FreeBSD/common/libdm.c

#include	<time.h>
#include	<sys/time.h>
#include	<stdlib.h>
#include	<stdio.h>
#include	<unistd.h>

void printdate(FILE *fd)
{
	struct timespec tp;
	char buf[64U] = "!DATE!";
	size_t tail;

	if (!clock_gettime(CLOCK_REALTIME, &tp)) {
		tail = strftime(buf, sizeof buf, "%x %X", localtime(&tp.tv_sec));

		if ((tail > 0) && (sizeof buf < tail)) {
			snprintf(buf + tail, (sizeof buf) - tail, ".%03ld", (tp.tv_nsec / 1000000));
		}
	}

	fprintf(fd, "%s: ", buf);
}