From b5d61c86ab23baf420764cbcc4814aee42d34a9d Mon Sep 17 00:00:00 2001
From: Paul Elder <paul.elder@ideasonboard.com>
Date: Tue, 16 Jun 2020 18:23:43 +0900
Subject: v4l2: v4l2_camera_proxy: Check for null arg values in main ioctl
 handler

The ioctl handlers currently don't check if arg is null, so if it ever
is, it will cause a segfault. Check that arg is null and return -EFAULT
in the main vidioc ioctl handler.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 src/v4l2/v4l2_camera_proxy.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/v4l2/v4l2_camera_proxy.h')

diff --git a/src/v4l2/v4l2_camera_proxy.h b/src/v4l2/v4l2_camera_proxy.h
index 36d1dbc8..86c1a7df 100644
--- a/src/v4l2/v4l2_camera_proxy.h
+++ b/src/v4l2/v4l2_camera_proxy.h
@@ -11,6 +11,7 @@
 #include <linux/videodev2.h>
 #include <map>
 #include <memory>
+#include <set>
 #include <sys/mman.h>
 #include <sys/types.h>
 #include <vector>
@@ -68,6 +69,8 @@ private:
 	static PixelFormat v4l2ToDrm(uint32_t format);
 	static uint32_t drmToV4L2(const PixelFormat &format);
 
+	static const std::set<unsigned long> supportedIoctls_;
+
 	unsigned int refcount_;
 	unsigned int index_;
 
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