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92 lines
2.2 KiB
Go
92 lines
2.2 KiB
Go
// +build linux
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package fsutils // import "github.com/docker/docker/pkg/fsutils"
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import (
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"io/ioutil"
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"os"
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"os/exec"
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"testing"
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"golang.org/x/sys/unix"
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)
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func testSupportsDType(t *testing.T, expected bool, mkfsCommand string, mkfsArg ...string) {
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// check whether mkfs is installed
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if _, err := exec.LookPath(mkfsCommand); err != nil {
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t.Skipf("%s not installed: %v", mkfsCommand, err)
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}
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// create a sparse image
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imageSize := int64(32 * 1024 * 1024)
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imageFile, err := ioutil.TempFile("", "fsutils-image")
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if err != nil {
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t.Fatal(err)
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}
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imageFileName := imageFile.Name()
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defer os.Remove(imageFileName)
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if _, err = imageFile.Seek(imageSize-1, 0); err != nil {
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t.Fatal(err)
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}
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if _, err = imageFile.Write([]byte{0}); err != nil {
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t.Fatal(err)
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}
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if err = imageFile.Close(); err != nil {
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t.Fatal(err)
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}
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// create a mountpoint
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mountpoint, err := ioutil.TempDir("", "fsutils-mountpoint")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(mountpoint)
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// format the image
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args := append(mkfsArg, imageFileName)
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t.Logf("Executing `%s %v`", mkfsCommand, args)
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out, err := exec.Command(mkfsCommand, args...).CombinedOutput()
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if len(out) > 0 {
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t.Log(string(out))
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}
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if err != nil {
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t.Fatal(err)
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}
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// loopback-mount the image.
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// for ease of setting up loopback device, we use os/exec rather than unix.Mount
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out, err = exec.Command("mount", "-o", "loop", imageFileName, mountpoint).CombinedOutput()
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if len(out) > 0 {
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t.Log(string(out))
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}
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if err != nil {
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t.Skip("skipping the test because mount failed")
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}
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defer func() {
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if err := unix.Unmount(mountpoint, 0); err != nil {
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t.Fatal(err)
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}
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}()
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// check whether it supports d_type
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result, err := SupportsDType(mountpoint)
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if err != nil {
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t.Fatal(err)
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}
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t.Logf("Supports d_type: %v", result)
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if result != expected {
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t.Fatalf("expected %v, got %v", expected, result)
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}
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}
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func TestSupportsDTypeWithFType0XFS(t *testing.T) {
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testSupportsDType(t, false, "mkfs.xfs", "-m", "crc=0", "-n", "ftype=0")
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}
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func TestSupportsDTypeWithFType1XFS(t *testing.T) {
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testSupportsDType(t, true, "mkfs.xfs", "-m", "crc=0", "-n", "ftype=1")
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}
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func TestSupportsDTypeWithExt4(t *testing.T) {
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testSupportsDType(t, true, "mkfs.ext4")
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}
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