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usb_verbose.c revision 1.4 
      1 /*	$NetBSD: usb_verbose.c,v 1.4 2010/08/07 21:09:48 christos Exp $ */
      2 /*	$FreeBSD: src/sys/dev/usb/usb_subr.c,v 1.18 1999/11/17 22:33:47 n_hibma Exp $	*/
      3 
      4 /*
      5  * Copyright (c) 1998, 2004 The NetBSD Foundation, Inc.
      6  * All rights reserved.
      7  *
      8  * This code is derived from software contributed to The NetBSD Foundation
      9  * by Lennart Augustsson (lennart (at) augustsson.net) at
     10  * Carlstedt Research & Technology.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     23  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     31  * POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #include <sys/cdefs.h>
     35 __KERNEL_RCSID(0, "$NetBSD: usb_verbose.c,v 1.4 2010/08/07 21:09:48 christos Exp $");
     36 
     37 #include <sys/param.h>
     38 #include <sys/module.h>
     39 
     40 #include <dev/usb/usb.h>
     41 #include <dev/usb/usbdevs.h>
     42 #include <dev/usb/usb_verbose.h>
     43 
     44 /*
     45  * Descriptions of known vendors and devices ("products").
     46  */
     47 struct usb_vendor {
     48 	usb_vendor_id_t		vendor;
     49 	const char		*vendorname;
     50 };
     51 struct usb_product {
     52 	usb_vendor_id_t		vendor;
     53 	usb_product_id_t	product;
     54 	const char		*productname;
     55 };
     56 
     57 #include <dev/usb/usbdevs_data.h>
     58 
     59 void get_usb_vendor_real(char *, size_t, usb_vendor_id_t);
     60 void get_usb_product_real(char *, size_t, usb_vendor_id_t, usb_product_id_t);
     61 
     62 MODULE(MODULE_CLASS_MISC, usbverbose, NULL);
     63 
     64 static int
     65 usbverbose_modcmd(modcmd_t cmd, void *arg)
     66 {
     67 	static void (*saved_usb_vendor)(char *, size_t, usb_vendor_id_t);
     68 	static void (*saved_usb_product)(char *, size_t, usb_vendor_id_t,
     69 		usb_product_id_t);
     70 
     71 	switch (cmd) {
     72 	case MODULE_CMD_INIT:
     73 		saved_usb_vendor = get_usb_vendor;
     74 		saved_usb_product = get_usb_product;
     75 		get_usb_vendor = get_usb_vendor_real;
     76 		get_usb_product = get_usb_product_real;
     77 		usb_verbose_loaded = 1;
     78 		return 0;
     79 	case MODULE_CMD_FINI:
     80 		get_usb_vendor = saved_usb_vendor;
     81 		get_usb_product = saved_usb_product;
     82 		usb_verbose_loaded = 0;
     83 		return 0;
     84 	default:
     85 		return ENOTTY;
     86 	}
     87 }
     88 
     89 void get_usb_vendor_real(char *v, size_t vl, usb_vendor_id_t v_id)
     90 {
     91 	int n;
     92 
     93 	/* There is no need for strlcpy below. */
     94 	for (n = 0; n < usb_nvendors; n++)
     95 		if (usb_vendors[n].vendor == v_id) {
     96 			strlcpy(v, usb_vendors[n].vendorname, vl);
     97 			break;
     98 		}
     99 }
    100 
    101 void get_usb_product_real(char *p, size_t pl, usb_vendor_id_t v_id,
    102     usb_product_id_t p_id)
    103 {
    104 	int n;
    105 
    106 	/* There is no need for strlcpy below. */
    107 	for (n = 0; n < usb_nproducts; n++)
    108 		if (usb_products[n].vendor == v_id &&
    109 		    usb_products[n].product == p_id) {
    110 			strlcpy(p, usb_products[n].productname, pl);
    111 			break;
    112 		}
    113 }
    114