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Diffstat (limited to 'test.c')
| -rw-r--r-- | test.c | 157 |
1 files changed, 157 insertions, 0 deletions
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| 1 | /* | ||
| 2 | * dlfcn-win32 | ||
| 3 | * Copyright (c) 2007 Ramiro Polla | ||
| 4 | * | ||
| 5 | * This library is free software; you can redistribute it and/or | ||
| 6 | * modify it under the terms of the GNU Lesser General Public | ||
| 7 | * License as published by the Free Software Foundation; either | ||
| 8 | * version 2.1 of the License, or (at your option) any later version. | ||
| 9 | * | ||
| 10 | * This library is distributed in the hope that it will be useful, | ||
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 13 | * Lesser General Public License for more details. | ||
| 14 | * | ||
| 15 | * You should have received a copy of the GNU Lesser General Public | ||
| 16 | * License along with this library; if not, write to the Free Software | ||
| 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 18 | */ | ||
| 19 | |||
| 20 | #include <stdio.h> | ||
| 21 | #include "dlfcn.h" | ||
| 22 | |||
| 23 | /* This is what this test does: | ||
| 24 | * - Open library with RTLD_GLOBAL | ||
| 25 | * - Get global object | ||
| 26 | * - Get symbol from library through library object <- works | ||
| 27 | * - Run function if it worked | ||
| 28 | * - Get symbol from library through global object <- works | ||
| 29 | * - Run function if it worked | ||
| 30 | * - Close library | ||
| 31 | * - Open library with RTLD_LOCAL | ||
| 32 | * - Get symbol from library through library object <- works | ||
| 33 | * - Run function if it worked | ||
| 34 | * - Get symbol from library through global object <- fails | ||
| 35 | * - Run function if it worked | ||
| 36 | * - Open library again (without closing it first) with RTLD_GLOBAL | ||
| 37 | * - Get symbol from library through global object <- works | ||
| 38 | * - Close library | ||
| 39 | * - Close global object | ||
| 40 | */ | ||
| 41 | |||
| 42 | int main() | ||
| 43 | { | ||
| 44 | void *global; | ||
| 45 | void *library; | ||
| 46 | char *error; | ||
| 47 | int (*function)( void ); | ||
| 48 | int ret; | ||
| 49 | |||
| 50 | library = dlopen( "testdll.dll", RTLD_GLOBAL ); | ||
| 51 | if( !library ) | ||
| 52 | { | ||
| 53 | error = dlerror( ); | ||
| 54 | printf( "Could not open library globally: %s\n", error ? error : "" ); | ||
| 55 | } | ||
| 56 | else | ||
| 57 | printf( "Opened library globally: %p\n", library ); | ||
| 58 | |||
| 59 | global = dlopen( 0, RTLD_GLOBAL ); | ||
| 60 | if( !global ) | ||
| 61 | { | ||
| 62 | error = dlerror( ); | ||
| 63 | printf( "Could not open global handle: %s\n", error ? error : "" ); | ||
| 64 | } | ||
| 65 | else | ||
| 66 | printf( "Got global handle: %p\n", global ); | ||
| 67 | |||
| 68 | function = dlsym( library, "function" ); | ||
| 69 | if( !function ) | ||
| 70 | { | ||
| 71 | error = dlerror( ); | ||
| 72 | printf( "Could not get symbol from library handle: %s\n", | ||
| 73 | error ? error : "" ); | ||
| 74 | } | ||
| 75 | else | ||
| 76 | printf( "Got symbol from library handle: %p\n", function ); | ||
| 77 | |||
| 78 | if( function ) | ||
| 79 | function( ); | ||
| 80 | |||
| 81 | function = dlsym( global, "function" ); | ||
| 82 | if( !function ) | ||
| 83 | { | ||
| 84 | error = dlerror( ); | ||
| 85 | printf( "Could not get symbol from global handle: %s\n", | ||
| 86 | error ? error : "" ); | ||
| 87 | } | ||
| 88 | else | ||
| 89 | printf( "Got symbol from global handle: %p\n", function ); | ||
| 90 | |||
| 91 | if( function ) | ||
| 92 | function( ); | ||
| 93 | |||
| 94 | ret = dlclose( library ); | ||
| 95 | if( ret ) | ||
| 96 | { | ||
| 97 | error = dlerror( ); | ||
| 98 | printf( "Could not close library: %s\n", error ? error : "" ); | ||
| 99 | } | ||
| 100 | else | ||
| 101 | printf( "Closed library.\n" ); | ||
| 102 | |||
| 103 | library = dlopen( "testdll.dll", RTLD_LOCAL ); | ||
| 104 | if( !library ) | ||
| 105 | { | ||
| 106 | error = dlerror( ); | ||
| 107 | printf( "Could not open library locally: %s\n", error ? error : "" ); | ||
| 108 | } | ||
| 109 | else | ||
| 110 | printf( "Opened library locally: %p\n", library ); | ||
| 111 | |||
| 112 | function = dlsym( library, "function" ); | ||
| 113 | if( !function ) | ||
| 114 | { | ||
| 115 | error = dlerror( ); | ||
| 116 | printf( "Could not get symbol from library handle: %s\n", | ||
| 117 | error ? error : "" ); | ||
| 118 | } | ||
| 119 | else | ||
| 120 | printf( "Got symbol from library handle: %p\n", function ); | ||
| 121 | |||
| 122 | if( function ) | ||
| 123 | function( ); | ||
| 124 | |||
| 125 | function = dlsym( global, "function" ); | ||
| 126 | if( !function ) | ||
| 127 | { | ||
| 128 | error = dlerror( ); | ||
| 129 | printf( "Could not get symbol from global handle: %s\n", | ||
| 130 | error ? error : "" ); | ||
| 131 | } | ||
| 132 | else | ||
| 133 | printf( "Got symbol from global handle: %p\n", function ); | ||
| 134 | |||
| 135 | if( function ) | ||
| 136 | function( ); | ||
| 137 | |||
| 138 | ret = dlclose( library ); | ||
| 139 | if( ret ) | ||
| 140 | { | ||
| 141 | error = dlerror( ); | ||
| 142 | printf( "Could not close library: %s\n", error ? error : "" ); | ||
| 143 | } | ||
| 144 | else | ||
| 145 | printf( "Closed library.\n" ); | ||
| 146 | |||
| 147 | ret = dlclose( global ); | ||
| 148 | if( ret ) | ||
| 149 | { | ||
| 150 | error = dlerror( ); | ||
| 151 | printf( "Could not close global handle: %s\n", error ? error : "" ); | ||
| 152 | } | ||
| 153 | else | ||
| 154 | printf( "Closed global handle.\n" ); | ||
| 155 | |||
| 156 | return 0; | ||
| 157 | } | ||