Commit | Line | Data |
---|---|---|
8e87d142 | 1 | /* |
1da177e4 LT |
2 | BNEP implementation for Linux Bluetooth stack (BlueZ). |
3 | Copyright (C) 2001-2002 Inventel Systemes | |
4 | Written 2001-2002 by | |
5 | David Libault <david.libault@inventel.fr> | |
6 | ||
7 | Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com> | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License version 2 as | |
11 | published by the Free Software Foundation; | |
12 | ||
13 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
14 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
15 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
16 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
17 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
18 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
19 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
20 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
21 | ||
8e87d142 YH |
22 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
23 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
24 | SOFTWARE IS DISCLAIMED. |
25 | */ | |
26 | ||
8c520a59 | 27 | #include <linux/export.h> |
1da177e4 | 28 | #include <linux/file.h> |
1da177e4 LT |
29 | |
30 | #include "bnep.h" | |
31 | ||
77cf5585 MY |
32 | static struct bt_sock_list bnep_sk_list = { |
33 | .lock = __RW_LOCK_UNLOCKED(bnep_sk_list.lock) | |
34 | }; | |
35 | ||
1da177e4 LT |
36 | static int bnep_sock_release(struct socket *sock) |
37 | { | |
38 | struct sock *sk = sock->sk; | |
39 | ||
40 | BT_DBG("sock %p sk %p", sock, sk); | |
41 | ||
42 | if (!sk) | |
43 | return 0; | |
44 | ||
77cf5585 MY |
45 | bt_sock_unlink(&bnep_sk_list, sk); |
46 | ||
1da177e4 LT |
47 | sock_orphan(sk); |
48 | sock_put(sk); | |
49 | return 0; | |
50 | } | |
51 | ||
52 | static int bnep_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
53 | { | |
54 | struct bnep_connlist_req cl; | |
55 | struct bnep_connadd_req ca; | |
56 | struct bnep_conndel_req cd; | |
57 | struct bnep_conninfo ci; | |
58 | struct socket *nsock; | |
59 | void __user *argp = (void __user *)arg; | |
836a061b | 60 | __u32 supp_feat = BIT(BNEP_SETUP_RESPONSE); |
1da177e4 LT |
61 | int err; |
62 | ||
63 | BT_DBG("cmd %x arg %lx", cmd, arg); | |
64 | ||
65 | switch (cmd) { | |
66 | case BNEPCONNADD: | |
67 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 68 | return -EPERM; |
1da177e4 LT |
69 | |
70 | if (copy_from_user(&ca, argp, sizeof(ca))) | |
71 | return -EFAULT; | |
8e87d142 | 72 | |
1da177e4 LT |
73 | nsock = sockfd_lookup(ca.sock, &err); |
74 | if (!nsock) | |
75 | return err; | |
76 | ||
77 | if (nsock->sk->sk_state != BT_CONNECTED) { | |
67b23219 | 78 | sockfd_put(nsock); |
1da177e4 LT |
79 | return -EBADFD; |
80 | } | |
43629f8f | 81 | ca.device[sizeof(ca.device)-1] = 0; |
1da177e4 LT |
82 | |
83 | err = bnep_add_connection(&ca, nsock); | |
84 | if (!err) { | |
8e87d142 | 85 | if (copy_to_user(argp, &ca, sizeof(ca))) |
1da177e4 LT |
86 | err = -EFAULT; |
87 | } else | |
67b23219 | 88 | sockfd_put(nsock); |
1da177e4 LT |
89 | |
90 | return err; | |
8e87d142 | 91 | |
1da177e4 LT |
92 | case BNEPCONNDEL: |
93 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 94 | return -EPERM; |
1da177e4 LT |
95 | |
96 | if (copy_from_user(&cd, argp, sizeof(cd))) | |
97 | return -EFAULT; | |
8e87d142 | 98 | |
1da177e4 LT |
99 | return bnep_del_connection(&cd); |
100 | ||
101 | case BNEPGETCONNLIST: | |
102 | if (copy_from_user(&cl, argp, sizeof(cl))) | |
103 | return -EFAULT; | |
104 | ||
105 | if (cl.cnum <= 0) | |
106 | return -EINVAL; | |
8e87d142 | 107 | |
1da177e4 LT |
108 | err = bnep_get_connlist(&cl); |
109 | if (!err && copy_to_user(argp, &cl, sizeof(cl))) | |
110 | return -EFAULT; | |
111 | ||
112 | return err; | |
113 | ||
114 | case BNEPGETCONNINFO: | |
115 | if (copy_from_user(&ci, argp, sizeof(ci))) | |
116 | return -EFAULT; | |
117 | ||
118 | err = bnep_get_conninfo(&ci); | |
119 | if (!err && copy_to_user(argp, &ci, sizeof(ci))) | |
120 | return -EFAULT; | |
121 | ||
122 | return err; | |
123 | ||
0477e2e8 GK |
124 | case BNEPGETSUPPFEAT: |
125 | if (copy_to_user(argp, &supp_feat, sizeof(supp_feat))) | |
126 | return -EFAULT; | |
127 | ||
128 | return 0; | |
129 | ||
1da177e4 LT |
130 | default: |
131 | return -EINVAL; | |
132 | } | |
133 | ||
134 | return 0; | |
135 | } | |
136 | ||
e9c5702e MH |
137 | #ifdef CONFIG_COMPAT |
138 | static int bnep_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
139 | { | |
140 | if (cmd == BNEPGETCONNLIST) { | |
141 | struct bnep_connlist_req cl; | |
816a11d5 | 142 | u32 uci; |
e9c5702e MH |
143 | int err; |
144 | ||
816a11d5 | 145 | if (get_user(cl.cnum, (u32 __user *) arg) || |
e9c5702e MH |
146 | get_user(uci, (u32 __user *) (arg + 4))) |
147 | return -EFAULT; | |
148 | ||
149 | cl.ci = compat_ptr(uci); | |
150 | ||
151 | if (cl.cnum <= 0) | |
152 | return -EINVAL; | |
8e87d142 | 153 | |
e9c5702e MH |
154 | err = bnep_get_connlist(&cl); |
155 | ||
816a11d5 | 156 | if (!err && put_user(cl.cnum, (u32 __user *) arg)) |
e9c5702e MH |
157 | err = -EFAULT; |
158 | ||
159 | return err; | |
160 | } | |
161 | ||
162 | return bnep_sock_ioctl(sock, cmd, arg); | |
163 | } | |
164 | #endif | |
165 | ||
90ddc4f0 | 166 | static const struct proto_ops bnep_sock_ops = { |
e9c5702e MH |
167 | .family = PF_BLUETOOTH, |
168 | .owner = THIS_MODULE, | |
169 | .release = bnep_sock_release, | |
170 | .ioctl = bnep_sock_ioctl, | |
171 | #ifdef CONFIG_COMPAT | |
172 | .compat_ioctl = bnep_sock_compat_ioctl, | |
173 | #endif | |
174 | .bind = sock_no_bind, | |
175 | .getname = sock_no_getname, | |
176 | .sendmsg = sock_no_sendmsg, | |
177 | .recvmsg = sock_no_recvmsg, | |
178 | .poll = sock_no_poll, | |
179 | .listen = sock_no_listen, | |
180 | .shutdown = sock_no_shutdown, | |
181 | .setsockopt = sock_no_setsockopt, | |
182 | .getsockopt = sock_no_getsockopt, | |
183 | .connect = sock_no_connect, | |
184 | .socketpair = sock_no_socketpair, | |
185 | .accept = sock_no_accept, | |
186 | .mmap = sock_no_mmap | |
1da177e4 LT |
187 | }; |
188 | ||
189 | static struct proto bnep_proto = { | |
190 | .name = "BNEP", | |
191 | .owner = THIS_MODULE, | |
192 | .obj_size = sizeof(struct bt_sock) | |
193 | }; | |
194 | ||
3f378b68 EP |
195 | static int bnep_sock_create(struct net *net, struct socket *sock, int protocol, |
196 | int kern) | |
1da177e4 LT |
197 | { |
198 | struct sock *sk; | |
199 | ||
200 | BT_DBG("sock %p", sock); | |
201 | ||
202 | if (sock->type != SOCK_RAW) | |
203 | return -ESOCKTNOSUPPORT; | |
204 | ||
6257ff21 | 205 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &bnep_proto); |
1da177e4 LT |
206 | if (!sk) |
207 | return -ENOMEM; | |
208 | ||
209 | sock_init_data(sock, sk); | |
210 | ||
211 | sock->ops = &bnep_sock_ops; | |
212 | ||
213 | sock->state = SS_UNCONNECTED; | |
214 | ||
215 | sock_reset_flag(sk, SOCK_ZAPPED); | |
216 | ||
217 | sk->sk_protocol = protocol; | |
218 | sk->sk_state = BT_OPEN; | |
219 | ||
77cf5585 | 220 | bt_sock_link(&bnep_sk_list, sk); |
1da177e4 LT |
221 | return 0; |
222 | } | |
223 | ||
ec1b4cf7 | 224 | static const struct net_proto_family bnep_sock_family_ops = { |
1da177e4 LT |
225 | .family = PF_BLUETOOTH, |
226 | .owner = THIS_MODULE, | |
227 | .create = bnep_sock_create | |
228 | }; | |
229 | ||
230 | int __init bnep_sock_init(void) | |
231 | { | |
232 | int err; | |
233 | ||
234 | err = proto_register(&bnep_proto, 0); | |
235 | if (err < 0) | |
236 | return err; | |
237 | ||
238 | err = bt_sock_register(BTPROTO_BNEP, &bnep_sock_family_ops); | |
77cf5585 MY |
239 | if (err < 0) { |
240 | BT_ERR("Can't register BNEP socket"); | |
1da177e4 | 241 | goto error; |
77cf5585 MY |
242 | } |
243 | ||
b0316615 | 244 | err = bt_procfs_init(&init_net, "bnep", &bnep_sk_list, NULL); |
77cf5585 MY |
245 | if (err < 0) { |
246 | BT_ERR("Failed to create BNEP proc file"); | |
247 | bt_sock_unregister(BTPROTO_BNEP); | |
248 | goto error; | |
249 | } | |
250 | ||
251 | BT_INFO("BNEP socket layer initialized"); | |
1da177e4 LT |
252 | |
253 | return 0; | |
254 | ||
255 | error: | |
1da177e4 LT |
256 | proto_unregister(&bnep_proto); |
257 | return err; | |
258 | } | |
259 | ||
a4e2acf0 | 260 | void __exit bnep_sock_cleanup(void) |
1da177e4 | 261 | { |
77cf5585 | 262 | bt_procfs_cleanup(&init_net, "bnep"); |
5e9d7f86 | 263 | bt_sock_unregister(BTPROTO_BNEP); |
1da177e4 | 264 | proto_unregister(&bnep_proto); |
1da177e4 | 265 | } |