1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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/param.h> 31 #include <sys/mount.h> 32 #include <sys/disklabel.h> 33 #include <sys/stat.h> 34 35 #include <ufs/ufs/extattr.h> 36 #include <ufs/ufs/quota.h> 37 #include <ufs/ufs/ufsmount.h> 38 #include <ufs/ufs/dinode.h> 39 #include <ufs/ffs/fs.h> 40 41 #include <errno.h> 42 #include <fcntl.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <time.h> 47 #include <unistd.h> 48 49 #include <libufs.h> 50 51 _Static_assert(LIBUFS_MAXBSIZE >= MAXBSIZE, 52 "LIBUFS_MAXBSIZE must be at least MAXBSIZE"); 53 54 int 55 getinode(struct uufsd *disk, union dinodep *dp, ino_t inum) 56 { 57 ino_t min, max; 58 caddr_t inoblock; 59 struct fs *fs; 60 struct timespec time; 61 time_t now; 62 63 ERROR(disk, NULL); 64 65 fs = &disk->d_fs; 66 if (inum >= (ino_t)fs->fs_ipg * fs->fs_ncg) { 67 ERROR(disk, "inode number out of range"); 68 return (-1); 69 } 70 inoblock = (caddr_t)&disk->d_inos[0]; 71 min = disk->d_inomin; 72 max = disk->d_inomax; 73 74 if (clock_gettime(CLOCK_REALTIME_FAST, &time) == 0 && 75 time.tv_sec > fs->fs_time) 76 now = time.tv_sec; 77 else 78 now = fs->fs_time; 79 if (inum >= min && inum < max) 80 goto gotit; 81 bread(disk, fsbtodb(fs, ino_to_fsba(fs, inum)), inoblock, 82 fs->fs_bsize); 83 disk->d_inomin = min = inum - (inum % INOPB(fs)); 84 disk->d_inomax = max = min + INOPB(fs); 85 gotit: switch (disk->d_ufs) { 86 case 1: 87 disk->d_dp.dp1 = &((struct ufs1_dinode *)inoblock)[inum - min]; 88 if (ffs_oldfscompat_inode_read(fs, disk->d_dp, now)) 89 putinode(disk); 90 if (dp != NULL) 91 *dp = disk->d_dp; 92 return (0); 93 case 2: 94 disk->d_dp.dp2 = &((struct ufs2_dinode *)inoblock)[inum - min]; 95 if (dp != NULL) 96 *dp = disk->d_dp; 97 if (ffs_verify_dinode_ckhash(fs, disk->d_dp.dp2) == 0) { 98 if (ffs_oldfscompat_inode_read(fs, disk->d_dp, now)) 99 putinode(disk); 100 return (0); 101 } 102 ERROR(disk, "check-hash failed for inode read from disk"); 103 return (-1); 104 default: 105 break; 106 } 107 ERROR(disk, "unknown UFS filesystem type"); 108 return (-1); 109 } 110 111 int 112 putinode(struct uufsd *disk) 113 { 114 struct fs *fs; 115 116 fs = &disk->d_fs; 117 if (disk->d_ufs == 2) 118 ffs_update_dinode_ckhash(fs, disk->d_dp.dp2); 119 if (bwrite(disk, fsbtodb(fs, ino_to_fsba(&disk->d_fs, disk->d_inomin)), 120 (caddr_t)&disk->d_inos[0], disk->d_fs.fs_bsize) <= 0) 121 return (-1); 122 return (0); 123 } 124