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Annotation of src/usr.bin/window/wwchild.c, Revision 1.8

1.8     ! tedu        1: /*     $OpenBSD: wwchild.c,v 1.7 2003/06/03 02:56:23 millert Exp $     */
1.1       deraadt     2: /*     $NetBSD: wwchild.c,v 1.3 1995/09/28 10:35:13 tls Exp $  */
                      3:
                      4: /*
                      5:  * Copyright (c) 1983, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      7:  *
                      8:  * This code is derived from software contributed to Berkeley by
                      9:  * Edward Wang at The University of California, Berkeley.
                     10:  *
                     11:  * Redistribution and use in source and binary forms, with or without
                     12:  * modification, are permitted provided that the following conditions
                     13:  * are met:
                     14:  * 1. Redistributions of source code must retain the above copyright
                     15:  *    notice, this list of conditions and the following disclaimer.
                     16:  * 2. Redistributions in binary form must reproduce the above copyright
                     17:  *    notice, this list of conditions and the following disclaimer in the
                     18:  *    documentation and/or other materials provided with the distribution.
1.7       millert    19:  * 3. Neither the name of the University nor the names of its contributors
1.1       deraadt    20:  *    may be used to endorse or promote products derived from this software
                     21:  *    without specific prior written permission.
                     22:  *
                     23:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     24:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     25:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     26:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     27:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     28:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     29:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     30:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     31:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     32:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     33:  * SUCH DAMAGE.
                     34:  */
                     35:
                     36: #ifndef lint
                     37: #if 0
                     38: static char sccsid[] = "@(#)wwchild.c  8.1 (Berkeley) 6/6/93";
                     39: #else
1.8     ! tedu       40: static char rcsid[] = "$OpenBSD: wwchild.c,v 1.7 2003/06/03 02:56:23 millert Exp $";
1.1       deraadt    41: #endif
                     42: #endif /* not lint */
                     43:
                     44: #include "ww.h"
                     45: #include <sys/types.h>
                     46: #include <sys/wait.h>
                     47:
1.8     ! tedu       48: #include <errno.h>
        !            49:
1.1       deraadt    50: void
                     51: wwchild()
                     52: {
                     53:        int olderrno;
1.5       mpech      54:        struct ww **wp;
1.4       deraadt    55:        int w;
1.6       mpech      56:        pid_t pid;
1.1       deraadt    57:        char collected = 0;
                     58:
                     59:        olderrno = errno;
                     60:        while ((pid =
1.4       deraadt    61:            wait3(&w, WNOHANG|WUNTRACED, (struct rusage *)0)) > 0) {
1.1       deraadt    62:                for (wp = wwindex; wp < &wwindex[NWW]; wp++) {
                     63:                        if (*wp && (*wp)->ww_state == WWS_HASPROC
                     64:                            && (*wp)->ww_pid == pid) {
                     65:                                (*wp)->ww_state = WWS_DEAD;
                     66:                                collected = 1;
                     67:                                break;
                     68:                        }
                     69:                }
                     70:        }
                     71:        errno = olderrno;
                     72:        /* jump out of wwiomux when somebody dies */
                     73:        if (collected)
                     74:                wwsetintr();
                     75: }