public WorkItem(ClrPermissions permissions,
AsyncCallback callback, Object state)
{
this.permissions = permissions;
this.userWorkItem = true;
this.callback3 = callback;
this.state = state;
}
public WorkItem(ClrPermissions permissions, WaitHandle waitObject,
WaitOrTimerCallback callback, Object state,
int millisecondsTimeOutInterval, bool executeOnlyOnce)
{
this.permissions = permissions;
this.userWorkItem = false;
this.callback2 = callback;
this.state = state;
this.timeout = millisecondsTimeOutInterval;
this.once = executeOnlyOnce;
this.registered = true;
}
// Deny permissions to the caller.
internal void Deny(int skipFrames)
{
// Add the permission to the denied permissions set.
ClrPermissions current;
current = ClrSecurity.GetPermissionsFrom(skipFrames);
PermissionSet set = new PermissionSet(PermissionState.None);
set.AddPermission(this.Copy());
if(current == null)
{
// Initialize the permissions context to "allow
// everything except this permission object".
current = new ClrPermissions
(new PermissionSet(PermissionState.Unrestricted),
set, null);
}
else
{
current = current.SetDenied(set.Union(current.denied));
}
ClrSecurity.SetPermissions(current, skipFrames);
}
// Set the caller's permissions to only this object.
internal static void PermitOnly(PermissionSet set, int skipFrames)
{
// Make sure that we don't already have a "PermitOnly" value.
ClrPermissions current;
current = ClrSecurity.GetPermissionsFrom(skipFrames);
if(current != null && current.permitOnly != null)
{
throw new SecurityException(_("Exception_PermitOnly"));
}
// Add the "PermitOnly" set to the call stack.
if(current == null)
{
// Initialize the permissions context to "allow
// only this permission object".
current = new ClrPermissions
(new PermissionSet(PermissionState.Unrestricted),
new PermissionSet(PermissionState.None),
set);
}
else
{
current = current.SetPermitOnly(set);
}
ClrSecurity.SetPermissions(current, skipFrames);
}
public WorkItem(ClrPermissions permissions, WaitHandle waitObject,
WaitOrTimerCallback callback, Object state,
int millisecondsTimeOutInterval, bool executeOnlyOnce)
{
this.permissions = permissions;
this.userWorkItem = false;
this.callback2 = callback;
this.state = state;
this.timeout = millisecondsTimeOutInterval;
this.once = executeOnlyOnce;
this.registered = true;
}
public WorkItem(ClrPermissions permissions,
AsyncCallback callback, Object state)
{
this.permissions = permissions;
this.userWorkItem = true;
this.callback3 = callback;
this.state = state;
}
extern public static void SetPermissions (ClrPermissions perm, int skipFrames);
