path: root/include/linux/security.h
diff options
authorMatthew Garrett <matthewgarrett@google.com>2019-08-19 17:17:37 -0700
committerJames Morris <jmorris@namei.org>2019-08-19 21:54:15 -0700
commite6b1db98cf4d54d9ea59cfcc195f70dc946fdd38 (patch)
tree29e5abb33f499f99ec7a258a3846de344f199653 /include/linux/security.h
parentLinux 5.2 (diff)
security: Support early LSMs
The lockdown module is intended to allow for kernels to be locked down early in boot - sufficiently early that we don't have the ability to kmalloc() yet. Add support for early initialisation of some LSMs, and then add them to the list of names when we do full initialisation later. Early LSMs are initialised in link order and cannot be overridden via boot parameters, and cannot make use of kmalloc() (since the allocator isn't initialised yet). (Fixed by Stephen Rothwell to include a stub to fix builds when !CONFIG_SECURITY) Signed-off-by: Matthew Garrett <mjg59@google.com> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Casey Schaufler <casey@schaufler-ca.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'include/linux/security.h')
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/security.h b/include/linux/security.h
index 659071c2e57c..c5dd90981c98 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -195,6 +195,7 @@ int unregister_lsm_notifier(struct notifier_block *nb);
/* prototypes */
extern int security_init(void);
+extern int early_security_init(void);
/* Security operations */
int security_binder_set_context_mgr(struct task_struct *mgr);
@@ -423,6 +424,11 @@ static inline int security_init(void)
return 0;
+static inline int early_security_init(void)
+ return 0;
static inline int security_binder_set_context_mgr(struct task_struct *mgr)
return 0;