141 lines
4.0 KiB
C
141 lines
4.0 KiB
C
/* $NetBSD: ldd_aout.c,v 1.2 2009/01/11 00:06:55 mrg Exp $ */
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/*-
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* Copyright (c) 1998, 2000 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/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: ldd_aout.c,v 1.2 2009/01/11 00:06:55 mrg Exp $");
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#endif /* not lint */
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#include <sys/types.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 <errno.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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/* from <compat/netbsd32/netbsd32_exec.h> */
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/*
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* Header prepended to each a.out file.
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* only manipulate the a_midmag field via the
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* N_SETMAGIC/N_GET{MAGIC,MID,FLAG} macros below.
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*/
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typedef unsigned int netbsd32_u_long;
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struct netbsd32_exec {
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netbsd32_u_long a_midmag; /* htonl(flags<<26 | mid<<16 | magic) */
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netbsd32_u_long a_text; /* text segment size */
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netbsd32_u_long a_data; /* initialized data size */
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netbsd32_u_long a_bss; /* uninitialized data size */
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netbsd32_u_long a_syms; /* symbol table size */
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netbsd32_u_long a_entry; /* entry point */
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netbsd32_u_long a_trsize; /* text relocation size */
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netbsd32_u_long a_drsize; /* data relocation size */
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};
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/*
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* XXX put this here, rather than a separate ldd_aout.h
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#include "ldd.h"
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*/
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int aout_ldd(char *, char *, char *);
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int
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aout_ldd(char *file, char *fmt1, char *fmt2)
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{
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struct stat st;
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struct netbsd32_exec hdr;
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int status, rval;
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int fd;
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fd = open(file, O_RDONLY);
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if (fd == -1) {
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warn("%s", file);
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return -1;
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}
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if (fstat(fd, &st) < 0) {
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warn("%s", file);
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close(fd);
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return -1;
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}
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lseek(fd, 0, SEEK_SET);
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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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/* calling function prints warning */
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return -1;
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}
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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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setenv("LD_TRACE_LOADED_OBJECTS_PROGNAME", file, 1);
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if (fmt1 == NULL && fmt2 == NULL)
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printf("%s:\n", file);
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fflush(stdout);
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rval = 0;
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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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file, 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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file, 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(file, file, NULL) != 0;
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perror(file);
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_exit(1);
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}
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return rval;
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}
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