toolchain/gcc/libgloss/lseek.c

   1 /* lseek.c -- move read/write pointer.
   2  *
   3  * Copyright (c) 1995 Cygnus Support
   4  *
   5  * The authors hereby grant permission to use, copy, modify, distribute,
   6  * and license this software and its documentation for any purpose, provided
   7  * that existing copyright notices are retained in all copies and that this
   8  * notice is included verbatim in any distributions. No written agreement,
   9  * license, or royalty fee is required for any of the authorized uses.
  10  * Modifications to this software may be copyrighted by their authors
  11  * and need not follow the licensing terms described here, provided that
  12  * the new terms are clearly indicated on the first page of each file where
  13  * they apply.
  14  */
  15 #include <sys/types.h>
  16 #include <errno.h>
  17 #include "glue.h"
  18
  19 /*
  20  * lseek --  Since a serial port is non-seekable, we return an error.
  21  */
  22 off_t
  23 _DEFUN (lseek, (fd,  offset, whence),
  24        int fd _AND
  25        off_t offset _AND
  26        int whence)
  27 {
  28   errno = ESPIPE;
  29   return ((off_t)-1);
  30 }
  31