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/*
* dlfcn-win32
* Copyright (c) 2007-2009 Ramiro Polla
* Copyright (c) 2014 Tiancheng "Timothy" Gu
*
* dlfcn-win32 is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* dlfcn-win32 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with dlfcn-win32; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include "dlfcn.h"
/* If these dlclose's fails, we don't care as the handles are going to be
closed eventually when the program ends. */
#define CLOSE_LIB dlclose( library );
#define CLOSE_GLOBAL dlclose( global );
#define RETURN_ERROR return 1;
/* This is what this test does:
* - Open library with RTLD_GLOBAL
* - Get global object
* - Get symbol from library through library object <- works
* - Run function if it worked
* - Get symbol from library through global object <- works
* - Run function if it worked
* - Close library
* - Open library with RTLD_LOCAL
* - Get symbol from library through library object <- works
* - Run function if it worked
* - Get symbol from library through global object <- fails
* - Run function if it worked
* - Open library again (without closing it first) with RTLD_GLOBAL
* - Get symbol from library through global object <- works
* - Close library
* - Close global object
*/
int main()
{
void *global;
void *library;
char *error;
int (*function)( void );
int ret;
library = dlopen( "testdll.dll", RTLD_GLOBAL );
if( !library )
{
error = dlerror( );
printf( "ERROR\tCould not open library globally: %s\n", error ? error : "" );
}
else
printf( "SUCCESS\tOpened library globally: %p\n", library );
global = dlopen( 0, RTLD_GLOBAL );
if( !global )
{
error = dlerror( );
printf( "ERROR\tCould not open global handle: %s\n", error ? error : "" );
CLOSE_LIB
RETURN_ERROR
}
else
printf( "SUCCESS\tGot global handle: %p\n", global );
function = dlsym( library, "function" );
if( !function )
{
error = dlerror( );
printf( "ERROR\tCould not get symbol from library handle: %s\n",
error ? error : "" );
CLOSE_LIB
CLOSE_GLOBAL
RETURN_ERROR
}
else
printf( "SUCCESS\tGot symbol from library handle: %p\n", function );
if( function )
function( );
function = dlsym( global, "function" );
if( !function )
{
error = dlerror( );
printf( "ERROR\tCould not get symbol from global handle: %s\n",
error ? error : "" );
CLOSE_LIB
CLOSE_GLOBAL
RETURN_ERROR
}
else
printf( "SUCCESS\tGot symbol from global handle: %p\n", function );
if( function )
function( );
ret = dlclose( library );
if( ret )
{
error = dlerror( );
printf( "ERROR\tCould not close library: %s\n", error ? error : "" );
RETURN_ERROR
}
else
printf( "SUCCESS\tClosed library.\n" );
library = dlopen( "testdll.dll", RTLD_LOCAL );
if( !library )
{
error = dlerror( );
printf( "ERROR\tCould not open library locally: %s\n", error ? error : "" );
CLOSE_LIB
CLOSE_GLOBAL
RETURN_ERROR
}
else
printf( "SUCCESS\tOpened library locally: %p\n", library );
function = dlsym( library, "function" );
if( !function )
{
error = dlerror( );
printf( "ERROR\tCould not get symbol from library handle: %s\n",
error ? error : "" );
CLOSE_LIB
CLOSE_GLOBAL
RETURN_ERROR
}
else
printf( "SUCCESS\tGot symbol from library handle: %p\n", function );
if( function )
function( );
function = dlsym( global, "function" );
if( function )
{
error = dlerror( );
printf( "ERROR\tGot local symbol from global handle: %s\n",
error ? error : "" );
CLOSE_LIB
CLOSE_GLOBAL
RETURN_ERROR
}
else
printf( "SUCCESS\tDid not get local symbol from global handle: %p\n", function );
if( function )
function( );
ret = dlclose( library );
if( ret )
{
error = dlerror( );
printf( "ERROR\tCould not close library: %s\n", error ? error : "" );
CLOSE_GLOBAL
RETURN_ERROR
}
else
printf( "SUCCESS\tClosed library.\n" );
ret = dlclose( global );
if( ret )
{
error = dlerror( );
printf( "ERROR\tCould not close global handle: %s\n", error ? error : "" );
RETURN_ERROR
}
else
printf( "SUCCESS\tClosed global handle.\n" );
return 0;
}
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