tree c8f86d5e83d6272ec4f3e0406fbb6dd617e2964c
parent 28e2f39b85e0a4d0d093123562e70d8906c03bef
author Gilad Arnold <garnold@chromium.org> 1330544327 -0800
committer Gerrit <chrome-bot@google.com> 1330553645 -0800

A file descriptor closer that uses HANDLE_EINTR.

- A new flavor of ScopedFdCloser which wraps close() with HANDLE_EINTR,
  which will retry closing the file descriptor if the last close attempt
  was interrupted by EINTR. This appears to be a recommended practice
  per POSIX documentation.

- Both ScopedFdCloser and ScopedEintrSafeFdCloser ensure a successful
  close() prior to resetting the file descriptor.

- Better use of HANDLE_EINTR elsewhere: just realized that this macro
  returns the value of the last evaluation of its argument.

BUG=chromium-os:25397
TEST=Image builds properly; GPIO functionality works (x86-alex).

Change-Id: I3425bb580499c7138cd31917011662d33ffab8a6
Reviewed-on: https://gerrit.chromium.org/gerrit/17079
Reviewed-by: Andrew de los Reyes <adlr@chromium.org>
Reviewed-by: Darin Petkov <petkov@chromium.org>
Commit-Ready: Gilad Arnold <garnold@chromium.org>
Tested-by: Gilad Arnold <garnold@chromium.org>