AUDIT: pass size argument to audit_expand().
Let audit_expand() know how much it's expected to grow the buffer, in
the case that we have that information to hand.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/kernel/audit.c b/kernel/audit.c
index 2ddd1a2..1dd456c 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -687,10 +687,10 @@
* Returns 0 (no space) on failed expansion, or available space if
* successful.
*/
-static inline int audit_expand(struct audit_buffer *ab)
+static inline int audit_expand(struct audit_buffer *ab, int extra)
{
struct sk_buff *skb = ab->skb;
- int ret = pskb_expand_head(skb, skb_headroom(skb), AUDIT_BUFSIZ,
+ int ret = pskb_expand_head(skb, skb_headroom(skb), extra,
GFP_ATOMIC);
if (ret < 0) {
audit_log_lost("out of memory in audit_expand");
@@ -716,7 +716,7 @@
skb = ab->skb;
avail = skb_tailroom(skb);
if (avail == 0) {
- avail = audit_expand(ab);
+ avail = audit_expand(ab, AUDIT_BUFSIZ);
if (!avail)
goto out;
}
@@ -725,7 +725,7 @@
/* The printk buffer is 1024 bytes long, so if we get
* here and AUDIT_BUFSIZ is at least 1024, then we can
* log everything that printk could have logged. */
- avail = audit_expand(ab);
+ avail = audit_expand(ab, 1+len-avail);
if (!avail)
goto out;
len = vsnprintf(skb->tail, avail, fmt, args);