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Message-ID: <87ttp3rprd.fsf@oldenburg.str.redhat.com>
Date: Thu, 30 Nov 2023 20:43:18 +0100
From: Florian Weimer <fweimer@...hat.com>
To: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc: Tycho Andersen <tycho@...ho.pizza>,
Christian Brauner <brauner@...nel.org>,
Oleg Nesterov <oleg@...hat.com>,
"Eric W . Biederman" <ebiederm@...ssion.com>,
linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
Tycho Andersen <tandersen@...flix.com>
Subject: Re: [RFC 1/3] pidfd: allow pidfd_open() on non-thread-group leaders
* Mathieu Desnoyers:
>>> I'd like to offer a userspace API which allows safe stashing of
>>> unreachable file descriptors on a service thread.
>> By "safe" here do you mean not accessible via pidfd_getfd()?
No, unreachable by close/close_range/dup2/dup3. I expect we can do an
intra-process transfer using /proc, but I'm hoping for something nicer.
Thanks,
Florian
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