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/************************************************************
* sched_setuptaskfiles.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 Gregory Nutt 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>
#if CONFIG_NFILE_DESCRIPTORS > 0
#include <sched.h>
#include <errno.h>
#include <nuttx/fs.h>
#include "os_internal.h"
/************************************************************
* Private Functions
************************************************************/
/************************************************************
* Public Functions
************************************************************/
/************************************************************
* Function: sched_setuptaskfiles
*
* Description:
* Configure a newly allocated TCB so that it will inherit
* file descriptors and streams from the parent task.
*
* Parameters:
* tcb - tcb of the new task.
*
* Return Value:
* None
*
* Assumptions:
*
************************************************************/
int sched_setuptaskfiles(FAR _TCB *tcb)
{
#ifdef CONFIG_DEV_CONSOLE
FAR _TCB *rtcb = (FAR _TCB*)g_readytorun.head;
int i;
#endif /* CONFIG_DEV_CONSOLE */
/* Allocate file descriptors for the TCB */
tcb->filelist = files_alloclist();
if (!tcb->filelist)
{
*get_errno_ptr() = ENOMEM;
return ERROR;
}
#ifdef CONFIG_DEV_CONSOLE
/* Duplicate the first three file descriptors */
if (rtcb->filelist)
{
for (i = 0; i < 3; i++)
{
(void)files_dup(&rtcb->filelist->fl_files[i],
&tcb->filelist->fl_files[i]);
}
}
#if CONFIG_NFILE_STREAMS > 0
/* Allocate file strems for the TCB */
return sched_setupstreams(tcb);
#else
return OK;
#endif /* CONFIG_NFILE_STREAMS */
#endif /* CONFIG_DEV_CONSOLE */
}
#endif /* CONFIG_NFILE_DESCRIPTORS */
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