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// +build linux
package copy // import "github.com/docker/docker/daemon/graphdriver/copy"
import (
"fmt"
"io/ioutil"
"math/rand"
"os"
"path/filepath"
"syscall"
"testing"
"time"
"github.com/docker/docker/pkg/system"
"golang.org/x/sys/unix"
"gotest.tools/assert"
is "gotest.tools/assert/cmp"
)
func TestCopy(t *testing.T) {
copyWithFileRange := true
copyWithFileClone := true
doCopyTest(t, ©WithFileRange, ©WithFileClone)
}
func TestCopyWithoutRange(t *testing.T) {
copyWithFileRange := false
copyWithFileClone := false
doCopyTest(t, ©WithFileRange, ©WithFileClone)
}
func TestCopyDir(t *testing.T) {
srcDir, err := ioutil.TempDir("", "srcDir")
assert.NilError(t, err)
populateSrcDir(t, srcDir, 3)
dstDir, err := ioutil.TempDir("", "testdst")
assert.NilError(t, err)
defer os.RemoveAll(dstDir)
assert.Check(t, DirCopy(srcDir, dstDir, Content, false))
assert.NilError(t, filepath.Walk(srcDir, func(srcPath string, f os.FileInfo, err error) error {
if err != nil {
return err
}
// Rebase path
relPath, err := filepath.Rel(srcDir, srcPath)
assert.NilError(t, err)
if relPath == "." {
return nil
}
dstPath := filepath.Join(dstDir, relPath)
assert.NilError(t, err)
// If we add non-regular dirs and files to the test
// then we need to add more checks here.
dstFileInfo, err := os.Lstat(dstPath)
assert.NilError(t, err)
srcFileSys := f.Sys().(*syscall.Stat_t)
dstFileSys := dstFileInfo.Sys().(*syscall.Stat_t)
t.Log(relPath)
if srcFileSys.Dev == dstFileSys.Dev {
assert.Check(t, srcFileSys.Ino != dstFileSys.Ino)
}
// Todo: check size, and ctim is not equal on filesystems that have granular ctimes
assert.Check(t, is.DeepEqual(srcFileSys.Mode, dstFileSys.Mode))
assert.Check(t, is.DeepEqual(srcFileSys.Uid, dstFileSys.Uid))
assert.Check(t, is.DeepEqual(srcFileSys.Gid, dstFileSys.Gid))
assert.Check(t, is.DeepEqual(srcFileSys.Mtim, dstFileSys.Mtim))
return nil
}))
}
func randomMode(baseMode int) os.FileMode {
for i := 0; i < 7; i++ {
baseMode = baseMode | (1&rand.Intn(2))<<uint(i)
}
return os.FileMode(baseMode)
}
func populateSrcDir(t *testing.T, srcDir string, remainingDepth int) {
if remainingDepth == 0 {
return
}
aTime := time.Unix(rand.Int63(), 0)
mTime := time.Unix(rand.Int63(), 0)
for i := 0; i < 10; i++ {
dirName := filepath.Join(srcDir, fmt.Sprintf("srcdir-%d", i))
// Owner all bits set
assert.NilError(t, os.Mkdir(dirName, randomMode(0700)))
populateSrcDir(t, dirName, remainingDepth-1)
assert.NilError(t, system.Chtimes(dirName, aTime, mTime))
}
for i := 0; i < 10; i++ {
fileName := filepath.Join(srcDir, fmt.Sprintf("srcfile-%d", i))
// Owner read bit set
assert.NilError(t, ioutil.WriteFile(fileName, []byte{}, randomMode(0400)))
assert.NilError(t, system.Chtimes(fileName, aTime, mTime))
}
}
func doCopyTest(t *testing.T, copyWithFileRange, copyWithFileClone *bool) {
dir, err := ioutil.TempDir("", "docker-copy-check")
assert.NilError(t, err)
defer os.RemoveAll(dir)
srcFilename := filepath.Join(dir, "srcFilename")
dstFilename := filepath.Join(dir, "dstilename")
r := rand.New(rand.NewSource(0))
buf := make([]byte, 1024)
_, err = r.Read(buf)
assert.NilError(t, err)
assert.NilError(t, ioutil.WriteFile(srcFilename, buf, 0777))
fileinfo, err := os.Stat(srcFilename)
assert.NilError(t, err)
assert.NilError(t, copyRegular(srcFilename, dstFilename, fileinfo, copyWithFileRange, copyWithFileClone))
readBuf, err := ioutil.ReadFile(dstFilename)
assert.NilError(t, err)
assert.Check(t, is.DeepEqual(buf, readBuf))
}
func TestCopyHardlink(t *testing.T) {
var srcFile1FileInfo, srcFile2FileInfo, dstFile1FileInfo, dstFile2FileInfo unix.Stat_t
srcDir, err := ioutil.TempDir("", "srcDir")
assert.NilError(t, err)
defer os.RemoveAll(srcDir)
dstDir, err := ioutil.TempDir("", "dstDir")
assert.NilError(t, err)
defer os.RemoveAll(dstDir)
srcFile1 := filepath.Join(srcDir, "file1")
srcFile2 := filepath.Join(srcDir, "file2")
dstFile1 := filepath.Join(dstDir, "file1")
dstFile2 := filepath.Join(dstDir, "file2")
assert.NilError(t, ioutil.WriteFile(srcFile1, []byte{}, 0777))
assert.NilError(t, os.Link(srcFile1, srcFile2))
assert.Check(t, DirCopy(srcDir, dstDir, Content, false))
assert.NilError(t, unix.Stat(srcFile1, &srcFile1FileInfo))
assert.NilError(t, unix.Stat(srcFile2, &srcFile2FileInfo))
assert.Equal(t, srcFile1FileInfo.Ino, srcFile2FileInfo.Ino)
assert.NilError(t, unix.Stat(dstFile1, &dstFile1FileInfo))
assert.NilError(t, unix.Stat(dstFile2, &dstFile2FileInfo))
assert.Check(t, is.Equal(dstFile1FileInfo.Ino, dstFile2FileInfo.Ino))
}
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