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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /net/bluetooth/af_bluetooth.c | |
download | linux-3.10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz linux-3.10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 linux-3.10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'net/bluetooth/af_bluetooth.c')
-rw-r--r-- | net/bluetooth/af_bluetooth.c | 355 |
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); |