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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
     28 /*	  All Rights Reserved  	*/
     29 
     30 /*
     31  * Portions of this source code were derived from Berkeley 4.3 BSD
     32  * under license from the Regents of the University of California.
     33  */
     34 
     35 #ifndef _SYS_WAIT_H
     36 #define	_SYS_WAIT_H
     37 
     38 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     39 
     40 #include <sys/isa_defs.h>
     41 #include <sys/resource.h>
     42 
     43 #ifdef __cplusplus
     44 extern "C" {
     45 #endif
     46 
     47 /*
     48  * This wait.h is a combination of SunOS's wait.h and SysV wait.h
     49  * The structure 'union wait' is taken from SunOS, while the
     50  * rest of the #define's are from SysV.
     51  */
     52 
     53 /*
     54  * Structure of the information in the first word returned by both
     55  * wait and wait3.  If w_stopval==WSTOPPED, then the second structure
     56  * describes the information returned, else the first.  See WUNTRACED below.
     57  */
     58 union wait	{
     59 	int	w_status;		/* used in syscall */
     60 	/*
     61 	 * Terminated process status.
     62 	 */
     63 	struct {
     64 #if defined(_BIT_FIELDS_LTOH)
     65 		unsigned short	w_Termsig:7;	/* termination signal */
     66 		unsigned short	w_Coredump:1;	/* core dump indicator */
     67 		unsigned short	w_Retcode:8;	/* exit code if w_termsig==0 */
     68 #else
     69 		unsigned short	w_Fill1:16;	/* high 16 bits unused */
     70 		unsigned short	w_Retcode:8;	/* exit code if w_termsig==0 */
     71 		unsigned short	w_Coredump:1;	/* core dump indicator */
     72 		unsigned short	w_Termsig:7;	/* termination signal */
     73 #endif
     74 	} w_T;
     75 	/*
     76 	 * Stopped process status.  Returned
     77 	 * only for traced children unless requested
     78 	 * with the WUNTRACED option bit.
     79 	 */
     80 	struct {
     81 #if defined(_BIT_FIELDS_LTOH)
     82 		unsigned short	w_Stopval:8;	/* == W_STOPPED if stopped */
     83 		unsigned short	w_Stopsig:8;	/* signal that stopped us */
     84 #else
     85 		unsigned short	w_Fill2:16;	/* high 16 bits unused */
     86 		unsigned short	w_Stopsig:8;	/* signal that stopped us */
     87 		unsigned short	w_Stopval:8;	/* == W_STOPPED if stopped */
     88 #endif
     89 	} w_S;
     90 };
     91 #define	w_termsig	w_T.w_Termsig
     92 #define	w_coredump	w_T.w_Coredump
     93 #define	w_retcode	w_T.w_Retcode
     94 #define	w_stopval	w_S.w_Stopval
     95 #define	w_stopsig	w_S.w_Stopsig
     96 
     97 /* ----- begin SysV wait.h ----- */
     98 
     99 #include <sys/types.h>
    100 #ifdef	BUS_OBJERR	/* Namespace conflict */
    101 #undef	BUS_OBJERR
    102 #endif
    103 #include <sys/siginfo.h>
    104 #include <sys/procset.h>
    105 
    106 /*
    107  * arguments to wait functions
    108  */
    109 
    110 #define	WEXITED		0001	/* wait for processes that have exite	*/
    111 #define	WTRAPPED	0002	/* wait for processes stopped while tracing */
    112 #define	N_WSTOPPED	0004	/* wait for processes stopped by signals */
    113 #define	WCONTINUED	0010	/* wait for processes continued */
    114 
    115 #define	WUNTRACED	N_WSTOPPED /* for POSIX */
    116 
    117 #define	WNOHANG		0100	/* non blocking form of wait	*/
    118 #define	WNOWAIT		0200	/* non destructive form of wait */
    119 
    120 #define	WOPTMASK	(WEXITED|WTRAPPED|WSTOPPED|WCONTINUED|WNOHANG|WNOWAIT)
    121 
    122 /*
    123  * macros for stat return from wait functions
    124  */
    125 
    126 #define	WSTOPFLG		0177
    127 #define	WSTOPPED		WSTOPFLG
    128 				/* This is for source compatibility w/ SunOS */
    129 #define	WCONTFLG		0177777
    130 #define	WCOREFLG		0200
    131 #define	WSIGMASK		0177
    132 
    133 #define	WLOBYTE(stat)		((int)((stat)&0377))
    134 #define	WHIBYTE(stat)		((int)(((stat)>>8)&0377))
    135 #define	WWORD(stat)		((int)((stat))&0177777)
    136 
    137 #define	WIFEXITED(stat)		(WLOBYTE(stat) == 0)
    138 #define	WIFSIGNALED(stat)	(WLOBYTE(stat) > 0 && WHIBYTE(stat) == 0)
    139 #define	WIFSTOPPED(stat)	(WLOBYTE(stat) == WSTOPFLG&&WHIBYTE(stat) != 0)
    140 #define	WIFCONTINUED(stat)	(WWORD(stat) == WCONTFLG)
    141 
    142 #define	WEXITSTATUS(stat)	WHIBYTE(stat)
    143 #define	WTERMSIG(stat)		(WLOBYTE(stat)&WSIGMASK)
    144 #define	WSTOPSIG(stat)		WHIBYTE(stat)
    145 #define	WCOREDUMP(stat)		((stat)&WCOREFLG)
    146 
    147 
    148 
    149 #if !defined(_KERNEL)
    150 #if defined(__STDC__)
    151 
    152 extern pid_t wait(int *);
    153 extern pid_t waitpid(pid_t, int *, int);
    154 extern int waitid(idtype_t, id_t, siginfo_t *, int);
    155 extern pid_t wait4(pid_t, int *, int, struct rusage *);
    156 extern pid_t wait3(int *, int, struct rusage *);
    157 
    158 #else
    159 
    160 extern pid_t wait();
    161 extern pid_t waitpid();
    162 extern int waitid();
    163 
    164 #endif	/* __STDC__ */
    165 #endif	/* _KERNEL */
    166 
    167 #ifdef __cplusplus
    168 }
    169 #endif
    170 
    171 #endif	/* _SYS_WAIT_H */
    172