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, 20 insertions, 0 deletions

diff --git a/security/selinux/ss/context.h b/security/selinux/ss/context.h
index 45e8fb0515f8..212e3479a0d9 100644
--- a/security/selinux/ss/context.h
+++ b/security/selinux/ss/context.h
@@ -74,6 +74,26 @@ out:
         return rc;
 }
 
+/*
+ * Sets both levels in the MLS range of 'dst' to the high level of 'src'.
+ */
+static inline int mls_context_cpy_high(struct context *dst, struct context *src)
+{
+        int rc;
+
+        dst->range.level[0].sens = src->range.level[1].sens;
+        rc = ebitmap_cpy(&dst->range.level[0].cat, &src->range.level[1].cat);
+        if (rc)
+                goto out;
+
+        dst->range.level[1].sens = src->range.level[1].sens;
+        rc = ebitmap_cpy(&dst->range.level[1].cat, &src->range.level[1].cat);
+        if (rc)
+                ebitmap_destroy(&dst->range.level[0].cat);
+out:
+        return rc;
+}
+
 static inline int mls_context_cmp(struct context *c1, struct context *c2)
 {
         return ((c1->range.level[0].sens == c2->range.level[0].sens) &&