• Tejun Heo's avatar
    kernfs: implement "trusted.*" xattr support · 2322392b
    Tejun Heo authored
    kernfs inherited "security.*" xattr support from sysfs.  This patch
    extends xattr support to "trusted.*" using simple_xattr_*().  As
    trusted xattrs are restricted to CAP_SYS_ADMIN, simple_xattr_*() which
    uses kernel memory for storage shouldn't be problematic.
    Note that the existing "security.*" support doesn't implement
    get/remove/list and the this patch only implements those ops for
    "trusted.*".  We probably want to extend those ops to include support
    for "security.*".
    This patch will allow using kernfs from cgroup which requires
    "trusted.*" xattr support.
    Signed-off-by: default avatarTejun Heo <tj@kernel.org>
    Cc: David P. Quigley <dpquigl@tycho.nsa.gov>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
inode.c 8.79 KB