open-nomad/client/lib/cgutil/editor.go
2023-04-10 15:36:59 +00:00

31 lines
615 B
Go

// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
//go:build linux
package cgutil
import (
"os"
"path/filepath"
"strings"
)
// editor provides a simple mechanism for reading and writing cgroup files.
type editor struct {
fromRoot string
}
func (e *editor) path(file string) string {
return filepath.Join(CgroupRoot, e.fromRoot, file)
}
func (e *editor) write(file, content string) error {
return os.WriteFile(e.path(file), []byte(content), 0o644)
}
func (e *editor) read(file string) (string, error) {
b, err := os.ReadFile(e.path(file))
return strings.TrimSpace(string(b)), err
}