main.c revision 1.9 
1/*	$NetBSD: main.c,v 1.9 2001/02/04 21:19:34 christos Exp $	*/
2
3/*
4 * Copyright (c) 1997 Manuel Bouyer.
5 * Copyright (c) 1980, 1986, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#include <sys/cdefs.h>
38#ifndef lint
39__COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1993\n\
40	The Regents of the University of California.  All rights reserved.\n");
41#endif /* not lint */
42
43#ifndef lint
44#if 0
45static char sccsid[] = "@(#)main.c	8.2 (Berkeley) 1/23/94";
46#else
47__RCSID("$NetBSD: main.c,v 1.9 2001/02/04 21:19:34 christos Exp $");
48#endif
49#endif /* not lint */
50
51#include <sys/param.h>
52#include <sys/time.h>
53#include <sys/mount.h>
54#include <ufs/ufs/ufsmount.h>
55#include <ufs/ext2fs/ext2fs_dinode.h>
56#include <ufs/ext2fs/ext2fs.h>
57#include <fstab.h>
58#include <stdlib.h>
59#include <string.h>
60#include <ctype.h>
61#include <stdio.h>
62#include <time.h>
63#include <unistd.h>
64
65#include "fsck.h"
66#include "extern.h"
67#include "fsutil.h"
68
69int	returntosingle;
70
71int	main __P((int, char *[]));
72
73static int	argtoi __P((int, char *, char *, int));
74static int	checkfilesys __P((const char *, char *, long, int));
75static  void usage __P((void));
76
77extern char *__progname;
78
79int
80main(argc, argv)
81	int	argc;
82	char	*argv[];
83{
84	int ch;
85	int ret = 0;
86
87	sync();
88	skipclean = 1;
89	while ((ch = getopt(argc, argv, "b:c:dfm:npy")) != -1) {
90		switch (ch) {
91		case 'b':
92			skipclean = 0;
93			bflag = argtoi('b', "number", optarg, 10);
94			printf("Alternate super block location: %d\n", bflag);
95			break;
96
97		case 'd':
98			debug++;
99			break;
100
101		case 'f':
102			skipclean = 0;
103			break;
104
105		case 'm':
106			lfmode = argtoi('m', "mode", optarg, 8);
107			if (lfmode &~ 07777)
108				errexit("bad mode to -m: %o\n", lfmode);
109			printf("** lost+found creation mode %o\n", lfmode);
110			break;
111
112		case 'n':
113			nflag++;
114			yflag = 0;
115			break;
116
117		case 'p':
118			preen++;
119			break;
120
121		case 'y':
122			yflag++;
123			nflag = 0;
124			break;
125
126		default:
127			usage();
128		}
129	}
130
131	argc -= optind;
132	argv += optind;
133
134	if (!argc)
135		usage();
136
137	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
138		(void)signal(SIGINT, catch);
139	if (preen)
140		(void)signal(SIGQUIT, catchquit);
141
142	while (argc-- > 0)
143		(void)checkfilesys(blockcheck(*argv++), 0, 0L, 0);
144
145	if (returntosingle)
146		ret = 2;
147
148	exit(ret);
149}
150
151static int
152argtoi(flag, req, str, base)
153	int flag;
154	char *req, *str;
155	int base;
156{
157	char *cp;
158	int ret;
159
160	ret = (int)strtol(str, &cp, base);
161	if (cp == str || *cp)
162		errexit("-%c flag requires a %s\n", flag, req);
163	return (ret);
164}
165
166/*
167 * Check the specified filesystem.
168 */
169/* ARGSUSED */
170static int
171checkfilesys(filesys, mntpt, auxdata, child)
172	const char *filesys;
173	char *mntpt;
174	long auxdata;
175	int child;
176{
177	daddr_t n_bfree;
178	struct dups *dp;
179	struct zlncnt *zlnp;
180	int i;
181
182	if (preen && child)
183		(void)signal(SIGQUIT, voidquit);
184	setcdevname(filesys, preen);
185	if (debug && preen)
186		pwarn("starting\n");
187	switch (setup(filesys)) {
188	case 0:
189		if (preen)
190			pfatal("CAN'T CHECK FILE SYSTEM.");
191	case -1:
192		return (0);
193	}
194	/*
195	 * 1: scan inodes tallying blocks used
196	 */
197	if (preen == 0) {
198		if (sblock.e2fs.e2fs_rev > E2FS_REV0) {
199			printf("** Last Mounted on %s\n",
200			    sblock.e2fs.e2fs_fsmnt);
201		}
202		if (hotroot())
203			printf("** Root file system\n");
204		printf("** Phase 1 - Check Blocks and Sizes\n");
205	}
206	pass1();
207
208	/*
209	 * 1b: locate first references to duplicates, if any
210	 */
211	if (duplist) {
212		if (preen)
213			pfatal("INTERNAL ERROR: dups with -p");
214		printf("** Phase 1b - Rescan For More DUPS\n");
215		pass1b();
216	}
217
218	/*
219	 * 2: traverse directories from root to mark all connected directories
220	 */
221	if (preen == 0)
222		printf("** Phase 2 - Check Pathnames\n");
223	pass2();
224
225	/*
226	 * 3: scan inodes looking for disconnected directories
227	 */
228	if (preen == 0)
229		printf("** Phase 3 - Check Connectivity\n");
230	pass3();
231
232	/*
233	 * 4: scan inodes looking for disconnected files; check reference counts
234	 */
235	if (preen == 0)
236		printf("** Phase 4 - Check Reference Counts\n");
237	pass4();
238
239	/*
240	 * 5: check and repair resource counts in cylinder groups
241	 */
242	if (preen == 0)
243		printf("** Phase 5 - Check Cyl groups\n");
244	pass5();
245
246	/*
247	 * print out summary statistics
248	 */
249	n_bfree = sblock.e2fs.e2fs_fbcount;
250
251	pwarn("%d files, %d used, %d free\n",
252	    n_files, n_blks, n_bfree);
253	if (debug &&
254		/* 9 reserved and unused inodes in FS */
255	    (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount))
256		printf("%d files missing\n", n_files);
257	if (debug) {
258		for (i = 0; i < sblock.e2fs_ncg; i++)
259			n_blks +=  cgoverhead(i);
260		n_blks += sblock.e2fs.e2fs_first_dblock;
261		if (n_blks -= maxfsblock - n_bfree)
262			printf("%d blocks missing\n", n_blks);
263		if (duplist != NULL) {
264			printf("The following duplicate blocks remain:");
265			for (dp = duplist; dp; dp = dp->next)
266				printf(" %d,", dp->dup);
267			printf("\n");
268		}
269		if (zlnhead != NULL) {
270			printf("The following zero link count inodes remain:");
271			for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
272				printf(" %u,", zlnp->zlncnt);
273			printf("\n");
274		}
275	}
276	zlnhead = (struct zlncnt *)0;
277	duplist = (struct dups *)0;
278	muldup = (struct dups *)0;
279	inocleanup();
280	if (fsmodified) {
281		time_t t;
282		(void)time(&t);
283		sblock.e2fs.e2fs_wtime = t;
284		sblock.e2fs.e2fs_lastfsck = t;
285		sbdirty();
286	}
287	ckfini(1);
288	free(blockmap);
289	free(statemap);
290	free((char *)lncntp);
291	if (!fsmodified)
292		return (0);
293	if (!preen)
294		printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
295	if (rerun)
296		printf("\n***** PLEASE RERUN FSCK *****\n");
297	if (hotroot()) {
298		struct statfs stfs_buf;
299		/*
300		 * We modified the root.  Do a mount update on
301		 * it, unless it is read-write, so we can continue.
302		 */
303		if (statfs("/", &stfs_buf) == 0) {
304			long flags = stfs_buf.f_flags;
305			struct ufs_args args;
306			int ret;
307
308			if (flags & MNT_RDONLY) {
309				args.fspec = 0;
310				args.export.ex_flags = 0;
311				args.export.ex_root = 0;
312				flags |= MNT_UPDATE | MNT_RELOAD;
313				ret = mount(MOUNT_EXT2FS, "/", flags, &args);
314				if (ret == 0)
315					return(0);
316			}
317		}
318		if (!preen)
319			printf("\n***** REBOOT NOW *****\n");
320		sync();
321		return (4);
322	}
323	return (0);
324}
325
326static void
327usage()
328{
329	(void) fprintf(stderr,
330	    "Usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n",
331	    __progname);
332	exit(1);
333}
334
335