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