Re: [PATCH] usb: hub: report failure to enumerate uevent to userspace

[David Howells]

Eugeniu Rosca <erosca@xxxxxxxxxxxxxx> wrote:

>  - Looking at commit [4], it seems that the new "notifier" interface/api
>    forces userspace applications to link against -lkeyutils [5].

No.  The keyctl(2) syscall is implemented in -lkeyutils library, and not in
-lc.  That's all.  If you want to call KEYCTL_NOTIFY to watch a key or
keyring, you need it; not otherwise.

>    Assuming the latter is designed for ("Kernel key management") [6],
>    it may look like the keyutils library is being abused to handle
>    the "USB (or really any hardware events)". Do you really plan to
>    extend the scope of the library to handle these new tasks?

No.

That said, it's probably worth providing some userspace library to wrap the
ring management.

David