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/*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* First set of functions in this file are part of systemd, and were
* copied to util-linux at August 2013.
*
* Copyright 2010 Lennart Poettering
* Copyright (C) 2014 Karel Zak <kzak@redhat.com>
*
* This is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*/
#ifndef UTIL_LINUX_TIME_UTIL_H
#define UTIL_LINUX_TIME_UTIL_H
#include <stdio.h>
#include <inttypes.h>
#include <sys/time.h>
typedef uint64_t usec_t;
typedef uint64_t nsec_t;
#define MSEC_PER_SEC 1000ULL
#define USEC_PER_SEC 1000000ULL
#define USEC_PER_MSEC 1000ULL
#define NSEC_PER_SEC 1000000000ULL
#define NSEC_PER_MSEC 1000000ULL
#define NSEC_PER_USEC 1000ULL
#define USEC_PER_MINUTE (60ULL*USEC_PER_SEC)
#define NSEC_PER_MINUTE (60ULL*NSEC_PER_SEC)
#define USEC_PER_HOUR (60ULL*USEC_PER_MINUTE)
#define NSEC_PER_HOUR (60ULL*NSEC_PER_MINUTE)
#define USEC_PER_DAY (24ULL*USEC_PER_HOUR)
#define NSEC_PER_DAY (24ULL*NSEC_PER_HOUR)
#define USEC_PER_WEEK (7ULL*USEC_PER_DAY)
#define NSEC_PER_WEEK (7ULL*NSEC_PER_DAY)
#define USEC_PER_MONTH (2629800ULL*USEC_PER_SEC)
#define NSEC_PER_MONTH (2629800ULL*NSEC_PER_SEC)
#define USEC_PER_YEAR (31557600ULL*USEC_PER_SEC)
#define NSEC_PER_YEAR (31557600ULL*NSEC_PER_SEC)
#define FORMAT_TIMESTAMP_MAX ((4*4+1)+11+9+4+1) /* weekdays can be unicode */
#define FORMAT_TIMESTAMP_RELATIVE_MAX 256
#define FORMAT_TIMESPAN_MAX 64
int parse_timestamp(const char *t, usec_t *usec);
int get_gmtoff(const struct tm *tp);
/* flags and masks for strxxx_iso() functions */
enum {
ISO_DATE = (1 << 0),
ISO_TIME = (1 << 1),
ISO_TIMEZONE = (1 << 2),
ISO_DOTUSEC = (1 << 3),
ISO_COMMAUSEC = (1 << 4),
ISO_T = (1 << 5),
ISO_GMTIME = (1 << 6),
ISO_TIMESTAMP = ISO_DATE | ISO_TIME | ISO_TIMEZONE,
ISO_TIMESTAMP_T = ISO_TIMESTAMP | ISO_T,
ISO_TIMESTAMP_DOT = ISO_TIMESTAMP | ISO_DOTUSEC,
ISO_TIMESTAMP_DOT_T = ISO_TIMESTAMP_DOT | ISO_T,
ISO_TIMESTAMP_COMMA = ISO_TIMESTAMP | ISO_COMMAUSEC,
ISO_TIMESTAMP_COMMA_T = ISO_TIMESTAMP_COMMA | ISO_T,
ISO_TIMESTAMP_COMMA_G = ISO_TIMESTAMP_COMMA | ISO_GMTIME,
ISO_TIMESTAMP_COMMA_GT = ISO_TIMESTAMP_COMMA_G | ISO_T
};
#define CTIME_BUFSIZ 26
#define ISO_BUFSIZ 42
int strtimeval_iso(struct timeval *tv, int flags, char *buf, size_t bufsz);
int strtm_iso(struct tm *tm, int flags, char *buf, size_t bufsz);
int strtime_iso(const time_t *t, int flags, char *buf, size_t bufsz);
#define UL_SHORTTIME_THISYEAR_HHMM (1 << 1)
int strtime_short(const time_t *t, struct timeval *now, int flags, char *buf, size_t bufsz);
#ifndef HAVE_TIMEGM
extern time_t timegm(struct tm *tm);
#endif
static inline usec_t timeval_to_usec(const struct timeval *t)
{
return t->tv_sec * USEC_PER_SEC + t->tv_usec;
}
static inline usec_t timespec_to_usec(const struct timespec *t)
{
return t->tv_sec * USEC_PER_SEC + t->tv_nsec / NSEC_PER_USEC;
}
static inline struct timeval usec_to_timeval(usec_t t)
{
struct timeval r = {
.tv_sec = t / USEC_PER_SEC,
.tv_usec = t % USEC_PER_SEC,
};
return r;
}
#endif /* UTIL_LINUX_TIME_UTIL_H */
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