diff options
| author | Patrick McHardy <kaber@trash.net> | 2006-03-20 18:00:36 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-03-20 18:00:36 -0800 |
| commit | 3cdc7c953eb1e1e1d1b82adbd140bf3451c165b1 (patch) | |
| tree | 82d44723c94904d52fc5234eaaa505688bdf0dc3 /net/ipv6 | |
| parent | 37f9f7334b86ffc3b8a1921842ae33cb9aa22ee3 (diff) | |
| download | linux-3cdc7c953eb1e1e1d1b82adbd140bf3451c165b1.tar.bz2 | |
[NETFILTER]: Change {ip,ip6,arp}_tables to use centralized error checking
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/netfilter/ip6_tables.c | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c index 74ff56c322f4..1cd70683f2e2 100644 --- a/net/ipv6/netfilter/ip6_tables.c +++ b/net/ipv6/netfilter/ip6_tables.c @@ -575,6 +575,7 @@ check_match(struct ip6t_entry_match *m, unsigned int *i) { struct ip6t_match *match; + int ret; match = try_then_request_module(xt_find_match(AF_INET6, m->u.user.name, m->u.user.revision), @@ -585,18 +586,27 @@ check_match(struct ip6t_entry_match *m, } m->u.kernel.match = match; + ret = xt_check_match(match, AF_INET6, m->u.match_size - sizeof(*m), + name, hookmask, ipv6->proto, + ipv6->invflags & IP6T_INV_PROTO); + if (ret) + goto err; + if (m->u.kernel.match->checkentry && !m->u.kernel.match->checkentry(name, ipv6, m->data, m->u.match_size - sizeof(*m), hookmask)) { - module_put(m->u.kernel.match->me); duprintf("ip_tables: check failed for `%s'.\n", m->u.kernel.match->name); - return -EINVAL; + ret = -EINVAL; + goto err; } (*i)++; return 0; +err: + module_put(m->u.kernel.match->me); + return ret; } static struct ip6t_target ip6t_standard_target; @@ -632,6 +642,12 @@ check_entry(struct ip6t_entry *e, const char *name, unsigned int size, } t->u.kernel.target = target; + ret = xt_check_target(target, AF_INET6, t->u.target_size - sizeof(*t), + name, e->comefrom, e->ipv6.proto, + e->ipv6.invflags & IP6T_INV_PROTO); + if (ret) + goto err; + if (t->u.kernel.target == &ip6t_standard_target) { if (!standard_check(t, size)) { ret = -EINVAL; @@ -642,16 +658,16 @@ check_entry(struct ip6t_entry *e, const char *name, unsigned int size, t->u.target_size - sizeof(*t), e->comefrom)) { - module_put(t->u.kernel.target->me); duprintf("ip_tables: check failed for `%s'.\n", t->u.kernel.target->name); ret = -EINVAL; - goto cleanup_matches; + goto err; } (*i)++; return 0; - + err: + module_put(t->u.kernel.target->me); cleanup_matches: IP6T_MATCH_ITERATE(e, cleanup_match, &j); return ret; |