Amazon Technologies, Inc.

Borislav Andruschuk

Kevin Fowler

Noah Anthony Eisner

Kevin George Gillett

Stephen Joseph Oakley

Arun Ponniah Sethuramalingam

Scott Anthony Plant

Amaan Ahmed Penangwala

Richa Sehgal

Noah Eisner

A method of synchronizing shared folders and files within a remote and local file system includes determining a remote and local file system state. The remote file system state includes remote hash values for remote instances of shared folders, shared sub-folders, shared files, shared sub-level files, and shared shortcuts. The local file system state includes a local hash values for local instances of shared folders, shared sub-folders, shared files, shared sub-level files, and shared shortcuts. The method also includes comparing the remote file system state and the local file system state to determine any differences in the hash values within the remote file system state and the local file system state and synchronizing any shared folder, shared sub-folder, or shared file having a differing value in the remote file system state and the local file system state across the local file system and the remote file system.

Synchronization of shared folders and files

Access control for shared computing resources in a hierarchical system is provided herein. An as-needed, 'lazy evaluation' approach to access control is described in which an effective access control list for a computing resource is determined after a request is received from a user to access the resource. When resources are shared, access control policies are created and stored in association with the shared resource but are not stored in association with hierarchically related lower-level resources. When an access request for a resource is received, access control policies are collected for levels of a computing resource hierarchy that are higher than the hierarchy level of the resource. An effective access control list is determined based on permissions specified in the collected access control policies. The effective access control list represents an effective propagation of access control policies of higher hierarchy levels to the computing resource.

Hierarchical policy-based shared resource access control

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Mountain View, CA, United States of America

Borislav Andruschuk