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 #ifndef CONFIG_BT_HIDP_DEBUG
47 static int hidp_sock_release(struct socket *sock)
49 struct sock *sk = sock->sk;
51 BT_DBG("sock %p sk %p", sock, sk);
62 static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
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;
73 BT_DBG("cmd %x arg %lx", cmd, arg);
77 if (!capable(CAP_NET_ADMIN))
80 if (copy_from_user(&ca, argp, sizeof(ca)))
83 csock = sockfd_lookup(ca.ctrl_sock, &err);
87 isock = sockfd_lookup(ca.intr_sock, &err);
93 if (csock->sk->sk_state != BT_CONNECTED || isock->sk->sk_state != BT_CONNECTED) {
99 err = hidp_add_connection(&ca, csock, isock);
101 if (copy_to_user(argp, &ca, sizeof(ca)))
111 if (!capable(CAP_NET_ADMIN))
114 if (copy_from_user(&cd, argp, sizeof(cd)))
117 return hidp_del_connection(&cd);
119 case HIDPGETCONNLIST:
120 if (copy_from_user(&cl, argp, sizeof(cl)))
126 err = hidp_get_connlist(&cl);
127 if (!err && copy_to_user(argp, &cl, sizeof(cl)))
132 case HIDPGETCONNINFO:
133 if (copy_from_user(&ci, argp, sizeof(ci)))
136 err = hidp_get_conninfo(&ci);
137 if (!err && copy_to_user(argp, &ci, sizeof(ci)))
147 struct compat_hidp_connadd_req {
148 int ctrl_sock; // Connected control socket
149 int intr_sock; // Connteted interrupt socket
152 compat_uptr_t rd_data;
163 static int hidp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
165 if (cmd == HIDPGETCONNLIST) {
166 struct hidp_connlist_req cl;
170 if (get_user(cl.cnum, (uint32_t __user *) arg) ||
171 get_user(uci, (u32 __user *) (arg + 4)))
174 cl.ci = compat_ptr(uci);
179 err = hidp_get_connlist(&cl);
181 if (!err && put_user(cl.cnum, (uint32_t __user *) arg))
185 } else if (cmd == HIDPCONNADD) {
186 struct compat_hidp_connadd_req ca;
187 struct hidp_connadd_req __user *uca;
189 uca = compat_alloc_user_space(sizeof(*uca));
191 if (copy_from_user(&ca, (void __user *) arg, sizeof(ca)))
194 if (put_user(ca.ctrl_sock, &uca->ctrl_sock) ||
195 put_user(ca.intr_sock, &uca->intr_sock) ||
196 put_user(ca.parser, &uca->parser) ||
197 put_user(ca.rd_size, &uca->rd_size) ||
198 put_user(compat_ptr(ca.rd_data), &uca->rd_data) ||
199 put_user(ca.country, &uca->country) ||
200 put_user(ca.subclass, &uca->subclass) ||
201 put_user(ca.vendor, &uca->vendor) ||
202 put_user(ca.product, &uca->product) ||
203 put_user(ca.version, &uca->version) ||
204 put_user(ca.flags, &uca->flags) ||
205 put_user(ca.idle_to, &uca->idle_to) ||
206 copy_to_user(&uca->name[0], &ca.name[0], 128))
209 arg = (unsigned long) uca;
211 /* Fall through. We don't actually write back any _changes_
212 to the structure anyway, so there's no need to copy back
213 into the original compat version */
216 return hidp_sock_ioctl(sock, cmd, arg);
220 static const struct proto_ops hidp_sock_ops = {
221 .family = PF_BLUETOOTH,
222 .owner = THIS_MODULE,
223 .release = hidp_sock_release,
224 .ioctl = hidp_sock_ioctl,
226 .compat_ioctl = hidp_sock_compat_ioctl,
228 .bind = sock_no_bind,
229 .getname = sock_no_getname,
230 .sendmsg = sock_no_sendmsg,
231 .recvmsg = sock_no_recvmsg,
232 .poll = sock_no_poll,
233 .listen = sock_no_listen,
234 .shutdown = sock_no_shutdown,
235 .setsockopt = sock_no_setsockopt,
236 .getsockopt = sock_no_getsockopt,
237 .connect = sock_no_connect,
238 .socketpair = sock_no_socketpair,
239 .accept = sock_no_accept,
243 static struct proto hidp_proto = {
245 .owner = THIS_MODULE,
246 .obj_size = sizeof(struct bt_sock)
249 static int hidp_sock_create(struct socket *sock, int protocol)
253 BT_DBG("sock %p", sock);
255 if (sock->type != SOCK_RAW)
256 return -ESOCKTNOSUPPORT;
258 sk = sk_alloc(PF_BLUETOOTH, GFP_ATOMIC, &hidp_proto, 1);
262 sock_init_data(sock, sk);
264 sock->ops = &hidp_sock_ops;
266 sock->state = SS_UNCONNECTED;
268 sock_reset_flag(sk, SOCK_ZAPPED);
270 sk->sk_protocol = protocol;
271 sk->sk_state = BT_OPEN;
276 static struct net_proto_family hidp_sock_family_ops = {
277 .family = PF_BLUETOOTH,
278 .owner = THIS_MODULE,
279 .create = hidp_sock_create
282 int __init hidp_init_sockets(void)
286 err = proto_register(&hidp_proto, 0);
290 err = bt_sock_register(BTPROTO_HIDP, &hidp_sock_family_ops);
297 BT_ERR("Can't register HIDP socket");
298 proto_unregister(&hidp_proto);
302 void __exit hidp_cleanup_sockets(void)
304 if (bt_sock_unregister(BTPROTO_HIDP) < 0)
305 BT_ERR("Can't unregister HIDP socket");
307 proto_unregister(&hidp_proto);