/
system_checks.go
79 lines (61 loc) · 1.91 KB
/
system_checks.go
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// Copyright 2020 Dolthub, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"fmt"
"os"
"github.com/dolthub/dolt/go/libraries/doltcore/env"
"github.com/dolthub/dolt/go/libraries/utils/file"
"github.com/dolthub/dolt/go/store/util/tempfiles"
)
// returns false if it fails to verify that it can move files from the default temp directory to the local directory.
func canMoveTempFile() bool {
const testfile = "./testfile"
f, err := os.CreateTemp("", "")
if err != nil {
return false
}
name := f.Name()
err = f.Close()
if err != nil {
return false
}
err = file.Rename(name, testfile)
if err != nil {
_ = file.Remove(name)
return false
}
_ = file.Remove(testfile)
return true
}
// If we cannot verify that we can move files for any reason, use a ./.dolt/tmp as the temp dir.
func reconfigIfTempFileMoveFails(dEnv *env.DoltEnv) error {
if !canMoveTempFile() {
tmpDir := "./.dolt/tmp"
if !dEnv.HasDoltDir() {
tmpDir = "./.tmp"
}
stat, err := os.Stat(tmpDir)
if err != nil {
err := os.MkdirAll(tmpDir, os.ModePerm)
if err != nil {
return fmt.Errorf("failed to create temp dir '%s': %s", tmpDir, err.Error())
}
} else if !stat.IsDir() {
return fmt.Errorf("attempting to use '%s' as a temp directory, but there exists a file with that name", tmpDir)
}
tempfiles.MovableTempFileProvider = tempfiles.NewTempFileProviderAt(tmpDir)
}
return nil
}