Arguments

 

file_desc

   An integer returned by open, creat, dup, or dup2.
 

offset

   The offset, specified in bytes. The off_t data type is either a
   32-bit or a 64-bit integer. The 64-bit interface allows for file
   sizes greater than 2 GB, and can be selected at compile time by
   defining the _LARGEFILE feature-test macro as follows:

   CC/DEFINE=_LARGEFILE
 

direction

   An integer indicating whether the offset is to be measured
   forward from the beginning of the file (direction=SEEK_SET),
   forward from the current position (direction=SEEK_CUR), or
   backward from the end of the file (direction=SEEK_END).