From: Johannes Berg <johannes@sipsolutions.net>
Date: Thu, 12 Mar 2009 10:13:36 +0000 (+0100)
Subject: better error reporting if dev/phy does not exist
X-Git-Tag: v0.9.11~3
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=989e97c2b55e4238d6f61edff28858e13032ef35;p=thirdparty%2Fiw.git

better error reporting if dev/phy does not exist
---

diff --git a/iw.c b/iw.c
index f1d912b..9194bbd 100644
--- a/iw.c
+++ b/iw.c
@@ -149,6 +149,8 @@ static int phy_lookup(char *name)
 	snprintf(buf, sizeof(buf), "/sys/class/ieee80211/%s/index", name);
 
 	fd = open(buf, O_RDONLY);
+	if (fd < 0)
+		return -1;
 	pos = read(fd, buf, sizeof(buf) - 1);
 	if (pos < 0)
 		return -1;
@@ -200,6 +202,8 @@ static int handle_cmd(struct nl80211_state *state,
 		break;
 	case CIB_NETDEV:
 		devidx = if_nametoindex(*argv);
+		if (devidx == 0)
+			devidx = -1;
 		argc--;
 		argv++;
 		break;
@@ -207,6 +211,9 @@ static int handle_cmd(struct nl80211_state *state,
 		break;
 	}
 
+	if (devidx < 0)
+		return -errno;
+
 	section = command = *argv;
 	argc--;
 	argv++;