Release 4.14 net/bluetooth/af_bluetooth.c

/*
   BlueZ - Bluetooth protocol stack for Linux
   Copyright (C) 2000-2001 Qualcomm Incorporated

   Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License version 2 as
   published by the Free Software Foundation;

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
   SOFTWARE IS DISCLAIMED.
*/

/* Bluetooth address family and sockets. */

#include <linux/module.h>
#include <linux/debugfs.h>
#include <linux/stringify.h>
#include <linux/sched/signal.h>

#include <asm/ioctls.h>

#include <net/bluetooth/bluetooth.h>
#include <linux/proc_fs.h>

#include "leds.h"
#include "selftest.h"

/* Bluetooth sockets */

#define BT_MAX_PROTO	8

static const struct net_proto_family *bt_proto[BT_MAX_PROTO];
static DEFINE_RWLOCK(bt_proto_lock);


static struct lock_class_key bt_lock_key[BT_MAX_PROTO];

static const char *const bt_key_strings[BT_MAX_PROTO] = {
	"sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP",
	"sk_lock-AF_BLUETOOTH-BTPROTO_HCI",
	"sk_lock-AF_BLUETOOTH-BTPROTO_SCO",
	"sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM",
	"sk_lock-AF_BLUETOOTH-BTPROTO_BNEP",
	"sk_lock-AF_BLUETOOTH-BTPROTO_CMTP",
	"sk_lock-AF_BLUETOOTH-BTPROTO_HIDP",
	"sk_lock-AF_BLUETOOTH-BTPROTO_AVDTP",
};


static struct lock_class_key bt_slock_key[BT_MAX_PROTO];

static const char *const bt_slock_key_strings[BT_MAX_PROTO] = {
	"slock-AF_BLUETOOTH-BTPROTO_L2CAP",
	"slock-AF_BLUETOOTH-BTPROTO_HCI",
	"slock-AF_BLUETOOTH-BTPROTO_SCO",
	"slock-AF_BLUETOOTH-BTPROTO_RFCOMM",
	"slock-AF_BLUETOOTH-BTPROTO_BNEP",
	"slock-AF_BLUETOOTH-BTPROTO_CMTP",
	"slock-AF_BLUETOOTH-BTPROTO_HIDP",
	"slock-AF_BLUETOOTH-BTPROTO_AVDTP",
};



void bt_sock_reclassify_lock(struct sock *sk, int proto)
{
	BUG_ON(!sk);
	BUG_ON(!sock_allow_reclassification(sk));

	sock_lock_init_class_and_name(sk,
			bt_slock_key_strings[proto], &bt_slock_key[proto],
				bt_key_strings[proto], &bt_lock_key[proto]);
}
Contributors
Person
Tokens
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CommitProp
Marcel Holtmann
47
85.45%
2
50.00%
Octavian Purdila
6
10.91%
1
25.00%
Hannes Frederic Sowa
2
3.64%
1
25.00%
Total
55
100.00%
4
100.00%


EXPORT_SYMBOL(bt_sock_reclassify_lock);



int bt_sock_register(int proto, const struct net_proto_family *ops)
{
	int err = 0;

	if (proto < 0 || proto >= BT_MAX_PROTO)
		return -EINVAL;

	write_lock(&bt_proto_lock);

	if (bt_proto[proto])
		err = -EEXIST;
	else
		bt_proto[proto] = ops;

	write_unlock(&bt_proto_lock);

	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds
36
52.94%
1
16.67%
Marcel Holtmann
22
32.35%
1
16.67%
Maksim Krasnyanskiy
5
7.35%
2
33.33%
Marcus Meissner
4
5.88%
1
16.67%
Stephen Hemminger
1
1.47%
1
16.67%
Total
68
100.00%
6
100.00%


EXPORT_SYMBOL(bt_sock_register);



void bt_sock_unregister(int proto)
{
	if (proto < 0 || proto >= BT_MAX_PROTO)
		return;

	write_lock(&bt_proto_lock);
	bt_proto[proto] = NULL;
	write_unlock(&bt_proto_lock);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds
16
42.11%
1
16.67%
Marcel Holtmann
12
31.58%
1
16.67%
Marcus Meissner
4
10.53%
1
16.67%
Maksim Krasnyanskiy
4
10.53%
2
33.33%
David Herrmann
2
5.26%
1
16.67%
Total
38
100.00%
6
100.00%


EXPORT_SYMBOL(bt_sock_unregister);



static int bt_sock_create(struct net *net, struct socket *sock, int proto,
			  int kern)
{
	int err;

	if (net != &init_net)
		return -EAFNOSUPPORT;

	if (proto < 0 || proto >= BT_MAX_PROTO)
		return -EINVAL;

	if (!bt_proto[proto])
		request_module("bt-proto-%d", proto);

	err = -EPROTONOSUPPORT;

	read_lock(&bt_proto_lock);

	if (bt_proto[proto] && try_module_get(bt_proto[proto]->owner)) {
		err = bt_proto[proto]->create(net, sock, proto, kern);
		if (!err)
			bt_sock_reclassify_lock(sock->sk, proto);
		module_put(bt_proto[proto]->owner);
	}

	read_unlock(&bt_proto_lock);

	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds
52
35.62%
2
16.67%
Maksim Krasnyanskiy
40
27.40%
2
16.67%
Eric W. Biedermann
18
12.33%
1
8.33%
Marcel Holtmann
13
8.90%
2
16.67%
Octavian Purdila
7
4.79%
1
8.33%
Dave Young
6
4.11%
1
8.33%
Eric Paris
5
3.42%
1
8.33%
Marcus Meissner
4
2.74%
1
8.33%
Randy Dunlap
1
0.68%
1
8.33%
Total
146
100.00%
12
100.00%



void bt_sock_link(struct bt_sock_list *l, struct sock *sk)
{
	write_lock(&l->lock);
	sk_add_node(sk, &l->head);
	write_unlock(&l->lock);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds
32
78.05%
1
25.00%
Arnaldo Carvalho de Melo
5
12.20%
1
25.00%
Gustavo Fernando Padovan
2
4.88%
1
25.00%
Maksim Krasnyanskiy
2
4.88%
1
25.00%
Total
41
100.00%
4
100.00%


EXPORT_SYMBOL(bt_sock_link);



void bt_sock_unlink(struct bt_sock_list *l, struct sock *sk)
{
	write_lock(&l->lock);
	sk_del_node_init(sk);
	write_unlock(&l->lock);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds
29
80.56%
1
25.00%
Arnaldo Carvalho de Melo
3
8.33%
1
25.00%
Gustavo Fernando Padovan
2
5.56%
1
25.00%
Maksim Krasnyanskiy
2
5.56%
1
25.00%
Total
36
100.00%
4
100.00%


EXPORT_SYMBOL(bt_sock_unlink);



void bt_accept_enqueue(struct sock *parent, struct sock *sk)
{
	BT_DBG("parent %p, sk %p", parent, sk);

	sock_hold(sk);
	lock_sock(sk);
	list_add_tail(&bt_sk(sk)->accept_q, &bt_sk(parent)->accept_q);
	bt_sk(sk)->parent = parent;
	release_sock(sk);
	parent->sk_ack_backlog++;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Maksim Krasnyanskiy
42
58.33%
2
40.00%
Linus Torvalds
19
26.39%
1
20.00%
Dean Jenkins
10
13.89%
1
20.00%
Arnaldo Carvalho de Melo
1
1.39%
1
20.00%
Total
72
100.00%
5
100.00%


EXPORT_SYMBOL(bt_accept_enqueue);

/* Calling function must hold the sk lock.
 * bt_sk(sk)->parent must be non-NULL meaning sk is in the parent list.
 */


void bt_accept_unlink(struct sock *sk)
{
	BT_DBG("sk %p state %d", sk, sk->sk_state);

	list_del_init(&bt_sk(sk)->accept_q);
	bt_sk(sk)->parent->sk_ack_backlog--;
	bt_sk(sk)->parent = NULL;
	sock_put(sk);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Maksim Krasnyanskiy
45
80.36%
2
50.00%
Linus Torvalds
9
16.07%
1
25.00%
Arnaldo Carvalho de Melo
2
3.57%
1
25.00%
Total
56
100.00%
4
100.00%


EXPORT_SYMBOL(bt_accept_unlink);



struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock)
{
	struct bt_sock *s, *n;
	struct sock *sk;

	BT_DBG("parent %p", parent);

restart:
	list_for_each_entry_safe(s, n, &bt_sk(parent)->accept_q, accept_q) {
		sk = (struct sock *)s;

		/* Prevent early freeing of sk due to unlink and sock_kill */
		sock_hold(sk);
		lock_sock(sk);

		/* Check sk has not already been unlinked via
                 * bt_accept_unlink() due to serialisation caused by sk locking
                 */
		if (!bt_sk(sk)->parent) {
			BT_DBG("sk %p, already unlinked", sk);
			release_sock(sk);
			sock_put(sk);

			/* Restart the loop as sk is no longer in the list
                         * and also avoid a potential infinite loop because
                         * list_for_each_entry_safe() is not thread safe.
                         */
			goto restart;
		}

		/* sk is safely in the parent list so reduce reference count */
		sock_put(sk);

		/* FIXME: Is this check still needed */
		if (sk->sk_state == BT_CLOSED) {
			bt_accept_unlink(sk);
			release_sock(sk);
			continue;
		}

		if (sk->sk_state == BT_CONNECTED || !newsock ||
		    test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) {
			bt_accept_unlink(sk);
			if (newsock)
				sock_graft(sk, newsock);

			release_sock(sk);
			return sk;
		}

		release_sock(sk);
	}

	return NULL;
}
Contributors
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Tokens
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CommitProp
Maksim Krasnyanskiy
115
60.21%
2
18.18%
Dean Jenkins
48
25.13%
1
9.09%
Gustavo Fernando Padovan
9
4.71%
2
18.18%
Marcel Holtmann
7
3.66%
2
18.18%
Geliang Tang
7
3.66%
1
9.09%
Yichen Zhao
2
1.05%
1
9.09%
Arnaldo Carvalho de Melo
2
1.05%
1
9.09%
Vinicius Costa Gomes
1
0.52%
1
9.09%
Total
191
100.00%
11
100.00%


EXPORT_SYMBOL(bt_accept_dequeue);



int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
		    int flags)
{
	int noblock = flags & MSG_DONTWAIT;
	struct sock *sk = sock->sk;
	struct sk_buff *skb;
	size_t copied;
	size_t skblen;
	int err;

	BT_DBG("sock %p sk %p len %zu", sock, sk, len);

	if (flags & MSG_OOB)
		return -EOPNOTSUPP;

	skb = skb_recv_datagram(sk, flags, noblock, &err);
	if (!skb) {
		if (sk->sk_shutdown & RCV_SHUTDOWN)
			return 0;

		return err;
	}

	skblen = skb->len;
	copied = skb->len;
	if (len < copied) {
		msg->msg_flags |= MSG_TRUNC;
		copied = len;
	}

	skb_reset_transport_header(skb);
	err = skb_copy_datagram_msg(skb, 0, msg, copied);
	if (err == 0) {
		sock_recv_ts_and_drops(msg, sk, skb);

		if (msg->msg_name && bt_sk(sk)->skb_msg_name)
			bt_sk(sk)->skb_msg_name(skb, msg->msg_name,
						&msg->msg_namelen);
	}

	skb_free_datagram(sk, skb);

	if (flags & MSG_TRUNC)
		copied = skblen;

	return err ? : copied;
}
Contributors
Person
Tokens
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CommitProp
Maksim Krasnyanskiy
144
63.44%
2
14.29%
Marcel Holtmann
45
19.82%
3
21.43%
Denis Kenzior
18
7.93%
1
7.14%
Andrei Emeltchenko
5
2.20%
1
7.14%
Stephen Hemminger
4
1.76%
1
7.14%
Arnaldo Carvalho de Melo
4
1.76%
2
14.29%
Ezequiel García
4
1.76%
1
7.14%
Neil Horman
1
0.44%
1
7.14%
David S. Miller
1
0.44%
1
7.14%
Luiz Augusto von Dentz
1
0.44%
1
7.14%
Total
227
100.00%
14
100.00%


EXPORT_SYMBOL(bt_sock_recvmsg);



static long bt_sock_data_wait(struct sock *sk, long timeo)
{
	DECLARE_WAITQUEUE(wait, current);

	add_wait_queue(sk_sleep(sk), &wait);
	for (;;) {
		set_current_state(TASK_INTERRUPTIBLE);

		if (!skb_queue_empty(&sk->sk_receive_queue))
			break;

		if (sk->sk_err || (sk->sk_shutdown & RCV_SHUTDOWN))
			break;

		if (signal_pending(current) || !timeo)
			break;

		sk_set_bit(SOCKWQ_ASYNC_WAITDATA, sk);
		release_sock(sk);
		timeo = schedule_timeout(timeo);
		lock_sock(sk);
		sk_clear_bit(SOCKWQ_ASYNC_WAITDATA, sk);
	}

	__set_current_state(TASK_RUNNING);
	remove_wait_queue(sk_sleep(sk), &wait);
	return timeo;
}

Contributors
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CommitProp
Mat Martineau
128
96.97%
1
50.00%
Eric Dumazet
4
3.03%
1
50.00%
Total
132
100.00%
2
100.00%



int bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg,
			   size_t size, int flags)
{
	struct sock *sk = sock->sk;
	int err = 0;
	size_t target, copied = 0;
	long timeo;

	if (flags & MSG_OOB)
		return -EOPNOTSUPP;

	BT_DBG("sk %p size %zu", sk, size);

	lock_sock(sk);

	target = sock_rcvlowat(sk, flags & MSG_WAITALL, size);
	timeo  = sock_rcvtimeo(sk, flags & MSG_DONTWAIT);

	do {
		struct sk_buff *skb;
		int chunk;

		skb = skb_dequeue(&sk->sk_receive_queue);
		if (!skb) {
			if (copied >= target)
				break;

			err = sock_error(sk);
			if (err)
				break;
			if (sk->sk_shutdown & RCV_SHUTDOWN)
				break;

			err = -EAGAIN;
			if (!timeo)
				break;

			timeo = bt_sock_data_wait(sk, timeo);

			if (signal_pending(current)) {
				err = sock_intr_errno(timeo);
				goto out;
			}
			continue;
		}

		chunk = min_t(unsigned int, skb->len, size);
		if (skb_copy_datagram_msg(skb, 0, msg, chunk)) {
			skb_queue_head(&sk->sk_receive_queue, skb);
			if (!copied)
				copied = -EFAULT;
			break;
		}
		copied += chunk;
		size   -= chunk;

		sock_recv_ts_and_drops(msg, sk, skb);

		if (!(flags & MSG_PEEK)) {
			int skb_len = skb_headlen(skb);

			if (chunk <= skb_len) {
				__skb_pull(skb, chunk);
			} else {
				struct sk_buff *frag;

				__skb_pull(skb, skb_len);
				chunk -= skb_len;

				skb_walk_frags(skb, frag) {
					if (chunk <= frag->len) {
						/* Pulling partial data */
						skb->len -= chunk;
						skb->data_len -= chunk;
						__skb_pull(frag, chunk);
						break;
					} else if (frag->len) {
						/* Pulling all frag data */
						chunk -= frag->len;
						skb->len -= frag->len;
						skb->data_len -= frag->len;
						__skb_pull(frag, frag->len);
					}
				}
			}

			if (skb->len) {
				skb_queue_head(&sk->sk_receive_queue, skb);
				break;
			}
			kfree_skb(skb);

		} else {
			/* put message back and return */
			skb_queue_head(&sk->sk_receive_queue, skb);
			break;
		}
	} while (size);

out:
	release_sock(sk);
	return copied ? : err;
}
Contributors
Person
Tokens
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CommitProp
Mat Martineau
438
98.87%
2
50.00%
Andrei Emeltchenko
4
0.90%
1
25.00%
David S. Miller
1
0.23%
1
25.00%
Total
443
100.00%
4
100.00%


EXPORT_SYMBOL(bt_sock_stream_recvmsg);



static inline unsigned int bt_accept_poll(struct sock *parent)
{
	struct bt_sock *s, *n;
	struct sock *sk;

	list_for_each_entry_safe(s, n, &bt_sk(parent)->accept_q, accept_q) {
		sk = (struct sock *)s;
		if (sk->sk_state == BT_CONNECTED ||
		    (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags) &&
		     sk->sk_state == BT_CONNECT2))
			return POLLIN | POLLRDNORM;
	}

	return 0;
}

Contributors
Person
Tokens
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CommitProp
Marcel Holtmann
70
83.33%
2
50.00%
Geliang Tang
7
8.33%
1
25.00%
Gustavo Fernando Padovan
7
8.33%
1
25.00%
Total
84
100.00%
4
100.00%



unsigned int bt_sock_poll(struct file *file, struct socket *sock,
			  poll_table *wait)
{
	struct sock *sk = sock->sk;
	unsigned int mask = 0;

	BT_DBG("sock %p, sk %p", sock, sk);

	poll_wait(file, sk_sleep(sk), wait);

	if (sk->sk_state == BT_LISTEN)
		return bt_accept_poll(sk);

	if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue))
		mask |= POLLERR |
			(sock_flag(sk, SOCK_SELECT_ERR_QUEUE) ? POLLPRI : 0);

	if (sk->sk_shutdown & RCV_SHUTDOWN)
		mask |= POLLRDHUP | POLLIN | POLLRDNORM;

	if (sk->sk_shutdown == SHUTDOWN_MASK)
		mask |= POLLHUP;

	if (!skb_queue_empty(&sk->sk_receive_queue))
		mask |= POLLIN | POLLRDNORM;

	if (sk->sk_state == BT_CLOSED)
		mask |= POLLHUP;

	if (sk->sk_state == BT_CONNECT ||
			sk->sk_state == BT_CONNECT2 ||
			sk->sk_state == BT_CONFIG)
		return mask;

	if (!test_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags) && sock_writeable(sk))
		mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
	else
		sk_set_bit(SOCKWQ_ASYNC_NOSPACE, sk);

	return mask;
}
Contributors
Person
Tokens
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CommitProp
Maksim Krasnyanskiy
129
58.11%
2
15.38%
Marcel Holtmann
22
9.91%
1
7.69%
Maxim Krasnyansky
15
6.76%
1
7.69%
Gustavo Fernando Padovan
14
6.31%
2
15.38%
Jacob E Keller
13
5.86%
2
15.38%
Davide Libenzi
12
5.41%
1
7.69%
Eric Dumazet
9
4.05%
3
23.08%
Arnaldo Carvalho de Melo
8
3.60%
1
7.69%
Total
222
100.00%
13
100.00%


EXPORT_SYMBOL(bt_sock_poll);



int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
	struct sock *sk = sock->sk;
	struct sk_buff *skb;
	long amount;
	int err;

	BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg);

	switch (cmd) {
	case TIOCOUTQ:
		if (sk->sk_state == BT_LISTEN)
			return -EINVAL;

		amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk);
		if (amount < 0)
			amount = 0;
		err = put_user(amount, (int __user *) arg);
		break;

	case TIOCINQ:
		if (sk->sk_state == BT_LISTEN)
			return -EINVAL;

		lock_sock(sk);
		skb = skb_peek(&sk->sk_receive_queue);
		amount = skb ? skb->len : 0;
		release_sock(sk);
		err = put_user(amount, (int __user *) arg);
		break;

	case SIOCGSTAMP:
		err = sock_get_timestamp(sk, (struct timeval __user *) arg);
		break;

	case SIOCGSTAMPNS:
		err = sock_get_timestampns(sk, (struct timespec __user *) arg);
		break;

	default:
		err = -ENOIOCTLCMD;
		break;
	}

	return err;
}
Contributors
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CommitProp
Marcel Holtmann
213
99.53%
2
66.67%
Eric Dumazet
1
0.47%
1
33.33%
Total
214
100.00%
3
100.00%


EXPORT_SYMBOL(bt_sock_ioctl);

/* This function expects the sk lock to be held when called */


int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo)
{
	DECLARE_WAITQUEUE(wait, current);
	int err = 0;

	BT_DBG("sk %p", sk);

	add_wait_queue(sk_sleep(sk), &wait);
	set_current_state(TASK_INTERRUPTIBLE);
	while (sk->sk_state != state) {
		if (!timeo) {
			err = -EINPROGRESS;
			break;
		}

		if (signal_pending(current)) {
			err = sock_intr_errno(timeo);
			break;
		}

		release_sock(sk);
		timeo = schedule_timeout(timeo);
		lock_sock(sk);
		set_current_state(TASK_INTERRUPTIBLE);

		err = sock_error(sk);
		if (err)
			break;
	}
	__set_current_state(TASK_RUNNING);
	remove_wait_queue(sk_sleep(sk), &wait);
	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Maksim Krasnyanskiy
120
82.76%
2
28.57%
Peter Hurley
11
7.59%
1
14.29%
Eric Dumazet
6
4.14%
1
14.29%
Benjamin LaHaise
4
2.76%
1
14.29%
Arnaldo Carvalho de Melo
3
2.07%
1
14.29%
Marcel Holtmann
1
0.69%
1
14.29%
Total
145
100.00%
7
100.00%


EXPORT_SYMBOL(bt_sock_wait_state);

/* This function expects the sk lock to be held when called */


int bt_sock_wait_ready(struct sock *sk, unsigned long flags)
{
	DECLARE_WAITQUEUE(wait, current);
	unsigned long timeo;
	int err = 0;

	BT_DBG("sk %p", sk);

	timeo = sock_sndtimeo(sk, flags & O_NONBLOCK);

	add_wait_queue(sk_sleep(sk), &wait);
	set_current_state(TASK_INTERRUPTIBLE);
	while (test_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags)) {
		if (!timeo) {
			err = -EAGAIN;
			break;
		}

		if (signal_pending(current)) {
			err = sock_intr_errno(timeo);
			break;
		}

		release_sock(sk);
		timeo = schedule_timeout(timeo);
		lock_sock(sk);
		set_current_state(TASK_INTERRUPTIBLE);

		err = sock_error(sk);
		if (err)
			break;
	}
	__set_current_state(TASK_RUNNING);
	remove_wait_queue(sk_sleep(sk), &wait);

	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Johan Hedberg
164
100.00%
1
100.00%
Total
164
100.00%
1
100.00%


EXPORT_SYMBOL(bt_sock_wait_ready);

#ifdef CONFIG_PROC_FS

struct bt_seq_state {
	
struct bt_sock_list *l;
};


static void *bt_seq_start(struct seq_file *seq, loff_t *pos)
	__acquires(seq->private->l->lock)
{
	struct bt_seq_state *s = seq->private;
	struct bt_sock_list *l = s->l;

	read_lock(&l->lock);
	return seq_hlist_start_head(&l->head, *pos);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Masatake YAMATO
64
100.00%
1
100.00%
Total
64
100.00%
1
100.00%



static void *bt_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
	struct bt_seq_state *s = seq->private;
	struct bt_sock_list *l = s->l;

	return seq_hlist_next(v, &l->head, pos);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Masatake YAMATO
51
100.00%
1
100.00%
Total
51
100.00%
1
100.00%


static void bt_seq_stop(struct seq_file *seq, void *v)
	__releases(seq->private->l->lock)
{
	struct bt_seq_state *s = seq->private;
	struct bt_sock_list *l = s->l;

	read_unlock(&l->lock);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Masatake YAMATO
51
100.00%
1
100.00%
Total
51
100.00%
1
100.00%



static int bt_seq_show(struct seq_file *seq, void *v)
{
	struct bt_seq_state *s = seq->private;
	struct bt_sock_list *l = s->l;

	if (v == SEQ_START_TOKEN) {
		seq_puts(seq ,"sk               RefCnt Rmem   Wmem   User   Inode  Parent");

		if (l->custom_seq_show) {
			seq_putc(seq, ' ');
			l->custom_seq_show(seq, v);
		}

		seq_putc(seq, '\n');
	} else {
		struct sock *sk = sk_entry(v);
		struct bt_sock *bt = bt_sk(sk);

		seq_printf(seq,
			   "%pK %-6d %-6u %-6u %-6u %-6lu %-6lu",
			   sk,
			   refcount_read(&sk->sk_refcnt),
			   sk_rmem_alloc_get(sk),
			   sk_wmem_alloc_get(sk),
			   from_kuid(seq_user_ns(seq), sock_i_uid(sk)),
			   sock_i_ino(sk),
			   bt->parent? sock_i_ino(bt->parent): 0LU);

		if (l->custom_seq_show) {
			seq_putc(seq, ' ');
			l->custom_seq_show(seq, v);
		}

		seq_putc(seq, '\n');
	}
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Masatake YAMATO
173
89.18%
1
16.67%
Andrei Emeltchenko
10
5.15%
1
16.67%
Eric W. Biedermann
8
4.12%
1
16.67%
Marcel Holtmann
2
1.03%
2
33.33%
Elena Reshetova
1
0.52%
1
16.67%
Total
194
100.00%
6
100.00%


static const struct seq_operations bt_seq_ops = {
	.start = bt_seq_start,
	.next  = bt_seq_next,
	.stop  = bt_seq_stop,
	.show  = bt_seq_show,
};



static int bt_seq_open(struct inode *inode, struct file *file)
{
	struct bt_sock_list *sk_list;
	struct bt_seq_state *s;

	sk_list = PDE_DATA(inode);
	s = __seq_open_private(file, &bt_seq_ops,
			       sizeof(struct bt_seq_state));
	if (!s)
		return -ENOMEM;

	s->l = sk_list;
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Masatake YAMATO
65
97.01%
1
33.33%
Andrei Emeltchenko
1
1.49%
1
33.33%
Al Viro
1
1.49%
1
33.33%
Total
67
100.00%
3
100.00%


static const struct file_operations bt_fops = {
	.open = bt_seq_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = seq_release_private
};



int bt_procfs_init(struct net *net, const char *name,
		   struct bt_sock_list *sk_list,
		   int (* seq_show)(struct seq_file *, void *))
{
	sk_list->custom_seq_show = seq_show;

	if (!proc_create_data(name, 0, net->proc_net, &bt_fops, sk_list))
		return -ENOMEM;
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Masatake YAMATO
56
84.85%
1
25.00%
Al Viro
6
9.09%
2
50.00%
Gao Feng
4
6.06%
1
25.00%
Total
66
100.00%
4
100.00%



void bt_procfs_cleanup(struct net *net, const char *name)
{
	remove_proc_entry(name, net->proc_net);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Masatake YAMATO
19
79.17%
1
50.00%
Gao Feng
5
20.83%
1
50.00%
Total
24
100.00%
2
100.00%

#else


int bt_procfs_init(struct net *net, const char *name,
		   struct bt_sock_list *sk_list,
		   int (* seq_show)(struct seq_file *, void *))
{
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Masatake YAMATO
37
100.00%
1
100.00%
Total
37
100.00%
1
100.00%



void bt_procfs_cleanup(struct net *net, const char *name)
{
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Masatake YAMATO
14
100.00%
1
100.00%
Total
14
100.00%
1
100.00%

#endif

EXPORT_SYMBOL(bt_procfs_init);

EXPORT_SYMBOL(bt_procfs_cleanup);


static const struct net_proto_family bt_sock_family_ops = {
	.owner	= THIS_MODULE,
	.family	= PF_BLUETOOTH,
	.create	= bt_sock_create,
};


struct dentry *bt_debugfs;

EXPORT_SYMBOL_GPL(bt_debugfs);


#define VERSION __stringify(BT_SUBSYS_VERSION) "." \
                __stringify(BT_SUBSYS_REVISION)



static int __init bt_init(void)
{
	int err;

	sock_skb_cb_check_size(sizeof(struct bt_skb_cb));

	BT_INFO("Core ver %s", VERSION);

	err = bt_selftest();
	if (err < 0)
		return err;

	bt_debugfs = debugfs_create_dir("bluetooth", NULL);

	bt_leds_init();

	err = bt_sysfs_init();
	if (err < 0)
		return err;

	err = sock_register(&bt_sock_family_ops);
	if (err < 0) {
		bt_sysfs_cleanup();
		return err;
	}

	BT_INFO("HCI device and connection manager initialized");

	err = hci_sock_init();
	if (err < 0)
		goto error;

	err = l2cap_init();
	if (err < 0)
		goto sock_err;

	err = sco_init();
	if (err < 0) {
		l2cap_exit();
		goto sock_err;
	}

	err = mgmt_init();
	if (err < 0) {
		sco_exit();
		l2cap_exit();
		goto sock_err;
	}

	return 0;

sock_err:
	hci_sock_cleanup();

error:
	sock_unregister(PF_BLUETOOTH);
	bt_sysfs_cleanup();

	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Marcel Holtmann
68
36.76%
6
50.00%
Gustavo Fernando Padovan
62
33.51%
1
8.33%
Maksim Krasnyanskiy
32
17.30%
3
25.00%
Johan Hedberg
22
11.89%
1
8.33%
Eyal Birger
1
0.54%
1
8.33%
Total
185
100.00%
12
100.00%



static void __exit bt_exit(void)
{
	mgmt_exit();

	sco_exit();

	l2cap_exit();

	hci_sock_cleanup();

	sock_unregister(PF_BLUETOOTH);

	bt_sysfs_cleanup();

	bt_leds_cleanup();

	debugfs_remove_recursive(bt_debugfs);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Maksim Krasnyanskiy
14
37.84%
1
12.50%
Marcel Holtmann
12
32.43%
4
50.00%
Gustavo Fernando Padovan
6
16.22%
1
12.50%
Johan Hedberg
3
8.11%
1
12.50%
Linus Torvalds
2
5.41%
1
12.50%
Total
37
100.00%
8
100.00%


subsys_initcall(bt_init);

module_exit(bt_exit);

MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Bluetooth Core ver " VERSION);

MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");

MODULE_ALIAS_NETPROTO(PF_BLUETOOTH);
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Maksim Krasnyanskiy
721
20.75%
7
7.22%
Marcel Holtmann
640
18.42%
25
25.77%
Masatake YAMATO
587
16.89%
1
1.03%
Mat Martineau
571
16.43%
2
2.06%
Linus Torvalds
226
6.50%
3
3.09%
Johan Hedberg
196
5.64%
3
3.09%
Gustavo Fernando Padovan
102
2.94%
5
5.15%
Dave Young
69
1.99%
1
1.03%
Dean Jenkins
59
1.70%
2
2.06%
Al Viro
35
1.01%
3
3.09%
Arnaldo Carvalho de Melo
35
1.01%
4
4.12%
Eric W. Biedermann
26
0.75%
2
2.06%
Eric Dumazet
20
0.58%
4
4.12%
Andrei Emeltchenko
20
0.58%
3
3.09%
Octavian Purdila
18
0.52%
1
1.03%
Denis Kenzior
18
0.52%
1
1.03%
Maxim Krasnyansky
15
0.43%
1
1.03%
Geliang Tang
14
0.40%
1
1.03%
Jacob E Keller
13
0.37%
2
2.06%
Davide Libenzi
12
0.35%
1
1.03%
Marcus Meissner
12
0.35%
1
1.03%
Peter Hurley
11
0.32%
1
1.03%
Stephen Hemminger
11
0.32%
3
3.09%
Gao Feng
9
0.26%
2
2.06%
Eric Paris
5
0.14%
1
1.03%
Ezequiel García
4
0.12%
1
1.03%
Benjamin LaHaise
4
0.12%
1
1.03%
Ingo Molnar
3
0.09%
1
1.03%
Jan Engelhardt
2
0.06%
1
1.03%
Hannes Frederic Sowa
2
0.06%
1
1.03%
David S. Miller
2
0.06%
1
1.03%
Yichen Zhao
2
0.06%
1
1.03%
David Herrmann
2
0.06%
1
1.03%
Randy Dunlap
1
0.03%
1
1.03%
Fabian Frederick
1
0.03%
1
1.03%
Luiz Augusto von Dentz
1
0.03%
1
1.03%
Neil Horman
1
0.03%
1
1.03%
Eyal Birger
1
0.03%
1
1.03%
Lin Zhang
1
0.03%
1
1.03%
Vinicius Costa Gomes
1
0.03%
1
1.03%
Elena Reshetova
1
0.03%
1
1.03%
Hideaki Yoshifuji / 吉藤英明
1
0.03%
1
1.03%
Total
3475
100.00%
97
100.00%
Directory: net/bluetooth

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