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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#include <asm/system.h>
43
44#include "cmtp.h"
45
46static int cmtp_sock_release(struct socket *sock)
47{
48 struct sock *sk = sock->sk;
49
50 BT_DBG("sock %p sk %p", sock, sk);
51
52 if (!sk)
53 return 0;
54
55 sock_orphan(sk);
56 sock_put(sk);
57
58 return 0;
59}
60
61static int cmtp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
62{
63 struct cmtp_connadd_req ca;
64 struct cmtp_conndel_req cd;
65 struct cmtp_connlist_req cl;
66 struct cmtp_conninfo ci;
67 struct socket *nsock;
68 void __user *argp = (void __user *)arg;
69 int err;
70
71 BT_DBG("cmd %x arg %lx", cmd, arg);
72
73 switch (cmd) {
74 case CMTPCONNADD:
75 if (!capable(CAP_NET_ADMIN))
76 return -EACCES;
77
78 if (copy_from_user(&ca, argp, sizeof(ca)))
79 return -EFAULT;
80
81 nsock = sockfd_lookup(ca.sock, &err);
82 if (!nsock)
83 return err;
84
85 if (nsock->sk->sk_state != BT_CONNECTED) {
86 sockfd_put(nsock);
87 return -EBADFD;
88 }
89
90 err = cmtp_add_connection(&ca, nsock);
91 if (!err) {
92 if (copy_to_user(argp, &ca, sizeof(ca)))
93 err = -EFAULT;
94 } else
95 sockfd_put(nsock);
96
97 return err;
98
99 case CMTPCONNDEL:
100 if (!capable(CAP_NET_ADMIN))
101 return -EACCES;
102
103 if (copy_from_user(&cd, argp, sizeof(cd)))
104 return -EFAULT;
105
106 return cmtp_del_connection(&cd);
107
108 case CMTPGETCONNLIST:
109 if (copy_from_user(&cl, argp, sizeof(cl)))
110 return -EFAULT;
111
112 if (cl.cnum <= 0)
113 return -EINVAL;
114
115 err = cmtp_get_connlist(&cl);
116 if (!err && copy_to_user(argp, &cl, sizeof(cl)))
117 return -EFAULT;
118
119 return err;
120
121 case CMTPGETCONNINFO:
122 if (copy_from_user(&ci, argp, sizeof(ci)))
123 return -EFAULT;
124
125 err = cmtp_get_conninfo(&ci);
126 if (!err && copy_to_user(argp, &ci, sizeof(ci)))
127 return -EFAULT;
128
129 return err;
130 }
131
132 return -EINVAL;
133}
134
135#ifdef CONFIG_COMPAT
136static int cmtp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
137{
138 if (cmd == CMTPGETCONNLIST) {
139 struct cmtp_connlist_req cl;
140 uint32_t uci;
141 int err;
142
143 if (get_user(cl.cnum, (uint32_t __user *) arg) ||
144 get_user(uci, (u32 __user *) (arg + 4)))
145 return -EFAULT;
146
147 cl.ci = compat_ptr(uci);
148
149 if (cl.cnum <= 0)
150 return -EINVAL;
151
152 err = cmtp_get_connlist(&cl);
153
154 if (!err && put_user(cl.cnum, (uint32_t __user *) arg))
155 err = -EFAULT;
156
157 return err;
158 }
159
160 return cmtp_sock_ioctl(sock, cmd, arg);
161}
162#endif
163
164static const struct proto_ops cmtp_sock_ops = {
165 .family = PF_BLUETOOTH,
166 .owner = THIS_MODULE,
167 .release = cmtp_sock_release,
168 .ioctl = cmtp_sock_ioctl,
169#ifdef CONFIG_COMPAT
170 .compat_ioctl = cmtp_sock_compat_ioctl,
171#endif
172 .bind = sock_no_bind,
173 .getname = sock_no_getname,
174 .sendmsg = sock_no_sendmsg,
175 .recvmsg = sock_no_recvmsg,
176 .poll = sock_no_poll,
177 .listen = sock_no_listen,
178 .shutdown = sock_no_shutdown,
179 .setsockopt = sock_no_setsockopt,
180 .getsockopt = sock_no_getsockopt,
181 .connect = sock_no_connect,
182 .socketpair = sock_no_socketpair,
183 .accept = sock_no_accept,
184 .mmap = sock_no_mmap
185};
186
187static struct proto cmtp_proto = {
188 .name = "CMTP",
189 .owner = THIS_MODULE,
190 .obj_size = sizeof(struct bt_sock)
191};
192
193static int cmtp_sock_create(struct net *net, struct socket *sock, int protocol,
194 int kern)
195{
196 struct sock *sk;
197
198 BT_DBG("sock %p", sock);
199
200 if (sock->type != SOCK_RAW)
201 return -ESOCKTNOSUPPORT;
202
203 sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &cmtp_proto);
204 if (!sk)
205 return -ENOMEM;
206
207 sock_init_data(sock, sk);
208
209 sock->ops = &cmtp_sock_ops;
210
211 sock->state = SS_UNCONNECTED;
212
213 sock_reset_flag(sk, SOCK_ZAPPED);
214
215 sk->sk_protocol = protocol;
216 sk->sk_state = BT_OPEN;
217
218 return 0;
219}
220
221static const struct net_proto_family cmtp_sock_family_ops = {
222 .family = PF_BLUETOOTH,
223 .owner = THIS_MODULE,
224 .create = cmtp_sock_create
225};
226
227int cmtp_init_sockets(void)
228{
229 int err;
230
231 err = proto_register(&cmtp_proto, 0);
232 if (err < 0)
233 return err;
234
235 err = bt_sock_register(BTPROTO_CMTP, &cmtp_sock_family_ops);
236 if (err < 0)
237 goto error;
238
239 return 0;
240
241error:
242 BT_ERR("Can't register CMTP socket");
243 proto_unregister(&cmtp_proto);
244 return err;
245}
246
247void cmtp_cleanup_sockets(void)
248{
249 if (bt_sock_unregister(BTPROTO_CMTP) < 0)
250 BT_ERR("Can't unregister CMTP socket");
251
252 proto_unregister(&cmtp_proto);
253}