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authorEric Paris <eparis@redhat.com>2012-04-02 13:15:44 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-04-03 09:49:10 -0700
commit48c62af68a403ef1655546bd3e021070c8508573 (patch)
treeba938e4fb45d5bdaad2dad44071d0625f8e36945 /security/lsm_audit.c
parent3b3b0e4fc15efa507b902d90cea39e496a523c3b (diff)
download96b-common-48c62af68a403ef1655546bd3e021070c8508573.tar.gz
LSM: shrink the common_audit_data data union
After shrinking the common_audit_data stack usage for private LSM data I'm not going to shrink the data union. To do this I'm going to move anything larger than 2 void * ptrs to it's own structure and require it to be declared separately on the calling stack. Thus hot paths which don't need more than a couple pointer don't have to declare space to hold large unneeded structures. I could get this down to one void * by dealing with the key struct and the struct path. We'll see if that is helpful after taking care of networking. Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'security/lsm_audit.c')
-rw-r--r--security/lsm_audit.c66
1 files changed, 33 insertions, 33 deletions
diff --git a/security/lsm_audit.c b/security/lsm_audit.c
index 8b8f0902f6e5..e96c6aa17bb0 100644
--- a/security/lsm_audit.c
+++ b/security/lsm_audit.c
@@ -49,8 +49,8 @@ int ipv4_skb_to_auditdata(struct sk_buff *skb,
if (ih == NULL)
return -EINVAL;
- ad->u.net.v4info.saddr = ih->saddr;
- ad->u.net.v4info.daddr = ih->daddr;
+ ad->u.net->v4info.saddr = ih->saddr;
+ ad->u.net->v4info.daddr = ih->daddr;
if (proto)
*proto = ih->protocol;
@@ -64,8 +64,8 @@ int ipv4_skb_to_auditdata(struct sk_buff *skb,
if (th == NULL)
break;
- ad->u.net.sport = th->source;
- ad->u.net.dport = th->dest;
+ ad->u.net->sport = th->source;
+ ad->u.net->dport = th->dest;
break;
}
case IPPROTO_UDP: {
@@ -73,8 +73,8 @@ int ipv4_skb_to_auditdata(struct sk_buff *skb,
if (uh == NULL)
break;
- ad->u.net.sport = uh->source;
- ad->u.net.dport = uh->dest;
+ ad->u.net->sport = uh->source;
+ ad->u.net->dport = uh->dest;
break;
}
case IPPROTO_DCCP: {
@@ -82,16 +82,16 @@ int ipv4_skb_to_auditdata(struct sk_buff *skb,
if (dh == NULL)
break;
- ad->u.net.sport = dh->dccph_sport;
- ad->u.net.dport = dh->dccph_dport;
+ ad->u.net->sport = dh->dccph_sport;
+ ad->u.net->dport = dh->dccph_dport;
break;
}
case IPPROTO_SCTP: {
struct sctphdr *sh = sctp_hdr(skb);
if (sh == NULL)
break;
- ad->u.net.sport = sh->source;
- ad->u.net.dport = sh->dest;
+ ad->u.net->sport = sh->source;
+ ad->u.net->dport = sh->dest;
break;
}
default:
@@ -119,8 +119,8 @@ int ipv6_skb_to_auditdata(struct sk_buff *skb,
ip6 = ipv6_hdr(skb);
if (ip6 == NULL)
return -EINVAL;
- ad->u.net.v6info.saddr = ip6->saddr;
- ad->u.net.v6info.daddr = ip6->daddr;
+ ad->u.net->v6info.saddr = ip6->saddr;
+ ad->u.net->v6info.daddr = ip6->daddr;
ret = 0;
/* IPv6 can have several extension header before the Transport header
* skip them */
@@ -140,8 +140,8 @@ int ipv6_skb_to_auditdata(struct sk_buff *skb,
if (th == NULL)
break;
- ad->u.net.sport = th->source;
- ad->u.net.dport = th->dest;
+ ad->u.net->sport = th->source;
+ ad->u.net->dport = th->dest;
break;
}
case IPPROTO_UDP: {
@@ -151,8 +151,8 @@ int ipv6_skb_to_auditdata(struct sk_buff *skb,
if (uh == NULL)
break;
- ad->u.net.sport = uh->source;
- ad->u.net.dport = uh->dest;
+ ad->u.net->sport = uh->source;
+ ad->u.net->dport = uh->dest;
break;
}
case IPPROTO_DCCP: {
@@ -162,8 +162,8 @@ int ipv6_skb_to_auditdata(struct sk_buff *skb,
if (dh == NULL)
break;
- ad->u.net.sport = dh->dccph_sport;
- ad->u.net.dport = dh->dccph_dport;
+ ad->u.net->sport = dh->dccph_sport;
+ ad->u.net->dport = dh->dccph_dport;
break;
}
case IPPROTO_SCTP: {
@@ -172,8 +172,8 @@ int ipv6_skb_to_auditdata(struct sk_buff *skb,
sh = skb_header_pointer(skb, offset, sizeof(_sctph), &_sctph);
if (sh == NULL)
break;
- ad->u.net.sport = sh->source;
- ad->u.net.dport = sh->dest;
+ ad->u.net->sport = sh->source;
+ ad->u.net->dport = sh->dest;
break;
}
default:
@@ -281,8 +281,8 @@ static void dump_common_audit_data(struct audit_buffer *ab,
}
break;
case LSM_AUDIT_DATA_NET:
- if (a->u.net.sk) {
- struct sock *sk = a->u.net.sk;
+ if (a->u.net->sk) {
+ struct sock *sk = a->u.net->sk;
struct unix_sock *u;
int len = 0;
char *p = NULL;
@@ -330,29 +330,29 @@ static void dump_common_audit_data(struct audit_buffer *ab,
}
}
- switch (a->u.net.family) {
+ switch (a->u.net->family) {
case AF_INET:
- print_ipv4_addr(ab, a->u.net.v4info.saddr,
- a->u.net.sport,
+ print_ipv4_addr(ab, a->u.net->v4info.saddr,
+ a->u.net->sport,
"saddr", "src");
- print_ipv4_addr(ab, a->u.net.v4info.daddr,
- a->u.net.dport,
+ print_ipv4_addr(ab, a->u.net->v4info.daddr,
+ a->u.net->dport,
"daddr", "dest");
break;
case AF_INET6:
- print_ipv6_addr(ab, &a->u.net.v6info.saddr,
- a->u.net.sport,
+ print_ipv6_addr(ab, &a->u.net->v6info.saddr,
+ a->u.net->sport,
"saddr", "src");
- print_ipv6_addr(ab, &a->u.net.v6info.daddr,
- a->u.net.dport,
+ print_ipv6_addr(ab, &a->u.net->v6info.daddr,
+ a->u.net->dport,
"daddr", "dest");
break;
}
- if (a->u.net.netif > 0) {
+ if (a->u.net->netif > 0) {
struct net_device *dev;
/* NOTE: we always use init's namespace */
- dev = dev_get_by_index(&init_net, a->u.net.netif);
+ dev = dev_get_by_index(&init_net, a->u.net->netif);
if (dev) {
audit_log_format(ab, " netif=%s", dev->name);
dev_put(dev);