86 lines
2.2 KiB
Go
86 lines
2.2 KiB
Go
/*
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* Copyright (c) 2015 Alex Yatskov <alex@foosoft.net>
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* Author: Alex Yatskov <alex@foosoft.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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package main
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import (
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"errors"
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"fmt"
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"io"
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"os"
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"regexp"
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"strconv"
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"sync/atomic"
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"time"
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"bazil.org/fuse"
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)
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var inodeCnt, handleCnt uint64
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func allocInode() uint64 {
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return atomic.AddUint64(&inodeCnt, 1)
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}
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func allocHandleId() fuse.HandleID {
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return fuse.HandleID(atomic.AddUint64(&handleCnt, 1))
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}
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func copyFile(src, dst string) (int64, error) {
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srcFile, err := os.Open(src)
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if err != nil {
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return 0, err
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}
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defer srcFile.Close()
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dstFile, err := os.Create(dst)
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if err != nil {
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return 0, err
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}
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defer dstFile.Close()
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return io.Copy(srcFile, dstFile)
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}
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func buildVerName(timestamp time.Time) string {
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return fmt.Sprintf("ver_%.16x", timestamp.Unix())
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}
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func parseVerName(name string) (time.Time, error) {
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re, err := regexp.Compile(`ver_([0-9a-f]+)$`)
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if err != nil {
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return time.Unix(0, 0), err
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}
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matches := re.FindStringSubmatch(name)
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if len(matches) < 2 {
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return time.Unix(0, 0), errors.New("invalid version identifier")
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}
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timestamp, err := strconv.ParseInt(matches[1], 16, 64)
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if err != nil {
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return time.Unix(0, 0), err
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}
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return time.Unix(timestamp, 0), nil
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}
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