main.c revision 1.8 
1/*	$NetBSD: main.c,v 1.8 2000/01/28 16:01:46 bouyer 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 1.8 2000/01/28 16:01:46 bouyer 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
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	const char *filesys;
172	char *mntpt;
173	long auxdata;
174	int child;
175{
176	daddr_t n_bfree;
177	struct dups *dp;
178	struct zlncnt *zlnp;
179	int i;
180
181	if (preen && child)
182		(void)signal(SIGQUIT, voidquit);
183	setcdevname(filesys, preen);
184	if (debug && preen)
185		pwarn("starting\n");
186	switch (setup(filesys)) {
187	case 0:
188		if (preen)
189			pfatal("CAN'T CHECK FILE SYSTEM.");
190	case -1:
191		return (0);
192	}
193	/*
194	 * 1: scan inodes tallying blocks used
195	 */
196	if (preen == 0) {
197		if (sblock.e2fs.e2fs_rev > E2FS_REV0) {
198			printf("** Last Mounted on %s\n",
199			    sblock.e2fs.e2fs_fsmnt);
200		}
201		if (hotroot())
202			printf("** Root file system\n");
203		printf("** Phase 1 - Check Blocks and Sizes\n");
204	}
205	pass1();
206
207	/*
208	 * 1b: locate first references to duplicates, if any
209	 */
210	if (duplist) {
211		if (preen)
212			pfatal("INTERNAL ERROR: dups with -p");
213		printf("** Phase 1b - Rescan For More DUPS\n");
214		pass1b();
215	}
216
217	/*
218	 * 2: traverse directories from root to mark all connected directories
219	 */
220	if (preen == 0)
221		printf("** Phase 2 - Check Pathnames\n");
222	pass2();
223
224	/*
225	 * 3: scan inodes looking for disconnected directories
226	 */
227	if (preen == 0)
228		printf("** Phase 3 - Check Connectivity\n");
229	pass3();
230
231	/*
232	 * 4: scan inodes looking for disconnected files; check reference counts
233	 */
234	if (preen == 0)
235		printf("** Phase 4 - Check Reference Counts\n");
236	pass4();
237
238	/*
239	 * 5: check and repair resource counts in cylinder groups
240	 */
241	if (preen == 0)
242		printf("** Phase 5 - Check Cyl groups\n");
243	pass5();
244
245	/*
246	 * print out summary statistics
247	 */
248	n_bfree = sblock.e2fs.e2fs_fbcount;
249
250	pwarn("%d files, %d used, %d free\n",
251	    n_files, n_blks, n_bfree);
252	if (debug &&
253		/* 9 reserved and unused inodes in FS */
254	    (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount))
255		printf("%d files missing\n", n_files);
256	if (debug) {
257		for (i = 0; i < sblock.e2fs_ncg; i++)
258			n_blks +=  cgoverhead(i);
259		n_blks += sblock.e2fs.e2fs_first_dblock;
260		if (n_blks -= maxfsblock - n_bfree)
261			printf("%d blocks missing\n", n_blks);
262		if (duplist != NULL) {
263			printf("The following duplicate blocks remain:");
264			for (dp = duplist; dp; dp = dp->next)
265				printf(" %d,", dp->dup);
266			printf("\n");
267		}
268		if (zlnhead != NULL) {
269			printf("The following zero link count inodes remain:");
270			for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
271				printf(" %u,", zlnp->zlncnt);
272			printf("\n");
273		}
274	}
275	zlnhead = (struct zlncnt *)0;
276	duplist = (struct dups *)0;
277	muldup = (struct dups *)0;
278	inocleanup();
279	if (fsmodified) {
280		time_t t;
281		(void)time(&t);
282		sblock.e2fs.e2fs_wtime = t;
283		sblock.e2fs.e2fs_lastfsck = t;
284		sbdirty();
285	}
286	ckfini(1);
287	free(blockmap);
288	free(statemap);
289	free((char *)lncntp);
290	if (!fsmodified)
291		return (0);
292	if (!preen)
293		printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
294	if (rerun)
295		printf("\n***** PLEASE RERUN FSCK *****\n");
296	if (hotroot()) {
297		struct statfs stfs_buf;
298		/*
299		 * We modified the root.  Do a mount update on
300		 * it, unless it is read-write, so we can continue.
301		 */
302		if (statfs("/", &stfs_buf) == 0) {
303			long flags = stfs_buf.f_flags;
304			struct ufs_args args;
305			int ret;
306
307			if (flags & MNT_RDONLY) {
308				args.fspec = 0;
309				args.export.ex_flags = 0;
310				args.export.ex_root = 0;
311				flags |= MNT_UPDATE | MNT_RELOAD;
312				ret = mount(MOUNT_EXT2FS, "/", flags, &args);
313				if (ret == 0)
314					return(0);
315			}
316		}
317		if (!preen)
318			printf("\n***** REBOOT NOW *****\n");
319		sync();
320		return (4);
321	}
322	return (0);
323}
324
325static void
326usage()
327{
328	extern char *__progname;
329
330	(void) fprintf(stderr,
331	    "Usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n",
332	    __progname);
333	exit(1);
334}
335
336