1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2002 Juli Mallett. All rights reserved. 5 * 6 * This software was written by Juli Mallett <jmallett@FreeBSD.org> for the 7 * FreeBSD project. Redistribution and use in source and binary forms, with 8 * or without modification, are permitted provided that the following 9 * conditions are met: 10 * 11 * 1. Redistribution of source code must retain the above copyright notice, 12 * this list of conditions and the following disclaimer. 13 * 2. Redistribution in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 21 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 26 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/mount.h> 35 #include <sys/disklabel.h> 36 #include <sys/stat.h> 37 38 #include <ufs/ufs/ufsmount.h> 39 #include <ufs/ufs/dinode.h> 40 #include <ufs/ffs/fs.h> 41 42 #include <errno.h> 43 #include <fcntl.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <string.h> 47 #include <unistd.h> 48 49 #include <libufs.h> 50 51 int 52 getinode(struct uufsd *disk, union dinodep *dp, ino_t inum) 53 { 54 ino_t min, max; 55 caddr_t inoblock; 56 struct fs *fs; 57 58 ERROR(disk, NULL); 59 60 fs = &disk->d_fs; 61 if (inum >= (ino_t)fs->fs_ipg * fs->fs_ncg) { 62 ERROR(disk, "inode number out of range"); 63 return (-1); 64 } 65 inoblock = disk->d_inoblock; 66 min = disk->d_inomin; 67 max = disk->d_inomax; 68 69 if (inoblock == NULL) { 70 inoblock = malloc(fs->fs_bsize); 71 if (inoblock == NULL) { 72 ERROR(disk, "unable to allocate inode block"); 73 return (-1); 74 } 75 disk->d_inoblock = inoblock; 76 } 77 if (inum >= min && inum < max) 78 goto gotit; 79 bread(disk, fsbtodb(fs, ino_to_fsba(fs, inum)), inoblock, 80 fs->fs_bsize); 81 disk->d_inomin = min = inum - (inum % INOPB(fs)); 82 disk->d_inomax = max = min + INOPB(fs); 83 gotit: switch (disk->d_ufs) { 84 case 1: 85 disk->d_dp.dp1 = &((struct ufs1_dinode *)inoblock)[inum - min]; 86 if (dp != NULL) 87 *dp = disk->d_dp; 88 return (0); 89 case 2: 90 disk->d_dp.dp2 = &((struct ufs2_dinode *)inoblock)[inum - min]; 91 if (dp != NULL) 92 *dp = disk->d_dp; 93 if (ffs_verify_dinode_ckhash(fs, disk->d_dp.dp2) == 0) 94 return (0); 95 ERROR(disk, "check-hash failed for inode read from disk"); 96 return (-1); 97 default: 98 break; 99 } 100 ERROR(disk, "unknown UFS filesystem type"); 101 return (-1); 102 } 103 104 int 105 putinode(struct uufsd *disk) 106 { 107 struct fs *fs; 108 109 fs = &disk->d_fs; 110 if (disk->d_inoblock == NULL) { 111 ERROR(disk, "No inode block allocated"); 112 return (-1); 113 } 114 if (disk->d_ufs == 2) 115 ffs_update_dinode_ckhash(fs, disk->d_dp.dp2); 116 if (bwrite(disk, fsbtodb(fs, ino_to_fsba(&disk->d_fs, disk->d_inomin)), 117 disk->d_inoblock, disk->d_fs.fs_bsize) <= 0) 118 return (-1); 119 return (0); 120 } 121