1 /*
2 * FIPS 200 support.
3 *
4 * Copyright (c) 2008 Neil Horman <nhorman@tuxdriver.com>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the Free
8 * Software Foundation; either version 2 of the License, or (at your option)
9 * any later version.
10 *
11 */
12
13 #include <linux/export.h>
14 #include <linux/fips.h>
15 #include <linux/init.h>
16 #include <linux/module.h>
17 #include <linux/kernel.h>
18 #include <linux/sysctl.h>
19
20 int fips_enabled;
21 EXPORT_SYMBOL_GPL(fips_enabled);
22
23 /* Process kernel command-line parameter at boot time. fips=0 or fips=1 */
fips_enable(char * str)24 static int fips_enable(char *str)
25 {
26 fips_enabled = !!simple_strtol(str, NULL, 0);
27 printk(KERN_INFO "fips mode: %s\n",
28 fips_enabled ? "enabled" : "disabled");
29 return 1;
30 }
31
32 __setup("fips=", fips_enable);
33
34 static struct ctl_table crypto_sysctl_table[] = {
35 {
36 .procname = "fips_enabled",
37 .data = &fips_enabled,
38 .maxlen = sizeof(int),
39 .mode = 0444,
40 .proc_handler = proc_dointvec
41 },
42 {}
43 };
44
45 static struct ctl_table crypto_dir_table[] = {
46 {
47 .procname = "crypto",
48 .mode = 0555,
49 .child = crypto_sysctl_table
50 },
51 {}
52 };
53
54 static struct ctl_table_header *crypto_sysctls;
55
crypto_proc_fips_init(void)56 static void crypto_proc_fips_init(void)
57 {
58 crypto_sysctls = register_sysctl_table(crypto_dir_table);
59 }
60
crypto_proc_fips_exit(void)61 static void crypto_proc_fips_exit(void)
62 {
63 unregister_sysctl_table(crypto_sysctls);
64 }
65
fips_init(void)66 static int __init fips_init(void)
67 {
68 crypto_proc_fips_init();
69 return 0;
70 }
71
fips_exit(void)72 static void __exit fips_exit(void)
73 {
74 crypto_proc_fips_exit();
75 }
76
77 module_init(fips_init);
78 module_exit(fips_exit);
79
