154 lines
4.2 KiB
C
154 lines
4.2 KiB
C
/*-
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1990, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)dev_mkdb.c 8.1 (Berkeley) 6/6/93";
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#endif
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static const char rcsid[] =
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"$Id$";
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#endif /* not lint */
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#include <sys/param.h>
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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 <fcntl.h>
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#include <kvm.h>
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#include <nlist.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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static void usage __P((void));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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register DIR *dirp;
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register 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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int ch;
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u_char buf[MAXNAMLEN + 1];
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char dbtmp[MAXPATHLEN + 1], dbname[MAXPATHLEN + 1];
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while ((ch = getopt(argc, argv, "")) != -1)
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switch((char)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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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, NULL);
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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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exit(0);
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}
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static void
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usage()
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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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}
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