Commit | Line | Data |
---|---|---|
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 | ||
1da177e4 LT |
23 | #include <linux/module.h> |
24 | ||
25 | #include <linux/types.h> | |
4fc268d2 | 26 | #include <linux/capability.h> |
1da177e4 LT |
27 | #include <linux/errno.h> |
28 | #include <linux/kernel.h> | |
1da177e4 LT |
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> | |
e9c5702e | 37 | #include <linux/compat.h> |
1da177e4 LT |
38 | #include <net/sock.h> |
39 | ||
40 | #include "hidp.h" | |
41 | ||
1da177e4 LT |
42 | static int hidp_sock_release(struct socket *sock) |
43 | { | |
44 | struct sock *sk = sock->sk; | |
45 | ||
46 | BT_DBG("sock %p sk %p", sock, sk); | |
47 | ||
48 | if (!sk) | |
49 | return 0; | |
50 | ||
51 | sock_orphan(sk); | |
52 | sock_put(sk); | |
53 | ||
54 | return 0; | |
55 | } | |
56 | ||
57 | static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
58 | { | |
59 | void __user *argp = (void __user *) arg; | |
60 | struct hidp_connadd_req ca; | |
61 | struct hidp_conndel_req cd; | |
62 | struct hidp_connlist_req cl; | |
63 | struct hidp_conninfo ci; | |
64 | struct socket *csock; | |
65 | struct socket *isock; | |
66 | int err; | |
67 | ||
68 | BT_DBG("cmd %x arg %lx", cmd, arg); | |
69 | ||
70 | switch (cmd) { | |
71 | case HIDPCONNADD: | |
72 | if (!capable(CAP_NET_ADMIN)) | |
73 | return -EACCES; | |
74 | ||
75 | if (copy_from_user(&ca, argp, sizeof(ca))) | |
76 | return -EFAULT; | |
77 | ||
78 | csock = sockfd_lookup(ca.ctrl_sock, &err); | |
79 | if (!csock) | |
80 | return err; | |
81 | ||
82 | isock = sockfd_lookup(ca.intr_sock, &err); | |
83 | if (!isock) { | |
67b23219 | 84 | sockfd_put(csock); |
1da177e4 LT |
85 | return err; |
86 | } | |
87 | ||
88 | if (csock->sk->sk_state != BT_CONNECTED || isock->sk->sk_state != BT_CONNECTED) { | |
67b23219 JL |
89 | sockfd_put(csock); |
90 | sockfd_put(isock); | |
1da177e4 LT |
91 | return -EBADFD; |
92 | } | |
93 | ||
94 | err = hidp_add_connection(&ca, csock, isock); | |
95 | if (!err) { | |
96 | if (copy_to_user(argp, &ca, sizeof(ca))) | |
97 | err = -EFAULT; | |
98 | } else { | |
67b23219 JL |
99 | sockfd_put(csock); |
100 | sockfd_put(isock); | |
1da177e4 LT |
101 | } |
102 | ||
103 | return err; | |
104 | ||
105 | case HIDPCONNDEL: | |
106 | if (!capable(CAP_NET_ADMIN)) | |
107 | return -EACCES; | |
108 | ||
109 | if (copy_from_user(&cd, argp, sizeof(cd))) | |
110 | return -EFAULT; | |
111 | ||
112 | return hidp_del_connection(&cd); | |
113 | ||
114 | case HIDPGETCONNLIST: | |
115 | if (copy_from_user(&cl, argp, sizeof(cl))) | |
116 | return -EFAULT; | |
117 | ||
118 | if (cl.cnum <= 0) | |
119 | return -EINVAL; | |
120 | ||
121 | err = hidp_get_connlist(&cl); | |
122 | if (!err && copy_to_user(argp, &cl, sizeof(cl))) | |
123 | return -EFAULT; | |
124 | ||
125 | return err; | |
126 | ||
127 | case HIDPGETCONNINFO: | |
128 | if (copy_from_user(&ci, argp, sizeof(ci))) | |
129 | return -EFAULT; | |
130 | ||
131 | err = hidp_get_conninfo(&ci); | |
132 | if (!err && copy_to_user(argp, &ci, sizeof(ci))) | |
133 | return -EFAULT; | |
134 | ||
135 | return err; | |
136 | } | |
137 | ||
138 | return -EINVAL; | |
139 | } | |
140 | ||
e9c5702e MH |
141 | #ifdef CONFIG_COMPAT |
142 | struct compat_hidp_connadd_req { | |
143 | int ctrl_sock; // Connected control socket | |
144 | int intr_sock; // Connteted interrupt socket | |
145 | __u16 parser; | |
146 | __u16 rd_size; | |
147 | compat_uptr_t rd_data; | |
148 | __u8 country; | |
149 | __u8 subclass; | |
150 | __u16 vendor; | |
151 | __u16 product; | |
152 | __u16 version; | |
153 | __u32 flags; | |
154 | __u32 idle_to; | |
155 | char name[128]; | |
156 | }; | |
157 | ||
158 | static int hidp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
159 | { | |
160 | if (cmd == HIDPGETCONNLIST) { | |
161 | struct hidp_connlist_req cl; | |
162 | uint32_t uci; | |
163 | int err; | |
164 | ||
165 | if (get_user(cl.cnum, (uint32_t __user *) arg) || | |
166 | get_user(uci, (u32 __user *) (arg + 4))) | |
167 | return -EFAULT; | |
168 | ||
169 | cl.ci = compat_ptr(uci); | |
170 | ||
171 | if (cl.cnum <= 0) | |
172 | return -EINVAL; | |
173 | ||
174 | err = hidp_get_connlist(&cl); | |
175 | ||
176 | if (!err && put_user(cl.cnum, (uint32_t __user *) arg)) | |
177 | err = -EFAULT; | |
178 | ||
179 | return err; | |
180 | } else if (cmd == HIDPCONNADD) { | |
181 | struct compat_hidp_connadd_req ca; | |
182 | struct hidp_connadd_req __user *uca; | |
183 | ||
184 | uca = compat_alloc_user_space(sizeof(*uca)); | |
185 | ||
55e74744 | 186 | if (copy_from_user(&ca, (void __user *) arg, sizeof(ca))) |
e9c5702e MH |
187 | return -EFAULT; |
188 | ||
189 | if (put_user(ca.ctrl_sock, &uca->ctrl_sock) || | |
190 | put_user(ca.intr_sock, &uca->intr_sock) || | |
191 | put_user(ca.parser, &uca->parser) || | |
a83d6c0d | 192 | put_user(ca.rd_size, &uca->rd_size) || |
e9c5702e MH |
193 | put_user(compat_ptr(ca.rd_data), &uca->rd_data) || |
194 | put_user(ca.country, &uca->country) || | |
195 | put_user(ca.subclass, &uca->subclass) || | |
196 | put_user(ca.vendor, &uca->vendor) || | |
197 | put_user(ca.product, &uca->product) || | |
198 | put_user(ca.version, &uca->version) || | |
199 | put_user(ca.flags, &uca->flags) || | |
200 | put_user(ca.idle_to, &uca->idle_to) || | |
201 | copy_to_user(&uca->name[0], &ca.name[0], 128)) | |
202 | return -EFAULT; | |
8e87d142 | 203 | |
e9c5702e MH |
204 | arg = (unsigned long) uca; |
205 | ||
206 | /* Fall through. We don't actually write back any _changes_ | |
207 | to the structure anyway, so there's no need to copy back | |
208 | into the original compat version */ | |
209 | } | |
210 | ||
211 | return hidp_sock_ioctl(sock, cmd, arg); | |
212 | } | |
213 | #endif | |
214 | ||
90ddc4f0 | 215 | static const struct proto_ops hidp_sock_ops = { |
1da177e4 LT |
216 | .family = PF_BLUETOOTH, |
217 | .owner = THIS_MODULE, | |
218 | .release = hidp_sock_release, | |
219 | .ioctl = hidp_sock_ioctl, | |
e9c5702e MH |
220 | #ifdef CONFIG_COMPAT |
221 | .compat_ioctl = hidp_sock_compat_ioctl, | |
222 | #endif | |
1da177e4 LT |
223 | .bind = sock_no_bind, |
224 | .getname = sock_no_getname, | |
225 | .sendmsg = sock_no_sendmsg, | |
226 | .recvmsg = sock_no_recvmsg, | |
227 | .poll = sock_no_poll, | |
228 | .listen = sock_no_listen, | |
229 | .shutdown = sock_no_shutdown, | |
230 | .setsockopt = sock_no_setsockopt, | |
231 | .getsockopt = sock_no_getsockopt, | |
232 | .connect = sock_no_connect, | |
233 | .socketpair = sock_no_socketpair, | |
234 | .accept = sock_no_accept, | |
235 | .mmap = sock_no_mmap | |
236 | }; | |
237 | ||
238 | static struct proto hidp_proto = { | |
239 | .name = "HIDP", | |
240 | .owner = THIS_MODULE, | |
241 | .obj_size = sizeof(struct bt_sock) | |
242 | }; | |
243 | ||
3f378b68 EP |
244 | static int hidp_sock_create(struct net *net, struct socket *sock, int protocol, |
245 | int kern) | |
1da177e4 LT |
246 | { |
247 | struct sock *sk; | |
248 | ||
249 | BT_DBG("sock %p", sock); | |
250 | ||
251 | if (sock->type != SOCK_RAW) | |
252 | return -ESOCKTNOSUPPORT; | |
253 | ||
6257ff21 | 254 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hidp_proto); |
1da177e4 LT |
255 | if (!sk) |
256 | return -ENOMEM; | |
257 | ||
258 | sock_init_data(sock, sk); | |
259 | ||
260 | sock->ops = &hidp_sock_ops; | |
261 | ||
262 | sock->state = SS_UNCONNECTED; | |
263 | ||
264 | sock_reset_flag(sk, SOCK_ZAPPED); | |
265 | ||
266 | sk->sk_protocol = protocol; | |
267 | sk->sk_state = BT_OPEN; | |
268 | ||
269 | return 0; | |
270 | } | |
271 | ||
ec1b4cf7 | 272 | static const struct net_proto_family hidp_sock_family_ops = { |
1da177e4 LT |
273 | .family = PF_BLUETOOTH, |
274 | .owner = THIS_MODULE, | |
275 | .create = hidp_sock_create | |
276 | }; | |
277 | ||
278 | int __init hidp_init_sockets(void) | |
279 | { | |
280 | int err; | |
281 | ||
282 | err = proto_register(&hidp_proto, 0); | |
283 | if (err < 0) | |
284 | return err; | |
285 | ||
286 | err = bt_sock_register(BTPROTO_HIDP, &hidp_sock_family_ops); | |
287 | if (err < 0) | |
288 | goto error; | |
289 | ||
290 | return 0; | |
291 | ||
292 | error: | |
293 | BT_ERR("Can't register HIDP socket"); | |
294 | proto_unregister(&hidp_proto); | |
295 | return err; | |
296 | } | |
297 | ||
298 | void __exit hidp_cleanup_sockets(void) | |
299 | { | |
300 | if (bt_sock_unregister(BTPROTO_HIDP) < 0) | |
301 | BT_ERR("Can't unregister HIDP socket"); | |
302 | ||
303 | proto_unregister(&hidp_proto); | |
304 | } |