freebsd-dev/sbin/fsck/main.c
1999-08-28 00:22:10 +00:00

376 lines
9.2 KiB
C

/*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 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.
*/
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1980, 1986, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/14/95";
#endif
static const char rcsid[] =
"$FreeBSD$";
#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 <err.h>
#include <fstab.h>
#include "fsck.h"
static int argtoi __P((int flag, char *req, char *str, int base));
static int docheck __P((struct fstab *fsp));
static int checkfilesys __P((char *filesys, char *mntpt, long auxdata,
int child));
int main __P((int argc, char *argv[]));
int
main(argc, argv)
int argc;
char *argv[];
{
int ch;
int ret, maxrun = 0;
struct rlimit rlimit;
sync();
while ((ch = getopt(argc, argv, "dfpnNyYb:c:l:m:")) != -1) {
switch (ch) {
case 'p':
preen++;
break;
case 'b':
bflag = argtoi('b', "number", optarg, 10);
printf("Alternate super block location: %d\n", bflag);
break;
case 'c':
cvtlevel = argtoi('c', "conversion level", optarg, 10);
break;
case 'd':
debug++;
break;
case 'f':
fflag++;
break;
case 'l':
maxrun = argtoi('l', "number", optarg, 10);
break;
case 'm':
lfmode = argtoi('m', "mode", optarg, 8);
if (lfmode &~ 07777)
errx(EEXIT, "bad mode to -m: %o", lfmode);
printf("** lost+found creation mode %o\n", lfmode);
break;
case 'n':
case 'N':
nflag++;
yflag = 0;
break;
case 'y':
case 'Y':
yflag++;
nflag = 0;
break;
default:
errx(EEXIT, "%c option?", ch);
}
}
argc -= optind;
argv += optind;
if (signal(SIGINT, SIG_IGN) != SIG_IGN)
(void)signal(SIGINT, catch);
if (preen)
(void)signal(SIGQUIT, catchquit);
/*
* Push up our allowed memory limit so we can cope
* with huge filesystems.
*/
if (getrlimit(RLIMIT_DATA, &rlimit) == 0) {
rlimit.rlim_cur = rlimit.rlim_max;
(void)setrlimit(RLIMIT_DATA, &rlimit);
}
if (argc) {
while (argc-- > 0) {
char *path = blockcheck(*argv);
if (path == NULL)
pfatal("Can't check %s\n", *argv);
else
(void)checkfilesys(path, 0, 0L, 0);
++argv;
}
exit(0);
}
ret = checkfstab(preen, maxrun, docheck, checkfilesys);
if (returntosingle)
exit(2);
exit(ret);
}
static int
argtoi(flag, req, str, base)
int flag;
char *req, *str;
int base;
{
char *cp;
int ret;
ret = (int)strtol(str, &cp, base);
if (cp == str || *cp)
errx(EEXIT, "-%c flag requires a %s", flag, req);
return (ret);
}
/*
* Determine whether a filesystem should be checked.
*/
static int
docheck(fsp)
register struct fstab *fsp;
{
if (strcmp(fsp->fs_vfstype, "ufs") ||
(strcmp(fsp->fs_type, FSTAB_RW) &&
strcmp(fsp->fs_type, FSTAB_RO)) ||
fsp->fs_passno == 0)
return (0);
return (1);
}
/*
* Check the specified filesystem.
*/
/* ARGSUSED */
static int
checkfilesys(filesys, mntpt, auxdata, child)
char *filesys, *mntpt;
long auxdata;
int child;
{
ufs_daddr_t n_ffree, n_bfree;
struct dups *dp;
struct zlncnt *zlnp;
int cylno, flags;
if (preen && child)
(void)signal(SIGQUIT, voidquit);
cdevname = filesys;
if (debug && preen)
pwarn("starting\n");
switch (setup(filesys)) {
case 0:
if (preen)
pfatal("CAN'T CHECK FILE SYSTEM.");
return (0);
case -1:
pwarn("clean, %ld free ", sblock.fs_cstotal.cs_nffree +
sblock.fs_frag * sblock.fs_cstotal.cs_nbfree);
printf("(%d frags, %d blocks, %.1f%% fragmentation)\n",
sblock.fs_cstotal.cs_nffree, sblock.fs_cstotal.cs_nbfree,
sblock.fs_cstotal.cs_nffree * 100.0 / sblock.fs_dsize);
return (0);
}
/*
* Cleared if any questions answered no. Used to decide if
* the superblock should be marked clean.
*/
resolved = 1;
/*
* 1: scan inodes tallying blocks used
*/
if (preen == 0) {
printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
if (hotroot)
printf("** Root file system\n");
printf("** Phase 1 - Check Blocks and Sizes\n");
}
pass1();
/*
* 1b: locate first references to duplicates, if any
*/
if (duplist) {
if (preen || usedsoftdep)
pfatal("INTERNAL ERROR: dups with -p");
printf("** Phase 1b - Rescan For More DUPS\n");
pass1b();
}
/*
* 2: traverse directories from root to mark all connected directories
*/
if (preen == 0)
printf("** Phase 2 - Check Pathnames\n");
pass2();
/*
* 3: scan inodes looking for disconnected directories
*/
if (preen == 0)
printf("** Phase 3 - Check Connectivity\n");
pass3();
/*
* 4: scan inodes looking for disconnected files; check reference counts
*/
if (preen == 0)
printf("** Phase 4 - Check Reference Counts\n");
pass4();
/*
* 5: check and repair resource counts in cylinder groups
*/
if (preen == 0)
printf("** Phase 5 - Check Cyl groups\n");
pass5();
/*
* print out summary statistics
*/
n_ffree = sblock.fs_cstotal.cs_nffree;
n_bfree = sblock.fs_cstotal.cs_nbfree;
pwarn("%ld files, %ld used, %ld free ",
n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree);
printf("(%d frags, %d blocks, %.1f%% fragmentation)\n",
n_ffree, n_bfree, n_ffree * 100.0 / sblock.fs_dsize);
if (debug &&
(n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree))
printf("%d files missing\n", 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("%d blocks missing\n", n_blks);
if (duplist != NULL) {
printf("The following duplicate blocks remain:");
for (dp = duplist; dp; dp = dp->next)
printf(" %d,", dp->dup);
printf("\n");
}
if (zlnhead != NULL) {
printf("The following zero link count inodes remain:");
for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
printf(" %u,", 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 (cvtlevel && sblk.b_dirty) {
/*
* Write out the duplicate super blocks
*/
for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
bwrite(fswritefd, (char *)&sblock,
fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE);
}
if (rerun)
resolved = 0;
flags = 0;
if (hotroot) {
struct statfs stfs_buf;
/*
* Check to see if root is mounted read-write.
*/
if (statfs("/", &stfs_buf) == 0)
flags = stfs_buf.f_flags;
if ((flags & MNT_RDONLY) == 0)
resolved = 0;
}
ckfini(resolved);
for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
if (inostathead[cylno].il_stat != NULL)
free((char *)inostathead[cylno].il_stat);
free((char *)inostathead);
inostathead = NULL;
if (fsmodified && !preen)
printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
if (rerun)
printf("\n***** PLEASE RERUN FSCK *****\n");
if (hotroot) {
struct ufs_args args;
int ret;
/*
* We modified the root. Do a mount update on
* it, unless it is read-write, so we can continue.
*/
if (flags & MNT_RDONLY) {
args.fspec = 0;
args.export.ex_flags = 0;
args.export.ex_root = 0;
flags |= MNT_UPDATE | MNT_RELOAD;
ret = mount("ufs", "/", flags, &args);
if (ret == 0)
return (0);
}
if (!fsmodified)
return (0);
if (!preen)
printf("\n***** REBOOT NOW *****\n");
sync();
return (4);
}
return (0);
}