117 lines
2.9 KiB
C
Executable file
117 lines
2.9 KiB
C
Executable file
/*
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* This code is based on IMA's code
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*
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* Copyright (C) 2016 Samsung Electronics, Inc.
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*
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* Egor Uleyskiy, <e.uleyskiy@samsung.com>
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* Viacheslav Vovchenko <v.vovchenko@samsung.com>
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* Yevgen Kopylov <y.kopylov@samsung.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __LINUX_FIVE_H
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#define __LINUX_FIVE_H
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#include <linux/types.h>
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#include <linux/crypto.h>
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#include <linux/security.h>
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#include <linux/hash.h>
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#include <linux/audit.h>
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#include <linux/workqueue.h>
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#include <linux/xattr.h>
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#include "five_cert.h"
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#include "five_crypto.h"
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#define XATTR_FIVE_SUFFIX "five"
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#define XATTR_NAME_FIVE (XATTR_SECURITY_PREFIX XATTR_FIVE_SUFFIX)
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#define XATTR_PA_SUFFIX "pa"
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#define XATTR_NAME_PA (XATTR_USER_PREFIX XATTR_PA_SUFFIX)
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/* set during initialization */
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extern int five_hash_algo;
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struct worker_context {
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struct work_struct data_work;
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struct task_integrity *tint;
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};
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struct f_signature_task {
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struct task_integrity *tint;
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struct file *file;
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};
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struct f_signature_context {
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struct work_struct data_work;
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struct f_signature_task payload;
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};
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struct five_stat {
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u64 inode_iversion;
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u64 cache_iversion;
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u32 cache_status;
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u32 is_dm_verity;
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};
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/* Internal FIVE function definitions */
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int five_init(void);
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/* FIVE policy related functions */
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enum five_hooks {
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FILE_CHECK = 1,
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MMAP_CHECK,
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BPRM_CHECK,
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POST_SETATTR
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};
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struct file_verification_result {
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struct task_struct *task;
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struct file *file;
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struct integrity_iint_cache *iint;
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enum five_hooks fn;
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int five_result;
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void *xattr;
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size_t xattr_len;
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};
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static inline void file_verification_result_init(
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struct file_verification_result *result)
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{
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memset(result, 0, sizeof(*result));
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}
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static inline void file_verification_result_deinit(
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struct file_verification_result *result)
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{
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kfree(result->xattr);
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memset(result, 0, sizeof(*result));
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}
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int five_appraise_measurement(struct task_struct *task, int func,
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struct integrity_iint_cache *iint,
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struct file *file,
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struct five_cert *cert);
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int five_read_xattr(struct dentry *dentry, char **xattr_value);
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int five_check_params(struct task_struct *task, struct file *file);
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const char *five_d_path(const struct path *path, char **pathbuf,
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char *namebuf);
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int five_digsig_verify(struct five_cert *cert,
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const char *digest, int digestlen);
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int five_reboot_notifier(struct notifier_block *nb,
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unsigned long action, void *unused);
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int __init five_load_built_x509(void);
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int __init five_keyring_init(void);
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const char *five_get_string_fn(enum five_hooks fn);
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#endif
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