[unix-history] / usr.sbin / dev_mkdb / dev_mkdb.c

/*-
 * Copyright (c) 1990 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) 1990 The Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)dev_mkdb.c	5.9 (Berkeley) 5/17/91";
#endif /* not lint */

#include <sys/param.h>
#include <sys/stat.h>
#include <fcntl.h>
#undef DIRBLKSIZ
#include <dirent.h>
#include <nlist.h>
#include <kvm.h>
#include <db.h>
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <paths.h>
#include <stdlib.h>
#include <string.h>

void error(), usage();

main(argc, argv)
	int argc;
	char **argv;
{
	extern int optind;
	register DIR *dirp;
	register struct dirent *dp;
	struct stat sb;
	struct {
		mode_t type;
		dev_t dev;
	} bkey;
	DB *db;
	DBT data, key;
	int ch;
	u_char buf[MAXNAMLEN + 1];
	char dbtmp[MAXPATHLEN + 1], dbname[MAXPATHLEN + 1];

	while ((ch = getopt(argc, argv, "")) != EOF)
		switch((char)ch) {
		case '?':
		default:
			usage();
		}
	argc -= optind;
	argv += optind;

	if (chdir(_PATH_DEV))
		error(_PATH_DEV);

	dirp = opendir(".");

	(void)snprintf(dbtmp, sizeof(dbtmp), "%s/dev.tmp", _PATH_VARRUN);
	(void)snprintf(dbname, sizeof(dbtmp), "%s/dev.db", _PATH_VARRUN);
	db = dbopen(dbtmp, O_CREAT|O_RDWR|O_EXCL, DEFFILEMODE, DB_HASH,
	    (HASHINFO *)NULL);
	if (!db)
		error(dbtmp);

	/*
	 * Keys are a mode_t followed by a dev_t.  The former is the type of
	 * the file (mode & S_IFMT), the latter is the st_rdev field.
	 */
	key.data = &bkey;
	key.size = sizeof(bkey);
	data.data = buf;
	while (dp = readdir(dirp)) {
		if (stat(dp->d_name, &sb)) {
			(void)fprintf(stderr, "dev_mkdb: can't stat %s\n",
				dp->d_name);
			continue;
		}

		/* Create the key. */
		if (S_ISCHR(sb.st_mode))
			bkey.type = S_IFCHR;
		else if (S_ISBLK(sb.st_mode))
			bkey.type = S_IFBLK;
		else
			continue;
		bkey.dev = sb.st_rdev;

		/*
		 * Create the data; nul terminate the name so caller doesn't
		 * have to.
		 */
		bcopy(dp->d_name, buf, dp->d_namlen);
		buf[dp->d_namlen] = '\0';
		data.size = dp->d_namlen + 1;
		if ((db->put)(db, &key, &data, 0))
			error(dbtmp);
	}
	(void)(db->close)(db);
	if (rename(dbtmp, dbname)) {
		(void)fprintf(stderr, "dev_mkdb: %s to %s: %s.\n",
		    dbtmp, dbname, strerror(errno));
		exit(1);
	}
	exit(0);
}

void
error(n)
	char *n;
{
	(void)fprintf(stderr, "dev_mkdb: %s: %s\n", n, strerror(errno));
	exit(1);
}

void
usage()
{
	(void)fprintf(stderr, "usage: dev_mkdb\n");
	exit(1);
}
Commit	Line	Data
15637ed4 RG	1	/*-
	2	* Copyright (c) 1990 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) 1990 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[] = "@(#)dev_mkdb.c 5.9 (Berkeley) 5/17/91";
	42	#endif /* not lint */
	43
	44	#include <sys/param.h>
	45	#include <sys/stat.h>
	46	#include <fcntl.h>
	47	#undef DIRBLKSIZ
	48	#include <dirent.h>
	49	#include <nlist.h>
	50	#include <kvm.h>
	51	#include <db.h>
	52	#include <errno.h>
	53	#include <unistd.h>
	54	#include <stdio.h>
	55	#include <paths.h>
	56	#include <stdlib.h>
	57	#include <string.h>
	58
	59	void error(), usage();
	60
	61	main(argc, argv)
	62	int argc;
	63	char **argv;
	64	{
65	extern int optind;
66	register DIR *dirp;
67	register struct dirent *dp;
68	struct stat sb;
69	struct {
70	mode_t type;
71	dev_t dev;
72	} bkey;
73	DB *db;
74	DBT data, key;
75	int ch;
76	u_char buf[MAXNAMLEN + 1];
77	char dbtmp[MAXPATHLEN + 1], dbname[MAXPATHLEN + 1];
78
79	while ((ch = getopt(argc, argv, "")) != EOF)
80	switch((char)ch) {
81	case '?':
82	default:
83	usage();
84	}
85	argc -= optind;
86	argv += optind;
87
88	if (chdir(_PATH_DEV))
89	error(_PATH_DEV);
90
91	dirp = opendir(".");
92
93	(void)snprintf(dbtmp, sizeof(dbtmp), "%s/dev.tmp", _PATH_VARRUN);
94	(void)snprintf(dbname, sizeof(dbtmp), "%s/dev.db", _PATH_VARRUN);
78ed81a3	95	db = dbopen(dbtmp, O_CREAT\|O_RDWR\|O_EXCL, DEFFILEMODE, DB_HASH,
15637ed4 RG	96	(HASHINFO *)NULL);
	97	if (!db)
	98	error(dbtmp);
	99
	100	/*
	101	* Keys are a mode_t followed by a dev_t. The former is the type of
	102	* the file (mode & S_IFMT), the latter is the st_rdev field.
	103	*/
	104	key.data = &bkey;
	105	key.size = sizeof(bkey);
	106	data.data = buf;
	107	while (dp = readdir(dirp)) {
	108	if (stat(dp->d_name, &sb)) {
	109	(void)fprintf(stderr, "dev_mkdb: can't stat %s\n",
	110	dp->d_name);
	111	continue;
	112	}
	113
	114	/* Create the key. */
	115	if (S_ISCHR(sb.st_mode))
	116	bkey.type = S_IFCHR;
	117	else if (S_ISBLK(sb.st_mode))
	118	bkey.type = S_IFBLK;
	119	else
	120	continue;
	121	bkey.dev = sb.st_rdev;
	122
	123	/*
	124	* Create the data; nul terminate the name so caller doesn't
	125	* have to.
	126	*/
	127	bcopy(dp->d_name, buf, dp->d_namlen);
	128	buf[dp->d_namlen] = '\0';
	129	data.size = dp->d_namlen + 1;
	130	if ((db->put)(db, &key, &data, 0))
	131	error(dbtmp);
	132	}
	133	(void)(db->close)(db);
	134	if (rename(dbtmp, dbname)) {
	135	(void)fprintf(stderr, "dev_mkdb: %s to %s: %s.\n",
	136	dbtmp, dbname, strerror(errno));
	137	exit(1);
	138	}
	139	exit(0);
	140	}
	141
	142	void
	143	error(n)
	144	char *n;
	145	{
	146	(void)fprintf(stderr, "dev_mkdb: %s: %s\n", n, strerror(errno));
	147	exit(1);
	148	}
	149
	150	void
	151	usage()
	152	{
	153	(void)fprintf(stderr, "usage: dev_mkdb\n");
	154	exit(1);
	155	}