ioctls that return file descriptors

[Paul Floyd]

Hi

Does anyone know of any FreeBSD ioctls that return file descriptors?

An example from Linux is DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD.

A+
Paul



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[Konstantin Belousov]

Post by Paul Floyd
Hi
Does anyone know of any FreeBSD ioctls that return file descriptors?
An example from Linux is DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD.

I expect that the same ioctl is implemented by the FreeBSD drm kmod.

For in-tree, you could search for falloc_caps() calls. Quick grep
shows it is only used by expected syscalls, not by drivers.


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[Paul Floyd]

Post by Konstantin Belousov

Post by Paul Floyd
Hi
Does anyone know of any FreeBSD ioctls that return file descriptors?
An example from Linux is DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD.

I expect that the same ioctl is implemented by the FreeBSD drm kmod.
For in-tree, you could search for falloc_caps() calls. Quick grep
shows it is only used by expected syscalls, not by drivers.

Thanks for that.

There is DRM_IOCTL_PRIME_HANDLE_TO_FD but not
DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD.

I see also that there's one _umtx_op sub-command that I wasn't handling.

A+
Paul


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