tree 227f9194032d0deffcca6f9c9c52295f026f5869
parent 9caf6cca41c94e7e590188a4e06ffde75ef1f481
author Fyodor Kupolov <fkupolov@google.com> 1488245598 -0800
committer JP Sugarbroad <jpsugar@google.com> 1490051324 +0000

DO NOT MERGE
[DO NOT MERGE] Check bounds in offsetToPtr

Check whether specified offset belongs to mData.
Also added a default argument bufferSize to check the end offset.

Size of the ashmem descriptor can be modified between
ashmem_get_size_region call and mmap. createFromParcel method was updated
to check ashmem size again immediately after memory is mapped.

Test: manual - using the test app from the bug
Bug: 34128677
Change-Id: I3ecd1616a870ce20941ce9b20a1843d2b4295750
(cherry picked from commit 45e2e95c2ffeb2d978e2cce80b729ef6ada3b8d2)
(cherry picked from commit 23efadc807d753906edf0cb61e76ba50cde3ab39)