39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
// Public NTLite time ABI declarations shared between kernel, drivers, and user mode.
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#pragma once
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#include <stddef.h>
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#include <stdint.h>
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#define SYS_TIME_FLAG_VALID 0x0001u
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#define SYS_TIME_FLAG_TZ_KNOWN 0x0002u
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#define SYS_TIME_FLAG_UEFI 0x0004u
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#define SYS_TIME_FLAG_FALLBACK 0x0008u
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#define SYS_TIME_FLAG_RTC 0x0010u
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#define SYS_TIME_FLAG_DAYLIGHT 0x0020u
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#define SYS_TIME_UNSPECIFIED_TZ 2047
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// Calendar wall-clock time maintained by the kernel. DayOfWeek uses the
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// Win32 convention: 0 = Sunday, 1 = Monday, ... 6 = Saturday.
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// TimeZoneMinutes is minutes east of UTC for the returned local calendar.
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// EpochSeconds is UTC seconds since 1970-01-01 00:00:00.
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typedef struct SYS_SYSTEM_TIME {
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uint16_t Year;
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uint8_t Month;
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uint8_t Day;
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uint8_t Hour;
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uint8_t Minute;
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uint8_t Second;
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uint8_t DayOfWeek;
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uint16_t Millisecond;
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uint16_t Flags;
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uint32_t Nanosecond;
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int16_t TimeZoneMinutes;
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uint16_t Reserved0;
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uint64_t EpochSeconds;
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uint64_t TickMicroseconds;
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} SYS_SYSTEM_TIME;
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// File metadata and time syscalls share this fixed wall-clock representation.
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_Static_assert(offsetof(SYS_SYSTEM_TIME, EpochSeconds) == 24u, "SYS_SYSTEM_TIME EpochSeconds offset changed");
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_Static_assert(sizeof(SYS_SYSTEM_TIME) == 40u, "SYS_SYSTEM_TIME ABI size changed");
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