10Sstevel@tonic-gate /* 20Sstevel@tonic-gate * Copyright 1989 Sun Microsystems, Inc. All rights reserved. 30Sstevel@tonic-gate * Use is subject to license terms. 40Sstevel@tonic-gate */ 50Sstevel@tonic-gate 60Sstevel@tonic-gate /* 70Sstevel@tonic-gate * Copyright (c) 1982, 1986 Regents of the University of California. 80Sstevel@tonic-gate * All rights reserved. The Berkeley software License Agreement 90Sstevel@tonic-gate * specifies the terms and conditions for redistribution. 100Sstevel@tonic-gate */ 110Sstevel@tonic-gate 12722Smuffin #ifndef __sys_wait_h 13722Smuffin #define __sys_wait_h 14722Smuffin 150Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 160Sstevel@tonic-gate 170Sstevel@tonic-gate /* 18*3517Smp204432 * This file holds definitions relevant to the wait system call. 190Sstevel@tonic-gate * Some of the options here are available only through the ``wait3'' 200Sstevel@tonic-gate * entry point; the old entry point with one argument has more fixed 210Sstevel@tonic-gate * semantics, never returning status of unstopped children, hanging until 220Sstevel@tonic-gate * a process terminates if any are outstanding, and never returns 230Sstevel@tonic-gate * detailed information about process resource utilization (<vtimes.h>). 240Sstevel@tonic-gate */ 250Sstevel@tonic-gate 260Sstevel@tonic-gate #ifndef _POSIX_SOURCE 270Sstevel@tonic-gate #define __wait wait 280Sstevel@tonic-gate #define w_termsig __w_termsig 290Sstevel@tonic-gate #define w_coredump __w_coredump 300Sstevel@tonic-gate #define w_retcode __w_retcode 310Sstevel@tonic-gate #define w_stopval __w_stopval 320Sstevel@tonic-gate #define w_stopsig __w_stopsig 330Sstevel@tonic-gate #define WSTOPPED _WSTOPPED 34722Smuffin #endif /* !_POSIX_SOURCE */ 350Sstevel@tonic-gate 360Sstevel@tonic-gate /* 370Sstevel@tonic-gate * Structure of the information in the first word returned by both 380Sstevel@tonic-gate * wait and wait3. If w_stopval==WSTOPPED, then the second structure 390Sstevel@tonic-gate * describes the information returned, else the first. See WUNTRACED below. 400Sstevel@tonic-gate */ 410Sstevel@tonic-gate union __wait { 420Sstevel@tonic-gate int w_status; /* used in syscall */ 430Sstevel@tonic-gate /* 440Sstevel@tonic-gate * Terminated process status. 450Sstevel@tonic-gate */ 460Sstevel@tonic-gate struct { 470Sstevel@tonic-gate unsigned short w_Fill1:16; /* high 16 bits unused */ 480Sstevel@tonic-gate unsigned short w_Retcode:8; /* exit code if w_termsig==0 */ 490Sstevel@tonic-gate unsigned short w_Coredump:1; /* core dump indicator */ 500Sstevel@tonic-gate unsigned short w_Termsig:7; /* termination signal */ 510Sstevel@tonic-gate } w_T; 520Sstevel@tonic-gate /* 530Sstevel@tonic-gate * Stopped process status. Returned 540Sstevel@tonic-gate * only for traced children unless requested 550Sstevel@tonic-gate * with the WUNTRACED option bit. 560Sstevel@tonic-gate */ 570Sstevel@tonic-gate struct { 580Sstevel@tonic-gate unsigned short w_Fill2:16; /* high 16 bits unused */ 590Sstevel@tonic-gate unsigned short w_Stopsig:8; /* signal that stopped us */ 600Sstevel@tonic-gate unsigned short w_Stopval:8; /* == W_STOPPED if stopped */ 610Sstevel@tonic-gate } w_S; 620Sstevel@tonic-gate }; 630Sstevel@tonic-gate #define __w_termsig w_T.w_Termsig 640Sstevel@tonic-gate #define __w_coredump w_T.w_Coredump 650Sstevel@tonic-gate #define __w_retcode w_T.w_Retcode 660Sstevel@tonic-gate #define __w_stopval w_S.w_Stopval 670Sstevel@tonic-gate #define __w_stopsig w_S.w_Stopsig 680Sstevel@tonic-gate #define _WSTOPPED 0177 /* value of s.stopval if process is stopped */ 690Sstevel@tonic-gate 700Sstevel@tonic-gate /* 710Sstevel@tonic-gate * Option bits for the second argument of wait3. WNOHANG causes the 720Sstevel@tonic-gate * wait to not hang if there are no stopped or terminated processes, rather 730Sstevel@tonic-gate * returning an error indication in this case (pid==0). WUNTRACED 740Sstevel@tonic-gate * indicates that the caller should receive status about untraced children 750Sstevel@tonic-gate * which stop due to signals. If children are stopped and a wait without 760Sstevel@tonic-gate * this option is done, it is as though they were still running... nothing 770Sstevel@tonic-gate * about them is returned. 780Sstevel@tonic-gate */ 790Sstevel@tonic-gate #define WNOHANG 1 /* dont hang in wait */ 800Sstevel@tonic-gate #define WUNTRACED 2 /* tell about stopped, untraced children */ 810Sstevel@tonic-gate 820Sstevel@tonic-gate #define WIFSTOPPED(x) (((union __wait*)&(x))->__w_stopval == _WSTOPPED) 830Sstevel@tonic-gate #define WIFSIGNALED(x) (((union __wait*)&(x))->__w_stopval != _WSTOPPED && \ 840Sstevel@tonic-gate ((union __wait*)&(x))->__w_termsig != 0) 850Sstevel@tonic-gate #define WIFEXITED(x) (((union __wait*)&(x))->__w_stopval != _WSTOPPED && \ 860Sstevel@tonic-gate ((union __wait*)&(x))->__w_termsig == 0) 870Sstevel@tonic-gate #define WEXITSTATUS(x) (((union __wait*)&(x))->__w_retcode) 880Sstevel@tonic-gate #define WTERMSIG(x) (((union __wait*)&(x))->__w_termsig) 890Sstevel@tonic-gate #define WSTOPSIG(x) (((union __wait*)&(x))->__w_stopsig) 900Sstevel@tonic-gate 910Sstevel@tonic-gate #include <sys/stdtypes.h> 920Sstevel@tonic-gate 930Sstevel@tonic-gate pid_t wait(/* int *loc */); 940Sstevel@tonic-gate pid_t waitpid(/* pid_t pid, int *loc, int opts */); 950Sstevel@tonic-gate 960Sstevel@tonic-gate #endif /* !__sys_wait_h */ 97