linux-stable/crypto/fips.c
Luis Chamberlain 68629182cd crypto: fips - simplify one-level sysctl registration for crypto_sysctl_table
There is no need to declare an extra tables to just create directory,
this can be easily be done with a prefix path with register_sysctl().

Simplify this registration.

Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2023-03-17 11:16:44 +08:00

100 lines
2.1 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* FIPS 200 support.
*
* Copyright (c) 2008 Neil Horman <nhorman@tuxdriver.com>
*/
#include <linux/export.h>
#include <linux/fips.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sysctl.h>
#include <linux/notifier.h>
#include <generated/utsrelease.h>
int fips_enabled;
EXPORT_SYMBOL_GPL(fips_enabled);
ATOMIC_NOTIFIER_HEAD(fips_fail_notif_chain);
EXPORT_SYMBOL_GPL(fips_fail_notif_chain);
/* Process kernel command-line parameter at boot time. fips=0 or fips=1 */
static int fips_enable(char *str)
{
fips_enabled = !!simple_strtol(str, NULL, 0);
printk(KERN_INFO "fips mode: %s\n",
fips_enabled ? "enabled" : "disabled");
return 1;
}
__setup("fips=", fips_enable);
#define FIPS_MODULE_NAME CONFIG_CRYPTO_FIPS_NAME
#ifdef CONFIG_CRYPTO_FIPS_CUSTOM_VERSION
#define FIPS_MODULE_VERSION CONFIG_CRYPTO_FIPS_VERSION
#else
#define FIPS_MODULE_VERSION UTS_RELEASE
#endif
static char fips_name[] = FIPS_MODULE_NAME;
static char fips_version[] = FIPS_MODULE_VERSION;
static struct ctl_table crypto_sysctl_table[] = {
{
.procname = "fips_enabled",
.data = &fips_enabled,
.maxlen = sizeof(int),
.mode = 0444,
.proc_handler = proc_dointvec
},
{
.procname = "fips_name",
.data = &fips_name,
.maxlen = 64,
.mode = 0444,
.proc_handler = proc_dostring
},
{
.procname = "fips_version",
.data = &fips_version,
.maxlen = 64,
.mode = 0444,
.proc_handler = proc_dostring
},
{}
};
static struct ctl_table_header *crypto_sysctls;
static void crypto_proc_fips_init(void)
{
crypto_sysctls = register_sysctl("crypto", crypto_sysctl_table);
}
static void crypto_proc_fips_exit(void)
{
unregister_sysctl_table(crypto_sysctls);
}
void fips_fail_notify(void)
{
if (fips_enabled)
atomic_notifier_call_chain(&fips_fail_notif_chain, 0, NULL);
}
EXPORT_SYMBOL_GPL(fips_fail_notify);
static int __init fips_init(void)
{
crypto_proc_fips_init();
return 0;
}
static void __exit fips_exit(void)
{
crypto_proc_fips_exit();
}
subsys_initcall(fips_init);
module_exit(fips_exit);