2 CMTP implementation for Linux Bluetooth stack (BlueZ).
3 Copyright (C) 2002-2003 Marcel Holtmann <marcel@holtmann.org>
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;
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.
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.
23 #include <linux/export.h>
25 #include <linux/types.h>
26 #include <linux/capability.h>
27 #include <linux/errno.h>
28 #include <linux/kernel.h>
29 #include <linux/poll.h>
30 #include <linux/fcntl.h>
31 #include <linux/skbuff.h>
32 #include <linux/socket.h>
33 #include <linux/ioctl.h>
34 #include <linux/file.h>
35 #include <linux/compat.h>
36 #include <linux/gfp.h>
37 #include <linux/uaccess.h>
40 #include <linux/isdn/capilli.h>
45 static struct bt_sock_list cmtp_sk_list = {
46 .lock = __RW_LOCK_UNLOCKED(cmtp_sk_list.lock)
49 static int cmtp_sock_release(struct socket *sock)
51 struct sock *sk = sock->sk;
53 BT_DBG("sock %p sk %p", sock, sk);
58 bt_sock_unlink(&cmtp_sk_list, sk);
66 static int do_cmtp_sock_ioctl(struct socket *sock, unsigned int cmd, void __user *argp)
68 struct cmtp_connadd_req ca;
69 struct cmtp_conndel_req cd;
70 struct cmtp_connlist_req cl;
71 struct cmtp_conninfo ci;
75 BT_DBG("cmd %x arg %p", cmd, argp);
79 if (!capable(CAP_NET_ADMIN))
82 if (copy_from_user(&ca, argp, sizeof(ca)))
85 nsock = sockfd_lookup(ca.sock, &err);
89 if (nsock->sk->sk_state != BT_CONNECTED) {
94 err = cmtp_add_connection(&ca, nsock);
96 if (copy_to_user(argp, &ca, sizeof(ca)))
104 if (!capable(CAP_NET_ADMIN))
107 if (copy_from_user(&cd, argp, sizeof(cd)))
110 return cmtp_del_connection(&cd);
112 case CMTPGETCONNLIST:
113 if (copy_from_user(&cl, argp, sizeof(cl)))
119 err = cmtp_get_connlist(&cl);
120 if (!err && copy_to_user(argp, &cl, sizeof(cl)))
125 case CMTPGETCONNINFO:
126 if (copy_from_user(&ci, argp, sizeof(ci)))
129 err = cmtp_get_conninfo(&ci);
130 if (!err && copy_to_user(argp, &ci, sizeof(ci)))
139 static int cmtp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
141 return do_cmtp_sock_ioctl(sock, cmd, (void __user *)arg);
145 static int cmtp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
147 void __user *argp = compat_ptr(arg);
148 if (cmd == CMTPGETCONNLIST) {
149 struct cmtp_connlist_req cl;
150 u32 __user *p = argp;
154 if (get_user(cl.cnum, p) || get_user(uci, p + 1))
157 cl.ci = compat_ptr(uci);
162 err = cmtp_get_connlist(&cl);
164 if (!err && put_user(cl.cnum, p))
170 return do_cmtp_sock_ioctl(sock, cmd, argp);
174 static const struct proto_ops cmtp_sock_ops = {
175 .family = PF_BLUETOOTH,
176 .owner = THIS_MODULE,
177 .release = cmtp_sock_release,
178 .ioctl = cmtp_sock_ioctl,
180 .compat_ioctl = cmtp_sock_compat_ioctl,
182 .bind = sock_no_bind,
183 .getname = sock_no_getname,
184 .sendmsg = sock_no_sendmsg,
185 .recvmsg = sock_no_recvmsg,
186 .listen = sock_no_listen,
187 .shutdown = sock_no_shutdown,
188 .connect = sock_no_connect,
189 .socketpair = sock_no_socketpair,
190 .accept = sock_no_accept,
194 static struct proto cmtp_proto = {
196 .owner = THIS_MODULE,
197 .obj_size = sizeof(struct bt_sock)
200 static int cmtp_sock_create(struct net *net, struct socket *sock, int protocol,
205 BT_DBG("sock %p", sock);
207 if (sock->type != SOCK_RAW)
208 return -ESOCKTNOSUPPORT;
210 sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &cmtp_proto, kern);
214 sock_init_data(sock, sk);
216 sock->ops = &cmtp_sock_ops;
218 sock->state = SS_UNCONNECTED;
220 sock_reset_flag(sk, SOCK_ZAPPED);
222 sk->sk_protocol = protocol;
223 sk->sk_state = BT_OPEN;
225 bt_sock_link(&cmtp_sk_list, sk);
230 static const struct net_proto_family cmtp_sock_family_ops = {
231 .family = PF_BLUETOOTH,
232 .owner = THIS_MODULE,
233 .create = cmtp_sock_create
236 int cmtp_init_sockets(void)
240 err = proto_register(&cmtp_proto, 0);
244 err = bt_sock_register(BTPROTO_CMTP, &cmtp_sock_family_ops);
246 BT_ERR("Can't register CMTP socket");
250 err = bt_procfs_init(&init_net, "cmtp", &cmtp_sk_list, NULL);
252 BT_ERR("Failed to create CMTP proc file");
253 bt_sock_unregister(BTPROTO_HIDP);
257 BT_INFO("CMTP socket layer initialized");
262 proto_unregister(&cmtp_proto);
266 void cmtp_cleanup_sockets(void)
268 bt_procfs_cleanup(&init_net, "cmtp");
269 bt_sock_unregister(BTPROTO_CMTP);
270 proto_unregister(&cmtp_proto);