ufs_fs.h 35 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962
  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. /*
  3. * linux/include/linux/ufs_fs.h
  4. *
  5. * Copyright (C) 1996
  6. * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu)
  7. * Laboratory for Computer Science Research Computing Facility
  8. * Rutgers, The State University of New Jersey
  9. *
  10. * Clean swab support by Fare <fare@tunes.org>
  11. * just hope no one is using NNUUXXI on __?64 structure elements
  12. * 64-bit clean thanks to Maciej W. Rozycki <macro@ds2.pg.gda.pl>
  13. *
  14. * 4.4BSD (FreeBSD) support added on February 1st 1998 by
  15. * Niels Kristian Bech Jensen <nkbj@image.dk> partially based
  16. * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>.
  17. *
  18. * NeXTstep support added on February 5th 1998 by
  19. * Niels Kristian Bech Jensen <nkbj@image.dk>.
  20. *
  21. * Write support by Daniel Pirkl <daniel.pirkl@email.cz>
  22. *
  23. * HP/UX hfs filesystem support added by
  24. * Martin K. Petersen <mkp@mkp.net>, August 1999
  25. *
  26. * UFS2 (of FreeBSD 5.x) support added by
  27. * Niraj Kumar <niraj17@iitbombay.org> , Jan 2004
  28. *
  29. */
  30. #ifndef __LINUX_UFS_FS_H
  31. #define __LINUX_UFS_FS_H
  32. #include <linux/types.h>
  33. #include <linux/kernel.h>
  34. #include <linux/stat.h>
  35. #include <linux/fs.h>
  36. #include <linux/workqueue.h>
  37. #include <asm/div64.h>
  38. typedef __u64 __bitwise __fs64;
  39. typedef __u32 __bitwise __fs32;
  40. typedef __u16 __bitwise __fs16;
  41. #define UFS_BBLOCK 0
  42. #define UFS_BBSIZE 8192
  43. #define UFS_SBLOCK 8192
  44. #define UFS_SBSIZE 8192
  45. #define UFS_SECTOR_SIZE 512
  46. #define UFS_SECTOR_BITS 9
  47. #define UFS_MAGIC 0x00011954
  48. #define UFS_MAGIC_BW 0x0f242697
  49. #define UFS2_MAGIC 0x19540119
  50. #define UFS_CIGAM 0x54190100 /* byteswapped MAGIC */
  51. /* Copied from FreeBSD */
  52. /*
  53. * Each disk drive contains some number of filesystems.
  54. * A filesystem consists of a number of cylinder groups.
  55. * Each cylinder group has inodes and data.
  56. *
  57. * A filesystem is described by its super-block, which in turn
  58. * describes the cylinder groups. The super-block is critical
  59. * data and is replicated in each cylinder group to protect against
  60. * catastrophic loss. This is done at `newfs' time and the critical
  61. * super-block data does not change, so the copies need not be
  62. * referenced further unless disaster strikes.
  63. *
  64. * For filesystem fs, the offsets of the various blocks of interest
  65. * are given in the super block as:
  66. * [fs->fs_sblkno] Super-block
  67. * [fs->fs_cblkno] Cylinder group block
  68. * [fs->fs_iblkno] Inode blocks
  69. * [fs->fs_dblkno] Data blocks
  70. * The beginning of cylinder group cg in fs, is given by
  71. * the ``cgbase(fs, cg)'' macro.
  72. *
  73. * Depending on the architecture and the media, the superblock may
  74. * reside in any one of four places. For tiny media where every block
  75. * counts, it is placed at the very front of the partition. Historically,
  76. * UFS1 placed it 8K from the front to leave room for the disk label and
  77. * a small bootstrap. For UFS2 it got moved to 64K from the front to leave
  78. * room for the disk label and a bigger bootstrap, and for really piggy
  79. * systems we check at 256K from the front if the first three fail. In
  80. * all cases the size of the superblock will be SBLOCKSIZE. All values are
  81. * given in byte-offset form, so they do not imply a sector size. The
  82. * SBLOCKSEARCH specifies the order in which the locations should be searched.
  83. */
  84. #define SBLOCK_FLOPPY 0
  85. #define SBLOCK_UFS1 8192
  86. #define SBLOCK_UFS2 65536
  87. #define SBLOCK_PIGGY 262144
  88. #define SBLOCKSIZE 8192
  89. #define SBLOCKSEARCH \
  90. { SBLOCK_UFS2, SBLOCK_UFS1, SBLOCK_FLOPPY, SBLOCK_PIGGY, -1 }
  91. /* HP specific MAGIC values */
  92. #define UFS_MAGIC_LFN 0x00095014 /* fs supports filenames > 14 chars */
  93. #define UFS_CIGAM_LFN 0x14500900 /* srahc 41 < semanelif stroppus sf */
  94. #define UFS_MAGIC_SEC 0x00612195 /* B1 security fs */
  95. #define UFS_CIGAM_SEC 0x95216100
  96. #define UFS_MAGIC_FEA 0x00195612 /* fs_featurebits supported */
  97. #define UFS_CIGAM_FEA 0x12561900
  98. #define UFS_MAGIC_4GB 0x05231994 /* fs > 4 GB && fs_featurebits */
  99. #define UFS_CIGAM_4GB 0x94192305
  100. /* Seems somebody at HP goofed here. B1 and lfs are both 0x2 !?! */
  101. #define UFS_FSF_LFN 0x00000001 /* long file names */
  102. #define UFS_FSF_B1 0x00000002 /* B1 security */
  103. #define UFS_FSF_LFS 0x00000002 /* large files */
  104. #define UFS_FSF_LUID 0x00000004 /* large UIDs */
  105. /* End of HP stuff */
  106. #define UFS_BSIZE 8192
  107. #define UFS_MINBSIZE 4096
  108. #define UFS_FSIZE 1024
  109. #define UFS_MAXFRAG (UFS_BSIZE / UFS_FSIZE)
  110. #define UFS_NDADDR 12
  111. #define UFS_NINDIR 3
  112. #define UFS_IND_BLOCK (UFS_NDADDR + 0)
  113. #define UFS_DIND_BLOCK (UFS_NDADDR + 1)
  114. #define UFS_TIND_BLOCK (UFS_NDADDR + 2)
  115. #define UFS_NDIR_FRAGMENT (UFS_NDADDR << uspi->s_fpbshift)
  116. #define UFS_IND_FRAGMENT (UFS_IND_BLOCK << uspi->s_fpbshift)
  117. #define UFS_DIND_FRAGMENT (UFS_DIND_BLOCK << uspi->s_fpbshift)
  118. #define UFS_TIND_FRAGMENT (UFS_TIND_BLOCK << uspi->s_fpbshift)
  119. #define UFS_ROOTINO 2
  120. #define UFS_FIRST_INO (UFS_ROOTINO + 1)
  121. #define UFS_USEEFT ((__u16)65535)
  122. /* fs_clean values */
  123. #define UFS_FSOK 0x7c269d38
  124. #define UFS_FSACTIVE ((__s8)0x00)
  125. #define UFS_FSCLEAN ((__s8)0x01)
  126. #define UFS_FSSTABLE ((__s8)0x02)
  127. #define UFS_FSOSF1 ((__s8)0x03) /* is this correct for DEC OSF/1? */
  128. #define UFS_FSBAD ((__s8)0xff)
  129. /* Solaris-specific fs_clean values */
  130. #define UFS_FSSUSPEND ((__s8)0xfe) /* temporarily suspended */
  131. #define UFS_FSLOG ((__s8)0xfd) /* logging fs */
  132. #define UFS_FSFIX ((__s8)0xfc) /* being repaired while mounted */
  133. /* From here to next blank line, s_flags for ufs_sb_info */
  134. /* directory entry encoding */
  135. #define UFS_DE_MASK 0x00000010 /* mask for the following */
  136. #define UFS_DE_OLD 0x00000000
  137. #define UFS_DE_44BSD 0x00000010
  138. /* uid encoding */
  139. #define UFS_UID_MASK 0x00000060 /* mask for the following */
  140. #define UFS_UID_OLD 0x00000000
  141. #define UFS_UID_44BSD 0x00000020
  142. #define UFS_UID_EFT 0x00000040
  143. /* superblock state encoding */
  144. #define UFS_ST_MASK 0x00000700 /* mask for the following */
  145. #define UFS_ST_OLD 0x00000000
  146. #define UFS_ST_44BSD 0x00000100
  147. #define UFS_ST_SUN 0x00000200 /* Solaris */
  148. #define UFS_ST_SUNOS 0x00000300
  149. #define UFS_ST_SUNx86 0x00000400 /* Solaris x86 */
  150. /*cylinder group encoding */
  151. #define UFS_CG_MASK 0x00003000 /* mask for the following */
  152. #define UFS_CG_OLD 0x00000000
  153. #define UFS_CG_44BSD 0x00002000
  154. #define UFS_CG_SUN 0x00001000
  155. /* filesystem type encoding */
  156. #define UFS_TYPE_MASK 0x00010000 /* mask for the following */
  157. #define UFS_TYPE_UFS1 0x00000000
  158. #define UFS_TYPE_UFS2 0x00010000
  159. /* fs_inodefmt options */
  160. #define UFS_42INODEFMT -1
  161. #define UFS_44INODEFMT 2
  162. /*
  163. * MINFREE gives the minimum acceptable percentage of file system
  164. * blocks which may be free. If the freelist drops below this level
  165. * only the superuser may continue to allocate blocks. This may
  166. * be set to 0 if no reserve of free blocks is deemed necessary,
  167. * however throughput drops by fifty percent if the file system
  168. * is run at between 95% and 100% full; thus the minimum default
  169. * value of fs_minfree is 5%. However, to get good clustering
  170. * performance, 10% is a better choice. hence we use 10% as our
  171. * default value. With 10% free space, fragmentation is not a
  172. * problem, so we choose to optimize for time.
  173. */
  174. #define UFS_MINFREE 5
  175. #define UFS_DEFAULTOPT UFS_OPTTIME
  176. /*
  177. * Turn file system block numbers into disk block addresses.
  178. * This maps file system blocks to device size blocks.
  179. */
  180. #define ufs_fsbtodb(uspi, b) ((b) << (uspi)->s_fsbtodb)
  181. #define ufs_dbtofsb(uspi, b) ((b) >> (uspi)->s_fsbtodb)
  182. /*
  183. * Cylinder group macros to locate things in cylinder groups.
  184. * They calc file system addresses of cylinder group data structures.
  185. */
  186. #define ufs_cgbase(c) (uspi->s_fpg * (c))
  187. #define ufs_cgstart(c) ((uspi)->fs_magic == UFS2_MAGIC ? ufs_cgbase(c) : \
  188. (ufs_cgbase(c) + uspi->s_cgoffset * ((c) & ~uspi->s_cgmask)))
  189. #define ufs_cgsblock(c) (ufs_cgstart(c) + uspi->s_sblkno) /* super blk */
  190. #define ufs_cgcmin(c) (ufs_cgstart(c) + uspi->s_cblkno) /* cg block */
  191. #define ufs_cgimin(c) (ufs_cgstart(c) + uspi->s_iblkno) /* inode blk */
  192. #define ufs_cgdmin(c) (ufs_cgstart(c) + uspi->s_dblkno) /* 1st data */
  193. /*
  194. * Macros for handling inode numbers:
  195. * inode number to file system block offset.
  196. * inode number to cylinder group number.
  197. * inode number to file system block address.
  198. */
  199. #define ufs_inotocg(x) ((x) / uspi->s_ipg)
  200. #define ufs_inotocgoff(x) ((x) % uspi->s_ipg)
  201. #define ufs_inotofsba(x) (((u64)ufs_cgimin(ufs_inotocg(x))) + ufs_inotocgoff(x) / uspi->s_inopf)
  202. #define ufs_inotofsbo(x) ((x) % uspi->s_inopf)
  203. /*
  204. * Compute the cylinder and rotational position of a cyl block addr.
  205. */
  206. #define ufs_cbtocylno(bno) \
  207. ((bno) * uspi->s_nspf / uspi->s_spc)
  208. #define ufs_cbtorpos(bno) \
  209. ((UFS_SB(sb)->s_flags & UFS_CG_SUN) ? \
  210. (((((bno) * uspi->s_nspf % uspi->s_spc) % \
  211. uspi->s_nsect) * \
  212. uspi->s_nrpos) / uspi->s_nsect) \
  213. : \
  214. ((((bno) * uspi->s_nspf % uspi->s_spc / uspi->s_nsect \
  215. * uspi->s_trackskew + (bno) * uspi->s_nspf % uspi->s_spc \
  216. % uspi->s_nsect * uspi->s_interleave) % uspi->s_nsect \
  217. * uspi->s_nrpos) / uspi->s_npsect))
  218. /*
  219. * The following macros optimize certain frequently calculated
  220. * quantities by using shifts and masks in place of divisions
  221. * modulos and multiplications.
  222. */
  223. #define ufs_blkoff(loc) ((loc) & uspi->s_qbmask)
  224. #define ufs_fragoff(loc) ((loc) & uspi->s_qfmask)
  225. #define ufs_lblktosize(blk) ((blk) << uspi->s_bshift)
  226. #define ufs_lblkno(loc) ((loc) >> uspi->s_bshift)
  227. #define ufs_numfrags(loc) ((loc) >> uspi->s_fshift)
  228. #define ufs_blkroundup(size) (((size) + uspi->s_qbmask) & uspi->s_bmask)
  229. #define ufs_fragroundup(size) (((size) + uspi->s_qfmask) & uspi->s_fmask)
  230. #define ufs_fragstoblks(frags) ((frags) >> uspi->s_fpbshift)
  231. #define ufs_blkstofrags(blks) ((blks) << uspi->s_fpbshift)
  232. #define ufs_fragnum(fsb) ((fsb) & uspi->s_fpbmask)
  233. #define ufs_blknum(fsb) ((fsb) & ~uspi->s_fpbmask)
  234. #define UFS_MAXNAMLEN 255
  235. #define UFS_MAXMNTLEN 512
  236. #define UFS2_MAXMNTLEN 468
  237. #define UFS2_MAXVOLLEN 32
  238. #define UFS_MAXCSBUFS 31
  239. #define UFS_LINK_MAX 32000
  240. /*
  241. #define UFS2_NOCSPTRS ((128 / sizeof(void *)) - 4)
  242. */
  243. #define UFS2_NOCSPTRS 28
  244. /*
  245. * UFS_DIR_PAD defines the directory entries boundaries
  246. * (must be a multiple of 4)
  247. */
  248. #define UFS_DIR_PAD 4
  249. #define UFS_DIR_ROUND (UFS_DIR_PAD - 1)
  250. #define UFS_DIR_REC_LEN(name_len) (((name_len) + 1 + 8 + UFS_DIR_ROUND) & ~UFS_DIR_ROUND)
  251. struct ufs_timeval {
  252. __fs32 tv_sec;
  253. __fs32 tv_usec;
  254. };
  255. struct ufs_dir_entry {
  256. __fs32 d_ino; /* inode number of this entry */
  257. __fs16 d_reclen; /* length of this entry */
  258. union {
  259. __fs16 d_namlen; /* actual length of d_name */
  260. struct {
  261. __u8 d_type; /* file type */
  262. __u8 d_namlen; /* length of string in d_name */
  263. } d_44;
  264. } d_u;
  265. __u8 d_name[UFS_MAXNAMLEN + 1]; /* file name */
  266. };
  267. struct ufs_csum {
  268. __fs32 cs_ndir; /* number of directories */
  269. __fs32 cs_nbfree; /* number of free blocks */
  270. __fs32 cs_nifree; /* number of free inodes */
  271. __fs32 cs_nffree; /* number of free frags */
  272. };
  273. struct ufs2_csum_total {
  274. __fs64 cs_ndir; /* number of directories */
  275. __fs64 cs_nbfree; /* number of free blocks */
  276. __fs64 cs_nifree; /* number of free inodes */
  277. __fs64 cs_nffree; /* number of free frags */
  278. __fs64 cs_numclusters; /* number of free clusters */
  279. __fs64 cs_spare[3]; /* future expansion */
  280. };
  281. struct ufs_csum_core {
  282. __u64 cs_ndir; /* number of directories */
  283. __u64 cs_nbfree; /* number of free blocks */
  284. __u64 cs_nifree; /* number of free inodes */
  285. __u64 cs_nffree; /* number of free frags */
  286. __u64 cs_numclusters; /* number of free clusters */
  287. };
  288. /*
  289. * File system flags
  290. */
  291. #define UFS_UNCLEAN 0x01 /* file system not clean at mount (unused) */
  292. #define UFS_DOSOFTDEP 0x02 /* file system using soft dependencies */
  293. #define UFS_NEEDSFSCK 0x04 /* needs sync fsck (FreeBSD compat, unused) */
  294. #define UFS_INDEXDIRS 0x08 /* kernel supports indexed directories */
  295. #define UFS_ACLS 0x10 /* file system has ACLs enabled */
  296. #define UFS_MULTILABEL 0x20 /* file system is MAC multi-label */
  297. #define UFS_FLAGS_UPDATED 0x80 /* flags have been moved to new location */
  298. #if 0
  299. /*
  300. * This is the actual superblock, as it is laid out on the disk.
  301. * Do NOT use this structure, because of sizeof(ufs_super_block) > 512 and
  302. * it may occupy several blocks, use
  303. * struct ufs_super_block_(first,second,third) instead.
  304. */
  305. struct ufs_super_block {
  306. union {
  307. struct {
  308. __fs32 fs_link; /* UNUSED */
  309. } fs_42;
  310. struct {
  311. __fs32 fs_state; /* file system state flag */
  312. } fs_sun;
  313. } fs_u0;
  314. __fs32 fs_rlink; /* UNUSED */
  315. __fs32 fs_sblkno; /* addr of super-block in filesys */
  316. __fs32 fs_cblkno; /* offset of cyl-block in filesys */
  317. __fs32 fs_iblkno; /* offset of inode-blocks in filesys */
  318. __fs32 fs_dblkno; /* offset of first data after cg */
  319. __fs32 fs_cgoffset; /* cylinder group offset in cylinder */
  320. __fs32 fs_cgmask; /* used to calc mod fs_ntrak */
  321. __fs32 fs_time; /* last time written -- time_t */
  322. __fs32 fs_size; /* number of blocks in fs */
  323. __fs32 fs_dsize; /* number of data blocks in fs */
  324. __fs32 fs_ncg; /* number of cylinder groups */
  325. __fs32 fs_bsize; /* size of basic blocks in fs */
  326. __fs32 fs_fsize; /* size of frag blocks in fs */
  327. __fs32 fs_frag; /* number of frags in a block in fs */
  328. /* these are configuration parameters */
  329. __fs32 fs_minfree; /* minimum percentage of free blocks */
  330. __fs32 fs_rotdelay; /* num of ms for optimal next block */
  331. __fs32 fs_rps; /* disk revolutions per second */
  332. /* these fields can be computed from the others */
  333. __fs32 fs_bmask; /* ``blkoff'' calc of blk offsets */
  334. __fs32 fs_fmask; /* ``fragoff'' calc of frag offsets */
  335. __fs32 fs_bshift; /* ``lblkno'' calc of logical blkno */
  336. __fs32 fs_fshift; /* ``numfrags'' calc number of frags */
  337. /* these are configuration parameters */
  338. __fs32 fs_maxcontig; /* max number of contiguous blks */
  339. __fs32 fs_maxbpg; /* max number of blks per cyl group */
  340. /* these fields can be computed from the others */
  341. __fs32 fs_fragshift; /* block to frag shift */
  342. __fs32 fs_fsbtodb; /* fsbtodb and dbtofsb shift constant */
  343. __fs32 fs_sbsize; /* actual size of super block */
  344. __fs32 fs_csmask; /* csum block offset */
  345. __fs32 fs_csshift; /* csum block number */
  346. __fs32 fs_nindir; /* value of NINDIR */
  347. __fs32 fs_inopb; /* value of INOPB */
  348. __fs32 fs_nspf; /* value of NSPF */
  349. /* yet another configuration parameter */
  350. __fs32 fs_optim; /* optimization preference, see below */
  351. /* these fields are derived from the hardware */
  352. union {
  353. struct {
  354. __fs32 fs_npsect; /* # sectors/track including spares */
  355. } fs_sun;
  356. struct {
  357. __fs32 fs_state; /* file system state time stamp */
  358. } fs_sunx86;
  359. } fs_u1;
  360. __fs32 fs_interleave; /* hardware sector interleave */
  361. __fs32 fs_trackskew; /* sector 0 skew, per track */
  362. /* a unique id for this filesystem (currently unused and unmaintained) */
  363. /* In 4.3 Tahoe this space is used by fs_headswitch and fs_trkseek */
  364. /* Neither of those fields is used in the Tahoe code right now but */
  365. /* there could be problems if they are. */
  366. __fs32 fs_id[2]; /* file system id */
  367. /* sizes determined by number of cylinder groups and their sizes */
  368. __fs32 fs_csaddr; /* blk addr of cyl grp summary area */
  369. __fs32 fs_cssize; /* size of cyl grp summary area */
  370. __fs32 fs_cgsize; /* cylinder group size */
  371. /* these fields are derived from the hardware */
  372. __fs32 fs_ntrak; /* tracks per cylinder */
  373. __fs32 fs_nsect; /* sectors per track */
  374. __fs32 fs_spc; /* sectors per cylinder */
  375. /* this comes from the disk driver partitioning */
  376. __fs32 fs_ncyl; /* cylinders in file system */
  377. /* these fields can be computed from the others */
  378. __fs32 fs_cpg; /* cylinders per group */
  379. __fs32 fs_ipg; /* inodes per cylinder group */
  380. __fs32 fs_fpg; /* blocks per group * fs_frag */
  381. /* this data must be re-computed after crashes */
  382. struct ufs_csum fs_cstotal; /* cylinder summary information */
  383. /* these fields are cleared at mount time */
  384. __s8 fs_fmod; /* super block modified flag */
  385. __s8 fs_clean; /* file system is clean flag */
  386. __s8 fs_ronly; /* mounted read-only flag */
  387. __s8 fs_flags;
  388. union {
  389. struct {
  390. __s8 fs_fsmnt[UFS_MAXMNTLEN];/* name mounted on */
  391. __fs32 fs_cgrotor; /* last cg searched */
  392. __fs32 fs_csp[UFS_MAXCSBUFS];/*list of fs_cs info buffers */
  393. __fs32 fs_maxcluster;
  394. __fs32 fs_cpc; /* cyl per cycle in postbl */
  395. __fs16 fs_opostbl[16][8]; /* old rotation block list head */
  396. } fs_u1;
  397. struct {
  398. __s8 fs_fsmnt[UFS2_MAXMNTLEN]; /* name mounted on */
  399. __u8 fs_volname[UFS2_MAXVOLLEN]; /* volume name */
  400. __fs64 fs_swuid; /* system-wide uid */
  401. __fs32 fs_pad; /* due to alignment of fs_swuid */
  402. __fs32 fs_cgrotor; /* last cg searched */
  403. __fs32 fs_ocsp[UFS2_NOCSPTRS]; /*list of fs_cs info buffers */
  404. __fs32 fs_contigdirs;/*# of contiguously allocated dirs */
  405. __fs32 fs_csp; /* cg summary info buffer for fs_cs */
  406. __fs32 fs_maxcluster;
  407. __fs32 fs_active;/* used by snapshots to track fs */
  408. __fs32 fs_old_cpc; /* cyl per cycle in postbl */
  409. __fs32 fs_maxbsize;/*maximum blocking factor permitted */
  410. __fs64 fs_sparecon64[17];/*old rotation block list head */
  411. __fs64 fs_sblockloc; /* byte offset of standard superblock */
  412. struct ufs2_csum_total fs_cstotal;/*cylinder summary information*/
  413. struct ufs_timeval fs_time; /* last time written */
  414. __fs64 fs_size; /* number of blocks in fs */
  415. __fs64 fs_dsize; /* number of data blocks in fs */
  416. __fs64 fs_csaddr; /* blk addr of cyl grp summary area */
  417. __fs64 fs_pendingblocks;/* blocks in process of being freed */
  418. __fs32 fs_pendinginodes;/*inodes in process of being freed */
  419. } fs_u2;
  420. } fs_u11;
  421. union {
  422. struct {
  423. __fs32 fs_sparecon[53];/* reserved for future constants */
  424. __fs32 fs_reclaim;
  425. __fs32 fs_sparecon2[1];
  426. __fs32 fs_state; /* file system state time stamp */
  427. __fs32 fs_qbmask[2]; /* ~usb_bmask */
  428. __fs32 fs_qfmask[2]; /* ~usb_fmask */
  429. } fs_sun;
  430. struct {
  431. __fs32 fs_sparecon[53];/* reserved for future constants */
  432. __fs32 fs_reclaim;
  433. __fs32 fs_sparecon2[1];
  434. __fs32 fs_npsect; /* # sectors/track including spares */
  435. __fs32 fs_qbmask[2]; /* ~usb_bmask */
  436. __fs32 fs_qfmask[2]; /* ~usb_fmask */
  437. } fs_sunx86;
  438. struct {
  439. __fs32 fs_sparecon[50];/* reserved for future constants */
  440. __fs32 fs_contigsumsize;/* size of cluster summary array */
  441. __fs32 fs_maxsymlinklen;/* max length of an internal symlink */
  442. __fs32 fs_inodefmt; /* format of on-disk inodes */
  443. __fs32 fs_maxfilesize[2]; /* max representable file size */
  444. __fs32 fs_qbmask[2]; /* ~usb_bmask */
  445. __fs32 fs_qfmask[2]; /* ~usb_fmask */
  446. __fs32 fs_state; /* file system state time stamp */
  447. } fs_44;
  448. } fs_u2;
  449. __fs32 fs_postblformat; /* format of positional layout tables */
  450. __fs32 fs_nrpos; /* number of rotational positions */
  451. __fs32 fs_postbloff; /* (__s16) rotation block list head */
  452. __fs32 fs_rotbloff; /* (__u8) blocks for each rotation */
  453. __fs32 fs_magic; /* magic number */
  454. __u8 fs_space[1]; /* list of blocks for each rotation */
  455. };
  456. #endif/*struct ufs_super_block*/
  457. /*
  458. * Preference for optimization.
  459. */
  460. #define UFS_OPTTIME 0 /* minimize allocation time */
  461. #define UFS_OPTSPACE 1 /* minimize disk fragmentation */
  462. /*
  463. * Rotational layout table format types
  464. */
  465. #define UFS_42POSTBLFMT -1 /* 4.2BSD rotational table format */
  466. #define UFS_DYNAMICPOSTBLFMT 1 /* dynamic rotational table format */
  467. /*
  468. * Convert cylinder group to base address of its global summary info.
  469. */
  470. #define fs_cs(indx) s_csp[(indx)]
  471. /*
  472. * Cylinder group block for a file system.
  473. *
  474. * Writable fields in the cylinder group are protected by the associated
  475. * super block lock fs->fs_lock.
  476. */
  477. #define CG_MAGIC 0x090255
  478. #define ufs_cg_chkmagic(sb, ucg) \
  479. (fs32_to_cpu((sb), (ucg)->cg_magic) == CG_MAGIC)
  480. /*
  481. * Macros for access to old cylinder group array structures
  482. */
  483. #define ufs_ocg_blktot(sb, ucg) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_btot)
  484. #define ufs_ocg_blks(sb, ucg, cylno) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_b[cylno])
  485. #define ufs_ocg_inosused(sb, ucg) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_iused)
  486. #define ufs_ocg_blksfree(sb, ucg) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_free)
  487. #define ufs_ocg_chkmagic(sb, ucg) \
  488. (fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_magic) == CG_MAGIC)
  489. /*
  490. * size of this structure is 172 B
  491. */
  492. struct ufs_cylinder_group {
  493. __fs32 cg_link; /* linked list of cyl groups */
  494. __fs32 cg_magic; /* magic number */
  495. __fs32 cg_time; /* time last written */
  496. __fs32 cg_cgx; /* we are the cgx'th cylinder group */
  497. __fs16 cg_ncyl; /* number of cyl's this cg */
  498. __fs16 cg_niblk; /* number of inode blocks this cg */
  499. __fs32 cg_ndblk; /* number of data blocks this cg */
  500. struct ufs_csum cg_cs; /* cylinder summary information */
  501. __fs32 cg_rotor; /* position of last used block */
  502. __fs32 cg_frotor; /* position of last used frag */
  503. __fs32 cg_irotor; /* position of last used inode */
  504. __fs32 cg_frsum[UFS_MAXFRAG]; /* counts of available frags */
  505. __fs32 cg_btotoff; /* (__u32) block totals per cylinder */
  506. __fs32 cg_boff; /* (short) free block positions */
  507. __fs32 cg_iusedoff; /* (char) used inode map */
  508. __fs32 cg_freeoff; /* (u_char) free block map */
  509. __fs32 cg_nextfreeoff; /* (u_char) next available space */
  510. union {
  511. struct {
  512. __fs32 cg_clustersumoff; /* (u_int32) counts of avail clusters */
  513. __fs32 cg_clusteroff; /* (u_int8) free cluster map */
  514. __fs32 cg_nclusterblks; /* number of clusters this cg */
  515. __fs32 cg_sparecon[13]; /* reserved for future use */
  516. } cg_44;
  517. struct {
  518. __fs32 cg_clustersumoff;/* (u_int32) counts of avail clusters */
  519. __fs32 cg_clusteroff; /* (u_int8) free cluster map */
  520. __fs32 cg_nclusterblks;/* number of clusters this cg */
  521. __fs32 cg_niblk; /* number of inode blocks this cg */
  522. __fs32 cg_initediblk; /* last initialized inode */
  523. __fs32 cg_sparecon32[3];/* reserved for future use */
  524. __fs64 cg_time; /* time last written */
  525. __fs64 cg_sparecon[3]; /* reserved for future use */
  526. } cg_u2;
  527. __fs32 cg_sparecon[16]; /* reserved for future use */
  528. } cg_u;
  529. __u8 cg_space[1]; /* space for cylinder group maps */
  530. /* actually longer */
  531. };
  532. /* Historic Cylinder group info */
  533. struct ufs_old_cylinder_group {
  534. __fs32 cg_link; /* linked list of cyl groups */
  535. __fs32 cg_rlink; /* for incore cyl groups */
  536. __fs32 cg_time; /* time last written */
  537. __fs32 cg_cgx; /* we are the cgx'th cylinder group */
  538. __fs16 cg_ncyl; /* number of cyl's this cg */
  539. __fs16 cg_niblk; /* number of inode blocks this cg */
  540. __fs32 cg_ndblk; /* number of data blocks this cg */
  541. struct ufs_csum cg_cs; /* cylinder summary information */
  542. __fs32 cg_rotor; /* position of last used block */
  543. __fs32 cg_frotor; /* position of last used frag */
  544. __fs32 cg_irotor; /* position of last used inode */
  545. __fs32 cg_frsum[8]; /* counts of available frags */
  546. __fs32 cg_btot[32]; /* block totals per cylinder */
  547. __fs16 cg_b[32][8]; /* positions of free blocks */
  548. __u8 cg_iused[256]; /* used inode map */
  549. __fs32 cg_magic; /* magic number */
  550. __u8 cg_free[1]; /* free block map */
  551. /* actually longer */
  552. };
  553. /*
  554. * structure of an on-disk inode
  555. */
  556. struct ufs_inode {
  557. __fs16 ui_mode; /* 0x0 */
  558. __fs16 ui_nlink; /* 0x2 */
  559. union {
  560. struct {
  561. __fs16 ui_suid; /* 0x4 */
  562. __fs16 ui_sgid; /* 0x6 */
  563. } oldids;
  564. __fs32 ui_inumber; /* 0x4 lsf: inode number */
  565. __fs32 ui_author; /* 0x4 GNU HURD: author */
  566. } ui_u1;
  567. __fs64 ui_size; /* 0x8 */
  568. struct ufs_timeval ui_atime; /* 0x10 access */
  569. struct ufs_timeval ui_mtime; /* 0x18 modification */
  570. struct ufs_timeval ui_ctime; /* 0x20 creation */
  571. union {
  572. struct {
  573. __fs32 ui_db[UFS_NDADDR];/* 0x28 data blocks */
  574. __fs32 ui_ib[UFS_NINDIR];/* 0x58 indirect blocks */
  575. } ui_addr;
  576. __u8 ui_symlink[4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */
  577. } ui_u2;
  578. __fs32 ui_flags; /* 0x64 immutable, append-only... */
  579. __fs32 ui_blocks; /* 0x68 blocks in use */
  580. __fs32 ui_gen; /* 0x6c like ext2 i_version, for NFS support */
  581. union {
  582. struct {
  583. __fs32 ui_shadow; /* 0x70 shadow inode with security data */
  584. __fs32 ui_uid; /* 0x74 long EFT version of uid */
  585. __fs32 ui_gid; /* 0x78 long EFT version of gid */
  586. __fs32 ui_oeftflag; /* 0x7c reserved */
  587. } ui_sun;
  588. struct {
  589. __fs32 ui_uid; /* 0x70 File owner */
  590. __fs32 ui_gid; /* 0x74 File group */
  591. __fs32 ui_spare[2]; /* 0x78 reserved */
  592. } ui_44;
  593. struct {
  594. __fs32 ui_uid; /* 0x70 */
  595. __fs32 ui_gid; /* 0x74 */
  596. __fs16 ui_modeh; /* 0x78 mode high bits */
  597. __fs16 ui_spare; /* 0x7A unused */
  598. __fs32 ui_trans; /* 0x7c filesystem translator */
  599. } ui_hurd;
  600. } ui_u3;
  601. };
  602. #define UFS_NXADDR 2 /* External addresses in inode. */
  603. struct ufs2_inode {
  604. __fs16 ui_mode; /* 0: IFMT, permissions; see below. */
  605. __fs16 ui_nlink; /* 2: File link count. */
  606. __fs32 ui_uid; /* 4: File owner. */
  607. __fs32 ui_gid; /* 8: File group. */
  608. __fs32 ui_blksize; /* 12: Inode blocksize. */
  609. __fs64 ui_size; /* 16: File byte count. */
  610. __fs64 ui_blocks; /* 24: Bytes actually held. */
  611. __fs64 ui_atime; /* 32: Last access time. */
  612. __fs64 ui_mtime; /* 40: Last modified time. */
  613. __fs64 ui_ctime; /* 48: Last inode change time. */
  614. __fs64 ui_birthtime; /* 56: Inode creation time. */
  615. __fs32 ui_mtimensec; /* 64: Last modified time. */
  616. __fs32 ui_atimensec; /* 68: Last access time. */
  617. __fs32 ui_ctimensec; /* 72: Last inode change time. */
  618. __fs32 ui_birthnsec; /* 76: Inode creation time. */
  619. __fs32 ui_gen; /* 80: Generation number. */
  620. __fs32 ui_kernflags; /* 84: Kernel flags. */
  621. __fs32 ui_flags; /* 88: Status flags (chflags). */
  622. __fs32 ui_extsize; /* 92: External attributes block. */
  623. __fs64 ui_extb[UFS_NXADDR];/* 96: External attributes block. */
  624. union {
  625. struct {
  626. __fs64 ui_db[UFS_NDADDR]; /* 112: Direct disk blocks. */
  627. __fs64 ui_ib[UFS_NINDIR];/* 208: Indirect disk blocks.*/
  628. } ui_addr;
  629. __u8 ui_symlink[2*4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */
  630. } ui_u2;
  631. __fs64 ui_spare[3]; /* 232: Reserved; currently unused */
  632. };
  633. /* FreeBSD has these in sys/stat.h */
  634. /* ui_flags that can be set by a file owner */
  635. #define UFS_UF_SETTABLE 0x0000ffff
  636. #define UFS_UF_NODUMP 0x00000001 /* do not dump */
  637. #define UFS_UF_IMMUTABLE 0x00000002 /* immutable (can't "change") */
  638. #define UFS_UF_APPEND 0x00000004 /* append-only */
  639. #define UFS_UF_OPAQUE 0x00000008 /* directory is opaque (unionfs) */
  640. #define UFS_UF_NOUNLINK 0x00000010 /* can't be removed or renamed */
  641. /* ui_flags that only root can set */
  642. #define UFS_SF_SETTABLE 0xffff0000
  643. #define UFS_SF_ARCHIVED 0x00010000 /* archived */
  644. #define UFS_SF_IMMUTABLE 0x00020000 /* immutable (can't "change") */
  645. #define UFS_SF_APPEND 0x00040000 /* append-only */
  646. #define UFS_SF_NOUNLINK 0x00100000 /* can't be removed or renamed */
  647. /*
  648. * This structure is used for reading disk structures larger
  649. * than the size of fragment.
  650. */
  651. struct ufs_buffer_head {
  652. __u64 fragment; /* first fragment */
  653. __u64 count; /* number of fragments */
  654. struct buffer_head * bh[UFS_MAXFRAG]; /* buffers */
  655. };
  656. struct ufs_cg_private_info {
  657. struct ufs_buffer_head c_ubh;
  658. __u32 c_cgx; /* number of cylidner group */
  659. __u16 c_ncyl; /* number of cyl's this cg */
  660. __u16 c_niblk; /* number of inode blocks this cg */
  661. __u32 c_ndblk; /* number of data blocks this cg */
  662. __u32 c_rotor; /* position of last used block */
  663. __u32 c_frotor; /* position of last used frag */
  664. __u32 c_irotor; /* position of last used inode */
  665. __u32 c_btotoff; /* (__u32) block totals per cylinder */
  666. __u32 c_boff; /* (short) free block positions */
  667. __u32 c_iusedoff; /* (char) used inode map */
  668. __u32 c_freeoff; /* (u_char) free block map */
  669. __u32 c_nextfreeoff; /* (u_char) next available space */
  670. __u32 c_clustersumoff;/* (u_int32) counts of avail clusters */
  671. __u32 c_clusteroff; /* (u_int8) free cluster map */
  672. __u32 c_nclusterblks; /* number of clusters this cg */
  673. };
  674. struct ufs_sb_private_info {
  675. struct ufs_buffer_head s_ubh; /* buffer containing super block */
  676. struct ufs_csum_core cs_total;
  677. __u32 s_sblkno; /* offset of super-blocks in filesys */
  678. __u32 s_cblkno; /* offset of cg-block in filesys */
  679. __u32 s_iblkno; /* offset of inode-blocks in filesys */
  680. __u32 s_dblkno; /* offset of first data after cg */
  681. __u32 s_cgoffset; /* cylinder group offset in cylinder */
  682. __u32 s_cgmask; /* used to calc mod fs_ntrak */
  683. __u64 s_size; /* number of blocks (fragments) in fs */
  684. __u64 s_dsize; /* number of data blocks in fs */
  685. __u32 s_ncg; /* number of cylinder groups */
  686. __u32 s_bsize; /* size of basic blocks */
  687. __u32 s_fsize; /* size of fragments */
  688. __u32 s_fpb; /* fragments per block */
  689. __u32 s_minfree; /* minimum percentage of free blocks */
  690. __u32 s_bmask; /* `blkoff'' calc of blk offsets */
  691. __u32 s_fmask; /* s_fsize mask */
  692. __u32 s_bshift; /* `lblkno'' calc of logical blkno */
  693. __u32 s_fshift; /* s_fsize shift */
  694. __u32 s_fpbshift; /* fragments per block shift */
  695. __u32 s_fsbtodb; /* fsbtodb and dbtofsb shift constant */
  696. __u32 s_sbsize; /* actual size of super block */
  697. __u32 s_csmask; /* csum block offset */
  698. __u32 s_csshift; /* csum block number */
  699. __u32 s_nindir; /* value of NINDIR */
  700. __u32 s_inopb; /* value of INOPB */
  701. __u32 s_nspf; /* value of NSPF */
  702. __u32 s_npsect; /* # sectors/track including spares */
  703. __u32 s_interleave; /* hardware sector interleave */
  704. __u32 s_trackskew; /* sector 0 skew, per track */
  705. __u64 s_csaddr; /* blk addr of cyl grp summary area */
  706. __u32 s_cssize; /* size of cyl grp summary area */
  707. __u32 s_cgsize; /* cylinder group size */
  708. __u32 s_ntrak; /* tracks per cylinder */
  709. __u32 s_nsect; /* sectors per track */
  710. __u32 s_spc; /* sectors per cylinder */
  711. __u32 s_ipg; /* inodes per cylinder group */
  712. __u32 s_fpg; /* fragments per group */
  713. __u32 s_cpc; /* cyl per cycle in postbl */
  714. __s32 s_contigsumsize;/* size of cluster summary array, 44bsd */
  715. __s64 s_qbmask; /* ~usb_bmask */
  716. __s64 s_qfmask; /* ~usb_fmask */
  717. __s32 s_postblformat; /* format of positional layout tables */
  718. __s32 s_nrpos; /* number of rotational positions */
  719. __s32 s_postbloff; /* (__s16) rotation block list head */
  720. __s32 s_rotbloff; /* (__u8) blocks for each rotation */
  721. __u32 s_fpbmask; /* fragments per block mask */
  722. __u32 s_apb; /* address per block */
  723. __u32 s_2apb; /* address per block^2 */
  724. __u32 s_3apb; /* address per block^3 */
  725. __u32 s_apbmask; /* address per block mask */
  726. __u32 s_apbshift; /* address per block shift */
  727. __u32 s_2apbshift; /* address per block shift * 2 */
  728. __u32 s_3apbshift; /* address per block shift * 3 */
  729. __u32 s_nspfshift; /* number of sector per fragment shift */
  730. __u32 s_nspb; /* number of sector per block */
  731. __u32 s_inopf; /* inodes per fragment */
  732. __u32 s_sbbase; /* offset of NeXTstep superblock */
  733. __u32 s_bpf; /* bits per fragment */
  734. __u32 s_bpfshift; /* bits per fragment shift*/
  735. __u32 s_bpfmask; /* bits per fragment mask */
  736. __u32 s_maxsymlinklen;/* upper limit on fast symlinks' size */
  737. __s32 fs_magic; /* filesystem magic */
  738. unsigned int s_dirblksize;
  739. __u64 s_root_blocks;
  740. __u64 s_time_to_space;
  741. __u64 s_space_to_time;
  742. };
  743. /*
  744. * Sizes of this structures are:
  745. * ufs_super_block_first 512
  746. * ufs_super_block_second 512
  747. * ufs_super_block_third 356
  748. */
  749. struct ufs_super_block_first {
  750. union {
  751. struct {
  752. __fs32 fs_link; /* UNUSED */
  753. } fs_42;
  754. struct {
  755. __fs32 fs_state; /* file system state flag */
  756. } fs_sun;
  757. } fs_u0;
  758. __fs32 fs_rlink;
  759. __fs32 fs_sblkno;
  760. __fs32 fs_cblkno;
  761. __fs32 fs_iblkno;
  762. __fs32 fs_dblkno;
  763. __fs32 fs_cgoffset;
  764. __fs32 fs_cgmask;
  765. __fs32 fs_time;
  766. __fs32 fs_size;
  767. __fs32 fs_dsize;
  768. __fs32 fs_ncg;
  769. __fs32 fs_bsize;
  770. __fs32 fs_fsize;
  771. __fs32 fs_frag;
  772. __fs32 fs_minfree;
  773. __fs32 fs_rotdelay;
  774. __fs32 fs_rps;
  775. __fs32 fs_bmask;
  776. __fs32 fs_fmask;
  777. __fs32 fs_bshift;
  778. __fs32 fs_fshift;
  779. __fs32 fs_maxcontig;
  780. __fs32 fs_maxbpg;
  781. __fs32 fs_fragshift;
  782. __fs32 fs_fsbtodb;
  783. __fs32 fs_sbsize;
  784. __fs32 fs_csmask;
  785. __fs32 fs_csshift;
  786. __fs32 fs_nindir;
  787. __fs32 fs_inopb;
  788. __fs32 fs_nspf;
  789. __fs32 fs_optim;
  790. union {
  791. struct {
  792. __fs32 fs_npsect;
  793. } fs_sun;
  794. struct {
  795. __fs32 fs_state;
  796. } fs_sunx86;
  797. } fs_u1;
  798. __fs32 fs_interleave;
  799. __fs32 fs_trackskew;
  800. __fs32 fs_id[2];
  801. __fs32 fs_csaddr;
  802. __fs32 fs_cssize;
  803. __fs32 fs_cgsize;
  804. __fs32 fs_ntrak;
  805. __fs32 fs_nsect;
  806. __fs32 fs_spc;
  807. __fs32 fs_ncyl;
  808. __fs32 fs_cpg;
  809. __fs32 fs_ipg;
  810. __fs32 fs_fpg;
  811. struct ufs_csum fs_cstotal;
  812. __s8 fs_fmod;
  813. __s8 fs_clean;
  814. __s8 fs_ronly;
  815. __s8 fs_flags;
  816. __s8 fs_fsmnt[UFS_MAXMNTLEN - 212];
  817. };
  818. struct ufs_super_block_second {
  819. union {
  820. struct {
  821. __s8 fs_fsmnt[212];
  822. __fs32 fs_cgrotor;
  823. __fs32 fs_csp[UFS_MAXCSBUFS];
  824. __fs32 fs_maxcluster;
  825. __fs32 fs_cpc;
  826. __fs16 fs_opostbl[82];
  827. } fs_u1;
  828. struct {
  829. __s8 fs_fsmnt[UFS2_MAXMNTLEN - UFS_MAXMNTLEN + 212];
  830. __u8 fs_volname[UFS2_MAXVOLLEN];
  831. __fs64 fs_swuid;
  832. __fs32 fs_pad;
  833. __fs32 fs_cgrotor;
  834. __fs32 fs_ocsp[UFS2_NOCSPTRS];
  835. __fs32 fs_contigdirs;
  836. __fs32 fs_csp;
  837. __fs32 fs_maxcluster;
  838. __fs32 fs_active;
  839. __fs32 fs_old_cpc;
  840. __fs32 fs_maxbsize;
  841. __fs64 fs_sparecon64[17];
  842. __fs64 fs_sblockloc;
  843. __fs64 cs_ndir;
  844. __fs64 cs_nbfree;
  845. } fs_u2;
  846. } fs_un;
  847. };
  848. struct ufs_super_block_third {
  849. union {
  850. struct {
  851. __fs16 fs_opostbl[46];
  852. } fs_u1;
  853. struct {
  854. __fs64 cs_nifree; /* number of free inodes */
  855. __fs64 cs_nffree; /* number of free frags */
  856. __fs64 cs_numclusters; /* number of free clusters */
  857. __fs64 cs_spare[3]; /* future expansion */
  858. struct ufs_timeval fs_time; /* last time written */
  859. __fs64 fs_size; /* number of blocks in fs */
  860. __fs64 fs_dsize; /* number of data blocks in fs */
  861. __fs64 fs_csaddr; /* blk addr of cyl grp summary area */
  862. __fs64 fs_pendingblocks;/* blocks in process of being freed */
  863. __fs32 fs_pendinginodes;/*inodes in process of being freed */
  864. } __attribute__ ((packed)) fs_u2;
  865. } fs_un1;
  866. union {
  867. struct {
  868. __fs32 fs_sparecon[53];/* reserved for future constants */
  869. __fs32 fs_reclaim;
  870. __fs32 fs_sparecon2[1];
  871. __fs32 fs_state; /* file system state time stamp */
  872. __fs32 fs_qbmask[2]; /* ~usb_bmask */
  873. __fs32 fs_qfmask[2]; /* ~usb_fmask */
  874. } fs_sun;
  875. struct {
  876. __fs32 fs_sparecon[53];/* reserved for future constants */
  877. __fs32 fs_reclaim;
  878. __fs32 fs_sparecon2[1];
  879. __fs32 fs_npsect; /* # sectors/track including spares */
  880. __fs32 fs_qbmask[2]; /* ~usb_bmask */
  881. __fs32 fs_qfmask[2]; /* ~usb_fmask */
  882. } fs_sunx86;
  883. struct {
  884. __fs32 fs_sparecon[50];/* reserved for future constants */
  885. __fs32 fs_contigsumsize;/* size of cluster summary array */
  886. __fs32 fs_maxsymlinklen;/* max length of an internal symlink */
  887. __fs32 fs_inodefmt; /* format of on-disk inodes */
  888. __fs32 fs_maxfilesize[2]; /* max representable file size */
  889. __fs32 fs_qbmask[2]; /* ~usb_bmask */
  890. __fs32 fs_qfmask[2]; /* ~usb_fmask */
  891. __fs32 fs_state; /* file system state time stamp */
  892. } fs_44;
  893. } fs_un2;
  894. __fs32 fs_postblformat;
  895. __fs32 fs_nrpos;
  896. __fs32 fs_postbloff;
  897. __fs32 fs_rotbloff;
  898. __fs32 fs_magic;
  899. __u8 fs_space[1];
  900. };
  901. #endif /* __LINUX_UFS_FS_H */