/*    HIDP implementation for Linux Bluetooth stack (BlueZ).   Copyright (C) 2003-2004 Marcel Holtmann <marcel@holtmann.org>   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.*/#include <linux/config.h>#include <linux/module.h>#include <linux/types.h>#include <linux/errno.h>#include <linux/kernel.h>#include <linux/major.h>#include <linux/sched.h>#include <linux/slab.h>#include <linux/poll.h>#include <linux/fcntl.h>#include <linux/skbuff.h>#include <linux/socket.h>#include <linux/ioctl.h>#include <linux/file.h>#include <linux/init.h>#include <net/sock.h>#include "hidp.h"#ifndef CONFIG_BT_HIDP_DEBUG#undef  BT_DBG#define BT_DBG(D...)#endifstatic int hidp_sock_release(struct socket *sock){	struct sock *sk = sock->sk;	BT_DBG("sock %p sk %p", sock, sk);	if (!sk)		return 0;	sock_orphan(sk);	sock_put(sk);	return 0;}static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg){	void __user *argp = (void __user *) arg;	struct hidp_connadd_req ca;	struct hidp_conndel_req cd;	struct hidp_connlist_req cl;	struct hidp_conninfo ci;	struct socket *csock;	struct socket *isock;	int err;	BT_DBG("cmd %x arg %lx", cmd, arg);	switch (cmd) {	case HIDPCONNADD:		if (!capable(CAP_NET_ADMIN))			return -EACCES;		if (copy_from_user(&ca, argp, sizeof(ca)))			return -EFAULT;		csock = sockfd_lookup(ca.ctrl_sock, &err);		if (!csock)			return err;		isock = sockfd_lookup(ca.intr_sock, &err);		if (!isock) {			fput(csock->file);			return err;		}		if (csock->sk->sk_state != BT_CONNECTED || isock->sk->sk_state != BT_CONNECTED) {			fput(csock->file);			fput(isock->file);			return -EBADFD;		}		err = hidp_add_connection(&ca, csock, isock);		if (!err) {			if (copy_to_user(argp, &ca, sizeof(ca)))				err = -EFAULT;		} else {			fput(csock->file);			fput(isock->file);		}		return err;	case HIDPCONNDEL:		if (!capable(CAP_NET_ADMIN))			return -EACCES;		if (copy_from_user(&cd, argp, sizeof(cd)))			return -EFAULT;		return hidp_del_connection(&cd);	case HIDPGETCONNLIST:		if (copy_from_user(&cl, argp, sizeof(cl)))			return -EFAULT;		if (cl.cnum <= 0)			return -EINVAL;		err = hidp_get_connlist(&cl);		if (!err && copy_to_user(argp, &cl, sizeof(cl)))			return -EFAULT;		return err;	case HIDPGETCONNINFO:		if (copy_from_user(&ci, argp, sizeof(ci)))			return -EFAULT;		err = hidp_get_conninfo(&ci);		if (!err && copy_to_user(argp, &ci, sizeof(ci)))			return -EFAULT;		return err;	}	return -EINVAL;}static struct proto_ops hidp_sock_ops = {	.family		= PF_BLUETOOTH,	.owner		= THIS_MODULE,	.release	= hidp_sock_release,	.ioctl		= hidp_sock_ioctl,	.bind		= sock_no_bind,	.getname	= sock_no_getname,	.sendmsg	= sock_no_sendmsg,	.recvmsg	= sock_no_recvmsg,	.poll		= sock_no_poll,	.listen		= sock_no_listen,	.shutdown	= sock_no_shutdown,	.setsockopt	= sock_no_setsockopt,	.getsockopt	= sock_no_getsockopt,	.connect	= sock_no_connect,	.socketpair	= sock_no_socketpair,	.accept		= sock_no_accept,	.mmap		= sock_no_mmap};static int hidp_sock_create(struct socket *sock, int protocol){	struct sock *sk;	BT_DBG("sock %p", sock);	if (sock->type != SOCK_RAW)		return -ESOCKTNOSUPPORT;	if (!(sk = bt_sock_alloc(sock, PF_BLUETOOTH, 0, GFP_KERNEL)))		return -ENOMEM;	sk_set_owner(sk, THIS_MODULE);	sock->ops = &hidp_sock_ops;	sock->state = SS_UNCONNECTED;	sk->sk_destruct = NULL;	sk->sk_protocol = protocol;	return 0;}static struct net_proto_family hidp_sock_family_ops = {	.family	= PF_BLUETOOTH,	.owner	= THIS_MODULE,	.create	= hidp_sock_create};int __init hidp_init_sockets(void){	int err;	err = bt_sock_register(BTPROTO_HIDP, &hidp_sock_family_ops);	if (err < 0)		BT_ERR("Can't register HIDP socket");	return err;}void __exit hidp_cleanup_sockets(void){	if (bt_sock_unregister(BTPROTO_HIDP) < 0)		BT_ERR("Can't unregister HIDP socket");}