4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* $NetBSD: wait.h,v 1.24 2005/12/11 12:25:21 christos Exp $ */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Copyright (c) 1982, 1986, 1989, 1993, 1994
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * The Regents of the University of California. All rights reserved.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Redistribution and use in source and binary forms, with or without
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * modification, are permitted provided that the following conditions
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * are met:
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 1. Redistributions of source code must retain the above copyright
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * notice, this list of conditions and the following disclaimer.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 2. Redistributions in binary form must reproduce the above copyright
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * notice, this list of conditions and the following disclaimer in the
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * documentation and/or other materials provided with the distribution.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 3. Neither the name of the University nor the names of its contributors
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * may be used to endorse or promote products derived from this software
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * without specific prior written permission.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * SUCH DAMAGE.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * @(#)wait.h 8.2 (Berkeley) 7/10/94
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifndef _SYS_WAIT_H_
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define _SYS_WAIT_H_
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <sys/featuretest.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <sys/types.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * This file holds definitions relevent to the wait4 system call
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * and the alternate interfaces that use it (wait, wait3, waitpid).
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Macros to test the exit status returned by wait
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * and extract the relevant values.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define _W_INT(w) (*(int *)(void *)&(w)) /* convert union wait to int */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define _WSTATUS(x) (_W_INT(x) & 0177)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define _WSTOPPED 0177 /* _WSTATUS if process is stopped */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define WIFSTOPPED(x) (_WSTATUS(x) == _WSTOPPED)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define WSTOPSIG(x) ((int)(((unsigned int)_W_INT(x)) >> 8) & 0xff)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define WIFSIGNALED(x) (_WSTATUS(x) != _WSTOPPED && _WSTATUS(x) != 0)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define WTERMSIG(x) (_WSTATUS(x))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define WIFEXITED(x) (_WSTATUS(x) == 0)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define WEXITSTATUS(x) ((int)(((unsigned int)_W_INT(x)) >> 8) & 0xff)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define WCOREFLAG 0200
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define WCOREDUMP(x) (_W_INT(x) & WCOREFLAG)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define W_EXITCODE(ret, sig) ((ret) << 8 | (sig))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define W_STOPCODE(sig) ((sig) << 8 | _WSTOPPED)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Option bits for the third argument of wait4. WNOHANG causes the
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * wait to not hang if there are no stopped or terminated processes, rather
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * returning an error indication in this case (pid==0). WUNTRACED
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * indicates that the caller should receive status about untraced children
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * which stop due to signals. If children are stopped and a wait without
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * this option is done, it is as though they were still running... nothing
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * about them is returned.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define WNOHANG 0x00000001 /* don't hang in wait */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define WUNTRACED 0x00000002 /* tell about stopped,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync untraced children */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define WALTSIG 0x00000004 /* wait for processes that exit
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync with an alternate signal (i.e.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync not SIGCHLD) */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define WALLSIG 0x00000008 /* wait for processes that exit
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync with any signal, i.e. SIGCHLD
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync and alternates */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * These are the Linux names of some of the above flags, for compatibility
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * with Linux's clone(2) API.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define __WCLONE WALTSIG
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define __WALL WALLSIG
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * These bits are used in order to support SVR4 (etc) functionality
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * without replicating sys_wait4 5 times.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define WNOWAIT 0x00010000 /* Don't mark child 'P_WAITED' */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define WNOZOMBIE 0x00020000 /* Ignore zombies */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* _XOPEN_SOURCE || _NETBSD_SOURCE */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* POSIX extensions and 4.2/4.3 compatibility: */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Tokens for special values of the "pid" parameter to wait4.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define WAIT_ANY (-1) /* any process */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define WAIT_MYPGRP 0 /* any process in my process group */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Deprecated:
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Structure of the information in the status word returned by wait4.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * If w_stopval==WSTOPPED, then the second structure describes
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * the information returned, else the first.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncunion wait {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync int w_status; /* used in syscall */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync /*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Terminated process status.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync struct {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if BYTE_ORDER == LITTLE_ENDIAN
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync unsigned int w_Termsig:7, /* termination signal */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync w_Coredump:1, /* core dump indicator */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync w_Retcode:8, /* exit code if w_termsig==0 */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync w_Filler:16; /* upper bits filler */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if BYTE_ORDER == BIG_ENDIAN
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync unsigned int w_Filler:16, /* upper bits filler */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync w_Retcode:8, /* exit code if w_termsig==0 */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync w_Coredump:1, /* core dump indicator */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync w_Termsig:7; /* termination signal */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync } w_T;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync /*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Stopped process status. Returned
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * only for traced children unless requested
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * with the WUNTRACED option bit.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync struct {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if BYTE_ORDER == LITTLE_ENDIAN
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync unsigned int w_Stopval:8, /* == W_STOPPED if stopped */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync w_Stopsig:8, /* signal that stopped us */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync w_Filler:16; /* upper bits filler */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if BYTE_ORDER == BIG_ENDIAN
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync unsigned int w_Filler:16, /* upper bits filler */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync w_Stopsig:8, /* signal that stopped us */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync w_Stopval:8; /* == W_STOPPED if stopped */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync } w_S;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync};
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define w_termsig w_T.w_Termsig
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define w_coredump w_T.w_Coredump
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define w_retcode w_T.w_Retcode
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define w_stopval w_S.w_Stopval
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define w_stopsig w_S.w_Stopsig
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define WSTOPPED _WSTOPPED
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync__BEGIN_DECLS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncpid_t wait(int *);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if 0 /* Normally declared here but not implemented for UEFI. */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncstruct rusage; /* forward declaration */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncpid_t waitpid(pid_t, int *, int);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncpid_t wait3(int *, int, struct rusage *);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncpid_t wait4(pid_t, int *, int, struct rusage *);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync__END_DECLS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* !_SYS_WAIT_H_ */