Linux-Fsdevel Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Kees Cook <keescook@chromium.org>
To: linux-kernel@vger.kernel.org
Cc: Kees Cook <keescook@chromium.org>,
	Sargun Dhillon <sargun@sargun.me>,
	Christian Brauner <christian@brauner.io>,
	Tycho Andersen <tycho@tycho.ws>,
	David Laight <David.Laight@ACULAB.COM>,
	Christoph Hellwig <hch@lst.de>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Aleksa Sarai <cyphar@cyphar.com>,
	Matt Denton <mpdenton@google.com>, Jann Horn <jannh@google.com>,
	Chris Palmer <palmer@google.com>,
	Robert Sesek <rsesek@google.com>,
	Giuseppe Scrivano <gscrivan@redhat.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Andy Lutomirski <luto@amacapital.net>,
	Will Drewry <wad@chromium.org>, Shuah Khan <shuah@kernel.org>,
	netdev@vger.kernel.org, containers@lists.linux-foundation.org,
	linux-api@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-kselftest@vger.kernel.org
Subject: [PATCH v7 0/9] Add seccomp notifier ioctl that enables adding fds
Date: Thu,  9 Jul 2020 11:26:33 -0700	[thread overview]
Message-ID: <20200709182642.1773477-1-keescook@chromium.org> (raw)

Hello!

v7:
- break out sock usage counting fixes into more cleanly backportable pieces
- code style cleanups (christian)
- clarify addfd commit log (christian)
- add ..._SIZE_{VER0,LATEST} and BUILD_BUG_ON()s (christian)
- remove undef (christian)
- fix addfd embedded URL reference numbers
v6: https://lore.kernel.org/lkml/20200706201720.3482959-1-keescook@chromium.org/

This continues the thread-merge between [1] and [2]. tl;dr: add a way for
a seccomp user_notif process manager to inject files into the managed
process in order to handle emulation of various fd-returning syscalls
across security boundaries. Containers folks and Chrome are in need
of the feature, and investigating this solution uncovered (and fixed)
implementation issues with existing file sending routines.

I intend to carry this in the for-next/seccomp tree, unless someone
has objections. :) Please review and test!

-Kees

[1] https://lore.kernel.org/lkml/20200603011044.7972-1-sargun@sargun.me/
[2] https://lore.kernel.org/lkml/20200610045214.1175600-1-keescook@chromium.org/


Kees Cook (7):
  net/compat: Add missing sock updates for SCM_RIGHTS
  pidfd: Add missing sock updates for pidfd_getfd()
  net/scm: Regularize compat handling of scm_detach_fds()
  fs: Move __scm_install_fd() to __receive_fd()
  fs: Add receive_fd() wrapper for __receive_fd()
  pidfd: Replace open-coded receive_fd()
  fs: Expand __receive_fd() to accept existing fd

Sargun Dhillon (2):
  seccomp: Introduce addfd ioctl to seccomp user notifier
  selftests/seccomp: Test SECCOMP_IOCTL_NOTIF_ADDFD

 fs/file.c                                     |  57 +++++
 include/linux/file.h                          |  19 ++
 include/linux/seccomp.h                       |   4 +
 include/net/sock.h                            |   4 +
 include/uapi/linux/seccomp.h                  |  22 ++
 kernel/pid.c                                  |  14 +-
 kernel/seccomp.c                              | 173 ++++++++++++-
 net/compat.c                                  |  55 ++---
 net/core/scm.c                                |  50 +---
 net/core/sock.c                               |  21 ++
 tools/testing/selftests/seccomp/seccomp_bpf.c | 229 ++++++++++++++++++
 11 files changed, 566 insertions(+), 82 deletions(-)

-- 
2.25.1


             reply	other threads:[~2020-07-09 18:27 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-09 18:26 Kees Cook [this message]
2020-07-09 18:26 ` [PATCH v7 1/9] net/compat: Add missing sock updates for SCM_RIGHTS Kees Cook
2020-07-10 11:28   ` Christian Brauner
2020-07-09 18:26 ` [PATCH v7 2/9] pidfd: Add missing sock updates for pidfd_getfd() Kees Cook
2020-07-09 20:00   ` Jann Horn
2020-07-09 21:17     ` Kees Cook
2020-07-09 22:35     ` Kees Cook
2020-07-09 18:26 ` [PATCH v7 3/9] net/scm: Regularize compat handling of scm_detach_fds() Kees Cook
2020-08-07 20:29   ` John Stultz
2020-08-07 22:18     ` Kees Cook
2020-08-08  0:02       ` John Stultz
2020-08-08  7:17         ` Kees Cook
2020-07-09 18:26 ` [PATCH v7 4/9] fs: Move __scm_install_fd() to __receive_fd() Kees Cook
2020-07-09 18:26 ` [PATCH v7 5/9] fs: Add receive_fd() wrapper for __receive_fd() Kees Cook
2020-07-09 18:26 ` [PATCH v7 6/9] pidfd: Replace open-coded receive_fd() Kees Cook
2020-07-09 18:26 ` [PATCH v7 7/9] fs: Expand __receive_fd() to accept existing fd Kees Cook
2020-07-09 18:26 ` [PATCH v7 8/9] seccomp: Introduce addfd ioctl to seccomp user notifier Kees Cook
2020-07-14 18:20   ` Will Drewry
2020-07-09 18:26 ` [PATCH v7 9/9] selftests/seccomp: Test SECCOMP_IOCTL_NOTIF_ADDFD Kees Cook

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200709182642.1773477-1-keescook@chromium.org \
    --to=keescook@chromium.org \
    --cc=David.Laight@ACULAB.COM \
    --cc=christian@brauner.io \
    --cc=containers@lists.linux-foundation.org \
    --cc=cyphar@cyphar.com \
    --cc=davem@davemloft.net \
    --cc=gregkh@linuxfoundation.org \
    --cc=gscrivan@redhat.com \
    --cc=hch@lst.de \
    --cc=jannh@google.com \
    --cc=kuba@kernel.org \
    --cc=linux-api@vger.kernel.org \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-kselftest@vger.kernel.org \
    --cc=luto@amacapital.net \
    --cc=mpdenton@google.com \
    --cc=netdev@vger.kernel.org \
    --cc=palmer@google.com \
    --cc=rsesek@google.com \
    --cc=sargun@sargun.me \
    --cc=shuah@kernel.org \
    --cc=tycho@tycho.ws \
    --cc=viro@zeniv.linux.org.uk \
    --cc=wad@chromium.org \
    --subject='Re: [PATCH v7 0/9] Add seccomp notifier ioctl that enables adding fds' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).