Subversion Repositories scarts

/* Check that TRT happens for pipe corner cases.

#notarget: cris*-*-elf

*/

#include <stddef.h>

#include <signal.h>

#include <stdlib.h>

#include <stdio.h>

#include <unistd.h>

#include <errno.h>

#include <limits.h>

void err (const char *s)

{

  perror (s);

  abort ();

}

int main (void)

{

  int pip[2];

  char c;

  int pipemax;

  if (pipe (pip) != 0)

    err ("pipe");

#ifdef PIPE_MAX

  pipemax = PIPE_MAX;

#else

  pipemax = fpathconf (pip[1], _PC_PIPE_BUF);

#endif

  if (pipemax <= 0)

    {

      fprintf (stderr, "Bad pipemax %d\n", pipemax);

      abort ();

    }

  /* Writing to wrong end of pipe.  */

  if (write (pip[0], "argh", 1) != -1

      || errno != EBADF)

    err ("write pipe");

  errno = 0;

  /* Reading from wrong end of pipe.  */

  if (read (pip[1], &c, 1) != -1

      || errno != EBADF)

    err ("write pipe");

  errno = 0;

  if (close (pip[0]) != 0)

    err ("close");

  if (signal (SIGPIPE, SIG_IGN) != SIG_DFL)

    err ("signal");

  /* Writing to pipe with closed read end.  */

  if (write (pip[1], "argh", 1) != -1

      || errno != EPIPE)

    err ("write closed");

  printf ("pass\n");

  exit (0);

}