forked from gitea/gitea
106 lines
2.5 KiB
Go
106 lines
2.5 KiB
Go
// Copyright 2020 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package util
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import (
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"os"
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"runtime"
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"syscall"
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"time"
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)
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const windowsSharingViolationError syscall.Errno = 32
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// Remove removes the named file or (empty) directory with at most 5 attempts.
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func Remove(name string) error {
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var err error
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for i := 0; i < 5; i++ {
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err = os.Remove(name)
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if err == nil {
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break
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}
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unwrapped := err.(*os.PathError).Err
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if unwrapped == syscall.EBUSY || unwrapped == syscall.ENOTEMPTY || unwrapped == syscall.EPERM || unwrapped == syscall.EMFILE || unwrapped == syscall.ENFILE {
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// try again
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<-time.After(100 * time.Millisecond)
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continue
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}
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if unwrapped == windowsSharingViolationError && runtime.GOOS == "windows" {
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// try again
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<-time.After(100 * time.Millisecond)
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continue
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}
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if unwrapped == syscall.ENOENT {
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// it's already gone
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return nil
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}
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}
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return err
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}
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// RemoveAll removes the named file or (empty) directory with at most 5 attempts.
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func RemoveAll(name string) error {
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var err error
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for i := 0; i < 5; i++ {
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err = os.RemoveAll(name)
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if err == nil {
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break
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}
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unwrapped := err.(*os.PathError).Err
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if unwrapped == syscall.EBUSY || unwrapped == syscall.ENOTEMPTY || unwrapped == syscall.EPERM || unwrapped == syscall.EMFILE || unwrapped == syscall.ENFILE {
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// try again
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<-time.After(100 * time.Millisecond)
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continue
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}
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if unwrapped == windowsSharingViolationError && runtime.GOOS == "windows" {
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// try again
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<-time.After(100 * time.Millisecond)
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continue
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}
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if unwrapped == syscall.ENOENT {
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// it's already gone
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return nil
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}
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}
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return err
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}
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// Rename renames (moves) oldpath to newpath with at most 5 attempts.
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func Rename(oldpath, newpath string) error {
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var err error
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for i := 0; i < 5; i++ {
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err = os.Rename(oldpath, newpath)
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if err == nil {
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break
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}
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unwrapped := err.(*os.LinkError).Err
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if unwrapped == syscall.EBUSY || unwrapped == syscall.ENOTEMPTY || unwrapped == syscall.EPERM || unwrapped == syscall.EMFILE || unwrapped == syscall.ENFILE {
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// try again
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<-time.After(100 * time.Millisecond)
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continue
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}
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if unwrapped == windowsSharingViolationError && runtime.GOOS == "windows" {
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// try again
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<-time.After(100 * time.Millisecond)
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continue
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}
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if i == 0 && os.IsNotExist(err) {
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return err
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}
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if unwrapped == syscall.ENOENT {
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// it's already gone
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return nil
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}
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}
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return err
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}
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