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/*
* Copyright (C) 2026 Daniel Golle <daniel@makrotopia.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation
*
* This program 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 General Public License for more details.
*/
#ifndef __UPTIME_H
#define __UPTIME_H
#include <fcntl.h>
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
static inline uint64_t uptime_get(void)
{
struct timespec ts;
clock_gettime(CLOCK_BOOTTIME, &ts);
return ts.tv_sec;
}
static inline bool boot_id_get(char *buf, size_t len)
{
ssize_t n;
int fd;
fd = open("/proc/sys/kernel/random/boot_id", O_RDONLY | O_CLOEXEC);
if (fd < 0)
return false;
n = read(fd, buf, len - 1);
close(fd);
if (n <= 0)
return false;
buf[n] = '\0';
buf[strcspn(buf, "\n")] = '\0';
return true;
}
#endif
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