/usr/include/gnunet/gnunet_plugin_lib.h is in gnunet-dev 0.9.3-7build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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This file is part of GNUnet.
(C) 2001, 2002, 2003, 2004, 2005, 2006 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 2, or (at your
option) any later version.
GNUnet 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file include/gnunet_plugin_lib.h
* @brief plugin loading and unloading
* @author Christian Grothoff
*/
#ifndef GNUNET_PLUGIN_LIB_H
#define GNUNET_PLUGIN_LIB_H
#ifdef __cplusplus
extern "C"
{
#if 0 /* keep Emacsens' auto-indent happy */
}
#endif
#endif
#include "gnunet_common.h"
#include "gnunet_configuration_lib.h"
/**
* Signature of any function exported by a plugin.
*
* @param arg argument to the function (context)
* @return some pointer, NULL if the plugin was
* shutdown or if there was an error, otherwise
* the plugin's API on success
*/
typedef void *(*GNUNET_PLUGIN_Callback) (void *arg);
/**
* Test if a plugin exists.
*
* Note that the library must export a symbol called
* "library_name_init" for the test to succeed.
*
* @param library_name name of the plugin to test if it is installed
* @return GNUNET_YES if the plugin exists, GNUNET_NO if not
*/
int
GNUNET_PLUGIN_test (const char *library_name);
/**
* Setup plugin (runs the "init" callback and returns whatever "init"
* returned). If "init" returns NULL, the plugin is unloaded.
*
* Note that the library must export symbols called
* "library_name_init" and "library_name_done". These will be called
* when the library is loaded and unloaded respectively.
*
* @param library_name name of the plugin to load
* @param arg argument to the plugin initialization function
* @return whatever the initialization function returned, NULL on error
*/
void *
GNUNET_PLUGIN_load (const char *library_name, void *arg);
/**
* Signature of a function called by 'GNUNET_PLUGIN_load_all'.
*
* @param cls closure
* @param library_name full name of the library (to be used with
* 'GNUNET_PLUGIN_unload')
* @param lib_ret return value from the initialization function
* of the library (same as what 'GNUNET_PLUGIN_load' would
* have returned for the given library name)
*/
typedef void (*GNUNET_PLUGIN_LoaderCallback) (void *cls,
const char *library_name,
void *lib_ret);
/**
* Load all compatible plugins with the given base name.
*
* Note that the library must export symbols called
* "basename_ANYTHING_init" and "basename_ANYTHING__done". These will
* be called when the library is loaded and unloaded respectively.
*
* @param basename basename of the plugins to load
* @param arg argument to the plugin initialization function
* @param cb function to call for each plugin found
* @param cb_cls closure for 'cb'
*/
void
GNUNET_PLUGIN_load_all (const char *basename, void *arg,
GNUNET_PLUGIN_LoaderCallback cb, void *cb_cls);
/**
* Unload plugin (runs the "done" callback and returns whatever "done"
* returned). The plugin is then unloaded.
*
* @param library_name name of the plugin to unload
* @param arg argument to the plugin shutdown function
* @return whatever the shutdown function returned, typically NULL
* or a "char *" representing the error message
*/
void *
GNUNET_PLUGIN_unload (const char *library_name, void *arg);
#if 0 /* keep Emacsens' auto-indent happy */
{
#endif
#ifdef __cplusplus
}
#endif
/* ifndef GNUNET_PLUGIN_LIB_H */
#endif
/* end of gnunet_plugin_lib.h */
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