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Diffstat (limited to 'net/ipv4/ip_options.c')
-rw-r--r--net/ipv4/ip_options.c43
1 files changed, 11 insertions, 32 deletions
diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index ddaa01ec2bce..948747aac4e2 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -519,15 +519,20 @@ void ip_options_undo(struct ip_options *opt)
}
}
-static struct ip_options_rcu *ip_options_get_alloc(const int optlen)
+int ip_options_get(struct net *net, struct ip_options_rcu **optp,
+ sockptr_t data, int optlen)
{
- return kzalloc(sizeof(struct ip_options_rcu) + ((optlen + 3) & ~3),
+ struct ip_options_rcu *opt;
+
+ opt = kzalloc(sizeof(struct ip_options_rcu) + ((optlen + 3) & ~3),
GFP_KERNEL);
-}
+ if (!opt)
+ return -ENOMEM;
+ if (optlen && copy_from_sockptr(opt->opt.__data, data, optlen)) {
+ kfree(opt);
+ return -EFAULT;
+ }
-static int ip_options_get_finish(struct net *net, struct ip_options_rcu **optp,
- struct ip_options_rcu *opt, int optlen)
-{
while (optlen & 3)
opt->opt.__data[optlen++] = IPOPT_END;
opt->opt.optlen = optlen;
@@ -540,32 +545,6 @@ static int ip_options_get_finish(struct net *net, struct ip_options_rcu **optp,
return 0;
}
-int ip_options_get_from_user(struct net *net, struct ip_options_rcu **optp,
- unsigned char __user *data, int optlen)
-{
- struct ip_options_rcu *opt = ip_options_get_alloc(optlen);
-
- if (!opt)
- return -ENOMEM;
- if (optlen && copy_from_user(opt->opt.__data, data, optlen)) {
- kfree(opt);
- return -EFAULT;
- }
- return ip_options_get_finish(net, optp, opt, optlen);
-}
-
-int ip_options_get(struct net *net, struct ip_options_rcu **optp,
- unsigned char *data, int optlen)
-{
- struct ip_options_rcu *opt = ip_options_get_alloc(optlen);
-
- if (!opt)
- return -ENOMEM;
- if (optlen)
- memcpy(opt->opt.__data, data, optlen);
- return ip_options_get_finish(net, optp, opt, optlen);
-}
-
void ip_forward_options(struct sk_buff *skb)
{
struct ip_options *opt = &(IPCB(skb)->opt);