Verification of a Virtual Filesystem Switch
Verification of a Virtual Filesystem Switch
复制标题
虚拟文件系统交换机的验证
DOI:
10.1007/978-3-642-54108-7_13
复制
发表时间:
2013
期刊:
影响因子:
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通讯作者:
W. Reif
中科院分区:
文献类型:
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作者:
G. Ernst;G. Schellhorn;Dominik Haneberg;J. Pfähler;W. Reif
This work presents part of our verification effort to construct a correct file system for Flash memory. As a blueprint we use UBIFS, which is part of Linux. As all file systems in Linux, UBIFS implements the Virtual Filesystem Switch VFS interface. VFS in turn implements top-level POSIX operations. This paper bridges the gap between an abstract specification of POSIX and a realistic model of VFS by ASM refinement. The models and proofs are mechanized in the interactive theorem prover KIV. Algebraic directory trees are mapped to the pointer structures of VFS using Separation Logic. We consider hard-links, file handles and the partitioning of file content into pages.