Kernel: Move Partition code files to the Storage folder

This folder is more appropriate for these files.

Kernel/Storage/Partition/GPTPartitionTable.h

@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <AK/RefPtr.h>
+#include <AK/Types.h>
+#include <AK/Vector.h>
+#include <Kernel/Storage/Partition/DiskPartition.h>
+
+namespace Kernel {
+
+#define GPT_SIGNATURE2 0x54524150
+#define GPT_SIGNATURE 0x20494645
+#define BytesPerSector 512
+
+struct [[gnu::packed]] GPTPartitionEntry
+{
+    u32 partition_guid[4];
+    u32 unique_guid[4];
+
+    u32 first_lba[2];
+    u32 last_lba[2];
+
+    u64 attributes;
+    u8 partition_name[72];
+};
+
+struct [[gnu::packed]] GPTPartitionHeader
+{
+    u32 sig[2];
+    u32 revision;
+    u32 header_size;
+    u32 crc32_header;
+    u32 reserved;
+    u64 current_lba;
+    u64 backup_lba;
+
+    u64 first_usable_lba;
+    u64 last_usable_lba;
+
+    u64 disk_guid1[2];
+
+    u64 partition_array_start_lba;
+
+    u32 entries_count;
+    u32 partition_entry_size;
+    u32 crc32_entries_array;
+};
+
+class GPTPartitionTable {
+
+public:
+    explicit GPTPartitionTable(BlockDevice&);
+    ~GPTPartitionTable();
+
+    bool initialize();
+    RefPtr<DiskPartition> partition(unsigned index);
+
+private:
+    NonnullRefPtr<BlockDevice> m_device;
+
+    const GPTPartitionHeader& header() const;
+
+    u8 m_cached_header[512];
+};
+
+}