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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy is of the CDDL is also available via the Internet
* at http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
*/
/*
* NFS Lock Manager, client-side
* Note: depends on (links with) klmmod
*
* This file contains all the external entry points of klmops.
* Basically, this is the "glue" to the BSD nlm code.
*/
#include <sys/types.h>
#include <sys/errno.h>
#include <sys/modctl.h>
#include <sys/flock.h>
#include <nfs/lm.h>
#include <rpcsvc/nlm_prot.h>
#include "nlm_impl.h"
static struct modlmisc modlmisc = {
&mod_miscops, "lock mgr calls"
};
static struct modlinkage modlinkage = {
MODREV_1, &modlmisc, NULL
};
/*
* ****************************************************************
* module init, fini, info
*/
int
_init()
{
return (mod_install(&modlinkage));
}
int
_fini()
{
/* Don't unload. */
return (EBUSY);
}
int
_info(struct modinfo *modinfop)
{
return (mod_info(&modlinkage, modinfop));
}
/*
* ****************************************************************
* Stubs listed in modstubs.s
* These are called from fs/nfs
*/
/*
* NFSv2 lock/unlock. Called by nfs_frlock()
* Uses NLM version 1 (NLM_VERS)
*/
int
lm_frlock(struct vnode *vp, int cmd, struct flock64 *flk, int flags,
u_offset_t off, struct cred *cr, struct netobj *fh,
struct flk_callback *flcb)
{
return (nlm_frlock(vp, cmd, flk, flags, off,
cr, fh, flcb, NLM_VERS));
}
/*
* NFSv3 lock/unlock. Called by nfs3_frlock()
* Uses NLM version 4 (NLM4_VERS)
*/
int
lm4_frlock(struct vnode *vp, int cmd, struct flock64 *flk, int flags,
u_offset_t off, struct cred *cr, struct netobj *fh,
struct flk_callback *flcb)
{
int err;
err = nlm_frlock(vp, cmd, flk, flags, off,
cr, fh, flcb, NLM4_VERS);
return (err);
}
/*
* NFSv2 shrlk/unshrlk. See nfs_shrlock
* Uses NLM version 3 (NLM_VERSX)
*/
int
lm_shrlock(struct vnode *vp, int cmd,
struct shrlock *shr, int flags, struct netobj *fh)
{
return (nlm_shrlock(vp, cmd, shr, flags, fh, NLM_VERSX));
}
/*
* NFSv3 shrlk/unshrlk. See nfs3_shrlock
* Uses NLM version 4 (NLM4_VERS)
*/
int
lm4_shrlock(struct vnode *vp, int cmd,
struct shrlock *shr, int flags, struct netobj *fh)
{
return (nlm_shrlock(vp, cmd, shr, flags, fh, NLM4_VERS));
}
/*
* Helper for nfs_lockrelease.
*/
void
lm_register_lock_locally(struct vnode *vp, struct lm_sysid *ls,
struct flock64 *flk, int flags, u_offset_t offset)
{
nlm_register_lock_locally(vp, (struct nlm_host *)ls,
flk, flags, offset);
}
/*
* Old RPC service dispatch functions, no longer used.
* Here only to satisfy modstubs.s references.
*/
void
lm_nlm_dispatch(struct svc_req *req, SVCXPRT *xprt)
{
_NOTE(ARGUNUSED(req, xprt))
}
void
lm_nlm4_dispatch(struct svc_req *req, SVCXPRT *xprt)
{
_NOTE(ARGUNUSED(req, xprt))
}
/*
* Old internal functions used for reclaiming locks
* our NFS client holds after some server restarts.
* The new NLM code does this differently, so these
* are here only to satisfy modstubs.s references.
*/
void
lm_nlm_reclaim(struct vnode *vp, struct flock64 *flkp)
{
_NOTE(ARGUNUSED(vp, flkp))
}
void
lm_nlm4_reclaim(struct vnode *vp, struct flock64 *flkp)
{
_NOTE(ARGUNUSED(vp, flkp))
}
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