/* * FIPS 200 support. * * Copyright (c) 2008 Neil Horman <nhorman@tuxdriver.com> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. * */ #include <linux/export.h> #include <linux/fips.h> #include <linux/init.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/sysctl.h> int fips_enabled; EXPORT_SYMBOL_GPL(fips_enabled); /* 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); static struct ctl_table crypto_sysctl_table[] = { { .procname = "fips_enabled", .data = &fips_enabled, .maxlen = sizeof(int), .mode = 0444, .proc_handler = proc_dointvec }, {} }; static struct ctl_table crypto_dir_table[] = { { .procname = "crypto", .mode = 0555, .child = crypto_sysctl_table }, {} }; static struct ctl_table_header *crypto_sysctls; static void crypto_proc_fips_init(void) { crypto_sysctls = register_sysctl_table(crypto_dir_table); } static void crypto_proc_fips_exit(void) { unregister_sysctl_table(crypto_sysctls); } static int __init fips_init(void) { crypto_proc_fips_init(); return 0; } static void __exit fips_exit(void) { crypto_proc_fips_exit(); } module_init(fips_init); module_exit(fips_exit);