GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/dev_mkdb/dev_mkdb.c Lines: 0 47 0.0 %
Date: 2017-11-13 Branches: 0 22 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: dev_mkdb.c,v 1.15 2015/10/16 13:37:44 millert Exp $	*/
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/*-
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 * Copyright (c) 1990, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/stat.h>
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#include <db.h>
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#include <dirent.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <paths.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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void	usage(void);
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int
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main(int argc, char *argv[])
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{
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	DIR *dirp;
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	struct dirent *dp;
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	struct stat sb;
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	struct {
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		mode_t type;
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		dev_t dev;
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	} bkey;
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	DB *db;
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	DBT data, key;
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	HASHINFO info;
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	int ch;
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	u_char buf[MAXNAMLEN + 1];
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	char dbtmp[PATH_MAX], dbname[PATH_MAX];
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	if (pledge("stdio rpath wpath cpath flock", NULL) == -1)
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		err(1, "pledge");
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	while ((ch = getopt(argc, argv, "")) != -1)
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		switch(ch) {
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		case '?':
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		default:
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			usage();
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		}
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	argc -= optind;
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	argv += optind;
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	if (argc > 0)
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		usage();
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	if (chdir(_PATH_DEV))
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		err(1, "%s", _PATH_DEV);
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	dirp = opendir(".");
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	(void)snprintf(dbtmp, sizeof(dbtmp), "%sdev.tmp", _PATH_VARRUN);
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	(void)snprintf(dbname, sizeof(dbtmp), "%sdev.db", _PATH_VARRUN);
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	bzero(&info, sizeof(info));
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	info.bsize = 8192;
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	db = dbopen(dbtmp, O_CREAT|O_EXLOCK|O_RDWR|O_TRUNC,
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	    S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH, DB_HASH, &info);
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	if (db == NULL)
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		err(1, "%s", dbtmp);
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	/*
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	 * Keys are a mode_t followed by a dev_t.  The former is the type of
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	 * the file (mode & S_IFMT), the latter is the st_rdev field.  Note
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	 * that the structure may contain padding, so we have to clear it
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	 * out here.
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	 */
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	bzero(&bkey, sizeof(bkey));
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	key.data = &bkey;
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	key.size = sizeof(bkey);
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	data.data = buf;
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	while ((dp = readdir(dirp))) {
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		if (lstat(dp->d_name, &sb)) {
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			warn("%s", dp->d_name);
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			continue;
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		}
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		/* Create the key. */
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		if (S_ISCHR(sb.st_mode))
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			bkey.type = S_IFCHR;
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		else if (S_ISBLK(sb.st_mode))
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			bkey.type = S_IFBLK;
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		else
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			continue;
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		bkey.dev = sb.st_rdev;
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		/*
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		 * Create the data; nul terminate the name so caller doesn't
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		 * have to.
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		 */
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		bcopy(dp->d_name, buf, dp->d_namlen);
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		buf[dp->d_namlen] = '\0';
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		data.size = dp->d_namlen + 1;
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		if ((db->put)(db, &key, &data, 0))
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			err(1, "dbput %s", dbtmp);
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	}
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	(void)(db->close)(db);
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	if (rename(dbtmp, dbname))
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		err(1, "rename %s to %s", dbtmp, dbname);
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	return (0);
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}
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void
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usage(void)
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{
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	(void)fprintf(stderr, "usage: dev_mkdb\n");
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	exit(1);
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}