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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 do_cmtp_sock_ioctl(struct socket *sock, unsigned int cmd, void __user *argp)
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 int err;
74
75 BT_DBG("cmd %x arg %p", cmd, argp);
76
77 switch (cmd) {
78 case CMTPCONNADD:
79 if (!capable(CAP_NET_ADMIN))
80 return -EPERM;
81
82 if (copy_from_user(&ca, argp, sizeof(ca)))
83 return -EFAULT;
84
85 nsock = sockfd_lookup(ca.sock, &err);
86 if (!nsock)
87 return err;
88
89 if (nsock->sk->sk_state != BT_CONNECTED) {
90 sockfd_put(nsock);
91 return -EBADFD;
92 }
93
94 err = cmtp_add_connection(&ca, nsock);
95 if (!err) {
96 if (copy_to_user(argp, &ca, sizeof(ca)))
97 err = -EFAULT;
98 } else
99 sockfd_put(nsock);
100
101 return err;
102
103 case CMTPCONNDEL:
104 if (!capable(CAP_NET_ADMIN))
105 return -EPERM;
106
107 if (copy_from_user(&cd, argp, sizeof(cd)))
108 return -EFAULT;
109
110 return cmtp_del_connection(&cd);
111
112 case CMTPGETCONNLIST:
113 if (copy_from_user(&cl, argp, sizeof(cl)))
114 return -EFAULT;
115
116 if (cl.cnum <= 0)
117 return -EINVAL;
118
119 err = cmtp_get_connlist(&cl);
120 if (!err && copy_to_user(argp, &cl, sizeof(cl)))
121 return -EFAULT;
122
123 return err;
124
125 case CMTPGETCONNINFO:
126 if (copy_from_user(&ci, argp, sizeof(ci)))
127 return -EFAULT;
128
129 err = cmtp_get_conninfo(&ci);
130 if (!err && copy_to_user(argp, &ci, sizeof(ci)))
131 return -EFAULT;
132
133 return err;
134 }
135
136 return -EINVAL;
137}
138
139static int cmtp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
140{
141 return do_cmtp_sock_ioctl(sock, cmd, (void __user *)arg);
142}
143
144#ifdef CONFIG_COMPAT
145static int cmtp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
146{
147 void __user *argp = compat_ptr(arg);
148 if (cmd == CMTPGETCONNLIST) {
149 struct cmtp_connlist_req cl;
150 u32 __user *p = argp;
151 u32 uci;
152 int err;
153
154 if (get_user(cl.cnum, p) || get_user(uci, p + 1))
155 return -EFAULT;
156
157 cl.ci = compat_ptr(uci);
158
159 if (cl.cnum <= 0)
160 return -EINVAL;
161
162 err = cmtp_get_connlist(&cl);
163
164 if (!err && put_user(cl.cnum, p))
165 err = -EFAULT;
166
167 return err;
168 }
169
170 return do_cmtp_sock_ioctl(sock, cmd, argp);
171}
172#endif
173
174static const struct proto_ops cmtp_sock_ops = {
175 .family = PF_BLUETOOTH,
176 .owner = THIS_MODULE,
177 .release = cmtp_sock_release,
178 .ioctl = cmtp_sock_ioctl,
179#ifdef CONFIG_COMPAT
180 .compat_ioctl = cmtp_sock_compat_ioctl,
181#endif
182 .bind = sock_no_bind,
183 .getname = sock_no_getname,
184 .sendmsg = sock_no_sendmsg,
185 .recvmsg = sock_no_recvmsg,
186 .listen = sock_no_listen,
187 .shutdown = sock_no_shutdown,
188 .connect = sock_no_connect,
189 .socketpair = sock_no_socketpair,
190 .accept = sock_no_accept,
191 .mmap = sock_no_mmap
192};
193
194static struct proto cmtp_proto = {
195 .name = "CMTP",
196 .owner = THIS_MODULE,
197 .obj_size = sizeof(struct bt_sock)
198};
199
200static int cmtp_sock_create(struct net *net, struct socket *sock, int protocol,
201 int kern)
202{
203 struct sock *sk;
204
205 BT_DBG("sock %p", sock);
206
207 if (sock->type != SOCK_RAW)
208 return -ESOCKTNOSUPPORT;
209
210 sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &cmtp_proto, kern);
211 if (!sk)
212 return -ENOMEM;
213
214 sock_init_data(sock, sk);
215
216 sock->ops = &cmtp_sock_ops;
217
218 sock->state = SS_UNCONNECTED;
219
220 sock_reset_flag(sk, SOCK_ZAPPED);
221
222 sk->sk_protocol = protocol;
223 sk->sk_state = BT_OPEN;
224
225 bt_sock_link(&cmtp_sk_list, sk);
226
227 return 0;
228}
229
230static const struct net_proto_family cmtp_sock_family_ops = {
231 .family = PF_BLUETOOTH,
232 .owner = THIS_MODULE,
233 .create = cmtp_sock_create
234};
235
236int cmtp_init_sockets(void)
237{
238 int err;
239
240 err = proto_register(&cmtp_proto, 0);
241 if (err < 0)
242 return err;
243
244 err = bt_sock_register(BTPROTO_CMTP, &cmtp_sock_family_ops);
245 if (err < 0) {
246 BT_ERR("Can't register CMTP socket");
247 goto error;
248 }
249
250 err = bt_procfs_init(&init_net, "cmtp", &cmtp_sk_list, NULL);
251 if (err < 0) {
252 BT_ERR("Failed to create CMTP proc file");
253 bt_sock_unregister(BTPROTO_HIDP);
254 goto error;
255 }
256
257 BT_INFO("CMTP socket layer initialized");
258
259 return 0;
260
261error:
262 proto_unregister(&cmtp_proto);
263 return err;
264}
265
266void cmtp_cleanup_sockets(void)
267{
268 bt_procfs_cleanup(&init_net, "cmtp");
269 bt_sock_unregister(BTPROTO_CMTP);
270 proto_unregister(&cmtp_proto);
271}
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}