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/****************************************************************************
* binfmt/binfmt_exec.c
*
* Copyright (C) 2009, 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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
* COPYRIGHT OWNER OR CONTRIBUTORS 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <string.h>
#include <sched.h>
#include <debug.h>
#include <errno.h>
#include <nuttx/binfmt/binfmt.h>
#include "binfmt_internal.h"
#ifndef CONFIG_BINFMT_DISABLE
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: exec
*
* Description:
* This is a convenience function that wraps load_ and exec_module into
* one call. The priority of the executed program is set to be the
* same as the priority of the calling thread.
*
* Input Parameter:
* filename - Fulll path to the binary to be loaded
* argv - Argument list
* exports - Table of exported symbols
* nexports - The number of symbols in exports
*
* Returned Value:
* This is an end-user function, so it follows the normal convention:
* Returns the PID of the exec'ed module. On failure, it.returns
* -1 (ERROR) and sets errno appropriately.
*
****************************************************************************/
int exec(FAR const char *filename, FAR const char **argv,
FAR const struct symtab_s *exports, int nexports)
{
struct binary_s bin;
struct sched_param param;
int ret;
/* Get the priority of this thread */
ret = sched_getparam(0, ¶m);
if (ret < 0)
{
bdbg("ERROR: sched_getparam failed: %d\n", errno);
return ERROR;
}
/* Load the module into memory */
memset(&bin, 0, sizeof(struct binary_s));
bin.filename = filename;
bin.exports = exports;
bin.nexports = nexports;
ret = load_module(&bin);
if (ret < 0)
{
bdbg("ERROR: Failed to load program '%s'\n", filename);
return ERROR;
}
/* Then start the module at the priority of this thread */
ret = exec_module(&bin, param.sched_priority);
if (ret < 0)
{
bdbg("ERROR: Failed to execute program '%s'\n", filename);
unload_module(&bin);
return ERROR;
}
return ret;
}
#endif /* CONFIG_BINFMT_DISABLE */
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