#include <errno.h>

#include <error.h>

#include <fcntl.h>

#include <stdio.h>

#include <unistd.h>

static void do_prepare (void);

#define PREPARE(argc, argv) do_prepare ()

static int do_test (void);

#define TEST_FUNCTION do_test ()

#include <test-skeleton.c>

static int temp_fd;

static void

do_prepare (void)

{

  char *temp_file;

  temp_fd = create_temp_file ("tst-ttyname_r.", &temp_file);

  if (temp_fd == -1)

    error (1, errno, "cannot create temporary file");

}

static int

do_test (void)

{

  int ret = 0;

  char buf[sysconf (_SC_TTY_NAME_MAX) + 1];

  int res = ttyname_r (-1, buf, sizeof (buf));

  if (res != EBADF)

    {

      printf ("1st ttyname_r returned with res %d\n", res);

      ret++;

    }

  res = ttyname_r (temp_fd, buf, sizeof (buf));

  if (res != ENOTTY)

    {

      printf ("2nd ttyname_r returned with res %d\n", res);

      ret++;

    }

  return ret;

}