162 lines
4.2 KiB
C
162 lines
4.2 KiB
C
/* $NetBSD: kvm_mkdb.c,v 1.17 2000/06/14 06:49:25 cgd Exp $ */
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/*-
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* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
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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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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) 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[] = "from: @(#)kvm_mkdb.c 8.3 (Berkeley) 5/4/95";
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#else
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__RCSID("$NetBSD: kvm_mkdb.c,v 1.17 2000/06/14 06:49:25 cgd Exp $");
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#endif
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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 <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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#include "extern.h"
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int main __P((int, char **));
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static void usage __P((void));
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HASHINFO openinfo = {
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4096, /* bsize */
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128, /* ffactor */
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1024, /* nelem */
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2048 * 1024, /* cachesize */
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NULL, /* hash() */
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0 /* lorder */
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};
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static DB *db;
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static char *dbname = NULL;
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static char dbtemp[MAXPATHLEN];
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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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int ch;
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char *p, *nlistpath, *nlistname;
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int docheck = 0;
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while ((ch = getopt(argc, argv, "o:")) != -1)
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switch (ch) {
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case 'o':
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dbname = optarg;
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break;
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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 > 1)
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usage();
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if (dbname == NULL) {
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dbname = _PATH_KVMDB;
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docheck = 1;
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} else if (strncmp(_PATH_KVMDB, dbname, sizeof(_PATH_KVMDB)) == 0) {
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docheck = 1;
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}
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if (docheck) {
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/*
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* If the existing db file matches the currently running
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* kernel, exit
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*/
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if (testdb())
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exit(0);
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}
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#define basename(cp) ((p = strrchr((cp), '/')) != NULL ? p + 1 : (cp))
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nlistpath = argc > 0 ? argv[0] : _PATH_UNIX;
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nlistname = basename(nlistpath);
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(void)snprintf(dbtemp, sizeof(dbtemp), "%s.tmp", dbname);
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(void)umask(0);
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db = dbopen(dbtemp, O_CREAT | O_EXLOCK | O_TRUNC | O_RDWR,
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S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH, DB_HASH, &openinfo);
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if (db == NULL)
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err(1, "%s", dbtemp);
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create_knlist(nlistpath, db);
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if (db->close(db)) {
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warn("%s", dbtemp);
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db = NULL;
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punt();
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}
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db = NULL;
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if (rename(dbtemp, dbname)) {
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warn("rename %s to %s", dbtemp, dbname);
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punt();
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}
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exit(0);
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}
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void
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usage()
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{
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(void)fprintf(stderr, "usage: kvm_mkdb [-o database] [file]\n");
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exit(1);
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}
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void
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punt()
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{
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if (db != NULL)
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db->close(db);
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unlink(dbtemp);
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exit(1);
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}
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