1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2015 Juniper Networks, Inc.
*
* Author:
* Petko Manolov <petko.manolov@konsulko.com>
*/
#include <linux/export.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/cred.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <keys/system_keyring.h>
static struct key_acl integrity_blacklist_keyring_acl = {
.usage = REFCOUNT_INIT(1),
.nr_ace = 2,
.aces = {
KEY_POSSESSOR_ACE(KEY_ACE_SEARCH | KEY_ACE_WRITE),
KEY_OWNER_ACE(KEY_ACE_VIEW | KEY_ACE_READ | KEY_ACE_WRITE | KEY_ACE_SEARCH),
}
};
struct key *ima_blacklist_keyring;
/*
* Allocate the IMA blacklist keyring
*/
__init int ima_mok_init(void)
{
struct key_restriction *restriction;
pr_notice("Allocating IMA blacklist keyring.\n");
restriction = kzalloc(sizeof(struct key_restriction), GFP_KERNEL);
if (!restriction)
panic("Can't allocate IMA blacklist restriction.");
restriction->check = restrict_link_by_builtin_trusted;
ima_blacklist_keyring = keyring_alloc(".ima_blacklist",
KUIDT_INIT(0), KGIDT_INIT(0), current_cred(),
&integrity_blacklist_keyring_acl,
KEY_ALLOC_NOT_IN_QUOTA,
restriction, NULL);
if (IS_ERR(ima_blacklist_keyring))
panic("Can't allocate IMA blacklist keyring.");
set_bit(KEY_FLAG_KEEP, &ima_blacklist_keyring->flags);
return 0;
}
device_initcall(ima_mok_init);
|
