Re: [PATCH v2] audit: removing unused variable

From: Joe Perches
Date: Thu Oct 29 2015 - 00:32:57 EST


On Thu, 2015-10-29 at 09:41 +0530, Saurabh Sengar wrote:
> variable rc is unnecessary hence removing it,
> also as the return type of function audit_log_common_recv_msg is no
> where used changing it to void.

Almost, but not quite. Keep at it.

Ideally your first attempts at kernel patching
should be done in the drivers/staging/ directory
before attempting patches outside of that path.

> diff --git a/kernel/audit.c b/kernel/audit.c
[]
> @@ -684,25 +684,24 @@ static int audit_netlink_ok(struct sk_buff *skb, u16 msg_type)
> return err;
> }
>
> -static int audit_log_common_recv_msg(struct audit_buffer **ab, u16 msg_type)
> +static void audit_log_common_recv_msg(struct audit_buffer **ab, u16 msg_type)
> {
> - int rc = 0;
> uid_t uid = from_kuid(&init_user_ns, current_uid());
> pid_t pid = task_tgid_nr(current);
>
> if (!audit_enabled && msg_type != AUDIT_USER_AVC) {
> *ab = NULL;
> - return rc;
> + return ;

There's an unnecessary space before the semicolon.
This should be
return;

> }
>
> *ab = audit_log_start(NULL, GFP_KERNEL, msg_type);
> if (unlikely(!*ab))
> - return rc;
> + return ;

here too

> audit_log_format(*ab, "pid=%d uid=%u", pid, uid);
> audit_log_session_info(*ab);
> audit_log_task_context(*ab);
>
> - return rc;
> + return ;

No return statement necessary here at all

> }
>
> int is_audit_feature_set(int i)



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