429 lines
12 KiB
C
429 lines
12 KiB
C
/* $NetBSD: dumpfs.c,v 1.36 2003/08/12 13:15:35 dsl Exp $ */
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/*
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* Copyright (c) 1983, 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions 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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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR 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, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1983, 1992, 1993\n\
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The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)dumpfs.c 8.5 (Berkeley) 4/29/95";
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#else
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__RCSID("$NetBSD: dumpfs.c,v 1.36 2003/08/12 13:15:35 dsl Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/time.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ufs/ufs_bswap.h>
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#include <ufs/ffs/fs.h>
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#include <ufs/ffs/ffs_extern.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <fstab.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 <util.h>
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union {
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struct fs fs;
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char pad[MAXBSIZE];
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} fsun;
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#define afs fsun.fs
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union {
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struct cg cg;
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char pad[MAXBSIZE];
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} cgun;
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#define acg cgun.cg
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long dev_bsize = 1;
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int needswap, Fflag;
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int is_ufs2;
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int dumpfs(const char *);
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int dumpcg(const char *, int, int);
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int main(int, char **);
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int openpartition(const char *, int, char *, size_t);
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void pbits(void *, int);
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void usage(void);
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void swap_cg(struct cg *);
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int
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main(int argc, char *argv[])
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{
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int ch, eval;
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while ((ch = getopt(argc, argv, "F")) != -1)
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switch(ch) {
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case 'F':
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Fflag = 1;
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break;
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case '?':
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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if (argc < 1)
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usage();
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for (eval = 0; *argv; ++argv) {
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eval |= dumpfs(*argv);
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printf("\n");
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}
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exit(eval);
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}
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off_t sblock_try[] = SBLOCKSEARCH;
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int
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dumpfs(const char *name)
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{
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int fd, i, j, size, printold;
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time_t t;
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char device[MAXPATHLEN];
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struct csum *ccsp;
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if (Fflag)
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fd = open(name, O_RDONLY);
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else {
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fd = openpartition(name, O_RDONLY, device, sizeof(device));
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name = device;
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}
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if (fd == -1)
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goto err;
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for (i = 0; ; i++) {
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if (sblock_try[i] == -1) {
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warnx("%s: could not find superblock, skipped", name);
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return 1;
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}
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if (lseek(fd, sblock_try[i], SEEK_SET) == (off_t)-1)
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continue;
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if (read(fd, &afs, SBLOCKSIZE) != SBLOCKSIZE)
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continue;
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switch(afs.fs_magic) {
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case FS_UFS2_MAGIC:
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is_ufs2 = 1;
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break;
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case FS_UFS1_MAGIC:
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break;
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case FS_UFS2_MAGIC_SWAPPED:
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is_ufs2 = 1;
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needswap = 1;
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break;
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case FS_UFS1_MAGIC_SWAPPED:
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needswap = 1;
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break;
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default:
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continue;
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}
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break;
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}
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if (needswap)
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ffs_sb_swap(&afs, &afs);
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printold = (afs.fs_magic == FS_UFS1_MAGIC &&
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(afs.fs_old_flags & FS_FLAGS_UPDATED) == 0);
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if (printold) {
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afs.fs_flags = afs.fs_old_flags;
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afs.fs_maxbsize = afs.fs_bsize;
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afs.fs_time = afs.fs_old_time;
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afs.fs_size = afs.fs_old_size;
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afs.fs_dsize = afs.fs_old_dsize;
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afs.fs_csaddr = afs.fs_old_csaddr;
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afs.fs_cstotal.cs_ndir = afs.fs_old_cstotal.cs_ndir;
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afs.fs_cstotal.cs_nbfree = afs.fs_old_cstotal.cs_nbfree;
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afs.fs_cstotal.cs_nifree = afs.fs_old_cstotal.cs_nifree;
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afs.fs_cstotal.cs_nffree = afs.fs_old_cstotal.cs_nffree;
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}
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printf("file system: %s\n", name);
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#if BYTE_ORDER == LITTLE_ENDIAN
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if (needswap)
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#else
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if (!needswap)
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#endif
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printf("endian\tbig-endian\n");
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else
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printf("endian\tlittle-endian\n");
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if (printold && afs.fs_old_postblformat == FS_42POSTBLFMT)
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afs.fs_old_nrpos = 8;
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dev_bsize = afs.fs_fsize / fsbtodb(&afs, 1);
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t = afs.fs_time;
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printf("location%lld\tmagic\t%x\ttime\t%s", (long long)sblock_try[i],
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afs.fs_magic, ctime(&t));
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if (is_ufs2)
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i = 4;
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else {
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i = 0;
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if (!printold && afs.fs_old_postblformat != FS_42POSTBLFMT) {
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i++;
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if (afs.fs_old_inodefmt >= FS_44INODEFMT) {
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int max;
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i++;
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max = afs.fs_maxcontig;
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size = afs.fs_contigsumsize;
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if ((max < 2 && size == 0)
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|| (max > 1 && size >= MIN(max, FS_MAXCONTIG)))
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i++;
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}
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}
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}
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printf("id\t[ %x %x ]\n", afs.fs_id[0], afs.fs_id[1]);
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printf("cylgrp\t%s\tinodes\t%s\tfslevel %d\tsoftdep %sabled\n",
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i < 1 ? "static" : "dynamic",
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i < 2 ? "4.2/4.3BSD" : i < 4 ? "4.4BSD" : "FFSv2", i,
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(afs.fs_flags & FS_DOSOFTDEP) ? "en" : "dis");
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printf("nbfree\t%lld\tndir\t%lld\tnifree\t%lld\tnffree\t%lld\n",
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(long long)afs.fs_cstotal.cs_nbfree,
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(long long)afs.fs_cstotal.cs_ndir,
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(long long)afs.fs_cstotal.cs_nifree,
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(long long)afs.fs_cstotal.cs_nffree);
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printf("ncg\t%d\tsize\t%lld\tblocks\t%lld\n",
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afs.fs_ncg, (long long)afs.fs_size, (long long)afs.fs_dsize);
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if (printold)
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printf("ncyl\t%d\n", afs.fs_old_ncyl);
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printf("bsize\t%d\tshift\t%d\tmask\t0x%08x\n",
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afs.fs_bsize, afs.fs_bshift, afs.fs_bmask);
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printf("fsize\t%d\tshift\t%d\tmask\t0x%08x\n",
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afs.fs_fsize, afs.fs_fshift, afs.fs_fmask);
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printf("frag\t%d\tshift\t%d\tfsbtodb\t%d\n",
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afs.fs_frag, afs.fs_fragshift, afs.fs_fsbtodb);
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printf("bpg\t%d\tfpg\t%d\tipg\t%d\n",
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afs.fs_fpg / afs.fs_frag, afs.fs_fpg, afs.fs_ipg);
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printf("minfree\t%d%%\toptim\t%s\tmaxcontig %d\tmaxbpg\t%d\n",
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afs.fs_minfree, afs.fs_optim == FS_OPTSPACE ? "space" : "time",
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afs.fs_maxcontig, afs.fs_maxbpg);
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if (printold) {
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printf("cpg\t%d\trotdelay %dms\trps\t%d\n",
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afs.fs_old_cpg, afs.fs_old_rotdelay, afs.fs_old_rps);
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printf("ntrak\t%d\tnsect\t%d\tnpsect\t%d\tspc\t%d\n",
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afs.fs_spare2, afs.fs_old_nsect, afs.fs_old_npsect,
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afs.fs_old_spc);
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printf("trackskew %d\tinterleave %d\n",
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afs.fs_old_trackskew, afs.fs_old_interleave);
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}
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printf("symlinklen %d\tcontigsumsize %d\n",
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afs.fs_maxsymlinklen, afs.fs_contigsumsize);
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printf("maxfilesize 0x%016llx\n",
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(unsigned long long)afs.fs_maxfilesize);
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printf("nindir\t%d\tinopb\t%d\n", afs.fs_nindir, afs.fs_inopb);
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if (printold)
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printf("nspf\t%d\n", afs.fs_old_nspf);
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printf("avgfilesize %d\tavgfpdir %d\n",
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afs.fs_avgfilesize, afs.fs_avgfpdir);
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printf("sblkno\t%d\tcblkno\t%d\tiblkno\t%d\tdblkno\t%d\n",
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afs.fs_sblkno, afs.fs_cblkno, afs.fs_iblkno, afs.fs_dblkno);
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printf("sbsize\t%d\tcgsize\t%d\n", afs.fs_sbsize, afs.fs_cgsize);
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if (printold)
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printf("offset\t%d\tmask\t0x%08x\n",
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afs.fs_old_cgoffset, afs.fs_old_cgmask);
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printf("csaddr\t%lld\tcssize %d\n",
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(long long)afs.fs_csaddr, afs.fs_cssize);
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if (printold)
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printf("shift\t%d\tmask\t0x%08x\n",
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afs.fs_spare1[0], afs.fs_spare1[1]);
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printf("cgrotor\t%d\tfmod\t%d\tronly\t%d\tclean\t0x%02x\n",
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afs.fs_cgrotor, afs.fs_fmod, afs.fs_ronly, afs.fs_clean);
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if (printold) {
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if (afs.fs_old_cpc != 0)
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printf("blocks available in each of %d rotational "
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"positions", afs.fs_old_nrpos);
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else
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printf("(no rotational position table)\n");
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}
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printf("\ncs[].cs_(nbfree,ndir,nifree,nffree):\n\t");
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afs.fs_csp = calloc(1, afs.fs_cssize);
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for (i = 0, j = 0; i < afs.fs_cssize; i += afs.fs_bsize, j++) {
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size = afs.fs_cssize - i < afs.fs_bsize ?
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afs.fs_cssize - i : afs.fs_bsize;
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ccsp = (struct csum *)((char *)afs.fs_csp + i);
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if (lseek(fd,
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(off_t)(fsbtodb(&afs, (afs.fs_csaddr + j * afs.fs_frag))) *
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dev_bsize, SEEK_SET) == (off_t)-1)
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goto err;
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if (read(fd, ccsp, size) != size)
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goto err;
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if (needswap)
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ffs_csum_swap(ccsp, ccsp, size);
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}
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for (i = 0; i < afs.fs_ncg; i++) {
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struct csum *cs = &afs.fs_cs(&afs, i);
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if (i && i % 4 == 0)
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printf("\n\t");
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printf("(%d,%d,%d,%d) ",
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cs->cs_nbfree, cs->cs_ndir, cs->cs_nifree, cs->cs_nffree);
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}
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printf("\n");
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if (printold && (afs.fs_old_ncyl % afs.fs_old_cpg)) {
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printf("cylinders in last group %d\n",
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i = afs.fs_old_ncyl % afs.fs_old_cpg);
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printf("blocks in last group %d\n",
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i * afs.fs_old_spc / (afs.fs_old_nspf << afs.fs_fragshift));
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}
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printf("\n");
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for (i = 0; i < afs.fs_ncg; i++)
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if (dumpcg(name, fd, i))
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goto err;
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(void)close(fd);
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return 0;
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err: if (fd != -1)
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(void)close(fd);
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warn("%s", name);
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return 1;
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};
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int
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dumpcg(const char *name, int fd, int c)
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{
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off_t cur;
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int i, j;
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time_t t;
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printf("\ncg %d:\n", c);
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if ((cur = lseek(fd, (off_t)(fsbtodb(&afs, cgtod(&afs, c))) * dev_bsize,
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SEEK_SET)) == (off_t)-1)
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return (1);
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if (read(fd, &acg, afs.fs_bsize) != afs.fs_bsize) {
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warnx("%s: error reading cg", name);
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return (1);
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}
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if (needswap)
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ffs_cg_swap(&acg, &acg, &afs);
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t = acg.cg_time;
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printf("magic\t%x\ttell\t%llx\ttime\t%s",
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afs.fs_old_postblformat == FS_42POSTBLFMT ?
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((struct ocg *)&acg)->cg_magic : acg.cg_magic,
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(long long)cur, ctime(&t));
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printf("cgx\t%d\tniblk\t%d\tndblk\t%d\n",
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acg.cg_cgx, acg.cg_niblk, acg.cg_ndblk);
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printf("nbfree\t%d\tndir\t%d\tnifree\t%d\tnffree\t%d\n",
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acg.cg_cs.cs_nbfree, acg.cg_cs.cs_ndir,
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acg.cg_cs.cs_nifree, acg.cg_cs.cs_nffree);
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printf("rotor\t%d\tirotor\t%d\tfrotor\t%d\nfrsum",
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acg.cg_rotor, acg.cg_irotor, acg.cg_frotor);
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for (i = 1, j = 0; i < afs.fs_frag; i++) {
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printf("\t%d", acg.cg_frsum[i]);
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j += i * acg.cg_frsum[i];
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}
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printf("\nsum of frsum: %d", j);
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if (afs.fs_contigsumsize > 0) {
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for (i = 1; i < afs.fs_contigsumsize; i++) {
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if ((i - 1) % 8 == 0)
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printf("\nclusters %d-%d:", i,
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afs.fs_contigsumsize - 1 < i + 7 ?
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afs.fs_contigsumsize - 1 : i + 7);
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printf("\t%d", cg_clustersum(&acg, 0)[i]);
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}
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printf("\nclusters size %d and over: %d\n",
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afs.fs_contigsumsize,
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cg_clustersum(&acg, 0)[afs.fs_contigsumsize]);
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printf("clusters free:\t");
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pbits(cg_clustersfree(&acg, 0), acg.cg_nclusterblks);
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} else
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printf("\n");
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printf("iused:\t");
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pbits(cg_inosused(&acg, 0), afs.fs_ipg);
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printf("free:\t");
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pbits(cg_blksfree(&acg, 0), afs.fs_fpg);
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return (0);
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};
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void
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pbits(void *vp, int max)
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{
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int i;
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char *p;
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int count, j;
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for (count = i = 0, p = vp; i < max; i++)
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if (isset(p, i)) {
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if (count)
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printf(",%s", count % 6 ? " " : "\n\t");
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count++;
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printf("%d", i);
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j = i;
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while ((i+1)<max && isset(p, i+1))
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i++;
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if (i != j)
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printf("-%d", i);
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}
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printf("\n");
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}
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void
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usage(void)
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{
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(void)fprintf(stderr, "usage: dumpfs [-F] filesys | device [...]\n");
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exit(1);
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}
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int
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openpartition(const char *name, int flags, char *device, size_t devicelen)
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{
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char rawspec[MAXPATHLEN], *p;
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struct fstab *fs;
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int fd, oerrno;
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fs = getfsfile(name);
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if (fs) {
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if ((p = strrchr(fs->fs_spec, '/')) != NULL) {
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snprintf(rawspec, sizeof(rawspec), "%.*s/r%s",
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(int)(p - fs->fs_spec), fs->fs_spec, p + 1);
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name = rawspec;
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} else
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name = fs->fs_spec;
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}
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fd = opendisk(name, flags, device, devicelen, 0);
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if (fd == -1 && errno == ENOENT) {
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oerrno = errno;
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strlcpy(device, name, devicelen);
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errno = oerrno;
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}
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return (fd);
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}
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