
Developed POSIX ACLs support for the filestore component in the ydb-platform/nbs repository, enabling the use of posix_acl_access and posix_acl_default extended attributes by removing previous restrictions. This work improved compatibility with POSIX-based workflows and streamlined security policy enforcement for users of the storage system. The implementation involved modifying file system internals in C++ and Python, focusing on ACL management and system programming. A new automated test was added to verify correct setting and retrieval of default ACLs, ensuring reliability through test-driven development and continuous integration. The changes reduced manual workarounds and enhanced interoperability for customers relying on POSIX ACLs.
Concise monthly summary for 2025-06 focused on ydb-platform/nbs: Key feature delivered: - POSIX ACLs support in filestore: enabled use of posix_acl_access and posix_acl_default extended attributes by removing prior disallowed checks; added a test covering setting and getting default ACLs. Major bugs fixed: - Removed restrictions that blocked POSIX ACLs in filestore, enabling correct ACL handling; added regression test to ensure default ACL behavior remains correct. Overall impact and accomplishments: - Achieved POSIX ACLs compatibility in filestore, improving security posture and interoperability with POSIX-based workflows; reduces manual workarounds and accelerates policy enforcement for customers using this storage path. Technologies/skills demonstrated: - Filestore internals, extended attributes and POSIX ACLs, test-driven development, commit-driven delivery, and CI-tested changes in ydb-platform/nbs.
Concise monthly summary for 2025-06 focused on ydb-platform/nbs: Key feature delivered: - POSIX ACLs support in filestore: enabled use of posix_acl_access and posix_acl_default extended attributes by removing prior disallowed checks; added a test covering setting and getting default ACLs. Major bugs fixed: - Removed restrictions that blocked POSIX ACLs in filestore, enabling correct ACL handling; added regression test to ensure default ACL behavior remains correct. Overall impact and accomplishments: - Achieved POSIX ACLs compatibility in filestore, improving security posture and interoperability with POSIX-based workflows; reduces manual workarounds and accelerates policy enforcement for customers using this storage path. Technologies/skills demonstrated: - Filestore internals, extended attributes and POSIX ACLs, test-driven development, commit-driven delivery, and CI-tested changes in ydb-platform/nbs.

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