2017-10-19 11:14:47 +00:00
|
|
|
#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)
|
|
|
|
|
2017-10-19 11:14:48 +00:00
|
|
|
#if __BITS_PER_LONG == 64
|
|
|
|
|
|
|
|
/* timespec64 is defined as timespec here */
|
|
|
|
static inline struct timespec timespec64_to_timespec(const struct timespec64 ts64)
|
|
|
|
{
|
|
|
|
return ts64;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline struct timespec64 timespec_to_timespec64(const struct timespec ts)
|
|
|
|
{
|
|
|
|
return ts;
|
|
|
|
}
|
|
|
|
|
|
|
|
# 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;
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2017-10-19 11:14:47 +00:00
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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;
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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;
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* 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;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* 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;
|
|
|
|
}
|
|
|
|
|
2017-10-19 11:14:48 +00:00
|
|
|
#endif
|
|
|
|
|
2017-10-19 11:14:47 +00:00
|
|
|
/**
|
|
|
|
* 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);
|
|
|
|
}
|
|
|
|
|
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* 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
|