2 HIDP implementation for Linux Bluetooth stack (BlueZ).
3 Copyright (C) 2003-2004 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/module.h>
25 #include <linux/types.h>
26 #include <linux/capability.h>
27 #include <linux/errno.h>
28 #include <linux/kernel.h>
29 #include <linux/slab.h>
30 #include <linux/poll.h>
31 #include <linux/fcntl.h>
32 #include <linux/skbuff.h>
33 #include <linux/socket.h>
34 #include <linux/ioctl.h>
35 #include <linux/file.h>
36 #include <linux/init.h>
37 #include <linux/compat.h>
42 static int hidp_sock_release(struct socket *sock)
44 struct sock *sk = sock->sk;
46 BT_DBG("sock %p sk %p", sock, sk);
57 static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
59 void __user *argp = (void __user *) arg;
60 struct hidp_connadd_req ca;
61 struct hidp_conndel_req cd;
62 struct hidp_connlist_req cl;
63 struct hidp_conninfo ci;
68 BT_DBG("cmd %x arg %lx", cmd, arg);
72 if (!capable(CAP_NET_ADMIN))
75 if (copy_from_user(&ca, argp, sizeof(ca)))
78 csock = sockfd_lookup(ca.ctrl_sock, &err);
82 isock = sockfd_lookup(ca.intr_sock, &err);
88 if (csock->sk->sk_state != BT_CONNECTED || isock->sk->sk_state != BT_CONNECTED) {
94 err = hidp_add_connection(&ca, csock, isock);
96 if (copy_to_user(argp, &ca, sizeof(ca)))
106 if (!capable(CAP_NET_ADMIN))
109 if (copy_from_user(&cd, argp, sizeof(cd)))
112 return hidp_del_connection(&cd);
114 case HIDPGETCONNLIST:
115 if (copy_from_user(&cl, argp, sizeof(cl)))
121 err = hidp_get_connlist(&cl);
122 if (!err && copy_to_user(argp, &cl, sizeof(cl)))
127 case HIDPGETCONNINFO:
128 if (copy_from_user(&ci, argp, sizeof(ci)))
131 err = hidp_get_conninfo(&ci);
132 if (!err && copy_to_user(argp, &ci, sizeof(ci)))
142 struct compat_hidp_connadd_req {
143 int ctrl_sock; // Connected control socket
144 int intr_sock; // Connteted interrupt socket
147 compat_uptr_t rd_data;
158 static int hidp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
160 if (cmd == HIDPGETCONNLIST) {
161 struct hidp_connlist_req cl;
165 if (get_user(cl.cnum, (uint32_t __user *) arg) ||
166 get_user(uci, (u32 __user *) (arg + 4)))
169 cl.ci = compat_ptr(uci);
174 err = hidp_get_connlist(&cl);
176 if (!err && put_user(cl.cnum, (uint32_t __user *) arg))
180 } else if (cmd == HIDPCONNADD) {
181 struct compat_hidp_connadd_req ca;
182 struct hidp_connadd_req __user *uca;
184 uca = compat_alloc_user_space(sizeof(*uca));
186 if (copy_from_user(&ca, (void __user *) arg, sizeof(ca)))
189 if (put_user(ca.ctrl_sock, &uca->ctrl_sock) ||
190 put_user(ca.intr_sock, &uca->intr_sock) ||
191 put_user(ca.parser, &uca->parser) ||
192 put_user(ca.rd_size, &uca->rd_size) ||
193 put_user(compat_ptr(ca.rd_data), &uca->rd_data) ||
194 put_user(ca.country, &uca->country) ||
195 put_user(ca.subclass, &uca->subclass) ||
196 put_user(ca.vendor, &uca->vendor) ||
197 put_user(ca.product, &uca->product) ||
198 put_user(ca.version, &uca->version) ||
199 put_user(ca.flags, &uca->flags) ||
200 put_user(ca.idle_to, &uca->idle_to) ||
201 copy_to_user(&uca->name[0], &ca.name[0], 128))
204 arg = (unsigned long) uca;
206 /* Fall through. We don't actually write back any _changes_
207 to the structure anyway, so there's no need to copy back
208 into the original compat version */
211 return hidp_sock_ioctl(sock, cmd, arg);
215 static const struct proto_ops hidp_sock_ops = {
216 .family = PF_BLUETOOTH,
217 .owner = THIS_MODULE,
218 .release = hidp_sock_release,
219 .ioctl = hidp_sock_ioctl,
221 .compat_ioctl = hidp_sock_compat_ioctl,
223 .bind = sock_no_bind,
224 .getname = sock_no_getname,
225 .sendmsg = sock_no_sendmsg,
226 .recvmsg = sock_no_recvmsg,
227 .poll = sock_no_poll,
228 .listen = sock_no_listen,
229 .shutdown = sock_no_shutdown,
230 .setsockopt = sock_no_setsockopt,
231 .getsockopt = sock_no_getsockopt,
232 .connect = sock_no_connect,
233 .socketpair = sock_no_socketpair,
234 .accept = sock_no_accept,
238 static struct proto hidp_proto = {
240 .owner = THIS_MODULE,
241 .obj_size = sizeof(struct bt_sock)
244 static int hidp_sock_create(struct net *net, struct socket *sock, int protocol)
248 BT_DBG("sock %p", sock);
250 if (sock->type != SOCK_RAW)
251 return -ESOCKTNOSUPPORT;
253 sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hidp_proto);
257 sock_init_data(sock, sk);
259 sock->ops = &hidp_sock_ops;
261 sock->state = SS_UNCONNECTED;
263 sock_reset_flag(sk, SOCK_ZAPPED);
265 sk->sk_protocol = protocol;
266 sk->sk_state = BT_OPEN;
271 static struct net_proto_family hidp_sock_family_ops = {
272 .family = PF_BLUETOOTH,
273 .owner = THIS_MODULE,
274 .create = hidp_sock_create
277 int __init hidp_init_sockets(void)
281 err = proto_register(&hidp_proto, 0);
285 err = bt_sock_register(BTPROTO_HIDP, &hidp_sock_family_ops);
292 BT_ERR("Can't register HIDP socket");
293 proto_unregister(&hidp_proto);
297 void __exit hidp_cleanup_sockets(void)
299 if (bt_sock_unregister(BTPROTO_HIDP) < 0)
300 BT_ERR("Can't unregister HIDP socket");
302 proto_unregister(&hidp_proto);