diff options
Diffstat (limited to 'net/netlabel/netlabel_kapi.c')
| -rw-r--r-- | net/netlabel/netlabel_kapi.c | 165 |
1 files changed, 145 insertions, 20 deletions
diff --git a/net/netlabel/netlabel_kapi.c b/net/netlabel/netlabel_kapi.c index fd9229db075..b0e582f2d37 100644 --- a/net/netlabel/netlabel_kapi.c +++ b/net/netlabel/netlabel_kapi.c @@ -619,8 +619,9 @@ int netlbl_enabled(void) } /** - * netlbl_socket_setattr - Label a socket using the correct protocol + * netlbl_sock_setattr - Label a socket using the correct protocol * @sk: the socket to label + * @family: protocol family * @secattr: the security attributes * * Description: @@ -633,29 +634,45 @@ int netlbl_enabled(void) * */ int netlbl_sock_setattr(struct sock *sk, + u16 family, const struct netlbl_lsm_secattr *secattr) { - int ret_val = -ENOENT; + int ret_val; struct netlbl_dom_map *dom_entry; rcu_read_lock(); dom_entry = netlbl_domhsh_getentry(secattr->domain); - if (dom_entry == NULL) + if (dom_entry == NULL) { + ret_val = -ENOENT; goto socket_setattr_return; - switch (dom_entry->type) { - case NETLBL_NLTYPE_ADDRSELECT: - ret_val = -EDESTADDRREQ; - break; - case NETLBL_NLTYPE_CIPSOV4: - ret_val = cipso_v4_sock_setattr(sk, - dom_entry->type_def.cipsov4, - secattr); + } + switch (family) { + case AF_INET: + switch (dom_entry->type) { + case NETLBL_NLTYPE_ADDRSELECT: + ret_val = -EDESTADDRREQ; + break; + case NETLBL_NLTYPE_CIPSOV4: + ret_val = cipso_v4_sock_setattr(sk, + dom_entry->type_def.cipsov4, + secattr); + break; + case NETLBL_NLTYPE_UNLABELED: + ret_val = 0; + break; + default: + ret_val = -ENOENT; + } break; - case NETLBL_NLTYPE_UNLABELED: +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + case AF_INET6: + /* since we don't support any IPv6 labeling protocols right + * now we can optimize everything away until we do */ ret_val = 0; break; +#endif /* IPv6 */ default: - ret_val = -ENOENT; + ret_val = -EPROTONOSUPPORT; } socket_setattr_return: @@ -689,9 +706,25 @@ void netlbl_sock_delattr(struct sock *sk) * on failure. * */ -int netlbl_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr) +int netlbl_sock_getattr(struct sock *sk, + struct netlbl_lsm_secattr *secattr) { - return cipso_v4_sock_getattr(sk, secattr); + int ret_val; + + switch (sk->sk_family) { + case AF_INET: + ret_val = cipso_v4_sock_getattr(sk, secattr); + break; +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + case AF_INET6: + ret_val = -ENOMSG; + break; +#endif /* IPv6 */ + default: + ret_val = -EPROTONOSUPPORT; + } + + return ret_val; } /** @@ -748,7 +781,7 @@ int netlbl_conn_setattr(struct sock *sk, break; #endif /* IPv6 */ default: - ret_val = 0; + ret_val = -EPROTONOSUPPORT; } conn_setattr_return: @@ -757,6 +790,90 @@ conn_setattr_return: } /** + * netlbl_req_setattr - Label a request socket using the correct protocol + * @req: the request socket to label + * @secattr: the security attributes + * + * Description: + * Attach the correct label to the given socket using the security attributes + * specified in @secattr. Returns zero on success, negative values on failure. + * + */ +int netlbl_req_setattr(struct request_sock *req, + const struct netlbl_lsm_secattr *secattr) +{ + int ret_val; + struct netlbl_dom_map *dom_entry; + struct netlbl_domaddr4_map *af4_entry; + u32 proto_type; + struct cipso_v4_doi *proto_cv4; + + rcu_read_lock(); + dom_entry = netlbl_domhsh_getentry(secattr->domain); + if (dom_entry == NULL) { + ret_val = -ENOENT; + goto req_setattr_return; + } + switch (req->rsk_ops->family) { + case AF_INET: + if (dom_entry->type == NETLBL_NLTYPE_ADDRSELECT) { + struct inet_request_sock *req_inet = inet_rsk(req); + af4_entry = netlbl_domhsh_getentry_af4(secattr->domain, + req_inet->rmt_addr); + if (af4_entry == NULL) { + ret_val = -ENOENT; + goto req_setattr_return; + } + proto_type = af4_entry->type; + proto_cv4 = af4_entry->type_def.cipsov4; + } else { + proto_type = dom_entry->type; + proto_cv4 = dom_entry->type_def.cipsov4; + } + switch (proto_type) { + case NETLBL_NLTYPE_CIPSOV4: + ret_val = cipso_v4_req_setattr(req, proto_cv4, secattr); + break; + case NETLBL_NLTYPE_UNLABELED: + /* just delete the protocols we support for right now + * but we could remove other protocols if needed */ + cipso_v4_req_delattr(req); + ret_val = 0; + break; + default: + ret_val = -ENOENT; + } + break; +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + case AF_INET6: + /* since we don't support any IPv6 labeling protocols right + * now we can optimize everything away until we do */ + ret_val = 0; + break; +#endif /* IPv6 */ + default: + ret_val = -EPROTONOSUPPORT; + } + +req_setattr_return: + rcu_read_unlock(); + return ret_val; +} + +/** +* netlbl_req_delattr - Delete all the NetLabel labels on a socket +* @req: the socket +* +* Description: +* Remove all the NetLabel labeling from @req. +* +*/ +void netlbl_req_delattr(struct request_sock *req) +{ + cipso_v4_req_delattr(req); +} + +/** * netlbl_skbuff_setattr - Label a packet using the correct protocol * @skb: the packet * @family: protocol family @@ -808,7 +925,7 @@ int netlbl_skbuff_setattr(struct sk_buff *skb, break; #endif /* IPv6 */ default: - ret_val = 0; + ret_val = -EPROTONOSUPPORT; } skbuff_setattr_return: @@ -833,9 +950,17 @@ int netlbl_skbuff_getattr(const struct sk_buff *skb, u16 family, struct netlbl_lsm_secattr *secattr) { - if (CIPSO_V4_OPTEXIST(skb) && - cipso_v4_skbuff_getattr(skb, secattr) == 0) - return 0; + switch (family) { + case AF_INET: + if (CIPSO_V4_OPTEXIST(skb) && + cipso_v4_skbuff_getattr(skb, secattr) == 0) + return 0; + break; +#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) + case AF_INET6: + break; +#endif /* IPv6 */ + } return netlbl_unlabel_getattr(skb, family, secattr); } |