112 lines
3.3 KiB
C
112 lines
3.3 KiB
C
/****************************************************************************
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* sched/group/group_setuptaskfiles.c
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*
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* SPDX-License-Identifier: Apache-2.0
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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 <assert.h>
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#include <nuttx/fs/fs.h>
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#include <nuttx/trace.h>
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#include "sched/sched.h"
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#include "group/group.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: group_setuptaskfiles
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*
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* Description:
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* Configure a newly allocated TCB so that it will inherit
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* file descriptors and streams from the parent task.
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*
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* Input Parameters:
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* tcb - tcb of the new task.
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* actions - The spawn file actions
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* cloexec - Perform O_CLOEXEC on setup task files
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*
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* Returned Value:
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* Zero (OK) is returned on success; A negated errno value is returned on
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* failure.
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*
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* Assumptions:
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*
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****************************************************************************/
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int group_setuptaskfiles(FAR struct task_tcb_s *tcb,
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FAR const posix_spawn_file_actions_t *actions,
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bool cloexec)
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{
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FAR struct task_group_s *group = tcb->cmn.group;
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int ret = OK;
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#ifndef CONFIG_FDCLONE_DISABLE
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FAR struct tcb_s *rtcb;
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#endif
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sched_trace_begin();
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DEBUGASSERT(group);
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#ifndef CONFIG_DISABLE_PTHREAD
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DEBUGASSERT((tcb->cmn.flags & TCB_FLAG_TTYPE_MASK) !=
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TCB_FLAG_TTYPE_PTHREAD);
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#endif
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#ifndef CONFIG_FDCLONE_DISABLE
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/* The The file descriptors of kernel threads should be clean and
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* should not be generated based on user threads. Instead, an idle
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* thread should be chosen.
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*/
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if ((tcb->cmn.flags & TCB_FLAG_TTYPE_MASK) == TCB_FLAG_TTYPE_KERNEL)
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{
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rtcb = &g_idletcb[this_cpu()];
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}
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else
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{
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rtcb = this_task();
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}
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/* Duplicate the parent task's file descriptors */
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if (group != rtcb->group)
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{
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files_duplist(&rtcb->group->tg_filelist,
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&group->tg_filelist, actions, cloexec);
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}
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if (ret >= 0 && actions != NULL)
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{
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ret = spawn_file_actions(&tcb->cmn, actions);
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}
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#endif
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sched_trace_end();
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return ret;
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}
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