main.c revision 1.4 
1/*	$NetBSD: main.c,v 1.4 1998/03/01 02:20:25 fvdl 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 1.4 1998/03/01 02:20:25 fvdl 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 <unistd.h>
63
64#include "fsck.h"
65#include "extern.h"
66#include "fsutil.h"
67
68int	returntosingle;
69
70int	main __P((int, char *[]));
71
72static int	argtoi __P((int, char *, char *, int));
73static int	checkfilesys __P((char *, char *, long, int));
74static  void usage __P((void));
75
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	char *filesys, *mntpt;
171	long auxdata;
172	int child;
173{
174	daddr_t n_bfree;
175	struct dups *dp;
176	struct zlncnt *zlnp;
177
178	if (preen && child)
179		(void)signal(SIGQUIT, voidquit);
180	setcdevname(filesys, preen);
181	if (debug && preen)
182		pwarn("starting\n");
183	switch (setup(filesys)) {
184	case 0:
185		if (preen)
186			pfatal("CAN'T CHECK FILE SYSTEM.");
187	case -1:
188		return (0);
189	}
190	/*
191	 * 1: scan inodes tallying blocks used
192	 */
193	if (preen == 0) {
194		if (hotroot())
195			printf("** Root file system\n");
196		printf("** Phase 1 - Check Blocks and Sizes\n");
197	}
198	pass1();
199
200	/*
201	 * 1b: locate first references to duplicates, if any
202	 */
203	if (duplist) {
204		if (preen)
205			pfatal("INTERNAL ERROR: dups with -p");
206		printf("** Phase 1b - Rescan For More DUPS\n");
207		pass1b();
208	}
209
210	/*
211	 * 2: traverse directories from root to mark all connected directories
212	 */
213	if (preen == 0)
214		printf("** Phase 2 - Check Pathnames\n");
215	pass2();
216
217	/*
218	 * 3: scan inodes looking for disconnected directories
219	 */
220	if (preen == 0)
221		printf("** Phase 3 - Check Connectivity\n");
222	pass3();
223
224	/*
225	 * 4: scan inodes looking for disconnected files; check reference counts
226	 */
227	if (preen == 0)
228		printf("** Phase 4 - Check Reference Counts\n");
229	pass4();
230
231	/*
232	 * 5: check and repair resource counts in cylinder groups
233	 */
234	if (preen == 0)
235		printf("** Phase 5 - Check Cyl groups\n");
236	pass5();
237
238	/*
239	 * print out summary statistics
240	 */
241	n_bfree = sblock.e2fs.e2fs_fbcount;
242
243	pwarn("%d files, %d used, %d free\n",
244	    n_files, n_blks, n_bfree);
245	if (debug &&
246		/* 9 reserved and unused inodes in FS */
247	    (n_files -= maxino - 9 - sblock.e2fs.e2fs_ficount))
248		printf("%d files missing\n", n_files);
249	if (debug) {
250		n_blks += sblock.e2fs_ncg * cgoverhead;
251		n_blks += sblock.e2fs.e2fs_first_dblock;
252		if (n_blks -= maxfsblock - n_bfree)
253			printf("%d blocks missing\n", n_blks);
254		if (duplist != NULL) {
255			printf("The following duplicate blocks remain:");
256			for (dp = duplist; dp; dp = dp->next)
257				printf(" %d,", dp->dup);
258			printf("\n");
259		}
260		if (zlnhead != NULL) {
261			printf("The following zero link count inodes remain:");
262			for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
263				printf(" %u,", zlnp->zlncnt);
264			printf("\n");
265		}
266	}
267	zlnhead = (struct zlncnt *)0;
268	duplist = (struct dups *)0;
269	muldup = (struct dups *)0;
270	inocleanup();
271	if (fsmodified) {
272		time_t t;
273		(void)time(&t);
274		sblock.e2fs.e2fs_wtime = t;
275		sblock.e2fs.e2fs_lastfsck = t;
276		sbdirty();
277	}
278	ckfini(1);
279	free(blockmap);
280	free(statemap);
281	free((char *)lncntp);
282	if (!fsmodified)
283		return (0);
284	if (!preen)
285		printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
286	if (rerun)
287		printf("\n***** PLEASE RERUN FSCK *****\n");
288	if (hotroot()) {
289		struct statfs stfs_buf;
290		/*
291		 * We modified the root.  Do a mount update on
292		 * it, unless it is read-write, so we can continue.
293		 */
294		if (statfs("/", &stfs_buf) == 0) {
295			long flags = stfs_buf.f_flags;
296			struct ufs_args args;
297			int ret;
298
299			if (flags & MNT_RDONLY) {
300				args.fspec = 0;
301				args.export.ex_flags = 0;
302				args.export.ex_root = 0;
303				flags |= MNT_UPDATE | MNT_RELOAD;
304				ret = mount(MOUNT_EXT2FS, "/", flags, &args);
305				if (ret == 0)
306					return(0);
307			}
308		}
309		if (!preen)
310			printf("\n***** REBOOT NOW *****\n");
311		sync();
312		return (4);
313	}
314	return (0);
315}
316
317static void
318usage()
319{
320	extern char *__progname;
321
322	(void) fprintf(stderr,
323	    "Usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n",
324	    __progname);
325	exit(1);
326}
327
328