diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/LSM/LoadPin.rst (renamed from Documentation/security/LoadPin.txt) | 12 | ||||
| -rw-r--r-- | Documentation/admin-guide/LSM/index.rst | 1 |
2 files changed, 9 insertions, 4 deletions
diff --git a/Documentation/security/LoadPin.txt b/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 |