* Make the pAttributeInfo and pIndexInfo arguments to CSSM_DL_CreateRelation optional (DONE). * Enhance POD wrappers and use them everywhere (DONE for insert still needs work for get). * Implement Indexes * Implement unique index checks for dataInsert and dataModify * Add unique index info to UNIQUE_RECORD structures. * Implement KEY items (AppleCSPDL). * Clean up usage of ReadSection::at(uint32) vs. ReadSection::operator(uint32) * Fix AtomicFile for NFS and ASIP (Use alternative locking mechanism). * Implement ACL evaluation for Db access. * Implement ACL APIs. * Make DbModifier thread safe again. * Cleanup Query objects when DbContext is destroyed (register them with the context). * What if we open a DB that is being created? Currently we get back DL_DATABASE_CORRUPT should this become DL_DATABASE_DOES_NOT_EXIST? * When using CssmOid attribute names make sure to deep copy the CssmOids data (DONE). * Implement SelectionPredicates completely To make DataGetFirst and DataGetNext actually work (DONE). * Implement CreateRelation (DONE) * Implement DataModify (DONE, now with correct semantics -- CB) * In DataModify, check that RecordType matches that in the UniqueRecordId. * Store index data when creating tables and databases. * Add write buffering in AtomicFile to increase performance; flush buffer before seek. * Make sure that automatically-assigned attribute ids don't shadow ones passed in explicitly. * Performance: Avoid reconstructing DbVersion after a write (w/o a schema change) when we could derive it from the DbModifier. Only if version is as expected (i.e. no other writes in the meantime) * Add fsync() to make sure AtomicFile is written before rename.