From dc472f67021320309ced970d3d26d30a04da0ef2 Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Thu, 11 Aug 2022 09:06:09 -0600
Subject: [PATCH] stand: Add devformat to return formatted string for a device

Use dv_fmtdev to return a formatted string for a device. If this is a
null pointer, return the device name and unit followed by a colon (eg
disk3:).

Sponsored by:		Netflix
Reviewed by:		tsoome (prior version)
Differential Revision:	https://reviews.freebsd.org/D35916
---
 stand/libsa/dev.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/stand/libsa/dev.c b/stand/libsa/dev.c
index 1d1dd075580e..2ccdce22d596 100644
--- a/stand/libsa/dev.c
+++ b/stand/libsa/dev.c
@@ -56,3 +56,14 @@ noioctl(struct open_file *f __unused, u_long cmd __unused, void *data __unused)
 {
 	return (EINVAL);
 }
+
+char *
+devformat(struct devdesc *d)
+{
+	static char name[DEV_DEVLEN];
+
+	if (d->d_dev->dv_fmtdev != NULL)
+		return (d->d_dev->dv_fmtdev(d));
+	snprintf(name, sizeof(name), "%s%d:", d->d_dev->dv_name, d->d_unit);
+	return (name);
+}