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v5.4
  1/*
  2   HIDP implementation for Linux Bluetooth stack (BlueZ).
  3   Copyright (C) 2003-2004 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#include <linux/file.h>
 
 
 
 
 25
 26#include "hidp.h"
 27
 28static struct bt_sock_list hidp_sk_list = {
 29	.lock = __RW_LOCK_UNLOCKED(hidp_sk_list.lock)
 30};
 31
 32static int hidp_sock_release(struct socket *sock)
 33{
 34	struct sock *sk = sock->sk;
 35
 36	BT_DBG("sock %p sk %p", sock, sk);
 37
 38	if (!sk)
 39		return 0;
 40
 41	bt_sock_unlink(&hidp_sk_list, sk);
 42
 43	sock_orphan(sk);
 44	sock_put(sk);
 45
 46	return 0;
 47}
 48
 49static int do_hidp_sock_ioctl(struct socket *sock, unsigned int cmd, void __user *argp)
 50{
 
 51	struct hidp_connadd_req ca;
 52	struct hidp_conndel_req cd;
 53	struct hidp_connlist_req cl;
 54	struct hidp_conninfo ci;
 55	struct socket *csock;
 56	struct socket *isock;
 57	int err;
 58
 59	BT_DBG("cmd %x arg %p", cmd, argp);
 60
 61	switch (cmd) {
 62	case HIDPCONNADD:
 63		if (!capable(CAP_NET_ADMIN))
 64			return -EPERM;
 65
 66		if (copy_from_user(&ca, argp, sizeof(ca)))
 67			return -EFAULT;
 68
 69		csock = sockfd_lookup(ca.ctrl_sock, &err);
 70		if (!csock)
 71			return err;
 72
 73		isock = sockfd_lookup(ca.intr_sock, &err);
 74		if (!isock) {
 75			sockfd_put(csock);
 76			return err;
 77		}
 78		ca.name[sizeof(ca.name)-1] = 0;
 79
 80		err = hidp_connection_add(&ca, csock, isock);
 81		if (!err && copy_to_user(argp, &ca, sizeof(ca)))
 82			err = -EFAULT;
 
 
 
 83
 84		sockfd_put(csock);
 85		sockfd_put(isock);
 
 
 
 
 
 
 86
 87		return err;
 88
 89	case HIDPCONNDEL:
 90		if (!capable(CAP_NET_ADMIN))
 91			return -EPERM;
 92
 93		if (copy_from_user(&cd, argp, sizeof(cd)))
 94			return -EFAULT;
 95
 96		return hidp_connection_del(&cd);
 97
 98	case HIDPGETCONNLIST:
 99		if (copy_from_user(&cl, argp, sizeof(cl)))
100			return -EFAULT;
101
102		if (cl.cnum <= 0)
103			return -EINVAL;
104
105		err = hidp_get_connlist(&cl);
106		if (!err && copy_to_user(argp, &cl, sizeof(cl)))
107			return -EFAULT;
108
109		return err;
110
111	case HIDPGETCONNINFO:
112		if (copy_from_user(&ci, argp, sizeof(ci)))
113			return -EFAULT;
114
115		err = hidp_get_conninfo(&ci);
116		if (!err && copy_to_user(argp, &ci, sizeof(ci)))
117			return -EFAULT;
118
119		return err;
120	}
121
122	return -EINVAL;
123}
124
125static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
126{
127	return do_hidp_sock_ioctl(sock, cmd, (void __user *)arg);
128}
129
130#ifdef CONFIG_COMPAT
131struct compat_hidp_connadd_req {
132	int   ctrl_sock;	/* Connected control socket */
133	int   intr_sock;	/* Connected interrupt socket */
134	__u16 parser;
135	__u16 rd_size;
136	compat_uptr_t rd_data;
137	__u8  country;
138	__u8  subclass;
139	__u16 vendor;
140	__u16 product;
141	__u16 version;
142	__u32 flags;
143	__u32 idle_to;
144	char  name[128];
145};
146
147static int hidp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
148{
149	void __user *argp = compat_ptr(arg);
150	int err;
151
152	if (cmd == HIDPGETCONNLIST) {
153		struct hidp_connlist_req cl;
154		u32 __user *p = argp;
155		u32 uci;
 
156
157		if (get_user(cl.cnum, p) || get_user(uci, p + 1))
 
158			return -EFAULT;
159
160		cl.ci = compat_ptr(uci);
161
162		if (cl.cnum <= 0)
163			return -EINVAL;
164
165		err = hidp_get_connlist(&cl);
166
167		if (!err && put_user(cl.cnum, p))
168			err = -EFAULT;
169
170		return err;
171	} else if (cmd == HIDPCONNADD) {
172		struct compat_hidp_connadd_req ca32;
173		struct hidp_connadd_req ca;
174		struct socket *csock;
175		struct socket *isock;
176
177		if (!capable(CAP_NET_ADMIN))
178			return -EPERM;
179
180		if (copy_from_user(&ca32, (void __user *) arg, sizeof(ca32)))
181			return -EFAULT;
182
183		ca.ctrl_sock = ca32.ctrl_sock;
184		ca.intr_sock = ca32.intr_sock;
185		ca.parser = ca32.parser;
186		ca.rd_size = ca32.rd_size;
187		ca.rd_data = compat_ptr(ca32.rd_data);
188		ca.country = ca32.country;
189		ca.subclass = ca32.subclass;
190		ca.vendor = ca32.vendor;
191		ca.product = ca32.product;
192		ca.version = ca32.version;
193		ca.flags = ca32.flags;
194		ca.idle_to = ca32.idle_to;
195		ca32.name[sizeof(ca32.name) - 1] = '\0';
196		memcpy(ca.name, ca32.name, 128);
197
198		csock = sockfd_lookup(ca.ctrl_sock, &err);
199		if (!csock)
200			return err;
201
202		isock = sockfd_lookup(ca.intr_sock, &err);
203		if (!isock) {
204			sockfd_put(csock);
205			return err;
206		}
207
208		err = hidp_connection_add(&ca, csock, isock);
209		if (!err && copy_to_user(argp, &ca32, sizeof(ca32)))
210			err = -EFAULT;
211
212		sockfd_put(csock);
213		sockfd_put(isock);
214
215		return err;
 
 
216	}
217
218	return hidp_sock_ioctl(sock, cmd, arg);
219}
220#endif
221
222static const struct proto_ops hidp_sock_ops = {
223	.family		= PF_BLUETOOTH,
224	.owner		= THIS_MODULE,
225	.release	= hidp_sock_release,
226	.ioctl		= hidp_sock_ioctl,
227#ifdef CONFIG_COMPAT
228	.compat_ioctl	= hidp_sock_compat_ioctl,
229#endif
230	.bind		= sock_no_bind,
231	.getname	= sock_no_getname,
232	.sendmsg	= sock_no_sendmsg,
233	.recvmsg	= sock_no_recvmsg,
 
234	.listen		= sock_no_listen,
235	.shutdown	= sock_no_shutdown,
236	.setsockopt	= sock_no_setsockopt,
237	.getsockopt	= sock_no_getsockopt,
238	.connect	= sock_no_connect,
239	.socketpair	= sock_no_socketpair,
240	.accept		= sock_no_accept,
241	.mmap		= sock_no_mmap
242};
243
244static struct proto hidp_proto = {
245	.name		= "HIDP",
246	.owner		= THIS_MODULE,
247	.obj_size	= sizeof(struct bt_sock)
248};
249
250static int hidp_sock_create(struct net *net, struct socket *sock, int protocol,
251			    int kern)
252{
253	struct sock *sk;
254
255	BT_DBG("sock %p", sock);
256
257	if (sock->type != SOCK_RAW)
258		return -ESOCKTNOSUPPORT;
259
260	sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hidp_proto, kern);
261	if (!sk)
262		return -ENOMEM;
263
264	sock_init_data(sock, sk);
265
266	sock->ops = &hidp_sock_ops;
267
268	sock->state = SS_UNCONNECTED;
269
270	sock_reset_flag(sk, SOCK_ZAPPED);
271
272	sk->sk_protocol = protocol;
273	sk->sk_state	= BT_OPEN;
274
275	bt_sock_link(&hidp_sk_list, sk);
276
277	return 0;
278}
279
280static const struct net_proto_family hidp_sock_family_ops = {
281	.family	= PF_BLUETOOTH,
282	.owner	= THIS_MODULE,
283	.create	= hidp_sock_create
284};
285
286int __init hidp_init_sockets(void)
287{
288	int err;
289
290	err = proto_register(&hidp_proto, 0);
291	if (err < 0)
292		return err;
293
294	err = bt_sock_register(BTPROTO_HIDP, &hidp_sock_family_ops);
295	if (err < 0) {
296		BT_ERR("Can't register HIDP socket");
297		goto error;
298	}
299
300	err = bt_procfs_init(&init_net, "hidp", &hidp_sk_list, NULL);
301	if (err < 0) {
302		BT_ERR("Failed to create HIDP proc file");
303		bt_sock_unregister(BTPROTO_HIDP);
304		goto error;
305	}
306
307	BT_INFO("HIDP socket layer initialized");
308
309	return 0;
310
311error:
 
312	proto_unregister(&hidp_proto);
313	return err;
314}
315
316void __exit hidp_cleanup_sockets(void)
317{
318	bt_procfs_cleanup(&init_net, "hidp");
319	bt_sock_unregister(BTPROTO_HIDP);
 
320	proto_unregister(&hidp_proto);
321}
v3.5.6
  1/*
  2   HIDP implementation for Linux Bluetooth stack (BlueZ).
  3   Copyright (C) 2003-2004 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/init.h>
 36#include <linux/compat.h>
 37#include <linux/gfp.h>
 38#include <net/sock.h>
 39
 40#include "hidp.h"
 41
 
 
 
 
 42static int hidp_sock_release(struct socket *sock)
 43{
 44	struct sock *sk = sock->sk;
 45
 46	BT_DBG("sock %p sk %p", sock, sk);
 47
 48	if (!sk)
 49		return 0;
 50
 
 
 51	sock_orphan(sk);
 52	sock_put(sk);
 53
 54	return 0;
 55}
 56
 57static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 58{
 59	void __user *argp = (void __user *) arg;
 60	struct hidp_connadd_req ca;
 61	struct hidp_conndel_req cd;
 62	struct hidp_connlist_req cl;
 63	struct hidp_conninfo ci;
 64	struct socket *csock;
 65	struct socket *isock;
 66	int err;
 67
 68	BT_DBG("cmd %x arg %lx", cmd, arg);
 69
 70	switch (cmd) {
 71	case HIDPCONNADD:
 72		if (!capable(CAP_NET_ADMIN))
 73			return -EACCES;
 74
 75		if (copy_from_user(&ca, argp, sizeof(ca)))
 76			return -EFAULT;
 77
 78		csock = sockfd_lookup(ca.ctrl_sock, &err);
 79		if (!csock)
 80			return err;
 81
 82		isock = sockfd_lookup(ca.intr_sock, &err);
 83		if (!isock) {
 84			sockfd_put(csock);
 85			return err;
 86		}
 
 87
 88		if (csock->sk->sk_state != BT_CONNECTED ||
 89				isock->sk->sk_state != BT_CONNECTED) {
 90			sockfd_put(csock);
 91			sockfd_put(isock);
 92			return -EBADFD;
 93		}
 94
 95		err = hidp_add_connection(&ca, csock, isock);
 96		if (!err) {
 97			if (copy_to_user(argp, &ca, sizeof(ca)))
 98				err = -EFAULT;
 99		} else {
100			sockfd_put(csock);
101			sockfd_put(isock);
102		}
103
104		return err;
105
106	case HIDPCONNDEL:
107		if (!capable(CAP_NET_ADMIN))
108			return -EACCES;
109
110		if (copy_from_user(&cd, argp, sizeof(cd)))
111			return -EFAULT;
112
113		return hidp_del_connection(&cd);
114
115	case HIDPGETCONNLIST:
116		if (copy_from_user(&cl, argp, sizeof(cl)))
117			return -EFAULT;
118
119		if (cl.cnum <= 0)
120			return -EINVAL;
121
122		err = hidp_get_connlist(&cl);
123		if (!err && copy_to_user(argp, &cl, sizeof(cl)))
124			return -EFAULT;
125
126		return err;
127
128	case HIDPGETCONNINFO:
129		if (copy_from_user(&ci, argp, sizeof(ci)))
130			return -EFAULT;
131
132		err = hidp_get_conninfo(&ci);
133		if (!err && copy_to_user(argp, &ci, sizeof(ci)))
134			return -EFAULT;
135
136		return err;
137	}
138
139	return -EINVAL;
140}
141
 
 
 
 
 
142#ifdef CONFIG_COMPAT
143struct compat_hidp_connadd_req {
144	int   ctrl_sock;	/* Connected control socket */
145	int   intr_sock;	/* Connected interrupt socket */
146	__u16 parser;
147	__u16 rd_size;
148	compat_uptr_t rd_data;
149	__u8  country;
150	__u8  subclass;
151	__u16 vendor;
152	__u16 product;
153	__u16 version;
154	__u32 flags;
155	__u32 idle_to;
156	char  name[128];
157};
158
159static int hidp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
160{
 
 
 
161	if (cmd == HIDPGETCONNLIST) {
162		struct hidp_connlist_req cl;
 
163		u32 uci;
164		int err;
165
166		if (get_user(cl.cnum, (u32 __user *) arg) ||
167				get_user(uci, (u32 __user *) (arg + 4)))
168			return -EFAULT;
169
170		cl.ci = compat_ptr(uci);
171
172		if (cl.cnum <= 0)
173			return -EINVAL;
174
175		err = hidp_get_connlist(&cl);
176
177		if (!err && put_user(cl.cnum, (u32 __user *) arg))
178			err = -EFAULT;
179
180		return err;
181	} else if (cmd == HIDPCONNADD) {
182		struct compat_hidp_connadd_req ca;
183		struct hidp_connadd_req __user *uca;
 
 
184
185		uca = compat_alloc_user_space(sizeof(*uca));
 
186
187		if (copy_from_user(&ca, (void __user *) arg, sizeof(ca)))
188			return -EFAULT;
189
190		if (put_user(ca.ctrl_sock, &uca->ctrl_sock) ||
191				put_user(ca.intr_sock, &uca->intr_sock) ||
192				put_user(ca.parser, &uca->parser) ||
193				put_user(ca.rd_size, &uca->rd_size) ||
194				put_user(compat_ptr(ca.rd_data), &uca->rd_data) ||
195				put_user(ca.country, &uca->country) ||
196				put_user(ca.subclass, &uca->subclass) ||
197				put_user(ca.vendor, &uca->vendor) ||
198				put_user(ca.product, &uca->product) ||
199				put_user(ca.version, &uca->version) ||
200				put_user(ca.flags, &uca->flags) ||
201				put_user(ca.idle_to, &uca->idle_to) ||
202				copy_to_user(&uca->name[0], &ca.name[0], 128))
203			return -EFAULT;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
204
205		arg = (unsigned long) uca;
 
206
207		/* Fall through. We don't actually write back any _changes_
208		   to the structure anyway, so there's no need to copy back
209		   into the original compat version */
210	}
211
212	return hidp_sock_ioctl(sock, cmd, arg);
213}
214#endif
215
216static const struct proto_ops hidp_sock_ops = {
217	.family		= PF_BLUETOOTH,
218	.owner		= THIS_MODULE,
219	.release	= hidp_sock_release,
220	.ioctl		= hidp_sock_ioctl,
221#ifdef CONFIG_COMPAT
222	.compat_ioctl	= hidp_sock_compat_ioctl,
223#endif
224	.bind		= sock_no_bind,
225	.getname	= sock_no_getname,
226	.sendmsg	= sock_no_sendmsg,
227	.recvmsg	= sock_no_recvmsg,
228	.poll		= sock_no_poll,
229	.listen		= sock_no_listen,
230	.shutdown	= sock_no_shutdown,
231	.setsockopt	= sock_no_setsockopt,
232	.getsockopt	= sock_no_getsockopt,
233	.connect	= sock_no_connect,
234	.socketpair	= sock_no_socketpair,
235	.accept		= sock_no_accept,
236	.mmap		= sock_no_mmap
237};
238
239static struct proto hidp_proto = {
240	.name		= "HIDP",
241	.owner		= THIS_MODULE,
242	.obj_size	= sizeof(struct bt_sock)
243};
244
245static int hidp_sock_create(struct net *net, struct socket *sock, int protocol,
246			    int kern)
247{
248	struct sock *sk;
249
250	BT_DBG("sock %p", sock);
251
252	if (sock->type != SOCK_RAW)
253		return -ESOCKTNOSUPPORT;
254
255	sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hidp_proto);
256	if (!sk)
257		return -ENOMEM;
258
259	sock_init_data(sock, sk);
260
261	sock->ops = &hidp_sock_ops;
262
263	sock->state = SS_UNCONNECTED;
264
265	sock_reset_flag(sk, SOCK_ZAPPED);
266
267	sk->sk_protocol = protocol;
268	sk->sk_state	= BT_OPEN;
269
 
 
270	return 0;
271}
272
273static const struct net_proto_family hidp_sock_family_ops = {
274	.family	= PF_BLUETOOTH,
275	.owner	= THIS_MODULE,
276	.create	= hidp_sock_create
277};
278
279int __init hidp_init_sockets(void)
280{
281	int err;
282
283	err = proto_register(&hidp_proto, 0);
284	if (err < 0)
285		return err;
286
287	err = bt_sock_register(BTPROTO_HIDP, &hidp_sock_family_ops);
288	if (err < 0)
 
 
 
 
 
 
 
 
289		goto error;
 
 
 
290
291	return 0;
292
293error:
294	BT_ERR("Can't register HIDP socket");
295	proto_unregister(&hidp_proto);
296	return err;
297}
298
299void __exit hidp_cleanup_sockets(void)
300{
301	if (bt_sock_unregister(BTPROTO_HIDP) < 0)
302		BT_ERR("Can't unregister HIDP socket");
303
304	proto_unregister(&hidp_proto);
305}