1 files changed, 355 insertions, 0 deletions
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
new file mode 100644
index 00000000000..1650c6bf699
--- /dev/null
+++ b/net/bluetooth/af_bluetooth.c
@@ -0,0 +1,355 @@
+/* 
+   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/config.h>
+#include <linux/module.h>
+
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/init.h>
+#include <linux/poll.h>
+#include <linux/proc_fs.h>
+#include <net/sock.h>
+
+#if defined(CONFIG_KMOD)
+#include <linux/kmod.h>
+#endif
+
+#include <net/bluetooth/bluetooth.h>
+
+#ifndef CONFIG_BT_SOCK_DEBUG
+#undef  BT_DBG
+#define BT_DBG(D...)
+#endif
+
+#define VERSION "2.7"
+
+struct proc_dir_entry *proc_bt;
+EXPORT_SYMBOL(proc_bt);
+
+/* Bluetooth sockets */
+#define BT_MAX_PROTO	8
+static struct net_proto_family *bt_proto[BT_MAX_PROTO];
+
+int bt_sock_register(int proto, struct net_proto_family *ops)
+{
+	if (proto < 0 || proto >= BT_MAX_PROTO)
+		return -EINVAL;
+
+	if (bt_proto[proto])
+		return -EEXIST;
+
+	bt_proto[proto] = ops;
+	return 0;
+}
+EXPORT_SYMBOL(bt_sock_register);
+
+int bt_sock_unregister(int proto)
+{
+	if (proto < 0 || proto >= BT_MAX_PROTO)
+		return -EINVAL;
+
+	if (!bt_proto[proto])
+		return -ENOENT;
+
+	bt_proto[proto] = NULL;
+	return 0;
+}
+EXPORT_SYMBOL(bt_sock_unregister);
+
+static int bt_sock_create(struct socket *sock, int proto)
+{
+	int err = 0;
+
+	if (proto < 0 || proto >= BT_MAX_PROTO)
+		return -EINVAL;
+
+#if defined(CONFIG_KMOD)
+	if (!bt_proto[proto]) {
+		request_module("bt-proto-%d", proto);
+	}
+#endif
+	err = -EPROTONOSUPPORT;
+	if (bt_proto[proto] && try_module_get(bt_proto[proto]->owner)) {
+		err = bt_proto[proto]->create(sock, proto);
+		module_put(bt_proto[proto]->owner);
+	}
+	return err; 
+}
+
+void bt_sock_link(struct bt_sock_list *l, struct sock *sk)
+{
+	write_lock_bh(&l->lock);
+	sk_add_node(sk, &l->head);
+	write_unlock_bh(&l->lock);
+}
+EXPORT_SYMBOL(bt_sock_link);
+
+void bt_sock_unlink(struct bt_sock_list *l, struct sock *sk)
+{
+	write_lock_bh(&l->lock);
+	sk_del_node_init(sk);
+	write_unlock_bh(&l->lock);
+}
+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);
+	list_add_tail(&bt_sk(sk)->accept_q, &bt_sk(parent)->accept_q);
+	bt_sk(sk)->parent = parent;
+	parent->sk_ack_backlog++;
+}
+EXPORT_SYMBOL(bt_accept_enqueue);
+
+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);
+}
+EXPORT_SYMBOL(bt_accept_unlink);
+
+struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock)
+{
+	struct list_head *p, *n;
+	struct sock *sk;
+
+	BT_DBG("parent %p", parent);
+
+	list_for_each_safe(p, n, &bt_sk(parent)->accept_q) {
+		sk = (struct sock *) list_entry(p, struct bt_sock, accept_q);
+
+		lock_sock(sk);
+
+		/* FIXME: Is this check still needed */
+		if (sk->sk_state == BT_CLOSED) {
+			release_sock(sk);
+			bt_accept_unlink(sk);
+			continue;
+		}
+
+		if (sk->sk_state == BT_CONNECTED || !newsock) {
+			bt_accept_unlink(sk);
+			if (newsock)
+				sock_graft(sk, newsock);
+			release_sock(sk);
+			return sk;
+		}
+
+		release_sock(sk);
+	}
+	return NULL;
+}
+EXPORT_SYMBOL(bt_accept_dequeue);
+
+int bt_sock_recvmsg(struct kiocb *iocb, 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;
+	int err;
+
+	BT_DBG("sock %p sk %p len %d", sock, sk, len);
+
+	if (flags & (MSG_OOB))
+		return -EOPNOTSUPP;
+
+	if (!(skb = skb_recv_datagram(sk, flags, noblock, &err))) {
+		if (sk->sk_shutdown & RCV_SHUTDOWN)
+			return 0;
+		return err;
+	}
+
+	msg->msg_namelen = 0;
+
+	copied = skb->len;
+	if (len < copied) {
+		msg->msg_flags |= MSG_TRUNC;
+		copied = len;
+	}
+
+	skb->h.raw = skb->data;
+	err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
+
+	skb_free_datagram(sk, skb);
+
+	return err ? : copied;
+}
+EXPORT_SYMBOL(bt_sock_recvmsg);
+
+static inline unsigned int bt_accept_poll(struct sock *parent)
+{
+	struct list_head *p, *n;
+	struct sock *sk;
+
+	list_for_each_safe(p, n, &bt_sk(parent)->accept_q) {
+		sk = (struct sock *) list_entry(p, struct bt_sock, accept_q);
+		if (sk->sk_state == BT_CONNECTED)
+			return POLLIN | POLLRDNORM;
+	}
+
+	return 0;
+}
+
+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->sk_sleep, 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;
+
+	if (sk->sk_shutdown == SHUTDOWN_MASK)
+		mask |= POLLHUP;
+
+	if (!skb_queue_empty(&sk->sk_receive_queue) || 
+			(sk->sk_shutdown & RCV_SHUTDOWN))
+		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 (sock_writeable(sk))
+		mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
+	else
+		set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags);
+
+	return mask;
+}
+EXPORT_SYMBOL(bt_sock_poll);
+
+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->sk_sleep, &wait);
+	while (sk->sk_state != state) {
+		set_current_state(TASK_INTERRUPTIBLE);
+
+		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);
+
+		if (sk->sk_err) {
+			err = sock_error(sk);
+			break;
+		}
+	}
+	set_current_state(TASK_RUNNING);
+	remove_wait_queue(sk->sk_sleep, &wait);
+	return err;
+}
+EXPORT_SYMBOL(bt_sock_wait_state);
+
+static struct net_proto_family bt_sock_family_ops = {
+	.owner	= THIS_MODULE,
+	.family	= PF_BLUETOOTH,
+	.create	= bt_sock_create,
+};
+
+extern int hci_sock_init(void);
+extern int hci_sock_cleanup(void);
+
+extern int bt_sysfs_init(void);
+extern int bt_sysfs_cleanup(void);
+
+static int __init bt_init(void)
+{
+	BT_INFO("Core ver %s", VERSION);
+
+	proc_bt = proc_mkdir("bluetooth", NULL);
+	if (proc_bt)
+		proc_bt->owner = THIS_MODULE;
+
+	sock_register(&bt_sock_family_ops);
+
+	BT_INFO("HCI device and connection manager initialized");
+
+	bt_sysfs_init();
+
+	hci_sock_init();
+
+	return 0;
+}
+
+static void __exit bt_exit(void)
+{
+	hci_sock_cleanup();
+
+	bt_sysfs_cleanup();
+
+	sock_unregister(PF_BLUETOOTH);
+
+	remove_proc_entry("bluetooth", NULL);
+}
+
+subsys_initcall(bt_init);
+module_exit(bt_exit);
+
+MODULE_AUTHOR("Maxim Krasnyansky <maxk@qualcomm.com>, Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Bluetooth Core ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_NETPROTO(PF_BLUETOOTH);