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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2008 IBM Corporation
*
* Authors:
* Mimi Zohar <zohar@us.ibm.com>
*
* File: integrity_iint.c
* - initialize the integrity directory in securityfs
* - load IMA and EVM keys
*/
#include <linux/security.h>
#include "integrity.h"
struct dentry *integrity_dir;
/*
* integrity_kernel_read - read data from the file
*
* This is a function for reading file content instead of kernel_read().
* It does not perform locking checks to ensure it cannot be blocked.
* It does not perform security checks because it is irrelevant for IMA.
*
*/
int integrity_kernel_read(struct file *file, loff_t offset,
void *addr, unsigned long count)
{
return __kernel_read(file, addr, count, &offset);
}
/*
* integrity_load_keys - load integrity keys hook
*
* Hooks is called from init/main.c:kernel_init_freeable()
* when rootfs is ready
*/
void __init integrity_load_keys(void)
{
ima_load_x509();
if (!IS_ENABLED(CONFIG_IMA_LOAD_X509))
evm_load_x509();
}
static int __init integrity_fs_init(void)
{
integrity_dir = securityfs_create_dir("integrity", NULL);
if (IS_ERR(integrity_dir)) {
int ret = PTR_ERR(integrity_dir);
if (ret != -ENODEV)
pr_err("Unable to create integrity sysfs dir: %d\n",
ret);
integrity_dir = NULL;
return ret;
}
return 0;
}
late_initcall(integrity_fs_init)
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