minix/usr.bin/ldd/ldd_elfxx.c
Ben Gras 4b999f1962 build shared versions of libraries
building defaults to off until clang is updated.

current clang does not handle -shared, necessary to change the ld
invocation to build shared libraries properly. a new clang should be
installed and MKPIC defaults to no unless the newer clang is detected.

changes:

	. mainly small imports of a Makefile or two and small fixes
	  (turning things back on that were turned off in Makefiles)
	. e.g.: dynamic librefuse now depends on dynamic
	  libpuffs, so libpuffs has to be built dynamically too
	  and a make dependency barrier is needed in lib/Makefile
	. all library objects now have a PIC (for .so) and non-PIC
	  version, so everything is built twice.
	. generate PIC versions of the compat (un-RENAMEd) jump files,
	  include function type annotation in generated assembly
	. build progs with -static by default for now
	. also build ld.elf_so
	. also import NetBSD ldd
2012-04-16 05:21:20 +02:00

162 lines
5.6 KiB
C

/* $NetBSD: ldd_elfxx.c,v 1.4 2009/09/07 04:49:03 dholland 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_elfxx.c,v 1.4 2009/09/07 04:49:03 dholland 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"
#define munmap minix_munmap
/*
* elfxx_ldd() - bit-size independant ELF ldd implementation.
* returns 0 on success and -1 on failure.
*/
int
ELFNAME(ldd)(int fd, char *path, const char *fmt1, const char *fmt2)
{
struct stat st;
if (lseek(fd, 0, SEEK_SET) < 0 ||
fstat(fd, &st) < 0) {
_rtld_error("%s: %s", path, strerror(errno));
return -1;
}
_rtld_pagesz = sysconf(_SC_PAGESIZE);
#ifdef RTLD_ARCH_SUBDIR
_rtld_add_paths(path, &_rtld_default_paths,
RTLD_DEFAULT_LIBRARY_PATH "/" RTLD_ARCH_SUBDIR);
#endif
_rtld_add_paths(path, &_rtld_default_paths, RTLD_DEFAULT_LIBRARY_PATH);
_rtld_paths = NULL;
_rtld_trust = (st.st_mode & (S_ISUID | S_ISGID)) == 0;
if (_rtld_trust)
_rtld_add_paths(path, &_rtld_paths, getenv("LD_LIBRARY_PATH"));
_rtld_process_hints(path, &_rtld_paths, &_rtld_xforms, _PATH_LD_HINTS);
_rtld_objmain = _rtld_map_object(xstrdup(path), fd, &st);
if (_rtld_objmain == NULL)
return -1;
_rtld_objmain->path = xstrdup(path);
_rtld_digest_dynamic(path, _rtld_objmain);
/* Link the main program into the list of objects. */
*_rtld_objtail = _rtld_objmain;
_rtld_objtail = &_rtld_objmain->next;
++_rtld_objmain->refcount;
(void) _rtld_load_needed_objects(_rtld_objmain, 0);
if (fmt1 == NULL)
printf("%s:\n", _rtld_objmain->path);
main_local = path;
main_progname = _rtld_objmain->path;
print_needed(_rtld_objmain, fmt1, fmt2);
while (_rtld_objlist != NULL) {
Obj_Entry *obj = _rtld_objlist;
_rtld_objlist = obj->next;
while (obj->rpaths != NULL) {
const Search_Path *rpath = obj->rpaths;
obj->rpaths = rpath->sp_next;
xfree(__UNCONST(rpath->sp_path));
xfree(__UNCONST(rpath));
}
while (obj->needed != NULL) {
const Needed_Entry *needed = obj->needed;
obj->needed = needed->next;
xfree(__UNCONST(needed));
}
(void) munmap(obj->mapbase, obj->mapsize);
xfree(obj->path);
xfree(obj);
}
_rtld_objmain = NULL;
_rtld_objtail = &_rtld_objlist;
/* Need to free _rtld_paths? */
return 0;
}