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/****************************************************************************
* apps/builtin/exec_builtin.c
*
* Originally by:
*
* Copyright (C) 2011 Uros Platise. All rights reserved.
* Author: Uros Platise <uros.platise@isotel.eu>
*
* With subsequent updates, modifications, and general maintenance by:
*
* Copyright (C) 2012-2013 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 <spawn.h>
#include <fcntl.h>
#include <errno.h>
#include <debug.h>
#if 0
#include <sys/wait.h>
#include <sched.h>
#include <string.h>
#include <semaphore.h>
#include <nuttx/binfmt/builtin.h>
#endif
#include <apps/builtin.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: exec_builtin
*
* Description:
* Executes builtin applications registered during 'make context' time.
* New application is run in a separate task context (and thread).
*
* Input Parameter:
* filename - Name of the linked-in binary to be started.
* argv - Argument list
* redirfile - If output if redirected, this parameter will be non-NULL
* and will provide the full path to the file.
* oflags - If output is redirected, this parameter will provide the
* open flags to use. This will support file replacement
* of appending to an existing file.
*
* 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_builtin(FAR const char *appname, FAR char * const *argv,
FAR const char *redirfile, int oflags)
{
FAR const struct builtin_s *builtin;
posix_spawnattr_t attr;
posix_spawn_file_actions_t file_actions;
struct sched_param param;
pid_t pid;
int index;
int ret;
/* Verify that an application with this name exists */
index = builtin_isavail(appname);
if (index < 0)
{
ret = ENOENT;
goto errout_with_errno;
}
/* Get information about the builtin */
builtin = builtin_for_index(index);
if (builtin == NULL)
{
ret = ENOENT;
goto errout_with_errno;
}
/* Initialize attributes for task_spawn(). */
ret = posix_spawn_file_actions_init(&file_actions);
if (ret != 0)
{
goto errout_with_errno;
}
ret = posix_spawnattr_init(&attr);
if (ret != 0)
{
goto errout_with_errno;
}
/* Set the correct task size and priority */
param.sched_priority = builtin->priority;
ret = posix_spawnattr_setschedparam(&attr, ¶m);
if (ret != 0)
{
goto errout_with_errno;
}
ret = task_spawnattr_setstacksize(&attr, builtin->stacksize);
if (ret != 0)
{
goto errout_with_errno;
}
/* If robin robin scheduling is enabled, then set the scheduling policy
* of the new task to SCHED_RR before it has a chance to run.
*/
#if CONFIG_RR_INTERVAL > 0
ret = posix_spawnattr_setschedpolicy(&attr, SCHED_RR);
if (ret != 0)
{
goto errout_with_errno;
}
ret = posix_spawnattr_setflags(&attr,
POSIX_SPAWN_SETSCHEDPARAM |
POSIX_SPAWN_SETSCHEDULER);
if (ret != 0)
{
goto errout_with_errno;
}
#else
ret = posix_spawnattr_setflags(&attr, POSIX_SPAWN_SETSCHEDPARAM);
if (ret != 0)
{
goto errout_with_errno;
}
#endif
/* Is output being redirected? */
if (redirfile)
{
/* Set up to close open redirfile and set to stdout (1) */
ret = posix_spawn_file_actions_addopen(&file_actions, 1,
redirfile, O_WRONLY, 0644);
if (ret != 0)
{
sdbg("ERROR: posix_spawn_file_actions_addopen failed: %d\n", ret);
goto errout_with_errno;
}
}
/* Start the built-in */
ret = task_spawn(&pid, builtin->name, builtin->main, &file_actions,
&attr, (argv) ? &argv[1] : (FAR char * const *)NULL,
(FAR char * const *)NULL);
if (ret != 0)
{
sdbg("ERROR: task_spawn failed: %d\n", ret);
goto errout_with_errno;
}
/* Return the task ID of the new task if the task was sucessfully
* started. Otherwise, ret will be ERROR (and the errno value will
* be set appropriately).
*/
return pid;
errout_with_errno:
set_errno(ret);
return ERROR;
}
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