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/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/init.h>
36 #include <linux/compat.h>
37 #include <linux/gfp.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 ||
89 isock->sk->sk_state != BT_CONNECTED) {
95 err = hidp_add_connection(&ca, csock, isock);
97 if (copy_to_user(argp, &ca, sizeof(ca)))
107 if (!capable(CAP_NET_ADMIN))
110 if (copy_from_user(&cd, argp, sizeof(cd)))
113 return hidp_del_connection(&cd);
115 case HIDPGETCONNLIST:
116 if (copy_from_user(&cl, argp, sizeof(cl)))
122 err = hidp_get_connlist(&cl);
123 if (!err && copy_to_user(argp, &cl, sizeof(cl)))
128 case HIDPGETCONNINFO:
129 if (copy_from_user(&ci, argp, sizeof(ci)))
132 err = hidp_get_conninfo(&ci);
133 if (!err && copy_to_user(argp, &ci, sizeof(ci)))
143 struct compat_hidp_connadd_req {
144 int ctrl_sock; /* Connected control socket */
145 int intr_sock; /* Connected interrupt socket */
148 compat_uptr_t rd_data;
159 static int hidp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
161 if (cmd == HIDPGETCONNLIST) {
162 struct hidp_connlist_req cl;
166 if (get_user(cl.cnum, (u32 __user *) arg) ||
167 get_user(uci, (u32 __user *) (arg + 4)))
170 cl.ci = compat_ptr(uci);
175 err = hidp_get_connlist(&cl);
177 if (!err && put_user(cl.cnum, (u32 __user *) arg))
181 } else if (cmd == HIDPCONNADD) {
182 struct compat_hidp_connadd_req ca;
183 struct hidp_connadd_req __user *uca;
185 uca = compat_alloc_user_space(sizeof(*uca));
187 if (copy_from_user(&ca, (void __user *) arg, sizeof(ca)))
190 if (put_user(ca.ctrl_sock, &uca->ctrl_sock) ||
191 put_user(ca.intr_sock, &uca->intr_sock) ||
192 put_user(ca.parser, &uca->parser) ||
193 put_user(ca.rd_size, &uca->rd_size) ||
194 put_user(compat_ptr(ca.rd_data), &uca->rd_data) ||
195 put_user(ca.country, &uca->country) ||
196 put_user(ca.subclass, &uca->subclass) ||
197 put_user(ca.vendor, &uca->vendor) ||
198 put_user(ca.product, &uca->product) ||
199 put_user(ca.version, &uca->version) ||
200 put_user(ca.flags, &uca->flags) ||
201 put_user(ca.idle_to, &uca->idle_to) ||
202 copy_to_user(&uca->name[0], &ca.name[0], 128))
205 arg = (unsigned long) uca;
207 /* Fall through. We don't actually write back any _changes_
208 to the structure anyway, so there's no need to copy back
209 into the original compat version */
212 return hidp_sock_ioctl(sock, cmd, arg);
216 static const struct proto_ops hidp_sock_ops = {
217 .family = PF_BLUETOOTH,
218 .owner = THIS_MODULE,
219 .release = hidp_sock_release,
220 .ioctl = hidp_sock_ioctl,
222 .compat_ioctl = hidp_sock_compat_ioctl,
224 .bind = sock_no_bind,
225 .getname = sock_no_getname,
226 .sendmsg = sock_no_sendmsg,
227 .recvmsg = sock_no_recvmsg,
228 .poll = sock_no_poll,
229 .listen = sock_no_listen,
230 .shutdown = sock_no_shutdown,
231 .setsockopt = sock_no_setsockopt,
232 .getsockopt = sock_no_getsockopt,
233 .connect = sock_no_connect,
234 .socketpair = sock_no_socketpair,
235 .accept = sock_no_accept,
239 static struct proto hidp_proto = {
241 .owner = THIS_MODULE,
242 .obj_size = sizeof(struct bt_sock)
245 static int hidp_sock_create(struct net *net, struct socket *sock, int protocol,
250 BT_DBG("sock %p", sock);
252 if (sock->type != SOCK_RAW)
253 return -ESOCKTNOSUPPORT;
255 sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hidp_proto);
259 sock_init_data(sock, sk);
261 sock->ops = &hidp_sock_ops;
263 sock->state = SS_UNCONNECTED;
265 sock_reset_flag(sk, SOCK_ZAPPED);
267 sk->sk_protocol = protocol;
268 sk->sk_state = BT_OPEN;
273 static const struct net_proto_family hidp_sock_family_ops = {
274 .family = PF_BLUETOOTH,
275 .owner = THIS_MODULE,
276 .create = hidp_sock_create
279 int __init hidp_init_sockets(void)
283 err = proto_register(&hidp_proto, 0);
287 err = bt_sock_register(BTPROTO_HIDP, &hidp_sock_family_ops);
294 BT_ERR("Can't register HIDP socket");
295 proto_unregister(&hidp_proto);
299 void __exit hidp_cleanup_sockets(void)
301 if (bt_sock_unregister(BTPROTO_HIDP) < 0)
302 BT_ERR("Can't unregister HIDP socket");
304 proto_unregister(&hidp_proto);