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selinux: Remove audit dependency

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Auditing comes with a lot of overhead due to string assembly via
vsnprintf. It isn't actually needed to make SELinux work, so remove
SELinux's artificial dependency on it to make it possible to use SELinux
without the unneeded overhead.

Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com>
Change-Id: I26a7fc519a36b18defdbc05f74bdbefc57d04d1e
Signed-off-by: starlight5234 <starlight5234@protonmail.ch>
This commit is contained in:
Sultan Alsawaf 2019-04-17 18:02:18 -07:00 committed by Gagan Malvi
parent cd42298e3e
commit 450bb255ca
No known key found for this signature in database
GPG key ID: B932A7CE71E9198F
3 changed files with 13 additions and 1 deletions
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4
include/linux/audit.h
View file

@ -205,6 +205,10 @@ static inline int audit_log_task_context(struct audit_buffer *ab)
static inline void audit_log_task_info(struct audit_buffer *ab,
struct task_struct *tsk)
{ }
static inline int audit_update_lsm_rules(void)
{
return 0;
}
#define audit_enabled AUDIT_OFF
#endif /* CONFIG_AUDIT */

8
include/linux/lsm_audit.h
View file

@ -117,8 +117,16 @@ int ipv4_skb_to_auditdata(struct sk_buff *skb,
int ipv6_skb_to_auditdata(struct sk_buff *skb,
struct common_audit_data *ad, u8 *proto);
#ifdef CONFIG_AUDIT
void common_lsm_audit(struct common_audit_data *a,
void (*pre_audit)(struct audit_buffer *, void *),
void (*post_audit)(struct audit_buffer *, void *));
#else
static inline void common_lsm_audit(struct common_audit_data *a,
void (*pre_audit)(struct audit_buffer *, void *),
void (*post_audit)(struct audit_buffer *, void *))
{
}
#endif
#endif

2
security/selinux/Kconfig
View file

@ -1,6 +1,6 @@
config SECURITY_SELINUX
bool "NSA SELinux Support"
depends on SECURITY_NETWORK && AUDIT && NET && INET
depends on SECURITY_NETWORK && NET && INET
select NETWORK_SECMARK
default n
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