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