linux-kernel - [PATCH v5 09/12] KEYS: link secondary_trusted

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Message-Id: <20210907160110.2699645-10-eric.snowberg@oracle.com>
Date:   Tue,  7 Sep 2021 12:01:07 -0400
From:   Eric Snowberg <eric.snowberg@...cle.com>
To:     keyrings@...r.kernel.org, linux-integrity@...r.kernel.org,
        zohar@...ux.ibm.com, dhowells@...hat.com, dwmw2@...radead.org,
        herbert@...dor.apana.org.au, davem@...emloft.net,
        jarkko@...nel.org, jmorris@...ei.org, serge@...lyn.com
Cc:     eric.snowberg@...cle.com, keescook@...omium.org,
        gregkh@...uxfoundation.org, torvalds@...ux-foundation.org,
        scott.branden@...adcom.com, weiyongjun1@...wei.com,
        nayna@...ux.ibm.com, ebiggers@...gle.com, ardb@...nel.org,
        nramas@...ux.microsoft.com, lszubowi@...hat.com,
        linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        James.Bottomley@...senPartnership.com, pjones@...hat.com,
        konrad.wilk@...cle.com
Subject: [PATCH v5 09/12] KEYS: link secondary_trusted_keys to machine trusted keys

Allow the .machine keyring to be linked to the secondary_trusted_keys.
After the link is created, keys contained in the .machine keyring will
automatically be searched when searching secondary_trusted_keys.

Signed-off-by: Eric Snowberg <eric.snowberg@...cle.com>
---
v3: Initial version
v4: Unmodified from v3
v5: Rename to machine keyring
---
 certs/system_keyring.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/certs/system_keyring.c b/certs/system_keyring.c
index 747f0c528fec..e414b80f2135 100644
--- a/certs/system_keyring.c
+++ b/certs/system_keyring.c
@@ -101,6 +101,9 @@ static __init struct key_restriction *get_builtin_and_secondary_restriction(void
 void __init set_machine_trusted_keys(struct key *keyring)
 {
 	machine_trusted_keys = keyring;
+
+	if (key_link(secondary_trusted_keys, machine_trusted_keys) < 0)
+		panic("Can't link (machine) trusted keyrings\n");
 }
 
 /**
-- 
2.18.4