1  #include <errno.h>
       2  #include <error.h>
       3  #include <fcntl.h>
       4  #include <stdio.h>
       5  #include <unistd.h>
       6  
       7  static void do_prepare (void);
       8  #define PREPARE(argc, argv) do_prepare ()
       9  static int do_test (void);
      10  #define TEST_FUNCTION do_test ()
      11  #include <test-skeleton.c>
      12  
      13  static int temp_fd;
      14  
      15  static void
      16  do_prepare (void)
      17  {
      18    char *temp_file;
      19    temp_fd = create_temp_file ("tst-ttyname_r.", &temp_file);
      20    if (temp_fd == -1)
      21      error (1, errno, "cannot create temporary file");
      22  }
      23  
      24  static int
      25  do_test (void)
      26  {
      27    int ret = 0;
      28    char buf[sysconf (_SC_TTY_NAME_MAX) + 1];
      29    int res = ttyname_r (-1, buf, sizeof (buf));
      30    if (res != EBADF)
      31      {
      32        printf ("1st ttyname_r returned with res %d\n", res);
      33        ret++;
      34      }
      35    res = ttyname_r (temp_fd, buf, sizeof (buf));
      36    if (res != ENOTTY)
      37      {
      38        printf ("2nd ttyname_r returned with res %d\n", res);
      39        ret++;
      40      }
      41    return ret;
      42  }