Added redirection test

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@790 42af7a65-404d-4744-a932-0658087f49c3

examples/pipe/Makefile

@@ -38,7 +38,7 @@
 
 ASRCS	= 
 AOBJS	= $(ASRCS:.S=$(OBJEXT))
-CSRCS	= pipe_main.c transfer_test.c interlock_test.c
+CSRCS	= pipe_main.c transfer_test.c interlock_test.c redirect_test.c
 COBJS	= $(CSRCS:.c=$(OBJEXT))
 
 SRCS	= $(ASRCS) $(CSRCS)

examples/pipe/interlock_test.c

@@ -97,7 +97,10 @@ static void *null_writer(pthread_addr_t pvarg)
   /* Then close the FIFO */
 
   printf("null_writer: Closing %s\n", FIFO_PATH2);
-  close(fd);
+  if (close(fd) != 0)
+    {
+      fprintf(stderr, "null_writer: close failed: %d\n", errno);
+    }
   sleep(5);
   
   printf("null_writer: Returning success\n");
@@ -177,7 +180,10 @@ int interlock_test(void)
   /* Close the file */
 
   printf("interlock_test: Closing %s\n", FIFO_PATH2);
-  close(fd);
+  if (close(fd) != 0)
+    {
+      fprintf(stderr, "interlock_test: close failed: %d\n", errno);
+    }
 
   /* Wait for null_writer thread to complete */
 
@@ -204,7 +210,10 @@ int interlock_test(void)
   return 0;
 
 errout_with_file:
-  close(fd);
+  if (close(fd) != 0)
+    {
+      fprintf(stderr, "interlock_test: close failed: %d\n", errno);
+    }
 errout_with_thread:
   pthread_detach(writerid);
   pthread_cancel(writerid);

examples/pipe/pipe.h

@@ -51,6 +51,10 @@
 #define FIFO_PATH1 "/tmp/testfifo-1"
 #define FIFO_PATH2 "/tmp/testfifo-2"
 
+#ifndef CONFIG_EXAMPLES_PIPE_STACKSIZE
+#  define CONFIG_EXAMPLES_PIPE_STACKSIZE 1024
+#endif
+
 /****************************************************************************
  * Public Types
  ****************************************************************************/
@@ -65,5 +69,6 @@
 
 extern int transfer_test(int fdin, int fdout);
 extern int interlock_test(void);
+extern int redirection_test(void);
 
 #endif /* __EXAMPLES_PIPE_PIPE_H */

examples/pipe/pipe_main.c

@@ -44,6 +44,7 @@
 
 #include <stdio.h>
 #include <unistd.h>
+#include <sched.h>
 #include <fcntl.h>
 #include <errno.h>
 
@@ -65,151 +66,6 @@
  * Private Functions
  ****************************************************************************/
 
-/****************************************************************************
- * Name: null_writer
- ****************************************************************************/
-
-static void *null_writer(pthread_addr_t pvarg)
-{
-  int fd;
-
-  /* Wait a bit */
-
-  printf("null_writer: started -- sleeping\n");
-  sleep(5);
-
-  /* Then open the FIFO for write access */
-
-  printf("null_writer: Opening FIFO for write access\n");
-  fd = open(FIFO_PATH2, O_WRONLY);
-  if (fd < 0)
-    {
-      fprintf(stderr, "null_writer: Failed to open FIFO %s for writing, errno=%d\n",
-              FIFO_PATH2, errno);
-      return (void*)1;
-    }
-
-  /* Wait a bit more */
-
-  printf("null_writer: Opened %s for writing -- sleeping\n", FIFO_PATH2);
-  sleep(5);
-
-  /* Then close the FIFO */
-
-  printf("null_writer: Closing %s\n", FIFO_PATH2);
-  close(fd);
-  sleep(5);
-  
-  printf("null_writer: Returning success\n");
-  return (void*)0;
-}
-
-/****************************************************************************
- * Name: interlock_test
- ****************************************************************************/
-
-static int interlock_test(void)
-{
-  pthread_t writerid;
-  void *value;
-  char data[16];
-  ssize_t nbytes;
-  int fd;
-  int ret;
-
-  /* Create a FIFO */
-
-  ret = mkfifo(FIFO_PATH2, 0666);
-  if (ret < 0)
-    {
-      fprintf(stderr, "interlock_test: mkfifo failed with errno=%d\n", errno);
-      return 1;
-    }
-
-  /* Start the null_writer_thread */
-
-  printf("interlock_test: Starting null_writer thread\n");
-  ret = pthread_create(&writerid, NULL, null_writer, (pthread_addr_t)NULL);
-  if (ret != 0)
-    {
-      fprintf(stderr, "interlock_test: Failed to create null_writer thread, error=%d\n", ret);
-      ret = 2;
-      goto errout_with_fifo;
-    }
- 
-  /* Open one end of the FIFO for reading.  This open call should block until the
-   * null_writer thread opens the other end of the FIFO for writing.
-   */
-
-  printf("interlock_test: Opening FIFO for read access\n");
-  fd = open(FIFO_PATH2, O_RDONLY);
-  if (fd < 0)
-    {
-      fprintf(stderr, "interlock_test: Failed to open FIFO %s for reading, errno=%d\n",
-              FIFO_PATH2, errno);
-      ret = 3;
-      goto errout_with_thread;
-    }
-
-  /* Attempt to read one byte from the FIFO.  This should return end-of-file because
-   * the null_writer closes the FIFO without writing anything.
-   */
-
-  printf("interlock_test: Reading from %s\n", FIFO_PATH2);
-  nbytes = read(fd, data, 16);
-  if (nbytes < 0 )
-    {
-      fprintf(stderr, "interlock_test: read failed, errno=%d\n", errno);
-      ret = 4;
-      goto errout_with_file;
-    }
-  else if (ret != 0)
-    {
-      fprintf(stderr, "interlock_test: Read %d bytes of data -- aborting: %d\n", nbytes);
-      ret = 5;
-      goto errout_with_file;
-    }
-
-  /* Close the file */
-
-  printf("interlock_test: Closing %s\n", FIFO_PATH2);
-  close(fd);
-
-  /* Wait for null_writer thread to complete */
-
-  printf("interlock_test: Waiting for null_writer thread\n");
-  ret = pthread_join(writerid, &value);
-  if (ret != 0)
-    {
-      fprintf(stderr, "interlock_test: pthread_join failed, error=%d\n", ret);
-      ret = 6;
-      goto errout_with_fifo;
-    }
-  else
-    {
-      printf("interlock_test: writer returned %d\n", (int)value);
-      if (value != (void*)0)
-        {
-          ret = 7;
-          goto errout_with_fifo;
-        }
-    }
-
-  /* unlink(FIFO_PATH2); */
-  printf("interlock_test: Returning success\n");
-  return 0;
-
-errout_with_file:
-  close(fd);
-errout_with_thread:
-  pthread_detach(writerid);
-  pthread_cancel(writerid);
-errout_with_fifo:
-  /* unlink(FIFO_PATH2); */
-  printf("interlock_test: Returning %d\n", ret);
-  return ret;
-}
-
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -233,7 +89,7 @@ int user_start(int argc, char *argv[])
 
   /* Test FIFO logic */
 
-  printf("user_start: Performing FIFO test\n");
+  printf("\nuser_start: Performing FIFO test\n");
   ret = mkfifo(FIFO_PATH1, 0666);
   if (ret < 0)
     {
@@ -260,16 +116,26 @@ int user_start(int argc, char *argv[])
     {
       fprintf(stderr, "user_start: Failed to open FIFO %s for reading, errno=%d\n",
               FIFO_PATH1, errno);
-      close(filedes[1]);
+      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]);
-  close(filedes[0]);
+  if (close(filedes[0]) != 0)
-  close(filedes[1]);
+    {
+      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);
@@ -279,7 +145,7 @@ int user_start(int argc, char *argv[])
 
   /* Test PIPE logic */
 
-  printf("user_start: Performing pipe test\n");
+  printf("\nuser_start: Performing pipe test\n");
   ret = pipe(filedes);
   if (ret < 0)
     {
@@ -290,9 +156,15 @@ int user_start(int argc, char *argv[])
   /* Then perform the test using those file descriptors */
 
   ret = transfer_test(filedes[0], filedes[1]);
-  close(filedes[0]);
+  if (close(filedes[0]) != 0)
-  close(filedes[1]);
+    {
-  /* unlink(FIFO_PATH1); fails */
+      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);
@@ -300,7 +172,9 @@ int user_start(int argc, char *argv[])
     }
   printf("user_start: PIPE test PASSED\n");
 
-  /* Then perform the FIFO interlock test */
+  /* Perform the FIFO interlock test */
+
+  printf("\nuser_start: Performing pipe interlock test\n");
   ret = interlock_test();
   if (ret != 0)
     {
@@ -309,6 +183,17 @@ int user_start(int argc, char *argv[])
     }
   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;
 }

examples/pipe/redirect_test.c

@@ -0,0 +1,274 @@
+/****************************************************************************
+ * examples/pipe/redirect_test.c
+ *
+ *   Copyright (C) 2008 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/types.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sched.h>
+#include <errno.h>
+
+#include "pipe.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+#define READ_SIZE 37
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: redirect_reader
+ ****************************************************************************/
+
+static int redirect_reader(int argc, char *argv[])
+{
+  char buffer[READ_SIZE];
+  int fd = (int)argv[0];
+  int ret;
+  int nbytes = 0;
+ 
+  printf("redirect_reader: started with fd=%s\n", argv[1]);
+
+  /* Convert the fd to binary */
+
+  fd = atoi(argv[1]);
+
+  /* Re-direct the fd to stdin */
+
+  ret = dup2(fd, 0);
+  if (ret != 0)
+    {
+        fprintf(stderr, "redirect_reader: dup2 failed: %d\n", errno);
+        close(fd);
+        return 1;
+    }
+
+  /* Close the original file descriptor */
+
+  ret = close(fd);
+  if (ret != 0)
+    {
+       fprintf(stderr, "redirect_reader: failed to close fd=%d\n", fd);
+       return 2;
+    }
+
+  /* Then read from stdin until we hit the end of file */
+
+  for (;;)
+    {
+      /* Read from stdin */
+
+      ret = read(0, buffer, READ_SIZE);
+      if (ret < 0 )
+        {
+           fprintf(stderr, "redirect_reader: read failed, errno=%d\n", errno);
+           return 3;
+        }
+      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 4;
+        }
+    }
+
+  printf("redirect_reader: %d bytes read\n", nbytes);
+  ret = close(0);
+  if (ret != 0)
+    {
+       fprintf(stderr, "redirect_reader: failed to close fd=%d\n", fd);
+       return 5;
+    }
+  printf("redirect_reader: Returning success\n");
+  return 0;
+}
+
+/****************************************************************************
+ * Name: redirect_writer
+ ****************************************************************************/
+
+static int redirect_writer(int argc, char *argv[])
+{
+  int fd;
+  int nbytes = 0;
+  int ret;
+ 
+  printf("redirect_writer: started with fd=%s\n", argv[1]);
+
+  /* Convert the fd to binary */
+
+  fd = atoi(argv[1]);
+
+  /* Re-direct the fd to stdout */
+
+  ret = dup2(fd, 1);
+  if (ret != 0)
+    {
+        fprintf(stderr, "redirect_writer: dup2 failed: %d\n", errno);
+        return 1;
+    }
+
+  /* Close the original file descriptor */
+
+  ret = close(fd);
+  if (ret != 0)
+    {
+       fprintf(stderr, "redirect_reader: failed to close fd=%d\n", fd);
+       return 2;
+    }
+
+  /* Then write a bunch of stuff to stdout */
+
+  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");
+  printf("redirect_writer: %d bytes read\n", nbytes);
+
+  ret = close(1);
+  if (ret != 0)
+    {
+       fprintf(stderr, "redirect_writer: failed to close fd=%d\n", fd);
+       return 3;
+    }
+  printf("redirect_writer: Returning success\n");
+  return 0;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: redirection_test
+ ****************************************************************************/
+
+int redirection_test(void)
+{
+  const char *argv[2];
+  char buffer[8];
+  int readerid;
+  int writerid;
+  int filedes[2];
+  int ret;
+
+  /* Create the pipe */
+
+  ret = pipe(filedes);
+  if (ret < 0)
+    {
+      fprintf(stderr, "redirection_test: pipe failed with errno=%d\n", errno);
+      return 5;
+    }
+ 
+  /* Start redirect_reader thread */
+
+  printf("redirection_test: Starting redirect_reader task with fd=%d\n", filedes[0]);
+  sprintf(buffer, "%d", filedes[0]);
+  argv[0] = buffer;
+  argv[1] = NULL;
+  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]);
+  sprintf(buffer, "%d", filedes[1]);
+  argv[0] = buffer;
+  argv[1] = NULL;
+  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;
+    }
+
+  /* Wait for redirect_writer thread to complete */
+
+  printf("redirection_test: Waiting...\n");
+  sleep(10);
+
+  printf("redirection_test: returning %d\n", ret);
+  return ret;
+}
+