Node.js crash on Windows when no read permissions for the disk root or User folder

nodejs#3977

Author: bcanzanella

lib/fs.js

@@ -1264,8 +1264,17 @@ fs.realpathSync = function realpathSync(p, cache) {
       // some known symbolic link.  no need to stat again.
       resolvedLink = cache[base];
     } else {
-      var stat = fs.lstatSync(base);
-      if (!stat.isSymbolicLink()) {
+     var stat = null;
+      try {
+        stat = fs.lstatSync(base);
+      } catch (e) {
+        // Windows throws an exception if NTFS permissions are missing
+        if (!isWindows || e.code != 'EPERM') {
+          throw e;
+        }
+      }
+
+      if (stat == null || !stat.isSymbolicLink()) {
         knownHard[base] = true;
         if (cache) cache[base] = base;
         continue;

lib/module.js

@@ -511,8 +511,10 @@ Module._initPaths = function() {
   var paths = [path.resolve(process.execPath, '..', '..', 'lib', 'node')];
 
   if (homeDir) {
-    paths.unshift(path.resolve(homeDir, '.node_libraries'));
-    paths.unshift(path.resolve(homeDir, '.node_modules'));
+    try {
+        paths.unshift(path.resolve(homeDir, '.node_libraries'));
+        paths.unshift(path.resolve(homeDir, '.node_modules'));
+    } catch(ex) { }
   }
 
   if (process.env['NODE_PATH']) {