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