OVMS3/OVMS.V3/components/wolfssl/linuxkm/module_hooks.c

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/* module_hooks.c -- module load/unload hooks for libwolfssl.ko
*
* Copyright (C) 2006-2020 wolfSSL Inc.
*
* This file is part of wolfSSL.
*
* wolfSSL 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.
*
* wolfSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <wolfssl/wolfcrypt/settings.h>
#include <wolfssl/wolfcrypt/error-crypt.h>
#include <wolfssl/ssl.h>
#ifndef NO_CRYPT_TEST
#include <wolfcrypt/test/test.h>
#include <linux/delay.h>
#endif
static int libwolfssl_cleanup(void) {
int ret;
#ifdef WOLFCRYPT_ONLY
ret = wolfCrypt_Cleanup();
if (ret != 0)
pr_err("wolfCrypt_Cleanup() failed: %s", wc_GetErrorString(ret));
else
pr_info("wolfCrypt " LIBWOLFSSL_VERSION_STRING " cleanup complete.\n");
#else
ret = wolfSSL_Cleanup();
if (ret != WOLFSSL_SUCCESS)
pr_err("wolfSSL_Cleanup() failed: %s", wc_GetErrorString(ret));
else
pr_info("wolfSSL " LIBWOLFSSL_VERSION_STRING " cleanup complete.\n");
#endif
return ret;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 0, 0)
static int __init wolfssl_init(void)
#else
static int wolfssl_init(void)
#endif
{
int ret;
#ifdef WOLFCRYPT_ONLY
ret = wolfCrypt_Init();
if (ret != 0) {
pr_err("wolfCrypt_Init() failed: %s", wc_GetErrorString(ret));
return -ENOTRECOVERABLE;
}
#else
ret = wolfSSL_Init();
if (ret != WOLFSSL_SUCCESS) {
pr_err("wolfSSL_Init() failed: %s", wc_GetErrorString(ret));
return -ENOTRECOVERABLE;
}
#endif
#ifndef NO_CRYPT_TEST
ret = wolfcrypt_test(NULL);
if (ret < 0) {
pr_err("wolfcrypt self-test failed with return code %d.", ret);
(void)libwolfssl_cleanup();
msleep(10);
return -ENOTRECOVERABLE;
}
pr_info("wolfCrypt self-test passed.\n");
#endif
#ifdef WOLFCRYPT_ONLY
pr_info("wolfCrypt " LIBWOLFSSL_VERSION_STRING " loaded. See https://www.wolfssl.com/ for information.\n");
#else
pr_info("wolfSSL " LIBWOLFSSL_VERSION_STRING " loaded. See https://www.wolfssl.com/ for information.\n");
#endif
pr_info("Copyright (C) 2006-2020 wolfSSL Inc. All Rights Reserved.\n");
return 0;
}
module_init(wolfssl_init);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 0, 0)
static void __exit wolfssl_exit(void)
#else
static void wolfssl_exit(void)
#endif
{
(void)libwolfssl_cleanup();
return;
}
module_exit(wolfssl_exit);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("https://www.wolfssl.com/");
MODULE_DESCRIPTION("libwolfssl cryptographic and protocol facilities");
MODULE_VERSION(LIBWOLFSSL_VERSION_STRING);