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 000000000000..1650c6bf6997
--- /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);