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/*
* Copyright (c) 1993 Eric Youngdale, Peter MacDonald, David Engel
* and Hongjiu Lu.
*
* 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. The name of the above contributors may not be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE 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 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.
*/
/* Notice of general intent:
*
* The linux operating system generally contains large amounts of code
* that fall under the GNU General Public License, or GPL for short.
* This file contains source code that by it's very nature would always
* be linked with an application program, and because of this a GPL type
* of copyright on this file would place restrictions upon the
* distribution of binary-only commercial software. Since the goal of the
* Linux project as a whole is not to discourage the development and
* distribution of commercial software for Linux, this file has been placed
* under a more relaxed BSD-style of copyright.
*
* It is the general understanding of the above contributors that a
* program executable linked to a library containing code that falls
* under the GPL or GLPL style of license is not subject to the terms of
* the GPL or GLPL license if the program executable(s) that are supplied
* are linked to a shared library form of the GPL or GLPL library, and as long
* as the form of the shared library is such that it is possible for
* the end user to modify and rebuild the library and use it in
* conjunction with the program executable.
*/
#include <unistd.h>
#include <syscall.h>
#include <stdarg.h>
#include <sharedlib.h>
#include <errno.h>
#include <sys/mman.h>
#include "config.h"
#include "fixups.h"
static int errno = 0;
static
_syscall1(int,exit,int,code)
static
_syscall1(int,uselib,const char *,filename)
static
_syscall3(ssize_t,write,int,fd,const void *,buf,size_t,count)
static
_syscall2(int,munmap,caddr_t,addr,size_t,len)
extern struct libentry * __SHARED_LIBRARIES__[];
extern struct fixuplist _SHARABLE_CONFLICTS__;
#if 0
/* This change seems not correct. H.J. */
#undef data_set_element
#include <gnu-stabs.h>
static const char const __shared_dummy__ = 0;
/* Magic number used by DLL code to make sure this is a real list. */
static unsigned int __shared_dummy1__ = 0xfeeb1ed3;
data_set_element (__SHARED_LIBRARIES__, __shared_dummy__);
data_set_element (_SHARABLE_CONFLICTS__, __shared_dummy1__);
#endif
void
__load_shared_libraries (int argc, char **argv, char **envp)
{
if (__SHARED_LIBRARIES__[2])
{
unsigned mapinfo[2];
/* this must be volatile to work with -O, GCC bug? */
volatile loadptr loader = (loadptr)LDSO_ADDR;
#ifdef LDSO_IMAGE1
if (uselib(LDSO_IMAGE) && uselib(LDSO_IMAGE1))
#else
if (uselib(LDSO_IMAGE))
#endif
{
char *p = argv[0];
#ifdef LDSO_IMAGE1
char errmsg[] = ": can't load dynamic linker '"
LDSO_IMAGE
" nor "
LDSO_IMAGE1
"'\n";
#else
char errmsg[] = ": can't load dynamic linker '" LDSO_IMAGE "'\n";
#endif
if (p)
{
while (*p) p++;
write(2, argv[0], p-argv[0]);
}
write(2, errmsg, sizeof errmsg - 1);
while (1) exit(128);
}
loader((argc <= 0) ? FUNC_LDD : FUNC_LINK, mapinfo, argv[0],
envp, __SHARED_LIBRARIES__, &_SHARABLE_CONFLICTS__);
munmap((caddr_t)mapinfo[0], mapinfo[1]);
}
else
{
char msg[] = "\tstatically linked\n";
if (argc<=0)
write (2, msg, sizeof msg - 1);
}
if (argc <= 0)
while (1) exit(0);
}
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