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/*
* COPYRIGHT (c) 2013 Chris Johns <chrisj@rtems.org>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
/**
* @file
*
* @ingroup rtems_rap
*
* @brief RTEMS Application Loader
*
* This is the RTEMS Application loader for files in the RAP format.
*/
#if !defined (_RAP_H_)
#define _RAP_H_
#include <rtems.h>
#include <rtems/chain.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/**
* @defgroup rtems_rap RTEMS Application Loader
*
* The module implements an application loader for files in the RAP format. The
* RAP format is:
*
* <header>
* <compressed container>
*
* The compressed container is a stream of ELF relocatable object files.
*
* TBD.
*/
/**
* The module iterator handle.
*/
typedef bool (*rtems_rap_iterator_t) (void* handle);
/**
* Load an application.
*
* @param name The name of the application file.
* @return bool True if the module loads else an error.
*/
bool rtems_rap_load (const char* name, int mode, int argc, const char* argv[]);
/**
* Unload an application.
*
* @param obj The application descriptor.
* @retval true The application file has been unloaded.
* @retval false The application could not be unloaded.
*/
bool rtems_rap_unload (const char* name);
/**
* Find the application handle given a file name.
*
* @param name The name of the application file. It can be absolute or
* relative. Relative names can the basename with an extension.
* @retval NULL No application file with that name found.
* @return void* The application descriptor.
*/
void* rtems_rap_find (const char* name);
/**
* Run an iterator over the modules calling the iterator function.
*
* @param iterator The iterator function.
* @retval true The iterator function returned did not return false.
* @retval false The iterator function returned false..
*/
bool rtems_rap_iterate (rtems_rap_iterator_t iterator);
/**
* Return the name of the module given a handle.
*
* @param handle The module handle.
* @return const char* The name of the module if the handle is valid else it
* is NULL.
*/
const char* rtems_rap_name (void* handle);
/**
* Return the DL handle used to load the module given the RAP handle.
*
* @param handle The module handle.
* @return void* The DL handle returned by the dlopen call.
*/
void* rtems_rap_dl_handle (void* handle);
/**
* Get the last error message clearing it. This call is not thread safe is
* multiple threads are loading object files at the same time. This call
* follows the model provided by the dlopen family of calls.
*
* @param message Pointer to a buffer to copy the message into.
* @param max_message The maximum message that can be copied.
* @return int The last error number.
*/
int rtems_rap_get_error (char* message, size_t max_message);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif
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