add missing ioctl declaration

Previously ioctl was declared as a macro in lwip/sockets.h.
Disabling LWIP_POSIX_SOCKETS_IO_NAMES removed that declaration.

This adds sys/ioctl.h file and the missing declaration.
Also adds missing includes in vfs.c.

components/lwip/include/lwip/port/lwipopts.h

@@ -37,6 +37,7 @@
 #include <unistd.h>
 #include <sys/time.h>
 #include <sys/fcntl.h>
+#include <sys/ioctl.h>
 #include "esp_task.h"
 #include "esp_system.h"
 #include "sdkconfig.h"

components/vfs/include/sys/ioctl.h

@@ -0,0 +1,18 @@
+// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+int ioctl(int fd, int request, ...);
+

components/vfs/vfs.c

@@ -16,6 +16,10 @@
 #include <string.h>
 #include <assert.h>
 #include <sys/errno.h>
+#include <sys/fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/unistd.h>
+#include <dirent.h>
 #include "esp_vfs.h"
 #include "esp_log.h"