| // +build !windows |
| |
| package archive |
| |
| import ( |
| "bytes" |
| "fmt" |
| "io/ioutil" |
| "os" |
| "path/filepath" |
| "runtime" |
| "syscall" |
| "testing" |
| |
| "github.com/docker/docker/pkg/system" |
| ) |
| |
| func TestCanonicalTarNameForPath(t *testing.T) { |
| cases := []struct{ in, expected string }{ |
| {"foo", "foo"}, |
| {"foo/bar", "foo/bar"}, |
| {"foo/dir/", "foo/dir/"}, |
| } |
| for _, v := range cases { |
| if out, err := CanonicalTarNameForPath(v.in); err != nil { |
| t.Fatalf("cannot get canonical name for path: %s: %v", v.in, err) |
| } else if out != v.expected { |
| t.Fatalf("wrong canonical tar name. expected:%s got:%s", v.expected, out) |
| } |
| } |
| } |
| |
| func TestCanonicalTarName(t *testing.T) { |
| cases := []struct { |
| in string |
| isDir bool |
| expected string |
| }{ |
| {"foo", false, "foo"}, |
| {"foo", true, "foo/"}, |
| {"foo/bar", false, "foo/bar"}, |
| {"foo/bar", true, "foo/bar/"}, |
| } |
| for _, v := range cases { |
| if out, err := canonicalTarName(v.in, v.isDir); err != nil { |
| t.Fatalf("cannot get canonical name for path: %s: %v", v.in, err) |
| } else if out != v.expected { |
| t.Fatalf("wrong canonical tar name. expected:%s got:%s", v.expected, out) |
| } |
| } |
| } |
| |
| func TestChmodTarEntry(t *testing.T) { |
| cases := []struct { |
| in, expected os.FileMode |
| }{ |
| {0000, 0000}, |
| {0777, 0777}, |
| {0644, 0644}, |
| {0755, 0755}, |
| {0444, 0444}, |
| } |
| for _, v := range cases { |
| if out := chmodTarEntry(v.in); out != v.expected { |
| t.Fatalf("wrong chmod. expected:%v got:%v", v.expected, out) |
| } |
| } |
| } |
| |
| func TestTarWithHardLink(t *testing.T) { |
| origin, err := ioutil.TempDir("", "docker-test-tar-hardlink") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer os.RemoveAll(origin) |
| if err := ioutil.WriteFile(filepath.Join(origin, "1"), []byte("hello world"), 0700); err != nil { |
| t.Fatal(err) |
| } |
| if err := os.Link(filepath.Join(origin, "1"), filepath.Join(origin, "2")); err != nil { |
| t.Fatal(err) |
| } |
| |
| var i1, i2 uint64 |
| if i1, err = getNlink(filepath.Join(origin, "1")); err != nil { |
| t.Fatal(err) |
| } |
| // sanity check that we can hardlink |
| if i1 != 2 { |
| t.Skipf("skipping since hardlinks don't work here; expected 2 links, got %d", i1) |
| } |
| |
| dest, err := ioutil.TempDir("", "docker-test-tar-hardlink-dest") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer os.RemoveAll(dest) |
| |
| // we'll do this in two steps to separate failure |
| fh, err := Tar(origin, Uncompressed) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| // ensure we can read the whole thing with no error, before writing back out |
| buf, err := ioutil.ReadAll(fh) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| bRdr := bytes.NewReader(buf) |
| err = Untar(bRdr, dest, &TarOptions{Compression: Uncompressed}) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| if i1, err = getInode(filepath.Join(dest, "1")); err != nil { |
| t.Fatal(err) |
| } |
| if i2, err = getInode(filepath.Join(dest, "2")); err != nil { |
| t.Fatal(err) |
| } |
| |
| if i1 != i2 { |
| t.Errorf("expected matching inodes, but got %d and %d", i1, i2) |
| } |
| } |
| |
| func getNlink(path string) (uint64, error) { |
| stat, err := os.Stat(path) |
| if err != nil { |
| return 0, err |
| } |
| statT, ok := stat.Sys().(*syscall.Stat_t) |
| if !ok { |
| return 0, fmt.Errorf("expected type *syscall.Stat_t, got %t", stat.Sys()) |
| } |
| // We need this conversion on ARM64 |
| return uint64(statT.Nlink), nil |
| } |
| |
| func getInode(path string) (uint64, error) { |
| stat, err := os.Stat(path) |
| if err != nil { |
| return 0, err |
| } |
| statT, ok := stat.Sys().(*syscall.Stat_t) |
| if !ok { |
| return 0, fmt.Errorf("expected type *syscall.Stat_t, got %t", stat.Sys()) |
| } |
| return statT.Ino, nil |
| } |
| |
| func TestTarWithBlockCharFifo(t *testing.T) { |
| origin, err := ioutil.TempDir("", "docker-test-tar-hardlink") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer os.RemoveAll(origin) |
| if err := ioutil.WriteFile(filepath.Join(origin, "1"), []byte("hello world"), 0700); err != nil { |
| t.Fatal(err) |
| } |
| if err := system.Mknod(filepath.Join(origin, "2"), syscall.S_IFBLK, int(system.Mkdev(int64(12), int64(5)))); err != nil { |
| t.Fatal(err) |
| } |
| if err := system.Mknod(filepath.Join(origin, "3"), syscall.S_IFCHR, int(system.Mkdev(int64(12), int64(5)))); err != nil { |
| t.Fatal(err) |
| } |
| if err := system.Mknod(filepath.Join(origin, "4"), syscall.S_IFIFO, int(system.Mkdev(int64(12), int64(5)))); err != nil { |
| t.Fatal(err) |
| } |
| |
| dest, err := ioutil.TempDir("", "docker-test-tar-hardlink-dest") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer os.RemoveAll(dest) |
| |
| // we'll do this in two steps to separate failure |
| fh, err := Tar(origin, Uncompressed) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| // ensure we can read the whole thing with no error, before writing back out |
| buf, err := ioutil.ReadAll(fh) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| bRdr := bytes.NewReader(buf) |
| err = Untar(bRdr, dest, &TarOptions{Compression: Uncompressed}) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| changes, err := ChangesDirs(origin, dest) |
| if err != nil { |
| t.Fatal(err) |
| } |
| if len(changes) > 0 { |
| t.Fatalf("Tar with special device (block, char, fifo) should keep them (recreate them when untar) : %v", changes) |
| } |
| } |
| |
| // TestTarUntarWithXattr is Unix as Lsetxattr is not supported on Windows |
| func TestTarUntarWithXattr(t *testing.T) { |
| if runtime.GOOS == "solaris" { |
| t.Skip() |
| } |
| origin, err := ioutil.TempDir("", "docker-test-untar-origin") |
| if err != nil { |
| t.Fatal(err) |
| } |
| defer os.RemoveAll(origin) |
| if err := ioutil.WriteFile(filepath.Join(origin, "1"), []byte("hello world"), 0700); err != nil { |
| t.Fatal(err) |
| } |
| if err := ioutil.WriteFile(filepath.Join(origin, "2"), []byte("welcome!"), 0700); err != nil { |
| t.Fatal(err) |
| } |
| if err := ioutil.WriteFile(filepath.Join(origin, "3"), []byte("will be ignored"), 0700); err != nil { |
| t.Fatal(err) |
| } |
| if err := system.Lsetxattr(filepath.Join(origin, "2"), "security.capability", []byte{0x00}, 0); err != nil { |
| t.Fatal(err) |
| } |
| |
| for _, c := range []Compression{ |
| Uncompressed, |
| Gzip, |
| } { |
| changes, err := tarUntar(t, origin, &TarOptions{ |
| Compression: c, |
| ExcludePatterns: []string{"3"}, |
| }) |
| |
| if err != nil { |
| t.Fatalf("Error tar/untar for compression %s: %s", c.Extension(), err) |
| } |
| |
| if len(changes) != 1 || changes[0].Path != "/3" { |
| t.Fatalf("Unexpected differences after tarUntar: %v", changes) |
| } |
| capability, _ := system.Lgetxattr(filepath.Join(origin, "2"), "security.capability") |
| if capability == nil && capability[0] != 0x00 { |
| t.Fatalf("Untar should have kept the 'security.capability' xattr.") |
| } |
| } |
| } |