diff options
author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-02-17 23:21:28 +0000 |
---|---|---|
committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-02-17 23:21:28 +0000 |
commit | e3940eb2080711edac189cca3f642ee89dc215f2 (patch) | |
tree | 1c390958fae49e34dce698b175487e6d4681e540 /nuttx/sched/sched_setuptaskfiles.c | |
parent | 2223612deb2cc6322992f8595b6d6f86fcb53ae1 (diff) | |
download | px4-nuttx-e3940eb2080711edac189cca3f642ee89dc215f2.tar.gz px4-nuttx-e3940eb2080711edac189cca3f642ee89dc215f2.tar.bz2 px4-nuttx-e3940eb2080711edac189cca3f642ee89dc215f2.zip |
NuttX RTOS
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/sched/sched_setuptaskfiles.c')
-rw-r--r-- | nuttx/sched/sched_setuptaskfiles.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/nuttx/sched/sched_setuptaskfiles.c b/nuttx/sched/sched_setuptaskfiles.c new file mode 100644 index 000000000..269e98e51 --- /dev/null +++ b/nuttx/sched/sched_setuptaskfiles.c @@ -0,0 +1,112 @@ +/************************************************************ + * sched_setuptaskfiles.c + * + * Copyright (C) 2007 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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 Gregory Nutt 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> + +#if CONFIG_NFILE_DESCRIPTORS > 0 + +#include <sched.h> +#include <errno.h> +#include <nuttx/fs.h> +#include "os_internal.h" + +/************************************************************ + * Private Functions + ************************************************************/ + +/************************************************************ + * Public Functions + ************************************************************/ + +/************************************************************ + * Function: sched_setuptaskfiles + * + * Description: + * Configure a newly allocated TCB so that it will inherit + * file descriptors and streams from the parent task. + * + * Parameters: + * tcb - tcb of the new task. + * + * Return Value: + * None + * + * Assumptions: + * + ************************************************************/ + +int sched_setuptaskfiles(_TCB *tcb) +{ +#ifdef CONFIG_DEV_CONSOLE + _TCB *rtcb = (_TCB*)g_readytorun.head; + int i; +#endif /* CONFIG_DEV_CONSOLE */ + + /* Allocate file descriptors for the TCB */ + + tcb->filelist = files_alloclist(); + if (!tcb->filelist) + { + *get_errno_ptr() = ENOMEM; + return ERROR; + } + +#ifdef CONFIG_DEV_CONSOLE + /* Duplicate the first three file descriptors */ + + if (rtcb->filelist) + { + for (i = 0; i < 3; i++) + { + (void)files_dup(&rtcb->filelist->fl_files[i], + &tcb->filelist->fl_files[i]); + } + } + +#if CONFIG_NFILE_STREAMS > 0 + /* Allocate file strems for the TCB */ + + return sched_setupstreams(tcb); +#else + return OK; +#endif /* CONFIG_NFILE_STREAMS */ +#endif /* CONFIG_DEV_CONSOLE */ +} + +#endif /* CONFIG_NFILE_DESCRIPTORS */ |