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Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
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 | |
8e87d142 YH |
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 | |
1da177e4 LT |
16 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
17 | ||
8e87d142 YH |
18 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
19 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
20 | SOFTWARE IS DISCLAIMED. |
21 | */ | |
22 | ||
1da177e4 LT |
23 | #include <linux/module.h> |
24 | ||
25 | #include <linux/types.h> | |
4fc268d2 | 26 | #include <linux/capability.h> |
1da177e4 LT |
27 | #include <linux/errno.h> |
28 | #include <linux/kernel.h> | |
1da177e4 LT |
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> | |
e9c5702e | 35 | #include <linux/compat.h> |
5a0e3ad6 | 36 | #include <linux/gfp.h> |
ffd13320 | 37 | #include <linux/uaccess.h> |
1da177e4 LT |
38 | #include <net/sock.h> |
39 | ||
40 | #include <linux/isdn/capilli.h> | |
41 | ||
1da177e4 LT |
42 | |
43 | #include "cmtp.h" | |
44 | ||
8c8de589 MY |
45 | static struct bt_sock_list cmtp_sk_list = { |
46 | .lock = __RW_LOCK_UNLOCKED(cmtp_sk_list.lock) | |
47 | }; | |
48 | ||
1da177e4 LT |
49 | static 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 | ||
8c8de589 MY |
58 | bt_sock_unlink(&cmtp_sk_list, sk); |
59 | ||
1da177e4 LT |
60 | sock_orphan(sk); |
61 | sock_put(sk); | |
62 | ||
63 | return 0; | |
64 | } | |
65 | ||
66 | static 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 -EACCES; | |
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) { | |
67b23219 | 91 | sockfd_put(nsock); |
1da177e4 LT |
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 | |
67b23219 | 100 | sockfd_put(nsock); |
1da177e4 LT |
101 | |
102 | return err; | |
103 | ||
104 | case CMTPCONNDEL: | |
105 | if (!capable(CAP_NET_ADMIN)) | |
106 | return -EACCES; | |
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 | ||
e9c5702e MH |
140 | #ifdef CONFIG_COMPAT |
141 | static 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; | |
816a11d5 | 145 | u32 uci; |
e9c5702e MH |
146 | int err; |
147 | ||
816a11d5 | 148 | if (get_user(cl.cnum, (u32 __user *) arg) || |
e9c5702e MH |
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; | |
8e87d142 | 156 | |
e9c5702e MH |
157 | err = cmtp_get_connlist(&cl); |
158 | ||
816a11d5 | 159 | if (!err && put_user(cl.cnum, (u32 __user *) arg)) |
e9c5702e MH |
160 | err = -EFAULT; |
161 | ||
162 | return err; | |
163 | } | |
164 | ||
165 | return cmtp_sock_ioctl(sock, cmd, arg); | |
166 | } | |
167 | #endif | |
168 | ||
90ddc4f0 | 169 | static const struct proto_ops cmtp_sock_ops = { |
1da177e4 LT |
170 | .family = PF_BLUETOOTH, |
171 | .owner = THIS_MODULE, | |
172 | .release = cmtp_sock_release, | |
173 | .ioctl = cmtp_sock_ioctl, | |
e9c5702e MH |
174 | #ifdef CONFIG_COMPAT |
175 | .compat_ioctl = cmtp_sock_compat_ioctl, | |
176 | #endif | |
1da177e4 LT |
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 cmtp_proto = { | |
193 | .name = "CMTP", | |
194 | .owner = THIS_MODULE, | |
195 | .obj_size = sizeof(struct bt_sock) | |
196 | }; | |
197 | ||
3f378b68 EP |
198 | static int cmtp_sock_create(struct net *net, struct socket *sock, int protocol, |
199 | int kern) | |
1da177e4 LT |
200 | { |
201 | struct sock *sk; | |
202 | ||
203 | BT_DBG("sock %p", sock); | |
204 | ||
205 | if (sock->type != SOCK_RAW) | |
206 | return -ESOCKTNOSUPPORT; | |
207 | ||
6257ff21 | 208 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &cmtp_proto); |
1da177e4 LT |
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 | ||
8c8de589 MY |
223 | bt_sock_link(&cmtp_sk_list, sk); |
224 | ||
1da177e4 LT |
225 | return 0; |
226 | } | |
227 | ||
ec1b4cf7 | 228 | static const struct net_proto_family cmtp_sock_family_ops = { |
1da177e4 LT |
229 | .family = PF_BLUETOOTH, |
230 | .owner = THIS_MODULE, | |
231 | .create = cmtp_sock_create | |
232 | }; | |
233 | ||
234 | int 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); | |
8c8de589 MY |
243 | if (err < 0) { |
244 | BT_ERR("Can't register CMTP socket"); | |
1da177e4 | 245 | goto error; |
8c8de589 MY |
246 | } |
247 | ||
248 | err = bt_procfs_init(THIS_MODULE, &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"); | |
1da177e4 LT |
256 | |
257 | return 0; | |
258 | ||
259 | error: | |
1da177e4 LT |
260 | proto_unregister(&cmtp_proto); |
261 | return err; | |
262 | } | |
263 | ||
264 | void cmtp_cleanup_sockets(void) | |
265 | { | |
8c8de589 | 266 | bt_procfs_cleanup(&init_net, "cmtp"); |
1da177e4 LT |
267 | if (bt_sock_unregister(BTPROTO_CMTP) < 0) |
268 | BT_ERR("Can't unregister CMTP socket"); | |
269 | ||
270 | proto_unregister(&cmtp_proto); | |
271 | } |