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/*
* libmowgli: A collection of useful routines for programming.
* mowgli_module.c: Loadable modules for POSIX systems.
*
* Copyright (c) 2007 William Pitcock <nenolod -at- sacredspiral.co.uk>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice is present in all copies.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "mowgli.h"
#include <dlfcn.h>
#ifdef __OpenBSD__
# define RTLD_NOW RTLD_LAZY
#endif
#ifndef RTLD_LOCAL
#define RTLD_LOCAL 0
#endif
mowgli_module_t mowgli_module_open(const char *path)
{
void *handle = dlopen(path, RTLD_NOW | RTLD_LOCAL);
/* make sure we have something. make this an assertion so that
* there is feedback if something happens. (poor programming practice).
*/
return_val_if_fail(handle != NULL, NULL);
return handle;
}
void * mowgli_module_symbol(mowgli_module_t module, const char *symbol)
{
void *handle;
return_val_if_fail(module != NULL, NULL);
handle = dlsym(module, symbol);
/* make sure we have something. make this an assertion so that
* there is feedback if something happens. (poor programming practice).
*/
return_val_if_fail(handle != NULL, NULL);
return handle;
}
void mowgli_module_close(mowgli_module_t module)
{
return_if_fail(module != NULL);
dlclose(module);
}
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