Systemd/src/basic/clock-util.h

/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once

/***
  This file is part of systemd.

  Copyright 2010-2012 Lennart Poettering
***/

#include <time.h>

int clock_is_localtime(const char* adjtime_path);
int clock_set_timezone(int *min);
int clock_reset_timewarp(void);
int clock_get_hwclock(struct tm *tm);
int clock_set_hwclock(const struct tm *tm);
int clock_apply_epoch(void);
Add SPDX license identifiers to source files under the LGPL This follows what the kernel is doing, c.f. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5fd54ace4721fc5ce2bb5aef6318fcf17f421460. 2017-11-18 17:09:20 +01:00			`/* SPDX-License-Identifier: LGPL-2.1+ */`
use #pragma once instead of foo*foo define guards 2013-11-18 16:58:43 +01:00			`#pragma once`
util: split-out hwclock.[ch] 2012-05-07 21:06:55 +02:00
			`/***`
			`This file is part of systemd.`

			`Copyright 2010-2012 Lennart Poettering`
			`***/`

util-lib: split out fd-related operations into fd-util.[ch] There are more than enough to deserve their own .c file, hence move them over. 2015-10-25 13:14:12 +01:00			`#include <time.h>`
Add missing includes in header files This fixes various issues found by globally reordering the include sections of all .c files. 2015-02-10 12:56:53 +01:00
clock-util: make clock_is_localtime() testable and add initial tests Add path argument to clock_is_localtime() and default to "/etc/adjtime" if it's NULL. This makes the function testable. Add test-clock: initial test cases for some scenarios, using a temporary file. This also checks the behaviour with a NULL (i. e. the system's /etc/adjtime) file. 2016-02-26 11:25:22 +01:00			`int clock_is_localtime(const char* adjtime_path);`
shared: rename hwclock.[ch] to clock-util.[ch] 2014-05-22 14:21:38 +02:00			`int clock_set_timezone(int *min);`
core: only set the kernel's timezone when the RTC runs in local time We can not reliably manage any notion of local time. Every daylight saving time change or time zone change by traveling will make the time jump, and the local time might jump backwards which creates unsolvable problems with file timestamps. We will no longer tell the kernel our local time zone and leave everything set to UTC. This will effectively turn FAT timestamps into UTC timestamps. If and only if the machine is configured to read the RTC in local time mode, the kernel's time zone will be configured, but systemd-timesysnc will disable the kernel's system time to RTC syncing. In this mode, the RTC will not be managed, and external tools like Windows bootups are expected to manage the RTC's time. https://bugs.freedesktop.org/show_bug.cgi?id=81538 2014-07-27 00:11:08 +02:00			`int clock_reset_timewarp(void);`
clock-util: clock_[sg]et_time() -> clock_[sg]et_hwclock() 2014-05-24 04:26:33 +02:00			`int clock_get_hwclock(struct tm *tm);`
			`int clock_set_hwclock(const struct tm *tm);`
resolved: apply epoch to system time from PID 1 For use in timesyncd we already defined a compile-time "epoch" value, which is based on the mtime of the NEWS file, and specifies a point in time we know lies in the past at runtime. timesyncd uses this to filter out nonsensical timestamp file data, and bump the system clock to a time that is after the build time of systemd. This patch adds similar bumping code to earliest PID 1 initialization, so that the system never continues operation with a clock that is in the 1970ies or even 1930s. 2016-02-03 18:28:40 +01:00			`int clock_apply_epoch(void);`