tree fa17347278bb2b3c013d5834491ce639bb6b1c1a
parent 044a0b4d49a11edfa13471ce20914b0514eb7e0e
author Doug Zongker <dougz@android.com> 1373391286 -0700
committer Doug Zongker <dougz@android.com> 1373391735 -0700

recovery: write partitions more conservatively

Write and verify partitions using write(2) and read(2) rather than the
stdio functions.  Read and write in 4kb blocks.  When writing, fsync()
every 1MB.

Bug: 9602014
Change-Id: Ie98ce38e857786fc0f4ebf36bb5ffc93b41bc96f