fs/ntfs/time.h

1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3  * time.h - NTFS time conversion functions.  Part of the Linux-NTFS project.
5  * Copyright (c) 2001-2005 Anton Altaparmakov
14 #include "endian.h"
19  * utc2ntfs - convert Linux UTC time to NTFS time
23  * that in little endian format.
26  * and a long tv_nsec where tv_sec is the number of 1-second intervals since
27  * 1st January 1970, 00:00:00 UTC and tv_nsec is the number of 1-nano-second
31  * measured as the number of 100-nano-second intervals since 1st January 1601,
37 	 * Convert the seconds to 100ns intervals, add the nano-seconds  in utc2ntfs()
45  * get_current_ntfs_time - get the current time in little endian NTFS format
48  * NTFS time and return that in little endian format.
59  * ntfs2utc - convert NTFS time to Linux time
60  * @time:	NTFS time (little endian) to convert to Linux UTC
62  * Convert the little endian NTFS time @time to its corresponding Linux UTC
66  * and a long tv_nsec where tv_sec is the number of 1-second intervals since
67  * 1st January 1970, 00:00:00 UTC and tv_nsec is the number of 1-nano-second
71  * measured as the number of 100 nano-second intervals since 1st January 1601,
79 	u64 t = (u64)(sle64_to_cpu(time) - NTFS_TIME_OFFSET);  in ntfs2utc()
81 	 * Convert the time to 1-second intervals and the remainder to  in ntfs2utc()
82 	 * 1-nano-second intervals.  in ntfs2utc()