From 30da4f77aae99bf9ae5905d0ef89668391eea315 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Sat, 13 May 2017 04:51:48 -0700 Subject: [PATCH] doc: ReSTify LoadPin.txt Adjusts for ReST markup and moves under LSM admin guide. Signed-off-by: Kees Cook Signed-off-by: Jonathan Corbet --- .../LoadPin.txt => admin-guide/LSM/LoadPin.rst} | 12 ++++++++---- Documentation/admin-guide/LSM/index.rst | 1 + MAINTAINERS | 1 + 3 files changed, 10 insertions(+), 4 deletions(-) rename Documentation/{security/LoadPin.txt => admin-guide/LSM/LoadPin.rst} (73%) diff --git a/Documentation/security/LoadPin.txt b/Documentation/admin-guide/LSM/LoadPin.rst similarity index 73% rename from Documentation/security/LoadPin.txt rename to Documentation/admin-guide/LSM/LoadPin.rst index e11877f5d3d4..32070762d24c 100644 --- a/Documentation/security/LoadPin.txt +++ b/Documentation/admin-guide/LSM/LoadPin.rst @@ -1,3 +1,7 @@ +======= +LoadPin +======= + LoadPin is a Linux Security Module that ensures all kernel-loaded files (modules, firmware, etc) all originate from the same filesystem, with the expectation that such a filesystem is backed by a read-only device @@ -5,13 +9,13 @@ such as dm-verity or CDROM. This allows systems that have a verified and/or unchangeable filesystem to enforce module and firmware loading restrictions without needing to sign the files individually. -The LSM is selectable at build-time with CONFIG_SECURITY_LOADPIN, and +The LSM is selectable at build-time with ``CONFIG_SECURITY_LOADPIN``, and can be controlled at boot-time with the kernel command line option -"loadpin.enabled". By default, it is enabled, but can be disabled at -boot ("loadpin.enabled=0"). +"``loadpin.enabled``". By default, it is enabled, but can be disabled at +boot ("``loadpin.enabled=0``"). LoadPin starts pinning when it sees the first file loaded. If the block device backing the filesystem is not read-only, a sysctl is -created to toggle pinning: /proc/sys/kernel/loadpin/enabled. (Having +created to toggle pinning: ``/proc/sys/kernel/loadpin/enabled``. (Having a mutable filesystem means pinning is mutable too, but having the sysctl allows for easy testing on systems with a mutable filesystem.) diff --git a/Documentation/admin-guide/LSM/index.rst b/Documentation/admin-guide/LSM/index.rst index e5ba2c69b8ef..41f5262359f9 100644 --- a/Documentation/admin-guide/LSM/index.rst +++ b/Documentation/admin-guide/LSM/index.rst @@ -34,6 +34,7 @@ the one "major" module (e.g. SELinux) if there is one configured. :maxdepth: 1 apparmor + LoadPin SELinux tomoyo Yama diff --git a/MAINTAINERS b/MAINTAINERS index 816947653ea2..38a3d95d2d63 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -11567,6 +11567,7 @@ M: Kees Cook T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git lsm/loadpin S: Supported F: security/loadpin/ +F: Documentation/admin-guide/LSM/LoadPin.rst YAMA SECURITY MODULE M: Kees Cook -- 2.45.2