32cad1ffb8
Headers in include/sysemu/ are not only related to system *emulation*, they are also used by virtualization. Rename as system/ which is clearer. Files renamed manually then mechanical change using sed tool. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Tested-by: Lei Yang <leiyang@redhat.com> Message-Id: <20241203172445.28576-1-philmd@linaro.org>
59 lines
2.4 KiB
C
59 lines
2.4 KiB
C
/*
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* RTC configuration and clock read
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*
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* Copyright (c) 2003-2021 QEMU contributors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef SYSTEM_RTC_H
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#define SYSTEM_RTC_H
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/**
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* qemu_get_timedate: Get the current RTC time
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* @tm: struct tm to fill in with RTC time
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* @offset: offset in seconds to adjust the RTC time by before
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* converting to struct tm format.
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*
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* This function fills in @tm with the current RTC time, as adjusted
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* by @offset (for example, if @offset is 3600 then the returned time/date
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* will be one hour further ahead than the current RTC time).
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*
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* The usual use is by RTC device models, which should call this function
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* to find the time/date value that they should return to the guest
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* when it reads the RTC registers.
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*
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* The behaviour of the clock whose value this function returns will
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* depend on the -rtc command line option passed by the user.
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*/
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void qemu_get_timedate(struct tm *tm, time_t offset);
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/**
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* qemu_timedate_diff: Return difference between a struct tm and the RTC
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* @tm: struct tm containing the date/time to compare against
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*
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* Returns the difference in seconds between the RTC clock time
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* and the date/time specified in @tm. For example, if @tm specifies
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* a timestamp one hour further ahead than the current RTC time
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* then this function will return 3600.
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*/
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time_t qemu_timedate_diff(struct tm *tm);
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#endif
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