integration test added

src/cmds/restic/integration_helpers_test.go

@@ -15,6 +15,7 @@ import (
 type dirEntry struct {
 	path string
 	fi   os.FileInfo
+	link uint64
 }
 
 func walkDir(dir string) <-chan *dirEntry {
@@ -32,10 +33,16 @@ func walkDir(dir string) <-chan *dirEntry {
 				fmt.Fprintf(os.Stderr, "error: %v\n", err)
 				return nil
 			}
-
+			
+			stat, err := toStatT(info.Sys())
+			if !err {
+				return nil
+			}
+			
 			ch <- &dirEntry{
 				path: name,
 				fi:   info,
+				link: stat.nlink(),
 			}
 
 			return nil

src/cmds/restic/integration_test.go

@@ -1011,3 +1011,42 @@ func TestPrune(t *testing.T) {
 		testRunCheck(t, gopts)
 	})
 }
+
+func TestHardLink(t *testing.T) {
+	withTestEnvironment(t, func(env *testEnvironment, gopts GlobalOptions) {
+		datafile := filepath.Join("testdata", "test.hl.tar.gz")
+		fd, err := os.Open(datafile)
+		if os.IsNotExist(errors.Cause(err)) {
+			t.Skipf("unable to find data file %q, skipping", datafile)
+			return
+		}
+		OK(t, err)
+		OK(t, fd.Close())
+
+		testRunInit(t, gopts)
+
+		SetupTarTestFixture(t, env.testdata, datafile)
+		opts := BackupOptions{}
+
+		// first backup
+		testRunBackup(t, []string{env.testdata}, opts, gopts)
+		snapshotIDs := testRunList(t, "snapshots", gopts)
+		Assert(t, len(snapshotIDs) == 1,
+			"expected one snapshot, got %v", snapshotIDs)
+
+		testRunCheck(t, gopts)
+		stat1 := dirStats(env.repo)
+
+		// restore all backups and compare
+		for i, snapshotID := range snapshotIDs {
+			restoredir := filepath.Join(env.base, fmt.Sprintf("restore%d", i))
+			t.Logf("restoring snapshot %v to %v", snapshotID.Str(), restoredir)
+			testRunRestore(t, gopts, restoredir, snapshotIDs[0])
+			Assert(t, directoriesEqualContents(env.testdata, filepath.Join(restoredir, "testdata")),
+				"directories are not equal")
+		}
+
+		testRunCheck(t, gopts)
+	})
+}
+

src/restic/node.go

@@ -495,7 +495,6 @@ func (node *Node) fillExtra(path string, fi os.FileInfo) error {
 		node.Size = uint64(stat.size())
 		node.Links = uint64(stat.nlink())
 	case "dir":
-		node.Links = uint64(stat.nlink())
 	case "symlink":
 		node.LinkTarget, err = fs.Readlink(path)
 		node.Links = uint64(stat.nlink())