add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/security/integrity/digsig_asymmetric.c
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@@ -1,16 +1,10 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright (C) 2013 Intel Corporation
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  *
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  * Author:
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  * Dmitry Kasatkin <dmitry.kasatkin@intel.com>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation, version 2 of the License.
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- *
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  */
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-
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-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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 #include <linux/err.h>
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 #include <linux/ratelimit.h>
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@@ -39,7 +33,7 @@
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 		key_ref_t kref;
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 		kref = keyring_search(make_key_ref(key, 1),
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-				     &key_type_asymmetric, name);
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+				      &key_type_asymmetric, name, true);
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 		if (!IS_ERR(kref)) {
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 			pr_err("Key '%s' is in ima_blacklist_keyring\n", name);
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 			return ERR_PTR(-EKEYREJECTED);
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@@ -51,7 +45,7 @@
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 		key_ref_t kref;
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 		kref = keyring_search(make_key_ref(keyring, 1),
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-				      &key_type_asymmetric, name);
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+				      &key_type_asymmetric, name, true);
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 		if (IS_ERR(kref))
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 			key = ERR_CAST(kref);
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 		else
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@@ -61,8 +55,14 @@
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 	}
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 	if (IS_ERR(key)) {
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-		pr_err_ratelimited("Request for unknown key '%s' err %ld\n",
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-				   name, PTR_ERR(key));
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+		if (keyring)
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+			pr_err_ratelimited("Request for unknown key '%s' in '%s' keyring. err %ld\n",
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+					   name, keyring->description,
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+					   PTR_ERR(key));
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+		else
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+			pr_err_ratelimited("Request for unknown key '%s' err %ld\n",
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+					   name, PTR_ERR(key));
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+
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 		switch (PTR_ERR(key)) {
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 			/* Hide some search errors */
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 		case -EACCES:
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@@ -85,7 +85,7 @@
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 	struct public_key_signature pks;
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 	struct signature_v2_hdr *hdr = (struct signature_v2_hdr *)sig;
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 	struct key *key;
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-	int ret = -ENOMEM;
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+	int ret;
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 	if (siglen <= sizeof(*hdr))
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 		return -EBADMSG;
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@@ -104,8 +104,24 @@
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 	memset(&pks, 0, sizeof(pks));
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-	pks.pkey_algo = "rsa";
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 	pks.hash_algo = hash_algo_name[hdr->hash_algo];
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+	switch (hdr->hash_algo) {
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+	case HASH_ALGO_STREEBOG_256:
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+	case HASH_ALGO_STREEBOG_512:
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+		/* EC-RDSA and Streebog should go together. */
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+		pks.pkey_algo = "ecrdsa";
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+		pks.encoding = "raw";
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+		break;
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+	case HASH_ALGO_SM3_256:
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+		/* SM2 and SM3 should go together. */
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+		pks.pkey_algo = "sm2";
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+		pks.encoding = "raw";
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+		break;
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+	default:
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+		pks.pkey_algo = "rsa";
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+		pks.encoding = "pkcs1";
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+		break;
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+	}
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 	pks.digest = (u8 *)data;
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 	pks.digest_size = datalen;
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 	pks.s = hdr->sig;