/* * Copyright 2007 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #ifndef _GRUB_UFS_H #define _GRUB_UFS_H_ #ifdef FSYS_UFS /* ufs specific constants */ #define UFS_SBLOCK 16 #define UFS_SBSIZE 8192 #define UFS_MAGIC 0x011954 #define ROOTINO 2 /* i number of all roots */ #define UFS_NDADDR 12 /* direct blocks */ #define UFS_NIADDR 3 /* indirect blocks */ #define MAXMNTLEN 512 #define MAXCSBUFS 32 /* file types */ #define IFMT 0xf000 #define IFREG 0x8000 #define IFDIR 0x4000 typedef unsigned char grub_uchar_t; typedef unsigned short grub_ushort_t; typedef unsigned short grub_o_mode_t; typedef unsigned short grub_o_uid_t; typedef unsigned short grub_o_gid_t; typedef long grub_ino_t; typedef long grub_int32_t; typedef long grub_uid_t; typedef long grub_gid_t; typedef unsigned long grub_uint32_t; typedef unsigned long grub_daddr32_t; typedef unsigned long grub_time32_t; typedef struct { int val[2]; } grub_quad_t; struct timeval32 { grub_time32_t tv_sec; grub_int32_t tv_usec; }; /* * Per cylinder group information; summarized in blocks allocated * from first cylinder group data blocks. These blocks have to be * read in from fs_csaddr (size fs_cssize) in addition to the * super block. * * N.B. sizeof (struct csum) must be a power of two in order for * the ``fs_cs'' macro to work (see below). */ struct csum { grub_int32_t cs_ndir; /* number of directories */ grub_int32_t cs_nbfree; /* number of free blocks */ grub_int32_t cs_nifree; /* number of free inodes */ grub_int32_t cs_nffree; /* number of free frags */ }; /* Ufs super block */ struct fs { grub_uint32_t fs_link; /* linked list of file systems */ grub_uint32_t fs_rolled; /* logging only: fs fully rolled */ grub_daddr32_t fs_sblkno; /* addr of super-block in filesys */ grub_daddr32_t fs_cblkno; /* offset of cyl-block in filesys */ grub_daddr32_t fs_iblkno; /* offset of inode-blocks in filesys */ grub_daddr32_t fs_dblkno; /* offset of first data after cg */ grub_int32_t fs_cgoffset; /* cylinder group offset in cylinder */ grub_int32_t fs_cgmask; /* used to calc mod fs_ntrak */ grub_time32_t fs_time; /* last time written */ grub_int32_t fs_size; /* number of blocks in fs */ grub_int32_t fs_dsize; /* number of data blocks in fs */ grub_int32_t fs_ncg; /* number of cylinder groups */ grub_int32_t fs_bsize; /* size of basic blocks in fs */ grub_int32_t fs_fsize; /* size of frag blocks in fs */ grub_int32_t fs_frag; /* number of frags in a block in fs */ /* these are configuration parameters */ grub_int32_t fs_minfree; /* minimum percentage of free blocks */ grub_int32_t fs_rotdelay; /* num of ms for optimal next block */ grub_int32_t fs_rps; /* disk revolutions per second */ /* these fields can be computed from the others */ grub_int32_t fs_bmask; /* ``blkoff'' calc of blk offsets */ grub_int32_t fs_fmask; /* ``fragoff'' calc of frag offsets */ grub_int32_t fs_bshift; /* ``lblkno'' calc of logical blkno */ grub_int32_t fs_fshift; /* ``numfrags'' calc number of frags */ /* these are configuration parameters */ grub_int32_t fs_maxcontig; /* max number of contiguous blks */ grub_int32_t fs_maxbpg; /* max number of blks per cyl group */ /* these fields can be computed from the others */ grub_int32_t fs_fragshift; /* block to frag shift */ grub_int32_t fs_fsbtodb; /* fsbtodb and dbtofsb shift constant */ grub_int32_t fs_sbsize; /* actual size of super block */ grub_int32_t fs_csmask; /* csum block offset */ grub_int32_t fs_csshift; /* csum block number */ grub_int32_t fs_nindir; /* value of NINDIR */ grub_int32_t fs_inopb; /* value of INOPB */ grub_int32_t fs_nspf; /* value of NSPF */ /* yet another configuration parameter */ grub_int32_t fs_optim; /* optimization preference, see below */ /* these fields are derived from the hardware */ /* USL SVR4 compatibility */ /* * * USL SVR4 compatibility * * There was a significant divergence here between Solaris and * SVR4 for x86. By swapping these two members in the superblock, * we get read-only compatibility of SVR4 filesystems. Otherwise * there would be no compatibility. This change was introduced * during bootstrapping of Solaris on x86. By making this ifdef'ed * on byte order, we provide ongoing compatibility across all * platforms with the same byte order, the highest compatibility * that can be achieved. */ grub_int32_t fs_state; /* file system state time stamp */ grub_int32_t fs_si; /* summary info state - lufs only */ grub_int32_t fs_trackskew; /* sector 0 skew, per track */ /* 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. */ grub_int32_t fs_id[2]; /* file system id */ /* sizes determined by number of cylinder groups and their sizes */ grub_daddr32_t fs_csaddr; /* blk addr of cyl grp summary area */ grub_int32_t fs_cssize; /* size of cyl grp summary area */ grub_int32_t fs_cgsize; /* cylinder group size */ /* these fields are derived from the hardware */ grub_int32_t fs_ntrak; /* tracks per cylinder */ grub_int32_t fs_nsect; /* sectors per track */ grub_int32_t fs_spc; /* sectors per cylinder */ /* this comes from the disk driver partitioning */ grub_int32_t fs_ncyl; /* cylinders in file system */ /* these fields can be computed from the others */ grub_int32_t fs_cpg; /* cylinders per group */ grub_int32_t fs_ipg; /* inodes per group */ grub_int32_t fs_fpg; /* blocks per group * fs_frag */ /* this data must be re-computed after crashes */ struct csum fs_cstotal; /* cylinder summary information */ /* these fields are cleared at mount time */ char fs_fmod; /* super block modified flag */ char fs_clean; /* file system state flag */ char fs_ronly; /* mounted read-only flag */ char fs_flags; /* largefiles flag, etc. */ char fs_fsmnt[MAXMNTLEN]; /* name mounted on */ /* these fields retain the current block allocation info */ grub_int32_t fs_cgrotor; /* last cg searched */ /* * The following used to be fs_csp[MAXCSBUFS]. It was not * used anywhere except in old utilities. We removed this * in 5.6 and expect fs_u.fs_csp to be used instead. * We no longer limit fs_cssize based on MAXCSBUFS. */ union { /* fs_cs (csum) info */ grub_uint32_t fs_csp_pad[MAXCSBUFS]; struct csum *fs_csp; } fs_u; grub_int32_t fs_cpc; /* cyl per cycle in postbl */ short fs_opostbl[16][8]; /* old rotation block list head */ grub_int32_t fs_sparecon[51]; /* reserved for future constants */ grub_int32_t fs_version; /* minor version of MTB ufs */ grub_int32_t fs_logbno; /* block # of embedded log */ grub_int32_t fs_reclaim; /* reclaim open, deleted files */ grub_int32_t fs_sparecon2; /* reserved for future constant */ /* USL SVR4 compatibility */ grub_int32_t fs_npsect; /* # sectors/track including spares */ grub_quad_t fs_qbmask; /* ~fs_bmask - for use with quad size */ grub_quad_t fs_qfmask; /* ~fs_fmask - for use with quad size */ grub_int32_t fs_postblformat; /* fmt of positional layout tables */ grub_int32_t fs_nrpos; /* number of rotaional positions */ grub_int32_t fs_postbloff; /* (short) rotation block list head */ grub_int32_t fs_rotbloff; /* (grub_uchar_t) blocks for each */ /* rotation */ grub_int32_t fs_magic; /* magic number */ grub_uchar_t fs_space[1]; /* list of blocks for each rotation */ /* actually longer */ }; struct icommon { grub_o_mode_t ic_smode; /* 0: mode and type of file */ short ic_nlink; /* 2: number of links to file */ grub_o_uid_t ic_suid; /* 4: owner's user id */ grub_o_gid_t ic_sgid; /* 6: owner's group id */ grub_uint32_t ic_sizelo; /* 8: number of bytes in file */ grub_uint32_t ic_sizehi; /* 12: number of bytes in file */ struct timeval32 ic_atime; /* 16: time last accessed */ struct timeval32 ic_mtime; /* 24: time last modified */ struct timeval32 ic_ctime; /* 32: last time inode changed */ grub_daddr32_t ic_db[UFS_NDADDR]; /* 40: disk block addresses */ grub_daddr32_t ic_ib[UFS_NIADDR]; /* 88: indirect blocks */ grub_int32_t ic_flags; /* 100: cflags */ grub_int32_t ic_blocks; /* 104: 512 byte blocks actually held */ grub_int32_t ic_gen; /* 108: generation number */ grub_int32_t ic_shadow; /* 112: shadow inode */ grub_uid_t ic_uid; /* 116: long EFT version of uid */ grub_gid_t ic_gid; /* 120: long EFT version of gid */ grub_uint32_t ic_oeftflag; /* 124: extended attr directory ino, */ /* 0 = none */ }; struct direct { grub_ino_t d_ino; grub_ushort_t d_reclen; grub_ushort_t d_namelen; char d_name[MAXNAMELEN + 1]; }; /* inode macros */ #define INOPB(fs) ((fs)->fs_inopb) #define itoo(fs, x) ((x) % (grub_uint32_t)INOPB(fs)) #define itog(fs, x) ((x) / (grub_uint32_t)(fs)->fs_ipg) #define itod(fs, x) ((grub_daddr32_t)(cgimin(fs, itog(fs, x)) + \ (blkstofrags((fs), \ ((x) % (grub_uint32_t)(fs)->fs_ipg / (grub_uint32_t)INOPB(fs)))))) /* block conversion macros */ #define UFS_NINDIR(fs) ((fs)->fs_nindir) /* # of indirects */ #define blkoff(fs, loc) ((int)((loc & ~(fs)->fs_bmask))) #define lblkno(fs, loc) ((grub_int32_t)((loc) >> (fs)->fs_bshift)) /* frag to blk */ #define fsbtodb(fs, b) (((grub_daddr32_t)(b)) << (fs)->fs_fsbtodb) #define blkstofrags(fs, b) ((b) << (fs)->fs_fragshift) /* cynlinder group macros */ #define cgbase(fs, c) ((grub_daddr32_t)((fs)->fs_fpg * (c))) #define cgimin(fs, c) (cgstart(fs, c) + (fs)->fs_iblkno) /* inode block */ #define cgstart(fs, c) \ (cgbase(fs, c) + (fs)->fs_cgoffset * ((c) & ~((fs)->fs_cgmask))) #endif /* FSYS_UFS */ #endif /* !_GRUB_UFS_H */
