ACL Structure

Type ACL
  AclRevision As Byte
  Sbz1 As Byte
  AclSize As Integer
  AceCount As Integer
  Sbz2 As Integer
End Type

ACL-type variables store information about an access-control list (ACL). The ACL structure is followed by zero or more access-control entries (ACEs) which the ACL is made up of. Note how the ACEs are not actually stored inside the ACL structure.

AclRevision

Must be set to the following flag which specifies the ACL's revision level:

ACL_REVISION = 2

The only valid revision level.

Sbz1

Reserved -- set to 0. This member merely aligns the structure's other members in memory.

AclSize

The combined size in bytes of this structure and all of the ACEs which follow it.

AceCount

The number of ACEs which follow this structure.

Sbz2

Reserved -- set to 0. This member merely aligns the structure's other members in memory.

Used by: SECURITY_DESCRIPTOR
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