kc3-lang/dlfcn-win32/test.c
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Hash : e16a6e8e
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Date : 2014-02-10T03:46:33
test: add trying to load nonexistent symbols test
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test.c
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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 #define RUNFUNC do { \ ret = function (); \ if( ret != 0) { \ CLOSE_LIB; \ CLOSE_GLOBAL; \ RETURN_ERROR; \ } \ } while( 0 ) /* 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 nonexistent symbol from library through library object <- fails * - Get symbol from library through global object <- works * - Run function if it worked * - Get nonexistent symbol from library through global object <- fails * - Close library * - Open library with RTLD_LOCAL * - Get symbol from library through library object <- works * - Run function if it worked * - Get nonexistent symbol from library through library object <- fails * - Get local symbol from library through global object <- fails * - Get nonexistent local symbol from library through global object <- fails * - Open library again (without closing it first) with RTLD_GLOBAL * - Get symbol from library through global object <- works * - Get nonexistent symbol from library through global object <- fails * - Close library * - Close global object * * If one test fails, the program terminates itself. */ int main() { void *global; void *library; char *error; int (*function)( void ); int (*nonexistentfunction)( void ); int ret; library = dlopen( "testdll.dll", RTLD_GLOBAL ); if( !library ) { error = dlerror( ); printf( "ERROR\tCould not open library globally: %s\n", error ? error : "" ); RETURN_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 ); RUNFUNC; nonexistentfunction = dlsym( library, "nonexistentfunction" ); if( nonexistentfunction ) { error = dlerror( ); printf( "ERROR\tGot nonexistent symbol from library handle: %p\n", nonexistentfunction ); CLOSE_LIB; CLOSE_GLOBAL; RETURN_ERROR; } else { error = dlerror( ); printf( "SUCCESS\tCould not get nonexistent symbol from library handle: %s\n", error ? error : "" ); } 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 ); RUNFUNC; nonexistentfunction = dlsym( global, "nonexistentfunction" ); if( nonexistentfunction ) { error = dlerror( ); printf( "ERROR\tGot nonexistent symbol from global handle: %p\n", nonexistentfunction ); CLOSE_LIB; CLOSE_GLOBAL; RETURN_ERROR; } else { error = dlerror( ); printf( "SUCCESS\tCould not get nonexistent symbol from global handle: %s\n", error ? error : "" ); } 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 ); RUNFUNC; nonexistentfunction = dlsym( library, "nonexistentfunction" ); if( nonexistentfunction ) { error = dlerror( ); printf( "ERROR\tGot nonexistent symbol from library handle: %p\n", nonexistentfunction ); CLOSE_LIB; CLOSE_GLOBAL; RETURN_ERROR; } else { error = dlerror( ); printf( "SUCCESS\tCould not get nonexistent symbol from library handle: %s\n", error ? error : "" ); } function = dlsym( global, "function" ); if( function ) { error = dlerror( ); printf( "ERROR\tGot local symbol from global handle: %s @ %p\n", error ? error : "", function ); CLOSE_LIB; CLOSE_GLOBAL; RETURN_ERROR; } else printf( "SUCCESS\tDid not get local symbol from global handle.\n" ); nonexistentfunction = dlsym( global, "nonexistentfunction" ); if( nonexistentfunction ) { error = dlerror( ); printf( "ERROR\tGot nonexistent local symbol from global handle: %p\n", nonexistentfunction ); CLOSE_LIB; CLOSE_GLOBAL; RETURN_ERROR; } else { error = dlerror( ); printf( "SUCCESS\tDid not get nonexistent local symbol from global handle: %s\n", error ? error : "" ); } library = dlopen( "testdll.dll", RTLD_GLOBAL ); if( !library ) { error = dlerror( ); printf( "ERROR\tCould not open library globally without closing it first: %s\n", error ? error : "" ); CLOSE_LIB; CLOSE_GLOBAL; RETURN_ERROR; } else printf( "SUCCESS\tOpened library globally without closing it first: %p\n", library ); 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 ); RUNFUNC; nonexistentfunction = dlsym( global, "nonexistentfunction" ); if( nonexistentfunction ) { error = dlerror( ); printf( "ERROR\tGot nonexistent symbol from global handle: %p\n", nonexistentfunction ); CLOSE_LIB; CLOSE_GLOBAL; RETURN_ERROR; } else { error = dlerror( ); printf( "SUCCESS\tCould not get nonexistent symbol from global handle: %s\n", error ? error : "" ); } 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; }