lseek.c

来自「xilinx内嵌CPU下的UCOS移植」· C语言 代码 · 共 34 行

/*-----------------------------------------------------------------------------
//
//     XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS"
//     SOLELY FOR USE IN DEVELOPING PROGRAMS AND SOLUTIONS FOR
//     XILINX DEVICES.  BY PROVIDING THIS DESIGN, CODE, OR INFORMATION
//     AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION
//     OR STANDARD, XILINX IS MAKING NO REPRESENTATION THAT THIS
//     IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT,
//     AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE
//     FOR YOUR IMPLEMENTATION.  XILINX EXPRESSLY DISCLAIMS ANY
//     WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE
//     IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR
//     REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF
//     INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
//     FOR A PARTICULAR PURPOSE.
//     
//     (c) Copyright 2006 Xilinx, Inc.
//     All rights reserved.
//
//---------------------------------------------------------------------------*/

#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);
}