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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
38#ifndef __KERNEL__
39typedef __u64 __fs64;
40typedef __u32 __fs32;
41typedef __u16 __fs16;
42#else
43typedef __u64 __bitwise __fs64;
44typedef __u32 __bitwise __fs32;
45typedef __u16 __bitwise __fs16;
46#endif
47
48#include <linux/ufs_fs_i.h>
49#include <linux/ufs_fs_sb.h>
50
51#define UFS_BBLOCK 0
52#define UFS_BBSIZE 8192
53#define UFS_SBLOCK 8192
54#define UFS_SBSIZE 8192
55
56#define UFS_SECTOR_SIZE 512
57#define UFS_SECTOR_BITS 9
58#define UFS_MAGIC 0x00011954
59#define UFS2_MAGIC 0x19540119
60#define UFS_CIGAM 0x54190100 /* byteswapped MAGIC */
61
62/* Copied from FreeBSD */
63/*
64 * Each disk drive contains some number of filesystems.
65 * A filesystem consists of a number of cylinder groups.
66 * Each cylinder group has inodes and data.
67 *
68 * A filesystem is described by its super-block, which in turn
69 * describes the cylinder groups. The super-block is critical
70 * data and is replicated in each cylinder group to protect against
71 * catastrophic loss. This is done at `newfs' time and the critical
72 * super-block data does not change, so the copies need not be
73 * referenced further unless disaster strikes.
74 *
75 * For filesystem fs, the offsets of the various blocks of interest
76 * are given in the super block as:
77 * [fs->fs_sblkno] Super-block
78 * [fs->fs_cblkno] Cylinder group block
79 * [fs->fs_iblkno] Inode blocks
80 * [fs->fs_dblkno] Data blocks
81 * The beginning of cylinder group cg in fs, is given by
82 * the ``cgbase(fs, cg)'' macro.
83 *
84 * Depending on the architecture and the media, the superblock may
85 * reside in any one of four places. For tiny media where every block
86 * counts, it is placed at the very front of the partition. Historically,
87 * UFS1 placed it 8K from the front to leave room for the disk label and
88 * a small bootstrap. For UFS2 it got moved to 64K from the front to leave
89 * room for the disk label and a bigger bootstrap, and for really piggy
90 * systems we check at 256K from the front if the first three fail. In
91 * all cases the size of the superblock will be SBLOCKSIZE. All values are
92 * given in byte-offset form, so they do not imply a sector size. The
93 * SBLOCKSEARCH specifies the order in which the locations should be searched.
94 */
95#define SBLOCK_FLOPPY 0
96#define SBLOCK_UFS1 8192
97#define SBLOCK_UFS2 65536
98#define SBLOCK_PIGGY 262144
99#define SBLOCKSIZE 8192
100#define SBLOCKSEARCH \
101 { SBLOCK_UFS2, SBLOCK_UFS1, SBLOCK_FLOPPY, SBLOCK_PIGGY, -1 }
102
103
104/* HP specific MAGIC values */
105
106#define UFS_MAGIC_LFN 0x00095014 /* fs supports filenames > 14 chars */
107#define UFS_CIGAM_LFN 0x14500900 /* srahc 41 < semanelif stroppus sf */
108
109#define UFS_MAGIC_SEC 0x00612195 /* B1 security fs */
110#define UFS_CIGAM_SEC 0x95216100
111
112#define UFS_MAGIC_FEA 0x00195612 /* fs_featurebits supported */
113#define UFS_CIGAM_FEA 0x12561900
114
115#define UFS_MAGIC_4GB 0x05231994 /* fs > 4 GB && fs_featurebits */
116#define UFS_CIGAM_4GB 0x94192305
117
118/* Seems somebody at HP goofed here. B1 and lfs are both 0x2 !?! */
119#define UFS_FSF_LFN 0x00000001 /* long file names */
120#define UFS_FSF_B1 0x00000002 /* B1 security */
121#define UFS_FSF_LFS 0x00000002 /* large files */
122#define UFS_FSF_LUID 0x00000004 /* large UIDs */
123
124/* End of HP stuff */
125
126
127#define UFS_BSIZE 8192
128#define UFS_MINBSIZE 4096
129#define UFS_FSIZE 1024
130#define UFS_MAXFRAG (UFS_BSIZE / UFS_FSIZE)
131
132#define UFS_NDADDR 12
133#define UFS_NINDIR 3
134
135#define UFS_IND_BLOCK (UFS_NDADDR + 0)
136#define UFS_DIND_BLOCK (UFS_NDADDR + 1)
137#define UFS_TIND_BLOCK (UFS_NDADDR + 2)
138
139#define UFS_NDIR_FRAGMENT (UFS_NDADDR << uspi->s_fpbshift)
140#define UFS_IND_FRAGMENT (UFS_IND_BLOCK << uspi->s_fpbshift)
141#define UFS_DIND_FRAGMENT (UFS_DIND_BLOCK << uspi->s_fpbshift)
142#define UFS_TIND_FRAGMENT (UFS_TIND_BLOCK << uspi->s_fpbshift)
143
144#define UFS_ROOTINO 2
145#define UFS_FIRST_INO (UFS_ROOTINO + 1)
146
147#define UFS_USEEFT ((__u16)65535)
148
149#define UFS_FSOK 0x7c269d38
Andreas Schwab9d923a02006-02-03 03:04:12 -0800150#define UFS_FSACTIVE ((__s8)0x00)
151#define UFS_FSCLEAN ((__s8)0x01)
152#define UFS_FSSTABLE ((__s8)0x02)
153#define UFS_FSOSF1 ((__s8)0x03) /* is this correct for DEC OSF/1? */
154#define UFS_FSBAD ((__s8)0xff)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155
156/* From here to next blank line, s_flags for ufs_sb_info */
157/* directory entry encoding */
158#define UFS_DE_MASK 0x00000010 /* mask for the following */
159#define UFS_DE_OLD 0x00000000
160#define UFS_DE_44BSD 0x00000010
161/* uid encoding */
162#define UFS_UID_MASK 0x00000060 /* mask for the following */
163#define UFS_UID_OLD 0x00000000
164#define UFS_UID_44BSD 0x00000020
165#define UFS_UID_EFT 0x00000040
166/* superblock state encoding */
167#define UFS_ST_MASK 0x00000700 /* mask for the following */
168#define UFS_ST_OLD 0x00000000
169#define UFS_ST_44BSD 0x00000100
170#define UFS_ST_SUN 0x00000200
171#define UFS_ST_SUNx86 0x00000400
172/*cylinder group encoding */
173#define UFS_CG_MASK 0x00003000 /* mask for the following */
174#define UFS_CG_OLD 0x00000000
175#define UFS_CG_44BSD 0x00002000
176#define UFS_CG_SUN 0x00001000
177/* filesystem type encoding */
178#define UFS_TYPE_MASK 0x00010000 /* mask for the following */
179#define UFS_TYPE_UFS1 0x00000000
180#define UFS_TYPE_UFS2 0x00010000
181
182
183/* fs_inodefmt options */
184#define UFS_42INODEFMT -1
185#define UFS_44INODEFMT 2
186
187/* mount options */
188#define UFS_MOUNT_ONERROR 0x0000000F
189#define UFS_MOUNT_ONERROR_PANIC 0x00000001
190#define UFS_MOUNT_ONERROR_LOCK 0x00000002
191#define UFS_MOUNT_ONERROR_UMOUNT 0x00000004
192#define UFS_MOUNT_ONERROR_REPAIR 0x00000008
193
194#define UFS_MOUNT_UFSTYPE 0x0000FFF0
195#define UFS_MOUNT_UFSTYPE_OLD 0x00000010
196#define UFS_MOUNT_UFSTYPE_44BSD 0x00000020
197#define UFS_MOUNT_UFSTYPE_SUN 0x00000040
198#define UFS_MOUNT_UFSTYPE_NEXTSTEP 0x00000080
199#define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD 0x00000100
200#define UFS_MOUNT_UFSTYPE_OPENSTEP 0x00000200
201#define UFS_MOUNT_UFSTYPE_SUNx86 0x00000400
202#define UFS_MOUNT_UFSTYPE_HP 0x00000800
203#define UFS_MOUNT_UFSTYPE_UFS2 0x00001000
204
205#define ufs_clear_opt(o,opt) o &= ~UFS_MOUNT_##opt
206#define ufs_set_opt(o,opt) o |= UFS_MOUNT_##opt
207#define ufs_test_opt(o,opt) ((o) & UFS_MOUNT_##opt)
208
209/*
210 * MINFREE gives the minimum acceptable percentage of file system
211 * blocks which may be free. If the freelist drops below this level
212 * only the superuser may continue to allocate blocks. This may
213 * be set to 0 if no reserve of free blocks is deemed necessary,
214 * however throughput drops by fifty percent if the file system
215 * is run at between 95% and 100% full; thus the minimum default
216 * value of fs_minfree is 5%. However, to get good clustering
217 * performance, 10% is a better choice. hence we use 10% as our
218 * default value. With 10% free space, fragmentation is not a
219 * problem, so we choose to optimize for time.
220 */
221#define UFS_MINFREE 5
222#define UFS_DEFAULTOPT UFS_OPTTIME
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -0700223
224/*
225 * Debug code
226 */
227#ifdef CONFIG_UFS_DEBUG
228# define UFSD(f, a...) { \
229 printk ("UFSD (%s, %d): %s:", \
230 __FILE__, __LINE__, __FUNCTION__); \
231 printk (f, ## a); \
232 }
233#else
234# define UFSD(f, a...) /**/
235#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236
237/*
238 * Turn file system block numbers into disk block addresses.
239 * This maps file system blocks to device size blocks.
240 */
241#define ufs_fsbtodb(uspi, b) ((b) << (uspi)->s_fsbtodb)
242#define ufs_dbtofsb(uspi, b) ((b) >> (uspi)->s_fsbtodb)
243
244/*
245 * Cylinder group macros to locate things in cylinder groups.
246 * They calc file system addresses of cylinder group data structures.
247 */
248#define ufs_cgbase(c) (uspi->s_fpg * (c))
249#define ufs_cgstart(c) ((uspi)->fs_magic == UFS2_MAGIC ? ufs_cgbase(c) : \
250 (ufs_cgbase(c) + uspi->s_cgoffset * ((c) & ~uspi->s_cgmask)))
251#define ufs_cgsblock(c) (ufs_cgstart(c) + uspi->s_sblkno) /* super blk */
252#define ufs_cgcmin(c) (ufs_cgstart(c) + uspi->s_cblkno) /* cg block */
253#define ufs_cgimin(c) (ufs_cgstart(c) + uspi->s_iblkno) /* inode blk */
254#define ufs_cgdmin(c) (ufs_cgstart(c) + uspi->s_dblkno) /* 1st data */
255
256/*
257 * Macros for handling inode numbers:
258 * inode number to file system block offset.
259 * inode number to cylinder group number.
260 * inode number to file system block address.
261 */
262#define ufs_inotocg(x) ((x) / uspi->s_ipg)
263#define ufs_inotocgoff(x) ((x) % uspi->s_ipg)
264#define ufs_inotofsba(x) (ufs_cgimin(ufs_inotocg(x)) + ufs_inotocgoff(x) / uspi->s_inopf)
265#define ufs_inotofsbo(x) ((x) % uspi->s_inopf)
266
267/*
268 * Give cylinder group number for a file system block.
269 * Give cylinder group block number for a file system block.
270 */
271#define ufs_dtog(d) ((d) / uspi->s_fpg)
272#define ufs_dtogd(d) ((d) % uspi->s_fpg)
273
274/*
275 * Compute the cylinder and rotational position of a cyl block addr.
276 */
277#define ufs_cbtocylno(bno) \
278 ((bno) * uspi->s_nspf / uspi->s_spc)
279#define ufs_cbtorpos(bno) \
280 ((((bno) * uspi->s_nspf % uspi->s_spc / uspi->s_nsect \
281 * uspi->s_trackskew + (bno) * uspi->s_nspf % uspi->s_spc \
282 % uspi->s_nsect * uspi->s_interleave) % uspi->s_nsect \
283 * uspi->s_nrpos) / uspi->s_npsect)
284
285/*
286 * The following macros optimize certain frequently calculated
287 * quantities by using shifts and masks in place of divisions
288 * modulos and multiplications.
289 */
290#define ufs_blkoff(loc) ((loc) & uspi->s_qbmask)
291#define ufs_fragoff(loc) ((loc) & uspi->s_qfmask)
292#define ufs_lblktosize(blk) ((blk) << uspi->s_bshift)
293#define ufs_lblkno(loc) ((loc) >> uspi->s_bshift)
294#define ufs_numfrags(loc) ((loc) >> uspi->s_fshift)
295#define ufs_blkroundup(size) (((size) + uspi->s_qbmask) & uspi->s_bmask)
296#define ufs_fragroundup(size) (((size) + uspi->s_qfmask) & uspi->s_fmask)
297#define ufs_fragstoblks(frags) ((frags) >> uspi->s_fpbshift)
298#define ufs_blkstofrags(blks) ((blks) << uspi->s_fpbshift)
299#define ufs_fragnum(fsb) ((fsb) & uspi->s_fpbmask)
300#define ufs_blknum(fsb) ((fsb) & ~uspi->s_fpbmask)
301
302#define UFS_MAXNAMLEN 255
303#define UFS_MAXMNTLEN 512
304#define UFS2_MAXMNTLEN 468
305#define UFS2_MAXVOLLEN 32
306/* #define UFS_MAXCSBUFS 31 */
307#define UFS_LINK_MAX 32000
308/*
309#define UFS2_NOCSPTRS ((128 / sizeof(void *)) - 4)
310*/
311#define UFS2_NOCSPTRS 28
312
313/*
314 * UFS_DIR_PAD defines the directory entries boundaries
315 * (must be a multiple of 4)
316 */
317#define UFS_DIR_PAD 4
318#define UFS_DIR_ROUND (UFS_DIR_PAD - 1)
319#define UFS_DIR_REC_LEN(name_len) (((name_len) + 1 + 8 + UFS_DIR_ROUND) & ~UFS_DIR_ROUND)
320
321struct ufs_timeval {
322 __fs32 tv_sec;
323 __fs32 tv_usec;
324};
325
326struct ufs_dir_entry {
327 __fs32 d_ino; /* inode number of this entry */
328 __fs16 d_reclen; /* length of this entry */
329 union {
330 __fs16 d_namlen; /* actual length of d_name */
331 struct {
332 __u8 d_type; /* file type */
333 __u8 d_namlen; /* length of string in d_name */
334 } d_44;
335 } d_u;
336 __u8 d_name[UFS_MAXNAMLEN + 1]; /* file name */
337};
338
339struct ufs_csum {
340 __fs32 cs_ndir; /* number of directories */
341 __fs32 cs_nbfree; /* number of free blocks */
342 __fs32 cs_nifree; /* number of free inodes */
343 __fs32 cs_nffree; /* number of free frags */
344};
345struct ufs2_csum_total {
346 __fs64 cs_ndir; /* number of directories */
347 __fs64 cs_nbfree; /* number of free blocks */
348 __fs64 cs_nifree; /* number of free inodes */
349 __fs64 cs_nffree; /* number of free frags */
350 __fs64 cs_numclusters; /* number of free clusters */
351 __fs64 cs_spare[3]; /* future expansion */
352};
353
Al Viro44aa5352006-08-13 01:54:30 -0400354struct ufs_csum_core {
355 __u64 cs_ndir; /* number of directories */
356 __u64 cs_nbfree; /* number of free blocks */
357 __u64 cs_nifree; /* number of free inodes */
358 __u64 cs_nffree; /* number of free frags */
359 __u64 cs_numclusters; /* number of free clusters */
360};
361
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -0700362/*
363 * File system flags
364 */
365#define UFS_UNCLEAN 0x01 /* file system not clean at mount (unused) */
366#define UFS_DOSOFTDEP 0x02 /* file system using soft dependencies */
367#define UFS_NEEDSFSCK 0x04 /* needs sync fsck (FreeBSD compat, unused) */
368#define UFS_INDEXDIRS 0x08 /* kernel supports indexed directories */
369#define UFS_ACLS 0x10 /* file system has ACLs enabled */
370#define UFS_MULTILABEL 0x20 /* file system is MAC multi-label */
371#define UFS_FLAGS_UPDATED 0x80 /* flags have been moved to new location */
372
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700373#if 0
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374/*
375 * This is the actual superblock, as it is laid out on the disk.
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700376 * Do NOT use this structure, because of sizeof(ufs_super_block) > 512 and
377 * it may occupy several blocks, use
378 * struct ufs_super_block_(first,second,third) instead.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 */
380struct ufs_super_block {
381 __fs32 fs_link; /* UNUSED */
382 __fs32 fs_rlink; /* UNUSED */
383 __fs32 fs_sblkno; /* addr of super-block in filesys */
384 __fs32 fs_cblkno; /* offset of cyl-block in filesys */
385 __fs32 fs_iblkno; /* offset of inode-blocks in filesys */
386 __fs32 fs_dblkno; /* offset of first data after cg */
387 __fs32 fs_cgoffset; /* cylinder group offset in cylinder */
388 __fs32 fs_cgmask; /* used to calc mod fs_ntrak */
389 __fs32 fs_time; /* last time written -- time_t */
390 __fs32 fs_size; /* number of blocks in fs */
391 __fs32 fs_dsize; /* number of data blocks in fs */
392 __fs32 fs_ncg; /* number of cylinder groups */
393 __fs32 fs_bsize; /* size of basic blocks in fs */
394 __fs32 fs_fsize; /* size of frag blocks in fs */
395 __fs32 fs_frag; /* number of frags in a block in fs */
396/* these are configuration parameters */
397 __fs32 fs_minfree; /* minimum percentage of free blocks */
398 __fs32 fs_rotdelay; /* num of ms for optimal next block */
399 __fs32 fs_rps; /* disk revolutions per second */
400/* these fields can be computed from the others */
401 __fs32 fs_bmask; /* ``blkoff'' calc of blk offsets */
402 __fs32 fs_fmask; /* ``fragoff'' calc of frag offsets */
403 __fs32 fs_bshift; /* ``lblkno'' calc of logical blkno */
404 __fs32 fs_fshift; /* ``numfrags'' calc number of frags */
405/* these are configuration parameters */
406 __fs32 fs_maxcontig; /* max number of contiguous blks */
407 __fs32 fs_maxbpg; /* max number of blks per cyl group */
408/* these fields can be computed from the others */
409 __fs32 fs_fragshift; /* block to frag shift */
410 __fs32 fs_fsbtodb; /* fsbtodb and dbtofsb shift constant */
411 __fs32 fs_sbsize; /* actual size of super block */
412 __fs32 fs_csmask; /* csum block offset */
413 __fs32 fs_csshift; /* csum block number */
414 __fs32 fs_nindir; /* value of NINDIR */
415 __fs32 fs_inopb; /* value of INOPB */
416 __fs32 fs_nspf; /* value of NSPF */
417/* yet another configuration parameter */
418 __fs32 fs_optim; /* optimization preference, see below */
419/* these fields are derived from the hardware */
420 union {
421 struct {
422 __fs32 fs_npsect; /* # sectors/track including spares */
423 } fs_sun;
424 struct {
425 __fs32 fs_state; /* file system state time stamp */
426 } fs_sunx86;
427 } fs_u1;
428 __fs32 fs_interleave; /* hardware sector interleave */
429 __fs32 fs_trackskew; /* sector 0 skew, per track */
430/* a unique id for this filesystem (currently unused and unmaintained) */
431/* In 4.3 Tahoe this space is used by fs_headswitch and fs_trkseek */
432/* Neither of those fields is used in the Tahoe code right now but */
433/* there could be problems if they are. */
434 __fs32 fs_id[2]; /* file system id */
435/* sizes determined by number of cylinder groups and their sizes */
436 __fs32 fs_csaddr; /* blk addr of cyl grp summary area */
437 __fs32 fs_cssize; /* size of cyl grp summary area */
438 __fs32 fs_cgsize; /* cylinder group size */
439/* these fields are derived from the hardware */
440 __fs32 fs_ntrak; /* tracks per cylinder */
441 __fs32 fs_nsect; /* sectors per track */
442 __fs32 fs_spc; /* sectors per cylinder */
443/* this comes from the disk driver partitioning */
444 __fs32 fs_ncyl; /* cylinders in file system */
445/* these fields can be computed from the others */
446 __fs32 fs_cpg; /* cylinders per group */
447 __fs32 fs_ipg; /* inodes per cylinder group */
448 __fs32 fs_fpg; /* blocks per group * fs_frag */
449/* this data must be re-computed after crashes */
450 struct ufs_csum fs_cstotal; /* cylinder summary information */
451/* these fields are cleared at mount time */
452 __s8 fs_fmod; /* super block modified flag */
453 __s8 fs_clean; /* file system is clean flag */
454 __s8 fs_ronly; /* mounted read-only flag */
Evgeniy Dushistovee3ffd62006-06-25 05:47:30 -0700455 __s8 fs_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456 union {
457 struct {
458 __s8 fs_fsmnt[UFS_MAXMNTLEN];/* name mounted on */
459 __fs32 fs_cgrotor; /* last cg searched */
460 __fs32 fs_csp[UFS_MAXCSBUFS];/*list of fs_cs info buffers */
461 __fs32 fs_maxcluster;
462 __fs32 fs_cpc; /* cyl per cycle in postbl */
463 __fs16 fs_opostbl[16][8]; /* old rotation block list head */
464 } fs_u1;
465 struct {
466 __s8 fs_fsmnt[UFS2_MAXMNTLEN]; /* name mounted on */
467 __u8 fs_volname[UFS2_MAXVOLLEN]; /* volume name */
468 __fs64 fs_swuid; /* system-wide uid */
469 __fs32 fs_pad; /* due to alignment of fs_swuid */
470 __fs32 fs_cgrotor; /* last cg searched */
471 __fs32 fs_ocsp[UFS2_NOCSPTRS]; /*list of fs_cs info buffers */
472 __fs32 fs_contigdirs;/*# of contiguously allocated dirs */
473 __fs32 fs_csp; /* cg summary info buffer for fs_cs */
474 __fs32 fs_maxcluster;
475 __fs32 fs_active;/* used by snapshots to track fs */
476 __fs32 fs_old_cpc; /* cyl per cycle in postbl */
477 __fs32 fs_maxbsize;/*maximum blocking factor permitted */
478 __fs64 fs_sparecon64[17];/*old rotation block list head */
479 __fs64 fs_sblockloc; /* byte offset of standard superblock */
480 struct ufs2_csum_total fs_cstotal;/*cylinder summary information*/
481 struct ufs_timeval fs_time; /* last time written */
482 __fs64 fs_size; /* number of blocks in fs */
483 __fs64 fs_dsize; /* number of data blocks in fs */
484 __fs64 fs_csaddr; /* blk addr of cyl grp summary area */
485 __fs64 fs_pendingblocks;/* blocks in process of being freed */
486 __fs32 fs_pendinginodes;/*inodes in process of being freed */
487 } fs_u2;
488 } fs_u11;
489 union {
490 struct {
491 __fs32 fs_sparecon[53];/* reserved for future constants */
492 __fs32 fs_reclaim;
493 __fs32 fs_sparecon2[1];
494 __fs32 fs_state; /* file system state time stamp */
495 __fs32 fs_qbmask[2]; /* ~usb_bmask */
496 __fs32 fs_qfmask[2]; /* ~usb_fmask */
497 } fs_sun;
498 struct {
499 __fs32 fs_sparecon[53];/* reserved for future constants */
500 __fs32 fs_reclaim;
501 __fs32 fs_sparecon2[1];
502 __fs32 fs_npsect; /* # sectors/track including spares */
503 __fs32 fs_qbmask[2]; /* ~usb_bmask */
504 __fs32 fs_qfmask[2]; /* ~usb_fmask */
505 } fs_sunx86;
506 struct {
507 __fs32 fs_sparecon[50];/* reserved for future constants */
508 __fs32 fs_contigsumsize;/* size of cluster summary array */
509 __fs32 fs_maxsymlinklen;/* max length of an internal symlink */
510 __fs32 fs_inodefmt; /* format of on-disk inodes */
511 __fs32 fs_maxfilesize[2]; /* max representable file size */
512 __fs32 fs_qbmask[2]; /* ~usb_bmask */
513 __fs32 fs_qfmask[2]; /* ~usb_fmask */
514 __fs32 fs_state; /* file system state time stamp */
515 } fs_44;
516 } fs_u2;
517 __fs32 fs_postblformat; /* format of positional layout tables */
518 __fs32 fs_nrpos; /* number of rotational positions */
519 __fs32 fs_postbloff; /* (__s16) rotation block list head */
520 __fs32 fs_rotbloff; /* (__u8) blocks for each rotation */
521 __fs32 fs_magic; /* magic number */
522 __u8 fs_space[1]; /* list of blocks for each rotation */
523};
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700524#endif/*struct ufs_super_block*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525
526/*
527 * Preference for optimization.
528 */
529#define UFS_OPTTIME 0 /* minimize allocation time */
530#define UFS_OPTSPACE 1 /* minimize disk fragmentation */
531
532/*
533 * Rotational layout table format types
534 */
535#define UFS_42POSTBLFMT -1 /* 4.2BSD rotational table format */
536#define UFS_DYNAMICPOSTBLFMT 1 /* dynamic rotational table format */
537
538/*
539 * Convert cylinder group to base address of its global summary info.
540 */
Evgeniy Dushistove295cfc2006-02-03 03:04:04 -0800541#define fs_cs(indx) s_csp[(indx)]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542
543/*
544 * Cylinder group block for a file system.
545 *
546 * Writable fields in the cylinder group are protected by the associated
547 * super block lock fs->fs_lock.
548 */
549#define CG_MAGIC 0x090255
550#define ufs_cg_chkmagic(sb, ucg) \
551 (fs32_to_cpu((sb), (ucg)->cg_magic) == CG_MAGIC)
552
553/*
554 * size of this structure is 172 B
555 */
556struct ufs_cylinder_group {
557 __fs32 cg_link; /* linked list of cyl groups */
558 __fs32 cg_magic; /* magic number */
559 __fs32 cg_time; /* time last written */
560 __fs32 cg_cgx; /* we are the cgx'th cylinder group */
561 __fs16 cg_ncyl; /* number of cyl's this cg */
562 __fs16 cg_niblk; /* number of inode blocks this cg */
563 __fs32 cg_ndblk; /* number of data blocks this cg */
564 struct ufs_csum cg_cs; /* cylinder summary information */
565 __fs32 cg_rotor; /* position of last used block */
566 __fs32 cg_frotor; /* position of last used frag */
567 __fs32 cg_irotor; /* position of last used inode */
568 __fs32 cg_frsum[UFS_MAXFRAG]; /* counts of available frags */
569 __fs32 cg_btotoff; /* (__u32) block totals per cylinder */
570 __fs32 cg_boff; /* (short) free block positions */
571 __fs32 cg_iusedoff; /* (char) used inode map */
572 __fs32 cg_freeoff; /* (u_char) free block map */
573 __fs32 cg_nextfreeoff; /* (u_char) next available space */
574 union {
575 struct {
576 __fs32 cg_clustersumoff; /* (u_int32) counts of avail clusters */
577 __fs32 cg_clusteroff; /* (u_int8) free cluster map */
578 __fs32 cg_nclusterblks; /* number of clusters this cg */
579 __fs32 cg_sparecon[13]; /* reserved for future use */
580 } cg_44;
581 struct {
582 __fs32 cg_clustersumoff;/* (u_int32) counts of avail clusters */
583 __fs32 cg_clusteroff; /* (u_int8) free cluster map */
584 __fs32 cg_nclusterblks;/* number of clusters this cg */
585 __fs32 cg_niblk; /* number of inode blocks this cg */
586 __fs32 cg_initediblk; /* last initialized inode */
587 __fs32 cg_sparecon32[3];/* reserved for future use */
588 __fs64 cg_time; /* time last written */
589 __fs64 cg_sparecon[3]; /* reserved for future use */
590 } cg_u2;
591 __fs32 cg_sparecon[16]; /* reserved for future use */
592 } cg_u;
593 __u8 cg_space[1]; /* space for cylinder group maps */
594/* actually longer */
595};
596
597/*
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. */
656 struct ufs_timeval ui_atime; /* 32: Last access time. */
657 struct ufs_timeval ui_mtime; /* 40: Last modified time. */
658 struct ufs_timeval ui_ctime; /* 48: Last inode change time. */
659 struct ufs_timeval ui_birthtime; /* 56: Inode creation time. */
660 __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 */
722};
723
724struct ufs_sb_private_info {
725 struct ufs_buffer_head s_ubh; /* buffer containing super block */
Al Viro44aa5352006-08-13 01:54:30 -0400726 struct ufs_csum_core cs_total;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727 __u32 s_sblkno; /* offset of super-blocks in filesys */
728 __u32 s_cblkno; /* offset of cg-block in filesys */
729 __u32 s_iblkno; /* offset of inode-blocks in filesys */
730 __u32 s_dblkno; /* offset of first data after cg */
731 __u32 s_cgoffset; /* cylinder group offset in cylinder */
732 __u32 s_cgmask; /* used to calc mod fs_ntrak */
733 __u32 s_size; /* number of blocks (fragments) in fs */
734 __u32 s_dsize; /* number of data blocks in fs */
735 __u64 s_u2_size; /* ufs2: number of blocks (fragments) in fs */
736 __u64 s_u2_dsize; /*ufs2: number of data blocks in fs */
737 __u32 s_ncg; /* number of cylinder groups */
738 __u32 s_bsize; /* size of basic blocks */
739 __u32 s_fsize; /* size of fragments */
740 __u32 s_fpb; /* fragments per block */
741 __u32 s_minfree; /* minimum percentage of free blocks */
742 __u32 s_bmask; /* `blkoff'' calc of blk offsets */
743 __u32 s_fmask; /* s_fsize mask */
744 __u32 s_bshift; /* `lblkno'' calc of logical blkno */
745 __u32 s_fshift; /* s_fsize shift */
746 __u32 s_fpbshift; /* fragments per block shift */
747 __u32 s_fsbtodb; /* fsbtodb and dbtofsb shift constant */
748 __u32 s_sbsize; /* actual size of super block */
749 __u32 s_csmask; /* csum block offset */
750 __u32 s_csshift; /* csum block number */
751 __u32 s_nindir; /* value of NINDIR */
752 __u32 s_inopb; /* value of INOPB */
753 __u32 s_nspf; /* value of NSPF */
754 __u32 s_npsect; /* # sectors/track including spares */
755 __u32 s_interleave; /* hardware sector interleave */
756 __u32 s_trackskew; /* sector 0 skew, per track */
757 __u32 s_csaddr; /* blk addr of cyl grp summary area */
758 __u32 s_cssize; /* size of cyl grp summary area */
759 __u32 s_cgsize; /* cylinder group size */
760 __u32 s_ntrak; /* tracks per cylinder */
761 __u32 s_nsect; /* sectors per track */
762 __u32 s_spc; /* sectors per cylinder */
763 __u32 s_ipg; /* inodes per cylinder group */
764 __u32 s_fpg; /* fragments per group */
765 __u32 s_cpc; /* cyl per cycle in postbl */
766 __s32 s_contigsumsize;/* size of cluster summary array, 44bsd */
767 __s64 s_qbmask; /* ~usb_bmask */
768 __s64 s_qfmask; /* ~usb_fmask */
769 __s32 s_postblformat; /* format of positional layout tables */
770 __s32 s_nrpos; /* number of rotational positions */
771 __s32 s_postbloff; /* (__s16) rotation block list head */
772 __s32 s_rotbloff; /* (__u8) blocks for each rotation */
773
774 __u32 s_fpbmask; /* fragments per block mask */
775 __u32 s_apb; /* address per block */
776 __u32 s_2apb; /* address per block^2 */
777 __u32 s_3apb; /* address per block^3 */
778 __u32 s_apbmask; /* address per block mask */
779 __u32 s_apbshift; /* address per block shift */
780 __u32 s_2apbshift; /* address per block shift * 2 */
781 __u32 s_3apbshift; /* address per block shift * 3 */
782 __u32 s_nspfshift; /* number of sector per fragment shift */
783 __u32 s_nspb; /* number of sector per block */
784 __u32 s_inopf; /* inodes per fragment */
785 __u32 s_sbbase; /* offset of NeXTstep superblock */
786 __u32 s_bpf; /* bits per fragment */
787 __u32 s_bpfshift; /* bits per fragment shift*/
788 __u32 s_bpfmask; /* bits per fragment mask */
789
790 __u32 s_maxsymlinklen;/* upper limit on fast symlinks' size */
791 __s32 fs_magic; /* filesystem magic */
792};
793
794/*
795 * Sizes of this structures are:
796 * ufs_super_block_first 512
797 * ufs_super_block_second 512
798 * ufs_super_block_third 356
799 */
800struct ufs_super_block_first {
801 __fs32 fs_link;
802 __fs32 fs_rlink;
803 __fs32 fs_sblkno;
804 __fs32 fs_cblkno;
805 __fs32 fs_iblkno;
806 __fs32 fs_dblkno;
807 __fs32 fs_cgoffset;
808 __fs32 fs_cgmask;
809 __fs32 fs_time;
810 __fs32 fs_size;
811 __fs32 fs_dsize;
812 __fs32 fs_ncg;
813 __fs32 fs_bsize;
814 __fs32 fs_fsize;
815 __fs32 fs_frag;
816 __fs32 fs_minfree;
817 __fs32 fs_rotdelay;
818 __fs32 fs_rps;
819 __fs32 fs_bmask;
820 __fs32 fs_fmask;
821 __fs32 fs_bshift;
822 __fs32 fs_fshift;
823 __fs32 fs_maxcontig;
824 __fs32 fs_maxbpg;
825 __fs32 fs_fragshift;
826 __fs32 fs_fsbtodb;
827 __fs32 fs_sbsize;
828 __fs32 fs_csmask;
829 __fs32 fs_csshift;
830 __fs32 fs_nindir;
831 __fs32 fs_inopb;
832 __fs32 fs_nspf;
833 __fs32 fs_optim;
834 union {
835 struct {
836 __fs32 fs_npsect;
837 } fs_sun;
838 struct {
839 __fs32 fs_state;
840 } fs_sunx86;
841 } fs_u1;
842 __fs32 fs_interleave;
843 __fs32 fs_trackskew;
844 __fs32 fs_id[2];
845 __fs32 fs_csaddr;
846 __fs32 fs_cssize;
847 __fs32 fs_cgsize;
848 __fs32 fs_ntrak;
849 __fs32 fs_nsect;
850 __fs32 fs_spc;
851 __fs32 fs_ncyl;
852 __fs32 fs_cpg;
853 __fs32 fs_ipg;
854 __fs32 fs_fpg;
855 struct ufs_csum fs_cstotal;
856 __s8 fs_fmod;
857 __s8 fs_clean;
858 __s8 fs_ronly;
859 __s8 fs_flags;
860 __s8 fs_fsmnt[UFS_MAXMNTLEN - 212];
861
862};
863
864struct ufs_super_block_second {
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700865 union {
866 struct {
867 __s8 fs_fsmnt[212];
868 __fs32 fs_cgrotor;
869 __fs32 fs_csp[UFS_MAXCSBUFS];
870 __fs32 fs_maxcluster;
871 __fs32 fs_cpc;
872 __fs16 fs_opostbl[82];
873 } fs_u1;
874 struct {
875 __s8 fs_fsmnt[UFS2_MAXMNTLEN - UFS_MAXMNTLEN + 212];
876 __u8 fs_volname[UFS2_MAXVOLLEN];
877 __fs64 fs_swuid;
878 __fs32 fs_pad;
879 __fs32 fs_cgrotor;
880 __fs32 fs_ocsp[UFS2_NOCSPTRS];
881 __fs32 fs_contigdirs;
882 __fs32 fs_csp;
883 __fs32 fs_maxcluster;
884 __fs32 fs_active;
885 __fs32 fs_old_cpc;
886 __fs32 fs_maxbsize;
887 __fs64 fs_sparecon64[17];
888 __fs64 fs_sblockloc;
889 __fs64 cs_ndir;
890 __fs64 cs_nbfree;
891 } fs_u2;
892 } fs_un;
893};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700894
895struct ufs_super_block_third {
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700896 union {
897 struct {
898 __fs16 fs_opostbl[46];
899 } fs_u1;
900 struct {
901 __fs64 cs_nifree; /* number of free inodes */
902 __fs64 cs_nffree; /* number of free frags */
903 __fs64 cs_numclusters; /* number of free clusters */
904 __fs64 cs_spare[3]; /* future expansion */
905 struct ufs_timeval fs_time; /* last time written */
906 __fs64 fs_size; /* number of blocks in fs */
907 __fs64 fs_dsize; /* number of data blocks in fs */
908 __fs64 fs_csaddr; /* blk addr of cyl grp summary area */
909 __fs64 fs_pendingblocks;/* blocks in process of being freed */
910 __fs32 fs_pendinginodes;/*inodes in process of being freed */
Eric Sandeen86f4f0f2006-11-02 22:07:05 -0800911 } __attribute__ ((packed)) fs_u2;
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700912 } fs_un1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913 union {
914 struct {
915 __fs32 fs_sparecon[53];/* reserved for future constants */
916 __fs32 fs_reclaim;
917 __fs32 fs_sparecon2[1];
918 __fs32 fs_state; /* file system state time stamp */
919 __fs32 fs_qbmask[2]; /* ~usb_bmask */
920 __fs32 fs_qfmask[2]; /* ~usb_fmask */
921 } fs_sun;
922 struct {
923 __fs32 fs_sparecon[53];/* reserved for future constants */
924 __fs32 fs_reclaim;
925 __fs32 fs_sparecon2[1];
926 __fs32 fs_npsect; /* # sectors/track including spares */
927 __fs32 fs_qbmask[2]; /* ~usb_bmask */
928 __fs32 fs_qfmask[2]; /* ~usb_fmask */
929 } fs_sunx86;
930 struct {
931 __fs32 fs_sparecon[50];/* reserved for future constants */
932 __fs32 fs_contigsumsize;/* size of cluster summary array */
933 __fs32 fs_maxsymlinklen;/* max length of an internal symlink */
934 __fs32 fs_inodefmt; /* format of on-disk inodes */
935 __fs32 fs_maxfilesize[2]; /* max representable file size */
936 __fs32 fs_qbmask[2]; /* ~usb_bmask */
937 __fs32 fs_qfmask[2]; /* ~usb_fmask */
938 __fs32 fs_state; /* file system state time stamp */
939 } fs_44;
Evgeniy Dushistov647b7e82006-06-25 05:47:29 -0700940 } fs_un2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700941 __fs32 fs_postblformat;
942 __fs32 fs_nrpos;
943 __fs32 fs_postbloff;
944 __fs32 fs_rotbloff;
945 __fs32 fs_magic;
946 __u8 fs_space[1];
947};
948
949#ifdef __KERNEL__
950
951/* balloc.c */
952extern void ufs_free_fragments (struct inode *, unsigned, unsigned);
953extern void ufs_free_blocks (struct inode *, unsigned, unsigned);
Evgeniy Dushistov6ef4d6b2006-06-25 05:47:20 -0700954extern unsigned ufs_new_fragments(struct inode *, __fs32 *, unsigned, unsigned,
955 unsigned, int *, struct page *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956
957/* cylinder.c */
958extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
959extern void ufs_put_cylinder (struct super_block *, unsigned);
960
961/* dir.c */
962extern struct inode_operations ufs_dir_inode_operations;
963extern int ufs_add_link (struct dentry *, struct inode *);
964extern ino_t ufs_inode_by_name(struct inode *, struct dentry *);
965extern int ufs_make_empty(struct inode *, struct inode *);
Evgeniy Dushistovb71034e2006-06-25 05:47:22 -0700966extern struct ufs_dir_entry *ufs_find_entry(struct inode *, struct dentry *, struct page **);
967extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700968extern int ufs_empty_dir (struct inode *);
Evgeniy Dushistovb71034e2006-06-25 05:47:22 -0700969extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
970extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
971 struct page *page, struct inode *inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700972
973/* file.c */
974extern struct inode_operations ufs_file_inode_operations;
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -0800975extern const struct file_operations ufs_file_operations;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700976
Christoph Hellwigf5e54d62006-06-28 04:26:44 -0700977extern const struct address_space_operations ufs_aops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700978
979/* ialloc.c */
980extern void ufs_free_inode (struct inode *inode);
981extern struct inode * ufs_new_inode (struct inode *, int);
982
983/* inode.c */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700984extern void ufs_read_inode (struct inode *);
985extern void ufs_put_inode (struct inode *);
986extern int ufs_write_inode (struct inode *, int);
987extern int ufs_sync_inode (struct inode *);
988extern void ufs_delete_inode (struct inode *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700989extern struct buffer_head * ufs_bread (struct inode *, unsigned, int, int *);
Evgeniy Dushistov09114eb2006-02-03 03:04:06 -0800990extern int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991
992/* namei.c */
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -0800993extern const struct file_operations ufs_dir_operations;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700994
995/* super.c */
996extern void ufs_warning (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
997extern void ufs_error (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
998extern void ufs_panic (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4)));
999
1000/* symlink.c */
1001extern struct inode_operations ufs_fast_symlink_inode_operations;
1002
1003/* truncate.c */
Evgeniy Dushistov10e5dce2006-07-01 04:36:24 -07001004extern int ufs_truncate (struct inode *, loff_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005
1006static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
1007{
1008 return sb->s_fs_info;
1009}
1010
1011static inline struct ufs_inode_info *UFS_I(struct inode *inode)
1012{
1013 return container_of(inode, struct ufs_inode_info, vfs_inode);
1014}
1015
1016#endif /* __KERNEL__ */
1017
1018#endif /* __LINUX_UFS_FS_H */