1#include "uptime.h"
 2#include "common/debug.h"
 3#include "common/time.h"
 4#include "common/io.h"
 5
 6#include <errno.h>
 7#include <inttypes.h>
 8#include <string.h>
 9
10const char* ffDetectUptime(FFUptimeResult* result) {
11#ifndef __ANDROID__ // cat: /proc/uptime: Permission denied
12
13    // #620
14    char buf[64];
15    ssize_t nRead = ffReadFileData("/proc/uptime", ARRAY_SIZE(buf) - 1, buf);
16    if (nRead > 0) {
17        buf[nRead] = '\0';
18
19        char* err = nullptr;
20        double sec = strtod(buf, &err);
21        if (err != buf) {
22            result->uptime = (uint64_t) (sec * 1000);
23            result->bootTime = ffTimeGetNow() - result->uptime;
24            return nullptr;
25        }
26    }
27
28#endif
29#ifndef __GNU__
30    struct timespec uptime;
31    if (clock_gettime(CLOCK_BOOTTIME, &uptime) != 0) {
32        FF_DEBUG("clock_gettime(CLOCK_BOOTTIME) failed: %s", strerror(errno));
33        return "clock_gettime(CLOCK_BOOTTIME) failed";
34    }
35
36    result->uptime = (uint64_t) uptime.tv_sec * 1000 + (uint64_t) uptime.tv_nsec / 1000000;
37    result->bootTime = ffTimeGetNow() - result->uptime;
38    return nullptr;
39#else
40    FF_DEBUG("read(/proc/uptime) failed");
41    return "read(/proc/uptime) failed";
42#endif
43}