49 lines
1.2 KiB
Go
49 lines
1.2 KiB
Go
// Copyright 2015 Google Inc. All Rights Reserved.
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// Author: jacobsa@google.com (Aaron Jacobs)
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package memfs
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import (
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"github.com/jacobsa/fuse"
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"github.com/jacobsa/fuse/fuseutil"
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"github.com/jacobsa/gcloud/syncutil"
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"github.com/jacobsa/gcsfuse/timeutil"
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)
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type memFS struct {
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fuseutil.NotImplementedFileSystem
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/////////////////////////
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// Dependencies
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/////////////////////////
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clock timeutil.Clock
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/////////////////////////
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// Mutable state
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/////////////////////////
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mu syncutil.InvariantMutex
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// The next inode to issue.
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//
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// INVARIANT: nextInode > 0
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nextInode fuse.InodeID // GUARDED_BY(mu)
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// A map from inode number to file or directory with that inode.
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//
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// INVARIANT: inodeIndex[fuse.RootInodeID] != nil
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// INVARIANT: For all keys k, k > 0
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// INVARIANT: For all keys k, k < nextInode
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// INVARIANT: For all keys k, inodeIndex[k] is *memFile or *memDir
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// INVARIANT: For all keys k, inodeIndex[k].inode == k
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// INVARIANT: For all dirs d, all of d's children are in the map.
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inodeIndex map[fuse.InodeID]interface{} // GUARDED_BY(mu)
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}
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// Create a file system that stores data and metadata in memory.
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func NewMemFS(
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clock timeutil.Clock) fuse.FileSystem {
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panic("TODO(jacobsa): Implement NewMemFS.")
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}
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