1/*
2 * Copyright (c) 2004 Apple Computer, Inc. All Rights Reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23
24
25//
26// child - track a single child process and its belongings
27//
28#ifndef _CHILD_H_
29#define _CHILD_H_  1
30
31#include <security_utilities/mach++.h>
32#include <security_utilities/unixchild.h>
33
34using MachPlusPlus::Port;
35using MachPlusPlus::TaskPort;
36
37
38//
39// ServerChild builds on the generic UNIX Child abstraction.
40// The child is expected to engage in a checkin protocol after launch,
41// whereby it RPC-calls childCheckIn in securityd and thus authenticates
42// and declares readiness to provide service.
43//
44// @@@ PerWhat are these, if they are at all?
45//
46class ServerChild : public UnixPlusPlus::Child {
47public:
48	ServerChild();
49	~ServerChild();
50
51	Port servicePort() const { return mServicePort; }
52	bool ready() const { return mServicePort; }
53
54public:
55	static void checkIn(Port servicePort, pid_t pid);
56
57protected:
58	void childAction() = 0;		// must be provided by subclass
59	void parentAction();		// fully implemented
60	void dying();				// fully implemented
61
62private:
63	Port mServicePort;			// child's main service port
64
65private:
66	typedef map<pid_t, ServerChild *> CheckinMap;
67	static CheckinMap mCheckinMap;
68
69	// The parent side will wait on mCheckinCond until the child checks in
70	// or fails. During that time ONLY, mCheckinLock protects the entire Child
71	// object.
72	static Mutex mCheckinLock;
73	Condition mCheckinCond;
74};
75
76
77#endif // _CHILD_H_
78