diff --git a/rocclr/os/os.hpp b/rocclr/os/os.hpp
index 82879dee67..d7b958e847 100644
--- a/rocclr/os/os.hpp
+++ b/rocclr/os/os.hpp
@@ -120,6 +120,10 @@ class Os : AllStatic {
                                 const void** mmap_ptr);
   // Given a valid file name, returns mmapped memory with the mapped size.
   static bool MemoryMapFile(const char* fname, const void** mmap_ptr, size_t* mmap_size);
+
+  // Given a valid file name amd mapped size, returns ftruncated mmaped memory 
+  static bool MemoryMapFileTruncated(const char* fname, const void** mmap_ptr, size_t mmap_size);
+
   // Given a valid mmaped ptr with correct size, unmaps the ptr from memory
   static bool MemoryUnmapFile(const void* mmap_ptr, size_t mmap_size);
 
diff --git a/rocclr/os/os_posix.cpp b/rocclr/os/os_posix.cpp
index 91d08bc3d0..1210e291f1 100644
--- a/rocclr/os/os_posix.cpp
+++ b/rocclr/os/os_posix.cpp
@@ -813,6 +813,31 @@ bool Os::MemoryMapFile(const char* fname, const void** mmap_ptr, size_t* mmap_si
   return true;
 }
 
+bool Os::MemoryMapFileTruncated(const char* fname, const void** mmap_ptr, size_t mmap_size) {
+  if ((mmap_ptr == nullptr)) {
+    return false;
+  }
+
+  struct stat stat_buf;
+  int fd = shm_open(fname, O_RDWR|O_CREAT, S_IRWXU|S_IRWXG|S_IRWXO);
+  if (fd < 0 ) {
+    return false;
+  }
+
+  if (ftruncate(fd, mmap_size) != 0) {
+    return false;
+  }
+  *mmap_ptr = mmap(NULL, mmap_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
+
+  close(fd);
+
+  if (*mmap_ptr == nullptr) {
+    return false;
+  }
+
+  return true;
+}
+
 }  // namespace amd
 
 #endif  // !defined(_WIN32) && !defined(__CYGWIN__)
diff --git a/rocclr/os/os_win32.cpp b/rocclr/os/os_win32.cpp
index 53abbb2d89..f176231bc0 100644
--- a/rocclr/os/os_win32.cpp
+++ b/rocclr/os/os_win32.cpp
@@ -911,6 +911,10 @@ bool Os::MemoryMapFile(const char* fname, const void** mmap_ptr, size_t* mmap_si
   return true;
 }
 
+bool Os::MemoryMapFileTruncated(const char* fname, const void** mmap_ptr, size_t mmap_size) {
+  //TODO: fix with proper implementation
+  return false;
+}
 }  // namespace amd
 
 #endif  // _WIN32 || __CYGWIN__