diff --git a/app/api/api.go b/app/api/api.go
index 8937b74e..457a5e9a 100644
--- a/app/api/api.go
+++ b/app/api/api.go
@@ -476,6 +476,12 @@ func (a *api) start() error {
 		return fmt.Errorf("disk filesystem: %w", err)
 	}
 
+	if diskfsRoot, err := filepath.Abs(cfg.Storage.Disk.Dir); err != nil {
+		return err
+	} else {
+		diskfs.SetMetadata("base", diskfsRoot)
+	}
+
 	a.diskfs = diskfs
 
 	baseMemFS := url.URL{
diff --git a/http/server.go b/http/server.go
index 3cdd7a5d..cbc7f69f 100644
--- a/http/server.go
+++ b/http/server.go
@@ -155,7 +155,8 @@ type server struct {
 type filesystem struct {
 	fs.FS
 
-	handler *handler.FSHandler
+	handler    *handler.FSHandler
+	middleware echo.MiddlewareFunc
 }
 
 func NewServer(config Config) (Server, error) {
@@ -196,13 +197,13 @@ func NewServer(config Config) (Server, error) {
 			handler: handler.NewFS(fs),
 		}
 
-		s.filesystems[filesystem.Name] = filesystem
-
 		if fs.Filesystem.Type() == "disk" {
-			s.middleware.hlsrewrite = mwhlsrewrite.NewHLSRewriteWithConfig(mwhlsrewrite.HLSRewriteConfig{
+			filesystem.middleware = mwhlsrewrite.NewHLSRewriteWithConfig(mwhlsrewrite.HLSRewriteConfig{
 				PathPrefix: fs.Filesystem.Metadata("base"),
 			})
 		}
+
+		s.filesystems[filesystem.Name] = filesystem
 	}
 
 	if _, ok := corsPrefixes["/"]; !ok {
@@ -461,6 +462,14 @@ func (s *server) setRoutes() {
 			fs.Use(mwcache)
 		}
 
+		if filesystem.middleware != nil {
+			fs.Use(filesystem.middleware)
+		}
+
+		if s.middleware.session != nil {
+			fs.Use(s.middleware.session)
+		}
+
 		fs.GET("", filesystem.handler.GetFile)
 		fs.HEAD("", filesystem.handler.GetFile)
 
diff --git a/io/fs/fs.go b/io/fs/fs.go
index f7b990b3..d8b8553b 100644
--- a/io/fs/fs.go
+++ b/io/fs/fs.go
@@ -43,8 +43,8 @@ type File interface {
 }
 
 type ReadFilesystem interface {
-	// Size returns the consumed size and capacity of the filesystem in bytes. If the
-	// capacity is 0 or smaller if the filesystem can consume as much space as it wants.
+	// Size returns the consumed size and capacity of the filesystem in bytes. The
+	// capacity is zero or negative if the filesystem can consume as much space as it wants.
 	Size() (int64, int64)
 
 	// Files returns the current number of files in the filesystem.
diff --git a/io/fs/sized.go b/io/fs/sized.go
index e97bcbb8..366ef6f5 100644
--- a/io/fs/sized.go
+++ b/io/fs/sized.go
@@ -22,7 +22,7 @@ type PurgeFilesystem interface {
 type sizedFilesystem struct {
 	Filesystem
 
-	// Siez is the capacity of the filesystem in bytes
+	// Size is the capacity of the filesystem in bytes
 	maxSize int64
 
 	// Set true to automatically delete the oldest files until there's
@@ -106,7 +106,7 @@ func (r *sizedFilesystem) WriteFile(path string, data []byte) (int64, bool, erro
 
 func (r *sizedFilesystem) WriteFileSafe(path string, data []byte) (int64, bool, error) {
 	currentSize, maxSize := r.Size()
-	if maxSize < 0 {
+	if maxSize <= 0 {
 		return r.Filesystem.WriteFile(path, data)
 	}