1 // SPDX-License-Identifier: GPL-2.0-only 1 // SPDX-License-Identifier: GPL-2.0-only
2 /* 2 /*
3 * Copyright (C) 2015 Juniper Networks, Inc. 3 * Copyright (C) 2015 Juniper Networks, Inc.
4 * 4 *
5 * Author: 5 * Author:
6 * Petko Manolov <petko.manolov@konsulko.com> 6 * Petko Manolov <petko.manolov@konsulko.com>
7 */ 7 */
8 8
9 #include <linux/export.h> 9 #include <linux/export.h>
10 #include <linux/kernel.h> 10 #include <linux/kernel.h>
11 #include <linux/sched.h> 11 #include <linux/sched.h>
12 #include <linux/cred.h> 12 #include <linux/cred.h>
13 #include <linux/err.h> 13 #include <linux/err.h>
14 #include <linux/init.h> 14 #include <linux/init.h>
15 #include <linux/slab.h> 15 #include <linux/slab.h>
16 #include <keys/system_keyring.h> 16 #include <keys/system_keyring.h>
17 17
18 18
19 struct key *ima_blacklist_keyring; 19 struct key *ima_blacklist_keyring;
20 20
21 /* 21 /*
22 * Allocate the IMA blacklist keyring 22 * Allocate the IMA blacklist keyring
23 */ 23 */
24 static __init int ima_mok_init(void) 24 static __init int ima_mok_init(void)
25 { 25 {
26 struct key_restriction *restriction; 26 struct key_restriction *restriction;
27 27
28 pr_notice("Allocating IMA blacklist ke 28 pr_notice("Allocating IMA blacklist keyring.\n");
29 29
30 restriction = kzalloc(sizeof(struct ke 30 restriction = kzalloc(sizeof(struct key_restriction), GFP_KERNEL);
31 if (!restriction) 31 if (!restriction)
32 panic("Can't allocate IMA blac 32 panic("Can't allocate IMA blacklist restriction.");
33 33
34 restriction->check = restrict_link_by_ 34 restriction->check = restrict_link_by_builtin_trusted;
35 35
36 ima_blacklist_keyring = keyring_alloc( 36 ima_blacklist_keyring = keyring_alloc(".ima_blacklist",
37 KUIDT_INIT(0), 37 KUIDT_INIT(0), KGIDT_INIT(0), current_cred(),
38 (KEY_POS_ALL & 38 (KEY_POS_ALL & ~KEY_POS_SETATTR) |
39 KEY_USR_VIEW | 39 KEY_USR_VIEW | KEY_USR_READ |
40 KEY_USR_WRITE 40 KEY_USR_WRITE | KEY_USR_SEARCH,
41 KEY_ALLOC_NOT_ 41 KEY_ALLOC_NOT_IN_QUOTA |
42 KEY_ALLOC_SET_ 42 KEY_ALLOC_SET_KEEP,
43 restriction, N 43 restriction, NULL);
44 44
45 if (IS_ERR(ima_blacklist_keyring)) 45 if (IS_ERR(ima_blacklist_keyring))
46 panic("Can't allocate IMA blac 46 panic("Can't allocate IMA blacklist keyring.");
47 return 0; 47 return 0;
48 } 48 }
49 device_initcall(ima_mok_init); 49 device_initcall(ima_mok_init);
50 50
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