/****************************************************************************
* group_setupstreams.c
*
* Copyright (C) 2007-2008, 2010-2013 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 <sched.h>
#include <fcntl.h>
#include <nuttx/fs/fs.h>
#include <nuttx/net/net.h>
#include <nuttx/lib.h>
#include "group_internal.h"
/* Make sure that there are file or socket descriptors in the system and
* that some number of streams have been configured.
*/
#if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NSOCKET_DESCRIPTORS > 0
#if CONFIG_NFILE_STREAMS > 0
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: group_setupstreams
*
* Description:
* Setup streams data structures that may be used for standard C buffered
* I/O with underlying socket or file desciptors
*
****************************************************************************/
int group_setupstreams(FAR struct task_tcb_s *tcb)
{
DEBUGASSERT(tcb && tcb->cmn.group);
/* Initialize file streams for the task group */
#if defined(CONFIG_NUTTX_KERNEL) && defined(CONFIG_MM_KERNEL_HEAP)
lib_streaminit(tcb->cmn.group->tg_streamlist);
#else
lib_streaminit(&tcb->cmn.group->tg_streamlist);
#endif
/* fdopen to get the stdin, stdout and stderr streams. The following logic
* depends on the fact that the library layer will allocate FILEs in order.
*
* fd = 0 is stdin (read-only)
* fd = 1 is stdout (write-only, append)
* fd = 2 is stderr (write-only, append)
*/
(void)fs_fdopen(0, O_RDONLY, (FAR struct tcb_s *)tcb);
(void)fs_fdopen(1, O_WROK|O_CREAT, (FAR struct tcb_s *)tcb);
(void)fs_fdopen(2, O_WROK|O_CREAT, (FAR struct tcb_s *)tcb);
return OK;
}
#endif /* CONFIG_NFILE_STREAMS > 0 */
#endif /* CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NSOCKET_DESCRIPTORS > 0 */
