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[mirror_ubuntu-bionic-kernel.git] / security / keys / sysctl.c
1 /* Key management controls
2 *
3 * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
10 */
11
12 #include <linux/key.h>
13 #include <linux/sysctl.h>
14 #include "internal.h"
15
16 static const int zero, one = 1, max = INT_MAX;
17
18 struct ctl_table key_sysctls[] = {
19 {
20 .procname = "maxkeys",
21 .data = &key_quota_maxkeys,
22 .maxlen = sizeof(unsigned),
23 .mode = 0644,
24 .proc_handler = proc_dointvec_minmax,
25 .extra1 = (void *) &one,
26 .extra2 = (void *) &max,
27 },
28 {
29 .procname = "maxbytes",
30 .data = &key_quota_maxbytes,
31 .maxlen = sizeof(unsigned),
32 .mode = 0644,
33 .proc_handler = proc_dointvec_minmax,
34 .extra1 = (void *) &one,
35 .extra2 = (void *) &max,
36 },
37 {
38 .procname = "root_maxkeys",
39 .data = &key_quota_root_maxkeys,
40 .maxlen = sizeof(unsigned),
41 .mode = 0644,
42 .proc_handler = proc_dointvec_minmax,
43 .extra1 = (void *) &one,
44 .extra2 = (void *) &max,
45 },
46 {
47 .procname = "root_maxbytes",
48 .data = &key_quota_root_maxbytes,
49 .maxlen = sizeof(unsigned),
50 .mode = 0644,
51 .proc_handler = proc_dointvec_minmax,
52 .extra1 = (void *) &one,
53 .extra2 = (void *) &max,
54 },
55 {
56 .procname = "gc_delay",
57 .data = &key_gc_delay,
58 .maxlen = sizeof(unsigned),
59 .mode = 0644,
60 .proc_handler = proc_dointvec_minmax,
61 .extra1 = (void *) &zero,
62 .extra2 = (void *) &max,
63 },
64 #ifdef CONFIG_PERSISTENT_KEYRINGS
65 {
66 .procname = "persistent_keyring_expiry",
67 .data = &persistent_keyring_expiry,
68 .maxlen = sizeof(unsigned),
69 .mode = 0644,
70 .proc_handler = proc_dointvec_minmax,
71 .extra1 = (void *) &zero,
72 .extra2 = (void *) &max,
73 },
74 #endif
75 { }
76 };