mirror of
https://github.com/systemd/systemd.git
synced 2024-11-07 01:27:11 +03:00
8e8933ca0f
CC src/shared/libsystemd_shared_la-time-util.lo
src/shared/time-util.c: In function 'parse_nsec':
src/shared/time-util.c:789:25: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses]
if (!*s != 0)
^
995 lines
27 KiB
C
995 lines
27 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <time.h>
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#include <string.h>
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#include <sys/timex.h>
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#include <sys/timerfd.h>
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#include "util.h"
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#include "time-util.h"
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#include "strv.h"
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usec_t now(clockid_t clock_id) {
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struct timespec ts;
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assert_se(clock_gettime(clock_id, &ts) == 0);
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return timespec_load(&ts);
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}
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dual_timestamp* dual_timestamp_get(dual_timestamp *ts) {
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assert(ts);
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ts->realtime = now(CLOCK_REALTIME);
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ts->monotonic = now(CLOCK_MONOTONIC);
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return ts;
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}
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dual_timestamp* dual_timestamp_from_realtime(dual_timestamp *ts, usec_t u) {
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int64_t delta;
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assert(ts);
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if (u == USEC_INFINITY || u <= 0) {
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ts->realtime = ts->monotonic = u;
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return ts;
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}
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ts->realtime = u;
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delta = (int64_t) now(CLOCK_REALTIME) - (int64_t) u;
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ts->monotonic = now(CLOCK_MONOTONIC);
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if ((int64_t) ts->monotonic > delta)
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ts->monotonic -= delta;
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else
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ts->monotonic = 0;
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return ts;
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}
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dual_timestamp* dual_timestamp_from_monotonic(dual_timestamp *ts, usec_t u) {
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int64_t delta;
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assert(ts);
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if (u == USEC_INFINITY) {
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ts->realtime = ts->monotonic = USEC_INFINITY;
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return ts;
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}
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ts->monotonic = u;
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delta = (int64_t) now(CLOCK_MONOTONIC) - (int64_t) u;
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ts->realtime = now(CLOCK_REALTIME);
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if ((int64_t) ts->realtime > delta)
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ts->realtime -= delta;
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else
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ts->realtime = 0;
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return ts;
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}
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usec_t timespec_load(const struct timespec *ts) {
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assert(ts);
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if (ts->tv_sec == (time_t) -1 &&
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ts->tv_nsec == (long) -1)
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return USEC_INFINITY;
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if ((usec_t) ts->tv_sec > (UINT64_MAX - (ts->tv_nsec / NSEC_PER_USEC)) / USEC_PER_SEC)
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return USEC_INFINITY;
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return
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(usec_t) ts->tv_sec * USEC_PER_SEC +
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(usec_t) ts->tv_nsec / NSEC_PER_USEC;
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}
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struct timespec *timespec_store(struct timespec *ts, usec_t u) {
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assert(ts);
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if (u == USEC_INFINITY) {
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ts->tv_sec = (time_t) -1;
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ts->tv_nsec = (long) -1;
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return ts;
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}
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ts->tv_sec = (time_t) (u / USEC_PER_SEC);
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ts->tv_nsec = (long int) ((u % USEC_PER_SEC) * NSEC_PER_USEC);
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return ts;
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}
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usec_t timeval_load(const struct timeval *tv) {
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assert(tv);
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if (tv->tv_sec == (time_t) -1 &&
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tv->tv_usec == (suseconds_t) -1)
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return USEC_INFINITY;
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if ((usec_t) tv->tv_sec > (UINT64_MAX - tv->tv_usec) / USEC_PER_SEC)
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return USEC_INFINITY;
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return
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(usec_t) tv->tv_sec * USEC_PER_SEC +
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(usec_t) tv->tv_usec;
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}
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struct timeval *timeval_store(struct timeval *tv, usec_t u) {
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assert(tv);
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if (u == USEC_INFINITY) {
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tv->tv_sec = (time_t) -1;
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tv->tv_usec = (suseconds_t) -1;
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} else {
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tv->tv_sec = (time_t) (u / USEC_PER_SEC);
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tv->tv_usec = (suseconds_t) (u % USEC_PER_SEC);
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}
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return tv;
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}
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static char *format_timestamp_internal(char *buf, size_t l, usec_t t, bool utc) {
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struct tm tm;
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time_t sec;
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assert(buf);
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assert(l > 0);
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if (t <= 0 || t == USEC_INFINITY)
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return NULL;
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sec = (time_t) (t / USEC_PER_SEC);
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if (utc)
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gmtime_r(&sec, &tm);
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else
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localtime_r(&sec, &tm);
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if (strftime(buf, l, "%a %Y-%m-%d %H:%M:%S %Z", &tm) <= 0)
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return NULL;
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return buf;
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}
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char *format_timestamp(char *buf, size_t l, usec_t t) {
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return format_timestamp_internal(buf, l, t, false);
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}
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char *format_timestamp_utc(char *buf, size_t l, usec_t t) {
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return format_timestamp_internal(buf, l, t, true);
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}
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static char *format_timestamp_internal_us(char *buf, size_t l, usec_t t, bool utc) {
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struct tm tm;
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time_t sec;
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assert(buf);
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assert(l > 0);
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if (t <= 0 || t == USEC_INFINITY)
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return NULL;
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sec = (time_t) (t / USEC_PER_SEC);
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if (utc)
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gmtime_r(&sec, &tm);
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else
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localtime_r(&sec, &tm);
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if (strftime(buf, l, "%a %Y-%m-%d %H:%M:%S", &tm) <= 0)
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return NULL;
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snprintf(buf + strlen(buf), l - strlen(buf), ".%06llu", (unsigned long long) (t % USEC_PER_SEC));
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if (strftime(buf + strlen(buf), l - strlen(buf), " %Z", &tm) <= 0)
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return NULL;
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return buf;
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}
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char *format_timestamp_us(char *buf, size_t l, usec_t t) {
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return format_timestamp_internal_us(buf, l, t, false);
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}
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char *format_timestamp_us_utc(char *buf, size_t l, usec_t t) {
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return format_timestamp_internal_us(buf, l, t, true);
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}
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char *format_timestamp_relative(char *buf, size_t l, usec_t t) {
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const char *s;
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usec_t n, d;
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if (t <= 0 || t == USEC_INFINITY)
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return NULL;
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n = now(CLOCK_REALTIME);
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if (n > t) {
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d = n - t;
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s = "ago";
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} else {
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d = t - n;
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s = "left";
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}
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if (d >= USEC_PER_YEAR)
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snprintf(buf, l, USEC_FMT " years " USEC_FMT " months %s",
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d / USEC_PER_YEAR,
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(d % USEC_PER_YEAR) / USEC_PER_MONTH, s);
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else if (d >= USEC_PER_MONTH)
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snprintf(buf, l, USEC_FMT " months " USEC_FMT " days %s",
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d / USEC_PER_MONTH,
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(d % USEC_PER_MONTH) / USEC_PER_DAY, s);
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else if (d >= USEC_PER_WEEK)
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snprintf(buf, l, USEC_FMT " weeks " USEC_FMT " days %s",
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d / USEC_PER_WEEK,
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(d % USEC_PER_WEEK) / USEC_PER_DAY, s);
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else if (d >= 2*USEC_PER_DAY)
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snprintf(buf, l, USEC_FMT " days %s", d / USEC_PER_DAY, s);
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else if (d >= 25*USEC_PER_HOUR)
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snprintf(buf, l, "1 day " USEC_FMT "h %s",
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(d - USEC_PER_DAY) / USEC_PER_HOUR, s);
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else if (d >= 6*USEC_PER_HOUR)
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snprintf(buf, l, USEC_FMT "h %s",
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d / USEC_PER_HOUR, s);
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else if (d >= USEC_PER_HOUR)
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snprintf(buf, l, USEC_FMT "h " USEC_FMT "min %s",
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d / USEC_PER_HOUR,
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(d % USEC_PER_HOUR) / USEC_PER_MINUTE, s);
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else if (d >= 5*USEC_PER_MINUTE)
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snprintf(buf, l, USEC_FMT "min %s",
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d / USEC_PER_MINUTE, s);
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else if (d >= USEC_PER_MINUTE)
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snprintf(buf, l, USEC_FMT "min " USEC_FMT "s %s",
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d / USEC_PER_MINUTE,
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(d % USEC_PER_MINUTE) / USEC_PER_SEC, s);
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else if (d >= USEC_PER_SEC)
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snprintf(buf, l, USEC_FMT "s %s",
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d / USEC_PER_SEC, s);
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else if (d >= USEC_PER_MSEC)
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snprintf(buf, l, USEC_FMT "ms %s",
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d / USEC_PER_MSEC, s);
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else if (d > 0)
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snprintf(buf, l, USEC_FMT"us %s",
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d, s);
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else
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snprintf(buf, l, "now");
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buf[l-1] = 0;
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return buf;
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}
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char *format_timespan(char *buf, size_t l, usec_t t, usec_t accuracy) {
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static const struct {
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const char *suffix;
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usec_t usec;
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} table[] = {
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{ "y", USEC_PER_YEAR },
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{ "month", USEC_PER_MONTH },
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{ "w", USEC_PER_WEEK },
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{ "d", USEC_PER_DAY },
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{ "h", USEC_PER_HOUR },
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{ "min", USEC_PER_MINUTE },
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{ "s", USEC_PER_SEC },
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{ "ms", USEC_PER_MSEC },
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{ "us", 1 },
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};
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unsigned i;
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char *p = buf;
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bool something = false;
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assert(buf);
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assert(l > 0);
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if (t == USEC_INFINITY) {
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strncpy(p, "infinity", l-1);
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p[l-1] = 0;
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return p;
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}
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if (t <= 0) {
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strncpy(p, "0", l-1);
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p[l-1] = 0;
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return p;
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}
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/* The result of this function can be parsed with parse_sec */
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for (i = 0; i < ELEMENTSOF(table); i++) {
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int k = 0;
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size_t n;
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bool done = false;
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usec_t a, b;
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if (t <= 0)
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break;
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if (t < accuracy && something)
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break;
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if (t < table[i].usec)
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continue;
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if (l <= 1)
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break;
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a = t / table[i].usec;
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b = t % table[i].usec;
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/* Let's see if we should shows this in dot notation */
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if (t < USEC_PER_MINUTE && b > 0) {
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usec_t cc;
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int j;
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j = 0;
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for (cc = table[i].usec; cc > 1; cc /= 10)
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j++;
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for (cc = accuracy; cc > 1; cc /= 10) {
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b /= 10;
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j--;
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}
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if (j > 0) {
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k = snprintf(p, l,
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"%s"USEC_FMT".%0*llu%s",
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p > buf ? " " : "",
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a,
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j,
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(unsigned long long) b,
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table[i].suffix);
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t = 0;
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done = true;
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}
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}
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/* No? Then let's show it normally */
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if (!done) {
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k = snprintf(p, l,
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"%s"USEC_FMT"%s",
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p > buf ? " " : "",
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a,
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table[i].suffix);
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t = b;
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}
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n = MIN((size_t) k, l);
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l -= n;
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p += n;
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something = true;
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}
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*p = 0;
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return buf;
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}
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void dual_timestamp_serialize(FILE *f, const char *name, dual_timestamp *t) {
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assert(f);
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assert(name);
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assert(t);
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if (!dual_timestamp_is_set(t))
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return;
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fprintf(f, "%s="USEC_FMT" "USEC_FMT"\n",
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name,
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t->realtime,
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t->monotonic);
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}
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void dual_timestamp_deserialize(const char *value, dual_timestamp *t) {
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unsigned long long a, b;
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assert(value);
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assert(t);
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if (sscanf(value, "%llu %llu", &a, &b) != 2)
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log_debug("Failed to parse finish timestamp value %s", value);
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else {
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t->realtime = a;
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t->monotonic = b;
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}
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}
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int parse_timestamp(const char *t, usec_t *usec) {
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static const struct {
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const char *name;
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const int nr;
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} day_nr[] = {
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{ "Sunday", 0 },
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{ "Sun", 0 },
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{ "Monday", 1 },
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{ "Mon", 1 },
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{ "Tuesday", 2 },
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{ "Tue", 2 },
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{ "Wednesday", 3 },
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{ "Wed", 3 },
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{ "Thursday", 4 },
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{ "Thu", 4 },
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{ "Friday", 5 },
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{ "Fri", 5 },
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{ "Saturday", 6 },
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{ "Sat", 6 },
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};
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const char *k;
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struct tm tm, copy;
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time_t x;
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usec_t plus = 0, minus = 0, ret;
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int r, weekday = -1;
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unsigned i;
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/*
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* Allowed syntaxes:
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*
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* 2012-09-22 16:34:22
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* 2012-09-22 16:34 (seconds will be set to 0)
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* 2012-09-22 (time will be set to 00:00:00)
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* 16:34:22 (date will be set to today)
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* 16:34 (date will be set to today, seconds to 0)
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* now
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* yesterday (time is set to 00:00:00)
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* today (time is set to 00:00:00)
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* tomorrow (time is set to 00:00:00)
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* +5min
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* -5days
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* @2147483647 (seconds since epoch)
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*
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*/
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assert(t);
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assert(usec);
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x = time(NULL);
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assert_se(localtime_r(&x, &tm));
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tm.tm_isdst = -1;
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if (streq(t, "now"))
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goto finish;
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else if (streq(t, "today")) {
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tm.tm_sec = tm.tm_min = tm.tm_hour = 0;
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goto finish;
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} else if (streq(t, "yesterday")) {
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tm.tm_mday --;
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tm.tm_sec = tm.tm_min = tm.tm_hour = 0;
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goto finish;
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} else if (streq(t, "tomorrow")) {
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tm.tm_mday ++;
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tm.tm_sec = tm.tm_min = tm.tm_hour = 0;
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goto finish;
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} else if (t[0] == '+') {
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r = parse_sec(t+1, &plus);
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if (r < 0)
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return r;
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goto finish;
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} else if (t[0] == '-') {
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r = parse_sec(t+1, &minus);
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if (r < 0)
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return r;
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goto finish;
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} else if (t[0] == '@')
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return parse_sec(t + 1, usec);
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else if (endswith(t, " ago")) {
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_cleanup_free_ char *z;
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z = strndup(t, strlen(t) - 4);
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if (!z)
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return -ENOMEM;
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r = parse_sec(z, &minus);
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if (r < 0)
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return r;
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goto finish;
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} else if (endswith(t, " left")) {
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_cleanup_free_ char *z;
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z = strndup(t, strlen(t) - 4);
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if (!z)
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return -ENOMEM;
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r = parse_sec(z, &plus);
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if (r < 0)
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return r;
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goto finish;
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}
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for (i = 0; i < ELEMENTSOF(day_nr); i++) {
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|
size_t skip;
|
|
|
|
if (!startswith_no_case(t, day_nr[i].name))
|
|
continue;
|
|
|
|
skip = strlen(day_nr[i].name);
|
|
if (t[skip] != ' ')
|
|
continue;
|
|
|
|
weekday = day_nr[i].nr;
|
|
t += skip + 1;
|
|
break;
|
|
}
|
|
|
|
copy = tm;
|
|
k = strptime(t, "%y-%m-%d %H:%M:%S", &tm);
|
|
if (k && *k == 0)
|
|
goto finish;
|
|
|
|
tm = copy;
|
|
k = strptime(t, "%Y-%m-%d %H:%M:%S", &tm);
|
|
if (k && *k == 0)
|
|
goto finish;
|
|
|
|
tm = copy;
|
|
k = strptime(t, "%y-%m-%d %H:%M", &tm);
|
|
if (k && *k == 0) {
|
|
tm.tm_sec = 0;
|
|
goto finish;
|
|
}
|
|
|
|
tm = copy;
|
|
k = strptime(t, "%Y-%m-%d %H:%M", &tm);
|
|
if (k && *k == 0) {
|
|
tm.tm_sec = 0;
|
|
goto finish;
|
|
}
|
|
|
|
tm = copy;
|
|
k = strptime(t, "%y-%m-%d", &tm);
|
|
if (k && *k == 0) {
|
|
tm.tm_sec = tm.tm_min = tm.tm_hour = 0;
|
|
goto finish;
|
|
}
|
|
|
|
tm = copy;
|
|
k = strptime(t, "%Y-%m-%d", &tm);
|
|
if (k && *k == 0) {
|
|
tm.tm_sec = tm.tm_min = tm.tm_hour = 0;
|
|
goto finish;
|
|
}
|
|
|
|
tm = copy;
|
|
k = strptime(t, "%H:%M:%S", &tm);
|
|
if (k && *k == 0)
|
|
goto finish;
|
|
|
|
tm = copy;
|
|
k = strptime(t, "%H:%M", &tm);
|
|
if (k && *k == 0) {
|
|
tm.tm_sec = 0;
|
|
goto finish;
|
|
}
|
|
|
|
return -EINVAL;
|
|
|
|
finish:
|
|
x = mktime(&tm);
|
|
if (x == (time_t) -1)
|
|
return -EINVAL;
|
|
|
|
if (weekday >= 0 && tm.tm_wday != weekday)
|
|
return -EINVAL;
|
|
|
|
ret = (usec_t) x * USEC_PER_SEC;
|
|
|
|
ret += plus;
|
|
if (ret > minus)
|
|
ret -= minus;
|
|
else
|
|
ret = 0;
|
|
|
|
*usec = ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int parse_sec(const char *t, usec_t *usec) {
|
|
static const struct {
|
|
const char *suffix;
|
|
usec_t usec;
|
|
} table[] = {
|
|
{ "seconds", USEC_PER_SEC },
|
|
{ "second", USEC_PER_SEC },
|
|
{ "sec", USEC_PER_SEC },
|
|
{ "s", USEC_PER_SEC },
|
|
{ "minutes", USEC_PER_MINUTE },
|
|
{ "minute", USEC_PER_MINUTE },
|
|
{ "min", USEC_PER_MINUTE },
|
|
{ "months", USEC_PER_MONTH },
|
|
{ "month", USEC_PER_MONTH },
|
|
{ "msec", USEC_PER_MSEC },
|
|
{ "ms", USEC_PER_MSEC },
|
|
{ "m", USEC_PER_MINUTE },
|
|
{ "hours", USEC_PER_HOUR },
|
|
{ "hour", USEC_PER_HOUR },
|
|
{ "hr", USEC_PER_HOUR },
|
|
{ "h", USEC_PER_HOUR },
|
|
{ "days", USEC_PER_DAY },
|
|
{ "day", USEC_PER_DAY },
|
|
{ "d", USEC_PER_DAY },
|
|
{ "weeks", USEC_PER_WEEK },
|
|
{ "week", USEC_PER_WEEK },
|
|
{ "w", USEC_PER_WEEK },
|
|
{ "years", USEC_PER_YEAR },
|
|
{ "year", USEC_PER_YEAR },
|
|
{ "y", USEC_PER_YEAR },
|
|
{ "usec", 1ULL },
|
|
{ "us", 1ULL },
|
|
{ "", USEC_PER_SEC }, /* default is sec */
|
|
};
|
|
|
|
const char *p, *s;
|
|
usec_t r = 0;
|
|
bool something = false;
|
|
|
|
assert(t);
|
|
assert(usec);
|
|
|
|
p = t;
|
|
|
|
p += strspn(p, WHITESPACE);
|
|
s = startswith(p, "infinity");
|
|
if (s) {
|
|
s += strspn(s, WHITESPACE);
|
|
if (*s != 0)
|
|
return -EINVAL;
|
|
|
|
*usec = USEC_INFINITY;
|
|
return 0;
|
|
}
|
|
|
|
for (;;) {
|
|
long long l, z = 0;
|
|
char *e;
|
|
unsigned i, n = 0;
|
|
|
|
p += strspn(p, WHITESPACE);
|
|
|
|
if (*p == 0) {
|
|
if (!something)
|
|
return -EINVAL;
|
|
|
|
break;
|
|
}
|
|
|
|
errno = 0;
|
|
l = strtoll(p, &e, 10);
|
|
|
|
if (errno > 0)
|
|
return -errno;
|
|
|
|
if (l < 0)
|
|
return -ERANGE;
|
|
|
|
if (*e == '.') {
|
|
char *b = e + 1;
|
|
|
|
errno = 0;
|
|
z = strtoll(b, &e, 10);
|
|
if (errno > 0)
|
|
return -errno;
|
|
|
|
if (z < 0)
|
|
return -ERANGE;
|
|
|
|
if (e == b)
|
|
return -EINVAL;
|
|
|
|
n = e - b;
|
|
|
|
} else if (e == p)
|
|
return -EINVAL;
|
|
|
|
e += strspn(e, WHITESPACE);
|
|
|
|
for (i = 0; i < ELEMENTSOF(table); i++)
|
|
if (startswith(e, table[i].suffix)) {
|
|
usec_t k = (usec_t) z * table[i].usec;
|
|
|
|
for (; n > 0; n--)
|
|
k /= 10;
|
|
|
|
r += (usec_t) l * table[i].usec + k;
|
|
p = e + strlen(table[i].suffix);
|
|
|
|
something = true;
|
|
break;
|
|
}
|
|
|
|
if (i >= ELEMENTSOF(table))
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
*usec = r;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int parse_nsec(const char *t, nsec_t *nsec) {
|
|
static const struct {
|
|
const char *suffix;
|
|
nsec_t nsec;
|
|
} table[] = {
|
|
{ "seconds", NSEC_PER_SEC },
|
|
{ "second", NSEC_PER_SEC },
|
|
{ "sec", NSEC_PER_SEC },
|
|
{ "s", NSEC_PER_SEC },
|
|
{ "minutes", NSEC_PER_MINUTE },
|
|
{ "minute", NSEC_PER_MINUTE },
|
|
{ "min", NSEC_PER_MINUTE },
|
|
{ "months", NSEC_PER_MONTH },
|
|
{ "month", NSEC_PER_MONTH },
|
|
{ "msec", NSEC_PER_MSEC },
|
|
{ "ms", NSEC_PER_MSEC },
|
|
{ "m", NSEC_PER_MINUTE },
|
|
{ "hours", NSEC_PER_HOUR },
|
|
{ "hour", NSEC_PER_HOUR },
|
|
{ "hr", NSEC_PER_HOUR },
|
|
{ "h", NSEC_PER_HOUR },
|
|
{ "days", NSEC_PER_DAY },
|
|
{ "day", NSEC_PER_DAY },
|
|
{ "d", NSEC_PER_DAY },
|
|
{ "weeks", NSEC_PER_WEEK },
|
|
{ "week", NSEC_PER_WEEK },
|
|
{ "w", NSEC_PER_WEEK },
|
|
{ "years", NSEC_PER_YEAR },
|
|
{ "year", NSEC_PER_YEAR },
|
|
{ "y", NSEC_PER_YEAR },
|
|
{ "usec", NSEC_PER_USEC },
|
|
{ "us", NSEC_PER_USEC },
|
|
{ "nsec", 1ULL },
|
|
{ "ns", 1ULL },
|
|
{ "", 1ULL }, /* default is nsec */
|
|
};
|
|
|
|
const char *p, *s;
|
|
nsec_t r = 0;
|
|
bool something = false;
|
|
|
|
assert(t);
|
|
assert(nsec);
|
|
|
|
p = t;
|
|
|
|
p += strspn(p, WHITESPACE);
|
|
s = startswith(p, "infinity");
|
|
if (s) {
|
|
s += strspn(s, WHITESPACE);
|
|
if (*s != 0)
|
|
return -EINVAL;
|
|
|
|
*nsec = NSEC_INFINITY;
|
|
return 0;
|
|
}
|
|
|
|
for (;;) {
|
|
long long l, z = 0;
|
|
char *e;
|
|
unsigned i, n = 0;
|
|
|
|
p += strspn(p, WHITESPACE);
|
|
|
|
if (*p == 0) {
|
|
if (!something)
|
|
return -EINVAL;
|
|
|
|
break;
|
|
}
|
|
|
|
errno = 0;
|
|
l = strtoll(p, &e, 10);
|
|
|
|
if (errno > 0)
|
|
return -errno;
|
|
|
|
if (l < 0)
|
|
return -ERANGE;
|
|
|
|
if (*e == '.') {
|
|
char *b = e + 1;
|
|
|
|
errno = 0;
|
|
z = strtoll(b, &e, 10);
|
|
if (errno > 0)
|
|
return -errno;
|
|
|
|
if (z < 0)
|
|
return -ERANGE;
|
|
|
|
if (e == b)
|
|
return -EINVAL;
|
|
|
|
n = e - b;
|
|
|
|
} else if (e == p)
|
|
return -EINVAL;
|
|
|
|
e += strspn(e, WHITESPACE);
|
|
|
|
for (i = 0; i < ELEMENTSOF(table); i++)
|
|
if (startswith(e, table[i].suffix)) {
|
|
nsec_t k = (nsec_t) z * table[i].nsec;
|
|
|
|
for (; n > 0; n--)
|
|
k /= 10;
|
|
|
|
r += (nsec_t) l * table[i].nsec + k;
|
|
p = e + strlen(table[i].suffix);
|
|
|
|
something = true;
|
|
break;
|
|
}
|
|
|
|
if (i >= ELEMENTSOF(table))
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
*nsec = r;
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool ntp_synced(void) {
|
|
struct timex txc = {};
|
|
|
|
if (adjtimex(&txc) < 0)
|
|
return false;
|
|
|
|
if (txc.status & STA_UNSYNC)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
int get_timezones(char ***ret) {
|
|
_cleanup_fclose_ FILE *f = NULL;
|
|
_cleanup_strv_free_ char **zones = NULL;
|
|
size_t n_zones = 0, n_allocated = 0;
|
|
|
|
assert(ret);
|
|
|
|
zones = strv_new("UTC", NULL);
|
|
if (!zones)
|
|
return -ENOMEM;
|
|
|
|
n_allocated = 2;
|
|
n_zones = 1;
|
|
|
|
f = fopen("/usr/share/zoneinfo/zone.tab", "re");
|
|
if (f) {
|
|
char l[LINE_MAX];
|
|
|
|
FOREACH_LINE(l, f, return -errno) {
|
|
char *p, *w;
|
|
size_t k;
|
|
|
|
p = strstrip(l);
|
|
|
|
if (isempty(p) || *p == '#')
|
|
continue;
|
|
|
|
/* Skip over country code */
|
|
p += strcspn(p, WHITESPACE);
|
|
p += strspn(p, WHITESPACE);
|
|
|
|
/* Skip over coordinates */
|
|
p += strcspn(p, WHITESPACE);
|
|
p += strspn(p, WHITESPACE);
|
|
|
|
/* Found timezone name */
|
|
k = strcspn(p, WHITESPACE);
|
|
if (k <= 0)
|
|
continue;
|
|
|
|
w = strndup(p, k);
|
|
if (!w)
|
|
return -ENOMEM;
|
|
|
|
if (!GREEDY_REALLOC(zones, n_allocated, n_zones + 2)) {
|
|
free(w);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
zones[n_zones++] = w;
|
|
zones[n_zones] = NULL;
|
|
}
|
|
|
|
strv_sort(zones);
|
|
|
|
} else if (errno != ENOENT)
|
|
return -errno;
|
|
|
|
*ret = zones;
|
|
zones = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool timezone_is_valid(const char *name) {
|
|
bool slash = false;
|
|
const char *p, *t;
|
|
struct stat st;
|
|
|
|
if (!name || *name == 0 || *name == '/')
|
|
return false;
|
|
|
|
for (p = name; *p; p++) {
|
|
if (!(*p >= '0' && *p <= '9') &&
|
|
!(*p >= 'a' && *p <= 'z') &&
|
|
!(*p >= 'A' && *p <= 'Z') &&
|
|
!(*p == '-' || *p == '_' || *p == '+' || *p == '/'))
|
|
return false;
|
|
|
|
if (*p == '/') {
|
|
|
|
if (slash)
|
|
return false;
|
|
|
|
slash = true;
|
|
} else
|
|
slash = false;
|
|
}
|
|
|
|
if (slash)
|
|
return false;
|
|
|
|
t = strjoina("/usr/share/zoneinfo/", name);
|
|
if (stat(t, &st) < 0)
|
|
return false;
|
|
|
|
if (!S_ISREG(st.st_mode))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
clockid_t clock_boottime_or_monotonic(void) {
|
|
static clockid_t clock = -1;
|
|
int fd;
|
|
|
|
if (clock != -1)
|
|
return clock;
|
|
|
|
fd = timerfd_create(CLOCK_BOOTTIME, TFD_NONBLOCK|TFD_CLOEXEC);
|
|
if (fd < 0)
|
|
clock = CLOCK_MONOTONIC;
|
|
else {
|
|
safe_close(fd);
|
|
clock = CLOCK_BOOTTIME;
|
|
}
|
|
|
|
return clock;
|
|
}
|