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Diffstat (limited to 'include/linux/ufs_fs.h')
| -rw-r--r-- | include/linux/ufs_fs.h | 953 |
1 files changed, 0 insertions, 953 deletions
diff --git a/include/linux/ufs_fs.h b/include/linux/ufs_fs.h deleted file mode 100644 index 10b854d3561..00000000000 --- a/include/linux/ufs_fs.h +++ /dev/null @@ -1,953 +0,0 @@ -/* - * linux/include/linux/ufs_fs.h - * - * Copyright (C) 1996 - * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu) - * Laboratory for Computer Science Research Computing Facility - * Rutgers, The State University of New Jersey - * - * Clean swab support by Fare <fare@tunes.org> - * just hope no one is using NNUUXXI on __?64 structure elements - * 64-bit clean thanks to Maciej W. Rozycki <macro@ds2.pg.gda.pl> - * - * 4.4BSD (FreeBSD) support added on February 1st 1998 by - * Niels Kristian Bech Jensen <nkbj@image.dk> partially based - * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>. - * - * NeXTstep support added on February 5th 1998 by - * Niels Kristian Bech Jensen <nkbj@image.dk>. - * - * Write support by Daniel Pirkl <daniel.pirkl@email.cz> - * - * HP/UX hfs filesystem support added by - * Martin K. Petersen <mkp@mkp.net>, August 1999 - * - * UFS2 (of FreeBSD 5.x) support added by - * Niraj Kumar <niraj17@iitbombay.org> , Jan 2004 - * - */ - -#ifndef __LINUX_UFS_FS_H -#define __LINUX_UFS_FS_H - -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/stat.h> -#include <linux/fs.h> - -#ifndef __KERNEL__ -typedef __u64 __fs64; -typedef __u32 __fs32; -typedef __u16 __fs16; -#else -#include <asm/div64.h> -typedef __u64 __bitwise __fs64; -typedef __u32 __bitwise __fs32; -typedef __u16 __bitwise __fs16; -#endif - -#define UFS_BBLOCK 0 -#define UFS_BBSIZE 8192 -#define UFS_SBLOCK 8192 -#define UFS_SBSIZE 8192 - -#define UFS_SECTOR_SIZE 512 -#define UFS_SECTOR_BITS 9 -#define UFS_MAGIC 0x00011954 -#define UFS2_MAGIC 0x19540119 -#define UFS_CIGAM 0x54190100 /* byteswapped MAGIC */ - -/* Copied from FreeBSD */ -/* - * Each disk drive contains some number of filesystems. - * A filesystem consists of a number of cylinder groups. - * Each cylinder group has inodes and data. - * - * A filesystem is described by its super-block, which in turn - * describes the cylinder groups. The super-block is critical - * data and is replicated in each cylinder group to protect against - * catastrophic loss. This is done at `newfs' time and the critical - * super-block data does not change, so the copies need not be - * referenced further unless disaster strikes. - * - * For filesystem fs, the offsets of the various blocks of interest - * are given in the super block as: - * [fs->fs_sblkno] Super-block - * [fs->fs_cblkno] Cylinder group block - * [fs->fs_iblkno] Inode blocks - * [fs->fs_dblkno] Data blocks - * The beginning of cylinder group cg in fs, is given by - * the ``cgbase(fs, cg)'' macro. - * - * Depending on the architecture and the media, the superblock may - * reside in any one of four places. For tiny media where every block - * counts, it is placed at the very front of the partition. Historically, - * UFS1 placed it 8K from the front to leave room for the disk label and - * a small bootstrap. For UFS2 it got moved to 64K from the front to leave - * room for the disk label and a bigger bootstrap, and for really piggy - * systems we check at 256K from the front if the first three fail. In - * all cases the size of the superblock will be SBLOCKSIZE. All values are - * given in byte-offset form, so they do not imply a sector size. The - * SBLOCKSEARCH specifies the order in which the locations should be searched. - */ -#define SBLOCK_FLOPPY 0 -#define SBLOCK_UFS1 8192 -#define SBLOCK_UFS2 65536 -#define SBLOCK_PIGGY 262144 -#define SBLOCKSIZE 8192 -#define SBLOCKSEARCH \ - { SBLOCK_UFS2, SBLOCK_UFS1, SBLOCK_FLOPPY, SBLOCK_PIGGY, -1 } - - -/* HP specific MAGIC values */ - -#define UFS_MAGIC_LFN 0x00095014 /* fs supports filenames > 14 chars */ -#define UFS_CIGAM_LFN 0x14500900 /* srahc 41 < semanelif stroppus sf */ - -#define UFS_MAGIC_SEC 0x00612195 /* B1 security fs */ -#define UFS_CIGAM_SEC 0x95216100 - -#define UFS_MAGIC_FEA 0x00195612 /* fs_featurebits supported */ -#define UFS_CIGAM_FEA 0x12561900 - -#define UFS_MAGIC_4GB 0x05231994 /* fs > 4 GB && fs_featurebits */ -#define UFS_CIGAM_4GB 0x94192305 - -/* Seems somebody at HP goofed here. B1 and lfs are both 0x2 !?! */ -#define UFS_FSF_LFN 0x00000001 /* long file names */ -#define UFS_FSF_B1 0x00000002 /* B1 security */ -#define UFS_FSF_LFS 0x00000002 /* large files */ -#define UFS_FSF_LUID 0x00000004 /* large UIDs */ - -/* End of HP stuff */ - - -#define UFS_BSIZE 8192 -#define UFS_MINBSIZE 4096 -#define UFS_FSIZE 1024 -#define UFS_MAXFRAG (UFS_BSIZE / UFS_FSIZE) - -#define UFS_NDADDR 12 -#define UFS_NINDIR 3 - -#define UFS_IND_BLOCK (UFS_NDADDR + 0) -#define UFS_DIND_BLOCK (UFS_NDADDR + 1) -#define UFS_TIND_BLOCK (UFS_NDADDR + 2) - -#define UFS_NDIR_FRAGMENT (UFS_NDADDR << uspi->s_fpbshift) -#define UFS_IND_FRAGMENT (UFS_IND_BLOCK << uspi->s_fpbshift) -#define UFS_DIND_FRAGMENT (UFS_DIND_BLOCK << uspi->s_fpbshift) -#define UFS_TIND_FRAGMENT (UFS_TIND_BLOCK << uspi->s_fpbshift) - -#define UFS_ROOTINO 2 -#define UFS_FIRST_INO (UFS_ROOTINO + 1) - -#define UFS_USEEFT ((__u16)65535) - -#define UFS_FSOK 0x7c269d38 -#define UFS_FSACTIVE ((__s8)0x00) -#define UFS_FSCLEAN ((__s8)0x01) -#define UFS_FSSTABLE ((__s8)0x02) -#define UFS_FSOSF1 ((__s8)0x03) /* is this correct for DEC OSF/1? */ -#define UFS_FSBAD ((__s8)0xff) - -/* From here to next blank line, s_flags for ufs_sb_info */ -/* directory entry encoding */ -#define UFS_DE_MASK 0x00000010 /* mask for the following */ -#define UFS_DE_OLD 0x00000000 -#define UFS_DE_44BSD 0x00000010 -/* uid encoding */ -#define UFS_UID_MASK 0x00000060 /* mask for the following */ -#define UFS_UID_OLD 0x00000000 -#define UFS_UID_44BSD 0x00000020 -#define UFS_UID_EFT 0x00000040 -/* superblock state encoding */ -#define UFS_ST_MASK 0x00000700 /* mask for the following */ -#define UFS_ST_OLD 0x00000000 -#define UFS_ST_44BSD 0x00000100 -#define UFS_ST_SUN 0x00000200 /* Solaris */ -#define UFS_ST_SUNOS 0x00000300 -#define UFS_ST_SUNx86 0x00000400 /* Solaris x86 */ -/*cylinder group encoding */ -#define UFS_CG_MASK 0x00003000 /* mask for the following */ -#define UFS_CG_OLD 0x00000000 -#define UFS_CG_44BSD 0x00002000 -#define UFS_CG_SUN 0x00001000 -/* filesystem type encoding */ -#define UFS_TYPE_MASK 0x00010000 /* mask for the following */ -#define UFS_TYPE_UFS1 0x00000000 -#define UFS_TYPE_UFS2 0x00010000 - - -/* fs_inodefmt options */ -#define UFS_42INODEFMT -1 -#define UFS_44INODEFMT 2 - -/* - * MINFREE gives the minimum acceptable percentage of file system - * blocks which may be free. If the freelist drops below this level - * only the superuser may continue to allocate blocks. This may - * be set to 0 if no reserve of free blocks is deemed necessary, - * however throughput drops by fifty percent if the file system - * is run at between 95% and 100% full; thus the minimum default - * value of fs_minfree is 5%. However, to get good clustering - * performance, 10% is a better choice. hence we use 10% as our - * default value. With 10% free space, fragmentation is not a - * problem, so we choose to optimize for time. - */ -#define UFS_MINFREE 5 -#define UFS_DEFAULTOPT UFS_OPTTIME - -/* - * Turn file system block numbers into disk block addresses. - * This maps file system blocks to device size blocks. - */ -#define ufs_fsbtodb(uspi, b) ((b) << (uspi)->s_fsbtodb) -#define ufs_dbtofsb(uspi, b) ((b) >> (uspi)->s_fsbtodb) - -/* - * Cylinder group macros to locate things in cylinder groups. - * They calc file system addresses of cylinder group data structures. - */ -#define ufs_cgbase(c) (uspi->s_fpg * (c)) -#define ufs_cgstart(c) ((uspi)->fs_magic == UFS2_MAGIC ? ufs_cgbase(c) : \ - (ufs_cgbase(c) + uspi->s_cgoffset * ((c) & ~uspi->s_cgmask))) -#define ufs_cgsblock(c) (ufs_cgstart(c) + uspi->s_sblkno) /* super blk */ -#define ufs_cgcmin(c) (ufs_cgstart(c) + uspi->s_cblkno) /* cg block */ -#define ufs_cgimin(c) (ufs_cgstart(c) + uspi->s_iblkno) /* inode blk */ -#define ufs_cgdmin(c) (ufs_cgstart(c) + uspi->s_dblkno) /* 1st data */ - -/* - * Macros for handling inode numbers: - * inode number to file system block offset. - * inode number to cylinder group number. - * inode number to file system block address. - */ -#define ufs_inotocg(x) ((x) / uspi->s_ipg) -#define ufs_inotocgoff(x) ((x) % uspi->s_ipg) -#define ufs_inotofsba(x) (((u64)ufs_cgimin(ufs_inotocg(x))) + ufs_inotocgoff(x) / uspi->s_inopf) -#define ufs_inotofsbo(x) ((x) % uspi->s_inopf) - -/* - * Compute the cylinder and rotational position of a cyl block addr. - */ -#define ufs_cbtocylno(bno) \ - ((bno) * uspi->s_nspf / uspi->s_spc) -#define ufs_cbtorpos(bno) \ - ((((bno) * uspi->s_nspf % uspi->s_spc / uspi->s_nsect \ - * uspi->s_trackskew + (bno) * uspi->s_nspf % uspi->s_spc \ - % uspi->s_nsect * uspi->s_interleave) % uspi->s_nsect \ - * uspi->s_nrpos) / uspi->s_npsect) - -/* - * The following macros optimize certain frequently calculated - * quantities by using shifts and masks in place of divisions - * modulos and multiplications. - */ -#define ufs_blkoff(loc) ((loc) & uspi->s_qbmask) -#define ufs_fragoff(loc) ((loc) & uspi->s_qfmask) -#define ufs_lblktosize(blk) ((blk) << uspi->s_bshift) -#define ufs_lblkno(loc) ((loc) >> uspi->s_bshift) -#define ufs_numfrags(loc) ((loc) >> uspi->s_fshift) -#define ufs_blkroundup(size) (((size) + uspi->s_qbmask) & uspi->s_bmask) -#define ufs_fragroundup(size) (((size) + uspi->s_qfmask) & uspi->s_fmask) -#define ufs_fragstoblks(frags) ((frags) >> uspi->s_fpbshift) -#define ufs_blkstofrags(blks) ((blks) << uspi->s_fpbshift) -#define ufs_fragnum(fsb) ((fsb) & uspi->s_fpbmask) -#define ufs_blknum(fsb) ((fsb) & ~uspi->s_fpbmask) - -#define UFS_MAXNAMLEN 255 -#define UFS_MAXMNTLEN 512 -#define UFS2_MAXMNTLEN 468 -#define UFS2_MAXVOLLEN 32 -#define UFS_MAXCSBUFS 31 -#define UFS_LINK_MAX 32000 -/* -#define UFS2_NOCSPTRS ((128 / sizeof(void *)) - 4) -*/ -#define UFS2_NOCSPTRS 28 - -/* - * UFS_DIR_PAD defines the directory entries boundaries - * (must be a multiple of 4) - */ -#define UFS_DIR_PAD 4 -#define UFS_DIR_ROUND (UFS_DIR_PAD - 1) -#define UFS_DIR_REC_LEN(name_len) (((name_len) + 1 + 8 + UFS_DIR_ROUND) & ~UFS_DIR_ROUND) - -struct ufs_timeval { - __fs32 tv_sec; - __fs32 tv_usec; -}; - -struct ufs_dir_entry { - __fs32 d_ino; /* inode number of this entry */ - __fs16 d_reclen; /* length of this entry */ - union { - __fs16 d_namlen; /* actual length of d_name */ - struct { - __u8 d_type; /* file type */ - __u8 d_namlen; /* length of string in d_name */ - } d_44; - } d_u; - __u8 d_name[UFS_MAXNAMLEN + 1]; /* file name */ -}; - -struct ufs_csum { - __fs32 cs_ndir; /* number of directories */ - __fs32 cs_nbfree; /* number of free blocks */ - __fs32 cs_nifree; /* number of free inodes */ - __fs32 cs_nffree; /* number of free frags */ -}; -struct ufs2_csum_total { - __fs64 cs_ndir; /* number of directories */ - __fs64 cs_nbfree; /* number of free blocks */ - __fs64 cs_nifree; /* number of free inodes */ - __fs64 cs_nffree; /* number of free frags */ - __fs64 cs_numclusters; /* number of free clusters */ - __fs64 cs_spare[3]; /* future expansion */ -}; - -struct ufs_csum_core { - __u64 cs_ndir; /* number of directories */ - __u64 cs_nbfree; /* number of free blocks */ - __u64 cs_nifree; /* number of free inodes */ - __u64 cs_nffree; /* number of free frags */ - __u64 cs_numclusters; /* number of free clusters */ -}; - -/* - * File system flags - */ -#define UFS_UNCLEAN 0x01 /* file system not clean at mount (unused) */ -#define UFS_DOSOFTDEP 0x02 /* file system using soft dependencies */ -#define UFS_NEEDSFSCK 0x04 /* needs sync fsck (FreeBSD compat, unused) */ -#define UFS_INDEXDIRS 0x08 /* kernel supports indexed directories */ -#define UFS_ACLS 0x10 /* file system has ACLs enabled */ -#define UFS_MULTILABEL 0x20 /* file system is MAC multi-label */ -#define UFS_FLAGS_UPDATED 0x80 /* flags have been moved to new location */ - -#if 0 -/* - * This is the actual superblock, as it is laid out on the disk. - * Do NOT use this structure, because of sizeof(ufs_super_block) > 512 and - * it may occupy several blocks, use - * struct ufs_super_block_(first,second,third) instead. - */ -struct ufs_super_block { - union { - struct { - __fs32 fs_link; /* UNUSED */ - } fs_42; - struct { - __fs32 fs_state; /* file system state flag */ - } fs_sun; - } fs_u0; - __fs32 fs_rlink; /* UNUSED */ - __fs32 fs_sblkno; /* addr of super-block in filesys */ - __fs32 fs_cblkno; /* offset of cyl-block in filesys */ - __fs32 fs_iblkno; /* offset of inode-blocks in filesys */ - __fs32 fs_dblkno; /* offset of first data after cg */ - __fs32 fs_cgoffset; /* cylinder group offset in cylinder */ - __fs32 fs_cgmask; /* used to calc mod fs_ntrak */ - __fs32 fs_time; /* last time written -- time_t */ - __fs32 fs_size; /* number of blocks in fs */ - __fs32 fs_dsize; /* number of data blocks in fs */ - __fs32 fs_ncg; /* number of cylinder groups */ - __fs32 fs_bsize; /* size of basic blocks in fs */ - __fs32 fs_fsize; /* size of frag blocks in fs */ - __fs32 fs_frag; /* number of frags in a block in fs */ -/* these are configuration parameters */ - __fs32 fs_minfree; /* minimum percentage of free blocks */ - __fs32 fs_rotdelay; /* num of ms for optimal next block */ - __fs32 fs_rps; /* disk revolutions per second */ -/* these fields can be computed from the others */ - __fs32 fs_bmask; /* ``blkoff'' calc of blk offsets */ - __fs32 fs_fmask; /* ``fragoff'' calc of frag offsets */ - __fs32 fs_bshift; /* ``lblkno'' calc of logical blkno */ - __fs32 fs_fshift; /* ``numfrags'' calc number of frags */ -/* these are configuration parameters */ - __fs32 fs_maxcontig; /* max number of contiguous blks */ - __fs32 fs_maxbpg; /* max number of blks per cyl group */ -/* these fields can be computed from the others */ - __fs32 fs_fragshift; /* block to frag shift */ - __fs32 fs_fsbtodb; /* fsbtodb and dbtofsb shift constant */ - __fs32 fs_sbsize; /* actual size of super block */ - __fs32 fs_csmask; /* csum block offset */ - __fs32 fs_csshift; /* csum block number */ - __fs32 fs_nindir; /* value of NINDIR */ - __fs32 fs_inopb; /* value of INOPB */ - __fs32 fs_nspf; /* value of NSPF */ -/* yet another configuration parameter */ - __fs32 fs_optim; /* optimization preference, see below */ -/* these fields are derived from the hardware */ - union { - struct { - __fs32 fs_npsect; /* # sectors/track including spares */ - } fs_sun; - struct { - __fs32 fs_state; /* file system state time stamp */ - } fs_sunx86; - } fs_u1; - __fs32 fs_interleave; /* hardware sector interleave */ - __fs32 fs_trackskew; /* sector 0 skew, per track */ -/* a unique id for this filesystem (currently unused and unmaintained) */ -/* In 4.3 Tahoe this space is used by fs_headswitch and fs_trkseek */ -/* Neither of those fields is used in the Tahoe code right now but */ -/* there could be problems if they are. */ - __fs32 fs_id[2]; /* file system id */ -/* sizes determined by number of cylinder groups and their sizes */ - __fs32 fs_csaddr; /* blk addr of cyl grp summary area */ - __fs32 fs_cssize; /* size of cyl grp summary area */ - __fs32 fs_cgsize; /* cylinder group size */ -/* these fields are derived from the hardware */ - __fs32 fs_ntrak; /* tracks per cylinder */ - __fs32 fs_nsect; /* sectors per track */ - __fs32 fs_spc; /* sectors per cylinder */ -/* this comes from the disk driver partitioning */ - __fs32 fs_ncyl; /* cylinders in file system */ -/* these fields can be computed from the others */ - __fs32 fs_cpg; /* cylinders per group */ - __fs32 fs_ipg; /* inodes per cylinder group */ - __fs32 fs_fpg; /* blocks per group * fs_frag */ -/* this data must be re-computed after crashes */ - struct ufs_csum fs_cstotal; /* cylinder summary information */ -/* these fields are cleared at mount time */ - __s8 fs_fmod; /* super block modified flag */ - __s8 fs_clean; /* file system is clean flag */ - __s8 fs_ronly; /* mounted read-only flag */ - __s8 fs_flags; - union { - struct { - __s8 fs_fsmnt[UFS_MAXMNTLEN];/* name mounted on */ - __fs32 fs_cgrotor; /* last cg searched */ - __fs32 fs_csp[UFS_MAXCSBUFS];/*list of fs_cs info buffers */ - __fs32 fs_maxcluster; - __fs32 fs_cpc; /* cyl per cycle in postbl */ - __fs16 fs_opostbl[16][8]; /* old rotation block list head */ - } fs_u1; - struct { - __s8 fs_fsmnt[UFS2_MAXMNTLEN]; /* name mounted on */ - __u8 fs_volname[UFS2_MAXVOLLEN]; /* volume name */ - __fs64 fs_swuid; /* system-wide uid */ - __fs32 fs_pad; /* due to alignment of fs_swuid */ - __fs32 fs_cgrotor; /* last cg searched */ - __fs32 fs_ocsp[UFS2_NOCSPTRS]; /*list of fs_cs info buffers */ - __fs32 fs_contigdirs;/*# of contiguously allocated dirs */ - __fs32 fs_csp; /* cg summary info buffer for fs_cs */ - __fs32 fs_maxcluster; - __fs32 fs_active;/* used by snapshots to track fs */ - __fs32 fs_old_cpc; /* cyl per cycle in postbl */ - __fs32 fs_maxbsize;/*maximum blocking factor permitted */ - __fs64 fs_sparecon64[17];/*old rotation block list head */ - __fs64 fs_sblockloc; /* byte offset of standard superblock */ - struct ufs2_csum_total fs_cstotal;/*cylinder summary information*/ - struct ufs_timeval fs_time; /* last time written */ - __fs64 fs_size; /* number of blocks in fs */ - __fs64 fs_dsize; /* number of data blocks in fs */ - __fs64 fs_csaddr; /* blk addr of cyl grp summary area */ - __fs64 fs_pendingblocks;/* blocks in process of being freed */ - __fs32 fs_pendinginodes;/*inodes in process of being freed */ - } fs_u2; - } fs_u11; - union { - struct { - __fs32 fs_sparecon[53];/* reserved for future constants */ - __fs32 fs_reclaim; - __fs32 fs_sparecon2[1]; - __fs32 fs_state; /* file system state time stamp */ - __fs32 fs_qbmask[2]; /* ~usb_bmask */ - __fs32 fs_qfmask[2]; /* ~usb_fmask */ - } fs_sun; - struct { - __fs32 fs_sparecon[53];/* reserved for future constants */ - __fs32 fs_reclaim; - __fs32 fs_sparecon2[1]; - __fs32 fs_npsect; /* # sectors/track including spares */ - __fs32 fs_qbmask[2]; /* ~usb_bmask */ - __fs32 fs_qfmask[2]; /* ~usb_fmask */ - } fs_sunx86; - struct { - __fs32 fs_sparecon[50];/* reserved for future constants */ - __fs32 fs_contigsumsize;/* size of cluster summary array */ - __fs32 fs_maxsymlinklen;/* max length of an internal symlink */ - __fs32 fs_inodefmt; /* format of on-disk inodes */ - __fs32 fs_maxfilesize[2]; /* max representable file size */ - __fs32 fs_qbmask[2]; /* ~usb_bmask */ - __fs32 fs_qfmask[2]; /* ~usb_fmask */ - __fs32 fs_state; /* file system state time stamp */ - } fs_44; - } fs_u2; - __fs32 fs_postblformat; /* format of positional layout tables */ - __fs32 fs_nrpos; /* number of rotational positions */ - __fs32 fs_postbloff; /* (__s16) rotation block list head */ - __fs32 fs_rotbloff; /* (__u8) blocks for each rotation */ - __fs32 fs_magic; /* magic number */ - __u8 fs_space[1]; /* list of blocks for each rotation */ -}; -#endif/*struct ufs_super_block*/ - -/* - * Preference for optimization. - */ -#define UFS_OPTTIME 0 /* minimize allocation time */ -#define UFS_OPTSPACE 1 /* minimize disk fragmentation */ - -/* - * Rotational layout table format types - */ -#define UFS_42POSTBLFMT -1 /* 4.2BSD rotational table format */ -#define UFS_DYNAMICPOSTBLFMT 1 /* dynamic rotational table format */ - -/* - * Convert cylinder group to base address of its global summary info. - */ -#define fs_cs(indx) s_csp[(indx)] - -/* - * Cylinder group block for a file system. - * - * Writable fields in the cylinder group are protected by the associated - * super block lock fs->fs_lock. - */ -#define CG_MAGIC 0x090255 -#define ufs_cg_chkmagic(sb, ucg) \ - (fs32_to_cpu((sb), (ucg)->cg_magic) == CG_MAGIC) -/* - * Macros for access to old cylinder group array structures - */ -#define ufs_ocg_blktot(sb, ucg) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_btot) -#define ufs_ocg_blks(sb, ucg, cylno) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_b[cylno]) -#define ufs_ocg_inosused(sb, ucg) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_iused) -#define ufs_ocg_blksfree(sb, ucg) fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_free) -#define ufs_ocg_chkmagic(sb, ucg) \ - (fs32_to_cpu((sb), ((struct ufs_old_cylinder_group *)(ucg))->cg_magic) == CG_MAGIC) - -/* - * size of this structure is 172 B - */ -struct ufs_cylinder_group { - __fs32 cg_link; /* linked list of cyl groups */ - __fs32 cg_magic; /* magic number */ - __fs32 cg_time; /* time last written */ - __fs32 cg_cgx; /* we are the cgx'th cylinder group */ - __fs16 cg_ncyl; /* number of cyl's this cg */ - __fs16 cg_niblk; /* number of inode blocks this cg */ - __fs32 cg_ndblk; /* number of data blocks this cg */ - struct ufs_csum cg_cs; /* cylinder summary information */ - __fs32 cg_rotor; /* position of last used block */ - __fs32 cg_frotor; /* position of last used frag */ - __fs32 cg_irotor; /* position of last used inode */ - __fs32 cg_frsum[UFS_MAXFRAG]; /* counts of available frags */ - __fs32 cg_btotoff; /* (__u32) block totals per cylinder */ - __fs32 cg_boff; /* (short) free block positions */ - __fs32 cg_iusedoff; /* (char) used inode map */ - __fs32 cg_freeoff; /* (u_char) free block map */ - __fs32 cg_nextfreeoff; /* (u_char) next available space */ - union { - struct { - __fs32 cg_clustersumoff; /* (u_int32) counts of avail clusters */ - __fs32 cg_clusteroff; /* (u_int8) free cluster map */ - __fs32 cg_nclusterblks; /* number of clusters this cg */ - __fs32 cg_sparecon[13]; /* reserved for future use */ - } cg_44; - struct { - __fs32 cg_clustersumoff;/* (u_int32) counts of avail clusters */ - __fs32 cg_clusteroff; /* (u_int8) free cluster map */ - __fs32 cg_nclusterblks;/* number of clusters this cg */ - __fs32 cg_niblk; /* number of inode blocks this cg */ - __fs32 cg_initediblk; /* last initialized inode */ - __fs32 cg_sparecon32[3];/* reserved for future use */ - __fs64 cg_time; /* time last written */ - __fs64 cg_sparecon[3]; /* reserved for future use */ - } cg_u2; - __fs32 cg_sparecon[16]; /* reserved for future use */ - } cg_u; - __u8 cg_space[1]; /* space for cylinder group maps */ -/* actually longer */ -}; - -/* Historic Cylinder group info */ -struct ufs_old_cylinder_group { - __fs32 cg_link; /* linked list of cyl groups */ - __fs32 cg_rlink; /* for incore cyl groups */ - __fs32 cg_time; /* time last written */ - __fs32 cg_cgx; /* we are the cgx'th cylinder group */ - __fs16 cg_ncyl; /* number of cyl's this cg */ - __fs16 cg_niblk; /* number of inode blocks this cg */ - __fs32 cg_ndblk; /* number of data blocks this cg */ - struct ufs_csum cg_cs; /* cylinder summary information */ - __fs32 cg_rotor; /* position of last used block */ - __fs32 cg_frotor; /* position of last used frag */ - __fs32 cg_irotor; /* position of last used inode */ - __fs32 cg_frsum[8]; /* counts of available frags */ - __fs32 cg_btot[32]; /* block totals per cylinder */ - __fs16 cg_b[32][8]; /* positions of free blocks */ - __u8 cg_iused[256]; /* used inode map */ - __fs32 cg_magic; /* magic number */ - __u8 cg_free[1]; /* free block map */ -/* actually longer */ -}; - -/* - * structure of an on-disk inode - */ -struct ufs_inode { - __fs16 ui_mode; /* 0x0 */ - __fs16 ui_nlink; /* 0x2 */ - union { - struct { - __fs16 ui_suid; /* 0x4 */ - __fs16 ui_sgid; /* 0x6 */ - } oldids; - __fs32 ui_inumber; /* 0x4 lsf: inode number */ - __fs32 ui_author; /* 0x4 GNU HURD: author */ - } ui_u1; - __fs64 ui_size; /* 0x8 */ - struct ufs_timeval ui_atime; /* 0x10 access */ - struct ufs_timeval ui_mtime; /* 0x18 modification */ - struct ufs_timeval ui_ctime; /* 0x20 creation */ - union { - struct { - __fs32 ui_db[UFS_NDADDR];/* 0x28 data blocks */ - __fs32 ui_ib[UFS_NINDIR];/* 0x58 indirect blocks */ - } ui_addr; - __u8 ui_symlink[4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */ - } ui_u2; - __fs32 ui_flags; /* 0x64 immutable, append-only... */ - __fs32 ui_blocks; /* 0x68 blocks in use */ - __fs32 ui_gen; /* 0x6c like ext2 i_version, for NFS support */ - union { - struct { - __fs32 ui_shadow; /* 0x70 shadow inode with security data */ - __fs32 ui_uid; /* 0x74 long EFT version of uid */ - __fs32 ui_gid; /* 0x78 long EFT version of gid */ - __fs32 ui_oeftflag; /* 0x7c reserved */ - } ui_sun; - struct { - __fs32 ui_uid; /* 0x70 File owner */ - __fs32 ui_gid; /* 0x74 File group */ - __fs32 ui_spare[2]; /* 0x78 reserved */ - } ui_44; - struct { - __fs32 ui_uid; /* 0x70 */ - __fs32 ui_gid; /* 0x74 */ - __fs16 ui_modeh; /* 0x78 mode high bits */ - __fs16 ui_spare; /* 0x7A unused */ - __fs32 ui_trans; /* 0x7c filesystem translator */ - } ui_hurd; - } ui_u3; -}; - -#define UFS_NXADDR 2 /* External addresses in inode. */ -struct ufs2_inode { - __fs16 ui_mode; /* 0: IFMT, permissions; see below. */ - __fs16 ui_nlink; /* 2: File link count. */ - __fs32 ui_uid; /* 4: File owner. */ - __fs32 ui_gid; /* 8: File group. */ - __fs32 ui_blksize; /* 12: Inode blocksize. */ - __fs64 ui_size; /* 16: File byte count. */ - __fs64 ui_blocks; /* 24: Bytes actually held. */ - __fs64 ui_atime; /* 32: Last access time. */ - __fs64 ui_mtime; /* 40: Last modified time. */ - __fs64 ui_ctime; /* 48: Last inode change time. */ - __fs64 ui_birthtime; /* 56: Inode creation time. */ - __fs32 ui_mtimensec; /* 64: Last modified time. */ - __fs32 ui_atimensec; /* 68: Last access time. */ - __fs32 ui_ctimensec; /* 72: Last inode change time. */ - __fs32 ui_birthnsec; /* 76: Inode creation time. */ - __fs32 ui_gen; /* 80: Generation number. */ - __fs32 ui_kernflags; /* 84: Kernel flags. */ - __fs32 ui_flags; /* 88: Status flags (chflags). */ - __fs32 ui_extsize; /* 92: External attributes block. */ - __fs64 ui_extb[UFS_NXADDR];/* 96: External attributes block. */ - union { - struct { - __fs64 ui_db[UFS_NDADDR]; /* 112: Direct disk blocks. */ - __fs64 ui_ib[UFS_NINDIR];/* 208: Indirect disk blocks.*/ - } ui_addr; - __u8 ui_symlink[2*4*(UFS_NDADDR+UFS_NINDIR)];/* 0x28 fast symlink */ - } ui_u2; - __fs64 ui_spare[3]; /* 232: Reserved; currently unused */ -}; - - -/* FreeBSD has these in sys/stat.h */ -/* ui_flags that can be set by a file owner */ -#define UFS_UF_SETTABLE 0x0000ffff -#define UFS_UF_NODUMP 0x00000001 /* do not dump */ -#define UFS_UF_IMMUTABLE 0x00000002 /* immutable (can't "change") */ -#define UFS_UF_APPEND 0x00000004 /* append-only */ -#define UFS_UF_OPAQUE 0x00000008 /* directory is opaque (unionfs) */ -#define UFS_UF_NOUNLINK 0x00000010 /* can't be removed or renamed */ -/* ui_flags that only root can set */ -#define UFS_SF_SETTABLE 0xffff0000 -#define UFS_SF_ARCHIVED 0x00010000 /* archived */ -#define UFS_SF_IMMUTABLE 0x00020000 /* immutable (can't "change") */ -#define UFS_SF_APPEND 0x00040000 /* append-only */ -#define UFS_SF_NOUNLINK 0x00100000 /* can't be removed or renamed */ - -/* - * This structure is used for reading disk structures larger - * than the size of fragment. - */ -struct ufs_buffer_head { - __u64 fragment; /* first fragment */ - __u64 count; /* number of fragments */ - struct buffer_head * bh[UFS_MAXFRAG]; /* buffers */ -}; - -struct ufs_cg_private_info { - struct ufs_buffer_head c_ubh; - __u32 c_cgx; /* number of cylidner group */ - __u16 c_ncyl; /* number of cyl's this cg */ - __u16 c_niblk; /* number of inode blocks this cg */ - __u32 c_ndblk; /* number of data blocks this cg */ - __u32 c_rotor; /* position of last used block */ - __u32 c_frotor; /* position of last used frag */ - __u32 c_irotor; /* position of last used inode */ - __u32 c_btotoff; /* (__u32) block totals per cylinder */ - __u32 c_boff; /* (short) free block positions */ - __u32 c_iusedoff; /* (char) used inode map */ - __u32 c_freeoff; /* (u_char) free block map */ - __u32 c_nextfreeoff; /* (u_char) next available space */ - __u32 c_clustersumoff;/* (u_int32) counts of avail clusters */ - __u32 c_clusteroff; /* (u_int8) free cluster map */ - __u32 c_nclusterblks; /* number of clusters this cg */ -}; - - -struct ufs_sb_private_info { - struct ufs_buffer_head s_ubh; /* buffer containing super block */ - struct ufs_csum_core cs_total; - __u32 s_sblkno; /* offset of super-blocks in filesys */ - __u32 s_cblkno; /* offset of cg-block in filesys */ - __u32 s_iblkno; /* offset of inode-blocks in filesys */ - __u32 s_dblkno; /* offset of first data after cg */ - __u32 s_cgoffset; /* cylinder group offset in cylinder */ - __u32 s_cgmask; /* used to calc mod fs_ntrak */ - __u32 s_size; /* number of blocks (fragments) in fs */ - __u32 s_dsize; /* number of data blocks in fs */ - __u64 s_u2_size; /* ufs2: number of blocks (fragments) in fs */ - __u64 s_u2_dsize; /*ufs2: number of data blocks in fs */ - __u32 s_ncg; /* number of cylinder groups */ - __u32 s_bsize; /* size of basic blocks */ - __u32 s_fsize; /* size of fragments */ - __u32 s_fpb; /* fragments per block */ - __u32 s_minfree; /* minimum percentage of free blocks */ - __u32 s_bmask; /* `blkoff'' calc of blk offsets */ - __u32 s_fmask; /* s_fsize mask */ - __u32 s_bshift; /* `lblkno'' calc of logical blkno */ - __u32 s_fshift; /* s_fsize shift */ - __u32 s_fpbshift; /* fragments per block shift */ - __u32 s_fsbtodb; /* fsbtodb and dbtofsb shift constant */ - __u32 s_sbsize; /* actual size of super block */ - __u32 s_csmask; /* csum block offset */ - __u32 s_csshift; /* csum block number */ - __u32 s_nindir; /* value of NINDIR */ - __u32 s_inopb; /* value of INOPB */ - __u32 s_nspf; /* value of NSPF */ - __u32 s_npsect; /* # sectors/track including spares */ - __u32 s_interleave; /* hardware sector interleave */ - __u32 s_trackskew; /* sector 0 skew, per track */ - __u64 s_csaddr; /* blk addr of cyl grp summary area */ - __u32 s_cssize; /* size of cyl grp summary area */ - __u32 s_cgsize; /* cylinder group size */ - __u32 s_ntrak; /* tracks per cylinder */ - __u32 s_nsect; /* sectors per track */ - __u32 s_spc; /* sectors per cylinder */ - __u32 s_ipg; /* inodes per cylinder group */ - __u32 s_fpg; /* fragments per group */ - __u32 s_cpc; /* cyl per cycle in postbl */ - __s32 s_contigsumsize;/* size of cluster summary array, 44bsd */ - __s64 s_qbmask; /* ~usb_bmask */ - __s64 s_qfmask; /* ~usb_fmask */ - __s32 s_postblformat; /* format of positional layout tables */ - __s32 s_nrpos; /* number of rotational positions */ - __s32 s_postbloff; /* (__s16) rotation block list head */ - __s32 s_rotbloff; /* (__u8) blocks for each rotation */ - - __u32 s_fpbmask; /* fragments per block mask */ - __u32 s_apb; /* address per block */ - __u32 s_2apb; /* address per block^2 */ - __u32 s_3apb; /* address per block^3 */ - __u32 s_apbmask; /* address per block mask */ - __u32 s_apbshift; /* address per block shift */ - __u32 s_2apbshift; /* address per block shift * 2 */ - __u32 s_3apbshift; /* address per block shift * 3 */ - __u32 s_nspfshift; /* number of sector per fragment shift */ - __u32 s_nspb; /* number of sector per block */ - __u32 s_inopf; /* inodes per fragment */ - __u32 s_sbbase; /* offset of NeXTstep superblock */ - __u32 s_bpf; /* bits per fragment */ - __u32 s_bpfshift; /* bits per fragment shift*/ - __u32 s_bpfmask; /* bits per fragment mask */ - - __u32 s_maxsymlinklen;/* upper limit on fast symlinks' size */ - __s32 fs_magic; /* filesystem magic */ - unsigned int s_dirblksize; -}; - -/* - * Sizes of this structures are: - * ufs_super_block_first 512 - * ufs_super_block_second 512 - * ufs_super_block_third 356 - */ -struct ufs_super_block_first { - union { - struct { - __fs32 fs_link; /* UNUSED */ - } fs_42; - struct { - __fs32 fs_state; /* file system state flag */ - } fs_sun; - } fs_u0; - __fs32 fs_rlink; - __fs32 fs_sblkno; - __fs32 fs_cblkno; - __fs32 fs_iblkno; - __fs32 fs_dblkno; - __fs32 fs_cgoffset; - __fs32 fs_cgmask; - __fs32 fs_time; - __fs32 fs_size; - __fs32 fs_dsize; - __fs32 fs_ncg; - __fs32 fs_bsize; - __fs32 fs_fsize; - __fs32 fs_frag; - __fs32 fs_minfree; - __fs32 fs_rotdelay; - __fs32 fs_rps; - __fs32 fs_bmask; - __fs32 fs_fmask; - __fs32 fs_bshift; - __fs32 fs_fshift; - __fs32 fs_maxcontig; - __fs32 fs_maxbpg; - __fs32 fs_fragshift; - __fs32 fs_fsbtodb; - __fs32 fs_sbsize; - __fs32 fs_csmask; - __fs32 fs_csshift; - __fs32 fs_nindir; - __fs32 fs_inopb; - __fs32 fs_nspf; - __fs32 fs_optim; - union { - struct { - __fs32 fs_npsect; - } fs_sun; - struct { - __fs32 fs_state; - } fs_sunx86; - } fs_u1; - __fs32 fs_interleave; - __fs32 fs_trackskew; - __fs32 fs_id[2]; - __fs32 fs_csaddr; - __fs32 fs_cssize; - __fs32 fs_cgsize; - __fs32 fs_ntrak; - __fs32 fs_nsect; - __fs32 fs_spc; - __fs32 fs_ncyl; - __fs32 fs_cpg; - __fs32 fs_ipg; - __fs32 fs_fpg; - struct ufs_csum fs_cstotal; - __s8 fs_fmod; - __s8 fs_clean; - __s8 fs_ronly; - __s8 fs_flags; - __s8 fs_fsmnt[UFS_MAXMNTLEN - 212]; - -}; - -struct ufs_super_block_second { - union { - struct { - __s8 fs_fsmnt[212]; - __fs32 fs_cgrotor; - __fs32 fs_csp[UFS_MAXCSBUFS]; - __fs32 fs_maxcluster; - __fs32 fs_cpc; - __fs16 fs_opostbl[82]; - } fs_u1; - struct { - __s8 fs_fsmnt[UFS2_MAXMNTLEN - UFS_MAXMNTLEN + 212]; - __u8 fs_volname[UFS2_MAXVOLLEN]; - __fs64 fs_swuid; - __fs32 fs_pad; - __fs32 fs_cgrotor; - __fs32 fs_ocsp[UFS2_NOCSPTRS]; - __fs32 fs_contigdirs; - __fs32 fs_csp; - __fs32 fs_maxcluster; - __fs32 fs_active; - __fs32 fs_old_cpc; - __fs32 fs_maxbsize; - __fs64 fs_sparecon64[17]; - __fs64 fs_sblockloc; - __fs64 cs_ndir; - __fs64 cs_nbfree; - } fs_u2; - } fs_un; -}; - -struct ufs_super_block_third { - union { - struct { - __fs16 fs_opostbl[46]; - } fs_u1; - struct { - __fs64 cs_nifree; /* number of free inodes */ - __fs64 cs_nffree; /* number of free frags */ - __fs64 cs_numclusters; /* number of free clusters */ - __fs64 cs_spare[3]; /* future expansion */ - struct ufs_timeval fs_time; /* last time written */ - __fs64 fs_size; /* number of blocks in fs */ - __fs64 fs_dsize; /* number of data blocks in fs */ - __fs64 fs_csaddr; /* blk addr of cyl grp summary area */ - __fs64 fs_pendingblocks;/* blocks in process of being freed */ - __fs32 fs_pendinginodes;/*inodes in process of being freed */ - } __attribute__ ((packed)) fs_u2; - } fs_un1; - union { - struct { - __fs32 fs_sparecon[53];/* reserved for future constants */ - __fs32 fs_reclaim; - __fs32 fs_sparecon2[1]; - __fs32 fs_state; /* file system state time stamp */ - __fs32 fs_qbmask[2]; /* ~usb_bmask */ - __fs32 fs_qfmask[2]; /* ~usb_fmask */ - } fs_sun; - struct { - __fs32 fs_sparecon[53];/* reserved for future constants */ - __fs32 fs_reclaim; - __fs32 fs_sparecon2[1]; - __fs32 fs_npsect; /* # sectors/track including spares */ - __fs32 fs_qbmask[2]; /* ~usb_bmask */ - __fs32 fs_qfmask[2]; /* ~usb_fmask */ - } fs_sunx86; - struct { - __fs32 fs_sparecon[50];/* reserved for future constants */ - __fs32 fs_contigsumsize;/* size of cluster summary array */ - __fs32 fs_maxsymlinklen;/* max length of an internal symlink */ - __fs32 fs_inodefmt; /* format of on-disk inodes */ - __fs32 fs_maxfilesize[2]; /* max representable file size */ - __fs32 fs_qbmask[2]; /* ~usb_bmask */ - __fs32 fs_qfmask[2]; /* ~usb_fmask */ - __fs32 fs_state; /* file system state time stamp */ - } fs_44; - } fs_un2; - __fs32 fs_postblformat; - __fs32 fs_nrpos; - __fs32 fs_postbloff; - __fs32 fs_rotbloff; - __fs32 fs_magic; - __u8 fs_space[1]; -}; - -#endif /* __LINUX_UFS_FS_H */ |