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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 08:06:26 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 08:06:26 +0000
commit1660d4b7a65d9ad2ce0deaa19d35579ca4084ac5 (patch)
tree6cf8220b628ebd2ccfc1375dd6516c6996e9abcc /lib/utils_storage_wrappers.h
parentInitial commit. (diff)
downloadcryptsetup-1660d4b7a65d9ad2ce0deaa19d35579ca4084ac5.tar.xz
cryptsetup-1660d4b7a65d9ad2ce0deaa19d35579ca4084ac5.zip
Adding upstream version 2:2.6.1.upstream/2%2.6.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/utils_storage_wrappers.h')
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diff --git a/lib/utils_storage_wrappers.h b/lib/utils_storage_wrappers.h
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+/*
+ * Generic wrapper for storage functions
+ * (experimental only)
+ *
+ * Copyright (C) 2018-2023 Ondrej Kozina
+ *
+ * This file 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 file 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 file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef _UTILS_STORAGE_WRAPPERS_H
+#define _UTILS_STORAGE_WRAPPERS_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+struct crypt_storage_wrapper;
+struct device;
+struct volume_key;
+struct crypt_device;
+
+#define DISABLE_USPACE (1 << 0)
+#define DISABLE_KCAPI (1 << 1)
+#define DISABLE_DMCRYPT (1 << 2)
+#define OPEN_READONLY (1 << 3)
+#define LARGE_IV (1 << 4)
+
+typedef enum {
+ NONE = 0,
+ USPACE,
+ DMCRYPT
+} crypt_storage_wrapper_type;
+
+int crypt_storage_wrapper_init(struct crypt_device *cd,
+ struct crypt_storage_wrapper **cw,
+ struct device *device,
+ uint64_t data_offset,
+ uint64_t iv_start,
+ int sector_size,
+ const char *cipher,
+ struct volume_key *vk,
+ uint32_t flags);
+
+void crypt_storage_wrapper_destroy(struct crypt_storage_wrapper *cw);
+
+/* !!! when doing 'read' or 'write' all offset values are RELATIVE to data_offset !!! */
+ssize_t crypt_storage_wrapper_read(struct crypt_storage_wrapper *cw,
+ off_t offset, void *buffer, size_t buffer_length);
+ssize_t crypt_storage_wrapper_read_decrypt(struct crypt_storage_wrapper *cw,
+ off_t offset, void *buffer, size_t buffer_length);
+ssize_t crypt_storage_wrapper_decrypt(struct crypt_storage_wrapper *cw,
+ off_t offset, void *buffer, size_t buffer_length);
+
+ssize_t crypt_storage_wrapper_write(struct crypt_storage_wrapper *cw,
+ off_t offset, void *buffer, size_t buffer_length);
+ssize_t crypt_storage_wrapper_encrypt_write(struct crypt_storage_wrapper *cw,
+ off_t offset, void *buffer, size_t buffer_length);
+ssize_t crypt_storage_wrapper_encrypt(struct crypt_storage_wrapper *cw,
+ off_t offset, void *buffer, size_t buffer_length);
+
+int crypt_storage_wrapper_datasync(const struct crypt_storage_wrapper *cw);
+
+crypt_storage_wrapper_type crypt_storage_wrapper_get_type(const struct crypt_storage_wrapper *cw);
+#endif