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
53static void usage(void) __dead2;
54
55int
56main(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
126static void
127usage(void)
128{
129	fprintf(stderr,
130	    "usage: ldconfig [-32] [-BRimr] [-f hints_file]"
131	    "[directory | file ...]\n");
132	exit(1);
133}
134