/* Test if F_DUPFD_CLOEXEC works right.
 * by Richard W.M. Jones.
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <assert.h>

int
main ()
{
  char *file = "/tmp/cloexec.tmp";
  int fd = creat (file, 0600);
  int fd2;
  int flags;

  assert (fd >= 0);

  fd2 = fcntl (fd, F_DUPFD_CLOEXEC, 0);
  assert (fd2 >= 0);

  flags = fcntl (fd2, F_GETFD);
  assert (flags >= 0);

  if ((flags & FD_CLOEXEC) == 0) {
    fprintf (stderr, "F_DUPFD_CLOEXEC failed to set FD_CLOEXEC flag!\n");
    exit (EXIT_FAILURE);
  }

  exit (EXIT_SUCCESS);
}