82 lines
2.0 KiB
C
82 lines
2.0 KiB
C
/* from Id: readufs.h,v 1.7 2002/01/26 15:55:51 itohy Exp */
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/*
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* Written by ITOH, Yasufumi (itohy@netbsd.org)
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* Public domain.
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*/
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#include <ufs/ufs/dir.h>
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/*
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* filesystem information
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*/
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struct ufs_info {
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enum ufs_fstype {
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UFSTYPE_UNKNOWN
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#ifdef USE_FFS
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, UFSTYPE_FFS
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#endif
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#ifdef USE_LFS
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, UFSTYPE_LFS
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#endif
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} fstype;
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int (*get_inode) __P((ino_t ino, struct dinode *dibuf));
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/* superblock information */
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u_int32_t bsize; /* fs block size */
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u_int32_t nindir; /* # indirect per block */
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u_int32_t fsbtodb; /* block -> sector shift count */
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union {
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#ifdef USE_FFS
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struct {
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ufs_daddr_t iblkno; /* inode-block offset */
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int32_t cgoffset; /* cylinder group offset */
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int32_t cgmask; /* cylinder group mask */
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int32_t fragshift; /* block to fragmentation */
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int32_t inopb; /* # inodes per block */
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int32_t ipg; /* # inodes per group */
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int32_t fpg; /* # inodes per group * frag */
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} u_ffs;
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#endif
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#ifdef USE_LFS
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struct {
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u_int32_t version; /* LFS version # */
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ufs_daddr_t idaddr; /* ifile inode disk address */
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u_int32_t inopb; /* inodes per block (v1) */
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/* inodes per frag (v2) */
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u_int32_t ifpb; /* inode addrs / ifile block */
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u_int32_t ioffset; /* start of inode in ifile */
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/* (in sector) */
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u_int32_t ibsize; /* size of inode block */
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} u_lfs;
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#endif
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} fs_u;
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};
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extern struct ufs_info ufs_info;
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#define ufs_get_inode(ino, di) ((*ufs_info.get_inode)((ino), (di)))
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void RAW_READ __P((void *buf, ufs_daddr_t blkpos, size_t bytelen));
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size_t ufs_read __P((struct dinode *di, void *buf, unsigned off, size_t count));
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ino_t ufs_lookup __P((ino_t dirino, const char *fn));
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ino_t ufs_lookup_path __P((const char *path));
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size_t ufs_load_file __P((void *buf, ino_t dirino, const char *fn));
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int ufs_init __P((void));
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#ifdef USE_FFS
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int try_ffs __P((void));
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#endif
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#ifdef USE_LFS
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int try_lfs __P((void));
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#endif
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#ifdef DEBUG_WITH_STDIO
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#include <fcntl.h>
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#include <err.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#endif
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