/*- * 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. */ #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_ */
