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Commit | Line | Data |
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1da177e4 LT |
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 | ||
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/sched.h> |
30 | #include <linux/slab.h> | |
31 | #include <linux/poll.h> | |
32 | #include <linux/fcntl.h> | |
33 | #include <linux/skbuff.h> | |
34 | #include <linux/socket.h> | |
35 | #include <linux/ioctl.h> | |
36 | #include <linux/file.h> | |
e9c5702e | 37 | #include <linux/compat.h> |
1da177e4 LT |
38 | #include <net/sock.h> |
39 | ||
40 | #include <linux/isdn/capilli.h> | |
41 | ||
42 | #include <asm/system.h> | |
43 | #include <asm/uaccess.h> | |
44 | ||
45 | #include "cmtp.h" | |
46 | ||
47 | #ifndef CONFIG_BT_CMTP_DEBUG | |
48 | #undef BT_DBG | |
49 | #define BT_DBG(D...) | |
50 | #endif | |
51 | ||
52 | static int cmtp_sock_release(struct socket *sock) | |
53 | { | |
54 | struct sock *sk = sock->sk; | |
55 | ||
56 | BT_DBG("sock %p sk %p", sock, sk); | |
57 | ||
58 | if (!sk) | |
59 | return 0; | |
60 | ||
61 | sock_orphan(sk); | |
62 | sock_put(sk); | |
63 | ||
64 | return 0; | |
65 | } | |
66 | ||
67 | static int cmtp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
68 | { | |
69 | struct cmtp_connadd_req ca; | |
70 | struct cmtp_conndel_req cd; | |
71 | struct cmtp_connlist_req cl; | |
72 | struct cmtp_conninfo ci; | |
73 | struct socket *nsock; | |
74 | void __user *argp = (void __user *)arg; | |
75 | int err; | |
76 | ||
77 | BT_DBG("cmd %x arg %lx", cmd, arg); | |
78 | ||
79 | switch (cmd) { | |
80 | case CMTPCONNADD: | |
81 | if (!capable(CAP_NET_ADMIN)) | |
82 | return -EACCES; | |
83 | ||
84 | if (copy_from_user(&ca, argp, sizeof(ca))) | |
85 | return -EFAULT; | |
86 | ||
87 | nsock = sockfd_lookup(ca.sock, &err); | |
88 | if (!nsock) | |
89 | return err; | |
90 | ||
91 | if (nsock->sk->sk_state != BT_CONNECTED) { | |
92 | fput(nsock->file); | |
93 | return -EBADFD; | |
94 | } | |
95 | ||
96 | err = cmtp_add_connection(&ca, nsock); | |
97 | if (!err) { | |
98 | if (copy_to_user(argp, &ca, sizeof(ca))) | |
99 | err = -EFAULT; | |
100 | } else | |
101 | fput(nsock->file); | |
102 | ||
103 | return err; | |
104 | ||
105 | case CMTPCONNDEL: | |
106 | if (!capable(CAP_NET_ADMIN)) | |
107 | return -EACCES; | |
108 | ||
109 | if (copy_from_user(&cd, argp, sizeof(cd))) | |
110 | return -EFAULT; | |
111 | ||
112 | return cmtp_del_connection(&cd); | |
113 | ||
114 | case CMTPGETCONNLIST: | |
115 | if (copy_from_user(&cl, argp, sizeof(cl))) | |
116 | return -EFAULT; | |
117 | ||
118 | if (cl.cnum <= 0) | |
119 | return -EINVAL; | |
120 | ||
121 | err = cmtp_get_connlist(&cl); | |
122 | if (!err && copy_to_user(argp, &cl, sizeof(cl))) | |
123 | return -EFAULT; | |
124 | ||
125 | return err; | |
126 | ||
127 | case CMTPGETCONNINFO: | |
128 | if (copy_from_user(&ci, argp, sizeof(ci))) | |
129 | return -EFAULT; | |
130 | ||
131 | err = cmtp_get_conninfo(&ci); | |
132 | if (!err && copy_to_user(argp, &ci, sizeof(ci))) | |
133 | return -EFAULT; | |
134 | ||
135 | return err; | |
136 | } | |
137 | ||
138 | return -EINVAL; | |
139 | } | |
140 | ||
e9c5702e MH |
141 | #ifdef CONFIG_COMPAT |
142 | static int cmtp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
143 | { | |
144 | if (cmd == CMTPGETCONNLIST) { | |
145 | struct cmtp_connlist_req cl; | |
146 | uint32_t uci; | |
147 | int err; | |
148 | ||
149 | if (get_user(cl.cnum, (uint32_t __user *) arg) || | |
150 | get_user(uci, (u32 __user *) (arg + 4))) | |
151 | return -EFAULT; | |
152 | ||
153 | cl.ci = compat_ptr(uci); | |
154 | ||
155 | if (cl.cnum <= 0) | |
156 | return -EINVAL; | |
157 | ||
158 | err = cmtp_get_connlist(&cl); | |
159 | ||
160 | if (!err && put_user(cl.cnum, (uint32_t __user *) arg)) | |
161 | err = -EFAULT; | |
162 | ||
163 | return err; | |
164 | } | |
165 | ||
166 | return cmtp_sock_ioctl(sock, cmd, arg); | |
167 | } | |
168 | #endif | |
169 | ||
90ddc4f0 | 170 | static const struct proto_ops cmtp_sock_ops = { |
1da177e4 LT |
171 | .family = PF_BLUETOOTH, |
172 | .owner = THIS_MODULE, | |
173 | .release = cmtp_sock_release, | |
174 | .ioctl = cmtp_sock_ioctl, | |
e9c5702e MH |
175 | #ifdef CONFIG_COMPAT |
176 | .compat_ioctl = cmtp_sock_compat_ioctl, | |
177 | #endif | |
1da177e4 LT |
178 | .bind = sock_no_bind, |
179 | .getname = sock_no_getname, | |
180 | .sendmsg = sock_no_sendmsg, | |
181 | .recvmsg = sock_no_recvmsg, | |
182 | .poll = sock_no_poll, | |
183 | .listen = sock_no_listen, | |
184 | .shutdown = sock_no_shutdown, | |
185 | .setsockopt = sock_no_setsockopt, | |
186 | .getsockopt = sock_no_getsockopt, | |
187 | .connect = sock_no_connect, | |
188 | .socketpair = sock_no_socketpair, | |
189 | .accept = sock_no_accept, | |
190 | .mmap = sock_no_mmap | |
191 | }; | |
192 | ||
193 | static struct proto cmtp_proto = { | |
194 | .name = "CMTP", | |
195 | .owner = THIS_MODULE, | |
196 | .obj_size = sizeof(struct bt_sock) | |
197 | }; | |
198 | ||
199 | static int cmtp_sock_create(struct socket *sock, int protocol) | |
200 | { | |
201 | struct sock *sk; | |
202 | ||
203 | BT_DBG("sock %p", sock); | |
204 | ||
205 | if (sock->type != SOCK_RAW) | |
206 | return -ESOCKTNOSUPPORT; | |
207 | ||
74da626a | 208 | sk = sk_alloc(PF_BLUETOOTH, GFP_ATOMIC, &cmtp_proto, 1); |
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 | ||
223 | return 0; | |
224 | } | |
225 | ||
226 | static struct net_proto_family cmtp_sock_family_ops = { | |
227 | .family = PF_BLUETOOTH, | |
228 | .owner = THIS_MODULE, | |
229 | .create = cmtp_sock_create | |
230 | }; | |
231 | ||
232 | int cmtp_init_sockets(void) | |
233 | { | |
234 | int err; | |
235 | ||
236 | err = proto_register(&cmtp_proto, 0); | |
237 | if (err < 0) | |
238 | return err; | |
239 | ||
240 | err = bt_sock_register(BTPROTO_CMTP, &cmtp_sock_family_ops); | |
241 | if (err < 0) | |
242 | goto error; | |
243 | ||
244 | return 0; | |
245 | ||
246 | error: | |
247 | BT_ERR("Can't register CMTP socket"); | |
248 | proto_unregister(&cmtp_proto); | |
249 | return err; | |
250 | } | |
251 | ||
252 | void cmtp_cleanup_sockets(void) | |
253 | { | |
254 | if (bt_sock_unregister(BTPROTO_CMTP) < 0) | |
255 | BT_ERR("Can't unregister CMTP socket"); | |
256 | ||
257 | proto_unregister(&cmtp_proto); | |
258 | } |