/* Copyright (C) 1991-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <errno.h>

#include <unistd.h>

#include <sys/types.h>

/* Seek to OFFSET on FD, starting from WHENCE.  */

off_t

__libc_lseek (int fd, off_t offset, int whence)

{

  if (fd < 0)

    {

      __set_errno (EBADF);

      return -1;

    }

  switch (whence)

    {

    case SEEK_SET:

    case SEEK_CUR:

    case SEEK_END:

      break;

    default:

      __set_errno (EINVAL);

      return -1;

    }

  __set_errno (ENOSYS);

  return -1;

}

weak_alias (__libc_lseek, __lseek)

weak_alias (__libc_lseek, lseek)

stub_warning (lseek)

libc_hidden_def (__lseek)