NetBSD-5.0.2/sbin/fsck_ffs/main.c
/* $NetBSD: main.c,v 1.73 2008/10/12 20:49:43 wiz Exp $ */
/*
* Copyright (c) 1980, 1986, 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) 1980, 1986, 1993\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/14/95";
#else
__RCSID("$NetBSD: main.c,v 1.73 2008/10/12 20:49:43 wiz Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/time.h>
#include <sys/mount.h>
#include <sys/resource.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/ffs/fs.h>
#include <ufs/ffs/ffs_extern.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fstab.h>
#include <string.h>
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include "fsck.h"
#include "extern.h"
#include "fsutil.h"
#include "exitvalues.h"
#include "snapshot.h"
int progress = 0;
int returntosingle = 0;
static int argtoi(int, const char *, const char *, int);
static int checkfilesys(const char *, const char *, int);
static void usage(void);
static char *get_snap_device(char *);
int
main(int argc, char *argv[])
{
struct rlimit r;
int ch;
int ret = FSCK_EXIT_OK;
char *snap_backup = NULL;
int snap_internal = 0;
if (getrlimit(RLIMIT_DATA, &r) == 0) {
r.rlim_cur = r.rlim_max;
(void) setrlimit(RLIMIT_DATA, &r);
}
sync();
skipclean = 1;
markclean = 1;
forceimage = 0;
endian = 0;
isappleufs = 0;
while ((ch = getopt(argc, argv, "aB:b:c:dFfm:npPqUyx:X")) != -1) {
switch (ch) {
case 'a':
isappleufs = 1;
break;
case 'B':
if (strcmp(optarg, "be") == 0)
endian = BIG_ENDIAN;
else if (strcmp(optarg, "le") == 0)
endian = LITTLE_ENDIAN;
else usage();
break;
case 'b':
skipclean = 0;
bflag = argtoi('b', "number", optarg, 10);
printf("Alternate super block location: %d\n", bflag);
break;
case 'c':
skipclean = 0;
cvtlevel = argtoi('c', "conversion level", optarg, 10);
if (cvtlevel > 4) {
cvtlevel = 4;
warnx("Using maximum conversion level of %d\n",
cvtlevel);
}
break;
case 'd':
debug++;
break;
case 'F':
forceimage = 1;
break;
case 'f':
skipclean = 0;
break;
case 'm':
lfmode = argtoi('m', "mode", optarg, 8);
if (lfmode &~ 07777)
errx(FSCK_EXIT_USAGE, "bad mode to -m: %o",
lfmode);
printf("** lost+found creation mode %o\n", lfmode);
break;
case 'n':
nflag++;
yflag = 0;
break;
case 'p':
preen++;
break;
case 'P':
progress = 1;
break;
case 'q':
quiet++;
break;
#ifndef SMALL
case 'U':
Uflag++;
break;
#endif
case 'y':
yflag++;
nflag = 0;
break;
case 'x':
snap_backup = optarg;
break;
case 'X':
snap_internal = 1;
break;
default:
usage();
}
}
if (snap_backup || snap_internal) {
if (!nflag || yflag) {
warnx("Cannot use -x or -X without -n\n");
snap_backup = NULL;
snap_internal = 0;
}
}
argc -= optind;
argv += optind;
if (!argc)
usage();
if (debug)
progress = 0;
if (signal(SIGINT, SIG_IGN) != SIG_IGN)
(void)signal(SIGINT, catch);
if (preen)
(void)signal(SIGQUIT, catchquit);
#ifdef PROGRESS
if (progress) {
progress_ttywidth(0);
(void)signal(SIGWINCH, progress_ttywidth);
}
#endif /* ! PROGRESS */
signal(SIGINFO, infohandler);
while (argc-- > 0) {
int nret;
char *path = strdup(blockcheck(*argv));
if (path == NULL)
pfatal("Can't check %s\n", *argv);
if (snap_backup || snap_internal) {
char *mpt;
char *snap_dev;
int snapfd;
mpt = get_snap_device(*argv);
if (mpt == NULL)
goto next;
snapfd = snap_open(mpt, snap_backup, NULL, &snap_dev);
if (snapfd < 0) {
warn("can't take snapshot of %s", mpt);
free(mpt);
goto next;
}
nret = checkfilesys(blockcheck(snap_dev), path, 0);
if (ret < nret)
ret = nret;
free(mpt);
close(snapfd);
} else {
nret = checkfilesys(path, path, 0);
if (ret < nret)
ret = nret;
}
next:
free(path);
argv++;
}
return returntosingle ? FSCK_EXIT_UNRESOLVED : ret;
}
static int
argtoi(int flag, const char *req, const char *str, int base)
{
char *cp;
int ret;
ret = (int)strtol(str, &cp, base);
if (cp == str || *cp)
errx(FSCK_EXIT_USAGE, "-%c flag requires a %s",
flag, req);
return (ret);
}
/*
* Check the specified filesystem.
*/
/* ARGSUSED */
static int
checkfilesys(const char *filesys, const char *origfs, int child)
{
daddr_t n_ffree, n_bfree;
struct dups *dp;
struct zlncnt *zlnp;
int cylno;
#ifdef LITE2BORKEN
int flags;
#endif
#ifdef PROGRESS
/*
* In prune mode, how far does the progress bar travel during
* each pass? (In non-prune mode, each pass has a separate
* progress bar that travels from 0 to 100%.)
*
* The numbers below are percentages, intended to correspond
* roughly to the cumulative time up to the end of each pass.
* They don't have to be accurate. In reality, on a large
* file system, Pass 1 and Pass 2 together are likely to use
* significantly more than the 95% reflected below, so users
* will get a pleasant surprise when the last 5% of the progress
* bar runs more quickly than they had expected.
*/
static int progress_limits[] = {0, 20, 95, 96, 97, 100};
#endif /* PROGRESS */
if (preen && child)
(void)signal(SIGQUIT, voidquit);
setcdevname(filesys, preen);
if (debug && preen)
pwarn("starting\n");
switch (setup(filesys, origfs)) {
case 0:
if (preen)
pfatal("CAN'T CHECK FILE SYSTEM.");
/* fall through */
case -1:
return FSCK_EXIT_OK;
}
/*
* Cleared if any questions answered no. Used to decide if
* the superblock should be marked clean.
*/
resolved = 1;
#ifdef PROGRESS
progress_switch(progress);
progress_init();
#endif /* PROGRESS */
/*
* 1: scan inodes tallying blocks used
*/
if (preen == 0) {
pwarn("** Last Mounted on %s\n", sblock->fs_fsmnt);
if (hotroot())
pwarn("** Root file system\n");
pwarn("** Phase 1 - Check Blocks and Sizes\n");
}
#ifdef PROGRESS
if (preen)
progress_setrange(0, progress_limits[1]);
#endif /* PROGRESS */
pass1();
/*
* 1b: locate first references to duplicates, if any
*/
if (duplist) {
if (preen)
pfatal("INTERNAL ERROR: dups with -p\n");
if (usedsoftdep)
pfatal("INTERNAL ERROR: dups with softdep\n");
pwarn("** Phase 1b - Rescan For More DUPS\n");
pass1b();
}
/*
* 2: traverse directories from root to mark all connected directories
*/
if (preen == 0)
pwarn("** Phase 2 - Check Pathnames\n");
#ifdef PROGRESS
if (preen)
progress_sethighlim(progress_limits[2]);
#endif /* PROGRESS */
pass2();
/*
* 3: scan inodes looking for disconnected directories
*/
if (preen == 0)
pwarn("** Phase 3 - Check Connectivity\n");
#ifdef PROGRESS
if (preen)
progress_sethighlim(progress_limits[3]);
#endif /* PROGRESS */
pass3();
/*
* 4: scan inodes looking for disconnected files; check reference counts
*/
if (preen == 0)
pwarn("** Phase 4 - Check Reference Counts\n");
#ifdef PROGRESS
if (preen)
progress_sethighlim(progress_limits[4]);
#endif /* PROGRESS */
pass4();
/*
* 5: check and repair resource counts in cylinder groups
*/
if (preen == 0)
pwarn("** Phase 5 - Check Cyl groups\n");
#ifdef PROGRESS
if (preen)
progress_sethighlim(progress_limits[5]);
#endif /* PROGRESS */
pass5();
/*
* print out summary statistics
*/
n_ffree = sblock->fs_cstotal.cs_nffree;
n_bfree = sblock->fs_cstotal.cs_nbfree;
pwarn("%llu files, %lld used, %lld free ",
(unsigned long long)n_files, (long long)n_blks,
(long long)(n_ffree + sblock->fs_frag * n_bfree));
printf("(%lld frags, %lld blocks, %lld.%lld%% fragmentation)\n",
(long long)n_ffree, (long long)n_bfree,
(long long)(n_ffree * 100 / (daddr_t)sblock->fs_dsize),
(long long)(((n_ffree * 1000 + (daddr_t)sblock->fs_dsize / 2)
/ (daddr_t)sblock->fs_dsize) % 10));
if (debug &&
(n_files -= maxino - ROOTINO - sblock->fs_cstotal.cs_nifree))
printf("%llu files missing\n", (unsigned long long)n_files);
if (debug) {
n_blks += sblock->fs_ncg *
(cgdmin(sblock, 0) - cgsblock(sblock, 0));
n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0);
n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize);
if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree))
printf("%lld blocks missing\n", (long long)n_blks);
if (duplist != NULL) {
printf("The following duplicate blocks remain:");
for (dp = duplist; dp; dp = dp->next)
printf(" %lld,", (long long)dp->dup);
printf("\n");
}
if (zlnhead != NULL) {
printf("The following zero link count inodes remain:");
for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
printf(" %llu,",
(unsigned long long)zlnp->zlncnt);
printf("\n");
}
}
zlnhead = (struct zlncnt *)0;
duplist = (struct dups *)0;
muldup = (struct dups *)0;
inocleanup();
if (fsmodified) {
sblock->fs_time = time(NULL);
sbdirty();
}
if (rerun)
markclean = 0;
#if LITE2BORKEN
if (!hotroot()) {
ckfini();
} else {
struct statvfs stfs_buf;
/*
* Check to see if root is mounted read-write.
*/
if (statvfs("/", &stfs_buf) == 0)
flags = stfs_buf.f_flag;
else
flags = 0;
if (markclean)
markclean = flags & MNT_RDONLY;
ckfini();
}
#else
ckfini();
#endif
for (cylno = 0; cylno < sblock->fs_ncg; cylno++)
if (inostathead[cylno].il_stat != NULL)
free(inostathead[cylno].il_stat);
free(inostathead);
inostathead = NULL;
if (!resolved || rerun) {
pwarn("\n***** UNRESOLVED INCONSISTENCIES REMAIN *****\n");
returntosingle = 1;
}
if (!fsmodified)
return FSCK_EXIT_OK;
if (!preen)
pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n");
if (rerun)
pwarn("\n***** PLEASE RERUN FSCK *****\n");
if (hotroot()) {
struct statvfs stfs_buf;
/*
* We modified the root. Do a mount update on
* it, unless it is read-write, so we can continue.
*/
if (statvfs("/", &stfs_buf) == 0) {
long flags = stfs_buf.f_flag;
struct ufs_args args;
if (flags & MNT_RDONLY) {
args.fspec = 0;
flags |= MNT_UPDATE | MNT_RELOAD;
if (mount(MOUNT_FFS, "/", flags,
&args, sizeof args) == 0)
return FSCK_EXIT_OK;
}
}
if (!preen)
pwarn("\n***** REBOOT NOW *****\n");
sync();
return FSCK_EXIT_ROOT_CHANGED;
}
return FSCK_EXIT_OK;
}
static void
usage(void)
{
(void) fprintf(stderr,
"usage: %s [-adFfPpqUX] [-B byteorder] [-b block] [-c level] "
"[-m mode]\n"
"\t[-x snap-backup] [-y | -n] filesystem ...\n",
getprogname());
exit(FSCK_EXIT_USAGE);
}
static
char *get_snap_device(char *file)
{
char *mountpoint = NULL;
struct statvfs *mntbuf, *fs, fsbuf;
struct stat sb;
/* find the mount point */
if (lstat(file, &sb) == -1) {
warn("can't stat %s", file);
return NULL;
}
if (S_ISCHR(sb.st_mode) || S_ISBLK(sb.st_mode)) {
int mntbufc, i;
if ((mntbufc = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0)
pfatal("can't get mount list: %s\n", strerror(errno));
for (fs = mntbuf, i = 0;
i < mntbufc; i++, fs++) {
if (strcmp(fs->f_fstypename, "ufs") != 0 &&
strcmp(fs->f_fstypename, "ffs") != 0)
continue;
if (fs->f_flag & ST_RDONLY) {
warnx("Cannot use -x or -X "
"on read-only filesystem");
free(mntbuf);
return NULL;
}
if (strcmp(fs->f_mntfromname, unrawname(file)) == 0) {
mountpoint = strdup(fs->f_mntonname);
free(mntbuf);
return mountpoint;
}
}
warnx("Cannot use -x or -X on unmounted device");
free(mntbuf);
return NULL;
}
if (S_ISDIR(sb.st_mode)) {
if (statvfs(file, &fsbuf) == -1)
pfatal("can't statvfs %s: %s\n", file, strerror(errno));
if (strcmp(fsbuf.f_mntonname, file))
pfatal("%s is not a mount point\n", file);
if (fsbuf.f_flag & ST_RDONLY) {
warnx("Cannot use -x or -X "
"on read-only filesystem");
return NULL;
}
mountpoint = strdup(file);
return mountpoint;
}
pfatal("%s is not a mount point\n", file);
return NULL;
}