ACE

An ACE is an access-control entry (ACE) in an access-control list (ACL).

Following are the currently defined ACE types:

ACE type	Structure	ACL Type
Access allowed	ACCESS_ALLOWED_ACE	Discretionary
Access denied	ACCESS_DENIED_ACE	Discretionary
System alarm	SYSTEM_ALARM_ACE	System
System audit	SYSTEM_AUDIT_ACE	System

System-alarm ACEs are not supported in the current version of Windows NT.

Remarks

An ACL contains a list of ACEs. An ACE defines access to an object for a specific user or group or defines the types of access that generate system-administration messages or alarms for a specific user or group. The user or group is identified by a security identifier (SID).

Each ACE starts with an ACE_HEADER structure. The format of the data following the header varies according to the ACE type specified in the header.

See Also

AddAce, ACCESS_ALLOWED_ACE, ACCESS_DENIED_ACE, ACL, SYSTEM_ALARM_ACE, SYSTEM_AUDIT_ACE

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