1 /* $NetBSD: descr.c,v 1.2 2002/02/20 20:31:07 christos 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/types.h> 30 31 #include <assert.h> 32 #include <errno.h> 33 #include <stdlib.h> 34 #include <string.h> 35 #include <unistd.h> 36 #include <sys/time.h> 37 38 #include <dev/usb/usb.h> 39 40 #include "usbhid.h" 41 #include "usbvar.h" 42 43 report_desc_t 44 hid_get_report_desc(int fd) 45 { 46 struct usb_ctl_report_desc rep; 47 48 _DIAGASSERT(fd != -1); 49 50 rep.ucrd_size = 0; 51 if (ioctl(fd, USB_GET_REPORT_DESC, &rep) < 0) 52 return (NULL); 53 54 return hid_use_report_desc(rep.ucrd_data, (unsigned int)rep.ucrd_size); 55 } 56 57 report_desc_t 58 hid_use_report_desc(unsigned char *data, unsigned int size) 59 { 60 report_desc_t r; 61 62 r = malloc(sizeof(*r) + size); 63 if (r == 0) { 64 errno = ENOMEM; 65 return (NULL); 66 } 67 r->size = size; 68 memcpy(r->data, data, size); 69 return (r); 70 } 71 72 void 73 hid_dispose_report_desc(report_desc_t r) 74 { 75 76 free(r); 77 } 78