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Release 4.16 include/linux/time32.h

Directory: include/linux
#ifndef _LINUX_TIME32_H

#define _LINUX_TIME32_H
/*
 * These are all interfaces based on the old time_t definition
 * that overflows in 2038 on 32-bit architectures. New code
 * should use the replacements based on time64_t and timespec64.
 *
 * Any interfaces in here that become unused as we migrate
 * code to time64_t should get removed.
 */

#include <linux/time64.h>


#define TIME_T_MAX	(time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1)

#if __BITS_PER_LONG == 64

/* timespec64 is defined as timespec here */

static inline struct timespec timespec64_to_timespec(const struct timespec64 ts64) { return ts64; }

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static inline struct timespec64 timespec_to_timespec64(const struct timespec ts) { return ts; }

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# define timespec_equal timespec64_equal # define timespec_compare timespec64_compare # define set_normalized_timespec set_normalized_timespec64 # define timespec_add timespec64_add # define timespec_sub timespec64_sub # define timespec_valid timespec64_valid # define timespec_valid_strict timespec64_valid_strict # define timespec_to_ns timespec64_to_ns # define ns_to_timespec ns_to_timespec64 # define timespec_add_ns timespec64_add_ns #else
static inline struct timespec timespec64_to_timespec(const struct timespec64 ts64) { struct timespec ret; ret.tv_sec = (time_t)ts64.tv_sec; ret.tv_nsec = ts64.tv_nsec; return ret; }

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static inline struct timespec64 timespec_to_timespec64(const struct timespec ts) { struct timespec64 ret; ret.tv_sec = ts.tv_sec; ret.tv_nsec = ts.tv_nsec; return ret; }

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static inline int timespec_equal(const struct timespec *a, const struct timespec *b) { return (a->tv_sec == b->tv_sec) && (a->tv_nsec == b->tv_nsec); }

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/* * lhs < rhs: return <0 * lhs == rhs: return 0 * lhs > rhs: return >0 */
static inline int timespec_compare(const struct timespec *lhs, const struct timespec *rhs) { if (lhs->tv_sec < rhs->tv_sec) return -1; if (lhs->tv_sec > rhs->tv_sec) return 1; return lhs->tv_nsec - rhs->tv_nsec; }

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extern void set_normalized_timespec(struct timespec *ts, time_t sec, s64 nsec);
static inline struct timespec timespec_add(struct timespec lhs, struct timespec rhs) { struct timespec ts_delta; set_normalized_timespec(&ts_delta, lhs.tv_sec + rhs.tv_sec, lhs.tv_nsec + rhs.tv_nsec); return ts_delta; }

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/* * sub = lhs - rhs, in normalized form */
static inline struct timespec timespec_sub(struct timespec lhs, struct timespec rhs) { struct timespec ts_delta; set_normalized_timespec(&ts_delta, lhs.tv_sec - rhs.tv_sec, lhs.tv_nsec - rhs.tv_nsec); return ts_delta; }

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/* * Returns true if the timespec is norm, false if denorm: */
static inline bool timespec_valid(const struct timespec *ts) { /* Dates before 1970 are bogus */ if (ts->tv_sec < 0) return false; /* Can't have more nanoseconds then a second */ if ((unsigned long)ts->tv_nsec >= NSEC_PER_SEC) return false; return true; }

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static inline bool timespec_valid_strict(const struct timespec *ts) { if (!timespec_valid(ts)) return false; /* Disallow values that could overflow ktime_t */ if ((unsigned long long)ts->tv_sec >= KTIME_SEC_MAX) return false; return true; }

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/** * timespec_to_ns - Convert timespec to nanoseconds * @ts: pointer to the timespec variable to be converted * * Returns the scalar nanosecond representation of the timespec * parameter. */
static inline s64 timespec_to_ns(const struct timespec *ts) { return ((s64) ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec; }

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/** * ns_to_timespec - Convert nanoseconds to timespec * @nsec: the nanoseconds value to be converted * * Returns the timespec representation of the nsec parameter. */ extern struct timespec ns_to_timespec(const s64 nsec); /** * timespec_add_ns - Adds nanoseconds to a timespec * @a: pointer to timespec to be incremented * @ns: unsigned nanoseconds value to be added * * This must always be inlined because its used from the x86-64 vdso, * which cannot call other kernel functions. */
static __always_inline void timespec_add_ns(struct timespec *a, u64 ns) { a->tv_sec += __iter_div_u64_rem(a->tv_nsec + ns, NSEC_PER_SEC, &ns); a->tv_nsec = ns; }

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#endif /** * time_to_tm - converts the calendar time to local broken-down time * * @totalsecs the number of seconds elapsed since 00:00:00 on January 1, 1970, * Coordinated Universal Time (UTC). * @offset offset seconds adding to totalsecs. * @result pointer to struct tm variable to receive broken-down time */
static inline void time_to_tm(time_t totalsecs, int offset, struct tm *result) { time64_to_tm(totalsecs, offset, result); }

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static inline unsigned long mktime(const unsigned int year, const unsigned int mon, const unsigned int day, const unsigned int hour, const unsigned int min, const unsigned int sec) { return mktime64(year, mon, day, hour, min, sec); }

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static inline bool timeval_valid(const struct timeval *tv) { /* Dates before 1970 are bogus */ if (tv->tv_sec < 0) return false; /* Can't have more microseconds then a second */ if (tv->tv_usec < 0 || tv->tv_usec >= USEC_PER_SEC) return false; return true; }

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extern struct timespec timespec_trunc(struct timespec t, unsigned int gran); /** * timeval_to_ns - Convert timeval to nanoseconds * @ts: pointer to the timeval variable to be converted * * Returns the scalar nanosecond representation of the timeval * parameter. */
static inline s64 timeval_to_ns(const struct timeval *tv) { return ((s64) tv->tv_sec * NSEC_PER_SEC) + tv->tv_usec * NSEC_PER_USEC; }

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/** * ns_to_timeval - Convert nanoseconds to timeval * @nsec: the nanoseconds value to be converted * * Returns the timeval representation of the nsec parameter. */ extern struct timeval ns_to_timeval(const s64 nsec); #endif

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Directory: include/linux
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