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/*
* Copyright (c) 1993 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.
*
* $Id: ldd.c,v 1.3 1994/02/13 20:42:43 jkh Exp $
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/file.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <a.out.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
void
usage()
{
extern char *__progname;
fprintf(stderr, "Usage: %s <filename> ...\n", __progname);
exit(1);
}
int
main(argc, argv)
int argc;
char *argv[];
{
int rval;
int c;
while ((c = getopt(argc, argv, "")) != EOF) {
switch (c) {
default:
usage();
/*NOTREACHED*/
}
}
argc -= optind;
argv += optind;
if (argc <= 0) {
usage();
/*NOTREACHED*/
}
/* ld.so magic */
setenv("LD_TRACE_LOADED_OBJECTS", "", 1);
rval = 0;
while (argc--) {
int fd;
struct exec hdr;
int status;
if ((fd = open(*argv, O_RDONLY, 0)) < 0) {
warn("%s", *argv);
rval |= 1;
argv++;
continue;
}
if (read(fd, &hdr, sizeof hdr) != sizeof hdr ||
!(N_GETFLAG(hdr) & EX_DYNAMIC) ||
hdr.a_entry < __LDPGSZ) {
warnx("%s: not a dynamic executable", *argv);
(void)close(fd);
rval |= 1;
argv++;
continue;
}
(void)close(fd);
printf("%s:\n", *argv);
fflush(stdout);
switch (fork()) {
case -1:
err(1, "fork");
break;
default:
if (wait(&status) <= 0) {
warn("wait");
rval |= 1;
} else if (WIFSIGNALED(status)) {
fprintf(stderr, "%s: signal %d\n",
*argv, WTERMSIG(status));
rval |= 1;
} else if (WIFEXITED(status) && WEXITSTATUS(status)) {
fprintf(stderr, "%s: exit status %d\n",
*argv, WEXITSTATUS(status));
rval |= 1;
}
break;
case 0:
rval |= execl(*argv, *argv, NULL) != 0;
perror(*argv);
_exit(1);
}
argv++;
}
return rval;
}
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