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26#include <linux/gfp.h>
27#include <linux/kernel.h>
28#include <linux/net.h>
29#include <linux/poll.h>
30#include <net/sock.h>
31#include <net/tcp_states.h>
32
33#include <linux/phonet.h>
34#include <linux/export.h>
35#include <net/phonet/phonet.h>
36#include <net/phonet/pep.h>
37#include <net/phonet/pn_dev.h>
38
39static int pn_socket_release(struct socket *sock)
40{
41 struct sock *sk = sock->sk;
42
43 if (sk) {
44 sock->sk = NULL;
45 sk->sk_prot->close(sk, 0);
46 }
47 return 0;
48}
49
50#define PN_HASHSIZE 16
51#define PN_HASHMASK (PN_HASHSIZE-1)
52
53
54static struct {
55 struct hlist_head hlist[PN_HASHSIZE];
56 struct mutex lock;
57} pnsocks;
58
59void __init pn_sock_init(void)
60{
61 unsigned int i;
62
63 for (i = 0; i < PN_HASHSIZE; i++)
64 INIT_HLIST_HEAD(pnsocks.hlist + i);
65 mutex_init(&pnsocks.lock);
66}
67
68static struct hlist_head *pn_hash_list(u16 obj)
69{
70 return pnsocks.hlist + (obj & PN_HASHMASK);
71}
72
73
74
75
76
77struct sock *pn_find_sock_by_sa(struct net *net, const struct sockaddr_pn *spn)
78{
79 struct sock *sknode;
80 struct sock *rval = NULL;
81 u16 obj = pn_sockaddr_get_object(spn);
82 u8 res = spn->spn_resource;
83 struct hlist_head *hlist = pn_hash_list(obj);
84
85 rcu_read_lock();
86 sk_for_each_rcu(sknode, hlist) {
87 struct pn_sock *pn = pn_sk(sknode);
88 BUG_ON(!pn->sobject);
89
90 if (!net_eq(sock_net(sknode), net))
91 continue;
92 if (pn_port(obj)) {
93
94 if (pn_port(pn->sobject) != pn_port(obj))
95 continue;
96 } else {
97
98 if (pn->resource != res)
99 continue;
100 }
101 if (pn_addr(pn->sobject) &&
102 pn_addr(pn->sobject) != pn_addr(obj))
103 continue;
104
105 rval = sknode;
106 sock_hold(sknode);
107 break;
108 }
109 rcu_read_unlock();
110
111 return rval;
112}
113
114
115void pn_deliver_sock_broadcast(struct net *net, struct sk_buff *skb)
116{
117 struct hlist_head *hlist = pnsocks.hlist;
118 unsigned int h;
119
120 rcu_read_lock();
121 for (h = 0; h < PN_HASHSIZE; h++) {
122 struct sock *sknode;
123
124 sk_for_each(sknode, hlist) {
125 struct sk_buff *clone;
126
127 if (!net_eq(sock_net(sknode), net))
128 continue;
129 if (!sock_flag(sknode, SOCK_BROADCAST))
130 continue;
131
132 clone = skb_clone(skb, GFP_ATOMIC);
133 if (clone) {
134 sock_hold(sknode);
135 sk_receive_skb(sknode, clone, 0);
136 }
137 }
138 hlist++;
139 }
140 rcu_read_unlock();
141}
142
143void pn_sock_hash(struct sock *sk)
144{
145 struct hlist_head *hlist = pn_hash_list(pn_sk(sk)->sobject);
146
147 mutex_lock(&pnsocks.lock);
148 sk_add_node_rcu(sk, hlist);
149 mutex_unlock(&pnsocks.lock);
150}
151EXPORT_SYMBOL(pn_sock_hash);
152
153void pn_sock_unhash(struct sock *sk)
154{
155 mutex_lock(&pnsocks.lock);
156 sk_del_node_init_rcu(sk);
157 mutex_unlock(&pnsocks.lock);
158 pn_sock_unbind_all_res(sk);
159 synchronize_rcu();
160}
161EXPORT_SYMBOL(pn_sock_unhash);
162
163static DEFINE_MUTEX(port_mutex);
164
165static int pn_socket_bind(struct socket *sock, struct sockaddr *addr, int len)
166{
167 struct sock *sk = sock->sk;
168 struct pn_sock *pn = pn_sk(sk);
169 struct sockaddr_pn *spn = (struct sockaddr_pn *)addr;
170 int err;
171 u16 handle;
172 u8 saddr;
173
174 if (sk->sk_prot->bind)
175 return sk->sk_prot->bind(sk, addr, len);
176
177 if (len < sizeof(struct sockaddr_pn))
178 return -EINVAL;
179 if (spn->spn_family != AF_PHONET)
180 return -EAFNOSUPPORT;
181
182 handle = pn_sockaddr_get_object((struct sockaddr_pn *)addr);
183 saddr = pn_addr(handle);
184 if (saddr && phonet_address_lookup(sock_net(sk), saddr))
185 return -EADDRNOTAVAIL;
186
187 lock_sock(sk);
188 if (sk->sk_state != TCP_CLOSE || pn_port(pn->sobject)) {
189 err = -EINVAL;
190 goto out;
191 }
192 WARN_ON(sk_hashed(sk));
193 mutex_lock(&port_mutex);
194 err = sk->sk_prot->get_port(sk, pn_port(handle));
195 if (err)
196 goto out_port;
197
198
199 pn->sobject = pn_object(saddr, pn_port(pn->sobject));
200 pn->resource = spn->spn_resource;
201
202
203 sk->sk_prot->hash(sk);
204out_port:
205 mutex_unlock(&port_mutex);
206out:
207 release_sock(sk);
208 return err;
209}
210
211static int pn_socket_autobind(struct socket *sock)
212{
213 struct sockaddr_pn sa;
214 int err;
215
216 memset(&sa, 0, sizeof(sa));
217 sa.spn_family = AF_PHONET;
218 err = pn_socket_bind(sock, (struct sockaddr *)&sa,
219 sizeof(struct sockaddr_pn));
220 if (err != -EINVAL)
221 return err;
222 BUG_ON(!pn_port(pn_sk(sock->sk)->sobject));
223 return 0;
224}
225
226static int pn_socket_connect(struct socket *sock, struct sockaddr *addr,
227 int len, int flags)
228{
229 struct sock *sk = sock->sk;
230 struct pn_sock *pn = pn_sk(sk);
231 struct sockaddr_pn *spn = (struct sockaddr_pn *)addr;
232 struct task_struct *tsk = current;
233 long timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
234 int err;
235
236 if (pn_socket_autobind(sock))
237 return -ENOBUFS;
238 if (len < sizeof(struct sockaddr_pn))
239 return -EINVAL;
240 if (spn->spn_family != AF_PHONET)
241 return -EAFNOSUPPORT;
242
243 lock_sock(sk);
244
245 switch (sock->state) {
246 case SS_UNCONNECTED:
247 if (sk->sk_state != TCP_CLOSE) {
248 err = -EISCONN;
249 goto out;
250 }
251 break;
252 case SS_CONNECTING:
253 err = -EALREADY;
254 goto out;
255 default:
256 err = -EISCONN;
257 goto out;
258 }
259
260 pn->dobject = pn_sockaddr_get_object(spn);
261 pn->resource = pn_sockaddr_get_resource(spn);
262 sock->state = SS_CONNECTING;
263
264 err = sk->sk_prot->connect(sk, addr, len);
265 if (err) {
266 sock->state = SS_UNCONNECTED;
267 pn->dobject = 0;
268 goto out;
269 }
270
271 while (sk->sk_state == TCP_SYN_SENT) {
272 DEFINE_WAIT(wait);
273
274 if (!timeo) {
275 err = -EINPROGRESS;
276 goto out;
277 }
278 if (signal_pending(tsk)) {
279 err = sock_intr_errno(timeo);
280 goto out;
281 }
282
283 prepare_to_wait_exclusive(sk_sleep(sk), &wait,
284 TASK_INTERRUPTIBLE);
285 release_sock(sk);
286 timeo = schedule_timeout(timeo);
287 lock_sock(sk);
288 finish_wait(sk_sleep(sk), &wait);
289 }
290
291 if ((1 << sk->sk_state) & (TCPF_SYN_RECV|TCPF_ESTABLISHED))
292 err = 0;
293 else if (sk->sk_state == TCP_CLOSE_WAIT)
294 err = -ECONNRESET;
295 else
296 err = -ECONNREFUSED;
297 sock->state = err ? SS_UNCONNECTED : SS_CONNECTED;
298out:
299 release_sock(sk);
300 return err;
301}
302
303static int pn_socket_accept(struct socket *sock, struct socket *newsock,
304 int flags)
305{
306 struct sock *sk = sock->sk;
307 struct sock *newsk;
308 int err;
309
310 if (unlikely(sk->sk_state != TCP_LISTEN))
311 return -EINVAL;
312
313 newsk = sk->sk_prot->accept(sk, flags, &err);
314 if (!newsk)
315 return err;
316
317 lock_sock(newsk);
318 sock_graft(newsk, newsock);
319 newsock->state = SS_CONNECTED;
320 release_sock(newsk);
321 return 0;
322}
323
324static int pn_socket_getname(struct socket *sock, struct sockaddr *addr,
325 int *sockaddr_len, int peer)
326{
327 struct sock *sk = sock->sk;
328 struct pn_sock *pn = pn_sk(sk);
329
330 memset(addr, 0, sizeof(struct sockaddr_pn));
331 addr->sa_family = AF_PHONET;
332 if (!peer)
333 pn_sockaddr_set_object((struct sockaddr_pn *)addr,
334 pn->sobject);
335
336 *sockaddr_len = sizeof(struct sockaddr_pn);
337 return 0;
338}
339
340static unsigned int pn_socket_poll(struct file *file, struct socket *sock,
341 poll_table *wait)
342{
343 struct sock *sk = sock->sk;
344 struct pep_sock *pn = pep_sk(sk);
345 unsigned int mask = 0;
346
347 poll_wait(file, sk_sleep(sk), wait);
348
349 if (sk->sk_state == TCP_CLOSE)
350 return POLLERR;
351 if (!skb_queue_empty(&sk->sk_receive_queue))
352 mask |= POLLIN | POLLRDNORM;
353 if (!skb_queue_empty(&pn->ctrlreq_queue))
354 mask |= POLLPRI;
355 if (!mask && sk->sk_state == TCP_CLOSE_WAIT)
356 return POLLHUP;
357
358 if (sk->sk_state == TCP_ESTABLISHED &&
359 atomic_read(&sk->sk_wmem_alloc) < sk->sk_sndbuf &&
360 atomic_read(&pn->tx_credits))
361 mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
362
363 return mask;
364}
365
366static int pn_socket_ioctl(struct socket *sock, unsigned int cmd,
367 unsigned long arg)
368{
369 struct sock *sk = sock->sk;
370 struct pn_sock *pn = pn_sk(sk);
371
372 if (cmd == SIOCPNGETOBJECT) {
373 struct net_device *dev;
374 u16 handle;
375 u8 saddr;
376
377 if (get_user(handle, (__u16 __user *)arg))
378 return -EFAULT;
379
380 lock_sock(sk);
381 if (sk->sk_bound_dev_if)
382 dev = dev_get_by_index(sock_net(sk),
383 sk->sk_bound_dev_if);
384 else
385 dev = phonet_device_get(sock_net(sk));
386 if (dev && (dev->flags & IFF_UP))
387 saddr = phonet_address_get(dev, pn_addr(handle));
388 else
389 saddr = PN_NO_ADDR;
390 release_sock(sk);
391
392 if (dev)
393 dev_put(dev);
394 if (saddr == PN_NO_ADDR)
395 return -EHOSTUNREACH;
396
397 handle = pn_object(saddr, pn_port(pn->sobject));
398 return put_user(handle, (__u16 __user *)arg);
399 }
400
401 return sk->sk_prot->ioctl(sk, cmd, arg);
402}
403
404static int pn_socket_listen(struct socket *sock, int backlog)
405{
406 struct sock *sk = sock->sk;
407 int err = 0;
408
409 if (pn_socket_autobind(sock))
410 return -ENOBUFS;
411
412 lock_sock(sk);
413 if (sock->state != SS_UNCONNECTED) {
414 err = -EINVAL;
415 goto out;
416 }
417
418 if (sk->sk_state != TCP_LISTEN) {
419 sk->sk_state = TCP_LISTEN;
420 sk->sk_ack_backlog = 0;
421 }
422 sk->sk_max_ack_backlog = backlog;
423out:
424 release_sock(sk);
425 return err;
426}
427
428static int pn_socket_sendmsg(struct kiocb *iocb, struct socket *sock,
429 struct msghdr *m, size_t total_len)
430{
431 struct sock *sk = sock->sk;
432
433 if (pn_socket_autobind(sock))
434 return -EAGAIN;
435
436 return sk->sk_prot->sendmsg(iocb, sk, m, total_len);
437}
438
439const struct proto_ops phonet_dgram_ops = {
440 .family = AF_PHONET,
441 .owner = THIS_MODULE,
442 .release = pn_socket_release,
443 .bind = pn_socket_bind,
444 .connect = sock_no_connect,
445 .socketpair = sock_no_socketpair,
446 .accept = sock_no_accept,
447 .getname = pn_socket_getname,
448 .poll = datagram_poll,
449 .ioctl = pn_socket_ioctl,
450 .listen = sock_no_listen,
451 .shutdown = sock_no_shutdown,
452 .setsockopt = sock_no_setsockopt,
453 .getsockopt = sock_no_getsockopt,
454#ifdef CONFIG_COMPAT
455 .compat_setsockopt = sock_no_setsockopt,
456 .compat_getsockopt = sock_no_getsockopt,
457#endif
458 .sendmsg = pn_socket_sendmsg,
459 .recvmsg = sock_common_recvmsg,
460 .mmap = sock_no_mmap,
461 .sendpage = sock_no_sendpage,
462};
463
464const struct proto_ops phonet_stream_ops = {
465 .family = AF_PHONET,
466 .owner = THIS_MODULE,
467 .release = pn_socket_release,
468 .bind = pn_socket_bind,
469 .connect = pn_socket_connect,
470 .socketpair = sock_no_socketpair,
471 .accept = pn_socket_accept,
472 .getname = pn_socket_getname,
473 .poll = pn_socket_poll,
474 .ioctl = pn_socket_ioctl,
475 .listen = pn_socket_listen,
476 .shutdown = sock_no_shutdown,
477 .setsockopt = sock_common_setsockopt,
478 .getsockopt = sock_common_getsockopt,
479#ifdef CONFIG_COMPAT
480 .compat_setsockopt = compat_sock_common_setsockopt,
481 .compat_getsockopt = compat_sock_common_getsockopt,
482#endif
483 .sendmsg = pn_socket_sendmsg,
484 .recvmsg = sock_common_recvmsg,
485 .mmap = sock_no_mmap,
486 .sendpage = sock_no_sendpage,
487};
488EXPORT_SYMBOL(phonet_stream_ops);
489
490
491int pn_sock_get_port(struct sock *sk, unsigned short sport)
492{
493 static int port_cur;
494 struct net *net = sock_net(sk);
495 struct pn_sock *pn = pn_sk(sk);
496 struct sockaddr_pn try_sa;
497 struct sock *tmpsk;
498
499 memset(&try_sa, 0, sizeof(struct sockaddr_pn));
500 try_sa.spn_family = AF_PHONET;
501 WARN_ON(!mutex_is_locked(&port_mutex));
502 if (!sport) {
503
504 int port, pmin, pmax;
505
506 phonet_get_local_port_range(&pmin, &pmax);
507 for (port = pmin; port <= pmax; port++) {
508 port_cur++;
509 if (port_cur < pmin || port_cur > pmax)
510 port_cur = pmin;
511
512 pn_sockaddr_set_port(&try_sa, port_cur);
513 tmpsk = pn_find_sock_by_sa(net, &try_sa);
514 if (tmpsk == NULL) {
515 sport = port_cur;
516 goto found;
517 } else
518 sock_put(tmpsk);
519 }
520 } else {
521
522 pn_sockaddr_set_port(&try_sa, sport);
523 tmpsk = pn_find_sock_by_sa(net, &try_sa);
524 if (tmpsk == NULL)
525
526 goto found;
527 else
528 sock_put(tmpsk);
529 }
530
531 return -EADDRINUSE;
532
533found:
534 pn->sobject = pn_object(pn_addr(pn->sobject), sport);
535 return 0;
536}
537EXPORT_SYMBOL(pn_sock_get_port);
538
539#ifdef CONFIG_PROC_FS
540static struct sock *pn_sock_get_idx(struct seq_file *seq, loff_t pos)
541{
542 struct net *net = seq_file_net(seq);
543 struct hlist_head *hlist = pnsocks.hlist;
544 struct sock *sknode;
545 unsigned int h;
546
547 for (h = 0; h < PN_HASHSIZE; h++) {
548 sk_for_each_rcu(sknode, hlist) {
549 if (!net_eq(net, sock_net(sknode)))
550 continue;
551 if (!pos)
552 return sknode;
553 pos--;
554 }
555 hlist++;
556 }
557 return NULL;
558}
559
560static struct sock *pn_sock_get_next(struct seq_file *seq, struct sock *sk)
561{
562 struct net *net = seq_file_net(seq);
563
564 do
565 sk = sk_next(sk);
566 while (sk && !net_eq(net, sock_net(sk)));
567
568 return sk;
569}
570
571static void *pn_sock_seq_start(struct seq_file *seq, loff_t *pos)
572 __acquires(rcu)
573{
574 rcu_read_lock();
575 return *pos ? pn_sock_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
576}
577
578static void *pn_sock_seq_next(struct seq_file *seq, void *v, loff_t *pos)
579{
580 struct sock *sk;
581
582 if (v == SEQ_START_TOKEN)
583 sk = pn_sock_get_idx(seq, 0);
584 else
585 sk = pn_sock_get_next(seq, v);
586 (*pos)++;
587 return sk;
588}
589
590static void pn_sock_seq_stop(struct seq_file *seq, void *v)
591 __releases(rcu)
592{
593 rcu_read_unlock();
594}
595
596static int pn_sock_seq_show(struct seq_file *seq, void *v)
597{
598 int len;
599
600 if (v == SEQ_START_TOKEN)
601 seq_printf(seq, "%s%n", "pt loc rem rs st tx_queue rx_queue "
602 " uid inode ref pointer drops", &len);
603 else {
604 struct sock *sk = v;
605 struct pn_sock *pn = pn_sk(sk);
606
607 seq_printf(seq, "%2d %04X:%04X:%02X %02X %08X:%08X %5d %lu "
608 "%d %pK %d%n",
609 sk->sk_protocol, pn->sobject, pn->dobject,
610 pn->resource, sk->sk_state,
611 sk_wmem_alloc_get(sk), sk_rmem_alloc_get(sk),
612 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
613 sock_i_ino(sk),
614 atomic_read(&sk->sk_refcnt), sk,
615 atomic_read(&sk->sk_drops), &len);
616 }
617 seq_printf(seq, "%*s\n", 127 - len, "");
618 return 0;
619}
620
621static const struct seq_operations pn_sock_seq_ops = {
622 .start = pn_sock_seq_start,
623 .next = pn_sock_seq_next,
624 .stop = pn_sock_seq_stop,
625 .show = pn_sock_seq_show,
626};
627
628static int pn_sock_open(struct inode *inode, struct file *file)
629{
630 return seq_open_net(inode, file, &pn_sock_seq_ops,
631 sizeof(struct seq_net_private));
632}
633
634const struct file_operations pn_sock_seq_fops = {
635 .owner = THIS_MODULE,
636 .open = pn_sock_open,
637 .read = seq_read,
638 .llseek = seq_lseek,
639 .release = seq_release_net,
640};
641#endif
642
643static struct {
644 struct sock *sk[256];
645} pnres;
646
647
648
649
650struct sock *pn_find_sock_by_res(struct net *net, u8 res)
651{
652 struct sock *sk;
653
654 if (!net_eq(net, &init_net))
655 return NULL;
656
657 rcu_read_lock();
658 sk = rcu_dereference(pnres.sk[res]);
659 if (sk)
660 sock_hold(sk);
661 rcu_read_unlock();
662 return sk;
663}
664
665static DEFINE_MUTEX(resource_mutex);
666
667int pn_sock_bind_res(struct sock *sk, u8 res)
668{
669 int ret = -EADDRINUSE;
670
671 if (!net_eq(sock_net(sk), &init_net))
672 return -ENOIOCTLCMD;
673 if (!capable(CAP_SYS_ADMIN))
674 return -EPERM;
675 if (pn_socket_autobind(sk->sk_socket))
676 return -EAGAIN;
677
678 mutex_lock(&resource_mutex);
679 if (pnres.sk[res] == NULL) {
680 sock_hold(sk);
681 rcu_assign_pointer(pnres.sk[res], sk);
682 ret = 0;
683 }
684 mutex_unlock(&resource_mutex);
685 return ret;
686}
687
688int pn_sock_unbind_res(struct sock *sk, u8 res)
689{
690 int ret = -ENOENT;
691
692 if (!capable(CAP_SYS_ADMIN))
693 return -EPERM;
694
695 mutex_lock(&resource_mutex);
696 if (pnres.sk[res] == sk) {
697 RCU_INIT_POINTER(pnres.sk[res], NULL);
698 ret = 0;
699 }
700 mutex_unlock(&resource_mutex);
701
702 if (ret == 0) {
703 synchronize_rcu();
704 sock_put(sk);
705 }
706 return ret;
707}
708
709void pn_sock_unbind_all_res(struct sock *sk)
710{
711 unsigned int res, match = 0;
712
713 mutex_lock(&resource_mutex);
714 for (res = 0; res < 256; res++) {
715 if (pnres.sk[res] == sk) {
716 RCU_INIT_POINTER(pnres.sk[res], NULL);
717 match++;
718 }
719 }
720 mutex_unlock(&resource_mutex);
721
722 while (match > 0) {
723 __sock_put(sk);
724 match--;
725 }
726
727}
728
729#ifdef CONFIG_PROC_FS
730static struct sock **pn_res_get_idx(struct seq_file *seq, loff_t pos)
731{
732 struct net *net = seq_file_net(seq);
733 unsigned int i;
734
735 if (!net_eq(net, &init_net))
736 return NULL;
737
738 for (i = 0; i < 256; i++) {
739 if (pnres.sk[i] == NULL)
740 continue;
741 if (!pos)
742 return pnres.sk + i;
743 pos--;
744 }
745 return NULL;
746}
747
748static struct sock **pn_res_get_next(struct seq_file *seq, struct sock **sk)
749{
750 struct net *net = seq_file_net(seq);
751 unsigned int i;
752
753 BUG_ON(!net_eq(net, &init_net));
754
755 for (i = (sk - pnres.sk) + 1; i < 256; i++)
756 if (pnres.sk[i])
757 return pnres.sk + i;
758 return NULL;
759}
760
761static void *pn_res_seq_start(struct seq_file *seq, loff_t *pos)
762 __acquires(resource_mutex)
763{
764 mutex_lock(&resource_mutex);
765 return *pos ? pn_res_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
766}
767
768static void *pn_res_seq_next(struct seq_file *seq, void *v, loff_t *pos)
769{
770 struct sock **sk;
771
772 if (v == SEQ_START_TOKEN)
773 sk = pn_res_get_idx(seq, 0);
774 else
775 sk = pn_res_get_next(seq, v);
776 (*pos)++;
777 return sk;
778}
779
780static void pn_res_seq_stop(struct seq_file *seq, void *v)
781 __releases(resource_mutex)
782{
783 mutex_unlock(&resource_mutex);
784}
785
786static int pn_res_seq_show(struct seq_file *seq, void *v)
787{
788 int len;
789
790 if (v == SEQ_START_TOKEN)
791 seq_printf(seq, "%s%n", "rs uid inode", &len);
792 else {
793 struct sock **psk = v;
794 struct sock *sk = *psk;
795
796 seq_printf(seq, "%02X %5u %lu%n",
797 (int) (psk - pnres.sk),
798 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
799 sock_i_ino(sk), &len);
800 }
801 seq_printf(seq, "%*s\n", 63 - len, "");
802 return 0;
803}
804
805static const struct seq_operations pn_res_seq_ops = {
806 .start = pn_res_seq_start,
807 .next = pn_res_seq_next,
808 .stop = pn_res_seq_stop,
809 .show = pn_res_seq_show,
810};
811
812static int pn_res_open(struct inode *inode, struct file *file)
813{
814 return seq_open_net(inode, file, &pn_res_seq_ops,
815 sizeof(struct seq_net_private));
816}
817
818const struct file_operations pn_res_seq_fops = {
819 .owner = THIS_MODULE,
820 .open = pn_res_open,
821 .read = seq_read,
822 .llseek = seq_lseek,
823 .release = seq_release_net,
824};
825#endif
826
