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+/***
+ 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>
+
+ systemd 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.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+#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 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 time_is_today(const time_t *t, struct timeval *now);
+int time_is_thisyear(const time_t *t, struct timeval *now);
+
+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
+
+int parse_date(struct timespec *, char const *, struct timespec const *);
+
+#endif /* UTIL_LINUX_TIME_UTIL_H */