Import QEMU upstream snapshot d2e570c

Upstream: https://gitlab.com/qemu-project/qemu.git

Upstream-Commit: d2e570cc0f97b936902a5b1b86b73c0f5998b475

crypto/blockpriv.h

@@ -0,0 +1,142 @@
+/*
+ * QEMU Crypto block device encryption
+ *
+ * Copyright (c) 2015-2016 Red Hat, Inc.
+ *
+ * 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_BLOCKPRIV_H
+#define QCRYPTO_BLOCKPRIV_H
+
+#include "crypto/block.h"
+#include "qemu/thread.h"
+
+typedef struct QCryptoBlockDriver QCryptoBlockDriver;
+
+struct QCryptoBlock {
+    QCryptoBlockFormat format;
+
+    const QCryptoBlockDriver *driver;
+    void *opaque;
+
+    /* Cipher parameters */
+    QCryptoCipherAlgo alg;
+    QCryptoCipherMode mode;
+    uint8_t *key;
+    size_t nkey;
+
+    QCryptoCipher **free_ciphers;
+    size_t max_free_ciphers;
+    size_t n_free_ciphers;
+    QCryptoIVGen *ivgen;
+    QemuMutex mutex;
+
+    QCryptoHashAlgo kdfhash;
+    size_t niv;
+    uint64_t payload_offset; /* In bytes */
+    uint64_t sector_size; /* In bytes */
+
+    bool detached_header; /* True if disk has a detached LUKS header */
+};
+
+struct QCryptoBlockDriver {
+    int (*open)(QCryptoBlock *block,
+                QCryptoBlockOpenOptions *options,
+                const char *optprefix,
+                QCryptoBlockReadFunc readfunc,
+                void *opaque,
+                unsigned int flags,
+                Error **errp);
+
+    int (*create)(QCryptoBlock *block,
+                  QCryptoBlockCreateOptions *options,
+                  const char *optprefix,
+                  QCryptoBlockInitFunc initfunc,
+                  QCryptoBlockWriteFunc writefunc,
+                  void *opaque,
+                  Error **errp);
+
+    int (*amend)(QCryptoBlock *block,
+                 QCryptoBlockReadFunc readfunc,
+                 QCryptoBlockWriteFunc writefunc,
+                 void *opaque,
+                 QCryptoBlockAmendOptions *options,
+                 bool force,
+                 Error **errp);
+
+    int (*get_info)(QCryptoBlock *block,
+                    QCryptoBlockInfo *info,
+                    Error **errp);
+
+    void (*cleanup)(QCryptoBlock *block);
+
+    int (*encrypt)(QCryptoBlock *block,
+                   uint64_t startsector,
+                   uint8_t *buf,
+                   size_t len,
+                   Error **errp);
+    int (*decrypt)(QCryptoBlock *block,
+                   uint64_t startsector,
+                   uint8_t *buf,
+                   size_t len,
+                   Error **errp);
+
+    bool (*has_format)(const uint8_t *buf,
+                       size_t buflen);
+};
+
+
+int qcrypto_block_cipher_decrypt_helper(QCryptoCipher *cipher,
+                                        size_t niv,
+                                        QCryptoIVGen *ivgen,
+                                        int sectorsize,
+                                        uint64_t offset,
+                                        uint8_t *buf,
+                                        size_t len,
+                                        Error **errp);
+
+int qcrypto_block_cipher_encrypt_helper(QCryptoCipher *cipher,
+                                        size_t niv,
+                                        QCryptoIVGen *ivgen,
+                                        int sectorsize,
+                                        uint64_t offset,
+                                        uint8_t *buf,
+                                        size_t len,
+                                        Error **errp);
+
+int qcrypto_block_decrypt_helper(QCryptoBlock *block,
+                                 int sectorsize,
+                                 uint64_t offset,
+                                 uint8_t *buf,
+                                 size_t len,
+                                 Error **errp);
+
+int qcrypto_block_encrypt_helper(QCryptoBlock *block,
+                                 int sectorsize,
+                                 uint64_t offset,
+                                 uint8_t *buf,
+                                 size_t len,
+                                 Error **errp);
+
+int qcrypto_block_init_cipher(QCryptoBlock *block,
+                              QCryptoCipherAlgo alg,
+                              QCryptoCipherMode mode,
+                              const uint8_t *key, size_t nkey,
+                              Error **errp);
+
+void qcrypto_block_free_cipher(QCryptoBlock *block);
+
+#endif /* QCRYPTO_BLOCKPRIV_H */