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: stable/11/lib/libufs/inode.c 332638 2018-04-17 00:03:32Z mckusick $"); 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 49int 50getino(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 if (inode >= (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 (inode >= min && inode < max) 78 goto gotit; 79 bread(disk, fsbtodb(fs, ino_to_fsba(fs, inode)), inoblock, 80 fs->fs_bsize); 81 disk->d_inomin = min = inode - (inode % INOPB(fs)); 82 disk->d_inomax = max = min + INOPB(fs); 83gotit: switch (disk->d_ufs) { 84 case 1: 85 dp1 = &((struct ufs1_dinode *)inoblock)[inode - min]; 86 if (mode != NULL) 87 *mode = dp1->di_mode & IFMT; 88 if (dino != NULL) 89 *dino = dp1; 90 return (0); 91 case 2: 92 dp2 = &((struct ufs2_dinode *)inoblock)[inode - min]; 93 if (mode != NULL) 94 *mode = dp2->di_mode & IFMT; 95 if (dino != NULL) 96 *dino = dp2; 97 return (0); 98 default: 99 break; 100 } 101 ERROR(disk, "unknown UFS filesystem type"); 102 return (-1); 103} 104 105int 106putino(struct uufsd *disk) 107{ 108 struct fs *fs; 109 110 fs = &disk->d_fs; 111 if (disk->d_inoblock == NULL) { 112 ERROR(disk, "No inode block allocated"); 113 return (-1); 114 } 115 if (bwrite(disk, fsbtodb(fs, ino_to_fsba(&disk->d_fs, disk->d_inomin)), 116 disk->d_inoblock, disk->d_fs.fs_bsize) <= 0) 117 return (-1); 118 return (0); 119} 120