2 files changed, 33 insertions, 8 deletions

diff --git a/include/linux/audit.h b/include/linux/audit.h
index 729a4d165bcc..a40641954c29 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -73,6 +73,8 @@ struct audit_field {
         void                            *lsm_rule;
 };
 
+extern int is_audit_feature_set(int which);
+
 extern int __init audit_register_class(int class, unsigned *list);
 extern int audit_classify_syscall(int abi, unsigned syscall);
 extern int audit_classify_arch(int arch);
@@ -207,7 +209,7 @@ static inline int audit_get_sessionid(struct task_struct *tsk)
 
 extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
 extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
-extern int __audit_bprm(struct linux_binprm *bprm);
+extern void __audit_bprm(struct linux_binprm *bprm);
 extern int __audit_socketcall(int nargs, unsigned long *args);
 extern int __audit_sockaddr(int len, void *addr);
 extern void __audit_fd_pair(int fd1, int fd2);
@@ -236,11 +238,10 @@ static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid
         if (unlikely(!audit_dummy_context()))
                 __audit_ipc_set_perm(qbytes, uid, gid, mode);
 }
-static inline int audit_bprm(struct linux_binprm *bprm)
+static inline void audit_bprm(struct linux_binprm *bprm)
 {
         if (unlikely(!audit_dummy_context()))
-                return __audit_bprm(bprm);
-        return 0;
+                __audit_bprm(bprm);
 }
 static inline int audit_socketcall(int nargs, unsigned long *args)
 {
@@ -367,10 +368,8 @@ static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
 static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid,
                                         gid_t gid, umode_t mode)
 { }
-static inline int audit_bprm(struct linux_binprm *bprm)
-{
-        return 0;
-}
+static inline void audit_bprm(struct linux_binprm *bprm)
+{ }
 static inline int audit_socketcall(int nargs, unsigned long *args)
 {
         return 0;
diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h
index db0b825b4810..44b05a09f193 100644
--- a/include/uapi/linux/audit.h
+++ b/include/uapi/linux/audit.h
@@ -68,6 +68,9 @@
 #define AUDIT_MAKE_EQUIV        1015    /* Append to watched tree */
 #define AUDIT_TTY_GET           1016    /* Get TTY auditing status */
 #define AUDIT_TTY_SET           1017    /* Set TTY auditing status */
+#define AUDIT_SET_FEATURE       1018    /* Turn an audit feature on or off */
+#define AUDIT_GET_FEATURE       1019    /* Get which features are enabled */
+#define AUDIT_FEATURE_CHANGE    1020    /* audit log listing feature changes */
 
 #define AUDIT_FIRST_USER_MSG    1100    /* Userspace messages mostly uninteresting to kernel */
 #define AUDIT_USER_AVC          1107    /* We filter this differently */
@@ -357,6 +360,12 @@ enum {
 #define AUDIT_PERM_READ         4
 #define AUDIT_PERM_ATTR         8
 
+/* MAX_AUDIT_MESSAGE_LENGTH is set in audit:lib/libaudit.h as:
+ * 8970 // PATH_MAX*2+CONTEXT_SIZE*2+11+256+1
+ * max header+body+tailer: 44 + 29 + 32 + 262 + 7 + pad
+ */
+#define AUDIT_MESSAGE_TEXT_MAX  8560
+
 struct audit_status {
         __u32           mask;           /* Bit mask for valid entries */
         __u32           enabled;        /* 1 = enabled, 0 = disabled */
@@ -368,11 +377,28 @@ struct audit_status {
         __u32           backlog;        /* messages waiting in queue */
 };
 
+struct audit_features {
+#define AUDIT_FEATURE_VERSION   1
+        __u32   vers;
+        __u32   mask;           /* which bits we are dealing with */
+        __u32   features;       /* which feature to enable/disable */
+        __u32   lock;           /* which features to lock */
+};
+
+#define AUDIT_FEATURE_ONLY_UNSET_LOGINUID       0
+#define AUDIT_FEATURE_LOGINUID_IMMUTABLE        1
+#define AUDIT_LAST_FEATURE                      AUDIT_FEATURE_LOGINUID_IMMUTABLE
+
+#define audit_feature_valid(x)          ((x) >= 0 && (x) <= AUDIT_LAST_FEATURE)
+#define AUDIT_FEATURE_TO_MASK(x)        (1 << ((x) & 31)) /* mask for __u32 */
+
 struct audit_tty_status {
         __u32           enabled;        /* 1 = enabled, 0 = disabled */
         __u32           log_passwd;     /* 1 = enabled, 0 = disabled */
 };
 
+#define AUDIT_UID_UNSET (unsigned int)-1
+
 /* audit_rule_data supports filter rules with both integer and string
  * fields.  It corresponds with AUDIT_ADD_RULE, AUDIT_DEL_RULE and
  * AUDIT_LIST_RULES requests.