libio/tst-ext2.c

   1 #include <stdio.h>
   2 #include <stdio_ext.h>
   3
   4
   5 static char *fname;
   6
   7 #define PREPARE(argc, argv) \
   8   do {                                                                  \
   9     int fd = create_temp_file ("tst-ext2", &fname);                     \
  10     if (fd == -1)                                                       \
  11       {                                                                 \
  12         puts ("cannot create temporary file");                          \
  13         exit (1);                                                       \
  14       }                                                                 \
  15     close (fd);                                                         \
  16   } while (0)
  17
  18
  19 static int
  20 do_test (void)
  21 {
  22   int res = 0;
  23
  24   FILE *fp;
  25
  26   fp = fopen (fname, "w");
  27   printf ("Initial state for write-only stream: %d %d\n",
  28           __freading (fp) != 0, __fwriting (fp) != 0);
  29   res |= ((__freading (fp) != 0) != 0
  30           || (__fwriting (fp) != 0) != 1);
  31   fclose (fp);
  32
  33   fp = fopen (fname, "r");
  34   printf ("Initial state for read-only stream:  %d %d\n",
  35           __freading (fp) != 0, __fwriting (fp) != 0);
  36   res |= ((__freading (fp) != 0) != 1
  37           || (__fwriting (fp) != 0) != 0);
  38   fclose (fp);
  39
  40   fp = fopen (fname, "r+");
  41   printf ("Initial state for read-write stream: %d %d\n",
  42           __freading (fp) != 0, __fwriting (fp) != 0);
  43   res |= ((__freading (fp) != 0) != 0
  44           || (__fwriting (fp) != 0) != 0);
  45   fclose (fp);
  46
  47   fp = fopen (fname, "w+");
  48   printf ("Initial state for read-write stream: %d %d\n",
  49           __freading (fp) != 0, __fwriting (fp) != 0);
  50   res |= ((__freading (fp) != 0) != 0
  51           || (__fwriting (fp) != 0) != 0);
  52   fclose (fp);
  53
  54   return res;
  55 }
  56
  57 #define TEST_FUNCTION do_test ()
  58 #include "../test-skeleton.c"