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[PATCH] export ufs_fs.h to userspace
[GitHub/LineageOS/android_kernel_motorola_exynos9610.git] / include / linux / ufs_fs.h
1 /*
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>
35 #include <linux/stat.h>
36 #include <linux/fs.h>
37
38 #ifndef __KERNEL__
39 typedef __u64 __fs64;
40 typedef __u32 __fs32;
41 typedef __u16 __fs16;
42 #else
43 typedef __u64 __bitwise __fs64;
44 typedef __u32 __bitwise __fs32;
45 typedef __u16 __bitwise __fs16;
46 #endif
47
48 #ifdef __KERNEL__
49 #include <linux/ufs_fs_i.h>
50 #include <linux/ufs_fs_sb.h>
51 #endif
52
53 #define UFS_BBLOCK 0
54 #define UFS_BBSIZE 8192
55 #define UFS_SBLOCK 8192
56 #define UFS_SBSIZE 8192
57
58 #define UFS_SECTOR_SIZE 512
59 #define UFS_SECTOR_BITS 9
60 #define UFS_MAGIC 0x00011954
61 #define UFS2_MAGIC 0x19540119
62 #define UFS_CIGAM 0x54190100 /* byteswapped MAGIC */
63
64 /* Copied from FreeBSD */
65 /*
66 * Each disk drive contains some number of filesystems.
67 * A filesystem consists of a number of cylinder groups.
68 * Each cylinder group has inodes and data.
69 *
70 * A filesystem is described by its super-block, which in turn
71 * describes the cylinder groups. The super-block is critical
72 * data and is replicated in each cylinder group to protect against
73 * catastrophic loss. This is done at `newfs' time and the critical
74 * super-block data does not change, so the copies need not be
75 * referenced further unless disaster strikes.
76 *
77 * For filesystem fs, the offsets of the various blocks of interest
78 * are given in the super block as:
79 * [fs->fs_sblkno] Super-block
80 * [fs->fs_cblkno] Cylinder group block
81 * [fs->fs_iblkno] Inode blocks
82 * [fs->fs_dblkno] Data blocks
83 * The beginning of cylinder group cg in fs, is given by
84 * the ``cgbase(fs, cg)'' macro.
85 *
86 * Depending on the architecture and the media, the superblock may
87 * reside in any one of four places. For tiny media where every block
88 * counts, it is placed at the very front of the partition. Historically,
89 * UFS1 placed it 8K from the front to leave room for the disk label and
90 * a small bootstrap. For UFS2 it got moved to 64K from the front to leave
91 * room for the disk label and a bigger bootstrap, and for really piggy
92 * systems we check at 256K from the front if the first three fail. In
93 * all cases the size of the superblock will be SBLOCKSIZE. All values are
94 * given in byte-offset form, so they do not imply a sector size. The
95 * SBLOCKSEARCH specifies the order in which the locations should be searched.
96 */
97 #define SBLOCK_FLOPPY 0
98 #define SBLOCK_UFS1 8192
99 #define SBLOCK_UFS2 65536
100 #define SBLOCK_PIGGY 262144
101 #define SBLOCKSIZE 8192
102 #define SBLOCKSEARCH \
103 { SBLOCK_UFS2, SBLOCK_UFS1, SBLOCK_FLOPPY, SBLOCK_PIGGY, -1 }
104
105
106 /* HP specific MAGIC values */
107
108 #define UFS_MAGIC_LFN 0x00095014 /* fs supports filenames > 14 chars */
109 #define UFS_CIGAM_LFN 0x14500900 /* srahc 41 < semanelif stroppus sf */
110
111 #define UFS_MAGIC_SEC 0x00612195 /* B1 security fs */
112 #define UFS_CIGAM_SEC 0x95216100
113
114 #define UFS_MAGIC_FEA 0x00195612 /* fs_featurebits supported */
115 #define UFS_CIGAM_FEA 0x12561900
116
117 #define UFS_MAGIC_4GB 0x05231994 /* fs > 4 GB && fs_featurebits */
118 #define UFS_CIGAM_4GB 0x94192305
119
120 /* Seems somebody at HP goofed here. B1 and lfs are both 0x2 !?! */
121 #define UFS_FSF_LFN 0x00000001 /* long file names */
122 #define UFS_FSF_B1 0x00000002 /* B1 security */
123 #define UFS_FSF_LFS 0x00000002 /* large files */
124 #define UFS_FSF_LUID 0x00000004 /* large UIDs */
125
126 /* End of HP stuff */
127
128
129 #define UFS_BSIZE 8192
130 #define UFS_MINBSIZE 4096
131 #define UFS_FSIZE 1024
132 #define UFS_MAXFRAG (UFS_BSIZE / UFS_FSIZE)
133
134 #define UFS_NDADDR 12
135 #define UFS_NINDIR 3
136
137 #define UFS_IND_BLOCK (UFS_NDADDR + 0)
138 #define UFS_DIND_BLOCK (UFS_NDADDR + 1)
139 #define UFS_TIND_BLOCK (UFS_NDADDR + 2)
140
141 #define UFS_NDIR_FRAGMENT (UFS_NDADDR << uspi->s_fpbshift)
142 #define UFS_IND_FRAGMENT (UFS_IND_BLOCK << uspi->s_fpbshift)
143 #define UFS_DIND_FRAGMENT (UFS_DIND_BLOCK << uspi->s_fpbshift)
144 #define UFS_TIND_FRAGMENT (UFS_TIND_BLOCK << uspi->s_fpbshift)
145
146 #define UFS_ROOTINO 2
147 #define UFS_FIRST_INO (UFS_ROOTINO + 1)
148
149 #define UFS_USEEFT ((__u16)65535)
150
151 #define UFS_FSOK 0x7c269d38
152 #define UFS_FSACTIVE ((__s8)0x00)
153 #define UFS_FSCLEAN ((__s8)0x01)
154 #define UFS_FSSTABLE ((__s8)0x02)
155 #define UFS_FSOSF1 ((__s8)0x03) /* is this correct for DEC OSF/1? */
156 #define UFS_FSBAD ((__s8)0xff)
157
158 /* From here to next blank line, s_flags for ufs_sb_info */
159 /* directory entry encoding */
160 #define UFS_DE_MASK 0x00000010 /* mask for the following */
161 #define UFS_DE_OLD 0x00000000
162 #define UFS_DE_44BSD 0x00000010
163 /* uid encoding */
164 #define UFS_UID_MASK 0x00000060 /* mask for the following */
165 #define UFS_UID_OLD 0x00000000
166 #define UFS_UID_44BSD 0x00000020
167 #define UFS_UID_EFT 0x00000040
168 /* superblock state encoding */
169 #define UFS_ST_MASK 0x00000700 /* mask for the following */
170 #define UFS_ST_OLD 0x00000000
171 #define UFS_ST_44BSD 0x00000100
172 #define UFS_ST_SUN 0x00000200
173 #define UFS_ST_SUNx86 0x00000400
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 /* mount options */
190 #define UFS_MOUNT_ONERROR 0x0000000F
191 #define UFS_MOUNT_ONERROR_PANIC 0x00000001
192 #define UFS_MOUNT_ONERROR_LOCK 0x00000002
193 #define UFS_MOUNT_ONERROR_UMOUNT 0x00000004
194 #define UFS_MOUNT_ONERROR_REPAIR 0x00000008
195
196 #define UFS_MOUNT_UFSTYPE 0x0000FFF0
197 #define UFS_MOUNT_UFSTYPE_OLD 0x00000010
198 #define UFS_MOUNT_UFSTYPE_44BSD 0x00000020
199 #define UFS_MOUNT_UFSTYPE_SUN 0x00000040
200 #define UFS_MOUNT_UFSTYPE_NEXTSTEP 0x00000080
201 #define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD 0x00000100
202 #define UFS_MOUNT_UFSTYPE_OPENSTEP 0x00000200
203 #define UFS_MOUNT_UFSTYPE_SUNx86 0x00000400
204 #define UFS_MOUNT_UFSTYPE_HP 0x00000800
205 #define UFS_MOUNT_UFSTYPE_UFS2 0x00001000
206
207 #define ufs_clear_opt(o,opt) o &= ~UFS_MOUNT_##opt
208 #define ufs_set_opt(o,opt) o |= UFS_MOUNT_##opt
209 #define ufs_test_opt(o,opt) ((o) & UFS_MOUNT_##opt)
210
211 /*
212 * MINFREE gives the minimum acceptable percentage of file system
213 * blocks which may be free. If the freelist drops below this level
214 * only the superuser may continue to allocate blocks. This may
215 * be set to 0 if no reserve of free blocks is deemed necessary,
216 * however throughput drops by fifty percent if the file system
217 * is run at between 95% and 100% full; thus the minimum default
218 * value of fs_minfree is 5%. However, to get good clustering
219 * performance, 10% is a better choice. hence we use 10% as our
220 * default value. With 10% free space, fragmentation is not a
221 * problem, so we choose to optimize for time.
222 */
223 #define UFS_MINFREE 5
224 #define UFS_DEFAULTOPT UFS_OPTTIME
225
226 /*
227 * Debug code
228 */
229 #ifdef CONFIG_UFS_DEBUG
230 # define UFSD(f, a...) { \
231 printk ("UFSD (%s, %d): %s:", \
232 __FILE__, __LINE__, __FUNCTION__); \
233 printk (f, ## a); \
234 }
235 #else
236 # define UFSD(f, a...) /**/
237 #endif
238
239 /*
240 * Turn file system block numbers into disk block addresses.
241 * This maps file system blocks to device size blocks.
242 */
243 #define ufs_fsbtodb(uspi, b) ((b) << (uspi)->s_fsbtodb)
244 #define ufs_dbtofsb(uspi, b) ((b) >> (uspi)->s_fsbtodb)
245
246 /*
247 * Cylinder group macros to locate things in cylinder groups.
248 * They calc file system addresses of cylinder group data structures.
249 */
250 #define ufs_cgbase(c) (uspi->s_fpg * (c))
251 #define ufs_cgstart(c) ((uspi)->fs_magic == UFS2_MAGIC ? ufs_cgbase(c) : \
252 (ufs_cgbase(c) + uspi->s_cgoffset * ((c) & ~uspi->s_cgmask)))
253 #define ufs_cgsblock(c) (ufs_cgstart(c) + uspi->s_sblkno) /* super blk */
254 #define ufs_cgcmin(c) (ufs_cgstart(c) + uspi->s_cblkno) /* cg block */
255 #define ufs_cgimin(c) (ufs_cgstart(c) + uspi->s_iblkno) /* inode blk */
256 #define ufs_cgdmin(c) (ufs_cgstart(c) + uspi->s_dblkno) /* 1st data */
257
258 /*
259 * Macros for handling inode numbers:
260 * inode number to file system block offset.
261 * inode number to cylinder group number.
262 * inode number to file system block address.
263 */
264 #define ufs_inotocg(x) ((x) / uspi->s_ipg)
265 #define ufs_inotocgoff(x) ((x) % uspi->s_ipg)
266 #define ufs_inotofsba(x) (ufs_cgimin(ufs_inotocg(x)) + ufs_inotocgoff(x) / uspi->s_inopf)
267 #define ufs_inotofsbo(x) ((x) % uspi->s_inopf)
268
269 /*
270 * Give cylinder group number for a file system block.
271 * Give cylinder group block number for a file system block.
272 */
273 #define ufs_dtog(d) ((d) / uspi->s_fpg)
274 #define ufs_dtogd(d) ((d) % uspi->s_fpg)
275
276 /*
277 * Compute the cylinder and rotational position of a cyl block addr.
278 */
279 #define ufs_cbtocylno(bno) \
280 ((bno) * uspi->s_nspf / uspi->s_spc)
281 #define ufs_cbtorpos(bno) \
282 ((((bno) * uspi->s_nspf % uspi->s_spc / uspi->s_nsect \
283 * uspi->s_trackskew + (bno) * uspi->s_nspf % uspi->s_spc \
284 % uspi->s_nsect * uspi->s_interleave) % uspi->s_nsect \
285 * uspi->s_nrpos) / uspi->s_npsect)
286
287 /*
288 * The following macros optimize certain frequently calculated
289 * quantities by using shifts and masks in place of divisions
290 * modulos and multiplications.
291 */
292 #define ufs_blkoff(loc) ((loc) & uspi->s_qbmask)
293 #define ufs_fragoff(loc) ((loc) & uspi->s_qfmask)
294 #define ufs_lblktosize(blk) ((blk) << uspi->s_bshift)
295 #define ufs_lblkno(loc) ((loc) >> uspi->s_bshift)
296 #define ufs_numfrags(loc) ((loc) >> uspi->s_fshift)
297 #define ufs_blkroundup(size) (((size) + uspi->s_qbmask) & uspi->s_bmask)
298 #define ufs_fragroundup(size) (((size) + uspi->s_qfmask) & uspi->s_fmask)
299 #define ufs_fragstoblks(frags) ((frags) >> uspi->s_fpbshift)
300 #define ufs_blkstofrags(blks) ((blks) << uspi->s_fpbshift)
301 #define ufs_fragnum(fsb) ((fsb) & uspi->s_fpbmask)
302 #define ufs_blknum(fsb) ((fsb) & ~uspi->s_fpbmask)
303
304 #define UFS_MAXNAMLEN 255
305 #define UFS_MAXMNTLEN 512
306 #define UFS2_MAXMNTLEN 468
307 #define UFS2_MAXVOLLEN 32
308 #define UFS_MAXCSBUFS 31
309 #define UFS_LINK_MAX 32000
310 /*
311 #define UFS2_NOCSPTRS ((128 / sizeof(void *)) - 4)
312 */
313 #define UFS2_NOCSPTRS 28
314
315 /*
316 * UFS_DIR_PAD defines the directory entries boundaries
317 * (must be a multiple of 4)
318 */
319 #define UFS_DIR_PAD 4
320 #define UFS_DIR_ROUND (UFS_DIR_PAD - 1)
321 #define UFS_DIR_REC_LEN(name_len) (((name_len) + 1 + 8 + UFS_DIR_ROUND) & ~UFS_DIR_ROUND)
322
323 struct ufs_timeval {
324 __fs32 tv_sec;
325 __fs32 tv_usec;
326 };
327
328 struct ufs_dir_entry {
329 __fs32 d_ino; /* inode number of this entry */
330 __fs16 d_reclen; /* length of this entry */
331 union {
332 __fs16 d_namlen; /* actual length of d_name */
333 struct {
334 __u8 d_type; /* file type */
335 __u8 d_namlen; /* length of string in d_name */
336 } d_44;
337 } d_u;
338 __u8 d_name[UFS_MAXNAMLEN + 1]; /* file name */
339 };
340
341 struct ufs_csum {
342 __fs32 cs_ndir; /* number of directories */
343 __fs32 cs_nbfree; /* number of free blocks */
344 __fs32 cs_nifree; /* number of free inodes */
345 __fs32 cs_nffree; /* number of free frags */
346 };
347 struct ufs2_csum_total {
348 __fs64 cs_ndir; /* number of directories */
349 __fs64 cs_nbfree; /* number of free blocks */
350 __fs64 cs_nifree; /* number of free inodes */
351 __fs64 cs_nffree; /* number of free frags */
352 __fs64 cs_numclusters; /* number of free clusters */
353 __fs64 cs_spare[3]; /* future expansion */
354 };
355
356 struct ufs_csum_core {
357 __u64 cs_ndir; /* number of directories */
358 __u64 cs_nbfree; /* number of free blocks */
359 __u64 cs_nifree; /* number of free inodes */
360 __u64 cs_nffree; /* number of free frags */
361 __u64 cs_numclusters; /* number of free clusters */
362 };
363
364 /*
365 * File system flags
366 */
367 #define UFS_UNCLEAN 0x01 /* file system not clean at mount (unused) */
368 #define UFS_DOSOFTDEP 0x02 /* file system using soft dependencies */
369 #define UFS_NEEDSFSCK 0x04 /* needs sync fsck (FreeBSD compat, unused) */
370 #define UFS_INDEXDIRS 0x08 /* kernel supports indexed directories */
371 #define UFS_ACLS 0x10 /* file system has ACLs enabled */
372 #define UFS_MULTILABEL 0x20 /* file system is MAC multi-label */
373 #define UFS_FLAGS_UPDATED 0x80 /* flags have been moved to new location */
374
375 #if 0
376 /*
377 * This is the actual superblock, as it is laid out on the disk.
378 * Do NOT use this structure, because of sizeof(ufs_super_block) > 512 and
379 * it may occupy several blocks, use
380 * struct ufs_super_block_(first,second,third) instead.
381 */
382 struct ufs_super_block {
383 __fs32 fs_link; /* UNUSED */
384 __fs32 fs_rlink; /* UNUSED */
385 __fs32 fs_sblkno; /* addr of super-block in filesys */
386 __fs32 fs_cblkno; /* offset of cyl-block in filesys */
387 __fs32 fs_iblkno; /* offset of inode-blocks in filesys */
388 __fs32 fs_dblkno; /* offset of first data after cg */
389 __fs32 fs_cgoffset; /* cylinder group offset in cylinder */
390 __fs32 fs_cgmask; /* used to calc mod fs_ntrak */
391 __fs32 fs_time; /* last time written -- time_t */
392 __fs32 fs_size; /* number of blocks in fs */
393 __fs32 fs_dsize; /* number of data blocks in fs */
394 __fs32 fs_ncg; /* number of cylinder groups */
395 __fs32 fs_bsize; /* size of basic blocks in fs */
396 __fs32 fs_fsize; /* size of frag blocks in fs */
397 __fs32 fs_frag; /* number of frags in a block in fs */
398 /* these are configuration parameters */
399 __fs32 fs_minfree; /* minimum percentage of free blocks */
400 __fs32 fs_rotdelay; /* num of ms for optimal next block */
401 __fs32 fs_rps; /* disk revolutions per second */
402 /* these fields can be computed from the others */
403 __fs32 fs_bmask; /* ``blkoff'' calc of blk offsets */
404 __fs32 fs_fmask; /* ``fragoff'' calc of frag offsets */
405 __fs32 fs_bshift; /* ``lblkno'' calc of logical blkno */
406 __fs32 fs_fshift; /* ``numfrags'' calc number of frags */
407 /* these are configuration parameters */
408 __fs32 fs_maxcontig; /* max number of contiguous blks */
409 __fs32 fs_maxbpg; /* max number of blks per cyl group */
410 /* these fields can be computed from the others */
411 __fs32 fs_fragshift; /* block to frag shift */
412 __fs32 fs_fsbtodb; /* fsbtodb and dbtofsb shift constant */
413 __fs32 fs_sbsize; /* actual size of super block */
414 __fs32 fs_csmask; /* csum block offset */
415 __fs32 fs_csshift; /* csum block number */
416 __fs32 fs_nindir; /* value of NINDIR */
417 __fs32 fs_inopb; /* value of INOPB */
418 __fs32 fs_nspf; /* value of NSPF */
419 /* yet another configuration parameter */
420 __fs32 fs_optim; /* optimization preference, see below */
421 /* these fields are derived from the hardware */
422 union {
423 struct {
424 __fs32 fs_npsect; /* # sectors/track including spares */
425 } fs_sun;
426 struct {
427 __fs32 fs_state; /* file system state time stamp */
428 } fs_sunx86;
429 } fs_u1;
430 __fs32 fs_interleave; /* hardware sector interleave */
431 __fs32 fs_trackskew; /* sector 0 skew, per track */
432 /* a unique id for this filesystem (currently unused and unmaintained) */
433 /* In 4.3 Tahoe this space is used by fs_headswitch and fs_trkseek */
434 /* Neither of those fields is used in the Tahoe code right now but */
435 /* there could be problems if they are. */
436 __fs32 fs_id[2]; /* file system id */
437 /* sizes determined by number of cylinder groups and their sizes */
438 __fs32 fs_csaddr; /* blk addr of cyl grp summary area */
439 __fs32 fs_cssize; /* size of cyl grp summary area */
440 __fs32 fs_cgsize; /* cylinder group size */
441 /* these fields are derived from the hardware */
442 __fs32 fs_ntrak; /* tracks per cylinder */
443 __fs32 fs_nsect; /* sectors per track */
444 __fs32 fs_spc; /* sectors per cylinder */
445 /* this comes from the disk driver partitioning */
446 __fs32 fs_ncyl; /* cylinders in file system */
447 /* these fields can be computed from the others */
448 __fs32 fs_cpg; /* cylinders per group */
449 __fs32 fs_ipg; /* inodes per cylinder group */
450 __fs32 fs_fpg; /* blocks per group * fs_frag */
451 /* this data must be re-computed after crashes */
452 struct ufs_csum fs_cstotal; /* cylinder summary information */
453 /* these fields are cleared at mount time */
454 __s8 fs_fmod; /* super block modified flag */
455 __s8 fs_clean; /* file system is clean flag */
456 __s8 fs_ronly; /* mounted read-only flag */
457 __s8 fs_flags;
458 union {
459 struct {
460 __s8 fs_fsmnt[UFS_MAXMNTLEN];/* name mounted on */
461 __fs32 fs_cgrotor; /* last cg searched */
462 __fs32 fs_csp[UFS_MAXCSBUFS];/*list of fs_cs info buffers */
463 __fs32 fs_maxcluster;
464 __fs32 fs_cpc; /* cyl per cycle in postbl */
465 __fs16 fs_opostbl[16][8]; /* old rotation block list head */
466 } fs_u1;
467 struct {
468 __s8 fs_fsmnt[UFS2_MAXMNTLEN]; /* name mounted on */
469 __u8 fs_volname[UFS2_MAXVOLLEN]; /* volume name */
470 __fs64 fs_swuid; /* system-wide uid */
471 __fs32 fs_pad; /* due to alignment of fs_swuid */
472 __fs32 fs_cgrotor; /* last cg searched */
473 __fs32 fs_ocsp[UFS2_NOCSPTRS]; /*list of fs_cs info buffers */
474 __fs32 fs_contigdirs;/*# of contiguously allocated dirs */
475 __fs32 fs_csp; /* cg summary info buffer for fs_cs */
476 __fs32 fs_maxcluster;
477 __fs32 fs_active;/* used by snapshots to track fs */
478 __fs32 fs_old_cpc; /* cyl per cycle in postbl */
479 __fs32 fs_maxbsize;/*maximum blocking factor permitted */
480 __fs64 fs_sparecon64[17];/*old rotation block list head */
481 __fs64 fs_sblockloc; /* byte offset of standard superblock */
482 struct ufs2_csum_total fs_cstotal;/*cylinder summary information*/
483 struct ufs_timeval fs_time; /* last time written */
484 __fs64 fs_size; /* number of blocks in fs */
485 __fs64 fs_dsize; /* number of data blocks in fs */
486 __fs64 fs_csaddr; /* blk addr of cyl grp summary area */
487 __fs64 fs_pendingblocks;/* blocks in process of being freed */
488 __fs32 fs_pendinginodes;/*inodes in process of being freed */
489 } fs_u2;
490 } fs_u11;
491 union {
492 struct {
493 __fs32 fs_sparecon[53];/* reserved for future constants */
494 __fs32 fs_reclaim;
495 __fs32 fs_sparecon2[1];
496 __fs32 fs_state; /* file system state time stamp */
497 __fs32 fs_qbmask[2]; /* ~usb_bmask */
498 __fs32 fs_qfmask[2]; /* ~usb_fmask */
499 } fs_sun;
500 struct {
501 __fs32 fs_sparecon[53];/* reserved for future constants */
502 __fs32 fs_reclaim;
503 __fs32 fs_sparecon2[1];
504 __fs32 fs_npsect; /* # sectors/track including spares */
505 __fs32 fs_qbmask[2]; /* ~usb_bmask */
506 __fs32 fs_qfmask[2]; /* ~usb_fmask */
507 } fs_sunx86;
508 struct {
509 __fs32 fs_sparecon[50];/* reserved for future constants */
510 __fs32 fs_contigsumsize;/* size of cluster summary array */
511 __fs32 fs_maxsymlinklen;/* max length of an internal symlink */
512 __fs32 fs_inodefmt; /* format of on-disk inodes */
513 __fs32 fs_maxfilesize[2]; /* max representable file size */
514 __fs32 fs_qbmask[2]; /* ~usb_bmask */
515 __fs32 fs_qfmask[2]; /* ~usb_fmask */
516 __fs32 fs_state; /* file system state time stamp */
517 } fs_44;
518 } fs_u2;
519 __fs32 fs_postblformat; /* format of positional layout tables */
520 __fs32 fs_nrpos; /* number of rotational positions */
521 __fs32 fs_postbloff; /* (__s16) rotation block list head */
522 __fs32 fs_rotbloff; /* (__u8) blocks for each rotation */
523 __fs32 fs_magic; /* magic number */
524 __u8 fs_space[1]; /* list of blocks for each rotation */
525 };
526 #endif/*struct ufs_super_block*/
527
528 /*
529 * Preference for optimization.
530 */
531 #define UFS_OPTTIME 0 /* minimize allocation time */
532 #define UFS_OPTSPACE 1 /* minimize disk fragmentation */
533
534 /*
535 * Rotational layout table format types
536 */
537 #define UFS_42POSTBLFMT -1 /* 4.2BSD rotational table format */
538 #define UFS_DYNAMICPOSTBLFMT 1 /* dynamic rotational table format */
539
540 /*
541 * Convert cylinder group to base address of its global summary info.
542 */
543 #define fs_cs(indx) s_csp[(indx)]
544
545 /*
546 * Cylinder group block for a file system.
547 *
548 * Writable fields in the cylinder group are protected by the associated
549 * super block lock fs->fs_lock.
550 */
551 #define CG_MAGIC 0x090255
552 #define ufs_cg_chkmagic(sb, ucg) \
553 (fs32_to_cpu((sb), (ucg)->cg_magic) == CG_MAGIC)
554
555 /*
556 * size of this structure is 172 B
557 */
558 struct ufs_cylinder_group {
559 __fs32 cg_link; /* linked list of cyl groups */
560 __fs32 cg_magic; /* magic number */
561 __fs32 cg_time; /* time last written */
562 __fs32 cg_cgx; /* we are the cgx'th cylinder group */
563 __fs16 cg_ncyl; /* number of cyl's this cg */
564 __fs16 cg_niblk; /* number of inode blocks this cg */
565 __fs32 cg_ndblk; /* number of data blocks this cg */
566 struct ufs_csum cg_cs; /* cylinder summary information */
567 __fs32 cg_rotor; /* position of last used block */
568 __fs32 cg_frotor; /* position of last used frag */
569 __fs32 cg_irotor; /* position of last used inode */
570 __fs32 cg_frsum[UFS_MAXFRAG]; /* counts of available frags */
571 __fs32 cg_btotoff; /* (__u32) block totals per cylinder */
572 __fs32 cg_boff; /* (short) free block positions */
573 __fs32 cg_iusedoff; /* (char) used inode map */
574 __fs32 cg_freeoff; /* (u_char) free block map */
575 __fs32 cg_nextfreeoff; /* (u_char) next available space */
576 union {
577 struct {
578 __fs32 cg_clustersumoff; /* (u_int32) counts of avail clusters */
579 __fs32 cg_clusteroff; /* (u_int8) free cluster map */
580 __fs32 cg_nclusterblks; /* number of clusters this cg */
581 __fs32 cg_sparecon[13]; /* reserved for future use */
582 } cg_44;
583 struct {
584 __fs32 cg_clustersumoff;/* (u_int32) counts of avail clusters */
585 __fs32 cg_clusteroff; /* (u_int8) free cluster map */
586 __fs32 cg_nclusterblks;/* number of clusters this cg */
587 __fs32 cg_niblk; /* number of inode blocks this cg */
588 __fs32 cg_initediblk; /* last initialized inode */
589 __fs32 cg_sparecon32[3];/* reserved for future use */
590 __fs64 cg_time; /* time last written */
591 __fs64 cg_sparecon[3]; /* reserved for future use */
592 } cg_u2;
593 __fs32 cg_sparecon[16]; /* reserved for future use */
594 } cg_u;
595 __u8 cg_space[1]; /* space for cylinder group maps */
596 /* actually longer */
597 };
598
599 /*
600 * structure of an on-disk inode
601 */
602 struct ufs_inode {
603 __fs16 ui_mode; /* 0x0 */
604 __fs16 ui_nlink; /* 0x2 */
605 union {
606 struct {
607 __fs16 ui_suid; /* 0x4 */
608 __fs16 ui_sgid; /* 0x6 */
609 } oldids;
610 __fs32 ui_inumber; /* 0x4 lsf: inode number */
611 __fs32 ui_author; /* 0x4 GNU HURD: author */
612 } ui_u1;
613 __fs64 ui_size; /* 0x8 */
614 struct ufs_timeval ui_atime; /* 0x10 access */
615 struct ufs_timeval ui_mtime; /* 0x18 modification */
616 struct ufs_timeval ui_ctime; /* 0x20 creation */
617 union {
618 struct {
619 __fs32 ui_db[UFS_NDADDR];/* 0x28 data blocks */
620 __fs32 ui_ib[UFS_NINDIR];/* 0x58 indirect blocks */
621 } ui_addr;
622 __u8 ui_symlink[4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */
623 } ui_u2;
624 __fs32 ui_flags; /* 0x64 immutable, append-only... */
625 __fs32 ui_blocks; /* 0x68 blocks in use */
626 __fs32 ui_gen; /* 0x6c like ext2 i_version, for NFS support */
627 union {
628 struct {
629 __fs32 ui_shadow; /* 0x70 shadow inode with security data */
630 __fs32 ui_uid; /* 0x74 long EFT version of uid */
631 __fs32 ui_gid; /* 0x78 long EFT version of gid */
632 __fs32 ui_oeftflag; /* 0x7c reserved */
633 } ui_sun;
634 struct {
635 __fs32 ui_uid; /* 0x70 File owner */
636 __fs32 ui_gid; /* 0x74 File group */
637 __fs32 ui_spare[2]; /* 0x78 reserved */
638 } ui_44;
639 struct {
640 __fs32 ui_uid; /* 0x70 */
641 __fs32 ui_gid; /* 0x74 */
642 __fs16 ui_modeh; /* 0x78 mode high bits */
643 __fs16 ui_spare; /* 0x7A unused */
644 __fs32 ui_trans; /* 0x7c filesystem translator */
645 } ui_hurd;
646 } ui_u3;
647 };
648
649 #define UFS_NXADDR 2 /* External addresses in inode. */
650 struct ufs2_inode {
651 __fs16 ui_mode; /* 0: IFMT, permissions; see below. */
652 __fs16 ui_nlink; /* 2: File link count. */
653 __fs32 ui_uid; /* 4: File owner. */
654 __fs32 ui_gid; /* 8: File group. */
655 __fs32 ui_blksize; /* 12: Inode blocksize. */
656 __fs64 ui_size; /* 16: File byte count. */
657 __fs64 ui_blocks; /* 24: Bytes actually held. */
658 struct ufs_timeval ui_atime; /* 32: Last access time. */
659 struct ufs_timeval ui_mtime; /* 40: Last modified time. */
660 struct ufs_timeval ui_ctime; /* 48: Last inode change time. */
661 struct ufs_timeval ui_birthtime; /* 56: Inode creation time. */
662 __fs32 ui_mtimensec; /* 64: Last modified time. */
663 __fs32 ui_atimensec; /* 68: Last access time. */
664 __fs32 ui_ctimensec; /* 72: Last inode change time. */
665 __fs32 ui_birthnsec; /* 76: Inode creation time. */
666 __fs32 ui_gen; /* 80: Generation number. */
667 __fs32 ui_kernflags; /* 84: Kernel flags. */
668 __fs32 ui_flags; /* 88: Status flags (chflags). */
669 __fs32 ui_extsize; /* 92: External attributes block. */
670 __fs64 ui_extb[UFS_NXADDR];/* 96: External attributes block. */
671 union {
672 struct {
673 __fs64 ui_db[UFS_NDADDR]; /* 112: Direct disk blocks. */
674 __fs64 ui_ib[UFS_NINDIR];/* 208: Indirect disk blocks.*/
675 } ui_addr;
676 __u8 ui_symlink[2*4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */
677 } ui_u2;
678 __fs64 ui_spare[3]; /* 232: Reserved; currently unused */
679 };
680
681
682 /* FreeBSD has these in sys/stat.h */
683 /* ui_flags that can be set by a file owner */
684 #define UFS_UF_SETTABLE 0x0000ffff
685 #define UFS_UF_NODUMP 0x00000001 /* do not dump */
686 #define UFS_UF_IMMUTABLE 0x00000002 /* immutable (can't "change") */
687 #define UFS_UF_APPEND 0x00000004 /* append-only */
688 #define UFS_UF_OPAQUE 0x00000008 /* directory is opaque (unionfs) */
689 #define UFS_UF_NOUNLINK 0x00000010 /* can't be removed or renamed */
690 /* ui_flags that only root can set */
691 #define UFS_SF_SETTABLE 0xffff0000
692 #define UFS_SF_ARCHIVED 0x00010000 /* archived */
693 #define UFS_SF_IMMUTABLE 0x00020000 /* immutable (can't "change") */
694 #define UFS_SF_APPEND 0x00040000 /* append-only */
695 #define UFS_SF_NOUNLINK 0x00100000 /* can't be removed or renamed */
696
697 /*
698 * This structure is used for reading disk structures larger
699 * than the size of fragment.
700 */
701 struct ufs_buffer_head {
702 __u64 fragment; /* first fragment */
703 __u64 count; /* number of fragments */
704 struct buffer_head * bh[UFS_MAXFRAG]; /* buffers */
705 };
706
707 struct ufs_cg_private_info {
708 struct ufs_buffer_head c_ubh;
709 __u32 c_cgx; /* number of cylidner group */
710 __u16 c_ncyl; /* number of cyl's this cg */
711 __u16 c_niblk; /* number of inode blocks this cg */
712 __u32 c_ndblk; /* number of data blocks this cg */
713 __u32 c_rotor; /* position of last used block */
714 __u32 c_frotor; /* position of last used frag */
715 __u32 c_irotor; /* position of last used inode */
716 __u32 c_btotoff; /* (__u32) block totals per cylinder */
717 __u32 c_boff; /* (short) free block positions */
718 __u32 c_iusedoff; /* (char) used inode map */
719 __u32 c_freeoff; /* (u_char) free block map */
720 __u32 c_nextfreeoff; /* (u_char) next available space */
721 __u32 c_clustersumoff;/* (u_int32) counts of avail clusters */
722 __u32 c_clusteroff; /* (u_int8) free cluster map */
723 __u32 c_nclusterblks; /* number of clusters this cg */
724 };
725
726 struct ufs_sb_private_info {
727 struct ufs_buffer_head s_ubh; /* buffer containing super block */
728 struct ufs_csum_core cs_total;
729 __u32 s_sblkno; /* offset of super-blocks in filesys */
730 __u32 s_cblkno; /* offset of cg-block in filesys */
731 __u32 s_iblkno; /* offset of inode-blocks in filesys */
732 __u32 s_dblkno; /* offset of first data after cg */
733 __u32 s_cgoffset; /* cylinder group offset in cylinder */
734 __u32 s_cgmask; /* used to calc mod fs_ntrak */
735 __u32 s_size; /* number of blocks (fragments) in fs */
736 __u32 s_dsize; /* number of data blocks in fs */
737 __u64 s_u2_size; /* ufs2: number of blocks (fragments) in fs */
738 __u64 s_u2_dsize; /*ufs2: 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 __u32 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 };
796
797 /*
798 * Sizes of this structures are:
799 * ufs_super_block_first 512
800 * ufs_super_block_second 512
801 * ufs_super_block_third 356
802 */
803 struct ufs_super_block_first {
804 __fs32 fs_link;
805 __fs32 fs_rlink;
806 __fs32 fs_sblkno;
807 __fs32 fs_cblkno;
808 __fs32 fs_iblkno;
809 __fs32 fs_dblkno;
810 __fs32 fs_cgoffset;
811 __fs32 fs_cgmask;
812 __fs32 fs_time;
813 __fs32 fs_size;
814 __fs32 fs_dsize;
815 __fs32 fs_ncg;
816 __fs32 fs_bsize;
817 __fs32 fs_fsize;
818 __fs32 fs_frag;
819 __fs32 fs_minfree;
820 __fs32 fs_rotdelay;
821 __fs32 fs_rps;
822 __fs32 fs_bmask;
823 __fs32 fs_fmask;
824 __fs32 fs_bshift;
825 __fs32 fs_fshift;
826 __fs32 fs_maxcontig;
827 __fs32 fs_maxbpg;
828 __fs32 fs_fragshift;
829 __fs32 fs_fsbtodb;
830 __fs32 fs_sbsize;
831 __fs32 fs_csmask;
832 __fs32 fs_csshift;
833 __fs32 fs_nindir;
834 __fs32 fs_inopb;
835 __fs32 fs_nspf;
836 __fs32 fs_optim;
837 union {
838 struct {
839 __fs32 fs_npsect;
840 } fs_sun;
841 struct {
842 __fs32 fs_state;
843 } fs_sunx86;
844 } fs_u1;
845 __fs32 fs_interleave;
846 __fs32 fs_trackskew;
847 __fs32 fs_id[2];
848 __fs32 fs_csaddr;
849 __fs32 fs_cssize;
850 __fs32 fs_cgsize;
851 __fs32 fs_ntrak;
852 __fs32 fs_nsect;
853 __fs32 fs_spc;
854 __fs32 fs_ncyl;
855 __fs32 fs_cpg;
856 __fs32 fs_ipg;
857 __fs32 fs_fpg;
858 struct ufs_csum fs_cstotal;
859 __s8 fs_fmod;
860 __s8 fs_clean;
861 __s8 fs_ronly;
862 __s8 fs_flags;
863 __s8 fs_fsmnt[UFS_MAXMNTLEN - 212];
864
865 };
866
867 struct ufs_super_block_second {
868 union {
869 struct {
870 __s8 fs_fsmnt[212];
871 __fs32 fs_cgrotor;
872 __fs32 fs_csp[UFS_MAXCSBUFS];
873 __fs32 fs_maxcluster;
874 __fs32 fs_cpc;
875 __fs16 fs_opostbl[82];
876 } fs_u1;
877 struct {
878 __s8 fs_fsmnt[UFS2_MAXMNTLEN - UFS_MAXMNTLEN + 212];
879 __u8 fs_volname[UFS2_MAXVOLLEN];
880 __fs64 fs_swuid;
881 __fs32 fs_pad;
882 __fs32 fs_cgrotor;
883 __fs32 fs_ocsp[UFS2_NOCSPTRS];
884 __fs32 fs_contigdirs;
885 __fs32 fs_csp;
886 __fs32 fs_maxcluster;
887 __fs32 fs_active;
888 __fs32 fs_old_cpc;
889 __fs32 fs_maxbsize;
890 __fs64 fs_sparecon64[17];
891 __fs64 fs_sblockloc;
892 __fs64 cs_ndir;
893 __fs64 cs_nbfree;
894 } fs_u2;
895 } fs_un;
896 };
897
898 struct ufs_super_block_third {
899 union {
900 struct {
901 __fs16 fs_opostbl[46];
902 } fs_u1;
903 struct {
904 __fs64 cs_nifree; /* number of free inodes */
905 __fs64 cs_nffree; /* number of free frags */
906 __fs64 cs_numclusters; /* number of free clusters */
907 __fs64 cs_spare[3]; /* future expansion */
908 struct ufs_timeval fs_time; /* last time written */
909 __fs64 fs_size; /* number of blocks in fs */
910 __fs64 fs_dsize; /* number of data blocks in fs */
911 __fs64 fs_csaddr; /* blk addr of cyl grp summary area */
912 __fs64 fs_pendingblocks;/* blocks in process of being freed */
913 __fs32 fs_pendinginodes;/*inodes in process of being freed */
914 } __attribute__ ((packed)) fs_u2;
915 } fs_un1;
916 union {
917 struct {
918 __fs32 fs_sparecon[53];/* reserved for future constants */
919 __fs32 fs_reclaim;
920 __fs32 fs_sparecon2[1];
921 __fs32 fs_state; /* file system state time stamp */
922 __fs32 fs_qbmask[2]; /* ~usb_bmask */
923 __fs32 fs_qfmask[2]; /* ~usb_fmask */
924 } fs_sun;
925 struct {
926 __fs32 fs_sparecon[53];/* reserved for future constants */
927 __fs32 fs_reclaim;
928 __fs32 fs_sparecon2[1];
929 __fs32 fs_npsect; /* # sectors/track including spares */
930 __fs32 fs_qbmask[2]; /* ~usb_bmask */
931 __fs32 fs_qfmask[2]; /* ~usb_fmask */
932 } fs_sunx86;
933 struct {
934 __fs32 fs_sparecon[50];/* reserved for future constants */
935 __fs32 fs_contigsumsize;/* size of cluster summary array */
936 __fs32 fs_maxsymlinklen;/* max length of an internal symlink */
937 __fs32 fs_inodefmt; /* format of on-disk inodes */
938 __fs32 fs_maxfilesize[2]; /* max representable file size */
939 __fs32 fs_qbmask[2]; /* ~usb_bmask */
940 __fs32 fs_qfmask[2]; /* ~usb_fmask */
941 __fs32 fs_state; /* file system state time stamp */
942 } fs_44;
943 } fs_un2;
944 __fs32 fs_postblformat;
945 __fs32 fs_nrpos;
946 __fs32 fs_postbloff;
947 __fs32 fs_rotbloff;
948 __fs32 fs_magic;
949 __u8 fs_space[1];
950 };
951
952 #ifdef __KERNEL__
953
954 /* balloc.c */
955 extern void ufs_free_fragments (struct inode *, unsigned, unsigned);
956 extern void ufs_free_blocks (struct inode *, unsigned, unsigned);
957 extern unsigned ufs_new_fragments(struct inode *, __fs32 *, unsigned, unsigned,
958 unsigned, int *, struct page *);
959
960 /* cylinder.c */
961 extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
962 extern void ufs_put_cylinder (struct super_block *, unsigned);
963
964 /* dir.c */
965 extern struct inode_operations ufs_dir_inode_operations;
966 extern int ufs_add_link (struct dentry *, struct inode *);
967 extern ino_t ufs_inode_by_name(struct inode *, struct dentry *);
968 extern int ufs_make_empty(struct inode *, struct inode *);
969 extern struct ufs_dir_entry *ufs_find_entry(struct inode *, struct dentry *, struct page **);
970 extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
971 extern int ufs_empty_dir (struct inode *);
972 extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
973 extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
974 struct page *page, struct inode *inode);
975
976 /* file.c */
977 extern struct inode_operations ufs_file_inode_operations;
978 extern const struct file_operations ufs_file_operations;
979
980 extern const struct address_space_operations ufs_aops;
981
982 /* ialloc.c */
983 extern void ufs_free_inode (struct inode *inode);
984 extern struct inode * ufs_new_inode (struct inode *, int);
985
986 /* inode.c */
987 extern void ufs_read_inode (struct inode *);
988 extern void ufs_put_inode (struct inode *);
989 extern int ufs_write_inode (struct inode *, int);
990 extern int ufs_sync_inode (struct inode *);
991 extern void ufs_delete_inode (struct inode *);
992 extern struct buffer_head * ufs_bread (struct inode *, unsigned, int, int *);
993 extern int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create);
994
995 /* namei.c */
996 extern const struct file_operations ufs_dir_operations;
997
998 /* super.c */
999 extern void ufs_warning (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
1000 extern void ufs_error (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
1001 extern void ufs_panic (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
1002
1003 /* symlink.c */
1004 extern struct inode_operations ufs_fast_symlink_inode_operations;
1005
1006 /* truncate.c */
1007 extern int ufs_truncate (struct inode *, loff_t);
1008
1009 static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
1010 {
1011 return sb->s_fs_info;
1012 }
1013
1014 static inline struct ufs_inode_info *UFS_I(struct inode *inode)
1015 {
1016 return container_of(inode, struct ufs_inode_info, vfs_inode);
1017 }
1018
1019 #endif /* __KERNEL__ */
1020
1021 #endif /* __LINUX_UFS_FS_H */