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/compat.h>
24 #include <linux/export.h>
25 #include <linux/file.h>
29 static struct bt_sock_list hidp_sk_list = {
30 .lock = __RW_LOCK_UNLOCKED(hidp_sk_list.lock)
33 static int hidp_sock_release(struct socket *sock)
35 struct sock *sk = sock->sk;
37 BT_DBG("sock %p sk %p", sock, sk);
42 bt_sock_unlink(&hidp_sk_list, sk);
50 static int do_hidp_sock_ioctl(struct socket *sock, unsigned int cmd, void __user *argp)
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 %p", cmd, argp);
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);
79 ca.name[sizeof(ca.name)-1] = 0;
81 err = hidp_connection_add(&ca, csock, isock);
82 if (!err && copy_to_user(argp, &ca, sizeof(ca)))
91 if (!capable(CAP_NET_ADMIN))
94 if (copy_from_user(&cd, argp, sizeof(cd)))
97 return hidp_connection_del(&cd);
100 if (copy_from_user(&cl, argp, sizeof(cl)))
106 err = hidp_get_connlist(&cl);
107 if (!err && copy_to_user(argp, &cl, sizeof(cl)))
112 case HIDPGETCONNINFO:
113 if (copy_from_user(&ci, argp, sizeof(ci)))
116 err = hidp_get_conninfo(&ci);
117 if (!err && copy_to_user(argp, &ci, sizeof(ci)))
126 static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
128 return do_hidp_sock_ioctl(sock, cmd, (void __user *)arg);
132 struct compat_hidp_connadd_req {
133 int ctrl_sock; /* Connected control socket */
134 int intr_sock; /* Connected interrupt socket */
137 compat_uptr_t rd_data;
148 static int hidp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
150 void __user *argp = compat_ptr(arg);
153 if (cmd == HIDPGETCONNLIST) {
154 struct hidp_connlist_req cl;
155 u32 __user *p = argp;
158 if (get_user(cl.cnum, p) || get_user(uci, p + 1))
161 cl.ci = compat_ptr(uci);
166 err = hidp_get_connlist(&cl);
168 if (!err && put_user(cl.cnum, p))
172 } else if (cmd == HIDPCONNADD) {
173 struct compat_hidp_connadd_req ca32;
174 struct hidp_connadd_req ca;
175 struct socket *csock;
176 struct socket *isock;
178 if (!capable(CAP_NET_ADMIN))
181 if (copy_from_user(&ca32, (void __user *) arg, sizeof(ca32)))
184 ca.ctrl_sock = ca32.ctrl_sock;
185 ca.intr_sock = ca32.intr_sock;
186 ca.parser = ca32.parser;
187 ca.rd_size = ca32.rd_size;
188 ca.rd_data = compat_ptr(ca32.rd_data);
189 ca.country = ca32.country;
190 ca.subclass = ca32.subclass;
191 ca.vendor = ca32.vendor;
192 ca.product = ca32.product;
193 ca.version = ca32.version;
194 ca.flags = ca32.flags;
195 ca.idle_to = ca32.idle_to;
196 ca32.name[sizeof(ca32.name) - 1] = '\0';
197 memcpy(ca.name, ca32.name, 128);
199 csock = sockfd_lookup(ca.ctrl_sock, &err);
203 isock = sockfd_lookup(ca.intr_sock, &err);
209 err = hidp_connection_add(&ca, csock, isock);
210 if (!err && copy_to_user(argp, &ca32, sizeof(ca32)))
219 return hidp_sock_ioctl(sock, cmd, arg);
223 static const struct proto_ops hidp_sock_ops = {
224 .family = PF_BLUETOOTH,
225 .owner = THIS_MODULE,
226 .release = hidp_sock_release,
227 .ioctl = hidp_sock_ioctl,
229 .compat_ioctl = hidp_sock_compat_ioctl,
231 .bind = sock_no_bind,
232 .getname = sock_no_getname,
233 .sendmsg = sock_no_sendmsg,
234 .recvmsg = sock_no_recvmsg,
235 .listen = sock_no_listen,
236 .shutdown = sock_no_shutdown,
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 net *net, struct socket *sock, int protocol,
254 BT_DBG("sock %p", sock);
256 if (sock->type != SOCK_RAW)
257 return -ESOCKTNOSUPPORT;
259 sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hidp_proto, kern);
263 sock_init_data(sock, sk);
265 sock->ops = &hidp_sock_ops;
267 sock->state = SS_UNCONNECTED;
269 sock_reset_flag(sk, SOCK_ZAPPED);
271 sk->sk_protocol = protocol;
272 sk->sk_state = BT_OPEN;
274 bt_sock_link(&hidp_sk_list, sk);
279 static const struct net_proto_family hidp_sock_family_ops = {
280 .family = PF_BLUETOOTH,
281 .owner = THIS_MODULE,
282 .create = hidp_sock_create
285 int __init hidp_init_sockets(void)
289 err = proto_register(&hidp_proto, 0);
293 err = bt_sock_register(BTPROTO_HIDP, &hidp_sock_family_ops);
295 BT_ERR("Can't register HIDP socket");
299 err = bt_procfs_init(&init_net, "hidp", &hidp_sk_list, NULL);
301 BT_ERR("Failed to create HIDP proc file");
302 bt_sock_unregister(BTPROTO_HIDP);
306 BT_INFO("HIDP socket layer initialized");
311 proto_unregister(&hidp_proto);
315 void __exit hidp_cleanup_sockets(void)
317 bt_procfs_cleanup(&init_net, "hidp");
318 bt_sock_unregister(BTPROTO_HIDP);
319 proto_unregister(&hidp_proto);