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authorCasey Schaufler <casey@schaufler-ca.com>2017-01-19 04:09:05 +0300
committerJames Morris <james.l.morris@oracle.com>2017-01-19 05:18:29 +0300
commitd69dece5f5b6bc7a5e39d2b6136ddc69469331fe (patch)
treeb4c23177baf246a1f64b83442fc3359cbc0d8f38 /Documentation/security
parent3ccb76c5dfe0d25c1d0168d5b726d0b43d19a485 (diff)
downloadlinux-d69dece5f5b6bc7a5e39d2b6136ddc69469331fe.tar.xz
LSM: Add /sys/kernel/security/lsm
I am still tired of having to find indirect ways to determine what security modules are active on a system. I have added /sys/kernel/security/lsm, which contains a comma separated list of the active security modules. No more groping around in /proc/filesystems or other clever hacks. Unchanged from previous versions except for being updated to the latest security next branch. Signed-off-by: Casey Schaufler <casey@schaufler-ca.com> Acked-by: John Johansen <john.johansen@canonical.com> Acked-by: Paul Moore <paul@paul-moore.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: James Morris <james.l.morris@oracle.com>
Diffstat (limited to 'Documentation/security')
-rw-r--r--Documentation/security/LSM.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/security/LSM.txt b/Documentation/security/LSM.txt
index 3db7e671c440..c2683f28ed36 100644
--- a/Documentation/security/LSM.txt
+++ b/Documentation/security/LSM.txt
@@ -22,6 +22,13 @@ system, building their checks on top of the defined capability hooks.
For more details on capabilities, see capabilities(7) in the Linux
man-pages project.
+A list of the active security modules can be found by reading
+/sys/kernel/security/lsm. This is a comma separated list, and
+will always include the capability module. The list reflects the
+order in which checks are made. The capability module will always
+be first, followed by any "minor" modules (e.g. Yama) and then
+the one "major" module (e.g. SELinux) if there is one configured.
+
Based on https://lkml.org/lkml/2007/10/26/215,
a new LSM is accepted into the kernel when its intent (a description of
what it tries to protect against and in what cases one would expect to