sbin/ldconfig/ldconfig.c

   1 /*
   2  * Copyright (c) 1993,1995 Paul Kranenburg
   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 Paul Kranenburg.
  16  * 4. The name of the author may not be used to endorse or promote products
  17  *    derived from this software without specific prior written permission
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * $FreeBSD: src/sbin/ldconfig/ldconfig.c,v 1.31.2.3 2001/07/11 23:59:10 obrien Exp $
  31  * $DragonFly: src/sbin/ldconfig/ldconfig.c,v 1.6 2004/11/04 13:14:11 joerg Exp $
  32  */
  33
  34 #include <sys/param.h>
  35 #include <sys/types.h>
  36 #include <sys/stat.h>
  37 #include <sys/mman.h>
  38 #include <ctype.h>
  39 #include <dirent.h>
  40 #include <elf-hints.h>
  41 #include <err.h>
  42 #include <errno.h>
  43 #include <fcntl.h>
  44 #include <objformat.h>
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47 #include <string.h>
  48 #include <unistd.h>
  49
  50 #include "ldconfig.h"
  51
  52 #if DEBUG
  53 /* test */
  54 #undef _PATH_ELF_HINTS
  55 #define _PATH_ELF_HINTS         "./ld-elf.so.hints"
  56 #endif
  57
  58 #undef major
  59 #undef minor
  60
  61 static void             usage(void);
  62
  63 int
  64 main(int argc, char **argv)
  65 {
  66         static const char *hints_file;
  67         int c, nostd = 0, justread = 0, merge = 0, rescan = 0;
  68
  69         if (argc > 1 && strcmp(argv[1], "-elf") == 0) {
  70                 /* skip over legacy -elf arg */
  71                 argc--;
  72                 argv++;
  73         }
  74
  75         hints_file = _PATH_ELF_HINTS;
  76         if (argc == 1)
  77                 rescan = 1;
  78         else while((c = getopt(argc, argv, "Rf:imrsv")) != -1) {
  79                 switch (c) {
  80                 case 'R':
  81                         rescan = 1;
  82                         break;
  83                 case 'f':
  84                         hints_file = optarg;
  85                         break;
  86                 case 'i':
  87                         insecure = 1;
  88                         break;
  89                 case 'm':
  90                         merge = 1;
  91                         break;
  92                 case 'r':
  93                         justread = 1;
  94                         break;
  95                 case 's':
  96                         nostd = 1;
  97                         break;
  98                 default:
  99                         usage();
 100                         break;
 101                 }
 102         }
 103
 104         if (justread)
 105                 list_elf_hints(hints_file);
 106         else
 107                 update_elf_hints(hints_file, argc - optind, argv + optind,
 108                                  merge || rescan);
 109         return(0);
 110 }
 111
 112 static void
 113 usage(void)
 114 {
 115         fprintf(stderr,
 116         "usage: ldconfig [-elf] [-Rimrs] [-f hints_file] [dir | file ...]\n");
 117         exit(1);
 118 }