main.c revision 1.26 
1/*	$NetBSD: main.c,v 1.26 2007/07/16 17:06:52 pooka 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 1.26 2007/07/16 17:06:52 pooka 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#include <signal.h>
89
90#include "fsck.h"
91#include "extern.h"
92#include "fsutil.h"
93
94int	returntosingle;
95
96
97static int	argtoi(int, const char *, const char *, int);
98static int	checkfilesys(const char *, char *, long, int);
99static void	usage(void);
100
101int
102main(int argc, char *argv[])
103{
104	int ch;
105	int ret = 0;
106
107	sync();
108	skipclean = 1;
109	while ((ch = getopt(argc, argv, "b:dfm:npqy")) != -1) {
110		switch (ch) {
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 'd':
118			debug++;
119			break;
120
121		case 'f':
122			skipclean = 0;
123			break;
124
125		case 'm':
126			lfmode = argtoi('m', "mode", optarg, 8);
127			if (lfmode &~ 07777)
128				errexit("bad mode to -m: %o\n", lfmode);
129			printf("** lost+found creation mode %o\n", lfmode);
130			break;
131
132		case 'n':
133			nflag++;
134			yflag = 0;
135			break;
136
137		case 'p':
138			preen++;
139			break;
140
141		case 'P':
142			/* Progress meter not implemented. */
143			break;
144
145		case 'q':		/* Quiet not implemented */
146			break;
147
148		case 'y':
149			yflag++;
150			nflag = 0;
151			break;
152
153		default:
154			usage();
155		}
156	}
157
158	argc -= optind;
159	argv += optind;
160
161	if (!argc)
162		usage();
163
164	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
165		(void)signal(SIGINT, catch);
166	if (preen)
167		(void)signal(SIGQUIT, catchquit);
168
169	while (argc-- > 0)
170		(void)checkfilesys(blockcheck(*argv++), 0, 0L, 0);
171
172	if (returntosingle)
173		ret = 2;
174
175	exit(ret);
176}
177
178static int
179argtoi(int flag, const char *req, const char *str, int base)
180{
181	char *cp;
182	int ret;
183
184	ret = (int)strtol(str, &cp, base);
185	if (cp == str || *cp)
186		errexit("-%c flag requires a %s\n", flag, req);
187	return (ret);
188}
189
190/*
191 * Check the specified filesystem.
192 */
193/* ARGSUSED */
194static int
195checkfilesys(const char *filesys, char *mntpt, long auxdata, int child)
196{
197	daddr_t n_bfree;
198	struct dups *dp;
199	struct zlncnt *zlnp;
200	int i;
201
202	if (preen && child)
203		(void)signal(SIGQUIT, voidquit);
204	setcdevname(filesys, preen);
205	if (debug && preen)
206		pwarn("starting\n");
207	switch (setup(filesys)) {
208	case 0:
209		if (preen)
210			pfatal("CAN'T CHECK FILE SYSTEM.");
211	case -1:
212		return (0);
213	}
214	/*
215	 * 1: scan inodes tallying blocks used
216	 */
217	if (preen == 0) {
218		if (sblock.e2fs.e2fs_rev > E2FS_REV0) {
219			printf("** Last Mounted on %s\n",
220			    sblock.e2fs.e2fs_fsmnt);
221		}
222		if (hotroot())
223			printf("** Root file system\n");
224		printf("** Phase 1 - Check Blocks and Sizes\n");
225	}
226	pass1();
227
228	/*
229	 * 1b: locate first references to duplicates, if any
230	 */
231	if (duplist) {
232		if (preen)
233			pfatal("INTERNAL ERROR: dups with -p");
234		printf("** Phase 1b - Rescan For More DUPS\n");
235		pass1b();
236	}
237
238	/*
239	 * 2: traverse directories from root to mark all connected directories
240	 */
241	if (preen == 0)
242		printf("** Phase 2 - Check Pathnames\n");
243	pass2();
244
245	/*
246	 * 3: scan inodes looking for disconnected directories
247	 */
248	if (preen == 0)
249		printf("** Phase 3 - Check Connectivity\n");
250	pass3();
251
252	/*
253	 * 4: scan inodes looking for disconnected files; check reference counts
254	 */
255	if (preen == 0)
256		printf("** Phase 4 - Check Reference Counts\n");
257	pass4();
258
259	/*
260	 * 5: check and repair resource counts in cylinder groups
261	 */
262	if (preen == 0)
263		printf("** Phase 5 - Check Cyl groups\n");
264	pass5();
265
266	/*
267	 * print out summary statistics
268	 */
269	n_bfree = sblock.e2fs.e2fs_fbcount;
270
271	pwarn("%lld files, %lld used, %lld free\n",
272	    (long long)n_files, (long long)n_blks, (long long)n_bfree);
273	if (debug &&
274		/* 9 reserved and unused inodes in FS */
275	    (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount))
276		printf("%lld files missing\n", (long long)n_files);
277	if (debug) {
278		for (i = 0; i < sblock.e2fs_ncg; i++)
279			n_blks +=  cgoverhead(i);
280		n_blks += sblock.e2fs.e2fs_first_dblock;
281		if (n_blks -= maxfsblock - n_bfree)
282			printf("%lld blocks missing\n", (long long)n_blks);
283		if (duplist != NULL) {
284			printf("The following duplicate blocks remain:");
285			for (dp = duplist; dp; dp = dp->next)
286				printf(" %lld,", (long long)dp->dup);
287			printf("\n");
288		}
289		if (zlnhead != NULL) {
290			printf("The following zero link count inodes remain:");
291			for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
292				printf(" %llu,",
293				    (unsigned long long)zlnp->zlncnt);
294			printf("\n");
295		}
296	}
297	zlnhead = (struct zlncnt *)0;
298	duplist = (struct dups *)0;
299	muldup = (struct dups *)0;
300	inocleanup();
301	if (fsmodified) {
302		time_t t;
303		(void)time(&t);
304		sblock.e2fs.e2fs_wtime = t;
305		sblock.e2fs.e2fs_lastfsck = t;
306		sbdirty();
307	}
308	ckfini(1);
309	free(blockmap);
310	free(statemap);
311	free((char *)lncntp);
312	if (!fsmodified)
313		return (0);
314	if (!preen)
315		printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
316	if (rerun)
317		printf("\n***** PLEASE RERUN FSCK *****\n");
318	if (hotroot()) {
319		struct statvfs stfs_buf;
320		/*
321		 * We modified the root.  Do a mount update on
322		 * it, unless it is read-write, so we can continue.
323		 */
324		if (statvfs("/", &stfs_buf) == 0) {
325			long flags = stfs_buf.f_flag;
326			struct ufs_args args;
327			int ret;
328
329			if (flags & MNT_RDONLY) {
330				args.fspec = 0;
331				flags |= MNT_UPDATE | MNT_RELOAD;
332				ret = mount(MOUNT_EXT2FS, "/", flags,
333				    &args, sizeof args);
334				if (ret == 0)
335					return(0);
336			}
337		}
338		if (!preen)
339			printf("\n***** REBOOT NOW *****\n");
340		sync();
341		return (4);
342	}
343	return (0);
344}
345
346static void
347usage(void)
348{
349
350	(void) fprintf(stderr,
351	    "usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n",
352	    getprogname());
353	exit(1);
354}
355
356