lseek.c

实用的程序代码

/*-----------------------------------------------------------------------------
//     $Date: 2002/09/16 21:19:30 $
//     $RCSfile: lseek.c,v $
//-----------------------------------------------------------------------------
//
// $xilinx_legal_disclaimer
//
//---------------------------------------------------------------------------*/

#include <sys/types.h>
#include <errno.h>

/*
 * lseek --  Since a serial port is non-seekable, we return an error.
 */
off_t lseek(int fd, off_t offset, int whence)
{
  errno = ESPIPE;
  return ((off_t)-1);
}