1 /* 2 * Copyright (c) 1982, 1986, 1989, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)wait.h 8.2 (Berkeley) 7/10/94 34 * $FreeBSD: src/sys/sys/wait.h,v 1.11 1999/12/29 04:24:50 peter Exp $ 35 */ 36 37 #ifndef _SYS_WAIT_H_ 38 #define _SYS_WAIT_H_ 39 40 #include <sys/cdefs.h> 41 42 /* 43 * This file holds definitions relevant to the wait4 system call 44 * and the alternate interfaces that use it (wait, wait3, waitpid). 45 */ 46 47 /* 48 * Macros to test the exit status returned by wait 49 * and extract the relevant values. 50 */ 51 #if __BSD_VISIBLE 52 #define WCOREFLAG 0200 53 #endif 54 #define _W_INT(i) (i) 55 56 #define _WSTATUS(x) (_W_INT(x) & 0177) 57 #define _WSTOPPED 0177 /* _WSTATUS if process is stopped */ 58 #define WSTOPPED _WSTOPPED 59 #define WIFSTOPPED(x) (_WSTATUS(x) == _WSTOPPED) 60 #define WSTOPSIG(x) (_W_INT(x) >> 8) 61 #define WIFSIGNALED(x) (_WSTATUS(x) != _WSTOPPED && _WSTATUS(x) != 0) 62 #define WTERMSIG(x) (_WSTATUS(x)) 63 #define WIFEXITED(x) (_WSTATUS(x) == 0) 64 #define WEXITSTATUS(x) (_W_INT(x) >> 8) 65 #define WIFCONTINUED(x) (x == 19) /* 19 == SIGCONT */ 66 #if __BSD_VISIBLE 67 #define WCOREDUMP(x) (_W_INT(x) & WCOREFLAG) 68 69 #define W_EXITCODE(ret, sig) ((ret) << 8 | (sig)) 70 #define W_STOPCODE(sig) ((sig) << 8 | _WSTOPPED) 71 #endif 72 73 /* 74 * Option bits for the third argument of wait4. WNOHANG causes the 75 * wait to not hang if there are no stopped or terminated processes, rather 76 * returning an error indication in this case (pid==0). WUNTRACED 77 * indicates that the caller should receive status about untraced children 78 * which stop due to signals. If children are stopped and a wait without 79 * this option is done, it is as though they were still running... nothing 80 * about them is returned. 81 */ 82 #define WNOHANG 1 /* don't hang in wait */ 83 #define WUNTRACED 2 /* tell about stopped, untraced children */ 84 #define WCONTINUED 4 /* Report a job control continued process. */ 85 #if __BSD_VISIBLE 86 #define WLINUXCLONE 0x80000000 /* wait for kthread spawned from linux_clone */ 87 88 /* 89 * Tokens for special values of the "pid" parameter to wait4. 90 */ 91 #define WAIT_ANY (-1) /* any process */ 92 #define WAIT_MYPGRP 0 /* any process in my process group */ 93 #endif /* __BSD_VISIBLE */ 94 95 #if !defined(_KERNEL) || defined(_KERNEL_VIRTUAL) 96 #ifndef _SYS_TYPES_H_ 97 #include <sys/types.h> 98 #endif 99 100 __BEGIN_DECLS 101 pid_t wait(int *); 102 pid_t waitpid(pid_t, int *, int); 103 #if __XSI_VISIBLE < 600 || __BSD_VISIBLE 104 struct rusage; 105 pid_t wait3(int *, int, struct rusage *); 106 #endif 107 #if __BSD_VISIBLE 108 pid_t wait4(pid_t, int *, int, struct rusage *); 109 #endif 110 __END_DECLS 111 #endif 112 113 #endif 114