Documentation/userspace-api/lsm.rst
.. SPDX-License-Identifier: GPL-2.0 .. Copyright (C) 2022 Casey Schaufler [email protected] .. Copyright (C) 2022 Intel Corporation
:Author: Casey Schaufler :Date: July 2023
Linux security modules (LSM) provide a mechanism to implement additional access controls to the Linux security policies.
The various security modules may support any of these attributes:
LSM_ATTR_CURRENT is the current, active security context of the
process.
The proc filesystem provides this value in /proc/self/attr/current.
This is supported by the SELinux, Smack and AppArmor security modules.
Smack also provides this value in /proc/self/attr/smack/current.
AppArmor also provides this value in /proc/self/attr/apparmor/current.
LSM_ATTR_EXEC is the security context of the process at the time the
current image was executed.
The proc filesystem provides this value in /proc/self/attr/exec.
This is supported by the SELinux and AppArmor security modules.
AppArmor also provides this value in /proc/self/attr/apparmor/exec.
LSM_ATTR_FSCREATE is the security context of the process used when
creating file system objects.
The proc filesystem provides this value in /proc/self/attr/fscreate.
This is supported by the SELinux security module.
LSM_ATTR_KEYCREATE is the security context of the process used when
creating key objects.
The proc filesystem provides this value in /proc/self/attr/keycreate.
This is supported by the SELinux security module.
LSM_ATTR_PREV is the security context of the process at the time the
current security context was set.
The proc filesystem provides this value in /proc/self/attr/prev.
This is supported by the SELinux and AppArmor security modules.
AppArmor also provides this value in /proc/self/attr/apparmor/prev.
LSM_ATTR_SOCKCREATE is the security context of the process used when
creating socket objects.
The proc filesystem provides this value in /proc/self/attr/sockcreate.
This is supported by the SELinux security module.
.. kernel-doc:: security/lsm_syscalls.c :identifiers: sys_lsm_set_self_attr
.. kernel-doc:: security/lsm_syscalls.c :identifiers: sys_lsm_get_self_attr
.. kernel-doc:: security/lsm_syscalls.c :identifiers: sys_lsm_list_modules