blob: 17800b1d28ea33c4d3b36801cdc1092a2930b88f [file] [log] [blame]
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +09001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 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
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +090017 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070020 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +090022 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
23 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
Linus Torvalds1da177e2005-04-16 15:20:36 -070024 SOFTWARE IS DISCLAIMED.
25*/
26
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include <linux/module.h>
28
29#include <linux/types.h>
Randy Dunlap4fc268d2006-01-11 12:17:47 -080030#include <linux/capability.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include <linux/errno.h>
32#include <linux/kernel.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#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>
Marcel Holtmanne9c57022006-10-15 17:30:22 +020040#include <linux/compat.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090041#include <linux/gfp.h>
Szymon Janc8c20aa92011-03-21 14:19:59 +010042#include <linux/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070043#include <net/sock.h>
44
45#include <asm/system.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070046
47#include "bnep.h"
48
Linus Torvalds1da177e2005-04-16 15:20:36 -070049static int bnep_sock_release(struct socket *sock)
50{
51 struct sock *sk = sock->sk;
52
53 BT_DBG("sock %p sk %p", sock, sk);
54
55 if (!sk)
56 return 0;
57
58 sock_orphan(sk);
59 sock_put(sk);
60 return 0;
61}
62
63static int bnep_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
64{
65 struct bnep_connlist_req cl;
66 struct bnep_connadd_req ca;
67 struct bnep_conndel_req cd;
68 struct bnep_conninfo ci;
69 struct socket *nsock;
70 void __user *argp = (void __user *)arg;
71 int err;
72
73 BT_DBG("cmd %x arg %lx", cmd, arg);
74
75 switch (cmd) {
76 case BNEPCONNADD:
77 if (!capable(CAP_NET_ADMIN))
78 return -EACCES;
79
80 if (copy_from_user(&ca, argp, sizeof(ca)))
81 return -EFAULT;
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +090082
Linus Torvalds1da177e2005-04-16 15:20:36 -070083 nsock = sockfd_lookup(ca.sock, &err);
84 if (!nsock)
85 return err;
86
87 if (nsock->sk->sk_state != BT_CONNECTED) {
Julia Lawall67b23212008-01-07 22:38:42 -080088 sockfd_put(nsock);
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 return -EBADFD;
90 }
Vasiliy Kulikov43629f82011-02-14 13:54:31 +030091 ca.device[sizeof(ca.device)-1] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070092
93 err = bnep_add_connection(&ca, nsock);
94 if (!err) {
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +090095 if (copy_to_user(argp, &ca, sizeof(ca)))
Linus Torvalds1da177e2005-04-16 15:20:36 -070096 err = -EFAULT;
97 } else
Julia Lawall67b23212008-01-07 22:38:42 -080098 sockfd_put(nsock);
Linus Torvalds1da177e2005-04-16 15:20:36 -070099
100 return err;
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +0900101
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102 case BNEPCONNDEL:
103 if (!capable(CAP_NET_ADMIN))
104 return -EACCES;
105
106 if (copy_from_user(&cd, argp, sizeof(cd)))
107 return -EFAULT;
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +0900108
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109 return bnep_del_connection(&cd);
110
111 case BNEPGETCONNLIST:
112 if (copy_from_user(&cl, argp, sizeof(cl)))
113 return -EFAULT;
114
115 if (cl.cnum <= 0)
116 return -EINVAL;
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +0900117
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 err = bnep_get_connlist(&cl);
119 if (!err && copy_to_user(argp, &cl, sizeof(cl)))
120 return -EFAULT;
121
122 return err;
123
124 case BNEPGETCONNINFO:
125 if (copy_from_user(&ci, argp, sizeof(ci)))
126 return -EFAULT;
127
128 err = bnep_get_conninfo(&ci);
129 if (!err && copy_to_user(argp, &ci, sizeof(ci)))
130 return -EFAULT;
131
132 return err;
133
134 default:
135 return -EINVAL;
136 }
137
138 return 0;
139}
140
Marcel Holtmanne9c57022006-10-15 17:30:22 +0200141#ifdef CONFIG_COMPAT
142static int bnep_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
143{
144 if (cmd == BNEPGETCONNLIST) {
145 struct bnep_connlist_req cl;
146 uint32_t uci;
147 int err;
148
149 if (get_user(cl.cnum, (uint32_t __user *) arg) ||
150 get_user(uci, (u32 __user *) (arg + 4)))
151 return -EFAULT;
152
153 cl.ci = compat_ptr(uci);
154
155 if (cl.cnum <= 0)
156 return -EINVAL;
YOSHIFUJI Hideaki8e87d142007-02-09 23:24:33 +0900157
Marcel Holtmanne9c57022006-10-15 17:30:22 +0200158 err = bnep_get_connlist(&cl);
159
160 if (!err && put_user(cl.cnum, (uint32_t __user *) arg))
161 err = -EFAULT;
162
163 return err;
164 }
165
166 return bnep_sock_ioctl(sock, cmd, arg);
167}
168#endif
169
Eric Dumazet90ddc4f2005-12-22 12:49:22 -0800170static const struct proto_ops bnep_sock_ops = {
Marcel Holtmanne9c57022006-10-15 17:30:22 +0200171 .family = PF_BLUETOOTH,
172 .owner = THIS_MODULE,
173 .release = bnep_sock_release,
174 .ioctl = bnep_sock_ioctl,
175#ifdef CONFIG_COMPAT
176 .compat_ioctl = bnep_sock_compat_ioctl,
177#endif
178 .bind = sock_no_bind,
179 .getname = sock_no_getname,
180 .sendmsg = sock_no_sendmsg,
181 .recvmsg = sock_no_recvmsg,
182 .poll = sock_no_poll,
183 .listen = sock_no_listen,
184 .shutdown = sock_no_shutdown,
185 .setsockopt = sock_no_setsockopt,
186 .getsockopt = sock_no_getsockopt,
187 .connect = sock_no_connect,
188 .socketpair = sock_no_socketpair,
189 .accept = sock_no_accept,
190 .mmap = sock_no_mmap
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191};
192
193static struct proto bnep_proto = {
194 .name = "BNEP",
195 .owner = THIS_MODULE,
196 .obj_size = sizeof(struct bt_sock)
197};
198
Eric Paris3f378b62009-11-05 22:18:14 -0800199static int bnep_sock_create(struct net *net, struct socket *sock, int protocol,
200 int kern)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201{
202 struct sock *sk;
203
204 BT_DBG("sock %p", sock);
205
206 if (sock->type != SOCK_RAW)
207 return -ESOCKTNOSUPPORT;
208
Pavel Emelyanov6257ff22007-11-01 00:39:31 -0700209 sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &bnep_proto);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 if (!sk)
211 return -ENOMEM;
212
213 sock_init_data(sock, sk);
214
215 sock->ops = &bnep_sock_ops;
216
217 sock->state = SS_UNCONNECTED;
218
219 sock_reset_flag(sk, SOCK_ZAPPED);
220
221 sk->sk_protocol = protocol;
222 sk->sk_state = BT_OPEN;
223
224 return 0;
225}
226
Stephen Hemmingerec1b4cf2009-10-05 05:58:39 +0000227static const struct net_proto_family bnep_sock_family_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228 .family = PF_BLUETOOTH,
229 .owner = THIS_MODULE,
230 .create = bnep_sock_create
231};
232
233int __init bnep_sock_init(void)
234{
235 int err;
236
237 err = proto_register(&bnep_proto, 0);
238 if (err < 0)
239 return err;
240
241 err = bt_sock_register(BTPROTO_BNEP, &bnep_sock_family_ops);
242 if (err < 0)
243 goto error;
244
245 return 0;
246
247error:
248 BT_ERR("Can't register BNEP socket");
249 proto_unregister(&bnep_proto);
250 return err;
251}
252
Tobias Klausera4e2acf2008-03-05 18:47:40 -0800253void __exit bnep_sock_cleanup(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254{
255 if (bt_sock_unregister(BTPROTO_BNEP) < 0)
256 BT_ERR("Can't unregister BNEP socket");
257
258 proto_unregister(&bnep_proto);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259}