login/tst-grantpt.c

   1 #include <sys/types.h>
   2 #include <sys/stat.h>
   3 #include <fcntl.h>
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <errno.h>
   7 #include <string.h>
   8 #include <unistd.h>
   9
  10 static int
  11 test_ebadf (void)
  12 {
  13   int fd, ret, err;
  14
  15   fd = posix_openpt (O_RDWR);
  16   if (fd == -1)
  17     {
  18       printf ("posix_openpt(O_RDWR) failed\nerrno %d (%s)\n",
  19               errno, strerror (errno));
  20       /* We don't fail because of this; maybe the system does not have
  21          SUS pseudo terminals.  */
  22       return 0;
  23     }
  24   unlockpt (fd);
  25   close (fd);
  26
  27   ret = grantpt (fd);
  28   err = errno;
  29   if (ret != -1 || err != EBADF)
  30     {
  31       printf ("grantpt(): expected: return = %d, errno = %d\n", -1, EBADF);
  32       printf ("           got: return = %d, errno = %d\n", ret, err);
  33       return 1;
  34     }
  35   return 0;
  36 }
  37
  38 static int
  39 test_einval (void)
  40 {
  41   int fd, ret, err;
  42   const char file[] = "./grantpt-einval";
  43
  44   fd = open (file, O_RDWR | O_CREAT, 0600);
  45   if (fd == -1)
  46     {
  47       printf ("open(\"%s\", O_RDWR) failed\nerrno %d (%s)\n",
  48               file, errno, strerror (errno));
  49       return 0;
  50     }
  51   unlink (file);
  52
  53   ret = grantpt (fd);
  54   err = errno;
  55   if (ret != -1 || err != EINVAL)
  56     {
  57       printf ("grantpt(): expected: return = %d, errno = %d\n", -1, EINVAL);
  58       printf ("           got: return = %d, errno = %d\n", ret, err);
  59       ret = 1;
  60     }
  61   else
  62     ret = 0;
  63
  64   close (fd);
  65
  66   return ret;
  67 }
  68
  69 int
  70 main (void)
  71 {
  72   int result = 0;
  73
  74   result += test_ebadf ();
  75   result += test_einval ();
  76
  77   return result;
  78 }