audit: use define's for audit version

Give names to the audit versions.  Just something for a userspace
programmer to know what the version provides.

Signed-off-by: Eric Paris <eparis@redhat.com>

diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h
index 14afb0d..3e1fbe9 100644 (file)
--- a/include/uapi/linux/audit.h
+++ b/include/uapi/linux/audit.h
@@ -320,6 +320,11 @@ enum {
 #define AUDIT_STATUS_RATE_LIMIT                0x0008
 #define AUDIT_STATUS_BACKLOG_LIMIT     0x0010
 #define AUDIT_STATUS_BACKLOG_WAIT_TIME 0x0020
+
+#define AUDIT_VERSION_BACKLOG_LIMIT    1
+#define AUDIT_VERSION_BACKLOG_WAIT_TIME        2
+#define AUDIT_VERSION_LATEST AUDIT_VERSION_BACKLOG_WAIT_TIME
+
                                /* Failure-to-log actions */
 #define AUDIT_FAIL_SILENT      0
 #define AUDIT_FAIL_PRINTK      1

diff --git a/kernel/audit.c b/kernel/audit.c
index 57d47f0..b671723 100644 (file)
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -792,7 +792,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                s.backlog_limit         = audit_backlog_limit;
                s.lost                  = atomic_read(&audit_lost);
                s.backlog               = skb_queue_len(&audit_skb_queue);
-               s.version               = 2;
+               s.version               = AUDIT_VERSION_LATEST;
                s.backlog_wait_time     = audit_backlog_wait_time;
                audit_send_reply(NETLINK_CB(skb).portid, seq, AUDIT_GET, 0, 0,
                                 &s, sizeof(s));