module LargeFile: sig .. end
File operations on large files.
  This sub-module provides 64-bit variants of the functions
  Unix.lseek (for positioning a file descriptor),
  Unix.truncate and Unix.ftruncate (for changing the size of a file),
  and Unix.stat, Unix.lstat and Unix.fstat (for obtaining
  information on files).  These alternate functions represent
  positions and sizes by 64-bit integers (type int64) instead of
  regular integers (type int), thus allowing operating on files
  whose sizes are greater than max_int.
val lseek : Unix.file_descr -> int64 -> Unix.seek_command -> int64
val truncate : string -> int64 -> unit
val ftruncate : Unix.file_descr -> int64 -> unit
type 
|    | st_dev :int; | 
|    | st_ino :int; | 
|    | st_kind :Unix.file_kind; | 
|    | st_perm :Unix.file_perm; | 
|    | st_nlink :int; | 
|    | st_uid :int; | 
|    | st_gid :int; | 
|    | st_rdev :int; | 
|    | st_size :int64; | 
|    | st_atime :float; | 
|    | st_mtime :float; | 
|    | st_ctime :float; | 
}
val stat : string -> stats
val lstat : string -> stats
val fstat : Unix.file_descr -> stats