From b98d2b35dff9bff4380986818b0c6d93a751752c Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Wed, 30 May 2018 15:08:59 +0000
Subject: [PATCH] devinfo_init() returns an errno, but doesn't set errno, so
 the error message when it fails reflects some random thing rather than what
 it returned. Set errno to the return value.

---
 usr.sbin/devinfo/devinfo.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/usr.sbin/devinfo/devinfo.c b/usr.sbin/devinfo/devinfo.c
index c4ec2eeccfd0..be18c57dc5e7 100644
--- a/usr.sbin/devinfo/devinfo.c
+++ b/usr.sbin/devinfo/devinfo.c
@@ -36,6 +36,7 @@ __FBSDID("$FreeBSD$");
 
 #include <sys/types.h>
 #include <err.h>
+#include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -242,7 +243,7 @@ int
 main(int argc, char *argv[]) 
 {
 	struct devinfo_dev	*root;
-	int			c, uflag;
+	int			c, uflag, rv;
 	char			*path = NULL;
 
 	uflag = 0;
@@ -268,8 +269,10 @@ main(int argc, char *argv[])
 	if (path && (rflag || uflag))
 		usage();
 
-	if (devinfo_init())
+	if ((rv = devinfo_init()) != 0) {
+		errno = rv;
 		err(1, "devinfo_init");
+	}
 
 	if ((root = devinfo_handle_to_device(DEVINFO_ROOT_DEVICE)) == NULL)
 		errx(1, "can't find root device");