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 
32