Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
3 | * operating system. INET is implemented using the BSD Socket | |
4 | * interface as the means of communication with the user level. | |
5 | * | |
6 | * RAW - implementation of IP "raw" sockets. | |
7 | * | |
02c30a84 | 8 | * Authors: Ross Biro |
1da177e4 LT |
9 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
10 | * | |
11 | * Fixes: | |
12 | * Alan Cox : verify_area() fixed up | |
13 | * Alan Cox : ICMP error handling | |
14 | * Alan Cox : EMSGSIZE if you send too big a packet | |
15 | * Alan Cox : Now uses generic datagrams and shared | |
16 | * skbuff library. No more peek crashes, | |
17 | * no more backlogs | |
18 | * Alan Cox : Checks sk->broadcast. | |
19 | * Alan Cox : Uses skb_free_datagram/skb_copy_datagram | |
20 | * Alan Cox : Raw passes ip options too | |
21 | * Alan Cox : Setsocketopt added | |
22 | * Alan Cox : Fixed error return for broadcasts | |
23 | * Alan Cox : Removed wake_up calls | |
24 | * Alan Cox : Use ttl/tos | |
25 | * Alan Cox : Cleaned up old debugging | |
26 | * Alan Cox : Use new kernel side addresses | |
27 | * Arnt Gulbrandsen : Fixed MSG_DONTROUTE in raw sockets. | |
28 | * Alan Cox : BSD style RAW socket demultiplexing. | |
29 | * Alan Cox : Beginnings of mrouted support. | |
30 | * Alan Cox : Added IP_HDRINCL option. | |
31 | * Alan Cox : Skip broadcast check if BSDism set. | |
32 | * David S. Miller : New socket lookup architecture. | |
33 | * | |
34 | * This program is free software; you can redistribute it and/or | |
35 | * modify it under the terms of the GNU General Public License | |
36 | * as published by the Free Software Foundation; either version | |
37 | * 2 of the License, or (at your option) any later version. | |
38 | */ | |
bf0d5249 | 39 | |
715b49ef | 40 | #include <linux/types.h> |
60063497 | 41 | #include <linux/atomic.h> |
1da177e4 LT |
42 | #include <asm/byteorder.h> |
43 | #include <asm/current.h> | |
44 | #include <asm/uaccess.h> | |
45 | #include <asm/ioctls.h> | |
1da177e4 LT |
46 | #include <linux/stddef.h> |
47 | #include <linux/slab.h> | |
48 | #include <linux/errno.h> | |
49 | #include <linux/aio.h> | |
50 | #include <linux/kernel.h> | |
bc3b2d7f | 51 | #include <linux/export.h> |
1da177e4 LT |
52 | #include <linux/spinlock.h> |
53 | #include <linux/sockios.h> | |
54 | #include <linux/socket.h> | |
55 | #include <linux/in.h> | |
56 | #include <linux/mroute.h> | |
57 | #include <linux/netdevice.h> | |
58 | #include <linux/in_route.h> | |
59 | #include <linux/route.h> | |
1da177e4 | 60 | #include <linux/skbuff.h> |
f5220d63 | 61 | #include <linux/igmp.h> |
457c4cbc | 62 | #include <net/net_namespace.h> |
1da177e4 LT |
63 | #include <net/dst.h> |
64 | #include <net/sock.h> | |
1da177e4 LT |
65 | #include <linux/ip.h> |
66 | #include <linux/net.h> | |
67 | #include <net/ip.h> | |
68 | #include <net/icmp.h> | |
69 | #include <net/udp.h> | |
70 | #include <net/raw.h> | |
71 | #include <net/snmp.h> | |
c752f073 | 72 | #include <net/tcp_states.h> |
1da177e4 LT |
73 | #include <net/inet_common.h> |
74 | #include <net/checksum.h> | |
75 | #include <net/xfrm.h> | |
76 | #include <linux/rtnetlink.h> | |
77 | #include <linux/proc_fs.h> | |
78 | #include <linux/seq_file.h> | |
79 | #include <linux/netfilter.h> | |
80 | #include <linux/netfilter_ipv4.h> | |
709b46e8 | 81 | #include <linux/compat.h> |
1da177e4 | 82 | |
b673e4df | 83 | static struct raw_hashinfo raw_v4_hashinfo = { |
938b93ad | 84 | .lock = __RW_LOCK_UNLOCKED(raw_v4_hashinfo.lock), |
b673e4df | 85 | }; |
1da177e4 | 86 | |
fc8717ba | 87 | void raw_hash_sk(struct sock *sk) |
1da177e4 | 88 | { |
fc8717ba | 89 | struct raw_hashinfo *h = sk->sk_prot->h.raw_hash; |
65b4c50b | 90 | struct hlist_head *head; |
1da177e4 | 91 | |
c720c7e8 | 92 | head = &h->ht[inet_sk(sk)->inet_num & (RAW_HTABLE_SIZE - 1)]; |
65b4c50b PE |
93 | |
94 | write_lock_bh(&h->lock); | |
1da177e4 | 95 | sk_add_node(sk, head); |
c29a0bc4 | 96 | sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1); |
65b4c50b PE |
97 | write_unlock_bh(&h->lock); |
98 | } | |
99 | EXPORT_SYMBOL_GPL(raw_hash_sk); | |
100 | ||
fc8717ba | 101 | void raw_unhash_sk(struct sock *sk) |
ab70768e | 102 | { |
fc8717ba PE |
103 | struct raw_hashinfo *h = sk->sk_prot->h.raw_hash; |
104 | ||
ab70768e PE |
105 | write_lock_bh(&h->lock); |
106 | if (sk_del_node_init(sk)) | |
c29a0bc4 | 107 | sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1); |
ab70768e PE |
108 | write_unlock_bh(&h->lock); |
109 | } | |
110 | EXPORT_SYMBOL_GPL(raw_unhash_sk); | |
111 | ||
be185884 PE |
112 | static struct sock *__raw_v4_lookup(struct net *net, struct sock *sk, |
113 | unsigned short num, __be32 raddr, __be32 laddr, int dif) | |
1da177e4 | 114 | { |
b67bfe0d | 115 | sk_for_each_from(sk) { |
1da177e4 LT |
116 | struct inet_sock *inet = inet_sk(sk); |
117 | ||
c720c7e8 ED |
118 | if (net_eq(sock_net(sk), net) && inet->inet_num == num && |
119 | !(inet->inet_daddr && inet->inet_daddr != raddr) && | |
120 | !(inet->inet_rcv_saddr && inet->inet_rcv_saddr != laddr) && | |
1da177e4 LT |
121 | !(sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)) |
122 | goto found; /* gotcha */ | |
123 | } | |
124 | sk = NULL; | |
125 | found: | |
126 | return sk; | |
127 | } | |
128 | ||
129 | /* | |
130 | * 0 - deliver | |
131 | * 1 - block | |
132 | */ | |
ab43ed8b | 133 | static int icmp_filter(const struct sock *sk, const struct sk_buff *skb) |
1da177e4 | 134 | { |
ab43ed8b ED |
135 | struct icmphdr _hdr; |
136 | const struct icmphdr *hdr; | |
1da177e4 | 137 | |
ab43ed8b ED |
138 | hdr = skb_header_pointer(skb, skb_transport_offset(skb), |
139 | sizeof(_hdr), &_hdr); | |
140 | if (!hdr) | |
1da177e4 LT |
141 | return 1; |
142 | ||
ab43ed8b | 143 | if (hdr->type < 32) { |
1da177e4 LT |
144 | __u32 data = raw_sk(sk)->filter.data; |
145 | ||
ab43ed8b | 146 | return ((1U << hdr->type) & data) != 0; |
1da177e4 LT |
147 | } |
148 | ||
149 | /* Do not block unknown ICMP types */ | |
150 | return 0; | |
151 | } | |
152 | ||
153 | /* IP input processing comes here for RAW socket delivery. | |
154 | * Caller owns SKB, so we must make clones. | |
155 | * | |
156 | * RFC 1122: SHOULD pass TOS value up to the transport layer. | |
157 | * -> It does. And not only TOS, but all IP header. | |
158 | */ | |
b71d1d42 | 159 | static int raw_v4_input(struct sk_buff *skb, const struct iphdr *iph, int hash) |
1da177e4 LT |
160 | { |
161 | struct sock *sk; | |
162 | struct hlist_head *head; | |
d13964f4 | 163 | int delivered = 0; |
be185884 | 164 | struct net *net; |
1da177e4 | 165 | |
b673e4df PE |
166 | read_lock(&raw_v4_hashinfo.lock); |
167 | head = &raw_v4_hashinfo.ht[hash]; | |
1da177e4 LT |
168 | if (hlist_empty(head)) |
169 | goto out; | |
be185884 | 170 | |
c346dca1 | 171 | net = dev_net(skb->dev); |
be185884 | 172 | sk = __raw_v4_lookup(net, __sk_head(head), iph->protocol, |
1da177e4 LT |
173 | iph->saddr, iph->daddr, |
174 | skb->dev->ifindex); | |
175 | ||
176 | while (sk) { | |
d13964f4 | 177 | delivered = 1; |
f5220d63 QA |
178 | if ((iph->protocol != IPPROTO_ICMP || !icmp_filter(sk, skb)) && |
179 | ip_mc_sf_allow(sk, iph->daddr, iph->saddr, | |
180 | skb->dev->ifindex)) { | |
1da177e4 LT |
181 | struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC); |
182 | ||
183 | /* Not releasing hash table! */ | |
184 | if (clone) | |
185 | raw_rcv(sk, clone); | |
186 | } | |
be185884 | 187 | sk = __raw_v4_lookup(net, sk_next(sk), iph->protocol, |
1da177e4 LT |
188 | iph->saddr, iph->daddr, |
189 | skb->dev->ifindex); | |
190 | } | |
191 | out: | |
b673e4df | 192 | read_unlock(&raw_v4_hashinfo.lock); |
d13964f4 | 193 | return delivered; |
1da177e4 LT |
194 | } |
195 | ||
7bc54c90 PE |
196 | int raw_local_deliver(struct sk_buff *skb, int protocol) |
197 | { | |
198 | int hash; | |
199 | struct sock *raw_sk; | |
200 | ||
b673e4df PE |
201 | hash = protocol & (RAW_HTABLE_SIZE - 1); |
202 | raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]); | |
7bc54c90 PE |
203 | |
204 | /* If there maybe a raw socket we must check - if not we | |
205 | * don't care less | |
206 | */ | |
207 | if (raw_sk && !raw_v4_input(skb, ip_hdr(skb), hash)) | |
208 | raw_sk = NULL; | |
209 | ||
210 | return raw_sk != NULL; | |
211 | ||
212 | } | |
213 | ||
214 | static void raw_err(struct sock *sk, struct sk_buff *skb, u32 info) | |
1da177e4 LT |
215 | { |
216 | struct inet_sock *inet = inet_sk(sk); | |
88c7664f ACM |
217 | const int type = icmp_hdr(skb)->type; |
218 | const int code = icmp_hdr(skb)->code; | |
1da177e4 LT |
219 | int err = 0; |
220 | int harderr = 0; | |
221 | ||
36393395 DM |
222 | if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) |
223 | ipv4_sk_update_pmtu(skb, sk, info); | |
8d65b119 | 224 | else if (type == ICMP_REDIRECT) { |
55be7a9c | 225 | ipv4_sk_redirect(skb, sk); |
8d65b119 DJ |
226 | return; |
227 | } | |
36393395 | 228 | |
1da177e4 LT |
229 | /* Report error on raw socket, if: |
230 | 1. User requested ip_recverr. | |
231 | 2. Socket is connected (otherwise the error indication | |
232 | is useless without ip_recverr and error is hard. | |
233 | */ | |
234 | if (!inet->recverr && sk->sk_state != TCP_ESTABLISHED) | |
235 | return; | |
236 | ||
237 | switch (type) { | |
238 | default: | |
239 | case ICMP_TIME_EXCEEDED: | |
240 | err = EHOSTUNREACH; | |
241 | break; | |
242 | case ICMP_SOURCE_QUENCH: | |
243 | return; | |
244 | case ICMP_PARAMETERPROB: | |
245 | err = EPROTO; | |
246 | harderr = 1; | |
247 | break; | |
248 | case ICMP_DEST_UNREACH: | |
249 | err = EHOSTUNREACH; | |
250 | if (code > NR_ICMP_UNREACH) | |
251 | break; | |
252 | err = icmp_err_convert[code].errno; | |
253 | harderr = icmp_err_convert[code].fatal; | |
254 | if (code == ICMP_FRAG_NEEDED) { | |
255 | harderr = inet->pmtudisc != IP_PMTUDISC_DONT; | |
256 | err = EMSGSIZE; | |
257 | } | |
258 | } | |
259 | ||
260 | if (inet->recverr) { | |
b71d1d42 | 261 | const struct iphdr *iph = (const struct iphdr *)skb->data; |
1da177e4 LT |
262 | u8 *payload = skb->data + (iph->ihl << 2); |
263 | ||
264 | if (inet->hdrincl) | |
265 | payload = skb->data; | |
266 | ip_icmp_error(sk, skb, err, 0, info, payload); | |
267 | } | |
268 | ||
269 | if (inet->recverr || harderr) { | |
270 | sk->sk_err = err; | |
271 | sk->sk_error_report(sk); | |
272 | } | |
273 | } | |
274 | ||
7bc54c90 PE |
275 | void raw_icmp_error(struct sk_buff *skb, int protocol, u32 info) |
276 | { | |
277 | int hash; | |
278 | struct sock *raw_sk; | |
b71d1d42 | 279 | const struct iphdr *iph; |
be185884 | 280 | struct net *net; |
7bc54c90 | 281 | |
b673e4df | 282 | hash = protocol & (RAW_HTABLE_SIZE - 1); |
7bc54c90 | 283 | |
b673e4df PE |
284 | read_lock(&raw_v4_hashinfo.lock); |
285 | raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]); | |
7bc54c90 | 286 | if (raw_sk != NULL) { |
b71d1d42 | 287 | iph = (const struct iphdr *)skb->data; |
c346dca1 | 288 | net = dev_net(skb->dev); |
be185884 PE |
289 | |
290 | while ((raw_sk = __raw_v4_lookup(net, raw_sk, protocol, | |
291 | iph->daddr, iph->saddr, | |
7bc54c90 PE |
292 | skb->dev->ifindex)) != NULL) { |
293 | raw_err(raw_sk, skb, info); | |
294 | raw_sk = sk_next(raw_sk); | |
b71d1d42 | 295 | iph = (const struct iphdr *)skb->data; |
7bc54c90 PE |
296 | } |
297 | } | |
b673e4df | 298 | read_unlock(&raw_v4_hashinfo.lock); |
7bc54c90 PE |
299 | } |
300 | ||
5e73ea1a | 301 | static int raw_rcv_skb(struct sock *sk, struct sk_buff *skb) |
1da177e4 LT |
302 | { |
303 | /* Charge it to the socket. */ | |
e905a9ed | 304 | |
fbf8866d | 305 | ipv4_pktinfo_prepare(sk, skb); |
d826eb14 | 306 | if (sock_queue_rcv_skb(sk, skb) < 0) { |
1da177e4 LT |
307 | kfree_skb(skb); |
308 | return NET_RX_DROP; | |
309 | } | |
310 | ||
311 | return NET_RX_SUCCESS; | |
312 | } | |
313 | ||
314 | int raw_rcv(struct sock *sk, struct sk_buff *skb) | |
315 | { | |
316 | if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) { | |
33c732c3 | 317 | atomic_inc(&sk->sk_drops); |
1da177e4 LT |
318 | kfree_skb(skb); |
319 | return NET_RX_DROP; | |
320 | } | |
b59c2701 | 321 | nf_reset(skb); |
1da177e4 | 322 | |
d56f90a7 | 323 | skb_push(skb, skb->data - skb_network_header(skb)); |
1da177e4 LT |
324 | |
325 | raw_rcv_skb(sk, skb); | |
326 | return 0; | |
327 | } | |
328 | ||
77968b78 DM |
329 | static int raw_send_hdrinc(struct sock *sk, struct flowi4 *fl4, |
330 | void *from, size_t length, | |
331 | struct rtable **rtp, | |
332 | unsigned int flags) | |
1da177e4 LT |
333 | { |
334 | struct inet_sock *inet = inet_sk(sk); | |
0388b004 | 335 | struct net *net = sock_net(sk); |
1da177e4 LT |
336 | struct iphdr *iph; |
337 | struct sk_buff *skb; | |
f844c74f | 338 | unsigned int iphlen; |
1da177e4 | 339 | int err; |
1789a640 | 340 | struct rtable *rt = *rtp; |
66088243 | 341 | int hlen, tlen; |
1da177e4 | 342 | |
d8d1f30b | 343 | if (length > rt->dst.dev->mtu) { |
77968b78 | 344 | ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport, |
d8d1f30b | 345 | rt->dst.dev->mtu); |
1da177e4 LT |
346 | return -EMSGSIZE; |
347 | } | |
348 | if (flags&MSG_PROBE) | |
349 | goto out; | |
350 | ||
66088243 HX |
351 | hlen = LL_RESERVED_SPACE(rt->dst.dev); |
352 | tlen = rt->dst.dev->needed_tailroom; | |
f5184d26 | 353 | skb = sock_alloc_send_skb(sk, |
66088243 | 354 | length + hlen + tlen + 15, |
f5184d26 | 355 | flags & MSG_DONTWAIT, &err); |
1da177e4 | 356 | if (skb == NULL) |
e905a9ed | 357 | goto error; |
66088243 | 358 | skb_reserve(skb, hlen); |
1da177e4 LT |
359 | |
360 | skb->priority = sk->sk_priority; | |
4a19ec58 | 361 | skb->mark = sk->sk_mark; |
d8d1f30b | 362 | skb_dst_set(skb, &rt->dst); |
1789a640 | 363 | *rtp = NULL; |
1da177e4 | 364 | |
7e28ecc2 | 365 | skb_reset_network_header(skb); |
eddc9ec5 | 366 | iph = ip_hdr(skb); |
7e28ecc2 | 367 | skb_put(skb, length); |
1da177e4 LT |
368 | |
369 | skb->ip_summed = CHECKSUM_NONE; | |
370 | ||
11878b40 WB |
371 | sock_tx_timestamp(sk, &skb_shinfo(skb)->tx_flags); |
372 | ||
b0e380b1 | 373 | skb->transport_header = skb->network_header; |
55888dfb NH |
374 | err = -EFAULT; |
375 | if (memcpy_fromiovecend((void *)iph, from, 0, length)) | |
376 | goto error_free; | |
1da177e4 | 377 | |
f844c74f | 378 | iphlen = iph->ihl * 4; |
55888dfb NH |
379 | |
380 | /* | |
381 | * We don't want to modify the ip header, but we do need to | |
382 | * be sure that it won't cause problems later along the network | |
383 | * stack. Specifically we want to make sure that iph->ihl is a | |
384 | * sane value. If ihl points beyond the length of the buffer passed | |
385 | * in, reject the frame as invalid | |
386 | */ | |
387 | err = -EINVAL; | |
388 | if (iphlen > length) | |
389 | goto error_free; | |
390 | ||
391 | if (iphlen >= sizeof(*iph)) { | |
1da177e4 | 392 | if (!iph->saddr) |
77968b78 | 393 | iph->saddr = fl4->saddr; |
1da177e4 LT |
394 | iph->check = 0; |
395 | iph->tot_len = htons(length); | |
396 | if (!iph->id) | |
73f156a6 | 397 | ip_select_ident(skb, NULL); |
1da177e4 LT |
398 | |
399 | iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); | |
400 | } | |
96793b48 | 401 | if (iph->protocol == IPPROTO_ICMP) |
0388b004 | 402 | icmp_out_count(net, ((struct icmphdr *) |
96793b48 | 403 | skb_transport_header(skb))->type); |
1da177e4 | 404 | |
9bbc768a | 405 | err = NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_OUT, skb, NULL, |
d8d1f30b | 406 | rt->dst.dev, dst_output); |
1da177e4 | 407 | if (err > 0) |
6ce9e7b5 | 408 | err = net_xmit_errno(err); |
1da177e4 LT |
409 | if (err) |
410 | goto error; | |
411 | out: | |
412 | return 0; | |
413 | ||
55888dfb | 414 | error_free: |
1da177e4 LT |
415 | kfree_skb(skb); |
416 | error: | |
5e38e270 | 417 | IP_INC_STATS(net, IPSTATS_MIB_OUTDISCARDS); |
6ce9e7b5 ED |
418 | if (err == -ENOBUFS && !inet->recverr) |
419 | err = 0; | |
e905a9ed | 420 | return err; |
1da177e4 LT |
421 | } |
422 | ||
9d6ec938 | 423 | static int raw_probe_proto_opt(struct flowi4 *fl4, struct msghdr *msg) |
1da177e4 LT |
424 | { |
425 | struct iovec *iov; | |
426 | u8 __user *type = NULL; | |
427 | u8 __user *code = NULL; | |
428 | int probed = 0; | |
93765d8a | 429 | unsigned int i; |
1da177e4 LT |
430 | |
431 | if (!msg->msg_iov) | |
a27b58fe | 432 | return 0; |
1da177e4 LT |
433 | |
434 | for (i = 0; i < msg->msg_iovlen; i++) { | |
435 | iov = &msg->msg_iov[i]; | |
436 | if (!iov) | |
437 | continue; | |
438 | ||
9d6ec938 | 439 | switch (fl4->flowi4_proto) { |
1da177e4 LT |
440 | case IPPROTO_ICMP: |
441 | /* check if one-byte field is readable or not. */ | |
442 | if (iov->iov_base && iov->iov_len < 1) | |
443 | break; | |
444 | ||
445 | if (!type) { | |
446 | type = iov->iov_base; | |
447 | /* check if code field is readable or not. */ | |
448 | if (iov->iov_len > 1) | |
449 | code = type + 1; | |
450 | } else if (!code) | |
451 | code = iov->iov_base; | |
452 | ||
453 | if (type && code) { | |
9cce96df DM |
454 | if (get_user(fl4->fl4_icmp_type, type) || |
455 | get_user(fl4->fl4_icmp_code, code)) | |
a27b58fe | 456 | return -EFAULT; |
1da177e4 LT |
457 | probed = 1; |
458 | } | |
459 | break; | |
460 | default: | |
461 | probed = 1; | |
462 | break; | |
463 | } | |
464 | if (probed) | |
465 | break; | |
466 | } | |
a27b58fe | 467 | return 0; |
1da177e4 LT |
468 | } |
469 | ||
470 | static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, | |
471 | size_t len) | |
472 | { | |
473 | struct inet_sock *inet = inet_sk(sk); | |
474 | struct ipcm_cookie ipc; | |
475 | struct rtable *rt = NULL; | |
77968b78 | 476 | struct flowi4 fl4; |
1da177e4 | 477 | int free = 0; |
3ca3c68e | 478 | __be32 daddr; |
c1d18f9f | 479 | __be32 saddr; |
1da177e4 LT |
480 | u8 tos; |
481 | int err; | |
f6d8bd05 | 482 | struct ip_options_data opt_copy; |
1da177e4 LT |
483 | |
484 | err = -EMSGSIZE; | |
926d4b81 | 485 | if (len > 0xFFFF) |
1da177e4 LT |
486 | goto out; |
487 | ||
488 | /* | |
489 | * Check the flags. | |
490 | */ | |
491 | ||
492 | err = -EOPNOTSUPP; | |
493 | if (msg->msg_flags & MSG_OOB) /* Mirror BSD error message */ | |
494 | goto out; /* compatibility */ | |
e905a9ed | 495 | |
1da177e4 | 496 | /* |
e905a9ed | 497 | * Get and verify the address. |
1da177e4 LT |
498 | */ |
499 | ||
500 | if (msg->msg_namelen) { | |
342dfc30 | 501 | DECLARE_SOCKADDR(struct sockaddr_in *, usin, msg->msg_name); |
1da177e4 LT |
502 | err = -EINVAL; |
503 | if (msg->msg_namelen < sizeof(*usin)) | |
504 | goto out; | |
505 | if (usin->sin_family != AF_INET) { | |
058bd4d2 JP |
506 | pr_info_once("%s: %s forgot to set AF_INET. Fix it!\n", |
507 | __func__, current->comm); | |
1da177e4 LT |
508 | err = -EAFNOSUPPORT; |
509 | if (usin->sin_family) | |
510 | goto out; | |
511 | } | |
512 | daddr = usin->sin_addr.s_addr; | |
513 | /* ANK: I did not forget to get protocol from port field. | |
514 | * I just do not know, who uses this weirdness. | |
515 | * IP_HDRINCL is much more convenient. | |
516 | */ | |
517 | } else { | |
518 | err = -EDESTADDRREQ; | |
e905a9ed | 519 | if (sk->sk_state != TCP_ESTABLISHED) |
1da177e4 | 520 | goto out; |
c720c7e8 | 521 | daddr = inet->inet_daddr; |
1da177e4 LT |
522 | } |
523 | ||
c720c7e8 | 524 | ipc.addr = inet->inet_saddr; |
1da177e4 | 525 | ipc.opt = NULL; |
2244d07b | 526 | ipc.tx_flags = 0; |
aa661581 FF |
527 | ipc.ttl = 0; |
528 | ipc.tos = -1; | |
1da177e4 LT |
529 | ipc.oif = sk->sk_bound_dev_if; |
530 | ||
531 | if (msg->msg_controllen) { | |
c8e6ad08 | 532 | err = ip_cmsg_send(sock_net(sk), msg, &ipc, false); |
1da177e4 LT |
533 | if (err) |
534 | goto out; | |
535 | if (ipc.opt) | |
536 | free = 1; | |
537 | } | |
538 | ||
539 | saddr = ipc.addr; | |
540 | ipc.addr = daddr; | |
541 | ||
f6d8bd05 ED |
542 | if (!ipc.opt) { |
543 | struct ip_options_rcu *inet_opt; | |
544 | ||
545 | rcu_read_lock(); | |
546 | inet_opt = rcu_dereference(inet->inet_opt); | |
547 | if (inet_opt) { | |
548 | memcpy(&opt_copy, inet_opt, | |
549 | sizeof(*inet_opt) + inet_opt->opt.optlen); | |
550 | ipc.opt = &opt_copy.opt; | |
551 | } | |
552 | rcu_read_unlock(); | |
553 | } | |
1da177e4 LT |
554 | |
555 | if (ipc.opt) { | |
556 | err = -EINVAL; | |
557 | /* Linux does not mangle headers on raw sockets, | |
558 | * so that IP options + IP_HDRINCL is non-sense. | |
559 | */ | |
560 | if (inet->hdrincl) | |
561 | goto done; | |
f6d8bd05 | 562 | if (ipc.opt->opt.srr) { |
1da177e4 LT |
563 | if (!daddr) |
564 | goto done; | |
f6d8bd05 | 565 | daddr = ipc.opt->opt.faddr; |
1da177e4 LT |
566 | } |
567 | } | |
aa661581 | 568 | tos = get_rtconn_flags(&ipc, sk); |
1da177e4 LT |
569 | if (msg->msg_flags & MSG_DONTROUTE) |
570 | tos |= RTO_ONLINK; | |
571 | ||
f97c1e0c | 572 | if (ipv4_is_multicast(daddr)) { |
1da177e4 LT |
573 | if (!ipc.oif) |
574 | ipc.oif = inet->mc_index; | |
575 | if (!saddr) | |
576 | saddr = inet->mc_addr; | |
76e21053 EH |
577 | } else if (!ipc.oif) |
578 | ipc.oif = inet->uc_index; | |
1da177e4 | 579 | |
77968b78 DM |
580 | flowi4_init_output(&fl4, ipc.oif, sk->sk_mark, tos, |
581 | RT_SCOPE_UNIVERSE, | |
582 | inet->hdrincl ? IPPROTO_RAW : sk->sk_protocol, | |
0e0d44ab | 583 | inet_sk_flowi_flags(sk) | |
c27c9322 | 584 | (inet->hdrincl ? FLOWI_FLAG_KNOWN_NH : 0), |
47670b76 | 585 | daddr, saddr, 0, 0); |
ef164ae3 | 586 | |
77968b78 DM |
587 | if (!inet->hdrincl) { |
588 | err = raw_probe_proto_opt(&fl4, msg); | |
589 | if (err) | |
b23dd4fe | 590 | goto done; |
77968b78 DM |
591 | } |
592 | ||
593 | security_sk_classify_flow(sk, flowi4_to_flowi(&fl4)); | |
594 | rt = ip_route_output_flow(sock_net(sk), &fl4, sk); | |
595 | if (IS_ERR(rt)) { | |
596 | err = PTR_ERR(rt); | |
597 | rt = NULL; | |
598 | goto done; | |
1da177e4 | 599 | } |
1da177e4 LT |
600 | |
601 | err = -EACCES; | |
602 | if (rt->rt_flags & RTCF_BROADCAST && !sock_flag(sk, SOCK_BROADCAST)) | |
603 | goto done; | |
604 | ||
605 | if (msg->msg_flags & MSG_CONFIRM) | |
606 | goto do_confirm; | |
607 | back_from_confirm: | |
608 | ||
609 | if (inet->hdrincl) | |
77968b78 DM |
610 | err = raw_send_hdrinc(sk, &fl4, msg->msg_iov, len, |
611 | &rt, msg->msg_flags); | |
e905a9ed | 612 | |
1da177e4 | 613 | else { |
11878b40 WB |
614 | sock_tx_timestamp(sk, &ipc.tx_flags); |
615 | ||
1da177e4 | 616 | if (!ipc.addr) |
77968b78 | 617 | ipc.addr = fl4.daddr; |
1da177e4 | 618 | lock_sock(sk); |
f5fca608 | 619 | err = ip_append_data(sk, &fl4, ip_generic_getfrag, |
77968b78 DM |
620 | msg->msg_iov, len, 0, |
621 | &ipc, &rt, msg->msg_flags); | |
1da177e4 LT |
622 | if (err) |
623 | ip_flush_pending_frames(sk); | |
6ce9e7b5 | 624 | else if (!(msg->msg_flags & MSG_MORE)) { |
77968b78 | 625 | err = ip_push_pending_frames(sk, &fl4); |
6ce9e7b5 ED |
626 | if (err == -ENOBUFS && !inet->recverr) |
627 | err = 0; | |
628 | } | |
1da177e4 LT |
629 | release_sock(sk); |
630 | } | |
631 | done: | |
632 | if (free) | |
633 | kfree(ipc.opt); | |
634 | ip_rt_put(rt); | |
635 | ||
5418c692 JJ |
636 | out: |
637 | if (err < 0) | |
638 | return err; | |
639 | return len; | |
1da177e4 LT |
640 | |
641 | do_confirm: | |
d8d1f30b | 642 | dst_confirm(&rt->dst); |
1da177e4 LT |
643 | if (!(msg->msg_flags & MSG_PROBE) || len) |
644 | goto back_from_confirm; | |
645 | err = 0; | |
646 | goto done; | |
647 | } | |
648 | ||
649 | static void raw_close(struct sock *sk, long timeout) | |
650 | { | |
e905a9ed | 651 | /* |
25985edc | 652 | * Raw sockets may have direct kernel references. Kill them. |
1da177e4 LT |
653 | */ |
654 | ip_ra_control(sk, 0, NULL); | |
655 | ||
656 | sk_common_release(sk); | |
657 | } | |
658 | ||
7d06b2e0 | 659 | static void raw_destroy(struct sock *sk) |
22dd4850 DL |
660 | { |
661 | lock_sock(sk); | |
662 | ip_flush_pending_frames(sk); | |
663 | release_sock(sk); | |
22dd4850 DL |
664 | } |
665 | ||
1da177e4 LT |
666 | /* This gets rid of all the nasties in af_inet. -DaveM */ |
667 | static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) | |
668 | { | |
669 | struct inet_sock *inet = inet_sk(sk); | |
670 | struct sockaddr_in *addr = (struct sockaddr_in *) uaddr; | |
671 | int ret = -EINVAL; | |
672 | int chk_addr_ret; | |
673 | ||
674 | if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_in)) | |
675 | goto out; | |
3b1e0a65 | 676 | chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr); |
1da177e4 LT |
677 | ret = -EADDRNOTAVAIL; |
678 | if (addr->sin_addr.s_addr && chk_addr_ret != RTN_LOCAL && | |
679 | chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST) | |
680 | goto out; | |
c720c7e8 | 681 | inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr; |
1da177e4 | 682 | if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST) |
c720c7e8 | 683 | inet->inet_saddr = 0; /* Use device */ |
1da177e4 LT |
684 | sk_dst_reset(sk); |
685 | ret = 0; | |
686 | out: return ret; | |
687 | } | |
688 | ||
689 | /* | |
690 | * This should be easy, if there is something there | |
691 | * we return it, otherwise we block. | |
692 | */ | |
693 | ||
694 | static int raw_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, | |
695 | size_t len, int noblock, int flags, int *addr_len) | |
696 | { | |
697 | struct inet_sock *inet = inet_sk(sk); | |
698 | size_t copied = 0; | |
699 | int err = -EOPNOTSUPP; | |
342dfc30 | 700 | DECLARE_SOCKADDR(struct sockaddr_in *, sin, msg->msg_name); |
1da177e4 LT |
701 | struct sk_buff *skb; |
702 | ||
703 | if (flags & MSG_OOB) | |
704 | goto out; | |
705 | ||
1da177e4 | 706 | if (flags & MSG_ERRQUEUE) { |
85fbaa75 | 707 | err = ip_recv_error(sk, msg, len, addr_len); |
1da177e4 LT |
708 | goto out; |
709 | } | |
710 | ||
711 | skb = skb_recv_datagram(sk, flags, noblock, &err); | |
712 | if (!skb) | |
713 | goto out; | |
714 | ||
715 | copied = skb->len; | |
716 | if (len < copied) { | |
717 | msg->msg_flags |= MSG_TRUNC; | |
718 | copied = len; | |
719 | } | |
720 | ||
721 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); | |
722 | if (err) | |
723 | goto done; | |
724 | ||
3b885787 | 725 | sock_recv_ts_and_drops(msg, sk, skb); |
1da177e4 LT |
726 | |
727 | /* Copy the address. */ | |
728 | if (sin) { | |
729 | sin->sin_family = AF_INET; | |
eddc9ec5 | 730 | sin->sin_addr.s_addr = ip_hdr(skb)->saddr; |
f59fc7f3 | 731 | sin->sin_port = 0; |
1da177e4 | 732 | memset(&sin->sin_zero, 0, sizeof(sin->sin_zero)); |
bceaa902 | 733 | *addr_len = sizeof(*sin); |
1da177e4 LT |
734 | } |
735 | if (inet->cmsg_flags) | |
736 | ip_cmsg_recv(msg, skb); | |
737 | if (flags & MSG_TRUNC) | |
738 | copied = skb->len; | |
739 | done: | |
740 | skb_free_datagram(sk, skb); | |
5418c692 JJ |
741 | out: |
742 | if (err) | |
743 | return err; | |
744 | return copied; | |
1da177e4 LT |
745 | } |
746 | ||
747 | static int raw_init(struct sock *sk) | |
748 | { | |
749 | struct raw_sock *rp = raw_sk(sk); | |
750 | ||
c720c7e8 | 751 | if (inet_sk(sk)->inet_num == IPPROTO_ICMP) |
1da177e4 LT |
752 | memset(&rp->filter, 0, sizeof(rp->filter)); |
753 | return 0; | |
754 | } | |
755 | ||
756 | static int raw_seticmpfilter(struct sock *sk, char __user *optval, int optlen) | |
757 | { | |
758 | if (optlen > sizeof(struct icmp_filter)) | |
759 | optlen = sizeof(struct icmp_filter); | |
760 | if (copy_from_user(&raw_sk(sk)->filter, optval, optlen)) | |
761 | return -EFAULT; | |
762 | return 0; | |
763 | } | |
764 | ||
765 | static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *optlen) | |
766 | { | |
767 | int len, ret = -EFAULT; | |
768 | ||
769 | if (get_user(len, optlen)) | |
770 | goto out; | |
771 | ret = -EINVAL; | |
772 | if (len < 0) | |
773 | goto out; | |
774 | if (len > sizeof(struct icmp_filter)) | |
775 | len = sizeof(struct icmp_filter); | |
776 | ret = -EFAULT; | |
777 | if (put_user(len, optlen) || | |
778 | copy_to_user(optval, &raw_sk(sk)->filter, len)) | |
779 | goto out; | |
780 | ret = 0; | |
781 | out: return ret; | |
782 | } | |
783 | ||
3fdadf7d | 784 | static int do_raw_setsockopt(struct sock *sk, int level, int optname, |
b7058842 | 785 | char __user *optval, unsigned int optlen) |
1da177e4 | 786 | { |
1da177e4 | 787 | if (optname == ICMP_FILTER) { |
c720c7e8 | 788 | if (inet_sk(sk)->inet_num != IPPROTO_ICMP) |
1da177e4 LT |
789 | return -EOPNOTSUPP; |
790 | else | |
791 | return raw_seticmpfilter(sk, optval, optlen); | |
792 | } | |
793 | return -ENOPROTOOPT; | |
794 | } | |
795 | ||
3fdadf7d | 796 | static int raw_setsockopt(struct sock *sk, int level, int optname, |
b7058842 | 797 | char __user *optval, unsigned int optlen) |
1da177e4 LT |
798 | { |
799 | if (level != SOL_RAW) | |
3fdadf7d DM |
800 | return ip_setsockopt(sk, level, optname, optval, optlen); |
801 | return do_raw_setsockopt(sk, level, optname, optval, optlen); | |
802 | } | |
1da177e4 | 803 | |
3fdadf7d DM |
804 | #ifdef CONFIG_COMPAT |
805 | static int compat_raw_setsockopt(struct sock *sk, int level, int optname, | |
b7058842 | 806 | char __user *optval, unsigned int optlen) |
3fdadf7d DM |
807 | { |
808 | if (level != SOL_RAW) | |
543d9cfe | 809 | return compat_ip_setsockopt(sk, level, optname, optval, optlen); |
3fdadf7d DM |
810 | return do_raw_setsockopt(sk, level, optname, optval, optlen); |
811 | } | |
812 | #endif | |
813 | ||
814 | static int do_raw_getsockopt(struct sock *sk, int level, int optname, | |
815 | char __user *optval, int __user *optlen) | |
816 | { | |
1da177e4 | 817 | if (optname == ICMP_FILTER) { |
c720c7e8 | 818 | if (inet_sk(sk)->inet_num != IPPROTO_ICMP) |
1da177e4 LT |
819 | return -EOPNOTSUPP; |
820 | else | |
821 | return raw_geticmpfilter(sk, optval, optlen); | |
822 | } | |
823 | return -ENOPROTOOPT; | |
824 | } | |
825 | ||
3fdadf7d DM |
826 | static int raw_getsockopt(struct sock *sk, int level, int optname, |
827 | char __user *optval, int __user *optlen) | |
828 | { | |
829 | if (level != SOL_RAW) | |
830 | return ip_getsockopt(sk, level, optname, optval, optlen); | |
831 | return do_raw_getsockopt(sk, level, optname, optval, optlen); | |
832 | } | |
833 | ||
834 | #ifdef CONFIG_COMPAT | |
835 | static int compat_raw_getsockopt(struct sock *sk, int level, int optname, | |
543d9cfe | 836 | char __user *optval, int __user *optlen) |
3fdadf7d DM |
837 | { |
838 | if (level != SOL_RAW) | |
543d9cfe | 839 | return compat_ip_getsockopt(sk, level, optname, optval, optlen); |
3fdadf7d DM |
840 | return do_raw_getsockopt(sk, level, optname, optval, optlen); |
841 | } | |
842 | #endif | |
843 | ||
1da177e4 LT |
844 | static int raw_ioctl(struct sock *sk, int cmd, unsigned long arg) |
845 | { | |
846 | switch (cmd) { | |
4500ebf8 JP |
847 | case SIOCOUTQ: { |
848 | int amount = sk_wmem_alloc_get(sk); | |
31e6d363 | 849 | |
4500ebf8 JP |
850 | return put_user(amount, (int __user *)arg); |
851 | } | |
852 | case SIOCINQ: { | |
853 | struct sk_buff *skb; | |
854 | int amount = 0; | |
855 | ||
856 | spin_lock_bh(&sk->sk_receive_queue.lock); | |
857 | skb = skb_peek(&sk->sk_receive_queue); | |
858 | if (skb != NULL) | |
859 | amount = skb->len; | |
860 | spin_unlock_bh(&sk->sk_receive_queue.lock); | |
861 | return put_user(amount, (int __user *)arg); | |
862 | } | |
1da177e4 | 863 | |
4500ebf8 | 864 | default: |
1da177e4 | 865 | #ifdef CONFIG_IP_MROUTE |
4500ebf8 | 866 | return ipmr_ioctl(sk, cmd, (void __user *)arg); |
1da177e4 | 867 | #else |
4500ebf8 | 868 | return -ENOIOCTLCMD; |
1da177e4 LT |
869 | #endif |
870 | } | |
871 | } | |
872 | ||
709b46e8 EB |
873 | #ifdef CONFIG_COMPAT |
874 | static int compat_raw_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg) | |
875 | { | |
876 | switch (cmd) { | |
877 | case SIOCOUTQ: | |
878 | case SIOCINQ: | |
879 | return -ENOIOCTLCMD; | |
880 | default: | |
881 | #ifdef CONFIG_IP_MROUTE | |
882 | return ipmr_compat_ioctl(sk, cmd, compat_ptr(arg)); | |
883 | #else | |
884 | return -ENOIOCTLCMD; | |
885 | #endif | |
886 | } | |
887 | } | |
888 | #endif | |
889 | ||
1da177e4 | 890 | struct proto raw_prot = { |
543d9cfe ACM |
891 | .name = "RAW", |
892 | .owner = THIS_MODULE, | |
893 | .close = raw_close, | |
22dd4850 | 894 | .destroy = raw_destroy, |
543d9cfe ACM |
895 | .connect = ip4_datagram_connect, |
896 | .disconnect = udp_disconnect, | |
897 | .ioctl = raw_ioctl, | |
898 | .init = raw_init, | |
899 | .setsockopt = raw_setsockopt, | |
900 | .getsockopt = raw_getsockopt, | |
901 | .sendmsg = raw_sendmsg, | |
902 | .recvmsg = raw_recvmsg, | |
903 | .bind = raw_bind, | |
904 | .backlog_rcv = raw_rcv_skb, | |
8141ed9f | 905 | .release_cb = ip4_datagram_release_cb, |
fc8717ba PE |
906 | .hash = raw_hash_sk, |
907 | .unhash = raw_unhash_sk, | |
543d9cfe | 908 | .obj_size = sizeof(struct raw_sock), |
fc8717ba | 909 | .h.raw_hash = &raw_v4_hashinfo, |
3fdadf7d | 910 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
911 | .compat_setsockopt = compat_raw_setsockopt, |
912 | .compat_getsockopt = compat_raw_getsockopt, | |
709b46e8 | 913 | .compat_ioctl = compat_raw_ioctl, |
3fdadf7d | 914 | #endif |
1da177e4 LT |
915 | }; |
916 | ||
917 | #ifdef CONFIG_PROC_FS | |
1da177e4 LT |
918 | static struct sock *raw_get_first(struct seq_file *seq) |
919 | { | |
920 | struct sock *sk; | |
5a5f3a8d | 921 | struct raw_iter_state *state = raw_seq_private(seq); |
1da177e4 | 922 | |
b673e4df PE |
923 | for (state->bucket = 0; state->bucket < RAW_HTABLE_SIZE; |
924 | ++state->bucket) { | |
b67bfe0d | 925 | sk_for_each(sk, &state->h->ht[state->bucket]) |
1218854a | 926 | if (sock_net(sk) == seq_file_net(seq)) |
1da177e4 LT |
927 | goto found; |
928 | } | |
929 | sk = NULL; | |
930 | found: | |
931 | return sk; | |
932 | } | |
933 | ||
934 | static struct sock *raw_get_next(struct seq_file *seq, struct sock *sk) | |
935 | { | |
5a5f3a8d | 936 | struct raw_iter_state *state = raw_seq_private(seq); |
1da177e4 LT |
937 | |
938 | do { | |
939 | sk = sk_next(sk); | |
940 | try_again: | |
941 | ; | |
1218854a | 942 | } while (sk && sock_net(sk) != seq_file_net(seq)); |
1da177e4 | 943 | |
b673e4df | 944 | if (!sk && ++state->bucket < RAW_HTABLE_SIZE) { |
42a73808 | 945 | sk = sk_head(&state->h->ht[state->bucket]); |
1da177e4 LT |
946 | goto try_again; |
947 | } | |
948 | return sk; | |
949 | } | |
950 | ||
951 | static struct sock *raw_get_idx(struct seq_file *seq, loff_t pos) | |
952 | { | |
953 | struct sock *sk = raw_get_first(seq); | |
954 | ||
955 | if (sk) | |
956 | while (pos && (sk = raw_get_next(seq, sk)) != NULL) | |
957 | --pos; | |
958 | return pos ? NULL : sk; | |
959 | } | |
960 | ||
42a73808 | 961 | void *raw_seq_start(struct seq_file *seq, loff_t *pos) |
1da177e4 | 962 | { |
42a73808 PE |
963 | struct raw_iter_state *state = raw_seq_private(seq); |
964 | ||
965 | read_lock(&state->h->lock); | |
1da177e4 LT |
966 | return *pos ? raw_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; |
967 | } | |
42a73808 | 968 | EXPORT_SYMBOL_GPL(raw_seq_start); |
1da177e4 | 969 | |
42a73808 | 970 | void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
1da177e4 LT |
971 | { |
972 | struct sock *sk; | |
973 | ||
974 | if (v == SEQ_START_TOKEN) | |
975 | sk = raw_get_first(seq); | |
976 | else | |
977 | sk = raw_get_next(seq, v); | |
978 | ++*pos; | |
979 | return sk; | |
980 | } | |
42a73808 | 981 | EXPORT_SYMBOL_GPL(raw_seq_next); |
1da177e4 | 982 | |
42a73808 | 983 | void raw_seq_stop(struct seq_file *seq, void *v) |
1da177e4 | 984 | { |
42a73808 PE |
985 | struct raw_iter_state *state = raw_seq_private(seq); |
986 | ||
987 | read_unlock(&state->h->lock); | |
1da177e4 | 988 | } |
42a73808 | 989 | EXPORT_SYMBOL_GPL(raw_seq_stop); |
1da177e4 | 990 | |
8cd850ef | 991 | static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i) |
1da177e4 LT |
992 | { |
993 | struct inet_sock *inet = inet_sk(sp); | |
c720c7e8 ED |
994 | __be32 dest = inet->inet_daddr, |
995 | src = inet->inet_rcv_saddr; | |
1da177e4 | 996 | __u16 destp = 0, |
c720c7e8 | 997 | srcp = inet->inet_num; |
1da177e4 | 998 | |
8cd850ef | 999 | seq_printf(seq, "%4d: %08X:%04X %08X:%04X" |
d14c5ab6 | 1000 | " %02X %08X:%08X %02X:%08lX %08X %5u %8d %lu %d %pK %d\n", |
e905a9ed | 1001 | i, src, srcp, dest, destp, sp->sk_state, |
31e6d363 ED |
1002 | sk_wmem_alloc_get(sp), |
1003 | sk_rmem_alloc_get(sp), | |
a7cb5a49 EB |
1004 | 0, 0L, 0, |
1005 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)), | |
1006 | 0, sock_i_ino(sp), | |
33c732c3 | 1007 | atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops)); |
1da177e4 LT |
1008 | } |
1009 | ||
1010 | static int raw_seq_show(struct seq_file *seq, void *v) | |
1011 | { | |
1da177e4 | 1012 | if (v == SEQ_START_TOKEN) |
8cd850ef DL |
1013 | seq_printf(seq, " sl local_address rem_address st tx_queue " |
1014 | "rx_queue tr tm->when retrnsmt uid timeout " | |
cb61cb9b | 1015 | "inode ref pointer drops\n"); |
8cd850ef DL |
1016 | else |
1017 | raw_sock_seq_show(seq, v, raw_seq_private(seq)->bucket); | |
1da177e4 LT |
1018 | return 0; |
1019 | } | |
1020 | ||
f690808e | 1021 | static const struct seq_operations raw_seq_ops = { |
1da177e4 LT |
1022 | .start = raw_seq_start, |
1023 | .next = raw_seq_next, | |
1024 | .stop = raw_seq_stop, | |
1025 | .show = raw_seq_show, | |
1026 | }; | |
1027 | ||
3046d767 DL |
1028 | int raw_seq_open(struct inode *ino, struct file *file, |
1029 | struct raw_hashinfo *h, const struct seq_operations *ops) | |
1da177e4 | 1030 | { |
f51d599f | 1031 | int err; |
42a73808 PE |
1032 | struct raw_iter_state *i; |
1033 | ||
3046d767 | 1034 | err = seq_open_net(ino, file, ops, sizeof(struct raw_iter_state)); |
f51d599f PE |
1035 | if (err < 0) |
1036 | return err; | |
42a73808 | 1037 | |
f51d599f | 1038 | i = raw_seq_private((struct seq_file *)file->private_data); |
42a73808 | 1039 | i->h = h; |
42a73808 PE |
1040 | return 0; |
1041 | } | |
1042 | EXPORT_SYMBOL_GPL(raw_seq_open); | |
1043 | ||
1044 | static int raw_v4_seq_open(struct inode *inode, struct file *file) | |
1045 | { | |
3046d767 | 1046 | return raw_seq_open(inode, file, &raw_v4_hashinfo, &raw_seq_ops); |
1da177e4 LT |
1047 | } |
1048 | ||
9a32144e | 1049 | static const struct file_operations raw_seq_fops = { |
1da177e4 | 1050 | .owner = THIS_MODULE, |
42a73808 | 1051 | .open = raw_v4_seq_open, |
1da177e4 LT |
1052 | .read = seq_read, |
1053 | .llseek = seq_lseek, | |
f51d599f | 1054 | .release = seq_release_net, |
1da177e4 LT |
1055 | }; |
1056 | ||
a308da16 | 1057 | static __net_init int raw_init_net(struct net *net) |
1da177e4 | 1058 | { |
d4beaa66 | 1059 | if (!proc_create("raw", S_IRUGO, net->proc_net, &raw_seq_fops)) |
1da177e4 | 1060 | return -ENOMEM; |
a308da16 | 1061 | |
1da177e4 LT |
1062 | return 0; |
1063 | } | |
1064 | ||
a308da16 PE |
1065 | static __net_exit void raw_exit_net(struct net *net) |
1066 | { | |
ece31ffd | 1067 | remove_proc_entry("raw", net->proc_net); |
a308da16 PE |
1068 | } |
1069 | ||
1070 | static __net_initdata struct pernet_operations raw_net_ops = { | |
1071 | .init = raw_init_net, | |
1072 | .exit = raw_exit_net, | |
1073 | }; | |
1074 | ||
1075 | int __init raw_proc_init(void) | |
1076 | { | |
1077 | return register_pernet_subsys(&raw_net_ops); | |
1078 | } | |
1079 | ||
1da177e4 LT |
1080 | void __init raw_proc_exit(void) |
1081 | { | |
a308da16 | 1082 | unregister_pernet_subsys(&raw_net_ops); |
1da177e4 LT |
1083 | } |
1084 | #endif /* CONFIG_PROC_FS */ |