forgejo/modules/util/remove.go
zeripath 97381aad5d
Make cancel from CatFileBatch and CatFileBatchCheck wait for the command to end (#16479)
Fix #16427 (again!)

* handle sharing violation error code

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: Lauris BH <lauris@nix.lv>
2021-07-20 20:23:01 +03:00

106 lines
2.5 KiB
Go

// 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
}