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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/export.h>
28#include <linux/file.h>
29
30#include "bnep.h"
31
32static struct bt_sock_list bnep_sk_list = {
33 .lock = __RW_LOCK_UNLOCKED(bnep_sk_list.lock)
34};
35
36static 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
45 bt_sock_unlink(&bnep_sk_list, sk);
46
47 sock_orphan(sk);
48 sock_put(sk);
49 return 0;
50}
51
52static 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;
60 __u32 supp_feat = BIT(BNEP_SETUP_RESPONSE);
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))
68 return -EPERM;
69
70 if (copy_from_user(&ca, argp, sizeof(ca)))
71 return -EFAULT;
72
73 nsock = sockfd_lookup(ca.sock, &err);
74 if (!nsock)
75 return err;
76
77 if (nsock->sk->sk_state != BT_CONNECTED) {
78 sockfd_put(nsock);
79 return -EBADFD;
80 }
81 ca.device[sizeof(ca.device)-1] = 0;
82
83 err = bnep_add_connection(&ca, nsock);
84 if (!err) {
85 if (copy_to_user(argp, &ca, sizeof(ca)))
86 err = -EFAULT;
87 } else
88 sockfd_put(nsock);
89
90 return err;
91
92 case BNEPCONNDEL:
93 if (!capable(CAP_NET_ADMIN))
94 return -EPERM;
95
96 if (copy_from_user(&cd, argp, sizeof(cd)))
97 return -EFAULT;
98
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;
107
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
124 case BNEPGETSUPPFEAT:
125 if (copy_to_user(argp, &supp_feat, sizeof(supp_feat)))
126 return -EFAULT;
127
128 return 0;
129
130 default:
131 return -EINVAL;
132 }
133
134 return 0;
135}
136
137#ifdef CONFIG_COMPAT
138static 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;
142 u32 uci;
143 int err;
144
145 if (get_user(cl.cnum, (u32 __user *) arg) ||
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;
153
154 err = bnep_get_connlist(&cl);
155
156 if (!err && put_user(cl.cnum, (u32 __user *) arg))
157 err = -EFAULT;
158
159 return err;
160 }
161
162 return bnep_sock_ioctl(sock, cmd, arg);
163}
164#endif
165
166static const struct proto_ops bnep_sock_ops = {
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
187};
188
189static struct proto bnep_proto = {
190 .name = "BNEP",
191 .owner = THIS_MODULE,
192 .obj_size = sizeof(struct bt_sock)
193};
194
195static int bnep_sock_create(struct net *net, struct socket *sock, int protocol,
196 int kern)
197{
198 struct sock *sk;
199
200 BT_DBG("sock %p", sock);
201
202 if (sock->type != SOCK_RAW)
203 return -ESOCKTNOSUPPORT;
204
205 sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &bnep_proto, kern);
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
220 bt_sock_link(&bnep_sk_list, sk);
221 return 0;
222}
223
224static const struct net_proto_family bnep_sock_family_ops = {
225 .family = PF_BLUETOOTH,
226 .owner = THIS_MODULE,
227 .create = bnep_sock_create
228};
229
230int __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);
239 if (err < 0) {
240 BT_ERR("Can't register BNEP socket");
241 goto error;
242 }
243
244 err = bt_procfs_init(&init_net, "bnep", &bnep_sk_list, NULL);
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");
252
253 return 0;
254
255error:
256 proto_unregister(&bnep_proto);
257 return err;
258}
259
260void __exit bnep_sock_cleanup(void)
261{
262 bt_procfs_cleanup(&init_net, "bnep");
263 bt_sock_unregister(BTPROTO_BNEP);
264 proto_unregister(&bnep_proto);
265}
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/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>
40#include <linux/compat.h>
41#include <linux/gfp.h>
42#include <linux/uaccess.h>
43#include <net/sock.h>
44
45#include <asm/system.h>
46
47#include "bnep.h"
48
49static 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;
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 ca.device[sizeof(ca.device)-1] = 0;
92
93 err = bnep_add_connection(&ca, nsock);
94 if (!err) {
95 if (copy_to_user(argp, &ca, sizeof(ca)))
96 err = -EFAULT;
97 } else
98 sockfd_put(nsock);
99
100 return err;
101
102 case BNEPCONNDEL:
103 if (!capable(CAP_NET_ADMIN))
104 return -EACCES;
105
106 if (copy_from_user(&cd, argp, sizeof(cd)))
107 return -EFAULT;
108
109 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;
117
118 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
141#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;
157
158 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
170static const struct proto_ops bnep_sock_ops = {
171 .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
191};
192
193static struct proto bnep_proto = {
194 .name = "BNEP",
195 .owner = THIS_MODULE,
196 .obj_size = sizeof(struct bt_sock)
197};
198
199static int bnep_sock_create(struct net *net, struct socket *sock, int protocol,
200 int kern)
201{
202 struct sock *sk;
203
204 BT_DBG("sock %p", sock);
205
206 if (sock->type != SOCK_RAW)
207 return -ESOCKTNOSUPPORT;
208
209 sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &bnep_proto);
210 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
227static const struct net_proto_family bnep_sock_family_ops = {
228 .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
253void __exit bnep_sock_cleanup(void)
254{
255 if (bt_sock_unregister(BTPROTO_BNEP) < 0)
256 BT_ERR("Can't unregister BNEP socket");
257
258 proto_unregister(&bnep_proto);
259}