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 do_hidp_sock_ioctl(struct socket *sock, unsigned int cmd, void __user *argp)
51 struct hidp_connadd_req ca;
52 struct hidp_conndel_req cd;
53 struct hidp_connlist_req cl;
54 struct hidp_conninfo ci;
59 BT_DBG("cmd %x arg %p", cmd, argp);
63 if (!capable(CAP_NET_ADMIN))
66 if (copy_from_user(&ca, argp, sizeof(ca)))
69 csock = sockfd_lookup(ca.ctrl_sock, &err);
73 isock = sockfd_lookup(ca.intr_sock, &err);
78 ca.name[sizeof(ca.name)-1] = 0;
80 err = hidp_connection_add(&ca, csock, isock);
81 if (!err && copy_to_user(argp, &ca, sizeof(ca)))
90 if (!capable(CAP_NET_ADMIN))
93 if (copy_from_user(&cd, argp, sizeof(cd)))
96 return hidp_connection_del(&cd);
99 if (copy_from_user(&cl, argp, sizeof(cl)))
105 err = hidp_get_connlist(&cl);
106 if (!err && copy_to_user(argp, &cl, sizeof(cl)))
111 case HIDPGETCONNINFO:
112 if (copy_from_user(&ci, argp, sizeof(ci)))
115 err = hidp_get_conninfo(&ci);
116 if (!err && copy_to_user(argp, &ci, sizeof(ci)))
125 static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
127 return do_hidp_sock_ioctl(sock, cmd, (void __user *)arg);
131 struct compat_hidp_connadd_req {
132 int ctrl_sock; /* Connected control socket */
133 int intr_sock; /* Connected interrupt socket */
136 compat_uptr_t rd_data;
147 static int hidp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
149 void __user *argp = compat_ptr(arg);
152 if (cmd == HIDPGETCONNLIST) {
153 struct hidp_connlist_req cl;
154 u32 __user *p = argp;
157 if (get_user(cl.cnum, p) || get_user(uci, p + 1))
160 cl.ci = compat_ptr(uci);
165 err = hidp_get_connlist(&cl);
167 if (!err && put_user(cl.cnum, p))
171 } else if (cmd == HIDPCONNADD) {
172 struct compat_hidp_connadd_req ca32;
173 struct hidp_connadd_req ca;
174 struct socket *csock;
175 struct socket *isock;
177 if (!capable(CAP_NET_ADMIN))
180 if (copy_from_user(&ca32, (void __user *) arg, sizeof(ca32)))
183 ca.ctrl_sock = ca32.ctrl_sock;
184 ca.intr_sock = ca32.intr_sock;
185 ca.parser = ca32.parser;
186 ca.rd_size = ca32.rd_size;
187 ca.rd_data = compat_ptr(ca32.rd_data);
188 ca.country = ca32.country;
189 ca.subclass = ca32.subclass;
190 ca.vendor = ca32.vendor;
191 ca.product = ca32.product;
192 ca.version = ca32.version;
193 ca.flags = ca32.flags;
194 ca.idle_to = ca32.idle_to;
195 ca32.name[sizeof(ca32.name) - 1] = '\0';
196 memcpy(ca.name, ca32.name, 128);
198 csock = sockfd_lookup(ca.ctrl_sock, &err);
202 isock = sockfd_lookup(ca.intr_sock, &err);
208 err = hidp_connection_add(&ca, csock, isock);
209 if (!err && copy_to_user(argp, &ca32, sizeof(ca32)))
218 return hidp_sock_ioctl(sock, cmd, arg);
222 static const struct proto_ops hidp_sock_ops = {
223 .family = PF_BLUETOOTH,
224 .owner = THIS_MODULE,
225 .release = hidp_sock_release,
226 .ioctl = hidp_sock_ioctl,
228 .compat_ioctl = hidp_sock_compat_ioctl,
230 .bind = sock_no_bind,
231 .getname = sock_no_getname,
232 .sendmsg = sock_no_sendmsg,
233 .recvmsg = sock_no_recvmsg,
234 .listen = sock_no_listen,
235 .shutdown = sock_no_shutdown,
236 .setsockopt = sock_no_setsockopt,
237 .getsockopt = sock_no_getsockopt,
238 .connect = sock_no_connect,
239 .socketpair = sock_no_socketpair,
240 .accept = sock_no_accept,
244 static struct proto hidp_proto = {
246 .owner = THIS_MODULE,
247 .obj_size = sizeof(struct bt_sock)
250 static int hidp_sock_create(struct net *net, struct socket *sock, int protocol,
255 BT_DBG("sock %p", sock);
257 if (sock->type != SOCK_RAW)
258 return -ESOCKTNOSUPPORT;
260 sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hidp_proto, kern);
264 sock_init_data(sock, sk);
266 sock->ops = &hidp_sock_ops;
268 sock->state = SS_UNCONNECTED;
270 sock_reset_flag(sk, SOCK_ZAPPED);
272 sk->sk_protocol = protocol;
273 sk->sk_state = BT_OPEN;
275 bt_sock_link(&hidp_sk_list, sk);
280 static const struct net_proto_family hidp_sock_family_ops = {
281 .family = PF_BLUETOOTH,
282 .owner = THIS_MODULE,
283 .create = hidp_sock_create
286 int __init hidp_init_sockets(void)
290 err = proto_register(&hidp_proto, 0);
294 err = bt_sock_register(BTPROTO_HIDP, &hidp_sock_family_ops);
296 BT_ERR("Can't register HIDP socket");
300 err = bt_procfs_init(&init_net, "hidp", &hidp_sk_list, NULL);
302 BT_ERR("Failed to create HIDP proc file");
303 bt_sock_unregister(BTPROTO_HIDP);
307 BT_INFO("HIDP socket layer initialized");
312 proto_unregister(&hidp_proto);
316 void __exit hidp_cleanup_sockets(void)
318 bt_procfs_cleanup(&init_net, "hidp");
319 bt_sock_unregister(BTPROTO_HIDP);
320 proto_unregister(&hidp_proto);