122ec2ef3SJuli Mallett /* 222ec2ef3SJuli Mallett * Copyright (c) 2003 Juli Mallett. All rights reserved. 322ec2ef3SJuli Mallett * 422ec2ef3SJuli Mallett * This software was written by Juli Mallett <jmallett@FreeBSD.org> for the 522ec2ef3SJuli Mallett * FreeBSD project. Redistribution and use in source and binary forms, with 622ec2ef3SJuli Mallett * or without modification, are permitted provided that the following 722ec2ef3SJuli Mallett * conditions are met: 822ec2ef3SJuli Mallett * 922ec2ef3SJuli Mallett * 1. Redistribution of source code must retain the above copyright notice, 1022ec2ef3SJuli Mallett * this list of conditions and the following disclaimer. 1122ec2ef3SJuli Mallett * 2. Redistribution in binary form must reproduce the above copyright 1222ec2ef3SJuli Mallett * notice, this list of conditions and the following disclaimer in the 1322ec2ef3SJuli Mallett * documentation and/or other materials provided with the distribution. 1422ec2ef3SJuli Mallett * 1522ec2ef3SJuli Mallett * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 1622ec2ef3SJuli Mallett * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 1722ec2ef3SJuli Mallett * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 1822ec2ef3SJuli Mallett * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 1922ec2ef3SJuli Mallett * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 2022ec2ef3SJuli Mallett * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 2122ec2ef3SJuli Mallett * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2222ec2ef3SJuli Mallett * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 2322ec2ef3SJuli Mallett * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 2422ec2ef3SJuli Mallett * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2522ec2ef3SJuli Mallett * POSSIBILITY OF SUCH DAMAGE. 2622ec2ef3SJuli Mallett */ 2722ec2ef3SJuli Mallett 2822ec2ef3SJuli Mallett #include <sys/cdefs.h> 2922ec2ef3SJuli Mallett __FBSDID("$FreeBSD$"); 3022ec2ef3SJuli Mallett 3122ec2ef3SJuli Mallett #include <sys/param.h> 3222ec2ef3SJuli Mallett #include <sys/mount.h> 3322ec2ef3SJuli Mallett #include <sys/disklabel.h> 3422ec2ef3SJuli Mallett #include <sys/stat.h> 3522ec2ef3SJuli Mallett 3622ec2ef3SJuli Mallett #include <ufs/ufs/ufsmount.h> 3722ec2ef3SJuli Mallett #include <ufs/ufs/dinode.h> 3822ec2ef3SJuli Mallett #include <ufs/ffs/fs.h> 3922ec2ef3SJuli Mallett 4022ec2ef3SJuli Mallett #include <errno.h> 4122ec2ef3SJuli Mallett #include <fcntl.h> 4222ec2ef3SJuli Mallett #include <stdio.h> 4322ec2ef3SJuli Mallett #include <string.h> 4422ec2ef3SJuli Mallett #include <unistd.h> 4522ec2ef3SJuli Mallett 4622ec2ef3SJuli Mallett #include <libufs.h> 4722ec2ef3SJuli Mallett 4822ec2ef3SJuli Mallett int 4922ec2ef3SJuli Mallett cgread(struct uufsd *disk) 5022ec2ef3SJuli Mallett { 5122ec2ef3SJuli Mallett return cgread1(disk, disk->d_ccg++); 5222ec2ef3SJuli Mallett } 5322ec2ef3SJuli Mallett 5422ec2ef3SJuli Mallett int 5522ec2ef3SJuli Mallett cgread1(struct uufsd *disk, int c) 5622ec2ef3SJuli Mallett { 5722ec2ef3SJuli Mallett struct fs *fs; 5822ec2ef3SJuli Mallett off_t ccg; 5922ec2ef3SJuli Mallett 6022ec2ef3SJuli Mallett fs = &disk->d_fs; 6122ec2ef3SJuli Mallett 6222ec2ef3SJuli Mallett if (c >= fs->fs_ncg) { 6322ec2ef3SJuli Mallett return 0; 6422ec2ef3SJuli Mallett } 6522ec2ef3SJuli Mallett ccg = fsbtodb(fs, cgtod(fs, c)) * disk->d_bsize; 6622ec2ef3SJuli Mallett if (bread(disk, fsbtodb(fs, cgtod(fs, c)), disk->d_cgunion.d_buf, 6722ec2ef3SJuli Mallett fs->fs_bsize) == -1) { 6822ec2ef3SJuli Mallett ERROR(disk, "unable to read cylinder group"); 6922ec2ef3SJuli Mallett return -1; 7022ec2ef3SJuli Mallett } 7122ec2ef3SJuli Mallett return 1; 7222ec2ef3SJuli Mallett } 73