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| author | Denis V. Lunev <den@openvz.org> | 2008-03-24 15:33:42 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-03-24 15:33:42 -0700 |
| commit | 2342fd7e146f05edeb13feb03490c13a1bdab2e0 (patch) | |
| tree | b4caffc7467211b673cf0a2bfafc52b7e2a29084 | |
| parent | f145049a06f470d0489f47cb83ff3ccb2a0de622 (diff) | |
| download | linux-2342fd7e146f05edeb13feb03490c13a1bdab2e0.tar.gz linux-2342fd7e146f05edeb13feb03490c13a1bdab2e0.tar.bz2 linux-2342fd7e146f05edeb13feb03490c13a1bdab2e0.zip | |
[NETNS]: Allow to create sockets in non-initial namespace.
Allow to create sockets in the namespace if the protocol ok with this.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/af_inet.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index a9e241cdc5b2..39ddb84b1b78 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -243,6 +243,23 @@ void build_ehash_secret(void) } EXPORT_SYMBOL(build_ehash_secret); +static inline int inet_netns_ok(struct net *net, int protocol) +{ + int hash; + struct net_protocol *ipprot; + + if (net == &init_net) + return 1; + + hash = protocol & (MAX_INET_PROTOS - 1); + ipprot = rcu_dereference(inet_protos[hash]); + + if (ipprot == NULL) + /* raw IP is OK */ + return 1; + return ipprot->netns_ok; +} + /* * Create an inet socket. */ @@ -259,9 +276,6 @@ static int inet_create(struct net *net, struct socket *sock, int protocol) int try_loading_module = 0; int err; - if (net != &init_net) - return -EAFNOSUPPORT; - if (sock->type != SOCK_RAW && sock->type != SOCK_DGRAM && !inet_ehash_secret) @@ -320,6 +334,10 @@ lookup_protocol: if (answer->capability > 0 && !capable(answer->capability)) goto out_rcu_unlock; + err = -EAFNOSUPPORT; + if (!inet_netns_ok(net, protocol)) + goto out_rcu_unlock; + sock->ops = answer->ops; answer_prot = answer->prot; answer_no_check = answer->no_check; |