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NetBSD/usr.sbin/dumplfs/dumplfs.c

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/* $NetBSD: dumplfs.c,v 1.66 2024/02/09 22:08:38 andvar Exp $ */
/*-
* Copyright (c) 1991, 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) 1991, 1993\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)dumplfs.c 8.5 (Berkeley) 5/24/95";
#else
__RCSID("$NetBSD: dumplfs.c,v 1.66 2024/02/09 22:08:38 andvar Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/ucred.h>
#include <sys/mount.h>
#include <sys/time.h>
#include <ufs/lfs/lfs.h>
#include <ufs/lfs/lfs_accessors.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <fstab.h>
#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <util.h>
#include "extern.h"
static void addseg(char *);
static void dump_cleaner_info(struct lfs *, void *);
static void dump_dinode(struct lfs *, union lfs_dinode *);
static void dump_ifile(int, struct lfs *, int, int, daddr_t);
static int dump_ipage_ifile(struct lfs *, int, char *, int);
static int dump_ipage_segusage(struct lfs *, int, char *, int);
static void dump_segment(int, int, daddr_t, struct lfs *, int);
static int dump_sum(int, struct lfs *, SEGSUM *, int, daddr_t);
static void dump_super(struct lfs *);
static void usage(void);
extern uint32_t cksum(void *, size_t);
typedef struct seglist SEGLIST;
struct seglist {
SEGLIST *next;
int num;
};
SEGLIST *seglist;
char *special;
/* Segment Usage formats */
#define print_suheader \
(void)printf("segnum\tflags\tnbytes\tninos\tnsums\tlastmod\n")
static inline void
print_suentry(int i, SEGUSE *sp, struct lfs *fs)
{
time_t t;
char flags[4] = " ";
if (sp->su_flags & SEGUSE_ACTIVE)
flags[0] = 'A';
if (sp->su_flags & SEGUSE_DIRTY)
flags[1] = 'D';
else
flags[1] = 'C';
if (sp->su_flags & SEGUSE_SUPERBLOCK)
flags[2] = 'S';
t = (lfs_sb_getversion(fs) == 1 ? sp->su_olastmod : sp->su_lastmod);
printf("%d\t%s\t%d\t%d\t%d\t%s", i, flags,
sp->su_nbytes, sp->su_ninos, sp->su_nsums,
ctime(&t));
}
/* Ifile formats */
#define print_iheader \
(void)printf("inum\tstatus\tversion\tdaddr\t\tfreeptr\n")
static inline void
print_ientry(int i, struct lfs *lfsp, IFILE *ip)
{
uint32_t version;
daddr_t daddr;
ino_t nextfree;
version = lfs_if_getversion(lfsp, ip);
daddr = lfs_if_getdaddr(lfsp, ip);
nextfree = lfs_if_getnextfree(lfsp, ip);
if (daddr == LFS_UNUSED_DADDR)
printf("%d\tFREE\t%u\t \t\t%ju\n", i, version,
(uintmax_t)nextfree);
else
printf("%d\tINUSE\t%u\t%8jX\t%s\n",
i, version, (intmax_t)daddr,
nextfree == LFS_ORPHAN_NEXTFREE(lfsp) ? "orphan" : "-");
}
/*
* Set the is64 and dobyteswap fields of struct lfs. Note that the
* magic number (and version) fields are necessarily at the same place
* in all superblock versions, so we can read it via u_32 without
* getting confused.
*/
static void
identify(struct lfs *fs)
{
unsigned magic;
magic = fs->lfs_dlfs_u.u_32.dlfs_magic;
switch (magic) {
case LFS_MAGIC:
fs->lfs_is64 = false;
fs->lfs_dobyteswap = false;
break;
case LFS_MAGIC_SWAPPED:
fs->lfs_is64 = false;
fs->lfs_dobyteswap = true;
break;
case LFS64_MAGIC:
fs->lfs_is64 = true;
fs->lfs_dobyteswap = false;
break;
case LFS64_MAGIC_SWAPPED:
fs->lfs_is64 = true;
fs->lfs_dobyteswap = true;
break;
default:
warnx("Superblock magic number 0x%x not known; "
"assuming 32-bit, native-endian", magic);
fs->lfs_is64 = false;
fs->lfs_dobyteswap = false;
break;
}
}
#define fsbtobyte(fs, b) lfs_fsbtob((fs), (off_t)((b)))
int datasum_check = 0;
int
main(int argc, char **argv)
{
struct lfs lfs_sb1, lfs_sb2, *lfs_master;
daddr_t seg_addr, idaddr, sbdaddr;
int ch, do_allsb, do_ientries, do_segentries, fd, segnum;
void *sbuf;
do_allsb = 0;
do_ientries = 0;
do_segentries = 0;
idaddr = 0x0;
sbdaddr = 0x0;
while ((ch = getopt(argc, argv, "ab:diI:Ss:")) != -1)
switch(ch) {
case 'a': /* Dump all superblocks */
do_allsb = 1;
break;
case 'b': /* Use this superblock */
sbdaddr = strtol(optarg, NULL, 0);
break;
case 'd':
datasum_check = 1;
break;
case 'i': /* Dump ifile entries */
do_ientries = !do_ientries;
break;
case 'I': /* Use this ifile inode */
idaddr = strtol(optarg, NULL, 0);
break;
case 'S':
do_segentries = !do_segentries;
break;
case 's': /* Dump out these segments */
addseg(optarg);
break;
default:
usage();
}
argc -= optind;
argv += optind;
if (argc != 1)
usage();
special = argv[0];
if ((fd = open(special, O_RDONLY, 0)) < 0)
err(1, "%s", special);
sbuf = emalloc(LFS_SBPAD);
if (sbdaddr == 0x0) {
/* Read the proto-superblock */
__CTASSERT(sizeof(struct dlfs) == sizeof(struct dlfs64));
get(fd, LFS_LABELPAD, sbuf, LFS_SBPAD);
memcpy(&lfs_sb1.lfs_dlfs_u, sbuf, sizeof(struct dlfs));
identify(&lfs_sb1);
/* If that wasn't the real first sb, get the real first sb */
if (lfs_sb_getversion(&lfs_sb1) > 1 &&
lfs_sb_getsboff(&lfs_sb1, 0) > lfs_btofsb(&lfs_sb1, LFS_LABELPAD)) {
get(fd, lfs_fsbtob(&lfs_sb1, lfs_sb_getsboff(&lfs_sb1, 0)),
&lfs_sb1.lfs_dlfs_u, sizeof(struct dlfs));
identify(&lfs_sb1);
}
/*
* Read the second superblock and figure out which check point is
* most up to date.
*/
get(fd,
fsbtobyte(&lfs_sb1, lfs_sb_getsboff(&lfs_sb1, 1)),
sbuf, LFS_SBPAD);
memcpy(&lfs_sb2.lfs_dlfs_u, sbuf, sizeof(struct dlfs));
identify(&lfs_sb2);
lfs_master = &lfs_sb1;
if (lfs_sb_getversion(&lfs_sb1) > 1) {
if (lfs_sb_getserial(&lfs_sb1) > lfs_sb_getserial(&lfs_sb2)) {
lfs_master = &lfs_sb2;
sbdaddr = lfs_sb_getsboff(&lfs_sb1, 1);
} else
sbdaddr = lfs_sb_getsboff(&lfs_sb1, 0);
} else {
if (lfs_sb_getotstamp(&lfs_sb1) > lfs_sb_getotstamp(&lfs_sb2)) {
lfs_master = &lfs_sb2;
sbdaddr = lfs_sb_getsboff(&lfs_sb1, 1);
} else
sbdaddr = lfs_sb_getsboff(&lfs_sb1, 0);
}
} else {
/* Read the first superblock */
get(fd, dbtob((off_t)sbdaddr), sbuf, LFS_SBPAD);
memcpy(&lfs_sb1.lfs_dlfs_u, sbuf, sizeof(struct dlfs));
identify(&lfs_sb1);
lfs_master = &lfs_sb1;
}
free(sbuf);
/* Compatibility */
if (lfs_sb_getversion(lfs_master) == 1) {
lfs_sb_setsumsize(lfs_master, LFS_V1_SUMMARY_SIZE);
lfs_sb_setibsize(lfs_master, lfs_sb_getbsize(lfs_master));
lfs_sb_sets0addr(lfs_master, lfs_sb_getsboff(lfs_master, 0));
lfs_sb_settstamp(lfs_master, lfs_sb_getotstamp(lfs_master));
lfs_sb_setfsbtodb(lfs_master, 0);
}
(void)printf("Master LFS%d superblock at 0x%llx:\n",
lfs_master->lfs_is64 ? 64 : 32, (long long)sbdaddr);
dump_super(lfs_master);
dump_ifile(fd, lfs_master, do_ientries, do_segentries, idaddr);
if (seglist != NULL)
for (; seglist != NULL; seglist = seglist->next) {
seg_addr = lfs_sntod(lfs_master, seglist->num);
dump_segment(fd, seglist->num, seg_addr, lfs_master,
do_allsb);
}
else
for (segnum = 0, seg_addr = lfs_sntod(lfs_master, 0);
segnum < lfs_sb_getnseg(lfs_master);
segnum++, seg_addr = lfs_sntod(lfs_master, segnum))
dump_segment(fd, segnum, seg_addr, lfs_master,
do_allsb);
(void)close(fd);
exit(0);
}
/*
* We are reading all the blocks of an inode and dumping out the ifile table.
* This code could be tighter, but this is a first pass at getting the stuff
* printed out rather than making this code incredibly efficient.
*/
static void
dump_ifile(int fd, struct lfs *lfsp, int do_ientries, int do_segentries, daddr_t addr)
{
char *ipage;
char *dpage;
union lfs_dinode *dip = NULL;
void *dindir, *indir;
unsigned offset;
daddr_t thisblock;
daddr_t pdb;
int block_limit, i, inum, j, nblocks, psize;
psize = lfs_sb_getbsize(lfsp);
if (!addr)
addr = lfs_sb_getidaddr(lfsp);
dpage = emalloc(psize);
get(fd, fsbtobyte(lfsp, addr), dpage, psize);
dip = NULL;
for (i = LFS_INOPB(lfsp); i-- > 0; ) {
dip = DINO_IN_BLOCK(lfsp, dpage, i);
if (lfs_dino_getinumber(lfsp, dip) == LFS_IFILE_INUM)
break;
}
/* just in case */
if (dip == NULL) {
warnx("this volume apparently has zero inodes per block");
return;
}
if (lfs_dino_getinumber(lfsp, dip) != LFS_IFILE_INUM) {
warnx("unable to locate ifile inode at disk address 0x%jx",
(uintmax_t)addr);
return;
}
(void)printf("\nIFILE inode\n");
dump_dinode(lfsp, dip);
(void)printf("\nIFILE contents\n");
nblocks = lfs_dino_getsize(lfsp, dip) >> lfs_sb_getbshift(lfsp);
block_limit = MIN(nblocks, ULFS_NDADDR);
/* Get the direct block */
ipage = emalloc(psize);
for (inum = 0, i = 0; i < block_limit; i++) {
pdb = lfs_dino_getdb(lfsp, dip, i);
get(fd, fsbtobyte(lfsp, pdb), ipage, psize);
if (i < lfs_sb_getcleansz(lfsp)) {
dump_cleaner_info(lfsp, ipage);
if (do_segentries)
print_suheader;
continue;
}
if (i < (lfs_sb_getsegtabsz(lfsp) + lfs_sb_getcleansz(lfsp))) {
if (do_segentries)
inum = dump_ipage_segusage(lfsp, inum, ipage,
lfs_sb_getsepb(lfsp));
else
inum = (i < lfs_sb_getsegtabsz(lfsp) + lfs_sb_getcleansz(lfsp) - 1);
if (!inum) {
if(!do_ientries)
goto e0;
else
print_iheader;
}
} else
inum = dump_ipage_ifile(lfsp, inum, ipage, lfs_sb_getifpb(lfsp));
}
if (nblocks <= ULFS_NDADDR)
goto e0;
/* Dump out blocks off of single indirect block */
indir = emalloc(psize);
get(fd, fsbtobyte(lfsp, lfs_dino_getib(lfsp, dip, 0)), indir, psize);
block_limit = MIN(i + lfs_sb_getnindir(lfsp), nblocks);
for (offset = 0; i < block_limit; i++, offset++) {
thisblock = lfs_iblock_get(lfsp, indir, offset);
if (thisblock == LFS_UNUSED_DADDR)
break;
get(fd, fsbtobyte(lfsp, thisblock), ipage, psize);
if (i < lfs_sb_getcleansz(lfsp)) {
dump_cleaner_info(lfsp, ipage);
continue;
}
if (i < lfs_sb_getsegtabsz(lfsp) + lfs_sb_getcleansz(lfsp)) {
if (do_segentries)
inum = dump_ipage_segusage(lfsp, inum, ipage,
lfs_sb_getsepb(lfsp));
else
inum = (i < lfs_sb_getsegtabsz(lfsp) + lfs_sb_getcleansz(lfsp) - 1);
if (!inum) {
if(!do_ientries)
goto e1;
else
print_iheader;
}
} else
inum = dump_ipage_ifile(lfsp, inum, ipage, lfs_sb_getifpb(lfsp));
}
if (nblocks <= ULFS_NDADDR + lfs_sb_getnindir(lfsp))
goto e1;
/* Get the double indirect block */
dindir = emalloc(psize);
get(fd, fsbtobyte(lfsp, lfs_dino_getib(lfsp, dip, 1)), dindir, psize);
for (j = 0; j < lfs_sb_getnindir(lfsp); j++) {
thisblock = lfs_iblock_get(lfsp, dindir, j);
if (thisblock == LFS_UNUSED_DADDR)
break;
get(fd, fsbtobyte(lfsp, thisblock), indir, psize);
block_limit = MIN(i + lfs_sb_getnindir(lfsp), nblocks);
for (offset = 0; i < block_limit; i++, offset++) {
thisblock = lfs_iblock_get(lfsp, indir, offset);
if (thisblock == LFS_UNUSED_DADDR)
break;
get(fd, fsbtobyte(lfsp, thisblock), ipage, psize);
if (i < lfs_sb_getcleansz(lfsp)) {
dump_cleaner_info(lfsp, ipage);
continue;
}
if (i < lfs_sb_getsegtabsz(lfsp) + lfs_sb_getcleansz(lfsp)) {
if (do_segentries)
inum = dump_ipage_segusage(lfsp,
inum, ipage, lfs_sb_getsepb(lfsp));
else
inum = (i < lfs_sb_getsegtabsz(lfsp) +
lfs_sb_getcleansz(lfsp) - 1);
if (!inum) {
if(!do_ientries)
goto e2;
else
print_iheader;
}
} else
inum = dump_ipage_ifile(lfsp, inum,
ipage, lfs_sb_getifpb(lfsp));
}
}
e2: free(dindir);
e1: free(indir);
e0: free(dpage);
free(ipage);
}
static int
dump_ipage_ifile(struct lfs *lfsp, int i, char *pp, int tot)
{
char *ip;
int cnt, max, entsize;
if (lfsp->lfs_is64)
entsize = sizeof(IFILE64);
if (lfs_sb_getversion(lfsp) > 1)
entsize = sizeof(IFILE32);
else
entsize = sizeof(IFILE_V1);
max = i + tot;
for (ip = pp, cnt = i; cnt < max; cnt++, ip += entsize)
print_ientry(cnt, lfsp, (IFILE *)ip);
return (max);
}
static int
dump_ipage_segusage(struct lfs *lfsp, int i, char *pp, int tot)
{
SEGUSE *sp;
int cnt, max;
struct seglist *slp;
max = i + tot;
for (sp = (SEGUSE *)pp, cnt = i;
cnt < lfs_sb_getnseg(lfsp) && cnt < max; cnt++) {
if (seglist == NULL)
print_suentry(cnt, sp, lfsp);
else {
for (slp = seglist; slp != NULL; slp = slp->next)
if (cnt == slp->num) {
print_suentry(cnt, sp, lfsp);
break;
}
}
if (lfs_sb_getversion(lfsp) > 1)
++sp;
else
sp = (SEGUSE *)((SEGUSE_V1 *)sp + 1);
}
if (max >= lfs_sb_getnseg(lfsp))
return (0);
else
return (max);
}
static void
dump_dinode(struct lfs *fs, union lfs_dinode *dip)
{
int i;
time_t at, mt, ct;
at = lfs_dino_getatime(fs, dip);
mt = lfs_dino_getmtime(fs, dip);
ct = lfs_dino_getctime(fs, dip);
(void)printf(" %so%o\t%s%d\t%s%d\t%s%d\t%s%ju\n",
"mode ", lfs_dino_getmode(fs, dip),
"nlink ", lfs_dino_getnlink(fs, dip),
"uid ", lfs_dino_getuid(fs, dip),
"gid ", lfs_dino_getgid(fs, dip),
"size ", (uintmax_t)lfs_dino_getsize(fs, dip));
(void)printf(" %s%s", "atime ", ctime(&at));
(void)printf(" %s%s", "mtime ", ctime(&mt));
(void)printf(" %s%s", "ctime ", ctime(&ct));
(void)printf(" inum %ju\n",
(uintmax_t)lfs_dino_getinumber(fs, dip));
(void)printf(" Direct Addresses\n");
for (i = 0; i < ULFS_NDADDR; i++) {
(void)printf("\t0x%jx", (intmax_t)lfs_dino_getdb(fs, dip, i));
if ((i % 6) == 5)
(void)printf("\n");
}
(void)printf(" Indirect Addresses\n");
for (i = 0; i < ULFS_NIADDR; i++)
(void)printf("\t0x%jx", (intmax_t)lfs_dino_getib(fs, dip, i));
(void)printf("\n");
}
static int
dump_sum(int fd, struct lfs *lfsp, SEGSUM *sp, int segnum, daddr_t addr)
{
FINFO *fp;
IINFO *iip, *iip2;
union lfs_blocks fipblocks;
int i, j, acc;
int ck;
int numbytes, numblocks;
char *datap;
char *diblock;
union lfs_dinode *dip;
size_t el_size;
u_int32_t datasum;
u_int32_t ssflags;
time_t t;
char *buf;
size_t sumstart;
sumstart = lfs_ss_getsumstart(lfsp);
if (lfs_ss_getmagic(lfsp, sp) != SS_MAGIC ||
lfs_ss_getsumsum(lfsp, sp) != (ck = cksum((char *)sp + sumstart,
lfs_sb_getsumsize(lfsp) - sumstart))) {
/* Don't print "corrupt" if we're just too close to the edge */
if (lfs_dtosn(lfsp, addr + LFS_FSBTODB(lfsp, 1)) ==
lfs_dtosn(lfsp, addr))
(void)printf("dumplfs: %s %d address 0x%llx\n",
"corrupt summary block; segment", segnum,
(long long)addr);
return -1;
}
if (lfs_sb_getversion(lfsp) > 1 && lfs_ss_getident(lfsp, sp) != lfs_sb_getident(lfsp)) {
(void)printf("dumplfs: %s %d address 0x%llx\n",
"summary from a former life; segment", segnum,
(long long)addr);
return -1;
}
(void)printf("Segment Summary Info at 0x%llx\n", (long long)addr);
ssflags = lfs_ss_getflags(lfsp, sp);
(void)printf(" %s0x%jx\t%s%d\t%s%d\t%s%c%c%c%c\n %s0x%x\t%s0x%x",
"next ", (intmax_t)lfs_ss_getnext(lfsp, sp),
"nfinfo ", lfs_ss_getnfinfo(lfsp, sp),
"ninos ", lfs_ss_getninos(lfsp, sp),
"flags ", (ssflags & SS_DIROP) ? 'D' : '-',
(ssflags & SS_CONT) ? 'C' : '-',
(ssflags & SS_CLEAN) ? 'L' : '-',
(ssflags & SS_RFW) ? 'R' : '-',
"sumsum ", lfs_ss_getsumsum(lfsp, sp),
"datasum ", lfs_ss_getdatasum(lfsp, sp));
if (lfs_sb_getversion(lfsp) == 1) {
t = lfs_ss_getocreate(lfsp, sp);
(void)printf("\tcreate %s\n", ctime(&t));
} else {
t = lfs_ss_getcreate(lfsp, sp);
(void)printf("\tcreate %s", ctime(&t));
(void)printf(" roll_id %-8x", lfs_ss_getident(lfsp, sp));
(void)printf(" serial %lld\n",
(long long)lfs_ss_getserial(lfsp, sp));
}
/* Dump out inode disk addresses */
iip = SEGSUM_IINFOSTART(lfsp, sp);
diblock = emalloc(lfs_sb_getbsize(lfsp));
printf(" Inode addresses:");
numbytes = 0;
numblocks = 0;
for (i = 0; i < lfs_ss_getninos(lfsp, sp); iip = NEXTLOWER_IINFO(lfsp, iip)) {
++numblocks;
numbytes += lfs_sb_getibsize(lfsp); /* add bytes for inode block */
printf("\t0x%jx {", (intmax_t)lfs_ii_getblock(lfsp, iip));
get(fd, fsbtobyte(lfsp, lfs_ii_getblock(lfsp, iip)), diblock, lfs_sb_getibsize(lfsp));
for (j = 0; i < lfs_ss_getninos(lfsp, sp) && j < LFS_INOPB(lfsp); j++, i++) {
if (j > 0)
(void)printf(", ");
dip = DINO_IN_BLOCK(lfsp, diblock, j);
(void)printf("%juv%d", lfs_dino_getinumber(lfsp, dip),
lfs_dino_getgen(lfsp, dip));
}
(void)printf("}");
if (((i/LFS_INOPB(lfsp)) % 4) == 3)
(void)printf("\n");
}
free(diblock);
printf("\n");
fp = SEGSUM_FINFOBASE(lfsp, sp);
for (i = 0; i < lfs_ss_getnfinfo(lfsp, sp); i++) {
(void)printf(" FINFO for inode: %ju version %u nblocks %u lastlength %u\n",
(uintmax_t)lfs_fi_getino(lfsp, fp),
lfs_fi_getversion(lfsp, fp),
lfs_fi_getnblocks(lfsp, fp),
lfs_fi_getlastlength(lfsp, fp));
lfs_blocks_fromfinfo(lfsp, &fipblocks, fp);
numblocks += lfs_fi_getnblocks(lfsp, fp);
for (j = 0; j < lfs_fi_getnblocks(lfsp, fp); j++) {
(void)printf("\t%jd",
(intmax_t)lfs_blocks_get(lfsp, &fipblocks, j));
if ((j % 8) == 7)
(void)printf("\n");
if (j == lfs_fi_getnblocks(lfsp, fp) - 1)
numbytes += lfs_fi_getlastlength(lfsp, fp);
else
numbytes += lfs_sb_getbsize(lfsp);
}
if ((j % 8) != 0)
(void)printf("\n");
fp = NEXT_FINFO(lfsp, fp);
}
if (datasum_check == 0)
return (numbytes);
/*
* Now that we know the number of blocks, run back through and
* compute the data checksum. (A bad data checksum is not enough
* to prevent us from continuing, but it does merit a warning.)
*/
iip2 = SEGSUM_IINFOSTART(lfsp, sp);
fp = SEGSUM_FINFOBASE(lfsp, sp);
if (lfs_sb_getversion(lfsp) == 1) {
el_size = sizeof(unsigned long);
} else {
el_size = sizeof(u_int32_t);
}
datap = ecalloc(numblocks, el_size);
acc = 0;
addr += lfs_btofsb(lfsp, lfs_sb_getsumsize(lfsp));
buf = emalloc(lfs_sb_getbsize(lfsp));
for (i = 0; i < lfs_ss_getnfinfo(lfsp, sp); i++) {
while (addr == lfs_ii_getblock(lfsp, iip2)) {
get(fd, fsbtobyte(lfsp, addr), buf, lfs_sb_getibsize(lfsp));
memcpy(datap + acc * el_size, buf, el_size);
addr += lfs_btofsb(lfsp, lfs_sb_getibsize(lfsp));
iip2 = NEXTLOWER_IINFO(lfsp, iip2);
++acc;
}
for (j = 0; j < lfs_fi_getnblocks(lfsp, fp); j++) {
get(fd, fsbtobyte(lfsp, addr), buf, lfs_sb_getfsize(lfsp));
memcpy(datap + acc * el_size, buf, el_size);
if (j == lfs_fi_getnblocks(lfsp, fp) - 1)
addr += lfs_btofsb(lfsp, lfs_fi_getlastlength(lfsp, fp));
else
addr += lfs_btofsb(lfsp, lfs_sb_getbsize(lfsp));
++acc;
}
fp = NEXT_FINFO(lfsp, fp);
}
while (addr == lfs_ii_getblock(lfsp, iip2)) {
get(fd, fsbtobyte(lfsp, addr), buf, lfs_sb_getibsize(lfsp));
memcpy(datap + acc * el_size, buf, el_size);
addr += lfs_btofsb(lfsp, lfs_sb_getibsize(lfsp));
iip2 = NEXTLOWER_IINFO(lfsp, iip2);
++acc;
}
free(buf);
if (acc != numblocks)
printf("** counted %d blocks but should have been %d\n",
acc, numblocks);
datasum = cksum(datap, numblocks * el_size);
if (datasum != lfs_ss_getdatasum(lfsp, sp))
printf("** computed datasum 0x%lx does not match given datasum 0x%lx\n", (unsigned long)datasum, (unsigned long)lfs_ss_getdatasum(lfsp, sp));
free(datap);
return (numbytes);
}
static void
dump_segment(int fd, int segnum, daddr_t addr, struct lfs *lfsp, int dump_sb)
{
struct lfs lfs_sb, *sbp;
SEGSUM *sump;
size_t sumstart;
char *sumblock;
int did_one, nbytes, sb;
off_t sum_offset;
daddr_t new_addr;
(void)printf("\nSEGMENT %lld (Disk Address 0x%llx)\n",
(long long)lfs_dtosn(lfsp, addr), (long long)addr);
sum_offset = fsbtobyte(lfsp, addr);
sumblock = emalloc(lfs_sb_getsumsize(lfsp));
if (lfs_sb_getversion(lfsp) > 1 && segnum == 0) {
if (lfs_fsbtob(lfsp, lfs_sb_gets0addr(lfsp)) < LFS_LABELPAD) {
/* First segment eats the disklabel */
sum_offset += lfs_fragroundup(lfsp, LFS_LABELPAD) -
lfs_fsbtob(lfsp, lfs_sb_gets0addr(lfsp));
addr += lfs_btofsb(lfsp, lfs_fragroundup(lfsp, LFS_LABELPAD)) -
lfs_sb_gets0addr(lfsp);
printf("Disklabel at 0x0\n");
}
}
sb = 0;
did_one = 0;
do {
get(fd, sum_offset, sumblock, lfs_sb_getsumsize(lfsp));
sump = (SEGSUM *)sumblock;
sumstart = lfs_ss_getsumstart(lfsp);
if ((lfs_sb_getversion(lfsp) > 1 &&
lfs_ss_getident(lfsp, sump) != lfs_sb_getident(lfsp)) ||
lfs_ss_getsumsum(lfsp, sump) !=
cksum((char *)sump + sumstart,
lfs_sb_getsumsize(lfsp) - sumstart)) {
sbp = (struct lfs *)sump;
if ((sb = (sbp->lfs_dlfs_u.u_32.dlfs_magic == LFS_MAGIC))) {
printf("Superblock at 0x%x\n",
(unsigned)lfs_btofsb(lfsp, sum_offset));
if (dump_sb) {
__CTASSERT(sizeof(struct dlfs) ==
sizeof(struct dlfs64));
get(fd, sum_offset, &(lfs_sb.lfs_dlfs_u),
sizeof(struct dlfs));
dump_super(&lfs_sb);
}
if (lfs_sb_getversion(lfsp) > 1)
sum_offset += lfs_fragroundup(lfsp, LFS_SBPAD);
else
sum_offset += LFS_SBPAD;
} else if (did_one)
break;
else {
printf("Segment at 0x%llx empty or corrupt\n",
(long long)addr);
break;
}
} else {
nbytes = dump_sum(fd, lfsp, sump, segnum,
lfs_btofsb(lfsp, sum_offset));
if (nbytes >= 0)
sum_offset += lfs_sb_getsumsize(lfsp) + nbytes;
else
sum_offset = 0;
did_one = 1;
}
/* If the segment ends right on a boundary, it still ends */
new_addr = lfs_btofsb(lfsp, sum_offset);
/* printf("end daddr = 0x%lx\n", (long)new_addr); */
if (lfs_dtosn(lfsp, new_addr) != lfs_dtosn(lfsp, addr))
break;
} while (sum_offset);
free(sumblock);
}
static void
dump_super(struct lfs *lfsp)
{
time_t stamp;
int i;
(void)printf(" %s0x%-8x %s0x%-8x %s%-10ju\n",
"magic ", lfsp->lfs_dlfs_u.u_32.dlfs_magic,
"version ", lfs_sb_getversion(lfsp),
"size ", (uintmax_t)lfs_sb_getsize(lfsp));
(void)printf(" %s%-10d %s%-10ju %s%-10d\n",
"ssize ", lfs_sb_getssize(lfsp),
"dsize ", (uintmax_t)lfs_sb_getdsize(lfsp),
"bsize ", lfs_sb_getbsize(lfsp));
(void)printf(" %s%-10d %s%-10d %s%-10d\n",
"fsize ", lfs_sb_getfsize(lfsp),
"frag ", lfs_sb_getfrag(lfsp),
"minfree ", lfs_sb_getminfree(lfsp));
(void)printf(" %s%-10d %s%-10d %s%-10d\n",
"inopb ", lfs_sb_getinopb(lfsp),
"ifpb ", lfs_sb_getifpb(lfsp),
"nindir ", lfs_sb_getnindir(lfsp));
(void)printf(" %s%-10d %s%-10d %s%-10d\n",
"nseg ", lfs_sb_getnseg(lfsp),
"sepb ", lfs_sb_getsepb(lfsp),
"cleansz ", lfs_sb_getcleansz(lfsp));
(void)printf(" %s%-10d %s0x%-8x %s%-10d\n",
"segtabsz ", lfs_sb_getsegtabsz(lfsp),
"segmask ", lfs_sb_getsegmask(lfsp),
"segshift ", lfs_sb_getsegshift(lfsp));
(void)printf(" %s0x%-8jx %s%-10d %s0x%-8jX\n",
"bmask ", (uintmax_t)lfs_sb_getbmask(lfsp),
"bshift ", lfs_sb_getbshift(lfsp),
"ffmask ", (uintmax_t)lfs_sb_getffmask(lfsp));
(void)printf(" %s%-10d %s0x%-8jx %s%u\n",
"ffshift ", lfs_sb_getffshift(lfsp),
"fbmask ", (uintmax_t)lfs_sb_getfbmask(lfsp),
"fbshift ", lfs_sb_getfbshift(lfsp));
(void)printf(" %s%-10d %s%-10d %s0x%-8x\n",
"sushift ", lfs_sb_getsushift(lfsp),
"fsbtodb ", lfs_sb_getfsbtodb(lfsp),
"cksum ", lfs_sb_getcksum(lfsp));
(void)printf(" %s%-10d %s%-10d %s%-10d\n",
"nclean ", lfs_sb_getnclean(lfsp),
"dmeta ", lfs_sb_getdmeta(lfsp),
"minfreeseg ", lfs_sb_getminfreeseg(lfsp));
(void)printf(" %s0x%-8x %s%-9d %s%-10d\n",
"roll_id ", lfs_sb_getident(lfsp),
"interleave ", lfs_sb_getinterleave(lfsp),
"sumsize ", lfs_sb_getsumsize(lfsp));
(void)printf(" %s%-10jd %s0x%-8jx\n",
"seg0addr ", (intmax_t)lfs_sb_gets0addr(lfsp),
"maxfilesize ", (uintmax_t)lfs_sb_getmaxfilesize(lfsp));
(void)printf(" Superblock disk addresses:\n ");
for (i = 0; i < LFS_MAXNUMSB; i++) {
(void)printf(" 0x%-8jx", (intmax_t)lfs_sb_getsboff(lfsp, i));
if (i == (LFS_MAXNUMSB >> 1))
(void)printf("\n ");
}
(void)printf("\n");
(void)printf(" Checkpoint Info\n");
(void)printf(" %s%-10ju %s0x%-8jx\n",
"freehd ", (uintmax_t)lfs_sb_getfreehd(lfsp),
"idaddr ", (intmax_t)lfs_sb_getidaddr(lfsp));
(void)printf(" %s%-10d %s%-10jd %s%-10jd\n",
"uinodes ", lfs_sb_getuinodes(lfsp),
"bfree ", (intmax_t)lfs_sb_getbfree(lfsp),
"avail ", (intmax_t)lfs_sb_getavail(lfsp));
(void)printf(" %s%-10ju %s0x%-8jx %s0x%-8jx\n",
"nfiles ", (uintmax_t)lfs_sb_getnfiles(lfsp),
"lastseg ", (uintmax_t)lfs_sb_getlastseg(lfsp),
"nextseg ", (uintmax_t)lfs_sb_getnextseg(lfsp));
(void)printf(" %s0x%-8jx %s0x%-8jx %s%-10ju\n",
"curseg ", (uintmax_t)lfs_sb_getcurseg(lfsp),
"offset ", (uintmax_t)lfs_sb_getoffset(lfsp),
"serial ", (uintmax_t)lfs_sb_getserial(lfsp));
stamp = lfs_sb_gettstamp(lfsp);
(void)printf(" tstamp %s", ctime(&stamp));
if (!lfsp->lfs_is64) {
(void)printf(" 32-bit only derived or constant fields\n");
(void)printf(" %s%-10u\n",
"ifile ", lfs_sb_getifile(lfsp));
}
}
static void
addseg(char *arg)
{
SEGLIST *p;
p = emalloc(sizeof(*p));
p->next = seglist;
p->num = atoi(arg);
seglist = p;
}
static void
dump_cleaner_info(struct lfs *lfsp, void *ipage)
{
CLEANERINFO *cip;
cip = (CLEANERINFO *)ipage;
if (lfs_sb_getversion(lfsp) > 1) {
(void)printf("free_head %ju\n",
(uintmax_t)lfs_ci_getfree_head(lfsp, cip));
(void)printf("free_tail %ju\n",
(uintmax_t)lfs_ci_getfree_tail(lfsp, cip));
}
(void)printf("clean\t%u\tdirty\t%u\n",
lfs_ci_getclean(lfsp, cip), lfs_ci_getdirty(lfsp, cip));
(void)printf("bfree\t%jd\tavail\t%jd\n\n",
(intmax_t)lfs_ci_getbfree(lfsp, cip),
(intmax_t)lfs_ci_getavail(lfsp, cip));
}
static void
usage(void)
{
(void)fprintf(stderr, "usage: dumplfs [-adiS] [-b blkno] [-I blkno] [-s segno] filesys|device\n");
exit(1);
}
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