main.c revision 1.52 
1/*	$NetBSD: main.c,v 1.52 2004/10/11 15:24:09 dbj Exp $	*/
2
3/*
4 * Copyright (c) 1980, 1986, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33#ifndef lint
34__COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1993\n\
35	The Regents of the University of California.  All rights reserved.\n");
36#endif /* not lint */
37
38#ifndef lint
39#if 0
40static char sccsid[] = "@(#)main.c	8.6 (Berkeley) 5/14/95";
41#else
42__RCSID("$NetBSD: main.c,v 1.52 2004/10/11 15:24:09 dbj Exp $");
43#endif
44#endif /* not lint */
45
46#include <sys/param.h>
47#include <sys/time.h>
48#include <sys/mount.h>
49#include <sys/resource.h>
50
51#include <ufs/ufs/dinode.h>
52#include <ufs/ufs/ufsmount.h>
53#include <ufs/ffs/fs.h>
54#include <ufs/ffs/ffs_extern.h>
55
56#include <ctype.h>
57#include <err.h>
58#include <fstab.h>
59#include <string.h>
60#include <time.h>
61#include <ctype.h>
62#include <stdio.h>
63#include <stdlib.h>
64#include <unistd.h>
65
66#include "fsck.h"
67#include "extern.h"
68#include "fsutil.h"
69
70int	returntosingle;
71
72int	main __P((int, char *[]));
73
74static int	argtoi __P((int, char *, char *, int));
75static int	checkfilesys __P((const char *, char *, long, int));
76static  void usage __P((void));
77
78int
79main(argc, argv)
80	int	argc;
81	char	*argv[];
82{
83	struct rlimit r;
84	int ch;
85	int ret = 0;
86
87	if (getrlimit(RLIMIT_DATA, &r) == 0) {
88		r.rlim_cur = r.rlim_max;
89		(void) setrlimit(RLIMIT_DATA, &r);
90	}
91	sync();
92	skipclean = 1;
93	markclean = 1;
94	forceimage = 0;
95	endian = 0;
96	isappleufs = 0;
97	while ((ch = getopt(argc, argv, "aB:b:c:dFfm:npqy")) != -1) {
98		switch (ch) {
99		case 'a':
100			isappleufs = 1;
101			break;
102
103		case 'B':
104			if (strcmp(optarg, "be") == 0)
105				endian = BIG_ENDIAN;
106			else if (strcmp(optarg, "le") == 0)
107				endian = LITTLE_ENDIAN;
108			else usage();
109			break;
110
111		case 'b':
112			skipclean = 0;
113			bflag = argtoi('b', "number", optarg, 10);
114			printf("Alternate super block location: %d\n", bflag);
115			break;
116
117		case 'c':
118			skipclean = 0;
119			cvtlevel = argtoi('c', "conversion level", optarg, 10);
120			if (cvtlevel > 4) {
121				cvtlevel = 4;
122				warnx("Using maximum conversion level of %d\n",cvtlevel);
123			}
124			break;
125
126		case 'd':
127			debug++;
128			break;
129
130		case 'F':
131			forceimage = 1;
132			break;
133
134		case 'f':
135			skipclean = 0;
136			break;
137
138		case 'm':
139			lfmode = argtoi('m', "mode", optarg, 8);
140			if (lfmode &~ 07777)
141				errx(EEXIT, "bad mode to -m: %o", lfmode);
142			printf("** lost+found creation mode %o\n", lfmode);
143			break;
144
145		case 'n':
146			nflag++;
147			yflag = 0;
148			break;
149
150		case 'p':
151			preen++;
152			break;
153
154		case 'q':
155			quiet++;
156			break;
157
158		case 'y':
159			yflag++;
160			nflag = 0;
161			break;
162
163		default:
164			usage();
165		}
166	}
167
168	argc -= optind;
169	argv += optind;
170
171	if (!argc)
172		usage();
173
174	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
175		(void)signal(SIGINT, catch);
176	if (preen)
177		(void)signal(SIGQUIT, catchquit);
178	signal(SIGINFO, infohandler);
179
180	while (argc-- > 0) {
181		const char *path = blockcheck(*argv);
182
183		if (path == NULL)
184			pfatal("Can't check %s\n", *argv);
185		else
186			(void)checkfilesys(blockcheck(*argv), 0, 0L, 0);
187		argv++;
188	}
189
190	if (returntosingle)
191		ret = 2;
192
193	exit(ret);
194}
195
196static int
197argtoi(flag, req, str, base)
198	int flag;
199	char *req, *str;
200	int base;
201{
202	char *cp;
203	int ret;
204
205	ret = (int)strtol(str, &cp, base);
206	if (cp == str || *cp)
207		errx(EEXIT, "-%c flag requires a %s", flag, req);
208	return (ret);
209}
210
211/*
212 * Check the specified filesystem.
213 */
214/* ARGSUSED */
215static int
216checkfilesys(filesys, mntpt, auxdata, child)
217	const char *filesys;
218	char *mntpt;
219	long auxdata;
220	int child;
221{
222	daddr_t n_ffree, n_bfree;
223	struct dups *dp;
224	struct zlncnt *zlnp;
225	int cylno;
226#ifdef LITE2BORKEN
227	int flags;
228#endif
229
230	if (preen && child)
231		(void)signal(SIGQUIT, voidquit);
232	setcdevname(filesys, preen);
233	if (debug && preen)
234		pwarn("starting\n");
235	switch (setup(filesys)) {
236	case 0:
237		if (preen)
238			pfatal("CAN'T CHECK FILE SYSTEM.");
239		/* fall through */
240	case -1:
241		return (0);
242	}
243	/*
244	 * Cleared if any questions answered no. Used to decide if
245	 * the superblock should be marked clean.
246	 */
247	resolved = 1;
248	/*
249	 * 1: scan inodes tallying blocks used
250	 */
251	if (preen == 0) {
252		pwarn("** Last Mounted on %s\n", sblock->fs_fsmnt);
253		if (hotroot())
254			pwarn("** Root file system\n");
255		pwarn("** Phase 1 - Check Blocks and Sizes\n");
256	}
257	pass1();
258
259	/*
260	 * 1b: locate first references to duplicates, if any
261	 */
262	if (duplist) {
263		if (preen)
264			pfatal("INTERNAL ERROR: dups with -p\n");
265		if (usedsoftdep)
266			pfatal("INTERNAL ERROR: dups with softdep\n");
267		pwarn("** Phase 1b - Rescan For More DUPS\n");
268		pass1b();
269	}
270
271	/*
272	 * 2: traverse directories from root to mark all connected directories
273	 */
274	if (preen == 0)
275		pwarn("** Phase 2 - Check Pathnames\n");
276	pass2();
277
278	/*
279	 * 3: scan inodes looking for disconnected directories
280	 */
281	if (preen == 0)
282		pwarn("** Phase 3 - Check Connectivity\n");
283	pass3();
284
285	/*
286	 * 4: scan inodes looking for disconnected files; check reference counts
287	 */
288	if (preen == 0)
289		pwarn("** Phase 4 - Check Reference Counts\n");
290	pass4();
291
292	/*
293	 * 5: check and repair resource counts in cylinder groups
294	 */
295	if (preen == 0)
296		pwarn("** Phase 5 - Check Cyl groups\n");
297	pass5();
298
299	/*
300	 * print out summary statistics
301	 */
302	n_ffree = sblock->fs_cstotal.cs_nffree;
303	n_bfree = sblock->fs_cstotal.cs_nbfree;
304	pwarn("%d files, %lld used, %lld free ",
305	    n_files, (long long)n_blks,
306	    (long long)(n_ffree + sblock->fs_frag * n_bfree));
307	printf("(%lld frags, %lld blocks, %lld.%lld%% fragmentation)\n",
308	    (long long)n_ffree, (long long)n_bfree,
309	    (long long)(n_ffree * 100 / (daddr_t)sblock->fs_dsize),
310	    (long long)(((n_ffree * 1000 + (daddr_t)sblock->fs_dsize / 2)
311		/ (daddr_t)sblock->fs_dsize) % 10));
312	if (debug &&
313	    (n_files -= maxino - ROOTINO - sblock->fs_cstotal.cs_nifree))
314		printf("%d files missing\n", n_files);
315	if (debug) {
316		n_blks += sblock->fs_ncg *
317			(cgdmin(sblock, 0) - cgsblock(sblock, 0));
318		n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0);
319		n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize);
320		if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree))
321			printf("%lld blocks missing\n", (long long)n_blks);
322		if (duplist != NULL) {
323			printf("The following duplicate blocks remain:");
324			for (dp = duplist; dp; dp = dp->next)
325				printf(" %lld,", (long long)dp->dup);
326			printf("\n");
327		}
328		if (zlnhead != NULL) {
329			printf("The following zero link count inodes remain:");
330			for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
331				printf(" %u,", zlnp->zlncnt);
332			printf("\n");
333		}
334	}
335	zlnhead = (struct zlncnt *)0;
336	duplist = (struct dups *)0;
337	muldup = (struct dups *)0;
338	inocleanup();
339	if (fsmodified) {
340		sblock->fs_time = time(NULL);
341		sbdirty();
342	}
343	if (rerun)
344		markclean = 0;
345#if LITE2BORKEN
346	if (!hotroot()) {
347		ckfini();
348	} else {
349		struct statvfs stfs_buf;
350		/*
351		 * Check to see if root is mounted read-write.
352		 */
353		if (statvfs("/", &stfs_buf) == 0)
354			flags = stfs_buf.f_flag;
355		else
356			flags = 0;
357		if (markclean)
358			markclean = flags & MNT_RDONLY;
359		ckfini();
360	}
361#else
362	ckfini();
363#endif
364	for (cylno = 0; cylno < sblock->fs_ncg; cylno++)
365		if (inostathead[cylno].il_stat != NULL)
366			free(inostathead[cylno].il_stat);
367	free(inostathead);
368	inostathead = NULL;
369
370	if (!resolved || rerun) {
371		pwarn("\n***** UNRESOLVED INCONSISTENCIES REMAIN *****\n");
372		returntosingle = 1;
373	}
374	if (!fsmodified)
375		return (0);
376	if (!preen)
377		pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n");
378	if (rerun)
379		pwarn("\n***** PLEASE RERUN FSCK *****\n");
380	if (hotroot()) {
381		struct statvfs stfs_buf;
382		/*
383		 * We modified the root.  Do a mount update on
384		 * it, unless it is read-write, so we can continue.
385		 */
386		if (statvfs("/", &stfs_buf) == 0) {
387			long flags = stfs_buf.f_flag;
388			struct ufs_args args;
389			int ret;
390
391			if (flags & MNT_RDONLY) {
392				args.fspec = 0;
393				args.export.ex_flags = 0;
394				args.export.ex_root = 0;
395				flags |= MNT_UPDATE | MNT_RELOAD;
396				ret = mount(MOUNT_FFS, "/", flags, &args);
397				if (ret == 0)
398					return(0);
399			}
400		}
401		if (!preen)
402			pwarn("\n***** REBOOT NOW *****\n");
403		sync();
404		return (4);
405	}
406	return (0);
407}
408
409static void
410usage()
411{
412
413	(void) fprintf(stderr,
414	    "usage: %s [-adFfnpqy] [-B be|le] [-b block] [-c level] [-m mode]"
415	    " filesystem ...\n",
416	    getprogname());
417	exit(1);
418}
419
420