main.c revision 1.30 
1/*	$NetBSD: main.c,v 1.30 1998/03/01 02:20:37 fvdl 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 1.30 1998/03/01 02:20:37 fvdl 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
59#include <ctype.h>
60#include <err.h>
61#include <fstab.h>
62#include <string.h>
63#include <ctype.h>
64#include <stdio.h>
65#include <stdlib.h>
66#include <unistd.h>
67
68#include "fsck.h"
69#include "extern.h"
70#include "fsutil.h"
71
72int	returntosingle;
73
74int	main __P((int, char *[]));
75
76static int	argtoi __P((int, char *, char *, int));
77static int	checkfilesys __P((char *, char *, long, int));
78static  void usage __P((void));
79
80
81int
82main(argc, argv)
83	int	argc;
84	char	*argv[];
85{
86	struct rlimit r;
87	int ch;
88	int ret = 0;
89
90	if (getrlimit(RLIMIT_DATA, &r) == 0) {
91		r.rlim_cur = r.rlim_max;
92		(void) setrlimit(RLIMIT_DATA, &r);
93	}
94	sync();
95	skipclean = 1;
96	while ((ch = getopt(argc, argv, "b:c:dfm:npy")) != -1) {
97		switch (ch) {
98		case 'b':
99			skipclean = 0;
100			bflag = argtoi('b', "number", optarg, 10);
101			printf("Alternate super block location: %d\n", bflag);
102			break;
103
104		case 'c':
105			skipclean = 0;
106			cvtlevel = argtoi('c', "conversion level", optarg, 10);
107			break;
108
109		case 'd':
110			debug++;
111			break;
112
113		case 'f':
114			skipclean = 0;
115			break;
116
117		case 'm':
118			lfmode = argtoi('m', "mode", optarg, 8);
119			if (lfmode &~ 07777)
120				errx(EEXIT, "bad mode to -m: %o", lfmode);
121			printf("** lost+found creation mode %o\n", lfmode);
122			break;
123
124		case 'n':
125			nflag++;
126			yflag = 0;
127			break;
128
129		case 'p':
130			preen++;
131			break;
132
133		case 'y':
134			yflag++;
135			nflag = 0;
136			break;
137
138		default:
139			usage();
140		}
141	}
142
143	argc -= optind;
144	argv += optind;
145
146	if (!argc)
147		usage();
148
149	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
150		(void)signal(SIGINT, catch);
151	if (preen)
152		(void)signal(SIGQUIT, catchquit);
153
154	while (argc-- > 0)
155		(void)checkfilesys(blockcheck(*argv++), 0, 0L, 0);
156
157	if (returntosingle)
158		ret = 2;
159
160	exit(ret);
161}
162
163static int
164argtoi(flag, req, str, base)
165	int flag;
166	char *req, *str;
167	int base;
168{
169	char *cp;
170	int ret;
171
172	ret = (int)strtol(str, &cp, base);
173	if (cp == str || *cp)
174		errx(EEXIT, "-%c flag requires a %s", flag, req);
175	return (ret);
176}
177
178/*
179 * Check the specified filesystem.
180 */
181/* ARGSUSED */
182static int
183checkfilesys(filesys, mntpt, auxdata, child)
184	char *filesys, *mntpt;
185	long auxdata;
186	int child;
187{
188	ufs_daddr_t n_ffree, n_bfree;
189	struct dups *dp;
190	struct zlncnt *zlnp;
191#ifdef LITE2BORKEN
192	int cylno, flags;
193#else
194	int cylno;
195#endif
196
197	if (preen && child)
198		(void)signal(SIGQUIT, voidquit);
199	setcdevname(filesys, preen);
200	if (debug && preen)
201		pwarn("starting\n");
202	switch (setup(filesys)) {
203	case 0:
204		if (preen)
205			pfatal("CAN'T CHECK FILE SYSTEM.");
206		/* fall through */
207	case -1:
208		return (0);
209	}
210	/*
211	 * 1: scan inodes tallying blocks used
212	 */
213	if (preen == 0) {
214		printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
215		if (hotroot())
216			printf("** Root file system\n");
217		printf("** Phase 1 - Check Blocks and Sizes\n");
218	}
219	pass1();
220
221	/*
222	 * 1b: locate first references to duplicates, if any
223	 */
224	if (duplist) {
225		if (preen)
226			pfatal("INTERNAL ERROR: dups with -p");
227		printf("** Phase 1b - Rescan For More DUPS\n");
228		pass1b();
229	}
230
231	/*
232	 * 2: traverse directories from root to mark all connected directories
233	 */
234	if (preen == 0)
235		printf("** Phase 2 - Check Pathnames\n");
236	pass2();
237
238	/*
239	 * 3: scan inodes looking for disconnected directories
240	 */
241	if (preen == 0)
242		printf("** Phase 3 - Check Connectivity\n");
243	pass3();
244
245	/*
246	 * 4: scan inodes looking for disconnected files; check reference counts
247	 */
248	if (preen == 0)
249		printf("** Phase 4 - Check Reference Counts\n");
250	pass4();
251
252	/*
253	 * 5: check and repair resource counts in cylinder groups
254	 */
255	if (preen == 0)
256		printf("** Phase 5 - Check Cyl groups\n");
257	pass5();
258
259	/*
260	 * print out summary statistics
261	 */
262	n_ffree = sblock.fs_cstotal.cs_nffree;
263	n_bfree = sblock.fs_cstotal.cs_nbfree;
264	pwarn("%d files, %d used, %d free ",
265	    n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree);
266	printf("(%d frags, %d blocks, %d.%d%% fragmentation)\n",
267	    n_ffree, n_bfree, (n_ffree * 100) / sblock.fs_dsize,
268	    ((n_ffree * 1000 + sblock.fs_dsize / 2) / sblock.fs_dsize) % 10);
269	if (debug &&
270	    (n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree))
271		printf("%d files missing\n", n_files);
272	if (debug) {
273		n_blks += sblock.fs_ncg *
274			(cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
275		n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
276		n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
277		if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree))
278			printf("%d blocks missing\n", n_blks);
279		if (duplist != NULL) {
280			printf("The following duplicate blocks remain:");
281			for (dp = duplist; dp; dp = dp->next)
282				printf(" %d,", dp->dup);
283			printf("\n");
284		}
285		if (zlnhead != NULL) {
286			printf("The following zero link count inodes remain:");
287			for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
288				printf(" %u,", zlnp->zlncnt);
289			printf("\n");
290		}
291	}
292	zlnhead = (struct zlncnt *)0;
293	duplist = (struct dups *)0;
294	muldup = (struct dups *)0;
295	inocleanup();
296	if (fsmodified) {
297		(void)time(&sblock.fs_time);
298		sbdirty();
299	}
300	if (cvtlevel && sblk.b_dirty) {
301		/*
302		 * Write out the duplicate super blocks
303		 */
304		for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
305			bwrite(fswritefd, (char *)&sblock,
306			    fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE);
307	}
308#if LITE2BORKEN
309	if (!hotroot()) {
310		ckfini(1);
311	} else {
312		struct statfs stfs_buf;
313		/*
314		 * Check to see if root is mounted read-write.
315		 */
316		if (statfs("/", &stfs_buf) == 0)
317			flags = stfs_buf.f_flags;
318		else
319			flags = 0;
320		ckfini(flags & MNT_RDONLY);
321	}
322#else
323	ckfini(1);
324#endif
325	free(blockmap);
326	free(statemap);
327	free((char *)lncntp);
328	if (!fsmodified)
329		return (0);
330	if (!preen)
331		printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
332	if (rerun)
333		printf("\n***** PLEASE RERUN FSCK *****\n");
334	if (hotroot()) {
335		struct statfs stfs_buf;
336		/*
337		 * We modified the root.  Do a mount update on
338		 * it, unless it is read-write, so we can continue.
339		 */
340		if (statfs("/", &stfs_buf) == 0) {
341			long flags = stfs_buf.f_flags;
342			struct ufs_args args;
343			int ret;
344
345			if (flags & MNT_RDONLY) {
346				args.fspec = 0;
347				args.export.ex_flags = 0;
348				args.export.ex_root = 0;
349				flags |= MNT_UPDATE | MNT_RELOAD;
350				ret = mount(MOUNT_FFS, "/", flags, &args);
351				if (ret == 0)
352					return(0);
353			}
354		}
355		if (!preen)
356			printf("\n***** REBOOT NOW *****\n");
357		sync();
358		return (4);
359	}
360	return (0);
361}
362
363static void
364usage()
365{
366	extern char *__progname;
367
368	(void) fprintf(stderr,
369	    "Usage: %s [-dfnpy] [-b block] [-c level] [-m mode] filesystem ...\n",
370	    __progname);
371	exit(1);
372}
373
374