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1da177e4 LT |
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> | |
1da177e4 LT |
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 | |
54fb996a | 43 | #include <asm/div64.h> |
1da177e4 LT |
44 | typedef __u64 __bitwise __fs64; |
45 | typedef __u32 __bitwise __fs32; | |
46 | typedef __u16 __bitwise __fs16; | |
47 | #endif | |
48 | ||
eb585708 | 49 | #ifdef __KERNEL__ |
1da177e4 LT |
50 | #include <linux/ufs_fs_i.h> |
51 | #include <linux/ufs_fs_sb.h> | |
eb585708 | 52 | #endif |
1da177e4 LT |
53 | |
54 | #define UFS_BBLOCK 0 | |
55 | #define UFS_BBSIZE 8192 | |
56 | #define UFS_SBLOCK 8192 | |
57 | #define UFS_SBSIZE 8192 | |
58 | ||
59 | #define UFS_SECTOR_SIZE 512 | |
60 | #define UFS_SECTOR_BITS 9 | |
61 | #define UFS_MAGIC 0x00011954 | |
62 | #define UFS2_MAGIC 0x19540119 | |
63 | #define UFS_CIGAM 0x54190100 /* byteswapped MAGIC */ | |
64 | ||
65 | /* Copied from FreeBSD */ | |
66 | /* | |
67 | * Each disk drive contains some number of filesystems. | |
68 | * A filesystem consists of a number of cylinder groups. | |
69 | * Each cylinder group has inodes and data. | |
70 | * | |
71 | * A filesystem is described by its super-block, which in turn | |
72 | * describes the cylinder groups. The super-block is critical | |
73 | * data and is replicated in each cylinder group to protect against | |
74 | * catastrophic loss. This is done at `newfs' time and the critical | |
75 | * super-block data does not change, so the copies need not be | |
76 | * referenced further unless disaster strikes. | |
77 | * | |
78 | * For filesystem fs, the offsets of the various blocks of interest | |
79 | * are given in the super block as: | |
80 | * [fs->fs_sblkno] Super-block | |
81 | * [fs->fs_cblkno] Cylinder group block | |
82 | * [fs->fs_iblkno] Inode blocks | |
83 | * [fs->fs_dblkno] Data blocks | |
84 | * The beginning of cylinder group cg in fs, is given by | |
85 | * the ``cgbase(fs, cg)'' macro. | |
86 | * | |
87 | * Depending on the architecture and the media, the superblock may | |
88 | * reside in any one of four places. For tiny media where every block | |
89 | * counts, it is placed at the very front of the partition. Historically, | |
90 | * UFS1 placed it 8K from the front to leave room for the disk label and | |
91 | * a small bootstrap. For UFS2 it got moved to 64K from the front to leave | |
92 | * room for the disk label and a bigger bootstrap, and for really piggy | |
93 | * systems we check at 256K from the front if the first three fail. In | |
94 | * all cases the size of the superblock will be SBLOCKSIZE. All values are | |
95 | * given in byte-offset form, so they do not imply a sector size. The | |
96 | * SBLOCKSEARCH specifies the order in which the locations should be searched. | |
97 | */ | |
98 | #define SBLOCK_FLOPPY 0 | |
99 | #define SBLOCK_UFS1 8192 | |
100 | #define SBLOCK_UFS2 65536 | |
101 | #define SBLOCK_PIGGY 262144 | |
102 | #define SBLOCKSIZE 8192 | |
103 | #define SBLOCKSEARCH \ | |
104 | { SBLOCK_UFS2, SBLOCK_UFS1, SBLOCK_FLOPPY, SBLOCK_PIGGY, -1 } | |
105 | ||
106 | ||
107 | /* HP specific MAGIC values */ | |
108 | ||
109 | #define UFS_MAGIC_LFN 0x00095014 /* fs supports filenames > 14 chars */ | |
110 | #define UFS_CIGAM_LFN 0x14500900 /* srahc 41 < semanelif stroppus sf */ | |
111 | ||
112 | #define UFS_MAGIC_SEC 0x00612195 /* B1 security fs */ | |
113 | #define UFS_CIGAM_SEC 0x95216100 | |
114 | ||
115 | #define UFS_MAGIC_FEA 0x00195612 /* fs_featurebits supported */ | |
116 | #define UFS_CIGAM_FEA 0x12561900 | |
117 | ||
118 | #define UFS_MAGIC_4GB 0x05231994 /* fs > 4 GB && fs_featurebits */ | |
119 | #define UFS_CIGAM_4GB 0x94192305 | |
120 | ||
121 | /* Seems somebody at HP goofed here. B1 and lfs are both 0x2 !?! */ | |
122 | #define UFS_FSF_LFN 0x00000001 /* long file names */ | |
123 | #define UFS_FSF_B1 0x00000002 /* B1 security */ | |
124 | #define UFS_FSF_LFS 0x00000002 /* large files */ | |
125 | #define UFS_FSF_LUID 0x00000004 /* large UIDs */ | |
126 | ||
127 | /* End of HP stuff */ | |
128 | ||
129 | ||
130 | #define UFS_BSIZE 8192 | |
131 | #define UFS_MINBSIZE 4096 | |
132 | #define UFS_FSIZE 1024 | |
133 | #define UFS_MAXFRAG (UFS_BSIZE / UFS_FSIZE) | |
134 | ||
135 | #define UFS_NDADDR 12 | |
136 | #define UFS_NINDIR 3 | |
137 | ||
138 | #define UFS_IND_BLOCK (UFS_NDADDR + 0) | |
139 | #define UFS_DIND_BLOCK (UFS_NDADDR + 1) | |
140 | #define UFS_TIND_BLOCK (UFS_NDADDR + 2) | |
141 | ||
142 | #define UFS_NDIR_FRAGMENT (UFS_NDADDR << uspi->s_fpbshift) | |
143 | #define UFS_IND_FRAGMENT (UFS_IND_BLOCK << uspi->s_fpbshift) | |
144 | #define UFS_DIND_FRAGMENT (UFS_DIND_BLOCK << uspi->s_fpbshift) | |
145 | #define UFS_TIND_FRAGMENT (UFS_TIND_BLOCK << uspi->s_fpbshift) | |
146 | ||
147 | #define UFS_ROOTINO 2 | |
148 | #define UFS_FIRST_INO (UFS_ROOTINO + 1) | |
149 | ||
150 | #define UFS_USEEFT ((__u16)65535) | |
151 | ||
152 | #define UFS_FSOK 0x7c269d38 | |
9d923a06 AS |
153 | #define UFS_FSACTIVE ((__s8)0x00) |
154 | #define UFS_FSCLEAN ((__s8)0x01) | |
155 | #define UFS_FSSTABLE ((__s8)0x02) | |
156 | #define UFS_FSOSF1 ((__s8)0x03) /* is this correct for DEC OSF/1? */ | |
157 | #define UFS_FSBAD ((__s8)0xff) | |
1da177e4 LT |
158 | |
159 | /* From here to next blank line, s_flags for ufs_sb_info */ | |
160 | /* directory entry encoding */ | |
161 | #define UFS_DE_MASK 0x00000010 /* mask for the following */ | |
162 | #define UFS_DE_OLD 0x00000000 | |
163 | #define UFS_DE_44BSD 0x00000010 | |
164 | /* uid encoding */ | |
165 | #define UFS_UID_MASK 0x00000060 /* mask for the following */ | |
166 | #define UFS_UID_OLD 0x00000000 | |
167 | #define UFS_UID_44BSD 0x00000020 | |
168 | #define UFS_UID_EFT 0x00000040 | |
169 | /* superblock state encoding */ | |
170 | #define UFS_ST_MASK 0x00000700 /* mask for the following */ | |
171 | #define UFS_ST_OLD 0x00000000 | |
172 | #define UFS_ST_44BSD 0x00000100 | |
173 | #define UFS_ST_SUN 0x00000200 | |
174 | #define UFS_ST_SUNx86 0x00000400 | |
175 | /*cylinder group encoding */ | |
176 | #define UFS_CG_MASK 0x00003000 /* mask for the following */ | |
177 | #define UFS_CG_OLD 0x00000000 | |
178 | #define UFS_CG_44BSD 0x00002000 | |
179 | #define UFS_CG_SUN 0x00001000 | |
180 | /* filesystem type encoding */ | |
181 | #define UFS_TYPE_MASK 0x00010000 /* mask for the following */ | |
182 | #define UFS_TYPE_UFS1 0x00000000 | |
183 | #define UFS_TYPE_UFS2 0x00010000 | |
184 | ||
185 | ||
186 | /* fs_inodefmt options */ | |
187 | #define UFS_42INODEFMT -1 | |
188 | #define UFS_44INODEFMT 2 | |
189 | ||
190 | /* mount options */ | |
191 | #define UFS_MOUNT_ONERROR 0x0000000F | |
192 | #define UFS_MOUNT_ONERROR_PANIC 0x00000001 | |
193 | #define UFS_MOUNT_ONERROR_LOCK 0x00000002 | |
194 | #define UFS_MOUNT_ONERROR_UMOUNT 0x00000004 | |
195 | #define UFS_MOUNT_ONERROR_REPAIR 0x00000008 | |
196 | ||
197 | #define UFS_MOUNT_UFSTYPE 0x0000FFF0 | |
198 | #define UFS_MOUNT_UFSTYPE_OLD 0x00000010 | |
199 | #define UFS_MOUNT_UFSTYPE_44BSD 0x00000020 | |
200 | #define UFS_MOUNT_UFSTYPE_SUN 0x00000040 | |
201 | #define UFS_MOUNT_UFSTYPE_NEXTSTEP 0x00000080 | |
202 | #define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD 0x00000100 | |
203 | #define UFS_MOUNT_UFSTYPE_OPENSTEP 0x00000200 | |
204 | #define UFS_MOUNT_UFSTYPE_SUNx86 0x00000400 | |
205 | #define UFS_MOUNT_UFSTYPE_HP 0x00000800 | |
206 | #define UFS_MOUNT_UFSTYPE_UFS2 0x00001000 | |
207 | ||
208 | #define ufs_clear_opt(o,opt) o &= ~UFS_MOUNT_##opt | |
209 | #define ufs_set_opt(o,opt) o |= UFS_MOUNT_##opt | |
210 | #define ufs_test_opt(o,opt) ((o) & UFS_MOUNT_##opt) | |
211 | ||
212 | /* | |
213 | * MINFREE gives the minimum acceptable percentage of file system | |
214 | * blocks which may be free. If the freelist drops below this level | |
215 | * only the superuser may continue to allocate blocks. This may | |
216 | * be set to 0 if no reserve of free blocks is deemed necessary, | |
217 | * however throughput drops by fifty percent if the file system | |
218 | * is run at between 95% and 100% full; thus the minimum default | |
219 | * value of fs_minfree is 5%. However, to get good clustering | |
220 | * performance, 10% is a better choice. hence we use 10% as our | |
221 | * default value. With 10% free space, fragmentation is not a | |
222 | * problem, so we choose to optimize for time. | |
223 | */ | |
224 | #define UFS_MINFREE 5 | |
225 | #define UFS_DEFAULTOPT UFS_OPTTIME | |
abf5d15f ED |
226 | |
227 | /* | |
228 | * Debug code | |
229 | */ | |
230 | #ifdef CONFIG_UFS_DEBUG | |
231 | # define UFSD(f, a...) { \ | |
232 | printk ("UFSD (%s, %d): %s:", \ | |
233 | __FILE__, __LINE__, __FUNCTION__); \ | |
234 | printk (f, ## a); \ | |
235 | } | |
236 | #else | |
237 | # define UFSD(f, a...) /**/ | |
238 | #endif | |
1da177e4 LT |
239 | |
240 | /* | |
241 | * Turn file system block numbers into disk block addresses. | |
242 | * This maps file system blocks to device size blocks. | |
243 | */ | |
244 | #define ufs_fsbtodb(uspi, b) ((b) << (uspi)->s_fsbtodb) | |
245 | #define ufs_dbtofsb(uspi, b) ((b) >> (uspi)->s_fsbtodb) | |
246 | ||
247 | /* | |
248 | * Cylinder group macros to locate things in cylinder groups. | |
249 | * They calc file system addresses of cylinder group data structures. | |
250 | */ | |
251 | #define ufs_cgbase(c) (uspi->s_fpg * (c)) | |
252 | #define ufs_cgstart(c) ((uspi)->fs_magic == UFS2_MAGIC ? ufs_cgbase(c) : \ | |
253 | (ufs_cgbase(c) + uspi->s_cgoffset * ((c) & ~uspi->s_cgmask))) | |
254 | #define ufs_cgsblock(c) (ufs_cgstart(c) + uspi->s_sblkno) /* super blk */ | |
255 | #define ufs_cgcmin(c) (ufs_cgstart(c) + uspi->s_cblkno) /* cg block */ | |
256 | #define ufs_cgimin(c) (ufs_cgstart(c) + uspi->s_iblkno) /* inode blk */ | |
257 | #define ufs_cgdmin(c) (ufs_cgstart(c) + uspi->s_dblkno) /* 1st data */ | |
258 | ||
259 | /* | |
260 | * Macros for handling inode numbers: | |
261 | * inode number to file system block offset. | |
262 | * inode number to cylinder group number. | |
263 | * inode number to file system block address. | |
264 | */ | |
265 | #define ufs_inotocg(x) ((x) / uspi->s_ipg) | |
266 | #define ufs_inotocgoff(x) ((x) % uspi->s_ipg) | |
3313e292 | 267 | #define ufs_inotofsba(x) (((u64)ufs_cgimin(ufs_inotocg(x))) + ufs_inotocgoff(x) / uspi->s_inopf) |
1da177e4 LT |
268 | #define ufs_inotofsbo(x) ((x) % uspi->s_inopf) |
269 | ||
1da177e4 LT |
270 | /* |
271 | * Compute the cylinder and rotational position of a cyl block addr. | |
272 | */ | |
273 | #define ufs_cbtocylno(bno) \ | |
274 | ((bno) * uspi->s_nspf / uspi->s_spc) | |
275 | #define ufs_cbtorpos(bno) \ | |
276 | ((((bno) * uspi->s_nspf % uspi->s_spc / uspi->s_nsect \ | |
277 | * uspi->s_trackskew + (bno) * uspi->s_nspf % uspi->s_spc \ | |
278 | % uspi->s_nsect * uspi->s_interleave) % uspi->s_nsect \ | |
279 | * uspi->s_nrpos) / uspi->s_npsect) | |
280 | ||
281 | /* | |
282 | * The following macros optimize certain frequently calculated | |
283 | * quantities by using shifts and masks in place of divisions | |
284 | * modulos and multiplications. | |
285 | */ | |
286 | #define ufs_blkoff(loc) ((loc) & uspi->s_qbmask) | |
287 | #define ufs_fragoff(loc) ((loc) & uspi->s_qfmask) | |
288 | #define ufs_lblktosize(blk) ((blk) << uspi->s_bshift) | |
289 | #define ufs_lblkno(loc) ((loc) >> uspi->s_bshift) | |
290 | #define ufs_numfrags(loc) ((loc) >> uspi->s_fshift) | |
291 | #define ufs_blkroundup(size) (((size) + uspi->s_qbmask) & uspi->s_bmask) | |
292 | #define ufs_fragroundup(size) (((size) + uspi->s_qfmask) & uspi->s_fmask) | |
293 | #define ufs_fragstoblks(frags) ((frags) >> uspi->s_fpbshift) | |
294 | #define ufs_blkstofrags(blks) ((blks) << uspi->s_fpbshift) | |
295 | #define ufs_fragnum(fsb) ((fsb) & uspi->s_fpbmask) | |
296 | #define ufs_blknum(fsb) ((fsb) & ~uspi->s_fpbmask) | |
297 | ||
298 | #define UFS_MAXNAMLEN 255 | |
299 | #define UFS_MAXMNTLEN 512 | |
300 | #define UFS2_MAXMNTLEN 468 | |
301 | #define UFS2_MAXVOLLEN 32 | |
eb585708 | 302 | #define UFS_MAXCSBUFS 31 |
1da177e4 LT |
303 | #define UFS_LINK_MAX 32000 |
304 | /* | |
305 | #define UFS2_NOCSPTRS ((128 / sizeof(void *)) - 4) | |
306 | */ | |
307 | #define UFS2_NOCSPTRS 28 | |
308 | ||
309 | /* | |
310 | * UFS_DIR_PAD defines the directory entries boundaries | |
311 | * (must be a multiple of 4) | |
312 | */ | |
313 | #define UFS_DIR_PAD 4 | |
314 | #define UFS_DIR_ROUND (UFS_DIR_PAD - 1) | |
315 | #define UFS_DIR_REC_LEN(name_len) (((name_len) + 1 + 8 + UFS_DIR_ROUND) & ~UFS_DIR_ROUND) | |
316 | ||
317 | struct ufs_timeval { | |
318 | __fs32 tv_sec; | |
319 | __fs32 tv_usec; | |
320 | }; | |
321 | ||
322 | struct ufs_dir_entry { | |
323 | __fs32 d_ino; /* inode number of this entry */ | |
324 | __fs16 d_reclen; /* length of this entry */ | |
325 | union { | |
326 | __fs16 d_namlen; /* actual length of d_name */ | |
327 | struct { | |
328 | __u8 d_type; /* file type */ | |
329 | __u8 d_namlen; /* length of string in d_name */ | |
330 | } d_44; | |
331 | } d_u; | |
332 | __u8 d_name[UFS_MAXNAMLEN + 1]; /* file name */ | |
333 | }; | |
334 | ||
335 | struct ufs_csum { | |
336 | __fs32 cs_ndir; /* number of directories */ | |
337 | __fs32 cs_nbfree; /* number of free blocks */ | |
338 | __fs32 cs_nifree; /* number of free inodes */ | |
339 | __fs32 cs_nffree; /* number of free frags */ | |
340 | }; | |
341 | struct ufs2_csum_total { | |
342 | __fs64 cs_ndir; /* number of directories */ | |
343 | __fs64 cs_nbfree; /* number of free blocks */ | |
344 | __fs64 cs_nifree; /* number of free inodes */ | |
345 | __fs64 cs_nffree; /* number of free frags */ | |
346 | __fs64 cs_numclusters; /* number of free clusters */ | |
347 | __fs64 cs_spare[3]; /* future expansion */ | |
348 | }; | |
349 | ||
44aa5359 AV |
350 | struct ufs_csum_core { |
351 | __u64 cs_ndir; /* number of directories */ | |
352 | __u64 cs_nbfree; /* number of free blocks */ | |
353 | __u64 cs_nifree; /* number of free inodes */ | |
354 | __u64 cs_nffree; /* number of free frags */ | |
355 | __u64 cs_numclusters; /* number of free clusters */ | |
356 | }; | |
357 | ||
ee3ffd6c ED |
358 | /* |
359 | * File system flags | |
360 | */ | |
361 | #define UFS_UNCLEAN 0x01 /* file system not clean at mount (unused) */ | |
362 | #define UFS_DOSOFTDEP 0x02 /* file system using soft dependencies */ | |
363 | #define UFS_NEEDSFSCK 0x04 /* needs sync fsck (FreeBSD compat, unused) */ | |
364 | #define UFS_INDEXDIRS 0x08 /* kernel supports indexed directories */ | |
365 | #define UFS_ACLS 0x10 /* file system has ACLs enabled */ | |
366 | #define UFS_MULTILABEL 0x20 /* file system is MAC multi-label */ | |
367 | #define UFS_FLAGS_UPDATED 0x80 /* flags have been moved to new location */ | |
368 | ||
647b7e87 | 369 | #if 0 |
1da177e4 LT |
370 | /* |
371 | * This is the actual superblock, as it is laid out on the disk. | |
647b7e87 ED |
372 | * Do NOT use this structure, because of sizeof(ufs_super_block) > 512 and |
373 | * it may occupy several blocks, use | |
374 | * struct ufs_super_block_(first,second,third) instead. | |
1da177e4 LT |
375 | */ |
376 | struct ufs_super_block { | |
377 | __fs32 fs_link; /* UNUSED */ | |
378 | __fs32 fs_rlink; /* UNUSED */ | |
379 | __fs32 fs_sblkno; /* addr of super-block in filesys */ | |
380 | __fs32 fs_cblkno; /* offset of cyl-block in filesys */ | |
381 | __fs32 fs_iblkno; /* offset of inode-blocks in filesys */ | |
382 | __fs32 fs_dblkno; /* offset of first data after cg */ | |
383 | __fs32 fs_cgoffset; /* cylinder group offset in cylinder */ | |
384 | __fs32 fs_cgmask; /* used to calc mod fs_ntrak */ | |
385 | __fs32 fs_time; /* last time written -- time_t */ | |
386 | __fs32 fs_size; /* number of blocks in fs */ | |
387 | __fs32 fs_dsize; /* number of data blocks in fs */ | |
388 | __fs32 fs_ncg; /* number of cylinder groups */ | |
389 | __fs32 fs_bsize; /* size of basic blocks in fs */ | |
390 | __fs32 fs_fsize; /* size of frag blocks in fs */ | |
391 | __fs32 fs_frag; /* number of frags in a block in fs */ | |
392 | /* these are configuration parameters */ | |
393 | __fs32 fs_minfree; /* minimum percentage of free blocks */ | |
394 | __fs32 fs_rotdelay; /* num of ms for optimal next block */ | |
395 | __fs32 fs_rps; /* disk revolutions per second */ | |
396 | /* these fields can be computed from the others */ | |
397 | __fs32 fs_bmask; /* ``blkoff'' calc of blk offsets */ | |
398 | __fs32 fs_fmask; /* ``fragoff'' calc of frag offsets */ | |
399 | __fs32 fs_bshift; /* ``lblkno'' calc of logical blkno */ | |
400 | __fs32 fs_fshift; /* ``numfrags'' calc number of frags */ | |
401 | /* these are configuration parameters */ | |
402 | __fs32 fs_maxcontig; /* max number of contiguous blks */ | |
403 | __fs32 fs_maxbpg; /* max number of blks per cyl group */ | |
404 | /* these fields can be computed from the others */ | |
405 | __fs32 fs_fragshift; /* block to frag shift */ | |
406 | __fs32 fs_fsbtodb; /* fsbtodb and dbtofsb shift constant */ | |
407 | __fs32 fs_sbsize; /* actual size of super block */ | |
408 | __fs32 fs_csmask; /* csum block offset */ | |
409 | __fs32 fs_csshift; /* csum block number */ | |
410 | __fs32 fs_nindir; /* value of NINDIR */ | |
411 | __fs32 fs_inopb; /* value of INOPB */ | |
412 | __fs32 fs_nspf; /* value of NSPF */ | |
413 | /* yet another configuration parameter */ | |
414 | __fs32 fs_optim; /* optimization preference, see below */ | |
415 | /* these fields are derived from the hardware */ | |
416 | union { | |
417 | struct { | |
418 | __fs32 fs_npsect; /* # sectors/track including spares */ | |
419 | } fs_sun; | |
420 | struct { | |
421 | __fs32 fs_state; /* file system state time stamp */ | |
422 | } fs_sunx86; | |
423 | } fs_u1; | |
424 | __fs32 fs_interleave; /* hardware sector interleave */ | |
425 | __fs32 fs_trackskew; /* sector 0 skew, per track */ | |
426 | /* a unique id for this filesystem (currently unused and unmaintained) */ | |
427 | /* In 4.3 Tahoe this space is used by fs_headswitch and fs_trkseek */ | |
428 | /* Neither of those fields is used in the Tahoe code right now but */ | |
429 | /* there could be problems if they are. */ | |
430 | __fs32 fs_id[2]; /* file system id */ | |
431 | /* sizes determined by number of cylinder groups and their sizes */ | |
432 | __fs32 fs_csaddr; /* blk addr of cyl grp summary area */ | |
433 | __fs32 fs_cssize; /* size of cyl grp summary area */ | |
434 | __fs32 fs_cgsize; /* cylinder group size */ | |
435 | /* these fields are derived from the hardware */ | |
436 | __fs32 fs_ntrak; /* tracks per cylinder */ | |
437 | __fs32 fs_nsect; /* sectors per track */ | |
438 | __fs32 fs_spc; /* sectors per cylinder */ | |
439 | /* this comes from the disk driver partitioning */ | |
440 | __fs32 fs_ncyl; /* cylinders in file system */ | |
441 | /* these fields can be computed from the others */ | |
442 | __fs32 fs_cpg; /* cylinders per group */ | |
443 | __fs32 fs_ipg; /* inodes per cylinder group */ | |
444 | __fs32 fs_fpg; /* blocks per group * fs_frag */ | |
445 | /* this data must be re-computed after crashes */ | |
446 | struct ufs_csum fs_cstotal; /* cylinder summary information */ | |
447 | /* these fields are cleared at mount time */ | |
448 | __s8 fs_fmod; /* super block modified flag */ | |
449 | __s8 fs_clean; /* file system is clean flag */ | |
450 | __s8 fs_ronly; /* mounted read-only flag */ | |
ee3ffd6c | 451 | __s8 fs_flags; |
1da177e4 LT |
452 | union { |
453 | struct { | |
454 | __s8 fs_fsmnt[UFS_MAXMNTLEN];/* name mounted on */ | |
455 | __fs32 fs_cgrotor; /* last cg searched */ | |
456 | __fs32 fs_csp[UFS_MAXCSBUFS];/*list of fs_cs info buffers */ | |
457 | __fs32 fs_maxcluster; | |
458 | __fs32 fs_cpc; /* cyl per cycle in postbl */ | |
459 | __fs16 fs_opostbl[16][8]; /* old rotation block list head */ | |
460 | } fs_u1; | |
461 | struct { | |
462 | __s8 fs_fsmnt[UFS2_MAXMNTLEN]; /* name mounted on */ | |
463 | __u8 fs_volname[UFS2_MAXVOLLEN]; /* volume name */ | |
464 | __fs64 fs_swuid; /* system-wide uid */ | |
465 | __fs32 fs_pad; /* due to alignment of fs_swuid */ | |
466 | __fs32 fs_cgrotor; /* last cg searched */ | |
467 | __fs32 fs_ocsp[UFS2_NOCSPTRS]; /*list of fs_cs info buffers */ | |
468 | __fs32 fs_contigdirs;/*# of contiguously allocated dirs */ | |
469 | __fs32 fs_csp; /* cg summary info buffer for fs_cs */ | |
470 | __fs32 fs_maxcluster; | |
471 | __fs32 fs_active;/* used by snapshots to track fs */ | |
472 | __fs32 fs_old_cpc; /* cyl per cycle in postbl */ | |
473 | __fs32 fs_maxbsize;/*maximum blocking factor permitted */ | |
474 | __fs64 fs_sparecon64[17];/*old rotation block list head */ | |
475 | __fs64 fs_sblockloc; /* byte offset of standard superblock */ | |
476 | struct ufs2_csum_total fs_cstotal;/*cylinder summary information*/ | |
477 | struct ufs_timeval fs_time; /* last time written */ | |
478 | __fs64 fs_size; /* number of blocks in fs */ | |
479 | __fs64 fs_dsize; /* number of data blocks in fs */ | |
480 | __fs64 fs_csaddr; /* blk addr of cyl grp summary area */ | |
481 | __fs64 fs_pendingblocks;/* blocks in process of being freed */ | |
482 | __fs32 fs_pendinginodes;/*inodes in process of being freed */ | |
483 | } fs_u2; | |
484 | } fs_u11; | |
485 | union { | |
486 | struct { | |
487 | __fs32 fs_sparecon[53];/* reserved for future constants */ | |
488 | __fs32 fs_reclaim; | |
489 | __fs32 fs_sparecon2[1]; | |
490 | __fs32 fs_state; /* file system state time stamp */ | |
491 | __fs32 fs_qbmask[2]; /* ~usb_bmask */ | |
492 | __fs32 fs_qfmask[2]; /* ~usb_fmask */ | |
493 | } fs_sun; | |
494 | struct { | |
495 | __fs32 fs_sparecon[53];/* reserved for future constants */ | |
496 | __fs32 fs_reclaim; | |
497 | __fs32 fs_sparecon2[1]; | |
498 | __fs32 fs_npsect; /* # sectors/track including spares */ | |
499 | __fs32 fs_qbmask[2]; /* ~usb_bmask */ | |
500 | __fs32 fs_qfmask[2]; /* ~usb_fmask */ | |
501 | } fs_sunx86; | |
502 | struct { | |
503 | __fs32 fs_sparecon[50];/* reserved for future constants */ | |
504 | __fs32 fs_contigsumsize;/* size of cluster summary array */ | |
505 | __fs32 fs_maxsymlinklen;/* max length of an internal symlink */ | |
506 | __fs32 fs_inodefmt; /* format of on-disk inodes */ | |
507 | __fs32 fs_maxfilesize[2]; /* max representable file size */ | |
508 | __fs32 fs_qbmask[2]; /* ~usb_bmask */ | |
509 | __fs32 fs_qfmask[2]; /* ~usb_fmask */ | |
510 | __fs32 fs_state; /* file system state time stamp */ | |
511 | } fs_44; | |
512 | } fs_u2; | |
513 | __fs32 fs_postblformat; /* format of positional layout tables */ | |
514 | __fs32 fs_nrpos; /* number of rotational positions */ | |
515 | __fs32 fs_postbloff; /* (__s16) rotation block list head */ | |
516 | __fs32 fs_rotbloff; /* (__u8) blocks for each rotation */ | |
517 | __fs32 fs_magic; /* magic number */ | |
518 | __u8 fs_space[1]; /* list of blocks for each rotation */ | |
519 | }; | |
647b7e87 | 520 | #endif/*struct ufs_super_block*/ |
1da177e4 LT |
521 | |
522 | /* | |
523 | * Preference for optimization. | |
524 | */ | |
525 | #define UFS_OPTTIME 0 /* minimize allocation time */ | |
526 | #define UFS_OPTSPACE 1 /* minimize disk fragmentation */ | |
527 | ||
528 | /* | |
529 | * Rotational layout table format types | |
530 | */ | |
531 | #define UFS_42POSTBLFMT -1 /* 4.2BSD rotational table format */ | |
532 | #define UFS_DYNAMICPOSTBLFMT 1 /* dynamic rotational table format */ | |
533 | ||
534 | /* | |
535 | * Convert cylinder group to base address of its global summary info. | |
536 | */ | |
e295cfcb | 537 | #define fs_cs(indx) s_csp[(indx)] |
1da177e4 LT |
538 | |
539 | /* | |
540 | * Cylinder group block for a file system. | |
541 | * | |
542 | * Writable fields in the cylinder group are protected by the associated | |
543 | * super block lock fs->fs_lock. | |
544 | */ | |
545 | #define CG_MAGIC 0x090255 | |
546 | #define ufs_cg_chkmagic(sb, ucg) \ | |
547 | (fs32_to_cpu((sb), (ucg)->cg_magic) == CG_MAGIC) | |
548 | ||
549 | /* | |
550 | * size of this structure is 172 B | |
551 | */ | |
552 | struct ufs_cylinder_group { | |
553 | __fs32 cg_link; /* linked list of cyl groups */ | |
554 | __fs32 cg_magic; /* magic number */ | |
555 | __fs32 cg_time; /* time last written */ | |
556 | __fs32 cg_cgx; /* we are the cgx'th cylinder group */ | |
557 | __fs16 cg_ncyl; /* number of cyl's this cg */ | |
558 | __fs16 cg_niblk; /* number of inode blocks this cg */ | |
559 | __fs32 cg_ndblk; /* number of data blocks this cg */ | |
560 | struct ufs_csum cg_cs; /* cylinder summary information */ | |
561 | __fs32 cg_rotor; /* position of last used block */ | |
562 | __fs32 cg_frotor; /* position of last used frag */ | |
563 | __fs32 cg_irotor; /* position of last used inode */ | |
564 | __fs32 cg_frsum[UFS_MAXFRAG]; /* counts of available frags */ | |
565 | __fs32 cg_btotoff; /* (__u32) block totals per cylinder */ | |
566 | __fs32 cg_boff; /* (short) free block positions */ | |
567 | __fs32 cg_iusedoff; /* (char) used inode map */ | |
568 | __fs32 cg_freeoff; /* (u_char) free block map */ | |
569 | __fs32 cg_nextfreeoff; /* (u_char) next available space */ | |
570 | union { | |
571 | struct { | |
572 | __fs32 cg_clustersumoff; /* (u_int32) counts of avail clusters */ | |
573 | __fs32 cg_clusteroff; /* (u_int8) free cluster map */ | |
574 | __fs32 cg_nclusterblks; /* number of clusters this cg */ | |
575 | __fs32 cg_sparecon[13]; /* reserved for future use */ | |
576 | } cg_44; | |
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_niblk; /* number of inode blocks this cg */ | |
582 | __fs32 cg_initediblk; /* last initialized inode */ | |
583 | __fs32 cg_sparecon32[3];/* reserved for future use */ | |
584 | __fs64 cg_time; /* time last written */ | |
585 | __fs64 cg_sparecon[3]; /* reserved for future use */ | |
586 | } cg_u2; | |
587 | __fs32 cg_sparecon[16]; /* reserved for future use */ | |
588 | } cg_u; | |
589 | __u8 cg_space[1]; /* space for cylinder group maps */ | |
590 | /* actually longer */ | |
591 | }; | |
592 | ||
593 | /* | |
594 | * structure of an on-disk inode | |
595 | */ | |
596 | struct ufs_inode { | |
597 | __fs16 ui_mode; /* 0x0 */ | |
598 | __fs16 ui_nlink; /* 0x2 */ | |
599 | union { | |
600 | struct { | |
601 | __fs16 ui_suid; /* 0x4 */ | |
602 | __fs16 ui_sgid; /* 0x6 */ | |
603 | } oldids; | |
604 | __fs32 ui_inumber; /* 0x4 lsf: inode number */ | |
605 | __fs32 ui_author; /* 0x4 GNU HURD: author */ | |
606 | } ui_u1; | |
607 | __fs64 ui_size; /* 0x8 */ | |
608 | struct ufs_timeval ui_atime; /* 0x10 access */ | |
609 | struct ufs_timeval ui_mtime; /* 0x18 modification */ | |
610 | struct ufs_timeval ui_ctime; /* 0x20 creation */ | |
611 | union { | |
612 | struct { | |
613 | __fs32 ui_db[UFS_NDADDR];/* 0x28 data blocks */ | |
614 | __fs32 ui_ib[UFS_NINDIR];/* 0x58 indirect blocks */ | |
615 | } ui_addr; | |
616 | __u8 ui_symlink[4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */ | |
617 | } ui_u2; | |
618 | __fs32 ui_flags; /* 0x64 immutable, append-only... */ | |
619 | __fs32 ui_blocks; /* 0x68 blocks in use */ | |
620 | __fs32 ui_gen; /* 0x6c like ext2 i_version, for NFS support */ | |
621 | union { | |
622 | struct { | |
623 | __fs32 ui_shadow; /* 0x70 shadow inode with security data */ | |
624 | __fs32 ui_uid; /* 0x74 long EFT version of uid */ | |
625 | __fs32 ui_gid; /* 0x78 long EFT version of gid */ | |
626 | __fs32 ui_oeftflag; /* 0x7c reserved */ | |
627 | } ui_sun; | |
628 | struct { | |
629 | __fs32 ui_uid; /* 0x70 File owner */ | |
630 | __fs32 ui_gid; /* 0x74 File group */ | |
631 | __fs32 ui_spare[2]; /* 0x78 reserved */ | |
632 | } ui_44; | |
633 | struct { | |
634 | __fs32 ui_uid; /* 0x70 */ | |
635 | __fs32 ui_gid; /* 0x74 */ | |
636 | __fs16 ui_modeh; /* 0x78 mode high bits */ | |
637 | __fs16 ui_spare; /* 0x7A unused */ | |
638 | __fs32 ui_trans; /* 0x7c filesystem translator */ | |
639 | } ui_hurd; | |
640 | } ui_u3; | |
641 | }; | |
642 | ||
643 | #define UFS_NXADDR 2 /* External addresses in inode. */ | |
644 | struct ufs2_inode { | |
645 | __fs16 ui_mode; /* 0: IFMT, permissions; see below. */ | |
646 | __fs16 ui_nlink; /* 2: File link count. */ | |
647 | __fs32 ui_uid; /* 4: File owner. */ | |
648 | __fs32 ui_gid; /* 8: File group. */ | |
649 | __fs32 ui_blksize; /* 12: Inode blocksize. */ | |
650 | __fs64 ui_size; /* 16: File byte count. */ | |
651 | __fs64 ui_blocks; /* 24: Bytes actually held. */ | |
2189850f ED |
652 | __fs64 ui_atime; /* 32: Last access time. */ |
653 | __fs64 ui_mtime; /* 40: Last modified time. */ | |
654 | __fs64 ui_ctime; /* 48: Last inode change time. */ | |
655 | __fs64 ui_birthtime; /* 56: Inode creation time. */ | |
1da177e4 LT |
656 | __fs32 ui_mtimensec; /* 64: Last modified time. */ |
657 | __fs32 ui_atimensec; /* 68: Last access time. */ | |
658 | __fs32 ui_ctimensec; /* 72: Last inode change time. */ | |
659 | __fs32 ui_birthnsec; /* 76: Inode creation time. */ | |
660 | __fs32 ui_gen; /* 80: Generation number. */ | |
661 | __fs32 ui_kernflags; /* 84: Kernel flags. */ | |
662 | __fs32 ui_flags; /* 88: Status flags (chflags). */ | |
663 | __fs32 ui_extsize; /* 92: External attributes block. */ | |
664 | __fs64 ui_extb[UFS_NXADDR];/* 96: External attributes block. */ | |
665 | union { | |
666 | struct { | |
667 | __fs64 ui_db[UFS_NDADDR]; /* 112: Direct disk blocks. */ | |
668 | __fs64 ui_ib[UFS_NINDIR];/* 208: Indirect disk blocks.*/ | |
669 | } ui_addr; | |
670 | __u8 ui_symlink[2*4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */ | |
671 | } ui_u2; | |
672 | __fs64 ui_spare[3]; /* 232: Reserved; currently unused */ | |
673 | }; | |
674 | ||
675 | ||
676 | /* FreeBSD has these in sys/stat.h */ | |
677 | /* ui_flags that can be set by a file owner */ | |
678 | #define UFS_UF_SETTABLE 0x0000ffff | |
679 | #define UFS_UF_NODUMP 0x00000001 /* do not dump */ | |
680 | #define UFS_UF_IMMUTABLE 0x00000002 /* immutable (can't "change") */ | |
681 | #define UFS_UF_APPEND 0x00000004 /* append-only */ | |
682 | #define UFS_UF_OPAQUE 0x00000008 /* directory is opaque (unionfs) */ | |
683 | #define UFS_UF_NOUNLINK 0x00000010 /* can't be removed or renamed */ | |
684 | /* ui_flags that only root can set */ | |
685 | #define UFS_SF_SETTABLE 0xffff0000 | |
686 | #define UFS_SF_ARCHIVED 0x00010000 /* archived */ | |
687 | #define UFS_SF_IMMUTABLE 0x00020000 /* immutable (can't "change") */ | |
688 | #define UFS_SF_APPEND 0x00040000 /* append-only */ | |
689 | #define UFS_SF_NOUNLINK 0x00100000 /* can't be removed or renamed */ | |
690 | ||
691 | /* | |
692 | * This structure is used for reading disk structures larger | |
693 | * than the size of fragment. | |
694 | */ | |
695 | struct ufs_buffer_head { | |
696 | __u64 fragment; /* first fragment */ | |
697 | __u64 count; /* number of fragments */ | |
698 | struct buffer_head * bh[UFS_MAXFRAG]; /* buffers */ | |
699 | }; | |
700 | ||
701 | struct ufs_cg_private_info { | |
9695ef16 | 702 | struct ufs_buffer_head c_ubh; |
1da177e4 LT |
703 | __u32 c_cgx; /* number of cylidner group */ |
704 | __u16 c_ncyl; /* number of cyl's this cg */ | |
705 | __u16 c_niblk; /* number of inode blocks this cg */ | |
706 | __u32 c_ndblk; /* number of data blocks this cg */ | |
707 | __u32 c_rotor; /* position of last used block */ | |
708 | __u32 c_frotor; /* position of last used frag */ | |
709 | __u32 c_irotor; /* position of last used inode */ | |
710 | __u32 c_btotoff; /* (__u32) block totals per cylinder */ | |
711 | __u32 c_boff; /* (short) free block positions */ | |
712 | __u32 c_iusedoff; /* (char) used inode map */ | |
713 | __u32 c_freeoff; /* (u_char) free block map */ | |
714 | __u32 c_nextfreeoff; /* (u_char) next available space */ | |
715 | __u32 c_clustersumoff;/* (u_int32) counts of avail clusters */ | |
716 | __u32 c_clusteroff; /* (u_int8) free cluster map */ | |
717 | __u32 c_nclusterblks; /* number of clusters this cg */ | |
718 | }; | |
719 | ||
54fb996a | 720 | |
1da177e4 LT |
721 | struct ufs_sb_private_info { |
722 | struct ufs_buffer_head s_ubh; /* buffer containing super block */ | |
44aa5359 | 723 | struct ufs_csum_core cs_total; |
1da177e4 LT |
724 | __u32 s_sblkno; /* offset of super-blocks in filesys */ |
725 | __u32 s_cblkno; /* offset of cg-block in filesys */ | |
726 | __u32 s_iblkno; /* offset of inode-blocks in filesys */ | |
727 | __u32 s_dblkno; /* offset of first data after cg */ | |
728 | __u32 s_cgoffset; /* cylinder group offset in cylinder */ | |
729 | __u32 s_cgmask; /* used to calc mod fs_ntrak */ | |
730 | __u32 s_size; /* number of blocks (fragments) in fs */ | |
731 | __u32 s_dsize; /* number of data blocks in fs */ | |
732 | __u64 s_u2_size; /* ufs2: number of blocks (fragments) in fs */ | |
733 | __u64 s_u2_dsize; /*ufs2: number of data blocks in fs */ | |
734 | __u32 s_ncg; /* number of cylinder groups */ | |
735 | __u32 s_bsize; /* size of basic blocks */ | |
736 | __u32 s_fsize; /* size of fragments */ | |
737 | __u32 s_fpb; /* fragments per block */ | |
738 | __u32 s_minfree; /* minimum percentage of free blocks */ | |
739 | __u32 s_bmask; /* `blkoff'' calc of blk offsets */ | |
740 | __u32 s_fmask; /* s_fsize mask */ | |
741 | __u32 s_bshift; /* `lblkno'' calc of logical blkno */ | |
742 | __u32 s_fshift; /* s_fsize shift */ | |
743 | __u32 s_fpbshift; /* fragments per block shift */ | |
744 | __u32 s_fsbtodb; /* fsbtodb and dbtofsb shift constant */ | |
745 | __u32 s_sbsize; /* actual size of super block */ | |
746 | __u32 s_csmask; /* csum block offset */ | |
747 | __u32 s_csshift; /* csum block number */ | |
748 | __u32 s_nindir; /* value of NINDIR */ | |
749 | __u32 s_inopb; /* value of INOPB */ | |
750 | __u32 s_nspf; /* value of NSPF */ | |
751 | __u32 s_npsect; /* # sectors/track including spares */ | |
752 | __u32 s_interleave; /* hardware sector interleave */ | |
753 | __u32 s_trackskew; /* sector 0 skew, per track */ | |
3313e292 | 754 | __u64 s_csaddr; /* blk addr of cyl grp summary area */ |
1da177e4 LT |
755 | __u32 s_cssize; /* size of cyl grp summary area */ |
756 | __u32 s_cgsize; /* cylinder group size */ | |
757 | __u32 s_ntrak; /* tracks per cylinder */ | |
758 | __u32 s_nsect; /* sectors per track */ | |
759 | __u32 s_spc; /* sectors per cylinder */ | |
760 | __u32 s_ipg; /* inodes per cylinder group */ | |
761 | __u32 s_fpg; /* fragments per group */ | |
762 | __u32 s_cpc; /* cyl per cycle in postbl */ | |
763 | __s32 s_contigsumsize;/* size of cluster summary array, 44bsd */ | |
764 | __s64 s_qbmask; /* ~usb_bmask */ | |
765 | __s64 s_qfmask; /* ~usb_fmask */ | |
766 | __s32 s_postblformat; /* format of positional layout tables */ | |
767 | __s32 s_nrpos; /* number of rotational positions */ | |
768 | __s32 s_postbloff; /* (__s16) rotation block list head */ | |
769 | __s32 s_rotbloff; /* (__u8) blocks for each rotation */ | |
770 | ||
771 | __u32 s_fpbmask; /* fragments per block mask */ | |
772 | __u32 s_apb; /* address per block */ | |
773 | __u32 s_2apb; /* address per block^2 */ | |
774 | __u32 s_3apb; /* address per block^3 */ | |
775 | __u32 s_apbmask; /* address per block mask */ | |
776 | __u32 s_apbshift; /* address per block shift */ | |
777 | __u32 s_2apbshift; /* address per block shift * 2 */ | |
778 | __u32 s_3apbshift; /* address per block shift * 3 */ | |
779 | __u32 s_nspfshift; /* number of sector per fragment shift */ | |
780 | __u32 s_nspb; /* number of sector per block */ | |
781 | __u32 s_inopf; /* inodes per fragment */ | |
782 | __u32 s_sbbase; /* offset of NeXTstep superblock */ | |
783 | __u32 s_bpf; /* bits per fragment */ | |
784 | __u32 s_bpfshift; /* bits per fragment shift*/ | |
785 | __u32 s_bpfmask; /* bits per fragment mask */ | |
786 | ||
787 | __u32 s_maxsymlinklen;/* upper limit on fast symlinks' size */ | |
788 | __s32 fs_magic; /* filesystem magic */ | |
f336953b | 789 | unsigned int s_dirblksize; |
1da177e4 LT |
790 | }; |
791 | ||
792 | /* | |
793 | * Sizes of this structures are: | |
794 | * ufs_super_block_first 512 | |
795 | * ufs_super_block_second 512 | |
796 | * ufs_super_block_third 356 | |
797 | */ | |
798 | struct ufs_super_block_first { | |
799 | __fs32 fs_link; | |
800 | __fs32 fs_rlink; | |
801 | __fs32 fs_sblkno; | |
802 | __fs32 fs_cblkno; | |
803 | __fs32 fs_iblkno; | |
804 | __fs32 fs_dblkno; | |
805 | __fs32 fs_cgoffset; | |
806 | __fs32 fs_cgmask; | |
807 | __fs32 fs_time; | |
808 | __fs32 fs_size; | |
809 | __fs32 fs_dsize; | |
810 | __fs32 fs_ncg; | |
811 | __fs32 fs_bsize; | |
812 | __fs32 fs_fsize; | |
813 | __fs32 fs_frag; | |
814 | __fs32 fs_minfree; | |
815 | __fs32 fs_rotdelay; | |
816 | __fs32 fs_rps; | |
817 | __fs32 fs_bmask; | |
818 | __fs32 fs_fmask; | |
819 | __fs32 fs_bshift; | |
820 | __fs32 fs_fshift; | |
821 | __fs32 fs_maxcontig; | |
822 | __fs32 fs_maxbpg; | |
823 | __fs32 fs_fragshift; | |
824 | __fs32 fs_fsbtodb; | |
825 | __fs32 fs_sbsize; | |
826 | __fs32 fs_csmask; | |
827 | __fs32 fs_csshift; | |
828 | __fs32 fs_nindir; | |
829 | __fs32 fs_inopb; | |
830 | __fs32 fs_nspf; | |
831 | __fs32 fs_optim; | |
832 | union { | |
833 | struct { | |
834 | __fs32 fs_npsect; | |
835 | } fs_sun; | |
836 | struct { | |
837 | __fs32 fs_state; | |
838 | } fs_sunx86; | |
839 | } fs_u1; | |
840 | __fs32 fs_interleave; | |
841 | __fs32 fs_trackskew; | |
842 | __fs32 fs_id[2]; | |
843 | __fs32 fs_csaddr; | |
844 | __fs32 fs_cssize; | |
845 | __fs32 fs_cgsize; | |
846 | __fs32 fs_ntrak; | |
847 | __fs32 fs_nsect; | |
848 | __fs32 fs_spc; | |
849 | __fs32 fs_ncyl; | |
850 | __fs32 fs_cpg; | |
851 | __fs32 fs_ipg; | |
852 | __fs32 fs_fpg; | |
853 | struct ufs_csum fs_cstotal; | |
854 | __s8 fs_fmod; | |
855 | __s8 fs_clean; | |
856 | __s8 fs_ronly; | |
857 | __s8 fs_flags; | |
858 | __s8 fs_fsmnt[UFS_MAXMNTLEN - 212]; | |
859 | ||
860 | }; | |
861 | ||
862 | struct ufs_super_block_second { | |
647b7e87 ED |
863 | union { |
864 | struct { | |
865 | __s8 fs_fsmnt[212]; | |
866 | __fs32 fs_cgrotor; | |
867 | __fs32 fs_csp[UFS_MAXCSBUFS]; | |
868 | __fs32 fs_maxcluster; | |
869 | __fs32 fs_cpc; | |
870 | __fs16 fs_opostbl[82]; | |
871 | } fs_u1; | |
872 | struct { | |
873 | __s8 fs_fsmnt[UFS2_MAXMNTLEN - UFS_MAXMNTLEN + 212]; | |
874 | __u8 fs_volname[UFS2_MAXVOLLEN]; | |
875 | __fs64 fs_swuid; | |
876 | __fs32 fs_pad; | |
877 | __fs32 fs_cgrotor; | |
878 | __fs32 fs_ocsp[UFS2_NOCSPTRS]; | |
879 | __fs32 fs_contigdirs; | |
880 | __fs32 fs_csp; | |
881 | __fs32 fs_maxcluster; | |
882 | __fs32 fs_active; | |
883 | __fs32 fs_old_cpc; | |
884 | __fs32 fs_maxbsize; | |
885 | __fs64 fs_sparecon64[17]; | |
886 | __fs64 fs_sblockloc; | |
887 | __fs64 cs_ndir; | |
888 | __fs64 cs_nbfree; | |
889 | } fs_u2; | |
890 | } fs_un; | |
891 | }; | |
1da177e4 LT |
892 | |
893 | struct ufs_super_block_third { | |
647b7e87 ED |
894 | union { |
895 | struct { | |
896 | __fs16 fs_opostbl[46]; | |
897 | } fs_u1; | |
898 | struct { | |
899 | __fs64 cs_nifree; /* number of free inodes */ | |
900 | __fs64 cs_nffree; /* number of free frags */ | |
901 | __fs64 cs_numclusters; /* number of free clusters */ | |
902 | __fs64 cs_spare[3]; /* future expansion */ | |
903 | struct ufs_timeval fs_time; /* last time written */ | |
904 | __fs64 fs_size; /* number of blocks in fs */ | |
905 | __fs64 fs_dsize; /* number of data blocks in fs */ | |
906 | __fs64 fs_csaddr; /* blk addr of cyl grp summary area */ | |
907 | __fs64 fs_pendingblocks;/* blocks in process of being freed */ | |
908 | __fs32 fs_pendinginodes;/*inodes in process of being freed */ | |
86f4f0f9 | 909 | } __attribute__ ((packed)) fs_u2; |
647b7e87 | 910 | } fs_un1; |
1da177e4 LT |
911 | union { |
912 | struct { | |
913 | __fs32 fs_sparecon[53];/* reserved for future constants */ | |
914 | __fs32 fs_reclaim; | |
915 | __fs32 fs_sparecon2[1]; | |
916 | __fs32 fs_state; /* file system state time stamp */ | |
917 | __fs32 fs_qbmask[2]; /* ~usb_bmask */ | |
918 | __fs32 fs_qfmask[2]; /* ~usb_fmask */ | |
919 | } fs_sun; | |
920 | struct { | |
921 | __fs32 fs_sparecon[53];/* reserved for future constants */ | |
922 | __fs32 fs_reclaim; | |
923 | __fs32 fs_sparecon2[1]; | |
924 | __fs32 fs_npsect; /* # sectors/track including spares */ | |
925 | __fs32 fs_qbmask[2]; /* ~usb_bmask */ | |
926 | __fs32 fs_qfmask[2]; /* ~usb_fmask */ | |
927 | } fs_sunx86; | |
928 | struct { | |
929 | __fs32 fs_sparecon[50];/* reserved for future constants */ | |
930 | __fs32 fs_contigsumsize;/* size of cluster summary array */ | |
931 | __fs32 fs_maxsymlinklen;/* max length of an internal symlink */ | |
932 | __fs32 fs_inodefmt; /* format of on-disk inodes */ | |
933 | __fs32 fs_maxfilesize[2]; /* max representable file size */ | |
934 | __fs32 fs_qbmask[2]; /* ~usb_bmask */ | |
935 | __fs32 fs_qfmask[2]; /* ~usb_fmask */ | |
936 | __fs32 fs_state; /* file system state time stamp */ | |
937 | } fs_44; | |
647b7e87 | 938 | } fs_un2; |
1da177e4 LT |
939 | __fs32 fs_postblformat; |
940 | __fs32 fs_nrpos; | |
941 | __fs32 fs_postbloff; | |
942 | __fs32 fs_rotbloff; | |
943 | __fs32 fs_magic; | |
944 | __u8 fs_space[1]; | |
945 | }; | |
946 | ||
947 | #ifdef __KERNEL__ | |
948 | ||
949 | /* balloc.c */ | |
54fb996a ED |
950 | extern void ufs_free_fragments (struct inode *, u64, unsigned); |
951 | extern void ufs_free_blocks (struct inode *, u64, unsigned); | |
952 | extern u64 ufs_new_fragments(struct inode *, void *, u64, u64, | |
953 | unsigned, int *, struct page *); | |
1da177e4 LT |
954 | |
955 | /* cylinder.c */ | |
956 | extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned); | |
957 | extern void ufs_put_cylinder (struct super_block *, unsigned); | |
958 | ||
959 | /* dir.c */ | |
c5ef1c42 | 960 | extern const struct inode_operations ufs_dir_inode_operations; |
1da177e4 LT |
961 | extern int ufs_add_link (struct dentry *, struct inode *); |
962 | extern ino_t ufs_inode_by_name(struct inode *, struct dentry *); | |
963 | extern int ufs_make_empty(struct inode *, struct inode *); | |
b71034e5 ED |
964 | extern struct ufs_dir_entry *ufs_find_entry(struct inode *, struct dentry *, struct page **); |
965 | extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *); | |
1da177e4 | 966 | extern int ufs_empty_dir (struct inode *); |
b71034e5 ED |
967 | extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **); |
968 | extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de, | |
969 | struct page *page, struct inode *inode); | |
1da177e4 LT |
970 | |
971 | /* file.c */ | |
c5ef1c42 | 972 | extern const struct inode_operations ufs_file_inode_operations; |
4b6f5d20 | 973 | extern const struct file_operations ufs_file_operations; |
1da177e4 | 974 | |
f5e54d6e | 975 | extern const struct address_space_operations ufs_aops; |
1da177e4 LT |
976 | |
977 | /* ialloc.c */ | |
978 | extern void ufs_free_inode (struct inode *inode); | |
979 | extern struct inode * ufs_new_inode (struct inode *, int); | |
980 | ||
981 | /* inode.c */ | |
1da177e4 LT |
982 | extern void ufs_read_inode (struct inode *); |
983 | extern void ufs_put_inode (struct inode *); | |
984 | extern int ufs_write_inode (struct inode *, int); | |
985 | extern int ufs_sync_inode (struct inode *); | |
986 | extern void ufs_delete_inode (struct inode *); | |
1da177e4 | 987 | extern struct buffer_head * ufs_bread (struct inode *, unsigned, int, int *); |
09114eb8 | 988 | extern int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create); |
1da177e4 LT |
989 | |
990 | /* namei.c */ | |
4b6f5d20 | 991 | extern const struct file_operations ufs_dir_operations; |
1da177e4 LT |
992 | |
993 | /* super.c */ | |
994 | extern void ufs_warning (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4))); | |
995 | extern void ufs_error (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4))); | |
996 | extern void ufs_panic (struct super_block *, const char *, const char *, ...) __attribute__ ((format (printf, 3, 4))); | |
997 | ||
998 | /* symlink.c */ | |
c5ef1c42 | 999 | extern const struct inode_operations ufs_fast_symlink_inode_operations; |
1da177e4 LT |
1000 | |
1001 | /* truncate.c */ | |
10e5dce0 | 1002 | extern int ufs_truncate (struct inode *, loff_t); |
1da177e4 LT |
1003 | |
1004 | static inline struct ufs_sb_info *UFS_SB(struct super_block *sb) | |
1005 | { | |
1006 | return sb->s_fs_info; | |
1007 | } | |
1008 | ||
1009 | static inline struct ufs_inode_info *UFS_I(struct inode *inode) | |
1010 | { | |
1011 | return container_of(inode, struct ufs_inode_info, vfs_inode); | |
1012 | } | |
1013 | ||
54fb996a ED |
1014 | /* |
1015 | * Give cylinder group number for a file system block. | |
1016 | * Give cylinder group block number for a file system block. | |
1017 | */ | |
1018 | /* #define ufs_dtog(d) ((d) / uspi->s_fpg) */ | |
1019 | static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b) | |
1020 | { | |
1021 | do_div(b, uspi->s_fpg); | |
1022 | return b; | |
1023 | } | |
1024 | /* #define ufs_dtogd(d) ((d) % uspi->s_fpg) */ | |
1025 | static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b) | |
1026 | { | |
1027 | return do_div(b, uspi->s_fpg); | |
1028 | } | |
1029 | ||
1da177e4 LT |
1030 | #endif /* __KERNEL__ */ |
1031 | ||
1032 | #endif /* __LINUX_UFS_FS_H */ |