Adding interface between node and libeio for Chmod.

doc/api.txt

@@ -632,7 +632,11 @@ fs.rename("/tmp/hello", "/tmp/world").addCallback(function () {
   - on success: no parameters.
   - on error: no parameters.
 
-
++fs.chmod(path, mode)+ ::
+  See chmod(1)
+  - on success: no parameters.
+  - on error: no parameters.
+  
 +fs.stat(path)+ ::
 See stat(2).
 - on success: Returns +fs.Stats+ object. It looks like this:

src/node.js

@@ -769,6 +769,17 @@ var fsModule = createInternalModule("fs", function (exports) {
 
     return content;
   };
+  
+  exports.chmod = function(path, mode){
+    var promise = new events.Promise();
+    process.fs.chmod(path, mode, callback(promise));
+    return promise;
+  };
+  
+  exports.chmodSync = function(path, mode){
+    return process.fs.chmod(path, mode);
+  };
+  
 });
 
 var fs = fsModule.exports;

src/node_file.cc

@@ -54,6 +54,7 @@ static int After(eio_req *req) {
       case EIO_RMDIR:
       case EIO_MKDIR:
       case EIO_FTRUNCATE:
+      case EIO_CHMOD:
         argc = 0;
         break;
 
@@ -428,6 +429,28 @@ static Handle<Value> Read(const Arguments& args) {
   }
 }
 
+/* node.fs.chmod(fd, mode);
+ * Wrapper for chmod(1) / EIO_CHMOD
+ */
+static Handle<Value> Chmod(const Arguments& args){
+  HandleScope scope;
+  
+  if(args.Length() < 2 || !args[0]->IsString() || !args[1]->IsInt32()) {
+    return THROW_BAD_ARGS;
+  }
+  String::Utf8Value path(args[0]->ToString());
+  mode_t mode = static_cast<mode_t>(args[1]->Int32Value());
+  
+  if(args[2]->IsFunction()) {
+    ASYNC_CALL(chmod, args[2], *path, mode);
+  } else {
+    int ret = chmod(*path, mode);
+    if (ret != 0) return ThrowException(errno_exception(errno));
+    return Undefined();
+  }
+}
+
+
 void File::Initialize(Handle<Object> target) {
   HandleScope scope;
 
@@ -443,6 +466,8 @@ void File::Initialize(Handle<Object> target) {
   NODE_SET_METHOD(target, "stat", Stat);
   NODE_SET_METHOD(target, "unlink", Unlink);
   NODE_SET_METHOD(target, "write", Write);
+  
+  NODE_SET_METHOD(target, "chmod", Chmod);
 
   errno_symbol = NODE_PSYMBOL("errno");
   encoding_symbol = NODE_PSYMBOL("node:encoding");

test/mjsunit/test-fs-chmod.js

@@ -0,0 +1,27 @@
+process.mixin(require("./common"));
+
+var got_error = false;
+var success_count = 0;
+
+var __file = path.join(fixturesDir, "a.js");
+
+var promise = fs.chmod(__file, 0777);
+
+promise.addCallback(function () {
+  puts(fs.statSync(__file).mode);
+  assert.equal("777", (fs.statSync(__file).mode & 0777).toString(8));
+  
+  fs.chmodSync(__file, 0644);
+  assert.equal("644", (fs.statSync(__file).mode & 0777).toString(8));
+  success_count++;
+});
+
+promise.addErrback(function () {
+  got_error = true;
+});
+
+process.addListener("exit", function () {
+  assert.equal(1, success_count);
+  assert.equal(false, got_error);
+});
+