// +build linux freebsd
 
 package graphtest
 
 import (
 	"os"
 	"syscall"
 	"testing"
 

 	contdriver "github.com/containerd/continuity/driver"

 	"github.com/docker/docker/daemon/graphdriver"

 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"

 	"golang.org/x/sys/unix"

 )
 
 func verifyFile(t testing.TB, path string, mode os.FileMode, uid, gid uint32) {
 	fi, err := os.Stat(path)

 	require.NoError(t, err)

 	actual := fi.Mode()
 	assert.Equal(t, mode&os.ModeType, actual&os.ModeType, path)
 	assert.Equal(t, mode&os.ModePerm, actual&os.ModePerm, path)
 	assert.Equal(t, mode&os.ModeSticky, actual&os.ModeSticky, path)
 	assert.Equal(t, mode&os.ModeSetuid, actual&os.ModeSetuid, path)
 	assert.Equal(t, mode&os.ModeSetgid, actual&os.ModeSetgid, path)

 
 	if stat, ok := fi.Sys().(*syscall.Stat_t); ok {

 		assert.Equal(t, uid, stat.Uid, path)
 		assert.Equal(t, gid, stat.Gid, path)

 	}
 }
 
 func createBase(t testing.TB, driver graphdriver.Driver, name string) {
 	// We need to be able to set any perms

 	oldmask := unix.Umask(0)
 	defer unix.Umask(oldmask)

 	err := driver.CreateReadWrite(name, "", nil)
 	require.NoError(t, err)

 	dirFS, err := driver.Get(name, "")

 	require.NoError(t, err)

 	defer driver.Put(name)
 

 	subdir := dirFS.Join(dirFS.Path(), "a subdir")
 	require.NoError(t, dirFS.Mkdir(subdir, 0705|os.ModeSticky))
 	require.NoError(t, dirFS.Lchown(subdir, 1, 2))

 	file := dirFS.Join(dirFS.Path(), "a file")
 	err = contdriver.WriteFile(dirFS, file, []byte("Some data"), 0222|os.ModeSetuid)

 	require.NoError(t, err)

 }
 
 func verifyBase(t testing.TB, driver graphdriver.Driver, name string) {

 	dirFS, err := driver.Get(name, "")

 	require.NoError(t, err)

 	defer driver.Put(name)
 

 	subdir := dirFS.Join(dirFS.Path(), "a subdir")

 	verifyFile(t, subdir, 0705|os.ModeDir|os.ModeSticky, 1, 2)
 

 	file := dirFS.Join(dirFS.Path(), "a file")

 	verifyFile(t, file, 0222|os.ModeSetuid, 0, 0)
 

 	files, err := readDir(dirFS, dirFS.Path())

 	require.NoError(t, err)
 	assert.Len(t, files, 2)

 }