1 /*
2 * Copyright (c) 2019 François Tigeot <ftigeot@wolfpond.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
10 * disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include <linux/types.h>
28 #include <linux/string.h>
29 #include <linux/init.h>
30 #include <linux/module.h>
31 #include <linux/ctype.h>
32 #include <linux/dmi.h>
33 #include <asm/unaligned.h>
34
35 bool
dmi_match(enum dmi_field f,const char * str)36 dmi_match(enum dmi_field f, const char *str)
37 {
38 const char *s = NULL;
39
40 switch (f) {
41 case DMI_NONE:
42 break;
43 case DMI_SYS_VENDOR:
44 s = kgetenv("smbios.system.maker");
45 if (s != NULL && !strcmp(s, str))
46 return true;
47 break;
48 case DMI_BOARD_VENDOR:
49 s = kgetenv("smbios.planar.maker");
50 if (s != NULL && !strcmp(s, str))
51 return true;
52 break;
53 case DMI_PRODUCT_NAME:
54 s = kgetenv("smbios.system.product");
55 if (s != NULL && !strcmp(s, str))
56 return true;
57 break;
58 case DMI_BOARD_NAME:
59 s = kgetenv("smbios.planar.product");
60 if (s != NULL && !strcmp(s, str))
61 return true;
62 break;
63 default:
64 return false;
65 }
66
67 return false;
68 }
69