118 lines
2.3 KiB
C
118 lines
2.3 KiB
C
/*
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* libscdl.c: wrappers for dlfcn() interfaces
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*
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* Copyright (C) 2010 Martin Paljak <martin@martinpaljak.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#ifdef HAVE_LTDL_H
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#include <ltdl.h>
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/* libltdl is present, pass all calls to it */
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void *sc_dlopen(const char *filename)
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{
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return (void *)lt_dlopen(filename);
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}
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void *sc_dlsym(void *handle, const char *symbol)
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{
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return lt_dlsym((lt_dlhandle)handle, symbol);
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}
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const char *sc_dlerror()
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{
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return lt_dlerror();
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}
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int sc_dlclose(void *handle)
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{
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return lt_dlclose((lt_dlhandle)handle);
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}
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#else
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/* Small wrappers for native functions, bypassing libltdl */
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#ifdef _WIN32
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/* Use Windows calls */
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void *sc_dlopen(const char *filename)
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{
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return (void *)LoadLibrary(filename);
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}
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void *sc_dlsym(void *handle, const char *symbol)
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{
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return GetProcAddress(handle, symbol);
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}
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const char *sc_dlerror()
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{
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return "LoadLibrary/GetProcAddress failed";
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}
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int sc_dlclose(void *handle)
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{
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return FreeLibrary(handle);
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}
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#elif defined(HAVE_DLFCN_H)
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#include <dlfcn.h>
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/* Use native interfaces */
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void *sc_dlopen(const char *filename)
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{
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return (void *)dlopen(filename, RTLD_LAZY);
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}
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void *sc_dlsym(void *handle, const char *symbol)
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{
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return dlsym(handle, symbol);
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}
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const char *sc_dlerror()
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{
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return dlerror();
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}
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int sc_dlclose(void *handle)
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{
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return dlclose(handle);
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}
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#else
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/* Dynamic loading is not available */
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void *sc_dlopen(const char *filename)
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{
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return NULL;
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}
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void *sc_dlsym(void *handle, const char *symbol)
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{
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return NULL;
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}
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const char *sc_dlerror()
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{
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return "dlopen() functionality not available";
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}
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int sc_dlclose(void *handle)
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{
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return 0;
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}
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#endif
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#endif
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