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| author | Hagen Paul Pfeifer <hagen@jauu.net> | 2009-02-20 10:48:06 +0100 |
|---|---|---|
| committer | Patrick McHardy <kaber@trash.net> | 2009-02-20 10:48:06 +0100 |
| commit | af07d241dc76f0a52c7ff04df3a3970020fe6157 (patch) | |
| tree | c1461cfc8c0ab342996efd6982e9b376dea62f54 /net | |
| parent | e478075c6f07a383c378fb400edc1a7407a941b0 (diff) | |
| download | linux-3.10-af07d241dc76f0a52c7ff04df3a3970020fe6157.tar.gz linux-3.10-af07d241dc76f0a52c7ff04df3a3970020fe6157.tar.bz2 linux-3.10-af07d241dc76f0a52c7ff04df3a3970020fe6157.zip | |
netfilter: fix hardcoded size assumptions
get_random_bytes() is sometimes called with a hard coded size assumption
of an integer. This could not be true for next centuries. This patch
replace it with a compile time statement.
Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/netfilter/nf_conntrack_core.c | 5 | ||||
| -rw-r--r-- | net/netfilter/nf_conntrack_expect.c | 3 | ||||
| -rw-r--r-- | net/netfilter/xt_hashlimit.c | 2 |
3 files changed, 6 insertions, 4 deletions
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index f3aa4e65b15..2235432c59d 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -472,7 +472,8 @@ struct nf_conn *nf_conntrack_alloc(struct net *net, struct nf_conn *ct; if (unlikely(!nf_conntrack_hash_rnd_initted)) { - get_random_bytes(&nf_conntrack_hash_rnd, 4); + get_random_bytes(&nf_conntrack_hash_rnd, + sizeof(nf_conntrack_hash_rnd)); nf_conntrack_hash_rnd_initted = 1; } @@ -1103,7 +1104,7 @@ int nf_conntrack_set_hashsize(const char *val, struct kernel_param *kp) /* We have to rehahs for the new table anyway, so we also can * use a newrandom seed */ - get_random_bytes(&rnd, 4); + get_random_bytes(&rnd, sizeof(rnd)); /* Lookups in the old hash might happen in parallel, which means we * might get false negatives during connection lookup. New connections diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c index 3a8a34a6d37..357ba39d4c8 100644 --- a/net/netfilter/nf_conntrack_expect.c +++ b/net/netfilter/nf_conntrack_expect.c @@ -72,7 +72,8 @@ static unsigned int nf_ct_expect_dst_hash(const struct nf_conntrack_tuple *tuple unsigned int hash; if (unlikely(!nf_ct_expect_hash_rnd_initted)) { - get_random_bytes(&nf_ct_expect_hash_rnd, 4); + get_random_bytes(&nf_ct_expect_hash_rnd, + sizeof(nf_ct_expect_hash_rnd)); nf_ct_expect_hash_rnd_initted = 1; } diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c index f97fded024c..2482055e1c5 100644 --- a/net/netfilter/xt_hashlimit.c +++ b/net/netfilter/xt_hashlimit.c @@ -149,7 +149,7 @@ dsthash_alloc_init(struct xt_hashlimit_htable *ht, /* initialize hash with random val at the time we allocate * the first hashtable entry */ if (!ht->rnd_initialized) { - get_random_bytes(&ht->rnd, 4); + get_random_bytes(&ht->rnd, sizeof(ht->rnd)); ht->rnd_initialized = 1; } |