tree 3aeea0ce04ab9182dac98bf8f816962292f33606
parent 27290598eb02bcce628c4fc085114f7229e8df52
author Tatsushi Demachi <tdemachi@gmail.com> 1454248957 +0900
committer Tatsushi Demachi <tdemachi@gmail.com> 1454249798 +0900

Fix CopyOnWriteFs Stat to handle *os.PathError

CopyOnWriteFs Stat function only checks its base file system's file or
directory when its layer file system returns Stat error but if the layer
file system type is OsFs, it returns *os.PathError not syscall.ENOENT so
in this case, the base file system's file or directory is never checked.

This fixes the behavior above by expanding *os.PathError and repacking
the error code if the error type is *os.PathError.