linux-kernel - [PATCH 0/2] fs, close_range: add flag CLOSE_RANGE

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: <20201013140609.2269319-1-gscrivan@redhat.com>
Date:   Tue, 13 Oct 2020 16:06:07 +0200
From:   Giuseppe Scrivano <gscrivan@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     viro@...iv.linux.org.uk, linux-fsdevel@...r.kernel.org,
        christian.brauner@...ntu.com, containers@...ts.linux-foundation.org
Subject: [PATCH 0/2] fs, close_range: add flag CLOSE_RANGE_CLOEXEC

When the new flag is used, close_range will set the close-on-exec bit
for the file descriptors instead of close()-ing them.

It is useful for e.g. container runtimes that want to minimize the
number of syscalls used after a seccomp profile is installed but want
to keep some fds open until the container process is executed.

Giuseppe Scrivano (2):
  fs, close_range: add flag CLOSE_RANGE_CLOEXEC
  selftests: add tests for CLOSE_RANGE_CLOEXEC

 fs/file.c                                     | 56 +++++++++++++------
 include/uapi/linux/close_range.h              |  3 +
 .../testing/selftests/core/close_range_test.c | 44 +++++++++++++++
 3 files changed, 86 insertions(+), 17 deletions(-)

-- 
2.26.2