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96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
/*
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* Copyright (c) 2002 Juli Mallett. All rights reserved.
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*
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* This software was written by Juli Mallett <jmallett@FreeBSD.org> for the
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* FreeBSD project. Redistribution and use in source and binary forms, with
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* or without modification, are permitted provided that the following
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* conditions are met:
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*
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* 1. Redistribution of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistribution in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <sys/disklabel.h>
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#include <sys/stat.h>
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#include <ufs/ufs/ufsmount.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ffs/fs.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <libufs.h>
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int
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getino(struct uufsd *disk, void **dino, ino_t inode, int *mode)
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{
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ino_t min, max;
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caddr_t inoblock;
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struct ufs1_dinode *dp1;
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struct ufs2_dinode *dp2;
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struct fs *fs;
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ERROR(disk, NULL);
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fs = &disk->d_fs;
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inoblock = disk->d_inoblock;
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min = disk->d_inomin;
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max = disk->d_inomax;
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if (inoblock == NULL) {
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inoblock = malloc(fs->fs_bsize);
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if (inoblock == NULL) {
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ERROR(disk, "unable to allocate inode block");
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return (-1);
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}
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disk->d_inoblock = inoblock;
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}
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if (inode >= min && inode < max)
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goto gotit;
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bread(disk, fsbtodb(fs, ino_to_fsba(fs, inode)), inoblock,
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fs->fs_bsize);
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disk->d_inomin = min = inode - (inode % INOPB(fs));
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disk->d_inomax = max = min + INOPB(fs);
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gotit: switch (disk->d_ufs) {
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case 1:
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dp1 = &((struct ufs1_dinode *)inoblock)[inode - min];
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*mode = dp1->di_mode & IFMT;
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*dino = dp1;
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return (0);
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case 2:
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dp2 = &((struct ufs2_dinode *)inoblock)[inode - min];
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*mode = dp2->di_mode & IFMT;
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*dino = dp2;
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return (0);
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default:
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break;
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}
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ERROR(disk, "unknown UFS filesystem type");
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return (-1);
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}
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