nuttx/sched/group/group_setupidlefiles.c
Xiang Xiao 6a3c2aded6 Fix wait loop and void cast (#24)
* Simplify EINTR/ECANCEL error handling

1. Add semaphore uninterruptible wait function
2 .Replace semaphore wait loop with a single uninterruptible wait
3. Replace all sem_xxx to nxsem_xxx

* Unify the void cast usage

1. Remove void cast for function because many place ignore the returned value witout cast
2. Replace void cast for variable with UNUSED macro
2020-01-02 10:54:43 -06:00

137 lines
4.0 KiB
C

/****************************************************************************
* sched/group/group_setupidlefiles.c
*
* Copyright (C) 2007-2010, 2012-2013, 2018 Gregory Nutt. All rights
* reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <sched.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/fs/fs.h>
#include <nuttx/net/net.h>
#include "group/group.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: group_setupidlefiles
*
* Description:
* Configure the idle thread's TCB.
*
* Input Parameters:
* tcb - tcb of the idle task.
*
* Returned Value:
* None
*
* Assumptions:
*
****************************************************************************/
int group_setupidlefiles(FAR struct task_tcb_s *tcb)
{
FAR struct task_group_s *group = tcb->cmn.group;
#ifdef CONFIG_DEV_CONSOLE
int fd;
#endif
DEBUGASSERT(group != NULL);
/* Initialize file descriptors for the TCB */
files_initlist(&group->tg_filelist);
#ifdef CONFIG_NET
/* Allocate socket descriptors for the TCB */
net_initlist(&group->tg_socketlist);
#endif
/* Open stdin, dup to get stdout and stderr. This should always
* be the first file opened and, hence, should always get file
* descriptor 0.
*/
#ifdef CONFIG_DEV_CONSOLE
fd = nx_open("/dev/console", O_RDWR);
if (fd == 0)
{
/* Successfully opened /dev/console as stdin (fd == 0) */
fs_dupfd2(0, 1);
fs_dupfd2(0, 2);
}
else
{
/* We failed to open /dev/console OR for some reason, we opened
* it and got some file descriptor other than 0.
*/
if (fd > 0)
{
sinfo("Open /dev/console fd: %d\n", fd);
close(fd);
}
else
{
serr("ERROR: Failed to open /dev/console: %d\n", fd);
}
return -ENFILE;
}
#endif
/* Allocate file/socket streams for the TCB */
#if CONFIG_NFILE_STREAMS > 0
return group_setupstreams(tcb);
#else
return OK;
#endif
}