diff options
| author | Paul Elder <paul.elder@ideasonboard.com> | 2020-06-18 18:46:02 +0900 |
|---|---|---|
| committer | Paul Elder <paul.elder@ideasonboard.com> | 2020-06-25 23:47:13 +0900 |
| commit | 3f01ccf24b5866b23ca37bcee9e92a648363e4e1 (patch) | |
| tree | be97bfc9280bbfb47c9a592332b89463bd35d5bf /src | |
| parent | 4d150c7faf8291fcd533ab721a0169c3249c26c2 (diff) | |
v4l2: v4l2_camera_proxy: Don't allow buffers to be freed if still mmaped
In VIDIOC_REQBUFS with count = 0, if the buffers are still mmaped, they
should not be allowed to be freed. Add a check for this.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/v4l2/v4l2_camera_proxy.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/v4l2/v4l2_camera_proxy.cpp b/src/v4l2/v4l2_camera_proxy.cpp index e54df4e6..d0a12bc3 100644 --- a/src/v4l2/v4l2_camera_proxy.cpp +++ b/src/v4l2/v4l2_camera_proxy.cpp @@ -470,6 +470,10 @@ int V4L2CameraProxy::vidioc_reqbufs(V4L2CameraFile *file, struct v4l2_requestbuf memset(arg->reserved, 0, sizeof(arg->reserved)); if (arg->count == 0) { + /* \todo Add buffer orphaning support */ + if (!mmaps_.empty()) + return -EBUSY; + if (vcam_->isRunning()) return -EBUSY; |