Subject: [PATCH v4 0/3] LSM: module hierarchy in /proc/.../attr
Changes from v3:
Use kasprintf instead of kzalloc() ... sprintf.
Create interfaces that make it possible to deal with process
attributes in the face of multiple "major" security modules.
Patch 1/3 adds /sys/kernel/security/lsm, which provides
a list of the active security modules on the system.
$ cat /sys/kernel/security/lsm
capability,yama,loadpin,smack
Patch 2/3 adds a subdirectory in /proc/.../attr for each
security module that exports process attribute data. This
allows a program in easily differentiate between the "current"
value for Smack and AppArmor.
$ cat /proc/self/attr/smack/current
System
$ cat /proc/self/attr/apparmor/current
unconfined
Patch 3/3 adds an interface that provides module identified
information that otherwise matches the "current" attr.
This allows a system with multiple modules to provide the
complete security "context" in one place. A (future) system
with both Smack and AppArmor might report:
$ cat /proc/self/attr/context
smack='System'apparmor='unconfined'
Signed-off-by: Casey Schaufler <ca...@schaufler-ca.com>
---
Documentation/security/LSM.txt | 26 +++++--
fs/proc/base.c | 95 ++++++++++++++++++++---
fs/proc/internal.h | 1 +
include/linux/lsm_hooks.h | 12 +--
include/linux/security.h | 15 ++--
security/apparmor/lsm.c | 37 +++++++--
security/commoncap.c | 3 +-
security/inode.c | 26 ++++++-
security/loadpin/loadpin.c | 2 +-
security/security.c | 169 ++++++++++++++++++++++++++++++++++++++++-
security/selinux/hooks.c | 24 +++++-
security/smack/smack_lsm.c | 23 +++---
security/tomoyo/tomoyo.c | 2 +-
security/yama/yama_lsm.c | 2 +-
14 files changed, 382 insertions(+), 55 deletions(-)
