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151 lines
4.5 KiB
151 lines
4.5 KiB
/**************************************************************************** |
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* sched/sched_setupidlefiles.c |
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* |
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* Copyright (C) 2007-2010, 2012 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 <stdio.h> |
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#include <unistd.h> |
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#include <fcntl.h> |
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#include <sched.h> |
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#include <errno.h> |
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#include <debug.h> |
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#include <nuttx/fs/fs.h> |
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#include <nuttx/net/net.h> |
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#include "os_internal.h" |
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#if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NSOCKET_DESCRIPTORS > 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: sched_setupidlefiles |
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* |
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* Description: |
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* Configure the idle thread's TCB. |
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* |
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* Parameters: |
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* tcb - tcb of the idle task. |
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* |
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* Return Value: |
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* None |
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* |
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* Assumptions: |
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* |
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****************************************************************************/ |
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int sched_setupidlefiles(FAR _TCB *tcb) |
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{ |
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#if CONFIG_NFILE_DESCRIPTORS > 0 |
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FAR struct task_group_s *group = tcb->group; |
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#endif |
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#if CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_DEV_CONSOLE) |
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int fd; |
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#endif |
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#if CONFIG_NFILE_DESCRIPTORS > 0 |
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DEBUGASSERT(group); |
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#endif |
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/* Initialize file descriptors for the TCB */ |
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#if CONFIG_NFILE_DESCRIPTORS > 0 |
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files_initlist(&group->tg_filelist); |
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#endif |
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/* Allocate socket descriptors for the TCB */ |
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#if CONFIG_NSOCKET_DESCRIPTORS > 0 |
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tcb->sockets = net_alloclist(); |
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if (!tcb->sockets) |
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{ |
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return -ENOMEM; |
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} |
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#endif |
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/* Open stdin, dup to get stdout and stderr. This should always |
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* be the first file opened and, hence, should always get file |
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* descriptor 0. |
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*/ |
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#if CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_DEV_CONSOLE) |
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fd = open("/dev/console", O_RDWR); |
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if (fd == 0) |
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{ |
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/* Successfully opened /dev/console as stdin (fd == 0) */ |
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(void)file_dup2(0, 1); |
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(void)file_dup2(0, 2); |
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} |
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else |
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{ |
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/* We failed to open /dev/console OR for some reason, we opened |
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* it and got some file descriptor other than 0. |
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*/ |
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if (fd > 0) |
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{ |
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slldbg("Open /dev/console fd: %d\n", fd); |
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(void)close(fd); |
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} |
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else |
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{ |
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slldbg("Failed to open /dev/console: %d\n", errno); |
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} |
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return -ENFILE; |
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} |
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#endif |
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/* Allocate file/socket streams for the TCB */ |
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#if CONFIG_NFILE_STREAMS > 0 |
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return sched_setupstreams(tcb); |
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#else |
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return OK; |
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#endif |
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} |
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#endif /* CONFIG_NFILE_DESCRIPTORS || CONFIG_NSOCKET_DESCRIPTORS */
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