OPTEE OS v1.1 REE FS文件系统分析

最新推荐文章于 2025-06-29 21:54:08 发布

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最新推荐文章于 2025-06-29 21:54:08 发布

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分类专栏： OPTEE 文章标签： OPTEE

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TEE文件系统中的文件拆分成一个meta文件和多个block文件存储在非安全端，文件结果如下

/*
* We split a TEE file into multiple blocks and store them
* on REE filesystem. A TEE file is represented by a REE file
* called meta and a number of REE files called blocks. Meta
* file is used for storing file information, e.g. file size
* and backup version of each block.
*
* REE files naming rule is as follows:
*
* <tee_file_name>/meta.<backup_version>
* <tee_file_name>/block0.<backup_version>
* ...
* <tee_file_name>/block15.<backup_version>
*
* Backup_version is used to support atomic update operation.
* Original file will not be updated, instead we create a new
* version of the same file and update the new file instead.
*
* The backup_version of each block file is stored in meta