NetBSD/sbin/fsck_ffs/main.c

312 lines
7.5 KiB
C

/*
* Copyright (c) 1980, 1986 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
char copyright[] =
"@(#) Copyright (c) 1980, 1986 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#ifndef lint
/*static char sccsid[] = "from: @(#)main.c 5.27 (Berkeley) 8/7/90";*/
static char rcsid[] = "$Id: main.c,v 1.10 1993/10/15 15:15:25 cgd Exp $";
#endif /* not lint */
#include <sys/param.h>
#include <ufs/dinode.h>
#include <ufs/fs.h>
#include <fstab.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>
#include "fsck.h"
void catch(), catchquit(), voidquit();
int returntosingle;
main(argc, argv)
int argc;
char *argv[];
{
int ch;
int ret, maxrun = 0;
extern int docheck(), checkfilesys();
extern char *optarg;
extern int optind;
sync();
while ((ch = getopt(argc, argv, "cdpnNyYb:l:m:")) != EOF) {
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':
cvtflag++;
break;
case 'd':
debug++;
break;
case 'l':
maxrun = argtoi('l', "number", optarg, 10);
break;
case 'm':
lfmode = argtoi('m', "mode", optarg, 8);
if (lfmode &~ 07777)
errexit("bad mode to -m: %o\n", 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:
errexit("%c option?\n", ch);
}
}
argc -= optind;
argv += optind;
if (signal(SIGINT, SIG_IGN) != SIG_IGN)
(void)signal(SIGINT, catch);
if (preen)
(void)signal(SIGQUIT, catchquit);
if (argc) {
while (argc-- > 0)
(void)checkfilesys(*argv++, (char *)0, 0L, 0);
exit(0);
}
ret = checkfstab(preen, maxrun, docheck, checkfilesys);
if (returntosingle)
exit(2);
exit(ret);
}
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)
errexit("-%c flag requires a %s\n", flag, req);
return (ret);
}
/*
* Determine whether a filesystem should be checked.
*/
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 */
checkfilesys(filesys, mntpt, auxdata, child)
char *filesys, *mntpt;
long auxdata;
{
daddr_t n_ffree, n_bfree;
struct dups *dp;
struct zlncnt *zlnp;
int clean;
if (preen && child)
(void)signal(SIGQUIT, voidquit);
devname = filesys;
if (debug && preen)
pwarn("starting\n");
if (setup(filesys) == 0) {
if (preen)
pfatal("CAN'T CHECK FILE SYSTEM.");
return (0);
}
/*
* 0: check whether file system is already clean
*/
clean = preen && (sblock.fs_state == FSOKAY) && sblock.fs_clean;
#ifdef notyet
if (clean) {
#else
if (0) {
#endif
printf("** filesystem clean -- skipping checks\n");
} else {
/*
* 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)
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("(%ld frags, %ld blocks, %.1f%% fragmentation)\n",
n_ffree, n_bfree, (float)(n_ffree * 100) / sblock.fs_dsize);
if (debug &&
(n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree))
printf("%ld 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("%ld blocks missing\n", n_blks);
if (duplist != NULL) {
printf("The following duplicate blocks remain:");
for (dp = duplist; dp; dp = dp->next)
printf(" %ld,", dp->dup);
printf("\n");
}
if (zlnhead != NULL) {
printf("The following zero link count inodes remain:");
for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
printf(" %lu,", zlnp->zlncnt);
printf("\n");
}
}
zlnhead = (struct zlncnt *)0;
duplist = (struct dups *)0;
inocleanup();
#ifdef notyet
if (!clean && !nflag && fswritefd != -1) {
sblock.fs_state = FSOKAY;
sblock.fs_clean = FS_CLEANFREQ;
fsmodified = 1;
}
#endif
if (fsmodified) {
(void)time(&sblock.fs_time);
sbdirty();
}
ckfini();
free(blockmap);
free(statemap);
free((char *)lncntp);
if (!fsmodified)
return (0);
if (!preen) {
printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
if (hotroot)
printf("\n***** REBOOT UNIX *****\n");
}
if (hotroot) {
sync();
return (4);
}
return (0);
}