1 files changed, 38 insertions, 0 deletions
diff --git a/src/detection/uptime/uptime_linux.c b/src/detection/uptime/uptime_linux.c
new file mode 100644
index 0000000..75c7768
--- /dev/null
+++ b/src/detection/uptime/uptime_linux.c
@@ -0,0 +1,38 @@
+#include "uptime.h"
+#include "common/time.h"
+#include "common/io.h"
+
+#include <inttypes.h>
+
+const char* ffDetectUptime(FFUptimeResult* result) {
+#ifndef __ANDROID__ // cat: /proc/uptime: Permission denied
+
+    // #620
+    char buf[64];
+    ssize_t nRead = ffReadFileData("/proc/uptime", ARRAY_SIZE(buf) - 1, buf);
+    if (nRead > 0) {
+        buf[nRead] = '\0';
+
+        char* err = NULL;
+        double sec = strtod(buf, &err);
+        if (err != buf) {
+            result->uptime = (uint64_t) (sec * 1000);
+            result->bootTime = ffTimeGetNow() - result->uptime;
+            return NULL;
+        }
+    }
+
+#endif
+#ifndef __GNU__
+    struct timespec uptime;
+    if (clock_gettime(CLOCK_BOOTTIME, &uptime) != 0) {
+        return "clock_gettime(CLOCK_BOOTTIME) failed";
+    }
+
+    result->uptime = (uint64_t) uptime.tv_sec * 1000 + (uint64_t) uptime.tv_nsec / 1000000;
+    result->bootTime = ffTimeGetNow() - result->uptime;
+    return NULL;
+#else
+    return "read(/proc/uptime) failed";
+#endif
+}