main.c revision 1.10 
1/*	$NetBSD: main.c,v 1.10 2001/02/19 22:56:19 cgd 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 1.10 2001/02/19 22:56:19 cgd 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
77int
78main(argc, argv)
79	int	argc;
80	char	*argv[];
81{
82	int ch;
83	int ret = 0;
84
85	sync();
86	skipclean = 1;
87	while ((ch = getopt(argc, argv, "b:c:dfm:npy")) != -1) {
88		switch (ch) {
89		case 'b':
90			skipclean = 0;
91			bflag = argtoi('b', "number", optarg, 10);
92			printf("Alternate super block location: %d\n", bflag);
93			break;
94
95		case 'd':
96			debug++;
97			break;
98
99		case 'f':
100			skipclean = 0;
101			break;
102
103		case 'm':
104			lfmode = argtoi('m', "mode", optarg, 8);
105			if (lfmode &~ 07777)
106				errexit("bad mode to -m: %o\n", lfmode);
107			printf("** lost+found creation mode %o\n", lfmode);
108			break;
109
110		case 'n':
111			nflag++;
112			yflag = 0;
113			break;
114
115		case 'p':
116			preen++;
117			break;
118
119		case 'y':
120			yflag++;
121			nflag = 0;
122			break;
123
124		default:
125			usage();
126		}
127	}
128
129	argc -= optind;
130	argv += optind;
131
132	if (!argc)
133		usage();
134
135	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
136		(void)signal(SIGINT, catch);
137	if (preen)
138		(void)signal(SIGQUIT, catchquit);
139
140	while (argc-- > 0)
141		(void)checkfilesys(blockcheck(*argv++), 0, 0L, 0);
142
143	if (returntosingle)
144		ret = 2;
145
146	exit(ret);
147}
148
149static int
150argtoi(flag, req, str, base)
151	int flag;
152	char *req, *str;
153	int base;
154{
155	char *cp;
156	int ret;
157
158	ret = (int)strtol(str, &cp, base);
159	if (cp == str || *cp)
160		errexit("-%c flag requires a %s\n", flag, req);
161	return (ret);
162}
163
164/*
165 * Check the specified filesystem.
166 */
167/* ARGSUSED */
168static int
169checkfilesys(filesys, mntpt, auxdata, child)
170	const char *filesys;
171	char *mntpt;
172	long auxdata;
173	int child;
174{
175	daddr_t n_bfree;
176	struct dups *dp;
177	struct zlncnt *zlnp;
178	int i;
179
180	if (preen && child)
181		(void)signal(SIGQUIT, voidquit);
182	setcdevname(filesys, preen);
183	if (debug && preen)
184		pwarn("starting\n");
185	switch (setup(filesys)) {
186	case 0:
187		if (preen)
188			pfatal("CAN'T CHECK FILE SYSTEM.");
189	case -1:
190		return (0);
191	}
192	/*
193	 * 1: scan inodes tallying blocks used
194	 */
195	if (preen == 0) {
196		if (sblock.e2fs.e2fs_rev > E2FS_REV0) {
197			printf("** Last Mounted on %s\n",
198			    sblock.e2fs.e2fs_fsmnt);
199		}
200		if (hotroot())
201			printf("** Root file system\n");
202		printf("** Phase 1 - Check Blocks and Sizes\n");
203	}
204	pass1();
205
206	/*
207	 * 1b: locate first references to duplicates, if any
208	 */
209	if (duplist) {
210		if (preen)
211			pfatal("INTERNAL ERROR: dups with -p");
212		printf("** Phase 1b - Rescan For More DUPS\n");
213		pass1b();
214	}
215
216	/*
217	 * 2: traverse directories from root to mark all connected directories
218	 */
219	if (preen == 0)
220		printf("** Phase 2 - Check Pathnames\n");
221	pass2();
222
223	/*
224	 * 3: scan inodes looking for disconnected directories
225	 */
226	if (preen == 0)
227		printf("** Phase 3 - Check Connectivity\n");
228	pass3();
229
230	/*
231	 * 4: scan inodes looking for disconnected files; check reference counts
232	 */
233	if (preen == 0)
234		printf("** Phase 4 - Check Reference Counts\n");
235	pass4();
236
237	/*
238	 * 5: check and repair resource counts in cylinder groups
239	 */
240	if (preen == 0)
241		printf("** Phase 5 - Check Cyl groups\n");
242	pass5();
243
244	/*
245	 * print out summary statistics
246	 */
247	n_bfree = sblock.e2fs.e2fs_fbcount;
248
249	pwarn("%d files, %d used, %d free\n",
250	    n_files, n_blks, n_bfree);
251	if (debug &&
252		/* 9 reserved and unused inodes in FS */
253	    (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount))
254		printf("%d files missing\n", n_files);
255	if (debug) {
256		for (i = 0; i < sblock.e2fs_ncg; i++)
257			n_blks +=  cgoverhead(i);
258		n_blks += sblock.e2fs.e2fs_first_dblock;
259		if (n_blks -= maxfsblock - n_bfree)
260			printf("%d blocks missing\n", n_blks);
261		if (duplist != NULL) {
262			printf("The following duplicate blocks remain:");
263			for (dp = duplist; dp; dp = dp->next)
264				printf(" %d,", dp->dup);
265			printf("\n");
266		}
267		if (zlnhead != NULL) {
268			printf("The following zero link count inodes remain:");
269			for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
270				printf(" %u,", zlnp->zlncnt);
271			printf("\n");
272		}
273	}
274	zlnhead = (struct zlncnt *)0;
275	duplist = (struct dups *)0;
276	muldup = (struct dups *)0;
277	inocleanup();
278	if (fsmodified) {
279		time_t t;
280		(void)time(&t);
281		sblock.e2fs.e2fs_wtime = t;
282		sblock.e2fs.e2fs_lastfsck = t;
283		sbdirty();
284	}
285	ckfini(1);
286	free(blockmap);
287	free(statemap);
288	free((char *)lncntp);
289	if (!fsmodified)
290		return (0);
291	if (!preen)
292		printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
293	if (rerun)
294		printf("\n***** PLEASE RERUN FSCK *****\n");
295	if (hotroot()) {
296		struct statfs stfs_buf;
297		/*
298		 * We modified the root.  Do a mount update on
299		 * it, unless it is read-write, so we can continue.
300		 */
301		if (statfs("/", &stfs_buf) == 0) {
302			long flags = stfs_buf.f_flags;
303			struct ufs_args args;
304			int ret;
305
306			if (flags & MNT_RDONLY) {
307				args.fspec = 0;
308				args.export.ex_flags = 0;
309				args.export.ex_root = 0;
310				flags |= MNT_UPDATE | MNT_RELOAD;
311				ret = mount(MOUNT_EXT2FS, "/", flags, &args);
312				if (ret == 0)
313					return(0);
314			}
315		}
316		if (!preen)
317			printf("\n***** REBOOT NOW *****\n");
318		sync();
319		return (4);
320	}
321	return (0);
322}
323
324static void
325usage()
326{
327
328	(void) fprintf(stderr,
329	    "Usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n",
330	    getprogname());
331	exit(1);
332}
333
334