1 /* $NetBSD: wwchild.c,v 1.8 2006/12/18 20:04:55 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Edward Wang at The University of California, Berkeley. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)wwchild.c 8.1 (Berkeley) 6/6/93"; 39 #else 40 __RCSID("$NetBSD: wwchild.c,v 1.8 2006/12/18 20:04:55 christos Exp $"); 41 #endif 42 #endif /* not lint */ 43 44 #include <sys/types.h> 45 #include <sys/wait.h> 46 #include <errno.h> 47 #include "ww.h" 48 49 void 50 wwchild(int dummy __unused) 51 { 52 int olderrno; 53 struct ww **wp; 54 int status; 55 int pid; 56 char collected = 0; 57 58 olderrno = errno; 59 while ((pid = 60 wait3(&status, WNOHANG|WUNTRACED, (struct rusage *)0)) > 0) { 61 for (wp = wwindex; wp < &wwindex[NWW]; wp++) { 62 if (*wp && (*wp)->ww_state == WWS_HASPROC 63 && (*wp)->ww_pid == pid) { 64 (*wp)->ww_state = WWS_DEAD; 65 collected = 1; 66 break; 67 } 68 } 69 } 70 errno = olderrno; 71 /* jump out of wwiomux when somebody dies */ 72 if (collected) 73 wwsetintr(); 74 } 75