238 lines
6.4 KiB
C
238 lines
6.4 KiB
C
/* $NetBSD: ldd.c,v 1.23 2017/12/25 05:08:49 maya Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Paul Kranenburg.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``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 FOUNDATION OR CONTRIBUTORS
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* Copyright 1996 John D. Polstra.
|
|
* Copyright 1996 Matt Thomas <matt@3am-software.com>
|
|
* 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 John Polstra.
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
__RCSID("$NetBSD: ldd.c,v 1.23 2017/12/25 05:08:49 maya Exp $");
|
|
#endif /* not lint */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/wait.h>
|
|
|
|
#include <dirent.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <ctype.h>
|
|
|
|
#include "debug.h"
|
|
#include "rtld.h"
|
|
#include "ldd.h"
|
|
|
|
/*
|
|
* Data declarations.
|
|
*/
|
|
static char *error_message; /* Message for dlopen(), or NULL */
|
|
bool _rtld_trust; /* False for setuid and setgid programs */
|
|
/*
|
|
* This may be ELF64 or ELF32 but since they are used opaquely it doesn't
|
|
* really matter.
|
|
*/
|
|
Obj_Entry *_rtld_objlist; /* Head of linked list of shared objects */
|
|
Obj_Entry **_rtld_objtail = &_rtld_objlist;
|
|
/* Link field of last object in list */
|
|
u_int _rtld_objcount; /* Number of shared objects */
|
|
u_int _rtld_objloads; /* Number of objects loaded */
|
|
|
|
Obj_Entry *_rtld_objmain; /* The main program shared object */
|
|
size_t _rtld_pagesz;
|
|
|
|
Search_Path *_rtld_default_paths;
|
|
Search_Path *_rtld_paths;
|
|
Library_Xform *_rtld_xforms;
|
|
|
|
static void usage(void) __dead;
|
|
char *main_local;
|
|
char *main_progname;
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr, "Usage: %s [-f <format 1>] [-f <format 2>] <filename>"
|
|
" ...\n", getprogname());
|
|
exit(1);
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
const char *fmt1 = NULL, *fmt2 = NULL;
|
|
int c, exit_status = EXIT_SUCCESS;
|
|
|
|
#ifdef DEBUG
|
|
debug = 1;
|
|
#endif
|
|
while ((c = getopt(argc, argv, "f:o")) != -1) {
|
|
switch (c) {
|
|
case 'f':
|
|
if (fmt1) {
|
|
if (fmt2)
|
|
errx(1, "Too many formats");
|
|
fmt2 = optarg;
|
|
} else
|
|
fmt1 = optarg;
|
|
break;
|
|
case 'o':
|
|
if (fmt1 || fmt2)
|
|
errx(1, "Cannot use -o and -f together");
|
|
fmt1 = "%a:-l%o.%m => %p\n";
|
|
break;
|
|
default:
|
|
usage();
|
|
/*NOTREACHED*/
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc <= 0) {
|
|
usage();
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
for (; argc != 0; argc--, argv++) {
|
|
int fd;
|
|
|
|
fd = open(*argv, O_RDONLY);
|
|
if (fd == -1) {
|
|
exit_status = EXIT_FAILURE;
|
|
warn("%s", *argv);
|
|
continue;
|
|
}
|
|
if (elf_ldd(fd, *argv, fmt1, fmt2) == -1
|
|
/* Alpha never had 32 bit support. */
|
|
#if (defined(_LP64) && !defined(ELF64_ONLY)) || defined(MIPS_N32)
|
|
&& elf32_ldd(fd, *argv, fmt1, fmt2) == -1
|
|
#if defined(__mips__) && 0 /* XXX this is still hosed for some reason */
|
|
&& elf32_ldd_compat(fd, *argv, fmt1, fmt2) == -1
|
|
#endif
|
|
#endif
|
|
) {
|
|
exit_status = EXIT_FAILURE;
|
|
warnx("%s", error_message);
|
|
}
|
|
close(fd);
|
|
}
|
|
|
|
return exit_status;
|
|
}
|
|
|
|
/*
|
|
* Error reporting function. Use it like printf. If formats the message
|
|
* into a buffer, and sets things up so that the next call to dlerror()
|
|
* will return the message.
|
|
*/
|
|
void
|
|
_rtld_error(const char *fmt, ...)
|
|
{
|
|
static char buf[512];
|
|
va_list ap;
|
|
va_start(ap, fmt);
|
|
xvsnprintf(buf, sizeof buf, fmt, ap);
|
|
error_message = buf;
|
|
va_end(ap);
|
|
}
|
|
|
|
char *
|
|
dlerror()
|
|
{
|
|
char *msg = error_message;
|
|
error_message = NULL;
|
|
return msg;
|
|
}
|
|
|
|
void
|
|
_rtld_die(void)
|
|
{
|
|
const char *msg = dlerror();
|
|
|
|
if (msg == NULL)
|
|
msg = "Fatal error";
|
|
xerrx(1, "%s", msg);
|
|
}
|
|
|
|
void
|
|
_rtld_shared_enter(void)
|
|
{
|
|
}
|
|
|
|
void
|
|
_rtld_shared_exit(void)
|
|
{
|
|
}
|
|
|
|
void
|
|
_rtld_exclusive_enter(sigset_t *mask)
|
|
{
|
|
}
|
|
|
|
void
|
|
_rtld_exclusive_exit(sigset_t *mask)
|
|
{
|
|
}
|