1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 1993,1995 Paul Kranenburg
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Paul Kranenburg.
18 * 4. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/param.h>
34 #include <sys/types.h>
35 #include <sys/stat.h>
36 #include <sys/mman.h>
37 #include <a.out.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 <stdbool.h>
45 #include <stdio.h>
46 #include <stdlib.h>
47 #include <string.h>
48 #include <unistd.h>
49
50 #include "ldconfig.h"
51 #include "rtld_paths.h"
52
53 static void usage(void) __dead2;
54
55 int
main(int argc,char ** argv)56 main(int argc, char **argv)
57 {
58 const char *hints_file;
59 int c;
60 bool is_32, justread, merge, rescan, force_be;
61
62 force_be = is_32 = justread = merge = rescan = false;
63
64 while (argc > 1) {
65 if (strcmp(argv[1], "-aout") == 0) {
66 errx(1, "aout is not supported");
67 } else if (strcmp(argv[1], "-elf") == 0) {
68 argc--;
69 argv++;
70 } else if (strcmp(argv[1], "-32") == 0) {
71 is_32 = true;
72 argc--;
73 argv++;
74 } else {
75 break;
76 }
77 }
78
79 if (is_32)
80 hints_file = __PATH_ELF_HINTS("32");
81 else
82 hints_file = _PATH_ELF_HINTS;
83 while((c = getopt(argc, argv, "BRf:imrsv")) != -1) {
84 switch (c) {
85 case 'B':
86 force_be = true;
87 break;
88 case 'R':
89 rescan = true;
90 break;
91 case 'f':
92 hints_file = optarg;
93 break;
94 case 'i':
95 insecure = true;
96 break;
97 case 'm':
98 merge = true;
99 break;
100 case 'r':
101 justread = true;
102 break;
103 case 's':
104 /* was nostd */
105 break;
106 case 'v':
107 /* was verbose */
108 break;
109 default:
110 usage();
111 break;
112 }
113 }
114
115 if (justread) {
116 list_elf_hints(hints_file);
117 } else {
118 if (argc == optind)
119 rescan = true;
120 update_elf_hints(hints_file, argc - optind,
121 argv + optind, merge || rescan, force_be);
122 }
123 exit(0);
124 }
125
126 static void
usage(void)127 usage(void)
128 {
129 fprintf(stderr,
130 "usage: ldconfig [-32] [-BRimr] [-f hints_file]"
131 "[directory | file ...]\n");
132 exit(1);
133 }
134