netdev - [RFC/PATCH] Generalize poll events from eventfd

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1439185906-28180-1-git-send-email-dhobsong@igel.co.jp>
Date:	Mon, 10 Aug 2015 14:51:45 +0900
From:	Damian Hobson-Garcia <dhobsong@...l.co.jp>
To:	sustrik@...bpm.com, viro@...iv.linux.org.uk
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, linux-api@...r.kernel.org,
	Damian Hobson-Garcia <dhobsong@...l.co.jp>
Subject: [RFC/PATCH] Generalize poll events from eventfd

Hello all,

eventfd is very useful for generating POLLIN/POLLOUT poll events from user
space but some applications may want to generate POLLPRI/POLLERR events as well.
This patch submission aims to generalize the events generated by an
eventfd. This is a resubmission of a patch from Feb 2013[1]. The original
discussion trailed off without any conclusion, but the original author
has recently confirmed[2] that this functionality is still useful, so I
volunteered to rebase and resubmit the patch for discussion.

I have rebased this patch onto v4.2-rc5 and modified the original patch to
not add an indentation level to the implementations of eventfd_{read,write,
poll}.  I hope these changes will make it easier to review. The description of
the efd_mask structure was also updated.

I have a few comments and questions, but I will add those separately as a
reply for open discussion.

[1] https://lkml.org/lkml/2013/2/18/147
[2] https://lkml.org/lkml/2015/7/9/153

Thank you,
Damian

Martin Sustrik (1):
  eventfd: implementation of EFD_MASK flag

 fs/eventfd.c                 | 91 ++++++++++++++++++++++++++++++++++++++------
 include/linux/eventfd.h      | 16 +-------
 include/uapi/linux/eventfd.h | 40 +++++++++++++++++++
 3 files changed, 121 insertions(+), 26 deletions(-)
 create mode 100644 include/uapi/linux/eventfd.h

-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html