From b62ad16aa6c2224cde7ca7bd4e3e7f22b67a272d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=8E=E9=80=9A=E6=B4=B2?= <zhangsongcui3371@sina.com>
Date: Thu, 9 May 2024 09:20:18 +0800
Subject: [PATCH] Loadavg (BSD): use sysctl

---
 src/detection/loadavg/loadavg_bsd.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/detection/loadavg/loadavg_bsd.c b/src/detection/loadavg/loadavg_bsd.c
index 69a38e7db..95c0c49cb 100644
--- a/src/detection/loadavg/loadavg_bsd.c
+++ b/src/detection/loadavg/loadavg_bsd.c
@@ -1,8 +1,14 @@
 #include "detection/loadavg/loadavg.h"
 
-#include <stdlib.h>
+#include <sys/sysctl.h>
 
 const char* ffDetectLoadavg(double result[3])
 {
-    return getloadavg(result, 3) < 0 ? "getloadavg() failed" : NULL;
+    struct loadavg load;
+    size_t size = sizeof(load);
+    if (sysctl((int []) { CTL_VM, VM_LOADAVG }, 2, &load, &size, NULL, 0) < 0)
+        return "sysctl({CTL_VM, VM_LOADAVG}) failed";
+    for (int i = 0; i < 3; i++)
+        result[i] = (double) load.ldavg[i] / (double) load.fscale;
+    return NULL;
 }