main.c revision 1.5 
1/*	$NetBSD: main.c,v 1.5 1998/04/01 15:24:12 kleink 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 1.5 1998/04/01 15:24:12 kleink 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((char *, char *, long, int));
75static  void usage __P((void));
76
77
78int
79main(argc, argv)
80	int	argc;
81	char	*argv[];
82{
83	int ch;
84	int ret = 0;
85
86	sync();
87	skipclean = 1;
88	while ((ch = getopt(argc, argv, "b:c:dfm:npy")) != -1) {
89		switch (ch) {
90		case 'b':
91			skipclean = 0;
92			bflag = argtoi('b', "number", optarg, 10);
93			printf("Alternate super block location: %d\n", bflag);
94			break;
95
96		case 'd':
97			debug++;
98			break;
99
100		case 'f':
101			skipclean = 0;
102			break;
103
104		case 'm':
105			lfmode = argtoi('m', "mode", optarg, 8);
106			if (lfmode &~ 07777)
107				errexit("bad mode to -m: %o\n", lfmode);
108			printf("** lost+found creation mode %o\n", lfmode);
109			break;
110
111		case 'n':
112			nflag++;
113			yflag = 0;
114			break;
115
116		case 'p':
117			preen++;
118			break;
119
120		case 'y':
121			yflag++;
122			nflag = 0;
123			break;
124
125		default:
126			usage();
127		}
128	}
129
130	argc -= optind;
131	argv += optind;
132
133	if (!argc)
134		usage();
135
136	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
137		(void)signal(SIGINT, catch);
138	if (preen)
139		(void)signal(SIGQUIT, catchquit);
140
141	while (argc-- > 0)
142		(void)checkfilesys(blockcheck(*argv++), 0, 0L, 0);
143
144	if (returntosingle)
145		ret = 2;
146
147	exit(ret);
148}
149
150static int
151argtoi(flag, req, str, base)
152	int flag;
153	char *req, *str;
154	int base;
155{
156	char *cp;
157	int ret;
158
159	ret = (int)strtol(str, &cp, base);
160	if (cp == str || *cp)
161		errexit("-%c flag requires a %s\n", flag, req);
162	return (ret);
163}
164
165/*
166 * Check the specified filesystem.
167 */
168/* ARGSUSED */
169static int
170checkfilesys(filesys, mntpt, auxdata, child)
171	char *filesys, *mntpt;
172	long auxdata;
173	int child;
174{
175	daddr_t n_bfree;
176	struct dups *dp;
177	struct zlncnt *zlnp;
178
179	if (preen && child)
180		(void)signal(SIGQUIT, voidquit);
181	setcdevname(filesys, preen);
182	if (debug && preen)
183		pwarn("starting\n");
184	switch (setup(filesys)) {
185	case 0:
186		if (preen)
187			pfatal("CAN'T CHECK FILE SYSTEM.");
188	case -1:
189		return (0);
190	}
191	/*
192	 * 1: scan inodes tallying blocks used
193	 */
194	if (preen == 0) {
195		if (hotroot())
196			printf("** Root file system\n");
197		printf("** Phase 1 - Check Blocks and Sizes\n");
198	}
199	pass1();
200
201	/*
202	 * 1b: locate first references to duplicates, if any
203	 */
204	if (duplist) {
205		if (preen)
206			pfatal("INTERNAL ERROR: dups with -p");
207		printf("** Phase 1b - Rescan For More DUPS\n");
208		pass1b();
209	}
210
211	/*
212	 * 2: traverse directories from root to mark all connected directories
213	 */
214	if (preen == 0)
215		printf("** Phase 2 - Check Pathnames\n");
216	pass2();
217
218	/*
219	 * 3: scan inodes looking for disconnected directories
220	 */
221	if (preen == 0)
222		printf("** Phase 3 - Check Connectivity\n");
223	pass3();
224
225	/*
226	 * 4: scan inodes looking for disconnected files; check reference counts
227	 */
228	if (preen == 0)
229		printf("** Phase 4 - Check Reference Counts\n");
230	pass4();
231
232	/*
233	 * 5: check and repair resource counts in cylinder groups
234	 */
235	if (preen == 0)
236		printf("** Phase 5 - Check Cyl groups\n");
237	pass5();
238
239	/*
240	 * print out summary statistics
241	 */
242	n_bfree = sblock.e2fs.e2fs_fbcount;
243
244	pwarn("%d files, %d used, %d free\n",
245	    n_files, n_blks, n_bfree);
246	if (debug &&
247		/* 9 reserved and unused inodes in FS */
248	    (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount))
249		printf("%d files missing\n", n_files);
250	if (debug) {
251		n_blks += sblock.e2fs_ncg * cgoverhead;
252		n_blks += sblock.e2fs.e2fs_first_dblock;
253		if (n_blks -= maxfsblock - n_bfree)
254			printf("%d blocks missing\n", n_blks);
255		if (duplist != NULL) {
256			printf("The following duplicate blocks remain:");
257			for (dp = duplist; dp; dp = dp->next)
258				printf(" %d,", dp->dup);
259			printf("\n");
260		}
261		if (zlnhead != NULL) {
262			printf("The following zero link count inodes remain:");
263			for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
264				printf(" %u,", zlnp->zlncnt);
265			printf("\n");
266		}
267	}
268	zlnhead = (struct zlncnt *)0;
269	duplist = (struct dups *)0;
270	muldup = (struct dups *)0;
271	inocleanup();
272	if (fsmodified) {
273		time_t t;
274		(void)time(&t);
275		sblock.e2fs.e2fs_wtime = t;
276		sblock.e2fs.e2fs_lastfsck = t;
277		sbdirty();
278	}
279	ckfini(1);
280	free(blockmap);
281	free(statemap);
282	free((char *)lncntp);
283	if (!fsmodified)
284		return (0);
285	if (!preen)
286		printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
287	if (rerun)
288		printf("\n***** PLEASE RERUN FSCK *****\n");
289	if (hotroot()) {
290		struct statfs stfs_buf;
291		/*
292		 * We modified the root.  Do a mount update on
293		 * it, unless it is read-write, so we can continue.
294		 */
295		if (statfs("/", &stfs_buf) == 0) {
296			long flags = stfs_buf.f_flags;
297			struct ufs_args args;
298			int ret;
299
300			if (flags & MNT_RDONLY) {
301				args.fspec = 0;
302				args.export.ex_flags = 0;
303				args.export.ex_root = 0;
304				flags |= MNT_UPDATE | MNT_RELOAD;
305				ret = mount(MOUNT_EXT2FS, "/", flags, &args);
306				if (ret == 0)
307					return(0);
308			}
309		}
310		if (!preen)
311			printf("\n***** REBOOT NOW *****\n");
312		sync();
313		return (4);
314	}
315	return (0);
316}
317
318static void
319usage()
320{
321	extern char *__progname;
322
323	(void) fprintf(stderr,
324	    "Usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n",
325	    __progname);
326	exit(1);
327}
328
329