• Jim Garlick's avatar
    fs/9p: xattr: add trusted and security namespaces · d9a73859
    Jim Garlick authored
    Allow requests for security.* and trusted.* xattr name spaces
    to pass through to server.
    The new files are 99% cut and paste from fs/9p/xattr_user.c with the
    namespaces changed.  It has the intended effect in superficial testing.
    I do not know much detail about how these namespaces are used, but passing
    them through to the server, which can decide whether to handle them or not,
    seems reasonable.
    I want to support a use case where an ext4 file system is mounted via 9P,
    then re-exported via samba to windows clients in a cluster.  Windows wants
    to store xattrs such as security.NTACL.  This works when ext4 directly
    backs samba, but not when 9P is inserted.  This use case is documented here:
       http://code.google.com/p/diod/issues/detail?id=95Signed-off-by: default avatarJim Garlick <garlick@llnl.gov>
    Signed-off-by: default avatarEric Van Hensbergen <ericvh@gmail.com>
xattr_trusted.c 2.07 KB