Adding upstream version 2:2.3.7.upstream/2%2.3.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 75 insertions, 0 deletions

diff --git a/lib/utils_storage_wrappers.h b/lib/utils_storage_wrappers.h
new file mode 100644
index 0000000..ec55ec2
--- /dev/null
+++ b/lib/utils_storage_wrappers.h
@@ -0,0 +1,75 @@
+/*
+ * Generic wrapper for storage functions
+ * (experimental only)
+ *
+ * Copyright (C) 2018-2021, 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