What is the block size of the iphone filesystem?

Question

Is it worth it for me to compress a 1000 byte file to a 300 byte file? or will the filesystem space consumption be the same?

I'm looking at storing 10k less than 4k files on my iphone and I'm curious if I'll see space saving by compressing them.

Thank you,

Carl

Answer 1

The iPhone uses an HFSX filesystem, with an 8k block size on the user partition:

int main(int argc, char *argv[]) {
  struct statfs *mntbufp = NULL;
  getmntinfo(&mntbufp, 0);

  unsigned i, count = 0;

  count = getmntinfo(&mntbufp, 0);
  for (i=0; i<count; i++)
  {
    char *volName = mntbufp[i].f_mntonname;
    printf("Volume %s blocksize: %lu\n", volName, mntbufp[i].f_bsize);
  }

  return 0;
}

returns

Volume / blocksize: 8192
Volume /dev blocksize: 512
Volume /private/var blocksize: 8192
Volume /Developer blocksize: 4096