diff options
Diffstat (limited to 'sys/boot/common')
-rw-r--r-- | sys/boot/common/ufsread.c | 66 |
1 files changed, 35 insertions, 31 deletions
diff --git a/sys/boot/common/ufsread.c b/sys/boot/common/ufsread.c index 2724d7c..b767732 100644 --- a/sys/boot/common/ufsread.c +++ b/sys/boot/common/ufsread.c @@ -49,6 +49,7 @@ __FBSDID("$FreeBSD$"); #include <ufs/ufs/dinode.h> #include <ufs/ufs/dir.h> #include <ufs/ffs/fs.h> + #ifdef UFS_SMALL_CGBASE /* XXX: Revert to old (broken for over 1.5Tb filesystems) version of cgbase (see sys/ufs/ffs/fs.h rev 1.39) so that small boot loaders (e.g. boot2) can @@ -90,7 +91,7 @@ static ssize_t fsread(ino_t, void *, size_t); static uint8_t ls, dsk_meta; static uint32_t fs_off; -static __inline int +static __inline uint8_t fsfind(const char *name, ino_t * ino) { char buf[DEV_BSIZE]; @@ -158,7 +159,7 @@ static int sblock_try[] = SBLOCKSEARCH; #elif defined(UFS1_ONLY) #define DIP(field) dp1.field #else -#define DIP(field) fs->fs_magic == FS_UFS1_MAGIC ? dp1.field : dp2.field +#define DIP(field) fs.fs_magic == FS_UFS1_MAGIC ? dp1.field : dp2.field #endif static ssize_t @@ -173,7 +174,7 @@ fsread(ino_t inode, void *buf, size_t nbyte) static ino_t inomap; char *blkbuf; void *indbuf; - struct fs *fs; + struct fs fs; char *s; size_t n, nb, size, off, vboff; ufs_lbn_t lbn; @@ -181,30 +182,29 @@ fsread(ino_t inode, void *buf, size_t nbyte) static ufs2_daddr_t blkmap, indmap; u_int u; - blkbuf = dmadat->blkbuf; indbuf = dmadat->indbuf; - fs = (struct fs *)dmadat->sbbuf; if (!dsk_meta) { inomap = 0; for (n = 0; sblock_try[n] != -1; n++) { - if (dskread(fs, sblock_try[n] / DEV_BSIZE, + if (dskread(dmadat->sbbuf, sblock_try[n] / DEV_BSIZE, SBLOCKSIZE / DEV_BSIZE)) return -1; + memcpy(&fs, dmadat->sbbuf, sizeof(struct fs)); if (( #if defined(UFS1_ONLY) - fs->fs_magic == FS_UFS1_MAGIC + fs.fs_magic == FS_UFS1_MAGIC #elif defined(UFS2_ONLY) - (fs->fs_magic == FS_UFS2_MAGIC && - fs->fs_sblockloc == sblock_try[n]) + (fs.fs_magic == FS_UFS2_MAGIC && + fs.fs_sblockloc == sblock_try[n]) #else - fs->fs_magic == FS_UFS1_MAGIC || - (fs->fs_magic == FS_UFS2_MAGIC && - fs->fs_sblockloc == sblock_try[n]) + fs.fs_magic == FS_UFS1_MAGIC || + (fs.fs_magic == FS_UFS2_MAGIC && + fs.fs_sblockloc == sblock_try[n]) #endif ) && - fs->fs_bsize <= MAXBSIZE && - fs->fs_bsize >= sizeof(struct fs)) + fs.fs_bsize <= MAXBSIZE && + fs.fs_bsize >= sizeof(struct fs)) break; } if (sblock_try[n] == -1) { @@ -212,12 +212,13 @@ fsread(ino_t inode, void *buf, size_t nbyte) return -1; } dsk_meta++; - } + } else + memcpy(&fs, dmadat->sbbuf, sizeof(struct fs)); if (!inode) return 0; if (inomap != inode) { - n = IPERVBLK(fs); - if (dskread(blkbuf, INO_TO_VBA(fs, n, inode), DBPERVBLK)) + n = IPERVBLK(&fs); + if (dskread(blkbuf, INO_TO_VBA(&fs, n, inode), DBPERVBLK)) return -1; n = INO_TO_VBO(n, inode); #if defined(UFS1_ONLY) @@ -227,13 +228,12 @@ fsread(ino_t inode, void *buf, size_t nbyte) memcpy(&dp2, (struct ufs2_dinode *)blkbuf + n, sizeof(struct ufs2_dinode)); #else - if (fs->fs_magic == FS_UFS1_MAGIC) + if (fs.fs_magic == FS_UFS1_MAGIC) memcpy(&dp1, (struct ufs1_dinode *)blkbuf + n, sizeof(struct ufs1_dinode)); else memcpy(&dp2, (struct ufs2_dinode *)blkbuf + n, sizeof(struct ufs2_dinode)); - #endif inomap = inode; fs_off = 0; @@ -246,15 +246,15 @@ fsread(ino_t inode, void *buf, size_t nbyte) nbyte = n; nb = nbyte; while (nb) { - lbn = lblkno(fs, fs_off); - off = blkoff(fs, fs_off); + lbn = lblkno(&fs, fs_off); + off = blkoff(&fs, fs_off); if (lbn < NDADDR) { addr = DIP(di_db[lbn]); - } else if (lbn < NDADDR + NINDIR(fs)) { - n = INDIRPERVBLK(fs); + } else if (lbn < NDADDR + NINDIR(&fs)) { + n = INDIRPERVBLK(&fs); addr = DIP(di_ib[0]); u = (u_int)(lbn - NDADDR) / n * DBPERVBLK; - vbaddr = fsbtodb(fs, addr) + u; + vbaddr = fsbtodb(&fs, addr) + u; if (indmap != vbaddr) { if (dskread(indbuf, vbaddr, DBPERVBLK)) return -1; @@ -262,21 +262,25 @@ fsread(ino_t inode, void *buf, size_t nbyte) } n = (lbn - NDADDR) & (n - 1); #if defined(UFS1_ONLY) - addr = ((ufs1_daddr_t *)indbuf)[n]; + memcpy(&addr, (ufs1_daddr_t *)indbuf + n, + sizeof(ufs1_daddr_t)); #elif defined(UFS2_ONLY) - addr = ((ufs2_daddr_t *)indbuf)[n]; + memcpy(&addr, (ufs2_daddr_t *)indbuf + n, + sizeof(ufs2_daddr_t)); #else - if (fs->fs_magic == FS_UFS1_MAGIC) - addr = ((ufs1_daddr_t *)indbuf)[n]; + if (fs.fs_magic == FS_UFS1_MAGIC) + memcpy(&addr, (ufs1_daddr_t *)indbuf + n, + sizeof(ufs1_daddr_t)); else - addr = ((ufs2_daddr_t *)indbuf)[n]; + memcpy(&addr, (ufs2_daddr_t *)indbuf + n, + sizeof(ufs2_daddr_t)); #endif } else { return -1; } - vbaddr = fsbtodb(fs, addr) + (off >> VBLKSHIFT) * DBPERVBLK; + vbaddr = fsbtodb(&fs, addr) + (off >> VBLKSHIFT) * DBPERVBLK; vboff = off & VBLKMASK; - n = sblksize(fs, size, lbn) - (off & ~VBLKMASK); + n = sblksize(&fs, size, lbn) - (off & ~VBLKMASK); if (n > VBLKSIZE) n = VBLKSIZE; if (blkmap != vbaddr) { |