From: David Howells <dhowells@redhat.com>
To: Eugeniu Rosca <erosca@de.adit-jv.com>
Cc: dhowells@redhat.com
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
Alan Stern <stern@rowland.harvard.edu>,
Mathias Nyman <mathias.nyman@linux.intel.com>,
Kai-Heng Feng <kai.heng.feng@canonical.com>,
Felipe Balbi <felipe.balbi@linux.intel.com>,
Nicolas Boichat <drinkcat@chromium.org>,
Mathias Payer <mathias.payer@nebelwelt.net>,
Kento Kobayashi <Kento.A.Kobayashi@sony.com>,
Hui Peng <benquike@gmail.com>,
Raul E Rangel <rrangel@chromium.org>,
Douglas Anderson <dianders@chromium.org>,
Jan-Marek Glogowski <glogow@fbihome.de>, Bin Liu <b-liu@ti.com>,
Colin Ian King <colin.king@canonical.com>,
Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
Jon Flatley <jflat@chromium.org>,
Mathieu Malaterre <malat@debian.org>,
Spyridon Papageorgiou <spapageorgiou@de.adit-jv.com>,
Joshua Frkuska <joshua_frkuska@mentor.com>,
"George G . Davis" <george_davis@mentor.com>,
yuichi.kusakabe@denso-ten.com, yohhei.fukui@denso-ten.com,
natsumi.kamei@denso-ten.com, yasano@jp.adit-jv.com,
sliu@de.adit-jv.com, Eugeniu Rosca <roscaeugeniu@gmail.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: [PATCH] usb: hub: report failure to enumerate uevent to userspace
Date: Wed, 05 Jun 2019 22:19:43 +0100 [thread overview]
Message-ID: <6439.1559769583@warthog.procyon.org.uk> (raw)
In-Reply-To: <20190605165530.GA15790@vmlxhi-102.adit-jv.com>
Eugeniu Rosca <erosca@de.adit-jv.com> 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
next prev parent reply other threads:[~2019-06-05 21:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-05 9:05 [PATCH] usb: hub: report failure to enumerate uevent to userspace Eugeniu Rosca
2019-06-05 10:03 ` Greg Kroah-Hartman
2019-06-05 16:55 ` Eugeniu Rosca
2019-06-05 17:48 ` Greg Kroah-Hartman
2019-06-05 21:19 ` David Howells [this message]
2019-06-05 21:22 ` David Howells
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