84d9c625bf
- Fix for possible unset uid/gid in toproto
- Fix for default mtree style
- Update libelf
- Importing libexecinfo
- Resynchronize GCC, mpc, gmp, mpfr
- build.sh: Replace params with show-params.
This has been done as the make target has been renamed in the same
way, while a new target named params has been added. This new
target generates a file containing all the parameters, instead of
printing it on the console.
- Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
get getservbyport() out of the inner loop
Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
235 lines
6.3 KiB
C
235 lines
6.3 KiB
C
/* $NetBSD: ldd.c,v 1.21 2013/03/20 15:18:42 macallan 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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/*
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* Copyright 1996 John D. Polstra.
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* Copyright 1996 Matt Thomas <matt@3am-software.com>
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* All rights reserved.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by John Polstra.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE 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.c,v 1.21 2013/03/20 15:18:42 macallan Exp $");
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <sys/wait.h>
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#include <dirent.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 <stdarg.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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#include <ctype.h>
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#include "debug.h"
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#include "rtld.h"
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#include "ldd.h"
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/*
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* Data declarations.
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*/
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static char *error_message; /* Message for dlopen(), or NULL */
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bool _rtld_trust; /* False for setuid and setgid programs */
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/*
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* This may be ELF64 or ELF32 but since they are used opaquely it doesn't
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* really matter.
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*/
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Obj_Entry *_rtld_objlist; /* Head of linked list of shared objects */
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Obj_Entry **_rtld_objtail = &_rtld_objlist;
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/* Link field of last object in list */
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u_int _rtld_objcount; /* Number of shared objects */
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u_int _rtld_objloads; /* Number of objects loaded */
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Obj_Entry *_rtld_objmain; /* The main program shared object */
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size_t _rtld_pagesz;
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Search_Path *_rtld_default_paths;
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Search_Path *_rtld_paths;
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Library_Xform *_rtld_xforms;
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static void usage(void) __dead;
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char *main_local;
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char *main_progname;
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static void
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usage(void)
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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(int argc, char **argv)
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{
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const char *fmt1 = NULL, *fmt2 = NULL;
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int c;
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#ifdef DEBUG
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debug = 1;
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#endif
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while ((c = getopt(argc, argv, "f:o")) != -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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case 'o':
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if (fmt1 || fmt2)
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errx(1, "Cannot use -o and -f together");
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fmt1 = "%a:-l%o.%m => %p\n";
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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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for (; argc != 0; argc--, argv++) {
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int fd;
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fd = open(*argv, O_RDONLY);
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if (fd == -1) {
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warn("%s", *argv);
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continue;
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}
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if (elf_ldd(fd, *argv, fmt1, fmt2) == -1
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/* Alpha never had 32 bit support. */
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#if (defined(_LP64) && !defined(__alpha__)) || defined(MIPS_N32)
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&& elf32_ldd(fd, *argv, fmt1, fmt2) == -1
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#if defined(__mips__) && 0 /* XXX this is still hosed for some reason */
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&& elf32_ldd_compat(fd, *argv, fmt1, fmt2) == -1
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#endif
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#endif
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)
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warnx("%s", error_message);
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close(fd);
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}
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return 0;
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}
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/*
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* Error reporting function. Use it like printf. If formats the message
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* into a buffer, and sets things up so that the next call to dlerror()
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* will return the message.
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*/
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void
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_rtld_error(const char *fmt, ...)
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{
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static char buf[512];
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va_list ap;
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va_start(ap, fmt);
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xvsnprintf(buf, sizeof buf, fmt, ap);
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error_message = buf;
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va_end(ap);
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}
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char *
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dlerror()
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{
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char *msg = error_message;
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error_message = NULL;
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return msg;
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}
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void
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_rtld_die(void)
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{
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const char *msg = dlerror();
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if (msg == NULL)
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msg = "Fatal error";
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xerrx(1, "%s", msg);
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}
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void
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_rtld_shared_enter(void)
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{
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}
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void
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_rtld_shared_exit(void)
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{
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}
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void
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_rtld_exclusive_enter(sigset_t *mask)
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{
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}
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void
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_rtld_exclusive_exit(sigset_t *mask)
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{
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}
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