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/*

   BNEP implementation for Linux Bluetooth stack (BlueZ).

   Copyright (C) 2001-2002 Inventel Systemes

   Written 2001-2002 by

        David Libault  <david.libault@inventel.fr>

   Copyright (C) 2002 Maxim Krasnyanskiy <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.

*/

/*

 * $Id: sock.c,v 1.1.1.1 2004-04-15 01:17:08 phoenix Exp $

 */

#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 <net/sock.h>

#include <asm/system.h>

#include <asm/uaccess.h>

#include "bnep.h"

#ifndef CONFIG_BLUEZ_BNEP_DEBUG

#undef  BT_DBG

#define BT_DBG( A... )

#endif

static int bnep_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);

        MOD_DEC_USE_COUNT;

        return 0;

}

static int bnep_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)

{

        struct bnep_connlist_req cl;

        struct bnep_connadd_req  ca;

        struct bnep_conndel_req  cd;

        struct bnep_conninfo ci;

        struct socket *nsock;

        int err;

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

        switch (cmd) {

        case BNEPCONNADD:

                if (!capable(CAP_NET_ADMIN))

                        return -EACCES;

                if (copy_from_user(&ca, (void *) arg, sizeof(ca)))

                        return -EFAULT;

                nsock = sockfd_lookup(ca.sock, &err);

                if (!nsock)

                        return err;

                if (nsock->sk->state != BT_CONNECTED) {

                        fput(nsock->file);

                        return -EBADFD;

                }

                err = bnep_add_connection(&ca, nsock);

                if (!err) {

                        if (copy_to_user((void *) arg, &ca, sizeof(ca)))

                                err = -EFAULT;

                } else

                        fput(nsock->file);

                return err;

        case BNEPCONNDEL:

                if (!capable(CAP_NET_ADMIN))

                        return -EACCES;

                if (copy_from_user(&cd, (void *) arg, sizeof(cd)))

                        return -EFAULT;

                return bnep_del_connection(&cd);

        case BNEPGETCONNLIST:

                if (copy_from_user(&cl, (void *) arg, sizeof(cl)))

                        return -EFAULT;

                if (cl.cnum <= 0)

                        return -EINVAL;

                err = bnep_get_connlist(&cl);

                if (!err && copy_to_user((void *) arg, &cl, sizeof(cl)))

                        return -EFAULT;

                return err;

        case BNEPGETCONNINFO:

                if (copy_from_user(&ci, (void *) arg, sizeof(ci)))

                        return -EFAULT;

                err = bnep_get_conninfo(&ci);

                if (!err && copy_to_user((void *) arg, &ci, sizeof(ci)))

                        return -EFAULT;

                return err;

        default:

                return -EINVAL;

        }

        return 0;

}

static struct proto_ops bnep_sock_ops = {

        family:     PF_BLUETOOTH,

        release:    bnep_sock_release,

        ioctl:      bnep_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 bnep_sock_create(struct socket *sock, int protocol)

{

        struct sock *sk;

        BT_DBG("sock %p", sock);

        if (sock->type != SOCK_RAW)

                return -ESOCKTNOSUPPORT;

        sock->ops = &bnep_sock_ops;

        if (!(sk = sk_alloc(PF_BLUETOOTH, GFP_KERNEL, 1)))

                return -ENOMEM;

        MOD_INC_USE_COUNT;

        sock->state = SS_UNCONNECTED;

        sock_init_data(sock, sk);

        sk->destruct = NULL;

        sk->protocol = protocol;

        return 0;

}

static struct net_proto_family bnep_sock_family_ops = {

        family: PF_BLUETOOTH,

        create: bnep_sock_create

};

int bnep_sock_init(void)

{

        bluez_sock_register(BTPROTO_BNEP, &bnep_sock_family_ops);

        return 0;

}

int bnep_sock_cleanup(void)

{

        if (bluez_sock_unregister(BTPROTO_BNEP))

                BT_ERR("Can't unregister BNEP socket");

        return 0;

}