D49334.1784378431.diff
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D49334.1784378431.diff
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	diff --git a/sys/kern/kern_conf.c b/sys/kern/kern_conf.c
	--- a/sys/kern/kern_conf.c
	+++ b/sys/kern/kern_conf.c
	@@ -1245,6 +1245,19 @@
	return (dev->si_name);
	}

	+void
	+dev_copyname(struct cdev dev, char path, size_t len)
	+{
	+ struct cdevsw *csw;
	+ int ref;
	+
	+ csw = dev_refthread(dev, &ref);
	+ if (csw != NULL) {
	+ strlcpy(path, dev->si_name, len);
	+ dev_relthread(dev, ref);
	+ }
	+}
	+
	int
	dev_stdclone(char name, char namep, const char stem, int *unit)
	{
	diff --git a/sys/sys/conf.h b/sys/sys/conf.h
	--- a/sys/sys/conf.h
	+++ b/sys/sys/conf.h
	@@ -277,6 +277,7 @@
	int destroy_dev_sched(struct cdev *dev);
	int destroy_dev_sched_cb(struct cdev dev, void (cb)(void ), void arg);
	void destroy_dev_drain(struct cdevsw *csw);
	+void dev_copyname(struct cdev dev, char path, size_t len);
	struct cdevsw dev_refthread(struct cdev _dev, int *_ref);
	struct cdevsw devvn_refthread(struct vnode vp, struct cdev *devp, int _ref);
	void dev_relthread(struct cdev *_dev, int _ref);