// SPDX-License-Identifier: GPL-2.0+ /* * Platform keyring for firmware/platform keys * * Copyright IBM Corporation, 2018 * Author(s): Nayna Jain <nayna@linux.ibm.com> */ #include <linux/export.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/cred.h> #include <linux/err.h> #include <linux/slab.h> #include "../integrity.h" /** * add_to_platform_keyring - Add to platform keyring without validation. * @source: Source of key * @data: The blob holding the key * @len: The length of the data blob * * Add a key to the platform keyring without checking its trust chain. This * is available only during kernel initialisation. */ void __init add_to_platform_keyring(const char *source, const void *data, size_t len) { key_perm_t perm; int rc; perm = (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW; rc = integrity_load_cert(INTEGRITY_KEYRING_PLATFORM, source, data, len, perm); if (rc) pr_info("Error adding keys to platform keyring %s\n", source); } /* * Create the trusted keyrings. */ static __init int platform_keyring_init(void) { int rc; rc = integrity_init_keyring(INTEGRITY_KEYRING_PLATFORM); if (rc) return rc; pr_notice("Platform Keyring initialized\n"); return 0; } /* * Must be initialised before we try and load the keys into the keyring. */ device_initcall(platform_keyring_init);