The kernel is actually not consistent in whether uids & gids
are signed or unsigned, and neither is our Java code, which
also commonly uses just 'int' for uid. In practice values
greater or equal to 2**31 often don't quite work right.
For example icmp sockets are enabled via a sysctl that
takes a minimum and maximum gid - and these are signed int32s.
Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Ia309eb99f71765e30510d6a253c1329c20719f21
2b0a6dce97