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