3ede04c78c
Default action for ldconfig is specified as -R AKA 'append', and for no-args (without options changing default actions), ldconfig should append empty list of directories to current list. But because the check was done before options were parsed out, presence of any option turned off default rescan. As result, innocently-looked commands like `ldconfig -v' were interpreted as setting directory hints list to one specified on the command line, i.e. empty. Reported by: https://github.com/mesonbuild/meson/issues/9592 Reviewed by: emaste Tested by: jbeich Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D33058
141 lines
3.6 KiB
C
141 lines
3.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-4-Clause
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*
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* Copyright (c) 1993,1995 Paul Kranenburg
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* 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 Paul Kranenburg.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <a.out.h>
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#include <ctype.h>
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#include <dirent.h>
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#include <elf-hints.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 <stdbool.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 "ldconfig.h"
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#include "rtld_paths.h"
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#define _PATH_LD32_HINTS "/var/run/ld32.so.hints"
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#define _PATH_ELF32_HINTS "/var/run/ld-elf32.so.hints"
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#define _PATH_ELFSOFT_HINTS "/var/run/ld-elf-soft.so.hints"
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static void usage(void);
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int
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main(int argc, char **argv)
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{
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const char *hints_file;
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int c;
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bool is_32, is_soft, justread, merge, rescan, verbose;
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is_32 = is_soft = justread = merge = rescan = verbose = false;
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while (argc > 1) {
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if (strcmp(argv[1], "-aout") == 0) {
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errx(1, "aout is not supported");
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} else if (strcmp(argv[1], "-elf") == 0) {
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argc--;
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argv++;
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} else if (strcmp(argv[1], "-32") == 0) {
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is_32 = true;
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argc--;
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argv++;
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} else if (strcmp(argv[1], "-soft") == 0) {
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is_soft = true;
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argc--;
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argv++;
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} else {
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break;
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}
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}
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if (is_soft)
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hints_file = _PATH_SOFT_ELF_HINTS;
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else if (is_32)
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hints_file = _PATH_ELF32_HINTS;
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else
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hints_file = _PATH_ELF_HINTS;
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while((c = getopt(argc, argv, "Rf:imrsv")) != -1) {
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switch (c) {
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case 'R':
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rescan = true;
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break;
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case 'f':
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hints_file = optarg;
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break;
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case 'i':
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insecure = true;
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break;
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case 'm':
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merge = true;
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break;
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case 'r':
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justread = true;
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break;
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case 's':
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/* was nostd */
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break;
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case 'v':
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verbose = true;
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break;
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default:
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usage();
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break;
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}
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}
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if (justread) {
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list_elf_hints(hints_file);
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} else {
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if (argc == optind)
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rescan = true;
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update_elf_hints(hints_file, argc - optind,
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argv + optind, merge || rescan);
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}
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exit(0);
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}
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static void
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usage(void)
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{
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fprintf(stderr,
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"usage: ldconfig [-32] [-elf] [-Rimrv] [-f hints_file] "
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"[directory | file ...]\n");
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exit(1);
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}
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