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> |
c008ba5b HX |
82 | #include <linux/uio.h> |
83 | ||
84 | struct raw_frag_vec { | |
b61e9dcc | 85 | struct msghdr *msg; |
c008ba5b HX |
86 | union { |
87 | struct icmphdr icmph; | |
88 | char c[1]; | |
89 | } hdr; | |
90 | int hlen; | |
91 | }; | |
1da177e4 | 92 | |
b673e4df | 93 | static struct raw_hashinfo raw_v4_hashinfo = { |
938b93ad | 94 | .lock = __RW_LOCK_UNLOCKED(raw_v4_hashinfo.lock), |
b673e4df | 95 | }; |
1da177e4 | 96 | |
fc8717ba | 97 | void raw_hash_sk(struct sock *sk) |
1da177e4 | 98 | { |
fc8717ba | 99 | struct raw_hashinfo *h = sk->sk_prot->h.raw_hash; |
65b4c50b | 100 | struct hlist_head *head; |
1da177e4 | 101 | |
c720c7e8 | 102 | head = &h->ht[inet_sk(sk)->inet_num & (RAW_HTABLE_SIZE - 1)]; |
65b4c50b PE |
103 | |
104 | write_lock_bh(&h->lock); | |
1da177e4 | 105 | sk_add_node(sk, head); |
c29a0bc4 | 106 | sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1); |
65b4c50b PE |
107 | write_unlock_bh(&h->lock); |
108 | } | |
109 | EXPORT_SYMBOL_GPL(raw_hash_sk); | |
110 | ||
fc8717ba | 111 | void raw_unhash_sk(struct sock *sk) |
ab70768e | 112 | { |
fc8717ba PE |
113 | struct raw_hashinfo *h = sk->sk_prot->h.raw_hash; |
114 | ||
ab70768e PE |
115 | write_lock_bh(&h->lock); |
116 | if (sk_del_node_init(sk)) | |
c29a0bc4 | 117 | sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1); |
ab70768e PE |
118 | write_unlock_bh(&h->lock); |
119 | } | |
120 | EXPORT_SYMBOL_GPL(raw_unhash_sk); | |
121 | ||
be185884 PE |
122 | static struct sock *__raw_v4_lookup(struct net *net, struct sock *sk, |
123 | unsigned short num, __be32 raddr, __be32 laddr, int dif) | |
1da177e4 | 124 | { |
b67bfe0d | 125 | sk_for_each_from(sk) { |
1da177e4 LT |
126 | struct inet_sock *inet = inet_sk(sk); |
127 | ||
c720c7e8 ED |
128 | if (net_eq(sock_net(sk), net) && inet->inet_num == num && |
129 | !(inet->inet_daddr && inet->inet_daddr != raddr) && | |
130 | !(inet->inet_rcv_saddr && inet->inet_rcv_saddr != laddr) && | |
1da177e4 LT |
131 | !(sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)) |
132 | goto found; /* gotcha */ | |
133 | } | |
134 | sk = NULL; | |
135 | found: | |
136 | return sk; | |
137 | } | |
138 | ||
139 | /* | |
140 | * 0 - deliver | |
141 | * 1 - block | |
142 | */ | |
ab43ed8b | 143 | static int icmp_filter(const struct sock *sk, const struct sk_buff *skb) |
1da177e4 | 144 | { |
ab43ed8b ED |
145 | struct icmphdr _hdr; |
146 | const struct icmphdr *hdr; | |
1da177e4 | 147 | |
ab43ed8b ED |
148 | hdr = skb_header_pointer(skb, skb_transport_offset(skb), |
149 | sizeof(_hdr), &_hdr); | |
150 | if (!hdr) | |
1da177e4 LT |
151 | return 1; |
152 | ||
ab43ed8b | 153 | if (hdr->type < 32) { |
1da177e4 LT |
154 | __u32 data = raw_sk(sk)->filter.data; |
155 | ||
ab43ed8b | 156 | return ((1U << hdr->type) & data) != 0; |
1da177e4 LT |
157 | } |
158 | ||
159 | /* Do not block unknown ICMP types */ | |
160 | return 0; | |
161 | } | |
162 | ||
163 | /* IP input processing comes here for RAW socket delivery. | |
164 | * Caller owns SKB, so we must make clones. | |
165 | * | |
166 | * RFC 1122: SHOULD pass TOS value up to the transport layer. | |
167 | * -> It does. And not only TOS, but all IP header. | |
168 | */ | |
b71d1d42 | 169 | static int raw_v4_input(struct sk_buff *skb, const struct iphdr *iph, int hash) |
1da177e4 LT |
170 | { |
171 | struct sock *sk; | |
172 | struct hlist_head *head; | |
d13964f4 | 173 | int delivered = 0; |
be185884 | 174 | struct net *net; |
1da177e4 | 175 | |
b673e4df PE |
176 | read_lock(&raw_v4_hashinfo.lock); |
177 | head = &raw_v4_hashinfo.ht[hash]; | |
1da177e4 LT |
178 | if (hlist_empty(head)) |
179 | goto out; | |
be185884 | 180 | |
c346dca1 | 181 | net = dev_net(skb->dev); |
be185884 | 182 | sk = __raw_v4_lookup(net, __sk_head(head), iph->protocol, |
1da177e4 LT |
183 | iph->saddr, iph->daddr, |
184 | skb->dev->ifindex); | |
185 | ||
186 | while (sk) { | |
d13964f4 | 187 | delivered = 1; |
f5220d63 QA |
188 | if ((iph->protocol != IPPROTO_ICMP || !icmp_filter(sk, skb)) && |
189 | ip_mc_sf_allow(sk, iph->daddr, iph->saddr, | |
190 | skb->dev->ifindex)) { | |
1da177e4 LT |
191 | struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC); |
192 | ||
193 | /* Not releasing hash table! */ | |
194 | if (clone) | |
195 | raw_rcv(sk, clone); | |
196 | } | |
be185884 | 197 | sk = __raw_v4_lookup(net, sk_next(sk), iph->protocol, |
1da177e4 LT |
198 | iph->saddr, iph->daddr, |
199 | skb->dev->ifindex); | |
200 | } | |
201 | out: | |
b673e4df | 202 | read_unlock(&raw_v4_hashinfo.lock); |
d13964f4 | 203 | return delivered; |
1da177e4 LT |
204 | } |
205 | ||
7bc54c90 PE |
206 | int raw_local_deliver(struct sk_buff *skb, int protocol) |
207 | { | |
208 | int hash; | |
209 | struct sock *raw_sk; | |
210 | ||
b673e4df PE |
211 | hash = protocol & (RAW_HTABLE_SIZE - 1); |
212 | raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]); | |
7bc54c90 PE |
213 | |
214 | /* If there maybe a raw socket we must check - if not we | |
215 | * don't care less | |
216 | */ | |
217 | if (raw_sk && !raw_v4_input(skb, ip_hdr(skb), hash)) | |
218 | raw_sk = NULL; | |
219 | ||
220 | return raw_sk != NULL; | |
221 | ||
222 | } | |
223 | ||
224 | static void raw_err(struct sock *sk, struct sk_buff *skb, u32 info) | |
1da177e4 LT |
225 | { |
226 | struct inet_sock *inet = inet_sk(sk); | |
88c7664f ACM |
227 | const int type = icmp_hdr(skb)->type; |
228 | const int code = icmp_hdr(skb)->code; | |
1da177e4 LT |
229 | int err = 0; |
230 | int harderr = 0; | |
231 | ||
36393395 DM |
232 | if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) |
233 | ipv4_sk_update_pmtu(skb, sk, info); | |
8d65b119 | 234 | else if (type == ICMP_REDIRECT) { |
55be7a9c | 235 | ipv4_sk_redirect(skb, sk); |
8d65b119 DJ |
236 | return; |
237 | } | |
36393395 | 238 | |
1da177e4 LT |
239 | /* Report error on raw socket, if: |
240 | 1. User requested ip_recverr. | |
241 | 2. Socket is connected (otherwise the error indication | |
242 | is useless without ip_recverr and error is hard. | |
243 | */ | |
244 | if (!inet->recverr && sk->sk_state != TCP_ESTABLISHED) | |
245 | return; | |
246 | ||
247 | switch (type) { | |
248 | default: | |
249 | case ICMP_TIME_EXCEEDED: | |
250 | err = EHOSTUNREACH; | |
251 | break; | |
252 | case ICMP_SOURCE_QUENCH: | |
253 | return; | |
254 | case ICMP_PARAMETERPROB: | |
255 | err = EPROTO; | |
256 | harderr = 1; | |
257 | break; | |
258 | case ICMP_DEST_UNREACH: | |
259 | err = EHOSTUNREACH; | |
260 | if (code > NR_ICMP_UNREACH) | |
261 | break; | |
262 | err = icmp_err_convert[code].errno; | |
263 | harderr = icmp_err_convert[code].fatal; | |
264 | if (code == ICMP_FRAG_NEEDED) { | |
265 | harderr = inet->pmtudisc != IP_PMTUDISC_DONT; | |
266 | err = EMSGSIZE; | |
267 | } | |
268 | } | |
269 | ||
270 | if (inet->recverr) { | |
b71d1d42 | 271 | const struct iphdr *iph = (const struct iphdr *)skb->data; |
1da177e4 LT |
272 | u8 *payload = skb->data + (iph->ihl << 2); |
273 | ||
274 | if (inet->hdrincl) | |
275 | payload = skb->data; | |
276 | ip_icmp_error(sk, skb, err, 0, info, payload); | |
277 | } | |
278 | ||
279 | if (inet->recverr || harderr) { | |
280 | sk->sk_err = err; | |
281 | sk->sk_error_report(sk); | |
282 | } | |
283 | } | |
284 | ||
7bc54c90 PE |
285 | void raw_icmp_error(struct sk_buff *skb, int protocol, u32 info) |
286 | { | |
287 | int hash; | |
288 | struct sock *raw_sk; | |
b71d1d42 | 289 | const struct iphdr *iph; |
be185884 | 290 | struct net *net; |
7bc54c90 | 291 | |
b673e4df | 292 | hash = protocol & (RAW_HTABLE_SIZE - 1); |
7bc54c90 | 293 | |
b673e4df PE |
294 | read_lock(&raw_v4_hashinfo.lock); |
295 | raw_sk = sk_head(&raw_v4_hashinfo.ht[hash]); | |
7bc54c90 | 296 | if (raw_sk != NULL) { |
b71d1d42 | 297 | iph = (const struct iphdr *)skb->data; |
c346dca1 | 298 | net = dev_net(skb->dev); |
be185884 PE |
299 | |
300 | while ((raw_sk = __raw_v4_lookup(net, raw_sk, protocol, | |
301 | iph->daddr, iph->saddr, | |
7bc54c90 PE |
302 | skb->dev->ifindex)) != NULL) { |
303 | raw_err(raw_sk, skb, info); | |
304 | raw_sk = sk_next(raw_sk); | |
b71d1d42 | 305 | iph = (const struct iphdr *)skb->data; |
7bc54c90 PE |
306 | } |
307 | } | |
b673e4df | 308 | read_unlock(&raw_v4_hashinfo.lock); |
7bc54c90 PE |
309 | } |
310 | ||
5e73ea1a | 311 | static int raw_rcv_skb(struct sock *sk, struct sk_buff *skb) |
1da177e4 LT |
312 | { |
313 | /* Charge it to the socket. */ | |
e905a9ed | 314 | |
fbf8866d | 315 | ipv4_pktinfo_prepare(sk, skb); |
d826eb14 | 316 | if (sock_queue_rcv_skb(sk, skb) < 0) { |
1da177e4 LT |
317 | kfree_skb(skb); |
318 | return NET_RX_DROP; | |
319 | } | |
320 | ||
321 | return NET_RX_SUCCESS; | |
322 | } | |
323 | ||
324 | int raw_rcv(struct sock *sk, struct sk_buff *skb) | |
325 | { | |
326 | if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) { | |
33c732c3 | 327 | atomic_inc(&sk->sk_drops); |
1da177e4 LT |
328 | kfree_skb(skb); |
329 | return NET_RX_DROP; | |
330 | } | |
b59c2701 | 331 | nf_reset(skb); |
1da177e4 | 332 | |
d56f90a7 | 333 | skb_push(skb, skb->data - skb_network_header(skb)); |
1da177e4 LT |
334 | |
335 | raw_rcv_skb(sk, skb); | |
336 | return 0; | |
337 | } | |
338 | ||
77968b78 DM |
339 | static int raw_send_hdrinc(struct sock *sk, struct flowi4 *fl4, |
340 | void *from, size_t length, | |
341 | struct rtable **rtp, | |
342 | unsigned int flags) | |
1da177e4 LT |
343 | { |
344 | struct inet_sock *inet = inet_sk(sk); | |
0388b004 | 345 | struct net *net = sock_net(sk); |
1da177e4 LT |
346 | struct iphdr *iph; |
347 | struct sk_buff *skb; | |
f844c74f | 348 | unsigned int iphlen; |
1da177e4 | 349 | int err; |
1789a640 | 350 | struct rtable *rt = *rtp; |
66088243 | 351 | int hlen, tlen; |
1da177e4 | 352 | |
d8d1f30b | 353 | if (length > rt->dst.dev->mtu) { |
77968b78 | 354 | ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport, |
d8d1f30b | 355 | rt->dst.dev->mtu); |
1da177e4 LT |
356 | return -EMSGSIZE; |
357 | } | |
358 | if (flags&MSG_PROBE) | |
359 | goto out; | |
360 | ||
66088243 HX |
361 | hlen = LL_RESERVED_SPACE(rt->dst.dev); |
362 | tlen = rt->dst.dev->needed_tailroom; | |
f5184d26 | 363 | skb = sock_alloc_send_skb(sk, |
66088243 | 364 | length + hlen + tlen + 15, |
f5184d26 | 365 | flags & MSG_DONTWAIT, &err); |
1da177e4 | 366 | if (skb == NULL) |
e905a9ed | 367 | goto error; |
66088243 | 368 | skb_reserve(skb, hlen); |
1da177e4 LT |
369 | |
370 | skb->priority = sk->sk_priority; | |
4a19ec58 | 371 | skb->mark = sk->sk_mark; |
d8d1f30b | 372 | skb_dst_set(skb, &rt->dst); |
1789a640 | 373 | *rtp = NULL; |
1da177e4 | 374 | |
7e28ecc2 | 375 | skb_reset_network_header(skb); |
eddc9ec5 | 376 | iph = ip_hdr(skb); |
7e28ecc2 | 377 | skb_put(skb, length); |
1da177e4 LT |
378 | |
379 | skb->ip_summed = CHECKSUM_NONE; | |
380 | ||
11878b40 WB |
381 | sock_tx_timestamp(sk, &skb_shinfo(skb)->tx_flags); |
382 | ||
b0e380b1 | 383 | skb->transport_header = skb->network_header; |
55888dfb NH |
384 | err = -EFAULT; |
385 | if (memcpy_fromiovecend((void *)iph, from, 0, length)) | |
386 | goto error_free; | |
1da177e4 | 387 | |
f844c74f | 388 | iphlen = iph->ihl * 4; |
55888dfb NH |
389 | |
390 | /* | |
391 | * We don't want to modify the ip header, but we do need to | |
392 | * be sure that it won't cause problems later along the network | |
393 | * stack. Specifically we want to make sure that iph->ihl is a | |
394 | * sane value. If ihl points beyond the length of the buffer passed | |
395 | * in, reject the frame as invalid | |
396 | */ | |
397 | err = -EINVAL; | |
398 | if (iphlen > length) | |
399 | goto error_free; | |
400 | ||
401 | if (iphlen >= sizeof(*iph)) { | |
1da177e4 | 402 | if (!iph->saddr) |
77968b78 | 403 | iph->saddr = fl4->saddr; |
1da177e4 LT |
404 | iph->check = 0; |
405 | iph->tot_len = htons(length); | |
406 | if (!iph->id) | |
73f156a6 | 407 | ip_select_ident(skb, NULL); |
1da177e4 LT |
408 | |
409 | iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); | |
410 | } | |
96793b48 | 411 | if (iph->protocol == IPPROTO_ICMP) |
0388b004 | 412 | icmp_out_count(net, ((struct icmphdr *) |
96793b48 | 413 | skb_transport_header(skb))->type); |
1da177e4 | 414 | |
9bbc768a | 415 | err = NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_OUT, skb, NULL, |
d8d1f30b | 416 | rt->dst.dev, dst_output); |
1da177e4 | 417 | if (err > 0) |
6ce9e7b5 | 418 | err = net_xmit_errno(err); |
1da177e4 LT |
419 | if (err) |
420 | goto error; | |
421 | out: | |
422 | return 0; | |
423 | ||
55888dfb | 424 | error_free: |
1da177e4 LT |
425 | kfree_skb(skb); |
426 | error: | |
5e38e270 | 427 | IP_INC_STATS(net, IPSTATS_MIB_OUTDISCARDS); |
6ce9e7b5 ED |
428 | if (err == -ENOBUFS && !inet->recverr) |
429 | err = 0; | |
e905a9ed | 430 | return err; |
1da177e4 LT |
431 | } |
432 | ||
c008ba5b | 433 | static int raw_probe_proto_opt(struct raw_frag_vec *rfv, struct flowi4 *fl4) |
1da177e4 | 434 | { |
32b5913a | 435 | int err; |
1da177e4 | 436 | |
32b5913a | 437 | if (fl4->flowi4_proto != IPPROTO_ICMP) |
a27b58fe | 438 | return 0; |
1da177e4 | 439 | |
32b5913a | 440 | /* We only need the first two bytes. */ |
c008ba5b HX |
441 | rfv->hlen = 2; |
442 | ||
b61e9dcc | 443 | err = memcpy_from_msg(rfv->hdr.c, rfv->msg, rfv->hlen); |
32b5913a HX |
444 | if (err) |
445 | return err; | |
446 | ||
c008ba5b HX |
447 | fl4->fl4_icmp_type = rfv->hdr.icmph.type; |
448 | fl4->fl4_icmp_code = rfv->hdr.icmph.code; | |
32b5913a | 449 | |
a27b58fe | 450 | return 0; |
1da177e4 LT |
451 | } |
452 | ||
c008ba5b HX |
453 | static int raw_getfrag(void *from, char *to, int offset, int len, int odd, |
454 | struct sk_buff *skb) | |
455 | { | |
456 | struct raw_frag_vec *rfv = from; | |
457 | ||
458 | if (offset < rfv->hlen) { | |
459 | int copy = min(rfv->hlen - offset, len); | |
460 | ||
461 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
462 | memcpy(to, rfv->hdr.c + offset, copy); | |
463 | else | |
464 | skb->csum = csum_block_add( | |
465 | skb->csum, | |
466 | csum_partial_copy_nocheck(rfv->hdr.c + offset, | |
467 | to, copy, 0), | |
468 | odd); | |
469 | ||
470 | odd = 0; | |
471 | offset += copy; | |
472 | to += copy; | |
473 | len -= copy; | |
474 | ||
475 | if (!len) | |
476 | return 0; | |
477 | } | |
478 | ||
479 | offset -= rfv->hlen; | |
480 | ||
b61e9dcc | 481 | return ip_generic_getfrag(rfv->msg->msg_iov, to, offset, len, odd, skb); |
c008ba5b HX |
482 | } |
483 | ||
1da177e4 LT |
484 | static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, |
485 | size_t len) | |
486 | { | |
487 | struct inet_sock *inet = inet_sk(sk); | |
488 | struct ipcm_cookie ipc; | |
489 | struct rtable *rt = NULL; | |
77968b78 | 490 | struct flowi4 fl4; |
1da177e4 | 491 | int free = 0; |
3ca3c68e | 492 | __be32 daddr; |
c1d18f9f | 493 | __be32 saddr; |
1da177e4 LT |
494 | u8 tos; |
495 | int err; | |
f6d8bd05 | 496 | struct ip_options_data opt_copy; |
c008ba5b | 497 | struct raw_frag_vec rfv; |
1da177e4 LT |
498 | |
499 | err = -EMSGSIZE; | |
926d4b81 | 500 | if (len > 0xFFFF) |
1da177e4 LT |
501 | goto out; |
502 | ||
503 | /* | |
504 | * Check the flags. | |
505 | */ | |
506 | ||
507 | err = -EOPNOTSUPP; | |
508 | if (msg->msg_flags & MSG_OOB) /* Mirror BSD error message */ | |
509 | goto out; /* compatibility */ | |
e905a9ed | 510 | |
1da177e4 | 511 | /* |
e905a9ed | 512 | * Get and verify the address. |
1da177e4 LT |
513 | */ |
514 | ||
515 | if (msg->msg_namelen) { | |
342dfc30 | 516 | DECLARE_SOCKADDR(struct sockaddr_in *, usin, msg->msg_name); |
1da177e4 LT |
517 | err = -EINVAL; |
518 | if (msg->msg_namelen < sizeof(*usin)) | |
519 | goto out; | |
520 | if (usin->sin_family != AF_INET) { | |
058bd4d2 JP |
521 | pr_info_once("%s: %s forgot to set AF_INET. Fix it!\n", |
522 | __func__, current->comm); | |
1da177e4 LT |
523 | err = -EAFNOSUPPORT; |
524 | if (usin->sin_family) | |
525 | goto out; | |
526 | } | |
527 | daddr = usin->sin_addr.s_addr; | |
528 | /* ANK: I did not forget to get protocol from port field. | |
529 | * I just do not know, who uses this weirdness. | |
530 | * IP_HDRINCL is much more convenient. | |
531 | */ | |
532 | } else { | |
533 | err = -EDESTADDRREQ; | |
e905a9ed | 534 | if (sk->sk_state != TCP_ESTABLISHED) |
1da177e4 | 535 | goto out; |
c720c7e8 | 536 | daddr = inet->inet_daddr; |
1da177e4 LT |
537 | } |
538 | ||
c720c7e8 | 539 | ipc.addr = inet->inet_saddr; |
1da177e4 | 540 | ipc.opt = NULL; |
2244d07b | 541 | ipc.tx_flags = 0; |
aa661581 FF |
542 | ipc.ttl = 0; |
543 | ipc.tos = -1; | |
1da177e4 LT |
544 | ipc.oif = sk->sk_bound_dev_if; |
545 | ||
546 | if (msg->msg_controllen) { | |
c8e6ad08 | 547 | err = ip_cmsg_send(sock_net(sk), msg, &ipc, false); |
1da177e4 LT |
548 | if (err) |
549 | goto out; | |
550 | if (ipc.opt) | |
551 | free = 1; | |
552 | } | |
553 | ||
554 | saddr = ipc.addr; | |
555 | ipc.addr = daddr; | |
556 | ||
f6d8bd05 ED |
557 | if (!ipc.opt) { |
558 | struct ip_options_rcu *inet_opt; | |
559 | ||
560 | rcu_read_lock(); | |
561 | inet_opt = rcu_dereference(inet->inet_opt); | |
562 | if (inet_opt) { | |
563 | memcpy(&opt_copy, inet_opt, | |
564 | sizeof(*inet_opt) + inet_opt->opt.optlen); | |
565 | ipc.opt = &opt_copy.opt; | |
566 | } | |
567 | rcu_read_unlock(); | |
568 | } | |
1da177e4 LT |
569 | |
570 | if (ipc.opt) { | |
571 | err = -EINVAL; | |
572 | /* Linux does not mangle headers on raw sockets, | |
573 | * so that IP options + IP_HDRINCL is non-sense. | |
574 | */ | |
575 | if (inet->hdrincl) | |
576 | goto done; | |
f6d8bd05 | 577 | if (ipc.opt->opt.srr) { |
1da177e4 LT |
578 | if (!daddr) |
579 | goto done; | |
f6d8bd05 | 580 | daddr = ipc.opt->opt.faddr; |
1da177e4 LT |
581 | } |
582 | } | |
aa661581 | 583 | tos = get_rtconn_flags(&ipc, sk); |
1da177e4 LT |
584 | if (msg->msg_flags & MSG_DONTROUTE) |
585 | tos |= RTO_ONLINK; | |
586 | ||
f97c1e0c | 587 | if (ipv4_is_multicast(daddr)) { |
1da177e4 LT |
588 | if (!ipc.oif) |
589 | ipc.oif = inet->mc_index; | |
590 | if (!saddr) | |
591 | saddr = inet->mc_addr; | |
76e21053 EH |
592 | } else if (!ipc.oif) |
593 | ipc.oif = inet->uc_index; | |
1da177e4 | 594 | |
77968b78 DM |
595 | flowi4_init_output(&fl4, ipc.oif, sk->sk_mark, tos, |
596 | RT_SCOPE_UNIVERSE, | |
597 | inet->hdrincl ? IPPROTO_RAW : sk->sk_protocol, | |
0e0d44ab | 598 | inet_sk_flowi_flags(sk) | |
c27c9322 | 599 | (inet->hdrincl ? FLOWI_FLAG_KNOWN_NH : 0), |
47670b76 | 600 | daddr, saddr, 0, 0); |
ef164ae3 | 601 | |
77968b78 | 602 | if (!inet->hdrincl) { |
b61e9dcc | 603 | rfv.msg = msg; |
c008ba5b HX |
604 | rfv.hlen = 0; |
605 | ||
606 | err = raw_probe_proto_opt(&rfv, &fl4); | |
77968b78 | 607 | if (err) |
b23dd4fe | 608 | goto done; |
77968b78 DM |
609 | } |
610 | ||
611 | security_sk_classify_flow(sk, flowi4_to_flowi(&fl4)); | |
612 | rt = ip_route_output_flow(sock_net(sk), &fl4, sk); | |
613 | if (IS_ERR(rt)) { | |
614 | err = PTR_ERR(rt); | |
615 | rt = NULL; | |
616 | goto done; | |
1da177e4 | 617 | } |
1da177e4 LT |
618 | |
619 | err = -EACCES; | |
620 | if (rt->rt_flags & RTCF_BROADCAST && !sock_flag(sk, SOCK_BROADCAST)) | |
621 | goto done; | |
622 | ||
623 | if (msg->msg_flags & MSG_CONFIRM) | |
624 | goto do_confirm; | |
625 | back_from_confirm: | |
626 | ||
627 | if (inet->hdrincl) | |
77968b78 DM |
628 | err = raw_send_hdrinc(sk, &fl4, msg->msg_iov, len, |
629 | &rt, msg->msg_flags); | |
e905a9ed | 630 | |
1da177e4 | 631 | else { |
11878b40 WB |
632 | sock_tx_timestamp(sk, &ipc.tx_flags); |
633 | ||
1da177e4 | 634 | if (!ipc.addr) |
77968b78 | 635 | ipc.addr = fl4.daddr; |
1da177e4 | 636 | lock_sock(sk); |
c008ba5b HX |
637 | err = ip_append_data(sk, &fl4, raw_getfrag, |
638 | &rfv, len, 0, | |
77968b78 | 639 | &ipc, &rt, msg->msg_flags); |
1da177e4 LT |
640 | if (err) |
641 | ip_flush_pending_frames(sk); | |
6ce9e7b5 | 642 | else if (!(msg->msg_flags & MSG_MORE)) { |
77968b78 | 643 | err = ip_push_pending_frames(sk, &fl4); |
6ce9e7b5 ED |
644 | if (err == -ENOBUFS && !inet->recverr) |
645 | err = 0; | |
646 | } | |
1da177e4 LT |
647 | release_sock(sk); |
648 | } | |
649 | done: | |
650 | if (free) | |
651 | kfree(ipc.opt); | |
652 | ip_rt_put(rt); | |
653 | ||
5418c692 JJ |
654 | out: |
655 | if (err < 0) | |
656 | return err; | |
657 | return len; | |
1da177e4 LT |
658 | |
659 | do_confirm: | |
d8d1f30b | 660 | dst_confirm(&rt->dst); |
1da177e4 LT |
661 | if (!(msg->msg_flags & MSG_PROBE) || len) |
662 | goto back_from_confirm; | |
663 | err = 0; | |
664 | goto done; | |
665 | } | |
666 | ||
667 | static void raw_close(struct sock *sk, long timeout) | |
668 | { | |
e905a9ed | 669 | /* |
25985edc | 670 | * Raw sockets may have direct kernel references. Kill them. |
1da177e4 LT |
671 | */ |
672 | ip_ra_control(sk, 0, NULL); | |
673 | ||
674 | sk_common_release(sk); | |
675 | } | |
676 | ||
7d06b2e0 | 677 | static void raw_destroy(struct sock *sk) |
22dd4850 DL |
678 | { |
679 | lock_sock(sk); | |
680 | ip_flush_pending_frames(sk); | |
681 | release_sock(sk); | |
22dd4850 DL |
682 | } |
683 | ||
1da177e4 LT |
684 | /* This gets rid of all the nasties in af_inet. -DaveM */ |
685 | static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) | |
686 | { | |
687 | struct inet_sock *inet = inet_sk(sk); | |
688 | struct sockaddr_in *addr = (struct sockaddr_in *) uaddr; | |
689 | int ret = -EINVAL; | |
690 | int chk_addr_ret; | |
691 | ||
692 | if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_in)) | |
693 | goto out; | |
3b1e0a65 | 694 | chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr); |
1da177e4 LT |
695 | ret = -EADDRNOTAVAIL; |
696 | if (addr->sin_addr.s_addr && chk_addr_ret != RTN_LOCAL && | |
697 | chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST) | |
698 | goto out; | |
c720c7e8 | 699 | inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr; |
1da177e4 | 700 | if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST) |
c720c7e8 | 701 | inet->inet_saddr = 0; /* Use device */ |
1da177e4 LT |
702 | sk_dst_reset(sk); |
703 | ret = 0; | |
704 | out: return ret; | |
705 | } | |
706 | ||
707 | /* | |
708 | * This should be easy, if there is something there | |
709 | * we return it, otherwise we block. | |
710 | */ | |
711 | ||
712 | static int raw_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, | |
713 | size_t len, int noblock, int flags, int *addr_len) | |
714 | { | |
715 | struct inet_sock *inet = inet_sk(sk); | |
716 | size_t copied = 0; | |
717 | int err = -EOPNOTSUPP; | |
342dfc30 | 718 | DECLARE_SOCKADDR(struct sockaddr_in *, sin, msg->msg_name); |
1da177e4 LT |
719 | struct sk_buff *skb; |
720 | ||
721 | if (flags & MSG_OOB) | |
722 | goto out; | |
723 | ||
1da177e4 | 724 | if (flags & MSG_ERRQUEUE) { |
85fbaa75 | 725 | err = ip_recv_error(sk, msg, len, addr_len); |
1da177e4 LT |
726 | goto out; |
727 | } | |
728 | ||
729 | skb = skb_recv_datagram(sk, flags, noblock, &err); | |
730 | if (!skb) | |
731 | goto out; | |
732 | ||
733 | copied = skb->len; | |
734 | if (len < copied) { | |
735 | msg->msg_flags |= MSG_TRUNC; | |
736 | copied = len; | |
737 | } | |
738 | ||
51f3d02b | 739 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
1da177e4 LT |
740 | if (err) |
741 | goto done; | |
742 | ||
3b885787 | 743 | sock_recv_ts_and_drops(msg, sk, skb); |
1da177e4 LT |
744 | |
745 | /* Copy the address. */ | |
746 | if (sin) { | |
747 | sin->sin_family = AF_INET; | |
eddc9ec5 | 748 | sin->sin_addr.s_addr = ip_hdr(skb)->saddr; |
f59fc7f3 | 749 | sin->sin_port = 0; |
1da177e4 | 750 | memset(&sin->sin_zero, 0, sizeof(sin->sin_zero)); |
bceaa902 | 751 | *addr_len = sizeof(*sin); |
1da177e4 LT |
752 | } |
753 | if (inet->cmsg_flags) | |
754 | ip_cmsg_recv(msg, skb); | |
755 | if (flags & MSG_TRUNC) | |
756 | copied = skb->len; | |
757 | done: | |
758 | skb_free_datagram(sk, skb); | |
5418c692 JJ |
759 | out: |
760 | if (err) | |
761 | return err; | |
762 | return copied; | |
1da177e4 LT |
763 | } |
764 | ||
765 | static int raw_init(struct sock *sk) | |
766 | { | |
767 | struct raw_sock *rp = raw_sk(sk); | |
768 | ||
c720c7e8 | 769 | if (inet_sk(sk)->inet_num == IPPROTO_ICMP) |
1da177e4 LT |
770 | memset(&rp->filter, 0, sizeof(rp->filter)); |
771 | return 0; | |
772 | } | |
773 | ||
774 | static int raw_seticmpfilter(struct sock *sk, char __user *optval, int optlen) | |
775 | { | |
776 | if (optlen > sizeof(struct icmp_filter)) | |
777 | optlen = sizeof(struct icmp_filter); | |
778 | if (copy_from_user(&raw_sk(sk)->filter, optval, optlen)) | |
779 | return -EFAULT; | |
780 | return 0; | |
781 | } | |
782 | ||
783 | static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *optlen) | |
784 | { | |
785 | int len, ret = -EFAULT; | |
786 | ||
787 | if (get_user(len, optlen)) | |
788 | goto out; | |
789 | ret = -EINVAL; | |
790 | if (len < 0) | |
791 | goto out; | |
792 | if (len > sizeof(struct icmp_filter)) | |
793 | len = sizeof(struct icmp_filter); | |
794 | ret = -EFAULT; | |
795 | if (put_user(len, optlen) || | |
796 | copy_to_user(optval, &raw_sk(sk)->filter, len)) | |
797 | goto out; | |
798 | ret = 0; | |
799 | out: return ret; | |
800 | } | |
801 | ||
3fdadf7d | 802 | static int do_raw_setsockopt(struct sock *sk, int level, int optname, |
b7058842 | 803 | char __user *optval, unsigned int optlen) |
1da177e4 | 804 | { |
1da177e4 | 805 | if (optname == ICMP_FILTER) { |
c720c7e8 | 806 | if (inet_sk(sk)->inet_num != IPPROTO_ICMP) |
1da177e4 LT |
807 | return -EOPNOTSUPP; |
808 | else | |
809 | return raw_seticmpfilter(sk, optval, optlen); | |
810 | } | |
811 | return -ENOPROTOOPT; | |
812 | } | |
813 | ||
3fdadf7d | 814 | static int raw_setsockopt(struct sock *sk, int level, int optname, |
b7058842 | 815 | char __user *optval, unsigned int optlen) |
1da177e4 LT |
816 | { |
817 | if (level != SOL_RAW) | |
3fdadf7d DM |
818 | return ip_setsockopt(sk, level, optname, optval, optlen); |
819 | return do_raw_setsockopt(sk, level, optname, optval, optlen); | |
820 | } | |
1da177e4 | 821 | |
3fdadf7d DM |
822 | #ifdef CONFIG_COMPAT |
823 | static int compat_raw_setsockopt(struct sock *sk, int level, int optname, | |
b7058842 | 824 | char __user *optval, unsigned int optlen) |
3fdadf7d DM |
825 | { |
826 | if (level != SOL_RAW) | |
543d9cfe | 827 | return compat_ip_setsockopt(sk, level, optname, optval, optlen); |
3fdadf7d DM |
828 | return do_raw_setsockopt(sk, level, optname, optval, optlen); |
829 | } | |
830 | #endif | |
831 | ||
832 | static int do_raw_getsockopt(struct sock *sk, int level, int optname, | |
833 | char __user *optval, int __user *optlen) | |
834 | { | |
1da177e4 | 835 | if (optname == ICMP_FILTER) { |
c720c7e8 | 836 | if (inet_sk(sk)->inet_num != IPPROTO_ICMP) |
1da177e4 LT |
837 | return -EOPNOTSUPP; |
838 | else | |
839 | return raw_geticmpfilter(sk, optval, optlen); | |
840 | } | |
841 | return -ENOPROTOOPT; | |
842 | } | |
843 | ||
3fdadf7d DM |
844 | static int raw_getsockopt(struct sock *sk, int level, int optname, |
845 | char __user *optval, int __user *optlen) | |
846 | { | |
847 | if (level != SOL_RAW) | |
848 | return ip_getsockopt(sk, level, optname, optval, optlen); | |
849 | return do_raw_getsockopt(sk, level, optname, optval, optlen); | |
850 | } | |
851 | ||
852 | #ifdef CONFIG_COMPAT | |
853 | static int compat_raw_getsockopt(struct sock *sk, int level, int optname, | |
543d9cfe | 854 | char __user *optval, int __user *optlen) |
3fdadf7d DM |
855 | { |
856 | if (level != SOL_RAW) | |
543d9cfe | 857 | return compat_ip_getsockopt(sk, level, optname, optval, optlen); |
3fdadf7d DM |
858 | return do_raw_getsockopt(sk, level, optname, optval, optlen); |
859 | } | |
860 | #endif | |
861 | ||
1da177e4 LT |
862 | static int raw_ioctl(struct sock *sk, int cmd, unsigned long arg) |
863 | { | |
864 | switch (cmd) { | |
4500ebf8 JP |
865 | case SIOCOUTQ: { |
866 | int amount = sk_wmem_alloc_get(sk); | |
31e6d363 | 867 | |
4500ebf8 JP |
868 | return put_user(amount, (int __user *)arg); |
869 | } | |
870 | case SIOCINQ: { | |
871 | struct sk_buff *skb; | |
872 | int amount = 0; | |
873 | ||
874 | spin_lock_bh(&sk->sk_receive_queue.lock); | |
875 | skb = skb_peek(&sk->sk_receive_queue); | |
876 | if (skb != NULL) | |
877 | amount = skb->len; | |
878 | spin_unlock_bh(&sk->sk_receive_queue.lock); | |
879 | return put_user(amount, (int __user *)arg); | |
880 | } | |
1da177e4 | 881 | |
4500ebf8 | 882 | default: |
1da177e4 | 883 | #ifdef CONFIG_IP_MROUTE |
4500ebf8 | 884 | return ipmr_ioctl(sk, cmd, (void __user *)arg); |
1da177e4 | 885 | #else |
4500ebf8 | 886 | return -ENOIOCTLCMD; |
1da177e4 LT |
887 | #endif |
888 | } | |
889 | } | |
890 | ||
709b46e8 EB |
891 | #ifdef CONFIG_COMPAT |
892 | static int compat_raw_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg) | |
893 | { | |
894 | switch (cmd) { | |
895 | case SIOCOUTQ: | |
896 | case SIOCINQ: | |
897 | return -ENOIOCTLCMD; | |
898 | default: | |
899 | #ifdef CONFIG_IP_MROUTE | |
900 | return ipmr_compat_ioctl(sk, cmd, compat_ptr(arg)); | |
901 | #else | |
902 | return -ENOIOCTLCMD; | |
903 | #endif | |
904 | } | |
905 | } | |
906 | #endif | |
907 | ||
1da177e4 | 908 | struct proto raw_prot = { |
543d9cfe ACM |
909 | .name = "RAW", |
910 | .owner = THIS_MODULE, | |
911 | .close = raw_close, | |
22dd4850 | 912 | .destroy = raw_destroy, |
543d9cfe ACM |
913 | .connect = ip4_datagram_connect, |
914 | .disconnect = udp_disconnect, | |
915 | .ioctl = raw_ioctl, | |
916 | .init = raw_init, | |
917 | .setsockopt = raw_setsockopt, | |
918 | .getsockopt = raw_getsockopt, | |
919 | .sendmsg = raw_sendmsg, | |
920 | .recvmsg = raw_recvmsg, | |
921 | .bind = raw_bind, | |
922 | .backlog_rcv = raw_rcv_skb, | |
8141ed9f | 923 | .release_cb = ip4_datagram_release_cb, |
fc8717ba PE |
924 | .hash = raw_hash_sk, |
925 | .unhash = raw_unhash_sk, | |
543d9cfe | 926 | .obj_size = sizeof(struct raw_sock), |
fc8717ba | 927 | .h.raw_hash = &raw_v4_hashinfo, |
3fdadf7d | 928 | #ifdef CONFIG_COMPAT |
543d9cfe ACM |
929 | .compat_setsockopt = compat_raw_setsockopt, |
930 | .compat_getsockopt = compat_raw_getsockopt, | |
709b46e8 | 931 | .compat_ioctl = compat_raw_ioctl, |
3fdadf7d | 932 | #endif |
1da177e4 LT |
933 | }; |
934 | ||
935 | #ifdef CONFIG_PROC_FS | |
1da177e4 LT |
936 | static struct sock *raw_get_first(struct seq_file *seq) |
937 | { | |
938 | struct sock *sk; | |
5a5f3a8d | 939 | struct raw_iter_state *state = raw_seq_private(seq); |
1da177e4 | 940 | |
b673e4df PE |
941 | for (state->bucket = 0; state->bucket < RAW_HTABLE_SIZE; |
942 | ++state->bucket) { | |
b67bfe0d | 943 | sk_for_each(sk, &state->h->ht[state->bucket]) |
1218854a | 944 | if (sock_net(sk) == seq_file_net(seq)) |
1da177e4 LT |
945 | goto found; |
946 | } | |
947 | sk = NULL; | |
948 | found: | |
949 | return sk; | |
950 | } | |
951 | ||
952 | static struct sock *raw_get_next(struct seq_file *seq, struct sock *sk) | |
953 | { | |
5a5f3a8d | 954 | struct raw_iter_state *state = raw_seq_private(seq); |
1da177e4 LT |
955 | |
956 | do { | |
957 | sk = sk_next(sk); | |
958 | try_again: | |
959 | ; | |
1218854a | 960 | } while (sk && sock_net(sk) != seq_file_net(seq)); |
1da177e4 | 961 | |
b673e4df | 962 | if (!sk && ++state->bucket < RAW_HTABLE_SIZE) { |
42a73808 | 963 | sk = sk_head(&state->h->ht[state->bucket]); |
1da177e4 LT |
964 | goto try_again; |
965 | } | |
966 | return sk; | |
967 | } | |
968 | ||
969 | static struct sock *raw_get_idx(struct seq_file *seq, loff_t pos) | |
970 | { | |
971 | struct sock *sk = raw_get_first(seq); | |
972 | ||
973 | if (sk) | |
974 | while (pos && (sk = raw_get_next(seq, sk)) != NULL) | |
975 | --pos; | |
976 | return pos ? NULL : sk; | |
977 | } | |
978 | ||
42a73808 | 979 | void *raw_seq_start(struct seq_file *seq, loff_t *pos) |
1da177e4 | 980 | { |
42a73808 PE |
981 | struct raw_iter_state *state = raw_seq_private(seq); |
982 | ||
983 | read_lock(&state->h->lock); | |
1da177e4 LT |
984 | return *pos ? raw_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; |
985 | } | |
42a73808 | 986 | EXPORT_SYMBOL_GPL(raw_seq_start); |
1da177e4 | 987 | |
42a73808 | 988 | void *raw_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
1da177e4 LT |
989 | { |
990 | struct sock *sk; | |
991 | ||
992 | if (v == SEQ_START_TOKEN) | |
993 | sk = raw_get_first(seq); | |
994 | else | |
995 | sk = raw_get_next(seq, v); | |
996 | ++*pos; | |
997 | return sk; | |
998 | } | |
42a73808 | 999 | EXPORT_SYMBOL_GPL(raw_seq_next); |
1da177e4 | 1000 | |
42a73808 | 1001 | void raw_seq_stop(struct seq_file *seq, void *v) |
1da177e4 | 1002 | { |
42a73808 PE |
1003 | struct raw_iter_state *state = raw_seq_private(seq); |
1004 | ||
1005 | read_unlock(&state->h->lock); | |
1da177e4 | 1006 | } |
42a73808 | 1007 | EXPORT_SYMBOL_GPL(raw_seq_stop); |
1da177e4 | 1008 | |
8cd850ef | 1009 | static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i) |
1da177e4 LT |
1010 | { |
1011 | struct inet_sock *inet = inet_sk(sp); | |
c720c7e8 ED |
1012 | __be32 dest = inet->inet_daddr, |
1013 | src = inet->inet_rcv_saddr; | |
1da177e4 | 1014 | __u16 destp = 0, |
c720c7e8 | 1015 | srcp = inet->inet_num; |
1da177e4 | 1016 | |
8cd850ef | 1017 | seq_printf(seq, "%4d: %08X:%04X %08X:%04X" |
d14c5ab6 | 1018 | " %02X %08X:%08X %02X:%08lX %08X %5u %8d %lu %d %pK %d\n", |
e905a9ed | 1019 | i, src, srcp, dest, destp, sp->sk_state, |
31e6d363 ED |
1020 | sk_wmem_alloc_get(sp), |
1021 | sk_rmem_alloc_get(sp), | |
a7cb5a49 EB |
1022 | 0, 0L, 0, |
1023 | from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)), | |
1024 | 0, sock_i_ino(sp), | |
33c732c3 | 1025 | atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops)); |
1da177e4 LT |
1026 | } |
1027 | ||
1028 | static int raw_seq_show(struct seq_file *seq, void *v) | |
1029 | { | |
1da177e4 | 1030 | if (v == SEQ_START_TOKEN) |
8cd850ef DL |
1031 | seq_printf(seq, " sl local_address rem_address st tx_queue " |
1032 | "rx_queue tr tm->when retrnsmt uid timeout " | |
cb61cb9b | 1033 | "inode ref pointer drops\n"); |
8cd850ef DL |
1034 | else |
1035 | raw_sock_seq_show(seq, v, raw_seq_private(seq)->bucket); | |
1da177e4 LT |
1036 | return 0; |
1037 | } | |
1038 | ||
f690808e | 1039 | static const struct seq_operations raw_seq_ops = { |
1da177e4 LT |
1040 | .start = raw_seq_start, |
1041 | .next = raw_seq_next, | |
1042 | .stop = raw_seq_stop, | |
1043 | .show = raw_seq_show, | |
1044 | }; | |
1045 | ||
3046d767 DL |
1046 | int raw_seq_open(struct inode *ino, struct file *file, |
1047 | struct raw_hashinfo *h, const struct seq_operations *ops) | |
1da177e4 | 1048 | { |
f51d599f | 1049 | int err; |
42a73808 PE |
1050 | struct raw_iter_state *i; |
1051 | ||
3046d767 | 1052 | err = seq_open_net(ino, file, ops, sizeof(struct raw_iter_state)); |
f51d599f PE |
1053 | if (err < 0) |
1054 | return err; | |
42a73808 | 1055 | |
f51d599f | 1056 | i = raw_seq_private((struct seq_file *)file->private_data); |
42a73808 | 1057 | i->h = h; |
42a73808 PE |
1058 | return 0; |
1059 | } | |
1060 | EXPORT_SYMBOL_GPL(raw_seq_open); | |
1061 | ||
1062 | static int raw_v4_seq_open(struct inode *inode, struct file *file) | |
1063 | { | |
3046d767 | 1064 | return raw_seq_open(inode, file, &raw_v4_hashinfo, &raw_seq_ops); |
1da177e4 LT |
1065 | } |
1066 | ||
9a32144e | 1067 | static const struct file_operations raw_seq_fops = { |
1da177e4 | 1068 | .owner = THIS_MODULE, |
42a73808 | 1069 | .open = raw_v4_seq_open, |
1da177e4 LT |
1070 | .read = seq_read, |
1071 | .llseek = seq_lseek, | |
f51d599f | 1072 | .release = seq_release_net, |
1da177e4 LT |
1073 | }; |
1074 | ||
a308da16 | 1075 | static __net_init int raw_init_net(struct net *net) |
1da177e4 | 1076 | { |
d4beaa66 | 1077 | if (!proc_create("raw", S_IRUGO, net->proc_net, &raw_seq_fops)) |
1da177e4 | 1078 | return -ENOMEM; |
a308da16 | 1079 | |
1da177e4 LT |
1080 | return 0; |
1081 | } | |
1082 | ||
a308da16 PE |
1083 | static __net_exit void raw_exit_net(struct net *net) |
1084 | { | |
ece31ffd | 1085 | remove_proc_entry("raw", net->proc_net); |
a308da16 PE |
1086 | } |
1087 | ||
1088 | static __net_initdata struct pernet_operations raw_net_ops = { | |
1089 | .init = raw_init_net, | |
1090 | .exit = raw_exit_net, | |
1091 | }; | |
1092 | ||
1093 | int __init raw_proc_init(void) | |
1094 | { | |
1095 | return register_pernet_subsys(&raw_net_ops); | |
1096 | } | |
1097 | ||
1da177e4 LT |
1098 | void __init raw_proc_exit(void) |
1099 | { | |
a308da16 | 1100 | unregister_pernet_subsys(&raw_net_ops); |
1da177e4 LT |
1101 | } |
1102 | #endif /* CONFIG_PROC_FS */ |