It is clear that VFS provides programs to access different file systems with same interfaces. Meanwhile, FHS is standard for directory structure.
I would like to have some inputs regarding them because I am not very clear of how they work together.
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1 Answer
VFS is the virtual filesystem interface, it has been introduced by Sun with SunOS-3 in 1985. It describes the interface between a filesystem implementation and the rest of the kernel. The functions covered by VFS are e.g. open(), read() write() readdir().
FHS is a filesystem hierarchy standard and the filesystem hierarchy standard that is used by Linux that was derived from the FHS introduced by Sun for SunOS-4 in 1987.
In other words: VFS allows filesystems to be integrated into the driver structure while FHS just describes how to put files in the system directories.
In other words: there is no relation between both.
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In other words, FHS is a guideline for kernel programmers to follow, right?Ron Vince– Ron Vince2015-09-19 14:58:29 +00:00Commented Sep 19, 2015 at 14:58
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2@RonVince No, FHS has nothing to do with the kernel, and little to do with programmers for that matter. FHS is a guideline for distributions (and for programmers if they do their own packaging).Gilles 'SO- stop being evil'– Gilles 'SO- stop being evil'2015-09-19 20:19:09 +00:00Commented Sep 19, 2015 at 20:19
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What is driver structure? Did you actually mean hierarchy structure?Ron Vince– Ron Vince2015-09-25 13:17:06 +00:00Commented Sep 25, 2015 at 13:17