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1/*
2 CMTP implementation for Linux Bluetooth stack (BlueZ).
3 Copyright (C) 2002-2003 Marcel Holtmann <marcel@holtmann.org>
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License version 2 as
7 published by the Free Software Foundation;
8
9 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
10 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
11 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
12 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
13 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
14 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17
18 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
19 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
20 SOFTWARE IS DISCLAIMED.
21*/
22
23#include <linux/export.h>
24
25#include <linux/types.h>
26#include <linux/capability.h>
27#include <linux/errno.h>
28#include <linux/kernel.h>
29#include <linux/poll.h>
30#include <linux/fcntl.h>
31#include <linux/skbuff.h>
32#include <linux/socket.h>
33#include <linux/ioctl.h>
34#include <linux/file.h>
35#include <linux/compat.h>
36#include <linux/gfp.h>
37#include <linux/uaccess.h>
38#include <net/sock.h>
39
40#include <linux/isdn/capilli.h>
41
42
43#include "cmtp.h"
44
45static struct bt_sock_list cmtp_sk_list = {
46 .lock = __RW_LOCK_UNLOCKED(cmtp_sk_list.lock)
47};
48
49static int cmtp_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 bt_sock_unlink(&cmtp_sk_list, sk);
59
60 sock_orphan(sk);
61 sock_put(sk);
62
63 return 0;
64}
65
66static int cmtp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
67{
68 struct cmtp_connadd_req ca;
69 struct cmtp_conndel_req cd;
70 struct cmtp_connlist_req cl;
71 struct cmtp_conninfo ci;
72 struct socket *nsock;
73 void __user *argp = (void __user *)arg;
74 int err;
75
76 BT_DBG("cmd %x arg %lx", cmd, arg);
77
78 switch (cmd) {
79 case CMTPCONNADD:
80 if (!capable(CAP_NET_ADMIN))
81 return -EPERM;
82
83 if (copy_from_user(&ca, argp, sizeof(ca)))
84 return -EFAULT;
85
86 nsock = sockfd_lookup(ca.sock, &err);
87 if (!nsock)
88 return err;
89
90 if (nsock->sk->sk_state != BT_CONNECTED) {
91 sockfd_put(nsock);
92 return -EBADFD;
93 }
94
95 err = cmtp_add_connection(&ca, nsock);
96 if (!err) {
97 if (copy_to_user(argp, &ca, sizeof(ca)))
98 err = -EFAULT;
99 } else
100 sockfd_put(nsock);
101
102 return err;
103
104 case CMTPCONNDEL:
105 if (!capable(CAP_NET_ADMIN))
106 return -EPERM;
107
108 if (copy_from_user(&cd, argp, sizeof(cd)))
109 return -EFAULT;
110
111 return cmtp_del_connection(&cd);
112
113 case CMTPGETCONNLIST:
114 if (copy_from_user(&cl, argp, sizeof(cl)))
115 return -EFAULT;
116
117 if (cl.cnum <= 0)
118 return -EINVAL;
119
120 err = cmtp_get_connlist(&cl);
121 if (!err && copy_to_user(argp, &cl, sizeof(cl)))
122 return -EFAULT;
123
124 return err;
125
126 case CMTPGETCONNINFO:
127 if (copy_from_user(&ci, argp, sizeof(ci)))
128 return -EFAULT;
129
130 err = cmtp_get_conninfo(&ci);
131 if (!err && copy_to_user(argp, &ci, sizeof(ci)))
132 return -EFAULT;
133
134 return err;
135 }
136
137 return -EINVAL;
138}
139
140#ifdef CONFIG_COMPAT
141static int cmtp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
142{
143 if (cmd == CMTPGETCONNLIST) {
144 struct cmtp_connlist_req cl;
145 u32 uci;
146 int err;
147
148 if (get_user(cl.cnum, (u32 __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 = cmtp_get_connlist(&cl);
158
159 if (!err && put_user(cl.cnum, (u32 __user *) arg))
160 err = -EFAULT;
161
162 return err;
163 }
164
165 return cmtp_sock_ioctl(sock, cmd, arg);
166}
167#endif
168
169static const struct proto_ops cmtp_sock_ops = {
170 .family = PF_BLUETOOTH,
171 .owner = THIS_MODULE,
172 .release = cmtp_sock_release,
173 .ioctl = cmtp_sock_ioctl,
174#ifdef CONFIG_COMPAT
175 .compat_ioctl = cmtp_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
192static struct proto cmtp_proto = {
193 .name = "CMTP",
194 .owner = THIS_MODULE,
195 .obj_size = sizeof(struct bt_sock)
196};
197
198static int cmtp_sock_create(struct net *net, struct socket *sock, int protocol,
199 int kern)
200{
201 struct sock *sk;
202
203 BT_DBG("sock %p", sock);
204
205 if (sock->type != SOCK_RAW)
206 return -ESOCKTNOSUPPORT;
207
208 sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &cmtp_proto, kern);
209 if (!sk)
210 return -ENOMEM;
211
212 sock_init_data(sock, sk);
213
214 sock->ops = &cmtp_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 bt_sock_link(&cmtp_sk_list, sk);
224
225 return 0;
226}
227
228static const struct net_proto_family cmtp_sock_family_ops = {
229 .family = PF_BLUETOOTH,
230 .owner = THIS_MODULE,
231 .create = cmtp_sock_create
232};
233
234int cmtp_init_sockets(void)
235{
236 int err;
237
238 err = proto_register(&cmtp_proto, 0);
239 if (err < 0)
240 return err;
241
242 err = bt_sock_register(BTPROTO_CMTP, &cmtp_sock_family_ops);
243 if (err < 0) {
244 BT_ERR("Can't register CMTP socket");
245 goto error;
246 }
247
248 err = bt_procfs_init(&init_net, "cmtp", &cmtp_sk_list, NULL);
249 if (err < 0) {
250 BT_ERR("Failed to create CMTP proc file");
251 bt_sock_unregister(BTPROTO_HIDP);
252 goto error;
253 }
254
255 BT_INFO("CMTP socket layer initialized");
256
257 return 0;
258
259error:
260 proto_unregister(&cmtp_proto);
261 return err;
262}
263
264void cmtp_cleanup_sockets(void)
265{
266 bt_procfs_cleanup(&init_net, "cmtp");
267 bt_sock_unregister(BTPROTO_CMTP);
268 proto_unregister(&cmtp_proto);
269}
1/*
2 CMTP implementation for Linux Bluetooth stack (BlueZ).
3 Copyright (C) 2002-2003 Marcel Holtmann <marcel@holtmann.org>
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License version 2 as
7 published by the Free Software Foundation;
8
9 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
10 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
11 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
12 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
13 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
14 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17
18 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
19 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
20 SOFTWARE IS DISCLAIMED.
21*/
22
23#include <linux/module.h>
24
25#include <linux/types.h>
26#include <linux/capability.h>
27#include <linux/errno.h>
28#include <linux/kernel.h>
29#include <linux/poll.h>
30#include <linux/fcntl.h>
31#include <linux/skbuff.h>
32#include <linux/socket.h>
33#include <linux/ioctl.h>
34#include <linux/file.h>
35#include <linux/compat.h>
36#include <linux/gfp.h>
37#include <linux/uaccess.h>
38#include <net/sock.h>
39
40#include <linux/isdn/capilli.h>
41
42
43#include "cmtp.h"
44
45static int cmtp_sock_release(struct socket *sock)
46{
47 struct sock *sk = sock->sk;
48
49 BT_DBG("sock %p sk %p", sock, sk);
50
51 if (!sk)
52 return 0;
53
54 sock_orphan(sk);
55 sock_put(sk);
56
57 return 0;
58}
59
60static int cmtp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
61{
62 struct cmtp_connadd_req ca;
63 struct cmtp_conndel_req cd;
64 struct cmtp_connlist_req cl;
65 struct cmtp_conninfo ci;
66 struct socket *nsock;
67 void __user *argp = (void __user *)arg;
68 int err;
69
70 BT_DBG("cmd %x arg %lx", cmd, arg);
71
72 switch (cmd) {
73 case CMTPCONNADD:
74 if (!capable(CAP_NET_ADMIN))
75 return -EACCES;
76
77 if (copy_from_user(&ca, argp, sizeof(ca)))
78 return -EFAULT;
79
80 nsock = sockfd_lookup(ca.sock, &err);
81 if (!nsock)
82 return err;
83
84 if (nsock->sk->sk_state != BT_CONNECTED) {
85 sockfd_put(nsock);
86 return -EBADFD;
87 }
88
89 err = cmtp_add_connection(&ca, nsock);
90 if (!err) {
91 if (copy_to_user(argp, &ca, sizeof(ca)))
92 err = -EFAULT;
93 } else
94 sockfd_put(nsock);
95
96 return err;
97
98 case CMTPCONNDEL:
99 if (!capable(CAP_NET_ADMIN))
100 return -EACCES;
101
102 if (copy_from_user(&cd, argp, sizeof(cd)))
103 return -EFAULT;
104
105 return cmtp_del_connection(&cd);
106
107 case CMTPGETCONNLIST:
108 if (copy_from_user(&cl, argp, sizeof(cl)))
109 return -EFAULT;
110
111 if (cl.cnum <= 0)
112 return -EINVAL;
113
114 err = cmtp_get_connlist(&cl);
115 if (!err && copy_to_user(argp, &cl, sizeof(cl)))
116 return -EFAULT;
117
118 return err;
119
120 case CMTPGETCONNINFO:
121 if (copy_from_user(&ci, argp, sizeof(ci)))
122 return -EFAULT;
123
124 err = cmtp_get_conninfo(&ci);
125 if (!err && copy_to_user(argp, &ci, sizeof(ci)))
126 return -EFAULT;
127
128 return err;
129 }
130
131 return -EINVAL;
132}
133
134#ifdef CONFIG_COMPAT
135static int cmtp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
136{
137 if (cmd == CMTPGETCONNLIST) {
138 struct cmtp_connlist_req cl;
139 u32 uci;
140 int err;
141
142 if (get_user(cl.cnum, (u32 __user *) arg) ||
143 get_user(uci, (u32 __user *) (arg + 4)))
144 return -EFAULT;
145
146 cl.ci = compat_ptr(uci);
147
148 if (cl.cnum <= 0)
149 return -EINVAL;
150
151 err = cmtp_get_connlist(&cl);
152
153 if (!err && put_user(cl.cnum, (u32 __user *) arg))
154 err = -EFAULT;
155
156 return err;
157 }
158
159 return cmtp_sock_ioctl(sock, cmd, arg);
160}
161#endif
162
163static const struct proto_ops cmtp_sock_ops = {
164 .family = PF_BLUETOOTH,
165 .owner = THIS_MODULE,
166 .release = cmtp_sock_release,
167 .ioctl = cmtp_sock_ioctl,
168#ifdef CONFIG_COMPAT
169 .compat_ioctl = cmtp_sock_compat_ioctl,
170#endif
171 .bind = sock_no_bind,
172 .getname = sock_no_getname,
173 .sendmsg = sock_no_sendmsg,
174 .recvmsg = sock_no_recvmsg,
175 .poll = sock_no_poll,
176 .listen = sock_no_listen,
177 .shutdown = sock_no_shutdown,
178 .setsockopt = sock_no_setsockopt,
179 .getsockopt = sock_no_getsockopt,
180 .connect = sock_no_connect,
181 .socketpair = sock_no_socketpair,
182 .accept = sock_no_accept,
183 .mmap = sock_no_mmap
184};
185
186static struct proto cmtp_proto = {
187 .name = "CMTP",
188 .owner = THIS_MODULE,
189 .obj_size = sizeof(struct bt_sock)
190};
191
192static int cmtp_sock_create(struct net *net, struct socket *sock, int protocol,
193 int kern)
194{
195 struct sock *sk;
196
197 BT_DBG("sock %p", sock);
198
199 if (sock->type != SOCK_RAW)
200 return -ESOCKTNOSUPPORT;
201
202 sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &cmtp_proto);
203 if (!sk)
204 return -ENOMEM;
205
206 sock_init_data(sock, sk);
207
208 sock->ops = &cmtp_sock_ops;
209
210 sock->state = SS_UNCONNECTED;
211
212 sock_reset_flag(sk, SOCK_ZAPPED);
213
214 sk->sk_protocol = protocol;
215 sk->sk_state = BT_OPEN;
216
217 return 0;
218}
219
220static const struct net_proto_family cmtp_sock_family_ops = {
221 .family = PF_BLUETOOTH,
222 .owner = THIS_MODULE,
223 .create = cmtp_sock_create
224};
225
226int cmtp_init_sockets(void)
227{
228 int err;
229
230 err = proto_register(&cmtp_proto, 0);
231 if (err < 0)
232 return err;
233
234 err = bt_sock_register(BTPROTO_CMTP, &cmtp_sock_family_ops);
235 if (err < 0)
236 goto error;
237
238 return 0;
239
240error:
241 BT_ERR("Can't register CMTP socket");
242 proto_unregister(&cmtp_proto);
243 return err;
244}
245
246void cmtp_cleanup_sockets(void)
247{
248 if (bt_sock_unregister(BTPROTO_CMTP) < 0)
249 BT_ERR("Can't unregister CMTP socket");
250
251 proto_unregister(&cmtp_proto);
252}