// SPDX-License-Identifier: GPL-2.0-or-later
/* Key management controls
 *
 * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 */

#include <linux/key.h>
#include <linux/sysctl.h>
#include "internal.h"

static const struct ctl_table key_sysctls[] = {
        {
                .procname = "maxkeys",
                .data = &key_quota_maxkeys,
                .maxlen = sizeof(unsigned),
                .mode = 0644,
                .proc_handler = proc_dointvec_minmax,
                .extra1 = (void *) SYSCTL_ONE,
                .extra2 = (void *) SYSCTL_INT_MAX,
        },
        {
                .procname = "maxbytes",
                .data = &key_quota_maxbytes,
                .maxlen = sizeof(unsigned),
                .mode = 0644,
                .proc_handler = proc_dointvec_minmax,
                .extra1 = (void *) SYSCTL_ONE,
                .extra2 = (void *) SYSCTL_INT_MAX,
        },
        {
                .procname = "root_maxkeys",
                .data = &key_quota_root_maxkeys,
                .maxlen = sizeof(unsigned),
                .mode = 0644,
                .proc_handler = proc_dointvec_minmax,
                .extra1 = (void *) SYSCTL_ONE,
                .extra2 = (void *) SYSCTL_INT_MAX,
        },
        {
                .procname = "root_maxbytes",
                .data = &key_quota_root_maxbytes,
                .maxlen = sizeof(unsigned),
                .mode = 0644,
                .proc_handler = proc_dointvec_minmax,
                .extra1 = (void *) SYSCTL_ONE,
                .extra2 = (void *) SYSCTL_INT_MAX,
        },
        {
                .procname = "gc_delay",
                .data = &key_gc_delay,
                .maxlen = sizeof(unsigned),
                .mode = 0644,
                .proc_handler = proc_dointvec_minmax,
                .extra1 = (void *) SYSCTL_ZERO,
                .extra2 = (void *) SYSCTL_INT_MAX,
        },
#ifdef CONFIG_PERSISTENT_KEYRINGS
        {
                .procname = "persistent_keyring_expiry",
                .data = &persistent_keyring_expiry,
                .maxlen = sizeof(unsigned),
                .mode = 0644,
                .proc_handler = proc_dointvec_minmax,
                .extra1 = (void *) SYSCTL_ZERO,
                .extra2 = (void *) SYSCTL_INT_MAX,
        },
#endif
};

static int __init init_security_keys_sysctls(void)
{
        register_sysctl_init("kernel/keys", key_sysctls);
        return 0;
}
early_initcall(init_security_keys_sysctls);