From f76f21b24536c7d1bb2622fffc3b8c1eda59fb51 Mon Sep 17 00:00:00 2001
From: Vadim Yanitskiy <vyanitskiy@sysmocom.de>
Date: Thu, 27 Aug 2020 01:10:51 +0700
Subject: [PATCH] macaddr: fix osmo_macaddr_parse(): return meaningful error
 codes

Change-Id: I316deb83979198acc26721d29708d9942174b192
---
 src/macaddr.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/macaddr.c b/src/macaddr.c
index a9138f840..56fdf86eb 100644
--- a/src/macaddr.c
+++ b/src/macaddr.c
@@ -34,6 +34,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <errno.h>
 
 /*! Parse a MAC address from human-readable notation
  *  This function parses an ethernet MAC address in the commonly-used
@@ -77,11 +78,11 @@ int osmo_macaddr_parse(uint8_t *out, const char *in)
  */
 int osmo_get_macaddr(uint8_t *mac_out, const char *dev_name)
 {
-	int rc = -1;
 	struct ifaddrs *ifa, *ifaddr;
+	int rc = -ENODEV;
 
 	if (getifaddrs(&ifaddr) != 0)
-		return -1;
+		return -errno;
 
 	for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
 		struct sockaddr_dl *sdl;