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Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | HIDP implementation for Linux Bluetooth stack (BlueZ). |
3 | Copyright (C) 2003-2004 Marcel Holtmann <marcel@holtmann.org> | |
4 | ||
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; | |
8 | ||
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 | |
8e87d142 YH |
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 | |
1da177e4 LT |
16 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
17 | ||
8e87d142 YH |
18 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
19 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
20 | SOFTWARE IS DISCLAIMED. |
21 | */ | |
22 | ||
8c520a59 | 23 | #include <linux/export.h> |
1da177e4 | 24 | #include <linux/file.h> |
1da177e4 LT |
25 | |
26 | #include "hidp.h" | |
27 | ||
5c6ad8ee MY |
28 | static struct bt_sock_list hidp_sk_list = { |
29 | .lock = __RW_LOCK_UNLOCKED(hidp_sk_list.lock) | |
30 | }; | |
31 | ||
1da177e4 LT |
32 | static int hidp_sock_release(struct socket *sock) |
33 | { | |
34 | struct sock *sk = sock->sk; | |
35 | ||
36 | BT_DBG("sock %p sk %p", sock, sk); | |
37 | ||
38 | if (!sk) | |
39 | return 0; | |
40 | ||
5c6ad8ee MY |
41 | bt_sock_unlink(&hidp_sk_list, sk); |
42 | ||
1da177e4 LT |
43 | sock_orphan(sk); |
44 | sock_put(sk); | |
45 | ||
46 | return 0; | |
47 | } | |
48 | ||
702ec307 | 49 | static int do_hidp_sock_ioctl(struct socket *sock, unsigned int cmd, void __user *argp) |
1da177e4 | 50 | { |
1da177e4 LT |
51 | struct hidp_connadd_req ca; |
52 | struct hidp_conndel_req cd; | |
53 | struct hidp_connlist_req cl; | |
54 | struct hidp_conninfo ci; | |
55 | struct socket *csock; | |
56 | struct socket *isock; | |
57 | int err; | |
58 | ||
702ec307 | 59 | BT_DBG("cmd %x arg %p", cmd, argp); |
1da177e4 LT |
60 | |
61 | switch (cmd) { | |
62 | case HIDPCONNADD: | |
63 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 64 | return -EPERM; |
1da177e4 LT |
65 | |
66 | if (copy_from_user(&ca, argp, sizeof(ca))) | |
67 | return -EFAULT; | |
68 | ||
69 | csock = sockfd_lookup(ca.ctrl_sock, &err); | |
70 | if (!csock) | |
71 | return err; | |
72 | ||
73 | isock = sockfd_lookup(ca.intr_sock, &err); | |
74 | if (!isock) { | |
67b23219 | 75 | sockfd_put(csock); |
1da177e4 LT |
76 | return err; |
77 | } | |
a1616a5a | 78 | ca.name[sizeof(ca.name)-1] = 0; |
1da177e4 | 79 | |
5205185d DH |
80 | err = hidp_connection_add(&ca, csock, isock); |
81 | if (!err && copy_to_user(argp, &ca, sizeof(ca))) | |
82 | err = -EFAULT; | |
1da177e4 | 83 | |
5205185d DH |
84 | sockfd_put(csock); |
85 | sockfd_put(isock); | |
1da177e4 LT |
86 | |
87 | return err; | |
88 | ||
89 | case HIDPCONNDEL: | |
90 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 91 | return -EPERM; |
1da177e4 LT |
92 | |
93 | if (copy_from_user(&cd, argp, sizeof(cd))) | |
94 | return -EFAULT; | |
95 | ||
5205185d | 96 | return hidp_connection_del(&cd); |
1da177e4 LT |
97 | |
98 | case HIDPGETCONNLIST: | |
99 | if (copy_from_user(&cl, argp, sizeof(cl))) | |
100 | return -EFAULT; | |
101 | ||
102 | if (cl.cnum <= 0) | |
103 | return -EINVAL; | |
104 | ||
105 | err = hidp_get_connlist(&cl); | |
106 | if (!err && copy_to_user(argp, &cl, sizeof(cl))) | |
107 | return -EFAULT; | |
108 | ||
109 | return err; | |
110 | ||
111 | case HIDPGETCONNINFO: | |
112 | if (copy_from_user(&ci, argp, sizeof(ci))) | |
113 | return -EFAULT; | |
114 | ||
115 | err = hidp_get_conninfo(&ci); | |
116 | if (!err && copy_to_user(argp, &ci, sizeof(ci))) | |
117 | return -EFAULT; | |
118 | ||
119 | return err; | |
120 | } | |
121 | ||
122 | return -EINVAL; | |
123 | } | |
124 | ||
702ec307 AV |
125 | static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
126 | { | |
127 | return do_hidp_sock_ioctl(sock, cmd, (void __user *)arg); | |
128 | } | |
129 | ||
e9c5702e MH |
130 | #ifdef CONFIG_COMPAT |
131 | struct compat_hidp_connadd_req { | |
17f09a7e SJ |
132 | int ctrl_sock; /* Connected control socket */ |
133 | int intr_sock; /* Connected interrupt socket */ | |
e9c5702e MH |
134 | __u16 parser; |
135 | __u16 rd_size; | |
136 | compat_uptr_t rd_data; | |
137 | __u8 country; | |
138 | __u8 subclass; | |
139 | __u16 vendor; | |
140 | __u16 product; | |
141 | __u16 version; | |
142 | __u32 flags; | |
143 | __u32 idle_to; | |
144 | char name[128]; | |
145 | }; | |
146 | ||
147 | static int hidp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
148 | { | |
702ec307 AV |
149 | void __user *argp = compat_ptr(arg); |
150 | int err; | |
151 | ||
e9c5702e MH |
152 | if (cmd == HIDPGETCONNLIST) { |
153 | struct hidp_connlist_req cl; | |
702ec307 | 154 | u32 __user *p = argp; |
816a11d5 | 155 | u32 uci; |
e9c5702e | 156 | |
702ec307 | 157 | if (get_user(cl.cnum, p) || get_user(uci, p + 1)) |
e9c5702e MH |
158 | return -EFAULT; |
159 | ||
160 | cl.ci = compat_ptr(uci); | |
161 | ||
162 | if (cl.cnum <= 0) | |
163 | return -EINVAL; | |
164 | ||
165 | err = hidp_get_connlist(&cl); | |
166 | ||
702ec307 | 167 | if (!err && put_user(cl.cnum, p)) |
e9c5702e MH |
168 | err = -EFAULT; |
169 | ||
170 | return err; | |
171 | } else if (cmd == HIDPCONNADD) { | |
702ec307 AV |
172 | struct compat_hidp_connadd_req ca32; |
173 | struct hidp_connadd_req ca; | |
174 | struct socket *csock; | |
175 | struct socket *isock; | |
e9c5702e | 176 | |
702ec307 AV |
177 | if (!capable(CAP_NET_ADMIN)) |
178 | return -EPERM; | |
e9c5702e | 179 | |
702ec307 | 180 | if (copy_from_user(&ca32, (void __user *) arg, sizeof(ca32))) |
e9c5702e MH |
181 | return -EFAULT; |
182 | ||
702ec307 AV |
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 | memcpy(ca.name, ca32.name, 128); | |
196 | ||
197 | csock = sockfd_lookup(ca.ctrl_sock, &err); | |
198 | if (!csock) | |
199 | return err; | |
8e87d142 | 200 | |
702ec307 AV |
201 | isock = sockfd_lookup(ca.intr_sock, &err); |
202 | if (!isock) { | |
203 | sockfd_put(csock); | |
204 | return err; | |
205 | } | |
e9c5702e | 206 | |
702ec307 AV |
207 | err = hidp_connection_add(&ca, csock, isock); |
208 | if (!err && copy_to_user(argp, &ca32, sizeof(ca32))) | |
209 | err = -EFAULT; | |
210 | ||
211 | sockfd_put(csock); | |
212 | sockfd_put(isock); | |
213 | ||
214 | return err; | |
e9c5702e MH |
215 | } |
216 | ||
217 | return hidp_sock_ioctl(sock, cmd, arg); | |
218 | } | |
219 | #endif | |
220 | ||
90ddc4f0 | 221 | static const struct proto_ops hidp_sock_ops = { |
1da177e4 LT |
222 | .family = PF_BLUETOOTH, |
223 | .owner = THIS_MODULE, | |
224 | .release = hidp_sock_release, | |
225 | .ioctl = hidp_sock_ioctl, | |
e9c5702e MH |
226 | #ifdef CONFIG_COMPAT |
227 | .compat_ioctl = hidp_sock_compat_ioctl, | |
228 | #endif | |
1da177e4 LT |
229 | .bind = sock_no_bind, |
230 | .getname = sock_no_getname, | |
231 | .sendmsg = sock_no_sendmsg, | |
232 | .recvmsg = sock_no_recvmsg, | |
1da177e4 LT |
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, | |
240 | .mmap = sock_no_mmap | |
241 | }; | |
242 | ||
243 | static struct proto hidp_proto = { | |
244 | .name = "HIDP", | |
245 | .owner = THIS_MODULE, | |
246 | .obj_size = sizeof(struct bt_sock) | |
247 | }; | |
248 | ||
3f378b68 EP |
249 | static int hidp_sock_create(struct net *net, struct socket *sock, int protocol, |
250 | int kern) | |
1da177e4 LT |
251 | { |
252 | struct sock *sk; | |
253 | ||
254 | BT_DBG("sock %p", sock); | |
255 | ||
256 | if (sock->type != SOCK_RAW) | |
257 | return -ESOCKTNOSUPPORT; | |
258 | ||
11aa9c28 | 259 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hidp_proto, kern); |
1da177e4 LT |
260 | if (!sk) |
261 | return -ENOMEM; | |
262 | ||
263 | sock_init_data(sock, sk); | |
264 | ||
265 | sock->ops = &hidp_sock_ops; | |
266 | ||
267 | sock->state = SS_UNCONNECTED; | |
268 | ||
269 | sock_reset_flag(sk, SOCK_ZAPPED); | |
270 | ||
271 | sk->sk_protocol = protocol; | |
272 | sk->sk_state = BT_OPEN; | |
273 | ||
5c6ad8ee MY |
274 | bt_sock_link(&hidp_sk_list, sk); |
275 | ||
1da177e4 LT |
276 | return 0; |
277 | } | |
278 | ||
ec1b4cf7 | 279 | static const struct net_proto_family hidp_sock_family_ops = { |
1da177e4 LT |
280 | .family = PF_BLUETOOTH, |
281 | .owner = THIS_MODULE, | |
282 | .create = hidp_sock_create | |
283 | }; | |
284 | ||
285 | int __init hidp_init_sockets(void) | |
286 | { | |
287 | int err; | |
288 | ||
289 | err = proto_register(&hidp_proto, 0); | |
290 | if (err < 0) | |
291 | return err; | |
292 | ||
293 | err = bt_sock_register(BTPROTO_HIDP, &hidp_sock_family_ops); | |
5c6ad8ee MY |
294 | if (err < 0) { |
295 | BT_ERR("Can't register HIDP socket"); | |
1da177e4 | 296 | goto error; |
5c6ad8ee MY |
297 | } |
298 | ||
b0316615 | 299 | err = bt_procfs_init(&init_net, "hidp", &hidp_sk_list, NULL); |
5c6ad8ee MY |
300 | if (err < 0) { |
301 | BT_ERR("Failed to create HIDP proc file"); | |
302 | bt_sock_unregister(BTPROTO_HIDP); | |
303 | goto error; | |
304 | } | |
305 | ||
306 | BT_INFO("HIDP socket layer initialized"); | |
1da177e4 LT |
307 | |
308 | return 0; | |
309 | ||
310 | error: | |
1da177e4 LT |
311 | proto_unregister(&hidp_proto); |
312 | return err; | |
313 | } | |
314 | ||
315 | void __exit hidp_cleanup_sockets(void) | |
316 | { | |
5c6ad8ee | 317 | bt_procfs_cleanup(&init_net, "hidp"); |
5e9d7f86 | 318 | bt_sock_unregister(BTPROTO_HIDP); |
1da177e4 LT |
319 | proto_unregister(&hidp_proto); |
320 | } |