bsd fixes

lib/graphics.js

@@ -760,12 +760,12 @@ function graphics(callback) {
         }
       }
       if (_freebsd || _openbsd || _netbsd) {
-        if (callback) { callback(result); }
+        if (callback) { callback(null); }
-        resolve(result);
+        resolve(null);
       }
       if (_sunos) {
-        if (callback) { callback(result); }
+        if (callback) { callback(null); }
-        resolve(result);
+        resolve(null);
       }
       if (_windows) {
 

lib/processes.js

@@ -1020,7 +1020,7 @@ function processLoad(proc, callback) {
           }
         }
 
-        if (_darwin || _linux) {
+        if (_darwin || _linux || _freebsd || _openbsd || _netbsd) {
           const params = '-axo pid,pcpu,pmem,comm';
           execFile('ps', params.split(' '), { maxBuffer: 1024 * 20000 }, function (error, stdout) {
             if (!error) {

lib/system.js

@@ -120,6 +120,29 @@ function system(callback) {
                 util.noop();
             }
           }
+          if ((_freebsd || _openbsd || _netbsd) && !result.virtualHost) {
+            try {
+              const procInfo = execSync('dmidecode -t 4');
+              const procLines = procInfo.toString().split('\n');
+              const procManufacturer = util.getValue(procLines, 'manufacturer', ':', true);
+              switch (procManufacturer.toLowerCase()) {
+                case 'virtualbox':
+                  result.virtualHost = 'VirtualBox';
+                  break;
+                case 'vmware':
+                  result.virtualHost = 'VMware';
+                  break;
+                case 'kvm':
+                  result.virtualHost = 'KVM';
+                  break;
+                case 'bochs':
+                  result.virtualHost = 'bochs';
+                  break;
+              }
+            } catch (e) {
+              util.noop();
+            }
+          }
           // detect docker
           if (fs.existsSync('/.dockerenv') || fs.existsSync('/.dockerinit')) {
             result.model = 'Docker Container';