Add revoke_and_destroy_dev(), to be used by devices which decide when

they choose to destroy themselves without regard to whether or not
they are open.

3 files changed, 15 insertions, 0 deletions

diff --git a/sys/kern/kern_conf.c b/sys/kern/kern_conf.c
index a9264a2..4263f92 100644
--- a/sys/kern/kern_conf.c
+++ b/sys/kern/kern_conf.c
@@ -362,6 +362,19 @@ make_dev_alias(dev_t pdev, const char *fmt, ...)
 }
 
 void
+revoke_and_destroy_dev(dev_t dev)
+{
+	struct vnode *vp;
+
+	GIANT_REQUIRED;
+
+	vp = SLIST_FIRST(&dev->si_hlist);
+	if (vp != NULL)
+		VOP_REVOKE(vp, REVOKEALL);
+	destroy_dev(dev);
+}
+
+void
 destroy_dev(dev_t dev)
 {
 	
diff --git a/sys/sys/conf.h b/sys/sys/conf.h
index f2bba3a..130f5cb 100644
--- a/sys/sys/conf.h
+++ b/sys/sys/conf.h
@@ -317,6 +317,7 @@ int	cdevsw_add __P((struct cdevsw *new));
 int	cdevsw_remove __P((struct cdevsw *old));
 int	count_dev __P((dev_t dev));
 void	destroy_dev __P((dev_t dev));
+void	revoke_and_destroy_dev __P((dev_t dev));
 struct cdevsw *devsw __P((dev_t dev));
 const char *devtoname __P((dev_t dev));
 int	dev_named __P((dev_t pdev, const char *name));
diff --git a/sys/sys/linedisc.h b/sys/sys/linedisc.h
index f2bba3a..130f5cb 100644
--- a/sys/sys/linedisc.h
+++ b/sys/sys/linedisc.h
@@ -317,6 +317,7 @@ int	cdevsw_add __P((struct cdevsw *new));
 int	cdevsw_remove __P((struct cdevsw *old));
 int	count_dev __P((dev_t dev));
 void	destroy_dev __P((dev_t dev));
+void	revoke_and_destroy_dev __P((dev_t dev));
 struct cdevsw *devsw __P((dev_t dev));
 const char *devtoname __P((dev_t dev));
 int	dev_named __P((dev_t pdev, const char *name));