If the locking process is a user application (e.g., Notepad, PeaZip, a text editor):
In modern collaborative and cloud-integrated operating systems, traditional file locking mechanisms (advisory and mandatory) often fall short of balancing security with flexibility. This paper introduces , a hybrid model that augments standard file locks with contextual policy enforcement. PEA introduces three core layers: Authentication Binding , Pre-Execution Auditing , and Encryption Anchoring . The proposed architecture prevents unauthorized read/write access, mitigates race conditions, and provides verifiable logs for compliance. Simulation results demonstrate a 23% reduction in security violations compared to standard fcntl() locks, with a negligible 4% performance overhead. File Lock PEA
Some cloud sync engines use "Pending Extended Attributes" (PEA) locks to prevent collisions during sync. If a file is locked with a PEA flag, the cloud client is currently hashing or uploading the data. If the locking process is a user application (e