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Fold "malloc" into "stdio" and -- recognizing that no program so far has
used less than "stdio" -- include all the "self" operations.  Instead of
different defines, use regular PLEDGE_* in the "p_pledgenote" variable
(which indicates the operation subtype a system call is performing).  Many
checks before easier to understand.  p_pledgenote can often be passed
directly to ktrace, so that kdump says:
 15565 test     CALL  pledge(0xa9a3f804c51,0)
 15565 test     STRU  pledge request="stdio"
 15565 test     RET   pledge 0
 15565 test     CALL  open(0xa9a3f804c57,0x2<O_RDWR>)
 15565 test     NAMI  "/tmp/testfile"
 15565 test     PLDG  open, "wpath", errno 1 Operation not permitted
with help from semarie, ok guenther

/*	$OpenBSD: ktrace.h,v 1.9 2015/10/25 20:39:54 deraadt Exp $ */
/*-
 * Copyright (c) 1988, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	from: @(#)ktrace.h	8.1 (Berkeley) 6/6/93
 */

#define DEF_POINTS (KTRFAC_SYSCALL | KTRFAC_SYSRET | KTRFAC_NAMEI | \
		  KTRFAC_GENIO | KTRFAC_PSIG | KTRFAC_EMUL | KTRFAC_STRUCT | \
		  KTRFAC_USER | KTRFAC_EXECARGS | KTRFAC_PLEDGE)

/* any KTRFAC_* not included in DEF_POINTS should be added here */
#define ALL_POINTS (DEF_POINTS | KTRFAC_EXECENV)

#define DEF_TRACEFILE	"ktrace.out"