195 Need replacement for nfs/lockd+klm
Reviewed by: Gordon Ross <gordon.ross@nexenta.com>
Reviewed by: Jeremy Jones <jeremy@delphix.com>
Reviewed by: Jeff Biseda <jbiseda@delphix.com>

@@ -21,10 +21,14 @@
 /*
  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
+/*
+ * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
+ */
+
 #include <sys/types.h>
 #include <sys/sysmacros.h>
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/fcntl.h>

@@ -44,11 +48,13 @@
 static void print_shares(struct vnode *);
 static void print_share(struct shrlock *);
 #endif
 
 static int isreadonly(struct vnode *);
+static void do_cleanshares(struct vnode *, pid_t, int32_t);
 
+
 /*
  * Add the share reservation shr to vp.
  */
 int
 add_share(struct vnode *vp, struct shrlock *shr)

@@ -333,19 +339,45 @@
  * the given file.
  */
 void
 cleanshares(struct vnode *vp, pid_t pid)
 {
+        do_cleanshares(vp, pid, 0);
+}
+
+/*
+ * Cleanup all remote share reservations that
+ * were made by the given sysid on given vnode.
+ */
+void
+cleanshares_by_sysid(struct vnode *vp, int32_t sysid)
+{
+        if (sysid == 0)
+                return;
+
+        do_cleanshares(vp, 0, sysid);
+}
+
+/*
+ * Cleanup share reservations on given vnode made
+ * by the either given pid or sysid.
+ * If sysid is 0, remove all shares made by given pid,
+ * otherwise all shares made by the given sysid will
+ * be removed.
+ */
+static void
+do_cleanshares(struct vnode *vp, pid_t pid, int32_t sysid)
+{
         struct shrlock shr;
 
         if (vp->v_shrlocks == NULL)
                 return;
 
         shr.s_access = 0;
         shr.s_deny = 0;
         shr.s_pid = pid;
-        shr.s_sysid = 0;
+        shr.s_sysid = sysid;
         shr.s_own_len = 0;
         shr.s_owner = NULL;
 
         (void) del_share(vp, &shr);
 }