tests/cases/test-resize.m

   1 #include <TargetConditionals.h>
   2
   3 #if !(TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
   4
   5 #include <unistd.h>
   6 #include <sys/fcntl.h>
   7 #include <spawn.h>
   8
   9 #include <Foundation/Foundation.h>
  10
  11 #include "hfs-tests.h"
  12 #include "test-utils.h"
  13 #include "systemx.h"
  14 #include "disk-image.h"
  15
  16 TEST(resize)
  17
  18 static disk_image_t *di;
  19
  20 #define DISK_IMAGE "/tmp/hfs_resize.sparseimage"
  21
  22 int run_resize(__unused test_ctx_t *ctx)
  23 {
  24         di = disk_image_create(DISK_IMAGE, &(disk_image_opts_t){
  25                                                                                         .size = 100 * 1024 * 1024
  26                                                                                 });
  27
  28         int fd;
  29
  30         // Create two fragmented files
  31         for (int i = 0; i < 2; ++i) {
  32                 char *path;
  33                 asprintf(&path, "%s/fragmented-file.%d", di->mount_point, i);
  34
  35                 fd = open(path, O_RDWR | O_TRUNC | O_CREAT, 0666);
  36                 assert_with_errno(fd >= 0);
  37
  38                 /*
  39                  * First file we want near the end of the volume.  Second file
  40                  * at the beginning.
  41                  */
  42                 fstore_t fstore = {
  43                         .fst_flags = F_ALLOCATECONTIG | F_ALLOCATEALL,
  44                         .fst_posmode = F_VOLPOSMODE,
  45                         .fst_offset = i == 0 ? 80 * 1024 * 1024 : 4096,
  46                 };
  47
  48                 off_t len = 0;
  49
  50                 for (int j = 0; j < 64; ++j) {
  51                         if (len) {
  52                                 struct log2phys l2p = {
  53                                         .l2p_contigbytes = 4096,
  54                                         .l2p_devoffset   = len - 4096,
  55                                 };
  56
  57                                 assert_no_err(fcntl(fd, F_LOG2PHYS_EXT, &l2p));
  58
  59                                 fstore.fst_offset = l2p.l2p_devoffset + 16384;
  60                         }
  61
  62                         len += 4096;
  63
  64                         fstore.fst_length = len;
  65
  66                         assert_no_err(fcntl(fd, F_PREALLOCATE, &fstore));
  67                 }
  68
  69                 assert_no_err(ftruncate(fd, len));
  70
  71                 assert_no_err(close(fd));
  72         }
  73
  74         assert(!systemx("/usr/sbin/diskutil", SYSTEMX_QUIET, "resizeVolume", di->mount_point, "40m", NULL));
  75
  76         return 0;
  77 }
  78
  79 #endif // !(TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)