/* $OpenBSD: main.c,v 1.1 2005/09/19 21:50:27 drahn Exp $ */ /* * Copyright (c) 2005 Kurt Miller * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include int mainSymbol; int main() { int ret = 1; void *libbb; void *libcc; void *bbsym; void *ccsym; void *a_sym; libbb = dlopen("libbb.so", RTLD_LAZY|RTLD_GLOBAL); if (libbb == NULL) { printf("dlopen(\"libbb.so\", RTLD_LAZY) FAILED\n"); return (1); } libcc = dlopen("libcc.so", RTLD_LAZY|RTLD_GLOBAL); if (libcc == NULL) { printf("dlopen(\"libcc.so\", RTLD_LAZY) FAILED\n"); return (1); } bbsym = dlsym(libbb, "commonSymbol"); ccsym = dlsym(libcc, "commonSymbol"); a_sym = dlsym(RTLD_DEFAULT, "commonSymbol"); if(a_sym == bbsym) { ret = 0; } if(a_sym == ccsym) { printf("found common symbol in libcc incorrect location\n"); ret = 1; } dlclose(libbb); dlclose(libcc); return (ret); }