[pschweitzer] 73513: [UBTRFS] Import the ubtrfs DLL from the BtrFS project. CORE-12617

Author: pschweitzer
Date: Mon Jan  9 20:52:44 2017
New Revision: 73513
URL: http://svn.reactos.org/svn/reactos?rev=73513&view=rev
Log:
[UBTRFS]
Import the ubtrfs DLL from the BtrFS project.
CORE-12617
Added:
    trunk/reactos/dll/win32/ubtrfs/resource.h   (with props)
Modified:
    trunk/reactos/dll/win32/ubtrfs/CMakeLists.txt
    trunk/reactos/dll/win32/ubtrfs/ubtrfs.c
    trunk/reactos/dll/win32/ubtrfs/ubtrfs.rc
    trunk/reactos/dll/win32/ubtrfs/ubtrfs.spec
    trunk/reactos/media/doc/README.FSD
Modified: trunk/reactos/dll/win32/ubtrfs/CMakeLists.txt
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/ubtrfs/CMakeList…
==============================================================================
--- trunk/reactos/dll/win32/ubtrfs/CMakeLists.txt       [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/ubtrfs/CMakeLists.txt       [iso-8859-1] Mon Jan  9 20:52:44
2017
@@ -8,6 +8,5 @@
 add_library(ubtrfs SHARED ${SOURCE})
 set_module_type(ubtrfs nativedll)
-target_link_libraries(ubtrfs btrfslib)
 add_importlibs(ubtrfs ntdll)
 add_cd_file(TARGET ubtrfs DESTINATION reactos/system32 FOR all)
Added: trunk/reactos/dll/win32/ubtrfs/resource.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/ubtrfs/resource.…
==============================================================================
--- trunk/reactos/dll/win32/ubtrfs/resource.h   (added)
+++ trunk/reactos/dll/win32/ubtrfs/resource.h   [iso-8859-1] Mon Jan  9 20:52:44 2017
@@ -0,0 +1,14 @@
+//{{NO_DEPENDENCIES}}
+// Microsoft Visual C++ generated include file.
+// Used by ubtrfs.rc
+
+// Next default values for new objects
+//
+#ifdef APSTUDIO_INVOKED
+#ifndef APSTUDIO_READONLY_SYMBOLS
+#define _APS_NEXT_RESOURCE_VALUE        101
+#define _APS_NEXT_COMMAND_VALUE         40001
+#define _APS_NEXT_CONTROL_VALUE         1001
+#define _APS_NEXT_SYMED_VALUE           101
+#endif
+#endif
Propchange: trunk/reactos/dll/win32/ubtrfs/resource.h
------------------------------------------------------------------------------
    svn:eol-style = native
Propchange: trunk/reactos/dll/win32/ubtrfs/resource.h
------------------------------------------------------------------------------
    svn:executable = *
Modified: trunk/reactos/dll/win32/ubtrfs/ubtrfs.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/ubtrfs/ubtrfs.c?…
==============================================================================
--- trunk/reactos/dll/win32/ubtrfs/ubtrfs.c     [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/ubtrfs/ubtrfs.c     [iso-8859-1] Mon Jan  9 20:52:44 2017
@@ -1,23 +1,1463 @@
-/*
- * COPYRIGHT:       See COPYING in the top level directory
- * PROJECT:         BTRFS File System Management
- * FILE:            dll/win32/ubtrfs/ubtrfs.c
- * PURPOSE:         ubtrfs DLL initialisation
- *
- * PROGRAMMERS:     Pierre Schweitzer
- */
-
+/* Copyright (c) Mark Harmstone 2016
+ *
+ * This file is part of WinBtrfs.
+ *
+ * WinBtrfs is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public Licence as published by
+ * the Free Software Foundation, either version 3 of the Licence, or
+ * (at your option) any later version.
+ *
+ * WinBtrfs 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 Licence for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public Licence
+ * along with WinBtrfs.  If not, see <http://www.gnu.org/licenses/>. */
+
+#include <stdlib.h>
+#include <stddef.h>
+#include <time.h>
+#include <ntstatus.h>
+#define WIN32_NO_STATUS
 #include <windef.h>
-
-INT WINAPI
-DllMain(
-       IN HINSTANCE hinstDLL,
-       IN DWORD     dwReason,
-       IN LPVOID    lpvReserved)
+#include <winbase.h>
+#ifndef __REACTOS__
+#include <winternl.h>
+#include <devioctl.h>
+#include <ntdddisk.h>
+#else
+#include <ndk/iofuncs.h>
+#include <ndk/obfuncs.h>
+#include <ndk/rtlfuncs.h>
+#endif
+#include <ntddscsi.h>
+#include <ata.h>
+#include <mountmgr.h>
+#ifdef __REACTOS__
+#include "../../drivers/filesystems/btrfs/btrfs.h"
+#include "../../drivers/filesystems/btrfs/btrfsioctl.h"
+#else
+#include "../btrfs.h"
+#include "../btrfsioctl.h"
+#endif
+
+#ifndef __REACTOS__
+#define FSCTL_LOCK_VOLUME               CTL_CODE(FILE_DEVICE_FILE_SYSTEM,  6,
METHOD_BUFFERED, FILE_ANY_ACCESS)
+#define FSCTL_UNLOCK_VOLUME             CTL_CODE(FILE_DEVICE_FILE_SYSTEM,  7,
METHOD_BUFFERED, FILE_ANY_ACCESS)
+#define FSCTL_DISMOUNT_VOLUME           CTL_CODE(FILE_DEVICE_FILE_SYSTEM,  8,
METHOD_BUFFERED, FILE_ANY_ACCESS)
+#endif
+
+#ifndef __REACTOS__
+#ifdef __cplusplus
+extern "C" {
+#endif
+NTSYSCALLAPI NTSTATUS NTAPI NtFsControlFile(HANDLE FileHandle, HANDLE Event,
PIO_APC_ROUTINE ApcRoutine, PVOID ApcContext, PIO_STATUS_BLOCK IoStatusBlock, ULONG
FsControlCode, PVOID InputBuffer, ULONG InputBufferLength, PVOID OutputBuffer, ULONG
OutputBufferLength);
+
+NTSTATUS NTAPI NtWriteFile(HANDLE FileHandle, HANDLE Event, PIO_APC_ROUTINE ApcRoutine,
PVOID ApcContext, PIO_STATUS_BLOCK IoStatusBlock, PVOID Buffer,
+                           ULONG Length, PLARGE_INTEGER ByteOffset, PULONG Key);
+
+NTSTATUS NTAPI NtReadFile(HANDLE FileHandle, HANDLE Event, PIO_APC_ROUTINE ApcRoutine,
PVOID ApcContext, PIO_STATUS_BLOCK IoStatusBlock, PVOID Buffer,
+                          ULONG Length, PLARGE_INTEGER ByteOffset, PULONG Key);
+
+NTSYSAPI NTSTATUS NTAPI RtlUnicodeToUTF8N(PCHAR UTF8StringDestination, ULONG
UTF8StringMaxByteCount, PULONG UTF8StringActualByteCount,
+                                          PCWCH UnicodeStringSource, ULONG
UnicodeStringByteCount);
+#ifdef __cplusplus
+}
+#endif
+
+FORCEINLINE VOID InitializeListHead(PLIST_ENTRY ListHead) {
+    ListHead->Flink = ListHead->Blink = ListHead;
+}
+
+FORCEINLINE VOID InsertTailList(PLIST_ENTRY ListHead, PLIST_ENTRY Entry) {
+    PLIST_ENTRY Blink;
+
+    Blink = ListHead->Blink;
+    Entry->Flink = ListHead;
+    Entry->Blink = Blink;
+    Blink->Flink = Entry;
+    ListHead->Blink = Entry;
+}
+#endif
+
+#if defined(__REACTOS__) && (NTDDI_VERSION < NTDDI_WIN7)
+NTSTATUS WINAPI RtlUnicodeToUTF8N(CHAR *utf8_dest, ULONG utf8_bytes_max,
+                                  ULONG *utf8_bytes_written,
+                                  const WCHAR *uni_src, ULONG uni_bytes);
+#endif /* defined(__REACTOS__) && (NTDDI_VERSION < NTDDI_WIN7) */
+
+#ifdef __REACTOS__
+ULONG WINAPI NtGetTickCount(VOID);
+#endif
+
+typedef struct {
+    KEY key;
+    UINT16 size;
+    void* data;
+    LIST_ENTRY list_entry;
+} btrfs_item;
+
+typedef struct {
+    UINT64 offset;
+    CHUNK_ITEM* chunk_item;
+    UINT64 lastoff;
+    UINT64 used;
+    LIST_ENTRY list_entry;
+} btrfs_chunk;
+
+typedef struct {
+    UINT64 id;
+    tree_header header;
+    btrfs_chunk* c;
+    LIST_ENTRY items;
+    LIST_ENTRY list_entry;
+} btrfs_root;
+
+typedef struct {
+    DEV_ITEM dev_item;
+    UINT64 last_alloc;
+} btrfs_dev;
+
+#define keycmp(key1, key2)\
+    ((key1.obj_id < key2.obj_id) ? -1 :\
+    ((key1.obj_id > key2.obj_id) ? 1 :\
+    ((key1.obj_type < key2.obj_type) ? -1 :\
+    ((key1.obj_type > key2.obj_type) ? 1 :\
+    ((key1.offset < key2.offset) ? -1 :\
+    ((key1.offset > key2.offset) ? 1 :\
+    0))))))
+
+HMODULE module;
+
+// the following definitions come from fmifs.h in ReactOS
+
+typedef struct {
+    ULONG Lines;
+    PCHAR Output;
+} TEXTOUTPUT, *PTEXTOUTPUT;
+
+typedef enum {
+    FMIFS_UNKNOWN0,
+    FMIFS_UNKNOWN1,
+    FMIFS_UNKNOWN2,
+    FMIFS_UNKNOWN3,
+    FMIFS_UNKNOWN4,
+    FMIFS_UNKNOWN5,
+    FMIFS_UNKNOWN6,
+    FMIFS_UNKNOWN7,
+    FMIFS_FLOPPY,
+    FMIFS_UNKNOWN9,
+    FMIFS_UNKNOWN10,
+    FMIFS_REMOVABLE,
+    FMIFS_HARDDISK,
+    FMIFS_UNKNOWN13,
+    FMIFS_UNKNOWN14,
+    FMIFS_UNKNOWN15,
+    FMIFS_UNKNOWN16,
+    FMIFS_UNKNOWN17,
+    FMIFS_UNKNOWN18,
+    FMIFS_UNKNOWN19,
+    FMIFS_UNKNOWN20,
+    FMIFS_UNKNOWN21,
+    FMIFS_UNKNOWN22,
+    FMIFS_UNKNOWN23,
+} FMIFS_MEDIA_FLAG;
+
+typedef enum {
+    PROGRESS,
+    DONEWITHSTRUCTURE,
+    UNKNOWN2,
+    UNKNOWN3,
+    UNKNOWN4,
+    UNKNOWN5,
+    INSUFFICIENTRIGHTS,
+    FSNOTSUPPORTED,
+    VOLUMEINUSE,
+    UNKNOWN9,
+    UNKNOWNA,
+    DONE,
+    UNKNOWNC,
+    UNKNOWND,
+    OUTPUT,
+    STRUCTUREPROGRESS,
+    CLUSTERSIZETOOSMALL,
+} CALLBACKCOMMAND;
+
+typedef BOOLEAN (NTAPI* PFMIFSCALLBACK)(CALLBACKCOMMAND Command, ULONG SubAction, PVOID
ActionInfo);
+
+static const UINT32 crctable[] = {
+    0x00000000, 0xf26b8303, 0xe13b70f7, 0x1350f3f4, 0xc79a971f, 0x35f1141c, 0x26a1e7e8,
0xd4ca64eb,
+    0x8ad958cf, 0x78b2dbcc, 0x6be22838, 0x9989ab3b, 0x4d43cfd0, 0xbf284cd3, 0xac78bf27,
0x5e133c24,
+    0x105ec76f, 0xe235446c, 0xf165b798, 0x030e349b, 0xd7c45070, 0x25afd373, 0x36ff2087,
0xc494a384,
+    0x9a879fa0, 0x68ec1ca3, 0x7bbcef57, 0x89d76c54, 0x5d1d08bf, 0xaf768bbc, 0xbc267848,
0x4e4dfb4b,
+    0x20bd8ede, 0xd2d60ddd, 0xc186fe29, 0x33ed7d2a, 0xe72719c1, 0x154c9ac2, 0x061c6936,
0xf477ea35,
+    0xaa64d611, 0x580f5512, 0x4b5fa6e6, 0xb93425e5, 0x6dfe410e, 0x9f95c20d, 0x8cc531f9,
0x7eaeb2fa,
+    0x30e349b1, 0xc288cab2, 0xd1d83946, 0x23b3ba45, 0xf779deae, 0x05125dad, 0x1642ae59,
0xe4292d5a,
+    0xba3a117e, 0x4851927d, 0x5b016189, 0xa96ae28a, 0x7da08661, 0x8fcb0562, 0x9c9bf696,
0x6ef07595,
+    0x417b1dbc, 0xb3109ebf, 0xa0406d4b, 0x522bee48, 0x86e18aa3, 0x748a09a0, 0x67dafa54,
0x95b17957,
+    0xcba24573, 0x39c9c670, 0x2a993584, 0xd8f2b687, 0x0c38d26c, 0xfe53516f, 0xed03a29b,
0x1f682198,
+    0x5125dad3, 0xa34e59d0, 0xb01eaa24, 0x42752927, 0x96bf4dcc, 0x64d4cecf, 0x77843d3b,
0x85efbe38,
+    0xdbfc821c, 0x2997011f, 0x3ac7f2eb, 0xc8ac71e8, 0x1c661503, 0xee0d9600, 0xfd5d65f4,
0x0f36e6f7,
+    0x61c69362, 0x93ad1061, 0x80fde395, 0x72966096, 0xa65c047d, 0x5437877e, 0x4767748a,
0xb50cf789,
+    0xeb1fcbad, 0x197448ae, 0x0a24bb5a, 0xf84f3859, 0x2c855cb2, 0xdeeedfb1, 0xcdbe2c45,
0x3fd5af46,
+    0x7198540d, 0x83f3d70e, 0x90a324fa, 0x62c8a7f9, 0xb602c312, 0x44694011, 0x5739b3e5,
0xa55230e6,
+    0xfb410cc2, 0x092a8fc1, 0x1a7a7c35, 0xe811ff36, 0x3cdb9bdd, 0xceb018de, 0xdde0eb2a,
0x2f8b6829,
+    0x82f63b78, 0x709db87b, 0x63cd4b8f, 0x91a6c88c, 0x456cac67, 0xb7072f64, 0xa457dc90,
0x563c5f93,
+    0x082f63b7, 0xfa44e0b4, 0xe9141340, 0x1b7f9043, 0xcfb5f4a8, 0x3dde77ab, 0x2e8e845f,
0xdce5075c,
+    0x92a8fc17, 0x60c37f14, 0x73938ce0, 0x81f80fe3, 0x55326b08, 0xa759e80b, 0xb4091bff,
0x466298fc,
+    0x1871a4d8, 0xea1a27db, 0xf94ad42f, 0x0b21572c, 0xdfeb33c7, 0x2d80b0c4, 0x3ed04330,
0xccbbc033,
+    0xa24bb5a6, 0x502036a5, 0x4370c551, 0xb11b4652, 0x65d122b9, 0x97baa1ba, 0x84ea524e,
0x7681d14d,
+    0x2892ed69, 0xdaf96e6a, 0xc9a99d9e, 0x3bc21e9d, 0xef087a76, 0x1d63f975, 0x0e330a81,
0xfc588982,
+    0xb21572c9, 0x407ef1ca, 0x532e023e, 0xa145813d, 0x758fe5d6, 0x87e466d5, 0x94b49521,
0x66df1622,
+    0x38cc2a06, 0xcaa7a905, 0xd9f75af1, 0x2b9cd9f2, 0xff56bd19, 0x0d3d3e1a, 0x1e6dcdee,
0xec064eed,
+    0xc38d26c4, 0x31e6a5c7, 0x22b65633, 0xd0ddd530, 0x0417b1db, 0xf67c32d8, 0xe52cc12c,
0x1747422f,
+    0x49547e0b, 0xbb3ffd08, 0xa86f0efc, 0x5a048dff, 0x8ecee914, 0x7ca56a17, 0x6ff599e3,
0x9d9e1ae0,
+    0xd3d3e1ab, 0x21b862a8, 0x32e8915c, 0xc083125f, 0x144976b4, 0xe622f5b7, 0xf5720643,
0x07198540,
+    0x590ab964, 0xab613a67, 0xb831c993, 0x4a5a4a90, 0x9e902e7b, 0x6cfbad78, 0x7fab5e8c,
0x8dc0dd8f,
+    0xe330a81a, 0x115b2b19, 0x020bd8ed, 0xf0605bee, 0x24aa3f05, 0xd6c1bc06, 0xc5914ff2,
0x37faccf1,
+    0x69e9f0d5, 0x9b8273d6, 0x88d28022, 0x7ab90321, 0xae7367ca, 0x5c18e4c9, 0x4f48173d,
0xbd23943e,
+    0xf36e6f75, 0x0105ec76, 0x12551f82, 0xe03e9c81, 0x34f4f86a, 0xc69f7b69, 0xd5cf889d,
0x27a40b9e,
+    0x79b737ba, 0x8bdcb4b9, 0x988c474d, 0x6ae7c44e, 0xbe2da0a5, 0x4c4623a6, 0x5f16d052,
0xad7d5351,
+};
+
+static UINT32 calc_crc32c(UINT32 seed, UINT8* msg, ULONG msglen) {
+    UINT32 rem;
+    ULONG i;
+
+    rem = seed;
+
+    for (i = 0; i < msglen; i++) {
+        rem = crctable[(rem ^ msg[i]) & 0xff] ^ (rem >> 8);
+    }
+
+    return rem;
+}
+
+NTSTATUS WINAPI ChkdskEx(PUNICODE_STRING DriveRoot, BOOLEAN FixErrors, BOOLEAN Verbose,
BOOLEAN CheckOnlyIfDirty,
+                         BOOLEAN ScanDrive, PFMIFSCALLBACK Callback) {
+    // STUB
+
+    if (Callback) {
+        TEXTOUTPUT TextOut;
+
+        TextOut.Lines = 1;
+        TextOut.Output = "stub, not implemented";
+
+        Callback(OUTPUT, 0, &TextOut);
+    }
+
+    return STATUS_SUCCESS;
+}
+
+static btrfs_root* add_root(LIST_ENTRY* roots, UINT64 id) {
+    btrfs_root* root;
+
+#ifdef __REACTOS__
+    root = RtlAllocateHeap(RtlGetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(btrfs_root));
+#else
+    root = malloc(sizeof(btrfs_root));
+#endif
+
+    root->id = id;
+#ifndef __REACTOS__
+    RtlZeroMemory(&root->header, sizeof(tree_header));
+#endif
+    InitializeListHead(&root->items);
+    InsertTailList(roots, &root->list_entry);
+
+    return root;
+}
+
+static void free_roots(LIST_ENTRY* roots) {
+    LIST_ENTRY* le;
+
+    le = roots->Flink;
+    while (le != roots) {
+        LIST_ENTRY *le2 = le->Flink, *le3;
+        btrfs_root* r = CONTAINING_RECORD(le, btrfs_root, list_entry);
+
+        le3 = r->items.Flink;
+        while (le3 != &r->items) {
+            LIST_ENTRY* le4 = le3->Flink;
+            btrfs_item* item = CONTAINING_RECORD(le3, btrfs_item, list_entry);
+
+            if (item->data)
+#ifdef __REACTOS__
+                RtlFreeHeap(RtlGetProcessHeap(), 0, item->data);
+
+            RtlFreeHeap(RtlGetProcessHeap(), 0, item);
+#else
+                free(item->data);
+
+            free(item);
+#endif
+
+            le3 = le4;
+        }
+
+#ifdef __REACTOS__
+        RtlFreeHeap(RtlGetProcessHeap(), 0, r);
+#else
+        free(r);
+#endif
+
+        le = le2;
+    }
+}
+
+static void free_chunks(LIST_ENTRY* chunks) {
+    LIST_ENTRY* le;
+
+    le = chunks->Flink;
+    while (le != chunks) {
+        LIST_ENTRY *le2 = le->Flink;
+        btrfs_chunk* c = CONTAINING_RECORD(le, btrfs_chunk, list_entry);
+
+#ifndef __REACTOS__
+        free(c->chunk_item);
+        free(c);
+#else
+        RtlFreeHeap(RtlGetProcessHeap(), 0, c->chunk_item);
+        RtlFreeHeap(RtlGetProcessHeap(), 0, c);
+#endif
+
+        le = le2;
+    }
+}
+
+static void add_item(btrfs_root* r, UINT64 obj_id, UINT8 obj_type, UINT64 offset, void*
data, UINT16 size) {
+    LIST_ENTRY* le;
+    btrfs_item* item;
+
+#ifndef __REACTOS__
+    item = malloc(sizeof(btrfs_item));
+#else
+    item = RtlAllocateHeap(RtlGetProcessHeap(), 0, sizeof(btrfs_item));
+#endif
+
+    item->key.obj_id = obj_id;
+    item->key.obj_type = obj_type;
+    item->key.offset = offset;
+    item->size = size;
+
+    if (size == 0)
+        item->data = NULL;
+    else {
+#ifndef __REACTOS__
+        item->data = malloc(size);
+#else
+        item->data = RtlAllocateHeap(RtlGetProcessHeap(), 0, size);
+#endif
+        memcpy(item->data, data, size);
+    }
+
+    le = r->items.Flink;
+    while (le != &r->items) {
+        btrfs_item* i2 = CONTAINING_RECORD(le, btrfs_item, list_entry);
+
+        if (keycmp(item->key, i2->key) != 1) {
+            InsertTailList(le, &item->list_entry);
+            return;
+        }
+
+        le = le->Flink;
+    }
+
+    InsertTailList(&r->items, &item->list_entry);
+}
+
+static UINT64 find_chunk_offset(UINT64 size, UINT64 offset, btrfs_dev* dev, btrfs_root*
dev_root, BTRFS_UUID* chunkuuid) {
+    UINT64 off;
+    DEV_EXTENT de;
+
+    off = dev->last_alloc;
+    dev->last_alloc += size;
+
+    dev->dev_item.bytes_used += size;
+
+    de.chunktree = BTRFS_ROOT_CHUNK;
+    de.objid = 0x100;
+    de.address = offset;
+    de.length = size;
+    de.chunktree_uuid = *chunkuuid;
+
+    add_item(dev_root, dev->dev_item.dev_id, TYPE_DEV_EXTENT, off, &de,
sizeof(DEV_EXTENT));
+
+    return off;
+}
+
+static btrfs_chunk* add_chunk(LIST_ENTRY* chunks, UINT64 flags, btrfs_root* chunk_root,
btrfs_dev* dev, btrfs_root* dev_root, BTRFS_UUID* chunkuuid, UINT32 sector_size) {
+    UINT64 off, size;
+    UINT16 stripes, i;
+    btrfs_chunk* c;
+    LIST_ENTRY* le;
+    CHUNK_ITEM_STRIPE* cis;
+
+    off = 0xc00000;
+    le = chunks->Flink;
+    while (le != chunks) {
+        c = CONTAINING_RECORD(le, btrfs_chunk, list_entry);
+
+        if (c->offset + c->chunk_item->size > off)
+            off = c->offset + c->chunk_item->size;
+
+        le = le->Flink;
+    }
+
+    if (flags & BLOCK_FLAG_METADATA) {
+        if (dev->dev_item.num_bytes > 0xC80000000) // 50 GB
+            size = 0x40000000; // 1 GB
+        else
+            size = 0x10000000; // 256 MB
+    } else if (flags & BLOCK_FLAG_SYSTEM)
+        size = 0x800000;
+
+    size = min(size, dev->dev_item.num_bytes / 10); // cap at 10%
+    size &= ~(sector_size - 1);
+
+    stripes = flags & BLOCK_FLAG_DUPLICATE ? 2 : 1;
+
+    if (dev->dev_item.num_bytes - dev->dev_item.bytes_used < stripes * size) //
not enough space
+        return NULL;
+
+#ifndef __REACTOS__
+    c = malloc(sizeof(btrfs_chunk));
+#else
+    c = RtlAllocateHeap(RtlGetProcessHeap(), 0, sizeof(btrfs_chunk));
+#endif
+    c->offset = off;
+    c->lastoff = off;
+    c->used = 0;
+
+#ifndef __REACTOS__
+    c->chunk_item = malloc(sizeof(CHUNK_ITEM) + (stripes *
sizeof(CHUNK_ITEM_STRIPE)));
+#else
+    c->chunk_item = RtlAllocateHeap(RtlGetProcessHeap(), 0, sizeof(CHUNK_ITEM) +
(stripes * sizeof(CHUNK_ITEM_STRIPE)));
+#endif
+
+    c->chunk_item->size = size;
+    c->chunk_item->root_id = BTRFS_ROOT_EXTENT;
+    c->chunk_item->stripe_length = 0x10000;
+    c->chunk_item->type = flags;
+    c->chunk_item->opt_io_alignment = 0x10000;
+    c->chunk_item->opt_io_width = 0x10000;
+    c->chunk_item->sector_size = sector_size;
+    c->chunk_item->num_stripes = stripes;
+    c->chunk_item->sub_stripes = 0;
+
+    cis = (CHUNK_ITEM_STRIPE*)&c->chunk_item[1];
+
+    for (i = 0; i < stripes; i++) {
+        cis[i].dev_id = dev->dev_item.dev_id;
+        cis[i].offset = find_chunk_offset(size, c->offset, dev, dev_root, chunkuuid);
+        cis[i].dev_uuid = dev->dev_item.device_uuid;
+    }
+
+    add_item(chunk_root, 0x100, TYPE_CHUNK_ITEM, c->offset, c->chunk_item,
sizeof(CHUNK_ITEM) + (stripes * sizeof(CHUNK_ITEM_STRIPE)));
+
+    InsertTailList(chunks, &c->list_entry);
+
+    return c;
+}
+
+static BOOL superblock_collision(btrfs_chunk* c, UINT64 address) {
+    CHUNK_ITEM_STRIPE* cis = (CHUNK_ITEM_STRIPE*)&c->chunk_item[1];
+    UINT64 stripe = (address - c->offset) / c->chunk_item->stripe_length;
+    UINT16 i, j;
+
+    for (i = 0; i < c->chunk_item->num_stripes; i++) {
+        j = 0;
+        while (superblock_addrs[j] != 0) {
+            if (superblock_addrs[j] >= cis[i].offset) {
+                UINT64 stripe2 = (superblock_addrs[j] - cis[i].offset) /
c->chunk_item->stripe_length;
+
+                if (stripe2 == stripe)
+                    return TRUE;
+            }
+            j++;
+        }
+    }
+
+    return FALSE;
+}
+
+static UINT64 get_next_address(btrfs_chunk* c) {
+    UINT64 addr;
+
+    addr = c->lastoff;
+
+    while (superblock_collision(c, addr)) {
+        addr = addr - ((addr - c->offset) % c->chunk_item->stripe_length) +
c->chunk_item->stripe_length;
+
+        if (addr >= c->offset + c->chunk_item->size) // chunk has been
exhausted
+            return 0;
+    }
+
+    return addr;
+}
+
+typedef struct {
+    EXTENT_ITEM ei;
+    UINT8 type;
+    TREE_BLOCK_REF tbr;
+} EXTENT_ITEM_METADATA;
+
+static void assign_addresses(LIST_ENTRY* roots, btrfs_chunk* sys_chunk, btrfs_chunk*
metadata_chunk, UINT32 node_size,
+                             btrfs_root* root_root, btrfs_root* extent_root) {
+    LIST_ENTRY* le;
+
+    le = roots->Flink;
+    while (le != roots) {
+        btrfs_root* r = CONTAINING_RECORD(le, btrfs_root, list_entry);
+        btrfs_chunk* c = r->id == BTRFS_ROOT_CHUNK ? sys_chunk : metadata_chunk;
+        EXTENT_ITEM_METADATA eim;
+
+        r->header.address = get_next_address(c);
+        r->c = c;
+        c->lastoff = r->header.address + node_size;
+        c->used += node_size;
+
+        eim.ei.refcount = 1;
+        eim.ei.generation = 1;
+        eim.ei.flags = EXTENT_ITEM_TREE_BLOCK;
+        eim.type = TYPE_TREE_BLOCK_REF;
+        eim.tbr.offset = r->id;
+
+        // FIXME - support non-skinny EXTENT_ITEM
+        add_item(extent_root, r->header.address, TYPE_METADATA_ITEM, 0, &eim,
sizeof(EXTENT_ITEM_METADATA));
+
+        if (r->id != BTRFS_ROOT_ROOT && r->id != BTRFS_ROOT_CHUNK) {
+            ROOT_ITEM ri;
+
+            memset(&ri, 0, sizeof(ROOT_ITEM));
+
+            ri.inode.generation = 1;
+            ri.inode.st_size = 3;
+            ri.inode.st_blocks = node_size;
+            ri.inode.st_nlink = 1;
+            ri.inode.st_mode = 040755;
+            ri.generation = 1;
+            ri.objid = r->id == 5 || r->id >= 0x100 ? SUBVOL_ROOT_INODE : 0;
+            ri.block_number = r->header.address;
+            ri.bytes_used = node_size;
+            ri.num_references = 1;
+            ri.generation2 = ri.generation;
+
+            add_item(root_root, r->id, TYPE_ROOT_ITEM, 0, &ri, sizeof(ROOT_ITEM));
+        }
+
+        le = le->Flink;
+    }
+}
+
+static NTSTATUS write_data(HANDLE h, UINT64 address, btrfs_chunk* c, void* data, ULONG
size) {
+    NTSTATUS Status;
+    UINT16 i;
+    IO_STATUS_BLOCK iosb;
+    LARGE_INTEGER off;
+    CHUNK_ITEM_STRIPE* cis;
+
+    cis = (CHUNK_ITEM_STRIPE*)&c->chunk_item[1];
+
+    for (i = 0; i < c->chunk_item->num_stripes; i++) {
+        off.QuadPart = cis[i].offset + address - c->offset;
+
+        Status = NtWriteFile(h, NULL, NULL, NULL, &iosb, data, size, &off, NULL);
+        if (!NT_SUCCESS(Status))
+            return Status;
+    }
+
+    return STATUS_SUCCESS;
+}
+
+static NTSTATUS write_roots(HANDLE h, LIST_ENTRY* roots, UINT32 node_size, BTRFS_UUID*
fsuuid, BTRFS_UUID* chunkuuid) {
+    LIST_ENTRY *le, *le2;
+    NTSTATUS Status;
+    UINT8* tree;
+
+#ifndef __REACTOS__
+    tree = malloc(node_size);
+#else
+    tree = RtlAllocateHeap(RtlGetProcessHeap(), 0, node_size);
+#endif
+
+    le = roots->Flink;
+    while (le != roots) {
+        btrfs_root* r = CONTAINING_RECORD(le, btrfs_root, list_entry);
+        UINT8* dp;
+        leaf_node* ln;
+        UINT32 crc32;
+
+        memset(tree, 0, node_size);
+
+        r->header.num_items = 0;
+        r->header.fs_uuid = *fsuuid;
+        r->header.flags = HEADER_FLAG_MIXED_BACKREF | HEADER_FLAG_WRITTEN;
+        r->header.chunk_tree_uuid = *chunkuuid;
+        r->header.generation = 1;
+        r->header.tree_id = r->id;
+
+        ln = (leaf_node*)(tree + sizeof(tree_header));
+
+        dp = tree + node_size;
+
+        le2 = r->items.Flink;
+        while (le2 != &r->items) {
+            btrfs_item* item = CONTAINING_RECORD(le2, btrfs_item, list_entry);
+
+            ln->key = item->key;
+            ln->size = item->size;
+
+            if (item->size > 0) {
+                dp -= item->size;
+                memcpy(dp, item->data, item->size);
+
+                ln->offset = dp - tree - sizeof(tree_header);
+            } else
+                ln->offset = 0;
+
+            ln = &ln[1];
+
+            r->header.num_items++;
+
+            le2 = le2->Flink;
+        }
+
+        memcpy(tree, &r->header, sizeof(tree_header));
+
+        crc32 = ~calc_crc32c(0xffffffff, (UINT8*)&((tree_header*)tree)->fs_uuid,
node_size - sizeof(((tree_header*)tree)->csum));
+        memcpy(tree, &crc32, sizeof(UINT32));
+
+        Status = write_data(h, r->header.address, r->c, tree, node_size);
+        if (!NT_SUCCESS(Status)) {
+#ifndef __REACTOS__
+            free(tree);
+#else
+            RtlFreeHeap(RtlGetProcessHeap(), 0, tree);
+#endif
+            return Status;
+        }
+
+        le = le->Flink;
+    }
+
+#ifndef __REACTOS__
+    free(tree);
+#else
+    RtlFreeHeap(RtlGetProcessHeap(), 0, tree);
+#endif
+
+    return STATUS_SUCCESS;
+}
+
+#ifndef __REACTOS__
+static void get_uuid(BTRFS_UUID* uuid) {
+#else
+static void get_uuid(BTRFS_UUID* uuid, ULONG* seed) {
+#endif
+    UINT8 i;
+
+    for (i = 0; i < 16; i+=2) {
+#ifndef __REACTOS__
+        ULONG r = rand();
+#else
+        ULONG r = RtlRandom(seed);
+#endif
+
+        uuid->uuid[i] = (r & 0xff00) >> 8;
+        uuid->uuid[i+1] = r & 0xff;
+    }
+}
+
+#ifndef __REACTOS__
+static void init_device(btrfs_dev* dev, UINT64 id, UINT64 size, BTRFS_UUID* fsuuid,
UINT32 sector_size) {
+#else
+static void init_device(btrfs_dev* dev, UINT64 id, UINT64 size, BTRFS_UUID* fsuuid,
UINT32 sector_size, ULONG* seed) {
+#endif
+    dev->dev_item.dev_id = id;
+    dev->dev_item.num_bytes = size;
+    dev->dev_item.bytes_used = 0;
+    dev->dev_item.optimal_io_align = sector_size;
+    dev->dev_item.optimal_io_width = sector_size;
+    dev->dev_item.minimal_io_size = sector_size;
+    dev->dev_item.type = 0;
+    dev->dev_item.generation = 0;
+    dev->dev_item.start_offset = 0;
+    dev->dev_item.dev_group = 0;
+    dev->dev_item.seek_speed = 0;
+    dev->dev_item.bandwidth = 0;
+#ifndef __REACTOS__
+    get_uuid(&dev->dev_item.device_uuid);
+#else
+    get_uuid(&dev->dev_item.device_uuid, seed);
+#endif
+    dev->dev_item.fs_uuid = *fsuuid;
+
+    dev->last_alloc = 0x100000; // skip first megabyte
+}
+
+#ifdef __REACTOS__
+NTSTATUS NTAPI RtlUnicodeToUTF8N(CHAR *utf8_dest, ULONG utf8_bytes_max,
+                                 ULONG *utf8_bytes_written,
+                                 const WCHAR *uni_src, ULONG uni_bytes)
 {
-       UNREFERENCED_PARAMETER(hinstDLL);
-       UNREFERENCED_PARAMETER(dwReason);
-       UNREFERENCED_PARAMETER(lpvReserved);
-
-       return TRUE;
-}
+    NTSTATUS status;
+    ULONG i;
+    ULONG written;
+    ULONG ch;
+    BYTE utf8_ch[4];
+    ULONG utf8_ch_len;
+
+    if (!uni_src)
+        return STATUS_INVALID_PARAMETER_4;
+    if (!utf8_bytes_written)
+        return STATUS_INVALID_PARAMETER;
+    if (utf8_dest && uni_bytes % sizeof(WCHAR))
+        return STATUS_INVALID_PARAMETER_5;
+
+    written = 0;
+    status = STATUS_SUCCESS;
+
+    for (i = 0; i < uni_bytes / sizeof(WCHAR); i++)
+    {
+        /* decode UTF-16 into ch */
+        ch = uni_src[i];
+        if (ch >= 0xdc00 && ch <= 0xdfff)
+        {
+            ch = 0xfffd;
+            status = STATUS_SOME_NOT_MAPPED;
+        }
+        else if (ch >= 0xd800 && ch <= 0xdbff)
+        {
+            if (i + 1 < uni_bytes / sizeof(WCHAR))
+            {
+                ch -= 0xd800;
+                ch <<= 10;
+                if (uni_src[i + 1] >= 0xdc00 && uni_src[i + 1] <= 0xdfff)
+                {
+                    ch |= uni_src[i + 1] - 0xdc00;
+                    ch += 0x010000;
+                    i++;
+                }
+                else
+                {
+                    ch = 0xfffd;
+                    status = STATUS_SOME_NOT_MAPPED;
+                }
+            }
+            else
+            {
+                ch = 0xfffd;
+                status = STATUS_SOME_NOT_MAPPED;
+            }
+        }
+
+        /* encode ch as UTF-8 */
+        ASSERT(ch <= 0x10ffff);
+        if (ch < 0x80)
+        {
+            utf8_ch[0] = ch & 0x7f;
+            utf8_ch_len = 1;
+        }
+        else if (ch < 0x800)
+        {
+            utf8_ch[0] = 0xc0 | (ch >>  6 & 0x1f);
+            utf8_ch[1] = 0x80 | (ch >>  0 & 0x3f);
+            utf8_ch_len = 2;
+        }
+        else if (ch < 0x10000)
+        {
+            utf8_ch[0] = 0xe0 | (ch >> 12 & 0x0f);
+            utf8_ch[1] = 0x80 | (ch >>  6 & 0x3f);
+            utf8_ch[2] = 0x80 | (ch >>  0 & 0x3f);
+            utf8_ch_len = 3;
+        }
+        else if (ch < 0x200000)
+        {
+            utf8_ch[0] = 0xf0 | (ch >> 18 & 0x07);
+            utf8_ch[1] = 0x80 | (ch >> 12 & 0x3f);
+            utf8_ch[2] = 0x80 | (ch >>  6 & 0x3f);
+            utf8_ch[3] = 0x80 | (ch >>  0 & 0x3f);
+            utf8_ch_len = 4;
+        }
+
+        if (!utf8_dest)
+        {
+            written += utf8_ch_len;
+            continue;
+        }
+
+        if (utf8_bytes_max >= utf8_ch_len)
+        {
+            memcpy(utf8_dest, utf8_ch, utf8_ch_len);
+            utf8_dest += utf8_ch_len;
+            utf8_bytes_max -= utf8_ch_len;
+            written += utf8_ch_len;
+        }
+        else
+        {
+            utf8_bytes_max = 0;
+            status = STATUS_BUFFER_TOO_SMALL;
+        }
+    }
+
+    *utf8_bytes_written = written;
+    return status;
+}
+#endif
+
+static NTSTATUS write_superblocks(HANDLE h, btrfs_dev* dev, btrfs_root* chunk_root,
btrfs_root* root_root, btrfs_root* extent_root,
+                                  btrfs_chunk* sys_chunk, UINT32 node_size, BTRFS_UUID*
fsuuid, UINT32 sector_size, PUNICODE_STRING label) {
+    NTSTATUS Status;
+    IO_STATUS_BLOCK iosb;
+    ULONG sblen;
+    int i;
+    UINT32 crc32;
+    superblock* sb;
+    KEY* key;
+    UINT64 bytes_used;
+    LIST_ENTRY* le;
+
+    sblen = sizeof(sb);
+    if (sblen & (sector_size - 1))
+        sblen = (sblen & sector_size) + sector_size;
+
+    bytes_used = 0;
+
+    le = extent_root->items.Flink;
+    while (le != &extent_root->items) {
+        btrfs_item* item = CONTAINING_RECORD(le, btrfs_item, list_entry);
+
+        if (item->key.obj_type == TYPE_EXTENT_ITEM)
+            bytes_used += item->key.offset;
+        else if (item->key.obj_type == TYPE_METADATA_ITEM)
+            bytes_used += node_size;
+
+        le = le->Flink;
+    }
+
+#ifndef __REACTOS__
+    sb = malloc(sblen);
+    memset(sb, 0, sblen);
+#else
+    sb = RtlAllocateHeap(RtlGetProcessHeap(), HEAP_ZERO_MEMORY, sblen);
+#endif
+
+    sb->uuid = *fsuuid;
+    sb->flags = 1;
+    sb->magic = BTRFS_MAGIC;
+    sb->generation = 1;
+    sb->root_tree_addr = root_root->header.address;
+    sb->chunk_tree_addr = chunk_root->header.address;
+    sb->total_bytes = dev->dev_item.num_bytes;
+    sb->bytes_used = bytes_used;
+    sb->root_dir_objectid = 6;
+    sb->num_devices = 1;
+    sb->sector_size = sector_size;
+    sb->node_size = node_size;
+    sb->leaf_size = node_size;
+    sb->stripe_size = sector_size;
+    sb->n = sizeof(KEY) + sizeof(CHUNK_ITEM) +
(sys_chunk->chunk_item->num_stripes * sizeof(CHUNK_ITEM_STRIPE));
+    sb->chunk_root_generation = 1;
+    sb->incompat_flags = BTRFS_INCOMPAT_FLAGS_MIXED_BACKREF |
BTRFS_INCOMPAT_FLAGS_EXTENDED_IREF | BTRFS_INCOMPAT_FLAGS_SKINNY_METADATA;
+    memcpy(&sb->dev_item, &dev->dev_item, sizeof(DEV_ITEM));
+
+    if (label->Length > 0) {
+        int i;
+        ULONG utf8len;
+
+        for (i = 0; i < label->Length / sizeof(WCHAR); i++) {
+            if (label->Buffer[i] == '/' || label->Buffer[i] ==
'\\') {
+#ifndef __REACTOS__
+                free(sb);
+#else
+                RtlFreeHeap(RtlGetProcessHeap(), 0, sb);
+#endif
+                return STATUS_INVALID_VOLUME_LABEL;
+            }
+        }
+
+        Status = RtlUnicodeToUTF8N(NULL, 0, &utf8len, label->Buffer,
label->Length);
+        if (!NT_SUCCESS(Status)) {
+#ifndef __REACTOS__
+            free(sb);
+#else
+            RtlFreeHeap(RtlGetProcessHeap(), 0, sb);
+#endif
+            return Status;
+        }
+
+        if (utf8len > MAX_LABEL_SIZE) {
+#ifndef __REACTOS__
+            free(sb);
+#else
+            RtlFreeHeap(RtlGetProcessHeap(), 0, sb);
+#endif
+            return STATUS_INVALID_VOLUME_LABEL;
+        }
+
+        Status = RtlUnicodeToUTF8N((PCHAR)&sb->label, MAX_LABEL_SIZE,
&utf8len, label->Buffer, label->Length);
+        if (!NT_SUCCESS(Status)) {
+#ifndef __REACTOS__
+            free(sb);
+#else
+            RtlFreeHeap(RtlGetProcessHeap(), 0, sb);
+#endif
+            return Status;
+        }
+    }
+    sb->cache_generation = 0xffffffffffffffff;
+
+    key = (KEY*)sb->sys_chunk_array;
+    key->obj_id = 0x100;
+    key->obj_type = TYPE_CHUNK_ITEM;
+    key->offset = sys_chunk->offset;
+    memcpy(&key[1], sys_chunk->chunk_item, sizeof(CHUNK_ITEM) +
(sys_chunk->chunk_item->num_stripes * sizeof(CHUNK_ITEM_STRIPE)));
+
+    i = 0;
+    while (superblock_addrs[i] != 0) {
+        LARGE_INTEGER off;
+
+        if (superblock_addrs[i] > dev->dev_item.num_bytes)
+            break;
+
+        sb->sb_phys_addr = superblock_addrs[i];
+
+        crc32 = ~calc_crc32c(0xffffffff, (UINT8*)&sb->uuid,
(ULONG)sizeof(superblock) - sizeof(sb->checksum));
+        memcpy(&sb->checksum, &crc32, sizeof(UINT32));
+
+        off.QuadPart = superblock_addrs[i];
+
+        Status = NtWriteFile(h, NULL, NULL, NULL, &iosb, sb, sblen, &off, NULL);
+        if (!NT_SUCCESS(Status)) {
+#ifndef __REACTOS__
+            free(sb);
+#else
+            RtlFreeHeap(RtlGetProcessHeap(), 0, sb);
+#endif
+            return Status;
+        }
+
+        i++;
+    }
+
+#ifndef __REACTOS__
+    free(sb);
+#else
+    RtlFreeHeap(RtlGetProcessHeap(), 0, sb);
+#endif
+
+    return STATUS_SUCCESS;
+}
+
+static __inline void win_time_to_unix(LARGE_INTEGER t, BTRFS_TIME* out) {
+    ULONGLONG l = t.QuadPart - 116444736000000000;
+
+    out->seconds = l / 10000000;
+    out->nanoseconds = (l % 10000000) * 100;
+}
+
+#ifdef __REACTOS__
+VOID
+WINAPI
+GetSystemTimeAsFileTime(OUT PFILETIME lpFileTime)
+{
+    LARGE_INTEGER SystemTime;
+
+    do
+    {
+        SystemTime.HighPart = SharedUserData->SystemTime.High1Time;
+        SystemTime.LowPart = SharedUserData->SystemTime.LowPart;
+    }
+    while (SystemTime.HighPart != SharedUserData->SystemTime.High2Time);
+
+    lpFileTime->dwLowDateTime = SystemTime.LowPart;
+    lpFileTime->dwHighDateTime = SystemTime.HighPart;
+}
+#endif
+
+static void init_fs_tree(btrfs_root* r, UINT32 node_size) {
+    INODE_ITEM ii;
+    INODE_REF* ir;
+#ifndef __REACTOS__
+    SYSTEMTIME systime;
+#endif
+    FILETIME filetime;
+    LARGE_INTEGER time;
+
+    memset(&ii, 0, sizeof(INODE_ITEM));
+
+    ii.generation = 1;
+    ii.st_blocks = node_size;
+    ii.st_nlink = 1;
+    ii.st_mode = 040755;
+
+#ifndef __REACTOS__
+    GetSystemTime(&systime);
+    SystemTimeToFileTime(&systime, &filetime);
+#else
+    GetSystemTimeAsFileTime(&filetime);
+#endif
+    time.LowPart = filetime.dwLowDateTime;
+    time.HighPart = filetime.dwHighDateTime;
+
+    win_time_to_unix(time, &ii.st_atime);
+    ii.st_ctime = ii.st_mtime = ii.st_atime;
+
+    add_item(r, SUBVOL_ROOT_INODE, TYPE_INODE_ITEM, 0, &ii, sizeof(INODE_ITEM));
+
+#ifndef __REACTOS__
+    ir = malloc(sizeof(INODE_REF) - 1 + 2);
+#else
+    ir = RtlAllocateHeap(RtlGetProcessHeap(), 0, sizeof(INODE_REF) - 1 + 2);
+#endif
+
+    ir->index = 0;
+    ir->n = 2;
+    ir->name[0] = '.';
+    ir->name[1] = '.';
+
+    add_item(r, SUBVOL_ROOT_INODE, TYPE_INODE_REF, SUBVOL_ROOT_INODE, ir,
sizeof(INODE_REF) - 1 + ir->n);
+
+#ifndef __REACTOS__
+    free(ir);
+#else
+    RtlFreeHeap(RtlGetProcessHeap(), 0, ir);
+#endif
+}
+
+static void add_block_group_items(LIST_ENTRY* chunks, btrfs_root* extent_root) {
+    LIST_ENTRY* le;
+
+    le = chunks->Flink;
+    while (le != chunks) {
+        btrfs_chunk* c = CONTAINING_RECORD(le, btrfs_chunk, list_entry);
+        BLOCK_GROUP_ITEM bgi;
+
+        bgi.used = c->used;
+        bgi.chunk_tree = 0x100;
+        bgi.flags = c->chunk_item->type;
+        add_item(extent_root, c->offset, TYPE_BLOCK_GROUP_ITEM,
c->chunk_item->size, &bgi, sizeof(BLOCK_GROUP_ITEM));
+
+        le = le->Flink;
+    }
+}
+
+static NTSTATUS clear_first_megabyte(HANDLE h) {
+    NTSTATUS Status;
+    IO_STATUS_BLOCK iosb;
+    LARGE_INTEGER zero;
+    UINT8* mb;
+
+#ifndef __REACTOS__
+    mb = malloc(0x100000);
+#else
+    mb = RtlAllocateHeap(RtlGetProcessHeap(), 0, 0x100000);
+#endif
+    memset(mb, 0, 0x100000);
+
+    zero.QuadPart = 0;
+
+    Status = NtWriteFile(h, NULL, NULL, NULL, &iosb, mb, 0x100000, &zero, NULL);
+
+#ifndef __REACTOS__
+    free(mb);
+#else
+    RtlFreeHeap(RtlGetProcessHeap(), 0, mb);
+#endif
+
+    return Status;
+}
+
+static BOOL is_ssd(HANDLE h) {
+    ULONG aptelen;
+    ATA_PASS_THROUGH_EX* apte;
+    IO_STATUS_BLOCK iosb;
+    NTSTATUS Status;
+    IDENTIFY_DEVICE_DATA* idd;
+
+    aptelen = sizeof(ATA_PASS_THROUGH_EX) + 512;
+#ifndef __REACTOS__
+    apte = malloc(aptelen);
+
+    RtlZeroMemory(apte, aptelen);
+#else
+    apte = RtlAllocateHeap(RtlGetProcessHeap(), HEAP_ZERO_MEMORY, aptelen);
+#endif
+
+    apte->Length = sizeof(ATA_PASS_THROUGH_EX);
+    apte->AtaFlags = ATA_FLAGS_DATA_IN;
+    apte->DataTransferLength = aptelen - sizeof(ATA_PASS_THROUGH_EX);
+    apte->TimeOutValue = 3;
+    apte->DataBufferOffset = apte->Length;
+    apte->CurrentTaskFile[6] = IDE_COMMAND_IDENTIFY;
+
+    Status = NtDeviceIoControlFile(h, NULL, NULL, NULL, &iosb,
IOCTL_ATA_PASS_THROUGH, apte, aptelen, apte, aptelen);
+
+    if (NT_SUCCESS(Status)) {
+        idd = (IDENTIFY_DEVICE_DATA*)((UINT8*)apte + sizeof(ATA_PASS_THROUGH_EX));
+
+        if (idd->NominalMediaRotationRate == 1)
+            return TRUE;
+    }
+
+    return FALSE;
+}
+
+static NTSTATUS write_btrfs(HANDLE h, UINT64 size, PUNICODE_STRING label, UINT32
sector_size) {
+    NTSTATUS Status;
+    UINT32 node_size;
+    LIST_ENTRY roots, chunks;
+    btrfs_root *root_root, *chunk_root, *extent_root, *dev_root, *fs_root, *reloc_root;
+    btrfs_chunk *sys_chunk, *metadata_chunk;
+    btrfs_dev dev;
+    BTRFS_UUID fsuuid, chunkuuid;
+    BOOL ssd;
+#ifdef __REACTOS__
+    ULONG seed;
+#endif
+
+#ifndef __REACTOS__
+    srand(time(0));
+    get_uuid(&fsuuid);
+    get_uuid(&chunkuuid);
+#else
+    seed = NtGetTickCount();
+    get_uuid(&fsuuid, &seed);
+    get_uuid(&chunkuuid, &seed);
+#endif
+
+    InitializeListHead(&roots);
+    InitializeListHead(&chunks);
+
+    root_root = add_root(&roots, BTRFS_ROOT_ROOT);
+    chunk_root = add_root(&roots, BTRFS_ROOT_CHUNK);
+    extent_root = add_root(&roots, BTRFS_ROOT_EXTENT);
+    dev_root = add_root(&roots, BTRFS_ROOT_DEVTREE);
+    add_root(&roots, BTRFS_ROOT_CHECKSUM);
+    fs_root = add_root(&roots, BTRFS_ROOT_FSTREE);
+    reloc_root = add_root(&roots, BTRFS_ROOT_DATA_RELOC);
+
+#ifndef __REACTOS__
+    init_device(&dev, 1, size, &fsuuid, sector_size);
+#else
+    init_device(&dev, 1, size, &fsuuid, sector_size, &seed);
+#endif
+
+    ssd = is_ssd(h);
+
+    sys_chunk = add_chunk(&chunks, BLOCK_FLAG_SYSTEM | (ssd ? 0 :
BLOCK_FLAG_DUPLICATE), chunk_root, &dev, dev_root, &chunkuuid, sector_size);
+    if (!sys_chunk)
+        return STATUS_INTERNAL_ERROR;
+
+    metadata_chunk = add_chunk(&chunks, BLOCK_FLAG_METADATA | (ssd ? 0 :
BLOCK_FLAG_DUPLICATE), chunk_root, &dev, dev_root, &chunkuuid, sector_size);
+    if (!metadata_chunk)
+        return STATUS_INTERNAL_ERROR;
+
+    node_size = 0x4000;
+    assign_addresses(&roots, sys_chunk, metadata_chunk, node_size, root_root,
extent_root);
+
+    add_item(chunk_root, 1, TYPE_DEV_ITEM, dev.dev_item.dev_id, &dev.dev_item,
sizeof(DEV_ITEM));
+
+    init_fs_tree(fs_root, node_size);
+    init_fs_tree(reloc_root, node_size);
+
+    add_block_group_items(&chunks, extent_root);
+
+    Status = write_roots(h, &roots, node_size, &fsuuid, &chunkuuid);
+    if (!NT_SUCCESS(Status))
+        return Status;
+
+    Status = clear_first_megabyte(h);
+    if (!NT_SUCCESS(Status))
+        return Status;
+
+    Status = write_superblocks(h, &dev, chunk_root, root_root, extent_root,
sys_chunk, node_size, &fsuuid, sector_size, label);
+    if (!NT_SUCCESS(Status))
+        return Status;
+
+    free_roots(&roots);
+    free_chunks(&chunks);
+
+    return STATUS_SUCCESS;
+}
+
+static BOOL look_for_device(btrfs_filesystem* bfs, BTRFS_UUID* devuuid) {
+    UINT32 i;
+    btrfs_filesystem_device* dev;
+
+    for (i = 0; i < bfs->num_devices; i++) {
+        if (i == 0)
+            dev = &bfs->device;
+        else
+            dev = (btrfs_filesystem_device*)((UINT8*)dev +
offsetof(btrfs_filesystem_device, name[0]) + dev->name_length);
+
+        if (RtlCompareMemory(&dev->uuid, devuuid, sizeof(BTRFS_UUID)) ==
sizeof(BTRFS_UUID))
+            return TRUE;
+    }
+
+    return FALSE;
+}
+
+static BOOL is_mounted_multi_device(HANDLE h, UINT32 sector_size) {
+    NTSTATUS Status;
+    superblock* sb;
+    ULONG sblen;
+    IO_STATUS_BLOCK iosb;
+    LARGE_INTEGER off;
+    BTRFS_UUID fsuuid, devuuid;
+    UINT32 crc32;
+    UNICODE_STRING us;
+    OBJECT_ATTRIBUTES atts;
+    HANDLE h2;
+    btrfs_filesystem *bfs = NULL, *bfs2;
+    ULONG bfssize;
+    BOOL ret = FALSE;
+
+    static WCHAR btrfs[] = L"\\Btrfs";
+
+    sblen = sizeof(sb);
+    if (sblen & (sector_size - 1))
+        sblen = (sblen & sector_size) + sector_size;
+
+#ifndef __REACTOS__
+    sb = malloc(sblen);
+#else
+    sb = RtlAllocateHeap(RtlGetProcessHeap(), 0, sblen);
+#endif
+
+    off.QuadPart = superblock_addrs[0];
+
+    Status = NtReadFile(h, NULL, NULL, NULL, &iosb, sb, sblen, &off, NULL);
+    if (!NT_SUCCESS(Status)) {
+#ifndef __REACTOS__
+        free(sb);
+#else
+        RtlFreeHeap(RtlGetProcessHeap(), 0, sb);
+#endif
+        return FALSE;
+    }
+
+    if (sb->magic != BTRFS_MAGIC) {
+#ifndef __REACTOS__
+        free(sb);
+#else
+        RtlFreeHeap(RtlGetProcessHeap(), 0, sb);
+#endif
+        return FALSE;
+    }
+
+    crc32 = ~calc_crc32c(0xffffffff, (UINT8*)&sb->uuid, (ULONG)sizeof(superblock)
- sizeof(sb->checksum));
+    if (crc32 != *((UINT32*)sb)) {
+#ifndef __REACTOS__
+        free(sb);
+#else
+        RtlFreeHeap(RtlGetProcessHeap(), 0, sb);
+#endif
+        return FALSE;
+    }
+
+    fsuuid = sb->uuid;
+    devuuid = sb->dev_item.device_uuid;
+
+#ifndef __REACTOS__
+    free(sb);
+#else
+    RtlFreeHeap(RtlGetProcessHeap(), 0, sb);
+#endif
+
+    us.Length = us.MaximumLength = wcslen(btrfs) * sizeof(WCHAR);
+    us.Buffer = btrfs;
+
+    InitializeObjectAttributes(&atts, &us, 0, NULL, NULL);
+
+    Status = NtOpenFile(&h2, SYNCHRONIZE | FILE_READ_ATTRIBUTES, &atts,
&iosb,
+                        FILE_SHARE_READ | FILE_SHARE_WRITE, FILE_SYNCHRONOUS_IO_ALERT);
+    if (!NT_SUCCESS(Status)) // not a problem, it usually just means the driver isn't
loaded
+        return FALSE;
+
+    bfssize = 0;
+
+    do {
+        bfssize += 1024;
+
+#ifndef __REACTOS__
+        if (bfs) free(bfs);
+        bfs = malloc(bfssize);
+#else
+        if (bfs) RtlFreeHeap(RtlGetProcessHeap(), 0, bfs);
+        bfs = RtlAllocateHeap(RtlGetProcessHeap(), 0, bfssize);
+#endif
+
+        Status = NtDeviceIoControlFile(h2, NULL, NULL, NULL, &iosb,
IOCTL_BTRFS_QUERY_FILESYSTEMS, NULL, 0, bfs, bfssize);
+        if (!NT_SUCCESS(Status) && Status != STATUS_BUFFER_OVERFLOW) {
+            NtClose(h2);
+            return FALSE;
+        }
+    } while (Status == STATUS_BUFFER_OVERFLOW);
+
+    if (!NT_SUCCESS(Status))
+        goto end;
+
+    if (bfs->num_devices != 0) {
+        bfs2 = bfs;
+        while (TRUE) {
+            if (RtlCompareMemory(&bfs2->uuid, &fsuuid, sizeof(BTRFS_UUID)) ==
sizeof(BTRFS_UUID)) {
+                if (bfs2->num_devices == 1)
+                    ret = FALSE;
+                else
+                    ret = look_for_device(bfs2, &devuuid);
+
+                goto end;
+            }
+
+            if (bfs2->next_entry == 0)
+                break;
+            else
+                bfs2 = (btrfs_filesystem*)((UINT8*)bfs2 + bfs2->next_entry);
+        }
+    }
+
+end:
+    NtClose(h2);
+
+    if (bfs)
+#ifndef __REACTOS__
+        free(bfs);
+#else
+        RtlFreeHeap(RtlGetProcessHeap(), 0, bfs);
+#endif
+
+    return ret;
+}
+
+static void add_drive_letter(HANDLE h) {
+    NTSTATUS Status;
+    IO_STATUS_BLOCK iosb;
+    MOUNTDEV_NAME mdn, *mdn2;
+    UNICODE_STRING us;
+    OBJECT_ATTRIBUTES attr;
+    HANDLE mountmgr;
+    MOUNTMGR_DRIVE_LETTER_INFORMATION mdli;
+
+    Status = NtDeviceIoControlFile(h, NULL, NULL, NULL, &iosb,
IOCTL_MOUNTDEV_QUERY_DEVICE_NAME, NULL, 0, &mdn, sizeof(mdn));
+    if (!NT_SUCCESS(Status) && Status != STATUS_BUFFER_OVERFLOW)
+        return;
+
+#ifndef __REACTOS__
+    mdn2 = malloc(offsetof(MOUNTDEV_NAME, Name[0]) + mdn.NameLength);
+#else
+    mdn2 = RtlAllocateHeap(RtlGetProcessHeap(), 0, offsetof(MOUNTDEV_NAME, Name[0]) +
mdn.NameLength);
+#endif
+
+    Status = NtDeviceIoControlFile(h, NULL, NULL, NULL, &iosb,
IOCTL_MOUNTDEV_QUERY_DEVICE_NAME, NULL, 0, mdn2, offsetof(MOUNTDEV_NAME, Name[0]) +
mdn.NameLength);
+    if (!NT_SUCCESS(Status))
+        goto end;
+
+    RtlInitUnicodeString(&us, MOUNTMGR_DEVICE_NAME);
+    InitializeObjectAttributes(&attr, &us, 0, NULL, NULL);
+
+    Status = NtOpenFile(&mountmgr, FILE_GENERIC_READ | FILE_GENERIC_WRITE, &attr,
&iosb,
+                        FILE_SHARE_READ, FILE_SYNCHRONOUS_IO_ALERT);
+
+    if (!NT_SUCCESS(Status))
+        goto end;
+
+    // MOUNTDEV_NAME is identical to MOUNTMGR_TARGET_NAME
+    Status = NtDeviceIoControlFile(mountmgr, NULL, NULL, NULL, &iosb,
IOCTL_MOUNTMGR_VOLUME_ARRIVAL_NOTIFICATION,
+                                   mdn2, offsetof(MOUNTDEV_NAME, Name[0]) +
mdn.NameLength, NULL, 0);
+    if (!NT_SUCCESS(Status))
+        goto end2;
+
+    // MOUNTDEV_NAME is identical to MOUNTMGR_DRIVE_LETTER_TARGET
+    Status = NtDeviceIoControlFile(mountmgr, NULL, NULL, NULL, &iosb,
IOCTL_MOUNTMGR_NEXT_DRIVE_LETTER,
+                                   mdn2, offsetof(MOUNTDEV_NAME, Name[0]) +
mdn.NameLength, &mdli, sizeof(mdli));
+    if (!NT_SUCCESS(Status))
+        goto end2;
+
+end2:
+    NtClose(mountmgr);
+
+end:
+#ifndef __REACTOS__
+    free(mdn2);
+#else
+    RtlFreeHeap(RtlGetProcessHeap(), 0, mdn2);
+#endif
+}
+
+NTSTATUS NTAPI FormatEx(PUNICODE_STRING DriveRoot, FMIFS_MEDIA_FLAG MediaFlag,
PUNICODE_STRING Label,
+                        BOOLEAN QuickFormat, ULONG ClusterSize, PFMIFSCALLBACK Callback)
+{
+    NTSTATUS Status;
+    HANDLE h;
+    OBJECT_ATTRIBUTES attr;
+    IO_STATUS_BLOCK iosb;
+    GET_LENGTH_INFORMATION gli;
+    DISK_GEOMETRY_EX dgex;
+    UINT32 sector_size;
+
+    InitializeObjectAttributes(&attr, DriveRoot, 0, NULL, NULL);
+
+    Status = NtOpenFile(&h, FILE_GENERIC_READ | FILE_GENERIC_WRITE, &attr,
&iosb,
+                        FILE_SHARE_READ, FILE_SYNCHRONOUS_IO_ALERT);
+
+    if (!NT_SUCCESS(Status))
+        return Status;
+
+    Status = NtDeviceIoControlFile(h, NULL, NULL, NULL, &iosb,
IOCTL_DISK_GET_LENGTH_INFO, NULL, 0, &gli, sizeof(gli));
+    if (!NT_SUCCESS(Status)) {
+        NtClose(h);
+        return Status;
+    }
+
+    Status = NtDeviceIoControlFile(h, NULL, NULL, NULL, &iosb,
IOCTL_DISK_GET_DRIVE_GEOMETRY_EX, NULL, 0, &dgex, sizeof(dgex));
+    if (!NT_SUCCESS(Status)) {
+        NtClose(h);
+        return Status;
+    }
+
+    sector_size = dgex.Geometry.BytesPerSector;
+
+    if (sector_size == 0x200 || sector_size == 0)
+        sector_size = 0x1000;
+
+    if (Callback) {
+        ULONG pc = 0;
+        Callback(PROGRESS, 0, (PVOID)&pc);
+    }
+
+    NtFsControlFile(h, NULL, NULL, NULL, &iosb, FSCTL_LOCK_VOLUME, NULL, 0, NULL, 0);
+
+    if (is_mounted_multi_device(h, sector_size)) {
+        Status = STATUS_ACCESS_DENIED;
+        goto end;
+    }
+
+    Status = write_btrfs(h, gli.Length.QuadPart, Label, sector_size);
+
+    NtFsControlFile(h, NULL, NULL, NULL, &iosb, FSCTL_DISMOUNT_VOLUME, NULL, 0, NULL,
0);
+
+end:
+    NtFsControlFile(h, NULL, NULL, NULL, &iosb, FSCTL_UNLOCK_VOLUME, NULL, 0, NULL,
0);
+
+    if (NT_SUCCESS(Status))
+        add_drive_letter(h);
+
+    NtClose(h);
+
+    if (Callback) {
+        BOOL success = NT_SUCCESS(Status);
+        Callback(DONE, 0, (PVOID)&success);
+    }
+
+    return Status;
+}
+
+BOOL APIENTRY DllMain(HANDLE hModule, DWORD dwReason, void* lpReserved) {
+    if (dwReason == DLL_PROCESS_ATTACH)
+        module = (HMODULE)hModule;
+
+    return TRUE;
+}
Modified: trunk/reactos/dll/win32/ubtrfs/ubtrfs.rc
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/ubtrfs/ubtrfs.rc…
==============================================================================
--- trunk/reactos/dll/win32/ubtrfs/ubtrfs.rc    [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/ubtrfs/ubtrfs.rc    [iso-8859-1] Mon Jan  9 20:52:44 2017
@@ -1,5 +1,101 @@
-#define REACTOS_VERSION_DLL
-#define REACTOS_STR_FILE_DESCRIPTION  "BTRFS File System Management"
-#define REACTOS_STR_INTERNAL_NAME     "ubtrfs"
-#define REACTOS_STR_ORIGINAL_FILENAME "ubtrfs.dll"
-#include <reactos/version.rc>
+// Microsoft Visual C++ generated resource script.
+//
+#include "resource.h"
+
+#define APSTUDIO_READONLY_SYMBOLS
+/////////////////////////////////////////////////////////////////////////////
+//
+// Generated from the TEXTINCLUDE 2 resource.
+//
+#include "afxres.h"
+
+/////////////////////////////////////////////////////////////////////////////
+#undef APSTUDIO_READONLY_SYMBOLS
+
+/////////////////////////////////////////////////////////////////////////////
+// English (U.K.) resources
+
+#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENG)
+#ifdef _WIN32
+LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_UK
+#pragma code_page(1252)
+#endif //_WIN32
+
+#ifdef APSTUDIO_INVOKED
+/////////////////////////////////////////////////////////////////////////////
+//
+// TEXTINCLUDE
+//
+
+1 TEXTINCLUDE
+BEGIN
+    "resource.h\0"
+END
+
+2 TEXTINCLUDE
+BEGIN
+    "#include ""afxres.h""\r\n"
+    "\0"
+END
+
+3 TEXTINCLUDE
+BEGIN
+    "\r\n"
+    "\0"
+END
+
+#endif    // APSTUDIO_INVOKED
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Version
+//
+
+VS_VERSION_INFO VERSIONINFO
+ FILEVERSION 1,0,0,1
+ PRODUCTVERSION 1,0,0,1
+ FILEFLAGSMASK 0x17L
+#ifdef _DEBUG
+ FILEFLAGS 0x1L
+#else
+ FILEFLAGS 0x0L
+#endif
+ FILEOS 0x4L
+ FILETYPE 0x2L
+ FILESUBTYPE 0x0L
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "080904b0"
+        BEGIN
+            VALUE "FileDescription", "Btrfs utility DLL"
+            VALUE "FileVersion", "0.8"
+            VALUE "InternalName", "ubtrfs"
+            VALUE "LegalCopyright", "Copyright (c) Mark Harmstone
2016"
+            VALUE "OriginalFilename", "ubtrfs.dll"
+            VALUE "ProductName", "WinBtrfs"
+            VALUE "ProductVersion", "0.8"
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x809, 1200
+    END
+END
+
+#endif    // English (U.K.) resources
+/////////////////////////////////////////////////////////////////////////////
+
+
+
+#ifndef APSTUDIO_INVOKED
+/////////////////////////////////////////////////////////////////////////////
+//
+// Generated from the TEXTINCLUDE 3 resource.
+//
+
+
+/////////////////////////////////////////////////////////////////////////////
+#endif    // not APSTUDIO_INVOKED
+
Modified: trunk/reactos/dll/win32/ubtrfs/ubtrfs.spec
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/ubtrfs/ubtrfs.sp…
==============================================================================
--- trunk/reactos/dll/win32/ubtrfs/ubtrfs.spec  [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/ubtrfs/ubtrfs.spec  [iso-8859-1] Mon Jan  9 20:52:44 2017
@@ -1,2 +1,2 @@
-@ stdcall ChkdskEx(ptr long long long long ptr) BtrfsChkdsk
-@ stdcall FormatEx(ptr long ptr long long ptr) BtrfsFormat
+@ stdcall ChkdskEx(ptr long long long long ptr)
+@ stdcall FormatEx(ptr long ptr long long ptr)
Modified: trunk/reactos/media/doc/README.FSD
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/media/doc/README.FSD?rev=7…
==============================================================================
--- trunk/reactos/media/doc/README.FSD  [iso-8859-1] (original)
+++ trunk/reactos/media/doc/README.FSD  [iso-8859-1] Mon Jan  9 20:52:44 2017
@@ -5,6 +5,7 @@
 reactos/drivers/filesystems/btrfs           # Synced to 0.8
 reactos/dll/shellext/shellbtrfs             # Synced to 0.7
+reactos/dll/win32/ubtrfs                    # Synced to 0.8
 The following FSD are shared with: http://www.ext2fsd.com/