Add stand-alone dm-integrity support

This adds support for dm integrity targets and an associated
/etc/integritytab file which is required as the dm integrity device
super block doesn't include all of the required metadata to bring up
the device correctly.  See integritytab man page for details.

1 files changed, 19 insertions, 0 deletions

diff --git a/src/integritysetup/integrity-util.h b/src/integritysetup/integrity-util.h
new file mode 100644
index 0000000000..b27975c7db
--- /dev/null
+++ b/src/integritysetup/integrity-util.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <stdint.h>
+
+#include "cryptsetup-util.h"
+#include "time-util.h"
+
+
+int parse_integrity_options(
+                const char *options,
+                uint32_t *ret_activate_flags,
+                int *ret_percent,
+                usec_t *ret_commit_time,
+                char **ret_data_device,
+                char **ret_integrity_alg);
+
+#define DM_HMAC_256 "hmac(sha256)"
+#define DM_MAX_KEY_SIZE 4096            /* Maximum size of key allowed for dm-integrity */