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authorFlorian Westphal <fw@strlen.de>2016-04-01 14:17:24 +0200
committerSasha Levin <sasha.levin@oracle.com>2016-07-12 08:48:31 -0400
commitdda467549d44f4d39b4420511ddcf77d29e9b6b2 (patch)
treefd6146b4593e99a52d795402200cc833e9da7fd3
parent62e6fd2010f76a52adcf0cf016b5d7c402ec17aa (diff)
downloadlinux-linaro-stable-dda467549d44f4d39b4420511ddcf77d29e9b6b2.tar.gz
netfilter: x_tables: kill check_entry helper
[ Upstream commit aa412ba225dd3bc36d404c28cdc3d674850d80d0 ] Once we add more sanity testing to xt_check_entry_offsets it becomes relvant if we're expecting a 32bit 'config_compat' blob or a normal one. Since we already have a lot of similar-named functions (check_entry, compat_check_entry, find_and_check_entry, etc.) and the current incarnation is short just fold its contents into the callers. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
-rw-r--r--net/ipv4/netfilter/arp_tables.c19
-rw-r--r--net/ipv4/netfilter/ip_tables.c20
-rw-r--r--net/ipv6/netfilter/ip6_tables.c20
3 files changed, 24 insertions, 35 deletions
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index 57c994e1c214..dc5bd7a10457 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -490,14 +490,6 @@ static int mark_source_chains(const struct xt_table_info *newinfo,
return 1;
}
-static inline int check_entry(const struct arpt_entry *e)
-{
- if (!arp_checkentry(&e->arp))
- return -EINVAL;
-
- return xt_check_entry_offsets(e, e->target_offset, e->next_offset);
-}
-
static inline int check_target(struct arpt_entry *e, const char *name)
{
struct xt_entry_target *t = arpt_get_target(e);
@@ -587,7 +579,10 @@ static inline int check_entry_size_and_hooks(struct arpt_entry *e,
return -EINVAL;
}
- err = check_entry(e);
+ if (!arp_checkentry(&e->arp))
+ return -EINVAL;
+
+ err = xt_check_entry_offsets(e, e->target_offset, e->next_offset);
if (err)
return err;
@@ -1246,8 +1241,10 @@ check_compat_entry_size_and_hooks(struct compat_arpt_entry *e,
return -EINVAL;
}
- /* For purposes of check_entry casting the compat entry is fine */
- ret = check_entry((struct arpt_entry *)e);
+ if (!arp_checkentry(&e->arp))
+ return -EINVAL;
+
+ ret = xt_check_entry_offsets(e, e->target_offset, e->next_offset);
if (ret)
return ret;
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index cda0fa460f5e..eaf84eeaf126 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -584,15 +584,6 @@ static void cleanup_match(struct xt_entry_match *m, struct net *net)
}
static int
-check_entry(const struct ipt_entry *e)
-{
- if (!ip_checkentry(&e->ip))
- return -EINVAL;
-
- return xt_check_entry_offsets(e, e->target_offset, e->next_offset);
-}
-
-static int
check_match(struct xt_entry_match *m, struct xt_mtchk_param *par)
{
const struct ipt_ip *ip = par->entryinfo;
@@ -748,7 +739,10 @@ check_entry_size_and_hooks(struct ipt_entry *e,
return -EINVAL;
}
- err = check_entry(e);
+ if (!ip_checkentry(&e->ip))
+ return -EINVAL;
+
+ err = xt_check_entry_offsets(e, e->target_offset, e->next_offset);
if (err)
return err;
@@ -1512,8 +1506,10 @@ check_compat_entry_size_and_hooks(struct compat_ipt_entry *e,
return -EINVAL;
}
- /* For purposes of check_entry casting the compat entry is fine */
- ret = check_entry((struct ipt_entry *)e);
+ if (!ip_checkentry(&e->ip))
+ return -EINVAL;
+
+ ret = xt_check_entry_offsets(e, e->target_offset, e->next_offset);
if (ret)
return ret;
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index cc78d56e2c71..0822d538361f 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -593,15 +593,6 @@ static void cleanup_match(struct xt_entry_match *m, struct net *net)
module_put(par.match->me);
}
-static int
-check_entry(const struct ip6t_entry *e)
-{
- if (!ip6_checkentry(&e->ipv6))
- return -EINVAL;
-
- return xt_check_entry_offsets(e, e->target_offset, e->next_offset);
-}
-
static int check_match(struct xt_entry_match *m, struct xt_mtchk_param *par)
{
const struct ip6t_ip6 *ipv6 = par->entryinfo;
@@ -759,7 +750,10 @@ check_entry_size_and_hooks(struct ip6t_entry *e,
return -EINVAL;
}
- err = check_entry(e);
+ if (!ip6_checkentry(&e->ipv6))
+ return -EINVAL;
+
+ err = xt_check_entry_offsets(e, e->target_offset, e->next_offset);
if (err)
return err;
@@ -1524,8 +1518,10 @@ check_compat_entry_size_and_hooks(struct compat_ip6t_entry *e,
return -EINVAL;
}
- /* For purposes of check_entry casting the compat entry is fine */
- ret = check_entry((struct ip6t_entry *)e);
+ if (!ip6_checkentry(&e->ipv6))
+ return -EINVAL;
+
+ ret = xt_check_entry_offsets(e, e->target_offset, e->next_offset);
if (ret)
return ret;