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[RFC 3/8] Gluks: Add the basic framework
From: |
Hyman Huang |
Subject: |
[RFC 3/8] Gluks: Add the basic framework |
Date: |
Tue, 5 Dec 2023 00:06:20 +0800 |
Gluks would be a built-in format in the QEMU block layer.
Signed-off-by: Hyman Huang <yong.huang@smartx.com>
---
block/generic-luks.c | 81 ++++++++++++++++++++++++++++++++++++++++++++
block/generic-luks.h | 26 ++++++++++++++
block/meson.build | 1 +
3 files changed, 108 insertions(+)
create mode 100644 block/generic-luks.c
create mode 100644 block/generic-luks.h
diff --git a/block/generic-luks.c b/block/generic-luks.c
new file mode 100644
index 0000000000..f23e202991
--- /dev/null
+++ b/block/generic-luks.c
@@ -0,0 +1,81 @@
+/*
+ * QEMU block driver for the generic luks encryption
+ *
+ * Copyright (c) 2024 SmartX Inc
+ *
+ * Author: Hyman Huang <yong.huang@smartx.com>
+ *
+ * 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/>.
+ *
+ */
+
+#include "qemu/osdep.h"
+
+#include "block/block_int.h"
+#include "block/crypto.h"
+#include "crypto/block.h"
+
+#include "generic-luks.h"
+
+/* BDRVGLUKSState holds the state of one generic LUKS instance */
+typedef struct BDRVGLUKSState {
+ BlockCrypto crypto;
+ BdrvChild *header; /* LUKS header node */
+ uint64_t header_size; /* In bytes */
+} BDRVGLUKSState;
+
+static int gluks_open(BlockDriverState *bs, QDict *options, int flags,
+ Error **errp)
+{
+ return 0;
+}
+
+static int coroutine_fn GRAPH_UNLOCKED
+gluks_co_create_opts(BlockDriver *drv, const char *filename,
+ QemuOpts *opts, Error **errp)
+{
+ return 0;
+}
+
+static void
+gluks_child_perms(BlockDriverState *bs, BdrvChild *c,
+ const BdrvChildRole role,
+ BlockReopenQueue *reopen_queue,
+ uint64_t perm, uint64_t shared,
+ uint64_t *nperm, uint64_t *nshared)
+{
+
+}
+
+static int64_t coroutine_fn GRAPH_RDLOCK
+gluks_co_getlength(BlockDriverState *bs)
+{
+ return 0;
+}
+
+static BlockDriver bdrv_generic_luks = {
+ .format_name = "gluks",
+ .instance_size = sizeof(BDRVGLUKSState),
+ .bdrv_open = gluks_open,
+ .bdrv_co_create_opts = gluks_co_create_opts,
+ .bdrv_child_perm = gluks_child_perms,
+ .bdrv_co_getlength = gluks_co_getlength,
+};
+
+static void block_generic_luks_init(void)
+{
+ bdrv_register(&bdrv_generic_luks);
+}
+
+block_init(block_generic_luks_init);
diff --git a/block/generic-luks.h b/block/generic-luks.h
new file mode 100644
index 0000000000..2aae866fa4
--- /dev/null
+++ b/block/generic-luks.h
@@ -0,0 +1,26 @@
+/*
+ * QEMU block driver for the generic luks encryption
+ *
+ * Copyright (c) 2024 SmartX Inc
+ *
+ * Author: Hyman Huang <yong.huang@smartx.com>
+ *
+ * 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 GENERIC_LUKS_H
+#define GENERIC_LUKS_H
+
+#endif /* GENERIC_LUKS_H */
diff --git a/block/meson.build b/block/meson.build
index 59ff6d380c..74f2da7bed 100644
--- a/block/meson.build
+++ b/block/meson.build
@@ -39,6 +39,7 @@ block_ss.add(files(
'throttle.c',
'throttle-groups.c',
'write-threshold.c',
+ 'generic-luks.c',
), zstd, zlib, gnutls)
system_ss.add(when: 'CONFIG_TCG', if_true: files('blkreplay.c'))
--
2.39.1
- [RFC 0/8] Support generic Luks encryption, Hyman Huang, 2023/12/04
- [RFC 1/8] crypto: Export util functions and structures, Hyman Huang, 2023/12/04
- [RFC 2/8] crypto: Introduce payload offset set function, Hyman Huang, 2023/12/04
- [RFC 3/8] Gluks: Add the basic framework,
Hyman Huang <=
- [RFC 4/8] Gluks: Introduce Gluks options, Hyman Huang, 2023/12/04
- [RFC 6/8] crypto: Provide the Luks crypto driver to Gluks, Hyman Huang, 2023/12/04
- [RFC 7/8] Gluks: Implement the fundamental block layer driver hooks, Hyman Huang, 2023/12/04
- [RFC 5/8] qapi: Introduce Gluks types to qapi, Hyman Huang, 2023/12/04
- [RFC 8/8] block: Support Gluks format image creation using qemu-img, Hyman Huang, 2023/12/04
- Re: [RFC 0/8] Support generic Luks encryption, Daniel P . Berrangé, 2023/12/04