tree b04070034f8a941fe5d7e9e1b335a02784686bd5
parent 5fe0c2378884e68beb532f5890cc0e3539ac747b
author Al Viro <viro@zeniv.linux.org.uk> 1300143411 -0400
committer Al Viro <viro@zeniv.linux.org.uk> 1300144340 -0400

New AT_... flag: AT_EMPTY_PATH

For name_to_handle_at(2) we'll want both ...at()-style syscall that
would be usable for non-directory descriptors (with empty relative
pathname).  Introduce new flag (AT_EMPTY_PATH) to deal with that and
corresponding LOOKUP_EMPTY; teach user_path_at() and path_init() to
deal with the latter.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>