Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BNEP implementation for Linux Bluetooth stack (BlueZ). |
3 | Copyright (C) 2001-2002 Inventel Systemes | |
4 | Written 2001-2002 by | |
5 | David Libault <david.libault@inventel.fr> | |
6 | ||
7 | Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com> | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License version 2 as | |
11 | published by the Free Software Foundation; | |
12 | ||
13 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
14 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
15 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
16 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
17 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
18 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
19 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
20 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
21 | ||
8e87d142 YH |
22 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
23 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
24 | SOFTWARE IS DISCLAIMED. |
25 | */ | |
26 | ||
27 | /* | |
28 | * $Id: sock.c,v 1.4 2002/08/04 21:23:58 maxk Exp $ | |
8e87d142 | 29 | */ |
1da177e4 | 30 | |
1da177e4 LT |
31 | #include <linux/module.h> |
32 | ||
33 | #include <linux/types.h> | |
4fc268d2 | 34 | #include <linux/capability.h> |
1da177e4 LT |
35 | #include <linux/errno.h> |
36 | #include <linux/kernel.h> | |
1da177e4 LT |
37 | #include <linux/slab.h> |
38 | #include <linux/poll.h> | |
39 | #include <linux/fcntl.h> | |
40 | #include <linux/skbuff.h> | |
41 | #include <linux/socket.h> | |
42 | #include <linux/ioctl.h> | |
43 | #include <linux/file.h> | |
44 | #include <linux/init.h> | |
e9c5702e | 45 | #include <linux/compat.h> |
1da177e4 LT |
46 | #include <net/sock.h> |
47 | ||
48 | #include <asm/system.h> | |
49 | #include <asm/uaccess.h> | |
50 | ||
51 | #include "bnep.h" | |
52 | ||
53 | #ifndef CONFIG_BT_BNEP_DEBUG | |
54 | #undef BT_DBG | |
55 | #define BT_DBG( A... ) | |
56 | #endif | |
57 | ||
58 | static int bnep_sock_release(struct socket *sock) | |
59 | { | |
60 | struct sock *sk = sock->sk; | |
61 | ||
62 | BT_DBG("sock %p sk %p", sock, sk); | |
63 | ||
64 | if (!sk) | |
65 | return 0; | |
66 | ||
67 | sock_orphan(sk); | |
68 | sock_put(sk); | |
69 | return 0; | |
70 | } | |
71 | ||
72 | static int bnep_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
73 | { | |
74 | struct bnep_connlist_req cl; | |
75 | struct bnep_connadd_req ca; | |
76 | struct bnep_conndel_req cd; | |
77 | struct bnep_conninfo ci; | |
78 | struct socket *nsock; | |
79 | void __user *argp = (void __user *)arg; | |
80 | int err; | |
81 | ||
82 | BT_DBG("cmd %x arg %lx", cmd, arg); | |
83 | ||
84 | switch (cmd) { | |
85 | case BNEPCONNADD: | |
86 | if (!capable(CAP_NET_ADMIN)) | |
87 | return -EACCES; | |
88 | ||
89 | if (copy_from_user(&ca, argp, sizeof(ca))) | |
90 | return -EFAULT; | |
8e87d142 | 91 | |
1da177e4 LT |
92 | nsock = sockfd_lookup(ca.sock, &err); |
93 | if (!nsock) | |
94 | return err; | |
95 | ||
96 | if (nsock->sk->sk_state != BT_CONNECTED) { | |
97 | fput(nsock->file); | |
98 | return -EBADFD; | |
99 | } | |
100 | ||
101 | err = bnep_add_connection(&ca, nsock); | |
102 | if (!err) { | |
8e87d142 | 103 | if (copy_to_user(argp, &ca, sizeof(ca))) |
1da177e4 LT |
104 | err = -EFAULT; |
105 | } else | |
106 | fput(nsock->file); | |
107 | ||
108 | return err; | |
8e87d142 | 109 | |
1da177e4 LT |
110 | case BNEPCONNDEL: |
111 | if (!capable(CAP_NET_ADMIN)) | |
112 | return -EACCES; | |
113 | ||
114 | if (copy_from_user(&cd, argp, sizeof(cd))) | |
115 | return -EFAULT; | |
8e87d142 | 116 | |
1da177e4 LT |
117 | return bnep_del_connection(&cd); |
118 | ||
119 | case BNEPGETCONNLIST: | |
120 | if (copy_from_user(&cl, argp, sizeof(cl))) | |
121 | return -EFAULT; | |
122 | ||
123 | if (cl.cnum <= 0) | |
124 | return -EINVAL; | |
8e87d142 | 125 | |
1da177e4 LT |
126 | err = bnep_get_connlist(&cl); |
127 | if (!err && copy_to_user(argp, &cl, sizeof(cl))) | |
128 | return -EFAULT; | |
129 | ||
130 | return err; | |
131 | ||
132 | case BNEPGETCONNINFO: | |
133 | if (copy_from_user(&ci, argp, sizeof(ci))) | |
134 | return -EFAULT; | |
135 | ||
136 | err = bnep_get_conninfo(&ci); | |
137 | if (!err && copy_to_user(argp, &ci, sizeof(ci))) | |
138 | return -EFAULT; | |
139 | ||
140 | return err; | |
141 | ||
142 | default: | |
143 | return -EINVAL; | |
144 | } | |
145 | ||
146 | return 0; | |
147 | } | |
148 | ||
e9c5702e MH |
149 | #ifdef CONFIG_COMPAT |
150 | static int bnep_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
151 | { | |
152 | if (cmd == BNEPGETCONNLIST) { | |
153 | struct bnep_connlist_req cl; | |
154 | uint32_t uci; | |
155 | int err; | |
156 | ||
157 | if (get_user(cl.cnum, (uint32_t __user *) arg) || | |
158 | get_user(uci, (u32 __user *) (arg + 4))) | |
159 | return -EFAULT; | |
160 | ||
161 | cl.ci = compat_ptr(uci); | |
162 | ||
163 | if (cl.cnum <= 0) | |
164 | return -EINVAL; | |
8e87d142 | 165 | |
e9c5702e MH |
166 | err = bnep_get_connlist(&cl); |
167 | ||
168 | if (!err && put_user(cl.cnum, (uint32_t __user *) arg)) | |
169 | err = -EFAULT; | |
170 | ||
171 | return err; | |
172 | } | |
173 | ||
174 | return bnep_sock_ioctl(sock, cmd, arg); | |
175 | } | |
176 | #endif | |
177 | ||
90ddc4f0 | 178 | static const struct proto_ops bnep_sock_ops = { |
e9c5702e MH |
179 | .family = PF_BLUETOOTH, |
180 | .owner = THIS_MODULE, | |
181 | .release = bnep_sock_release, | |
182 | .ioctl = bnep_sock_ioctl, | |
183 | #ifdef CONFIG_COMPAT | |
184 | .compat_ioctl = bnep_sock_compat_ioctl, | |
185 | #endif | |
186 | .bind = sock_no_bind, | |
187 | .getname = sock_no_getname, | |
188 | .sendmsg = sock_no_sendmsg, | |
189 | .recvmsg = sock_no_recvmsg, | |
190 | .poll = sock_no_poll, | |
191 | .listen = sock_no_listen, | |
192 | .shutdown = sock_no_shutdown, | |
193 | .setsockopt = sock_no_setsockopt, | |
194 | .getsockopt = sock_no_getsockopt, | |
195 | .connect = sock_no_connect, | |
196 | .socketpair = sock_no_socketpair, | |
197 | .accept = sock_no_accept, | |
198 | .mmap = sock_no_mmap | |
1da177e4 LT |
199 | }; |
200 | ||
201 | static struct proto bnep_proto = { | |
202 | .name = "BNEP", | |
203 | .owner = THIS_MODULE, | |
204 | .obj_size = sizeof(struct bt_sock) | |
205 | }; | |
206 | ||
1b8d7ae4 | 207 | static int bnep_sock_create(struct net *net, struct socket *sock, int protocol) |
1da177e4 LT |
208 | { |
209 | struct sock *sk; | |
210 | ||
211 | BT_DBG("sock %p", sock); | |
212 | ||
213 | if (sock->type != SOCK_RAW) | |
214 | return -ESOCKTNOSUPPORT; | |
215 | ||
6257ff21 | 216 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &bnep_proto); |
1da177e4 LT |
217 | if (!sk) |
218 | return -ENOMEM; | |
219 | ||
220 | sock_init_data(sock, sk); | |
221 | ||
222 | sock->ops = &bnep_sock_ops; | |
223 | ||
224 | sock->state = SS_UNCONNECTED; | |
225 | ||
226 | sock_reset_flag(sk, SOCK_ZAPPED); | |
227 | ||
228 | sk->sk_protocol = protocol; | |
229 | sk->sk_state = BT_OPEN; | |
230 | ||
231 | return 0; | |
232 | } | |
233 | ||
234 | static struct net_proto_family bnep_sock_family_ops = { | |
235 | .family = PF_BLUETOOTH, | |
236 | .owner = THIS_MODULE, | |
237 | .create = bnep_sock_create | |
238 | }; | |
239 | ||
240 | int __init bnep_sock_init(void) | |
241 | { | |
242 | int err; | |
243 | ||
244 | err = proto_register(&bnep_proto, 0); | |
245 | if (err < 0) | |
246 | return err; | |
247 | ||
248 | err = bt_sock_register(BTPROTO_BNEP, &bnep_sock_family_ops); | |
249 | if (err < 0) | |
250 | goto error; | |
251 | ||
252 | return 0; | |
253 | ||
254 | error: | |
255 | BT_ERR("Can't register BNEP socket"); | |
256 | proto_unregister(&bnep_proto); | |
257 | return err; | |
258 | } | |
259 | ||
260 | int __exit bnep_sock_cleanup(void) | |
261 | { | |
262 | if (bt_sock_unregister(BTPROTO_BNEP) < 0) | |
263 | BT_ERR("Can't unregister BNEP socket"); | |
264 | ||
265 | proto_unregister(&bnep_proto); | |
266 | ||
267 | return 0; | |
268 | } |