diff options
| author | Huw Davies <huw@codeweavers.com> | 2016-06-27 15:06:17 -0400 |
|---|---|---|
| committer | Paul Moore <paul@paul-moore.com> | 2016-06-27 15:06:17 -0400 |
| commit | 4fee5242bf41d9ad641d4c1b821e36eb7ba37fbf (patch) | |
| tree | 6b79290fc0dbeffe30945235ca86576b652c84dd /security/selinux/netlabel.c | |
| parent | 2e532b702834c07f614caf4489feb691e713232a (diff) | |
| download | lwn-4fee5242bf41d9ad641d4c1b821e36eb7ba37fbf.tar.gz lwn-4fee5242bf41d9ad641d4c1b821e36eb7ba37fbf.zip | |
calipso: Add a label cache.
This works in exactly the same way as the CIPSO label cache.
The idea is to allow the lsm to cache the result of a secattr
lookup so that it doesn't need to perform the lookup for
every skbuff.
It introduces two sysctl controls:
calipso_cache_enable - enables/disables the cache.
calipso_cache_bucket_size - sets the size of a cache bucket.
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'security/selinux/netlabel.c')
| -rw-r--r-- | security/selinux/netlabel.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/security/selinux/netlabel.c b/security/selinux/netlabel.c index dfca50dc292a..aaba6677ee2e 100644 --- a/security/selinux/netlabel.c +++ b/security/selinux/netlabel.c @@ -54,6 +54,7 @@ * */ static int selinux_netlbl_sidlookup_cached(struct sk_buff *skb, + u16 family, struct netlbl_lsm_secattr *secattr, u32 *sid) { @@ -63,7 +64,7 @@ static int selinux_netlbl_sidlookup_cached(struct sk_buff *skb, if (rc == 0 && (secattr->flags & NETLBL_SECATTR_CACHEABLE) && (secattr->flags & NETLBL_SECATTR_CACHE)) - netlbl_cache_add(skb, secattr); + netlbl_cache_add(skb, family, secattr); return rc; } @@ -214,7 +215,8 @@ int selinux_netlbl_skbuff_getsid(struct sk_buff *skb, netlbl_secattr_init(&secattr); rc = netlbl_skbuff_getattr(skb, family, &secattr); if (rc == 0 && secattr.flags != NETLBL_SECATTR_NONE) - rc = selinux_netlbl_sidlookup_cached(skb, &secattr, sid); + rc = selinux_netlbl_sidlookup_cached(skb, family, + &secattr, sid); else *sid = SECSID_NULL; *type = secattr.type; @@ -382,7 +384,8 @@ int selinux_netlbl_sock_rcv_skb(struct sk_security_struct *sksec, netlbl_secattr_init(&secattr); rc = netlbl_skbuff_getattr(skb, family, &secattr); if (rc == 0 && secattr.flags != NETLBL_SECATTR_NONE) - rc = selinux_netlbl_sidlookup_cached(skb, &secattr, &nlbl_sid); + rc = selinux_netlbl_sidlookup_cached(skb, family, + &secattr, &nlbl_sid); else nlbl_sid = SECINITSID_UNLABELED; netlbl_secattr_destroy(&secattr); |