Linux kernel mirror (for testing)
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1// SPDX-License-Identifier: GPL-2.0-or-later
2/* Key management controls
3 *
4 * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.com)
6 */
7
8#include <linux/key.h>
9#include <linux/sysctl.h>
10#include "internal.h"
11
12static const int zero, one = 1, max = INT_MAX;
13
14struct ctl_table key_sysctls[] = {
15 {
16 .procname = "maxkeys",
17 .data = &key_quota_maxkeys,
18 .maxlen = sizeof(unsigned),
19 .mode = 0644,
20 .proc_handler = proc_dointvec_minmax,
21 .extra1 = (void *) &one,
22 .extra2 = (void *) &max,
23 },
24 {
25 .procname = "maxbytes",
26 .data = &key_quota_maxbytes,
27 .maxlen = sizeof(unsigned),
28 .mode = 0644,
29 .proc_handler = proc_dointvec_minmax,
30 .extra1 = (void *) &one,
31 .extra2 = (void *) &max,
32 },
33 {
34 .procname = "root_maxkeys",
35 .data = &key_quota_root_maxkeys,
36 .maxlen = sizeof(unsigned),
37 .mode = 0644,
38 .proc_handler = proc_dointvec_minmax,
39 .extra1 = (void *) &one,
40 .extra2 = (void *) &max,
41 },
42 {
43 .procname = "root_maxbytes",
44 .data = &key_quota_root_maxbytes,
45 .maxlen = sizeof(unsigned),
46 .mode = 0644,
47 .proc_handler = proc_dointvec_minmax,
48 .extra1 = (void *) &one,
49 .extra2 = (void *) &max,
50 },
51 {
52 .procname = "gc_delay",
53 .data = &key_gc_delay,
54 .maxlen = sizeof(unsigned),
55 .mode = 0644,
56 .proc_handler = proc_dointvec_minmax,
57 .extra1 = (void *) &zero,
58 .extra2 = (void *) &max,
59 },
60#ifdef CONFIG_PERSISTENT_KEYRINGS
61 {
62 .procname = "persistent_keyring_expiry",
63 .data = &persistent_keyring_expiry,
64 .maxlen = sizeof(unsigned),
65 .mode = 0644,
66 .proc_handler = proc_dointvec_minmax,
67 .extra1 = (void *) &zero,
68 .extra2 = (void *) &max,
69 },
70#endif
71 { }
72};