Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

Pull security subsystem updates from James Morris:
 "New notable features:
   - The seccomp work from Will Drewry
   - PR_{GET,SET}_NO_NEW_PRIVS from Andy Lutomirski
   - Longer security labels for Smack from Casey Schaufler
   - Additional ptrace restriction modes for Yama by Kees Cook"

Fix up trivial context conflicts in arch/x86/Kconfig and include/linux/filter.h

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (65 commits)
  apparmor: fix long path failure due to disconnected path
  apparmor: fix profile lookup for unconfined
  ima: fix filename hint to reflect script interpreter name
  KEYS: Don't check for NULL key pointer in key_validate()
  Smack: allow for significantly longer Smack labels v4
  gfp flags for security_inode_alloc()?
  Smack: recursive tramsmute
  Yama: replace capable() with ns_capable()
  TOMOYO: Accept manager programs which do not start with / .
  KEYS: Add invalidation support
  KEYS: Do LRU discard in full keyrings
  KEYS: Permit in-place link replacement in keyring list
  KEYS: Perform RCU synchronisation on keys prior to key destruction
  KEYS: Announce key type (un)registration
  KEYS: Reorganise keys Makefile
  KEYS: Move the key config into security/keys/Kconfig
  KEYS: Use the compat keyctl() syscall wrapper on Sparc64 for Sparc32 compat
  Yama: remove an unused variable
  samples/seccomp: fix dependencies on arch macros
  Yama: add additional ptrace scopes
  ...

1 files changed, 25 insertions, 0 deletions

diff --git a/security/keys/key.c b/security/keys/key.c
index 06783cffb3a..c9bf66ac36e 100644
--- a/security/keys/key.c
+++ b/security/keys/key.c
@@ -955,6 +955,28 @@ void key_revoke(struct key *key)
 EXPORT_SYMBOL(key_revoke);
 
 /**
+ * key_invalidate - Invalidate a key.
+ * @key: The key to be invalidated.
+ *
+ * Mark a key as being invalidated and have it cleaned up immediately.  The key
+ * is ignored by all searches and other operations from this point.
+ */
+void key_invalidate(struct key *key)
+{
+	kenter("%d", key_serial(key));
+
+	key_check(key);
+
+	if (!test_bit(KEY_FLAG_INVALIDATED, &key->flags)) {
+		down_write_nested(&key->sem, 1);
+		if (!test_and_set_bit(KEY_FLAG_INVALIDATED, &key->flags))
+			key_schedule_gc_links();
+		up_write(&key->sem);
+	}
+}
+EXPORT_SYMBOL(key_invalidate);
+
+/**
  * register_key_type - Register a type of key.
  * @ktype: The new key type.
  *
@@ -980,6 +1002,8 @@ int register_key_type(struct key_type *ktype)
 
 	/* store the type */
 	list_add(&ktype->link, &key_types_list);
+
+	pr_notice("Key type %s registered\n", ktype->name);
 	ret = 0;
 
 out:
@@ -1002,6 +1026,7 @@ void unregister_key_type(struct key_type *ktype)
 	list_del_init(&ktype->link);
 	downgrade_write(&key_types_sem);
 	key_gc_keytype(ktype);
+	pr_notice("Key type %s unregistered\n", ktype->name);
 	up_read(&key_types_sem);
 }
 EXPORT_SYMBOL(unregister_key_type);