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-- Rewrite PspChargeProcessQuotaSpecifiedPool and PspReturnProcessQuotaSpecifiedPool private kernel routines, with the goal to implement the algorithms necessary to manage the fields of quota blocks (Usage, Return, Limit and Peak). -- Invoke the Mm if quota limit raising or returning has to be done -- When destroying a quota block, make sure that we're giving back all the rest of non-returned quotas to Memory Mm -- Crash the system with QUOTA_UNDERFLOW if someone is returning way too much quota than it was previously charged -- When a process exits, ensure that it doesn't hold up any charged quotas in QuotaUsage field of the process object, that way we're enforcing proper kernel consistency -- Implement PsChargeSharedPoolQuota and PsChargeProcessPageFileQuota functions, used exclusively by the Object Manager. These routines are used to charge or return amount of quotas of a newly created object. -- On PspInheritQuota, when assigning to process the default quota block if no parent process is given, we must increment the reference counts as we're using it -- Handle the ProcessCount reference field, as it wasn't used -- Annotate the functions with SAL -- Document the code === REMARKS === Windows LogOn (Winlogon) is responsible for setting up a different quota block for all the processes within an interactive session, which is what we don't do. What we're currently doing instead is we're using the default block, PspDefaultQuotaBlock, for all the processes across the system. The default block contains the default limits of -1 (which would imply no limits). By definition, the kernel won't ever return STATUS_QUOTA_EXCEEDED as we literally don't set up a definite limit for regular processes. This situation has to be tackled in the future. === TODO FOR FUTURE === Most of the code in PspChargeProcessQuotaSpecifiedPool and PspReturnProcessQuotaSpecifiedPool private routines must be refactored in order to reduce the usage of the quota spin lock, possibly wrapping such code in a loop and whatnot. CORE-17784 |
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