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crypto/linux_keyring: add 'secret_keyring' secret object.

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Add the ability for the secret object to obtain secret data from the
Linux in-kernel key managment and retention facility, as an extra option
to the existing ones: reading from a file or passing directly as a
string.

The secret is identified by the key serial number. The upper layers
need to instantiate the key and make sure the QEMU process has access
permissions to read it.

Signed-off-by: Alexey Krasikov <alex-krasikov@yandex-team.ru>

 - Fixed up detection logic default behaviour in configure

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Alexey Krasikov 2020-05-25 14:19:12 +03:00 • committed by Daniel P. Berrangé
parent 4862bd3cd2
commit 54e7aac056
4 changed files with 246 additions and 0 deletions
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52
include/crypto/secret_keyring.h Normal file
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/*
* QEMU crypto secret support
*
* Copyright 2020 Yandex N.V.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef QCRYPTO_SECRET_KEYRING_H
#define QCRYPTO_SECRET_KEYRING_H
#include "qapi/qapi-types-crypto.h"
#include "qom/object.h"
#include "crypto/secret_common.h"
#define TYPE_QCRYPTO_SECRET_KEYRING "secret_keyring"
#define QCRYPTO_SECRET_KEYRING(obj) \
OBJECT_CHECK(QCryptoSecretKeyring, (obj), \
TYPE_QCRYPTO_SECRET_KEYRING)
#define QCRYPTO_SECRET_KEYRING_CLASS(class) \
OBJECT_CLASS_CHECK(QCryptoSecretKeyringClass, \
(class), TYPE_QCRYPTO_SECRET_KEYRING)
#define QCRYPTO_SECRET_KEYRING_GET_CLASS(class) \
OBJECT_GET_CLASS(QCryptoSecretKeyringClass, \
(class), TYPE_QCRYPTO_SECRET_KEYRING)
typedef struct QCryptoSecretKeyring QCryptoSecretKeyring;
typedef struct QCryptoSecretKeyringClass QCryptoSecretKeyringClass;
typedef struct QCryptoSecretKeyring {
QCryptoSecretCommon parent;
int32_t serial;
} QCryptoSecretKeyring;
typedef struct QCryptoSecretKeyringClass {
QCryptoSecretCommonClass parent;
} QCryptoSecretKeyringClass;
#endif /* QCRYPTO_SECRET_KEYRING_H */