[PATCH lazy audit
James Antill
james.antill at redhat.com
Tue Aug 1 15:45:58 UTC 2006
On Tue, 2006-08-01 at 11:22 -0400, Alexander Viro wrote:
> Killing audit overhead in case when no rules are loaded. More detailed
> log (this is a composite of patch series from audit git tree, see audit.b23..
> lspp.b23 in there for individual changesets):
> [PATCH] introduce audit rules counter
> [PATCH] mark context of syscall entered with no rules as dummy
> [PATCH] don't bother with aux entires for dummy context
> [PATCH] take filling ->pid, etc. out of audit_get_context()
> move that stuff downstream and into the only branch where it'll be
> used.
>
> diff --git a/fs/namei.c b/fs/namei.c
> index 0ab26cb..55a1312 100644
> --- a/fs/namei.c
> +++ b/fs/namei.c
> @@ -159,7 +159,7 @@ char * getname(const char __user * filen
> #ifdef CONFIG_AUDITSYSCALL
> void putname(const char *name)
> {
> - if (unlikely(current->audit_context))
> + if (unlikely(!audit_dummy_context()))
> audit_putname(name);
> else
> __putname(name);
[...]
> +extern int audit_n_rules;
> #else
> #define audit_alloc(t) ({ 0; })
> #define audit_free(t) do { ; } while (0)
> #define audit_syscall_entry(ta,a,b,c,d,e) do { ; } while (0)
> #define audit_syscall_exit(f,r) do { ; } while (0)
> +#define audit_dummy_context() 0
> #define audit_getname(n) do { ; } while (0)
> #define audit_putname(n) do { ; } while (0)
> #define __audit_inode(n,i) do { ; } while (0)
This should be:
+#define audit_dummy_context() 1
...no?
--
James Antill - <james.antill at redhat.com>
setsockopt(fd, IPPROTO_TCP, TCP_CONGESTION, ...);
setsockopt(fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, ...);
setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, ...);
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