/****************************************************************************
* examples/pipe/pipe_main.c
*
* Copyright (C) 2008-2009, 2011 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 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 <sys/stat.h>
#include <stdio.h>
#include <unistd.h>
#include <sched.h>
#include <fcntl.h>
#include <errno.h>
#include "pipe.h"
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: user_start
****************************************************************************/
int user_start(int argc, char *argv[])
{
int filedes[2];
int ret;
/* Test FIFO logic */
printf("\nuser_start: Performing FIFO test\n");
ret = mkfifo(FIFO_PATH1, 0666);
if (ret < 0)
{
fprintf(stderr, "user_start: mkfifo failed with errno=%d\n", errno);
return 1;
}
/* Open one end of the FIFO for reading and the other end for writing. NOTE:
* the following might not work on most FIFO implementations because the attempt
* to open just one end of the FIFO for writing might block. The NuttX FIFOs block
* only on open for read-only (see interlock_test()).
*/
filedes[1] = open(FIFO_PATH1, O_WRONLY);
if (filedes[1] < 0)
{
fprintf(stderr, "user_start: Failed to open FIFO %s for writing, errno=%d\n",
FIFO_PATH1, errno);
return 2;
}
filedes[0] = open(FIFO_PATH1, O_RDONLY);
if (filedes[0] < 0)
{
fprintf(stderr, "user_start: Failed to open FIFO %s for reading, errno=%d\n",
FIFO_PATH1, errno);
if (close(filedes[1]) != 0)
{
fprintf(stderr, "user_start: close failed: %d\n", errno);
}
return 3;
}
/* Then perform the test using those file descriptors */
ret = transfer_test(filedes[0], filedes[1]);
if (close(filedes[0]) != 0)
{
fprintf(stderr, "user_start: close failed: %d\n", errno);
}
if (close(filedes[1]) != 0)
{
fprintf(stderr, "user_start: close failed: %d\n", errno);
}
/* unlink(FIFO_PATH1); fails */
if (ret != 0)
{
fprintf(stderr, "user_start: FIFO test FAILED (%d)\n", ret);
return 4;
}
printf("user_start: FIFO test PASSED\n");
/* Test PIPE logic */
printf("\nuser_start: Performing pipe test\n");
ret = pipe(filedes);
if (ret < 0)
{
fprintf(stderr, "user_start: pipe failed with errno=%d\n", errno);
return 5;
}
/* Then perform the test using those file descriptors */
ret = transfer_test(filedes[0], filedes[1]);
if (close(filedes[0]) != 0)
{
fprintf(stderr, "user_start: close failed: %d\n", errno);
}
if (close(filedes[1]) != 0)
{
fprintf(stderr, "user_start: close failed: %d\n", errno);
}
if (ret != 0)
{
fprintf(stderr, "user_start: PIPE test FAILED (%d)\n", ret);
return 6;
}
printf("user_start: PIPE test PASSED\n");
/* Perform the FIFO interlock test */
printf("\nuser_start: Performing pipe interlock test\n");
ret = interlock_test();
if (ret != 0)
{
fprintf(stderr, "user_start: FIFO interlock test FAILED (%d)\n", ret);
return 7;
}
printf("user_start: PIPE interlock test PASSED\n");
/* Perform the pipe redirection test */
printf("\nuser_start: Performing redirection test\n");
ret = redirection_test();
if (ret != 0)
{
fprintf(stderr, "user_start: FIFO redirection test FAILED (%d)\n", ret);
return 7;
}
printf("user_start: PIPE redirection test PASSED\n");
fflush(stdout);
return 0;
}
