GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/ntpd/util.c Lines: 0 71 0.0 %
Date: 2017-11-13 Branches: 0 31 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: util.c,v 1.24 2017/03/01 00:56:30 gsoares Exp $ */
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/*
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 * Copyright (c) 2004 Alexander Guy <alexander.guy@andern.org>
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 *
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 * Permission to use, copy, modify, and distribute this software for any
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 * purpose with or without fee is hereby granted, provided that the above
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 * copyright notice and this permission notice appear in all copies.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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 */
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#include <fcntl.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <unistd.h>
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#include "ntpd.h"
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double
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gettime_corrected(void)
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{
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	return (gettime() + getoffset());
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}
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double
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getoffset(void)
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{
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	struct timeval	tv;
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	if (adjtime(NULL, &tv) == -1)
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		return (0.0);
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	return (tv.tv_sec + 1.0e-6 * tv.tv_usec);
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}
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double
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gettime(void)
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{
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	struct timeval	tv;
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	if (gettimeofday(&tv, NULL) == -1)
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		fatal("gettimeofday");
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	return (gettime_from_timeval(&tv));
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}
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double
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gettime_from_timeval(struct timeval *tv)
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{
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	/*
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	 * Account for overflow on OSes that have a 32-bit time_t.
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	 */
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	return ((uint64_t)tv->tv_sec + JAN_1970 + 1.0e-6 * tv->tv_usec);
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}
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time_t
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getmonotime(void)
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{
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	struct timespec	ts;
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	if (clock_gettime(CLOCK_MONOTONIC, &ts) != 0)
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		fatal("clock_gettime");
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	return (ts.tv_sec);
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}
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void
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d_to_tv(double d, struct timeval *tv)
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{
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	tv->tv_sec = d;
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	tv->tv_usec = (d - tv->tv_sec) * 1000000;
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	while (tv->tv_usec < 0) {
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		tv->tv_usec += 1000000;
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		tv->tv_sec -= 1;
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	}
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}
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double
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lfp_to_d(struct l_fixedpt lfp)
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{
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	double	ret;
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	lfp.int_partl = ntohl(lfp.int_partl);
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	lfp.fractionl = ntohl(lfp.fractionl);
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	ret = (double)(lfp.int_partl) + ((double)lfp.fractionl / UINT_MAX);
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	return (ret);
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}
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struct l_fixedpt
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d_to_lfp(double d)
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{
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	struct l_fixedpt	lfp;
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	lfp.int_partl = htonl((u_int32_t)d);
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	lfp.fractionl = htonl((u_int32_t)((d - (u_int32_t)d) * UINT_MAX));
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	return (lfp);
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}
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double
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sfp_to_d(struct s_fixedpt sfp)
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{
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	double	ret;
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	sfp.int_parts = ntohs(sfp.int_parts);
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	sfp.fractions = ntohs(sfp.fractions);
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	ret = (double)(sfp.int_parts) + ((double)sfp.fractions / USHRT_MAX);
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	return (ret);
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}
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struct s_fixedpt
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d_to_sfp(double d)
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{
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	struct s_fixedpt	sfp;
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	sfp.int_parts = htons((u_int16_t)d);
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	sfp.fractions = htons((u_int16_t)((d - (u_int16_t)d) * USHRT_MAX));
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	return (sfp);
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}
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char *
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print_rtable(int r)
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{
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	static char b[11];
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	b[0] = 0;
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	if (r > 0)
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		snprintf(b, sizeof(b), "rtable %d", r);
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	return (b);
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}
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const char *
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log_sockaddr(struct sockaddr *sa)
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{
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	static char	buf[NI_MAXHOST];
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	if (getnameinfo(sa, SA_LEN(sa), buf, sizeof(buf), NULL, 0,
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	    NI_NUMERICHOST))
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		return ("(unknown)");
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	else
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		return (buf);
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}
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pid_t
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start_child(char *pname, int cfd, int argc, char **argv)
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{
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	char		**nargv;
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	int		  nargc, i;
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	pid_t		  pid;
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	/* Prepare the child process new argv. */
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	nargv = calloc(argc + 3, sizeof(char *));
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	if (nargv == NULL)
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		fatal("%s: calloc", __func__);
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	/* Copy the program name first. */
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	nargc = 0;
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	nargv[nargc++] = argv[0];
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	/* Set the process name and copy the original args. */
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	nargv[nargc++] = "-P";
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	nargv[nargc++] = pname;
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	for (i = 1; i < argc; i++)
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		nargv[nargc++] = argv[i];
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	nargv[nargc] = NULL;
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	switch (pid = fork()) {
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	case -1:
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		fatal("%s: fork", __func__);
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		break;
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	case 0:
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		/* Prepare the parent socket and execute. */
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		if (cfd != PARENT_SOCK_FILENO) {
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			if (dup2(cfd, PARENT_SOCK_FILENO) == -1)
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				fatal("dup2");
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		} else if (fcntl(cfd, F_SETFD, 0) == -1)
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			fatal("fcntl");
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		execvp(argv[0], nargv);
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		fatal("%s: execvp", __func__);
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		break;
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	default:
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		/* Close child's socket end. */
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		close(cfd);
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		break;
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	}
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	free(nargv);
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	return (pid);
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}
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int
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sanitize_argv(int *argc, char ***argv)
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{
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	char		**nargv;
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	int		  nargc;
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	int		  i;
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	/*
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	 * We need at least three arguments:
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	 * Example: '/usr/sbin/ntpd' '-P' 'foobar'.
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	 */
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	if (*argc < 3)
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		return (-1);
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	*argc -= 2;
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	/* Allocate new arguments vector and copy pointers. */
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	nargv = calloc((*argc) + 1, sizeof(char *));
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	if (nargv == NULL)
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		return (-1);
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	nargc = 0;
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	nargv[nargc++] = (*argv)[0];
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	for (i = 1; i < *argc; i++)
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		nargv[nargc++] = (*argv)[i + 2];
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	nargv[nargc] = NULL;
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	*argv = nargv;
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	return (0);
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}