kvm_mkdb.tproj/kvm_mkdb.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.0 (the 'License').  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License."
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*-
  25  * Copyright (c) 1990, 1993
  26  *      The Regents of the University of California.  All rights reserved.
  27  *
  28  * Redistribution and use in source and binary forms, with or without
  29  * modification, are permitted provided that the following conditions
  30  * are met:
  31  * 1. Redistributions of source code must retain the above copyright
  32  *    notice, this list of conditions and the following disclaimer.
  33  * 2. Redistributions in binary form must reproduce the above copyright
  34  *    notice, this list of conditions and the following disclaimer in the
  35  *    documentation and/or other materials provided with the distribution.
  36  * 3. All advertising materials mentioning features or use of this software
  37  *    must display the following acknowledgement:
  38  *      This product includes software developed by the University of
  39  *      California, Berkeley and its contributors.
  40  * 4. Neither the name of the University nor the names of its contributors
  41  *    may be used to endorse or promote products derived from this software
  42  *    without specific prior written permission.
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  45  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  47  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  48  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  49  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  50  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  51  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  52  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  53  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  54  * SUCH DAMAGE.
  55  */
  56
  57 #ifndef lint
  58 static char copyright[] =
  59 "@(#) Copyright (c) 1990, 1993\n\
  60         The Regents of the University of California.  All rights reserved.\n";
  61 #endif /* not lint */
  62
  63 #ifndef lint
  64 static char sccsid[] = "@(#)kvm_mkdb.c  8.3 (Berkeley) 5/4/95";
  65 #endif /* not lint */
  66
  67 #include <sys/param.h>
  68 #include <sys/stat.h>
  69
  70 #include <db.h>
  71 #include <err.h>
  72 #include <errno.h>
  73 #include <fcntl.h>
  74 #include <paths.h>
  75 #include <stdio.h>
  76 #include <stdlib.h>
  77 #include <string.h>
  78 #include <unistd.h>
  79
  80 #include "extern.h"
  81
  82 static void usage __P((void));
  83
  84 HASHINFO openinfo = {
  85         4096,           /* bsize */
  86         128,            /* ffactor */
  87         1024,           /* nelem */
  88         2048 * 1024,    /* cachesize */
  89         NULL,           /* hash() */
  90         0               /* lorder */
  91 };
  92
  93 int
  94 main(argc, argv)
  95         int argc;
  96         char *argv[];
  97 {
  98         DB *db;
  99         int ch;
 100         char *p, *nlistpath, *nlistname, dbtemp[MAXPATHLEN], dbname[MAXPATHLEN];
 101
 102         while ((ch = getopt(argc, argv, "")) != EOF)
 103                 switch (ch) {
 104                 case '?':
 105                 default:
 106                         usage();
 107                 }
 108         argc -= optind;
 109         argv += optind;
 110
 111         if (argc > 1)
 112                 usage();
 113
 114         /* If the existing db file matches the currently running kernel, exit */
 115         if (testdb())
 116                 exit(0);
 117
 118 #define basename(cp)    ((p = rindex((cp), '/')) != NULL ? p + 1 : (cp))
 119         nlistpath = argc > 0 ? argv[0] : _PATH_UNIX;
 120         nlistname = basename(nlistpath);
 121
 122         (void)snprintf(dbtemp, sizeof(dbtemp), "%skvm_%s.tmp",
 123             _PATH_VARDB, nlistname);
 124         (void)snprintf(dbname, sizeof(dbname), "%skvm_%s.db",
 125             _PATH_VARDB, nlistname);
 126         (void)umask(0);
 127         db = dbopen(dbtemp, O_CREAT | O_EXLOCK | O_TRUNC | O_RDWR,
 128             S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH, DB_HASH, &openinfo);
 129         if (db == NULL)
 130                 err(1, "%s", dbtemp);
 131         create_knlist(nlistpath, db);
 132         if (db->close(db))
 133                 err(1, "%s", dbtemp);
 134         if (rename(dbtemp, dbname))
 135                 err(1, "rename %s to %s", dbtemp, dbname);
 136         exit(0);
 137 }
 138
 139 void
 140 usage()
 141 {
 142         (void)fprintf(stderr, "usage: kvm_mkdb [file]\n");
 143         exit(1);
 144 }