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> |
1da177e4 LT |
41 | #include <asm/atomic.h> |
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> | |
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> |
457c4cbc | 60 | #include <net/net_namespace.h> |
1da177e4 LT |
61 | #include <net/dst.h> |
62 | #include <net/sock.h> | |
1da177e4 LT |
63 | #include <linux/ip.h> |
64 | #include <linux/net.h> | |
65 | #include <net/ip.h> | |
66 | #include <net/icmp.h> | |
67 | #include <net/udp.h> | |
68 | #include <net/raw.h> | |
69 | #include <net/snmp.h> | |
c752f073 | 70 | #include <net/tcp_states.h> |
1da177e4 LT |
71 | #include <net/inet_common.h> |
72 | #include <net/checksum.h> | |
73 | #include <net/xfrm.h> | |
74 | #include <linux/rtnetlink.h> | |
75 | #include <linux/proc_fs.h> | |
76 | #include <linux/seq_file.h> | |
77 | #include <linux/netfilter.h> | |
78 | #include <linux/netfilter_ipv4.h> | |
709b46e8 | 79 | #include <linux/compat.h> |
1da177e4 | 80 | |
b673e4df | 81 | static struct raw_hashinfo raw_v4_hashinfo = { |
938b93ad | 82 | .lock = __RW_LOCK_UNLOCKED(raw_v4_hashinfo.lock), |
b673e4df | 83 | }; |
1da177e4 | 84 | |
fc8717ba | 85 | void raw_hash_sk(struct sock *sk) |
1da177e4 | 86 | { |
fc8717ba | 87 | struct raw_hashinfo *h = sk->sk_prot->h.raw_hash; |
65b4c50b | 88 | struct hlist_head *head; |
1da177e4 | 89 | |
c720c7e8 | 90 | head = &h->ht[inet_sk(sk)->inet_num & (RAW_HTABLE_SIZE - 1)]; |
65b4c50b PE |
91 | |
92 | write_lock_bh(&h->lock); | |
1da177e4 | 93 | sk_add_node(sk, head); |
c29a0bc4 | 94 | sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1); |
65b4c50b PE |
95 | write_unlock_bh(&h->lock); |
96 | } | |
97 | EXPORT_SYMBOL_GPL(raw_hash_sk); | |
98 | ||
fc8717ba | 99 | void raw_unhash_sk(struct sock *sk) |
ab70768e | 100 | { |
fc8717ba PE |
101 | struct raw_hashinfo *h = sk->sk_prot->h.raw_hash; |
102 | ||
ab70768e PE |
103 | write_lock_bh(&h->lock); |
104 | if (sk_del_node_init(sk)) | |
c29a0bc4 | 105 | sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1); |
ab70768e PE |
106 | write_unlock_bh(&h->lock); |
107 | } | |
108 | EXPORT_SYMBOL_GPL(raw_unhash_sk); | |
109 | ||
be185884 PE |
110 | static struct sock *__raw_v4_lookup(struct net *net, struct sock *sk, |
111 | unsigned short num, __be32 raddr, __be32 laddr, int dif) | |
1da177e4 LT |
112 | { |
113 | struct hlist_node *node; | |
114 | ||
115 | sk_for_each_from(sk, node) { | |
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 | */ | |
133 | static __inline__ int icmp_filter(struct sock *sk, struct sk_buff *skb) | |
134 | { | |
135 | int type; | |
136 | ||
137 | if (!pskb_may_pull(skb, sizeof(struct icmphdr))) | |
138 | return 1; | |
139 | ||
88c7664f | 140 | type = icmp_hdr(skb)->type; |
1da177e4 LT |
141 | if (type < 32) { |
142 | __u32 data = raw_sk(sk)->filter.data; | |
143 | ||
144 | return ((1 << type) & data) != 0; | |
145 | } | |
146 | ||
147 | /* Do not block unknown ICMP types */ | |
148 | return 0; | |
149 | } | |
150 | ||
151 | /* IP input processing comes here for RAW socket delivery. | |
152 | * Caller owns SKB, so we must make clones. | |
153 | * | |
154 | * RFC 1122: SHOULD pass TOS value up to the transport layer. | |
155 | * -> It does. And not only TOS, but all IP header. | |
156 | */ | |
b71d1d42 | 157 | static int raw_v4_input(struct sk_buff *skb, const struct iphdr *iph, int hash) |
1da177e4 LT |
158 | { |
159 | struct sock *sk; | |
160 | struct hlist_head *head; | |
d13964f4 | 161 | int delivered = 0; |
be185884 | 162 | struct net *net; |
1da177e4 | 163 | |
b673e4df PE |
164 | read_lock(&raw_v4_hashinfo.lock); |
165 | head = &raw_v4_hashinfo.ht[hash]; | |
1da177e4 LT |
166 | if (hlist_empty(head)) |
167 | goto out; | |
be185884 | 168 | |
c346dca1 | 169 | net = dev_net(skb->dev); |
be185884 | 170 | sk = __raw_v4_lookup(net, __sk_head(head), iph->protocol, |
1da177e4 LT |
171 | iph->saddr, iph->daddr, |
172 | skb->dev->ifindex); | |
173 | ||
174 | while (sk) { | |
d13964f4 | 175 | delivered = 1; |
1da177e4 LT |
176 | if (iph->protocol != IPPROTO_ICMP || !icmp_filter(sk, skb)) { |
177 | struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC); | |
178 | ||
179 | /* Not releasing hash table! */ | |
180 | if (clone) | |
181 | raw_rcv(sk, clone); | |
182 | } | |
be185884 | 183 | sk = __raw_v4_lookup(net, sk_next(sk), iph->protocol, |
1da177e4 LT |
184 | iph->saddr, iph->daddr, |
185 | skb->dev->ifindex); | |
186 | } | |
187 | out: | |
b673e4df | 188 | read_unlock(&raw_v4_hashinfo.lock); |
d13964f4 | 189 | return delivered; |
1da177e4 LT |
190 | } |
191 | ||
7bc54c90 PE |
192 | int raw_local_deliver(struct sk_buff *skb, int protocol) |
193 | { | |
194 | int hash; | |
195 | struct sock *raw_sk; | |
196 | ||
b673e4df PE |
197 | hash = protocol & (RAW_HTABLE_SIZE - 1); |
198 | raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]); | |
7bc54c90 PE |
199 | |
200 | /* If there maybe a raw socket we must check - if not we | |
201 | * don't care less | |
202 | */ | |
203 | if (raw_sk && !raw_v4_input(skb, ip_hdr(skb), hash)) | |
204 | raw_sk = NULL; | |
205 | ||
206 | return raw_sk != NULL; | |
207 | ||
208 | } | |
209 | ||
210 | static void raw_err(struct sock *sk, struct sk_buff *skb, u32 info) | |
1da177e4 LT |
211 | { |
212 | struct inet_sock *inet = inet_sk(sk); | |
88c7664f ACM |
213 | const int type = icmp_hdr(skb)->type; |
214 | const int code = icmp_hdr(skb)->code; | |
1da177e4 LT |
215 | int err = 0; |
216 | int harderr = 0; | |
217 | ||
218 | /* Report error on raw socket, if: | |
219 | 1. User requested ip_recverr. | |
220 | 2. Socket is connected (otherwise the error indication | |
221 | is useless without ip_recverr and error is hard. | |
222 | */ | |
223 | if (!inet->recverr && sk->sk_state != TCP_ESTABLISHED) | |
224 | return; | |
225 | ||
226 | switch (type) { | |
227 | default: | |
228 | case ICMP_TIME_EXCEEDED: | |
229 | err = EHOSTUNREACH; | |
230 | break; | |
231 | case ICMP_SOURCE_QUENCH: | |
232 | return; | |
233 | case ICMP_PARAMETERPROB: | |
234 | err = EPROTO; | |
235 | harderr = 1; | |
236 | break; | |
237 | case ICMP_DEST_UNREACH: | |
238 | err = EHOSTUNREACH; | |
239 | if (code > NR_ICMP_UNREACH) | |
240 | break; | |
241 | err = icmp_err_convert[code].errno; | |
242 | harderr = icmp_err_convert[code].fatal; | |
243 | if (code == ICMP_FRAG_NEEDED) { | |
244 | harderr = inet->pmtudisc != IP_PMTUDISC_DONT; | |
245 | err = EMSGSIZE; | |
246 | } | |
247 | } | |
248 | ||
249 | if (inet->recverr) { | |
b71d1d42 | 250 | const struct iphdr *iph = (const struct iphdr *)skb->data; |
1da177e4 LT |
251 | u8 *payload = skb->data + (iph->ihl << 2); |
252 | ||
253 | if (inet->hdrincl) | |
254 | payload = skb->data; | |
255 | ip_icmp_error(sk, skb, err, 0, info, payload); | |
256 | } | |
257 | ||
258 | if (inet->recverr || harderr) { | |
259 | sk->sk_err = err; | |
260 | sk->sk_error_report(sk); | |
261 | } | |
262 | } | |
263 | ||
7bc54c90 PE |
264 | void raw_icmp_error(struct sk_buff *skb, int protocol, u32 info) |
265 | { | |
266 | int hash; | |
267 | struct sock *raw_sk; | |
b71d1d42 | 268 | const struct iphdr *iph; |
be185884 | 269 | struct net *net; |
7bc54c90 | 270 | |
b673e4df | 271 | hash = protocol & (RAW_HTABLE_SIZE - 1); |
7bc54c90 | 272 | |
b673e4df PE |
273 | read_lock(&raw_v4_hashinfo.lock); |
274 | raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]); | |
7bc54c90 | 275 | if (raw_sk != NULL) { |
b71d1d42 | 276 | iph = (const struct iphdr *)skb->data; |
c346dca1 | 277 | net = dev_net(skb->dev); |
be185884 PE |
278 | |
279 | while ((raw_sk = __raw_v4_lookup(net, raw_sk, protocol, | |
280 | iph->daddr, iph->saddr, | |
7bc54c90 PE |
281 | skb->dev->ifindex)) != NULL) { |
282 | raw_err(raw_sk, skb, info); | |
283 | raw_sk = sk_next(raw_sk); | |
b71d1d42 | 284 | iph = (const struct iphdr *)skb->data; |
7bc54c90 PE |
285 | } |
286 | } | |
b673e4df | 287 | read_unlock(&raw_v4_hashinfo.lock); |
7bc54c90 PE |
288 | } |
289 | ||
1da177e4 LT |
290 | static int raw_rcv_skb(struct sock * sk, struct sk_buff * skb) |
291 | { | |
292 | /* Charge it to the socket. */ | |
e905a9ed | 293 | |
f84af32c | 294 | if (ip_queue_rcv_skb(sk, skb) < 0) { |
1da177e4 LT |
295 | kfree_skb(skb); |
296 | return NET_RX_DROP; | |
297 | } | |
298 | ||
299 | return NET_RX_SUCCESS; | |
300 | } | |
301 | ||
302 | int raw_rcv(struct sock *sk, struct sk_buff *skb) | |
303 | { | |
304 | if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) { | |
33c732c3 | 305 | atomic_inc(&sk->sk_drops); |
1da177e4 LT |
306 | kfree_skb(skb); |
307 | return NET_RX_DROP; | |
308 | } | |
b59c2701 | 309 | nf_reset(skb); |
1da177e4 | 310 | |
d56f90a7 | 311 | skb_push(skb, skb->data - skb_network_header(skb)); |
1da177e4 LT |
312 | |
313 | raw_rcv_skb(sk, skb); | |
314 | return 0; | |
315 | } | |
316 | ||
77968b78 DM |
317 | static int raw_send_hdrinc(struct sock *sk, struct flowi4 *fl4, |
318 | void *from, size_t length, | |
319 | struct rtable **rtp, | |
320 | unsigned int flags) | |
1da177e4 LT |
321 | { |
322 | struct inet_sock *inet = inet_sk(sk); | |
0388b004 | 323 | struct net *net = sock_net(sk); |
1da177e4 LT |
324 | struct iphdr *iph; |
325 | struct sk_buff *skb; | |
f844c74f | 326 | unsigned int iphlen; |
1da177e4 | 327 | int err; |
1789a640 | 328 | struct rtable *rt = *rtp; |
1da177e4 | 329 | |
d8d1f30b | 330 | if (length > rt->dst.dev->mtu) { |
77968b78 | 331 | ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport, |
d8d1f30b | 332 | rt->dst.dev->mtu); |
1da177e4 LT |
333 | return -EMSGSIZE; |
334 | } | |
335 | if (flags&MSG_PROBE) | |
336 | goto out; | |
337 | ||
f5184d26 | 338 | skb = sock_alloc_send_skb(sk, |
d8d1f30b | 339 | length + LL_ALLOCATED_SPACE(rt->dst.dev) + 15, |
f5184d26 | 340 | flags & MSG_DONTWAIT, &err); |
1da177e4 | 341 | if (skb == NULL) |
e905a9ed | 342 | goto error; |
d8d1f30b | 343 | skb_reserve(skb, LL_RESERVED_SPACE(rt->dst.dev)); |
1da177e4 LT |
344 | |
345 | skb->priority = sk->sk_priority; | |
4a19ec58 | 346 | skb->mark = sk->sk_mark; |
d8d1f30b | 347 | skb_dst_set(skb, &rt->dst); |
1789a640 | 348 | *rtp = NULL; |
1da177e4 | 349 | |
7e28ecc2 | 350 | skb_reset_network_header(skb); |
eddc9ec5 | 351 | iph = ip_hdr(skb); |
7e28ecc2 | 352 | skb_put(skb, length); |
1da177e4 LT |
353 | |
354 | skb->ip_summed = CHECKSUM_NONE; | |
355 | ||
b0e380b1 | 356 | skb->transport_header = skb->network_header; |
55888dfb NH |
357 | err = -EFAULT; |
358 | if (memcpy_fromiovecend((void *)iph, from, 0, length)) | |
359 | goto error_free; | |
1da177e4 | 360 | |
f844c74f | 361 | iphlen = iph->ihl * 4; |
55888dfb NH |
362 | |
363 | /* | |
364 | * We don't want to modify the ip header, but we do need to | |
365 | * be sure that it won't cause problems later along the network | |
366 | * stack. Specifically we want to make sure that iph->ihl is a | |
367 | * sane value. If ihl points beyond the length of the buffer passed | |
368 | * in, reject the frame as invalid | |
369 | */ | |
370 | err = -EINVAL; | |
371 | if (iphlen > length) | |
372 | goto error_free; | |
373 | ||
374 | if (iphlen >= sizeof(*iph)) { | |
1da177e4 | 375 | if (!iph->saddr) |
77968b78 | 376 | iph->saddr = fl4->saddr; |
1da177e4 LT |
377 | iph->check = 0; |
378 | iph->tot_len = htons(length); | |
379 | if (!iph->id) | |
d8d1f30b | 380 | ip_select_ident(iph, &rt->dst, NULL); |
1da177e4 LT |
381 | |
382 | iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); | |
383 | } | |
96793b48 | 384 | if (iph->protocol == IPPROTO_ICMP) |
0388b004 | 385 | icmp_out_count(net, ((struct icmphdr *) |
96793b48 | 386 | skb_transport_header(skb))->type); |
1da177e4 | 387 | |
9bbc768a | 388 | err = NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_OUT, skb, NULL, |
d8d1f30b | 389 | rt->dst.dev, dst_output); |
1da177e4 | 390 | if (err > 0) |
6ce9e7b5 | 391 | err = net_xmit_errno(err); |
1da177e4 LT |
392 | if (err) |
393 | goto error; | |
394 | out: | |
395 | return 0; | |
396 | ||
55888dfb | 397 | error_free: |
1da177e4 LT |
398 | kfree_skb(skb); |
399 | error: | |
5e38e270 | 400 | IP_INC_STATS(net, IPSTATS_MIB_OUTDISCARDS); |
6ce9e7b5 ED |
401 | if (err == -ENOBUFS && !inet->recverr) |
402 | err = 0; | |
e905a9ed | 403 | return err; |
1da177e4 LT |
404 | } |
405 | ||
9d6ec938 | 406 | static int raw_probe_proto_opt(struct flowi4 *fl4, struct msghdr *msg) |
1da177e4 LT |
407 | { |
408 | struct iovec *iov; | |
409 | u8 __user *type = NULL; | |
410 | u8 __user *code = NULL; | |
411 | int probed = 0; | |
93765d8a | 412 | unsigned int i; |
1da177e4 LT |
413 | |
414 | if (!msg->msg_iov) | |
a27b58fe | 415 | return 0; |
1da177e4 LT |
416 | |
417 | for (i = 0; i < msg->msg_iovlen; i++) { | |
418 | iov = &msg->msg_iov[i]; | |
419 | if (!iov) | |
420 | continue; | |
421 | ||
9d6ec938 | 422 | switch (fl4->flowi4_proto) { |
1da177e4 LT |
423 | case IPPROTO_ICMP: |
424 | /* check if one-byte field is readable or not. */ | |
425 | if (iov->iov_base && iov->iov_len < 1) | |
426 | break; | |
427 | ||
428 | if (!type) { | |
429 | type = iov->iov_base; | |
430 | /* check if code field is readable or not. */ | |
431 | if (iov->iov_len > 1) | |
432 | code = type + 1; | |
433 | } else if (!code) | |
434 | code = iov->iov_base; | |
435 | ||
436 | if (type && code) { | |
9cce96df DM |
437 | if (get_user(fl4->fl4_icmp_type, type) || |
438 | get_user(fl4->fl4_icmp_code, code)) | |
a27b58fe | 439 | return -EFAULT; |
1da177e4 LT |
440 | probed = 1; |
441 | } | |
442 | break; | |
443 | default: | |
444 | probed = 1; | |
445 | break; | |
446 | } | |
447 | if (probed) | |
448 | break; | |
449 | } | |
a27b58fe | 450 | return 0; |
1da177e4 LT |
451 | } |
452 | ||
453 | static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, | |
454 | size_t len) | |
455 | { | |
456 | struct inet_sock *inet = inet_sk(sk); | |
457 | struct ipcm_cookie ipc; | |
458 | struct rtable *rt = NULL; | |
77968b78 | 459 | struct flowi4 fl4; |
1da177e4 | 460 | int free = 0; |
3ca3c68e | 461 | __be32 daddr; |
c1d18f9f | 462 | __be32 saddr; |
1da177e4 LT |
463 | u8 tos; |
464 | int err; | |
f6d8bd05 | 465 | struct ip_options_data opt_copy; |
1da177e4 LT |
466 | |
467 | err = -EMSGSIZE; | |
926d4b81 | 468 | if (len > 0xFFFF) |
1da177e4 LT |
469 | goto out; |
470 | ||
471 | /* | |
472 | * Check the flags. | |
473 | */ | |
474 | ||
475 | err = -EOPNOTSUPP; | |
476 | if (msg->msg_flags & MSG_OOB) /* Mirror BSD error message */ | |
477 | goto out; /* compatibility */ | |
e905a9ed | 478 | |
1da177e4 | 479 | /* |
e905a9ed | 480 | * Get and verify the address. |
1da177e4 LT |
481 | */ |
482 | ||
483 | if (msg->msg_namelen) { | |
5a5f3a8d | 484 | struct sockaddr_in *usin = (struct sockaddr_in *)msg->msg_name; |
1da177e4 LT |
485 | err = -EINVAL; |
486 | if (msg->msg_namelen < sizeof(*usin)) | |
487 | goto out; | |
488 | if (usin->sin_family != AF_INET) { | |
489 | static int complained; | |
490 | if (!complained++) | |
491 | printk(KERN_INFO "%s forgot to set AF_INET in " | |
492 | "raw sendmsg. Fix it!\n", | |
493 | current->comm); | |
494 | err = -EAFNOSUPPORT; | |
495 | if (usin->sin_family) | |
496 | goto out; | |
497 | } | |
498 | daddr = usin->sin_addr.s_addr; | |
499 | /* ANK: I did not forget to get protocol from port field. | |
500 | * I just do not know, who uses this weirdness. | |
501 | * IP_HDRINCL is much more convenient. | |
502 | */ | |
503 | } else { | |
504 | err = -EDESTADDRREQ; | |
e905a9ed | 505 | if (sk->sk_state != TCP_ESTABLISHED) |
1da177e4 | 506 | goto out; |
c720c7e8 | 507 | daddr = inet->inet_daddr; |
1da177e4 LT |
508 | } |
509 | ||
c720c7e8 | 510 | ipc.addr = inet->inet_saddr; |
1da177e4 | 511 | ipc.opt = NULL; |
2244d07b | 512 | ipc.tx_flags = 0; |
1da177e4 LT |
513 | ipc.oif = sk->sk_bound_dev_if; |
514 | ||
515 | if (msg->msg_controllen) { | |
3b1e0a65 | 516 | err = ip_cmsg_send(sock_net(sk), msg, &ipc); |
1da177e4 LT |
517 | if (err) |
518 | goto out; | |
519 | if (ipc.opt) | |
520 | free = 1; | |
521 | } | |
522 | ||
523 | saddr = ipc.addr; | |
524 | ipc.addr = daddr; | |
525 | ||
f6d8bd05 ED |
526 | if (!ipc.opt) { |
527 | struct ip_options_rcu *inet_opt; | |
528 | ||
529 | rcu_read_lock(); | |
530 | inet_opt = rcu_dereference(inet->inet_opt); | |
531 | if (inet_opt) { | |
532 | memcpy(&opt_copy, inet_opt, | |
533 | sizeof(*inet_opt) + inet_opt->opt.optlen); | |
534 | ipc.opt = &opt_copy.opt; | |
535 | } | |
536 | rcu_read_unlock(); | |
537 | } | |
1da177e4 LT |
538 | |
539 | if (ipc.opt) { | |
540 | err = -EINVAL; | |
541 | /* Linux does not mangle headers on raw sockets, | |
542 | * so that IP options + IP_HDRINCL is non-sense. | |
543 | */ | |
544 | if (inet->hdrincl) | |
545 | goto done; | |
f6d8bd05 | 546 | if (ipc.opt->opt.srr) { |
1da177e4 LT |
547 | if (!daddr) |
548 | goto done; | |
f6d8bd05 | 549 | daddr = ipc.opt->opt.faddr; |
1da177e4 LT |
550 | } |
551 | } | |
552 | tos = RT_CONN_FLAGS(sk); | |
553 | if (msg->msg_flags & MSG_DONTROUTE) | |
554 | tos |= RTO_ONLINK; | |
555 | ||
f97c1e0c | 556 | if (ipv4_is_multicast(daddr)) { |
1da177e4 LT |
557 | if (!ipc.oif) |
558 | ipc.oif = inet->mc_index; | |
559 | if (!saddr) | |
560 | saddr = inet->mc_addr; | |
561 | } | |
562 | ||
77968b78 DM |
563 | flowi4_init_output(&fl4, ipc.oif, sk->sk_mark, tos, |
564 | RT_SCOPE_UNIVERSE, | |
565 | inet->hdrincl ? IPPROTO_RAW : sk->sk_protocol, | |
566 | FLOWI_FLAG_CAN_SLEEP, daddr, saddr, 0, 0); | |
ef164ae3 | 567 | |
77968b78 DM |
568 | if (!inet->hdrincl) { |
569 | err = raw_probe_proto_opt(&fl4, msg); | |
570 | if (err) | |
b23dd4fe | 571 | goto done; |
77968b78 DM |
572 | } |
573 | ||
574 | security_sk_classify_flow(sk, flowi4_to_flowi(&fl4)); | |
575 | rt = ip_route_output_flow(sock_net(sk), &fl4, sk); | |
576 | if (IS_ERR(rt)) { | |
577 | err = PTR_ERR(rt); | |
578 | rt = NULL; | |
579 | goto done; | |
1da177e4 | 580 | } |
1da177e4 LT |
581 | |
582 | err = -EACCES; | |
583 | if (rt->rt_flags & RTCF_BROADCAST && !sock_flag(sk, SOCK_BROADCAST)) | |
584 | goto done; | |
585 | ||
586 | if (msg->msg_flags & MSG_CONFIRM) | |
587 | goto do_confirm; | |
588 | back_from_confirm: | |
589 | ||
590 | if (inet->hdrincl) | |
77968b78 DM |
591 | err = raw_send_hdrinc(sk, &fl4, msg->msg_iov, len, |
592 | &rt, msg->msg_flags); | |
e905a9ed | 593 | |
1da177e4 LT |
594 | else { |
595 | if (!ipc.addr) | |
77968b78 | 596 | ipc.addr = fl4.daddr; |
1da177e4 | 597 | lock_sock(sk); |
f5fca608 | 598 | err = ip_append_data(sk, &fl4, ip_generic_getfrag, |
77968b78 DM |
599 | msg->msg_iov, len, 0, |
600 | &ipc, &rt, msg->msg_flags); | |
1da177e4 LT |
601 | if (err) |
602 | ip_flush_pending_frames(sk); | |
6ce9e7b5 | 603 | else if (!(msg->msg_flags & MSG_MORE)) { |
77968b78 | 604 | err = ip_push_pending_frames(sk, &fl4); |
6ce9e7b5 ED |
605 | if (err == -ENOBUFS && !inet->recverr) |
606 | err = 0; | |
607 | } | |
1da177e4 LT |
608 | release_sock(sk); |
609 | } | |
610 | done: | |
611 | if (free) | |
612 | kfree(ipc.opt); | |
613 | ip_rt_put(rt); | |
614 | ||
5418c692 JJ |
615 | out: |
616 | if (err < 0) | |
617 | return err; | |
618 | return len; | |
1da177e4 LT |
619 | |
620 | do_confirm: | |
d8d1f30b | 621 | dst_confirm(&rt->dst); |
1da177e4 LT |
622 | if (!(msg->msg_flags & MSG_PROBE) || len) |
623 | goto back_from_confirm; | |
624 | err = 0; | |
625 | goto done; | |
626 | } | |
627 | ||
628 | static void raw_close(struct sock *sk, long timeout) | |
629 | { | |
e905a9ed | 630 | /* |
25985edc | 631 | * Raw sockets may have direct kernel references. Kill them. |
1da177e4 LT |
632 | */ |
633 | ip_ra_control(sk, 0, NULL); | |
634 | ||
635 | sk_common_release(sk); | |
636 | } | |
637 | ||
7d06b2e0 | 638 | static void raw_destroy(struct sock *sk) |
22dd4850 DL |
639 | { |
640 | lock_sock(sk); | |
641 | ip_flush_pending_frames(sk); | |
642 | release_sock(sk); | |
22dd4850 DL |
643 | } |
644 | ||
1da177e4 LT |
645 | /* This gets rid of all the nasties in af_inet. -DaveM */ |
646 | static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) | |
647 | { | |
648 | struct inet_sock *inet = inet_sk(sk); | |
649 | struct sockaddr_in *addr = (struct sockaddr_in *) uaddr; | |
650 | int ret = -EINVAL; | |
651 | int chk_addr_ret; | |
652 | ||
653 | if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_in)) | |
654 | goto out; | |
3b1e0a65 | 655 | chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr); |
1da177e4 LT |
656 | ret = -EADDRNOTAVAIL; |
657 | if (addr->sin_addr.s_addr && chk_addr_ret != RTN_LOCAL && | |
658 | chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST) | |
659 | goto out; | |
c720c7e8 | 660 | inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr; |
1da177e4 | 661 | if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST) |
c720c7e8 | 662 | inet->inet_saddr = 0; /* Use device */ |
1da177e4 LT |
663 | sk_dst_reset(sk); |
664 | ret = 0; | |
665 | out: return ret; | |
666 | } | |
667 | ||
668 | /* | |
669 | * This should be easy, if there is something there | |
670 | * we return it, otherwise we block. | |
671 | */ | |
672 | ||
673 | static int raw_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, | |
674 | size_t len, int noblock, int flags, int *addr_len) | |
675 | { | |
676 | struct inet_sock *inet = inet_sk(sk); | |
677 | size_t copied = 0; | |
678 | int err = -EOPNOTSUPP; | |
679 | struct sockaddr_in *sin = (struct sockaddr_in *)msg->msg_name; | |
680 | struct sk_buff *skb; | |
681 | ||
682 | if (flags & MSG_OOB) | |
683 | goto out; | |
684 | ||
685 | if (addr_len) | |
686 | *addr_len = sizeof(*sin); | |
687 | ||
688 | if (flags & MSG_ERRQUEUE) { | |
689 | err = ip_recv_error(sk, msg, len); | |
690 | goto out; | |
691 | } | |
692 | ||
693 | skb = skb_recv_datagram(sk, flags, noblock, &err); | |
694 | if (!skb) | |
695 | goto out; | |
696 | ||
697 | copied = skb->len; | |
698 | if (len < copied) { | |
699 | msg->msg_flags |= MSG_TRUNC; | |
700 | copied = len; | |
701 | } | |
702 | ||
703 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); | |
704 | if (err) | |
705 | goto done; | |
706 | ||
3b885787 | 707 | sock_recv_ts_and_drops(msg, sk, skb); |
1da177e4 LT |
708 | |
709 | /* Copy the address. */ | |
710 | if (sin) { | |
711 | sin->sin_family = AF_INET; | |
eddc9ec5 | 712 | sin->sin_addr.s_addr = ip_hdr(skb)->saddr; |
f59fc7f3 | 713 | sin->sin_port = 0; |
1da177e4 LT |
714 | memset(&sin->sin_zero, 0, sizeof(sin->sin_zero)); |
715 | } | |
716 | if (inet->cmsg_flags) | |
717 | ip_cmsg_recv(msg, skb); | |
718 | if (flags & MSG_TRUNC) | |
719 | copied = skb->len; | |
720 | done: | |
721 | skb_free_datagram(sk, skb); | |
5418c692 JJ |
722 | out: |
723 | if (err) | |
724 | return err; | |
725 | return copied; | |
1da177e4 LT |
726 | } |
727 | ||
728 | static int raw_init(struct sock *sk) | |
729 | { | |
730 | struct raw_sock *rp = raw_sk(sk); | |
731 | ||
c720c7e8 | 732 | if (inet_sk(sk)->inet_num == IPPROTO_ICMP) |
1da177e4 LT |
733 | memset(&rp->filter, 0, sizeof(rp->filter)); |
734 | return 0; | |
735 | } | |
736 | ||
737 | static int raw_seticmpfilter(struct sock *sk, char __user *optval, int optlen) | |
738 | { | |
739 | if (optlen > sizeof(struct icmp_filter)) | |
740 | optlen = sizeof(struct icmp_filter); | |
741 | if (copy_from_user(&raw_sk(sk)->filter, optval, optlen)) | |
742 | return -EFAULT; | |
743 | return 0; | |
744 | } | |
745 | ||
746 | static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *optlen) | |
747 | { | |
748 | int len, ret = -EFAULT; | |
749 | ||
750 | if (get_user(len, optlen)) | |
751 | goto out; | |
752 | ret = -EINVAL; | |
753 | if (len < 0) | |
754 | goto out; | |
755 | if (len > sizeof(struct icmp_filter)) | |
756 | len = sizeof(struct icmp_filter); | |
757 | ret = -EFAULT; | |
758 | if (put_user(len, optlen) || | |
759 | copy_to_user(optval, &raw_sk(sk)->filter, len)) | |
760 | goto out; | |
761 | ret = 0; | |
762 | out: return ret; | |
763 | } | |
764 | ||
3fdadf7d | 765 | static int do_raw_setsockopt(struct sock *sk, int level, int optname, |
b7058842 | 766 | char __user *optval, unsigned int optlen) |
1da177e4 | 767 | { |
1da177e4 | 768 | if (optname == ICMP_FILTER) { |
c720c7e8 | 769 | if (inet_sk(sk)->inet_num != IPPROTO_ICMP) |
1da177e4 LT |
770 | return -EOPNOTSUPP; |
771 | else | |
772 | return raw_seticmpfilter(sk, optval, optlen); | |
773 | } | |
774 | return -ENOPROTOOPT; | |
775 | } | |
776 | ||
3fdadf7d | 777 | static int raw_setsockopt(struct sock *sk, int level, int optname, |
b7058842 | 778 | char __user *optval, unsigned int optlen) |
1da177e4 LT |
779 | { |
780 | if (level != SOL_RAW) | |
3fdadf7d DM |
781 | return ip_setsockopt(sk, level, optname, optval, optlen); |
782 | return do_raw_setsockopt(sk, level, optname, optval, optlen); | |
783 | } | |
1da177e4 | 784 | |
3fdadf7d DM |
785 | #ifdef CONFIG_COMPAT |
786 | static int compat_raw_setsockopt(struct sock *sk, int level, int optname, | |
b7058842 | 787 | char __user *optval, unsigned int optlen) |
3fdadf7d DM |
788 | { |
789 | if (level != SOL_RAW) | |
543d9cfe | 790 | return compat_ip_setsockopt(sk, level, optname, optval, optlen); |
3fdadf7d DM |
791 | return do_raw_setsockopt(sk, level, optname, optval, optlen); |
792 | } | |
793 | #endif | |
794 | ||
795 | static int do_raw_getsockopt(struct sock *sk, int level, int optname, | |
796 | char __user *optval, int __user *optlen) | |
797 | { | |
1da177e4 | 798 | if (optname == ICMP_FILTER) { |
c720c7e8 | 799 | if (inet_sk(sk)->inet_num != IPPROTO_ICMP) |
1da177e4 LT |
800 | return -EOPNOTSUPP; |
801 | else | |
802 | return raw_geticmpfilter(sk, optval, optlen); | |
803 | } | |
804 | return -ENOPROTOOPT; | |
805 | } | |
806 | ||
3fdadf7d DM |
807 | static int raw_getsockopt(struct sock *sk, int level, int optname, |
808 | char __user *optval, int __user *optlen) | |
809 | { | |
810 | if (level != SOL_RAW) | |
811 | return ip_getsockopt(sk, level, optname, optval, optlen); | |
812 | return do_raw_getsockopt(sk, level, optname, optval, optlen); | |
813 | } | |
814 | ||
815 | #ifdef CONFIG_COMPAT | |
816 | static int compat_raw_getsockopt(struct sock *sk, int level, int optname, | |
543d9cfe | 817 | char __user *optval, int __user *optlen) |
3fdadf7d DM |
818 | { |
819 | if (level != SOL_RAW) | |
543d9cfe | 820 | return compat_ip_getsockopt(sk, level, optname, optval, optlen); |
3fdadf7d DM |
821 | return do_raw_getsockopt(sk, level, optname, optval, optlen); |
822 | } | |
823 | #endif | |
824 | ||
1da177e4 LT |
825 | static int raw_ioctl(struct sock *sk, int cmd, unsigned long arg) |
826 | { | |
827 | switch (cmd) { | |
828 | case SIOCOUTQ: { | |
31e6d363 ED |
829 | int amount = sk_wmem_alloc_get(sk); |
830 | ||
1da177e4 LT |
831 | return put_user(amount, (int __user *)arg); |
832 | } | |
833 | case SIOCINQ: { | |
834 | struct sk_buff *skb; | |
835 | int amount = 0; | |
836 | ||
e0f9f858 | 837 | spin_lock_bh(&sk->sk_receive_queue.lock); |
1da177e4 LT |
838 | skb = skb_peek(&sk->sk_receive_queue); |
839 | if (skb != NULL) | |
840 | amount = skb->len; | |
e0f9f858 | 841 | spin_unlock_bh(&sk->sk_receive_queue.lock); |
1da177e4 LT |
842 | return put_user(amount, (int __user *)arg); |
843 | } | |
844 | ||
845 | default: | |
846 | #ifdef CONFIG_IP_MROUTE | |
847 | return ipmr_ioctl(sk, cmd, (void __user *)arg); | |
848 | #else | |
849 | return -ENOIOCTLCMD; | |
850 | #endif | |
851 | } | |
852 | } | |
853 | ||
709b46e8 EB |
854 | #ifdef CONFIG_COMPAT |
855 | static int compat_raw_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg) | |
856 | { | |
857 | switch (cmd) { | |
858 | case SIOCOUTQ: | |
859 | case SIOCINQ: | |
860 | return -ENOIOCTLCMD; | |
861 | default: | |
862 | #ifdef CONFIG_IP_MROUTE | |
863 | return ipmr_compat_ioctl(sk, cmd, compat_ptr(arg)); | |
864 | #else | |
865 | return -ENOIOCTLCMD; | |
866 | #endif | |
867 | } | |
868 | } | |
869 | #endif | |
870 | ||
1da177e4 | 871 | struct proto raw_prot = { |
543d9cfe ACM |
872 | .name = "RAW", |
873 | .owner = THIS_MODULE, | |
874 | .close = raw_close, | |
22dd4850 | 875 | .destroy = raw_destroy, |
543d9cfe ACM |
876 | .connect = ip4_datagram_connect, |
877 | .disconnect = udp_disconnect, | |
878 | .ioctl = raw_ioctl, | |
879 | .init = raw_init, | |
880 | .setsockopt = raw_setsockopt, | |
881 | .getsockopt = raw_getsockopt, | |
882 | .sendmsg = raw_sendmsg, | |
883 | .recvmsg = raw_recvmsg, | |
884 | .bind = raw_bind, | |
885 | .backlog_rcv = raw_rcv_skb, | |
fc8717ba PE |
886 | .hash = raw_hash_sk, |
887 | .unhash = raw_unhash_sk, | |
543d9cfe | 888 | .obj_size = sizeof(struct raw_sock), |
fc8717ba | 889 | .h.raw_hash = &raw_v4_hashinfo, |
3fdadf7d | 890 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
891 | .compat_setsockopt = compat_raw_setsockopt, |
892 | .compat_getsockopt = compat_raw_getsockopt, | |
709b46e8 | 893 | .compat_ioctl = compat_raw_ioctl, |
3fdadf7d | 894 | #endif |
1da177e4 LT |
895 | }; |
896 | ||
897 | #ifdef CONFIG_PROC_FS | |
1da177e4 LT |
898 | static struct sock *raw_get_first(struct seq_file *seq) |
899 | { | |
900 | struct sock *sk; | |
5a5f3a8d | 901 | struct raw_iter_state *state = raw_seq_private(seq); |
1da177e4 | 902 | |
b673e4df PE |
903 | for (state->bucket = 0; state->bucket < RAW_HTABLE_SIZE; |
904 | ++state->bucket) { | |
1da177e4 LT |
905 | struct hlist_node *node; |
906 | ||
42a73808 | 907 | sk_for_each(sk, node, &state->h->ht[state->bucket]) |
1218854a | 908 | if (sock_net(sk) == seq_file_net(seq)) |
1da177e4 LT |
909 | goto found; |
910 | } | |
911 | sk = NULL; | |
912 | found: | |
913 | return sk; | |
914 | } | |
915 | ||
916 | static struct sock *raw_get_next(struct seq_file *seq, struct sock *sk) | |
917 | { | |
5a5f3a8d | 918 | struct raw_iter_state *state = raw_seq_private(seq); |
1da177e4 LT |
919 | |
920 | do { | |
921 | sk = sk_next(sk); | |
922 | try_again: | |
923 | ; | |
1218854a | 924 | } while (sk && sock_net(sk) != seq_file_net(seq)); |
1da177e4 | 925 | |
b673e4df | 926 | if (!sk && ++state->bucket < RAW_HTABLE_SIZE) { |
42a73808 | 927 | sk = sk_head(&state->h->ht[state->bucket]); |
1da177e4 LT |
928 | goto try_again; |
929 | } | |
930 | return sk; | |
931 | } | |
932 | ||
933 | static struct sock *raw_get_idx(struct seq_file *seq, loff_t pos) | |
934 | { | |
935 | struct sock *sk = raw_get_first(seq); | |
936 | ||
937 | if (sk) | |
938 | while (pos && (sk = raw_get_next(seq, sk)) != NULL) | |
939 | --pos; | |
940 | return pos ? NULL : sk; | |
941 | } | |
942 | ||
42a73808 | 943 | void *raw_seq_start(struct seq_file *seq, loff_t *pos) |
1da177e4 | 944 | { |
42a73808 PE |
945 | struct raw_iter_state *state = raw_seq_private(seq); |
946 | ||
947 | read_lock(&state->h->lock); | |
1da177e4 LT |
948 | return *pos ? raw_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; |
949 | } | |
42a73808 | 950 | EXPORT_SYMBOL_GPL(raw_seq_start); |
1da177e4 | 951 | |
42a73808 | 952 | void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
1da177e4 LT |
953 | { |
954 | struct sock *sk; | |
955 | ||
956 | if (v == SEQ_START_TOKEN) | |
957 | sk = raw_get_first(seq); | |
958 | else | |
959 | sk = raw_get_next(seq, v); | |
960 | ++*pos; | |
961 | return sk; | |
962 | } | |
42a73808 | 963 | EXPORT_SYMBOL_GPL(raw_seq_next); |
1da177e4 | 964 | |
42a73808 | 965 | void raw_seq_stop(struct seq_file *seq, void *v) |
1da177e4 | 966 | { |
42a73808 PE |
967 | struct raw_iter_state *state = raw_seq_private(seq); |
968 | ||
969 | read_unlock(&state->h->lock); | |
1da177e4 | 970 | } |
42a73808 | 971 | EXPORT_SYMBOL_GPL(raw_seq_stop); |
1da177e4 | 972 | |
8cd850ef | 973 | static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i) |
1da177e4 LT |
974 | { |
975 | struct inet_sock *inet = inet_sk(sp); | |
c720c7e8 ED |
976 | __be32 dest = inet->inet_daddr, |
977 | src = inet->inet_rcv_saddr; | |
1da177e4 | 978 | __u16 destp = 0, |
c720c7e8 | 979 | srcp = inet->inet_num; |
1da177e4 | 980 | |
8cd850ef | 981 | seq_printf(seq, "%4d: %08X:%04X %08X:%04X" |
68be802c | 982 | " %02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d\n", |
e905a9ed | 983 | i, src, srcp, dest, destp, sp->sk_state, |
31e6d363 ED |
984 | sk_wmem_alloc_get(sp), |
985 | sk_rmem_alloc_get(sp), | |
1da177e4 | 986 | 0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp), |
33c732c3 | 987 | atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops)); |
1da177e4 LT |
988 | } |
989 | ||
990 | static int raw_seq_show(struct seq_file *seq, void *v) | |
991 | { | |
1da177e4 | 992 | if (v == SEQ_START_TOKEN) |
8cd850ef DL |
993 | seq_printf(seq, " sl local_address rem_address st tx_queue " |
994 | "rx_queue tr tm->when retrnsmt uid timeout " | |
cb61cb9b | 995 | "inode ref pointer drops\n"); |
8cd850ef DL |
996 | else |
997 | raw_sock_seq_show(seq, v, raw_seq_private(seq)->bucket); | |
1da177e4 LT |
998 | return 0; |
999 | } | |
1000 | ||
f690808e | 1001 | static const struct seq_operations raw_seq_ops = { |
1da177e4 LT |
1002 | .start = raw_seq_start, |
1003 | .next = raw_seq_next, | |
1004 | .stop = raw_seq_stop, | |
1005 | .show = raw_seq_show, | |
1006 | }; | |
1007 | ||
3046d767 DL |
1008 | int raw_seq_open(struct inode *ino, struct file *file, |
1009 | struct raw_hashinfo *h, const struct seq_operations *ops) | |
1da177e4 | 1010 | { |
f51d599f | 1011 | int err; |
42a73808 PE |
1012 | struct raw_iter_state *i; |
1013 | ||
3046d767 | 1014 | err = seq_open_net(ino, file, ops, sizeof(struct raw_iter_state)); |
f51d599f PE |
1015 | if (err < 0) |
1016 | return err; | |
42a73808 | 1017 | |
f51d599f | 1018 | i = raw_seq_private((struct seq_file *)file->private_data); |
42a73808 | 1019 | i->h = h; |
42a73808 PE |
1020 | return 0; |
1021 | } | |
1022 | EXPORT_SYMBOL_GPL(raw_seq_open); | |
1023 | ||
1024 | static int raw_v4_seq_open(struct inode *inode, struct file *file) | |
1025 | { | |
3046d767 | 1026 | return raw_seq_open(inode, file, &raw_v4_hashinfo, &raw_seq_ops); |
1da177e4 LT |
1027 | } |
1028 | ||
9a32144e | 1029 | static const struct file_operations raw_seq_fops = { |
1da177e4 | 1030 | .owner = THIS_MODULE, |
42a73808 | 1031 | .open = raw_v4_seq_open, |
1da177e4 LT |
1032 | .read = seq_read, |
1033 | .llseek = seq_lseek, | |
f51d599f | 1034 | .release = seq_release_net, |
1da177e4 LT |
1035 | }; |
1036 | ||
a308da16 | 1037 | static __net_init int raw_init_net(struct net *net) |
1da177e4 | 1038 | { |
a308da16 | 1039 | if (!proc_net_fops_create(net, "raw", S_IRUGO, &raw_seq_fops)) |
1da177e4 | 1040 | return -ENOMEM; |
a308da16 | 1041 | |
1da177e4 LT |
1042 | return 0; |
1043 | } | |
1044 | ||
a308da16 PE |
1045 | static __net_exit void raw_exit_net(struct net *net) |
1046 | { | |
1047 | proc_net_remove(net, "raw"); | |
1048 | } | |
1049 | ||
1050 | static __net_initdata struct pernet_operations raw_net_ops = { | |
1051 | .init = raw_init_net, | |
1052 | .exit = raw_exit_net, | |
1053 | }; | |
1054 | ||
1055 | int __init raw_proc_init(void) | |
1056 | { | |
1057 | return register_pernet_subsys(&raw_net_ops); | |
1058 | } | |
1059 | ||
1da177e4 LT |
1060 | void __init raw_proc_exit(void) |
1061 | { | |
a308da16 | 1062 | unregister_pernet_subsys(&raw_net_ops); |
1da177e4 LT |
1063 | } |
1064 | #endif /* CONFIG_PROC_FS */ |