NNCPNOSYNC environment variable

[nncp.git] / src / tmp.go

diff --git a/src/tmp.go b/src/tmp.go
index 7b9ded1b6220450a61aa0d2b301caf7b11842ce9..4a43eaa41a2675969f0d7109fe362f5304c93866 100644 (file)
--- a/src/tmp.go
+++ b/src/tmp.go
@@ -1,6 +1,6 @@
 /*
 NNCP -- Node to Node copy, utilities for store-and-forward data exchange
-Copyright (C) 2016-2021 Sergey Matveev <stargrave@stargrave.org>
+Copyright (C) 2016-2022 Sergey Matveev <stargrave@stargrave.org>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -28,6 +28,12 @@ import (
        "time"
 )
 
+var NoSync bool
+
+func init() {
+       NoSync = os.Getenv(CfgNoSync) != ""
+}
+
 func TempFile(dir, prefix string) (*os.File, error) {
        // Assume that probability of suffix collision is negligible
        suffix := strconv.FormatInt(time.Now().UnixNano()+int64(os.Getpid()), 16)
@@ -37,7 +43,7 @@ func TempFile(dir, prefix string) (*os.File, error) {
 
 func (ctx *Ctx) NewTmpFile() (*os.File, error) {
        jobsPath := filepath.Join(ctx.Spool, "tmp")
-       if err := os.MkdirAll(jobsPath, os.FileMode(0777)); err != nil {
+       if err := ensureDir(jobsPath); err != nil {
                return nil, err
        }
        fd, err := TempFile(jobsPath, "")
@@ -77,6 +83,9 @@ func (tmp *TmpFileWHash) Cancel() {
 }
 
 func DirSync(dirPath string) error {
+       if NoSync {
+               return nil
+       }
        fd, err := os.Open(dirPath)
        if err != nil {
                return err
@@ -95,16 +104,18 @@ func (tmp *TmpFileWHash) Checksum() string {
 
 func (tmp *TmpFileWHash) Commit(dir string) error {
        var err error
-       if err = os.MkdirAll(dir, os.FileMode(0777)); err != nil {
+       if err = ensureDir(dir); err != nil {
                return err
        }
        if err = tmp.W.Flush(); err != nil {
                tmp.Fd.Close()
                return err
        }
-       if err = tmp.Fd.Sync(); err != nil {
-               tmp.Fd.Close()
-               return err
+       if !NoSync {
+               if err = tmp.Fd.Sync(); err != nil {
+                       tmp.Fd.Close()
+                       return err
+               }
        }
        if err = tmp.Fd.Close(); err != nil {
                return err