NetBSD/usr.sbin/dumpfs/dumpfs.c

564 lines
15 KiB
C

/* $NetBSD: dumpfs.c,v 1.38 2003/08/30 12:48:11 wiz Exp $ */
/*
* Copyright (c) 1983, 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1983, 1992, 1993\n\
The Regents of the University of California. All rights reserved.\n");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)dumpfs.c 8.5 (Berkeley) 4/29/95";
#else
__RCSID("$NetBSD: dumpfs.c,v 1.38 2003/08/30 12:48:11 wiz Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/time.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ufs/ufs_bswap.h>
#include <ufs/ffs/fs.h>
#include <ufs/ffs/ffs_extern.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <fstab.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <util.h>
union {
struct fs fs;
char pad[MAXBSIZE];
} fsun;
#define afs fsun.fs
union {
struct cg cg;
char pad[MAXBSIZE];
} cgun;
#define acg cgun.cg
#define OPT_FLAG(ch) (1 << ((ch) & 31))
#define ISOPT(opt) (opt_flags & (opt))
#define opt_superblock OPT_FLAG('s')
#define opt_cg_summary OPT_FLAG('m')
#define opt_cg_info OPT_FLAG('c')
#define opt_inodes OPT_FLAG('i')
#define opt_verbose OPT_FLAG('v')
#define DFLT_OPTS (opt_superblock | opt_cg_summary | opt_cg_info)
long dev_bsize = 1;
int needswap, printold, is_ufs2;
int Fflag;
uint opt_flags;
int dumpfs(const char *);
int print_superblock(const char *, int, off_t);
int print_cgsum(const char *, int);
int print_cginfo(const char *, int);
int print_inodes(const char *, int);
int dumpcg(const char *, int, int);
int main(int, char **);
int openpartition(const char *, int, char *, size_t);
void pbits(int, void *, int);
void usage(void);
void swap_cg(struct cg *);
void print_ufs1_inode(int, int, void *);
void print_ufs2_inode(int, int, void *);
int
main(int argc, char *argv[])
{
int ch, eval;
while ((ch = getopt(argc, argv, "Fcimsv")) != -1)
switch(ch) {
case 'c': /* cylinder group info */
case 'i': /* actual inodes */
case 'm': /* cylinder group summary */
case 's': /* superblock */
case 'v': /* more verbose */
opt_flags |= OPT_FLAG(ch);
break;
case 'F': /* File (not device) */
Fflag = 1;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (opt_flags == 0)
opt_flags = DFLT_OPTS;
if (argc < 1)
usage();
for (eval = 0; *argv; ++argv) {
eval |= dumpfs(*argv);
printf("\n");
}
exit(eval);
}
int
dumpfs(const char *name)
{
const static off_t sblock_try[] = SBLOCKSEARCH;
char device[MAXPATHLEN];
int fd, i;
int rval = 1;
if (Fflag)
fd = open(name, O_RDONLY);
else {
fd = openpartition(name, O_RDONLY, device, sizeof(device));
name = device;
}
if (fd == -1)
goto err;
for (i = 0; ; i++) {
if (sblock_try[i] == -1) {
warnx("%s: could not find superblock, skipped", name);
return 1;
}
if (lseek(fd, sblock_try[i], SEEK_SET) == (off_t)-1)
continue;
if (read(fd, &afs, SBLOCKSIZE) != SBLOCKSIZE)
continue;
switch(afs.fs_magic) {
case FS_UFS2_MAGIC:
is_ufs2 = 1;
break;
case FS_UFS1_MAGIC:
break;
case FS_UFS2_MAGIC_SWAPPED:
is_ufs2 = 1;
needswap = 1;
break;
case FS_UFS1_MAGIC_SWAPPED:
needswap = 1;
break;
default:
continue;
}
break;
}
if (needswap)
ffs_sb_swap(&afs, &afs);
printold = (afs.fs_magic == FS_UFS1_MAGIC &&
(afs.fs_old_flags & FS_FLAGS_UPDATED) == 0);
if (printold) {
afs.fs_flags = afs.fs_old_flags;
afs.fs_maxbsize = afs.fs_bsize;
afs.fs_time = afs.fs_old_time;
afs.fs_size = afs.fs_old_size;
afs.fs_dsize = afs.fs_old_dsize;
afs.fs_csaddr = afs.fs_old_csaddr;
afs.fs_cstotal.cs_ndir = afs.fs_old_cstotal.cs_ndir;
afs.fs_cstotal.cs_nbfree = afs.fs_old_cstotal.cs_nbfree;
afs.fs_cstotal.cs_nifree = afs.fs_old_cstotal.cs_nifree;
afs.fs_cstotal.cs_nffree = afs.fs_old_cstotal.cs_nffree;
}
if (printold && afs.fs_old_postblformat == FS_42POSTBLFMT)
afs.fs_old_nrpos = 8;
dev_bsize = afs.fs_fsize / fsbtodb(&afs, 1);
rval = 0;
printf("file system: %s\n", name);
if (ISOPT(opt_superblock))
rval = print_superblock(name, fd, sblock_try[i]);
if (rval == 0 && ISOPT(opt_cg_summary))
rval = print_cgsum(name, fd);
if (rval == 0 && ISOPT(opt_cg_info))
rval = print_cginfo(name, fd);
if (rval == 0 && ISOPT(opt_inodes))
rval = print_inodes(name, fd);
err:
if (fd != -1)
(void)close(fd);
if (rval)
warn("%s", name);
return rval;
}
int
print_superblock(const char *name, int fd, off_t sblock)
{
int i, size;
time_t t;
#if BYTE_ORDER == LITTLE_ENDIAN
if (needswap)
#else
if (!needswap)
#endif
printf("endian\tbig-endian\n");
else
printf("endian\tlittle-endian\n");
t = afs.fs_time;
printf("location%lld\tmagic\t%x\ttime\t%s", (long long)sblock,
afs.fs_magic, ctime(&t));
if (is_ufs2)
i = 4;
else {
i = 0;
if (!printold && afs.fs_old_postblformat != FS_42POSTBLFMT) {
i++;
if (afs.fs_old_inodefmt >= FS_44INODEFMT) {
int max;
i++;
max = afs.fs_maxcontig;
size = afs.fs_contigsumsize;
if ((max < 2 && size == 0)
|| (max > 1 && size >= MIN(max, FS_MAXCONTIG)))
i++;
}
}
}
printf("id\t[ %x %x ]\n", afs.fs_id[0], afs.fs_id[1]);
printf("cylgrp\t%s\tinodes\t%s\tfslevel %d\tsoftdep %sabled\n",
i < 1 ? "static" : "dynamic",
i < 2 ? "4.2/4.3BSD" : i < 4 ? "4.4BSD" : "FFSv2", i,
(afs.fs_flags & FS_DOSOFTDEP) ? "en" : "dis");
printf("nbfree\t%lld\tndir\t%lld\tnifree\t%lld\tnffree\t%lld\n",
(long long)afs.fs_cstotal.cs_nbfree,
(long long)afs.fs_cstotal.cs_ndir,
(long long)afs.fs_cstotal.cs_nifree,
(long long)afs.fs_cstotal.cs_nffree);
printf("ncg\t%d\tsize\t%lld\tblocks\t%lld\n",
afs.fs_ncg, (long long)afs.fs_size, (long long)afs.fs_dsize);
if (printold)
printf("ncyl\t%d\n", afs.fs_old_ncyl);
printf("bsize\t%d\tshift\t%d\tmask\t0x%08x\n",
afs.fs_bsize, afs.fs_bshift, afs.fs_bmask);
printf("fsize\t%d\tshift\t%d\tmask\t0x%08x\n",
afs.fs_fsize, afs.fs_fshift, afs.fs_fmask);
printf("frag\t%d\tshift\t%d\tfsbtodb\t%d\n",
afs.fs_frag, afs.fs_fragshift, afs.fs_fsbtodb);
printf("bpg\t%d\tfpg\t%d\tipg\t%d\n",
afs.fs_fpg / afs.fs_frag, afs.fs_fpg, afs.fs_ipg);
printf("minfree\t%d%%\toptim\t%s\tmaxcontig %d\tmaxbpg\t%d\n",
afs.fs_minfree, afs.fs_optim == FS_OPTSPACE ? "space" : "time",
afs.fs_maxcontig, afs.fs_maxbpg);
if (printold) {
printf("cpg\t%d\trotdelay %dms\trps\t%d\n",
afs.fs_old_cpg, afs.fs_old_rotdelay, afs.fs_old_rps);
printf("ntrak\t%d\tnsect\t%d\tnpsect\t%d\tspc\t%d\n",
afs.fs_spare2, afs.fs_old_nsect, afs.fs_old_npsect,
afs.fs_old_spc);
printf("trackskew %d\tinterleave %d\n",
afs.fs_old_trackskew, afs.fs_old_interleave);
}
printf("symlinklen %d\tcontigsumsize %d\n",
afs.fs_maxsymlinklen, afs.fs_contigsumsize);
printf("maxfilesize 0x%016llx\n",
(unsigned long long)afs.fs_maxfilesize);
printf("nindir\t%d\tinopb\t%d\n", afs.fs_nindir, afs.fs_inopb);
if (printold)
printf("nspf\t%d\n", afs.fs_old_nspf);
printf("avgfilesize %d\tavgfpdir %d\n",
afs.fs_avgfilesize, afs.fs_avgfpdir);
printf("sblkno\t%d\tcblkno\t%d\tiblkno\t%d\tdblkno\t%d\n",
afs.fs_sblkno, afs.fs_cblkno, afs.fs_iblkno, afs.fs_dblkno);
printf("sbsize\t%d\tcgsize\t%d\n", afs.fs_sbsize, afs.fs_cgsize);
if (printold)
printf("offset\t%d\tmask\t0x%08x\n",
afs.fs_old_cgoffset, afs.fs_old_cgmask);
printf("csaddr\t%lld\tcssize %d\n",
(long long)afs.fs_csaddr, afs.fs_cssize);
if (printold)
printf("shift\t%d\tmask\t0x%08x\n",
afs.fs_spare1[0], afs.fs_spare1[1]);
printf("cgrotor\t%d\tfmod\t%d\tronly\t%d\tclean\t0x%02x\n",
afs.fs_cgrotor, afs.fs_fmod, afs.fs_ronly, afs.fs_clean);
if (printold) {
if (afs.fs_old_cpc != 0)
printf("blocks available in each of %d rotational "
"positions", afs.fs_old_nrpos);
else
printf("(no rotational position table)\n");
}
return 0;
}
int
print_cgsum(const char *name, int fd)
{
struct csum *ccsp;
int i, j, size;
afs.fs_csp = calloc(1, afs.fs_cssize);
for (i = 0, j = 0; i < afs.fs_cssize; i += afs.fs_bsize, j++) {
size = afs.fs_cssize - i < afs.fs_bsize ?
afs.fs_cssize - i : afs.fs_bsize;
ccsp = (struct csum *)((char *)afs.fs_csp + i);
if (lseek(fd,
(off_t)(fsbtodb(&afs, (afs.fs_csaddr + j * afs.fs_frag))) *
dev_bsize, SEEK_SET) == (off_t)-1)
return 1;
if (read(fd, ccsp, size) != size)
return 1;
if (needswap)
ffs_csum_swap(ccsp, ccsp, size);
}
printf("\ncs[].cs_(nbfree,ndir,nifree,nffree):\n\t");
for (i = 0; i < afs.fs_ncg; i++) {
struct csum *cs = &afs.fs_cs(&afs, i);
if (i && i % 4 == 0)
printf("\n\t");
printf("(%d,%d,%d,%d) ",
cs->cs_nbfree, cs->cs_ndir, cs->cs_nifree, cs->cs_nffree);
}
if (i % 4 == 0)
printf("\n");
if (printold && (afs.fs_old_ncyl % afs.fs_old_cpg)) {
printf("cylinders in last group %d\n",
i = afs.fs_old_ncyl % afs.fs_old_cpg);
printf("blocks in last group %d\n",
i * afs.fs_old_spc / (afs.fs_old_nspf << afs.fs_fragshift));
}
printf("\n");
free(afs.fs_csp);
afs.fs_csp = NULL;
return 0;
}
int
print_cginfo(const char *name, int fd)
{
int i;
for (i = 0; i < afs.fs_ncg; i++)
if (dumpcg(name, fd, i))
return 1;
return 0;
}
int
print_inodes(const char *name, int fd)
{
void *ino_buf = malloc(afs.fs_bsize);
void (*print_inode)(int, int, void *);
int i, inum;
if (ino_buf == 0)
return 1;
print_inode = is_ufs2 ? print_ufs2_inode : print_ufs1_inode;
for (inum = 0; inum < afs.fs_ncg * afs.fs_ipg; inum += afs.fs_inopb) {
if (pread(fd, ino_buf, afs.fs_bsize,
ino_to_fsba(&afs, inum) * afs.fs_fsize) != afs.fs_bsize)
return 1;
for (i = 0; i < afs.fs_inopb; i++)
print_inode(inum + i, i, ino_buf);
}
free(ino_buf);
return 0;
}
int
dumpcg(const char *name, int fd, int c)
{
off_t cur;
int i, j;
time_t t;
printf("\ncg %d:\n", c);
if ((cur = lseek(fd, (off_t)(fsbtodb(&afs, cgtod(&afs, c))) * dev_bsize,
SEEK_SET)) == (off_t)-1)
return (1);
if (read(fd, &acg, afs.fs_bsize) != afs.fs_bsize) {
warnx("%s: error reading cg", name);
return (1);
}
if (needswap)
ffs_cg_swap(&acg, &acg, &afs);
t = acg.cg_time;
printf("magic\t%x\ttell\t%llx\ttime\t%s",
afs.fs_old_postblformat == FS_42POSTBLFMT ?
((struct ocg *)&acg)->cg_magic : acg.cg_magic,
(long long)cur, ctime(&t));
printf("cgx\t%d\tniblk\t%d\tndblk\t%d\n",
acg.cg_cgx, acg.cg_niblk, acg.cg_ndblk);
printf("nbfree\t%d\tndir\t%d\tnifree\t%d\tnffree\t%d\n",
acg.cg_cs.cs_nbfree, acg.cg_cs.cs_ndir,
acg.cg_cs.cs_nifree, acg.cg_cs.cs_nffree);
printf("rotor\t%d\tirotor\t%d\tfrotor\t%d\nfrsum",
acg.cg_rotor, acg.cg_irotor, acg.cg_frotor);
for (i = 1, j = 0; i < afs.fs_frag; i++) {
printf("\t%d", acg.cg_frsum[i]);
j += i * acg.cg_frsum[i];
}
printf("\nsum of frsum: %d", j);
if (afs.fs_contigsumsize > 0) {
for (i = 1; i < afs.fs_contigsumsize; i++) {
if ((i - 1) % 8 == 0)
printf("\nclusters %d-%d:", i,
afs.fs_contigsumsize - 1 < i + 7 ?
afs.fs_contigsumsize - 1 : i + 7);
printf("\t%d", cg_clustersum(&acg, 0)[i]);
}
printf("\nclusters size %d and over: %d\n",
afs.fs_contigsumsize,
cg_clustersum(&acg, 0)[afs.fs_contigsumsize]);
printf("clusters free:\t");
pbits(0, cg_clustersfree(&acg, 0), acg.cg_nclusterblks);
} else
printf("\n");
printf("iused:\t");
pbits(c * afs.fs_ipg, cg_inosused(&acg, 0), afs.fs_ipg);
printf("free:\t");
pbits(0, cg_blksfree(&acg, 0), afs.fs_fpg);
return (0);
}
void
print_ufs1_inode(int inum, int i_off, void *ibuf)
{
struct ufs1_dinode *i = ibuf;
i += i_off;
if (inum == 0)
printf("\n inode: mode nlink size"
" ctime.nsec flags blocks"
" generation uid gid\n");
if (i->di_mode == 0 && i->di_nlink == 0 && !ISOPT(opt_verbose))
return;
printf("%8u: %6o %6d %20" PRIu64 " %10u.%09u %8x %10u %8x %10u %10u\n",
inum, i->di_mode, i->di_nlink, i->di_size,
i->di_ctime, i->di_ctimensec, i->di_flags, i->di_blocks,
i->di_gen, i->di_uid, i->di_gid);
}
void
print_ufs2_inode(int inum, int i_off, void *ibuf)
{
struct ufs2_dinode *i = ibuf;
i += i_off;
if (inum == 0)
printf("\n inode: mode nlink size"
" ctime.nsec flags blocks"
" generation uid gid\n");
if (i->di_mode == 0 && i->di_nlink == 0 && !ISOPT(opt_verbose))
return;
printf("%8u: %6o %6d %20" PRIu64 " %10" PRIu64 ".%09u %8x %10" PRIu64 " %8x %10u %10u\n",
inum, i->di_mode, i->di_nlink, i->di_size,
i->di_ctime, i->di_ctimensec, i->di_flags, i->di_blocks,
i->di_gen, i->di_uid, i->di_gid);
}
void
pbits(int offset, void *vp, int max)
{
int i;
char *p;
int count, j;
for (count = i = 0, p = vp; i < max; i++)
if (isset(p, i)) {
if (count)
printf(",%s", count % 6 ? " " : "\n\t");
count++;
printf("%d", offset + i);
j = i;
while ((i+1)<max && isset(p, i+1))
i++;
if (i != j)
printf("-%d", offset + i);
}
printf("\n");
}
void
usage(void)
{
(void)fprintf(stderr, "usage: dumpfs [-cFimsv] filesys | device [...]\n");
exit(1);
}
int
openpartition(const char *name, int flags, char *device, size_t devicelen)
{
char rawspec[MAXPATHLEN], *p;
struct fstab *fs;
int fd, oerrno;
fs = getfsfile(name);
if (fs) {
if ((p = strrchr(fs->fs_spec, '/')) != NULL) {
snprintf(rawspec, sizeof(rawspec), "%.*s/r%s",
(int)(p - fs->fs_spec), fs->fs_spec, p + 1);
name = rawspec;
} else
name = fs->fs_spec;
}
fd = opendisk(name, flags, device, devicelen, 0);
if (fd == -1 && errno == ENOENT) {
oerrno = errno;
strlcpy(device, name, devicelen);
errno = oerrno;
}
return (fd);
}