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102 lines
3.1 KiB
102 lines
3.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _LINUX_TIME_H |
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#define _LINUX_TIME_H |
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# include <linux/cache.h> |
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# include <linux/math64.h> |
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# include <linux/time64.h> |
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extern struct timezone sys_tz; |
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int get_timespec64(struct timespec64 *ts, |
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const struct __kernel_timespec __user *uts); |
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int put_timespec64(const struct timespec64 *ts, |
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struct __kernel_timespec __user *uts); |
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int get_itimerspec64(struct itimerspec64 *it, |
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const struct __kernel_itimerspec __user *uit); |
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int put_itimerspec64(const struct itimerspec64 *it, |
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struct __kernel_itimerspec __user *uit); |
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extern time64_t mktime64(const unsigned int year, const unsigned int mon, |
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const unsigned int day, const unsigned int hour, |
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const unsigned int min, const unsigned int sec); |
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#ifdef CONFIG_POSIX_TIMERS |
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extern void clear_itimer(void); |
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#else |
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static inline void clear_itimer(void) {} |
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#endif |
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extern long do_utimes(int dfd, const char __user *filename, struct timespec64 *times, int flags); |
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/* |
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* Similar to the struct tm in userspace <time.h>, but it needs to be here so |
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* that the kernel source is self contained. |
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*/ |
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struct tm { |
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/* |
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* the number of seconds after the minute, normally in the range |
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* 0 to 59, but can be up to 60 to allow for leap seconds |
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*/ |
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int tm_sec; |
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/* the number of minutes after the hour, in the range 0 to 59*/ |
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int tm_min; |
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/* the number of hours past midnight, in the range 0 to 23 */ |
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int tm_hour; |
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/* the day of the month, in the range 1 to 31 */ |
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int tm_mday; |
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/* the number of months since January, in the range 0 to 11 */ |
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int tm_mon; |
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/* the number of years since 1900 */ |
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long tm_year; |
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/* the number of days since Sunday, in the range 0 to 6 */ |
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int tm_wday; |
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/* the number of days since January 1, in the range 0 to 365 */ |
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int tm_yday; |
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}; |
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void time64_to_tm(time64_t totalsecs, int offset, struct tm *result); |
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# include <linux/time32.h> |
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static inline bool itimerspec64_valid(const struct itimerspec64 *its) |
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{ |
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if (!timespec64_valid(&(its->it_interval)) || |
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!timespec64_valid(&(its->it_value))) |
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return false; |
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return true; |
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} |
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/** |
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* time_after32 - compare two 32-bit relative times |
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* @a: the time which may be after @b |
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* @b: the time which may be before @a |
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* |
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* time_after32(a, b) returns true if the time @a is after time @b. |
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* time_before32(b, a) returns true if the time @b is before time @a. |
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* |
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* Similar to time_after(), compare two 32-bit timestamps for relative |
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* times. This is useful for comparing 32-bit seconds values that can't |
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* be converted to 64-bit values (e.g. due to disk format or wire protocol |
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* issues) when it is known that the times are less than 68 years apart. |
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*/ |
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#define time_after32(a, b) ((s32)((u32)(b) - (u32)(a)) < 0) |
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#define time_before32(b, a) time_after32(a, b) |
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/** |
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* time_between32 - check if a 32-bit timestamp is within a given time range |
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* @t: the time which may be within [l,h] |
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* @l: the lower bound of the range |
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* @h: the higher bound of the range |
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* |
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* time_before32(t, l, h) returns true if @l <= @t <= @h. All operands are |
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* treated as 32-bit integers. |
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* |
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* Equivalent to !(time_before32(@t, @l) || time_after32(@t, @h)). |
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*/ |
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#define time_between32(t, l, h) ((u32)(h) - (u32)(l) >= (u32)(t) - (u32)(l)) |
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# include <vdso/time.h> |
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#endif
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