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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /security/integrity/ima/ima_mok.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'security/integrity/ima/ima_mok.c')
-rw-r--r--security/integrity/ima/ima_mok.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/security/integrity/ima/ima_mok.c b/security/integrity/ima/ima_mok.c
new file mode 100644
index 000000000..95cc31525
--- /dev/null
+++ b/security/integrity/ima/ima_mok.c
@@ -0,0 +1,49 @@
+// 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>
+
+
+struct key *ima_blacklist_keyring;
+
+/*
+ * Allocate the IMA blacklist keyring
+ */
+static __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(),
+ (KEY_POS_ALL & ~KEY_POS_SETATTR) |
+ KEY_USR_VIEW | KEY_USR_READ |
+ KEY_USR_WRITE | KEY_USR_SEARCH,
+ KEY_ALLOC_NOT_IN_QUOTA |
+ KEY_ALLOC_SET_KEEP,
+ restriction, NULL);
+
+ if (IS_ERR(ima_blacklist_keyring))
+ panic("Can't allocate IMA blacklist keyring.");
+ return 0;
+}
+device_initcall(ima_mok_init);