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/*
* Copyright (c) 2025 The OpenRC Authors.
* See the Authors file at the top-level directory of this distribution and
* https://github.com/OpenRC/openrc/blob/HEAD/AUTHORS
*
* This file is part of OpenRC. It is subject to the license terms in
* the LICENSE file found in the top-level directory of this
* distribution and at https://github.com/OpenRC/openrc/blob/HEAD/LICENSE
* This file may not be copied, modified, propagated, or distributed
* except according to the terms contained in the LICENSE file.
*/
#include <errno.h>
#include "helpers.h"
#include "timeutils.h"
/* on linux CLOCK_BOOTTIME provides proper POSIX CLOCK_MONOTONIC behavior. */
#if defined(__linux__)
# undef CLOCK_MONOTONIC
# define CLOCK_MONOTONIC CLOCK_BOOTTIME
#endif
static int64_t ts_to_ms(struct timespec tv)
{
int64_t sec_to_ms = 1000, round_up = 500000, ns_to_ms = 1000000;
return (tv.tv_sec * sec_to_ms) + ((tv.tv_nsec + round_up) / ns_to_ms);
}
int64_t tm_now(void)
{
struct timespec tv;
clock_gettime(CLOCK_MONOTONIC, &tv);
return ts_to_ms(tv);
}
int64_t tm_sleep(int64_t ms, enum tm_sleep_flags flags)
{
int ret;
struct timespec tv, rem;
tv.tv_sec = ms / 1000;
tv.tv_nsec = (ms % 1000) * 1000000l;
for (;;) {
ret = clock_nanosleep(CLOCK_MONOTONIC, 0, &tv, &rem);
if (ret < 0 && (!(flags & TM_NO_EINTR) || errno != EINTR))
return ts_to_ms(rem);
if (ret == 0)
break;
tv = rem;
}
return 0;
}
int64_t parse_duration(const char *duration)
{
enum delay_unit {
UNIT_INVALID = -1,
UNIT_MS = 1,
UNIT_SEC = 1000,
UNIT_MIN = UNIT_SEC * 60,
UNIT_HOUR = UNIT_MIN * 60,
} unit = UNIT_INVALID;
struct { const char *ext; enum delay_unit unit; } exts[] = {
{ "ms", UNIT_MS }, { "miliseconds", UNIT_MS },
{ "s", UNIT_SEC }, { "sec", UNIT_SEC }, { "seconds", UNIT_SEC }, { "", UNIT_SEC },
{ "m", UNIT_MIN }, { "min", UNIT_MIN }, { "minutes", UNIT_MIN },
{ "h", UNIT_HOUR }, { "hour", UNIT_HOUR }
};
char *end;
long val;
errno = 0;
val = strtol(duration, &end, 10);
if (errno == ERANGE || *duration == '\0' || val < 0)
return -1;
for (size_t i = 0; i < ARRAY_SIZE(exts); ++i) {
if (strcmp(end, exts[i].ext) == 0) {
unit = exts[i].unit;
break;
}
}
switch (unit) {
case UNIT_INVALID:
return -1;
default:
if (INT64_MAX/unit < val) /* overflow */
return -1;
return (int64_t)val * unit;
}
}
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