HardenedBSD/sbin/ldconfig/ldconfig.c
Ed Maste 50a40d0911 ldconfig: Retire a.out support
aout support in ldconfig hasn't been required since FreeBSD 2.x.
If someone needs to use FreeBSD 2 shared libraries they will be best
served by using a FreeBSD 2 ldconfig as well.

In aa5e1b42e6 we removed the ldconfig a.out invocation from rc.d but
left the support in ldconfig itself.  Remove it now.

Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D27481
2020-12-31 10:29:08 -05:00

156 lines
3.8 KiB
C

/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* Copyright (c) 1993,1995 Paul Kranenburg
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Paul Kranenburg.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/param.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <a.out.h>
#include <ctype.h>
#include <dirent.h>
#include <elf-hints.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "ldconfig.h"
#if DEBUG
/* test */
#undef _PATH_ELF_HINTS
#define _PATH_ELF_HINTS "./ld-elf.so.hints"
#endif
#define _PATH_LD32_HINTS "/var/run/ld32.so.hints"
#define _PATH_ELF32_HINTS "/var/run/ld-elf32.so.hints"
#define _PATH_ELFSOFT_HINTS "/var/run/ld-elf-soft.so.hints"
#undef major
#undef minor
static int verbose;
static int nostd;
static int justread;
static int merge;
static int rescan;
static const char *hints_file;
static void usage(void);
int
main(int argc, char **argv)
{
int c;
int is_32 = 0;
int is_soft = 0;
while (argc > 1) {
if (strcmp(argv[1], "-aout") == 0) {
errx(1, "aout is not supported");
} else if (strcmp(argv[1], "-elf") == 0) {
argc--;
argv++;
} else if (strcmp(argv[1], "-32") == 0) {
is_32 = 1;
argc--;
argv++;
} else if (strcmp(argv[1], "-soft") == 0) {
is_soft = 1;
argc--;
argv++;
} else {
break;
}
}
if (is_soft)
hints_file = _PATH_ELFSOFT_HINTS; /* Never will have a.out softfloat */
else if (is_32)
hints_file = _PATH_ELF32_HINTS;
else
hints_file = _PATH_ELF_HINTS;
if (argc == 1)
rescan = 1;
else while((c = getopt(argc, argv, "Rf:imrsv")) != -1) {
switch (c) {
case 'R':
rescan = 1;
break;
case 'f':
hints_file = optarg;
break;
case 'i':
insecure = 1;
break;
case 'm':
merge = 1;
break;
case 'r':
justread = 1;
break;
case 's':
nostd = 1;
break;
case 'v':
verbose = 1;
break;
default:
usage();
break;
}
}
if (justread)
list_elf_hints(hints_file);
else
update_elf_hints(hints_file, argc - optind,
argv + optind, merge || rescan);
return 0;
}
static void
usage(void)
{
fprintf(stderr,
"usage: ldconfig [-32] [-elf] [-Rimrsv] [-f hints_file] [directory | file ...]\n");
exit(1);
}