//go:build linux && rootrunner

package rootstate

import (
	"github.com/carlosframework/platform/internal/safefile"
	"os"
)

type faultStore struct {
	Store
	step func(string, string, func() error) error
}

func WithWriteFault(s Store, step func(string, string, func() error) error) Store {
	return faultStore{Store: s, step: step}
}

func (s faultStore) Write(name string, body []byte) error {
	d, ok := s.Store.(*directory)
	if !ok {
		return os.ErrPermission
	}
	return d.write(name, body, func(fd int, name string, body []byte, mode os.FileMode) error {
		return safefile.WriteAtFault(fd, name, body, mode, func(stage string, op func() error) error { return s.step(name, stage, op) })
	})
}