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freebsd/sbin/ffsinfo/ffsinfo.c

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/*
* Copyright (c) 2000 Christoph Herrmann, Thomas-Henning von Kamptz
* Copyright (c) 1980, 1989, 1993 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Christoph Herrmann and Thomas-Henning von Kamptz, Munich and Frankfurt.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgment:
* This product includes software developed by the University of
* California, Berkeley and its contributors, as well as Christoph
* Herrmann and Thomas-Henning von Kamptz.
* 4. 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.
*
* $TSHeader: src/sbin/ffsinfo/ffsinfo.c,v 1.4 2000/12/12 19:30:55 tomsoft Exp $
*
*/
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 2000 Christoph Herrmann, Thomas-Henning von Kamptz\n\
Copyright (c) 1980, 1989, 1993 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
/* ********************************************************** INCLUDES ***** */
#include <sys/param.h>
#include <sys/disklabel.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ffs/fs.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <libufs.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "debug.h"
/* *********************************************************** GLOBALS ***** */
#ifdef FS_DEBUG
int _dbg_lvl_ = (DL_INFO); /* DL_TRC */
#endif /* FS_DEBUG */
struct uufsd disk;
#define sblock disk.d_fs
#define acg disk.d_cg
static union {
struct fs fs;
char pad[SBLOCKSIZE];
} fsun;
#define osblock fsun.fs
static char i1blk[MAXBSIZE];
static char i2blk[MAXBSIZE];
static char i3blk[MAXBSIZE];
static struct csum *fscs;
/* ******************************************************** PROTOTYPES ***** */
static void usage(void);
static void dump_whole_ufs1_inode(ino_t, int);
static void dump_whole_ufs2_inode(ino_t, int);
#define DUMP_WHOLE_INODE(A,B) \
( disk.d_ufs == 1 \
? dump_whole_ufs1_inode((A),(B)) : dump_whole_ufs2_inode((A),(B)) )
/* ************************************************************** main ***** */
/*
* ffsinfo(8) is a tool to dump all metadata of a file system. It helps to find
* errors is the file system much easier. You can run ffsinfo before and after
* an fsck(8), and compare the two ascii dumps easy with diff, and you see
* directly where the problem is. You can control how much detail you want to
* see with some command line arguments. You can also easy check the status
* of a file system, like is there is enough space for growing a file system,
* or how many active snapshots do we have. It provides much more detailed
* information then dumpfs. Snapshots, as they are very new, are not really
* supported. They are just mentioned currently, but it is planned to run
* also over active snapshots, to even get that output.
*/
int
main(int argc, char **argv)
{
DBG_FUNC("main")
char *device, *special;
int ch;
size_t len;
struct stat st;
struct csum *dbg_csp;
int dbg_csc;
char dbg_line[80];
int cylno,i;
int cfg_cg, cfg_in, cfg_lv;
int cg_start, cg_stop;
ino_t in;
char *out_file;
DBG_ENTER;
cfg_lv = 0xff;
cfg_in = -2;
cfg_cg = -2;
out_file = "-";
while ((ch = getopt(argc, argv, "g:i:l:o:")) != -1) {
switch (ch) {
case 'g':
cfg_cg = strtol(optarg, NULL, 0);
if (errno == EINVAL || errno == ERANGE)
err(1, "%s", optarg);
if (cfg_cg < -1)
usage();
break;
case 'i':
cfg_in = strtol(optarg, NULL, 0);
if (errno == EINVAL || errno == ERANGE)
err(1, "%s", optarg);
if (cfg_in < 0)
usage();
break;
case 'l':
cfg_lv = strtol(optarg, NULL, 0);
if (errno == EINVAL||errno == ERANGE)
err(1, "%s", optarg);
if (cfg_lv < 0x1 || cfg_lv > 0x3ff)
usage();
break;
case 'o':
free(out_file);
out_file = strdup(optarg);
if (out_file == NULL)
errx(1, "strdup failed");
break;
case '?':
/* FALLTHROUGH */
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc != 1)
usage();
device = *argv;
/*
* Now we try to guess the (raw)device name.
*/
if (0 == strrchr(device, '/') && stat(device, &st) == -1) {
/*-
* No path prefix was given, so try in this order:
* /dev/r%s
* /dev/%s
* /dev/vinum/r%s
* /dev/vinum/%s.
*
* FreeBSD now doesn't distinguish between raw and block
* devices any longer, but it should still work this way.
*/
len = strlen(device) + strlen(_PATH_DEV) + 2 + strlen("vinum/");
special = (char *)malloc(len);
if (special == NULL)
errx(1, "malloc failed");
snprintf(special, len, "%sr%s", _PATH_DEV, device);
if (stat(special, &st) == -1) {
snprintf(special, len, "%s%s", _PATH_DEV, device);
if (stat(special, &st) == -1) {
snprintf(special, len, "%svinum/r%s",
_PATH_DEV, device);
if (stat(special, &st) == -1)
/* For now this is the 'last resort' */
snprintf(special, len, "%svinum/%s",
_PATH_DEV, device);
}
}
device = special;
}
if (ufs_disk_fillout(&disk, device) == -1)
err(1, "ufs_disk_fillout(%s) failed: %s", device, disk.d_error);
DBG_OPEN(out_file); /* already here we need a superblock */
if (cfg_lv & 0x001)
DBG_DUMP_FS(&sblock, "primary sblock");
/* Determine here what cylinder groups to dump */
if (cfg_cg==-2) {
cg_start = 0;
cg_stop = sblock.fs_ncg;
} else if (cfg_cg == -1) {
cg_start = sblock.fs_ncg - 1;
cg_stop = sblock.fs_ncg;
} else if (cfg_cg < sblock.fs_ncg) {
cg_start = cfg_cg;
cg_stop = cfg_cg + 1;
} else {
cg_start = sblock.fs_ncg;
cg_stop = sblock.fs_ncg;
}
if (cfg_lv & 0x004) {
fscs = (struct csum *)calloc((size_t)1,
(size_t)sblock.fs_cssize);
if (fscs == NULL)
errx(1, "calloc failed");
/* get the cylinder summary into the memory ... */
for (i = 0; i < sblock.fs_cssize; i += sblock.fs_bsize) {
if (bread(&disk, fsbtodb(&sblock,
sblock.fs_csaddr + numfrags(&sblock, i)),
(void *)(((char *)fscs)+i),
(size_t)(sblock.fs_cssize-i < sblock.fs_bsize ?
sblock.fs_cssize - i : sblock.fs_bsize)) == -1)
err(1, "bread: %s", disk.d_error);
}
dbg_csp = fscs;
/* ... and dump it */
for(dbg_csc=0; dbg_csc<sblock.fs_ncg; dbg_csc++) {
snprintf(dbg_line, sizeof(dbg_line),
"%d. csum in fscs", dbg_csc);
DBG_DUMP_CSUM(&sblock,
dbg_line,
dbg_csp++);
}
}
if (cfg_lv & 0xf8) {
/* for each requested cylinder group ... */
for (cylno = cg_start; cylno < cg_stop; cylno++) {
snprintf(dbg_line, sizeof(dbg_line), "cgr %d", cylno);
if (cfg_lv & 0x002) {
/* dump the superblock copies */
if (bread(&disk, fsbtodb(&sblock,
cgsblock(&sblock, cylno)),
(void *)&osblock, SBLOCKSIZE) == -1)
err(1, "bread: %s", disk.d_error);
DBG_DUMP_FS(&osblock, dbg_line);
}
/*
* Read the cylinder group and dump whatever was
* requested.
*/
if (bread(&disk, fsbtodb(&sblock,
cgtod(&sblock, cylno)), (void *)&acg,
(size_t)sblock.fs_cgsize) == -1)
err(1, "bread: %s", disk.d_error);
if (cfg_lv & 0x008)
DBG_DUMP_CG(&sblock, dbg_line, &acg);
if (cfg_lv & 0x010)
DBG_DUMP_INMAP(&sblock, dbg_line, &acg);
if (cfg_lv & 0x020)
DBG_DUMP_FRMAP(&sblock, dbg_line, &acg);
if (cfg_lv & 0x040) {
DBG_DUMP_CLMAP(&sblock, dbg_line, &acg);
DBG_DUMP_CLSUM(&sblock, dbg_line, &acg);
}
#ifdef NOT_CURRENTLY
/*
* See the comment in sbin/growfs/debug.c for why this
* is currently disabled, and what needs to be done to
* re-enable it.
*/
if (disk.d_ufs == 1 && cfg_lv & 0x080)
DBG_DUMP_SPTBL(&sblock, dbg_line, &acg);
#endif
}
}
if (cfg_lv & 0x300) {
/* Dump the requested inode(s) */
if (cfg_in != -2)
DUMP_WHOLE_INODE((ino_t)cfg_in, cfg_lv);
else {
for (in = cg_start * sblock.fs_ipg;
in < (ino_t)cg_stop * sblock.fs_ipg;
in++)
DUMP_WHOLE_INODE(in, cfg_lv);
}
}
DBG_CLOSE;
DBG_LEAVE;
return 0;
}
/* ********************************************** dump_whole_ufs1_inode ***** */
/*
* Here we dump a list of all blocks allocated by this inode. We follow
* all indirect blocks.
*/
void
dump_whole_ufs1_inode(ino_t inode, int level)
{
DBG_FUNC("dump_whole_ufs1_inode")
struct ufs1_dinode *ino;
int rb, mode;
unsigned int ind2ctr, ind3ctr;
ufs1_daddr_t *ind2ptr, *ind3ptr;
char comment[80];
DBG_ENTER;
/*
* Read the inode from disk/cache.
*/
if (getino(&disk, (void **)&ino, inode, &mode) == -1)
err(1, "getino: %s", disk.d_error);
if(ino->di_nlink==0) {
DBG_LEAVE;
return; /* inode not in use */
}
/*
* Dump the main inode structure.
*/
snprintf(comment, sizeof(comment), "Inode 0x%08x", inode);
if (level & 0x100) {
DBG_DUMP_INO(&sblock,
comment,
ino);
}
if (!(level & 0x200)) {
DBG_LEAVE;
return;
}
/*
* Ok, now prepare for dumping all direct and indirect pointers.
*/
rb=howmany(ino->di_size, sblock.fs_bsize)-NDADDR;
if(rb>0) {
/*
* Dump single indirect block.
*/
if (bread(&disk, fsbtodb(&sblock, ino->di_ib[0]), (void *)&i1blk,
(size_t)sblock.fs_bsize) == -1) {
err(1, "bread: %s", disk.d_error);
}
snprintf(comment, sizeof(comment), "Inode 0x%08x: indirect 0",
inode);
DBG_DUMP_IBLK(&sblock,
comment,
i1blk,
(size_t)rb);
rb-=howmany(sblock.fs_bsize, sizeof(ufs1_daddr_t));
}
if(rb>0) {
/*
* Dump double indirect blocks.
*/
if (bread(&disk, fsbtodb(&sblock, ino->di_ib[1]), (void *)&i2blk,
(size_t)sblock.fs_bsize) == -1) {
err(1, "bread: %s", disk.d_error);
}
snprintf(comment, sizeof(comment), "Inode 0x%08x: indirect 1",
inode);
DBG_DUMP_IBLK(&sblock,
comment,
i2blk,
howmany(rb, howmany(sblock.fs_bsize, sizeof(ufs1_daddr_t))));
for(ind2ctr=0; ((ind2ctr < howmany(sblock.fs_bsize,
sizeof(ufs1_daddr_t))) && (rb>0)); ind2ctr++) {
ind2ptr=&((ufs1_daddr_t *)(void *)&i2blk)[ind2ctr];
if (bread(&disk, fsbtodb(&sblock, *ind2ptr), (void *)&i1blk,
(size_t)sblock.fs_bsize) == -1) {
err(1, "bread: %s", disk.d_error);
}
snprintf(comment, sizeof(comment),
"Inode 0x%08x: indirect 1->%d", inode, ind2ctr);
DBG_DUMP_IBLK(&sblock,
comment,
i1blk,
(size_t)rb);
rb-=howmany(sblock.fs_bsize, sizeof(ufs1_daddr_t));
}
}
if(rb>0) {
/*
* Dump triple indirect blocks.
*/
if (bread(&disk, fsbtodb(&sblock, ino->di_ib[2]), (void *)&i3blk,
(size_t)sblock.fs_bsize) == -1) {
err(1, "bread: %s", disk.d_error);
}
snprintf(comment, sizeof(comment), "Inode 0x%08x: indirect 2",
inode);
#define SQUARE(a) ((a)*(a))
DBG_DUMP_IBLK(&sblock,
comment,
i3blk,
howmany(rb,
SQUARE(howmany(sblock.fs_bsize, sizeof(ufs1_daddr_t)))));
#undef SQUARE
for(ind3ctr=0; ((ind3ctr<howmany(sblock.fs_bsize,
sizeof(ufs1_daddr_t)))&&(rb>0)); ind3ctr++) {
ind3ptr=&((ufs1_daddr_t *)(void *)&i3blk)[ind3ctr];
if (bread(&disk, fsbtodb(&sblock, *ind3ptr), (void *)&i2blk,
(size_t)sblock.fs_bsize) == -1) {
err(1, "bread: %s", disk.d_error);
}
snprintf(comment, sizeof(comment),
"Inode 0x%08x: indirect 2->%d", inode, ind3ctr);
DBG_DUMP_IBLK(&sblock,
comment,
i2blk,
howmany(rb,
howmany(sblock.fs_bsize, sizeof(ufs1_daddr_t))));
for(ind2ctr=0; ((ind2ctr < howmany(sblock.fs_bsize,
sizeof(ufs1_daddr_t)))&&(rb>0)); ind2ctr++) {
ind2ptr=&((ufs1_daddr_t *)(void *)&i2blk)
[ind2ctr];
if (bread(&disk, fsbtodb(&sblock, *ind2ptr),
(void *)&i1blk, (size_t)sblock.fs_bsize)
== -1) {
err(1, "bread: %s", disk.d_error);
}
snprintf(comment, sizeof(comment),
"Inode 0x%08x: indirect 2->%d->%d", inode,
ind3ctr, ind3ctr);
DBG_DUMP_IBLK(&sblock,
comment,
i1blk,
(size_t)rb);
rb-=howmany(sblock.fs_bsize,
sizeof(ufs1_daddr_t));
}
}
}
DBG_LEAVE;
return;
}
/* ********************************************** dump_whole_ufs2_inode ***** */
/*
* Here we dump a list of all blocks allocated by this inode. We follow
* all indirect blocks.
*/
void
dump_whole_ufs2_inode(ino_t inode, int level)
{
DBG_FUNC("dump_whole_ufs2_inode")
struct ufs2_dinode *ino;
int rb, mode;
unsigned int ind2ctr, ind3ctr;
ufs2_daddr_t *ind2ptr, *ind3ptr;
char comment[80];
DBG_ENTER;
/*
* Read the inode from disk/cache.
*/
if (getino(&disk, (void **)&ino, inode, &mode) == -1)
err(1, "getino: %s", disk.d_error);
if (ino->di_nlink == 0) {
DBG_LEAVE;
return; /* inode not in use */
}
/*
* Dump the main inode structure.
*/
snprintf(comment, sizeof(comment), "Inode 0x%08x", inode);
if (level & 0x100) {
DBG_DUMP_INO(&sblock, comment, ino);
}
if (!(level & 0x200)) {
DBG_LEAVE;
return;
}
/*
* Ok, now prepare for dumping all direct and indirect pointers.
*/
rb = howmany(ino->di_size, sblock.fs_bsize) - NDADDR;
if (rb > 0) {
/*
* Dump single indirect block.
*/
if (bread(&disk, fsbtodb(&sblock, ino->di_ib[0]), (void *)&i1blk,
(size_t)sblock.fs_bsize) == -1) {
err(1, "bread: %s", disk.d_error);
}
snprintf(comment, sizeof(comment), "Inode 0x%08x: indirect 0", inode);
DBG_DUMP_IBLK(&sblock, comment, i1blk, (size_t)rb);
rb -= howmany(sblock.fs_bsize, sizeof(ufs2_daddr_t));
}
if (rb > 0) {
/*
* Dump double indirect blocks.
*/
if (bread(&disk, fsbtodb(&sblock, ino->di_ib[1]), (void *)&i2blk,
(size_t)sblock.fs_bsize) == -1) {
err(1, "bread: %s", disk.d_error);
}
snprintf(comment, sizeof(comment), "Inode 0x%08x: indirect 1", inode);
DBG_DUMP_IBLK(&sblock,
comment,
i2blk,
howmany(rb, howmany(sblock.fs_bsize, sizeof(ufs2_daddr_t))));
for (ind2ctr = 0; ((ind2ctr < howmany(sblock.fs_bsize,
sizeof(ufs2_daddr_t))) && (rb>0)); ind2ctr++) {
ind2ptr = &((ufs2_daddr_t *)(void *)&i2blk)[ind2ctr];
if (bread(&disk, fsbtodb(&sblock, *ind2ptr), (void *)&i1blk,
(size_t)sblock.fs_bsize) == -1) {
err(1, "bread: %s", disk.d_error);
}
snprintf(comment, sizeof(comment),
"Inode 0x%08x: indirect 1->%d", inode, ind2ctr);
DBG_DUMP_IBLK(&sblock, comment, i1blk, (size_t)rb);
rb -= howmany(sblock.fs_bsize, sizeof(ufs2_daddr_t));
}
}
if (rb > 0) {
/*
* Dump triple indirect blocks.
*/
if (bread(&disk, fsbtodb(&sblock, ino->di_ib[2]), (void *)&i3blk,
(size_t)sblock.fs_bsize) == -1) {
err(1, "bread: %s", disk.d_error);
}
snprintf(comment, sizeof(comment), "Inode 0x%08x: indirect 2", inode);
#define SQUARE(a) ((a)*(a))
DBG_DUMP_IBLK(&sblock,
comment,
i3blk,
howmany(rb,
SQUARE(howmany(sblock.fs_bsize, sizeof(ufs2_daddr_t)))));
#undef SQUARE
for (ind3ctr = 0; ((ind3ctr < howmany(sblock.fs_bsize,
sizeof(ufs2_daddr_t))) && (rb > 0)); ind3ctr++) {
ind3ptr = &((ufs2_daddr_t *)(void *)&i3blk)[ind3ctr];
if (bread(&disk, fsbtodb(&sblock, *ind3ptr), (void *)&i2blk,
(size_t)sblock.fs_bsize) == -1) {
err(1, "bread: %s", disk.d_error);
}
snprintf(comment, sizeof(comment),
"Inode 0x%08x: indirect 2->%d", inode, ind3ctr);
DBG_DUMP_IBLK(&sblock,
comment,
i2blk,
howmany(rb,
howmany(sblock.fs_bsize, sizeof(ufs2_daddr_t))));
for (ind2ctr = 0; ((ind2ctr < howmany(sblock.fs_bsize,
sizeof(ufs2_daddr_t))) && (rb > 0)); ind2ctr++) {
ind2ptr = &((ufs2_daddr_t *)(void *)&i2blk) [ind2ctr];
if (bread(&disk, fsbtodb(&sblock, *ind2ptr), (void *)&i1blk,
(size_t)sblock.fs_bsize) == -1) {
err(1, "bread: %s", disk.d_error);
}
snprintf(comment, sizeof(comment),
"Inode 0x%08x: indirect 2->%d->%d", inode,
ind3ctr, ind3ctr);
DBG_DUMP_IBLK(&sblock, comment, i1blk, (size_t)rb);
rb -= howmany(sblock.fs_bsize, sizeof(ufs2_daddr_t));
}
}
}
DBG_LEAVE;
return;
}
/* ************************************************************* usage ***** */
/*
* Dump a line of usage.
*/
void
usage(void)
{
DBG_FUNC("usage")
DBG_ENTER;
fprintf(stderr,
"usage: ffsinfo [-g cylinder_group] [-i inode] [-l level] "
"[-o outfile]\n"
" special | file\n");
DBG_LEAVE;
exit(1);
}
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