Build 18252 (Skip Ahead)

For general Windows information on build 18252 visit the Windows Blog.

WSL

• Move init and bsdtar binaries out of lxssmanager dll and into a separate tools folder
• Fix race around closing file descriptor when using CLONE_FILES
• Handle optional fields in /proc/pid/mountinfo when translating DrvFs paths
• Allow DrvFs mknod to succeed without metadata support for S_IFREG
• Readonly files created on DrvFs should have the readonly attribute set [GH 3411]
• Add /sbin/mount.drvfs helper to handle DrvFs mounting
• Use POSIX rename in DrvFs.
• Allow path translation on volumes without a volume GUID.