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/slab.h> |
30 | #include <linux/poll.h> | |
31 | #include <linux/fcntl.h> | |
32 | #include <linux/skbuff.h> | |
33 | #include <linux/socket.h> | |
34 | #include <linux/ioctl.h> | |
35 | #include <linux/file.h> | |
e9c5702e | 36 | #include <linux/compat.h> |
1da177e4 LT |
37 | #include <net/sock.h> |
38 | ||
39 | #include <linux/isdn/capilli.h> | |
40 | ||
41 | #include <asm/system.h> | |
42 | #include <asm/uaccess.h> | |
43 | ||
44 | #include "cmtp.h" | |
45 | ||
1da177e4 LT |
46 | static 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 | ||
61 | static 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) { | |
67b23219 | 86 | sockfd_put(nsock); |
1da177e4 LT |
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 | |
67b23219 | 95 | sockfd_put(nsock); |
1da177e4 LT |
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 | ||
e9c5702e MH |
135 | #ifdef CONFIG_COMPAT |
136 | static 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; | |
8e87d142 | 151 | |
e9c5702e MH |
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 | ||
90ddc4f0 | 164 | static const struct proto_ops cmtp_sock_ops = { |
1da177e4 LT |
165 | .family = PF_BLUETOOTH, |
166 | .owner = THIS_MODULE, | |
167 | .release = cmtp_sock_release, | |
168 | .ioctl = cmtp_sock_ioctl, | |
e9c5702e MH |
169 | #ifdef CONFIG_COMPAT |
170 | .compat_ioctl = cmtp_sock_compat_ioctl, | |
171 | #endif | |
1da177e4 LT |
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 | ||
187 | static struct proto cmtp_proto = { | |
188 | .name = "CMTP", | |
189 | .owner = THIS_MODULE, | |
190 | .obj_size = sizeof(struct bt_sock) | |
191 | }; | |
192 | ||
1b8d7ae4 | 193 | static int cmtp_sock_create(struct net *net, struct socket *sock, int protocol) |
1da177e4 LT |
194 | { |
195 | struct sock *sk; | |
196 | ||
197 | BT_DBG("sock %p", sock); | |
198 | ||
199 | if (sock->type != SOCK_RAW) | |
200 | return -ESOCKTNOSUPPORT; | |
201 | ||
6257ff21 | 202 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &cmtp_proto); |
1da177e4 LT |
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 | ||
ec1b4cf7 | 220 | static const struct net_proto_family cmtp_sock_family_ops = { |
1da177e4 LT |
221 | .family = PF_BLUETOOTH, |
222 | .owner = THIS_MODULE, | |
223 | .create = cmtp_sock_create | |
224 | }; | |
225 | ||
226 | int 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 | ||
240 | error: | |
241 | BT_ERR("Can't register CMTP socket"); | |
242 | proto_unregister(&cmtp_proto); | |
243 | return err; | |
244 | } | |
245 | ||
246 | void 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 | } |