3 sets of libraries are built now: . ack: all libraries that ack can compile (/usr/lib/i386/) . clang+elf: all libraries with minix headers (/usr/lib/) . clang+elf: all libraries with netbsd headers (/usr/netbsd/) Once everything can be compiled with netbsd libraries and headers, the /usr/netbsd hierarchy will be obsolete and its libraries compiled with netbsd headers will be installed in /usr/lib, and its headers in /usr/include. (i.e. minix libc and current minix headers set will be gone.) To use the NetBSD libc system (libraries + headers) before it is the default libc, see: http://wiki.minix3.org/en/DevelopersGuide/UsingNetBSDCode This wiki page also documents the maintenance of the patch files of minix-specific changes to imported NetBSD code. Changes in this commit: . libsys: Add NBSD compilation and create a safe NBSD-based libc. . Port rest of libraries (except libddekit) to new header system. . Enable compilation of libddekit with new headers. . Enable kernel compilation with new headers. . Enable drivers compilation with new headers. . Port legacy commands to new headers and libc. . Port servers to new headers. . Add <sys/sigcontext.h> in compat library. . Remove dependency file in tree. . Enable compilation of common/lib/libc/atomic in libsys . Do not generate RCSID strings in libc. . Temporarily disable zoneinfo as they are incompatible with NetBSD format . obj-nbsd for .gitignore . Procfs: use only integer arithmetic. (Antoine Leca) . Increase ramdisk size to create NBSD-based images. . Remove INCSYMLINKS handling hack. . Add nbsd_include/sys/exec_elf.h . Enable ELF compilation with NBSD libc. . Add 'make nbsdsrc' in tools to download reference NetBSD sources. . Automate minix-port.patch creation. . Avoid using fstavfs() as it is *extremely* slow and unneeded. . Set err() as PRIVATE to avoid name clash with libc. . [NBSD] servers/vm: remove compilation warnings. . u32 is not a long in NBSD headers. . UPDATING info on netbsd hierarchy . commands fixes for netbsd libc
145 lines
3.5 KiB
C
145 lines
3.5 KiB
C
/* $NetBSD: dlfcn_elf.c,v 1.7 2010/10/16 10:27:07 skrll Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2000 Takuya SHIOZAKI
|
|
* 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.
|
|
*
|
|
* 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>
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
__RCSID("$NetBSD: dlfcn_elf.c,v 1.7 2010/10/16 10:27:07 skrll Exp $");
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include "namespace.h"
|
|
|
|
#undef dlopen
|
|
#undef dlclose
|
|
#undef dlsym
|
|
#undef dlerror
|
|
#undef dladdr
|
|
#undef dfinfo
|
|
|
|
#define dlopen ___dlopen
|
|
#define dlclose ___dlclose
|
|
#define dlsym ___dlsym
|
|
#define dlerror ___dlerror
|
|
#define dladdr ___dladdr
|
|
#define dlinfo ___dlinfo
|
|
#define dl_iterate_phdr ___dl_iterate_phdr
|
|
|
|
#define ELFSIZE ARCH_ELFSIZE
|
|
#ifdef __minix
|
|
#include <sys/null.h>
|
|
#include <dlfcn.h>
|
|
#else
|
|
#include "rtld.h"
|
|
#endif
|
|
|
|
#ifdef __weak_alias
|
|
__weak_alias(dlopen,___dlopen)
|
|
__weak_alias(dlclose,___dlclose)
|
|
__weak_alias(dlsym,___dlsym)
|
|
__weak_alias(dlerror,___dlerror)
|
|
__weak_alias(dladdr,___dladdr)
|
|
__weak_alias(dlinfo,___dlinfo)
|
|
__weak_alias(dl_iterate_phdr,___dl_iterate_phdr)
|
|
|
|
__weak_alias(__dlopen,___dlopen)
|
|
__weak_alias(__dlclose,___dlclose)
|
|
__weak_alias(__dlsym,___dlsym)
|
|
__weak_alias(__dlerror,___dlerror)
|
|
__weak_alias(__dladdr,___dladdr)
|
|
__weak_alias(__dlinfo,___dlinfo)
|
|
__weak_alias(__dl_iterate_phdr,___dl_iterate_phdr)
|
|
#endif
|
|
|
|
/*
|
|
* For ELF, the dynamic linker directly resolves references to its
|
|
* services to functions inside the dynamic linker itself. These
|
|
* weak-symbol stubs are necessary so that "ld" won't complain about
|
|
* undefined symbols. The stubs are executed only when the program is
|
|
* linked statically, or when a given service isn't implemented in the
|
|
* dynamic linker. They must return an error if called, and they must
|
|
* be weak symbols so that the dynamic linker can override them.
|
|
*/
|
|
|
|
static char dlfcn_error[] = "Service unavailable";
|
|
|
|
/*ARGSUSED*/
|
|
void *
|
|
dlopen(const char *name, int mode)
|
|
{
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
int
|
|
dlclose(void *fd)
|
|
{
|
|
|
|
return -1;
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
void *
|
|
dlsym(void *handle, const char *name)
|
|
{
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
__aconst char *
|
|
dlerror()
|
|
{
|
|
|
|
return dlfcn_error;
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
int
|
|
dladdr(const void *addr, Dl_info *dli)
|
|
{
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
int
|
|
dlinfo(void *handle, int req, void *v)
|
|
{
|
|
|
|
return -1;
|
|
}
|
|
|
|
#ifndef __minix
|
|
/*ARGSUSED*/
|
|
int
|
|
dl_iterate_phdr(int (*callback)(struct dl_phdr_info *, size_t, void *),
|
|
void *data)
|
|
{
|
|
|
|
return 0;
|
|
}
|
|
#endif
|