Google Inc.

Eric Joseph Uhrhane

Matthew Nicholas Papakipos

Antoine Labour

David Braginsky

Justin M Rosenstein

David Jeske

Ryan Tyler Cairns

Peter Bradshaw

A method of preserving file metadata associated with an edited file, performed on a client device, includes storing in a log information denoting a plurality of create, delete, and rename operations on one or more files in a file system, and determining when two or more operations denoted in the log, including an operation involving a first file and another operation involving a second file, comprise an atomic save of a respective file, the first file comprising a first version of the respective file, and the second file comprising a second version of the respective file, the first file and second file each having associated metadata. The method further includes associating a subset of the metadata of the first file with the second file, such that at least one of a globally unique file identifier and file access permissions associated with the first file become associated with the second file.

Preserving file metadata during atomic save operations

One embodiment provides a system that facilitates the execution of a web application. During operation, the system allocates a storage space on one or more storage devices for use by the web application. Next, the system creates, for the web application, a private filesystem comprising a private root directory within the storage space. Finally, the system enables access to the private filesystem for the web application through the private root directory in a manner that does not allow access to a host filesystem associated with the one or more storage devices from the web application.

Filesystem access for web applications and native code modules

Some embodiments provide a system that executes an application. During operation, the system obtains a resource list associated with the application and stores a set of resources including a native code module from the resource list through communications over a network connection, wherein the resources are stored in persistent local storage. The application then loads the application in the web browser and loads the native code module into a secure runtime environment. Next, the application executes the application independently of the network connection using the native code module and the stored resources.

Installer-free applications using native code modules and persistent local storage

A server stores server metadata entries corresponding to data objects, each server metadata entry including a server file name and an identifier, distinct from the server file name, for a respective data object. The server receives client metadata entries from a client, each client metadata entry corresponding to a data object for which at least one metadata parameter has changed since a prior execution of a synchronization process. Each client metadata entry includes a client file name and an identifier, distinct from the client file name, for a respective data object corresponding to the client metadata entry. The server synchronizes the received client metadata entries with corresponding server metadata entries, if any, having identifiers that match said identifiers in the received client metadata entries, without regard to whether the corresponding server metadata entries include server file names that match the client file names in the received client metadata entries.

Conflict management during data object synchronization between client and server

A client stores client metadata entries corresponding to a plurality of data objects. During a first phase of a synchronization process, the client sends one or more client metadata entries to a server. Each client metadata entry sent corresponds to a data object for which at least one metadata parameter has changed since a prior execution of the synchronization process. During a second phase of the synchronization process, the client receives from the server one or more server metadata entries, each having at least one parameter that has changed since a prior execution of the synchronization process. The client identifies any received server metadata entry that conflicts with a corresponding client metadata entry, requests a user to select from among a predefined set of conflict resolutions to resolve the conflict, and the performs an action in accordance with the conflict resolution selected by the user.

Growing community of inventors

San Francisco, CA, United States of America

Eric Joseph Uhrhane