https://bugs.kde.org/show_bug.cgi?id=492422

--- Comment #29 from Mark Wielaard <m...@klomp.org> ---
There are more than 100 DRM_IOCTLs, or more than 400 when including all the
driver specific variants.

There are only a handful of (generic) DRM_IOCTLs dealing with file descriptors:
DRM_IOCTL_MODE_CREATE_LEASE *
DRM_IOCTL_PRIME_HANDLE_TO_FD *
DRM_IOCTL_PRIME_FD_TO_HANDLE
DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD *
DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE
DRM_IOCTL_SYNCOBJ_EVENTFD

* Only these 3 create a new fd

Then there are DMA_BUF_IOCTL_EXPORT_SYNC_FILE and
DMA_BUF_IOCTL_IMPORT_SYNC_FILE

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