1 /* $NetBSD: descr.c,v 1.6 2015/12/31 20:35:21 jakllsch Exp $ */
2
3 /*
4 * Copyright (c) 1999 Lennart Augustsson <augustss@NetBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __RCSID("$NetBSD: descr.c,v 1.6 2015/12/31 20:35:21 jakllsch Exp $");
31
32 #include <sys/types.h>
33
34 #include <assert.h>
35 #include <errno.h>
36 #include <stdlib.h>
37 #include <string.h>
38 #include <unistd.h>
39 #include <sys/time.h>
40
41 #include <dev/usb/usb.h>
42
43 #include "usbhid.h"
44 #include "usbvar.h"
45
46 report_desc_t
hid_get_report_desc(int fd)47 hid_get_report_desc(int fd)
48 {
49 struct usb_ctl_report_desc rep;
50
51 _DIAGASSERT(fd != -1);
52
53 rep.ucrd_size = 0;
54 if (ioctl(fd, USB_GET_REPORT_DESC, &rep) < 0)
55 return (NULL);
56
57 return hid_use_report_desc(rep.ucrd_data, (unsigned int)rep.ucrd_size);
58 }
59
60 report_desc_t
hid_use_report_desc(const uint8_t * data,unsigned int size)61 hid_use_report_desc(const uint8_t *data, unsigned int size)
62 {
63 report_desc_t r;
64
65 r = malloc(sizeof(*r) + size);
66 if (r == NULL) {
67 errno = ENOMEM;
68 return (NULL);
69 }
70 r->size = size;
71 memcpy(r->data, data, size);
72 return (r);
73 }
74
75 void
hid_dispose_report_desc(report_desc_t r)76 hid_dispose_report_desc(report_desc_t r)
77 {
78
79 free(r);
80 }
81