fusefrontend: move openBackingDir into its own file

This function is in all fastpaths, will get a cache, and needs
its own file.
renamed:    internal/fusefrontend/names.go -> internal/fusefrontend/openbackingdir.go
renamed:    internal/fusefrontend/names_test.go -> internal/fusefrontend/openbackingdir_test.go

1 files changed, 0 insertions, 152 deletions

diff --git a/internal/fusefrontend/names_test.go b/internal/fusefrontend/names_test.go
deleted file mode 100644
index 8453e52..0000000
--- a/internal/fusefrontend/names_test.go
+++ /dev/null
@@ -1,152 +0,0 @@
-package fusefrontend
-
-import (
-	"strings"
-	"syscall"
-	"testing"
-
-	"golang.org/x/sys/unix"
-
-	"github.com/rfjakob/gocryptfs/internal/syscallcompat"
-	"github.com/rfjakob/gocryptfs/tests/test_helpers"
-)
-
-func TestOpenBackingDir(t *testing.T) {
-	cipherdir := test_helpers.InitFS(t)
-	args := Args{
-		Cipherdir: cipherdir,
-	}
-	fs := newTestFS(args)
-
-	code := fs.Mkdir("dir1", 0700, nil)
-	if !code.Ok() {
-		t.Fatal(code)
-	}
-	code = fs.Mkdir("dir1/dir2", 0700, nil)
-	if !code.Ok() {
-		t.Fatal(code)
-	}
-
-	dirfd, cName, err := fs.openBackingDir("")
-	if err != nil {
-		t.Fatal(err)
-	}
-	if cName != "." {
-		t.Fatal("cName should be .")
-	}
-	err = syscallcompat.Faccessat(dirfd, cName, unix.R_OK)
-	if err != nil {
-		t.Error(err)
-	}
-	err = syscallcompat.Faccessat(dirfd, ".", unix.R_OK)
-	if err != nil {
-		t.Error(err)
-	}
-	syscall.Close(dirfd)
-
-	dirfd, cName, err = fs.openBackingDir("dir1")
-	if err != nil {
-		t.Fatal(err)
-	}
-	if cName == "" {
-		t.Fatal("cName should not be empty")
-	}
-	err = syscallcompat.Faccessat(dirfd, cName, unix.R_OK)
-	if err != nil {
-		t.Error(err)
-	}
-	syscall.Close(dirfd)
-
-	dirfd, cName, err = fs.openBackingDir("dir1/dir2")
-	if err != nil {
-		t.Fatal(err)
-	}
-	if cName == "" {
-		t.Fatal("cName should not be empty")
-	}
-	err = syscallcompat.Faccessat(dirfd, cName, unix.R_OK)
-	if err != nil {
-		t.Error(err)
-	}
-	syscall.Close(dirfd)
-
-	n255 := strings.Repeat("n", 255)
-	path := "dir1/" + n255
-	fs.Mkdir(path, 0700, nil)
-	dirfd, cName, err = fs.openBackingDir(path)
-	if err != nil {
-		t.Fatal(err)
-	}
-	if cName == "" {
-		t.Fatal("cName should not be empty")
-	}
-	if len(cName) >= 255 {
-		t.Fatalf("cName is too long: %q", cName)
-	}
-	err = syscallcompat.Faccessat(dirfd, cName, unix.R_OK)
-	if err != nil {
-		t.Error(err)
-	}
-	syscall.Close(dirfd)
-}
-
-func TestOpenBackingDirPlaintextNames(t *testing.T) {
-	cipherdir := test_helpers.InitFS(t, "-plaintextnames")
-	args := Args{
-		Cipherdir:      cipherdir,
-		PlaintextNames: true,
-	}
-	fs := newTestFS(args)
-
-	code := fs.Mkdir("dir1", 0700, nil)
-	if !code.Ok() {
-		t.Fatal(code)
-	}
-	code = fs.Mkdir("dir1/dir2", 0700, nil)
-	if !code.Ok() {
-		t.Fatal(code)
-	}
-
-	dirfd, cName, err := fs.openBackingDir("")
-	if err != nil {
-		t.Fatal(err)
-	}
-	if cName != "." {
-		t.Fatal("cName should be .")
-	}
-	err = syscallcompat.Faccessat(dirfd, cName, unix.R_OK)
-	if err != nil {
-		t.Error(err)
-	}
-	err = syscallcompat.Faccessat(dirfd, ".", unix.R_OK)
-	if err != nil {
-		t.Error(err)
-	}
-	syscall.Close(dirfd)
-
-	dirfd, cName, err = fs.openBackingDir("dir1")
-	if err != nil {
-		t.Fatal(err)
-	}
-	if cName != "dir1" {
-		t.Fatalf("wrong cName: %q", cName)
-	}
-	err = syscallcompat.Faccessat(dirfd, cName, unix.R_OK)
-	if err != nil {
-		t.Error(err)
-	}
-	syscall.Close(dirfd)
-
-	dirfd, cName, err = fs.openBackingDir("dir1/dir2")
-	if err != nil {
-		t.Fatal(err)
-	}
-	if cName != "dir2" {
-		t.Fatalf("wrong cName: %q", cName)
-	}
-	err = syscallcompat.Faccessat(dirfd, cName, unix.R_OK)
-	if err != nil {
-		t.Error(err)
-	}
-	syscall.Close(dirfd)
-}