From NetBSD; vdevgone, used for revoking access to device nodes when they

disappear (detach is coming).

2 files changed, 20 insertions, 2 deletions

diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index a44fa140711..ff120b78e79 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: vfs_subr.c,v 1.39 1999/05/31 17:34:48 millert Exp $	*/
+/*	$OpenBSD: vfs_subr.c,v 1.40 1999/08/08 00:34:38 niklas Exp $	*/
 /*	$NetBSD: vfs_subr.c,v 1.53 1996/04/22 01:39:13 christos Exp $	*/
 
 /*
@@ -1214,6 +1214,23 @@ vfinddev(dev, type, vpp)
 }
 
 /*
+ * Revoke all the vnodes corresponding to the specified minor number
+ * range (endpoints inclusive) of the specified major.
+ */
+void
+vdevgone(maj, minl, minh, type)
+	int maj, minl, minh;
+	enum vtype type;
+{
+	struct vnode *vp;
+	int mn;
+
+	for (mn = minl; mn <= minh; mn++)
+		if (vfinddev(makedev(maj, mn), type, &vp))
+			VOP_REVOKE(vp, REVOKEALL);
+}
+
+/*
  * Calculate the total number of references to a special device.
  */
 int
diff --git a/sys/sys/vnode.h b/sys/sys/vnode.h
index 89cbb8119e6..6ade92117cf 100644
--- a/sys/sys/vnode.h
+++ b/sys/sys/vnode.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: vnode.h,v 1.20 1999/02/26 02:48:36 art Exp $	*/
+/*	$OpenBSD: vnode.h,v 1.21 1999/08/08 00:34:38 niklas Exp $	*/
 /*	$NetBSD: vnode.h,v 1.38 1996/02/29 20:59:05 cgd Exp $	*/
 
 /*
@@ -464,6 +464,7 @@ int	vflush __P((struct mount *mp, struct vnode *vp, int flags));
 void	vntblinit __P((void));
 void    vn_initialize_syncerd __P((void));
 void	vwakeup __P((struct buf *));
+void	vdevgone __P((int, int, int, enum vtype));
 int 	vget __P((struct vnode *vp, int lockflag, struct proc *p));
 void 	vgone __P((struct vnode *vp));
 void    vgonel __P((struct vnode *, struct proc *));