4b999f1962
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
162 lines
5.6 KiB
C
162 lines
5.6 KiB
C
/* $NetBSD: ldd_elfxx.c,v 1.4 2009/09/07 04:49:03 dholland 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_elfxx.c,v 1.4 2009/09/07 04:49:03 dholland 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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#define munmap minix_munmap
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/*
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* elfxx_ldd() - bit-size independant ELF ldd implementation.
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* returns 0 on success and -1 on failure.
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*/
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int
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ELFNAME(ldd)(int fd, char *path, const char *fmt1, const char *fmt2)
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{
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struct stat st;
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if (lseek(fd, 0, SEEK_SET) < 0 ||
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fstat(fd, &st) < 0) {
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_rtld_error("%s: %s", path, strerror(errno));
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return -1;
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}
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_rtld_pagesz = sysconf(_SC_PAGESIZE);
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#ifdef RTLD_ARCH_SUBDIR
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_rtld_add_paths(path, &_rtld_default_paths,
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RTLD_DEFAULT_LIBRARY_PATH "/" RTLD_ARCH_SUBDIR);
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#endif
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_rtld_add_paths(path, &_rtld_default_paths, RTLD_DEFAULT_LIBRARY_PATH);
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_rtld_paths = NULL;
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_rtld_trust = (st.st_mode & (S_ISUID | S_ISGID)) == 0;
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if (_rtld_trust)
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_rtld_add_paths(path, &_rtld_paths, getenv("LD_LIBRARY_PATH"));
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_rtld_process_hints(path, &_rtld_paths, &_rtld_xforms, _PATH_LD_HINTS);
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_rtld_objmain = _rtld_map_object(xstrdup(path), fd, &st);
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if (_rtld_objmain == NULL)
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return -1;
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_rtld_objmain->path = xstrdup(path);
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_rtld_digest_dynamic(path, _rtld_objmain);
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/* Link the main program into the list of objects. */
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*_rtld_objtail = _rtld_objmain;
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_rtld_objtail = &_rtld_objmain->next;
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++_rtld_objmain->refcount;
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(void) _rtld_load_needed_objects(_rtld_objmain, 0);
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if (fmt1 == NULL)
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printf("%s:\n", _rtld_objmain->path);
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main_local = path;
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main_progname = _rtld_objmain->path;
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print_needed(_rtld_objmain, fmt1, fmt2);
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while (_rtld_objlist != NULL) {
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Obj_Entry *obj = _rtld_objlist;
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_rtld_objlist = obj->next;
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while (obj->rpaths != NULL) {
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const Search_Path *rpath = obj->rpaths;
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obj->rpaths = rpath->sp_next;
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xfree(__UNCONST(rpath->sp_path));
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xfree(__UNCONST(rpath));
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}
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while (obj->needed != NULL) {
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const Needed_Entry *needed = obj->needed;
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obj->needed = needed->next;
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xfree(__UNCONST(needed));
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}
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(void) munmap(obj->mapbase, obj->mapsize);
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xfree(obj->path);
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xfree(obj);
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}
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_rtld_objmain = NULL;
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_rtld_objtail = &_rtld_objlist;
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/* Need to free _rtld_paths? */
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return 0;
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}
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