[PATCH] propagate scan failures over d-bus

[quiche at chromium.org]

If we receive a scan request via D-Bus, and wpa_supplicant_scan_trigger
fails, return the failure to the caller over D-Bus.

Signed-hostap: mukesh agrawal <quiche at chromium.org>
---
 wpa_supplicant/dbus/dbus_new_handlers.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/wpa_supplicant/dbus/dbus_new_handlers.c b/wpa_supplicant/dbus/dbus_new_handlers.c
index 4d5e109..d4f9a77 100644
--- a/wpa_supplicant/dbus/dbus_new_handlers.c
+++ b/wpa_supplicant/dbus/dbus_new_handlers.c
@@ -1221,7 +1221,10 @@ DBusMessage * wpas_dbus_handler_scan(DBusMessage *message,
 				"passive scan");
 			goto out;
 		} else if (params.freqs && params.freqs[0]) {
-			wpa_supplicant_trigger_scan(wpa_s, &params);
+			if (wpa_supplicant_trigger_scan(wpa_s, &params)) {
+				reply = wpas_dbus_error_unknown_error(
+				message, "Scan request rejected");
+			}
 		} else {
 			wpa_s->scan_req = 2;
 			wpa_supplicant_req_scan(wpa_s, 0, 0);
@@ -1231,7 +1234,10 @@ DBusMessage * wpas_dbus_handler_scan(DBusMessage *message,
 			/* Add wildcard ssid */
 			params.num_ssids++;
 		}
-		wpa_supplicant_trigger_scan(wpa_s, &params);
+		if (wpa_supplicant_trigger_scan(wpa_s, &params)) {
+			reply = wpas_dbus_error_unknown_error(
+				message, "Scan request rejected");
+		}
 	} else {
 		wpa_printf(MSG_DEBUG, "wpas_dbus_handler_scan[dbus]: "
 			   "Unknown scan type: %s", type);
-- 
1.9.1.423.g4596e3a