Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6:
  VM/Security: add security hook to do_brk
  Security: round mmap hint address above mmap_min_addr
  security: protect from stack expantion into low vm addresses
  Security: allow capable check to permit mmap or low vm space
  SELinux: detect dead booleans
  SELinux: do not clear f_op when removing entries

1 files changed, 16 insertions, 0 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 520238cbae5d..1b7b95c67aca 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -12,6 +12,7 @@
 #include <linux/prio_tree.h>
 #include <linux/debug_locks.h>
 #include <linux/mm_types.h>
+#include <linux/security.h>
 
 struct mempolicy;
 struct anon_vma;
@@ -513,6 +514,21 @@ static inline void set_page_links(struct page *page, enum zone_type zone,
 }
 
 /*
+ * If a hint addr is less than mmap_min_addr change hint to be as
+ * low as possible but still greater than mmap_min_addr
+ */
+static inline unsigned long round_hint_to_min(unsigned long hint)
+{
+#ifdef CONFIG_SECURITY
+        hint &= PAGE_MASK;
+        if (((void *)hint != NULL) &&
+            (hint < mmap_min_addr))
+                return PAGE_ALIGN(mmap_min_addr);
+#endif
+        return hint;
+}
+
+/*
  * Some inline functions in vmstat.h depend on page_zone()
  */
 #include <linux/vmstat.h>