284 lines
6.3 KiB
C
284 lines
6.3 KiB
C
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/* @(#)wait.h 1.26 16/04/02 Copyright 1995-2016 J. Schilling */
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/*
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* Definitions to deal with various kinds of wait flavour
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*
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* Copyright (c) 1995-2016 J. Schilling
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*/
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/*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* See the file CDDL.Schily.txt in this distribution for details.
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* A copy of the CDDL is also available via the Internet at
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* http://www.opensource.org/licenses/cddl1.txt
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file CDDL.Schily.txt from this distribution.
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*/
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#ifndef _SCHILY_WAIT_H
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#define _SCHILY_WAIT_H
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#ifndef _SCHILY_MCONFIG_H
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#include <schily/mconfig.h>
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#endif
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/*
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* Needed for SysVr4
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*/
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#ifndef _SCHILY_TYPES_H
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#include <schily/types.h>
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#endif
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#if defined(HAVE_WAIT_H)
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# ifndef _INCL_WAIT_H
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# include <wait.h>
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# define _INCL_WAIT_H
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# endif
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#else
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/*
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* K&R Compiler doesn't like #elif
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*/
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# if defined(HAVE_SYS_WAIT_H) /* POSIX.1 compl. sys/wait.h */
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# undef HAVE_UNION_WAIT /* POSIX.1 doesn't use U_W */
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# ifndef _INCL_SYS_WAIT_H
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# include <sys/wait.h>
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# define _INCL_SYS_WAIT_H
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# endif
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# else
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# if defined(HAVE_UNION_WAIT) /* Pure BSD U_W / sys/wait.h */
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# ifndef _INCL_SYS_WAIT_H
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# include <sys/wait.h>
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# define _INCL_SYS_WAIT_H
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# endif
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# endif
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# endif
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#endif
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#ifdef JOS
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# ifndef _INCL_SYS_EXIT_H
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# include <sys/exit.h>
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# define _INCL_SYS_EXIT_H
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# endif
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#endif
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#if defined(__EMX__) || defined(__DJGPP__)
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# ifndef _INCL_PROCESS_H
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# include <process.h>
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# define _INCL_PROCESS_H
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# endif
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#endif
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#if !defined(HAVE_TYPE_SIGINFO_T) && defined(HAVE_SIGINFO_T)
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#ifndef _SCHILY_SIGNAL_H
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#include <schily/signal.h>
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#endif
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* waitid() idtype_t definition, define when missing or broken.
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* NetBSD-5 has an idtype_t that is in conflict with POSIX.
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*/
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#ifndef HAVE_TYPE_IDTYPE_T
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#undef HAVE_WAITID /* Can't have waitid() with broken idtype_t */
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#undef P_PID
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#undef P_PPID
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#undef P_PGID
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#undef P_SID
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#undef P_CID
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#undef P_UID
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#undef P_GID
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#undef P_ALL
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#define P_PID MY_P_PID
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#define P_PPID MY_P_PPID
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#define P_PGID MY_P_PGID
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#define P_SID MY_P_SID
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#define P_CID MY_P_CID
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#define P_UID MY_P_UID
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#define P_GID MY_P_GID
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#define P_ALL MY_P_ALL
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typedef enum {
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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 (job control group) */
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/* 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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} my_idtype_t;
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#undef idtype_t
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#define idtype_t my_idtype_t
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#endif /* HAVE_TYPE_IDTYPE_T */
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#ifndef WCOREFLG
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#ifdef WCOREFLAG
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#define WCOREFLG WCOREFLAG
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#else
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#define WCOREFLG 0x80
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#endif
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#define NO_WCOREFLG
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#endif
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#ifndef WSTOPFLG
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#ifdef _WSTOPPED
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#define WSTOPFLG _WSTOPPED
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#else
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#define WSTOPFLG 0x7F
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#endif
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#define NO_WSTOPFLG
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#endif
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#ifndef WCONTFLG
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#define WCONTFLG 0xFFFF
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#define NO_WCONTFLG
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#endif
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/*
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* Work around a NetBSD bug that has been imported from BSD.
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* There is a #define WSTOPPED _WSTOPPED that is in conflict with the
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* AT&T waitid() flags definition that is part of the POSIX standard.
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*/
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#if defined(WSTOPPED) && defined(_WSTOPPED) && WSTOPPED == _WSTOPPED
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#undef WSTOPPED
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#define WSTOPPED WUNTRACED
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#endif
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/*
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* waitid() option flags:
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*/
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#ifndef WCONTINUED
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#define WCONTINUED 0
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#define NO_WCONTINUED
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#endif
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#ifndef WEXITED
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#define WEXITED 0
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#define NO_WEXITED
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#endif
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#ifndef WNOHANG
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#define WNOHANG 0
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#define NO_WNOHANG
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#endif
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#ifndef WNOWAIT
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#define WNOWAIT 0
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#define NO_WNOWAIT
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#endif
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#ifndef WSTOPPED
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#ifdef WUNTRACED
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#define WSTOPPED WUNTRACED
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#else
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#define WSTOPPED 0
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#endif
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#define NO_WSTOPPED
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#endif
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#ifndef WTRAPPED
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#define WTRAPPED 0
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#define NO_WTRAPPED
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#endif
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/*
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* waitid() code values, #define them when they are missing:
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*/
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#ifndef CLD_EXITED /* Assume all is missing then */
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#define CLD_EXITED 1 /* child has exited */
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#define CLD_KILLED 2 /* child was killed */
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#define CLD_DUMPED 3 /* child has coredumped */
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#define CLD_TRAPPED 4 /* traced child has stopped */
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#define CLD_STOPPED 5 /* child has stopped on signal */
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#define CLD_CONTINUED 6 /* stopped child has continued */
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#define NO_CLD_EXITED
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#endif /* CLD_EXITED */
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#if defined(HAVE_UNION_WAIT) && defined(USE_UNION_WAIT)
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# define WAIT_T union wait
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# define _W_U(w) ((union wait *)&(w))
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# ifndef WTERMSIG
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# define WTERMSIG(status) (_W_U(status)->w_termsig)
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# endif
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# ifndef WCOREDUMP
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# define WCOREDUMP(status) (_W_U(status)->w_coredump)
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# endif
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# ifndef WEXITSTATUS
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# define WEXITSTATUS(status) (_W_U(status)->w_retcode)
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# endif
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# ifndef WSTOPSIG
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# define WSTOPSIG(status) (_W_U(status)->w_stopsig)
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# endif
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# ifndef WIFCONTINUED
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# define WIFCONTINUED(status) (0)
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# endif
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# ifndef WIFSTOPPED
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# define WIFSTOPPED(status) (_W_U(status)->w_stopval == \
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WSTOPFLG)
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# endif
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# ifndef WIFSIGNALED
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# define WIFSIGNALED(status) (_W_U(status)->w_stopval != \
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WSTOPFLG && \
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_W_U(status)->w_termsig != 0)
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# endif
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# ifndef WIFEXITED
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# define WIFEXITED(status) (_W_U(status)->w_stopval != \
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WSTOPFLG && \
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_W_U(status)->w_termsig == 0)
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# endif
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#else
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# define WAIT_T int
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# define _W_I(w) (*(int *)&(w))
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# ifndef WTERMSIG
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# define WTERMSIG(status) (_W_I(status) & 0x7F)
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# endif
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# ifndef WCOREDUMP
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# ifdef WIFCORED /* Haiku */
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# define WCOREDUMP(status) (WIFCORED(_W_I(status)))
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# else
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# define WCOREDUMP(status) (_W_I(status) & 0x80)
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# endif
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# endif
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# ifndef WEXITSTATUS
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# define WEXITSTATUS(status) ((_W_I(status) >> 8) & 0xFF)
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# endif
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# ifndef WSTOPSIG
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# define WSTOPSIG(status) ((_W_I(status) >> 8) & 0xFF)
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# endif
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/*
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* WIFSTOPPED and WIFSIGNALED match the definitions on older UNIX versions
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* e.g. SunOS-4.x or HP-UX
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*/
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# ifndef WIFCONTINUED
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# ifdef NO_WCONTINUED
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# define WIFCONTINUED(status) (0)
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# else
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# define WIFCONTINUED(status) ((_W_I(status) & 0xFFFF) == \
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WCONTFLG)
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# endif
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# endif
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# ifndef WIFSTOPPED
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# define WIFSTOPPED(status) ((_W_I(status) & 0xFF) == 0x7F)
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# endif
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# ifndef WIFSIGNALED
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# define WIFSIGNALED(status) ((_W_I(status) & 0xFF) != 0x7F && \
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WTERMSIG(status) != 0)
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# endif
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# ifndef WIFEXITED
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# define WIFEXITED(status) ((_W_I(status) & 0xFF) == 0)
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# endif
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SCHILY_WAIT_H */
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