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-rw-r--r--nuttx/examples/pipe/redirect_test.c326
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diff --git a/nuttx/examples/pipe/redirect_test.c b/nuttx/examples/pipe/redirect_test.c
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--- a/nuttx/examples/pipe/redirect_test.c
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-/****************************************************************************
- * examples/pipe/redirect_test.c
- *
- * Copyright (C) 2008-2009 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 <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sched.h>
-#include <semaphore.h>
-#include <errno.h>
-
-#include "pipe.h"
-
-/****************************************************************************
- * Definitions
- ****************************************************************************/
-
-#define READ_SIZE 37
-
-/****************************************************************************
- * Private Types
- ****************************************************************************/
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-static sem_t g_rddone;
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: redirect_reader
- ****************************************************************************/
-
-static int redirect_reader(int argc, char *argv[])
-{
- char buffer[READ_SIZE];
- int fdin;
- int fdout;
- int ret;
- int nbytes = 0;
-
- printf("redirect_reader: started with fdin=%s\n", argv[1]);
-
- /* Convert the fdin to binary */
-
- fdin = atoi(argv[1]);
- fdout = atoi(argv[2]);
-
- /* Close fdout -- we don't need it */
-
- ret = close(fdout);
- if (ret != 0)
- {
- fprintf(stderr, "redirect_reader: failed to close fdout=%d\n", fdout);
- return 1;
- }
-
- /* Re-direct the fdin to stdin */
-
- ret = dup2(fdin, 0);
- if (ret != 0)
- {
- fprintf(stderr, "redirect_reader: dup2 failed: %d\n", errno);
- close(fdin);
- return 2;
- }
-
- /* Close the original file descriptor */
-
- ret = close(fdin);
- if (ret != 0)
- {
- fprintf(stderr, "redirect_reader: failed to close fdin=%d\n", fdin);
- return 3;
- }
-
- /* Then read from stdin until we hit the end of file */
-
- fflush(stdout);
- for (;;)
- {
- /* Read from stdin */
-
- ret = read(0, buffer, READ_SIZE);
- if (ret < 0 )
- {
- fprintf(stderr, "redirect_reader: read failed, errno=%d\n", errno);
- return 4;
- }
- else if (ret == 0)
- {
- break;
- }
- nbytes += ret;
-
- /* Echo to stdout */
-
- ret = write(1, buffer, ret);
- if (ret < 0)
- {
- fprintf(stderr, "redirect_reader: read failed, errno=%d\n", errno);
- return 5;
- }
- }
-
- printf("redirect_reader: %d bytes read\n", nbytes);
- ret = close(0);
- if (ret != 0)
- {
- fprintf(stderr, "redirect_reader: failed to close fd=0\n");
- return 6;
- }
-
- sem_post(&g_rddone);
- printf("redirect_reader: Returning success\n");
- return 0;
-}
-
-/****************************************************************************
- * Name: redirect_writer
- ****************************************************************************/
-
-static int redirect_writer(int argc, char *argv[])
-{
- int fdin;
- int fdout;
- int nbytes = 0;
- int ret;
-
- fprintf(stderr, "redirect_writer: started with fdout=%s\n", argv[2]);
-
- /* Convert the fdout to binary */
-
- fdin = atoi(argv[1]);
- fdout = atoi(argv[2]);
-
- /* Close fdin -- we don't need it */
-
- ret = close(fdin);
- if (ret != 0)
- {
- fprintf(stderr, "redirect_reader: failed to close fdin=%d\n", fdin);
- return 1;
- }
-
- /* Re-direct the fdout to stdout */
-
- ret = dup2(fdout, 1);
- if (ret != 0)
- {
- fprintf(stderr, "redirect_writer: dup2 failed: %d\n", errno);
- return 2;
- }
-
- /* Close the original file descriptor */
-
- ret = close(fdout);
- if (ret != 0)
- {
- fprintf(stderr, "redirect_reader: failed to close fdout=%d\n", fdout);
- return 3;
- }
-
- /* Then write a bunch of stuff to stdout */
-
- fflush(stderr);
- nbytes += printf("\nFour score and seven years ago our fathers brought forth on this continent a new nation,\n");
- nbytes += printf("conceived in Liberty, and dedicated to the proposition that all men are created equal.\n");
- nbytes += printf("\nNow we are engaged in a great civil war, testing whether that nation, or any nation, so\n");
- nbytes += printf("conceived and so dedicated, can long endure. We are met on a great battle-field of that war.\n");
- nbytes += printf("We have come to dedicate a portion of that field, as a final resting place for those who here\n");
- nbytes += printf("gave their lives that that nation might live. It is altogether fitting and proper that we\n");
- nbytes += printf("should do this.\n");
- nbytes += printf("\nBut, in a larger sense, we can not dedicate - we can not consecrate - we can not hallow - this ground.\n");
- nbytes += printf("The brave men, living and dead, who struggled here, have consecrated it, far above our poor power\n");
- nbytes += printf("to add or detract. The world will little note, nor long remember what we say here, but it can\n");
- nbytes += printf("never forget what they did here. It is for us the living, rather, to be dedicated here to the\n");
- nbytes += printf("unfinished work which they who fought here have thus far so nobly advanced. It is rather for us to\n");
- nbytes += printf("be here dedicated to the great task remaining before us - that from these honored dead we take\n");
- nbytes += printf("increased devotion to that cause for which they gave the last full measure of devotion - that we\n");
- nbytes += printf("here highly resolve that these dead shall not have died in vain - that this nation, under God,\n");
- nbytes += printf("shall have a new birth of freedom - and that government of the people, by the people, for the\n");
- nbytes += printf("people, shall not perish from the earth.\n\n");
- fflush(stdout);
-
- fprintf(stderr, "redirect_writer: %d bytes written\n", nbytes);
-
- ret = close(1);
- if (ret != 0)
- {
- fprintf(stderr, "redirect_writer: failed to close fd=1\n");
- return 4;
- }
-
- fprintf(stderr, "redirect_writer: Returning success\n");
- return 0;
-}
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: redirection_test
- ****************************************************************************/
-
-int redirection_test(void)
-{
- const char *argv[3];
- char buffer1[8];
- char buffer2[8];
- int readerid;
- int writerid;
- int filedes[2];
- int ret;
-
- sem_init(&g_rddone, 0, 0);
-
- /* Create the pipe */
-
- ret = pipe(filedes);
- if (ret < 0)
- {
- fprintf(stderr, "redirection_test: pipe failed with errno=%d\n", errno);
- return 5;
- }
-
- sprintf(buffer1, "%d", filedes[0]);
- argv[0] = buffer1;
- sprintf(buffer2, "%d", filedes[1]);
- argv[1] = buffer2;
- argv[2] = NULL;
-
- /* Start redirect_reader thread */
-
- printf("redirection_test: Starting redirect_reader task with fd=%d\n", filedes[0]);
- readerid = task_create("redirect_reader", 50, CONFIG_EXAMPLES_PIPE_STACKSIZE, redirect_reader, argv);
- if (readerid < 0)
- {
- fprintf(stderr, "redirection_test: Failed to create redirect_writer task: %d\n", errno);
- return 1;
- }
-
- /* Start redirect_writer task */
-
- printf("redirection_test: Starting redirect_writer task with fd=%d\n", filedes[1]);
- writerid = task_create("redirect_writer", 50, CONFIG_EXAMPLES_PIPE_STACKSIZE, redirect_writer, argv);
- if (writerid < 0)
- {
- fprintf(stderr, "redirection_test: Failed to create redirect_writer task: %d\n", errno);
- ret = task_delete(readerid);
- if (ret != 0)
- {
- fprintf(stderr, "redirection_test: Failed to delete redirect_reader task %d\n", errno);
- }
- return 2;
- }
-
- /* We should be able to close the pipe file descriptors now. */
-
- 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;
- }
-
- /* Wait for redirect_writer thread to complete */
-
- printf("redirection_test: Waiting...\n");
- fflush(stdout);
- sem_wait(&g_rddone);
-
- printf("redirection_test: returning %d\n", ret);
- return ret;
-}
-