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From: Florian Weimer <fw@deneb.enyo.de>
To: David Herrmann <dh.herrmann@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Arnd Bergmann <arnd@arndb.de>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>,
	Tom Gundersen <teg@jklm.no>, Jiri Kosina <jkosina@suse.cz>,
	Andy Lutomirski <luto@amacapital.net>,
	Linux API <linux-api@vger.kernel.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Daniel Mack <daniel@zonque.org>,
	Djalal Harouni <tixxdz@opendz.org>
Subject: Re: kdbus: add documentation
Date: Sun, 30 Nov 2014 18:23:53 +0100	[thread overview]
Message-ID: <87vblwtxee.fsf@mid.deneb.enyo.de> (raw)
In-Reply-To: <CANq1E4RjwCVEVT7031CeiKrNvRFkLBZc4-X1uKdrdzpf=EwJ+A@mail.gmail.com> (David Herrmann's message of "Sun, 30 Nov 2014 18:15:14 +0100")

* David Herrmann:

> On Sun, Nov 30, 2014 at 10:02 AM, Florian Weimer <fw@deneb.enyo.de> wrote:
>> * Greg Kroah-Hartman:
>>
>>> +7.4 Receiving messages

>> What happens if this is not possible because the file descriptor limit
>> of the processes would be exceeded?  EMFILE, and the message will not
>> be received?
>
> The message is returned without installing the FDs. This is signaled
> by EMFILE, but a valid pool offset.

Oh.  This is really surprising, so it needs documentation.  But it's
probably better than the alternative (return EMFILE and leave the
message stuck, so that you receive it immediately again—this behavior
makes non-blocking accept rather difficult to use correctly).

  reply	other threads:[~2014-11-30 17:24 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-21  5:02 [PATCH v2 00/13] Add kdbus implementation Greg Kroah-Hartman
2014-11-21  5:02 ` kdbus: add documentation Greg Kroah-Hartman
2014-11-21  8:29   ` Harald Hoyer
2014-11-21 17:12   ` Andy Lutomirski
2014-11-24 20:16     ` David Herrmann
2014-11-24 20:57       ` Andy Lutomirski
2014-11-26 11:55         ` David Herrmann
2014-11-26 15:30           ` Andy Lutomirski
2014-11-26 15:39             ` Andy Lutomirski
2014-11-30  9:08     ` Florian Weimer
2014-11-30 17:12       ` David Herrmann
2014-11-30 17:22         ` Florian Weimer
2014-11-30  8:56   ` Florian Weimer
2014-11-30 17:17     ` David Herrmann
2014-11-30  9:02   ` Florian Weimer
2014-11-30 17:15     ` David Herrmann
2014-11-30 17:23       ` Florian Weimer [this message]
2015-01-20  8:09         ` Michael Kerrisk (man-pages)
2015-01-20  8:25           ` Daniel Mack
2015-01-20 12:54             ` Michael Kerrisk (man-pages)
2014-11-21  5:02 ` kdbus: add header file Greg Kroah-Hartman
2014-11-21  8:34   ` Harald Hoyer
2014-11-21  8:55     ` Daniel Mack
2014-11-21  5:02 ` kdbus: add driver skeleton, ioctl entry points and utility functions Greg Kroah-Hartman
2014-11-21  5:02 ` kdbus: add connection pool implementation Greg Kroah-Hartman
2014-11-21  5:02 ` kdbus: add connection, queue handling and message validation code Greg Kroah-Hartman
2014-11-21  5:02 ` kdbus: add node and filesystem implementation Greg Kroah-Hartman
2014-11-21 15:55   ` Sasha Levin
2014-11-21 16:13     ` David Herrmann
2014-11-21 16:56       ` Greg Kroah-Hartman
2014-11-21 17:03         ` Sasha Levin
2014-11-21 17:55           ` Greg Kroah-Hartman
2014-11-21 16:35   ` Andy Lutomirski
2014-11-21 16:41     ` Andy Lutomirski
2014-11-21 16:53     ` David Herrmann
2014-11-21  5:02 ` kdbus: add code to gather metadata Greg Kroah-Hartman
2014-11-21 19:50   ` Andy Lutomirski
2014-12-01 13:50     ` Daniel Mack
2014-12-01 14:46       ` Andy Lutomirski
2014-11-21  5:02 ` kdbus: add code for notifications and matches Greg Kroah-Hartman
2014-11-21  5:02 ` kdbus: add code for buses, domains and endpoints Greg Kroah-Hartman
2014-11-21  8:14   ` Harald Hoyer
2014-11-21  8:39   ` Harald Hoyer
2014-11-21  5:02 ` kdbus: add name registry implementation Greg Kroah-Hartman
2014-11-21  5:02 ` kdbus: add policy database implementation Greg Kroah-Hartman
2014-11-21  5:02 ` kdbus: add Makefile, Kconfig and MAINTAINERS entry Greg Kroah-Hartman
2014-11-21  5:02 ` kdbus: add selftests Greg Kroah-Hartman
2014-11-21  6:02 ` [PATCH v2 00/13] Add kdbus implementation Greg Kroah-Hartman
  -- strict thread matches above, loose matches on Subject: below --
2014-10-29 22:00 [PATCH 00/12] " Greg Kroah-Hartman
2014-10-29 22:00 ` kdbus: add documentation Greg Kroah-Hartman
2014-10-30 12:20   ` Peter Meerwald
2014-11-02  1:29     ` Greg Kroah-Hartman

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