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Annotation of 43BSD/usr.lib/libU77/wait_.c, revision 1.1.1.1

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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