[linux-2.6-block.git] / net / bluetooth / hidp / sock.c

/* 
   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/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...)
#endif

static 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 const 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 struct proto hidp_proto = {
	.name		= "HIDP",
	.owner		= THIS_MODULE,
	.obj_size	= sizeof(struct bt_sock)
};

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;

	sk = sk_alloc(PF_BLUETOOTH, GFP_KERNEL, &hidp_proto, 1);
	if (!sk)
		return -ENOMEM;

	sock_init_data(sock, sk);

	sock->ops = &hidp_sock_ops;

	sock->state = SS_UNCONNECTED;

	sock_reset_flag(sk, SOCK_ZAPPED);

	sk->sk_protocol = protocol;
	sk->sk_state	= BT_OPEN;

	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 = proto_register(&hidp_proto, 0);
	if (err < 0)
		return err;

	err = bt_sock_register(BTPROTO_HIDP, &hidp_sock_family_ops);
	if (err < 0)
		goto error;

	return 0;

error:
	BT_ERR("Can't register HIDP socket");
	proto_unregister(&hidp_proto);
	return err;
}

void __exit hidp_cleanup_sockets(void)
{
	if (bt_sock_unregister(BTPROTO_HIDP) < 0)
		BT_ERR("Can't unregister HIDP socket");

	proto_unregister(&hidp_proto);
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	HIDP implementation for Linux Bluetooth stack (BlueZ).
	3	Copyright (C) 2003-2004 Marcel Holtmann <marcel@holtmann.org>
	4
	5	This program is free software; you can redistribute it and/or modify
	6	it under the terms of the GNU General Public License version 2 as
	7	published by the Free Software Foundation;
	8
	9	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
	10	OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	11	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
	12	IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
	13	CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
	14	WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	15	ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	16	OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	17
	18	ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
	19	COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
	20	SOFTWARE IS DISCLAIMED.
	21	*/
	22
	23	#include <linux/config.h>
	24	#include <linux/module.h>
	25
	26	#include <linux/types.h>
	27	#include <linux/errno.h>
	28	#include <linux/kernel.h>
1da177e4 LT	29	#include <linux/sched.h>
	30	#include <linux/slab.h>
	31	#include <linux/poll.h>
	32	#include <linux/fcntl.h>
	33	#include <linux/skbuff.h>
	34	#include <linux/socket.h>
	35	#include <linux/ioctl.h>
	36	#include <linux/file.h>
	37	#include <linux/init.h>
	38	#include <net/sock.h>
	39
	40	#include "hidp.h"
	41
	42	#ifndef CONFIG_BT_HIDP_DEBUG
	43	#undef BT_DBG
	44	#define BT_DBG(D...)
	45	#endif
	46
	47	static int hidp_sock_release(struct socket *sock)
	48	{
	49	struct sock *sk = sock->sk;
	50
	51	BT_DBG("sock %p sk %p", sock, sk);
	52
	53	if (!sk)
	54	return 0;
	55
	56	sock_orphan(sk);
	57	sock_put(sk);
	58
	59	return 0;
	60	}
	61
	62	static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
	63	{
	64	void __user argp = (void __user ) arg;
	65	struct hidp_connadd_req ca;
	66	struct hidp_conndel_req cd;
	67	struct hidp_connlist_req cl;
	68	struct hidp_conninfo ci;
	69	struct socket *csock;
	70	struct socket *isock;
	71	int err;
	72
	73	BT_DBG("cmd %x arg %lx", cmd, arg);
	74
	75	switch (cmd) {
	76	case HIDPCONNADD:
	77	if (!capable(CAP_NET_ADMIN))
	78	return -EACCES;
	79
	80	if (copy_from_user(&ca, argp, sizeof(ca)))
	81	return -EFAULT;
	82
	83	csock = sockfd_lookup(ca.ctrl_sock, &err);
	84	if (!csock)
	85	return err;
	86
	87	isock = sockfd_lookup(ca.intr_sock, &err);
	88	if (!isock) {
	89	fput(csock->file);
	90	return err;
	91	}
	92
93	if (csock->sk->sk_state != BT_CONNECTED \|\| isock->sk->sk_state != BT_CONNECTED) {
94	fput(csock->file);
95	fput(isock->file);
96	return -EBADFD;
97	}
98
99	err = hidp_add_connection(&ca, csock, isock);
100	if (!err) {
101	if (copy_to_user(argp, &ca, sizeof(ca)))
102	err = -EFAULT;
103	} else {
104	fput(csock->file);
105	fput(isock->file);
106	}
107
108	return err;
109
110	case HIDPCONNDEL:
111	if (!capable(CAP_NET_ADMIN))
112	return -EACCES;
113
114	if (copy_from_user(&cd, argp, sizeof(cd)))
115	return -EFAULT;
116
117	return hidp_del_connection(&cd);
118
119	case HIDPGETCONNLIST:
120	if (copy_from_user(&cl, argp, sizeof(cl)))
121	return -EFAULT;
122
123	if (cl.cnum <= 0)
124	return -EINVAL;
125
126	err = hidp_get_connlist(&cl);
127	if (!err && copy_to_user(argp, &cl, sizeof(cl)))
128	return -EFAULT;
129
130	return err;
131
132	case HIDPGETCONNINFO:
133	if (copy_from_user(&ci, argp, sizeof(ci)))
134	return -EFAULT;
135
136	err = hidp_get_conninfo(&ci);
137	if (!err && copy_to_user(argp, &ci, sizeof(ci)))
138	return -EFAULT;
139
140	return err;
141	}
142
143	return -EINVAL;
144	}
145
90ddc4f0	146	static const struct proto_ops hidp_sock_ops = {
1da177e4 LT	147	.family = PF_BLUETOOTH,
	148	.owner = THIS_MODULE,
	149	.release = hidp_sock_release,
	150	.ioctl = hidp_sock_ioctl,
	151	.bind = sock_no_bind,
	152	.getname = sock_no_getname,
	153	.sendmsg = sock_no_sendmsg,
	154	.recvmsg = sock_no_recvmsg,
	155	.poll = sock_no_poll,
	156	.listen = sock_no_listen,
	157	.shutdown = sock_no_shutdown,
	158	.setsockopt = sock_no_setsockopt,
	159	.getsockopt = sock_no_getsockopt,
	160	.connect = sock_no_connect,
	161	.socketpair = sock_no_socketpair,
	162	.accept = sock_no_accept,
	163	.mmap = sock_no_mmap
	164	};
	165
	166	static struct proto hidp_proto = {
	167	.name = "HIDP",
	168	.owner = THIS_MODULE,
	169	.obj_size = sizeof(struct bt_sock)
	170	};
	171
	172	static int hidp_sock_create(struct socket *sock, int protocol)
	173	{
	174	struct sock *sk;
	175
	176	BT_DBG("sock %p", sock);
	177
	178	if (sock->type != SOCK_RAW)
	179	return -ESOCKTNOSUPPORT;
	180
	181	sk = sk_alloc(PF_BLUETOOTH, GFP_KERNEL, &hidp_proto, 1);
	182	if (!sk)
	183	return -ENOMEM;
	184
	185	sock_init_data(sock, sk);
	186
	187	sock->ops = &hidp_sock_ops;
	188
	189	sock->state = SS_UNCONNECTED;
	190
	191	sock_reset_flag(sk, SOCK_ZAPPED);
	192
	193	sk->sk_protocol = protocol;
	194	sk->sk_state = BT_OPEN;
	195
	196	return 0;
	197	}
	198
	199	static struct net_proto_family hidp_sock_family_ops = {
	200	.family = PF_BLUETOOTH,
	201	.owner = THIS_MODULE,
	202	.create = hidp_sock_create
	203	};
	204
	205	int __init hidp_init_sockets(void)
	206	{
	207	int err;
	208
	209	err = proto_register(&hidp_proto, 0);
	210	if (err < 0)
211	return err;
212
213	err = bt_sock_register(BTPROTO_HIDP, &hidp_sock_family_ops);
214	if (err < 0)
215	goto error;
216
217	return 0;
218
219	error:
220	BT_ERR("Can't register HIDP socket");
221	proto_unregister(&hidp_proto);
222	return err;
223	}
224
225	void __exit hidp_cleanup_sockets(void)
226	{
227	if (bt_sock_unregister(BTPROTO_HIDP) < 0)
228	BT_ERR("Can't unregister HIDP socket");
229
230	proto_unregister(&hidp_proto);
231	}