diff options
Diffstat (limited to 'net/tipc/diag.c')
| -rw-r--r-- | net/tipc/diag.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/net/tipc/diag.c b/net/tipc/diag.c new file mode 100644 index 000000000..73137f4ae --- /dev/null +++ b/net/tipc/diag.c @@ -0,0 +1,116 @@ +/* + * net/tipc/diag.c: TIPC socket diag + * + * Copyright (c) 2018, Ericsson AB + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the names of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "ASIS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include "core.h" +#include "socket.h" +#include <linux/sock_diag.h> +#include <linux/tipc_sockets_diag.h> + +static u64 __tipc_diag_gen_cookie(struct sock *sk) +{ + u32 res[2]; + + sock_diag_save_cookie(sk, res); + return *((u64 *)res); +} + +static int __tipc_add_sock_diag(struct sk_buff *skb, + struct netlink_callback *cb, + struct tipc_sock *tsk) +{ + struct tipc_sock_diag_req *req = nlmsg_data(cb->nlh); + struct nlmsghdr *nlh; + int err; + + nlh = nlmsg_put_answer(skb, cb, SOCK_DIAG_BY_FAMILY, 0, + NLM_F_MULTI); + if (!nlh) + return -EMSGSIZE; + + err = tipc_sk_fill_sock_diag(skb, cb, tsk, req->tidiag_states, + __tipc_diag_gen_cookie); + if (err) + return err; + + nlmsg_end(skb, nlh); + return 0; +} + +static int tipc_diag_dump(struct sk_buff *skb, struct netlink_callback *cb) +{ + return tipc_nl_sk_walk(skb, cb, __tipc_add_sock_diag); +} + +static int tipc_sock_diag_handler_dump(struct sk_buff *skb, + struct nlmsghdr *h) +{ + int hdrlen = sizeof(struct tipc_sock_diag_req); + struct net *net = sock_net(skb->sk); + + if (nlmsg_len(h) < hdrlen) + return -EINVAL; + + if (h->nlmsg_flags & NLM_F_DUMP) { + struct netlink_dump_control c = { + .start = tipc_dump_start, + .dump = tipc_diag_dump, + .done = tipc_dump_done, + }; + netlink_dump_start(net->diag_nlsk, skb, h, &c); + return 0; + } + return -EOPNOTSUPP; +} + +static const struct sock_diag_handler tipc_sock_diag_handler = { + .family = AF_TIPC, + .dump = tipc_sock_diag_handler_dump, +}; + +static int __init tipc_diag_init(void) +{ + return sock_diag_register(&tipc_sock_diag_handler); +} + +static void __exit tipc_diag_exit(void) +{ + sock_diag_unregister(&tipc_sock_diag_handler); +} + +module_init(tipc_diag_init); +module_exit(tipc_diag_exit); + +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, AF_TIPC); |