1 /* $OpenBSD: main.c,v 1.1 2005/09/19 21:50:27 drahn Exp $ */ 2 3 /* 4 * Copyright (c) 2005 Kurt Miller <kurt@openbsd.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <dlfcn.h> 20 #include <stdio.h> 21 22 int mainSymbol; 23 24 int 25 main() 26 { 27 int ret = 1; 28 void *libbb; 29 void *libcc; 30 void *bbsym; 31 void *ccsym; 32 void *a_sym; 33 34 35 libbb = dlopen("libbb.so", RTLD_LAZY|RTLD_GLOBAL); 36 if (libbb == NULL) { 37 printf("dlopen(\"libbb.so\", RTLD_LAZY) FAILED\n"); 38 return (1); 39 } 40 41 libcc = dlopen("libcc.so", RTLD_LAZY|RTLD_GLOBAL); 42 if (libcc == NULL) { 43 printf("dlopen(\"libcc.so\", RTLD_LAZY) FAILED\n"); 44 return (1); 45 } 46 47 bbsym = dlsym(libbb, "commonSymbol"); 48 ccsym = dlsym(libcc, "commonSymbol"); 49 a_sym = dlsym(RTLD_DEFAULT, "commonSymbol"); 50 51 if(a_sym == bbsym) { 52 ret = 0; 53 } 54 if(a_sym == ccsym) { 55 printf("found common symbol in libcc incorrect location\n"); 56 ret = 1; 57 } 58 59 dlclose(libbb); 60 dlclose(libcc); 61 62 return (ret); 63 } 64