[unix-history] / sbin / fsck / main.c

/*
 * Copyright (c) 1980, 1986 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1980, 1986 The Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)main.c	5.27 (Berkeley) 8/7/90";
static char rcsid[] = "$Header: /b/source/CVS/src/sbin/fsck/main.c,v 1.3 1993/03/23 00:27:55 cgd Exp $";
#endif /* not lint */

#include <sys/param.h>
#include <ufs/dinode.h>
#include <ufs/fs.h>
#include <fstab.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>
#include "fsck.h"

void	catch(), catchquit(), voidquit();
int	returntosingle;

main(argc, argv)
	int	argc;
	char	*argv[];
{
	int ch;
	int ret, maxrun = 0;
	extern int docheck(), checkfilesys();
	extern char *optarg;
	extern int optind;

	sync();
	while ((ch = getopt(argc, argv, "cdpnNyYb:l:m:")) != EOF) {
		switch (ch) {
		case 'p':
			preen++;
			break;

		case 'b':
			bflag = argtoi('b', "number", optarg, 10);
			printf("Alternate super block location: %d\n", bflag);
			break;

		case 'c':
			cvtflag++;
			break;

		case 'd':
			debug++;
			break;

		case 'l':
			maxrun = argtoi('l', "number", optarg, 10);
			break;

		case 'm':
			lfmode = argtoi('m', "mode", optarg, 8);
			if (lfmode &~ 07777)
				errexit("bad mode to -m: %o\n", lfmode);
			printf("** lost+found creation mode %o\n", lfmode);
			break;

		case 'n':
		case 'N':
			nflag++;
			yflag = 0;
			break;

		case 'y':
		case 'Y':
			yflag++;
			nflag = 0;
			break;

		default:
			errexit("%c option?\n", ch);
		}
	}
	argc -= optind;
	argv += optind;
	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
		(void)signal(SIGINT, catch);
	if (preen)
		(void)signal(SIGQUIT, catchquit);
	if (argc) {
		while (argc-- > 0)
			(void)checkfilesys(*argv++, (char *)0, 0L, 0);
		exit(0);
	}
	ret = checkfstab(preen, maxrun, docheck, checkfilesys);
	if (returntosingle)
		exit(2);
	exit(ret);
}

argtoi(flag, req, str, base)
	int flag;
	char *req, *str;
	int base;
{
	char *cp;
	int ret;

	ret = (int)strtol(str, &cp, base);
	if (cp == str || *cp)
		errexit("-%c flag requires a %s\n", flag, req);
	return (ret);
}

/*
 * Determine whether a filesystem should be checked.
 */
docheck(fsp)
	register struct fstab *fsp;
{

	if (strcmp(fsp->fs_vfstype, "ufs") ||
	    (strcmp(fsp->fs_type, FSTAB_RW) &&
	     strcmp(fsp->fs_type, FSTAB_RO)) ||
	    fsp->fs_passno == 0)
		return (0);
	return (1);
}

/*
 * Check the specified filesystem.
 */
/* ARGSUSED */
checkfilesys(filesys, mntpt, auxdata, child)
	char *filesys, *mntpt;
	long auxdata;
{
	daddr_t n_ffree, n_bfree;
	struct dups *dp;
	struct zlncnt *zlnp;

	if (preen && child)
		(void)signal(SIGQUIT, voidquit);
	devname = filesys;
	if (debug && preen)
		pwarn("starting\n");
	if (setup(filesys) == 0) {
		if (preen)
			pfatal("CAN'T CHECK FILE SYSTEM.");
		return (0);
	}
	/*
	 * 1: scan inodes tallying blocks used
	 */
	if (preen == 0) {
		printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
		if (hotroot)
			printf("** Root file system\n");
		printf("** Phase 1 - Check Blocks and Sizes\n");
	}
	pass1();

	/*
	 * 1b: locate first references to duplicates, if any
	 */
	if (duplist) {
		if (preen)
			pfatal("INTERNAL ERROR: dups with -p");
		printf("** Phase 1b - Rescan For More DUPS\n");
		pass1b();
	}

	/*
	 * 2: traverse directories from root to mark all connected directories
	 */
	if (preen == 0)
		printf("** Phase 2 - Check Pathnames\n");
	pass2();

	/*
	 * 3: scan inodes looking for disconnected directories
	 */
	if (preen == 0)
		printf("** Phase 3 - Check Connectivity\n");
	pass3();

	/*
	 * 4: scan inodes looking for disconnected files; check reference counts
	 */
	if (preen == 0)
		printf("** Phase 4 - Check Reference Counts\n");
	pass4();

	/*
	 * 5: check and repair resource counts in cylinder groups
	 */
	if (preen == 0)
		printf("** Phase 5 - Check Cyl groups\n");
	pass5();

	/*
	 * print out summary statistics
	 */
	n_ffree = sblock.fs_cstotal.cs_nffree;
	n_bfree = sblock.fs_cstotal.cs_nbfree;
	pwarn("%ld files, %ld used, %ld free ",
	    n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree);
	printf("(%ld frags, %ld blocks, %.1f%% fragmentation)\n",
	    n_ffree, n_bfree, (float)(n_ffree * 100) / sblock.fs_dsize);
	if (debug &&
	    (n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree))
		printf("%ld files missing\n", n_files);
	if (debug) {
		n_blks += sblock.fs_ncg *
			(cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
		n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
		n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
		if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree))
			printf("%ld blocks missing\n", n_blks);
		if (duplist != NULL) {
			printf("The following duplicate blocks remain:");
			for (dp = duplist; dp; dp = dp->next)
				printf(" %ld,", dp->dup);
			printf("\n");
		}
		if (zlnhead != NULL) {
			printf("The following zero link count inodes remain:");
			for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
				printf(" %lu,", zlnp->zlncnt);
			printf("\n");
		}
	}
	zlnhead = (struct zlncnt *)0;
	duplist = (struct dups *)0;
	inocleanup();
	if (fsmodified) {
		(void)time(&sblock.fs_time);
		sbdirty();
	}
	ckfini();
	free(blockmap);
	free(statemap);
	free((char *)lncntp);
	if (!fsmodified)
		return (0);
	if (!preen) {
		printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
		if (hotroot)
			printf("\n***** REBOOT UNIX *****\n");
	}
	if (hotroot) {
		sync();
		return (4);
	}
	return (0);
}
Commit	Line	Data
15637ed4 RG	1	/*
	2	* Copyright (c) 1980, 1986 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*/
	33
	34	#ifndef lint
	35	char copyright[] =
	36	"@(#) Copyright (c) 1980, 1986 The Regents of the University of California.\n\
	37	All rights reserved.\n";
	38	#endif /* not lint */
	39
	40	#ifndef lint
	41	static char sccsid[] = "@(#)main.c 5.27 (Berkeley) 8/7/90";
4c30d378	42	static char rcsid[] = "$Header: /b/source/CVS/src/sbin/fsck/main.c,v 1.3 1993/03/23 00:27:55 cgd Exp $";
15637ed4 RG	43	#endif /* not lint */
	44
	45	#include <sys/param.h>
	46	#include <ufs/dinode.h>
	47	#include <ufs/fs.h>
	48	#include <fstab.h>
	49	#include <stdlib.h>
	50	#include <string.h>
	51	#include <ctype.h>
	52	#include <stdio.h>
	53	#include "fsck.h"
	54
	55	void catch(), catchquit(), voidquit();
	56	int returntosingle;
	57
	58	main(argc, argv)
	59	int argc;
	60	char *argv[];
	61	{
	62	int ch;
	63	int ret, maxrun = 0;
	64	extern int docheck(), checkfilesys();
	65	extern char *optarg;
	66	extern int optind;
	67
	68	sync();
	69	while ((ch = getopt(argc, argv, "cdpnNyYb:l:m:")) != EOF) {
	70	switch (ch) {
	71	case 'p':
	72	preen++;
	73	break;
	74
	75	case 'b':
	76	bflag = argtoi('b', "number", optarg, 10);
	77	printf("Alternate super block location: %d\n", bflag);
	78	break;
	79
	80	case 'c':
	81	cvtflag++;
	82	break;
	83
	84	case 'd':
	85	debug++;
	86	break;
	87
	88	case 'l':
	89	maxrun = argtoi('l', "number", optarg, 10);
	90	break;
	91
	92	case 'm':
	93	lfmode = argtoi('m', "mode", optarg, 8);
	94	if (lfmode &~ 07777)
	95	errexit("bad mode to -m: %o\n", lfmode);
	96	printf("** lost+found creation mode %o\n", lfmode);
	97	break;
	98
	99	case 'n':
	100	case 'N':
	101	nflag++;
	102	yflag = 0;
	103	break;
	104
	105	case 'y':
	106	case 'Y':
107	yflag++;
108	nflag = 0;
109	break;
110
111	default:
112	errexit("%c option?\n", ch);
113	}
114	}
115	argc -= optind;
116	argv += optind;
117	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
118	(void)signal(SIGINT, catch);
119	if (preen)
120	(void)signal(SIGQUIT, catchquit);
121	if (argc) {
122	while (argc-- > 0)
123	(void)checkfilesys(argv++, (char )0, 0L, 0);
124	exit(0);
125	}
126	ret = checkfstab(preen, maxrun, docheck, checkfilesys);
127	if (returntosingle)
128	exit(2);
129	exit(ret);
130	}
131
132	argtoi(flag, req, str, base)
133	int flag;
134	char req, str;
135	int base;
136	{
137	char *cp;
138	int ret;
139
140	ret = (int)strtol(str, &cp, base);
141	if (cp == str \|\| *cp)
142	errexit("-%c flag requires a %s\n", flag, req);
143	return (ret);
144	}
145
146	/*
147	* Determine whether a filesystem should be checked.
148	*/
149	docheck(fsp)
150	register struct fstab *fsp;
151	{
152
153	if (strcmp(fsp->fs_vfstype, "ufs") \|\|
154	(strcmp(fsp->fs_type, FSTAB_RW) &&
155	strcmp(fsp->fs_type, FSTAB_RO)) \|\|
156	fsp->fs_passno == 0)
157	return (0);
158	return (1);
159	}
160
161	/*
162	* Check the specified filesystem.
163	*/
164	/* ARGSUSED */
165	checkfilesys(filesys, mntpt, auxdata, child)
166	char filesys, mntpt;
167	long auxdata;
168	{
169	daddr_t n_ffree, n_bfree;
170	struct dups *dp;
171	struct zlncnt *zlnp;
172
173	if (preen && child)
174	(void)signal(SIGQUIT, voidquit);
175	devname = filesys;
176	if (debug && preen)
177	pwarn("starting\n");
178	if (setup(filesys) == 0) {
179	if (preen)
180	pfatal("CAN'T CHECK FILE SYSTEM.");
181	return (0);
182	}
183	/*
184	* 1: scan inodes tallying blocks used
185	*/
186	if (preen == 0) {
187	printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
188	if (hotroot)
189	printf("** Root file system\n");
190	printf("** Phase 1 - Check Blocks and Sizes\n");
191	}
192	pass1();
193
194	/*
195	* 1b: locate first references to duplicates, if any
196	*/
197	if (duplist) {
198	if (preen)
199	pfatal("INTERNAL ERROR: dups with -p");
200	printf("** Phase 1b - Rescan For More DUPS\n");
201	pass1b();
202	}
203
204	/*
205	* 2: traverse directories from root to mark all connected directories
206	*/
207	if (preen == 0)
208	printf("** Phase 2 - Check Pathnames\n");
209	pass2();
210
211	/*
212	* 3: scan inodes looking for disconnected directories
213	*/
214	if (preen == 0)
215	printf("** Phase 3 - Check Connectivity\n");
216	pass3();
217
218	/*
219	* 4: scan inodes looking for disconnected files; check reference counts
220	*/
221	if (preen == 0)
222	printf("** Phase 4 - Check Reference Counts\n");
223	pass4();
224
225	/*
226	* 5: check and repair resource counts in cylinder groups
227	*/
228	if (preen == 0)
229	printf("** Phase 5 - Check Cyl groups\n");
230	pass5();
231
232	/*
233	* print out summary statistics
234	*/
235	n_ffree = sblock.fs_cstotal.cs_nffree;
236	n_bfree = sblock.fs_cstotal.cs_nbfree;
237	pwarn("%ld files, %ld used, %ld free ",
238	n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree);
239	printf("(%ld frags, %ld blocks, %.1f%% fragmentation)\n",
240	n_ffree, n_bfree, (float)(n_ffree * 100) / sblock.fs_dsize);
241	if (debug &&
242	(n_files -= maxino - ROOTINO - sblock.fs_cstotal.cs_nifree))
243	printf("%ld files missing\n", n_files);
244	if (debug) {
245	n_blks += sblock.fs_ncg *
246	(cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
247	n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
248	n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
249	if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree))
250	printf("%ld blocks missing\n", n_blks);
251	if (duplist != NULL) {
252	printf("The following duplicate blocks remain:");
253	for (dp = duplist; dp; dp = dp->next)
254	printf(" %ld,", dp->dup);
255	printf("\n");
256	}
257	if (zlnhead != NULL) {
258	printf("The following zero link count inodes remain:");
259	for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
260	printf(" %lu,", zlnp->zlncnt);
261	printf("\n");
262	}
263	}
264	zlnhead = (struct zlncnt *)0;
265	duplist = (struct dups *)0;
266	inocleanup();
267	if (fsmodified) {
268	(void)time(&sblock.fs_time);
269	sbdirty();
270	}
271	ckfini();
272	free(blockmap);
273	free(statemap);
274	free((char *)lncntp);
275	if (!fsmodified)
276	return (0);
277	if (!preen) {
278	printf("\n*** FILE SYSTEM WAS MODIFIED ***\n");
279	if (hotroot)
280	printf("\n*** REBOOT UNIX ***\n");
281	}
282	if (hotroot) {
283	sync();
284	return (4);
285	}
286	return (0);
287	}