main.c revision 1.19 
1/*	$NetBSD: main.c,v 1.19 1995/11/28 05:25:28 jtc 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#ifndef lint
37static char copyright[] =
38"@(#) 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	8.2 (Berkeley) 1/23/94";
45#else
46static char rcsid[] = "$NetBSD: main.c,v 1.19 1995/11/28 05:25:28 jtc 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 <ufs/ufs/dinode.h>
54#include <ufs/ffs/fs.h>
55#include <fstab.h>
56#include <stdlib.h>
57#include <string.h>
58#include <ctype.h>
59#include <stdio.h>
60#include <unistd.h>
61
62#include "fsck.h"
63#include "extern.h"
64
65void	catch(), catchquit(), voidquit();
66int	returntosingle;
67int argtoi __P((int, char *, char *, int));
68int checkfilesys __P((char *, char *, long, int));
69int docheck __P((struct fstab *));
70
71int
72main(argc, argv)
73	int	argc;
74	char	*argv[];
75{
76	int ch;
77	int ret, maxrun = 0;
78	extern char *optarg, *blockcheck();
79	extern int optind;
80
81	sync();
82	skipclean = 1;
83	while ((ch = getopt(argc, argv, "dfpnNyYb:c:l:m:")) != EOF) {
84		switch (ch) {
85		case 'p':
86			preen++;
87			break;
88
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 'c':
96			skipclean = 0;
97			cvtlevel = argtoi('c', "conversion level", optarg, 10);
98			break;
99
100		case 'd':
101			debug++;
102			break;
103
104		case 'f':
105			skipclean = 0;
106			break;
107
108		case 'l':
109			maxrun = argtoi('l', "number", optarg, 10);
110			break;
111
112		case 'm':
113			lfmode = argtoi('m', "mode", optarg, 8);
114			if (lfmode &~ 07777)
115				errexit("bad mode to -m: %o\n", lfmode);
116			printf("** lost+found creation mode %o\n", lfmode);
117			break;
118
119		case 'n':
120		case 'N':
121			nflag++;
122			yflag = 0;
123			break;
124
125		case 'y':
126		case 'Y':
127			yflag++;
128			nflag = 0;
129			break;
130
131		default:
132			errexit("%c option?\n", ch);
133		}
134	}
135	argc -= optind;
136	argv += optind;
137	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
138		(void)signal(SIGINT, catch);
139	if (preen)
140		(void)signal(SIGQUIT, catchquit);
141	if (argc) {
142		while (argc-- > 0)
143			(void)checkfilesys(blockcheck(*argv++), 0, 0L, 0);
144		exit(0);
145	}
146	ret = checkfstab(preen, maxrun, docheck, checkfilesys);
147	if (returntosingle)
148		exit(2);
149	exit(ret);
150}
151
152int
153argtoi(flag, req, str, base)
154	int flag;
155	char *req, *str;
156	int base;
157{
158	char *cp;
159	int ret;
160
161	ret = (int)strtol(str, &cp, base);
162	if (cp == str || *cp)
163		errexit("-%c flag requires a %s\n", flag, req);
164	return (ret);
165}
166
167/*
168 * Determine whether a filesystem should be checked.
169 */
170int
171docheck(fsp)
172	register struct fstab *fsp;
173{
174
175	if ((strcmp(fsp->fs_vfstype, "ufs") &&
176	     strcmp(fsp->fs_vfstype, "ffs")) ||
177	    (strcmp(fsp->fs_type, FSTAB_RW) &&
178	     strcmp(fsp->fs_type, FSTAB_RO)) ||
179	    fsp->fs_passno == 0)
180		return (0);
181	return (1);
182}
183
184/*
185 * Check the specified filesystem.
186 */
187/* ARGSUSED */
188int
189checkfilesys(filesys, mntpt, auxdata, child)
190	char *filesys, *mntpt;
191	long auxdata;
192	int child;
193{
194	daddr_t n_ffree, n_bfree;
195	struct dups *dp;
196	struct zlncnt *zlnp;
197	int cylno;
198
199	if (preen && child)
200		(void)signal(SIGQUIT, voidquit);
201	cdevname = filesys;
202	if (debug && preen)
203		pwarn("starting\n");
204	switch (setup(filesys)) {
205	case 0:
206		if (preen)
207			pfatal("CAN'T CHECK FILE SYSTEM.");
208	case -1:
209		return (0);
210	}
211	/*
212	 * 1: scan inodes tallying blocks used
213	 */
214	if (preen == 0) {
215		printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
216		if (hotroot)
217			printf("** Root file system\n");
218		printf("** Phase 1 - Check Blocks and Sizes\n");
219	}
220	pass1();
221
222	/*
223	 * 1b: locate first references to duplicates, if any
224	 */
225	if (duplist) {
226		if (preen)
227			pfatal("INTERNAL ERROR: dups with -p");
228		printf("** Phase 1b - Rescan For More DUPS\n");
229		pass1b();
230	}
231
232	/*
233	 * 2: traverse directories from root to mark all connected directories
234	 */
235	if (preen == 0)
236		printf("** Phase 2 - Check Pathnames\n");
237	pass2();
238
239	/*
240	 * 3: scan inodes looking for disconnected directories
241	 */
242	if (preen == 0)
243		printf("** Phase 3 - Check Connectivity\n");
244	pass3();
245
246	/*
247	 * 4: scan inodes looking for disconnected files; check reference counts
248	 */
249	if (preen == 0)
250		printf("** Phase 4 - Check Reference Counts\n");
251	pass4();
252
253	/*
254	 * 5: check and repair resource counts in cylinder groups
255	 */
256	if (preen == 0)
257		printf("** Phase 5 - Check Cyl groups\n");
258	pass5();
259
260	/*
261	 * print out summary statistics
262	 */
263	n_ffree = sblock.fs_cstotal.cs_nffree;
264	n_bfree = sblock.fs_cstotal.cs_nbfree;
265	pwarn("%ld files, %ld used, %ld free ",
266	    n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree);
267	printf("(%ld frags, %ld blocks, %d.%d%% fragmentation)\n",
268	    n_ffree, n_bfree, (n_ffree * 100) / sblock.fs_dsize,
269	    ((n_ffree * 1000 + sblock.fs_dsize / 2) / sblock.fs_dsize) % 10);
270	if (debug &&
271	    (n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree))
272		printf("%ld files missing\n", n_files);
273	if (debug) {
274		n_blks += sblock.fs_ncg *
275			(cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
276		n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
277		n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
278		if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree))
279			printf("%ld blocks missing\n", n_blks);
280		if (duplist != NULL) {
281			printf("The following duplicate blocks remain:");
282			for (dp = duplist; dp; dp = dp->next)
283				printf(" %ld,", dp->dup);
284			printf("\n");
285		}
286		if (zlnhead != NULL) {
287			printf("The following zero link count inodes remain:");
288			for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
289				printf(" %lu,", zlnp->zlncnt);
290			printf("\n");
291		}
292	}
293	zlnhead = (struct zlncnt *)0;
294	duplist = (struct dups *)0;
295	muldup = (struct dups *)0;
296	inocleanup();
297	if (fsmodified) {
298		(void)time(&sblock.fs_time);
299		sbdirty();
300	}
301	if (cvtlevel && sblk.b_dirty) {
302		/*
303		 * Write out the duplicate super blocks
304		 */
305		for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
306			bwrite(fswritefd, (char *)&sblock,
307			    fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE);
308	}
309	ckfini(1);
310	free(blockmap);
311	free(statemap);
312	free((char *)lncntp);
313	if (!fsmodified)
314		return (0);
315	if (!preen)
316		printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
317	if (hotroot) {
318		struct statfs stfs_buf;
319		/*
320		 * We modified the root.  Do a mount update on
321		 * it, unless it is read-write, so we can continue.
322		 */
323		if (statfs("/", &stfs_buf) == 0) {
324			long flags = stfs_buf.f_flags;
325			struct ufs_args args;
326			int ret;
327
328			if (flags & MNT_RDONLY) {
329				args.fspec = 0;
330				args.export.ex_flags = 0;
331				args.export.ex_root = 0;
332				flags |= MNT_UPDATE | MNT_RELOAD;
333				ret = mount(MOUNT_FFS, "/", flags, &args);
334				if (ret == 0)
335					return(0);
336			}
337		}
338		if (!preen)
339			printf("\n***** REBOOT NOW *****\n");
340		sync();
341		return (4);
342	}
343	return (0);
344}
345