 /* mask for the following */ |
160 | #define UFS_DE_OLD 0x00000000 |
161 | #define UFS_DE_44BSD 0x00000010 |
162 | /* uid encoding */ |
163 | #define UFS_UID_MASK 0x00000060 /* mask for the following */ |
164 | #define UFS_UID_OLD 0x00000000 |
165 | #define UFS_UID_44BSD 0x00000020 |
166 | #define UFS_UID_EFT 0x00000040 |
167 | /* superblock state encoding */ |
168 | #define UFS_ST_MASK 0x00000700 /* mask for the following */ |
169 | #define UFS_ST_OLD 0x00000000 |
170 | #define UFS_ST_44BSD 0x00000100 |
171 | #define UFS_ST_SUN 0x00000200 /* Solaris */ |
172 | #define UFS_ST_SUNOS 0x00000300 |
173 | #define UFS_ST_SUNx86 0x00000400 /* Solaris x86 */ |
174 | /*cylinder group encoding */ |
175 | #define UFS_CG_MASK 0x00003000 /* mask for the following */ |
176 | #define UFS_CG_OLD 0x00000000 |
177 | #define UFS_CG_44BSD 0x00002000 |
178 | #define UFS_CG_SUN 0x00001000 |
179 | /* filesystem type encoding */ |
180 | #define UFS_TYPE_MASK 0x00010000 /* mask for the following */ |
181 | #define UFS_TYPE_UFS1 0x00000000 |
182 | #define UFS_TYPE_UFS2 0x00010000 |
183 | |
184 | |
185 | /* fs_inodefmt options */ |
186 | #define UFS_42INODEFMT -1 |
187 | #define UFS_44INODEFMT 2 |
188 | |
189 | /* |
190 | * MINFREE gives the minimum acceptable percentage of file system |
191 | * blocks which may be free. If the freelist drops below this level |
192 | * only the superuser may continue to allocate blocks. This may |
193 | * be set to 0 if no reserve of free blocks is deemed necessary, |
194 | * however throughput drops by fifty percent if the file system |
195 | * is run at between 95% and 100% full; thus the minimum default |
196 | * value of fs_minfree is 5%. However, to get good clustering |
197 | * performance, 10% is a better choice. hence we use 10% as our |
198 | * default value. With 10% free space, fragmentation is not a |
199 | * problem, so we choose to optimize for time. |
200 | */ |
201 | #define UFS_MINFREE 5 |
202 | #define UFS_DEFAULTOPT UFS_OPTTIME |
203 | |
204 | /* |
205 | * Turn file system block numbers into disk block addresses. |
206 | * This maps file system blocks to device size blocks. |
207 | */ |
208 | #define ufs_fsbtodb(uspi, b) ((b) << (uspi)->s_fsbtodb) |
209 | #define ufs_dbtofsb(uspi, b) ((b) >> (uspi)->s_fsbtodb) |
210 | |
211 | /* |
212 | * Cylinder group macros to locate things in cylinder groups. |
213 | * They calc file system addresses of cylinder group data structures. |
214 | */ |
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 */ |
222 | |
223 | /* |
224 | * Macros for handling inode numbers: |
225 | * inode number to file system block offset. |
226 | * inode number to cylinder group number. |
227 | * inode number to file system block address. |
228 | */ |
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) |
233 | |
234 | /* |
235 | * Compute the cylinder and rotational position of a cyl block addr. |
236 | */ |
237 | #define ufs_cbtocylno(bno) \ |
238 | ((bno) * uspi->s_nspf / uspi->s_spc) |
239 | #define ufs_cbtorpos(bno) \ |
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) \ |
244 | : \ |
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)) |
249 | |
250 | /* |
251 | * The following macros optimize certain frequently calculated |
252 | * quantities by using shifts and masks in place of divisions |
253 | * modulos and multiplications. |
254 | */ |
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) |
266 | |
267 | #define UFS_MAXNAMLEN 255 |
268 | #define UFS_MAXMNTLEN 512 |
269 | #define UFS2_MAXMNTLEN 468 |
270 | #define UFS2_MAXVOLLEN 32 |
271 | #define UFS_MAXCSBUFS 31 |
272 | #define UFS_LINK_MAX 32000 |
273 | /* |
274 | #define UFS2_NOCSPTRS ((128 / sizeof(void *)) - 4) |
275 | */ |
276 | #define UFS2_NOCSPTRS 28 |
277 | |
278 | /* |
279 | * UFS_DIR_PAD defines the directory entries boundaries |
280 | * (must be a multiple of 4) |
281 | */ |
282 | #define UFS_DIR_PAD 4 |
283 | #define UFS_DIR_ROUND (UFS_DIR_PAD - 1) |
284 | #define UFS_DIR_REC_LEN(name_len) (((name_len) + 1 + 8 + UFS_DIR_ROUND) & ~UFS_DIR_ROUND) |
285 | |
286 | struct ufs_timeval { |
287 | __fs32 tv_sec; |
288 | __fs32 tv_usec; |
289 | }; |
290 | |
291 | struct ufs_dir_entry { |
292 | __fs32 d_ino; /* inode number of this entry */ |
293 | __fs16 d_reclen; /* length of this entry */ |
294 | union { |
295 | __fs16 d_namlen; /* actual length of d_name */ |
296 | struct { |
297 | __u8 d_type; /* file type */ |
298 | __u8 d_namlen; /* length of string in d_name */ |
299 | } d_44; |
300 | } d_u; |
301 | __u8 d_name[UFS_MAXNAMLEN + 1]; /* file name */ |
302 | }; |
303 | |
304 | struct ufs_csum { |
305 | __fs32 cs_ndir; /* number of directories */ |
306 | __fs32 cs_nbfree; /* number of free blocks */ |
307 | __fs32 cs_nifree; /* number of free inodes */ |
308 | __fs32 cs_nffree; /* number of free frags */ |
309 | }; |
310 | struct ufs2_csum_total { |
311 | __fs64 cs_ndir; /* number of directories */ |
312 | __fs64 cs_nbfree; /* number of free blocks */ |
313 | __fs64 cs_nifree; /* number of free inodes */ |
314 | __fs64 cs_nffree; /* number of free frags */ |
315 | __fs64 cs_numclusters; /* number of free clusters */ |
316 | __fs64 cs_spare[3]; /* future expansion */ |
317 | }; |
318 | |
319 | struct ufs_csum_core { |
320 | __u64 cs_ndir; /* number of directories */ |
321 | __u64 cs_nbfree; /* number of free blocks */ |
322 | __u64 cs_nifree; /* number of free inodes */ |
323 | __u64 cs_nffree; /* number of free frags */ |
324 | __u64 cs_numclusters; /* number of free clusters */ |
325 | }; |
326 | |
327 | /* |
328 | * File system flags |
329 | */ |
330 | #define UFS_UNCLEAN 0x01 /* file system not clean at mount (unused) */ |
331 | #define UFS_DOSOFTDEP 0x02 /* file system using soft dependencies */ |
332 | #define UFS_NEEDSFSCK 0x04 /* needs sync fsck (FreeBSD compat, unused) */ |
333 | #define UFS_INDEXDIRS 0x08 /* kernel supports indexed directories */ |
334 | #define UFS_ACLS 0x10 /* file system has ACLs enabled */ |
335 | #define UFS_MULTILABEL 0x20 /* file system is MAC multi-label */ |
336 | #define UFS_FLAGS_UPDATED 0x80 /* flags have been moved to new location */ |
337 | |
338 | #if 0 |
339 | /* |
340 | * This is the actual superblock, as it is laid out on the disk. |
341 | * Do NOT use this structure, because of sizeof(ufs_super_block) > 512 and |
342 | * it may occupy several blocks, use |
343 | * struct ufs_super_block_(first,second,third) instead. |
344 | */ |
345 | struct ufs_super_block { |
346 | union { |
347 | struct { |
348 | __fs32 fs_link; /* UNUSED */ |
349 | } fs_42; |
350 | struct { |
351 | __fs32 fs_state; /* file system state flag */ |
352 | } fs_sun; |
353 | } fs_u0; |
354 | __fs32 fs_rlink; /* UNUSED */ |
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 */ |
358 | __fs32 fs_dblkno; /* offset of first data after cg */ |
359 | __fs32 fs_cgoffset; /* cylinder group offset in cylinder */ |
360 | __fs32 fs_cgmask; /* used to calc mod fs_ntrak */ |
361 | __fs32 fs_time; /* last time written -- time_t */ |
362 | __fs32 fs_size; /* number of blocks in fs */ |
363 | __fs32 fs_dsize; /* number of data blocks in fs */ |
364 | __fs32 fs_ncg; /* number of cylinder groups */ |
365 | __fs32 fs_bsize; /* size of basic blocks in fs */ |
366 | __fs32 fs_fsize; /* size of frag blocks in fs */ |
367 | __fs32 fs_frag; /* number of frags in a block in fs */ |
368 | /* these are configuration parameters */ |
369 | __fs32 fs_minfree; /* minimum percentage of free blocks */ |
370 | __fs32 fs_rotdelay; /* num of ms for optimal next block */ |
371 | __fs32 fs_rps; /* disk revolutions per second */ |
372 | /* these fields can be computed from the others */ |
373 | __fs32 fs_bmask; /* ``blkoff'' calc of blk offsets */ |
374 | __fs32 fs_fmask; /* ``fragoff'' calc of frag offsets */ |
375 | __fs32 fs_bshift; /* ``lblkno'' calc of logical blkno */ |
376 | __fs32 fs_fshift; /* ``numfrags'' calc number of frags */ |
377 | /* these are configuration parameters */ |
378 | __fs32 fs_maxcontig; /* max number of contiguous blks */ |
379 | __fs32 fs_maxbpg; /* max number of blks per cyl group */ |
380 | /* these fields can be computed from the others */ |
381 | __fs32 fs_fragshift; /* block to frag shift */ |
382 | __fs32 fs_fsbtodb; /* fsbtodb and dbtofsb shift constant */ |
383 | __fs32 fs_sbsize; /* actual size of super block */ |
384 | __fs32 fs_csmask; /* csum block offset */ |
385 | __fs32 fs_csshift; /* csum block number */ |
386 | __fs32 fs_nindir; /* value of NINDIR */ |
387 | __fs32 fs_inopb; /* value of INOPB */ |
388 | __fs32 fs_nspf; /* value of NSPF */ |
389 | /* yet another configuration parameter */ |
390 | __fs32 fs_optim; /* optimization preference, see below */ |
391 | /* these fields are derived from the hardware */ |
392 | union { |
393 | struct { |
394 | __fs32 fs_npsect; /* # sectors/track including spares */ |
395 | } fs_sun; |
396 | struct { |
397 | __fs32 fs_state; /* file system state time stamp */ |
398 | } fs_sunx86; |
399 | } fs_u1; |
400 | __fs32 fs_interleave; /* hardware sector interleave */ |
401 | __fs32 fs_trackskew; /* sector 0 skew, per track */ |
402 | /* a unique id for this filesystem (currently unused and unmaintained) */ |
403 | /* In 4.3 Tahoe this space is used by fs_headswitch and fs_trkseek */ |
404 | /* Neither of those fields is used in the Tahoe code right now but */ |
405 | /* there could be problems if they are. */ |
406 | __fs32 fs_id[2]; /* file system id */ |
407 | /* sizes determined by number of cylinder groups and their sizes */ |
408 | __fs32 fs_csaddr; /* blk addr of cyl grp summary area */ |
409 | __fs32 fs_cssize; /* size of cyl grp summary area */ |
410 | __fs32 fs_cgsize; /* cylinder group size */ |
411 | /* these fields are derived from the hardware */ |
412 | __fs32 fs_ntrak; /* tracks per cylinder */ |
413 | __fs32 fs_nsect; /* sectors per track */ |
414 | __fs32 fs_spc; /* sectors per cylinder */ |
415 | /* this comes from the disk driver partitioning */ |
416 | __fs32 fs_ncyl; /* cylinders in file system */ |
417 | /* these fields can be computed from the others */ |
418 | __fs32 fs_cpg; /* cylinders per group */ |
419 | __fs32 fs_ipg; /* inodes per cylinder group */ |
420 | __fs32 fs_fpg; /* blocks per group * fs_frag */ |
421 | /* this data must be re-computed after crashes */ |
422 | struct ufs_csum fs_cstotal; /* cylinder summary information */ |
423 | /* these fields are cleared at mount time */ |
424 | __s8 fs_fmod; /* super block modified flag */ |
425 | __s8 fs_clean; /* file system is clean flag */ |
426 | __s8 fs_ronly; /* mounted read-only flag */ |
427 | __s8 fs_flags; |
428 | union { |
429 | struct { |
430 | __s8 fs_fsmnt[UFS_MAXMNTLEN];/* name mounted on */ |
431 | __fs32 fs_cgrotor; /* last cg searched */ |
432 | __fs32 fs_csp[UFS_MAXCSBUFS];/*list of fs_cs info buffers */ |
433 | __fs32 fs_maxcluster; |
434 | __fs32 fs_cpc; /* cyl per cycle in postbl */ |
435 | __fs16 fs_opostbl[16][8]; /* old rotation block list head */ |
436 | } fs_u1; |
437 | struct { |
438 | __s8 fs_fsmnt[UFS2_MAXMNTLEN]; /* name mounted on */ |
439 | __u8 fs_volname[UFS2_MAXVOLLEN]; /* volume name */ |
440 | __fs64 fs_swuid; /* system-wide uid */ |
441 | __fs32 fs_pad; /* due to alignment of fs_swuid */ |
442 | __fs32 fs_cgrotor; /* last cg searched */ |
443 | __fs32 fs_ocsp[UFS2_NOCSPTRS]; /*list of fs_cs info buffers */ |
444 | __fs32 fs_contigdirs;/*# of contiguously allocated dirs */ |
445 | __fs32 fs_csp; /* cg summary info buffer for fs_cs */ |
446 | __fs32 fs_maxcluster; |
447 | __fs32 fs_active;/* used by snapshots to track fs */ |
448 | __fs32 fs_old_cpc; /* cyl per cycle in postbl */ |
449 | __fs32 fs_maxbsize;/*maximum blocking factor permitted */ |
450 | __fs64 fs_sparecon64[17];/*old rotation block list head */ |
451 | __fs64 fs_sblockloc; /* byte offset of standard superblock */ |
452 | struct ufs2_csum_total fs_cstotal;/*cylinder summary information*/ |
453 | struct ufs_timeval fs_time; /* last time written */ |
454 | __fs64 fs_size; /* number of blocks in fs */ |
455 | __fs64 fs_dsize; /* number of data blocks in fs */ |
456 | __fs64 fs_csaddr; /* blk addr of cyl grp summary area */ |
457 | __fs64 fs_pendingblocks;/* blocks in process of being freed */ |
458 | __fs32 fs_pendinginodes;/*inodes in process of being freed */ |
459 | } fs_u2; |
460 | } fs_u11; |
461 | union { |
462 | struct { |
463 | __fs32 fs_sparecon[53];/* reserved for future constants */ |
464 | __fs32 fs_reclaim; |
465 | __fs32 fs_sparecon2[1]; |
466 | __fs32 fs_state; /* file system state time stamp */ |
467 | __fs32 fs_qbmask[2]; /* ~usb_bmask */ |
468 | __fs32 fs_qfmask[2]; /* ~usb_fmask */ |
469 | } fs_sun; |
470 | struct { |
471 | __fs32 fs_sparecon[53];/* reserved for future constants */ |
472 | __fs32 fs_reclaim; |
473 | __fs32 fs_sparecon2[1]; |
474 | __fs32 fs_npsect; /* # sectors/track including spares */ |
475 | __fs32 fs_qbmask[2]; /* ~usb_bmask */ |
476 | __fs32 fs_qfmask[2]; /* ~usb_fmask */ |
477 | } fs_sunx86; |
478 | struct { |
479 | __fs32 fs_sparecon[50];/* reserved for future constants */ |
480 | __fs32 fs_contigsumsize;/* size of cluster summary array */ |
481 | __fs32 fs_maxsymlinklen;/* max length of an internal symlink */ |
482 | __fs32 fs_inodefmt; /* format of on-disk inodes */ |
483 | __fs32 fs_maxfilesize[2]; /* max representable file size */ |
484 | __fs32 fs_qbmask[2]; /* ~usb_bmask */ |
485 | __fs32 fs_qfmask[2]; /* ~usb_fmask */ |
486 | __fs32 fs_state; /* file system state time stamp */ |
487 | } fs_44; |
488 | } fs_u2; |
489 | __fs32 fs_postblformat; /* format of positional layout tables */ |
490 | __fs32 fs_nrpos; /* number of rotational positions */ |
491 | __fs32 fs_postbloff; /* (__s16) rotation block list head */ |
492 | __fs32 fs_rotbloff; /* (__u8) blocks for each rotation */ |
493 | __fs32 fs_magic; /* magic number */ |
494 | __u8 fs_space[1]; /* list of blocks for each rotation */ |
495 | }; |
496 | #endif/*struct ufs_super_block*/ |
497 | |
498 | /* |
499 | * Preference for optimization. |
500 | */ |
501 | #define UFS_OPTTIME 0 /* minimize allocation time */ |
502 | #define UFS_OPTSPACE 1 /* minimize disk fragmentation */ |
503 | |
504 | /* |
505 | * Rotational layout table format types |
506 | */ |
507 | #define UFS_42POSTBLFMT -1 /* 4.2BSD rotational table format */ |
508 | #define UFS_DYNAMICPOSTBLFMT 1 /* dynamic rotational table format */ |
509 | |
510 | /* |
511 | * Convert cylinder group to base address of its global summary info. |
512 | */ |
513 | #define fs_cs(indx) s_csp[(indx)] |
514 | |
515 | /* |
516 | * Cylinder group block for a file system. |
517 | * |
518 | * Writable fields in the cylinder group are protected by the associated |
519 | * super block lock fs->fs_lock. |
520 | */ |
521 | #define CG_MAGIC 0x090255 |
522 | #define ufs_cg_chkmagic(sb, ucg) \ |
523 | (fs32_to_cpu((sb), (ucg)->cg_magic) == CG_MAGIC) |
524 | /* |
525 | * Macros for access to old cylinder group array structures |
526 | */ |
527 | #define ufs_ocg_blktot(sb, ucg) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_btot) |
528 | #define ufs_ocg_blks(sb, ucg, cylno) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_b[cylno]) |
529 | #define ufs_ocg_inosused(sb, ucg) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_iused) |
530 | #define ufs_ocg_blksfree(sb, ucg) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_free) |
531 | #define ufs_ocg_chkmagic(sb, ucg) \ |
532 | (fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_magic) == CG_MAGIC) |
533 | |
534 | /* |
535 | * size of this structure is 172 B |
536 | */ |
537 | struct ufs_cylinder_group { |
538 | __fs32 cg_link; /* linked list of cyl groups */ |
539 | __fs32 cg_magic; /* magic number */ |
540 | __fs32 cg_time; /* time last written */ |
541 | __fs32 cg_cgx; /* we are the cgx'th cylinder group */ |
542 | __fs16 cg_ncyl; /* number of cyl's this cg */ |
543 | __fs16 cg_niblk; /* number of inode blocks this cg */ |
544 | __fs32 cg_ndblk; /* number of data blocks this cg */ |
545 | struct ufs_csum cg_cs; /* cylinder summary information */ |
546 | __fs32 cg_rotor; /* position of last used block */ |
547 | __fs32 cg_frotor; /* position of last used frag */ |
548 | __fs32 cg_irotor; /* position of last used inode */ |
549 | __fs32 cg_frsum[UFS_MAXFRAG]; /* counts of available frags */ |
550 | __fs32 cg_btotoff; /* (__u32) block totals per cylinder */ |
551 | __fs32 cg_boff; /* (short) free block positions */ |
552 | __fs32 cg_iusedoff; /* (char) used inode map */ |
553 | __fs32 cg_freeoff; /* (u_char) free block map */ |
554 | __fs32 cg_nextfreeoff; /* (u_char) next available space */ |
555 | union { |
556 | struct { |
557 | __fs32 cg_clustersumoff; /* (u_int32) counts of avail clusters */ |
558 | __fs32 cg_clusteroff; /* (u_int8) free cluster map */ |
559 | __fs32 cg_nclusterblks; /* number of clusters this cg */ |
560 | __fs32 cg_sparecon[13]; /* reserved for future use */ |
561 | } cg_44; |
562 | struct { |
563 | __fs32 cg_clustersumoff;/* (u_int32) counts of avail clusters */ |
564 | __fs32 cg_clusteroff; /* (u_int8) free cluster map */ |
565 | __fs32 cg_nclusterblks;/* number of clusters this cg */ |
566 | __fs32 cg_niblk; /* number of inode blocks this cg */ |
567 | __fs32 cg_initediblk; /* last initialized inode */ |
568 | __fs32 cg_sparecon32[3];/* reserved for future use */ |
569 | __fs64 cg_time; /* time last written */ |
570 | __fs64 cg_sparecon[3]; /* reserved for future use */ |
571 | } cg_u2; |
572 | __fs32 cg_sparecon[16]; /* reserved for future use */ |
573 | } cg_u; |
574 | __u8 cg_space[1]; /* space for cylinder group maps */ |
575 | /* actually longer */ |
576 | }; |
577 | |
578 | /* Historic Cylinder group info */ |
579 | struct ufs_old_cylinder_group { |
580 | __fs32 cg_link; /* linked list of cyl groups */ |
581 | __fs32 cg_rlink; /* for incore cyl groups */ |
582 | __fs32 cg_time; /* time last written */ |
583 | __fs32 cg_cgx; /* we are the cgx'th cylinder group */ |
584 | __fs16 cg_ncyl; /* number of cyl's this cg */ |
585 | __fs16 cg_niblk; /* number of inode blocks this cg */ |
586 | __fs32 cg_ndblk; /* number of data blocks this cg */ |
587 | struct ufs_csum cg_cs; /* cylinder summary information */ |
588 | __fs32 cg_rotor; /* position of last used block */ |
589 | __fs32 cg_frotor; /* position of last used frag */ |
590 | __fs32 cg_irotor; /* position of last used inode */ |
591 | __fs32 cg_frsum[8]; /* counts of available frags */ |
592 | __fs32 cg_btot[32]; /* block totals per cylinder */ |
593 | __fs16 cg_b[32][8]; /* positions of free blocks */ |
594 | __u8 cg_iused[256]; /* used inode map */ |
595 | __fs32 cg_magic; /* magic number */ |
596 | __u8 cg_free[1]; /* free block map */ |
597 | /* actually longer */ |
598 | }; |
599 | |
600 | /* |
601 | * structure of an on-disk inode |
602 | */ |
603 | struct ufs_inode { |
604 | __fs16 ui_mode; /* 0x0 */ |
605 | __fs16 ui_nlink; /* 0x2 */ |
606 | union { |
607 | struct { |
608 | __fs16 ui_suid; /* 0x4 */ |
609 | __fs16 ui_sgid; /* 0x6 */ |
610 | } oldids; |
611 | __fs32 ui_inumber; /* 0x4 lsf: inode number */ |
612 | __fs32 ui_author; /* 0x4 GNU HURD: author */ |
613 | } ui_u1; |
614 | __fs64 ui_size; /* 0x8 */ |
615 | struct ufs_timeval ui_atime; /* 0x10 access */ |
616 | struct ufs_timeval ui_mtime; /* 0x18 modification */ |
617 | struct ufs_timeval ui_ctime; /* 0x20 creation */ |
618 | union { |
619 | struct { |
620 | __fs32 ui_db[UFS_NDADDR];/* 0x28 data blocks */ |
621 | __fs32 ui_ib[UFS_NINDIR];/* 0x58 indirect blocks */ |
622 | } ui_addr; |
623 | __u8 ui_symlink[4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */ |
624 | } ui_u2; |
625 | __fs32 ui_flags; /* 0x64 immutable, append-only... */ |
626 | __fs32 ui_blocks; /* 0x68 blocks in use */ |
627 | __fs32 ui_gen; /* 0x6c like ext2 i_version, for NFS support */ |
628 | union { |
629 | struct { |
630 | __fs32 ui_shadow; /* 0x70 shadow inode with security data */ |
631 | __fs32 ui_uid; /* 0x74 long EFT version of uid */ |
632 | __fs32 ui_gid; /* 0x78 long EFT version of gid */ |
633 | __fs32 ui_oeftflag; /* 0x7c reserved */ |
634 | } ui_sun; |
635 | struct { |
636 | __fs32 ui_uid; /* 0x70 File owner */ |
637 | __fs32 ui_gid; /* 0x74 File group */ |
638 | __fs32 ui_spare[2]; /* 0x78 reserved */ |
639 | } ui_44; |
640 | struct { |
641 | __fs32 ui_uid; /* 0x70 */ |
642 | __fs32 ui_gid; /* 0x74 */ |
643 | __fs16 ui_modeh; /* 0x78 mode high bits */ |
644 | __fs16 ui_spare; /* 0x7A unused */ |
645 | __fs32 ui_trans; /* 0x7c filesystem translator */ |
646 | } ui_hurd; |
647 | } ui_u3; |
648 | }; |
649 | |
650 | #define UFS_NXADDR 2 /* External addresses in inode. */ |
651 | struct ufs2_inode { |
652 | __fs16 ui_mode; /* 0: IFMT, permissions; see below. */ |
653 | __fs16 ui_nlink; /* 2: File link count. */ |
654 | __fs32 ui_uid; /* 4: File owner. */ |
655 | __fs32 ui_gid; /* 8: File group. */ |
656 | __fs32 ui_blksize; /* 12: Inode blocksize. */ |
657 | __fs64 ui_size; /* 16: File byte count. */ |
658 | __fs64 ui_blocks; /* 24: Bytes actually held. */ |
659 | __fs64 ui_atime; /* 32: Last access time. */ |
660 | __fs64 ui_mtime; /* 40: Last modified time. */ |
661 | __fs64 ui_ctime; /* 48: Last inode change time. */ |
662 | __fs64 ui_birthtime; /* 56: Inode creation time. */ |
663 | __fs32 ui_mtimensec; /* 64: Last modified time. */ |
664 | __fs32 ui_atimensec; /* 68: Last access time. */ |
665 | __fs32 ui_ctimensec; /* 72: Last inode change time. */ |
666 | __fs32 ui_birthnsec; /* 76: Inode creation time. */ |
667 | __fs32 ui_gen; /* 80: Generation number. */ |
668 | __fs32 ui_kernflags; /* 84: Kernel flags. */ |
669 | __fs32 ui_flags; /* 88: Status flags (chflags). */ |
670 | __fs32 ui_extsize; /* 92: External attributes block. */ |
671 | __fs64 ui_extb[UFS_NXADDR];/* 96: External attributes block. */ |
672 | union { |
673 | struct { |
674 | __fs64 ui_db[UFS_NDADDR]; /* 112: Direct disk blocks. */ |
675 | __fs64 ui_ib[UFS_NINDIR];/* 208: Indirect disk blocks.*/ |
676 | } ui_addr; |
677 | __u8 ui_symlink[2*4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */ |
678 | } ui_u2; |
679 | __fs64 ui_spare[3]; /* 232: Reserved; currently unused */ |
680 | }; |
681 | |
682 | |
683 | /* FreeBSD has these in sys/stat.h */ |
684 | /* ui_flags that can be set by a file owner */ |
685 | #define UFS_UF_SETTABLE 0x0000ffff |
686 | #define UFS_UF_NODUMP 0x00000001 /* do not dump */ |
687 | #define UFS_UF_IMMUTABLE 0x00000002 /* immutable (can't "change") */ |
688 | #define UFS_UF_APPEND 0x00000004 /* append-only */ |
689 | #define UFS_UF_OPAQUE 0x00000008 /* directory is opaque (unionfs) */ |
690 | #define UFS_UF_NOUNLINK 0x00000010 /* can't be removed or renamed */ |
691 | /* ui_flags that only root can set */ |
692 | #define UFS_SF_SETTABLE 0xffff0000 |
693 | #define UFS_SF_ARCHIVED 0x00010000 /* archived */ |
694 | #define UFS_SF_IMMUTABLE 0x00020000 /* immutable (can't "change") */ |
695 | #define UFS_SF_APPEND 0x00040000 /* append-only */ |
696 | #define UFS_SF_NOUNLINK 0x00100000 /* can't be removed or renamed */ |
697 | |
698 | /* |
699 | * This structure is used for reading disk structures larger |
700 | * than the size of fragment. |
701 | */ |
702 | struct ufs_buffer_head { |
703 | __u64 fragment; /* first fragment */ |
704 | __u64 count; /* number of fragments */ |
705 | struct buffer_head * bh[UFS_MAXFRAG]; /* buffers */ |
706 | }; |
707 | |
708 | struct ufs_cg_private_info { |
709 | struct ufs_buffer_head c_ubh; |
710 | __u32 c_cgx; /* number of cylidner group */ |
711 | __u16 c_ncyl; /* number of cyl's this cg */ |
712 | __u16 c_niblk; /* number of inode blocks this cg */ |
713 | __u32 c_ndblk; /* number of data blocks this cg */ |
714 | __u32 c_rotor; /* position of last used block */ |
715 | __u32 c_frotor; /* position of last used frag */ |
716 | __u32 c_irotor; /* position of last used inode */ |
717 | __u32 c_btotoff; /* (__u32) block totals per cylinder */ |
718 | __u32 c_boff; /* (short) free block positions */ |
719 | __u32 c_iusedoff; /* (char) used inode map */ |
720 | __u32 c_freeoff; /* (u_char) free block map */ |
721 | __u32 c_nextfreeoff; /* (u_char) next available space */ |
722 | __u32 c_clustersumoff;/* (u_int32) counts of avail clusters */ |
723 | __u32 c_clusteroff; /* (u_int8) free cluster map */ |
724 | __u32 c_nclusterblks; /* number of clusters this cg */ |
725 | }; |
726 | |
727 | |
728 | struct ufs_sb_private_info { |
729 | struct ufs_buffer_head s_ubh; /* buffer containing super block */ |
730 | struct ufs_csum_core cs_total; |
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 */ |
734 | __u32 s_dblkno; /* offset of first data after cg */ |
735 | __u32 s_cgoffset; /* cylinder group offset in cylinder */ |
736 | __u32 s_cgmask; /* used to calc mod fs_ntrak */ |
737 | __u64 s_size; /* number of blocks (fragments) in fs */ |
738 | __u64 s_dsize; /* number of data blocks in fs */ |
739 | __u32 s_ncg; /* number of cylinder groups */ |
740 | __u32 s_bsize; /* size of basic blocks */ |
741 | __u32 s_fsize; /* size of fragments */ |
742 | __u32 s_fpb; /* fragments per block */ |
743 | __u32 s_minfree; /* minimum percentage of free blocks */ |
744 | __u32 s_bmask; /* `blkoff'' calc of blk offsets */ |
745 | __u32 s_fmask; /* s_fsize mask */ |
746 | __u32 s_bshift; /* `lblkno'' calc of logical blkno */ |
747 | __u32 s_fshift; /* s_fsize shift */ |
748 | __u32 s_fpbshift; /* fragments per block shift */ |
749 | __u32 s_fsbtodb; /* fsbtodb and dbtofsb shift constant */ |
750 | __u32 s_sbsize; /* actual size of super block */ |
751 | __u32 s_csmask; /* csum block offset */ |
752 | __u32 s_csshift; /* csum block number */ |
753 | __u32 s_nindir; /* value of NINDIR */ |
754 | __u32 s_inopb; /* value of INOPB */ |
755 | __u32 s_nspf; /* value of NSPF */ |
756 | __u32 s_npsect; /* # sectors/track including spares */ |
757 | __u32 s_interleave; /* hardware sector interleave */ |
758 | __u32 s_trackskew; /* sector 0 skew, per track */ |
759 | __u64 s_csaddr; /* blk addr of cyl grp summary area */ |
760 | __u32 s_cssize; /* size of cyl grp summary area */ |
761 | __u32 s_cgsize; /* cylinder group size */ |
762 | __u32 s_ntrak; /* tracks per cylinder */ |
763 | __u32 s_nsect; /* sectors per track */ |
764 | __u32 s_spc; /* sectors per cylinder */ |
765 | __u32 s_ipg; /* inodes per cylinder group */ |
766 | __u32 s_fpg; /* fragments per group */ |
767 | __u32 s_cpc; /* cyl per cycle in postbl */ |
768 | __s32 s_contigsumsize;/* size of cluster summary array, 44bsd */ |
769 | __s64 s_qbmask; /* ~usb_bmask */ |
770 | __s64 s_qfmask; /* ~usb_fmask */ |
771 | __s32 s_postblformat; /* format of positional layout tables */ |
772 | __s32 s_nrpos; /* number of rotational positions */ |
773 | __s32 s_postbloff; /* (__s16) rotation block list head */ |
774 | __s32 s_rotbloff; /* (__u8) blocks for each rotation */ |
775 | |
776 | __u32 s_fpbmask; /* fragments per block mask */ |
777 | __u32 s_apb; /* address per block */ |
778 | __u32 s_2apb; /* address per block^2 */ |
779 | __u32 s_3apb; /* address per block^3 */ |
780 | __u32 s_apbmask; /* address per block mask */ |
781 | __u32 s_apbshift; /* address per block shift */ |
782 | __u32 s_2apbshift; /* address per block shift * 2 */ |
783 | __u32 s_3apbshift; /* address per block shift * 3 */ |
784 | __u32 s_nspfshift; /* number of sector per fragment shift */ |
785 | __u32 s_nspb; /* number of sector per block */ |
786 | __u32 s_inopf; /* inodes per fragment */ |
787 | __u32 s_sbbase; /* offset of NeXTstep superblock */ |
788 | __u32 s_bpf; /* bits per fragment */ |
789 | __u32 s_bpfshift; /* bits per fragment shift*/ |
790 | __u32 s_bpfmask; /* bits per fragment mask */ |
791 | |
792 | __u32 s_maxsymlinklen;/* upper limit on fast symlinks' size */ |
793 | __s32 fs_magic; /* filesystem magic */ |
794 | unsigned int s_dirblksize; |
795 | __u64 s_root_blocks; |
796 | __u64 s_time_to_space; |
797 | __u64 s_space_to_time; |
798 | }; |
799 | |
800 | /* |
801 | * Sizes of this structures are: |
802 | * ufs_super_block_first 512 |
803 | * ufs_super_block_second 512 |
804 | * ufs_super_block_third 356 |
805 | */ |
806 | struct ufs_super_block_first { |
807 | union { |
808 | struct { |
809 | __fs32 fs_link; /* UNUSED */ |
810 | } fs_42; |
811 | struct { |
812 | __fs32 fs_state; /* file system state flag */ |
813 | } fs_sun; |
814 | } fs_u0; |
815 | __fs32 fs_rlink; |
816 | __fs32 fs_sblkno; |
817 | __fs32 fs_cblkno; |
818 | __fs32 fs_iblkno; |
819 | __fs32 fs_dblkno; |
820 | __fs32 fs_cgoffset; |
821 | __fs32 fs_cgmask; |
822 | __fs32 fs_time; |
823 | __fs32 fs_size; |
824 | __fs32 fs_dsize; |
825 | __fs32 fs_ncg; |
826 | __fs32 fs_bsize; |
827 | __fs32 fs_fsize; |
828 | __fs32 fs_frag; |
829 | __fs32 fs_minfree; |
830 | __fs32 fs_rotdelay; |
831 | __fs32 fs_rps; |
832 | __fs32 fs_bmask; |
833 | __fs32 fs_fmask; |
834 | __fs32 fs_bshift; |
835 | __fs32 fs_fshift; |
836 | __fs32 fs_maxcontig; |
837 | __fs32 fs_maxbpg; |
838 | __fs32 fs_fragshift; |
839 | __fs32 fs_fsbtodb; |
840 | __fs32 fs_sbsize; |
841 | __fs32 fs_csmask; |
842 | __fs32 fs_csshift; |
843 | __fs32 fs_nindir; |
844 | __fs32 fs_inopb; |
845 | __fs32 fs_nspf; |
846 | __fs32 fs_optim; |
847 | union { |
848 | struct { |
849 | __fs32 fs_npsect; |
850 | } fs_sun; |
851 | struct { |
852 | __fs32 fs_state; |
853 | } fs_sunx86; |
854 | } fs_u1; |
855 | __fs32 fs_interleave; |
856 | __fs32 fs_trackskew; |
857 | __fs32 fs_id[2]; |
858 | __fs32 fs_csaddr; |
859 | __fs32 fs_cssize; |
860 | __fs32 fs_cgsize; |
861 | __fs32 fs_ntrak; |
862 | __fs32 fs_nsect; |
863 | __fs32 fs_spc; |
864 | __fs32 fs_ncyl; |
865 | __fs32 fs_cpg; |
866 | __fs32 fs_ipg; |
867 | __fs32 fs_fpg; |
868 | struct ufs_csum fs_cstotal; |
869 | __s8 fs_fmod; |
870 | __s8 fs_clean; |
871 | __s8 fs_ronly; |
872 | __s8 fs_flags; |
873 | __s8 fs_fsmnt[UFS_MAXMNTLEN - 212]; |
874 | |
875 | }; |
876 | |
877 | struct ufs_super_block_second { |
878 | union { |
879 | struct { |
880 | __s8 fs_fsmnt[212]; |
881 | __fs32 fs_cgrotor; |
882 | __fs32 fs_csp[UFS_MAXCSBUFS]; |
883 | __fs32 fs_maxcluster; |
884 | __fs32 fs_cpc; |
885 | __fs16 fs_opostbl[82]; |
886 | } fs_u1; |
887 | struct { |
888 | __s8 fs_fsmnt[UFS2_MAXMNTLEN - UFS_MAXMNTLEN + 212]; |
889 | __u8 fs_volname[UFS2_MAXVOLLEN]; |
890 | __fs64 fs_swuid; |
891 | __fs32 fs_pad; |
892 | __fs32 fs_cgrotor; |
893 | __fs32 fs_ocsp[UFS2_NOCSPTRS]; |
894 | __fs32 fs_contigdirs; |
895 | __fs32 fs_csp; |
896 | __fs32 fs_maxcluster; |
897 | __fs32 fs_active; |
898 | __fs32 fs_old_cpc; |
899 | __fs32 fs_maxbsize; |
900 | __fs64 fs_sparecon64[17]; |
901 | __fs64 fs_sblockloc; |
902 | __fs64 cs_ndir; |
903 | __fs64 cs_nbfree; |
904 | } fs_u2; |
905 | } fs_un; |
906 | }; |
907 | |
908 | struct ufs_super_block_third { |
909 | union { |
910 | struct { |
911 | __fs16 fs_opostbl[46]; |
912 | } fs_u1; |
913 | struct { |
914 | __fs64 cs_nifree; /* number of free inodes */ |
915 | __fs64 cs_nffree; /* number of free frags */ |
916 | __fs64 cs_numclusters; /* number of free clusters */ |
917 | __fs64 cs_spare[3]; /* future expansion */ |
918 | struct ufs_timeval fs_time; /* last time written */ |
919 | __fs64 fs_size; /* number of blocks in fs */ |
920 | __fs64 fs_dsize; /* number of data blocks in fs */ |
921 | __fs64 fs_csaddr; /* blk addr of cyl grp summary area */ |
922 | __fs64 fs_pendingblocks;/* blocks in process of being freed */ |
923 | __fs32 fs_pendinginodes;/*inodes in process of being freed */ |
924 | } __attribute__ ((packed)) fs_u2; |
925 | } fs_un1; |
926 | union { |
927 | struct { |
928 | __fs32 fs_sparecon[53];/* reserved for future constants */ |
929 | __fs32 fs_reclaim; |
930 | __fs32 fs_sparecon2[1]; |
931 | __fs32 fs_state; /* file system state time stamp */ |
932 | __fs32 fs_qbmask[2]; /* ~usb_bmask */ |
933 | __fs32 fs_qfmask[2]; /* ~usb_fmask */ |
934 | } fs_sun; |
935 | struct { |
936 | __fs32 fs_sparecon[53];/* reserved for future constants */ |
937 | __fs32 fs_reclaim; |
938 | __fs32 fs_sparecon2[1]; |
939 | __fs32 fs_npsect; /* # sectors/track including spares */ |
940 | __fs32 fs_qbmask[2]; /* ~usb_bmask */ |
941 | __fs32 fs_qfmask[2]; /* ~usb_fmask */ |
942 | } fs_sunx86; |
943 | struct { |
944 | __fs32 fs_sparecon[50];/* reserved for future constants */ |
945 | __fs32 fs_contigsumsize;/* size of cluster summary array */ |
946 | __fs32 fs_maxsymlinklen;/* max length of an internal symlink */ |
947 | __fs32 fs_inodefmt; /* format of on-disk inodes */ |
948 | __fs32 fs_maxfilesize[2]; /* max representable file size */ |
949 | __fs32 fs_qbmask[2]; /* ~usb_bmask */ |
950 | __fs32 fs_qfmask[2]; /* ~usb_fmask */ |
951 | __fs32 fs_state; /* file system state time stamp */ |
952 | } fs_44; |
953 | } fs_un2; |
954 | __fs32 fs_postblformat; |
955 | __fs32 fs_nrpos; |
956 | __fs32 fs_postbloff; |
957 | __fs32 fs_rotbloff; |
958 | __fs32 fs_magic; |
959 | __u8 fs_space[1]; |
960 | }; |
961 | |
962 | #endif /* __LINUX_UFS_FS_H */ |
963 | |