68951e8d72
* Remove multiple newlines at the end of files * Remove the whitespace from the end of lines
76 lines
2.9 KiB
C
76 lines
2.9 KiB
C
/****************************************************************************
|
|
* libs/libc/unistd/lib_pipe.c
|
|
*
|
|
* Copyright (C) 2016 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 <unistd.h>
|
|
|
|
#include <nuttx/drivers/drivers.h>
|
|
|
|
#if defined(CONFIG_PIPES) && CONFIG_DEV_PIPE_SIZE > 0
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: pipe
|
|
*
|
|
* Description:
|
|
* pipe() creates a pair of file descriptors, pointing to a pipe inode,
|
|
* and places them in the array pointed to by 'fd'. fd[0] is for reading,
|
|
* fd[1] is for writing.
|
|
*
|
|
* Input Parameters:
|
|
* fd[2] - The user provided array in which to catch the pipe file
|
|
* descriptors
|
|
*
|
|
* Returned Value:
|
|
* 0 is returned on success; otherwise, -1 is returned with errno set
|
|
* appropriately.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int pipe(int fd[2])
|
|
{
|
|
return pipe2(fd, CONFIG_DEV_PIPE_SIZE);
|
|
}
|
|
|
|
#endif /* CONFIG_PIPES && CONFIG_DEV_PIPE_SIZE > 0 */
|