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Commit | Line | Data |
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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 | ||
1da177e4 LT |
27 | #include <linux/module.h> |
28 | ||
29 | #include <linux/types.h> | |
4fc268d2 | 30 | #include <linux/capability.h> |
1da177e4 LT |
31 | #include <linux/errno.h> |
32 | #include <linux/kernel.h> | |
1da177e4 LT |
33 | #include <linux/poll.h> |
34 | #include <linux/fcntl.h> | |
35 | #include <linux/skbuff.h> | |
36 | #include <linux/socket.h> | |
37 | #include <linux/ioctl.h> | |
38 | #include <linux/file.h> | |
39 | #include <linux/init.h> | |
e9c5702e | 40 | #include <linux/compat.h> |
5a0e3ad6 | 41 | #include <linux/gfp.h> |
8c20aa9f | 42 | #include <linux/uaccess.h> |
1da177e4 LT |
43 | #include <net/sock.h> |
44 | ||
1da177e4 LT |
45 | |
46 | #include "bnep.h" | |
47 | ||
1da177e4 LT |
48 | static int bnep_sock_release(struct socket *sock) |
49 | { | |
50 | struct sock *sk = sock->sk; | |
51 | ||
52 | BT_DBG("sock %p sk %p", sock, sk); | |
53 | ||
54 | if (!sk) | |
55 | return 0; | |
56 | ||
57 | sock_orphan(sk); | |
58 | sock_put(sk); | |
59 | return 0; | |
60 | } | |
61 | ||
62 | static int bnep_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
63 | { | |
64 | struct bnep_connlist_req cl; | |
65 | struct bnep_connadd_req ca; | |
66 | struct bnep_conndel_req cd; | |
67 | struct bnep_conninfo ci; | |
68 | struct socket *nsock; | |
69 | void __user *argp = (void __user *)arg; | |
70 | int err; | |
71 | ||
72 | BT_DBG("cmd %x arg %lx", cmd, arg); | |
73 | ||
74 | switch (cmd) { | |
75 | case BNEPCONNADD: | |
76 | if (!capable(CAP_NET_ADMIN)) | |
77 | return -EACCES; | |
78 | ||
79 | if (copy_from_user(&ca, argp, sizeof(ca))) | |
80 | return -EFAULT; | |
8e87d142 | 81 | |
1da177e4 LT |
82 | nsock = sockfd_lookup(ca.sock, &err); |
83 | if (!nsock) | |
84 | return err; | |
85 | ||
86 | if (nsock->sk->sk_state != BT_CONNECTED) { | |
67b23219 | 87 | sockfd_put(nsock); |
1da177e4 LT |
88 | return -EBADFD; |
89 | } | |
43629f8f | 90 | ca.device[sizeof(ca.device)-1] = 0; |
1da177e4 LT |
91 | |
92 | err = bnep_add_connection(&ca, nsock); | |
93 | if (!err) { | |
8e87d142 | 94 | if (copy_to_user(argp, &ca, sizeof(ca))) |
1da177e4 LT |
95 | err = -EFAULT; |
96 | } else | |
67b23219 | 97 | sockfd_put(nsock); |
1da177e4 LT |
98 | |
99 | return err; | |
8e87d142 | 100 | |
1da177e4 LT |
101 | case BNEPCONNDEL: |
102 | if (!capable(CAP_NET_ADMIN)) | |
103 | return -EACCES; | |
104 | ||
105 | if (copy_from_user(&cd, argp, sizeof(cd))) | |
106 | return -EFAULT; | |
8e87d142 | 107 | |
1da177e4 LT |
108 | return bnep_del_connection(&cd); |
109 | ||
110 | case BNEPGETCONNLIST: | |
111 | if (copy_from_user(&cl, argp, sizeof(cl))) | |
112 | return -EFAULT; | |
113 | ||
114 | if (cl.cnum <= 0) | |
115 | return -EINVAL; | |
8e87d142 | 116 | |
1da177e4 LT |
117 | err = bnep_get_connlist(&cl); |
118 | if (!err && copy_to_user(argp, &cl, sizeof(cl))) | |
119 | return -EFAULT; | |
120 | ||
121 | return err; | |
122 | ||
123 | case BNEPGETCONNINFO: | |
124 | if (copy_from_user(&ci, argp, sizeof(ci))) | |
125 | return -EFAULT; | |
126 | ||
127 | err = bnep_get_conninfo(&ci); | |
128 | if (!err && copy_to_user(argp, &ci, sizeof(ci))) | |
129 | return -EFAULT; | |
130 | ||
131 | return err; | |
132 | ||
133 | default: | |
134 | return -EINVAL; | |
135 | } | |
136 | ||
137 | return 0; | |
138 | } | |
139 | ||
e9c5702e MH |
140 | #ifdef CONFIG_COMPAT |
141 | static int bnep_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
142 | { | |
143 | if (cmd == BNEPGETCONNLIST) { | |
144 | struct bnep_connlist_req cl; | |
816a11d5 | 145 | u32 uci; |
e9c5702e MH |
146 | int err; |
147 | ||
816a11d5 | 148 | if (get_user(cl.cnum, (u32 __user *) arg) || |
e9c5702e MH |
149 | get_user(uci, (u32 __user *) (arg + 4))) |
150 | return -EFAULT; | |
151 | ||
152 | cl.ci = compat_ptr(uci); | |
153 | ||
154 | if (cl.cnum <= 0) | |
155 | return -EINVAL; | |
8e87d142 | 156 | |
e9c5702e MH |
157 | err = bnep_get_connlist(&cl); |
158 | ||
816a11d5 | 159 | if (!err && put_user(cl.cnum, (u32 __user *) arg)) |
e9c5702e MH |
160 | err = -EFAULT; |
161 | ||
162 | return err; | |
163 | } | |
164 | ||
165 | return bnep_sock_ioctl(sock, cmd, arg); | |
166 | } | |
167 | #endif | |
168 | ||
90ddc4f0 | 169 | static const struct proto_ops bnep_sock_ops = { |
e9c5702e MH |
170 | .family = PF_BLUETOOTH, |
171 | .owner = THIS_MODULE, | |
172 | .release = bnep_sock_release, | |
173 | .ioctl = bnep_sock_ioctl, | |
174 | #ifdef CONFIG_COMPAT | |
175 | .compat_ioctl = bnep_sock_compat_ioctl, | |
176 | #endif | |
177 | .bind = sock_no_bind, | |
178 | .getname = sock_no_getname, | |
179 | .sendmsg = sock_no_sendmsg, | |
180 | .recvmsg = sock_no_recvmsg, | |
181 | .poll = sock_no_poll, | |
182 | .listen = sock_no_listen, | |
183 | .shutdown = sock_no_shutdown, | |
184 | .setsockopt = sock_no_setsockopt, | |
185 | .getsockopt = sock_no_getsockopt, | |
186 | .connect = sock_no_connect, | |
187 | .socketpair = sock_no_socketpair, | |
188 | .accept = sock_no_accept, | |
189 | .mmap = sock_no_mmap | |
1da177e4 LT |
190 | }; |
191 | ||
192 | static struct proto bnep_proto = { | |
193 | .name = "BNEP", | |
194 | .owner = THIS_MODULE, | |
195 | .obj_size = sizeof(struct bt_sock) | |
196 | }; | |
197 | ||
3f378b68 EP |
198 | static int bnep_sock_create(struct net *net, struct socket *sock, int protocol, |
199 | int kern) | |
1da177e4 LT |
200 | { |
201 | struct sock *sk; | |
202 | ||
203 | BT_DBG("sock %p", sock); | |
204 | ||
205 | if (sock->type != SOCK_RAW) | |
206 | return -ESOCKTNOSUPPORT; | |
207 | ||
6257ff21 | 208 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &bnep_proto); |
1da177e4 LT |
209 | if (!sk) |
210 | return -ENOMEM; | |
211 | ||
212 | sock_init_data(sock, sk); | |
213 | ||
214 | sock->ops = &bnep_sock_ops; | |
215 | ||
216 | sock->state = SS_UNCONNECTED; | |
217 | ||
218 | sock_reset_flag(sk, SOCK_ZAPPED); | |
219 | ||
220 | sk->sk_protocol = protocol; | |
221 | sk->sk_state = BT_OPEN; | |
222 | ||
223 | return 0; | |
224 | } | |
225 | ||
ec1b4cf7 | 226 | static const struct net_proto_family bnep_sock_family_ops = { |
1da177e4 LT |
227 | .family = PF_BLUETOOTH, |
228 | .owner = THIS_MODULE, | |
229 | .create = bnep_sock_create | |
230 | }; | |
231 | ||
232 | int __init bnep_sock_init(void) | |
233 | { | |
234 | int err; | |
235 | ||
236 | err = proto_register(&bnep_proto, 0); | |
237 | if (err < 0) | |
238 | return err; | |
239 | ||
240 | err = bt_sock_register(BTPROTO_BNEP, &bnep_sock_family_ops); | |
241 | if (err < 0) | |
242 | goto error; | |
243 | ||
244 | return 0; | |
245 | ||
246 | error: | |
247 | BT_ERR("Can't register BNEP socket"); | |
248 | proto_unregister(&bnep_proto); | |
249 | return err; | |
250 | } | |
251 | ||
a4e2acf0 | 252 | void __exit bnep_sock_cleanup(void) |
1da177e4 LT |
253 | { |
254 | if (bt_sock_unregister(BTPROTO_BNEP) < 0) | |
255 | BT_ERR("Can't unregister BNEP socket"); | |
256 | ||
257 | proto_unregister(&bnep_proto); | |
1da177e4 | 258 | } |