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