socket.c (5a2dd72abdae75ea2960145e0549635ce4e0be96) socket.c (c1dc13e9d0bc35a8d85bf4238c48c1b627d48f35)
1/*
2 * File: socket.c
3 *
4 * Phonet sockets
5 *
6 * Copyright (C) 2008 Nokia Corporation.
7 *
8 * Contact: Remi Denis-Courmont <remi.denis-courmont@nokia.com>

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407 return -EADDRINUSE;
408
409found:
410 mutex_unlock(&port_mutex);
411 pn->sobject = pn_object(pn_addr(pn->sobject), sport);
412 return 0;
413}
414EXPORT_SYMBOL(pn_sock_get_port);
1/*
2 * File: socket.c
3 *
4 * Phonet sockets
5 *
6 * Copyright (C) 2008 Nokia Corporation.
7 *
8 * Contact: Remi Denis-Courmont <remi.denis-courmont@nokia.com>

--- 398 unchanged lines hidden (view full) ---

407 return -EADDRINUSE;
408
409found:
410 mutex_unlock(&port_mutex);
411 pn->sobject = pn_object(pn_addr(pn->sobject), sport);
412 return 0;
413}
414EXPORT_SYMBOL(pn_sock_get_port);
415
416static struct sock *pn_sock_get_idx(struct seq_file *seq, loff_t pos)
417{
418 struct net *net = seq_file_net(seq);
419 struct hlist_node *node;
420 struct sock *sknode;
421
422 sk_for_each(sknode, node, &pnsocks.hlist) {
423 if (!net_eq(net, sock_net(sknode)))
424 continue;
425 if (!pos)
426 return sknode;
427 pos--;
428 }
429 return NULL;
430}
431
432static struct sock *pn_sock_get_next(struct seq_file *seq, struct sock *sk)
433{
434 struct net *net = seq_file_net(seq);
435
436 do
437 sk = sk_next(sk);
438 while (sk && !net_eq(net, sock_net(sk)));
439
440 return sk;
441}
442
443static void *pn_sock_seq_start(struct seq_file *seq, loff_t *pos)
444 __acquires(pnsocks.lock)
445{
446 spin_lock_bh(&pnsocks.lock);
447 return *pos ? pn_sock_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
448}
449
450static void *pn_sock_seq_next(struct seq_file *seq, void *v, loff_t *pos)
451{
452 struct sock *sk;
453
454 if (v == SEQ_START_TOKEN)
455 sk = pn_sock_get_idx(seq, 0);
456 else
457 sk = pn_sock_get_next(seq, v);
458 (*pos)++;
459 return sk;
460}
461
462static void pn_sock_seq_stop(struct seq_file *seq, void *v)
463 __releases(pnsocks.lock)
464{
465 spin_unlock_bh(&pnsocks.lock);
466}
467
468static int pn_sock_seq_show(struct seq_file *seq, void *v)
469{
470 int len;
471
472 if (v == SEQ_START_TOKEN)
473 seq_printf(seq, "%s%n", "pt loc rem rs st tx_queue rx_queue "
474 " uid inode ref pointer drops", &len);
475 else {
476 struct sock *sk = v;
477 struct pn_sock *pn = pn_sk(sk);
478
479 seq_printf(seq, "%2d %04X:%04X:%02X %02X %08X:%08X %5d %lu "
480 "%d %p %d%n",
481 sk->sk_protocol, pn->sobject, 0, pn->resource,
482 sk->sk_state,
483 sk_wmem_alloc_get(sk), sk_rmem_alloc_get(sk),
484 sock_i_uid(sk), sock_i_ino(sk),
485 atomic_read(&sk->sk_refcnt), sk,
486 atomic_read(&sk->sk_drops), &len);
487 }
488 seq_printf(seq, "%*s\n", 127 - len, "");
489 return 0;
490}
491
492static const struct seq_operations pn_sock_seq_ops = {
493 .start = pn_sock_seq_start,
494 .next = pn_sock_seq_next,
495 .stop = pn_sock_seq_stop,
496 .show = pn_sock_seq_show,
497};
498
499static int pn_sock_open(struct inode *inode, struct file *file)
500{
501 return seq_open(file, &pn_sock_seq_ops);
502}
503
504const struct file_operations pn_sock_seq_fops = {
505 .owner = THIS_MODULE,
506 .open = pn_sock_open,
507 .read = seq_read,
508 .llseek = seq_lseek,
509 .release = seq_release,
510};