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