Processes (NetBSD): add support

Author: CarterLi

CMakeLists.txt

@@ -727,7 +727,7 @@ elseif(NetBSD)
         src/detection/os/os_nbsd.c
         src/detection/packages/packages_obsd.c
         src/detection/poweradapter/poweradapter_nosupport.c
-        src/detection/processes/processes_nosupport.c
+        src/detection/processes/processes_nbsd.c
         src/detection/gtk_qt/qt.c
         src/detection/sound/sound_linux.c
         src/detection/swap/swap_obsd.c

src/detection/processes/processes_nbsd.c

@@ -0,0 +1,15 @@
+#include "processes.h"
+
+#include <sys/sysctl.h>
+
+const char* ffDetectProcesses(uint32_t* result)
+{
+    int request[] = {CTL_KERN, KERN_PROC2, KERN_PROC_ALL, -1, sizeof(struct kinfo_proc2), 0};
+    size_t length = 0;
+
+    if(sysctl(request, ARRAY_SIZE(request), NULL, &length, NULL, 0) != 0)
+        return "sysctl({CTL_KERN, KERN_PROC2, KERN_PROC_ALL}) failed";
+
+    *result = (uint32_t)(length / sizeof(struct kinfo_proc2));
+    return NULL;
+}