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limerence
59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (c) 2023 Huawei Device Co., Ltd.
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*/
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#ifndef _EXEC_SIGNATURE_INFO_H
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#define _EXEC_SIGNATURE_INFO_H
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#include <linux/types.h>
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#include <linux/fs.h>
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#include <linux/rbtree.h>
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#include <linux/list.h>
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struct exec_segment_info {
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uintptr_t file_offset;
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size_t size;
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};
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#define FILE_SIGNATURE_INVALID 0
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#define FILE_SIGNATURE_FS_VERITY 1
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#define FILE_SIGNATURE_DM_VERITY 2
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#define FILE_SIGNATURE_MASK 0x0000000F
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#define FILE_SIGNATURE_DELETE 0x80000000
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struct exec_file_signature_info {
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struct rb_node rb_node;
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atomic_t reference;
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unsigned int type;
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uintptr_t inode;
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unsigned int code_segment_count;
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struct exec_segment_info *code_segments;
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};
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static inline bool exec_file_signature_is_fs_verity(const struct exec_file_signature_info *signature_info)
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{
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return (signature_info->type & FILE_SIGNATURE_MASK) == FILE_SIGNATURE_FS_VERITY;
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}
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static inline bool exec_file_signature_is_dm_verity(const struct exec_file_signature_info *signature_info)
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{
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return (signature_info->type & FILE_SIGNATURE_MASK) == FILE_SIGNATURE_DM_VERITY;
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}
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static inline bool exec_file_signature_is_verity(const struct exec_file_signature_info *signature_info)
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{
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return (signature_info->type & FILE_SIGNATURE_MASK) == FILE_SIGNATURE_DM_VERITY ||
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(signature_info->type & FILE_SIGNATURE_MASK) == FILE_SIGNATURE_FS_VERITY;
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}
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static inline bool exec_file_signature_is_delete(const struct exec_file_signature_info *signature_info)
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{
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return !!(signature_info->type & FILE_SIGNATURE_DELETE);
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}
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int parse_elf_code_segment_info(struct file *file, struct exec_file_signature_info **code_segment_info);
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int get_exec_file_signature_info(struct file *file, bool is_exec, struct exec_file_signature_info **info_ptr);
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int put_exec_file_signature_info(struct exec_file_signature_info *exec_info);
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void delete_exec_file_signature_info(struct inode *file_node);
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#endif
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