Add support for flock(2) locks to the new NFSv4 client. I think this

should be ok, since the client now delays NFSv4 Close operations
until VOP_INACTIVE()/VOP_RECLAIM(). As such, there should be no
risk that the NFSv4 Open is closed while an associated byte range lock
still exists.

Tested by:	avg
MFC after:	2 weeks

2 files changed, 9 insertions, 3 deletions

diff --git a/sys/fs/nfsclient/nfs_clport.c b/sys/fs/nfsclient/nfs_clport.c
index ff2127b..4d88bd2 100644
--- a/sys/fs/nfsclient/nfs_clport.c
+++ b/sys/fs/nfsclient/nfs_clport.c
@@ -530,8 +530,11 @@ nfscl_filllockowner(void *id, u_int8_t *cp, int flags)
 		*cp++ = tl.cval[1];
 		*cp++ = tl.cval[2];
 		*cp = tl.cval[3];
+	} else if ((flags & F_FLOCK) != 0) {
+		bcopy(&id, cp, sizeof(id));
+		bzero(&cp[sizeof(id)], NFSV4CL_LOCKNAMELEN - sizeof(id));
 	} else {
-		printf("nfscl_filllockowner: not F_POSIX\n");
+		printf("nfscl_filllockowner: not F_POSIX or F_FLOCK\n");
 		bzero(cp, NFSV4CL_LOCKNAMELEN);
 	}
 }
diff --git a/sys/fs/nfsclient/nfs_clvnops.c b/sys/fs/nfsclient/nfs_clvnops.c
index 9f7ac0e..3e1c66d 100644
--- a/sys/fs/nfsclient/nfs_clvnops.c
+++ b/sys/fs/nfsclient/nfs_clvnops.c
@@ -2884,8 +2884,11 @@ nfs_advlock(struct vop_advlock_args *ap)
 	int ret, error = EOPNOTSUPP;
 	u_quad_t size;
 	
-	if (NFS_ISV4(vp) && (ap->a_flags & F_POSIX)) {
-		cred = p->p_ucred;
+	if (NFS_ISV4(vp) && (ap->a_flags & (F_POSIX | F_FLOCK)) != 0) {
+		if ((ap->a_flags & F_POSIX) != 0)
+			cred = p->p_ucred;
+		else
+			cred = td->td_ucred;
 		vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
 		if (vp->v_iflag & VI_DOOMED) {
 			VOP_UNLOCK(vp, 0);