| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <unistd.h> |
| #include <dlfcn.h> |
| |
| /* |
| * NOTE: Since no one is really interested in correct unload behavior I've |
| * disabled the shared library unload check. If you want to reenable it comment |
| * the following line out |
| */ |
| #define NO_UNLOAD_CHECK |
| |
| static const char *pprog_name = "checkdll"; |
| static const char *psymbol = "GetVersionInfo"; |
| |
| void usage() |
| { |
| fprintf(stderr, "usage: %s [-s] <dllname>\n", pprog_name); |
| return; |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| int rc; |
| int silent=0; |
| void *phandle; |
| char *(*pfun)(void); |
| |
| if ( argc < 2 || argc > 4) { |
| usage(); |
| return 1; |
| } |
| |
| if ( !strcmp(argv[1],"-s") ) { |
| silent = 1; |
| ++argv, --argc; |
| } |
| |
| if ( (rc = access( argv[1], R_OK )) == -1 ) { |
| fprintf(stderr, "%s: ERROR: %s: %s\n", |
| pprog_name, argv[1], strerror(errno)); |
| return 2; |
| } |
| |
| if (!silent) printf("Checking DLL %s ...", argv[1]); |
| fflush(stdout); |
| |
| if ( (phandle = dlopen(argv[1], RTLD_NOW)) != NULL ) { |
| if ( (pfun = (char *(*)(void))dlsym(phandle, psymbol)) != NULL ) { |
| if (!silent) printf(": ok\n"); |
| } |
| else |
| { |
| printf(": WARNING: %s\n", dlerror()); |
| } |
| #ifdef NO_UNLOAD_CHECK |
| _exit(0); |
| #else |
| dlclose(phandle); |
| #endif |
| return 0; |
| } |
| |
| printf(": ERROR: %s\n", dlerror()); |
| return 3; |
| } |
| |
| |