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/export.h>
24 #include <linux/file.h>
28 static struct bt_sock_list hidp_sk_list = {
29 .lock = __RW_LOCK_UNLOCKED(hidp_sk_list.lock)
32 static int hidp_sock_release(struct socket *sock)
34 struct sock *sk = sock->sk;
36 BT_DBG("sock %p sk %p", sock, sk);
41 bt_sock_unlink(&hidp_sk_list, sk);
49 static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
51 void __user *argp = (void __user *) arg;
52 struct hidp_connadd_req ca;
53 struct hidp_conndel_req cd;
54 struct hidp_connlist_req cl;
55 struct hidp_conninfo ci;
60 BT_DBG("cmd %x arg %lx", cmd, arg);
64 if (!capable(CAP_NET_ADMIN))
67 if (copy_from_user(&ca, argp, sizeof(ca)))
70 csock = sockfd_lookup(ca.ctrl_sock, &err);
74 isock = sockfd_lookup(ca.intr_sock, &err);
80 if (csock->sk->sk_state != BT_CONNECTED ||
81 isock->sk->sk_state != BT_CONNECTED) {
87 err = hidp_add_connection(&ca, csock, isock);
89 if (copy_to_user(argp, &ca, sizeof(ca)))
99 if (!capable(CAP_NET_ADMIN))
102 if (copy_from_user(&cd, argp, sizeof(cd)))
105 return hidp_del_connection(&cd);
107 case HIDPGETCONNLIST:
108 if (copy_from_user(&cl, argp, sizeof(cl)))
114 err = hidp_get_connlist(&cl);
115 if (!err && copy_to_user(argp, &cl, sizeof(cl)))
120 case HIDPGETCONNINFO:
121 if (copy_from_user(&ci, argp, sizeof(ci)))
124 err = hidp_get_conninfo(&ci);
125 if (!err && copy_to_user(argp, &ci, sizeof(ci)))
135 struct compat_hidp_connadd_req {
136 int ctrl_sock; /* Connected control socket */
137 int intr_sock; /* Connected interrupt socket */
140 compat_uptr_t rd_data;
151 static int hidp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
153 if (cmd == HIDPGETCONNLIST) {
154 struct hidp_connlist_req cl;
158 if (get_user(cl.cnum, (u32 __user *) arg) ||
159 get_user(uci, (u32 __user *) (arg + 4)))
162 cl.ci = compat_ptr(uci);
167 err = hidp_get_connlist(&cl);
169 if (!err && put_user(cl.cnum, (u32 __user *) arg))
173 } else if (cmd == HIDPCONNADD) {
174 struct compat_hidp_connadd_req ca;
175 struct hidp_connadd_req __user *uca;
177 uca = compat_alloc_user_space(sizeof(*uca));
179 if (copy_from_user(&ca, (void __user *) arg, sizeof(ca)))
182 if (put_user(ca.ctrl_sock, &uca->ctrl_sock) ||
183 put_user(ca.intr_sock, &uca->intr_sock) ||
184 put_user(ca.parser, &uca->parser) ||
185 put_user(ca.rd_size, &uca->rd_size) ||
186 put_user(compat_ptr(ca.rd_data), &uca->rd_data) ||
187 put_user(ca.country, &uca->country) ||
188 put_user(ca.subclass, &uca->subclass) ||
189 put_user(ca.vendor, &uca->vendor) ||
190 put_user(ca.product, &uca->product) ||
191 put_user(ca.version, &uca->version) ||
192 put_user(ca.flags, &uca->flags) ||
193 put_user(ca.idle_to, &uca->idle_to) ||
194 copy_to_user(&uca->name[0], &ca.name[0], 128))
197 arg = (unsigned long) uca;
199 /* Fall through. We don't actually write back any _changes_
200 to the structure anyway, so there's no need to copy back
201 into the original compat version */
204 return hidp_sock_ioctl(sock, cmd, arg);
208 static const struct proto_ops hidp_sock_ops = {
209 .family = PF_BLUETOOTH,
210 .owner = THIS_MODULE,
211 .release = hidp_sock_release,
212 .ioctl = hidp_sock_ioctl,
214 .compat_ioctl = hidp_sock_compat_ioctl,
216 .bind = sock_no_bind,
217 .getname = sock_no_getname,
218 .sendmsg = sock_no_sendmsg,
219 .recvmsg = sock_no_recvmsg,
220 .poll = sock_no_poll,
221 .listen = sock_no_listen,
222 .shutdown = sock_no_shutdown,
223 .setsockopt = sock_no_setsockopt,
224 .getsockopt = sock_no_getsockopt,
225 .connect = sock_no_connect,
226 .socketpair = sock_no_socketpair,
227 .accept = sock_no_accept,
231 static struct proto hidp_proto = {
233 .owner = THIS_MODULE,
234 .obj_size = sizeof(struct bt_sock)
237 static int hidp_sock_create(struct net *net, struct socket *sock, int protocol,
242 BT_DBG("sock %p", sock);
244 if (sock->type != SOCK_RAW)
245 return -ESOCKTNOSUPPORT;
247 sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hidp_proto);
251 sock_init_data(sock, sk);
253 sock->ops = &hidp_sock_ops;
255 sock->state = SS_UNCONNECTED;
257 sock_reset_flag(sk, SOCK_ZAPPED);
259 sk->sk_protocol = protocol;
260 sk->sk_state = BT_OPEN;
262 bt_sock_link(&hidp_sk_list, sk);
267 static const struct net_proto_family hidp_sock_family_ops = {
268 .family = PF_BLUETOOTH,
269 .owner = THIS_MODULE,
270 .create = hidp_sock_create
273 int __init hidp_init_sockets(void)
277 err = proto_register(&hidp_proto, 0);
281 err = bt_sock_register(BTPROTO_HIDP, &hidp_sock_family_ops);
283 BT_ERR("Can't register HIDP socket");
287 err = bt_procfs_init(THIS_MODULE, &init_net, "hidp", &hidp_sk_list, NULL);
289 BT_ERR("Failed to create HIDP proc file");
290 bt_sock_unregister(BTPROTO_HIDP);
294 BT_INFO("HIDP socket layer initialized");
299 BT_ERR("Can't register HIDP socket");
300 proto_unregister(&hidp_proto);
304 void __exit hidp_cleanup_sockets(void)
306 bt_procfs_cleanup(&init_net, "hidp");
307 if (bt_sock_unregister(BTPROTO_HIDP) < 0)
308 BT_ERR("Can't unregister HIDP socket");
310 proto_unregister(&hidp_proto);