32 lines
642 B
C
32 lines
642 B
C
#if !defined(lint) && defined(SCCSIDS)
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static char sccsid[] = "@(#)waitpid.c 1.1 94/10/31 Copyr 1989 Sun Micro";
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#endif
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#include <sys/types.h>
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#include <sys/wait.h>
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/*
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* posix meanings for pid
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* -1 any process
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* > 0 that particular process
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* 0 any process in my pgrp
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* < -1 any process in pgrp |pid|
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*
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* wait4 meanings for pid
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* 0 any process
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* > 0 that process
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* < 0 any process in that process group
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*/
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pid_t waitpid(pid, stat_loc, options)
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pid_t pid;
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int *stat_loc;
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int options;
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{
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if (pid == -1)
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pid = 0;
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else if (!pid)
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pid = -getpgrp(0);
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return wait4(pid, stat_loc, options, (struct rusage*)0);
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}
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