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/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1982, 1986, 1989, 1993, 1994
* 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.
*
* @(#)wait.h 8.2 (Berkeley) 7/10/94
* $FreeBSD$
*/
#ifndef _SYS_WAIT_H_
#define _SYS_WAIT_H_
#include <sys/cdefs.h>
/*
* This file holds definitions relevant to the wait4 system call and the
* alternate interfaces that use it (wait, wait3, waitpid).
*/
/*
* Macros to test the exit status returned by wait and extract the relevant
* values.
*/
#if __BSD_VISIBLE
#define WCOREFLAG 0200
#endif
#define _W_INT(i) (i)
#define _WSTATUS(x) (_W_INT(x) & 0177)
#define _WSTOPPED 0177 /* _WSTATUS if process is stopped */
#define WIFSTOPPED(x) (_WSTATUS(x) == _WSTOPPED)
#define WSTOPSIG(x) (_W_INT(x) >> 8)
#define WIFSIGNALED(x) (_WSTATUS(x) != _WSTOPPED && _WSTATUS(x) != 0 && (x) != 0x13)
#define WTERMSIG(x) (_WSTATUS(x))
#define WIFEXITED(x) (_WSTATUS(x) == 0)
#define WEXITSTATUS(x) (_W_INT(x) >> 8)
#define WIFCONTINUED(x) (x == 0x13) /* 0x13 == SIGCONT */
#if __BSD_VISIBLE
#define WCOREDUMP(x) (_W_INT(x) & WCOREFLAG)
#define W_EXITCODE(ret, sig) ((ret) << 8 | (sig))
#define W_STOPCODE(sig) ((sig) << 8 | _WSTOPPED)
#endif
/*
* Option bits for the third argument of wait4. WNOHANG causes the
* wait to not hang if there are no stopped or terminated processes, rather
* returning an error indication in this case (pid==0). WUNTRACED
* indicates that the caller should receive status about untraced children
* which stop due to signals. If children are stopped and a wait without
* this option is done, it is as though they were still running... nothing
* about them is returned. WNOWAIT only request information about zombie,
* leaving the proc around, available for later waits.
*/
#define WNOHANG 1 /* Don't hang in wait. */
#define WUNTRACED 2 /* Tell about stopped, untraced children. */
#define WSTOPPED WUNTRACED /* SUS compatibility */
#define WCONTINUED 4 /* Report a job control continued process. */
#define WNOWAIT 8 /* Poll only. Don't delete the proc entry. */
#define WEXITED 16 /* Wait for exited processes. */
#define WTRAPPED 32 /* Wait for a process to hit a trap or
a breakpoint. */
#if __BSD_VISIBLE
#define WLINUXCLONE 0x80000000 /* Wait for kthread spawned from linux_clone. */
#endif
#ifndef _IDTYPE_T_DECLARED
typedef enum
#if __BSD_VISIBLE
idtype /* pollutes XPG4.2 namespace */
#endif
{
/*
* These names were mostly lifted from Solaris source code and
* still use Solaris style naming to avoid breaking any
* OpenSolaris code which has been ported to FreeBSD. There
* is no clear FreeBSD counterpart for all of the names, but
* some have a clear correspondence to FreeBSD entities.
*
* The numerical values are kept synchronized with the Solaris
* values.
*/
P_PID, /* A process identifier. */
P_PPID, /* A parent process identifier. */
P_PGID, /* A process group identifier. */
P_SID, /* A session identifier. */
P_CID, /* A scheduling class identifier. */
P_UID, /* A user identifier. */
P_GID, /* A group identifier. */
P_ALL, /* All processes. */
P_LWPID, /* An LWP identifier. */
P_TASKID, /* A task identifier. */
P_PROJID, /* A project identifier. */
P_POOLID, /* A pool identifier. */
P_JAILID, /* A zone identifier. */
P_CTID, /* A (process) contract identifier. */
P_CPUID, /* CPU identifier. */
P_PSETID /* Processor set identifier. */
} idtype_t; /* The type of id_t we are using. */
#if __BSD_VISIBLE
#define P_ZONEID P_JAILID
#endif
#define _IDTYPE_T_DECLARED
#endif
/*
* Tokens for special values of the "pid" parameter to wait4.
* Extended struct __wrusage to collect rusage for both the target
* process and its children within one wait6() call.
*/
#if __BSD_VISIBLE
#define WAIT_ANY (-1) /* any process */
#define WAIT_MYPGRP 0 /* any process in my process group */
#endif /* __BSD_VISIBLE */
#if defined(_KERNEL) || defined(_WANT_KW_EXITCODE)
/*
* Clamp the return code to the low 8 bits from full 32 bit value.
* Should be used in kernel to construct the wait(2)-compatible process
* status to usermode.
*/
#define KW_EXITCODE(ret, sig) W_EXITCODE((ret) & 0xff, (sig))
#endif /* _KERNEL || _WANT_KW_EXITCODE */
#ifndef _KERNEL
#include <sys/types.h>
__BEGIN_DECLS
struct __siginfo;
pid_t wait(int *);
pid_t waitpid(pid_t, int *, int);
#if __POSIX_VISIBLE >= 200112
int waitid(idtype_t, id_t, struct __siginfo *, int);
#endif
#if __BSD_VISIBLE
struct rusage;
struct __wrusage;
pid_t wait3(int *, int, struct rusage *);
pid_t wait4(pid_t, int *, int, struct rusage *);
pid_t wait6(idtype_t, id_t, int *, int, struct __wrusage *,
struct __siginfo *);
#endif
__END_DECLS
#endif /* !_KERNEL */
#endif /* !_SYS_WAIT_H_ */
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