lockd: Use xdrgen XDR functions for the NLMv3 SM_NOTIFY procedure

Continue the xdrgen migration by converting NLMv3 SM_NOTIFY,
a private callback from statd to notify lockd when a remote
host has rebooted.  The procedure now uses
nlm_svc_decode_nlm_notifyargs and nlm_svc_encode_void,
generated from the NLM version 3 protocol specification.

A new struct nlm_notifyargs_wrapper bridges between the
xdrgen-generated nlm_notifyargs and the lockd_reboot
structure expected by nlm_host_rebooted().  The wrapper
contains both the xdrgen-decoded arguments and a reboot
field for the existing API.

Setting pc_argzero to zero is safe because the generated
decoder fills argp->xdrgen before the procedure runs, so
the zeroing memset performed by the dispatch layer is no
longer needed.

Setting pc_xdrressize to XDR_void reflects that SM_NOTIFY
returns no data; the previous value of St over-reserved a
status word in the reply buffer.

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

0 files changed, 0 insertions, 0 deletions