main.c revision 1.21 
1/*	$NetBSD: main.c,v 1.21 2005/06/26 23:01:39 christos 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/*
33 * Copyright (c) 1997 Manuel Bouyer.
34 *
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
37 * are met:
38 * 1. Redistributions of source code must retain the above copyright
39 *    notice, this list of conditions and the following disclaimer.
40 * 2. Redistributions in binary form must reproduce the above copyright
41 *    notice, this list of conditions and the following disclaimer in the
42 *    documentation and/or other materials provided with the distribution.
43 * 3. All advertising materials mentioning features or use of this software
44 *    must display the following acknowledgement:
45 *	This product includes software developed by Manuel Bouyer.
46 * 4. The name of the author may not be used to endorse or promote products
47 *    derived from this software without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
50 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
51 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
52 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
53 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
54 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
55 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
56 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
57 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
58 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
59 */
60
61#include <sys/cdefs.h>
62#ifndef lint
63__COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1993\n\
64	The Regents of the University of California.  All rights reserved.\n");
65#endif /* not lint */
66
67#ifndef lint
68#if 0
69static char sccsid[] = "@(#)main.c	8.2 (Berkeley) 1/23/94";
70#else
71__RCSID("$NetBSD: main.c,v 1.21 2005/06/26 23:01:39 christos Exp $");
72#endif
73#endif /* not lint */
74
75#include <sys/param.h>
76#include <sys/time.h>
77#include <sys/mount.h>
78#include <ufs/ufs/ufsmount.h>
79#include <ufs/ext2fs/ext2fs_dinode.h>
80#include <ufs/ext2fs/ext2fs.h>
81#include <fstab.h>
82#include <stdlib.h>
83#include <string.h>
84#include <ctype.h>
85#include <stdio.h>
86#include <time.h>
87#include <unistd.h>
88
89#include "fsck.h"
90#include "extern.h"
91#include "fsutil.h"
92
93int	returntosingle;
94
95
96static int	argtoi(int, const char *, const char *, int);
97static int	checkfilesys(const char *, char *, long, int);
98static void	usage(void);
99
100int
101main(int argc, char *argv[])
102{
103	int ch;
104	int ret = 0;
105
106	sync();
107	skipclean = 1;
108	while ((ch = getopt(argc, argv, "b:dfm:npqy")) != -1) {
109		switch (ch) {
110		case 'b':
111			skipclean = 0;
112			bflag = argtoi('b', "number", optarg, 10);
113			printf("Alternate super block location: %d\n", bflag);
114			break;
115
116		case 'd':
117			debug++;
118			break;
119
120		case 'f':
121			skipclean = 0;
122			break;
123
124		case 'm':
125			lfmode = argtoi('m', "mode", optarg, 8);
126			if (lfmode &~ 07777)
127				errexit("bad mode to -m: %o\n", lfmode);
128			printf("** lost+found creation mode %o\n", lfmode);
129			break;
130
131		case 'n':
132			nflag++;
133			yflag = 0;
134			break;
135
136		case 'p':
137			preen++;
138			break;
139
140		case 'P':
141			/* Progress meter not implemented. */
142			break;
143
144		case 'q':		/* Quiet not implemented */
145			break;
146
147		case 'y':
148			yflag++;
149			nflag = 0;
150			break;
151
152		default:
153			usage();
154		}
155	}
156
157	argc -= optind;
158	argv += optind;
159
160	if (!argc)
161		usage();
162
163	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
164		(void)signal(SIGINT, catch);
165	if (preen)
166		(void)signal(SIGQUIT, catchquit);
167
168	while (argc-- > 0)
169		(void)checkfilesys(blockcheck(*argv++), 0, 0L, 0);
170
171	if (returntosingle)
172		ret = 2;
173
174	exit(ret);
175}
176
177static int
178argtoi(int flag, const char *req, const char *str, int base)
179{
180	char *cp;
181	int ret;
182
183	ret = (int)strtol(str, &cp, base);
184	if (cp == str || *cp)
185		errexit("-%c flag requires a %s\n", flag, req);
186	return (ret);
187}
188
189/*
190 * Check the specified filesystem.
191 */
192/* ARGSUSED */
193static int
194checkfilesys(const char *filesys, char *mntpt, long auxdata, int child)
195{
196	daddr_t n_bfree;
197	struct dups *dp;
198	struct zlncnt *zlnp;
199	int i;
200
201	if (preen && child)
202		(void)signal(SIGQUIT, voidquit);
203	setcdevname(filesys, preen);
204	if (debug && preen)
205		pwarn("starting\n");
206	switch (setup(filesys)) {
207	case 0:
208		if (preen)
209			pfatal("CAN'T CHECK FILE SYSTEM.");
210	case -1:
211		return (0);
212	}
213	/*
214	 * 1: scan inodes tallying blocks used
215	 */
216	if (preen == 0) {
217		if (sblock.e2fs.e2fs_rev > E2FS_REV0) {
218			printf("** Last Mounted on %s\n",
219			    sblock.e2fs.e2fs_fsmnt);
220		}
221		if (hotroot())
222			printf("** Root file system\n");
223		printf("** Phase 1 - Check Blocks and Sizes\n");
224	}
225	pass1();
226
227	/*
228	 * 1b: locate first references to duplicates, if any
229	 */
230	if (duplist) {
231		if (preen)
232			pfatal("INTERNAL ERROR: dups with -p");
233		printf("** Phase 1b - Rescan For More DUPS\n");
234		pass1b();
235	}
236
237	/*
238	 * 2: traverse directories from root to mark all connected directories
239	 */
240	if (preen == 0)
241		printf("** Phase 2 - Check Pathnames\n");
242	pass2();
243
244	/*
245	 * 3: scan inodes looking for disconnected directories
246	 */
247	if (preen == 0)
248		printf("** Phase 3 - Check Connectivity\n");
249	pass3();
250
251	/*
252	 * 4: scan inodes looking for disconnected files; check reference counts
253	 */
254	if (preen == 0)
255		printf("** Phase 4 - Check Reference Counts\n");
256	pass4();
257
258	/*
259	 * 5: check and repair resource counts in cylinder groups
260	 */
261	if (preen == 0)
262		printf("** Phase 5 - Check Cyl groups\n");
263	pass5();
264
265	/*
266	 * print out summary statistics
267	 */
268	n_bfree = sblock.e2fs.e2fs_fbcount;
269
270	pwarn("%lld files, %lld used, %lld free\n",
271	    (long long)n_files, (long long)n_blks, (long long)n_bfree);
272	if (debug &&
273		/* 9 reserved and unused inodes in FS */
274	    (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount))
275		printf("%lld files missing\n", (long long)n_files);
276	if (debug) {
277		for (i = 0; i < sblock.e2fs_ncg; i++)
278			n_blks +=  cgoverhead(i);
279		n_blks += sblock.e2fs.e2fs_first_dblock;
280		if (n_blks -= maxfsblock - n_bfree)
281			printf("%lld blocks missing\n", (long long)n_blks);
282		if (duplist != NULL) {
283			printf("The following duplicate blocks remain:");
284			for (dp = duplist; dp; dp = dp->next)
285				printf(" %lld,", (long long)dp->dup);
286			printf("\n");
287		}
288		if (zlnhead != NULL) {
289			printf("The following zero link count inodes remain:");
290			for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
291				printf(" %u,", zlnp->zlncnt);
292			printf("\n");
293		}
294	}
295	zlnhead = (struct zlncnt *)0;
296	duplist = (struct dups *)0;
297	muldup = (struct dups *)0;
298	inocleanup();
299	if (fsmodified) {
300		time_t t;
301		(void)time(&t);
302		sblock.e2fs.e2fs_wtime = t;
303		sblock.e2fs.e2fs_lastfsck = t;
304		sbdirty();
305	}
306	ckfini(1);
307	free(blockmap);
308	free(statemap);
309	free((char *)lncntp);
310	if (!fsmodified)
311		return (0);
312	if (!preen)
313		printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
314	if (rerun)
315		printf("\n***** PLEASE RERUN FSCK *****\n");
316	if (hotroot()) {
317		struct statvfs stfs_buf;
318		/*
319		 * We modified the root.  Do a mount update on
320		 * it, unless it is read-write, so we can continue.
321		 */
322		if (statvfs("/", &stfs_buf) == 0) {
323			long flags = stfs_buf.f_flag;
324			struct ufs_args args;
325			int ret;
326
327			if (flags & MNT_RDONLY) {
328				args.fspec = 0;
329				args.export.ex_flags = 0;
330				args.export.ex_root = 0;
331				flags |= MNT_UPDATE | MNT_RELOAD;
332				ret = mount(MOUNT_EXT2FS, "/", flags, &args);
333				if (ret == 0)
334					return(0);
335			}
336		}
337		if (!preen)
338			printf("\n***** REBOOT NOW *****\n");
339		sync();
340		return (4);
341	}
342	return (0);
343}
344
345static void
346usage(void)
347{
348
349	(void) fprintf(stderr,
350	    "usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n",
351	    getprogname());
352	exit(1);
353}
354
355