tree a2a6c0226ea0f72536477dff2e123245a3621d9d
parent dcff09f124f71d1d4fe61eb63c79e52f488ac22e
author Chuck Lever <chuck.lever@oracle.com> 1223052644 -0400
committer J. Bruce Fields <bfields@citi.umich.edu> 1223067755 -0400

lockd: Add helper to sanity check incoming NOTIFY requests

lockd accepts SM_NOTIFY calls only from a privileged process on the
local system.  If lockd uses an AF_INET6 listener, the sender's address
(ie the local rpc.statd) will be the IPv6 loopback address, not the
IPv4 loopback address.

Make sure the privilege test in nlmsvc_proc_sm_notify() and
nlm4svc_proc_sm_notify() works for both AF_INET and AF_INET6 family
addresses by refactoring the test into a helper and adding support for
IPv6 addresses.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>