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/* fhandler_dev_zero.cc: code to access /dev/zero
Copyright 2000, 2001, 2002, 2003, 2004, 2005 Red Hat, Inc.
Written by DJ Delorie (dj@cygnus.com)
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include "winsup.h"
#include <errno.h>
#include "security.h"
#include "cygerrno.h"
#include "path.h"
#include "fhandler.h"
fhandler_dev_zero::fhandler_dev_zero ()
: fhandler_base ()
{
}
int
fhandler_dev_zero::open (int flags, mode_t)
{
set_flags ((flags & ~O_TEXT) | O_BINARY);
nohandle (true);
set_open_status ();
return 1;
}
int
fhandler_dev_zero::write (const void *, size_t len)
{
if (get_device () == FH_FULL)
{
set_errno (ENOSPC);
return -1;
}
return len;
}
void __stdcall
fhandler_dev_zero::read (void *ptr, size_t& len)
{
memset (ptr, 0, len);
return;
}
_off64_t
fhandler_dev_zero::lseek (_off64_t, int)
{
return 0;
}
void
fhandler_dev_zero::dump ()
{
paranoid_printf ("here, fhandler_dev_zero");
}
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