/* * Dynamic loading with dl{open,close,sym}() functions. * Copyright (c) 1998 New Generation Software (NGS) Oy * * Author: Markku Rossi <mtr@ngs.fi> */ /* * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the Free * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, * MA 02111-1307, USA */ /* * $Source: /tmp/cvsroot-15-2-2007/clamav-devel/libclamav/js/dl_open.c,v $ * $Id: dl_open.c,v 1.2 2006/10/28 11:27:44 njh Exp $ */ #if HAVE_CONFIG_H #include "clamav-config.h" #endif #ifdef CL_EXPERIMENTAL #include "jsint.h" #include <dlfcn.h> /* * Global functions. */ void * js_dl_open (const char *filename, char *error_return, unsigned int error_return_len) { void *lib = dlopen (filename, RTLD_NOW); if (lib == NULL) { const char *msg = dlerror (); unsigned int msg_len; msg_len = strlen (msg); if (msg_len > error_return_len - 1) msg_len = error_return_len - 1; memcpy (error_return, msg, msg_len); error_return[msg_len] = '\0'; } return lib; } void * js_dl_sym (void *library, char *symbol, char *error_return, unsigned int error_return_len) { void *sym = dlsym (library, symbol); if (sym == NULL) { const char *msg = dlerror (); unsigned int msg_len; msg_len = strlen (msg); if (msg_len > error_return_len - 1) msg_len = error_return_len - 1; memcpy (error_return, msg, msg_len); error_return[msg_len] = '\0'; } return sym; } #endif /*CL_EXPERIMENTAL*/