tree cabd1e41ddca50766bb60c8255288e3a5b95ded8
parent 5df00923536ccc75731e380828323681bb93c660
author David Anderson <dvander@google.com> 1552524941 -0700
committer David Anderson <dvander@google.com> 1552528873 -0700

libfiemap_writer: Calculate FIBMAP blocks correctly.

FIBMAP blocks are returned in FIGETBSZ units, which means the number of
blocks also needs to be determined by FIGETBSZ. Using the stat blocksize
is incorrect. On VFAT, FIGETBSZ returns 512 whereas st_blksize is 32768.

Bug: 126230649
Test: fiemap_writer_test gtest
Change-Id: Id0a667936ff9c0b60b1e8f72920cf62ceece1657