tree 47f5744245fbd2096e0636ebf9e558fdd0f9cc12
parent 7bebf78305685210744b74f563cfc8d1dbcd7be7
author Nathan Hawes <nhawes@apple.com> 1610696032 +1000
committer Copybara-Service <copybara-worker@google.com> 1612517503 -0800

[VFS] Add support to RedirectingFileSystem for mapping a virtual directory to one in the external FS.

Previously file entries in the -ivfsoverlay yaml could map to a file in the
external file system, but directories had to list their contents in the form of
other file entries or directories. Allowing directory entries to map to a
directory in the external file system makes it possible to present an external
directory's contents in a different location and (in combination with the
'fallthrough' option) overlay one directory's contents on top of another.

rdar://problem/72485443
Differential Revision: https://reviews.llvm.org/D94844

GitOrigin-RevId: ecb00a77624c94ce38fccf9b4095e026ecf14aed