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Annotation of 43BSDTahoe/usr.lib/libU77/wait_.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)wait_.c     5.1     6/7/85
        !             7:  */
        !             8: 
        !             9: /*
        !            10:  * wait for a child to die
        !            11:  *
        !            12:  * calling sequence:
        !            13:  *     integer wait, status, chilid
        !            14:  *     chilid = wait(status)
        !            15:  * where:
        !            16:  *     chilid will be  - >0 if child process id
        !            17:  *                     - <0 if (negative of) system error code
        !            18:  *     status will contain the exit status of the child
        !            19:  *             (see wait(2))
        !            20:  */
        !            21: 
        !            22: extern int errno;
        !            23: 
        !            24: long wait_(status)
        !            25: long *status;
        !            26: {
        !            27:        int stat;
        !            28:        int chid = wait(&stat);
        !            29:        if (chid < 0)
        !            30:                return((long)(-errno));
        !            31:        *status = (long)stat;
        !            32:        return((long)chid);
        !            33: }

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