diff --git a/linker/linker_phdr.h b/linker/linker_phdr.h
index aab9018..dc1ca99 100644
--- a/linker/linker_phdr.h
+++ b/linker/linker_phdr.h
@@ -73,6 +73,7 @@
   [[nodiscard]] bool FindGnuPropertySection();
   [[nodiscard]] bool CheckPhdr(ElfW(Addr));
   [[nodiscard]] bool CheckFileRange(ElfW(Addr) offset, size_t size, size_t alignment);
+  [[nodiscard]] void* MapData(MappedFileFragment* fragment, off64_t offs, off64_t size);
 
   bool did_read_;
   bool did_load_;
@@ -81,6 +82,8 @@
   off64_t file_offset_;
   off64_t file_size_;
 
+  MappedFileFragment file_fragment_;
+
   ElfW(Ehdr) header_;
   size_t phdr_num_;