157 lines
3.7 KiB
C
157 lines
3.7 KiB
C
/* $NetBSD: ldd.c,v 1.20 2008/04/28 20:24:14 martin Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Paul Kranenburg.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/file.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <sys/wait.h>
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#include <a.out.h>
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#include <err.h>
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#include <fcntl.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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int main __P((int, char *[]));
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void usage __P((void));
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void
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usage()
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{
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fprintf(stderr, "Usage: %s [-f <format 1>] [-f <format 2>] <filename>"
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" ...\n", getprogname());
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exit(1);
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}
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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char *fmt1 = NULL, *fmt2 = NULL;
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int rval;
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int c;
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while ((c = getopt(argc, argv, "f:")) != -1) {
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switch (c) {
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case 'f':
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if (fmt1) {
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if (fmt2)
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errx(1, "Too many formats");
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fmt2 = optarg;
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} else
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fmt1 = optarg;
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break;
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default:
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usage();
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/*NOTREACHED*/
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}
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}
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argc -= optind;
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argv += optind;
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if (argc <= 0) {
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usage();
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/*NOTREACHED*/
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}
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/* ld.so magic */
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setenv("LD_TRACE_LOADED_OBJECTS", "", 1);
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if (fmt1)
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setenv("LD_TRACE_LOADED_OBJECTS_FMT1", fmt1, 1);
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if (fmt2)
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setenv("LD_TRACE_LOADED_OBJECTS_FMT2", fmt2, 1);
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rval = 0;
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while (argc--) {
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int fd;
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struct exec hdr;
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int status;
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if ((fd = open(*argv, O_RDONLY, 0)) < 0) {
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warn("%s", *argv);
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rval |= 1;
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argv++;
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continue;
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}
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if (read(fd, &hdr, sizeof hdr) != sizeof hdr
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|| (N_GETFLAG(hdr) & EX_DPMASK) != EX_DYNAMIC
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#if 1 /* Compatibility */
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|| hdr.a_entry < N_PAGSIZ(hdr)
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#endif
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) {
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warnx("%s: not a dynamic executable", *argv);
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(void)close(fd);
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rval |= 1;
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argv++;
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continue;
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}
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(void)close(fd);
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setenv("LD_TRACE_LOADED_OBJECTS_PROGNAME", *argv, 1);
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if (fmt1 == NULL && fmt2 == NULL)
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/* Default formats */
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printf("%s:\n", *argv);
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fflush(stdout);
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switch (fork()) {
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case -1:
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err(1, "fork");
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break;
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default:
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if (wait(&status) <= 0) {
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warn("wait");
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rval |= 1;
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} else if (WIFSIGNALED(status)) {
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fprintf(stderr, "%s: signal %d\n",
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*argv, WTERMSIG(status));
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rval |= 1;
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} else if (WIFEXITED(status) && WEXITSTATUS(status)) {
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fprintf(stderr, "%s: exit status %d\n",
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*argv, WEXITSTATUS(status));
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rval |= 1;
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}
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break;
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case 0:
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rval |= execl(*argv, *argv, NULL) != 0;
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perror(*argv);
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_exit(1);
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}
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argv++;
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}
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return rval;
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}
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