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freebsd-skq/sys/nlm/nlm_prot_xdr.c
dfr 79d2dfdaa6 Add the new kernel-mode NFS Lock Manager. To use it instead of the 
user-mode lock manager, build a kernel with the NFSLOCKD option and
add '-k' to 'rpc_lockd_flags' in rc.conf.

Highlights include:

* Thread-safe kernel RPC client - many threads can use the same RPC
  client handle safely with replies being de-multiplexed at the socket
  upcall (typically driven directly by the NIC interrupt) and handed
  off to whichever thread matches the reply. For UDP sockets, many RPC
  clients can share the same socket. This allows the use of a single
  privileged UDP port number to talk to an arbitrary number of remote
  hosts.

* Single-threaded kernel RPC server. Adding support for multi-threaded
  server would be relatively straightforward and would follow
  approximately the Solaris KPI. A single thread should be sufficient
  for the NLM since it should rarely block in normal operation.

* Kernel mode NLM server supporting cancel requests and granted
  callbacks. I've tested the NLM server reasonably extensively - it
  passes both my own tests and the NFS Connectathon locking tests
  running on Solaris, Mac OS X and Ubuntu Linux.

* Userland NLM client supported. While the NLM server doesn't have
  support for the local NFS client's locking needs, it does have to
  field async replies and granted callbacks from remote NLMs that the
  local client has contacted. We relay these replies to the userland
  rpc.lockd over a local domain RPC socket.

* Robust deadlock detection for the local lock manager. In particular
  it will detect deadlocks caused by a lock request that covers more
  than one blocking request. As required by the NLM protocol, all
  deadlock detection happens synchronously - a user is guaranteed that
  if a lock request isn't rejected immediately, the lock will
  eventually be granted. The old system allowed for a 'deferred
  deadlock' condition where a blocked lock request could wake up and
  find that some other deadlock-causing lock owner had beaten them to
  the lock.

* Since both local and remote locks are managed by the same kernel
  locking code, local and remote processes can safely use file locks
  for mutual exclusion. Local processes have no fairness advantage
  compared to remote processes when contending to lock a region that
  has just been unlocked - the local lock manager enforces a strict
  first-come first-served model for both local and remote lockers.

Sponsored by:	Isilon Systems
PR:		95247 107555 115524 116679
MFC after:	2 weeks
2008-03-26 15:23:12 +00:00

455 lines
8.6 KiB
C
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/*
* Please do not edit this file.
* It was generated using rpcgen.
*/
#include "nlm_prot.h"
#include <sys/cdefs.h>
#ifndef lint
/*static char sccsid[] = "from: @(#)nlm_prot.x 1.8 87/09/21 Copyr 1987 Sun Micro";*/
/*static char sccsid[] = "from: * @(#)nlm_prot.x 2.1 88/08/01 4.0 RPCSRC";*/
__RCSID("$NetBSD: nlm_prot.x,v 1.6 2000/06/07 14:30:15 bouyer Exp $");
#endif /* not lint */
__FBSDID("$FreeBSD$");
bool_t
xdr_nlm_stats(XDR *xdrs, nlm_stats *objp)
{
if (!xdr_enum(xdrs, (enum_t *)objp))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm_holder(XDR *xdrs, nlm_holder *objp)
{
if (!xdr_bool(xdrs, &objp->exclusive))
return (FALSE);
if (!xdr_int(xdrs, &objp->svid))
return (FALSE);
if (!xdr_netobj(xdrs, &objp->oh))
return (FALSE);
if (!xdr_u_int(xdrs, &objp->l_offset))
return (FALSE);
if (!xdr_u_int(xdrs, &objp->l_len))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm_testrply(XDR *xdrs, nlm_testrply *objp)
{
if (!xdr_nlm_stats(xdrs, &objp->stat))
return (FALSE);
switch (objp->stat) {
case nlm_denied:
if (!xdr_nlm_holder(xdrs, &objp->nlm_testrply_u.holder))
return (FALSE);
break;
default:
break;
}
return (TRUE);
}
bool_t
xdr_nlm_stat(XDR *xdrs, nlm_stat *objp)
{
if (!xdr_nlm_stats(xdrs, &objp->stat))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm_res(XDR *xdrs, nlm_res *objp)
{
if (!xdr_netobj(xdrs, &objp->cookie))
return (FALSE);
if (!xdr_nlm_stat(xdrs, &objp->stat))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm_testres(XDR *xdrs, nlm_testres *objp)
{
if (!xdr_netobj(xdrs, &objp->cookie))
return (FALSE);
if (!xdr_nlm_testrply(xdrs, &objp->stat))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm_lock(XDR *xdrs, nlm_lock *objp)
{
if (!xdr_string(xdrs, &objp->caller_name, LM_MAXSTRLEN))
return (FALSE);
if (!xdr_netobj(xdrs, &objp->fh))
return (FALSE);
if (!xdr_netobj(xdrs, &objp->oh))
return (FALSE);
if (!xdr_int(xdrs, &objp->svid))
return (FALSE);
if (!xdr_u_int(xdrs, &objp->l_offset))
return (FALSE);
if (!xdr_u_int(xdrs, &objp->l_len))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm_lockargs(XDR *xdrs, nlm_lockargs *objp)
{
if (!xdr_netobj(xdrs, &objp->cookie))
return (FALSE);
if (!xdr_bool(xdrs, &objp->block))
return (FALSE);
if (!xdr_bool(xdrs, &objp->exclusive))
return (FALSE);
if (!xdr_nlm_lock(xdrs, &objp->alock))
return (FALSE);
if (!xdr_bool(xdrs, &objp->reclaim))
return (FALSE);
if (!xdr_int(xdrs, &objp->state))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm_cancargs(XDR *xdrs, nlm_cancargs *objp)
{
if (!xdr_netobj(xdrs, &objp->cookie))
return (FALSE);
if (!xdr_bool(xdrs, &objp->block))
return (FALSE);
if (!xdr_bool(xdrs, &objp->exclusive))
return (FALSE);
if (!xdr_nlm_lock(xdrs, &objp->alock))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm_testargs(XDR *xdrs, nlm_testargs *objp)
{
if (!xdr_netobj(xdrs, &objp->cookie))
return (FALSE);
if (!xdr_bool(xdrs, &objp->exclusive))
return (FALSE);
if (!xdr_nlm_lock(xdrs, &objp->alock))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm_unlockargs(XDR *xdrs, nlm_unlockargs *objp)
{
if (!xdr_netobj(xdrs, &objp->cookie))
return (FALSE);
if (!xdr_nlm_lock(xdrs, &objp->alock))
return (FALSE);
return (TRUE);
}
bool_t
xdr_fsh_mode(XDR *xdrs, fsh_mode *objp)
{
if (!xdr_enum(xdrs, (enum_t *)objp))
return (FALSE);
return (TRUE);
}
bool_t
xdr_fsh_access(XDR *xdrs, fsh_access *objp)
{
if (!xdr_enum(xdrs, (enum_t *)objp))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm_share(XDR *xdrs, nlm_share *objp)
{
if (!xdr_string(xdrs, &objp->caller_name, LM_MAXSTRLEN))
return (FALSE);
if (!xdr_netobj(xdrs, &objp->fh))
return (FALSE);
if (!xdr_netobj(xdrs, &objp->oh))
return (FALSE);
if (!xdr_fsh_mode(xdrs, &objp->mode))
return (FALSE);
if (!xdr_fsh_access(xdrs, &objp->access))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm_shareargs(XDR *xdrs, nlm_shareargs *objp)
{
if (!xdr_netobj(xdrs, &objp->cookie))
return (FALSE);
if (!xdr_nlm_share(xdrs, &objp->share))
return (FALSE);
if (!xdr_bool(xdrs, &objp->reclaim))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm_shareres(XDR *xdrs, nlm_shareres *objp)
{
if (!xdr_netobj(xdrs, &objp->cookie))
return (FALSE);
if (!xdr_nlm_stats(xdrs, &objp->stat))
return (FALSE);
if (!xdr_int(xdrs, &objp->sequence))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm_notify(XDR *xdrs, nlm_notify *objp)
{
if (!xdr_string(xdrs, &objp->name, MAXNAMELEN))
return (FALSE);
if (!xdr_long(xdrs, &objp->state))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm4_stats(XDR *xdrs, nlm4_stats *objp)
{
if (!xdr_enum(xdrs, (enum_t *)objp))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm4_stat(XDR *xdrs, nlm4_stat *objp)
{
if (!xdr_nlm4_stats(xdrs, &objp->stat))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm4_holder(XDR *xdrs, nlm4_holder *objp)
{
if (!xdr_bool(xdrs, &objp->exclusive))
return (FALSE);
if (!xdr_uint32_t(xdrs, &objp->svid))
return (FALSE);
if (!xdr_netobj(xdrs, &objp->oh))
return (FALSE);
if (!xdr_uint64_t(xdrs, &objp->l_offset))
return (FALSE);
if (!xdr_uint64_t(xdrs, &objp->l_len))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm4_lock(XDR *xdrs, nlm4_lock *objp)
{
if (!xdr_string(xdrs, &objp->caller_name, MAXNAMELEN))
return (FALSE);
if (!xdr_netobj(xdrs, &objp->fh))
return (FALSE);
if (!xdr_netobj(xdrs, &objp->oh))
return (FALSE);
if (!xdr_uint32_t(xdrs, &objp->svid))
return (FALSE);
if (!xdr_uint64_t(xdrs, &objp->l_offset))
return (FALSE);
if (!xdr_uint64_t(xdrs, &objp->l_len))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm4_share(XDR *xdrs, nlm4_share *objp)
{
if (!xdr_string(xdrs, &objp->caller_name, MAXNAMELEN))
return (FALSE);
if (!xdr_netobj(xdrs, &objp->fh))
return (FALSE);
if (!xdr_netobj(xdrs, &objp->oh))
return (FALSE);
if (!xdr_fsh_mode(xdrs, &objp->mode))
return (FALSE);
if (!xdr_fsh_access(xdrs, &objp->access))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm4_testrply(XDR *xdrs, nlm4_testrply *objp)
{
if (!xdr_nlm4_stats(xdrs, &objp->stat))
return (FALSE);
switch (objp->stat) {
case nlm_denied:
if (!xdr_nlm4_holder(xdrs, &objp->nlm4_testrply_u.holder))
return (FALSE);
break;
default:
break;
}
return (TRUE);
}
bool_t
xdr_nlm4_testres(XDR *xdrs, nlm4_testres *objp)
{
if (!xdr_netobj(xdrs, &objp->cookie))
return (FALSE);
if (!xdr_nlm4_testrply(xdrs, &objp->stat))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm4_testargs(XDR *xdrs, nlm4_testargs *objp)
{
if (!xdr_netobj(xdrs, &objp->cookie))
return (FALSE);
if (!xdr_bool(xdrs, &objp->exclusive))
return (FALSE);
if (!xdr_nlm4_lock(xdrs, &objp->alock))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm4_res(XDR *xdrs, nlm4_res *objp)
{
if (!xdr_netobj(xdrs, &objp->cookie))
return (FALSE);
if (!xdr_nlm4_stat(xdrs, &objp->stat))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm4_lockargs(XDR *xdrs, nlm4_lockargs *objp)
{
if (!xdr_netobj(xdrs, &objp->cookie))
return (FALSE);
if (!xdr_bool(xdrs, &objp->block))
return (FALSE);
if (!xdr_bool(xdrs, &objp->exclusive))
return (FALSE);
if (!xdr_nlm4_lock(xdrs, &objp->alock))
return (FALSE);
if (!xdr_bool(xdrs, &objp->reclaim))
return (FALSE);
if (!xdr_int(xdrs, &objp->state))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm4_cancargs(XDR *xdrs, nlm4_cancargs *objp)
{
if (!xdr_netobj(xdrs, &objp->cookie))
return (FALSE);
if (!xdr_bool(xdrs, &objp->block))
return (FALSE);
if (!xdr_bool(xdrs, &objp->exclusive))
return (FALSE);
if (!xdr_nlm4_lock(xdrs, &objp->alock))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm4_unlockargs(XDR *xdrs, nlm4_unlockargs *objp)
{
if (!xdr_netobj(xdrs, &objp->cookie))
return (FALSE);
if (!xdr_nlm4_lock(xdrs, &objp->alock))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm4_shareargs(XDR *xdrs, nlm4_shareargs *objp)
{
if (!xdr_netobj(xdrs, &objp->cookie))
return (FALSE);
if (!xdr_nlm4_share(xdrs, &objp->share))
return (FALSE);
if (!xdr_bool(xdrs, &objp->reclaim))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm4_shareres(XDR *xdrs, nlm4_shareres *objp)
{
if (!xdr_netobj(xdrs, &objp->cookie))
return (FALSE);
if (!xdr_nlm4_stats(xdrs, &objp->stat))
return (FALSE);
if (!xdr_int(xdrs, &objp->sequence))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm_sm_status(XDR *xdrs, nlm_sm_status *objp)
{
if (!xdr_string(xdrs, &objp->mon_name, LM_MAXSTRLEN))
return (FALSE);
if (!xdr_int(xdrs, &objp->state))
return (FALSE);
if (!xdr_opaque(xdrs, objp->priv, 16))
return (FALSE);
return (TRUE);
}
bool_t
xdr_nlm4_notify(XDR *xdrs, nlm4_notify *objp)
{
if (!xdr_string(xdrs, &objp->name, MAXNAMELEN))
return (FALSE);
if (!xdr_int32_t(xdrs, &objp->state))
return (FALSE);
return (TRUE);
}
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