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Commit | Line | Data |
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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> | |
1da177e4 | 49 | #include <linux/kernel.h> |
bc3b2d7f | 50 | #include <linux/export.h> |
1da177e4 LT |
51 | #include <linux/spinlock.h> |
52 | #include <linux/sockios.h> | |
53 | #include <linux/socket.h> | |
54 | #include <linux/in.h> | |
55 | #include <linux/mroute.h> | |
56 | #include <linux/netdevice.h> | |
57 | #include <linux/in_route.h> | |
58 | #include <linux/route.h> | |
1da177e4 | 59 | #include <linux/skbuff.h> |
f5220d63 | 60 | #include <linux/igmp.h> |
457c4cbc | 61 | #include <net/net_namespace.h> |
1da177e4 LT |
62 | #include <net/dst.h> |
63 | #include <net/sock.h> | |
1da177e4 LT |
64 | #include <linux/ip.h> |
65 | #include <linux/net.h> | |
66 | #include <net/ip.h> | |
67 | #include <net/icmp.h> | |
68 | #include <net/udp.h> | |
69 | #include <net/raw.h> | |
70 | #include <net/snmp.h> | |
c752f073 | 71 | #include <net/tcp_states.h> |
1da177e4 LT |
72 | #include <net/inet_common.h> |
73 | #include <net/checksum.h> | |
74 | #include <net/xfrm.h> | |
75 | #include <linux/rtnetlink.h> | |
76 | #include <linux/proc_fs.h> | |
77 | #include <linux/seq_file.h> | |
78 | #include <linux/netfilter.h> | |
79 | #include <linux/netfilter_ipv4.h> | |
709b46e8 | 80 | #include <linux/compat.h> |
c008ba5b HX |
81 | #include <linux/uio.h> |
82 | ||
83 | struct raw_frag_vec { | |
b61e9dcc | 84 | struct msghdr *msg; |
c008ba5b HX |
85 | union { |
86 | struct icmphdr icmph; | |
87 | char c[1]; | |
88 | } hdr; | |
89 | int hlen; | |
90 | }; | |
1da177e4 | 91 | |
b673e4df | 92 | static struct raw_hashinfo raw_v4_hashinfo = { |
938b93ad | 93 | .lock = __RW_LOCK_UNLOCKED(raw_v4_hashinfo.lock), |
b673e4df | 94 | }; |
1da177e4 | 95 | |
086c653f | 96 | int raw_hash_sk(struct sock *sk) |
1da177e4 | 97 | { |
fc8717ba | 98 | struct raw_hashinfo *h = sk->sk_prot->h.raw_hash; |
65b4c50b | 99 | struct hlist_head *head; |
1da177e4 | 100 | |
c720c7e8 | 101 | head = &h->ht[inet_sk(sk)->inet_num & (RAW_HTABLE_SIZE - 1)]; |
65b4c50b PE |
102 | |
103 | write_lock_bh(&h->lock); | |
1da177e4 | 104 | sk_add_node(sk, head); |
c29a0bc4 | 105 | sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1); |
65b4c50b | 106 | write_unlock_bh(&h->lock); |
086c653f CG |
107 | |
108 | return 0; | |
65b4c50b PE |
109 | } |
110 | EXPORT_SYMBOL_GPL(raw_hash_sk); | |
111 | ||
fc8717ba | 112 | void raw_unhash_sk(struct sock *sk) |
ab70768e | 113 | { |
fc8717ba PE |
114 | struct raw_hashinfo *h = sk->sk_prot->h.raw_hash; |
115 | ||
ab70768e PE |
116 | write_lock_bh(&h->lock); |
117 | if (sk_del_node_init(sk)) | |
c29a0bc4 | 118 | sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1); |
ab70768e PE |
119 | write_unlock_bh(&h->lock); |
120 | } | |
121 | EXPORT_SYMBOL_GPL(raw_unhash_sk); | |
122 | ||
be185884 PE |
123 | static struct sock *__raw_v4_lookup(struct net *net, struct sock *sk, |
124 | unsigned short num, __be32 raddr, __be32 laddr, int dif) | |
1da177e4 | 125 | { |
b67bfe0d | 126 | sk_for_each_from(sk) { |
1da177e4 LT |
127 | struct inet_sock *inet = inet_sk(sk); |
128 | ||
c720c7e8 ED |
129 | if (net_eq(sock_net(sk), net) && inet->inet_num == num && |
130 | !(inet->inet_daddr && inet->inet_daddr != raddr) && | |
131 | !(inet->inet_rcv_saddr && inet->inet_rcv_saddr != laddr) && | |
1da177e4 LT |
132 | !(sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)) |
133 | goto found; /* gotcha */ | |
134 | } | |
135 | sk = NULL; | |
136 | found: | |
137 | return sk; | |
138 | } | |
139 | ||
140 | /* | |
141 | * 0 - deliver | |
142 | * 1 - block | |
143 | */ | |
ab43ed8b | 144 | static int icmp_filter(const struct sock *sk, const struct sk_buff *skb) |
1da177e4 | 145 | { |
ab43ed8b ED |
146 | struct icmphdr _hdr; |
147 | const struct icmphdr *hdr; | |
1da177e4 | 148 | |
ab43ed8b ED |
149 | hdr = skb_header_pointer(skb, skb_transport_offset(skb), |
150 | sizeof(_hdr), &_hdr); | |
151 | if (!hdr) | |
1da177e4 LT |
152 | return 1; |
153 | ||
ab43ed8b | 154 | if (hdr->type < 32) { |
1da177e4 LT |
155 | __u32 data = raw_sk(sk)->filter.data; |
156 | ||
ab43ed8b | 157 | return ((1U << hdr->type) & data) != 0; |
1da177e4 LT |
158 | } |
159 | ||
160 | /* Do not block unknown ICMP types */ | |
161 | return 0; | |
162 | } | |
163 | ||
164 | /* IP input processing comes here for RAW socket delivery. | |
165 | * Caller owns SKB, so we must make clones. | |
166 | * | |
167 | * RFC 1122: SHOULD pass TOS value up to the transport layer. | |
168 | * -> It does. And not only TOS, but all IP header. | |
169 | */ | |
b71d1d42 | 170 | static int raw_v4_input(struct sk_buff *skb, const struct iphdr *iph, int hash) |
1da177e4 LT |
171 | { |
172 | struct sock *sk; | |
173 | struct hlist_head *head; | |
d13964f4 | 174 | int delivered = 0; |
be185884 | 175 | struct net *net; |
1da177e4 | 176 | |
b673e4df PE |
177 | read_lock(&raw_v4_hashinfo.lock); |
178 | head = &raw_v4_hashinfo.ht[hash]; | |
1da177e4 LT |
179 | if (hlist_empty(head)) |
180 | goto out; | |
be185884 | 181 | |
c346dca1 | 182 | net = dev_net(skb->dev); |
be185884 | 183 | sk = __raw_v4_lookup(net, __sk_head(head), iph->protocol, |
1da177e4 LT |
184 | iph->saddr, iph->daddr, |
185 | skb->dev->ifindex); | |
186 | ||
187 | while (sk) { | |
d13964f4 | 188 | delivered = 1; |
f5220d63 QA |
189 | if ((iph->protocol != IPPROTO_ICMP || !icmp_filter(sk, skb)) && |
190 | ip_mc_sf_allow(sk, iph->daddr, iph->saddr, | |
191 | skb->dev->ifindex)) { | |
1da177e4 LT |
192 | struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC); |
193 | ||
194 | /* Not releasing hash table! */ | |
195 | if (clone) | |
196 | raw_rcv(sk, clone); | |
197 | } | |
be185884 | 198 | sk = __raw_v4_lookup(net, sk_next(sk), iph->protocol, |
1da177e4 LT |
199 | iph->saddr, iph->daddr, |
200 | skb->dev->ifindex); | |
201 | } | |
202 | out: | |
b673e4df | 203 | read_unlock(&raw_v4_hashinfo.lock); |
d13964f4 | 204 | return delivered; |
1da177e4 LT |
205 | } |
206 | ||
7bc54c90 PE |
207 | int raw_local_deliver(struct sk_buff *skb, int protocol) |
208 | { | |
209 | int hash; | |
210 | struct sock *raw_sk; | |
211 | ||
b673e4df PE |
212 | hash = protocol & (RAW_HTABLE_SIZE - 1); |
213 | raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]); | |
7bc54c90 PE |
214 | |
215 | /* If there maybe a raw socket we must check - if not we | |
216 | * don't care less | |
217 | */ | |
218 | if (raw_sk && !raw_v4_input(skb, ip_hdr(skb), hash)) | |
219 | raw_sk = NULL; | |
220 | ||
221 | return raw_sk != NULL; | |
222 | ||
223 | } | |
224 | ||
225 | static void raw_err(struct sock *sk, struct sk_buff *skb, u32 info) | |
1da177e4 LT |
226 | { |
227 | struct inet_sock *inet = inet_sk(sk); | |
88c7664f ACM |
228 | const int type = icmp_hdr(skb)->type; |
229 | const int code = icmp_hdr(skb)->code; | |
1da177e4 LT |
230 | int err = 0; |
231 | int harderr = 0; | |
232 | ||
36393395 DM |
233 | if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) |
234 | ipv4_sk_update_pmtu(skb, sk, info); | |
8d65b119 | 235 | else if (type == ICMP_REDIRECT) { |
55be7a9c | 236 | ipv4_sk_redirect(skb, sk); |
8d65b119 DJ |
237 | return; |
238 | } | |
36393395 | 239 | |
1da177e4 LT |
240 | /* Report error on raw socket, if: |
241 | 1. User requested ip_recverr. | |
242 | 2. Socket is connected (otherwise the error indication | |
243 | is useless without ip_recverr and error is hard. | |
244 | */ | |
245 | if (!inet->recverr && sk->sk_state != TCP_ESTABLISHED) | |
246 | return; | |
247 | ||
248 | switch (type) { | |
249 | default: | |
250 | case ICMP_TIME_EXCEEDED: | |
251 | err = EHOSTUNREACH; | |
252 | break; | |
253 | case ICMP_SOURCE_QUENCH: | |
254 | return; | |
255 | case ICMP_PARAMETERPROB: | |
256 | err = EPROTO; | |
257 | harderr = 1; | |
258 | break; | |
259 | case ICMP_DEST_UNREACH: | |
260 | err = EHOSTUNREACH; | |
261 | if (code > NR_ICMP_UNREACH) | |
262 | break; | |
263 | err = icmp_err_convert[code].errno; | |
264 | harderr = icmp_err_convert[code].fatal; | |
265 | if (code == ICMP_FRAG_NEEDED) { | |
266 | harderr = inet->pmtudisc != IP_PMTUDISC_DONT; | |
267 | err = EMSGSIZE; | |
268 | } | |
269 | } | |
270 | ||
271 | if (inet->recverr) { | |
b71d1d42 | 272 | const struct iphdr *iph = (const struct iphdr *)skb->data; |
1da177e4 LT |
273 | u8 *payload = skb->data + (iph->ihl << 2); |
274 | ||
275 | if (inet->hdrincl) | |
276 | payload = skb->data; | |
277 | ip_icmp_error(sk, skb, err, 0, info, payload); | |
278 | } | |
279 | ||
280 | if (inet->recverr || harderr) { | |
281 | sk->sk_err = err; | |
282 | sk->sk_error_report(sk); | |
283 | } | |
284 | } | |
285 | ||
7bc54c90 PE |
286 | void raw_icmp_error(struct sk_buff *skb, int protocol, u32 info) |
287 | { | |
288 | int hash; | |
289 | struct sock *raw_sk; | |
b71d1d42 | 290 | const struct iphdr *iph; |
be185884 | 291 | struct net *net; |
7bc54c90 | 292 | |
b673e4df | 293 | hash = protocol & (RAW_HTABLE_SIZE - 1); |
7bc54c90 | 294 | |
b673e4df PE |
295 | read_lock(&raw_v4_hashinfo.lock); |
296 | raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]); | |
00db4124 | 297 | if (raw_sk) { |
b71d1d42 | 298 | iph = (const struct iphdr *)skb->data; |
c346dca1 | 299 | net = dev_net(skb->dev); |
be185884 PE |
300 | |
301 | while ((raw_sk = __raw_v4_lookup(net, raw_sk, protocol, | |
302 | iph->daddr, iph->saddr, | |
7bc54c90 PE |
303 | skb->dev->ifindex)) != NULL) { |
304 | raw_err(raw_sk, skb, info); | |
305 | raw_sk = sk_next(raw_sk); | |
b71d1d42 | 306 | iph = (const struct iphdr *)skb->data; |
7bc54c90 PE |
307 | } |
308 | } | |
b673e4df | 309 | read_unlock(&raw_v4_hashinfo.lock); |
7bc54c90 PE |
310 | } |
311 | ||
5e73ea1a | 312 | static int raw_rcv_skb(struct sock *sk, struct sk_buff *skb) |
1da177e4 LT |
313 | { |
314 | /* Charge it to the socket. */ | |
e905a9ed | 315 | |
fbf8866d | 316 | ipv4_pktinfo_prepare(sk, skb); |
d826eb14 | 317 | if (sock_queue_rcv_skb(sk, skb) < 0) { |
1da177e4 LT |
318 | kfree_skb(skb); |
319 | return NET_RX_DROP; | |
320 | } | |
321 | ||
322 | return NET_RX_SUCCESS; | |
323 | } | |
324 | ||
325 | int raw_rcv(struct sock *sk, struct sk_buff *skb) | |
326 | { | |
327 | if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) { | |
33c732c3 | 328 | atomic_inc(&sk->sk_drops); |
1da177e4 LT |
329 | kfree_skb(skb); |
330 | return NET_RX_DROP; | |
331 | } | |
b59c2701 | 332 | nf_reset(skb); |
1da177e4 | 333 | |
d56f90a7 | 334 | skb_push(skb, skb->data - skb_network_header(skb)); |
1da177e4 LT |
335 | |
336 | raw_rcv_skb(sk, skb); | |
337 | return 0; | |
338 | } | |
339 | ||
77968b78 | 340 | static int raw_send_hdrinc(struct sock *sk, struct flowi4 *fl4, |
7ae9abfd | 341 | struct msghdr *msg, size_t length, |
c14ac945 SHY |
342 | struct rtable **rtp, unsigned int flags, |
343 | const struct sockcm_cookie *sockc) | |
1da177e4 LT |
344 | { |
345 | struct inet_sock *inet = inet_sk(sk); | |
0388b004 | 346 | struct net *net = sock_net(sk); |
1da177e4 LT |
347 | struct iphdr *iph; |
348 | struct sk_buff *skb; | |
f844c74f | 349 | unsigned int iphlen; |
1da177e4 | 350 | int err; |
1789a640 | 351 | struct rtable *rt = *rtp; |
66088243 | 352 | int hlen, tlen; |
1da177e4 | 353 | |
d8d1f30b | 354 | if (length > rt->dst.dev->mtu) { |
77968b78 | 355 | ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport, |
d8d1f30b | 356 | rt->dst.dev->mtu); |
1da177e4 LT |
357 | return -EMSGSIZE; |
358 | } | |
359 | if (flags&MSG_PROBE) | |
360 | goto out; | |
361 | ||
66088243 HX |
362 | hlen = LL_RESERVED_SPACE(rt->dst.dev); |
363 | tlen = rt->dst.dev->needed_tailroom; | |
f5184d26 | 364 | skb = sock_alloc_send_skb(sk, |
66088243 | 365 | length + hlen + tlen + 15, |
f5184d26 | 366 | flags & MSG_DONTWAIT, &err); |
51456b29 | 367 | if (!skb) |
e905a9ed | 368 | goto error; |
66088243 | 369 | skb_reserve(skb, hlen); |
1da177e4 LT |
370 | |
371 | skb->priority = sk->sk_priority; | |
4a19ec58 | 372 | skb->mark = sk->sk_mark; |
d8d1f30b | 373 | skb_dst_set(skb, &rt->dst); |
1789a640 | 374 | *rtp = NULL; |
1da177e4 | 375 | |
7e28ecc2 | 376 | skb_reset_network_header(skb); |
eddc9ec5 | 377 | iph = ip_hdr(skb); |
7e28ecc2 | 378 | skb_put(skb, length); |
1da177e4 LT |
379 | |
380 | skb->ip_summed = CHECKSUM_NONE; | |
381 | ||
c14ac945 | 382 | sock_tx_timestamp(sk, sockc->tsflags, &skb_shinfo(skb)->tx_flags); |
11878b40 | 383 | |
b0e380b1 | 384 | skb->transport_header = skb->network_header; |
55888dfb | 385 | err = -EFAULT; |
21226abb | 386 | if (memcpy_from_msg(iph, msg, length)) |
55888dfb | 387 | goto error_free; |
1da177e4 | 388 | |
f844c74f | 389 | iphlen = iph->ihl * 4; |
55888dfb NH |
390 | |
391 | /* | |
392 | * We don't want to modify the ip header, but we do need to | |
393 | * be sure that it won't cause problems later along the network | |
394 | * stack. Specifically we want to make sure that iph->ihl is a | |
395 | * sane value. If ihl points beyond the length of the buffer passed | |
396 | * in, reject the frame as invalid | |
397 | */ | |
398 | err = -EINVAL; | |
399 | if (iphlen > length) | |
400 | goto error_free; | |
401 | ||
402 | if (iphlen >= sizeof(*iph)) { | |
1da177e4 | 403 | if (!iph->saddr) |
77968b78 | 404 | iph->saddr = fl4->saddr; |
1da177e4 LT |
405 | iph->check = 0; |
406 | iph->tot_len = htons(length); | |
407 | if (!iph->id) | |
b6a7719a | 408 | ip_select_ident(net, skb, NULL); |
1da177e4 LT |
409 | |
410 | iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); | |
027ac58e BCC |
411 | skb->transport_header += iphlen; |
412 | if (iph->protocol == IPPROTO_ICMP && | |
413 | length >= iphlen + sizeof(struct icmphdr)) | |
414 | icmp_out_count(net, ((struct icmphdr *) | |
415 | skb_transport_header(skb))->type); | |
1da177e4 LT |
416 | } |
417 | ||
29a26a56 EB |
418 | err = NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_OUT, |
419 | net, sk, skb, NULL, rt->dst.dev, | |
13206b6b | 420 | dst_output); |
1da177e4 | 421 | if (err > 0) |
6ce9e7b5 | 422 | err = net_xmit_errno(err); |
1da177e4 LT |
423 | if (err) |
424 | goto error; | |
425 | out: | |
426 | return 0; | |
427 | ||
55888dfb | 428 | error_free: |
1da177e4 LT |
429 | kfree_skb(skb); |
430 | error: | |
5e38e270 | 431 | IP_INC_STATS(net, IPSTATS_MIB_OUTDISCARDS); |
6ce9e7b5 ED |
432 | if (err == -ENOBUFS && !inet->recverr) |
433 | err = 0; | |
e905a9ed | 434 | return err; |
1da177e4 LT |
435 | } |
436 | ||
c008ba5b | 437 | static int raw_probe_proto_opt(struct raw_frag_vec *rfv, struct flowi4 *fl4) |
1da177e4 | 438 | { |
32b5913a | 439 | int err; |
1da177e4 | 440 | |
32b5913a | 441 | if (fl4->flowi4_proto != IPPROTO_ICMP) |
a27b58fe | 442 | return 0; |
1da177e4 | 443 | |
32b5913a | 444 | /* We only need the first two bytes. */ |
c008ba5b HX |
445 | rfv->hlen = 2; |
446 | ||
b61e9dcc | 447 | err = memcpy_from_msg(rfv->hdr.c, rfv->msg, rfv->hlen); |
32b5913a HX |
448 | if (err) |
449 | return err; | |
450 | ||
c008ba5b HX |
451 | fl4->fl4_icmp_type = rfv->hdr.icmph.type; |
452 | fl4->fl4_icmp_code = rfv->hdr.icmph.code; | |
32b5913a | 453 | |
a27b58fe | 454 | return 0; |
1da177e4 LT |
455 | } |
456 | ||
c008ba5b HX |
457 | static int raw_getfrag(void *from, char *to, int offset, int len, int odd, |
458 | struct sk_buff *skb) | |
459 | { | |
460 | struct raw_frag_vec *rfv = from; | |
461 | ||
462 | if (offset < rfv->hlen) { | |
463 | int copy = min(rfv->hlen - offset, len); | |
464 | ||
465 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
466 | memcpy(to, rfv->hdr.c + offset, copy); | |
467 | else | |
468 | skb->csum = csum_block_add( | |
469 | skb->csum, | |
470 | csum_partial_copy_nocheck(rfv->hdr.c + offset, | |
471 | to, copy, 0), | |
472 | odd); | |
473 | ||
474 | odd = 0; | |
475 | offset += copy; | |
476 | to += copy; | |
477 | len -= copy; | |
478 | ||
479 | if (!len) | |
480 | return 0; | |
481 | } | |
482 | ||
483 | offset -= rfv->hlen; | |
484 | ||
f69e6d13 | 485 | return ip_generic_getfrag(rfv->msg, to, offset, len, odd, skb); |
c008ba5b HX |
486 | } |
487 | ||
1b784140 | 488 | static int raw_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) |
1da177e4 LT |
489 | { |
490 | struct inet_sock *inet = inet_sk(sk); | |
bb191c3e | 491 | struct net *net = sock_net(sk); |
1da177e4 LT |
492 | struct ipcm_cookie ipc; |
493 | struct rtable *rt = NULL; | |
77968b78 | 494 | struct flowi4 fl4; |
1da177e4 | 495 | int free = 0; |
3ca3c68e | 496 | __be32 daddr; |
c1d18f9f | 497 | __be32 saddr; |
1da177e4 LT |
498 | u8 tos; |
499 | int err; | |
f6d8bd05 | 500 | struct ip_options_data opt_copy; |
c008ba5b | 501 | struct raw_frag_vec rfv; |
1da177e4 LT |
502 | |
503 | err = -EMSGSIZE; | |
926d4b81 | 504 | if (len > 0xFFFF) |
1da177e4 LT |
505 | goto out; |
506 | ||
507 | /* | |
508 | * Check the flags. | |
509 | */ | |
510 | ||
511 | err = -EOPNOTSUPP; | |
512 | if (msg->msg_flags & MSG_OOB) /* Mirror BSD error message */ | |
513 | goto out; /* compatibility */ | |
e905a9ed | 514 | |
1da177e4 | 515 | /* |
e905a9ed | 516 | * Get and verify the address. |
1da177e4 LT |
517 | */ |
518 | ||
519 | if (msg->msg_namelen) { | |
342dfc30 | 520 | DECLARE_SOCKADDR(struct sockaddr_in *, usin, msg->msg_name); |
1da177e4 LT |
521 | err = -EINVAL; |
522 | if (msg->msg_namelen < sizeof(*usin)) | |
523 | goto out; | |
524 | if (usin->sin_family != AF_INET) { | |
058bd4d2 JP |
525 | pr_info_once("%s: %s forgot to set AF_INET. Fix it!\n", |
526 | __func__, current->comm); | |
1da177e4 LT |
527 | err = -EAFNOSUPPORT; |
528 | if (usin->sin_family) | |
529 | goto out; | |
530 | } | |
531 | daddr = usin->sin_addr.s_addr; | |
532 | /* ANK: I did not forget to get protocol from port field. | |
533 | * I just do not know, who uses this weirdness. | |
534 | * IP_HDRINCL is much more convenient. | |
535 | */ | |
536 | } else { | |
537 | err = -EDESTADDRREQ; | |
e905a9ed | 538 | if (sk->sk_state != TCP_ESTABLISHED) |
1da177e4 | 539 | goto out; |
c720c7e8 | 540 | daddr = inet->inet_daddr; |
1da177e4 LT |
541 | } |
542 | ||
c14ac945 | 543 | ipc.sockc.tsflags = sk->sk_tsflags; |
c720c7e8 | 544 | ipc.addr = inet->inet_saddr; |
1da177e4 | 545 | ipc.opt = NULL; |
2244d07b | 546 | ipc.tx_flags = 0; |
aa661581 FF |
547 | ipc.ttl = 0; |
548 | ipc.tos = -1; | |
1da177e4 LT |
549 | ipc.oif = sk->sk_bound_dev_if; |
550 | ||
551 | if (msg->msg_controllen) { | |
24025c46 | 552 | err = ip_cmsg_send(sk, msg, &ipc, false); |
91948309 ED |
553 | if (unlikely(err)) { |
554 | kfree(ipc.opt); | |
1da177e4 | 555 | goto out; |
91948309 | 556 | } |
1da177e4 LT |
557 | if (ipc.opt) |
558 | free = 1; | |
559 | } | |
560 | ||
561 | saddr = ipc.addr; | |
562 | ipc.addr = daddr; | |
563 | ||
f6d8bd05 ED |
564 | if (!ipc.opt) { |
565 | struct ip_options_rcu *inet_opt; | |
566 | ||
567 | rcu_read_lock(); | |
568 | inet_opt = rcu_dereference(inet->inet_opt); | |
569 | if (inet_opt) { | |
570 | memcpy(&opt_copy, inet_opt, | |
571 | sizeof(*inet_opt) + inet_opt->opt.optlen); | |
572 | ipc.opt = &opt_copy.opt; | |
573 | } | |
574 | rcu_read_unlock(); | |
575 | } | |
1da177e4 LT |
576 | |
577 | if (ipc.opt) { | |
578 | err = -EINVAL; | |
579 | /* Linux does not mangle headers on raw sockets, | |
580 | * so that IP options + IP_HDRINCL is non-sense. | |
581 | */ | |
582 | if (inet->hdrincl) | |
583 | goto done; | |
f6d8bd05 | 584 | if (ipc.opt->opt.srr) { |
1da177e4 LT |
585 | if (!daddr) |
586 | goto done; | |
f6d8bd05 | 587 | daddr = ipc.opt->opt.faddr; |
1da177e4 LT |
588 | } |
589 | } | |
aa661581 | 590 | tos = get_rtconn_flags(&ipc, sk); |
1da177e4 LT |
591 | if (msg->msg_flags & MSG_DONTROUTE) |
592 | tos |= RTO_ONLINK; | |
593 | ||
f97c1e0c | 594 | if (ipv4_is_multicast(daddr)) { |
1da177e4 LT |
595 | if (!ipc.oif) |
596 | ipc.oif = inet->mc_index; | |
597 | if (!saddr) | |
598 | saddr = inet->mc_addr; | |
76e21053 EH |
599 | } else if (!ipc.oif) |
600 | ipc.oif = inet->uc_index; | |
1da177e4 | 601 | |
77968b78 DM |
602 | flowi4_init_output(&fl4, ipc.oif, sk->sk_mark, tos, |
603 | RT_SCOPE_UNIVERSE, | |
604 | inet->hdrincl ? IPPROTO_RAW : sk->sk_protocol, | |
0e0d44ab | 605 | inet_sk_flowi_flags(sk) | |
c27c9322 | 606 | (inet->hdrincl ? FLOWI_FLAG_KNOWN_NH : 0), |
47670b76 | 607 | daddr, saddr, 0, 0); |
ef164ae3 | 608 | |
77968b78 | 609 | if (!inet->hdrincl) { |
b61e9dcc | 610 | rfv.msg = msg; |
c008ba5b HX |
611 | rfv.hlen = 0; |
612 | ||
613 | err = raw_probe_proto_opt(&rfv, &fl4); | |
77968b78 | 614 | if (err) |
b23dd4fe | 615 | goto done; |
77968b78 DM |
616 | } |
617 | ||
618 | security_sk_classify_flow(sk, flowi4_to_flowi(&fl4)); | |
bb191c3e | 619 | rt = ip_route_output_flow(net, &fl4, sk); |
77968b78 DM |
620 | if (IS_ERR(rt)) { |
621 | err = PTR_ERR(rt); | |
622 | rt = NULL; | |
623 | goto done; | |
1da177e4 | 624 | } |
1da177e4 LT |
625 | |
626 | err = -EACCES; | |
627 | if (rt->rt_flags & RTCF_BROADCAST && !sock_flag(sk, SOCK_BROADCAST)) | |
628 | goto done; | |
629 | ||
630 | if (msg->msg_flags & MSG_CONFIRM) | |
631 | goto do_confirm; | |
632 | back_from_confirm: | |
633 | ||
634 | if (inet->hdrincl) | |
7ae9abfd | 635 | err = raw_send_hdrinc(sk, &fl4, msg, len, |
c14ac945 | 636 | &rt, msg->msg_flags, &ipc.sockc); |
e905a9ed | 637 | |
1da177e4 | 638 | else { |
c14ac945 | 639 | sock_tx_timestamp(sk, ipc.sockc.tsflags, &ipc.tx_flags); |
11878b40 | 640 | |
1da177e4 | 641 | if (!ipc.addr) |
77968b78 | 642 | ipc.addr = fl4.daddr; |
1da177e4 | 643 | lock_sock(sk); |
c008ba5b HX |
644 | err = ip_append_data(sk, &fl4, raw_getfrag, |
645 | &rfv, len, 0, | |
77968b78 | 646 | &ipc, &rt, msg->msg_flags); |
1da177e4 LT |
647 | if (err) |
648 | ip_flush_pending_frames(sk); | |
6ce9e7b5 | 649 | else if (!(msg->msg_flags & MSG_MORE)) { |
77968b78 | 650 | err = ip_push_pending_frames(sk, &fl4); |
6ce9e7b5 ED |
651 | if (err == -ENOBUFS && !inet->recverr) |
652 | err = 0; | |
653 | } | |
1da177e4 LT |
654 | release_sock(sk); |
655 | } | |
656 | done: | |
657 | if (free) | |
658 | kfree(ipc.opt); | |
659 | ip_rt_put(rt); | |
660 | ||
5418c692 JJ |
661 | out: |
662 | if (err < 0) | |
663 | return err; | |
664 | return len; | |
1da177e4 LT |
665 | |
666 | do_confirm: | |
d8d1f30b | 667 | dst_confirm(&rt->dst); |
1da177e4 LT |
668 | if (!(msg->msg_flags & MSG_PROBE) || len) |
669 | goto back_from_confirm; | |
670 | err = 0; | |
671 | goto done; | |
672 | } | |
673 | ||
674 | static void raw_close(struct sock *sk, long timeout) | |
675 | { | |
e905a9ed | 676 | /* |
25985edc | 677 | * Raw sockets may have direct kernel references. Kill them. |
1da177e4 LT |
678 | */ |
679 | ip_ra_control(sk, 0, NULL); | |
680 | ||
681 | sk_common_release(sk); | |
682 | } | |
683 | ||
7d06b2e0 | 684 | static void raw_destroy(struct sock *sk) |
22dd4850 DL |
685 | { |
686 | lock_sock(sk); | |
687 | ip_flush_pending_frames(sk); | |
688 | release_sock(sk); | |
22dd4850 DL |
689 | } |
690 | ||
1da177e4 LT |
691 | /* This gets rid of all the nasties in af_inet. -DaveM */ |
692 | static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) | |
693 | { | |
694 | struct inet_sock *inet = inet_sk(sk); | |
695 | struct sockaddr_in *addr = (struct sockaddr_in *) uaddr; | |
696 | int ret = -EINVAL; | |
697 | int chk_addr_ret; | |
698 | ||
699 | if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_in)) | |
700 | goto out; | |
3b1e0a65 | 701 | chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr); |
1da177e4 LT |
702 | ret = -EADDRNOTAVAIL; |
703 | if (addr->sin_addr.s_addr && chk_addr_ret != RTN_LOCAL && | |
704 | chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST) | |
705 | goto out; | |
c720c7e8 | 706 | inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr; |
1da177e4 | 707 | if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST) |
c720c7e8 | 708 | inet->inet_saddr = 0; /* Use device */ |
1da177e4 LT |
709 | sk_dst_reset(sk); |
710 | ret = 0; | |
711 | out: return ret; | |
712 | } | |
713 | ||
714 | /* | |
715 | * This should be easy, if there is something there | |
716 | * we return it, otherwise we block. | |
717 | */ | |
718 | ||
1b784140 YX |
719 | static int raw_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, |
720 | int noblock, int flags, int *addr_len) | |
1da177e4 LT |
721 | { |
722 | struct inet_sock *inet = inet_sk(sk); | |
723 | size_t copied = 0; | |
724 | int err = -EOPNOTSUPP; | |
342dfc30 | 725 | DECLARE_SOCKADDR(struct sockaddr_in *, sin, msg->msg_name); |
1da177e4 LT |
726 | struct sk_buff *skb; |
727 | ||
728 | if (flags & MSG_OOB) | |
729 | goto out; | |
730 | ||
1da177e4 | 731 | if (flags & MSG_ERRQUEUE) { |
85fbaa75 | 732 | err = ip_recv_error(sk, msg, len, addr_len); |
1da177e4 LT |
733 | goto out; |
734 | } | |
735 | ||
736 | skb = skb_recv_datagram(sk, flags, noblock, &err); | |
737 | if (!skb) | |
738 | goto out; | |
739 | ||
740 | copied = skb->len; | |
741 | if (len < copied) { | |
742 | msg->msg_flags |= MSG_TRUNC; | |
743 | copied = len; | |
744 | } | |
745 | ||
51f3d02b | 746 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
1da177e4 LT |
747 | if (err) |
748 | goto done; | |
749 | ||
3b885787 | 750 | sock_recv_ts_and_drops(msg, sk, skb); |
1da177e4 LT |
751 | |
752 | /* Copy the address. */ | |
753 | if (sin) { | |
754 | sin->sin_family = AF_INET; | |
eddc9ec5 | 755 | sin->sin_addr.s_addr = ip_hdr(skb)->saddr; |
f59fc7f3 | 756 | sin->sin_port = 0; |
1da177e4 | 757 | memset(&sin->sin_zero, 0, sizeof(sin->sin_zero)); |
bceaa902 | 758 | *addr_len = sizeof(*sin); |
1da177e4 LT |
759 | } |
760 | if (inet->cmsg_flags) | |
761 | ip_cmsg_recv(msg, skb); | |
762 | if (flags & MSG_TRUNC) | |
763 | copied = skb->len; | |
764 | done: | |
765 | skb_free_datagram(sk, skb); | |
5418c692 JJ |
766 | out: |
767 | if (err) | |
768 | return err; | |
769 | return copied; | |
1da177e4 LT |
770 | } |
771 | ||
772 | static int raw_init(struct sock *sk) | |
773 | { | |
774 | struct raw_sock *rp = raw_sk(sk); | |
775 | ||
c720c7e8 | 776 | if (inet_sk(sk)->inet_num == IPPROTO_ICMP) |
1da177e4 LT |
777 | memset(&rp->filter, 0, sizeof(rp->filter)); |
778 | return 0; | |
779 | } | |
780 | ||
781 | static int raw_seticmpfilter(struct sock *sk, char __user *optval, int optlen) | |
782 | { | |
783 | if (optlen > sizeof(struct icmp_filter)) | |
784 | optlen = sizeof(struct icmp_filter); | |
785 | if (copy_from_user(&raw_sk(sk)->filter, optval, optlen)) | |
786 | return -EFAULT; | |
787 | return 0; | |
788 | } | |
789 | ||
790 | static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *optlen) | |
791 | { | |
792 | int len, ret = -EFAULT; | |
793 | ||
794 | if (get_user(len, optlen)) | |
795 | goto out; | |
796 | ret = -EINVAL; | |
797 | if (len < 0) | |
798 | goto out; | |
799 | if (len > sizeof(struct icmp_filter)) | |
800 | len = sizeof(struct icmp_filter); | |
801 | ret = -EFAULT; | |
802 | if (put_user(len, optlen) || | |
803 | copy_to_user(optval, &raw_sk(sk)->filter, len)) | |
804 | goto out; | |
805 | ret = 0; | |
806 | out: return ret; | |
807 | } | |
808 | ||
3fdadf7d | 809 | static int do_raw_setsockopt(struct sock *sk, int level, int optname, |
b7058842 | 810 | char __user *optval, unsigned int optlen) |
1da177e4 | 811 | { |
1da177e4 | 812 | if (optname == ICMP_FILTER) { |
c720c7e8 | 813 | if (inet_sk(sk)->inet_num != IPPROTO_ICMP) |
1da177e4 LT |
814 | return -EOPNOTSUPP; |
815 | else | |
816 | return raw_seticmpfilter(sk, optval, optlen); | |
817 | } | |
818 | return -ENOPROTOOPT; | |
819 | } | |
820 | ||
3fdadf7d | 821 | static int raw_setsockopt(struct sock *sk, int level, int optname, |
b7058842 | 822 | char __user *optval, unsigned int optlen) |
1da177e4 LT |
823 | { |
824 | if (level != SOL_RAW) | |
3fdadf7d DM |
825 | return ip_setsockopt(sk, level, optname, optval, optlen); |
826 | return do_raw_setsockopt(sk, level, optname, optval, optlen); | |
827 | } | |
1da177e4 | 828 | |
3fdadf7d DM |
829 | #ifdef CONFIG_COMPAT |
830 | static int compat_raw_setsockopt(struct sock *sk, int level, int optname, | |
b7058842 | 831 | char __user *optval, unsigned int optlen) |
3fdadf7d DM |
832 | { |
833 | if (level != SOL_RAW) | |
543d9cfe | 834 | return compat_ip_setsockopt(sk, level, optname, optval, optlen); |
3fdadf7d DM |
835 | return do_raw_setsockopt(sk, level, optname, optval, optlen); |
836 | } | |
837 | #endif | |
838 | ||
839 | static int do_raw_getsockopt(struct sock *sk, int level, int optname, | |
840 | char __user *optval, int __user *optlen) | |
841 | { | |
1da177e4 | 842 | if (optname == ICMP_FILTER) { |
c720c7e8 | 843 | if (inet_sk(sk)->inet_num != IPPROTO_ICMP) |
1da177e4 LT |
844 | return -EOPNOTSUPP; |
845 | else | |
846 | return raw_geticmpfilter(sk, optval, optlen); | |
847 | } | |
848 | return -ENOPROTOOPT; | |
849 | } | |
850 | ||
3fdadf7d DM |
851 | static int raw_getsockopt(struct sock *sk, int level, int optname, |
852 | char __user *optval, int __user *optlen) | |
853 | { | |
854 | if (level != SOL_RAW) | |
855 | return ip_getsockopt(sk, level, optname, optval, optlen); | |
856 | return do_raw_getsockopt(sk, level, optname, optval, optlen); | |
857 | } | |
858 | ||
859 | #ifdef CONFIG_COMPAT | |
860 | static int compat_raw_getsockopt(struct sock *sk, int level, int optname, | |
543d9cfe | 861 | char __user *optval, int __user *optlen) |
3fdadf7d DM |
862 | { |
863 | if (level != SOL_RAW) | |
543d9cfe | 864 | return compat_ip_getsockopt(sk, level, optname, optval, optlen); |
3fdadf7d DM |
865 | return do_raw_getsockopt(sk, level, optname, optval, optlen); |
866 | } | |
867 | #endif | |
868 | ||
1da177e4 LT |
869 | static int raw_ioctl(struct sock *sk, int cmd, unsigned long arg) |
870 | { | |
871 | switch (cmd) { | |
4500ebf8 JP |
872 | case SIOCOUTQ: { |
873 | int amount = sk_wmem_alloc_get(sk); | |
31e6d363 | 874 | |
4500ebf8 JP |
875 | return put_user(amount, (int __user *)arg); |
876 | } | |
877 | case SIOCINQ: { | |
878 | struct sk_buff *skb; | |
879 | int amount = 0; | |
880 | ||
881 | spin_lock_bh(&sk->sk_receive_queue.lock); | |
882 | skb = skb_peek(&sk->sk_receive_queue); | |
00db4124 | 883 | if (skb) |
4500ebf8 JP |
884 | amount = skb->len; |
885 | spin_unlock_bh(&sk->sk_receive_queue.lock); | |
886 | return put_user(amount, (int __user *)arg); | |
887 | } | |
1da177e4 | 888 | |
4500ebf8 | 889 | default: |
1da177e4 | 890 | #ifdef CONFIG_IP_MROUTE |
4500ebf8 | 891 | return ipmr_ioctl(sk, cmd, (void __user *)arg); |
1da177e4 | 892 | #else |
4500ebf8 | 893 | return -ENOIOCTLCMD; |
1da177e4 LT |
894 | #endif |
895 | } | |
896 | } | |
897 | ||
709b46e8 EB |
898 | #ifdef CONFIG_COMPAT |
899 | static int compat_raw_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg) | |
900 | { | |
901 | switch (cmd) { | |
902 | case SIOCOUTQ: | |
903 | case SIOCINQ: | |
904 | return -ENOIOCTLCMD; | |
905 | default: | |
906 | #ifdef CONFIG_IP_MROUTE | |
907 | return ipmr_compat_ioctl(sk, cmd, compat_ptr(arg)); | |
908 | #else | |
909 | return -ENOIOCTLCMD; | |
910 | #endif | |
911 | } | |
912 | } | |
913 | #endif | |
914 | ||
1da177e4 | 915 | struct proto raw_prot = { |
543d9cfe ACM |
916 | .name = "RAW", |
917 | .owner = THIS_MODULE, | |
918 | .close = raw_close, | |
22dd4850 | 919 | .destroy = raw_destroy, |
543d9cfe | 920 | .connect = ip4_datagram_connect, |
286c72de | 921 | .disconnect = __udp_disconnect, |
543d9cfe ACM |
922 | .ioctl = raw_ioctl, |
923 | .init = raw_init, | |
924 | .setsockopt = raw_setsockopt, | |
925 | .getsockopt = raw_getsockopt, | |
926 | .sendmsg = raw_sendmsg, | |
927 | .recvmsg = raw_recvmsg, | |
928 | .bind = raw_bind, | |
929 | .backlog_rcv = raw_rcv_skb, | |
8141ed9f | 930 | .release_cb = ip4_datagram_release_cb, |
fc8717ba PE |
931 | .hash = raw_hash_sk, |
932 | .unhash = raw_unhash_sk, | |
543d9cfe | 933 | .obj_size = sizeof(struct raw_sock), |
fc8717ba | 934 | .h.raw_hash = &raw_v4_hashinfo, |
3fdadf7d | 935 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
936 | .compat_setsockopt = compat_raw_setsockopt, |
937 | .compat_getsockopt = compat_raw_getsockopt, | |
709b46e8 | 938 | .compat_ioctl = compat_raw_ioctl, |
3fdadf7d | 939 | #endif |
1da177e4 LT |
940 | }; |
941 | ||
942 | #ifdef CONFIG_PROC_FS | |
1da177e4 LT |
943 | static struct sock *raw_get_first(struct seq_file *seq) |
944 | { | |
945 | struct sock *sk; | |
5a5f3a8d | 946 | struct raw_iter_state *state = raw_seq_private(seq); |
1da177e4 | 947 | |
b673e4df PE |
948 | for (state->bucket = 0; state->bucket < RAW_HTABLE_SIZE; |
949 | ++state->bucket) { | |
b67bfe0d | 950 | sk_for_each(sk, &state->h->ht[state->bucket]) |
1218854a | 951 | if (sock_net(sk) == seq_file_net(seq)) |
1da177e4 LT |
952 | goto found; |
953 | } | |
954 | sk = NULL; | |
955 | found: | |
956 | return sk; | |
957 | } | |
958 | ||
959 | static struct sock *raw_get_next(struct seq_file *seq, struct sock *sk) | |
960 | { | |
5a5f3a8d | 961 | struct raw_iter_state *state = raw_seq_private(seq); |
1da177e4 LT |
962 | |
963 | do { | |
964 | sk = sk_next(sk); | |
965 | try_again: | |
966 | ; | |
1218854a | 967 | } while (sk && sock_net(sk) != seq_file_net(seq)); |
1da177e4 | 968 | |
b673e4df | 969 | if (!sk && ++state->bucket < RAW_HTABLE_SIZE) { |
42a73808 | 970 | sk = sk_head(&state->h->ht[state->bucket]); |
1da177e4 LT |
971 | goto try_again; |
972 | } | |
973 | return sk; | |
974 | } | |
975 | ||
976 | static struct sock *raw_get_idx(struct seq_file *seq, loff_t pos) | |
977 | { | |
978 | struct sock *sk = raw_get_first(seq); | |
979 | ||
980 | if (sk) | |
981 | while (pos && (sk = raw_get_next(seq, sk)) != NULL) | |
982 | --pos; | |
983 | return pos ? NULL : sk; | |
984 | } | |
985 | ||
42a73808 | 986 | void *raw_seq_start(struct seq_file *seq, loff_t *pos) |
1da177e4 | 987 | { |
42a73808 PE |
988 | struct raw_iter_state *state = raw_seq_private(seq); |
989 | ||
990 | read_lock(&state->h->lock); | |
1da177e4 LT |
991 | return *pos ? raw_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; |
992 | } | |
42a73808 | 993 | EXPORT_SYMBOL_GPL(raw_seq_start); |
1da177e4 | 994 | |
42a73808 | 995 | void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
1da177e4 LT |
996 | { |
997 | struct sock *sk; | |
998 | ||
999 | if (v == SEQ_START_TOKEN) | |
1000 | sk = raw_get_first(seq); | |
1001 | else | |
1002 | sk = raw_get_next(seq, v); | |
1003 | ++*pos; | |
1004 | return sk; | |
1005 | } | |
42a73808 | 1006 | EXPORT_SYMBOL_GPL(raw_seq_next); |
1da177e4 | 1007 | |
42a73808 | 1008 | void raw_seq_stop(struct seq_file *seq, void *v) |
1da177e4 | 1009 | { |
42a73808 PE |
1010 | struct raw_iter_state *state = raw_seq_private(seq); |
1011 | ||
1012 | read_unlock(&state->h->lock); | |
1da177e4 | 1013 | } |
42a73808 | 1014 | EXPORT_SYMBOL_GPL(raw_seq_stop); |
1da177e4 | 1015 | |
8cd850ef | 1016 | static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i) |
1da177e4 LT |
1017 | { |
1018 | struct inet_sock *inet = inet_sk(sp); | |
c720c7e8 ED |
1019 | __be32 dest = inet->inet_daddr, |
1020 | src = inet->inet_rcv_saddr; | |
1da177e4 | 1021 | __u16 destp = 0, |
c720c7e8 | 1022 | srcp = inet->inet_num; |
1da177e4 | 1023 | |
8cd850ef | 1024 | seq_printf(seq, "%4d: %08X:%04X %08X:%04X" |
d14c5ab6 | 1025 | " %02X %08X:%08X %02X:%08lX %08X %5u %8d %lu %d %pK %d\n", |
e905a9ed | 1026 | i, src, srcp, dest, destp, sp->sk_state, |
31e6d363 ED |
1027 | sk_wmem_alloc_get(sp), |
1028 | sk_rmem_alloc_get(sp), | |
a7cb5a49 EB |
1029 | 0, 0L, 0, |
1030 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)), | |
1031 | 0, sock_i_ino(sp), | |
33c732c3 | 1032 | atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops)); |
1da177e4 LT |
1033 | } |
1034 | ||
1035 | static int raw_seq_show(struct seq_file *seq, void *v) | |
1036 | { | |
1da177e4 | 1037 | if (v == SEQ_START_TOKEN) |
8cd850ef DL |
1038 | seq_printf(seq, " sl local_address rem_address st tx_queue " |
1039 | "rx_queue tr tm->when retrnsmt uid timeout " | |
cb61cb9b | 1040 | "inode ref pointer drops\n"); |
8cd850ef DL |
1041 | else |
1042 | raw_sock_seq_show(seq, v, raw_seq_private(seq)->bucket); | |
1da177e4 LT |
1043 | return 0; |
1044 | } | |
1045 | ||
f690808e | 1046 | static const struct seq_operations raw_seq_ops = { |
1da177e4 LT |
1047 | .start = raw_seq_start, |
1048 | .next = raw_seq_next, | |
1049 | .stop = raw_seq_stop, | |
1050 | .show = raw_seq_show, | |
1051 | }; | |
1052 | ||
3046d767 DL |
1053 | int raw_seq_open(struct inode *ino, struct file *file, |
1054 | struct raw_hashinfo *h, const struct seq_operations *ops) | |
1da177e4 | 1055 | { |
f51d599f | 1056 | int err; |
42a73808 PE |
1057 | struct raw_iter_state *i; |
1058 | ||
3046d767 | 1059 | err = seq_open_net(ino, file, ops, sizeof(struct raw_iter_state)); |
f51d599f PE |
1060 | if (err < 0) |
1061 | return err; | |
42a73808 | 1062 | |
f51d599f | 1063 | i = raw_seq_private((struct seq_file *)file->private_data); |
42a73808 | 1064 | i->h = h; |
42a73808 PE |
1065 | return 0; |
1066 | } | |
1067 | EXPORT_SYMBOL_GPL(raw_seq_open); | |
1068 | ||
1069 | static int raw_v4_seq_open(struct inode *inode, struct file *file) | |
1070 | { | |
3046d767 | 1071 | return raw_seq_open(inode, file, &raw_v4_hashinfo, &raw_seq_ops); |
1da177e4 LT |
1072 | } |
1073 | ||
9a32144e | 1074 | static const struct file_operations raw_seq_fops = { |
1da177e4 | 1075 | .owner = THIS_MODULE, |
42a73808 | 1076 | .open = raw_v4_seq_open, |
1da177e4 LT |
1077 | .read = seq_read, |
1078 | .llseek = seq_lseek, | |
f51d599f | 1079 | .release = seq_release_net, |
1da177e4 LT |
1080 | }; |
1081 | ||
a308da16 | 1082 | static __net_init int raw_init_net(struct net *net) |
1da177e4 | 1083 | { |
d4beaa66 | 1084 | if (!proc_create("raw", S_IRUGO, net->proc_net, &raw_seq_fops)) |
1da177e4 | 1085 | return -ENOMEM; |
a308da16 | 1086 | |
1da177e4 LT |
1087 | return 0; |
1088 | } | |
1089 | ||
a308da16 PE |
1090 | static __net_exit void raw_exit_net(struct net *net) |
1091 | { | |
ece31ffd | 1092 | remove_proc_entry("raw", net->proc_net); |
a308da16 PE |
1093 | } |
1094 | ||
1095 | static __net_initdata struct pernet_operations raw_net_ops = { | |
1096 | .init = raw_init_net, | |
1097 | .exit = raw_exit_net, | |
1098 | }; | |
1099 | ||
1100 | int __init raw_proc_init(void) | |
1101 | { | |
1102 | return register_pernet_subsys(&raw_net_ops); | |
1103 | } | |
1104 | ||
1da177e4 LT |
1105 | void __init raw_proc_exit(void) |
1106 | { | |
a308da16 | 1107 | unregister_pernet_subsys(&raw_net_ops); |
1da177e4 LT |
1108 | } |
1109 | #endif /* CONFIG_PROC_FS */ |