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Diffstat (limited to 'nuttx/sched/group_setupidlefiles.c')
| -rw-r--r-- | nuttx/sched/group_setupidlefiles.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/nuttx/sched/group_setupidlefiles.c b/nuttx/sched/group_setupidlefiles.c new file mode 100644 index 000000000..98cc7885e --- /dev/null +++ b/nuttx/sched/group_setupidlefiles.c @@ -0,0 +1,147 @@ +/**************************************************************************** + * sched/group_setupidlefiles.c + * + * Copyright (C) 2007-2010, 2012-2013 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 "os_internal.h" + +#if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NSOCKET_DESCRIPTORS > 0 + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: group_setupidlefiles + * + * Description: + * Configure the idle thread's TCB. + * + * Parameters: + * tcb - tcb of the idle task. + * + * Return Value: + * None + * + * Assumptions: + * + ****************************************************************************/ + +int group_setupidlefiles(FAR _TCB *tcb) +{ +#if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NFILE_DESCRIPTORS > 0 + FAR struct task_group_s *group = tcb->group; +#endif +#if CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_DEV_CONSOLE) + int fd; +#endif + +#if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NFILE_DESCRIPTORS > 0 + DEBUGASSERT(group); +#endif + +#if CONFIG_NFILE_DESCRIPTORS > 0 + /* Initialize file descriptors for the TCB */ + + files_initlist(&group->tg_filelist); +#endif + +#if CONFIG_NSOCKET_DESCRIPTORS > 0 + /* 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. + */ + +#if CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_DEV_CONSOLE) + fd = open("/dev/console", O_RDWR); + if (fd == 0) + { + /* Successfully opened /dev/console as stdin (fd == 0) */ + + (void)file_dup2(0, 1); + (void)file_dup2(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) + { + slldbg("Open /dev/console fd: %d\n", fd); + (void)close(fd); + } + else + { + slldbg("Failed to open /dev/console: %d\n", errno); + } + return -ENFILE; + } +#endif + + /* Allocate file/socket streams for the TCB */ + +#if CONFIG_NFILE_STREAMS > 0 + return group_setupstreams(tcb); +#else + return OK; +#endif +} + +#endif /* CONFIG_NFILE_DESCRIPTORS || CONFIG_NSOCKET_DESCRIPTORS */ |