Merge tag 'staging-3.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...

[~andy/linux] / security / smack / smack_access.c

diff --git a/security/smack/smack_access.c b/security/smack/smack_access.c
index b3b59b1e93d6e6b056789243b77f0b319e56c982..14293cd9b1e53b4a260e9258a5cad54c75d71204 100644 (file)
--- a/security/smack/smack_access.c
+++ b/security/smack/smack_access.c
@@ -84,6 +84,8 @@ int log_policy = SMACK_AUDIT_DENIED;
  *
  * Do the object check first because that is more
  * likely to differ.
+ *
+ * Allowing write access implies allowing locking.
  */
 int smk_access_entry(char *subject_label, char *object_label,
                        struct list_head *rule_list)
@@ -99,6 +101,11 @@ int smk_access_entry(char *subject_label, char *object_label,
                }
        }
 
+       /*
+        * MAY_WRITE implies MAY_LOCK.
+        */
+       if ((may & MAY_WRITE) == MAY_WRITE)
+               may |= MAY_LOCK;
        return may;
 }
 
@@ -245,6 +252,7 @@ out_audit:
 static inline void smack_str_from_perm(char *string, int access)
 {
        int i = 0;
+
        if (access & MAY_READ)
                string[i++] = 'r';
        if (access & MAY_WRITE)
@@ -255,6 +263,8 @@ static inline void smack_str_from_perm(char *string, int access)
                string[i++] = 'a';
        if (access & MAY_TRANSMUTE)
                string[i++] = 't';
+       if (access & MAY_LOCK)
+               string[i++] = 'l';
        string[i] = '\0';
 }
 /**