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// Copyright (C) 2016 Luke Shumaker <lukeshu@sbcglobal.net>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package sd_login TODO
//
// The login manager manages 4 basic object types
//
// - machine: A container or virtual machine
//
// - seat: A set of hardware devices for a workspace; ie a screen
// and keyboard
//
// - session: A login session; tied to 0 or 1 seats (0 for things
// like SSH login)
//
// - user: Keeps track of logged in users; that is, users with 1 or
// more sessions
//
// TODO: why are machines part of this?
//
// - pid: A process may belong to a session, or directly to a user if
// it is not part of a session. This "belonging" is separate
// accounting by the login manager; it is NOT the same as the
// EUID/RUID.
//
// - peer: A peer is a process on the other end of a AF_UNIX socket.
package sd_login
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