KnownAce.cs

using System.Security.Principal;

namespace System.Security.AccessControl
{
    public abstract class KnownAce : GenericAce
    {
        private int _accessMask;

        private SecurityIdentifier _sid;

        internal const int AccessMaskLength = 4;

        public int AccessMask
        {
            get
            {
                return _accessMask;
            }
            set
            {
                _accessMask = value;
            }
        }

        public SecurityIdentifier SecurityIdentifier
        {
            get
            {
                return _sid;
            }
            set
            {
                if (value == null)
                {
                    throw new ArgumentNullException("value");
                }
                _sid = value;
            }
        }

        internal KnownAce(AceType type, AceFlags flags, int accessMask, SecurityIdentifier securityIdentifier)
            : base(type, flags)
        {
            if (securityIdentifier == null)
            {
                throw new ArgumentNullException("securityIdentifier");
            }
            AccessMask = accessMask;
            SecurityIdentifier = securityIdentifier;
        }
    }
}