51369649b0
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
177 lines
6.1 KiB
C
177 lines
6.1 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1982, 1986, 1989, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)wait.h 8.2 (Berkeley) 7/10/94
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* $FreeBSD$
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*/
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#ifndef _SYS_WAIT_H_
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#define _SYS_WAIT_H_
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#include <sys/cdefs.h>
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/*
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* This file holds definitions relevant to the wait4 system call and the
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* alternate interfaces that use it (wait, wait3, waitpid).
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*/
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/*
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* Macros to test the exit status returned by wait and extract the relevant
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* values.
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*/
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#if __BSD_VISIBLE
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#define WCOREFLAG 0200
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#endif
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#define _W_INT(i) (i)
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#define _WSTATUS(x) (_W_INT(x) & 0177)
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#define _WSTOPPED 0177 /* _WSTATUS if process is stopped */
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#define WIFSTOPPED(x) (_WSTATUS(x) == _WSTOPPED)
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#define WSTOPSIG(x) (_W_INT(x) >> 8)
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#define WIFSIGNALED(x) (_WSTATUS(x) != _WSTOPPED && _WSTATUS(x) != 0 && (x) != 0x13)
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#define WTERMSIG(x) (_WSTATUS(x))
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#define WIFEXITED(x) (_WSTATUS(x) == 0)
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#define WEXITSTATUS(x) (_W_INT(x) >> 8)
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#define WIFCONTINUED(x) (x == 0x13) /* 0x13 == SIGCONT */
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#if __BSD_VISIBLE
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#define WCOREDUMP(x) (_W_INT(x) & WCOREFLAG)
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#define W_EXITCODE(ret, sig) ((ret) << 8 | (sig))
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#define W_STOPCODE(sig) ((sig) << 8 | _WSTOPPED)
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#endif
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/*
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* Option bits for the third argument of wait4. WNOHANG causes the
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* wait to not hang if there are no stopped or terminated processes, rather
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* returning an error indication in this case (pid==0). WUNTRACED
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* indicates that the caller should receive status about untraced children
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* which stop due to signals. If children are stopped and a wait without
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* this option is done, it is as though they were still running... nothing
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* about them is returned. WNOWAIT only request information about zombie,
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* leaving the proc around, available for later waits.
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*/
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#define WNOHANG 1 /* Don't hang in wait. */
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#define WUNTRACED 2 /* Tell about stopped, untraced children. */
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#define WSTOPPED WUNTRACED /* SUS compatibility */
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#define WCONTINUED 4 /* Report a job control continued process. */
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#define WNOWAIT 8 /* Poll only. Don't delete the proc entry. */
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#define WEXITED 16 /* Wait for exited processes. */
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#define WTRAPPED 32 /* Wait for a process to hit a trap or
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a breakpoint. */
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#if __BSD_VISIBLE
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#define WLINUXCLONE 0x80000000 /* Wait for kthread spawned from linux_clone. */
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#endif
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#ifndef _IDTYPE_T_DECLARED
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typedef enum
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#if __BSD_VISIBLE
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idtype /* pollutes XPG4.2 namespace */
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#endif
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{
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/*
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* These names were mostly lifted from Solaris source code and
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* still use Solaris style naming to avoid breaking any
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* OpenSolaris code which has been ported to FreeBSD. There
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* is no clear FreeBSD counterpart for all of the names, but
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* some have a clear correspondence to FreeBSD entities.
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*
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* The numerical values are kept synchronized with the Solaris
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* values.
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*/
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P_PID, /* A process identifier. */
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P_PPID, /* A parent process identifier. */
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P_PGID, /* A process group identifier. */
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P_SID, /* A session identifier. */
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P_CID, /* A scheduling class identifier. */
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P_UID, /* A user identifier. */
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P_GID, /* A group identifier. */
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P_ALL, /* All processes. */
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P_LWPID, /* An LWP identifier. */
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P_TASKID, /* A task identifier. */
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P_PROJID, /* A project identifier. */
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P_POOLID, /* A pool identifier. */
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P_JAILID, /* A zone identifier. */
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P_CTID, /* A (process) contract identifier. */
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P_CPUID, /* CPU identifier. */
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P_PSETID /* Processor set identifier. */
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} idtype_t; /* The type of id_t we are using. */
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#if __BSD_VISIBLE
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#define P_ZONEID P_JAILID
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#endif
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#define _IDTYPE_T_DECLARED
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#endif
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/*
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* Tokens for special values of the "pid" parameter to wait4.
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* Extended struct __wrusage to collect rusage for both the target
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* process and its children within one wait6() call.
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*/
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#if __BSD_VISIBLE
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#define WAIT_ANY (-1) /* any process */
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#define WAIT_MYPGRP 0 /* any process in my process group */
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#endif /* __BSD_VISIBLE */
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#if defined(_KERNEL) || defined(_WANT_KW_EXITCODE)
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/*
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* Clamp the return code to the low 8 bits from full 32 bit value.
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* Should be used in kernel to construct the wait(2)-compatible process
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* status to usermode.
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*/
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#define KW_EXITCODE(ret, sig) W_EXITCODE((ret) & 0xff, (sig))
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#endif /* _KERNEL || _WANT_KW_EXITCODE */
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#ifndef _KERNEL
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#include <sys/types.h>
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__BEGIN_DECLS
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struct __siginfo;
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pid_t wait(int *);
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pid_t waitpid(pid_t, int *, int);
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#if __POSIX_VISIBLE >= 200112
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int waitid(idtype_t, id_t, struct __siginfo *, int);
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#endif
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#if __BSD_VISIBLE
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struct rusage;
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struct __wrusage;
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pid_t wait3(int *, int, struct rusage *);
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pid_t wait4(pid_t, int *, int, struct rusage *);
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pid_t wait6(idtype_t, id_t, int *, int, struct __wrusage *,
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struct __siginfo *);
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#endif
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__END_DECLS
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#endif /* !_KERNEL */
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#endif /* !_SYS_WAIT_H_ */
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