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/*
* Copyright (c) 2023 Darren Tucker <dtucker@openssh.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $OpenBSD: timestamp.c,v 1.1 2023/03/01 09:29:32 dtucker Exp $ */
/*
* Print a microsecond-granularity timestamp to stdout in an ISO8601-ish
* format, which we can then use as the first component of the log file
* so that they'll sort into chronological order.
*/
#include <sys/time.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int
main(void)
{
struct timeval tv;
struct tm *tm;
char buf[1024];
if (gettimeofday(&tv, NULL) != 0)
exit(1);
if ((tm = localtime(&tv.tv_sec)) == NULL)
exit(2);
if (strftime(buf, sizeof buf, "%Y%m%dT%H%M%S", tm) <= 0)
exit(3);
printf("%s.%06d\n", buf, (int)tv.tv_usec);
exit(0);
}
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