io/tst-posix_fallocate.c

   1 #include <sys/stat.h>
   2
   3 static void do_prepare (void);
   4 #define PREPARE(argc, argv) do_prepare ()
   5 static int do_test (void);
   6 #define TEST_FUNCTION do_test ()
   7 #include <test-skeleton.c>
   8
   9 static int fd;
  10
  11 static void
  12 do_prepare (void)
  13 {
  14   fd = create_temp_file ("tst-posix_fallocate.", NULL);
  15   if (fd == -1)
  16     {
  17       printf ("cannot create temporary file: %m\n");
  18       exit (1);
  19     }
  20 }
  21
  22
  23 static int
  24 do_test (void)
  25 {
  26   struct stat64 st;
  27
  28   if (fstat64 (fd, &st) != 0)
  29     {
  30       puts ("1st fstat failed");
  31       return 1;
  32     }
  33
  34   if (st.st_size != 0)
  35     {
  36       puts ("file not created with size 0");
  37       return 1;
  38     }
  39
  40   if (posix_fallocate (fd, 512, 768) != 0)
  41     {
  42       puts ("1st posix_fallocate call failed");
  43       return 1;
  44     }
  45
  46   if (fstat64 (fd, &st) != 0)
  47     {
  48       puts ("2nd fstat failed");
  49       return 1;
  50     }
  51
  52   if (st.st_size != 512 + 768)
  53     {
  54       printf ("file size after first posix_fallocate call is %llu, expected %u\n",
  55               (unsigned long long int) st.st_size, 512u + 768u);
  56       return 1;
  57     }
  58
  59   if (posix_fallocate (fd, 0, 1024) != 0)
  60     {
  61       puts ("2nd posix_fallocate call failed");
  62       return 1;
  63     }
  64
  65   if (fstat64 (fd, &st) != 0)
  66     {
  67       puts ("3rd fstat failed");
  68       return 1;
  69     }
  70
  71   if (st.st_size != 512 + 768)
  72     {
  73       puts ("file size changed in second posix_fallocate");
  74       return 1;
  75     }
  76
  77   if (posix_fallocate (fd, 2048, 64) != 0)
  78     {
  79       puts ("3rd posix_fallocate call failed");
  80       return 1;
  81     }
  82
  83   if (fstat64 (fd, &st) != 0)
  84     {
  85       puts ("4th fstat failed");
  86       return 1;
  87     }
  88
  89   if (st.st_size != 2048 + 64)
  90     {
  91       printf ("file size after first posix_fallocate call is %llu, expected %u\n",
  92               (unsigned long long int) st.st_size, 2048u + 64u);
  93       return 1;
  94     }
  95
  96   close (fd);
  97
  98   return 0;
  99 }