diff options
Diffstat (limited to 'lib/libufs/inode.c')
| -rw-r--r-- | lib/libufs/inode.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/lib/libufs/inode.c b/lib/libufs/inode.c new file mode 100644 index 000000000000..863e71867daa --- /dev/null +++ b/lib/libufs/inode.c @@ -0,0 +1,119 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2002 Juli Mallett. All rights reserved. + * + * This software was written by Juli Mallett <jmallett@FreeBSD.org> for the + * FreeBSD project. Redistribution and use in source and binary forms, with + * or without modification, are permitted provided that the following + * conditions are met: + * + * 1. Redistribution of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistribution in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/param.h> +#include <sys/mount.h> +#include <sys/disklabel.h> +#include <sys/stat.h> + +#include <ufs/ufs/extattr.h> +#include <ufs/ufs/quota.h> +#include <ufs/ufs/ufsmount.h> +#include <ufs/ufs/dinode.h> +#include <ufs/ffs/fs.h> + +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <unistd.h> + +#include <libufs.h> + +int +getinode(struct uufsd *disk, union dinodep *dp, ino_t inum) +{ + ino_t min, max; + caddr_t inoblock; + struct fs *fs; + struct timespec now; + + ERROR(disk, NULL); + + fs = &disk->d_fs; + if (inum >= (ino_t)fs->fs_ipg * fs->fs_ncg) { + ERROR(disk, "inode number out of range"); + return (-1); + } + inoblock = (caddr_t)&disk->d_inos[0]; + min = disk->d_inomin; + max = disk->d_inomax; + + if (clock_gettime(CLOCK_REALTIME_FAST, &now) != 0) { + ERROR(disk, "cannot get current time of day"); + return (-1); + } + if (inum >= min && inum < max) + goto gotit; + bread(disk, fsbtodb(fs, ino_to_fsba(fs, inum)), inoblock, + fs->fs_bsize); + disk->d_inomin = min = inum - (inum % INOPB(fs)); + disk->d_inomax = max = min + INOPB(fs); +gotit: switch (disk->d_ufs) { + case 1: + disk->d_dp.dp1 = &((struct ufs1_dinode *)inoblock)[inum - min]; + if (ffs_oldfscompat_inode_read(fs, disk->d_dp, now.tv_sec)) + putinode(disk); + if (dp != NULL) + *dp = disk->d_dp; + return (0); + case 2: + disk->d_dp.dp2 = &((struct ufs2_dinode *)inoblock)[inum - min]; + if (dp != NULL) + *dp = disk->d_dp; + if (ffs_verify_dinode_ckhash(fs, disk->d_dp.dp2) == 0) { + if (ffs_oldfscompat_inode_read(fs, disk->d_dp, + now.tv_sec)) + putinode(disk); + return (0); + } + ERROR(disk, "check-hash failed for inode read from disk"); + return (-1); + default: + break; + } + ERROR(disk, "unknown UFS filesystem type"); + return (-1); +} + +int +putinode(struct uufsd *disk) +{ + struct fs *fs; + + fs = &disk->d_fs; + if (disk->d_ufs == 2) + ffs_update_dinode_ckhash(fs, disk->d_dp.dp2); + if (bwrite(disk, fsbtodb(fs, ino_to_fsba(&disk->d_fs, disk->d_inomin)), + (caddr_t)&disk->d_inos[0], disk->d_fs.fs_bsize) <= 0) + return (-1); + return (0); +} |