glibc/sysdeps/stub/lseek.c

52 lines
1.3 KiB
C

/* Copyright (C) 1991, 1995, 1996 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
/* Seek to OFFSET on FD, starting from WHENCE. */
off_t
__lseek (fd, offset, whence)
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;
}
stub_warning (lseek)
weak_alias (__lseek, lseek)