Merge pull request moby#4878 from kzys/freebsd-utimes

Support FreeBSD on pkg/system/utimes_*.go

hack/make.sh

@@ -107,6 +107,16 @@ LDFLAGS_STATIC_DOCKER="
 	-extldflags \"$EXTLDFLAGS_STATIC_DOCKER\"
 "
 
+if [ "$(uname -s)" = 'FreeBSD' ]; then
+	# Tell cgo the compiler is Clang, not GCC
+	# https://code.google.com/p/go/source/browse/src/cmd/cgo/gcc.go?spec=svne77e74371f2340ee08622ce602e9f7b15f29d8d3&r=e6794866ebeba2bf8818b9261b54e2eef1c9e588#752
+	export CC=clang
+
+	# "-extld clang" is a workaround for
+	# https://code.google.com/p/go/issues/detail?id=6845
+	LDFLAGS="$LDFLAGS -extld clang"
+fi
+
 HAVE_GO_TEST_COVER=
 if \
 	go help testflag | grep -- -cover > /dev/null \
@@ -142,7 +152,7 @@ go_test_dir() {
 # holding certain files ($1 parameter), and prints their paths on standard
 # output, one per line.
 find_dirs() {
-	find -not \( \
+	find . -not \( \
 		\( \
 			-wholename './vendor' \
 			-o -wholename './integration' \

pkg/system/utimes_freebsd.go

@@ -0,0 +1,24 @@
+package system
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+func LUtimesNano(path string, ts []syscall.Timespec) error {
+	var _path *byte
+	_path, err := syscall.BytePtrFromString(path)
+	if err != nil {
+		return err
+	}
+
+	if _, _, err := syscall.Syscall(syscall.SYS_LUTIMES, uintptr(unsafe.Pointer(_path)), uintptr(unsafe.Pointer(&ts[0])), 0); err != 0 && err != syscall.ENOSYS {
+		return err
+	}
+
+	return nil
+}
+
+func UtimesNano(path string, ts []syscall.Timespec) error {
+	return syscall.UtimesNano(path, ts)
+}

pkg/system/utimes_test.go

@@ -0,0 +1,64 @@
+package system
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"syscall"
+	"testing"
+)
+
+func prepareFiles(t *testing.T) (string, string, string) {
+	dir, err := ioutil.TempDir("", "docker-system-test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	file := filepath.Join(dir, "exist")
+	if err := ioutil.WriteFile(file, []byte("hello"), 0644); err != nil {
+		t.Fatal(err)
+	}
+
+	invalid := filepath.Join(dir, "doesnt-exist")
+
+	symlink := filepath.Join(dir, "symlink")
+	if err := os.Symlink(file, symlink); err != nil {
+		t.Fatal(err)
+	}
+
+	return file, invalid, symlink
+}
+
+func TestLUtimesNano(t *testing.T) {
+	file, invalid, symlink := prepareFiles(t)
+
+	before, err := os.Stat(file)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	ts := []syscall.Timespec{{0, 0}, {0, 0}}
+	if err := LUtimesNano(symlink, ts); err != nil {
+		t.Fatal(err)
+	}
+
+	symlinkInfo, err := os.Lstat(symlink)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if before.ModTime().Unix() == symlinkInfo.ModTime().Unix() {
+		t.Fatal("The modification time of the symlink should be different")
+	}
+
+	fileInfo, err := os.Stat(file)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if before.ModTime().Unix() != fileInfo.ModTime().Unix() {
+		t.Fatal("The modification time of the file should be same")
+	}
+
+	if err := LUtimesNano(invalid, ts); err == nil {
+		t.Fatal("Doesn't return an error on a non-existing file")
+	}
+}

pkg/system/utimes_unsupported.go

@@ -1,4 +1,4 @@
-// +build !linux
+// +build !linux,!freebsd
 
 package system