Android: Set ctrl_iface client socket group (AID_WIFI) separately

Split chown() call in wpa_ctrl_open() and wpa_ctrl_open2() to allow the
group id to be set even if the process does not have privileges to
change the owner. This is needed for modules that need to communicate
with wpa_supplicant since without the group change, wpa_supplicant may
not have privileges to send the response to a control interface command.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

src/common/wpa_ctrl.c

@@ -152,6 +152,8 @@ try_again:
 
 #ifdef ANDROID
 	chmod(ctrl->local.sun_path, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
+	/* Set group even if we do not have privileges to change owner */
+	chown(ctrl->local.sun_path, -1, AID_WIFI);
 	chown(ctrl->local.sun_path, AID_SYSTEM, AID_WIFI);
 
 	if (os_strncmp(ctrl_path, "@android:", 9) == 0) {