forked from External/grumble
29 lines
698 B
Go
29 lines
698 B
Go
// Copyright (c) 2011 The Grumble Authors
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// The use of this source code is goverened by a BSD-style
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// license that can be found in the LICENSE-file.
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package blobstore
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import (
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"os"
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"syscall"
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)
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const (
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FILE_FLAG_DELETE_ON_CLOSE = 0x04000000
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)
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// Acquire a lockfile at path.
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func AcquireLockFile(path string) os.Error {
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handle, _ := syscall.CreateFile(syscall.StringToUTF16Ptr(path), syscall.GENERIC_WRITE, 0, nil, syscall.CREATE_ALWAYS, FILE_FLAG_DELETE_ON_CLOSE, 0)
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if handle < 0 {
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return ErrLocked
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}
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return nil
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}
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// Release the lockfile at path.
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func ReleaseLockFile(path string) os.Error {
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// No-op because we use FLAG_DELETE_ON_CLOSE.
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return nil
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}
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