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net: Allow userns root control of the core of the network stack.
[deliverable/linux.git] / net / ipv4 / ip_sockglue.c
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 * The IP to API glue.
7 *
8 * Authors: see ip.c
9 *
10 * Fixes:
11 * Many : Split from ip.c , see ip.c for history.
12 * Martin Mares : TOS setting fixed.
13 * Alan Cox : Fixed a couple of oopses in Martin's
14 * TOS tweaks.
15 * Mike McLagan : Routing by source
16 */
17
18 #include <linux/module.h>
19 #include <linux/types.h>
20 #include <linux/mm.h>
21 #include <linux/skbuff.h>
22 #include <linux/ip.h>
23 #include <linux/icmp.h>
24 #include <linux/inetdevice.h>
25 #include <linux/netdevice.h>
26 #include <linux/slab.h>
27 #include <net/sock.h>
28 #include <net/ip.h>
29 #include <net/icmp.h>
30 #include <net/tcp_states.h>
31 #include <linux/udp.h>
32 #include <linux/igmp.h>
33 #include <linux/netfilter.h>
34 #include <linux/route.h>
35 #include <linux/mroute.h>
36 #include <net/inet_ecn.h>
37 #include <net/route.h>
38 #include <net/xfrm.h>
39 #include <net/compat.h>
40 #if IS_ENABLED(CONFIG_IPV6)
41 #include <net/transp_v6.h>
42 #endif
43 #include <net/ip_fib.h>
44
45 #include <linux/errqueue.h>
46 #include <asm/uaccess.h>
47
48 #define IP_CMSG_PKTINFO 1
49 #define IP_CMSG_TTL 2
50 #define IP_CMSG_TOS 4
51 #define IP_CMSG_RECVOPTS 8
52 #define IP_CMSG_RETOPTS 16
53 #define IP_CMSG_PASSSEC 32
54 #define IP_CMSG_ORIGDSTADDR 64
55
56 /*
57 * SOL_IP control messages.
58 */
59 #define PKTINFO_SKB_CB(__skb) ((struct in_pktinfo *)((__skb)->cb))
60
61 static void ip_cmsg_recv_pktinfo(struct msghdr *msg, struct sk_buff *skb)
62 {
63 struct in_pktinfo info = *PKTINFO_SKB_CB(skb);
64
65 info.ipi_addr.s_addr = ip_hdr(skb)->daddr;
66
67 put_cmsg(msg, SOL_IP, IP_PKTINFO, sizeof(info), &info);
68 }
69
70 static void ip_cmsg_recv_ttl(struct msghdr *msg, struct sk_buff *skb)
71 {
72 int ttl = ip_hdr(skb)->ttl;
73 put_cmsg(msg, SOL_IP, IP_TTL, sizeof(int), &ttl);
74 }
75
76 static void ip_cmsg_recv_tos(struct msghdr *msg, struct sk_buff *skb)
77 {
78 put_cmsg(msg, SOL_IP, IP_TOS, 1, &ip_hdr(skb)->tos);
79 }
80
81 static void ip_cmsg_recv_opts(struct msghdr *msg, struct sk_buff *skb)
82 {
83 if (IPCB(skb)->opt.optlen == 0)
84 return;
85
86 put_cmsg(msg, SOL_IP, IP_RECVOPTS, IPCB(skb)->opt.optlen,
87 ip_hdr(skb) + 1);
88 }
89
90
91 static void ip_cmsg_recv_retopts(struct msghdr *msg, struct sk_buff *skb)
92 {
93 unsigned char optbuf[sizeof(struct ip_options) + 40];
94 struct ip_options *opt = (struct ip_options *)optbuf;
95
96 if (IPCB(skb)->opt.optlen == 0)
97 return;
98
99 if (ip_options_echo(opt, skb)) {
100 msg->msg_flags |= MSG_CTRUNC;
101 return;
102 }
103 ip_options_undo(opt);
104
105 put_cmsg(msg, SOL_IP, IP_RETOPTS, opt->optlen, opt->__data);
106 }
107
108 static void ip_cmsg_recv_security(struct msghdr *msg, struct sk_buff *skb)
109 {
110 char *secdata;
111 u32 seclen, secid;
112 int err;
113
114 err = security_socket_getpeersec_dgram(NULL, skb, &secid);
115 if (err)
116 return;
117
118 err = security_secid_to_secctx(secid, &secdata, &seclen);
119 if (err)
120 return;
121
122 put_cmsg(msg, SOL_IP, SCM_SECURITY, seclen, secdata);
123 security_release_secctx(secdata, seclen);
124 }
125
126 static void ip_cmsg_recv_dstaddr(struct msghdr *msg, struct sk_buff *skb)
127 {
128 struct sockaddr_in sin;
129 const struct iphdr *iph = ip_hdr(skb);
130 __be16 *ports = (__be16 *)skb_transport_header(skb);
131
132 if (skb_transport_offset(skb) + 4 > skb->len)
133 return;
134
135 /* All current transport protocols have the port numbers in the
136 * first four bytes of the transport header and this function is
137 * written with this assumption in mind.
138 */
139
140 sin.sin_family = AF_INET;
141 sin.sin_addr.s_addr = iph->daddr;
142 sin.sin_port = ports[1];
143 memset(sin.sin_zero, 0, sizeof(sin.sin_zero));
144
145 put_cmsg(msg, SOL_IP, IP_ORIGDSTADDR, sizeof(sin), &sin);
146 }
147
148 void ip_cmsg_recv(struct msghdr *msg, struct sk_buff *skb)
149 {
150 struct inet_sock *inet = inet_sk(skb->sk);
151 unsigned int flags = inet->cmsg_flags;
152
153 /* Ordered by supposed usage frequency */
154 if (flags & 1)
155 ip_cmsg_recv_pktinfo(msg, skb);
156 if ((flags >>= 1) == 0)
157 return;
158
159 if (flags & 1)
160 ip_cmsg_recv_ttl(msg, skb);
161 if ((flags >>= 1) == 0)
162 return;
163
164 if (flags & 1)
165 ip_cmsg_recv_tos(msg, skb);
166 if ((flags >>= 1) == 0)
167 return;
168
169 if (flags & 1)
170 ip_cmsg_recv_opts(msg, skb);
171 if ((flags >>= 1) == 0)
172 return;
173
174 if (flags & 1)
175 ip_cmsg_recv_retopts(msg, skb);
176 if ((flags >>= 1) == 0)
177 return;
178
179 if (flags & 1)
180 ip_cmsg_recv_security(msg, skb);
181
182 if ((flags >>= 1) == 0)
183 return;
184 if (flags & 1)
185 ip_cmsg_recv_dstaddr(msg, skb);
186
187 }
188 EXPORT_SYMBOL(ip_cmsg_recv);
189
190 int ip_cmsg_send(struct net *net, struct msghdr *msg, struct ipcm_cookie *ipc)
191 {
192 int err;
193 struct cmsghdr *cmsg;
194
195 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
196 if (!CMSG_OK(msg, cmsg))
197 return -EINVAL;
198 if (cmsg->cmsg_level != SOL_IP)
199 continue;
200 switch (cmsg->cmsg_type) {
201 case IP_RETOPTS:
202 err = cmsg->cmsg_len - CMSG_ALIGN(sizeof(struct cmsghdr));
203 err = ip_options_get(net, &ipc->opt, CMSG_DATA(cmsg),
204 err < 40 ? err : 40);
205 if (err)
206 return err;
207 break;
208 case IP_PKTINFO:
209 {
210 struct in_pktinfo *info;
211 if (cmsg->cmsg_len != CMSG_LEN(sizeof(struct in_pktinfo)))
212 return -EINVAL;
213 info = (struct in_pktinfo *)CMSG_DATA(cmsg);
214 ipc->oif = info->ipi_ifindex;
215 ipc->addr = info->ipi_spec_dst.s_addr;
216 break;
217 }
218 default:
219 return -EINVAL;
220 }
221 }
222 return 0;
223 }
224
225
226 /* Special input handler for packets caught by router alert option.
227 They are selected only by protocol field, and then processed likely
228 local ones; but only if someone wants them! Otherwise, router
229 not running rsvpd will kill RSVP.
230
231 It is user level problem, what it will make with them.
232 I have no idea, how it will masquearde or NAT them (it is joke, joke :-)),
233 but receiver should be enough clever f.e. to forward mtrace requests,
234 sent to multicast group to reach destination designated router.
235 */
236 struct ip_ra_chain __rcu *ip_ra_chain;
237 static DEFINE_SPINLOCK(ip_ra_lock);
238
239
240 static void ip_ra_destroy_rcu(struct rcu_head *head)
241 {
242 struct ip_ra_chain *ra = container_of(head, struct ip_ra_chain, rcu);
243
244 sock_put(ra->saved_sk);
245 kfree(ra);
246 }
247
248 int ip_ra_control(struct sock *sk, unsigned char on,
249 void (*destructor)(struct sock *))
250 {
251 struct ip_ra_chain *ra, *new_ra;
252 struct ip_ra_chain __rcu **rap;
253
254 if (sk->sk_type != SOCK_RAW || inet_sk(sk)->inet_num == IPPROTO_RAW)
255 return -EINVAL;
256
257 new_ra = on ? kmalloc(sizeof(*new_ra), GFP_KERNEL) : NULL;
258
259 spin_lock_bh(&ip_ra_lock);
260 for (rap = &ip_ra_chain;
261 (ra = rcu_dereference_protected(*rap,
262 lockdep_is_held(&ip_ra_lock))) != NULL;
263 rap = &ra->next) {
264 if (ra->sk == sk) {
265 if (on) {
266 spin_unlock_bh(&ip_ra_lock);
267 kfree(new_ra);
268 return -EADDRINUSE;
269 }
270 /* dont let ip_call_ra_chain() use sk again */
271 ra->sk = NULL;
272 rcu_assign_pointer(*rap, ra->next);
273 spin_unlock_bh(&ip_ra_lock);
274
275 if (ra->destructor)
276 ra->destructor(sk);
277 /*
278 * Delay sock_put(sk) and kfree(ra) after one rcu grace
279 * period. This guarantee ip_call_ra_chain() dont need
280 * to mess with socket refcounts.
281 */
282 ra->saved_sk = sk;
283 call_rcu(&ra->rcu, ip_ra_destroy_rcu);
284 return 0;
285 }
286 }
287 if (new_ra == NULL) {
288 spin_unlock_bh(&ip_ra_lock);
289 return -ENOBUFS;
290 }
291 new_ra->sk = sk;
292 new_ra->destructor = destructor;
293
294 new_ra->next = ra;
295 rcu_assign_pointer(*rap, new_ra);
296 sock_hold(sk);
297 spin_unlock_bh(&ip_ra_lock);
298
299 return 0;
300 }
301
302 void ip_icmp_error(struct sock *sk, struct sk_buff *skb, int err,
303 __be16 port, u32 info, u8 *payload)
304 {
305 struct sock_exterr_skb *serr;
306
307 skb = skb_clone(skb, GFP_ATOMIC);
308 if (!skb)
309 return;
310
311 serr = SKB_EXT_ERR(skb);
312 serr->ee.ee_errno = err;
313 serr->ee.ee_origin = SO_EE_ORIGIN_ICMP;
314 serr->ee.ee_type = icmp_hdr(skb)->type;
315 serr->ee.ee_code = icmp_hdr(skb)->code;
316 serr->ee.ee_pad = 0;
317 serr->ee.ee_info = info;
318 serr->ee.ee_data = 0;
319 serr->addr_offset = (u8 *)&(((struct iphdr *)(icmp_hdr(skb) + 1))->daddr) -
320 skb_network_header(skb);
321 serr->port = port;
322
323 if (skb_pull(skb, payload - skb->data) != NULL) {
324 skb_reset_transport_header(skb);
325 if (sock_queue_err_skb(sk, skb) == 0)
326 return;
327 }
328 kfree_skb(skb);
329 }
330
331 void ip_local_error(struct sock *sk, int err, __be32 daddr, __be16 port, u32 info)
332 {
333 struct inet_sock *inet = inet_sk(sk);
334 struct sock_exterr_skb *serr;
335 struct iphdr *iph;
336 struct sk_buff *skb;
337
338 if (!inet->recverr)
339 return;
340
341 skb = alloc_skb(sizeof(struct iphdr), GFP_ATOMIC);
342 if (!skb)
343 return;
344
345 skb_put(skb, sizeof(struct iphdr));
346 skb_reset_network_header(skb);
347 iph = ip_hdr(skb);
348 iph->daddr = daddr;
349
350 serr = SKB_EXT_ERR(skb);
351 serr->ee.ee_errno = err;
352 serr->ee.ee_origin = SO_EE_ORIGIN_LOCAL;
353 serr->ee.ee_type = 0;
354 serr->ee.ee_code = 0;
355 serr->ee.ee_pad = 0;
356 serr->ee.ee_info = info;
357 serr->ee.ee_data = 0;
358 serr->addr_offset = (u8 *)&iph->daddr - skb_network_header(skb);
359 serr->port = port;
360
361 __skb_pull(skb, skb_tail_pointer(skb) - skb->data);
362 skb_reset_transport_header(skb);
363
364 if (sock_queue_err_skb(sk, skb))
365 kfree_skb(skb);
366 }
367
368 /*
369 * Handle MSG_ERRQUEUE
370 */
371 int ip_recv_error(struct sock *sk, struct msghdr *msg, int len)
372 {
373 struct sock_exterr_skb *serr;
374 struct sk_buff *skb, *skb2;
375 struct sockaddr_in *sin;
376 struct {
377 struct sock_extended_err ee;
378 struct sockaddr_in offender;
379 } errhdr;
380 int err;
381 int copied;
382
383 err = -EAGAIN;
384 skb = skb_dequeue(&sk->sk_error_queue);
385 if (skb == NULL)
386 goto out;
387
388 copied = skb->len;
389 if (copied > len) {
390 msg->msg_flags |= MSG_TRUNC;
391 copied = len;
392 }
393 err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
394 if (err)
395 goto out_free_skb;
396
397 sock_recv_timestamp(msg, sk, skb);
398
399 serr = SKB_EXT_ERR(skb);
400
401 sin = (struct sockaddr_in *)msg->msg_name;
402 if (sin) {
403 sin->sin_family = AF_INET;
404 sin->sin_addr.s_addr = *(__be32 *)(skb_network_header(skb) +
405 serr->addr_offset);
406 sin->sin_port = serr->port;
407 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
408 }
409
410 memcpy(&errhdr.ee, &serr->ee, sizeof(struct sock_extended_err));
411 sin = &errhdr.offender;
412 sin->sin_family = AF_UNSPEC;
413 if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP) {
414 struct inet_sock *inet = inet_sk(sk);
415
416 sin->sin_family = AF_INET;
417 sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
418 sin->sin_port = 0;
419 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
420 if (inet->cmsg_flags)
421 ip_cmsg_recv(msg, skb);
422 }
423
424 put_cmsg(msg, SOL_IP, IP_RECVERR, sizeof(errhdr), &errhdr);
425
426 /* Now we could try to dump offended packet options */
427
428 msg->msg_flags |= MSG_ERRQUEUE;
429 err = copied;
430
431 /* Reset and regenerate socket error */
432 spin_lock_bh(&sk->sk_error_queue.lock);
433 sk->sk_err = 0;
434 skb2 = skb_peek(&sk->sk_error_queue);
435 if (skb2 != NULL) {
436 sk->sk_err = SKB_EXT_ERR(skb2)->ee.ee_errno;
437 spin_unlock_bh(&sk->sk_error_queue.lock);
438 sk->sk_error_report(sk);
439 } else
440 spin_unlock_bh(&sk->sk_error_queue.lock);
441
442 out_free_skb:
443 kfree_skb(skb);
444 out:
445 return err;
446 }
447
448
449 /*
450 * Socket option code for IP. This is the end of the line after any
451 * TCP,UDP etc options on an IP socket.
452 */
453
454 static int do_ip_setsockopt(struct sock *sk, int level,
455 int optname, char __user *optval, unsigned int optlen)
456 {
457 struct inet_sock *inet = inet_sk(sk);
458 int val = 0, err;
459
460 switch (optname) {
461 case IP_PKTINFO:
462 case IP_RECVTTL:
463 case IP_RECVOPTS:
464 case IP_RECVTOS:
465 case IP_RETOPTS:
466 case IP_TOS:
467 case IP_TTL:
468 case IP_HDRINCL:
469 case IP_MTU_DISCOVER:
470 case IP_RECVERR:
471 case IP_ROUTER_ALERT:
472 case IP_FREEBIND:
473 case IP_PASSSEC:
474 case IP_TRANSPARENT:
475 case IP_MINTTL:
476 case IP_NODEFRAG:
477 case IP_UNICAST_IF:
478 case IP_MULTICAST_TTL:
479 case IP_MULTICAST_ALL:
480 case IP_MULTICAST_LOOP:
481 case IP_RECVORIGDSTADDR:
482 if (optlen >= sizeof(int)) {
483 if (get_user(val, (int __user *) optval))
484 return -EFAULT;
485 } else if (optlen >= sizeof(char)) {
486 unsigned char ucval;
487
488 if (get_user(ucval, (unsigned char __user *) optval))
489 return -EFAULT;
490 val = (int) ucval;
491 }
492 }
493
494 /* If optlen==0, it is equivalent to val == 0 */
495
496 if (ip_mroute_opt(optname))
497 return ip_mroute_setsockopt(sk, optname, optval, optlen);
498
499 err = 0;
500 lock_sock(sk);
501
502 switch (optname) {
503 case IP_OPTIONS:
504 {
505 struct ip_options_rcu *old, *opt = NULL;
506
507 if (optlen > 40)
508 goto e_inval;
509 err = ip_options_get_from_user(sock_net(sk), &opt,
510 optval, optlen);
511 if (err)
512 break;
513 old = rcu_dereference_protected(inet->inet_opt,
514 sock_owned_by_user(sk));
515 if (inet->is_icsk) {
516 struct inet_connection_sock *icsk = inet_csk(sk);
517 #if IS_ENABLED(CONFIG_IPV6)
518 if (sk->sk_family == PF_INET ||
519 (!((1 << sk->sk_state) &
520 (TCPF_LISTEN | TCPF_CLOSE)) &&
521 inet->inet_daddr != LOOPBACK4_IPV6)) {
522 #endif
523 if (old)
524 icsk->icsk_ext_hdr_len -= old->opt.optlen;
525 if (opt)
526 icsk->icsk_ext_hdr_len += opt->opt.optlen;
527 icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
528 #if IS_ENABLED(CONFIG_IPV6)
529 }
530 #endif
531 }
532 rcu_assign_pointer(inet->inet_opt, opt);
533 if (old)
534 kfree_rcu(old, rcu);
535 break;
536 }
537 case IP_PKTINFO:
538 if (val)
539 inet->cmsg_flags |= IP_CMSG_PKTINFO;
540 else
541 inet->cmsg_flags &= ~IP_CMSG_PKTINFO;
542 break;
543 case IP_RECVTTL:
544 if (val)
545 inet->cmsg_flags |= IP_CMSG_TTL;
546 else
547 inet->cmsg_flags &= ~IP_CMSG_TTL;
548 break;
549 case IP_RECVTOS:
550 if (val)
551 inet->cmsg_flags |= IP_CMSG_TOS;
552 else
553 inet->cmsg_flags &= ~IP_CMSG_TOS;
554 break;
555 case IP_RECVOPTS:
556 if (val)
557 inet->cmsg_flags |= IP_CMSG_RECVOPTS;
558 else
559 inet->cmsg_flags &= ~IP_CMSG_RECVOPTS;
560 break;
561 case IP_RETOPTS:
562 if (val)
563 inet->cmsg_flags |= IP_CMSG_RETOPTS;
564 else
565 inet->cmsg_flags &= ~IP_CMSG_RETOPTS;
566 break;
567 case IP_PASSSEC:
568 if (val)
569 inet->cmsg_flags |= IP_CMSG_PASSSEC;
570 else
571 inet->cmsg_flags &= ~IP_CMSG_PASSSEC;
572 break;
573 case IP_RECVORIGDSTADDR:
574 if (val)
575 inet->cmsg_flags |= IP_CMSG_ORIGDSTADDR;
576 else
577 inet->cmsg_flags &= ~IP_CMSG_ORIGDSTADDR;
578 break;
579 case IP_TOS: /* This sets both TOS and Precedence */
580 if (sk->sk_type == SOCK_STREAM) {
581 val &= ~INET_ECN_MASK;
582 val |= inet->tos & INET_ECN_MASK;
583 }
584 if (inet->tos != val) {
585 inet->tos = val;
586 sk->sk_priority = rt_tos2priority(val);
587 sk_dst_reset(sk);
588 }
589 break;
590 case IP_TTL:
591 if (optlen < 1)
592 goto e_inval;
593 if (val != -1 && (val < 0 || val > 255))
594 goto e_inval;
595 inet->uc_ttl = val;
596 break;
597 case IP_HDRINCL:
598 if (sk->sk_type != SOCK_RAW) {
599 err = -ENOPROTOOPT;
600 break;
601 }
602 inet->hdrincl = val ? 1 : 0;
603 break;
604 case IP_NODEFRAG:
605 if (sk->sk_type != SOCK_RAW) {
606 err = -ENOPROTOOPT;
607 break;
608 }
609 inet->nodefrag = val ? 1 : 0;
610 break;
611 case IP_MTU_DISCOVER:
612 if (val < IP_PMTUDISC_DONT || val > IP_PMTUDISC_PROBE)
613 goto e_inval;
614 inet->pmtudisc = val;
615 break;
616 case IP_RECVERR:
617 inet->recverr = !!val;
618 if (!val)
619 skb_queue_purge(&sk->sk_error_queue);
620 break;
621 case IP_MULTICAST_TTL:
622 if (sk->sk_type == SOCK_STREAM)
623 goto e_inval;
624 if (optlen < 1)
625 goto e_inval;
626 if (val == -1)
627 val = 1;
628 if (val < 0 || val > 255)
629 goto e_inval;
630 inet->mc_ttl = val;
631 break;
632 case IP_MULTICAST_LOOP:
633 if (optlen < 1)
634 goto e_inval;
635 inet->mc_loop = !!val;
636 break;
637 case IP_UNICAST_IF:
638 {
639 struct net_device *dev = NULL;
640 int ifindex;
641
642 if (optlen != sizeof(int))
643 goto e_inval;
644
645 ifindex = (__force int)ntohl((__force __be32)val);
646 if (ifindex == 0) {
647 inet->uc_index = 0;
648 err = 0;
649 break;
650 }
651
652 dev = dev_get_by_index(sock_net(sk), ifindex);
653 err = -EADDRNOTAVAIL;
654 if (!dev)
655 break;
656 dev_put(dev);
657
658 err = -EINVAL;
659 if (sk->sk_bound_dev_if)
660 break;
661
662 inet->uc_index = ifindex;
663 err = 0;
664 break;
665 }
666 case IP_MULTICAST_IF:
667 {
668 struct ip_mreqn mreq;
669 struct net_device *dev = NULL;
670
671 if (sk->sk_type == SOCK_STREAM)
672 goto e_inval;
673 /*
674 * Check the arguments are allowable
675 */
676
677 if (optlen < sizeof(struct in_addr))
678 goto e_inval;
679
680 err = -EFAULT;
681 if (optlen >= sizeof(struct ip_mreqn)) {
682 if (copy_from_user(&mreq, optval, sizeof(mreq)))
683 break;
684 } else {
685 memset(&mreq, 0, sizeof(mreq));
686 if (optlen >= sizeof(struct ip_mreq)) {
687 if (copy_from_user(&mreq, optval,
688 sizeof(struct ip_mreq)))
689 break;
690 } else if (optlen >= sizeof(struct in_addr)) {
691 if (copy_from_user(&mreq.imr_address, optval,
692 sizeof(struct in_addr)))
693 break;
694 }
695 }
696
697 if (!mreq.imr_ifindex) {
698 if (mreq.imr_address.s_addr == htonl(INADDR_ANY)) {
699 inet->mc_index = 0;
700 inet->mc_addr = 0;
701 err = 0;
702 break;
703 }
704 dev = ip_dev_find(sock_net(sk), mreq.imr_address.s_addr);
705 if (dev)
706 mreq.imr_ifindex = dev->ifindex;
707 } else
708 dev = dev_get_by_index(sock_net(sk), mreq.imr_ifindex);
709
710
711 err = -EADDRNOTAVAIL;
712 if (!dev)
713 break;
714 dev_put(dev);
715
716 err = -EINVAL;
717 if (sk->sk_bound_dev_if &&
718 mreq.imr_ifindex != sk->sk_bound_dev_if)
719 break;
720
721 inet->mc_index = mreq.imr_ifindex;
722 inet->mc_addr = mreq.imr_address.s_addr;
723 err = 0;
724 break;
725 }
726
727 case IP_ADD_MEMBERSHIP:
728 case IP_DROP_MEMBERSHIP:
729 {
730 struct ip_mreqn mreq;
731
732 err = -EPROTO;
733 if (inet_sk(sk)->is_icsk)
734 break;
735
736 if (optlen < sizeof(struct ip_mreq))
737 goto e_inval;
738 err = -EFAULT;
739 if (optlen >= sizeof(struct ip_mreqn)) {
740 if (copy_from_user(&mreq, optval, sizeof(mreq)))
741 break;
742 } else {
743 memset(&mreq, 0, sizeof(mreq));
744 if (copy_from_user(&mreq, optval, sizeof(struct ip_mreq)))
745 break;
746 }
747
748 if (optname == IP_ADD_MEMBERSHIP)
749 err = ip_mc_join_group(sk, &mreq);
750 else
751 err = ip_mc_leave_group(sk, &mreq);
752 break;
753 }
754 case IP_MSFILTER:
755 {
756 struct ip_msfilter *msf;
757
758 if (optlen < IP_MSFILTER_SIZE(0))
759 goto e_inval;
760 if (optlen > sysctl_optmem_max) {
761 err = -ENOBUFS;
762 break;
763 }
764 msf = kmalloc(optlen, GFP_KERNEL);
765 if (!msf) {
766 err = -ENOBUFS;
767 break;
768 }
769 err = -EFAULT;
770 if (copy_from_user(msf, optval, optlen)) {
771 kfree(msf);
772 break;
773 }
774 /* numsrc >= (1G-4) overflow in 32 bits */
775 if (msf->imsf_numsrc >= 0x3ffffffcU ||
776 msf->imsf_numsrc > sysctl_igmp_max_msf) {
777 kfree(msf);
778 err = -ENOBUFS;
779 break;
780 }
781 if (IP_MSFILTER_SIZE(msf->imsf_numsrc) > optlen) {
782 kfree(msf);
783 err = -EINVAL;
784 break;
785 }
786 err = ip_mc_msfilter(sk, msf, 0);
787 kfree(msf);
788 break;
789 }
790 case IP_BLOCK_SOURCE:
791 case IP_UNBLOCK_SOURCE:
792 case IP_ADD_SOURCE_MEMBERSHIP:
793 case IP_DROP_SOURCE_MEMBERSHIP:
794 {
795 struct ip_mreq_source mreqs;
796 int omode, add;
797
798 if (optlen != sizeof(struct ip_mreq_source))
799 goto e_inval;
800 if (copy_from_user(&mreqs, optval, sizeof(mreqs))) {
801 err = -EFAULT;
802 break;
803 }
804 if (optname == IP_BLOCK_SOURCE) {
805 omode = MCAST_EXCLUDE;
806 add = 1;
807 } else if (optname == IP_UNBLOCK_SOURCE) {
808 omode = MCAST_EXCLUDE;
809 add = 0;
810 } else if (optname == IP_ADD_SOURCE_MEMBERSHIP) {
811 struct ip_mreqn mreq;
812
813 mreq.imr_multiaddr.s_addr = mreqs.imr_multiaddr;
814 mreq.imr_address.s_addr = mreqs.imr_interface;
815 mreq.imr_ifindex = 0;
816 err = ip_mc_join_group(sk, &mreq);
817 if (err && err != -EADDRINUSE)
818 break;
819 omode = MCAST_INCLUDE;
820 add = 1;
821 } else /* IP_DROP_SOURCE_MEMBERSHIP */ {
822 omode = MCAST_INCLUDE;
823 add = 0;
824 }
825 err = ip_mc_source(add, omode, sk, &mreqs, 0);
826 break;
827 }
828 case MCAST_JOIN_GROUP:
829 case MCAST_LEAVE_GROUP:
830 {
831 struct group_req greq;
832 struct sockaddr_in *psin;
833 struct ip_mreqn mreq;
834
835 if (optlen < sizeof(struct group_req))
836 goto e_inval;
837 err = -EFAULT;
838 if (copy_from_user(&greq, optval, sizeof(greq)))
839 break;
840 psin = (struct sockaddr_in *)&greq.gr_group;
841 if (psin->sin_family != AF_INET)
842 goto e_inval;
843 memset(&mreq, 0, sizeof(mreq));
844 mreq.imr_multiaddr = psin->sin_addr;
845 mreq.imr_ifindex = greq.gr_interface;
846
847 if (optname == MCAST_JOIN_GROUP)
848 err = ip_mc_join_group(sk, &mreq);
849 else
850 err = ip_mc_leave_group(sk, &mreq);
851 break;
852 }
853 case MCAST_JOIN_SOURCE_GROUP:
854 case MCAST_LEAVE_SOURCE_GROUP:
855 case MCAST_BLOCK_SOURCE:
856 case MCAST_UNBLOCK_SOURCE:
857 {
858 struct group_source_req greqs;
859 struct ip_mreq_source mreqs;
860 struct sockaddr_in *psin;
861 int omode, add;
862
863 if (optlen != sizeof(struct group_source_req))
864 goto e_inval;
865 if (copy_from_user(&greqs, optval, sizeof(greqs))) {
866 err = -EFAULT;
867 break;
868 }
869 if (greqs.gsr_group.ss_family != AF_INET ||
870 greqs.gsr_source.ss_family != AF_INET) {
871 err = -EADDRNOTAVAIL;
872 break;
873 }
874 psin = (struct sockaddr_in *)&greqs.gsr_group;
875 mreqs.imr_multiaddr = psin->sin_addr.s_addr;
876 psin = (struct sockaddr_in *)&greqs.gsr_source;
877 mreqs.imr_sourceaddr = psin->sin_addr.s_addr;
878 mreqs.imr_interface = 0; /* use index for mc_source */
879
880 if (optname == MCAST_BLOCK_SOURCE) {
881 omode = MCAST_EXCLUDE;
882 add = 1;
883 } else if (optname == MCAST_UNBLOCK_SOURCE) {
884 omode = MCAST_EXCLUDE;
885 add = 0;
886 } else if (optname == MCAST_JOIN_SOURCE_GROUP) {
887 struct ip_mreqn mreq;
888
889 psin = (struct sockaddr_in *)&greqs.gsr_group;
890 mreq.imr_multiaddr = psin->sin_addr;
891 mreq.imr_address.s_addr = 0;
892 mreq.imr_ifindex = greqs.gsr_interface;
893 err = ip_mc_join_group(sk, &mreq);
894 if (err && err != -EADDRINUSE)
895 break;
896 greqs.gsr_interface = mreq.imr_ifindex;
897 omode = MCAST_INCLUDE;
898 add = 1;
899 } else /* MCAST_LEAVE_SOURCE_GROUP */ {
900 omode = MCAST_INCLUDE;
901 add = 0;
902 }
903 err = ip_mc_source(add, omode, sk, &mreqs,
904 greqs.gsr_interface);
905 break;
906 }
907 case MCAST_MSFILTER:
908 {
909 struct sockaddr_in *psin;
910 struct ip_msfilter *msf = NULL;
911 struct group_filter *gsf = NULL;
912 int msize, i, ifindex;
913
914 if (optlen < GROUP_FILTER_SIZE(0))
915 goto e_inval;
916 if (optlen > sysctl_optmem_max) {
917 err = -ENOBUFS;
918 break;
919 }
920 gsf = kmalloc(optlen, GFP_KERNEL);
921 if (!gsf) {
922 err = -ENOBUFS;
923 break;
924 }
925 err = -EFAULT;
926 if (copy_from_user(gsf, optval, optlen))
927 goto mc_msf_out;
928
929 /* numsrc >= (4G-140)/128 overflow in 32 bits */
930 if (gsf->gf_numsrc >= 0x1ffffff ||
931 gsf->gf_numsrc > sysctl_igmp_max_msf) {
932 err = -ENOBUFS;
933 goto mc_msf_out;
934 }
935 if (GROUP_FILTER_SIZE(gsf->gf_numsrc) > optlen) {
936 err = -EINVAL;
937 goto mc_msf_out;
938 }
939 msize = IP_MSFILTER_SIZE(gsf->gf_numsrc);
940 msf = kmalloc(msize, GFP_KERNEL);
941 if (!msf) {
942 err = -ENOBUFS;
943 goto mc_msf_out;
944 }
945 ifindex = gsf->gf_interface;
946 psin = (struct sockaddr_in *)&gsf->gf_group;
947 if (psin->sin_family != AF_INET) {
948 err = -EADDRNOTAVAIL;
949 goto mc_msf_out;
950 }
951 msf->imsf_multiaddr = psin->sin_addr.s_addr;
952 msf->imsf_interface = 0;
953 msf->imsf_fmode = gsf->gf_fmode;
954 msf->imsf_numsrc = gsf->gf_numsrc;
955 err = -EADDRNOTAVAIL;
956 for (i = 0; i < gsf->gf_numsrc; ++i) {
957 psin = (struct sockaddr_in *)&gsf->gf_slist[i];
958
959 if (psin->sin_family != AF_INET)
960 goto mc_msf_out;
961 msf->imsf_slist[i] = psin->sin_addr.s_addr;
962 }
963 kfree(gsf);
964 gsf = NULL;
965
966 err = ip_mc_msfilter(sk, msf, ifindex);
967 mc_msf_out:
968 kfree(msf);
969 kfree(gsf);
970 break;
971 }
972 case IP_MULTICAST_ALL:
973 if (optlen < 1)
974 goto e_inval;
975 if (val != 0 && val != 1)
976 goto e_inval;
977 inet->mc_all = val;
978 break;
979 case IP_ROUTER_ALERT:
980 err = ip_ra_control(sk, val ? 1 : 0, NULL);
981 break;
982
983 case IP_FREEBIND:
984 if (optlen < 1)
985 goto e_inval;
986 inet->freebind = !!val;
987 break;
988
989 case IP_IPSEC_POLICY:
990 case IP_XFRM_POLICY:
991 err = -EPERM;
992 if (!capable(CAP_NET_ADMIN))
993 break;
994 err = xfrm_user_policy(sk, optname, optval, optlen);
995 break;
996
997 case IP_TRANSPARENT:
998 if (!!val && !capable(CAP_NET_RAW) && !capable(CAP_NET_ADMIN)) {
999 err = -EPERM;
1000 break;
1001 }
1002 if (optlen < 1)
1003 goto e_inval;
1004 inet->transparent = !!val;
1005 break;
1006
1007 case IP_MINTTL:
1008 if (optlen < 1)
1009 goto e_inval;
1010 if (val < 0 || val > 255)
1011 goto e_inval;
1012 inet->min_ttl = val;
1013 break;
1014
1015 default:
1016 err = -ENOPROTOOPT;
1017 break;
1018 }
1019 release_sock(sk);
1020 return err;
1021
1022 e_inval:
1023 release_sock(sk);
1024 return -EINVAL;
1025 }
1026
1027 /**
1028 * ipv4_pktinfo_prepare - transfert some info from rtable to skb
1029 * @sk: socket
1030 * @skb: buffer
1031 *
1032 * To support IP_CMSG_PKTINFO option, we store rt_iif and specific
1033 * destination in skb->cb[] before dst drop.
1034 * This way, receiver doesnt make cache line misses to read rtable.
1035 */
1036 void ipv4_pktinfo_prepare(struct sk_buff *skb)
1037 {
1038 struct in_pktinfo *pktinfo = PKTINFO_SKB_CB(skb);
1039
1040 if (skb_rtable(skb)) {
1041 pktinfo->ipi_ifindex = inet_iif(skb);
1042 pktinfo->ipi_spec_dst.s_addr = fib_compute_spec_dst(skb);
1043 } else {
1044 pktinfo->ipi_ifindex = 0;
1045 pktinfo->ipi_spec_dst.s_addr = 0;
1046 }
1047 skb_dst_drop(skb);
1048 }
1049
1050 int ip_setsockopt(struct sock *sk, int level,
1051 int optname, char __user *optval, unsigned int optlen)
1052 {
1053 int err;
1054
1055 if (level != SOL_IP)
1056 return -ENOPROTOOPT;
1057
1058 err = do_ip_setsockopt(sk, level, optname, optval, optlen);
1059 #ifdef CONFIG_NETFILTER
1060 /* we need to exclude all possible ENOPROTOOPTs except default case */
1061 if (err == -ENOPROTOOPT && optname != IP_HDRINCL &&
1062 optname != IP_IPSEC_POLICY &&
1063 optname != IP_XFRM_POLICY &&
1064 !ip_mroute_opt(optname)) {
1065 lock_sock(sk);
1066 err = nf_setsockopt(sk, PF_INET, optname, optval, optlen);
1067 release_sock(sk);
1068 }
1069 #endif
1070 return err;
1071 }
1072 EXPORT_SYMBOL(ip_setsockopt);
1073
1074 #ifdef CONFIG_COMPAT
1075 int compat_ip_setsockopt(struct sock *sk, int level, int optname,
1076 char __user *optval, unsigned int optlen)
1077 {
1078 int err;
1079
1080 if (level != SOL_IP)
1081 return -ENOPROTOOPT;
1082
1083 if (optname >= MCAST_JOIN_GROUP && optname <= MCAST_MSFILTER)
1084 return compat_mc_setsockopt(sk, level, optname, optval, optlen,
1085 ip_setsockopt);
1086
1087 err = do_ip_setsockopt(sk, level, optname, optval, optlen);
1088 #ifdef CONFIG_NETFILTER
1089 /* we need to exclude all possible ENOPROTOOPTs except default case */
1090 if (err == -ENOPROTOOPT && optname != IP_HDRINCL &&
1091 optname != IP_IPSEC_POLICY &&
1092 optname != IP_XFRM_POLICY &&
1093 !ip_mroute_opt(optname)) {
1094 lock_sock(sk);
1095 err = compat_nf_setsockopt(sk, PF_INET, optname,
1096 optval, optlen);
1097 release_sock(sk);
1098 }
1099 #endif
1100 return err;
1101 }
1102 EXPORT_SYMBOL(compat_ip_setsockopt);
1103 #endif
1104
1105 /*
1106 * Get the options. Note for future reference. The GET of IP options gets
1107 * the _received_ ones. The set sets the _sent_ ones.
1108 */
1109
1110 static int do_ip_getsockopt(struct sock *sk, int level, int optname,
1111 char __user *optval, int __user *optlen, unsigned int flags)
1112 {
1113 struct inet_sock *inet = inet_sk(sk);
1114 int val;
1115 int len;
1116
1117 if (level != SOL_IP)
1118 return -EOPNOTSUPP;
1119
1120 if (ip_mroute_opt(optname))
1121 return ip_mroute_getsockopt(sk, optname, optval, optlen);
1122
1123 if (get_user(len, optlen))
1124 return -EFAULT;
1125 if (len < 0)
1126 return -EINVAL;
1127
1128 lock_sock(sk);
1129
1130 switch (optname) {
1131 case IP_OPTIONS:
1132 {
1133 unsigned char optbuf[sizeof(struct ip_options)+40];
1134 struct ip_options *opt = (struct ip_options *)optbuf;
1135 struct ip_options_rcu *inet_opt;
1136
1137 inet_opt = rcu_dereference_protected(inet->inet_opt,
1138 sock_owned_by_user(sk));
1139 opt->optlen = 0;
1140 if (inet_opt)
1141 memcpy(optbuf, &inet_opt->opt,
1142 sizeof(struct ip_options) +
1143 inet_opt->opt.optlen);
1144 release_sock(sk);
1145
1146 if (opt->optlen == 0)
1147 return put_user(0, optlen);
1148
1149 ip_options_undo(opt);
1150
1151 len = min_t(unsigned int, len, opt->optlen);
1152 if (put_user(len, optlen))
1153 return -EFAULT;
1154 if (copy_to_user(optval, opt->__data, len))
1155 return -EFAULT;
1156 return 0;
1157 }
1158 case IP_PKTINFO:
1159 val = (inet->cmsg_flags & IP_CMSG_PKTINFO) != 0;
1160 break;
1161 case IP_RECVTTL:
1162 val = (inet->cmsg_flags & IP_CMSG_TTL) != 0;
1163 break;
1164 case IP_RECVTOS:
1165 val = (inet->cmsg_flags & IP_CMSG_TOS) != 0;
1166 break;
1167 case IP_RECVOPTS:
1168 val = (inet->cmsg_flags & IP_CMSG_RECVOPTS) != 0;
1169 break;
1170 case IP_RETOPTS:
1171 val = (inet->cmsg_flags & IP_CMSG_RETOPTS) != 0;
1172 break;
1173 case IP_PASSSEC:
1174 val = (inet->cmsg_flags & IP_CMSG_PASSSEC) != 0;
1175 break;
1176 case IP_RECVORIGDSTADDR:
1177 val = (inet->cmsg_flags & IP_CMSG_ORIGDSTADDR) != 0;
1178 break;
1179 case IP_TOS:
1180 val = inet->tos;
1181 break;
1182 case IP_TTL:
1183 val = (inet->uc_ttl == -1 ?
1184 sysctl_ip_default_ttl :
1185 inet->uc_ttl);
1186 break;
1187 case IP_HDRINCL:
1188 val = inet->hdrincl;
1189 break;
1190 case IP_NODEFRAG:
1191 val = inet->nodefrag;
1192 break;
1193 case IP_MTU_DISCOVER:
1194 val = inet->pmtudisc;
1195 break;
1196 case IP_MTU:
1197 {
1198 struct dst_entry *dst;
1199 val = 0;
1200 dst = sk_dst_get(sk);
1201 if (dst) {
1202 val = dst_mtu(dst);
1203 dst_release(dst);
1204 }
1205 if (!val) {
1206 release_sock(sk);
1207 return -ENOTCONN;
1208 }
1209 break;
1210 }
1211 case IP_RECVERR:
1212 val = inet->recverr;
1213 break;
1214 case IP_MULTICAST_TTL:
1215 val = inet->mc_ttl;
1216 break;
1217 case IP_MULTICAST_LOOP:
1218 val = inet->mc_loop;
1219 break;
1220 case IP_UNICAST_IF:
1221 val = (__force int)htonl((__u32) inet->uc_index);
1222 break;
1223 case IP_MULTICAST_IF:
1224 {
1225 struct in_addr addr;
1226 len = min_t(unsigned int, len, sizeof(struct in_addr));
1227 addr.s_addr = inet->mc_addr;
1228 release_sock(sk);
1229
1230 if (put_user(len, optlen))
1231 return -EFAULT;
1232 if (copy_to_user(optval, &addr, len))
1233 return -EFAULT;
1234 return 0;
1235 }
1236 case IP_MSFILTER:
1237 {
1238 struct ip_msfilter msf;
1239 int err;
1240
1241 if (len < IP_MSFILTER_SIZE(0)) {
1242 release_sock(sk);
1243 return -EINVAL;
1244 }
1245 if (copy_from_user(&msf, optval, IP_MSFILTER_SIZE(0))) {
1246 release_sock(sk);
1247 return -EFAULT;
1248 }
1249 err = ip_mc_msfget(sk, &msf,
1250 (struct ip_msfilter __user *)optval, optlen);
1251 release_sock(sk);
1252 return err;
1253 }
1254 case MCAST_MSFILTER:
1255 {
1256 struct group_filter gsf;
1257 int err;
1258
1259 if (len < GROUP_FILTER_SIZE(0)) {
1260 release_sock(sk);
1261 return -EINVAL;
1262 }
1263 if (copy_from_user(&gsf, optval, GROUP_FILTER_SIZE(0))) {
1264 release_sock(sk);
1265 return -EFAULT;
1266 }
1267 err = ip_mc_gsfget(sk, &gsf,
1268 (struct group_filter __user *)optval,
1269 optlen);
1270 release_sock(sk);
1271 return err;
1272 }
1273 case IP_MULTICAST_ALL:
1274 val = inet->mc_all;
1275 break;
1276 case IP_PKTOPTIONS:
1277 {
1278 struct msghdr msg;
1279
1280 release_sock(sk);
1281
1282 if (sk->sk_type != SOCK_STREAM)
1283 return -ENOPROTOOPT;
1284
1285 msg.msg_control = optval;
1286 msg.msg_controllen = len;
1287 msg.msg_flags = flags;
1288
1289 if (inet->cmsg_flags & IP_CMSG_PKTINFO) {
1290 struct in_pktinfo info;
1291
1292 info.ipi_addr.s_addr = inet->inet_rcv_saddr;
1293 info.ipi_spec_dst.s_addr = inet->inet_rcv_saddr;
1294 info.ipi_ifindex = inet->mc_index;
1295 put_cmsg(&msg, SOL_IP, IP_PKTINFO, sizeof(info), &info);
1296 }
1297 if (inet->cmsg_flags & IP_CMSG_TTL) {
1298 int hlim = inet->mc_ttl;
1299 put_cmsg(&msg, SOL_IP, IP_TTL, sizeof(hlim), &hlim);
1300 }
1301 if (inet->cmsg_flags & IP_CMSG_TOS) {
1302 int tos = inet->rcv_tos;
1303 put_cmsg(&msg, SOL_IP, IP_TOS, sizeof(tos), &tos);
1304 }
1305 len -= msg.msg_controllen;
1306 return put_user(len, optlen);
1307 }
1308 case IP_FREEBIND:
1309 val = inet->freebind;
1310 break;
1311 case IP_TRANSPARENT:
1312 val = inet->transparent;
1313 break;
1314 case IP_MINTTL:
1315 val = inet->min_ttl;
1316 break;
1317 default:
1318 release_sock(sk);
1319 return -ENOPROTOOPT;
1320 }
1321 release_sock(sk);
1322
1323 if (len < sizeof(int) && len > 0 && val >= 0 && val <= 255) {
1324 unsigned char ucval = (unsigned char)val;
1325 len = 1;
1326 if (put_user(len, optlen))
1327 return -EFAULT;
1328 if (copy_to_user(optval, &ucval, 1))
1329 return -EFAULT;
1330 } else {
1331 len = min_t(unsigned int, sizeof(int), len);
1332 if (put_user(len, optlen))
1333 return -EFAULT;
1334 if (copy_to_user(optval, &val, len))
1335 return -EFAULT;
1336 }
1337 return 0;
1338 }
1339
1340 int ip_getsockopt(struct sock *sk, int level,
1341 int optname, char __user *optval, int __user *optlen)
1342 {
1343 int err;
1344
1345 err = do_ip_getsockopt(sk, level, optname, optval, optlen, 0);
1346 #ifdef CONFIG_NETFILTER
1347 /* we need to exclude all possible ENOPROTOOPTs except default case */
1348 if (err == -ENOPROTOOPT && optname != IP_PKTOPTIONS &&
1349 !ip_mroute_opt(optname)) {
1350 int len;
1351
1352 if (get_user(len, optlen))
1353 return -EFAULT;
1354
1355 lock_sock(sk);
1356 err = nf_getsockopt(sk, PF_INET, optname, optval,
1357 &len);
1358 release_sock(sk);
1359 if (err >= 0)
1360 err = put_user(len, optlen);
1361 return err;
1362 }
1363 #endif
1364 return err;
1365 }
1366 EXPORT_SYMBOL(ip_getsockopt);
1367
1368 #ifdef CONFIG_COMPAT
1369 int compat_ip_getsockopt(struct sock *sk, int level, int optname,
1370 char __user *optval, int __user *optlen)
1371 {
1372 int err;
1373
1374 if (optname == MCAST_MSFILTER)
1375 return compat_mc_getsockopt(sk, level, optname, optval, optlen,
1376 ip_getsockopt);
1377
1378 err = do_ip_getsockopt(sk, level, optname, optval, optlen,
1379 MSG_CMSG_COMPAT);
1380
1381 #ifdef CONFIG_NETFILTER
1382 /* we need to exclude all possible ENOPROTOOPTs except default case */
1383 if (err == -ENOPROTOOPT && optname != IP_PKTOPTIONS &&
1384 !ip_mroute_opt(optname)) {
1385 int len;
1386
1387 if (get_user(len, optlen))
1388 return -EFAULT;
1389
1390 lock_sock(sk);
1391 err = compat_nf_getsockopt(sk, PF_INET, optname, optval, &len);
1392 release_sock(sk);
1393 if (err >= 0)
1394 err = put_user(len, optlen);
1395 return err;
1396 }
1397 #endif
1398 return err;
1399 }
1400 EXPORT_SYMBOL(compat_ip_getsockopt);
1401 #endif
Linux kernel - Deliverables
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