From ee087540b38c80eb1e7cc5cbf381781c66542abb Mon Sep 17 00:00:00 2001
From: deraadt <deraadt@openbsd.org>
Date: Sat, 10 Feb 2024 15:28:16 +0000
Subject: [PATCH] On kernels without ucom(4) support, 'sysctl hw.ucomnames'
 should return the empty string, rather than error. ok krw

---
 sys/kern/kern_sysctl.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/sys/kern/kern_sysctl.c b/sys/kern/kern_sysctl.c
index 862efafbf14..91bd12930e3 100644
--- a/sys/kern/kern_sysctl.c
+++ b/sys/kern/kern_sysctl.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: kern_sysctl.c,v 1.424 2024/01/19 01:43:27 bluhm Exp $	*/
+/*	$OpenBSD: kern_sysctl.c,v 1.425 2024/02/10 15:28:16 deraadt Exp $	*/
 /*	$NetBSD: kern_sysctl.c,v 1.17 1996/05/20 17:49:05 mrg Exp $	*/
 
 /*-
@@ -771,14 +771,13 @@ hw_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
 	case HW_ALLOWPOWERDOWN:
 		return (sysctl_securelevel_int(oldp, oldlenp, newp, newlen,
 		    &allowpowerdown));
-#if NUCOM > 0
 	case HW_UCOMNAMES: {
-		const char *str = sysctl_ucominit();
-		if (str == NULL)
-			return EINVAL;
+		const char *str = "";
+#if NUCOM > 0
+		str = sysctl_ucominit();
+#endif	/* NUCOM > 0 */
 		return (sysctl_rdstring(oldp, oldlenp, newp, str));
 	}
-#endif	/* NUCOM > 0 */
 #ifdef __HAVE_CPU_TOPOLOGY
 	case HW_SMT:
 		return (sysctl_hwsmt(oldp, oldlenp, newp, newlen));
-- 
2.20.1