move space maps to their own sub directory

2013-01-10 21:36:38 +00:00
parent 6a4facf03b
commit 326fd3408b
15 changed files with 31 additions and 29 deletions
--- a/persistent-data/space-maps/disk_structures.h
+++ b/persistent-data/space-maps/disk_structures.h
@ -0,0 +1,116 @@
+// Copyright (C) 2011 Red Hat, Inc. All rights reserved.
+//
+// This file is part of the thin-provisioning-tools source.
+//
+// thin-provisioning-tools is free software: you can redistribute it
+// and/or modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation, either version 3 of
+// the License, or (at your option) any later version.
+//
+// thin-provisioning-tools 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with thin-provisioning-tools.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+#ifndef SPACE_MAP_DISK_STRUCTURES_H
+#define SPACE_MAP_DISK_STRUCTURES_H
+
+#include "persistent-data/endian_utils.h"
+#include "persistent-data/btree.h"
+
+//----------------------------------------------------------------
+
+namespace persistent_data {
+	using namespace base;
+
+	namespace sm_disk_detail {
+		struct index_entry_disk {
+			__le64 blocknr_;
+			__le32 nr_free_;
+			__le32 none_free_before_;
+		} __attribute__ ((packed));
+
+		struct index_entry {
+			uint64_t blocknr_;
+			uint32_t nr_free_;
+			uint32_t none_free_before_;
+		};
+
+		struct index_entry_traits {
+			typedef index_entry_disk disk_type;
+			typedef index_entry value_type;
+			typedef NoOpRefCounter<index_entry> ref_counter;
+
+			static void unpack(disk_type const &disk, value_type &value) {
+				value.blocknr_ = to_cpu<uint64_t>(disk.blocknr_);
+				value.nr_free_ = to_cpu<uint32_t>(disk.nr_free_);
+				value.none_free_before_ = to_cpu<uint32_t>(disk.none_free_before_);
+			}
+
+			static void pack(value_type const &value, disk_type &disk) {
+				disk.blocknr_ = to_disk<__le64>(value.blocknr_);
+				disk.nr_free_ = to_disk<__le32>(value.nr_free_);
+				disk.none_free_before_ = to_disk<__le32>(value.none_free_before_);
+			}
+		};
+
+		unsigned const MAX_METADATA_BITMAPS = 255;
+		unsigned const ENTRIES_PER_BYTE = 4;
+
+		struct metadata_index {
+			__le32 csum_;
+			__le32 padding_;
+			__le64 blocknr_;
+
+			struct index_entry_disk index[MAX_METADATA_BITMAPS];
+		} __attribute__ ((packed));
+
+		struct sm_root_disk {
+			__le64 nr_blocks_;
+			__le64 nr_allocated_;
+			__le64 bitmap_root_;
+			__le64 ref_count_root_;
+		} __attribute__ ((packed));
+
+		struct sm_root {
+			uint64_t nr_blocks_;
+			uint64_t nr_allocated_;
+			uint64_t bitmap_root_;
+			uint64_t ref_count_root_;
+		};
+
+		struct sm_root_traits {
+			typedef sm_root_disk disk_type;
+			typedef sm_root value_type;
+			typedef NoOpRefCounter<sm_root> ref_counter;
+
+			static void unpack(disk_type const &disk, value_type &value) {
+				value.nr_blocks_ = to_cpu<uint64_t>(disk.nr_blocks_);
+				value.nr_allocated_ = to_cpu<uint64_t>(disk.nr_allocated_);
+				value.bitmap_root_ = to_cpu<uint64_t>(disk.bitmap_root_);
+				value.ref_count_root_ = to_cpu<uint64_t>(disk.ref_count_root_);
+			}
+
+			static void pack(value_type const &value, disk_type &disk) {
+				disk.nr_blocks_ = to_disk<__le64>(value.nr_blocks_);
+				disk.nr_allocated_ = to_disk<__le64>(value.nr_allocated_);
+				disk.bitmap_root_ = to_disk<__le64>(value.bitmap_root_);
+				disk.ref_count_root_ = to_disk<__le64>(value.ref_count_root_);
+			}
+		};
+
+		struct bitmap_header {
+			__le32 csum;
+			__le32 not_used;
+			__le64 blocknr;
+		} __attribute__ ((packed));
+	}
+}
+
+//----------------------------------------------------------------
+
+#endif