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@Brian-Perkins Brian-Perkins released this 19 Dec 22:27
· 1367 commits to live since this release
17063
3b35b72

Build 17063

For general Windows information on build 17063 visit the Windows Blog.

WSL

  • DrvFs supports additional Linux metadata. This allows setting the owner and mode of files using chmod/chown, and also the creation of special files such as fifos, unix sockets and device files.

    This is disabled by default for now. To enable, mount DrvFs with the metadata option (to enable it on an existing mount, you must first unmount it):

    mount -t drvfs C: /mnt/c -o metadata

    Linux permissions are added as additional metadata to the file; they do not affect the Windows permissions. Remember, editing a file using a Windows editor may remove the metadata. In this case, the file will revert to its default permissions.

  • Added mount options to DrvFs to control files without metadata.

    • uid: the user ID used for the owner of all files.
    • gid: the group ID used for the owner of all files.
    • umask: an octal mask of permissions to exclude for all files and directories.
    • fmask: an octal mask of permissions to exclude for all regular files.
    • dmask: an octal mask of permissions to exclude for all directories.

    For example:

    mount -t drvfs C: /mnt/c -o uid=1000,gid=1000,umask=22,fmask=111

    Combine with the metadata option to specify default permissions for files without metadata.

  • Introduced a new environment variable, WSLENV, to configure how environment variables flow between WSL and Win32.

    For example:

    WSLENV=GOPATH/l:USERPROFILE/pu:DISPLAY

    WSLENV is a colon-delimited list of environment variables that can be included when launching WSL processes from Win32 or Win32 processes from WSL. Each variable can be suffixed with a slash followed by flags to specify how it is translated.

    • p: The value is a path that should be translated between WSL paths and Win32 paths.
    • l: The value is a list of paths. In WSL, it is a colon-delimited list. In Win32, it is a semicolon-delimited list.
    • u: The value should only be included when invoking WSL from Win32
    • w: The value should only be included when invoking Win32 from WSL

    You can set WSLENV in .bashrc or in the custom Windows environment for your user.

  • drvfs mounts correctly preserves timestamps from tar, cp -p (GH 1939)

  • drvfs symlinks report the correct size (GH 2641)

  • read/write works for very large IO sizes (GH 2653)

  • waitpid works with process group IDs (GH 2534)

  • significantly improved mmap performance for large reserve regions; improves ghc performance (GH 1671)

  • personality supports for READ_IMPLIES_EXEC; fixes maxima and clisp (GH 1185)

  • mprotect supports PROT_GROWSDOWN; fixes clisp (GH 1128)

  • page fault fixes in overcommit mode; fixes sbcl (GH 1128)

  • clone supports more flags combinations

  • Support select/epoll of epoll files (previously a no-op).

  • Notify ptrace of unimplemented syscalls.

  • Ignore interfaces that are not up when generating resolv.conf nameservers [GH 2694]

  • Enumerate network interfaces with no physical address. [GH 2685]

  • Additional bug fixes and improvements.

Linux tools available to developers on Windows

  • Windows Command line Toolchain includes bsdtar (tar) and curl.
    Read this blog to learn more about the addition of these two new tools and see how they’re shaping the developer experience on Windows.

  • AF_UNIX is available in the Windows Insider SDK (17061+).
    Read this blog to learn more about AF_UNIX and how developers on Windows can use it.

Console

  • No fixes.

LTP Results:

Testing in progress.

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