74 lines
1.2 KiB
C
Executable File
74 lines
1.2 KiB
C
Executable File
/* Copyright (c) 1988 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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#ident "@(#)waitpid.c 1.6 92/07/14 SMI" /* SVr4.0 1.2 */
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#ifdef __STDC__
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#pragma weak waitpid = _waitpid
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#endif
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#include "synonyms.h"
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#include <wait.h>
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pid_t
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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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idtype_t idtype;
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id_t id;
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siginfo_t info;
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int error;
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if (pid > 0) {
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idtype = P_PID;
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id = pid;
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} else if (pid < -1) {
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idtype = P_PGID;
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id = -pid;
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} else if (pid == -1) {
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idtype = P_ALL;
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id = 0;
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} else {
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idtype = P_PGID;
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id = getpgid(0);
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}
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options |= (WEXITED|WTRAPPED);
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if ((error = waitid(idtype, id, &info, options)) < 0)
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return error;
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if (stat_loc) {
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register stat = (info.si_status & 0377);
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switch (info.si_code) {
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case CLD_EXITED:
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stat <<= 8;
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break;
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case CLD_DUMPED:
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stat |= WCOREFLG;
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break;
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case CLD_KILLED:
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break;
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case CLD_TRAPPED:
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case CLD_STOPPED:
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stat <<= 8;
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stat |= WSTOPFLG;
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break;
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case CLD_CONTINUED:
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stat = WCONTFLG;
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break;
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}
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*stat_loc = stat;
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}
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return info.si_pid;
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}
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