1// SPDX-License-Identifier: GPL-2.0-or-later
 2/*
 3 * FIPS 200 support.
 4 *
 5 * Copyright (c) 2008 Neil Horman <nhorman@tuxdriver.com>
 
 
 
 
 
 
 6 */
 7
 8#include <linux/export.h>
 9#include <linux/fips.h>
10#include <linux/init.h>
11#include <linux/module.h>
12#include <linux/kernel.h>
13#include <linux/sysctl.h>
14#include <linux/notifier.h>
15
16int fips_enabled;
17EXPORT_SYMBOL_GPL(fips_enabled);
18
19ATOMIC_NOTIFIER_HEAD(fips_fail_notif_chain);
20EXPORT_SYMBOL_GPL(fips_fail_notif_chain);
21
22/* Process kernel command-line parameter at boot time. fips=0 or fips=1 */
23static int fips_enable(char *str)
24{
25	fips_enabled = !!simple_strtol(str, NULL, 0);
26	printk(KERN_INFO "fips mode: %s\n",
27		fips_enabled ? "enabled" : "disabled");
28	return 1;
29}
30
31__setup("fips=", fips_enable);
32
33static struct ctl_table crypto_sysctl_table[] = {
34	{
35		.procname       = "fips_enabled",
36		.data           = &fips_enabled,
37		.maxlen         = sizeof(int),
38		.mode           = 0444,
39		.proc_handler   = proc_dointvec
40	},
41	{}
42};
43
44static struct ctl_table crypto_dir_table[] = {
45	{
46		.procname       = "crypto",
47		.mode           = 0555,
48		.child          = crypto_sysctl_table
49	},
50	{}
51};
52
53static struct ctl_table_header *crypto_sysctls;
54
55static void crypto_proc_fips_init(void)
56{
57	crypto_sysctls = register_sysctl_table(crypto_dir_table);
58}
59
60static void crypto_proc_fips_exit(void)
61{
62	unregister_sysctl_table(crypto_sysctls);
63}
64
65void fips_fail_notify(void)
66{
67	if (fips_enabled)
68		atomic_notifier_call_chain(&fips_fail_notif_chain, 0, NULL);
69}
70EXPORT_SYMBOL_GPL(fips_fail_notify);
71
72static int __init fips_init(void)
73{
74	crypto_proc_fips_init();
75	return 0;
76}
77
78static void __exit fips_exit(void)
79{
80	crypto_proc_fips_exit();
81}
82
83subsys_initcall(fips_init);
84module_exit(fips_exit);

 
 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
20int fips_enabled;
21EXPORT_SYMBOL_GPL(fips_enabled);
22
 
 
 
23/* Process kernel command-line parameter at boot time. fips=0 or fips=1 */
24static 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
34static 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
45static struct ctl_table crypto_dir_table[] = {
46	{
47		.procname       = "crypto",
48		.mode           = 0555,
49		.child          = crypto_sysctl_table
50	},
51	{}
52};
53
54static struct ctl_table_header *crypto_sysctls;
55
56static void crypto_proc_fips_init(void)
57{
58	crypto_sysctls = register_sysctl_table(crypto_dir_table);
59}
60
61static void crypto_proc_fips_exit(void)
62{
63	unregister_sysctl_table(crypto_sysctls);
64}
65
 
 
 
 
 
 
 
66static int __init fips_init(void)
67{
68	crypto_proc_fips_init();
69	return 0;
70}
71
72static void __exit fips_exit(void)
73{
74	crypto_proc_fips_exit();
75}
76
77module_init(fips_init);
78module_exit(fips_exit);