1 /*
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
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
20 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21
22 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
23 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
24 SOFTWARE IS DISCLAIMED.
25 */
26
27 #include <linux/module.h>
28
29 #include <linux/types.h>
30 #include <linux/capability.h>
31 #include <linux/errno.h>
32 #include <linux/kernel.h>
33 #include <linux/slab.h>
34 #include <linux/poll.h>
35 #include <linux/fcntl.h>
36 #include <linux/skbuff.h>
37 #include <linux/socket.h>
38 #include <linux/ioctl.h>
39 #include <linux/file.h>
40 #include <linux/init.h>
41 #include <linux/compat.h>
42 #include <net/sock.h>
43
44 #include <asm/system.h>
45 #include <asm/uaccess.h>
46
47 #include "bnep.h"
48
49 static 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
63 static 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;
82
83 nsock = sockfd_lookup(ca.sock, &err);
84 if (!nsock)
85 return err;
86
87 if (nsock->sk->sk_state != BT_CONNECTED) {
88 sockfd_put(nsock);
89 return -EBADFD;
90 }
91
92 err = bnep_add_connection(&ca, nsock);
93 if (!err) {
94 if (copy_to_user(argp, &ca, sizeof(ca)))
95 err = -EFAULT;
96 } else
97 sockfd_put(nsock);
98
99 return err;
100
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;
107
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;
116
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
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;
145 uint32_t uci;
146 int err;
147
148 if (get_user(cl.cnum, (uint32_t __user *) arg) ||
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;
156
157 err = bnep_get_connlist(&cl);
158
159 if (!err && put_user(cl.cnum, (uint32_t __user *) arg))
160 err = -EFAULT;
161
162 return err;
163 }
164
165 return bnep_sock_ioctl(sock, cmd, arg);
166 }
167 #endif
168
169 static const struct proto_ops bnep_sock_ops = {
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
190 };
191
192 static struct proto bnep_proto = {
193 .name = "BNEP",
194 .owner = THIS_MODULE,
195 .obj_size = sizeof(struct bt_sock)
196 };
197
198 static int bnep_sock_create(struct net *net, struct socket *sock, int protocol)
199 {
200 struct sock *sk;
201
202 BT_DBG("sock %p", sock);
203
204 if (sock->type != SOCK_RAW)
205 return -ESOCKTNOSUPPORT;
206
207 sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &bnep_proto);
208 if (!sk)
209 return -ENOMEM;
210
211 sock_init_data(sock, sk);
212
213 sock->ops = &bnep_sock_ops;
214
215 sock->state = SS_UNCONNECTED;
216
217 sock_reset_flag(sk, SOCK_ZAPPED);
218
219 sk->sk_protocol = protocol;
220 sk->sk_state = BT_OPEN;
221
222 return 0;
223 }
224
225 static struct net_proto_family bnep_sock_family_ops = {
226 .family = PF_BLUETOOTH,
227 .owner = THIS_MODULE,
228 .create = bnep_sock_create
229 };
230
231 int __init bnep_sock_init(void)
232 {
233 int err;
234
235 err = proto_register(&bnep_proto, 0);
236 if (err < 0)
237 return err;
238
239 err = bt_sock_register(BTPROTO_BNEP, &bnep_sock_family_ops);
240 if (err < 0)
241 goto error;
242
243 return 0;
244
245 error:
246 BT_ERR("Can't register BNEP socket");
247 proto_unregister(&bnep_proto);
248 return err;
249 }
250
251 void __exit bnep_sock_cleanup(void)
252 {
253 if (bt_sock_unregister(BTPROTO_BNEP) < 0)
254 BT_ERR("Can't unregister BNEP socket");
255
256 proto_unregister(&bnep_proto);
257 }
258
|
This page was automatically generated by the
LXR engine.
|