| /**************************************************************************** |
| * 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_spawnattr_init(&attr); |
| if (ret != 0) |
| { |
| goto errout_with_errno; |
| } |
| |
| ret = posix_spawn_file_actions_init(&file_actions); |
| if (ret != 0) |
| { |
| goto errout_with_attrs; |
| } |
| |
| /* Set the correct task size and priority */ |
| |
| param.sched_priority = builtin->priority; |
| ret = posix_spawnattr_setschedparam(&attr, ¶m); |
| if (ret != 0) |
| { |
| goto errout_with_actions; |
| } |
| |
| ret = task_spawnattr_setstacksize(&attr, builtin->stacksize); |
| if (ret != 0) |
| { |
| goto errout_with_actions; |
| } |
| |
| /* 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_actions; |
| } |
| |
| ret = posix_spawnattr_setflags(&attr, |
| POSIX_SPAWN_SETSCHEDPARAM | |
| POSIX_SPAWN_SETSCHEDULER); |
| if (ret != 0) |
| { |
| goto errout_with_actions; |
| } |
| #else |
| ret = posix_spawnattr_setflags(&attr, POSIX_SPAWN_SETSCHEDPARAM); |
| if (ret != 0) |
| { |
| goto errout_with_actions; |
| } |
| #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_actions; |
| } |
| } |
| |
| /* 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_actions; |
| } |
| |
| /* Free attibutes and file actions. Ignoring return values in the case |
| * of an error. |
| */ |
| |
| /* 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). |
| */ |
| |
| (void)posix_spawn_file_actions_destroy(&file_actions); |
| (void)posix_spawnattr_destroy(&attr); |
| return pid; |
| |
| errout_with_actions: |
| (void)posix_spawn_file_actions_destroy(&file_actions); |
| |
| errout_with_attrs: |
| (void)posix_spawnattr_destroy(&attr); |
| |
| errout_with_errno: |
| set_errno(ret); |
| return ERROR; |
| } |