1/*	$OpenBSD: scheduler_null.c,v 1.11 2021/06/14 17:58:16 eric Exp $	*/
2
3/*
4 * Copyright (c) 2012 Eric Faurot <eric@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19#include "smtpd.h"
20
21static int scheduler_null_init(const char *);
22static int scheduler_null_insert(struct scheduler_info *);
23static size_t scheduler_null_commit(uint32_t);
24static size_t scheduler_null_rollback(uint32_t);
25static int scheduler_null_update(struct scheduler_info *);
26static int scheduler_null_delete(uint64_t);
27static int scheduler_null_hold(uint64_t, uint64_t);
28static int scheduler_null_release(int, uint64_t, int);
29static int scheduler_null_batch(int, int*, size_t*, uint64_t*, int*);
30static size_t scheduler_null_messages(uint32_t, uint32_t *, size_t);
31static size_t scheduler_null_envelopes(uint64_t, struct evpstate *, size_t);
32static int scheduler_null_schedule(uint64_t);
33static int scheduler_null_remove(uint64_t);
34static int scheduler_null_suspend(uint64_t);
35static int scheduler_null_resume(uint64_t);
36
37struct scheduler_backend scheduler_backend_null = {
38	scheduler_null_init,
39
40	scheduler_null_insert,
41	scheduler_null_commit,
42	scheduler_null_rollback,
43
44	scheduler_null_update,
45	scheduler_null_delete,
46	scheduler_null_hold,
47	scheduler_null_release,
48
49	scheduler_null_batch,
50
51	scheduler_null_messages,
52	scheduler_null_envelopes,
53	scheduler_null_schedule,
54	scheduler_null_remove,
55	scheduler_null_suspend,
56	scheduler_null_resume,
57};
58
59static int
60scheduler_null_init(const char *arg)
61{
62	return (1);
63}
64
65static int
66scheduler_null_insert(struct scheduler_info *si)
67{
68	return (0);
69}
70
71static size_t
72scheduler_null_commit(uint32_t msgid)
73{
74	return (0);
75}
76
77static size_t
78scheduler_null_rollback(uint32_t msgid)
79{
80	return (0);
81}
82
83static int
84scheduler_null_update(struct scheduler_info *si)
85{
86	return (0);
87}
88
89static int
90scheduler_null_delete(uint64_t evpid)
91{
92	return (0);
93}
94
95static int
96scheduler_null_hold(uint64_t evpid, uint64_t holdq)
97{
98	return (0);
99}
100
101static int
102scheduler_null_release(int type, uint64_t holdq, int n)
103{
104	return (0);
105}
106
107static int
108scheduler_null_batch(int typemask, int *delay, size_t *count, uint64_t *evpids, int *types)
109{
110	*delay = 0;
111
112	return (0);
113}
114
115static int
116scheduler_null_schedule(uint64_t evpid)
117{
118	return (0);
119}
120
121static int
122scheduler_null_remove(uint64_t evpid)
123{
124	return (0);
125}
126
127static int
128scheduler_null_suspend(uint64_t evpid)
129{
130	return (0);
131}
132
133static int
134scheduler_null_resume(uint64_t evpid)
135{
136	return (0);
137}
138
139static size_t
140scheduler_null_messages(uint32_t from, uint32_t *dst, size_t size)
141{
142	return (0);
143}
144
145static size_t
146scheduler_null_envelopes(uint64_t from, struct evpstate *dst, size_t size)
147{
148	return (0);
149}
150