isReadonlyFilesystem() only matters for the code running
on the deivces, disable its implementation on Windows and Mac
Bug: 260973096
Test: build
Change-Id: Idefe4c874003cdaeb9fc212a71efc3fa266f2fcc
IsUpToDate() is one of the most often called functions, let's
make sure it only performs a syscall if it makes any sense and
the underlying file can really change.
Bug: 237583012
Test: build + boot + UTs
Change-Id: Ie5999ddadf10b56f35354d00ad3402b229ffa2c3
- char16_t is a distinct type, so stay consistent
with it throughout the code base.
- char16_t is defined as minimum size of 16 bits.
Since we mmap and cast data structures onto raw memory,
we need a precise definition (uint16_t), so we cast between
that (and static_assert that they are the same size).
Change-Id: I869c32637543bbcfb39d2643e7d9df10d33acd3c
