Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 2 | * inet_diag.c Module for monitoring INET transport protocols sockets. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | */ |
| 11 | |
Ilpo Järvinen | 172589c | 2007-08-28 15:50:33 -0700 | [diff] [blame] | 12 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/module.h> |
| 14 | #include <linux/types.h> |
| 15 | #include <linux/fcntl.h> |
| 16 | #include <linux/random.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 17 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include <linux/cache.h> |
| 19 | #include <linux/init.h> |
| 20 | #include <linux/time.h> |
| 21 | |
| 22 | #include <net/icmp.h> |
| 23 | #include <net/tcp.h> |
| 24 | #include <net/ipv6.h> |
| 25 | #include <net/inet_common.h> |
Arnaldo Carvalho de Melo | 505cbfc | 2005-08-12 09:19:38 -0300 | [diff] [blame] | 26 | #include <net/inet_connection_sock.h> |
| 27 | #include <net/inet_hashtables.h> |
| 28 | #include <net/inet_timewait_sock.h> |
| 29 | #include <net/inet6_hashtables.h> |
Arnaldo Carvalho de Melo | dc5fc57 | 2007-03-25 23:06:12 -0700 | [diff] [blame] | 30 | #include <net/netlink.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | |
| 32 | #include <linux/inet.h> |
| 33 | #include <linux/stddef.h> |
| 34 | |
Arnaldo Carvalho de Melo | a8c2190 | 2005-08-12 12:56:38 -0300 | [diff] [blame] | 35 | #include <linux/inet_diag.h> |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 36 | #include <linux/sock_diag.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 38 | static const struct inet_diag_handler **inet_diag_table; |
| 39 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 40 | struct inet_diag_entry { |
Al Viro | 9f85529 | 2006-09-27 18:44:30 -0700 | [diff] [blame] | 41 | __be32 *saddr; |
| 42 | __be32 *daddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | u16 sport; |
| 44 | u16 dport; |
| 45 | u16 family; |
| 46 | u16 userlocks; |
| 47 | }; |
| 48 | |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 49 | static DEFINE_MUTEX(inet_diag_table_mutex); |
| 50 | |
Pavel Emelyanov | f13c95f | 2011-12-06 08:05:24 +0000 | [diff] [blame] | 51 | static const struct inet_diag_handler *inet_diag_lock_handler(int proto) |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 52 | { |
Pavel Emelyanov | f13c95f | 2011-12-06 08:05:24 +0000 | [diff] [blame] | 53 | if (!inet_diag_table[proto]) |
Pavel Emelyanov | aec8dc6 | 2011-12-15 02:43:27 +0000 | [diff] [blame] | 54 | request_module("net-pf-%d-proto-%d-type-%d-%d", PF_NETLINK, |
| 55 | NETLINK_SOCK_DIAG, AF_INET, proto); |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 56 | |
| 57 | mutex_lock(&inet_diag_table_mutex); |
Pavel Emelyanov | f13c95f | 2011-12-06 08:05:24 +0000 | [diff] [blame] | 58 | if (!inet_diag_table[proto]) |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 59 | return ERR_PTR(-ENOENT); |
| 60 | |
Pavel Emelyanov | f13c95f | 2011-12-06 08:05:24 +0000 | [diff] [blame] | 61 | return inet_diag_table[proto]; |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 62 | } |
| 63 | |
| 64 | static inline void inet_diag_unlock_handler( |
| 65 | const struct inet_diag_handler *handler) |
| 66 | { |
| 67 | mutex_unlock(&inet_diag_table_mutex); |
| 68 | } |
| 69 | |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 70 | int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 71 | struct sk_buff *skb, struct inet_diag_req_v2 *req, |
Eric W. Biederman | d06ca95 | 2012-05-24 17:58:08 -0600 | [diff] [blame] | 72 | struct user_namespace *user_ns, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 73 | u32 portid, u32 seq, u16 nlmsg_flags, |
Arnaldo Carvalho de Melo | dff2c03 | 2006-01-09 14:56:56 -0800 | [diff] [blame] | 74 | const struct nlmsghdr *unlh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | { |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 76 | const struct inet_sock *inet = inet_sk(sk); |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 77 | struct inet_diag_msg *r; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | struct nlmsghdr *nlh; |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 79 | struct nlattr *attr; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 80 | void *info = NULL; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 81 | const struct inet_diag_handler *handler; |
Pavel Emelyanov | a029fe2 | 2011-12-06 07:59:32 +0000 | [diff] [blame] | 82 | int ext = req->idiag_ext; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 83 | |
Pavel Emelyanov | a029fe2 | 2011-12-06 07:59:32 +0000 | [diff] [blame] | 84 | handler = inet_diag_table[req->sdiag_protocol]; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 85 | BUG_ON(handler == NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 87 | nlh = nlmsg_put(skb, portid, seq, unlh->nlmsg_type, sizeof(*r), |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 88 | nlmsg_flags); |
| 89 | if (!nlh) |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame] | 90 | return -EMSGSIZE; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 91 | |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame] | 92 | r = nlmsg_data(nlh); |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 93 | BUG_ON(sk->sk_state == TCP_TIME_WAIT); |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 94 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 95 | r->idiag_family = sk->sk_family; |
| 96 | r->idiag_state = sk->sk_state; |
| 97 | r->idiag_timer = 0; |
| 98 | r->idiag_retrans = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 100 | r->id.idiag_if = sk->sk_bound_dev_if; |
Pavel Emelyanov | f65c1b5 | 2011-12-15 02:43:44 +0000 | [diff] [blame] | 101 | sock_diag_save_cookie(sk, r->id.idiag_cookie); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 103 | r->id.idiag_sport = inet->inet_sport; |
| 104 | r->id.idiag_dport = inet->inet_dport; |
| 105 | r->id.idiag_src[0] = inet->inet_rcv_saddr; |
| 106 | r->id.idiag_dst[0] = inet->inet_daddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | |
Pavel Emelyanov | e4e541a | 2012-10-23 22:29:56 +0400 | [diff] [blame] | 108 | if (nla_put_u8(skb, INET_DIAG_SHUTDOWN, sk->sk_shutdown)) |
| 109 | goto errout; |
| 110 | |
Maciej Żenczykowski | 717b6d8 | 2011-11-22 16:03:10 -0500 | [diff] [blame] | 111 | /* IPv6 dual-stack sockets use inet->tos for IPv4 connections, |
| 112 | * hence this needs to be included regardless of socket family. |
| 113 | */ |
| 114 | if (ext & (1 << (INET_DIAG_TOS - 1))) |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 115 | if (nla_put_u8(skb, INET_DIAG_TOS, inet->tos) < 0) |
| 116 | goto errout; |
Maciej Żenczykowski | 717b6d8 | 2011-11-22 16:03:10 -0500 | [diff] [blame] | 117 | |
Eric Dumazet | dfd56b8 | 2011-12-10 09:48:31 +0000 | [diff] [blame] | 118 | #if IS_ENABLED(CONFIG_IPV6) |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 119 | if (r->idiag_family == AF_INET6) { |
Eric Dumazet | b71d1d4 | 2011-04-22 04:53:02 +0000 | [diff] [blame] | 120 | const struct ipv6_pinfo *np = inet6_sk(sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 122 | *(struct in6_addr *)r->id.idiag_src = np->rcv_saddr; |
| 123 | *(struct in6_addr *)r->id.idiag_dst = np->daddr; |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 124 | |
Maciej Żenczykowski | 06236ac | 2011-11-07 14:23:11 +0000 | [diff] [blame] | 125 | if (ext & (1 << (INET_DIAG_TCLASS - 1))) |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 126 | if (nla_put_u8(skb, INET_DIAG_TCLASS, np->tclass) < 0) |
| 127 | goto errout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | } |
| 129 | #endif |
| 130 | |
Eric W. Biederman | d06ca95 | 2012-05-24 17:58:08 -0600 | [diff] [blame] | 131 | r->idiag_uid = from_kuid_munged(user_ns, sock_i_uid(sk)); |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 132 | r->idiag_inode = sock_i_ino(sk); |
| 133 | |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 134 | if (ext & (1 << (INET_DIAG_MEMINFO - 1))) { |
| 135 | struct inet_diag_meminfo minfo = { |
| 136 | .idiag_rmem = sk_rmem_alloc_get(sk), |
| 137 | .idiag_wmem = sk->sk_wmem_queued, |
| 138 | .idiag_fmem = sk->sk_forward_alloc, |
| 139 | .idiag_tmem = sk_wmem_alloc_get(sk), |
| 140 | }; |
| 141 | |
| 142 | if (nla_put(skb, INET_DIAG_MEMINFO, sizeof(minfo), &minfo) < 0) |
| 143 | goto errout; |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 144 | } |
| 145 | |
Pavel Emelyanov | c0636fa | 2011-12-30 00:53:32 +0000 | [diff] [blame] | 146 | if (ext & (1 << (INET_DIAG_SKMEMINFO - 1))) |
| 147 | if (sock_diag_put_meminfo(sk, skb, INET_DIAG_SKMEMINFO)) |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 148 | goto errout; |
Pavel Emelyanov | c0636fa | 2011-12-30 00:53:32 +0000 | [diff] [blame] | 149 | |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 150 | if (icsk == NULL) { |
Shan Wei | 62ad6fc | 2012-04-24 18:15:41 +0000 | [diff] [blame] | 151 | handler->idiag_get_info(sk, r, NULL); |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 152 | goto out; |
| 153 | } |
| 154 | |
Ilpo Järvinen | 172589c | 2007-08-28 15:50:33 -0700 | [diff] [blame] | 155 | #define EXPIRES_IN_MS(tmo) DIV_ROUND_UP((tmo - jiffies) * 1000, HZ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 157 | if (icsk->icsk_pending == ICSK_TIME_RETRANS) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 158 | r->idiag_timer = 1; |
| 159 | r->idiag_retrans = icsk->icsk_retransmits; |
| 160 | r->idiag_expires = EXPIRES_IN_MS(icsk->icsk_timeout); |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 161 | } else if (icsk->icsk_pending == ICSK_TIME_PROBE0) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 162 | r->idiag_timer = 4; |
| 163 | r->idiag_retrans = icsk->icsk_probes_out; |
| 164 | r->idiag_expires = EXPIRES_IN_MS(icsk->icsk_timeout); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | } else if (timer_pending(&sk->sk_timer)) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 166 | r->idiag_timer = 2; |
| 167 | r->idiag_retrans = icsk->icsk_probes_out; |
| 168 | r->idiag_expires = EXPIRES_IN_MS(sk->sk_timer.expires); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | } else { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 170 | r->idiag_timer = 0; |
| 171 | r->idiag_expires = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | } |
| 173 | #undef EXPIRES_IN_MS |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 174 | |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 175 | if (ext & (1 << (INET_DIAG_INFO - 1))) { |
| 176 | attr = nla_reserve(skb, INET_DIAG_INFO, |
| 177 | sizeof(struct tcp_info)); |
| 178 | if (!attr) |
| 179 | goto errout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 181 | info = nla_data(attr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | } |
| 183 | |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 184 | if ((ext & (1 << (INET_DIAG_CONG - 1))) && icsk->icsk_ca_ops) |
| 185 | if (nla_put_string(skb, INET_DIAG_CONG, |
| 186 | icsk->icsk_ca_ops->name) < 0) |
| 187 | goto errout; |
| 188 | |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 189 | handler->idiag_get_info(sk, r, info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | |
Arnaldo Carvalho de Melo | 6687e98 | 2005-08-10 04:03:31 -0300 | [diff] [blame] | 191 | if (sk->sk_state < TCP_TIME_WAIT && |
| 192 | icsk->icsk_ca_ops && icsk->icsk_ca_ops->get_info) |
| 193 | icsk->icsk_ca_ops->get_info(sk, ext, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 195 | out: |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 196 | return nlmsg_end(skb, nlh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 198 | errout: |
| 199 | nlmsg_cancel(skb, nlh); |
Patrick McHardy | 2693256 | 2007-01-31 23:16:40 -0800 | [diff] [blame] | 200 | return -EMSGSIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | } |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 202 | EXPORT_SYMBOL_GPL(inet_sk_diag_fill); |
| 203 | |
| 204 | static int inet_csk_diag_fill(struct sock *sk, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 205 | struct sk_buff *skb, struct inet_diag_req_v2 *req, |
Eric W. Biederman | d06ca95 | 2012-05-24 17:58:08 -0600 | [diff] [blame] | 206 | struct user_namespace *user_ns, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 207 | u32 portid, u32 seq, u16 nlmsg_flags, |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 208 | const struct nlmsghdr *unlh) |
| 209 | { |
| 210 | return inet_sk_diag_fill(sk, inet_csk(sk), |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 211 | skb, req, user_ns, portid, seq, nlmsg_flags, unlh); |
Pavel Emelyanov | 3c4d05c | 2011-12-09 06:23:00 +0000 | [diff] [blame] | 212 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 214 | static int inet_twsk_diag_fill(struct inet_timewait_sock *tw, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 215 | struct sk_buff *skb, struct inet_diag_req_v2 *req, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 216 | u32 portid, u32 seq, u16 nlmsg_flags, |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 217 | const struct nlmsghdr *unlh) |
| 218 | { |
| 219 | long tmo; |
| 220 | struct inet_diag_msg *r; |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 221 | struct nlmsghdr *nlh; |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 222 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 223 | nlh = nlmsg_put(skb, portid, seq, unlh->nlmsg_type, sizeof(*r), |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 224 | nlmsg_flags); |
| 225 | if (!nlh) |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame] | 226 | return -EMSGSIZE; |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame] | 227 | |
| 228 | r = nlmsg_data(nlh); |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 229 | BUG_ON(tw->tw_state != TCP_TIME_WAIT); |
| 230 | |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 231 | tmo = tw->tw_ttd - jiffies; |
| 232 | if (tmo < 0) |
| 233 | tmo = 0; |
| 234 | |
| 235 | r->idiag_family = tw->tw_family; |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 236 | r->idiag_retrans = 0; |
| 237 | r->id.idiag_if = tw->tw_bound_dev_if; |
Pavel Emelyanov | f65c1b5 | 2011-12-15 02:43:44 +0000 | [diff] [blame] | 238 | sock_diag_save_cookie(tw, r->id.idiag_cookie); |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 239 | r->id.idiag_sport = tw->tw_sport; |
| 240 | r->id.idiag_dport = tw->tw_dport; |
| 241 | r->id.idiag_src[0] = tw->tw_rcv_saddr; |
| 242 | r->id.idiag_dst[0] = tw->tw_daddr; |
| 243 | r->idiag_state = tw->tw_substate; |
| 244 | r->idiag_timer = 3; |
Ilpo Järvinen | 172589c | 2007-08-28 15:50:33 -0700 | [diff] [blame] | 245 | r->idiag_expires = DIV_ROUND_UP(tmo * 1000, HZ); |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 246 | r->idiag_rqueue = 0; |
| 247 | r->idiag_wqueue = 0; |
| 248 | r->idiag_uid = 0; |
| 249 | r->idiag_inode = 0; |
Eric Dumazet | dfd56b8 | 2011-12-10 09:48:31 +0000 | [diff] [blame] | 250 | #if IS_ENABLED(CONFIG_IPV6) |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 251 | if (tw->tw_family == AF_INET6) { |
| 252 | const struct inet6_timewait_sock *tw6 = |
| 253 | inet6_twsk((struct sock *)tw); |
| 254 | |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 255 | *(struct in6_addr *)r->id.idiag_src = tw6->tw_v6_rcv_saddr; |
| 256 | *(struct in6_addr *)r->id.idiag_dst = tw6->tw_v6_daddr; |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 257 | } |
| 258 | #endif |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 259 | |
| 260 | return nlmsg_end(skb, nlh); |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 261 | } |
| 262 | |
Arnaldo Carvalho de Melo | dff2c03 | 2006-01-09 14:56:56 -0800 | [diff] [blame] | 263 | static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, |
Eric W. Biederman | d06ca95 | 2012-05-24 17:58:08 -0600 | [diff] [blame] | 264 | struct inet_diag_req_v2 *r, |
| 265 | struct user_namespace *user_ns, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 266 | u32 portid, u32 seq, u16 nlmsg_flags, |
Arnaldo Carvalho de Melo | dff2c03 | 2006-01-09 14:56:56 -0800 | [diff] [blame] | 267 | const struct nlmsghdr *unlh) |
| 268 | { |
| 269 | if (sk->sk_state == TCP_TIME_WAIT) |
| 270 | return inet_twsk_diag_fill((struct inet_timewait_sock *)sk, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 271 | skb, r, portid, seq, nlmsg_flags, |
Arnaldo Carvalho de Melo | dff2c03 | 2006-01-09 14:56:56 -0800 | [diff] [blame] | 272 | unlh); |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 273 | return inet_csk_diag_fill(sk, skb, r, user_ns, portid, seq, nlmsg_flags, unlh); |
Arnaldo Carvalho de Melo | dff2c03 | 2006-01-09 14:56:56 -0800 | [diff] [blame] | 274 | } |
| 275 | |
Pavel Emelyanov | 1942c51 | 2011-12-09 06:23:18 +0000 | [diff] [blame] | 276 | int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *in_skb, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 277 | const struct nlmsghdr *nlh, struct inet_diag_req_v2 *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | { |
| 279 | int err; |
| 280 | struct sock *sk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | struct sk_buff *rep; |
Andrey Vagin | 51d7ccc | 2012-07-16 04:28:49 +0000 | [diff] [blame] | 282 | struct net *net = sock_net(in_skb->sk); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 283 | |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 284 | err = -EINVAL; |
Pavel Emelyanov | fe50ce2 | 2011-12-06 07:58:39 +0000 | [diff] [blame] | 285 | if (req->sdiag_family == AF_INET) { |
Andrey Vagin | 51d7ccc | 2012-07-16 04:28:49 +0000 | [diff] [blame] | 286 | sk = inet_lookup(net, hashinfo, req->id.idiag_dst[0], |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 287 | req->id.idiag_dport, req->id.idiag_src[0], |
| 288 | req->id.idiag_sport, req->id.idiag_if); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | } |
Eric Dumazet | dfd56b8 | 2011-12-10 09:48:31 +0000 | [diff] [blame] | 290 | #if IS_ENABLED(CONFIG_IPV6) |
Pavel Emelyanov | fe50ce2 | 2011-12-06 07:58:39 +0000 | [diff] [blame] | 291 | else if (req->sdiag_family == AF_INET6) { |
Andrey Vagin | 51d7ccc | 2012-07-16 04:28:49 +0000 | [diff] [blame] | 292 | sk = inet6_lookup(net, hashinfo, |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 293 | (struct in6_addr *)req->id.idiag_dst, |
| 294 | req->id.idiag_dport, |
| 295 | (struct in6_addr *)req->id.idiag_src, |
| 296 | req->id.idiag_sport, |
| 297 | req->id.idiag_if); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | } |
| 299 | #endif |
| 300 | else { |
Pavel Emelyanov | 476f7db | 2011-12-09 06:22:10 +0000 | [diff] [blame] | 301 | goto out_nosk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | } |
| 303 | |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 304 | err = -ENOENT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | if (sk == NULL) |
Pavel Emelyanov | 476f7db | 2011-12-09 06:22:10 +0000 | [diff] [blame] | 306 | goto out_nosk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | |
Pavel Emelyanov | f65c1b5 | 2011-12-15 02:43:44 +0000 | [diff] [blame] | 308 | err = sock_diag_check_cookie(sk, req->id.idiag_cookie); |
Pavel Emelyanov | b005ab4 | 2011-12-09 06:21:53 +0000 | [diff] [blame] | 309 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | goto out; |
| 311 | |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 312 | rep = nlmsg_new(sizeof(struct inet_diag_msg) + |
| 313 | sizeof(struct inet_diag_meminfo) + |
| 314 | sizeof(struct tcp_info) + 64, GFP_KERNEL); |
| 315 | if (!rep) { |
| 316 | err = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | goto out; |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 318 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | |
Pavel Emelyanov | a029fe2 | 2011-12-06 07:59:32 +0000 | [diff] [blame] | 320 | err = sk_diag_fill(sk, rep, req, |
Eric W. Biederman | d06ca95 | 2012-05-24 17:58:08 -0600 | [diff] [blame] | 321 | sk_user_ns(NETLINK_CB(in_skb).ssk), |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 322 | NETLINK_CB(in_skb).portid, |
Patrick McHardy | 2693256 | 2007-01-31 23:16:40 -0800 | [diff] [blame] | 323 | nlh->nlmsg_seq, 0, nlh); |
| 324 | if (err < 0) { |
| 325 | WARN_ON(err == -EMSGSIZE); |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 326 | nlmsg_free(rep); |
Patrick McHardy | 2693256 | 2007-01-31 23:16:40 -0800 | [diff] [blame] | 327 | goto out; |
| 328 | } |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 329 | err = netlink_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).portid, |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 330 | MSG_DONTWAIT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | if (err > 0) |
| 332 | err = 0; |
| 333 | |
| 334 | out: |
| 335 | if (sk) { |
| 336 | if (sk->sk_state == TCP_TIME_WAIT) |
Arnaldo Carvalho de Melo | 8feaf0c0 | 2005-08-09 20:09:30 -0700 | [diff] [blame] | 337 | inet_twsk_put((struct inet_timewait_sock *)sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | else |
| 339 | sock_put(sk); |
| 340 | } |
Pavel Emelyanov | 476f7db | 2011-12-09 06:22:10 +0000 | [diff] [blame] | 341 | out_nosk: |
| 342 | return err; |
| 343 | } |
Pavel Emelyanov | 1942c51 | 2011-12-09 06:23:18 +0000 | [diff] [blame] | 344 | EXPORT_SYMBOL_GPL(inet_diag_dump_one_icsk); |
Pavel Emelyanov | 476f7db | 2011-12-09 06:22:10 +0000 | [diff] [blame] | 345 | |
| 346 | static int inet_diag_get_exact(struct sk_buff *in_skb, |
| 347 | const struct nlmsghdr *nlh, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 348 | struct inet_diag_req_v2 *req) |
Pavel Emelyanov | 476f7db | 2011-12-09 06:22:10 +0000 | [diff] [blame] | 349 | { |
| 350 | const struct inet_diag_handler *handler; |
| 351 | int err; |
| 352 | |
| 353 | handler = inet_diag_lock_handler(req->sdiag_protocol); |
| 354 | if (IS_ERR(handler)) |
| 355 | err = PTR_ERR(handler); |
| 356 | else |
Pavel Emelyanov | 1942c51 | 2011-12-09 06:23:18 +0000 | [diff] [blame] | 357 | err = handler->dump_one(in_skb, nlh, req); |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 358 | inet_diag_unlock_handler(handler); |
Pavel Emelyanov | 476f7db | 2011-12-09 06:22:10 +0000 | [diff] [blame] | 359 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | return err; |
| 361 | } |
| 362 | |
Al Viro | 9f85529 | 2006-09-27 18:44:30 -0700 | [diff] [blame] | 363 | static int bitstring_match(const __be32 *a1, const __be32 *a2, int bits) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | { |
| 365 | int words = bits >> 5; |
| 366 | |
| 367 | bits &= 0x1f; |
| 368 | |
| 369 | if (words) { |
| 370 | if (memcmp(a1, a2, words << 2)) |
| 371 | return 0; |
| 372 | } |
| 373 | if (bits) { |
Al Viro | 9f85529 | 2006-09-27 18:44:30 -0700 | [diff] [blame] | 374 | __be32 w1, w2; |
| 375 | __be32 mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | |
| 377 | w1 = a1[words]; |
| 378 | w2 = a2[words]; |
| 379 | |
| 380 | mask = htonl((0xffffffff) << (32 - bits)); |
| 381 | |
| 382 | if ((w1 ^ w2) & mask) |
| 383 | return 0; |
| 384 | } |
| 385 | |
| 386 | return 1; |
| 387 | } |
| 388 | |
| 389 | |
Pavel Emelyanov | 87c22ea | 2011-12-09 06:21:34 +0000 | [diff] [blame] | 390 | static int inet_diag_bc_run(const struct nlattr *_bc, |
| 391 | const struct inet_diag_entry *entry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | { |
Pavel Emelyanov | 87c22ea | 2011-12-09 06:21:34 +0000 | [diff] [blame] | 393 | const void *bc = nla_data(_bc); |
| 394 | int len = nla_len(_bc); |
| 395 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | while (len > 0) { |
| 397 | int yes = 1; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 398 | const struct inet_diag_bc_op *op = bc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | |
| 400 | switch (op->code) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 401 | case INET_DIAG_BC_NOP: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 403 | case INET_DIAG_BC_JMP: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | yes = 0; |
| 405 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 406 | case INET_DIAG_BC_S_GE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | yes = entry->sport >= op[1].no; |
| 408 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 409 | case INET_DIAG_BC_S_LE: |
Roel Kluin | b4ced2b | 2010-01-19 14:12:20 -0800 | [diff] [blame] | 410 | yes = entry->sport <= op[1].no; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 412 | case INET_DIAG_BC_D_GE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | yes = entry->dport >= op[1].no; |
| 414 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 415 | case INET_DIAG_BC_D_LE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | yes = entry->dport <= op[1].no; |
| 417 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 418 | case INET_DIAG_BC_AUTO: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | yes = !(entry->userlocks & SOCK_BINDPORT_LOCK); |
| 420 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 421 | case INET_DIAG_BC_S_COND: |
Arnaldo Carvalho de Melo | a8c2190 | 2005-08-12 12:56:38 -0300 | [diff] [blame] | 422 | case INET_DIAG_BC_D_COND: { |
| 423 | struct inet_diag_hostcond *cond; |
Al Viro | 9f85529 | 2006-09-27 18:44:30 -0700 | [diff] [blame] | 424 | __be32 *addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | |
Arnaldo Carvalho de Melo | a8c2190 | 2005-08-12 12:56:38 -0300 | [diff] [blame] | 426 | cond = (struct inet_diag_hostcond *)(op + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | if (cond->port != -1 && |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 428 | cond->port != (op->code == INET_DIAG_BC_S_COND ? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | entry->sport : entry->dport)) { |
| 430 | yes = 0; |
| 431 | break; |
| 432 | } |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 433 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | if (cond->prefix_len == 0) |
| 435 | break; |
| 436 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 437 | if (op->code == INET_DIAG_BC_S_COND) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | addr = entry->saddr; |
| 439 | else |
| 440 | addr = entry->daddr; |
| 441 | |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 442 | if (bitstring_match(addr, cond->addr, |
| 443 | cond->prefix_len)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | break; |
| 445 | if (entry->family == AF_INET6 && |
| 446 | cond->family == AF_INET) { |
| 447 | if (addr[0] == 0 && addr[1] == 0 && |
| 448 | addr[2] == htonl(0xffff) && |
Arnaldo Carvalho de Melo | a8c2190 | 2005-08-12 12:56:38 -0300 | [diff] [blame] | 449 | bitstring_match(addr + 3, cond->addr, |
YOSHIFUJI Hideaki | e905a9e | 2007-02-09 23:24:47 +0900 | [diff] [blame] | 450 | cond->prefix_len)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | break; |
| 452 | } |
| 453 | yes = 0; |
| 454 | break; |
| 455 | } |
| 456 | } |
| 457 | |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 458 | if (yes) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | len -= op->yes; |
| 460 | bc += op->yes; |
| 461 | } else { |
| 462 | len -= op->no; |
| 463 | bc += op->no; |
| 464 | } |
| 465 | } |
Eric Dumazet | a02cec2 | 2010-09-22 20:43:57 +0000 | [diff] [blame] | 466 | return len == 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | } |
| 468 | |
Pavel Emelyanov | 8d07d15 | 2011-12-09 06:22:44 +0000 | [diff] [blame] | 469 | int inet_diag_bc_sk(const struct nlattr *bc, struct sock *sk) |
| 470 | { |
| 471 | struct inet_diag_entry entry; |
| 472 | struct inet_sock *inet = inet_sk(sk); |
| 473 | |
| 474 | if (bc == NULL) |
| 475 | return 1; |
| 476 | |
| 477 | entry.family = sk->sk_family; |
Eric Dumazet | dfd56b8 | 2011-12-10 09:48:31 +0000 | [diff] [blame] | 478 | #if IS_ENABLED(CONFIG_IPV6) |
Pavel Emelyanov | 8d07d15 | 2011-12-09 06:22:44 +0000 | [diff] [blame] | 479 | if (entry.family == AF_INET6) { |
| 480 | struct ipv6_pinfo *np = inet6_sk(sk); |
| 481 | |
| 482 | entry.saddr = np->rcv_saddr.s6_addr32; |
| 483 | entry.daddr = np->daddr.s6_addr32; |
| 484 | } else |
| 485 | #endif |
| 486 | { |
| 487 | entry.saddr = &inet->inet_rcv_saddr; |
| 488 | entry.daddr = &inet->inet_daddr; |
| 489 | } |
| 490 | entry.sport = inet->inet_num; |
| 491 | entry.dport = ntohs(inet->inet_dport); |
| 492 | entry.userlocks = sk->sk_userlocks; |
| 493 | |
| 494 | return inet_diag_bc_run(bc, &entry); |
| 495 | } |
| 496 | EXPORT_SYMBOL_GPL(inet_diag_bc_sk); |
| 497 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | static int valid_cc(const void *bc, int len, int cc) |
| 499 | { |
| 500 | while (len >= 0) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 501 | const struct inet_diag_bc_op *op = bc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | |
| 503 | if (cc > len) |
| 504 | return 0; |
| 505 | if (cc == len) |
| 506 | return 1; |
Eric Dumazet | eeb1497 | 2011-06-17 16:25:39 -0400 | [diff] [blame] | 507 | if (op->yes < 4 || op->yes & 3) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | return 0; |
| 509 | len -= op->yes; |
| 510 | bc += op->yes; |
| 511 | } |
| 512 | return 0; |
| 513 | } |
| 514 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 515 | static int inet_diag_bc_audit(const void *bytecode, int bytecode_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | { |
Eric Dumazet | eeb1497 | 2011-06-17 16:25:39 -0400 | [diff] [blame] | 517 | const void *bc = bytecode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | int len = bytecode_len; |
| 519 | |
| 520 | while (len > 0) { |
Eric Dumazet | eeb1497 | 2011-06-17 16:25:39 -0400 | [diff] [blame] | 521 | const struct inet_diag_bc_op *op = bc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | |
| 523 | //printk("BC: %d %d %d {%d} / %d\n", op->code, op->yes, op->no, op[1].no, len); |
| 524 | switch (op->code) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 525 | case INET_DIAG_BC_AUTO: |
| 526 | case INET_DIAG_BC_S_COND: |
| 527 | case INET_DIAG_BC_D_COND: |
| 528 | case INET_DIAG_BC_S_GE: |
| 529 | case INET_DIAG_BC_S_LE: |
| 530 | case INET_DIAG_BC_D_GE: |
| 531 | case INET_DIAG_BC_D_LE: |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 532 | case INET_DIAG_BC_JMP: |
Eric Dumazet | eeb1497 | 2011-06-17 16:25:39 -0400 | [diff] [blame] | 533 | if (op->no < 4 || op->no > len + 4 || op->no & 3) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | return -EINVAL; |
| 535 | if (op->no < len && |
Arnaldo Carvalho de Melo | a8c2190 | 2005-08-12 12:56:38 -0300 | [diff] [blame] | 536 | !valid_cc(bytecode, bytecode_len, len - op->no)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | return -EINVAL; |
| 538 | break; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 539 | case INET_DIAG_BC_NOP: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | break; |
| 541 | default: |
| 542 | return -EINVAL; |
| 543 | } |
Eric Dumazet | eeb1497 | 2011-06-17 16:25:39 -0400 | [diff] [blame] | 544 | if (op->yes < 4 || op->yes > len + 4 || op->yes & 3) |
| 545 | return -EINVAL; |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 546 | bc += op->yes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | len -= op->yes; |
| 548 | } |
| 549 | return len == 0 ? 0 : -EINVAL; |
| 550 | } |
| 551 | |
Arnaldo Carvalho de Melo | dff2c03 | 2006-01-09 14:56:56 -0800 | [diff] [blame] | 552 | static int inet_csk_diag_dump(struct sock *sk, |
| 553 | struct sk_buff *skb, |
Pavel Emelyanov | 37f352b | 2011-12-06 07:57:26 +0000 | [diff] [blame] | 554 | struct netlink_callback *cb, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 555 | struct inet_diag_req_v2 *r, |
Pavel Emelyanov | 37f352b | 2011-12-06 07:57:26 +0000 | [diff] [blame] | 556 | const struct nlattr *bc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | { |
Pavel Emelyanov | 8d07d15 | 2011-12-09 06:22:44 +0000 | [diff] [blame] | 558 | if (!inet_diag_bc_sk(bc, sk)) |
| 559 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | |
Pavel Emelyanov | a029fe2 | 2011-12-06 07:59:32 +0000 | [diff] [blame] | 561 | return inet_csk_diag_fill(sk, skb, r, |
Eric W. Biederman | d06ca95 | 2012-05-24 17:58:08 -0600 | [diff] [blame] | 562 | sk_user_ns(NETLINK_CB(cb->skb).ssk), |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 563 | NETLINK_CB(cb->skb).portid, |
Arnaldo Carvalho de Melo | dff2c03 | 2006-01-09 14:56:56 -0800 | [diff] [blame] | 564 | cb->nlh->nlmsg_seq, NLM_F_MULTI, cb->nlh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | } |
| 566 | |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 567 | static int inet_twsk_diag_dump(struct inet_timewait_sock *tw, |
| 568 | struct sk_buff *skb, |
Pavel Emelyanov | 37f352b | 2011-12-06 07:57:26 +0000 | [diff] [blame] | 569 | struct netlink_callback *cb, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 570 | struct inet_diag_req_v2 *r, |
Pavel Emelyanov | 37f352b | 2011-12-06 07:57:26 +0000 | [diff] [blame] | 571 | const struct nlattr *bc) |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 572 | { |
Pavel Emelyanov | 37f352b | 2011-12-06 07:57:26 +0000 | [diff] [blame] | 573 | if (bc != NULL) { |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 574 | struct inet_diag_entry entry; |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 575 | |
| 576 | entry.family = tw->tw_family; |
Eric Dumazet | dfd56b8 | 2011-12-10 09:48:31 +0000 | [diff] [blame] | 577 | #if IS_ENABLED(CONFIG_IPV6) |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 578 | if (tw->tw_family == AF_INET6) { |
| 579 | struct inet6_timewait_sock *tw6 = |
| 580 | inet6_twsk((struct sock *)tw); |
| 581 | entry.saddr = tw6->tw_v6_rcv_saddr.s6_addr32; |
| 582 | entry.daddr = tw6->tw_v6_daddr.s6_addr32; |
| 583 | } else |
| 584 | #endif |
| 585 | { |
| 586 | entry.saddr = &tw->tw_rcv_saddr; |
| 587 | entry.daddr = &tw->tw_daddr; |
| 588 | } |
| 589 | entry.sport = tw->tw_num; |
| 590 | entry.dport = ntohs(tw->tw_dport); |
YOSHIFUJI Hideaki | e905a9e | 2007-02-09 23:24:47 +0900 | [diff] [blame] | 591 | entry.userlocks = 0; |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 592 | |
Pavel Emelyanov | 87c22ea | 2011-12-09 06:21:34 +0000 | [diff] [blame] | 593 | if (!inet_diag_bc_run(bc, &entry)) |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 594 | return 0; |
| 595 | } |
| 596 | |
Pavel Emelyanov | a029fe2 | 2011-12-06 07:59:32 +0000 | [diff] [blame] | 597 | return inet_twsk_diag_fill(tw, skb, r, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 598 | NETLINK_CB(cb->skb).portid, |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 599 | cb->nlh->nlmsg_seq, NLM_F_MULTI, cb->nlh); |
| 600 | } |
| 601 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 602 | static int inet_diag_fill_req(struct sk_buff *skb, struct sock *sk, |
Eric W. Biederman | d06ca95 | 2012-05-24 17:58:08 -0600 | [diff] [blame] | 603 | struct request_sock *req, |
| 604 | struct user_namespace *user_ns, |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 605 | u32 portid, u32 seq, |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 606 | const struct nlmsghdr *unlh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | { |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 608 | const struct inet_request_sock *ireq = inet_rsk(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | struct inet_sock *inet = inet_sk(sk); |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 610 | struct inet_diag_msg *r; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | struct nlmsghdr *nlh; |
| 612 | long tmo; |
| 613 | |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 614 | nlh = nlmsg_put(skb, portid, seq, unlh->nlmsg_type, sizeof(*r), |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 615 | NLM_F_MULTI); |
| 616 | if (!nlh) |
| 617 | return -EMSGSIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 619 | r = nlmsg_data(nlh); |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 620 | r->idiag_family = sk->sk_family; |
| 621 | r->idiag_state = TCP_SYN_RECV; |
| 622 | r->idiag_timer = 1; |
Eric Dumazet | e6c022a | 2012-10-27 23:16:46 +0000 | [diff] [blame^] | 623 | r->idiag_retrans = req->num_retrans; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 625 | r->id.idiag_if = sk->sk_bound_dev_if; |
Pavel Emelyanov | f65c1b5 | 2011-12-15 02:43:44 +0000 | [diff] [blame] | 626 | sock_diag_save_cookie(req, r->id.idiag_cookie); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | |
| 628 | tmo = req->expires - jiffies; |
| 629 | if (tmo < 0) |
| 630 | tmo = 0; |
| 631 | |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 632 | r->id.idiag_sport = inet->inet_sport; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 633 | r->id.idiag_dport = ireq->rmt_port; |
| 634 | r->id.idiag_src[0] = ireq->loc_addr; |
| 635 | r->id.idiag_dst[0] = ireq->rmt_addr; |
| 636 | r->idiag_expires = jiffies_to_msecs(tmo); |
| 637 | r->idiag_rqueue = 0; |
| 638 | r->idiag_wqueue = 0; |
Eric W. Biederman | d06ca95 | 2012-05-24 17:58:08 -0600 | [diff] [blame] | 639 | r->idiag_uid = from_kuid_munged(user_ns, sock_i_uid(sk)); |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 640 | r->idiag_inode = 0; |
Eric Dumazet | dfd56b8 | 2011-12-10 09:48:31 +0000 | [diff] [blame] | 641 | #if IS_ENABLED(CONFIG_IPV6) |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 642 | if (r->idiag_family == AF_INET6) { |
Alexey Dobriyan | 4e3fd7a | 2011-11-21 03:39:03 +0000 | [diff] [blame] | 643 | *(struct in6_addr *)r->id.idiag_src = inet6_rsk(req)->loc_addr; |
| 644 | *(struct in6_addr *)r->id.idiag_dst = inet6_rsk(req)->rmt_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | } |
| 646 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | |
Thomas Graf | 6e277ed | 2012-06-26 23:36:12 +0000 | [diff] [blame] | 648 | return nlmsg_end(skb, nlh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | } |
| 650 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 651 | static int inet_diag_dump_reqs(struct sk_buff *skb, struct sock *sk, |
Pavel Emelyanov | 37f352b | 2011-12-06 07:57:26 +0000 | [diff] [blame] | 652 | struct netlink_callback *cb, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 653 | struct inet_diag_req_v2 *r, |
Pavel Emelyanov | 37f352b | 2011-12-06 07:57:26 +0000 | [diff] [blame] | 654 | const struct nlattr *bc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 656 | struct inet_diag_entry entry; |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 657 | struct inet_connection_sock *icsk = inet_csk(sk); |
Arnaldo Carvalho de Melo | 2ad69c5 | 2005-06-18 22:48:55 -0700 | [diff] [blame] | 658 | struct listen_sock *lopt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | struct inet_sock *inet = inet_sk(sk); |
| 660 | int j, s_j; |
| 661 | int reqnum, s_reqnum; |
| 662 | int err = 0; |
| 663 | |
| 664 | s_j = cb->args[3]; |
| 665 | s_reqnum = cb->args[4]; |
| 666 | |
| 667 | if (s_j > 0) |
| 668 | s_j--; |
| 669 | |
| 670 | entry.family = sk->sk_family; |
| 671 | |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 672 | read_lock_bh(&icsk->icsk_accept_queue.syn_wait_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 674 | lopt = icsk->icsk_accept_queue.listen_opt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | if (!lopt || !lopt->qlen) |
| 676 | goto out; |
| 677 | |
Pavel Emelyanov | 37f352b | 2011-12-06 07:57:26 +0000 | [diff] [blame] | 678 | if (bc != NULL) { |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 679 | entry.sport = inet->inet_num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | entry.userlocks = sk->sk_userlocks; |
| 681 | } |
| 682 | |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 683 | for (j = s_j; j < lopt->nr_table_entries; j++) { |
Arnaldo Carvalho de Melo | 60236fd | 2005-06-18 22:47:21 -0700 | [diff] [blame] | 684 | struct request_sock *req, *head = lopt->syn_table[j]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | |
| 686 | reqnum = 0; |
| 687 | for (req = head; req; reqnum++, req = req->dl_next) { |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 688 | struct inet_request_sock *ireq = inet_rsk(req); |
| 689 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | if (reqnum < s_reqnum) |
| 691 | continue; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 692 | if (r->id.idiag_dport != ireq->rmt_port && |
| 693 | r->id.idiag_dport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | continue; |
| 695 | |
| 696 | if (bc) { |
| 697 | entry.saddr = |
Eric Dumazet | dfd56b8 | 2011-12-10 09:48:31 +0000 | [diff] [blame] | 698 | #if IS_ENABLED(CONFIG_IPV6) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 699 | (entry.family == AF_INET6) ? |
Arnaldo Carvalho de Melo | ca304b6 | 2005-12-13 23:15:40 -0800 | [diff] [blame] | 700 | inet6_rsk(req)->loc_addr.s6_addr32 : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | #endif |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 702 | &ireq->loc_addr; |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 703 | entry.daddr = |
Eric Dumazet | dfd56b8 | 2011-12-10 09:48:31 +0000 | [diff] [blame] | 704 | #if IS_ENABLED(CONFIG_IPV6) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | (entry.family == AF_INET6) ? |
Arnaldo Carvalho de Melo | ca304b6 | 2005-12-13 23:15:40 -0800 | [diff] [blame] | 706 | inet6_rsk(req)->rmt_addr.s6_addr32 : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | #endif |
Arnaldo Carvalho de Melo | 2e6599c | 2005-06-18 22:46:52 -0700 | [diff] [blame] | 708 | &ireq->rmt_addr; |
| 709 | entry.dport = ntohs(ireq->rmt_port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | |
Pavel Emelyanov | 87c22ea | 2011-12-09 06:21:34 +0000 | [diff] [blame] | 711 | if (!inet_diag_bc_run(bc, &entry)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | continue; |
| 713 | } |
| 714 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 715 | err = inet_diag_fill_req(skb, sk, req, |
Eric W. Biederman | d06ca95 | 2012-05-24 17:58:08 -0600 | [diff] [blame] | 716 | sk_user_ns(NETLINK_CB(cb->skb).ssk), |
Eric W. Biederman | 15e4730 | 2012-09-07 20:12:54 +0000 | [diff] [blame] | 717 | NETLINK_CB(cb->skb).portid, |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 718 | cb->nlh->nlmsg_seq, cb->nlh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | if (err < 0) { |
| 720 | cb->args[3] = j + 1; |
| 721 | cb->args[4] = reqnum; |
| 722 | goto out; |
| 723 | } |
| 724 | } |
| 725 | |
| 726 | s_reqnum = 0; |
| 727 | } |
| 728 | |
| 729 | out: |
Arnaldo Carvalho de Melo | 463c84b | 2005-08-09 20:10:42 -0700 | [diff] [blame] | 730 | read_unlock_bh(&icsk->icsk_accept_queue.syn_wait_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | |
| 732 | return err; |
| 733 | } |
| 734 | |
Pavel Emelyanov | 1942c51 | 2011-12-09 06:23:18 +0000 | [diff] [blame] | 735 | void inet_diag_dump_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *skb, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 736 | struct netlink_callback *cb, struct inet_diag_req_v2 *r, struct nlattr *bc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | { |
| 738 | int i, num; |
| 739 | int s_i, s_num; |
Andrey Vagin | 51d7ccc | 2012-07-16 04:28:49 +0000 | [diff] [blame] | 740 | struct net *net = sock_net(skb->sk); |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 741 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | s_i = cb->args[1]; |
| 743 | s_num = num = cb->args[2]; |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 744 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | if (cb->args[0] == 0) { |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 746 | if (!(r->idiag_states & (TCPF_LISTEN | TCPF_SYN_RECV))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | goto skip_listen_ht; |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 748 | |
Arnaldo Carvalho de Melo | 0f7ff92 | 2005-08-09 19:59:44 -0700 | [diff] [blame] | 749 | for (i = s_i; i < INET_LHTABLE_SIZE; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | struct sock *sk; |
Eric Dumazet | c25eb3b | 2008-11-23 17:22:55 -0800 | [diff] [blame] | 751 | struct hlist_nulls_node *node; |
Eric Dumazet | 5caea4e | 2008-11-20 00:40:07 -0800 | [diff] [blame] | 752 | struct inet_listen_hashbucket *ilb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | |
| 754 | num = 0; |
Eric Dumazet | 5caea4e | 2008-11-20 00:40:07 -0800 | [diff] [blame] | 755 | ilb = &hashinfo->listening_hash[i]; |
| 756 | spin_lock_bh(&ilb->lock); |
Eric Dumazet | c25eb3b | 2008-11-23 17:22:55 -0800 | [diff] [blame] | 757 | sk_nulls_for_each(sk, node, &ilb->head) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | struct inet_sock *inet = inet_sk(sk); |
| 759 | |
Andrey Vagin | 51d7ccc | 2012-07-16 04:28:49 +0000 | [diff] [blame] | 760 | if (!net_eq(sock_net(sk), net)) |
| 761 | continue; |
| 762 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | if (num < s_num) { |
| 764 | num++; |
| 765 | continue; |
| 766 | } |
| 767 | |
Pavel Emelyanov | d23deaa | 2011-12-06 07:59:15 +0000 | [diff] [blame] | 768 | if (r->sdiag_family != AF_UNSPEC && |
| 769 | sk->sk_family != r->sdiag_family) |
| 770 | goto next_listen; |
| 771 | |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 772 | if (r->id.idiag_sport != inet->inet_sport && |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 773 | r->id.idiag_sport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | goto next_listen; |
| 775 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 776 | if (!(r->idiag_states & TCPF_LISTEN) || |
| 777 | r->id.idiag_dport || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | cb->args[3] > 0) |
| 779 | goto syn_recv; |
| 780 | |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 781 | if (inet_csk_diag_dump(sk, skb, cb, r, bc) < 0) { |
Eric Dumazet | 5caea4e | 2008-11-20 00:40:07 -0800 | [diff] [blame] | 782 | spin_unlock_bh(&ilb->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | goto done; |
| 784 | } |
| 785 | |
| 786 | syn_recv: |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 787 | if (!(r->idiag_states & TCPF_SYN_RECV)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | goto next_listen; |
| 789 | |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 790 | if (inet_diag_dump_reqs(skb, sk, cb, r, bc) < 0) { |
Eric Dumazet | 5caea4e | 2008-11-20 00:40:07 -0800 | [diff] [blame] | 791 | spin_unlock_bh(&ilb->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | goto done; |
| 793 | } |
| 794 | |
| 795 | next_listen: |
| 796 | cb->args[3] = 0; |
| 797 | cb->args[4] = 0; |
| 798 | ++num; |
| 799 | } |
Eric Dumazet | 5caea4e | 2008-11-20 00:40:07 -0800 | [diff] [blame] | 800 | spin_unlock_bh(&ilb->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | |
| 802 | s_num = 0; |
| 803 | cb->args[3] = 0; |
| 804 | cb->args[4] = 0; |
| 805 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | skip_listen_ht: |
| 807 | cb->args[0] = 1; |
| 808 | s_i = num = s_num = 0; |
| 809 | } |
| 810 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 811 | if (!(r->idiag_states & ~(TCPF_LISTEN | TCPF_SYN_RECV))) |
Pavel Emelyanov | efb3cb4 | 2011-12-09 06:22:26 +0000 | [diff] [blame] | 812 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | |
Eric Dumazet | f373b53 | 2009-10-09 00:16:19 +0000 | [diff] [blame] | 814 | for (i = s_i; i <= hashinfo->ehash_mask; i++) { |
Arnaldo Carvalho de Melo | 540722f | 2005-08-10 05:54:28 -0300 | [diff] [blame] | 815 | struct inet_ehash_bucket *head = &hashinfo->ehash[i]; |
David S. Miller | 7e3aab4 | 2008-11-21 16:39:19 -0800 | [diff] [blame] | 816 | spinlock_t *lock = inet_ehash_lockp(hashinfo, i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | struct sock *sk; |
Eric Dumazet | 3ab5aee | 2008-11-16 19:40:17 -0800 | [diff] [blame] | 818 | struct hlist_nulls_node *node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | |
Andi Kleen | 6be547a | 2008-08-28 01:09:54 -0700 | [diff] [blame] | 820 | num = 0; |
| 821 | |
Eric Dumazet | 3ab5aee | 2008-11-16 19:40:17 -0800 | [diff] [blame] | 822 | if (hlist_nulls_empty(&head->chain) && |
| 823 | hlist_nulls_empty(&head->twchain)) |
Andi Kleen | 6be547a | 2008-08-28 01:09:54 -0700 | [diff] [blame] | 824 | continue; |
| 825 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | if (i > s_i) |
| 827 | s_num = 0; |
| 828 | |
David S. Miller | 7e3aab4 | 2008-11-21 16:39:19 -0800 | [diff] [blame] | 829 | spin_lock_bh(lock); |
Eric Dumazet | 3ab5aee | 2008-11-16 19:40:17 -0800 | [diff] [blame] | 830 | sk_nulls_for_each(sk, node, &head->chain) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | struct inet_sock *inet = inet_sk(sk); |
| 832 | |
Andrey Vagin | 51d7ccc | 2012-07-16 04:28:49 +0000 | [diff] [blame] | 833 | if (!net_eq(sock_net(sk), net)) |
| 834 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | if (num < s_num) |
| 836 | goto next_normal; |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 837 | if (!(r->idiag_states & (1 << sk->sk_state))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | goto next_normal; |
Pavel Emelyanov | d23deaa | 2011-12-06 07:59:15 +0000 | [diff] [blame] | 839 | if (r->sdiag_family != AF_UNSPEC && |
| 840 | sk->sk_family != r->sdiag_family) |
| 841 | goto next_normal; |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 842 | if (r->id.idiag_sport != inet->inet_sport && |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 843 | r->id.idiag_sport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | goto next_normal; |
Eric Dumazet | c720c7e | 2009-10-15 06:30:45 +0000 | [diff] [blame] | 845 | if (r->id.idiag_dport != inet->inet_dport && |
Arnaldo Carvalho de Melo | 4e852c0 | 2006-01-09 14:56:19 -0800 | [diff] [blame] | 846 | r->id.idiag_dport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | goto next_normal; |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 848 | if (inet_csk_diag_dump(sk, skb, cb, r, bc) < 0) { |
David S. Miller | 7e3aab4 | 2008-11-21 16:39:19 -0800 | [diff] [blame] | 849 | spin_unlock_bh(lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | goto done; |
| 851 | } |
| 852 | next_normal: |
| 853 | ++num; |
| 854 | } |
| 855 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 856 | if (r->idiag_states & TCPF_TIME_WAIT) { |
Arnaldo Carvalho de Melo | c7d58aa | 2006-01-09 14:56:38 -0800 | [diff] [blame] | 857 | struct inet_timewait_sock *tw; |
| 858 | |
| 859 | inet_twsk_for_each(tw, node, |
Eric Dumazet | dbca9b275 | 2007-02-08 14:16:46 -0800 | [diff] [blame] | 860 | &head->twchain) { |
Andrey Vagin | 51d7ccc | 2012-07-16 04:28:49 +0000 | [diff] [blame] | 861 | if (!net_eq(twsk_net(tw), net)) |
| 862 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | |
| 864 | if (num < s_num) |
| 865 | goto next_dying; |
Pavel Emelyanov | d23deaa | 2011-12-06 07:59:15 +0000 | [diff] [blame] | 866 | if (r->sdiag_family != AF_UNSPEC && |
| 867 | tw->tw_family != r->sdiag_family) |
| 868 | goto next_dying; |
Arnaldo Carvalho de Melo | 7dbf075 | 2006-01-09 14:56:03 -0800 | [diff] [blame] | 869 | if (r->id.idiag_sport != tw->tw_sport && |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 870 | r->id.idiag_sport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | goto next_dying; |
Arnaldo Carvalho de Melo | 7dbf075 | 2006-01-09 14:56:03 -0800 | [diff] [blame] | 872 | if (r->id.idiag_dport != tw->tw_dport && |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 873 | r->id.idiag_dport) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | goto next_dying; |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 875 | if (inet_twsk_diag_dump(tw, skb, cb, r, bc) < 0) { |
David S. Miller | 7e3aab4 | 2008-11-21 16:39:19 -0800 | [diff] [blame] | 876 | spin_unlock_bh(lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | goto done; |
| 878 | } |
| 879 | next_dying: |
| 880 | ++num; |
| 881 | } |
| 882 | } |
David S. Miller | 7e3aab4 | 2008-11-21 16:39:19 -0800 | [diff] [blame] | 883 | spin_unlock_bh(lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 884 | } |
| 885 | |
| 886 | done: |
| 887 | cb->args[1] = i; |
| 888 | cb->args[2] = num; |
Pavel Emelyanov | efb3cb4 | 2011-12-09 06:22:26 +0000 | [diff] [blame] | 889 | out: |
| 890 | ; |
| 891 | } |
Pavel Emelyanov | 1942c51 | 2011-12-09 06:23:18 +0000 | [diff] [blame] | 892 | EXPORT_SYMBOL_GPL(inet_diag_dump_icsk); |
Pavel Emelyanov | efb3cb4 | 2011-12-09 06:22:26 +0000 | [diff] [blame] | 893 | |
| 894 | static int __inet_diag_dump(struct sk_buff *skb, struct netlink_callback *cb, |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 895 | struct inet_diag_req_v2 *r, struct nlattr *bc) |
Pavel Emelyanov | efb3cb4 | 2011-12-09 06:22:26 +0000 | [diff] [blame] | 896 | { |
| 897 | const struct inet_diag_handler *handler; |
| 898 | |
| 899 | handler = inet_diag_lock_handler(r->sdiag_protocol); |
| 900 | if (!IS_ERR(handler)) |
Pavel Emelyanov | 1942c51 | 2011-12-09 06:23:18 +0000 | [diff] [blame] | 901 | handler->dump(skb, cb, r, bc); |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 902 | inet_diag_unlock_handler(handler); |
Pavel Emelyanov | efb3cb4 | 2011-12-09 06:22:26 +0000 | [diff] [blame] | 903 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | return skb->len; |
| 905 | } |
| 906 | |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 907 | static int inet_diag_dump(struct sk_buff *skb, struct netlink_callback *cb) |
| 908 | { |
| 909 | struct nlattr *bc = NULL; |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 910 | int hdrlen = sizeof(struct inet_diag_req_v2); |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 911 | |
| 912 | if (nlmsg_attrlen(cb->nlh, hdrlen)) |
| 913 | bc = nlmsg_find_attr(cb->nlh, hdrlen, INET_DIAG_REQ_BYTECODE); |
| 914 | |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame] | 915 | return __inet_diag_dump(skb, cb, nlmsg_data(cb->nlh), bc); |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 916 | } |
| 917 | |
Pavel Emelyanov | a029fe2 | 2011-12-06 07:59:32 +0000 | [diff] [blame] | 918 | static inline int inet_diag_type2proto(int type) |
| 919 | { |
| 920 | switch (type) { |
| 921 | case TCPDIAG_GETSOCK: |
| 922 | return IPPROTO_TCP; |
| 923 | case DCCPDIAG_GETSOCK: |
| 924 | return IPPROTO_DCCP; |
| 925 | default: |
| 926 | return 0; |
| 927 | } |
| 928 | } |
| 929 | |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 930 | static int inet_diag_dump_compat(struct sk_buff *skb, struct netlink_callback *cb) |
| 931 | { |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame] | 932 | struct inet_diag_req *rc = nlmsg_data(cb->nlh); |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 933 | struct inet_diag_req_v2 req; |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 934 | struct nlattr *bc = NULL; |
Pavel Emelyanov | 3b09c84 | 2012-01-10 22:37:26 +0000 | [diff] [blame] | 935 | int hdrlen = sizeof(struct inet_diag_req); |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 936 | |
Pavel Emelyanov | d23deaa | 2011-12-06 07:59:15 +0000 | [diff] [blame] | 937 | req.sdiag_family = AF_UNSPEC; /* compatibility */ |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 938 | req.sdiag_protocol = inet_diag_type2proto(cb->nlh->nlmsg_type); |
| 939 | req.idiag_ext = rc->idiag_ext; |
| 940 | req.idiag_states = rc->idiag_states; |
| 941 | req.id = rc->id; |
| 942 | |
| 943 | if (nlmsg_attrlen(cb->nlh, hdrlen)) |
| 944 | bc = nlmsg_find_attr(cb->nlh, hdrlen, INET_DIAG_REQ_BYTECODE); |
| 945 | |
| 946 | return __inet_diag_dump(skb, cb, &req, bc); |
| 947 | } |
| 948 | |
Pavel Emelyanov | fe50ce2 | 2011-12-06 07:58:39 +0000 | [diff] [blame] | 949 | static int inet_diag_get_exact_compat(struct sk_buff *in_skb, |
| 950 | const struct nlmsghdr *nlh) |
| 951 | { |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame] | 952 | struct inet_diag_req *rc = nlmsg_data(nlh); |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 953 | struct inet_diag_req_v2 req; |
Pavel Emelyanov | fe50ce2 | 2011-12-06 07:58:39 +0000 | [diff] [blame] | 954 | |
| 955 | req.sdiag_family = rc->idiag_family; |
| 956 | req.sdiag_protocol = inet_diag_type2proto(nlh->nlmsg_type); |
| 957 | req.idiag_ext = rc->idiag_ext; |
| 958 | req.idiag_states = rc->idiag_states; |
| 959 | req.id = rc->id; |
| 960 | |
| 961 | return inet_diag_get_exact(in_skb, nlh, &req); |
| 962 | } |
| 963 | |
Pavel Emelyanov | 8d34172 | 2011-12-06 07:57:06 +0000 | [diff] [blame] | 964 | static int inet_diag_rcv_msg_compat(struct sk_buff *skb, struct nlmsghdr *nlh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | { |
Pavel Emelyanov | 3b09c84 | 2012-01-10 22:37:26 +0000 | [diff] [blame] | 966 | int hdrlen = sizeof(struct inet_diag_req); |
Andrey Vagin | 51d7ccc | 2012-07-16 04:28:49 +0000 | [diff] [blame] | 967 | struct net *net = sock_net(skb->sk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | |
Thomas Graf | ead592b | 2007-03-22 23:30:35 -0700 | [diff] [blame] | 969 | if (nlh->nlmsg_type >= INET_DIAG_GETSOCK_MAX || |
| 970 | nlmsg_len(nlh) < hdrlen) |
| 971 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | |
David S. Miller | b8f3ab4 | 2011-01-18 12:40:38 -0800 | [diff] [blame] | 973 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
Thomas Graf | ead592b | 2007-03-22 23:30:35 -0700 | [diff] [blame] | 974 | if (nlmsg_attrlen(nlh, hdrlen)) { |
| 975 | struct nlattr *attr; |
| 976 | |
| 977 | attr = nlmsg_find_attr(nlh, hdrlen, |
| 978 | INET_DIAG_REQ_BYTECODE); |
| 979 | if (attr == NULL || |
| 980 | nla_len(attr) < sizeof(struct inet_diag_bc_op) || |
| 981 | inet_diag_bc_audit(nla_data(attr), nla_len(attr))) |
| 982 | return -EINVAL; |
| 983 | } |
Pablo Neira Ayuso | 80d326f | 2012-02-24 14:30:15 +0000 | [diff] [blame] | 984 | { |
| 985 | struct netlink_dump_control c = { |
| 986 | .dump = inet_diag_dump_compat, |
| 987 | }; |
Andrey Vagin | 51d7ccc | 2012-07-16 04:28:49 +0000 | [diff] [blame] | 988 | return netlink_dump_start(net->diag_nlsk, skb, nlh, &c); |
Pablo Neira Ayuso | 80d326f | 2012-02-24 14:30:15 +0000 | [diff] [blame] | 989 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | } |
Thomas Graf | ead592b | 2007-03-22 23:30:35 -0700 | [diff] [blame] | 991 | |
Pavel Emelyanov | fe50ce2 | 2011-12-06 07:58:39 +0000 | [diff] [blame] | 992 | return inet_diag_get_exact_compat(skb, nlh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | } |
| 994 | |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 995 | static int inet_diag_handler_dump(struct sk_buff *skb, struct nlmsghdr *h) |
| 996 | { |
Pavel Emelyanov | c899136 | 2012-01-10 22:36:35 +0000 | [diff] [blame] | 997 | int hdrlen = sizeof(struct inet_diag_req_v2); |
Andrey Vagin | 51d7ccc | 2012-07-16 04:28:49 +0000 | [diff] [blame] | 998 | struct net *net = sock_net(skb->sk); |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 999 | |
| 1000 | if (nlmsg_len(h) < hdrlen) |
| 1001 | return -EINVAL; |
| 1002 | |
| 1003 | if (h->nlmsg_flags & NLM_F_DUMP) { |
Pavel Emelyanov | 25c4cd2 | 2011-12-06 07:58:58 +0000 | [diff] [blame] | 1004 | if (nlmsg_attrlen(h, hdrlen)) { |
| 1005 | struct nlattr *attr; |
| 1006 | attr = nlmsg_find_attr(h, hdrlen, |
| 1007 | INET_DIAG_REQ_BYTECODE); |
| 1008 | if (attr == NULL || |
| 1009 | nla_len(attr) < sizeof(struct inet_diag_bc_op) || |
| 1010 | inet_diag_bc_audit(nla_data(attr), nla_len(attr))) |
| 1011 | return -EINVAL; |
| 1012 | } |
Pablo Neira Ayuso | 80d326f | 2012-02-24 14:30:15 +0000 | [diff] [blame] | 1013 | { |
| 1014 | struct netlink_dump_control c = { |
| 1015 | .dump = inet_diag_dump, |
| 1016 | }; |
Andrey Vagin | 51d7ccc | 2012-07-16 04:28:49 +0000 | [diff] [blame] | 1017 | return netlink_dump_start(net->diag_nlsk, skb, h, &c); |
Pablo Neira Ayuso | 80d326f | 2012-02-24 14:30:15 +0000 | [diff] [blame] | 1018 | } |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 1019 | } |
| 1020 | |
David S. Miller | d106352 | 2012-06-26 21:28:54 -0700 | [diff] [blame] | 1021 | return inet_diag_get_exact(skb, h, nlmsg_data(h)); |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 1022 | } |
| 1023 | |
Shan Wei | 8dcf01f | 2012-04-24 18:21:07 +0000 | [diff] [blame] | 1024 | static const struct sock_diag_handler inet_diag_handler = { |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 1025 | .family = AF_INET, |
| 1026 | .dump = inet_diag_handler_dump, |
| 1027 | }; |
| 1028 | |
Shan Wei | 8dcf01f | 2012-04-24 18:21:07 +0000 | [diff] [blame] | 1029 | static const struct sock_diag_handler inet6_diag_handler = { |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 1030 | .family = AF_INET6, |
| 1031 | .dump = inet_diag_handler_dump, |
| 1032 | }; |
| 1033 | |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1034 | int inet_diag_register(const struct inet_diag_handler *h) |
| 1035 | { |
| 1036 | const __u16 type = h->idiag_type; |
| 1037 | int err = -EINVAL; |
| 1038 | |
Pavel Emelyanov | f13c95f | 2011-12-06 08:05:24 +0000 | [diff] [blame] | 1039 | if (type >= IPPROTO_MAX) |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1040 | goto out; |
| 1041 | |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 1042 | mutex_lock(&inet_diag_table_mutex); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1043 | err = -EEXIST; |
| 1044 | if (inet_diag_table[type] == NULL) { |
| 1045 | inet_diag_table[type] = h; |
| 1046 | err = 0; |
| 1047 | } |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 1048 | mutex_unlock(&inet_diag_table_mutex); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1049 | out: |
| 1050 | return err; |
| 1051 | } |
| 1052 | EXPORT_SYMBOL_GPL(inet_diag_register); |
| 1053 | |
| 1054 | void inet_diag_unregister(const struct inet_diag_handler *h) |
| 1055 | { |
| 1056 | const __u16 type = h->idiag_type; |
| 1057 | |
Pavel Emelyanov | f13c95f | 2011-12-06 08:05:24 +0000 | [diff] [blame] | 1058 | if (type >= IPPROTO_MAX) |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1059 | return; |
| 1060 | |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 1061 | mutex_lock(&inet_diag_table_mutex); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1062 | inet_diag_table[type] = NULL; |
Herbert Xu | d523a32 | 2007-12-03 15:51:25 +1100 | [diff] [blame] | 1063 | mutex_unlock(&inet_diag_table_mutex); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1064 | } |
| 1065 | EXPORT_SYMBOL_GPL(inet_diag_unregister); |
| 1066 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 1067 | static int __init inet_diag_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | { |
Pavel Emelyanov | f13c95f | 2011-12-06 08:05:24 +0000 | [diff] [blame] | 1069 | const int inet_diag_table_size = (IPPROTO_MAX * |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1070 | sizeof(struct inet_diag_handler *)); |
| 1071 | int err = -ENOMEM; |
| 1072 | |
Panagiotis Issaris | 0da974f | 2006-07-21 14:51:30 -0700 | [diff] [blame] | 1073 | inet_diag_table = kzalloc(inet_diag_table_size, GFP_KERNEL); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1074 | if (!inet_diag_table) |
| 1075 | goto out; |
| 1076 | |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 1077 | err = sock_diag_register(&inet_diag_handler); |
| 1078 | if (err) |
| 1079 | goto out_free_nl; |
| 1080 | |
| 1081 | err = sock_diag_register(&inet6_diag_handler); |
| 1082 | if (err) |
| 1083 | goto out_free_inet; |
| 1084 | |
Pavel Emelyanov | 8ef874b | 2011-12-06 07:59:52 +0000 | [diff] [blame] | 1085 | sock_diag_register_inet_compat(inet_diag_rcv_msg_compat); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1086 | out: |
| 1087 | return err; |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 1088 | |
| 1089 | out_free_inet: |
| 1090 | sock_diag_unregister(&inet_diag_handler); |
| 1091 | out_free_nl: |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1092 | kfree(inet_diag_table); |
| 1093 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | } |
| 1095 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 1096 | static void __exit inet_diag_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1097 | { |
Pavel Emelyanov | d366477 | 2011-12-06 07:58:03 +0000 | [diff] [blame] | 1098 | sock_diag_unregister(&inet6_diag_handler); |
| 1099 | sock_diag_unregister(&inet_diag_handler); |
Pavel Emelyanov | 8ef874b | 2011-12-06 07:59:52 +0000 | [diff] [blame] | 1100 | sock_diag_unregister_inet_compat(inet_diag_rcv_msg_compat); |
Arnaldo Carvalho de Melo | 4f5736c | 2005-08-12 09:27:49 -0300 | [diff] [blame] | 1101 | kfree(inet_diag_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1102 | } |
| 1103 | |
Arnaldo Carvalho de Melo | 73c1f4a | 2005-08-12 12:51:49 -0300 | [diff] [blame] | 1104 | module_init(inet_diag_init); |
| 1105 | module_exit(inet_diag_exit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | MODULE_LICENSE("GPL"); |
Pavel Emelyanov | aec8dc6 | 2011-12-15 02:43:27 +0000 | [diff] [blame] | 1107 | MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2 /* AF_INET */); |
| 1108 | MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 10 /* AF_INET6 */); |