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Commit ee080e6c authored by Eric Paris's avatar Eric Paris Committed by Al Viro
Browse files

Audit: cleanup netlink mesg handling 



The audit handling of netlink messages is all over the place.  Clean things
up, use predetermined macros, generally make it more readable.

Signed-off-by: default avatarEric Paris <eparis@redhat.com>
parent 038cbcf6

kernel/audit.c

+15 −15
Original line number Diff line number Diff line
@@ -528,22 +528,20 @@ struct sk_buff *audit_make_reply(int pid, int seq, int type, int done, 
{

	struct sk_buff	*skb;

	struct nlmsghdr	*nlh;

	int		len = NLMSG_SPACE(size);

	void		*data;

	int		flags = multi ? NLM_F_MULTI : 0;

	int		t     = done  ? NLMSG_DONE  : type;



	skb = alloc_skb(len, GFP_KERNEL);

	skb = nlmsg_new(size, GFP_KERNEL);

	if (!skb)

		return NULL;



	nlh		 = NLMSG_PUT(skb, pid, seq, t, size);

	nlh->nlmsg_flags = flags;

	nlh	= NLMSG_NEW(skb, pid, seq, t, size, flags);

	data	= NLMSG_DATA(nlh);

	memcpy(data, payload, size);

	return skb;



nlmsg_failure:			/* Used by NLMSG_PUT */

nlmsg_failure:			/* Used by NLMSG_NEW */

	if (skb)

		kfree_skb(skb);

	return NULL;
@@ -1083,18 +1081,20 @@ static struct audit_buffer * audit_buffer_alloc(struct audit_context *ctx, 
			goto err;

	}



	ab->skb = alloc_skb(AUDIT_BUFSIZ, gfp_mask);

	if (!ab->skb)

		goto err;



	ab->ctx = ctx;

	ab->gfp_mask = gfp_mask;

	nlh = (struct nlmsghdr *)skb_put(ab->skb, NLMSG_SPACE(0));

	nlh->nlmsg_type = type;

	nlh->nlmsg_flags = 0;

	nlh->nlmsg_pid = 0;

	nlh->nlmsg_seq = 0;



	ab->skb = nlmsg_new(AUDIT_BUFSIZ, gfp_mask);

	if (!ab->skb)

		goto nlmsg_failure;



	nlh = NLMSG_NEW(ab->skb, 0, 0, type, 0, 0);



	return ab;



nlmsg_failure:                  /* Used by NLMSG_NEW */

	kfree_skb(ab->skb);

	ab->skb = NULL;

err:

	audit_buffer_free(ab);

	return NULL;