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99 lines
3.7 KiB
99 lines
3.7 KiB
/**************************************************************************** |
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* 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.h> |
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#include "group_internal.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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* Private Functions |
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****************************************************************************/ |
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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 desciptors |
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* |
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****************************************************************************/ |
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int group_setupstreams(FAR _TCB *tcb) |
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{ |
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DEBUGASSERT(tcb && tcb->group); |
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/* Initialize file streams for the task group */ |
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lib_streaminit(&tcb->group->tg_streamlist); |
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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, tcb); |
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(void)fs_fdopen(1, O_WROK|O_CREAT, tcb); |
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(void)fs_fdopen(2, O_WROK|O_CREAT, 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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