80 lines
2.7 KiB
C
80 lines
2.7 KiB
C
/****************************************************************************
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* sched/group/group_setupstreams.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <assert.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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#ifdef CONFIG_FILE_STREAM
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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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fs_fdopen(0, O_RDONLY, (FAR struct tcb_s *)tcb, NULL);
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fs_fdopen(1, O_WROK | O_CREAT, (FAR struct tcb_s *)tcb, NULL);
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fs_fdopen(2, O_WROK | O_CREAT, (FAR struct tcb_s *)tcb, NULL);
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return OK;
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}
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#endif /* CONFIG_FILE_STREAM */
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