SetQuotas Event

Fires when the OS needs to update quota information.


virtual int FireSetQuotas(CBFSSetQuotasEventParams *e);
typedef struct {
const void *SID;
int SIDLength;
int RemoveQuota;
int QuotaFound;
int64 QuotaUsed;
int64 QuotaThreshold;
int64 QuotaLimit;
void *EnumerationContext;
int ResultCode; int reserved; } CBFSSetQuotasEventParams;
virtual INT FireSetQuotas(CBFSSetQuotasEventParams *e);
typedef struct {
INT SIDLength;
BOOL RemoveQuota;
BOOL QuotaFound;
LONG64 QuotaUsed;
LONG64 QuotaThreshold;
LONG64 QuotaLimit;
LPVOID EnumerationContext;
INT ResultCode; INT reserved; } CBFSSetQuotasEventParams;


This event fires when the OS needs to set, update, or remove quota information for the security identifier specified by SID. If quota information needs to be set/updated/removed for multiple SIDs, this event will fire multiple times in succession.

This event only needs to be handled if the UseDiskQuotas property is enabled. To handle this event properly, applications must either store or remove the quota information for the security identifier specified by SID:

  • If RemoveQuota is false, set or update the SID's quota information using the values specified by QuotaUsed, QuotaFound, and QuotaLimit.
  • If RemoveQuota is true, and the application has quota information stored for the SID, remove that information and set QuotaFound to true. If the application does not have quota information stored for the SID, set QuotaFound to false.
Both this event and QueryQuotas cause a quota enumeration to be started; the CloseQuotasEnumeration event will fire when the OS has finished setting/updating/removing quota information.

Descriptions of the QuotaUsed, QuotaThreshold, and QuotaLimit parameters can be found in the Windows API's DISKQUOTA_USER_INFORMATION structure documentation.

The EnumerationContext parameter is a placeholder for application-defined data associated with the enumeration. Please refer to the Contexts topic for more information.

Please refer to the Buffer Parameters topic for more information on how to work with memory buffer event parameters.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource isn't available, security checks failed, etc.), set it to a non-zero value to report an appropriate error. Please refer to the Error Reporting and Handling topic for more information.

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CBFS Connect 2020 C++ Edition - Version 20.0 [Build 7545]