tree cbe7571571fbf2403415d14e8e0045ac6b31aef1
parent 42f81b83907c49e337c1ff4f4e75909afb502ff2
author Kelvin Zhang <zhangkelvin@google.com> 1664820520 -0700
committer Kelvin Zhang <zhangkelvin@google.com> 1665171473 -0700

Add Fd() method to file descriptor wrapper

This allows caller to use syscalls not listed as a method in
FileDescriptor class, or use async I/O mechanisms such as io_uring.

Bug: 250637970
Test: th
Change-Id: I60d1b069622343b73add4a829e9282547a33d39c