95 lines
3.8 KiB
C
95 lines
3.8 KiB
C
/****************************************************************************
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* libs/libc/string/lib_psfa_init.c
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <spawn.h>
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#include <nuttx/spawn.h>
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#ifdef CONFIG_BUILD_PROTECTED
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: task_spawn
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*
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* Description:
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* This function marshals task_spwan() parameters and invokes the
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* nx_task_spawn() system call.
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*
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* task_spawn() and posix_spawn() are NuttX OS interfaces. In PROTECTED
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* and KERNEL build modes, then can be reached from applications only via
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* a system call. Currently, the number of parameters in a system call
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* is limited to six; these spawn function have seven parameters. Rather
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* than extend the maximum number of parameters across all architectures,
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* I opted instead to marshal the seven parameters into a structure.
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*
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*
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* Input Parameters:
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* file_actions - The address of the posix_spawn_file_actions_t to be
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* initialized.
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*
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* Returned Value:
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* On success, these functions return 0; on failure they return an error
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* number from <errno.h>.
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*
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****************************************************************************/
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int task_spawn(FAR pid_t *pid, FAR const char *name, main_t entry,
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FAR const posix_spawn_file_actions_t *file_actions,
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FAR const posix_spawnattr_t *attr,
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FAR char *const argv[], FAR char *const envp[])
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{
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struct spawn_syscall_parms_s parms;
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parms.pid = pid;
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parms.name = name;
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parms.entry = entry;
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parms.file_actions = file_actions;
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parms.attr = attr;
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parms.argv = (FAR char * const *)argv;
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parms.envp = (FAR char * const *)envp;
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return nx_task_spawn(&parms);
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}
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#endif /* CONFIG_BUILD_PROTECTED */
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