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authorDavid S. Miller <davem@davemloft.net>2012-03-29 05:11:39 -0400
committerDavid S. Miller <davem@davemloft.net>2012-04-01 18:11:37 -0400
commit1b34ec43c9b3de44a5420841ab293d1b2035a94c (patch)
tree8d6cf966c813e0e61001655179b5ef8e5f1b54b3 /net/sched/act_ipt.c
parent9360ffd1859720f6520cf59241909b74dae369d0 (diff)
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pkt_sched: Stop using NLA_PUT*().
These macros contain a hidden goto, and are thus extremely error prone and make code hard to audit. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/act_ipt.c')
-rw-r--r--net/sched/act_ipt.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c
index 60f8f616e8fa..0beba0e5312e 100644
--- a/net/sched/act_ipt.c
+++ b/net/sched/act_ipt.c
@@ -267,15 +267,17 @@ static int tcf_ipt_dump(struct sk_buff *skb, struct tc_action *a, int bind, int
c.refcnt = ipt->tcf_refcnt - ref;
strcpy(t->u.user.name, ipt->tcfi_t->u.kernel.target->name);
- NLA_PUT(skb, TCA_IPT_TARG, ipt->tcfi_t->u.user.target_size, t);
- NLA_PUT_U32(skb, TCA_IPT_INDEX, ipt->tcf_index);
- NLA_PUT_U32(skb, TCA_IPT_HOOK, ipt->tcfi_hook);
- NLA_PUT(skb, TCA_IPT_CNT, sizeof(struct tc_cnt), &c);
- NLA_PUT_STRING(skb, TCA_IPT_TABLE, ipt->tcfi_tname);
+ if (nla_put(skb, TCA_IPT_TARG, ipt->tcfi_t->u.user.target_size, t) ||
+ nla_put_u32(skb, TCA_IPT_INDEX, ipt->tcf_index) ||
+ nla_put_u32(skb, TCA_IPT_HOOK, ipt->tcfi_hook) ||
+ nla_put(skb, TCA_IPT_CNT, sizeof(struct tc_cnt), &c) ||
+ nla_put_string(skb, TCA_IPT_TABLE, ipt->tcfi_tname))
+ goto nla_put_failure;
tm.install = jiffies_to_clock_t(jiffies - ipt->tcf_tm.install);
tm.lastuse = jiffies_to_clock_t(jiffies - ipt->tcf_tm.lastuse);
tm.expires = jiffies_to_clock_t(ipt->tcf_tm.expires);
- NLA_PUT(skb, TCA_IPT_TM, sizeof (tm), &tm);
+ if (nla_put(skb, TCA_IPT_TM, sizeof (tm), &tm))
+ goto nla_put_failure;
kfree(t);
return skb->len;