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