xref: /csrg-svn/sbin/fsck/main.c (revision 68908)
122047Sdist /*
261492Sbostic  * Copyright (c) 1980, 1986, 1993
361492Sbostic  *	The Regents of the University of California.  All rights reserved.
439976Smckusick  *
542701Sbostic  * %sccs.include.redist.c%
622047Sdist  */
722047Sdist 
812728Ssam #ifndef lint
961492Sbostic static char copyright[] =
1061492Sbostic "@(#) Copyright (c) 1980, 1986, 1993\n\
1161492Sbostic 	The Regents of the University of California.  All rights reserved.\n";
1239976Smckusick #endif /* not lint */
134428Smckusic 
1422047Sdist #ifndef lint
15*68908Smckusick static char sccsid[] = "@(#)main.c	8.4 (Berkeley) 04/27/95";
1639976Smckusick #endif /* not lint */
1722047Sdist 
186489Smckusick #include <sys/param.h>
1953703Smckusick #include <sys/time.h>
2057046Smckusick #include <sys/mount.h>
21*68908Smckusick 
2251532Sbostic #include <ufs/ufs/dinode.h>
23*68908Smckusick #include <ufs/ufs/ufsmount.h>
2451532Sbostic #include <ufs/ffs/fs.h>
25*68908Smckusick 
26*68908Smckusick #include <ctype.h>
27*68908Smckusick #include <err.h>
2817930Smckusick #include <fstab.h>
2942041Sbostic #include <string.h>
30*68908Smckusick 
3116257Smckusick #include "fsck.h"
324236Smckusick 
3324679Skarels int	returntosingle;
3417930Smckusick 
35*68908Smckusick static int argtoi __P((int flag, char *req, char *str, int base));
36*68908Smckusick static int docheck __P((struct fstab *fsp));
37*68908Smckusick static int checkfilesys __P((char *filesys, char *mntpt, long auxdata,
38*68908Smckusick 		int child));
39*68908Smckusick void main __P((int argc, char *argv[]));
40*68908Smckusick 
41*68908Smckusick void
4217930Smckusick main(argc, argv)
4317930Smckusick 	int	argc;
4417930Smckusick 	char	*argv[];
4517930Smckusick {
4644933Smckusick 	int ch;
4741099Smckusick 	int ret, maxrun = 0;
48*68908Smckusick 	extern char *optarg;
4941417Smckusick 	extern int optind;
5017930Smckusick 
5117930Smckusick 	sync();
5254602Smckusick 	while ((ch = getopt(argc, argv, "dpnNyYb:c:l:m:")) != EOF) {
5341417Smckusick 		switch (ch) {
5417930Smckusick 		case 'p':
5517930Smckusick 			preen++;
5617930Smckusick 			break;
5717930Smckusick 
5817930Smckusick 		case 'b':
5944933Smckusick 			bflag = argtoi('b', "number", optarg, 10);
6017930Smckusick 			printf("Alternate super block location: %d\n", bflag);
6117930Smckusick 			break;
6217930Smckusick 
6334139Smckusick 		case 'c':
6454602Smckusick 			cvtlevel = argtoi('c', "conversion level", optarg, 10);
6534139Smckusick 			break;
6654602Smckusick 
6717930Smckusick 		case 'd':
6817930Smckusick 			debug++;
6917930Smckusick 			break;
7017930Smckusick 
7137216Skarels 		case 'l':
7244933Smckusick 			maxrun = argtoi('l', "number", optarg, 10);
7337216Skarels 			break;
7437216Skarels 
7536827Smckusick 		case 'm':
7644933Smckusick 			lfmode = argtoi('m', "mode", optarg, 8);
7736827Smckusick 			if (lfmode &~ 07777)
78*68908Smckusick 				errx(EEXIT, "bad mode to -m: %o", lfmode);
7936827Smckusick 			printf("** lost+found creation mode %o\n", lfmode);
8036827Smckusick 			break;
8136827Smckusick 
8239972Smckusick 		case 'n':
8317930Smckusick 		case 'N':
8417930Smckusick 			nflag++;
8517930Smckusick 			yflag = 0;
8617930Smckusick 			break;
8717930Smckusick 
8839972Smckusick 		case 'y':
8917930Smckusick 		case 'Y':
9017930Smckusick 			yflag++;
9117930Smckusick 			nflag = 0;
9217930Smckusick 			break;
9317930Smckusick 
9417930Smckusick 		default:
95*68908Smckusick 			errx(EEXIT, "%c option?", ch);
9617930Smckusick 		}
9717930Smckusick 	}
9841417Smckusick 	argc -= optind;
9941417Smckusick 	argv += optind;
10017930Smckusick 	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
10117930Smckusick 		(void)signal(SIGINT, catch);
10224679Skarels 	if (preen)
10324679Skarels 		(void)signal(SIGQUIT, catchquit);
10417930Smckusick 	if (argc) {
10541417Smckusick 		while (argc-- > 0)
10657046Smckusick 			(void)checkfilesys(blockcheck(*argv++), 0, 0L, 0);
10717930Smckusick 		exit(0);
10817930Smckusick 	}
10941099Smckusick 	ret = checkfstab(preen, maxrun, docheck, checkfilesys);
11024679Skarels 	if (returntosingle)
11124679Skarels 		exit(2);
11241099Smckusick 	exit(ret);
11317930Smckusick }
11417930Smckusick 
115*68908Smckusick static int
11644933Smckusick argtoi(flag, req, str, base)
11744933Smckusick 	int flag;
11844933Smckusick 	char *req, *str;
11944933Smckusick 	int base;
12044933Smckusick {
12144933Smckusick 	char *cp;
12244933Smckusick 	int ret;
12344933Smckusick 
12444933Smckusick 	ret = (int)strtol(str, &cp, base);
12544933Smckusick 	if (cp == str || *cp)
126*68908Smckusick 		errx(EEXIT, "-%c flag requires a %s", flag, req);
12744933Smckusick 	return (ret);
12844933Smckusick }
12944933Smckusick 
13041099Smckusick /*
13141099Smckusick  * Determine whether a filesystem should be checked.
13241099Smckusick  */
133*68908Smckusick static int
13441099Smckusick docheck(fsp)
13541099Smckusick 	register struct fstab *fsp;
13637216Skarels {
13737216Skarels 
13841099Smckusick 	if (strcmp(fsp->fs_vfstype, "ufs") ||
13941099Smckusick 	    (strcmp(fsp->fs_type, FSTAB_RW) &&
14041099Smckusick 	     strcmp(fsp->fs_type, FSTAB_RO)) ||
14141099Smckusick 	    fsp->fs_passno == 0)
14241099Smckusick 		return (0);
14341099Smckusick 	return (1);
14437216Skarels }
14537216Skarels 
14641099Smckusick /*
14741099Smckusick  * Check the specified filesystem.
14841099Smckusick  */
14941099Smckusick /* ARGSUSED */
150*68908Smckusick static int
15145027Skarels checkfilesys(filesys, mntpt, auxdata, child)
15241099Smckusick 	char *filesys, *mntpt;
15341099Smckusick 	long auxdata;
154*68908Smckusick 	int child;
15537216Skarels {
15668548Smckusick 	ufs_daddr_t n_ffree, n_bfree;
15721760Smckusick 	struct dups *dp;
15826479Smckusick 	struct zlncnt *zlnp;
15954602Smckusick 	int cylno;
1604236Smckusick 
16145027Skarels 	if (preen && child)
16245027Skarels 		(void)signal(SIGQUIT, voidquit);
16361110Sbostic 	cdevname = filesys;
16437216Skarels 	if (debug && preen)
16537216Skarels 		pwarn("starting\n");
1669255Smckusick 	if (setup(filesys) == 0) {
1674236Smckusick 		if (preen)
1689255Smckusick 			pfatal("CAN'T CHECK FILE SYSTEM.");
16941099Smckusick 		return (0);
1704236Smckusick 	}
17117936Smckusick 	/*
17217936Smckusick 	 * 1: scan inodes tallying blocks used
17317936Smckusick 	 */
1746837Smckusick 	if (preen == 0) {
1756837Smckusick 		printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
1764236Smckusick 		if (hotroot)
1774236Smckusick 			printf("** Root file system\n");
1784236Smckusick 		printf("** Phase 1 - Check Blocks and Sizes\n");
1794236Smckusick 	}
1809255Smckusick 	pass1();
1819255Smckusick 
18217936Smckusick 	/*
18317936Smckusick 	 * 1b: locate first references to duplicates, if any
18417936Smckusick 	 */
18521743Smckusick 	if (duplist) {
1869255Smckusick 		if (preen)
1879255Smckusick 			pfatal("INTERNAL ERROR: dups with -p");
1889255Smckusick 		printf("** Phase 1b - Rescan For More DUPS\n");
1899255Smckusick 		pass1b();
1909255Smckusick 	}
1919255Smckusick 
19217936Smckusick 	/*
19317936Smckusick 	 * 2: traverse directories from root to mark all connected directories
19417936Smckusick 	 */
1959255Smckusick 	if (preen == 0)
1969255Smckusick 		printf("** Phase 2 - Check Pathnames\n");
1979255Smckusick 	pass2();
1989255Smckusick 
19917936Smckusick 	/*
20017936Smckusick 	 * 3: scan inodes looking for disconnected directories
20117936Smckusick 	 */
2029255Smckusick 	if (preen == 0)
2039255Smckusick 		printf("** Phase 3 - Check Connectivity\n");
2049255Smckusick 	pass3();
2059255Smckusick 
20617936Smckusick 	/*
20717936Smckusick 	 * 4: scan inodes looking for disconnected files; check reference counts
20817936Smckusick 	 */
2099255Smckusick 	if (preen == 0)
2109255Smckusick 		printf("** Phase 4 - Check Reference Counts\n");
2119255Smckusick 	pass4();
2129255Smckusick 
21317936Smckusick 	/*
21417936Smckusick 	 * 5: check and repair resource counts in cylinder groups
21517936Smckusick 	 */
2169255Smckusick 	if (preen == 0)
2179255Smckusick 		printf("** Phase 5 - Check Cyl groups\n");
2189255Smckusick 	pass5();
2199255Smckusick 
22017936Smckusick 	/*
22117936Smckusick 	 * print out summary statistics
22217936Smckusick 	 */
22317936Smckusick 	n_ffree = sblock.fs_cstotal.cs_nffree;
22417936Smckusick 	n_bfree = sblock.fs_cstotal.cs_nbfree;
22544933Smckusick 	pwarn("%ld files, %ld used, %ld free ",
22625288Smckusick 	    n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree);
22753055Smckusick 	printf("(%ld frags, %ld blocks, %d.%d%% fragmentation)\n",
22853055Smckusick 	    n_ffree, n_bfree, (n_ffree * 100) / sblock.fs_dsize,
22953055Smckusick 	    ((n_ffree * 1000 + sblock.fs_dsize / 2) / sblock.fs_dsize) % 10);
23039972Smckusick 	if (debug &&
23139972Smckusick 	    (n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree))
23244933Smckusick 		printf("%ld files missing\n", n_files);
23317936Smckusick 	if (debug) {
23417936Smckusick 		n_blks += sblock.fs_ncg *
23517936Smckusick 			(cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
23617936Smckusick 		n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
23717936Smckusick 		n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
23839972Smckusick 		if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree))
23944933Smckusick 			printf("%ld blocks missing\n", n_blks);
24021760Smckusick 		if (duplist != NULL) {
24121760Smckusick 			printf("The following duplicate blocks remain:");
24221760Smckusick 			for (dp = duplist; dp; dp = dp->next)
24344933Smckusick 				printf(" %ld,", dp->dup);
24421760Smckusick 			printf("\n");
24521760Smckusick 		}
24626479Smckusick 		if (zlnhead != NULL) {
24726479Smckusick 			printf("The following zero link count inodes remain:");
24826479Smckusick 			for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
24944933Smckusick 				printf(" %lu,", zlnp->zlncnt);
25026479Smckusick 			printf("\n");
25126479Smckusick 		}
2529255Smckusick 	}
25326479Smckusick 	zlnhead = (struct zlncnt *)0;
25426479Smckusick 	duplist = (struct dups *)0;
25551354Smckusick 	muldup = (struct dups *)0;
25639980Smckusick 	inocleanup();
25739972Smckusick 	if (fsmodified) {
25814952Smckusick 		(void)time(&sblock.fs_time);
2599255Smckusick 		sbdirty();
2609255Smckusick 	}
26154602Smckusick 	if (cvtlevel && sblk.b_dirty) {
26254602Smckusick 		/*
26354602Smckusick 		 * Write out the duplicate super blocks
26454602Smckusick 		 */
26554602Smckusick 		for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
26654602Smckusick 			bwrite(fswritefd, (char *)&sblock,
26754602Smckusick 			    fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE);
26854602Smckusick 	}
2699255Smckusick 	ckfini();
2709255Smckusick 	free(blockmap);
2719255Smckusick 	free(statemap);
27214952Smckusick 	free((char *)lncntp);
27339972Smckusick 	if (!fsmodified)
27441099Smckusick 		return (0);
27557046Smckusick 	if (!preen)
27613729Sroot 		printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
27713729Sroot 	if (hotroot) {
27857046Smckusick 		struct statfs stfs_buf;
27957046Smckusick 		/*
28057046Smckusick 		 * We modified the root.  Do a mount update on
28157046Smckusick 		 * it, unless it is read-write, so we can continue.
28257046Smckusick 		 */
28357046Smckusick 		if (statfs("/", &stfs_buf) == 0) {
28457046Smckusick 			long flags = stfs_buf.f_flags;
28557046Smckusick 			struct ufs_args args;
28657046Smckusick 			int ret;
28757046Smckusick 
28857046Smckusick 			if (flags & MNT_RDONLY) {
28957046Smckusick 				args.fspec = 0;
29065842Sbostic 				args.export.ex_flags = 0;
29165842Sbostic 				args.export.ex_root = 0;
29257046Smckusick 				flags |= MNT_UPDATE | MNT_RELOAD;
293*68908Smckusick 				ret = mount("ufs", "/", flags, &args);
29457046Smckusick 				if (ret == 0)
29557046Smckusick 					return(0);
29657046Smckusick 			}
29757046Smckusick 		}
29857046Smckusick 		if (!preen)
29957046Smckusick 			printf("\n***** REBOOT NOW *****\n");
30013729Sroot 		sync();
30141099Smckusick 		return (4);
30213729Sroot 	}
30317930Smckusick 	return (0);
30417930Smckusick }
305