io/tst-posix_fallocate.c

   1 #include <fcntl.h>
   2 #include <sys/stat.h>
   3
   4 static void do_prepare (void);
   5 #define PREPARE(argc, argv) do_prepare ()
   6 static int do_test (void);
   7 #define TEST_FUNCTION do_test ()
   8 #include <test-skeleton.c>
   9
  10 static int fd;
  11
  12 static void
  13 do_prepare (void)
  14 {
  15   fd = create_temp_file ("tst-posix_fallocate.", NULL);
  16   if (fd == -1)
  17     {
  18       printf ("cannot create temporary file: %m\n");
  19       exit (1);
  20     }
  21 }
  22
  23
  24 static int
  25 do_test (void)
  26 {
  27   struct stat64 st;
  28
  29   if (fstat64 (fd, &st) != 0)
  30     {
  31       puts ("1st fstat failed");
  32       return 1;
  33     }
  34
  35   if (st.st_size != 0)
  36     {
  37       puts ("file not created with size 0");
  38       return 1;
  39     }
  40
  41   if (posix_fallocate (fd, 512, 768) != 0)
  42     {
  43       puts ("1st posix_fallocate call failed");
  44       return 1;
  45     }
  46
  47   if (fstat64 (fd, &st) != 0)
  48     {
  49       puts ("2nd fstat failed");
  50       return 1;
  51     }
  52
  53   if (st.st_size != 512 + 768)
  54     {
  55       printf ("file size after first posix_fallocate call is %llu, expected %u\n",
  56               (unsigned long long int) st.st_size, 512u + 768u);
  57       return 1;
  58     }
  59
  60   if (posix_fallocate (fd, 0, 1024) != 0)
  61     {
  62       puts ("2nd posix_fallocate call failed");
  63       return 1;
  64     }
  65
  66   if (fstat64 (fd, &st) != 0)
  67     {
  68       puts ("3rd fstat failed");
  69       return 1;
  70     }
  71
  72   if (st.st_size != 512 + 768)
  73     {
  74       puts ("file size changed in second posix_fallocate");
  75       return 1;
  76     }
  77
  78   if (posix_fallocate (fd, 2048, 64) != 0)
  79     {
  80       puts ("3rd posix_fallocate call failed");
  81       return 1;
  82     }
  83
  84   if (fstat64 (fd, &st) != 0)
  85     {
  86       puts ("4th fstat failed");
  87       return 1;
  88     }
  89
  90   if (st.st_size != 2048 + 64)
  91     {
  92       printf ("file size after first posix_fallocate call is %llu, expected %u\n",
  93               (unsigned long long int) st.st_size, 2048u + 64u);
  94       return 1;
  95     }
  96
  97   close (fd);
  98
  99   return 0;
 100 }