main.c revision 1.32 
1/*	$NetBSD: main.c,v 1.32 1998/04/01 15:55:43 kleink Exp $	*/
2
3/*
4 * Copyright (c) 1980, 1986, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by the University of
18 *	California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#include <sys/cdefs.h>
37#ifndef lint
38__COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1993\n\
39	The Regents of the University of California.  All rights reserved.\n");
40#endif /* not lint */
41
42#ifndef lint
43#if 0
44static char sccsid[] = "@(#)main.c	8.6 (Berkeley) 5/14/95";
45#else
46__RCSID("$NetBSD: main.c,v 1.32 1998/04/01 15:55:43 kleink Exp $");
47#endif
48#endif /* not lint */
49
50#include <sys/param.h>
51#include <sys/time.h>
52#include <sys/mount.h>
53#include <sys/resource.h>
54
55#include <ufs/ufs/dinode.h>
56#include <ufs/ufs/ufsmount.h>
57#include <ufs/ffs/fs.h>
58#include <ufs/ffs/ffs_extern.h>
59
60#include <ctype.h>
61#include <err.h>
62#include <fstab.h>
63#include <string.h>
64#include <time.h>
65#include <ctype.h>
66#include <stdio.h>
67#include <stdlib.h>
68#include <unistd.h>
69
70#include "fsck.h"
71#include "extern.h"
72#include "fsutil.h"
73
74int	returntosingle;
75
76int	main __P((int, char *[]));
77
78static int	argtoi __P((int, char *, char *, int));
79static int	checkfilesys __P((char *, char *, long, int));
80static  void usage __P((void));
81
82
83int
84main(argc, argv)
85	int	argc;
86	char	*argv[];
87{
88	struct rlimit r;
89	int ch;
90	int ret = 0;
91
92	if (getrlimit(RLIMIT_DATA, &r) == 0) {
93		r.rlim_cur = r.rlim_max;
94		(void) setrlimit(RLIMIT_DATA, &r);
95	}
96	sync();
97	skipclean = 1;
98	markclean = 1;
99	endian = 0;
100	while ((ch = getopt(argc, argv, "B:b:c:dfm:npy")) != -1) {
101		switch (ch) {
102		case 'B':
103			if (strcmp(optarg, "be") == 0)
104				endian = BIG_ENDIAN;
105			else if (strcmp(optarg, "le") == 0)
106				endian = LITTLE_ENDIAN;
107			else usage();
108			break;
109
110		case 'b':
111			skipclean = 0;
112			bflag = argtoi('b', "number", optarg, 10);
113			printf("Alternate super block location: %d\n", bflag);
114			break;
115
116		case 'c':
117			skipclean = 0;
118			cvtlevel = argtoi('c', "conversion level", optarg, 10);
119			break;
120
121		case 'd':
122			debug++;
123			break;
124
125		case 'f':
126			skipclean = 0;
127			break;
128
129		case 'm':
130			lfmode = argtoi('m', "mode", optarg, 8);
131			if (lfmode &~ 07777)
132				errx(EEXIT, "bad mode to -m: %o", lfmode);
133			printf("** lost+found creation mode %o\n", lfmode);
134			break;
135
136		case 'n':
137			nflag++;
138			yflag = 0;
139			break;
140
141		case 'p':
142			preen++;
143			break;
144
145		case 'y':
146			yflag++;
147			nflag = 0;
148			break;
149
150		default:
151			usage();
152		}
153	}
154
155	argc -= optind;
156	argv += optind;
157
158	if (!argc)
159		usage();
160
161	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
162		(void)signal(SIGINT, catch);
163	if (preen)
164		(void)signal(SIGQUIT, catchquit);
165
166	while (argc-- > 0)
167		(void)checkfilesys(blockcheck(*argv++), 0, 0L, 0);
168
169	if (returntosingle)
170		ret = 2;
171
172	exit(ret);
173}
174
175static int
176argtoi(flag, req, str, base)
177	int flag;
178	char *req, *str;
179	int base;
180{
181	char *cp;
182	int ret;
183
184	ret = (int)strtol(str, &cp, base);
185	if (cp == str || *cp)
186		errx(EEXIT, "-%c flag requires a %s", flag, req);
187	return (ret);
188}
189
190/*
191 * Check the specified filesystem.
192 */
193/* ARGSUSED */
194static int
195checkfilesys(filesys, mntpt, auxdata, child)
196	char *filesys, *mntpt;
197	long auxdata;
198	int child;
199{
200	ufs_daddr_t n_ffree, n_bfree;
201	struct dups *dp;
202	struct zlncnt *zlnp;
203#ifdef LITE2BORKEN
204	int cylno, flags;
205#else
206	int cylno;
207#endif
208
209	if (preen && child)
210		(void)signal(SIGQUIT, voidquit);
211	setcdevname(filesys, preen);
212	if (debug && preen)
213		pwarn("starting\n");
214	switch (setup(filesys)) {
215	case 0:
216		if (preen)
217			pfatal("CAN'T CHECK FILE SYSTEM.");
218		/* fall through */
219	case -1:
220		return (0);
221	}
222	/*
223	 * 1: scan inodes tallying blocks used
224	 */
225	if (preen == 0) {
226		printf("** Last Mounted on %s\n", sblock->fs_fsmnt);
227		if (hotroot())
228			printf("** Root file system\n");
229		printf("** Phase 1 - Check Blocks and Sizes\n");
230	}
231	pass1();
232
233	/*
234	 * 1b: locate first references to duplicates, if any
235	 */
236	if (duplist) {
237		if (preen)
238			pfatal("INTERNAL ERROR: dups with -p");
239		printf("** Phase 1b - Rescan For More DUPS\n");
240		pass1b();
241	}
242
243	/*
244	 * 2: traverse directories from root to mark all connected directories
245	 */
246	if (preen == 0)
247		printf("** Phase 2 - Check Pathnames\n");
248	pass2();
249
250	/*
251	 * 3: scan inodes looking for disconnected directories
252	 */
253	if (preen == 0)
254		printf("** Phase 3 - Check Connectivity\n");
255	pass3();
256
257	/*
258	 * 4: scan inodes looking for disconnected files; check reference counts
259	 */
260	if (preen == 0)
261		printf("** Phase 4 - Check Reference Counts\n");
262	pass4();
263
264	/*
265	 * 5: check and repair resource counts in cylinder groups
266	 */
267	if (preen == 0)
268		printf("** Phase 5 - Check Cyl groups\n");
269	pass5();
270
271	/*
272	 * print out summary statistics
273	 */
274	n_ffree = sblock->fs_cstotal.cs_nffree;
275	n_bfree = sblock->fs_cstotal.cs_nbfree;
276	pwarn("%d files, %d used, %d free ",
277	    n_files, n_blks, n_ffree + sblock->fs_frag * n_bfree);
278	printf("(%d frags, %d blocks, %d.%d%% fragmentation)\n",
279	    n_ffree, n_bfree, (n_ffree * 100) / sblock->fs_dsize,
280	    ((n_ffree * 1000 + sblock->fs_dsize / 2) / sblock->fs_dsize) % 10);
281	if (debug &&
282	    (n_files -= maxino - ROOTINO - sblock->fs_cstotal.cs_nifree))
283		printf("%d files missing\n", n_files);
284	if (debug) {
285		n_blks += sblock->fs_ncg *
286			(cgdmin(sblock, 0) - cgsblock(sblock, 0));
287		n_blks += cgsblock(sblock, 0) - cgbase(sblock, 0);
288		n_blks += howmany(sblock->fs_cssize, sblock->fs_fsize);
289		if (n_blks -= maxfsblock - (n_ffree + sblock->fs_frag * n_bfree))
290			printf("%d blocks missing\n", n_blks);
291		if (duplist != NULL) {
292			printf("The following duplicate blocks remain:");
293			for (dp = duplist; dp; dp = dp->next)
294				printf(" %d,", dp->dup);
295			printf("\n");
296		}
297		if (zlnhead != NULL) {
298			printf("The following zero link count inodes remain:");
299			for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
300				printf(" %u,", zlnp->zlncnt);
301			printf("\n");
302		}
303	}
304	zlnhead = (struct zlncnt *)0;
305	duplist = (struct dups *)0;
306	muldup = (struct dups *)0;
307	inocleanup();
308	if (fsmodified) {
309		(void)time(&sblock->fs_time);
310		sbdirty();
311	}
312	if ((cvtlevel && sblk.b_dirty) || doswap) {
313		/*
314		 * Write out the duplicate super blocks
315		 */
316		for (cylno = 0; cylno < sblock->fs_ncg; cylno++)
317			bwrite(fswritefd, sblk.b_un.b_buf,
318			    fsbtodb(sblock, cgsblock(sblock, cylno)), SBSIZE);
319	}
320#if LITE2BORKEN
321	if (!hotroot()) {
322		ckfini();
323	} else {
324		struct statfs stfs_buf;
325		/*
326		 * Check to see if root is mounted read-write.
327		 */
328		if (statfs("/", &stfs_buf) == 0)
329			flags = stfs_buf.f_flags;
330		else
331			flags = 0;
332		if (markclean)
333			markclean = flags & MNT_RDONLY;
334		ckfini();
335	}
336#else
337	ckfini();
338#endif
339	free(blockmap);
340	free(statemap);
341	free((char *)lncntp);
342	if (!fsmodified)
343		return (0);
344	if (!preen)
345		printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
346	if (rerun)
347		printf("\n***** PLEASE RERUN FSCK *****\n");
348	if (hotroot()) {
349		struct statfs stfs_buf;
350		/*
351		 * We modified the root.  Do a mount update on
352		 * it, unless it is read-write, so we can continue.
353		 */
354		if (statfs("/", &stfs_buf) == 0) {
355			long flags = stfs_buf.f_flags;
356			struct ufs_args args;
357			int ret;
358
359			if (flags & MNT_RDONLY) {
360				args.fspec = 0;
361				args.export.ex_flags = 0;
362				args.export.ex_root = 0;
363				flags |= MNT_UPDATE | MNT_RELOAD;
364				ret = mount(MOUNT_FFS, "/", flags, &args);
365				if (ret == 0)
366					return(0);
367			}
368		}
369		if (!preen)
370			printf("\n***** REBOOT NOW *****\n");
371		sync();
372		return (4);
373	}
374	return (0);
375}
376
377static void
378usage()
379{
380	extern char *__progname;
381
382	(void) fprintf(stderr,
383	    "Usage: %s [-dfnpy] [-B be|le] [-b block] [-c level] [-m mode]"
384			"filesystem ...\n",
385	    __progname);
386	exit(1);
387}
388
389