newlib/winsup/cygwin/fhandler_zero.cc
Corinna Vinschen 1727fba007 * dir.cc: Change __off32_t to _off_t and __off64_t to _off64_t
throughout.
	* fhandler.cc: Ditto.
	* fhandler.h: Ditto.
	* fhandler_clipboard.cc: Ditto.
	* fhandler_disk_file.cc: Ditto.
	* fhandler_dsp.cc: Ditto.
	* fhandler_floppy.cc: Ditto.
	* fhandler_mem.cc: Ditto.
	* fhandler_proc.cc: Ditto.
	* fhandler_process.cc: Ditto.
	* fhandler_random.cc: Ditto.
	* fhandler_registry.cc: Ditto.
	* fhandler_tape.cc: Ditto.
	* fhandler_termios.cc: Ditto.
	* fhandler_virtual.cc: Ditto.
	* fhandler_zero.cc: Ditto.
	* mmap.cc: Ditto.
	* pipe.cc: Ditto.
	* syscalls.cc: Ditto.
	* winsup.h: Ditto.
	* include/cygwin/stat.h: Ditto.
	* include/cygwin/types.h: Ditto.  Remove definition of __off32_t
	and __off64_t.
2003-04-01 16:11:41 +00:00

56 lines
963 B
C++

/* fhandler_dev_zero.cc: code to access /dev/zero
Copyright 2000, 2001, 2002 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 "fhandler.h"
fhandler_dev_zero::fhandler_dev_zero ()
: fhandler_base (FH_ZERO)
{
}
int
fhandler_dev_zero::open (path_conv *, int flags, mode_t)
{
set_flags ((flags & ~O_TEXT) | O_BINARY);
set_nohandle (true);
set_open_status ();
return 1;
}
int
fhandler_dev_zero::write (const void *, size_t len)
{
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");
}