libc
/* $Id$ */
/* Copyright (c) 2012 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS System libc */
/* 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 COPYRIGHT HOLDERS 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 COPYRIGHT
* HOLDER 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. */
#include <dlfcn.h>
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
#include "../src/dl/dlfcn.c"
/* dlfcn */
/* private */
/* functions */
static int _dlfcn(char const * progname, char const * title,
char const * soname)
{
int ret = 0;
void * handle;
int * p;
pid_t (*g)(void);
printf("%s: Testing %s\n", progname, title);
if((handle = dlopen(soname, RTLD_LAZY)) == NULL)
{
printf("%s: %s\n", progname, dlerror());
return -1;
}
/* checking the value of a known variable */
printf("%s: Testing %s, %s\n", progname, title, "dlsym() (1/2)");
if((p = dlsym(handle, "errno")) == NULL)
{
printf("%s: %s\n", progname, dlerror());
ret++;
}
else if((soname != NULL && *p != 0)
|| (soname == NULL && p != &errno))
{
printf("%s: errno: Wrong value\n", progname);
ret++;
}
/* calling a simple syscall */
printf("%s: Testing %s, %s\n", progname, title, "dlsym() (2/2)");
if((g = dlsym(handle, "getpid")) == NULL)
{
printf("%s: %s\n", progname, dlerror());
ret++;
}
else if((soname != NULL && getpid() != g())
|| (soname == NULL && getpid != (void *)p))
{
printf("%s: getpid(): Wrong value\n", progname);
ret++;
}
dlclose(handle);
return ret;
}
/* public */
/* functions */
int main(int argc, char * argv[])
{
int ret = 0;
char const * soname = argv[0];
if(argc == 2)
soname = argv[1];
ret |= _dlfcn(argv[0], "dlopen() (1/2)", soname);
ret |= _dlfcn(argv[0], "dlopen() (2/2)", NULL);
return (ret == 0) ? 0 : 2;
}