syscallcompat: OSX: add Unlinkat wrapper

Also, replace remaining naked syscall.Openat calls.

2 files changed, 5 insertions, 3 deletions

diff --git a/internal/nametransform/diriv.go b/internal/nametransform/diriv.go
index b9473aa..51af1c3 100644
--- a/internal/nametransform/diriv.go
+++ b/internal/nametransform/diriv.go
@@ -9,6 +9,7 @@ import (
 	"syscall"
 
 	"github.com/rfjakob/gocryptfs/internal/cryptocore"
+	"github.com/rfjakob/gocryptfs/internal/syscallcompat"
 	"github.com/rfjakob/gocryptfs/internal/tlog"
 )
 
@@ -35,7 +36,7 @@ func ReadDirIV(dir string) (iv []byte, err error) {
 // ReadDirIVAt reads "gocryptfs.diriv" from the directory that is opened as "dirfd".
 // Using the dirfd makes it immune to concurrent renames of the directory.
 func ReadDirIVAt(dirfd *os.File) (iv []byte, err error) {
-	fdRaw, err := syscall.Openat(int(dirfd.Fd()), DirIVFilename, syscall.O_RDONLY, 0)
+	fdRaw, err := syscallcompat.Openat(int(dirfd.Fd()), DirIVFilename, syscall.O_RDONLY, 0)
 	if err != nil {
 		tlog.Warn.Printf("ReadDirIVAt: opening %q in dir %q failed: %v",
 			DirIVFilename, dirfd.Name(), err)
diff --git a/internal/nametransform/longnames.go b/internal/nametransform/longnames.go
index 13bedb3..cf7f34c 100644
--- a/internal/nametransform/longnames.go
+++ b/internal/nametransform/longnames.go
@@ -9,6 +9,7 @@ import (
 	"strings"
 	"syscall"
 
+	"github.com/rfjakob/gocryptfs/internal/syscallcompat"
 	"github.com/rfjakob/gocryptfs/internal/tlog"
 )
 
@@ -65,7 +66,7 @@ func ReadLongName(path string) (string, error) {
 
 // DeleteLongName deletes "hashName.name".
 func DeleteLongName(dirfd *os.File, hashName string) error {
-	err := syscall.Unlinkat(int(dirfd.Fd()), hashName+LongNameSuffix)
+	err := syscallcompat.Unlinkat(int(dirfd.Fd()), hashName+LongNameSuffix)
 	if err != nil {
 		tlog.Warn.Printf("DeleteLongName: %v", err)
 	}
@@ -86,7 +87,7 @@ func (n *NameTransform) WriteLongName(dirfd *os.File, hashName string, plainName
 	cName := n.EncryptName(plainName, dirIV)
 
 	// Write the encrypted name into hashName.name
-	fdRaw, err := syscall.Openat(int(dirfd.Fd()), hashName+LongNameSuffix,
+	fdRaw, err := syscallcompat.Openat(int(dirfd.Fd()), hashName+LongNameSuffix,
 		syscall.O_WRONLY|syscall.O_CREAT|syscall.O_EXCL, 0600)
 	if err != nil {
 		tlog.Warn.Printf("WriteLongName: Openat: %v", err)