From: Jouni Malinen <j@w1.fi>
Date: Thu, 2 Jan 2020 14:50:50 +0000 (+0200)
Subject: mac80211_linux: Fix libnl error string fetching
X-Git-Tag: hostap_2_10~2015
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=139f7ab31190308a7f9d5299e2b94bc270619c94;p=thirdparty%2Fhostap.git

mac80211_linux: Fix libnl error string fetching

libnl functions return a library specific error value. errno is not
necessarily valid in all error cases and strerror() for the returned
value is not valid either.

Use nl_geterror() to get the correct error string from the returned
error code.

Signed-off-by: Jouni Malinen <j@w1.fi>
---

diff --git a/src/drivers/driver_macsec_linux.c b/src/drivers/driver_macsec_linux.c
index 9c2aa3c70..5319ba2d0 100644
--- a/src/drivers/driver_macsec_linux.c
+++ b/src/drivers/driver_macsec_linux.c
@@ -319,14 +319,14 @@ static int macsec_drv_macsec_init(void *priv, struct macsec_init_params *params)
 	if (err < 0) {
 		wpa_printf(MSG_ERROR, DRV_PREFIX
 			   "Unable to connect NETLINK_ROUTE socket: %s",
-			   strerror(errno));
+			   nl_geterror(err));
 		goto sock;
 	}
 
 	err = rtnl_link_alloc_cache(drv->sk, AF_UNSPEC, &drv->link_cache);
 	if (err < 0) {
 		wpa_printf(MSG_ERROR, DRV_PREFIX "Unable to get link cache: %s",
-			   strerror(errno));
+			   nl_geterror(err));
 		goto sock;
 	}