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d850157a84
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README.md
21
README.md
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@ -277,6 +277,7 @@ var fs = new Filer.FileSystem();
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* [fs.readlink(path, callback)](#readlink)
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* [fs.realpath(path, [cache], callback)](#realpath)
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* [fs.unlink(path, callback)](#unlink)
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* [fs.mknod(path, mode, callback)](#mknod)
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* [fs.rmdir(path, callback)](#rmdir)
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* [fs.mkdir(path, [mode], callback)](#mkdir)
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* [fs.readdir(path, callback)](#readdir)
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@ -574,6 +575,26 @@ fs.unlink('/backup.old', function(err) {
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});
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```
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#### fs.mknod(path, mode, callback)<a name="mknod"></a>
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Creates a node at `path` based on the mode passed which is either `FILE` or `DIRECTORY`. Asynchronous [mknod(2)](http://pubs.opengroup.org/onlinepubs/009695399/functions/mknod.html). Callback gets no additional arguments.
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Example:
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```javascript
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// Create a /dir directory
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fs.mknod('/dir', 'DIRECTORY', function(err) {
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if(err) throw err;
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// /dir is now created
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// Create a file inside /dir
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fs.mknod('/dir/myfile', 'FILE', function(err) {
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if(err) throw err;
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// /dir/myfile now exists
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});
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});
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```
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#### fs.rmdir(path, callback)<a name="rmdir"></a>
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Removes the directory at `path`. Asynchronous [rmdir(2)](http://pubs.opengroup.org/onlinepubs/009695399/functions/rmdir.html).
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@ -105,6 +105,83 @@ define(function(require) {
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complete();
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}
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}
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/*
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* make_node()
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*/
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// in: file or directory path
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// out: new node representing file/directory
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function make_node(context, path, mode, callback) {
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if(mode !== MODE_DIRECTORY && mode !== MODE_FILE) {
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return callback(new Errors.EINVAL('mode must be a directory or file'));
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}
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path = normalize(path);
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var name = basename(path);
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var parentPath = dirname(path);
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var parentNode;
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var parentNodeData;
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var node;
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// Check if the parent node exists
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function create_node_in_parent(error, parentDirectoryNode) {
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if(error) {
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callback(error);
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} else if(parentDirectoryNode.mode !== MODE_DIRECTORY) {
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callback(new Errors.ENOTDIR('a component of the path prefix is not a directory'));
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} else {
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parentNode = parentDirectoryNode;
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find_node(context, path, check_if_node_exists);
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}
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}
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// Check if the node to be created already exists
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function check_if_node_exists(error, result) {
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if(!error && result) {
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callback(new Errors.EEXIST('path name already exists'));
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} else if(error && !(error instanceof Errors.ENOENT)) {
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callback(error);
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} else {
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context.get(parentNode.data, create_node);
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}
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}
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// Create the new node
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function create_node(error, result) {
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if(error) {
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callback(error);
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} else {
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parentNodeData = result;
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node = new Node(undefined, mode);
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node.nlinks += 1;
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context.put(node.id, node, update_parent_node_data);
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}
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}
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// Update parent node time
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function update_time(error) {
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if(error) {
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callback(error);
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} else {
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var now = Date.now();
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update_node_times(context, parentPath, node, { mtime: now, ctime: now }, callback);
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}
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}
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// Update the parent nodes data
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function update_parent_node_data(error) {
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if(error) {
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callback(error);
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} else {
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parentNodeData[name] = new DirectoryEntry(node.id, mode);
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context.put(parentNode.data, parentNodeData, update_time);
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}
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}
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// Find the parent node
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find_node(context, parentPath, create_node_in_parent);
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}
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/*
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* find_node
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@ -1471,6 +1548,11 @@ define(function(require) {
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callback(null);
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}
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}
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function mknod(fs, context, path, mode, callback) {
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if(!pathCheck(path, callback)) return;
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make_node(context, path, mode, callback);
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}
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function mkdir(fs, context, path, mode, callback) {
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// NOTE: we support passing a mode arg, but we ignore it internally for now.
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@ -1892,6 +1974,7 @@ define(function(require) {
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makeRootDirectory: make_root_directory,
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open: open,
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close: close,
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mknod: mknod,
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mkdir: mkdir,
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rmdir: rmdir,
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unlink: unlink,
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@ -226,6 +226,7 @@ define(function(require) {
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[
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'open',
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'close',
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'mknod',
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'mkdir',
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'rmdir',
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'stat',
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@ -0,0 +1,80 @@
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define(["Filer", "util"], function(Filer, util) {
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describe('fs.mknod', function() {
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beforeEach(util.setup);
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afterEach(util.cleanup);
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it('should be a function', function(done) {
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var fs = util.fs();
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expect(fs.mknod).to.be.a('function');
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done();
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});
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it('should return an error if part of the parent path does not exist', function(done) {
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var fs = util.fs();
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fs.mknod('/dir/mydir', 'DIRECTORY', function(error) {
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expect(error.code).to.equal('ENOENT');
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done();
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});
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});
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it('should return an error if path already exists', function(done) {
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var fs = util.fs();
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fs.mknod('/', 'DIRECTORY', function(error) {
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expect(error.code).to.equal('EEXIST');
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done();
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});
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});
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it('should return an error if the parent node is not a directory', function(done) {
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var fs = util.fs();
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fs.mknod('/file', 'FILE' , function(error, result) {
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if(error) throw error;
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fs.mknod('/file/myfile', 'FILE', function(error, result) {
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expect(error.code).to.equal('ENOTDIR');
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done();
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});
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});
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});
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it('should return an error if the mode provided is not DIRECTORY or FILE', function(done) {
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var fs = util.fs();
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fs.mknod('/symlink', 'SYMLINK', function(error) {
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expect(error).to.exist;
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expect(error.code).to.equal('EINVAL');
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done();
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});
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});
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it('should make a new directory', function(done) {
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var fs = util.fs();
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fs.mknod('/dir', 'DIRECTORY', function(error) {
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if(error) throw error;
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fs.stat('/dir', function(error, stats) {
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expect(error).not.to.exist;
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expect(stats.type).to.equal('DIRECTORY');
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done();
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});
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});
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});
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it('should make a new file', function(done) {
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var fs = util.fs();
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fs.mknod('/file', 'FILE' , function(error, result) {
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if(error) throw error;
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fs.stat('/file', function(error, result) {
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expect(error).not.to.exist;
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expect(result.type).to.equal('FILE');
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done();
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});
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});
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});
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});
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});
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@ -13,6 +13,7 @@ define([
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"spec/fs.stat.spec",
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"spec/fs.lstat.spec",
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"spec/fs.exists.spec",
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"spec/fs.mknod.spec",
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"spec/fs.mkdir.spec",
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"spec/fs.readdir.spec",
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"spec/fs.rmdir.spec",
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