Used new error conversion routine

Some of these aren't ideal..

internal/fusefs/fuse.go

@@ -126,8 +126,7 @@ func (n *ITNode) Readdir(ctx context.Context) (fs.DirStream, syscall.Errno) {
 		files, err := myfs.ReadDir(n.path)
 		if err != nil {
 			log.Error("FUSE ReadDir failed").Str("path", n.path).Err(err).Send()
-			// TODO we probably should figure out why it failed
-			return nil, syscall.ENOENT
+			return nil, syscallErr(err)
 		}
 
 		log.Debug("FUSE ReadDir succeeded").Str("path", n.path).Int("objects", len(files)).Send()
@@ -137,7 +136,7 @@ func (n *ITNode) Readdir(ctx context.Context) (fs.DirStream, syscall.Errno) {
 			info, err := entry.Info()
 			if err != nil {
 				log.Error("FUSE Info failed").Str("path", n.path).Err(err).Send()
-				return nil, syscall.ENOENT
+				return nil, syscallErr(err)
 			}
 			name := info.Name()
 
@@ -307,7 +306,7 @@ func (fh *bytesFileWriteHandle) Flush(ctx context.Context) (errno syscall.Errno)
 	fp, err := myfs.Create(fh.path, uint32(len(fh.content)))
 	if err != nil {
 		log.Error("FUSE Flush failed: create").Str("path", fh.path).Err(err).Send()
-		return syscall.EROFS
+		return syscallErr(err)
 	}
 
 	go func() {
@@ -322,7 +321,7 @@ func (fh *bytesFileWriteHandle) Flush(ctx context.Context) (errno syscall.Errno)
 	if err != nil {
 		log.Error("FUSE Flush failed during write").Str("path", fh.path).Err(err).Send()
 		fp.Close()
-		return syscall.EIO
+		return syscallErr(err)
 	}
 	if int(nread) != len(fh.content) {
 		log.Error("FUSE Flush failed during write").Str("path", fh.path).Int("expect", len(fh.content)).Int("got", int(nread)).Send()
@@ -332,7 +331,7 @@ func (fh *bytesFileWriteHandle) Flush(ctx context.Context) (errno syscall.Errno)
 	err = fp.Close()
 	if err != nil {
 		log.Error("FUSE Flush failed during close").Str("path", fh.path).Err(err).Send()
-		return syscall.EIO
+		return syscallErr(err)
 	}
 	log.Debug("FUSE Flush done").Str("path", fh.path).Int("size", len(fh.content)).Send()
 
@@ -383,9 +382,8 @@ func (f *ITNode) Open(ctx context.Context, openFlags uint32) (fh fs.FileHandle,
 			log.Debug("FUSE Opening for read").Str("path", f.path).Send()
 			fp, err := myfs.Open(f.path)
 			if err != nil {
-				// TODO we probably should figure out why it failed
 				log.Error("FUSE: Opening failed").Str("path", f.path).Err(err).Send()
-				return nil, 0, syscall.EROFS
+				return nil, 0, syscallErr(err)
 			}
 
 			defer fp.Close()
@@ -403,7 +401,7 @@ func (f *ITNode) Open(ctx context.Context, openFlags uint32) (fh fs.FileHandle,
 			if err != nil {
 				log.Error("FUSE Read failed").Str("path", f.path).Err(err).Send()
 				fp.Close()
-				return nil, 0, syscall.EIO
+				return nil, 0, syscallErr(err)
 			}
 
 			fh = &bytesFileReadHandle{
@@ -425,8 +423,7 @@ func (f *ITNode) Open(ctx context.Context, openFlags uint32) (fh fs.FileHandle,
 				sub_ctx, cancel := context.WithCancel(ctx)
 				ans, err := value.gen(sub_ctx)
 				if err != nil {
-					// TODO we probably should figure out why it failed
-					return nil, 0, syscall.EIO
+					return nil, 0, syscallErr(err)
 				}
 
 				fh = &sensorFileReadHandle{
@@ -484,8 +481,7 @@ func (f *ITNode) Mkdir(ctx context.Context, name string, mode uint32, out *fuse.
 			Str("path", path).
 			Err(err).
 			Send()
-		// TODO we probably should figure out why it failed
-		return nil, syscall.EROFS
+		return nil, syscallErr(err)
 	}
 
 	ino := uint64(len(inodemap)) + 11
@@ -525,8 +521,7 @@ func (f *ITNode) Rename(ctx context.Context, name string, newParent fs.InodeEmbe
 			Err(err).
 			Send()
 
-		// TODO we probably should figure out why it failed
-		return syscall.EIO
+		return syscallErr(err)
 	}
 	log.Debug("FUSE Rename sucess").
 		Str("src", p1).
@@ -554,8 +549,7 @@ func (f *ITNode) Unlink(ctx context.Context, name string) syscall.Errno {
 			Err(err).
 			Send()
 
-		// TODO we probably should figure out why it failed
-		return syscall.EIO
+		return syscallErr(err)
 	}
 
 	log.Debug("FUSE Unlink success").

internal/fusefs/syscallerr.go

@@ -0,0 +1,67 @@
+package fusefs
+import (
+	"go.arsenm.dev/infinitime/blefs"
+	"syscall"
+)
+
+func syscallErr(err error) syscall.Errno {
+	if err == nil {
+		return 0
+	}
+
+	switch err {
+	case blefs.FSError{0x02}: // filesystem error
+		return syscall.EIO // TODO
+	case blefs.FSError{0x05}: // read-only filesystem
+		return syscall.EROFS
+	case blefs.FSError{0x03}: // no such file
+		return syscall.ENOENT
+	case blefs.FSError{0x04}: // protocol error
+		return syscall.EPROTO
+	case blefs.FSError{-5}: // input/output error
+		return syscall.EIO
+	case blefs.FSError{-84}: // filesystem is corrupted
+		return syscall.ENOTRECOVERABLE // TODO
+	case blefs.FSError{-2}: // no such directory entry
+		return syscall.ENOENT
+	case blefs.FSError{-17}: // entry already exists
+		return syscall.EEXIST
+	case blefs.FSError{-20}: // entry is not a directory
+		return syscall.ENOTDIR
+	case blefs.FSError{-39}: // directory is not empty
+		return syscall.ENOTEMPTY
+	case blefs.FSError{-9}: // bad file number
+		return syscall.EBADF
+	case blefs.FSError{-27}: // file is too large
+		return syscall.EFBIG
+	case blefs.FSError{-22}: // invalid parameter
+		return syscall.EINVAL
+	case blefs.FSError{-28}: // no space left on device
+		return syscall.ENOSPC
+	case blefs.FSError{-12}: // no more memory available
+		return syscall.ENOMEM
+	case blefs.FSError{-61}: // no attr available
+		return syscall.ENODATA // TODO
+	case blefs.FSError{-36}: // file name is too long
+		return syscall.ENAMETOOLONG
+	case blefs.ErrFileNotExists: // file does not exist
+		return syscall.ENOENT
+	case blefs.ErrFileReadOnly: // file is read only
+		return syscall.EACCES
+	case blefs.ErrFileWriteOnly: // file is write only
+		return syscall.EACCES
+	case blefs.ErrInvalidOffset: // invalid file offset
+		return syscall.EFAULT  // TODO
+	case blefs.ErrOffsetChanged: // offset has already been changed
+		return syscall.ESPIPE
+	case blefs.ErrReadOpen: // only one file can be opened for reading at a time
+		return syscall.ENFILE
+	case blefs.ErrWriteOpen: // only one file can be opened for writing at a time
+		return syscall.ENFILE
+	case blefs.ErrNoRemoveRoot: // refusing to remove root directory
+		return syscall.EPERM
+	}
+
+	return syscall.EIO // TODO
+
+}