Commit Graph

8 Commits

Author SHA1 Message Date
Ian Lepore
ce75945d3c Use const pointers for input data not modified by clock utility functions. 2018-02-06 22:17:01 +00:00
Pedro F. Giffuni
8a36da99de sys/kern: adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 15:20:12 +00:00
Warner Losh
61f26cae7d Where appropriate, use the modern terms for the one true time base
(UTC) rather than the archaic (GMT) in comments. Except where the
comments are making fun of people doing this (and pedants who insist
on the new terms).
2014-12-21 05:07:11 +00:00
Ian Lepore
6afc723819 Fix a comment typo; conversion tables are for leap years, not leap seconds. 2014-04-20 13:37:22 +00:00
Konstantin Belousov
beb4f781a5 Fix typo.
MFC after:	3 days
2014-04-17 18:13:23 +00:00
Ed Schouten
60ae52f785 Use ISO C99 integer types in sys/kern where possible.
There are only about 100 occurences of the BSD-specific u_int*_t
datatypes in sys/kern. The ISO C99 integer types are used here more
often.
2010-06-21 09:55:56 +00:00
Poul-Henning Kamp
7ea93e912b Better naming of fattime conversion functions, they do convert to timespec
after all.

Add 'utc' argument to control if fattimestamps are on UTC or local timezone
calendar.
2006-10-24 10:27:23 +00:00
Poul-Henning Kamp
b39be1b35c Add two new functions to convert FAT filesystem format timestamps
to and from struct timespec, to replace the crummy conversion
function which have been copy&pasted into three different
filesystems already.

Apart from general crummyness as indicated by code like:

	for (year = 1970;; year++) {
		inc = year & 0x03 ? 365 : 366;
		if (days < inc)
			break;
		days -= inc;
	}

They also contain specialized crummyness which tries to compensate
for the general crummyness by caching recent conversion results,
with no regard for locking or consistency.

These replacement functions are smaller, O(1) and handle the Y2.1K
leap-year correctly.

Ideally, these functions should live in a module of their own,
which the three offending filesystems would depend on, but the
size is 877 bytes of code (on i386), so that would be false
economy.
2006-10-22 18:19:08 +00:00