49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
/*
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* Copyright (c) 1983 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that: (1) source distributions retain this entire copyright
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* notice and comment, and (2) distributions including binaries display
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* the following acknowledgement: ``This product includes software
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* developed by the University of California, Berkeley and its contributors''
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* in the documentation or other materials provided with the distribution
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* and in all advertising materials mentioning features or use of this
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* software. Neither the name of the University nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)alarm.c 5.4 (Berkeley) 6/1/90";
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#endif /* LIBC_SCCS and not lint */
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#define _KERNEL
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#include "ixemul.h"
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/*
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* Backwards compatible alarm.
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*/
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#include <sys/time.h>
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u_int alarm(u_int secs)
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{
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struct itimerval it, oitv;
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register struct itimerval *itp = ⁢
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timerclear(&itp->it_interval);
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itp->it_value.tv_sec = secs;
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itp->it_value.tv_usec = 0;
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if (syscall (SYS_setitimer, ITIMER_REAL, itp, &oitv) < 0)
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return (-1);
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if (oitv.it_value.tv_usec)
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oitv.it_value.tv_sec++;
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return oitv.it_value.tv_sec;
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}
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