dll/shellext/shellbtrfs/contextmenu.cpp

   1 /* Copyright (c) Mark Harmstone 2016-17
   2  *
   3  * This file is part of WinBtrfs.
   4  *
   5  * WinBtrfs is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU Lesser General Public Licence as published by
   7  * the Free Software Foundation, either version 3 of the Licence, or
   8  * (at your option) any later version.
   9  *
  10  * WinBtrfs is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU Lesser General Public Licence for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public Licence
  16  * along with WinBtrfs.  If not, see <http://www.gnu.org/licenses/>. */
  17
  18 #include "shellext.h"
  19 #ifndef __REACTOS__
  20 #include <windows.h>
  21 #include <strsafe.h>
  22 #include <stddef.h>
  23 #include <winternl.h>
  24 #else
  25 #define WIN32_NO_STATUS
  26 #include <windef.h>
  27 #include <winbase.h>
  28 #include <strsafe.h>
  29 #include <shellapi.h>
  30 #include <winioctl.h>
  31 #include <ndk/iofuncs.h>
  32 #undef DeleteFile
  33 #endif
  34 #include <wincodec.h>
  35 #include <sstream>
  36 #include <iostream>
  37
  38 #define NO_SHLWAPI_STRFCNS
  39 #include <shlwapi.h>
  40
  41 #include "contextmenu.h"
  42 #include "resource.h"
  43 #ifndef __REACTOS__
  44 #include "../btrfsioctl.h"
  45 #else
  46 #include "btrfsioctl.h"
  47 #endif
  48
  49 #define NEW_SUBVOL_VERBA "newsubvol"
  50 #define NEW_SUBVOL_VERBW L"newsubvol"
  51 #define SNAPSHOT_VERBA "snapshot"
  52 #define SNAPSHOT_VERBW L"snapshot"
  53 #define REFLINK_VERBA "reflink"
  54 #define REFLINK_VERBW L"reflink"
  55 #define RECV_VERBA "recvsubvol"
  56 #define RECV_VERBW L"recvsubvol"
  57 #define SEND_VERBA "sendsubvol"
  58 #define SEND_VERBW L"sendsubvol"
  59
  60 typedef struct {
  61     ULONG  ReparseTag;
  62     USHORT ReparseDataLength;
  63     USHORT Reserved;
  64 } reparse_header;
  65
  66 static void path_remove_file(wstring& path);
  67
  68 // FIXME - don't assume subvol's top inode is 0x100
  69
  70 HRESULT __stdcall BtrfsContextMenu::QueryInterface(REFIID riid, void **ppObj) {
  71     if (riid == IID_IUnknown || riid == IID_IContextMenu) {
  72         *ppObj = static_cast<IContextMenu*>(this);
  73         AddRef();
  74         return S_OK;
  75     } else if (riid == IID_IShellExtInit) {
  76         *ppObj = static_cast<IShellExtInit*>(this);
  77         AddRef();
  78         return S_OK;
  79     }
  80
  81     *ppObj = nullptr;
  82     return E_NOINTERFACE;
  83 }
  84
  85 HRESULT __stdcall BtrfsContextMenu::Initialize(PCIDLIST_ABSOLUTE pidlFolder, IDataObject* pdtobj, HKEY hkeyProgID) {
  86     IO_STATUS_BLOCK iosb;
  87     btrfs_get_file_ids bgfi;
  88     NTSTATUS Status;
  89
  90     if (!pidlFolder) {
  91         FORMATETC format = { CF_HDROP, nullptr, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
  92         UINT num_files, i;
  93         WCHAR fn[MAX_PATH];
  94         HDROP hdrop;
  95
  96         if (!pdtobj)
  97             return E_FAIL;
  98
  99         stgm.tymed = TYMED_HGLOBAL;
 100
 101         if (FAILED(pdtobj->GetData(&format, &stgm)))
 102             return E_INVALIDARG;
 103
 104         stgm_set = true;
 105
 106         hdrop = (HDROP)GlobalLock(stgm.hGlobal);
 107
 108         if (!hdrop) {
 109             ReleaseStgMedium(&stgm);
 110             stgm_set = false;
 111             return E_INVALIDARG;
 112         }
 113
 114         num_files = DragQueryFileW((HDROP)stgm.hGlobal, 0xFFFFFFFF, nullptr, 0);
 115
 116         for (i = 0; i < num_files; i++) {
 117             if (DragQueryFileW((HDROP)stgm.hGlobal, i, fn, sizeof(fn) / sizeof(WCHAR))) {
 118                 win_handle h = CreateFileW(fn, FILE_TRAVERSE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
 119
 120                 if (h != INVALID_HANDLE_VALUE) {
 121                     Status = NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_FILE_IDS, nullptr, 0, &bgfi, sizeof(btrfs_get_file_ids));
 122
 123                     if (NT_SUCCESS(Status) && bgfi.inode == 0x100 && !bgfi.top) {
 124                         wstring parpath;
 125
 126                         {
 127                             win_handle h2;
 128
 129                             parpath = fn;
 130                             path_remove_file(parpath);
 131
 132                             h2 = CreateFileW(parpath.c_str(), FILE_ADD_SUBDIRECTORY, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, nullptr,
 133                                             OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
 134
 135                             if (h2 != INVALID_HANDLE_VALUE)
 136                                 allow_snapshot = true;
 137                         }
 138
 139                         ignore = false;
 140                         bg = false;
 141
 142                         GlobalUnlock(hdrop);
 143                         return S_OK;
 144                     }
 145                 }
 146             }
 147         }
 148
 149         GlobalUnlock(hdrop);
 150
 151         return S_OK;
 152     }
 153
 154     {
 155         WCHAR pathbuf[MAX_PATH];
 156
 157         if (!SHGetPathFromIDListW(pidlFolder, pathbuf))
 158             return E_FAIL;
 159
 160         path = pathbuf;
 161     }
 162
 163     {
 164         // check we have permissions to create new subdirectory
 165
 166         win_handle h = CreateFileW(path.c_str(), FILE_ADD_SUBDIRECTORY, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
 167
 168         if (h == INVALID_HANDLE_VALUE)
 169             return E_FAIL;
 170
 171         // check is Btrfs volume
 172
 173         Status = NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_FILE_IDS, nullptr, 0, &bgfi, sizeof(btrfs_get_file_ids));
 174
 175         if (!NT_SUCCESS(Status))
 176             return E_FAIL;
 177     }
 178
 179     ignore = false;
 180     bg = true;
 181
 182     return S_OK;
 183 }
 184
 185 static bool get_volume_path_parent(const WCHAR* fn, WCHAR* volpath, ULONG volpathlen) {
 186     WCHAR *f, *p;
 187     bool b;
 188
 189     f = PathFindFileNameW(fn);
 190
 191     if (f == fn)
 192         return GetVolumePathNameW(fn, volpath, volpathlen);
 193
 194     p = (WCHAR*)malloc((f - fn + 1) * sizeof(WCHAR));
 195     memcpy(p, fn, (f - fn) * sizeof(WCHAR));
 196     p[f - fn] = 0;
 197
 198     b = GetVolumePathNameW(p, volpath, volpathlen);
 199
 200     free(p);
 201
 202     return b;
 203 }
 204
 205 static bool show_reflink_paste(const wstring& path) {
 206     HDROP hdrop;
 207     HANDLE lh;
 208     ULONG num_files;
 209     WCHAR fn[MAX_PATH], volpath1[255], volpath2[255];
 210
 211     if (!IsClipboardFormatAvailable(CF_HDROP))
 212         return false;
 213
 214     if (!GetVolumePathNameW(path.c_str(), volpath1, sizeof(volpath1) / sizeof(WCHAR)))
 215         return false;
 216
 217     if (!OpenClipboard(nullptr))
 218         return false;
 219
 220     hdrop = (HDROP)GetClipboardData(CF_HDROP);
 221
 222     if (!hdrop) {
 223         CloseClipboard();
 224         return false;
 225     }
 226
 227     lh = GlobalLock(hdrop);
 228
 229     if (!lh) {
 230         CloseClipboard();
 231         return false;
 232     }
 233
 234     num_files = DragQueryFileW(hdrop, 0xFFFFFFFF, nullptr, 0);
 235
 236     if (num_files == 0) {
 237         GlobalUnlock(lh);
 238         CloseClipboard();
 239         return false;
 240     }
 241
 242     if (!DragQueryFileW(hdrop, 0, fn, sizeof(fn) / sizeof(WCHAR))) {
 243         GlobalUnlock(lh);
 244         CloseClipboard();
 245         return false;
 246     }
 247
 248     if (!get_volume_path_parent(fn, volpath2, sizeof(volpath2) / sizeof(WCHAR))) {
 249         GlobalUnlock(lh);
 250         CloseClipboard();
 251         return false;
 252     }
 253
 254     GlobalUnlock(lh);
 255
 256     CloseClipboard();
 257
 258     return !wcscmp(volpath1, volpath2);
 259 }
 260
 261 // The code for putting an icon against a menu item comes from:
 262 // http://web.archive.org/web/20070208005514/http://shellrevealed.com/blogs/shellblog/archive/2007/02/06/Vista-Style-Menus_2C00_-Part-1-_2D00_-Adding-icons-to-standard-menus.aspx
 263
 264 static void InitBitmapInfo(BITMAPINFO* pbmi, ULONG cbInfo, LONG cx, LONG cy, WORD bpp) {
 265     ZeroMemory(pbmi, cbInfo);
 266     pbmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
 267     pbmi->bmiHeader.biPlanes = 1;
 268     pbmi->bmiHeader.biCompression = BI_RGB;
 269
 270     pbmi->bmiHeader.biWidth = cx;
 271     pbmi->bmiHeader.biHeight = cy;
 272     pbmi->bmiHeader.biBitCount = bpp;
 273 }
 274
 275 static HRESULT Create32BitHBITMAP(HDC hdc, const SIZE *psize, void **ppvBits, HBITMAP* phBmp) {
 276     BITMAPINFO bmi;
 277     HDC hdcUsed;
 278
 279     *phBmp = nullptr;
 280
 281     InitBitmapInfo(&bmi, sizeof(bmi), psize->cx, psize->cy, 32);
 282
 283     hdcUsed = hdc ? hdc : GetDC(nullptr);
 284
 285     if (hdcUsed) {
 286         *phBmp = CreateDIBSection(hdcUsed, &bmi, DIB_RGB_COLORS, ppvBits, nullptr, 0);
 287         if (hdc != hdcUsed)
 288             ReleaseDC(nullptr, hdcUsed);
 289     }
 290
 291     return !*phBmp ? E_OUTOFMEMORY : S_OK;
 292 }
 293
 294 void BtrfsContextMenu::get_uac_icon() {
 295     IWICImagingFactory* factory = nullptr;
 296     IWICBitmap* bitmap;
 297     HRESULT hr;
 298
 299 #ifdef __REACTOS__
 300     hr = CoCreateInstance(CLSID_WICImagingFactory, nullptr, CLSCTX_INPROC_SERVER, IID_IWICImagingFactory, (void **)&factory);
 301 #else
 302     hr = CoCreateInstance(CLSID_WICImagingFactory, nullptr, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&factory));
 303 #endif
 304
 305     if (SUCCEEDED(hr)) {
 306         HANDLE icon;
 307
 308         // We can't use IDI_SHIELD, as that will only give us the full-size icon
 309         icon = LoadImageW(GetModuleHandleW(L"user32.dll"), MAKEINTRESOURCEW(106)/* UAC shield */, IMAGE_ICON,
 310                           GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON), LR_DEFAULTCOLOR);
 311
 312         hr = factory->CreateBitmapFromHICON((HICON)icon, &bitmap);
 313         if (SUCCEEDED(hr)) {
 314             UINT cx, cy;
 315
 316             hr = bitmap->GetSize(&cx, &cy);
 317             if (SUCCEEDED(hr)) {
 318                 SIZE sz;
 319                 BYTE* buf;
 320
 321                 sz.cx = (int)cx;
 322                 sz.cy = -(int)cy;
 323
 324                 hr = Create32BitHBITMAP(nullptr, &sz, (void**)&buf, &uacicon);
 325                 if (SUCCEEDED(hr)) {
 326                     UINT stride = cx * sizeof(DWORD);
 327                     UINT buflen = cy * stride;
 328                     bitmap->CopyPixels(nullptr, stride, buflen, buf);
 329                 }
 330             }
 331
 332             bitmap->Release();
 333         }
 334
 335         factory->Release();
 336     }
 337 }
 338
 339 HRESULT __stdcall BtrfsContextMenu::QueryContextMenu(HMENU hmenu, UINT indexMenu, UINT idCmdFirst, UINT idCmdLast, UINT uFlags) {
 340     wstring str;
 341     ULONG entries = 0;
 342
 343     if (ignore)
 344         return E_INVALIDARG;
 345
 346     if (uFlags & CMF_DEFAULTONLY)
 347         return S_OK;
 348
 349     if (!bg) {
 350         if (allow_snapshot) {
 351             if (load_string(module, IDS_CREATE_SNAPSHOT, str) == 0)
 352                 return E_FAIL;
 353
 354             if (!InsertMenuW(hmenu, indexMenu, MF_BYPOSITION, idCmdFirst, str.c_str()))
 355                 return E_FAIL;
 356
 357             entries = 1;
 358         }
 359
 360         if (idCmdFirst + entries <= idCmdLast) {
 361             MENUITEMINFOW mii;
 362
 363             if (load_string(module, IDS_SEND_SUBVOL, str) == 0)
 364                 return E_FAIL;
 365
 366             if (!uacicon)
 367                 get_uac_icon();
 368
 369             memset(&mii, 0, sizeof(MENUITEMINFOW));
 370             mii.cbSize = sizeof(MENUITEMINFOW);
 371             mii.fMask = MIIM_STRING | MIIM_ID | MIIM_BITMAP;
 372             mii.dwTypeData = (WCHAR*)str.c_str();
 373             mii.wID = idCmdFirst + entries;
 374             mii.hbmpItem = uacicon;
 375
 376             if (!InsertMenuItemW(hmenu, indexMenu + entries, true, &mii))
 377                 return E_FAIL;
 378
 379             entries++;
 380         }
 381     } else {
 382         if (load_string(module, IDS_NEW_SUBVOL, str) == 0)
 383             return E_FAIL;
 384
 385         if (!InsertMenuW(hmenu, indexMenu, MF_BYPOSITION, idCmdFirst, str.c_str()))
 386             return E_FAIL;
 387
 388         entries = 1;
 389
 390         if (idCmdFirst + 1 <= idCmdLast) {
 391             MENUITEMINFOW mii;
 392
 393             if (load_string(module, IDS_RECV_SUBVOL, str) == 0)
 394                 return E_FAIL;
 395
 396             if (!uacicon)
 397                 get_uac_icon();
 398
 399             memset(&mii, 0, sizeof(MENUITEMINFOW));
 400             mii.cbSize = sizeof(MENUITEMINFOW);
 401             mii.fMask = MIIM_STRING | MIIM_ID | MIIM_BITMAP;
 402             mii.dwTypeData = (WCHAR*)str.c_str();
 403             mii.wID = idCmdFirst + 1;
 404             mii.hbmpItem = uacicon;
 405
 406             if (!InsertMenuItemW(hmenu, indexMenu + 1, true, &mii))
 407                 return E_FAIL;
 408
 409             entries++;
 410         }
 411
 412         if (idCmdFirst + 2 <= idCmdLast && show_reflink_paste(path)) {
 413             if (load_string(module, IDS_REFLINK_PASTE, str) == 0)
 414                 return E_FAIL;
 415
 416             if (!InsertMenuW(hmenu, indexMenu + 2, MF_BYPOSITION, idCmdFirst + 2, str.c_str()))
 417                 return E_FAIL;
 418
 419             entries++;
 420         }
 421     }
 422
 423     return MAKE_HRESULT(SEVERITY_SUCCESS, 0, entries);
 424 }
 425
 426 static void path_remove_file(wstring& path) {
 427     size_t bs = path.rfind(L"\\");
 428
 429     if (bs == string::npos)
 430         return;
 431
 432     if (bs == path.find(L"\\")) { // only one backslash
 433         path = path.substr(0, bs + 1);
 434         return;
 435     }
 436
 437     path = path.substr(0, bs);
 438 }
 439
 440 static void path_strip_path(wstring& path) {
 441     size_t bs = path.rfind(L"\\");
 442
 443     if (bs == string::npos) {
 444         path = L"";
 445         return;
 446     }
 447
 448     path = path.substr(bs + 1);
 449 }
 450
 451 static void create_snapshot(HWND hwnd, const wstring& fn) {
 452     win_handle h;
 453     NTSTATUS Status;
 454     IO_STATUS_BLOCK iosb;
 455     btrfs_get_file_ids bgfi;
 456
 457     h = CreateFileW(fn.c_str(), FILE_TRAVERSE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
 458
 459     if (h != INVALID_HANDLE_VALUE) {
 460         Status = NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_FILE_IDS, nullptr, 0, &bgfi, sizeof(btrfs_get_file_ids));
 461
 462         if (NT_SUCCESS(Status) && bgfi.inode == 0x100 && !bgfi.top) {
 463             wstring subvolname, parpath, searchpath, temp1, name, nameorig;
 464             win_handle h2;
 465             btrfs_create_snapshot* bcs;
 466             ULONG namelen;
 467             WIN32_FIND_DATAW wfd;
 468             SYSTEMTIME time;
 469
 470             parpath = fn;
 471             path_remove_file(parpath);
 472
 473             subvolname = fn;
 474             path_strip_path(subvolname);
 475
 476             h2 = CreateFileW(parpath.c_str(), FILE_ADD_SUBDIRECTORY, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
 477
 478             if (h2 == INVALID_HANDLE_VALUE)
 479                 throw last_error(GetLastError());
 480
 481             if (!load_string(module, IDS_SNAPSHOT_FILENAME, temp1))
 482                 throw last_error(GetLastError());
 483
 484             GetLocalTime(&time);
 485
 486             wstring_sprintf(name, temp1, subvolname.c_str(), time.wYear, time.wMonth, time.wDay);
 487             nameorig = name;
 488
 489             searchpath = parpath + L"\\" + name;
 490
 491             fff_handle fff = FindFirstFileW(searchpath.c_str(), &wfd);
 492
 493             if (fff != INVALID_HANDLE_VALUE) {
 494                 ULONG num = 2;
 495
 496                 do {
 497 #ifndef __REACTOS__
 498                     name = nameorig + L" (" + to_wstring(num) + L")";
 499 #else
 500                     {
 501                         WCHAR buffer[32];
 502
 503                         swprintf(buffer, L"%d", num);
 504                         name = nameorig + L" (" + buffer + L")";
 505                     }
 506 #endif
 507                     searchpath = parpath + L"\\" + name;
 508
 509                     fff = FindFirstFileW(searchpath.c_str(), &wfd);
 510                     num++;
 511                 } while (fff != INVALID_HANDLE_VALUE);
 512             }
 513
 514             namelen = name.length() * sizeof(WCHAR);
 515
 516             bcs = (btrfs_create_snapshot*)malloc(sizeof(btrfs_create_snapshot) - 1 + namelen);
 517             bcs->readonly = false;
 518             bcs->posix = false;
 519             bcs->subvol = h;
 520             bcs->namelen = (uint16_t)namelen;
 521             memcpy(bcs->name, name.c_str(), namelen);
 522
 523             Status = NtFsControlFile(h2, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_CREATE_SNAPSHOT, bcs, sizeof(btrfs_create_snapshot) - 1 + namelen, nullptr, 0);
 524
 525             if (!NT_SUCCESS(Status))
 526                 throw ntstatus_error(Status);
 527         }
 528     } else
 529         throw last_error(GetLastError());
 530 }
 531
 532 static uint64_t __inline sector_align(uint64_t n, uint64_t a) {
 533     if (n & (a - 1))
 534         n = (n + a) & ~(a - 1);
 535
 536     return n;
 537 }
 538
 539 void BtrfsContextMenu::reflink_copy(HWND hwnd, const WCHAR* fn, const WCHAR* dir) {
 540     win_handle source, dest;
 541     WCHAR* name, volpath1[255], volpath2[255];
 542     wstring dirw, newpath;
 543     FILE_BASIC_INFO fbi;
 544     FILETIME atime, mtime;
 545     btrfs_inode_info bii;
 546     btrfs_set_inode_info bsii;
 547     ULONG bytesret;
 548     NTSTATUS Status;
 549     IO_STATUS_BLOCK iosb;
 550     btrfs_set_xattr bsxa;
 551
 552     // Thanks to 0xbadfca11, whose version of reflink for Windows provided a few pointers on what
 553     // to do here - https://github.com/0xbadfca11/reflink
 554
 555     name = PathFindFileNameW(fn);
 556
 557     dirw = dir;
 558
 559     if (dir[0] != 0 && dir[wcslen(dir) - 1] != '\\')
 560         dirw += L"\\";
 561
 562     newpath = dirw;
 563     newpath += name;
 564
 565     if (!get_volume_path_parent(fn, volpath1, sizeof(volpath1) / sizeof(WCHAR)))
 566         throw last_error(GetLastError());
 567
 568     if (!GetVolumePathNameW(dir, volpath2, sizeof(volpath2) / sizeof(WCHAR)))
 569         throw last_error(GetLastError());
 570
 571     if (wcscmp(volpath1, volpath2)) // different filesystems
 572         throw string_error(IDS_CANT_REFLINK_DIFFERENT_FS);
 573
 574     source = CreateFileW(fn, GENERIC_READ | FILE_TRAVERSE, FILE_SHARE_READ, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_OPEN_REPARSE_POINT, nullptr);
 575     if (source == INVALID_HANDLE_VALUE)
 576         throw last_error(GetLastError());
 577
 578     Status = NtFsControlFile(source, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_INODE_INFO, nullptr, 0, &bii, sizeof(btrfs_inode_info));
 579     if (!NT_SUCCESS(Status))
 580         throw ntstatus_error(Status);
 581
 582     // if subvol, do snapshot instead
 583     if (bii.inode == SUBVOL_ROOT_INODE) {
 584         btrfs_create_snapshot* bcs;
 585         win_handle dirh;
 586         wstring destname, search;
 587         WIN32_FIND_DATAW wfd;
 588         int num = 2;
 589
 590         dirh = CreateFileW(dir, FILE_ADD_SUBDIRECTORY, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
 591         if (dirh == INVALID_HANDLE_VALUE)
 592             throw last_error(GetLastError());
 593
 594         search = dirw;
 595         search += name;
 596         destname = name;
 597
 598         fff_handle fff = FindFirstFileW(search.c_str(), &wfd);
 599
 600         if (fff != INVALID_HANDLE_VALUE) {
 601             do {
 602                 wstringstream ss;
 603
 604                 ss << name;
 605                 ss << L" (";
 606                 ss << num;
 607                 ss << L")";
 608                 destname = ss.str();
 609
 610                 search = dirw + destname;
 611
 612                 fff = FindFirstFileW(search.c_str(), &wfd);
 613                 num++;
 614             } while (fff != INVALID_HANDLE_VALUE);
 615         }
 616
 617         bcs = (btrfs_create_snapshot*)malloc(sizeof(btrfs_create_snapshot) - sizeof(WCHAR) + (destname.length() * sizeof(WCHAR)));
 618         bcs->subvol = source;
 619         bcs->namelen = (uint16_t)(destname.length() * sizeof(WCHAR));
 620         memcpy(bcs->name, destname.c_str(), destname.length() * sizeof(WCHAR));
 621
 622         Status = NtFsControlFile(dirh, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_CREATE_SNAPSHOT, bcs, sizeof(btrfs_create_snapshot) - sizeof(WCHAR) + bcs->namelen, nullptr, 0);
 623
 624         free(bcs);
 625
 626         if (!NT_SUCCESS(Status))
 627             throw ntstatus_error(Status);
 628
 629         return;
 630     }
 631
 632     if (!GetFileInformationByHandleEx(source, FileBasicInfo, &fbi, sizeof(FILE_BASIC_INFO)))
 633         throw last_error(GetLastError());
 634
 635     if (bii.type == BTRFS_TYPE_CHARDEV || bii.type == BTRFS_TYPE_BLOCKDEV || bii.type == BTRFS_TYPE_FIFO || bii.type == BTRFS_TYPE_SOCKET) {
 636         win_handle dirh;
 637         ULONG bmnsize;
 638         btrfs_mknod* bmn;
 639
 640         dirh = CreateFileW(dir, FILE_ADD_FILE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
 641         if (dirh == INVALID_HANDLE_VALUE)
 642             throw last_error(GetLastError());
 643
 644         bmnsize = offsetof(btrfs_mknod, name[0]) + (wcslen(name) * sizeof(WCHAR));
 645         bmn = (btrfs_mknod*)malloc(bmnsize);
 646
 647         bmn->inode = 0;
 648         bmn->type = bii.type;
 649         bmn->st_rdev = bii.st_rdev;
 650         bmn->namelen = (uint16_t)(wcslen(name) * sizeof(WCHAR));
 651         memcpy(bmn->name, name, bmn->namelen);
 652
 653         Status = NtFsControlFile(dirh, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_MKNOD, bmn, bmnsize, nullptr, 0);
 654         if (!NT_SUCCESS(Status)) {
 655             free(bmn);
 656             throw ntstatus_error(Status);
 657         }
 658
 659         free(bmn);
 660
 661         dest = CreateFileW(newpath.c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, nullptr, OPEN_EXISTING, 0, nullptr);
 662     } else if (fbi.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
 663         if (CreateDirectoryExW(fn, newpath.c_str(), nullptr))
 664             dest = CreateFileW(newpath.c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
 665                                nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
 666         else
 667             dest = INVALID_HANDLE_VALUE;
 668     } else
 669         dest = CreateFileW(newpath.c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, nullptr, CREATE_NEW, 0, source);
 670
 671     if (dest == INVALID_HANDLE_VALUE) {
 672         int num = 2;
 673
 674         if (GetLastError() != ERROR_FILE_EXISTS && GetLastError() != ERROR_ALREADY_EXISTS && wcscmp(fn, newpath.c_str()))
 675             throw last_error(GetLastError());
 676
 677         do {
 678             WCHAR* ext;
 679             wstringstream ss;
 680
 681             ext = PathFindExtensionW(fn);
 682
 683             ss << dirw;
 684
 685             if (*ext == 0) {
 686                 ss << name;
 687                 ss << L" (";
 688                 ss << num;
 689                 ss << L")";
 690             } else {
 691                 wstring namew = name;
 692
 693                 ss << namew.substr(0, ext - name);
 694                 ss << L" (";
 695                 ss << num;
 696                 ss << L")";
 697                 ss << ext;
 698             }
 699
 700             newpath = ss.str();
 701             if (fbi.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
 702                 if (CreateDirectoryExW(fn, newpath.c_str(), nullptr))
 703                     dest = CreateFileW(newpath.c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
 704                 else
 705                     dest = INVALID_HANDLE_VALUE;
 706             } else
 707                 dest = CreateFileW(newpath.c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, nullptr, CREATE_NEW, 0, source);
 708
 709             if (dest == INVALID_HANDLE_VALUE) {
 710                 if (GetLastError() != ERROR_FILE_EXISTS && GetLastError() != ERROR_ALREADY_EXISTS)
 711                     throw last_error(GetLastError());
 712
 713                 num++;
 714             } else
 715                 break;
 716         } while (true);
 717     }
 718
 719     try {
 720         memset(&bsii, 0, sizeof(btrfs_set_inode_info));
 721
 722         bsii.flags_changed = true;
 723         bsii.flags = bii.flags;
 724
 725         if (bii.flags & BTRFS_INODE_COMPRESS) {
 726             bsii.compression_type_changed = true;
 727             bsii.compression_type = bii.compression_type;
 728         }
 729
 730         Status = NtFsControlFile(dest, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_SET_INODE_INFO, &bsii, sizeof(btrfs_set_inode_info), nullptr, 0);
 731         if (!NT_SUCCESS(Status))
 732             throw ntstatus_error(Status);
 733
 734         if (fbi.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
 735             if (!(fbi.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
 736                 fff_handle h;
 737                 WIN32_FIND_DATAW fff;
 738                 wstring qs;
 739
 740                 qs = fn;
 741                 qs += L"\\*";
 742
 743                 h = FindFirstFileW(qs.c_str(), &fff);
 744                 if (h != INVALID_HANDLE_VALUE) {
 745                     do {
 746                         wstring fn2;
 747
 748                         if (fff.cFileName[0] == '.' && (fff.cFileName[1] == 0 || (fff.cFileName[1] == '.' && fff.cFileName[2] == 0)))
 749                             continue;
 750
 751                         fn2 = fn;
 752                         fn2 += L"\\";
 753                         fn2 += fff.cFileName;
 754
 755                         reflink_copy(hwnd, fn2.c_str(), newpath.c_str());
 756                     } while (FindNextFileW(h, &fff));
 757                 }
 758             }
 759
 760             // CreateDirectoryExW also copies streams, no need to do it here
 761         } else {
 762             WIN32_FIND_STREAM_DATA fsd;
 763
 764             if (fbi.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
 765                 reparse_header rh;
 766                 ULONG rplen;
 767                 uint8_t* rp;
 768
 769                 if (!DeviceIoControl(source, FSCTL_GET_REPARSE_POINT, nullptr, 0, &rh, sizeof(reparse_header), &bytesret, nullptr)) {
 770                     if (GetLastError() != ERROR_MORE_DATA)
 771                         throw last_error(GetLastError());
 772                 }
 773
 774                 rplen = sizeof(reparse_header) + rh.ReparseDataLength;
 775                 rp = (uint8_t*)malloc(rplen);
 776
 777                 if (!DeviceIoControl(source, FSCTL_GET_REPARSE_POINT, nullptr, 0, rp, rplen, &bytesret, nullptr))
 778                     throw last_error(GetLastError());
 779
 780                 if (!DeviceIoControl(dest, FSCTL_SET_REPARSE_POINT, rp, rplen, nullptr, 0, &bytesret, nullptr))
 781                     throw last_error(GetLastError());
 782
 783                 free(rp);
 784             } else {
 785                 FILE_STANDARD_INFO fsi;
 786                 FILE_END_OF_FILE_INFO feofi;
 787                 FSCTL_GET_INTEGRITY_INFORMATION_BUFFER fgiib;
 788                 FSCTL_SET_INTEGRITY_INFORMATION_BUFFER fsiib;
 789                 DUPLICATE_EXTENTS_DATA ded;
 790                 uint64_t offset, alloc_size;
 791                 ULONG maxdup;
 792
 793                 if (!GetFileInformationByHandleEx(source, FileStandardInfo, &fsi, sizeof(FILE_STANDARD_INFO)))
 794                     throw last_error(GetLastError());
 795
 796                 if (!DeviceIoControl(source, FSCTL_GET_INTEGRITY_INFORMATION, nullptr, 0, &fgiib, sizeof(FSCTL_GET_INTEGRITY_INFORMATION_BUFFER), &bytesret, nullptr))
 797                     throw last_error(GetLastError());
 798
 799                 if (fbi.FileAttributes & FILE_ATTRIBUTE_SPARSE_FILE) {
 800                     if (!DeviceIoControl(dest, FSCTL_SET_SPARSE, nullptr, 0, nullptr, 0, &bytesret, nullptr))
 801                         throw last_error(GetLastError());
 802                 }
 803
 804                 fsiib.ChecksumAlgorithm = fgiib.ChecksumAlgorithm;
 805                 fsiib.Reserved = 0;
 806                 fsiib.Flags = fgiib.Flags;
 807                 if (!DeviceIoControl(dest, FSCTL_SET_INTEGRITY_INFORMATION, &fsiib, sizeof(FSCTL_SET_INTEGRITY_INFORMATION_BUFFER), nullptr, 0, &bytesret, nullptr))
 808                     throw last_error(GetLastError());
 809
 810                 feofi.EndOfFile = fsi.EndOfFile;
 811                 if (!SetFileInformationByHandle(dest, FileEndOfFileInfo, &feofi, sizeof(FILE_END_OF_FILE_INFO)))
 812                     throw last_error(GetLastError());
 813
 814                 ded.FileHandle = source;
 815                 maxdup = 0xffffffff - fgiib.ClusterSizeInBytes + 1;
 816
 817                 alloc_size = sector_align(fsi.EndOfFile.QuadPart, fgiib.ClusterSizeInBytes);
 818
 819                 offset = 0;
 820                 while (offset < alloc_size) {
 821                     ded.SourceFileOffset.QuadPart = ded.TargetFileOffset.QuadPart = offset;
 822                     ded.ByteCount.QuadPart = maxdup < (alloc_size - offset) ? maxdup : (alloc_size - offset);
 823                     if (!DeviceIoControl(dest, FSCTL_DUPLICATE_EXTENTS_TO_FILE, &ded, sizeof(DUPLICATE_EXTENTS_DATA), nullptr, 0, &bytesret, nullptr))
 824                         throw last_error(GetLastError());
 825
 826                     offset += ded.ByteCount.QuadPart;
 827                 }
 828             }
 829
 830             fff_handle h = FindFirstStreamW(fn, FindStreamInfoStandard, &fsd, 0);
 831             if (h != INVALID_HANDLE_VALUE) {
 832                 do {
 833                     wstring sn;
 834
 835                     sn = fsd.cStreamName;
 836
 837                     if (sn != L"::$DATA" && sn.length() > 6 && sn.substr(sn.length() - 6, 6) == L":$DATA") {
 838                         win_handle stream;
 839                         uint8_t* data = nullptr;
 840                         uint16_t stream_size = (uint16_t)fsd.StreamSize.QuadPart;
 841
 842                         if (fsd.StreamSize.QuadPart > 0) {
 843                             wstring fn2;
 844
 845                             fn2 = fn;
 846                             fn2 += sn;
 847
 848                             stream = CreateFileW(fn2.c_str(), GENERIC_READ, 0, nullptr, OPEN_EXISTING, 0, nullptr);
 849
 850                             if (stream == INVALID_HANDLE_VALUE)
 851                                 throw last_error(GetLastError());
 852
 853                             // We can get away with this because our streams are guaranteed to be below 64 KB -
 854                             // don't do this on NTFS!
 855                             data = (uint8_t*)malloc(stream_size);
 856
 857                             if (!ReadFile(stream, data, stream_size, &bytesret, nullptr)) {
 858                                 free(data);
 859                                 throw last_error(GetLastError());
 860                             }
 861                         }
 862
 863                         stream = CreateFileW((newpath + sn).c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, nullptr, CREATE_NEW, 0, nullptr);
 864
 865                         if (stream == INVALID_HANDLE_VALUE) {
 866                             if (data) free(data);
 867                             throw last_error(GetLastError());
 868                         }
 869
 870                         if (data) {
 871                             if (!WriteFile(stream, data, stream_size, &bytesret, nullptr)) {
 872                                 free(data);
 873                                 throw last_error(GetLastError());
 874                             }
 875
 876                             free(data);
 877                         }
 878                     }
 879                 } while (FindNextStreamW(h, &fsd));
 880             }
 881         }
 882
 883         atime.dwLowDateTime = fbi.LastAccessTime.LowPart;
 884         atime.dwHighDateTime = fbi.LastAccessTime.HighPart;
 885         mtime.dwLowDateTime = fbi.LastWriteTime.LowPart;
 886         mtime.dwHighDateTime = fbi.LastWriteTime.HighPart;
 887         SetFileTime(dest, nullptr, &atime, &mtime);
 888
 889         Status = NtFsControlFile(source, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_XATTRS, nullptr, 0, &bsxa, sizeof(btrfs_set_xattr));
 890
 891         if (Status == STATUS_BUFFER_OVERFLOW || (NT_SUCCESS(Status) && bsxa.valuelen > 0)) {
 892             ULONG xalen = 0;
 893             btrfs_set_xattr *xa = nullptr, *xa2;
 894
 895             do {
 896                 xalen += 1024;
 897
 898                 if (xa) free(xa);
 899                 xa = (btrfs_set_xattr*)malloc(xalen);
 900
 901                 Status = NtFsControlFile(source, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_XATTRS, nullptr, 0, xa, xalen);
 902             } while (Status == STATUS_BUFFER_OVERFLOW);
 903
 904             if (!NT_SUCCESS(Status)) {
 905                 free(xa);
 906                 throw ntstatus_error(Status);
 907             }
 908
 909             xa2 = xa;
 910             while (xa2->valuelen > 0) {
 911                 Status = NtFsControlFile(dest, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_SET_XATTR, xa2,
 912                                         offsetof(btrfs_set_xattr, data[0]) + xa2->namelen + xa2->valuelen, nullptr, 0);
 913                 if (!NT_SUCCESS(Status)) {
 914                     free(xa);
 915                     throw ntstatus_error(Status);
 916                 }
 917                 xa2 = (btrfs_set_xattr*)&xa2->data[xa2->namelen + xa2->valuelen];
 918             }
 919
 920             free(xa);
 921         } else if (!NT_SUCCESS(Status))
 922             throw ntstatus_error(Status);
 923     } catch (...) {
 924         FILE_DISPOSITION_INFO fdi;
 925
 926         fdi.DeleteFile = true;
 927         if (!SetFileInformationByHandle(dest, FileDispositionInfo, &fdi, sizeof(FILE_DISPOSITION_INFO)))
 928             throw last_error(GetLastError());
 929
 930         throw;
 931     }
 932 }
 933
 934 HRESULT __stdcall BtrfsContextMenu::InvokeCommand(LPCMINVOKECOMMANDINFO picia) {
 935     LPCMINVOKECOMMANDINFOEX pici = (LPCMINVOKECOMMANDINFOEX)picia;
 936
 937     try {
 938         if (ignore)
 939             return E_INVALIDARG;
 940
 941         if (!bg) {
 942             if ((IS_INTRESOURCE(pici->lpVerb) && allow_snapshot && pici->lpVerb == 0) || (!IS_INTRESOURCE(pici->lpVerb) && !strcmp(pici->lpVerb, SNAPSHOT_VERBA))) {
 943                 UINT num_files, i;
 944                 WCHAR fn[MAX_PATH];
 945
 946                 if (!stgm_set)
 947                     return E_FAIL;
 948
 949                 num_files = DragQueryFileW((HDROP)stgm.hGlobal, 0xFFFFFFFF, nullptr, 0);
 950
 951                 if (num_files == 0)
 952                     return E_FAIL;
 953
 954                 for (i = 0; i < num_files; i++) {
 955                     if (DragQueryFileW((HDROP)stgm.hGlobal, i, fn, sizeof(fn) / sizeof(WCHAR))) {
 956                         create_snapshot(pici->hwnd, fn);
 957                     }
 958                 }
 959
 960                 return S_OK;
 961             } else if ((IS_INTRESOURCE(pici->lpVerb) && ((allow_snapshot && (ULONG_PTR)pici->lpVerb == 1) || (!allow_snapshot && (ULONG_PTR)pici->lpVerb == 0))) ||
 962                     (!IS_INTRESOURCE(pici->lpVerb) && !strcmp(pici->lpVerb, SEND_VERBA))) {
 963                 UINT num_files, i;
 964                 WCHAR dll[MAX_PATH], fn[MAX_PATH];
 965                 wstring t;
 966                 SHELLEXECUTEINFOW sei;
 967
 968                 GetModuleFileNameW(module, dll, sizeof(dll) / sizeof(WCHAR));
 969
 970                 if (!stgm_set)
 971                     return E_FAIL;
 972
 973                 num_files = DragQueryFileW((HDROP)stgm.hGlobal, 0xFFFFFFFF, nullptr, 0);
 974
 975                 if (num_files == 0)
 976                     return E_FAIL;
 977
 978                 for (i = 0; i < num_files; i++) {
 979                     if (DragQueryFileW((HDROP)stgm.hGlobal, i, fn, sizeof(fn) / sizeof(WCHAR))) {
 980                         t = L"\"";
 981                         t += dll;
 982                         t += L"\",SendSubvolGUI ";
 983                         t += fn;
 984
 985                         RtlZeroMemory(&sei, sizeof(sei));
 986
 987                         sei.cbSize = sizeof(sei);
 988                         sei.hwnd = pici->hwnd;
 989                         sei.lpVerb = L"runas";
 990                         sei.lpFile = L"rundll32.exe";
 991                         sei.lpParameters = t.c_str();
 992                         sei.nShow = SW_SHOW;
 993                         sei.fMask = SEE_MASK_NOCLOSEPROCESS;
 994
 995                         if (!ShellExecuteExW(&sei))
 996                             throw last_error(GetLastError());
 997
 998                         WaitForSingleObject(sei.hProcess, INFINITE);
 999                         CloseHandle(sei.hProcess);
1000                     }
1001                 }
1002
1003                 return S_OK;
1004             }
1005         } else {
1006             if ((IS_INTRESOURCE(pici->lpVerb) && (ULONG_PTR)pici->lpVerb == 0) || (!IS_INTRESOURCE(pici->lpVerb) && !strcmp(pici->lpVerb, NEW_SUBVOL_VERBA))) {
1007                 win_handle h;
1008                 IO_STATUS_BLOCK iosb;
1009                 NTSTATUS Status;
1010                 ULONG bcslen;
1011                 wstring name, nameorig, searchpath;
1012                 btrfs_create_subvol* bcs;
1013                 WIN32_FIND_DATAW wfd;
1014
1015                 if (!load_string(module, IDS_NEW_SUBVOL_FILENAME, name))
1016                     throw last_error(GetLastError());
1017
1018                 h = CreateFileW(path.c_str(), FILE_ADD_SUBDIRECTORY, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
1019
1020                 if (h == INVALID_HANDLE_VALUE)
1021                     throw last_error(GetLastError());
1022
1023                 searchpath = path + L"\\" + name;
1024                 nameorig = name;
1025
1026                 {
1027                     fff_handle fff = FindFirstFileW(searchpath.c_str(), &wfd);
1028
1029                     if (fff != INVALID_HANDLE_VALUE) {
1030                         ULONG num = 2;
1031
1032                         do {
1033 #ifndef __REACTOS__
1034                             name = nameorig + L" (" + to_wstring(num) + L")";
1035 #else
1036                             {
1037                                 WCHAR buffer[32];
1038
1039                                 swprintf(buffer, L"%d", num);
1040                                 name = nameorig + L" (" + buffer + L")";
1041                             }
1042 #endif
1043                             searchpath = path + L"\\" + name;
1044
1045                             fff = FindFirstFileW(searchpath.c_str(), &wfd);
1046                             num++;
1047                         } while (fff != INVALID_HANDLE_VALUE);
1048                     }
1049                 }
1050
1051                 bcslen = offsetof(btrfs_create_subvol, name[0]) + (name.length() * sizeof(WCHAR));
1052                 bcs = (btrfs_create_subvol*)malloc(bcslen);
1053
1054                 bcs->readonly = false;
1055                 bcs->posix = false;
1056                 bcs->namelen = (uint16_t)(name.length() * sizeof(WCHAR));
1057                 memcpy(bcs->name, name.c_str(), name.length() * sizeof(WCHAR));
1058
1059                 Status = NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_CREATE_SUBVOL, bcs, bcslen, nullptr, 0);
1060
1061                 free(bcs);
1062
1063                 if (!NT_SUCCESS(Status))
1064                     throw ntstatus_error(Status);
1065
1066                 return S_OK;
1067             } else if ((IS_INTRESOURCE(pici->lpVerb) && (ULONG_PTR)pici->lpVerb == 1) || (!IS_INTRESOURCE(pici->lpVerb) && !strcmp(pici->lpVerb, RECV_VERBA))) {
1068                 WCHAR dll[MAX_PATH];
1069                 wstring t;
1070                 SHELLEXECUTEINFOW sei;
1071
1072                 GetModuleFileNameW(module, dll, sizeof(dll) / sizeof(WCHAR));
1073
1074                 t = L"\"";
1075                 t += dll;
1076                 t += L"\",RecvSubvolGUI ";
1077                 t += path;
1078
1079                 RtlZeroMemory(&sei, sizeof(sei));
1080
1081                 sei.cbSize = sizeof(sei);
1082                 sei.hwnd = pici->hwnd;
1083                 sei.lpVerb = L"runas";
1084                 sei.lpFile = L"rundll32.exe";
1085                 sei.lpParameters = t.c_str();
1086                 sei.nShow = SW_SHOW;
1087                 sei.fMask = SEE_MASK_NOCLOSEPROCESS;
1088
1089                 if (!ShellExecuteExW(&sei))
1090                     throw last_error(GetLastError());
1091
1092                 WaitForSingleObject(sei.hProcess, INFINITE);
1093                 CloseHandle(sei.hProcess);
1094
1095                 return S_OK;
1096             } else if ((IS_INTRESOURCE(pici->lpVerb) && (ULONG_PTR)pici->lpVerb == 2) || (!IS_INTRESOURCE(pici->lpVerb) && !strcmp(pici->lpVerb, REFLINK_VERBA))) {
1097                 HDROP hdrop;
1098
1099                 if (!IsClipboardFormatAvailable(CF_HDROP))
1100                     return S_OK;
1101
1102                 if (!OpenClipboard(pici->hwnd))
1103                     throw last_error(GetLastError());
1104
1105                 try {
1106                     hdrop = (HDROP)GetClipboardData(CF_HDROP);
1107
1108                     if (hdrop) {
1109                         HANDLE lh;
1110
1111                         lh = GlobalLock(hdrop);
1112
1113                         if (lh) {
1114                             try {
1115                                 ULONG num_files, i;
1116                                 WCHAR fn[MAX_PATH];
1117
1118                                 num_files = DragQueryFileW(hdrop, 0xFFFFFFFF, nullptr, 0);
1119
1120                                 for (i = 0; i < num_files; i++) {
1121                                     if (DragQueryFileW(hdrop, i, fn, sizeof(fn) / sizeof(WCHAR))) {
1122                                         reflink_copy(pici->hwnd, fn, pici->lpDirectoryW);
1123                                     }
1124                                 }
1125                             } catch (...) {
1126                                 GlobalUnlock(lh);
1127                                 throw;
1128                             }
1129
1130                             GlobalUnlock(lh);
1131                         }
1132                     }
1133                 } catch (...) {
1134                     CloseClipboard();
1135                     throw;
1136                 }
1137
1138                 CloseClipboard();
1139
1140                 return S_OK;
1141             }
1142         }
1143     } catch (const exception& e) {
1144         error_message(pici->hwnd, e.what());
1145     }
1146
1147     return E_FAIL;
1148 }
1149
1150 HRESULT __stdcall BtrfsContextMenu::GetCommandString(UINT_PTR idCmd, UINT uFlags, UINT* pwReserved, LPSTR pszName, UINT cchMax) {
1151     if (ignore)
1152         return E_INVALIDARG;
1153
1154     if (idCmd != 0)
1155         return E_INVALIDARG;
1156
1157     if (!bg) {
1158         if (idCmd == 0) {
1159             switch (uFlags) {
1160                 case GCS_HELPTEXTA:
1161                     if (LoadStringA(module, IDS_CREATE_SNAPSHOT_HELP_TEXT, pszName, cchMax))
1162                         return S_OK;
1163                     else
1164                         return E_FAIL;
1165
1166                 case GCS_HELPTEXTW:
1167                     if (LoadStringW(module, IDS_CREATE_SNAPSHOT_HELP_TEXT, (LPWSTR)pszName, cchMax))
1168                         return S_OK;
1169                     else
1170                         return E_FAIL;
1171
1172                 case GCS_VALIDATEA:
1173                 case GCS_VALIDATEW:
1174                     return S_OK;
1175
1176                 case GCS_VERBA:
1177                     return StringCchCopyA(pszName, cchMax, SNAPSHOT_VERBA);
1178
1179                 case GCS_VERBW:
1180                     return StringCchCopyW((STRSAFE_LPWSTR)pszName, cchMax, SNAPSHOT_VERBW);
1181
1182                 default:
1183                     return E_INVALIDARG;
1184             }
1185         } else if (idCmd == 1) {
1186             switch (uFlags) {
1187                 case GCS_HELPTEXTA:
1188                     if (LoadStringA(module, IDS_SEND_SUBVOL_HELP, pszName, cchMax))
1189                         return S_OK;
1190                     else
1191                         return E_FAIL;
1192
1193                 case GCS_HELPTEXTW:
1194                     if (LoadStringW(module, IDS_SEND_SUBVOL_HELP, (LPWSTR)pszName, cchMax))
1195                         return S_OK;
1196                     else
1197                         return E_FAIL;
1198
1199                 case GCS_VALIDATEA:
1200                 case GCS_VALIDATEW:
1201                     return S_OK;
1202
1203                 case GCS_VERBA:
1204                     return StringCchCopyA(pszName, cchMax, SEND_VERBA);
1205
1206                 case GCS_VERBW:
1207                     return StringCchCopyW((STRSAFE_LPWSTR)pszName, cchMax, SEND_VERBW);
1208
1209                 default:
1210                     return E_INVALIDARG;
1211                 }
1212         } else
1213             return E_INVALIDARG;
1214     } else {
1215         if (idCmd == 0) {
1216             switch (uFlags) {
1217                 case GCS_HELPTEXTA:
1218                     if (LoadStringA(module, IDS_NEW_SUBVOL_HELP_TEXT, pszName, cchMax))
1219                         return S_OK;
1220                     else
1221                         return E_FAIL;
1222
1223                 case GCS_HELPTEXTW:
1224                     if (LoadStringW(module, IDS_NEW_SUBVOL_HELP_TEXT, (LPWSTR)pszName, cchMax))
1225                         return S_OK;
1226                     else
1227                         return E_FAIL;
1228
1229                 case GCS_VALIDATEA:
1230                 case GCS_VALIDATEW:
1231                     return S_OK;
1232
1233                 case GCS_VERBA:
1234                     return StringCchCopyA(pszName, cchMax, NEW_SUBVOL_VERBA);
1235
1236                 case GCS_VERBW:
1237                     return StringCchCopyW((STRSAFE_LPWSTR)pszName, cchMax, NEW_SUBVOL_VERBW);
1238
1239                 default:
1240                     return E_INVALIDARG;
1241             }
1242         } else if (idCmd == 1) {
1243             switch (uFlags) {
1244                 case GCS_HELPTEXTA:
1245                     if (LoadStringA(module, IDS_RECV_SUBVOL_HELP, pszName, cchMax))
1246                         return S_OK;
1247                     else
1248                         return E_FAIL;
1249
1250                 case GCS_HELPTEXTW:
1251                     if (LoadStringW(module, IDS_RECV_SUBVOL_HELP, (LPWSTR)pszName, cchMax))
1252                         return S_OK;
1253                     else
1254                         return E_FAIL;
1255
1256                 case GCS_VALIDATEA:
1257                 case GCS_VALIDATEW:
1258                     return S_OK;
1259
1260                 case GCS_VERBA:
1261                     return StringCchCopyA(pszName, cchMax, RECV_VERBA);
1262
1263                 case GCS_VERBW:
1264                     return StringCchCopyW((STRSAFE_LPWSTR)pszName, cchMax, RECV_VERBW);
1265
1266                 default:
1267                     return E_INVALIDARG;
1268             }
1269         } else if (idCmd == 2) {
1270             switch (uFlags) {
1271                 case GCS_HELPTEXTA:
1272                     if (LoadStringA(module, IDS_REFLINK_PASTE_HELP, pszName, cchMax))
1273                         return S_OK;
1274                     else
1275                         return E_FAIL;
1276
1277                 case GCS_HELPTEXTW:
1278                     if (LoadStringW(module, IDS_REFLINK_PASTE_HELP, (LPWSTR)pszName, cchMax))
1279                         return S_OK;
1280                     else
1281                         return E_FAIL;
1282
1283                 case GCS_VALIDATEA:
1284                 case GCS_VALIDATEW:
1285                     return S_OK;
1286
1287                 case GCS_VERBA:
1288                     return StringCchCopyA(pszName, cchMax, REFLINK_VERBA);
1289
1290                 case GCS_VERBW:
1291                     return StringCchCopyW((STRSAFE_LPWSTR)pszName, cchMax, REFLINK_VERBW);
1292
1293                 default:
1294                     return E_INVALIDARG;
1295             }
1296         } else
1297             return E_INVALIDARG;
1298     }
1299 }
1300
1301 static void reflink_copy2(const wstring& srcfn, const wstring& destdir, const wstring& destname) {
1302     win_handle source, dest;
1303     FILE_BASIC_INFO fbi;
1304     FILETIME atime, mtime;
1305     btrfs_inode_info bii;
1306     btrfs_set_inode_info bsii;
1307     ULONG bytesret;
1308     NTSTATUS Status;
1309     IO_STATUS_BLOCK iosb;
1310     btrfs_set_xattr bsxa;
1311
1312     source = CreateFileW(srcfn.c_str(), GENERIC_READ | FILE_TRAVERSE, FILE_SHARE_READ, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_OPEN_REPARSE_POINT, nullptr);
1313     if (source == INVALID_HANDLE_VALUE)
1314         throw last_error(GetLastError());
1315
1316     Status = NtFsControlFile(source, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_INODE_INFO, nullptr, 0, &bii, sizeof(btrfs_inode_info));
1317     if (!NT_SUCCESS(Status))
1318         throw ntstatus_error(Status);
1319
1320     // if subvol, do snapshot instead
1321     if (bii.inode == SUBVOL_ROOT_INODE) {
1322         ULONG bcslen;
1323         btrfs_create_snapshot* bcs;
1324         win_handle dirh;
1325
1326         dirh = CreateFileW(destdir.c_str(), FILE_ADD_SUBDIRECTORY, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
1327         if (dirh == INVALID_HANDLE_VALUE)
1328             throw last_error(GetLastError());
1329
1330         bcslen = offsetof(btrfs_create_snapshot, name[0]) + (destname.length() * sizeof(WCHAR));
1331         bcs = (btrfs_create_snapshot*)malloc(bcslen);
1332         bcs->subvol = source;
1333         bcs->namelen = (uint16_t)(destname.length() * sizeof(WCHAR));
1334         memcpy(bcs->name, destname.c_str(), destname.length() * sizeof(WCHAR));
1335
1336         Status = NtFsControlFile(dirh, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_CREATE_SNAPSHOT, bcs, bcslen, nullptr, 0);
1337         if (!NT_SUCCESS(Status)) {
1338             free(bcs);
1339             throw ntstatus_error(Status);
1340         }
1341
1342         free(bcs);
1343
1344         return;
1345     }
1346
1347     if (!GetFileInformationByHandleEx(source, FileBasicInfo, &fbi, sizeof(FILE_BASIC_INFO)))
1348         throw last_error(GetLastError());
1349
1350     if (bii.type == BTRFS_TYPE_CHARDEV || bii.type == BTRFS_TYPE_BLOCKDEV || bii.type == BTRFS_TYPE_FIFO || bii.type == BTRFS_TYPE_SOCKET) {
1351         win_handle dirh;
1352         ULONG bmnsize;
1353         btrfs_mknod* bmn;
1354
1355         dirh = CreateFileW(destdir.c_str(), FILE_ADD_FILE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
1356         if (dirh == INVALID_HANDLE_VALUE)
1357             throw last_error(GetLastError());
1358
1359         bmnsize = offsetof(btrfs_mknod, name[0]) + (destname.length() * sizeof(WCHAR));
1360         bmn = (btrfs_mknod*)malloc(bmnsize);
1361
1362         bmn->inode = 0;
1363         bmn->type = bii.type;
1364         bmn->st_rdev = bii.st_rdev;
1365         bmn->namelen = (uint16_t)(destname.length() * sizeof(WCHAR));
1366         memcpy(bmn->name, destname.c_str(), bmn->namelen);
1367
1368         Status = NtFsControlFile(dirh, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_MKNOD, bmn, bmnsize, nullptr, 0);
1369         if (!NT_SUCCESS(Status)) {
1370             free(bmn);
1371             throw ntstatus_error(Status);
1372         }
1373
1374         free(bmn);
1375
1376         dest = CreateFileW((destdir + destname).c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, nullptr, OPEN_EXISTING, 0, nullptr);
1377     } else if (fbi.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
1378         if (CreateDirectoryExW(srcfn.c_str(), (destdir + destname).c_str(), nullptr))
1379             dest = CreateFileW((destdir + destname).c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
1380                                nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
1381         else
1382             dest = INVALID_HANDLE_VALUE;
1383     } else
1384         dest = CreateFileW((destdir + destname).c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, nullptr, CREATE_NEW, 0, source);
1385
1386     if (dest == INVALID_HANDLE_VALUE)
1387         throw last_error(GetLastError());
1388
1389     memset(&bsii, 0, sizeof(btrfs_set_inode_info));
1390
1391     bsii.flags_changed = true;
1392     bsii.flags = bii.flags;
1393
1394     if (bii.flags & BTRFS_INODE_COMPRESS) {
1395         bsii.compression_type_changed = true;
1396         bsii.compression_type = bii.compression_type;
1397     }
1398
1399     try {
1400         Status = NtFsControlFile(dest, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_SET_INODE_INFO, &bsii, sizeof(btrfs_set_inode_info), nullptr, 0);
1401         if (!NT_SUCCESS(Status))
1402             throw ntstatus_error(Status);
1403
1404         if (fbi.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
1405             if (!(fbi.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
1406                 WIN32_FIND_DATAW fff;
1407                 wstring qs;
1408
1409                 qs = srcfn;
1410                 qs += L"\\*";
1411
1412                 fff_handle h = FindFirstFileW(qs.c_str(), &fff);
1413                 if (h != INVALID_HANDLE_VALUE) {
1414                     do {
1415                         wstring fn2;
1416
1417                         if (fff.cFileName[0] == '.' && (fff.cFileName[1] == 0 || (fff.cFileName[1] == '.' && fff.cFileName[2] == 0)))
1418                             continue;
1419
1420                         fn2 = srcfn;
1421                         fn2 += L"\\";
1422                         fn2 += fff.cFileName;
1423
1424                         reflink_copy2(fn2, destdir + destname + L"\\", fff.cFileName);
1425                     } while (FindNextFileW(h, &fff));
1426                 }
1427             }
1428
1429             // CreateDirectoryExW also copies streams, no need to do it here
1430         } else {
1431             WIN32_FIND_STREAM_DATA fsd;
1432
1433             if (fbi.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
1434                 reparse_header rh;
1435                 ULONG rplen;
1436                 uint8_t* rp;
1437
1438                 if (!DeviceIoControl(source, FSCTL_GET_REPARSE_POINT, nullptr, 0, &rh, sizeof(reparse_header), &bytesret, nullptr)) {
1439                     if (GetLastError() != ERROR_MORE_DATA)
1440                         throw last_error(GetLastError());
1441                 }
1442
1443                 rplen = sizeof(reparse_header) + rh.ReparseDataLength;
1444                 rp = (uint8_t*)malloc(rplen);
1445
1446                 try {
1447                     if (!DeviceIoControl(source, FSCTL_GET_REPARSE_POINT, nullptr, 0, rp, rplen, &bytesret, nullptr))
1448                         throw last_error(GetLastError());
1449
1450                     if (!DeviceIoControl(dest, FSCTL_SET_REPARSE_POINT, rp, rplen, nullptr, 0, &bytesret, nullptr))
1451                         throw last_error(GetLastError());
1452                 } catch (...) {
1453                     free(rp);
1454                     throw;
1455                 }
1456
1457                 free(rp);
1458             } else {
1459                 FILE_STANDARD_INFO fsi;
1460                 FILE_END_OF_FILE_INFO feofi;
1461                 FSCTL_GET_INTEGRITY_INFORMATION_BUFFER fgiib;
1462                 FSCTL_SET_INTEGRITY_INFORMATION_BUFFER fsiib;
1463                 DUPLICATE_EXTENTS_DATA ded;
1464                 uint64_t offset, alloc_size;
1465                 ULONG maxdup;
1466
1467                 if (!GetFileInformationByHandleEx(source, FileStandardInfo, &fsi, sizeof(FILE_STANDARD_INFO)))
1468                     throw last_error(GetLastError());
1469
1470                 if (!DeviceIoControl(source, FSCTL_GET_INTEGRITY_INFORMATION, nullptr, 0, &fgiib, sizeof(FSCTL_GET_INTEGRITY_INFORMATION_BUFFER), &bytesret, nullptr))
1471                     throw last_error(GetLastError());
1472
1473                 if (fbi.FileAttributes & FILE_ATTRIBUTE_SPARSE_FILE) {
1474                     if (!DeviceIoControl(dest, FSCTL_SET_SPARSE, nullptr, 0, nullptr, 0, &bytesret, nullptr))
1475                         throw last_error(GetLastError());
1476                 }
1477
1478                 fsiib.ChecksumAlgorithm = fgiib.ChecksumAlgorithm;
1479                 fsiib.Reserved = 0;
1480                 fsiib.Flags = fgiib.Flags;
1481                 if (!DeviceIoControl(dest, FSCTL_SET_INTEGRITY_INFORMATION, &fsiib, sizeof(FSCTL_SET_INTEGRITY_INFORMATION_BUFFER), nullptr, 0, &bytesret, nullptr))
1482                     throw last_error(GetLastError());
1483
1484                 feofi.EndOfFile = fsi.EndOfFile;
1485                 if (!SetFileInformationByHandle(dest, FileEndOfFileInfo, &feofi, sizeof(FILE_END_OF_FILE_INFO)))
1486                     throw last_error(GetLastError());
1487
1488                 ded.FileHandle = source;
1489                 maxdup = 0xffffffff - fgiib.ClusterSizeInBytes + 1;
1490
1491                 alloc_size = sector_align(fsi.EndOfFile.QuadPart, fgiib.ClusterSizeInBytes);
1492
1493                 offset = 0;
1494                 while (offset < alloc_size) {
1495                     ded.SourceFileOffset.QuadPart = ded.TargetFileOffset.QuadPart = offset;
1496                     ded.ByteCount.QuadPart = maxdup < (alloc_size - offset) ? maxdup : (alloc_size - offset);
1497                     if (!DeviceIoControl(dest, FSCTL_DUPLICATE_EXTENTS_TO_FILE, &ded, sizeof(DUPLICATE_EXTENTS_DATA), nullptr, 0, &bytesret, nullptr))
1498                         throw last_error(GetLastError());
1499
1500                     offset += ded.ByteCount.QuadPart;
1501                 }
1502             }
1503
1504             fff_handle h = FindFirstStreamW(srcfn.c_str(), FindStreamInfoStandard, &fsd, 0);
1505             if (h != INVALID_HANDLE_VALUE) {
1506                 do {
1507                     wstring sn;
1508
1509                     sn = fsd.cStreamName;
1510
1511                     if (sn != L"::$DATA" && sn.length() > 6 && sn.substr(sn.length() - 6, 6) == L":$DATA") {
1512                         win_handle stream;
1513                         uint8_t* data = nullptr;
1514
1515                         if (fsd.StreamSize.QuadPart > 0) {
1516                             wstring fn2;
1517                             uint16_t stream_size = (uint16_t)fsd.StreamSize.QuadPart;
1518
1519                             fn2 = srcfn;
1520                             fn2 += sn;
1521
1522                             stream = CreateFileW(fn2.c_str(), GENERIC_READ, 0, nullptr, OPEN_EXISTING, 0, nullptr);
1523
1524                             if (stream == INVALID_HANDLE_VALUE)
1525                                 throw last_error(GetLastError());
1526
1527                             // We can get away with this because our streams are guaranteed to be below 64 KB -
1528                             // don't do this on NTFS!
1529                             data = (uint8_t*)malloc(stream_size);
1530
1531                             if (!ReadFile(stream, data, stream_size, &bytesret, nullptr)) {
1532                                 free(data);
1533                                 throw last_error(GetLastError());
1534                             }
1535                         }
1536
1537                         stream = CreateFileW((destdir + destname + sn).c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, nullptr, CREATE_NEW, 0, nullptr);
1538
1539                         if (stream == INVALID_HANDLE_VALUE) {
1540                             if (data) free(data);
1541                             throw last_error(GetLastError());
1542                         }
1543
1544                         if (data) {
1545                             if (!WriteFile(stream, data, (uint32_t)fsd.StreamSize.QuadPart, &bytesret, nullptr)) {
1546                                 free(data);
1547                                 throw last_error(GetLastError());
1548                             }
1549
1550                             free(data);
1551                         }
1552                     }
1553                 } while (FindNextStreamW(h, &fsd));
1554             }
1555         }
1556
1557         atime.dwLowDateTime = fbi.LastAccessTime.LowPart;
1558         atime.dwHighDateTime = fbi.LastAccessTime.HighPart;
1559         mtime.dwLowDateTime = fbi.LastWriteTime.LowPart;
1560         mtime.dwHighDateTime = fbi.LastWriteTime.HighPart;
1561         SetFileTime(dest, nullptr, &atime, &mtime);
1562
1563         Status = NtFsControlFile(source, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_XATTRS, nullptr, 0, &bsxa, sizeof(btrfs_set_xattr));
1564
1565         if (Status == STATUS_BUFFER_OVERFLOW || (NT_SUCCESS(Status) && bsxa.valuelen > 0)) {
1566             ULONG xalen = 0;
1567             btrfs_set_xattr *xa = nullptr, *xa2;
1568
1569             do {
1570                 xalen += 1024;
1571
1572                 if (xa) free(xa);
1573                 xa = (btrfs_set_xattr*)malloc(xalen);
1574
1575                 Status = NtFsControlFile(source, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_XATTRS, nullptr, 0, xa, xalen);
1576             } while (Status == STATUS_BUFFER_OVERFLOW);
1577
1578             if (!NT_SUCCESS(Status)) {
1579                 free(xa);
1580                 throw ntstatus_error(Status);
1581             }
1582
1583             xa2 = xa;
1584             while (xa2->valuelen > 0) {
1585                 Status = NtFsControlFile(dest, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_SET_XATTR, xa2,
1586                                         offsetof(btrfs_set_xattr, data[0]) + xa2->namelen + xa2->valuelen, nullptr, 0);
1587                 if (!NT_SUCCESS(Status)) {
1588                     free(xa);
1589                     throw ntstatus_error(Status);
1590                 }
1591                 xa2 = (btrfs_set_xattr*)&xa2->data[xa2->namelen + xa2->valuelen];
1592             }
1593
1594             free(xa);
1595         } else if (!NT_SUCCESS(Status))
1596             throw ntstatus_error(Status);
1597     } catch (...) {
1598         FILE_DISPOSITION_INFO fdi;
1599
1600         fdi.DeleteFile = true;
1601         SetFileInformationByHandle(dest, FileDispositionInfo, &fdi, sizeof(FILE_DISPOSITION_INFO));
1602
1603         throw;
1604     }
1605 }
1606
1607 #ifdef __REACTOS__
1608 extern "C" {
1609 #endif
1610
1611 void CALLBACK ReflinkCopyW(HWND hwnd, HINSTANCE hinst, LPWSTR lpszCmdLine, int nCmdShow) {
1612     vector<wstring> args;
1613
1614     command_line_to_args(lpszCmdLine, args);
1615
1616     if (args.size() >= 2) {
1617         bool dest_is_dir = false;
1618         wstring dest = args[args.size() - 1], destdir, destname;
1619         WCHAR volpath2[MAX_PATH];
1620
1621         {
1622             win_handle destdirh = CreateFileW(dest.c_str(), FILE_TRAVERSE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
1623                                               nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
1624
1625             if (destdirh != INVALID_HANDLE_VALUE) {
1626                 BY_HANDLE_FILE_INFORMATION bhfi;
1627
1628                 if (GetFileInformationByHandle(destdirh, &bhfi) && bhfi.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
1629                     dest_is_dir = true;
1630
1631                     destdir = dest;
1632                     if (destdir.substr(destdir.length() - 1, 1) != L"\\")
1633                         destdir += L"\\";
1634                 }
1635             }
1636         }
1637
1638         if (!dest_is_dir) {
1639             size_t found = dest.rfind(L"\\");
1640
1641             if (found == wstring::npos) {
1642                 destdir = L"";
1643                 destname = dest;
1644             } else {
1645                 destdir = dest.substr(0, found);
1646                 destname = dest.substr(found + 1);
1647             }
1648         }
1649
1650         if (!GetVolumePathNameW(dest.c_str(), volpath2, sizeof(volpath2) / sizeof(WCHAR)))
1651             return;
1652
1653         for (unsigned int i = 0; i < args.size() - 1; i++) {
1654             WIN32_FIND_DATAW ffd;
1655
1656             fff_handle h = FindFirstFileW(args[i].c_str(), &ffd);
1657             if (h != INVALID_HANDLE_VALUE) {
1658                 WCHAR volpath1[MAX_PATH];
1659                 wstring path = args[i];
1660                 size_t found = path.rfind(L"\\");
1661
1662                 if (found == wstring::npos)
1663                     path = L"";
1664                 else
1665                     path = path.substr(0, found);
1666
1667                 path += L"\\";
1668
1669                 if (get_volume_path_parent(path.c_str(), volpath1, sizeof(volpath1) / sizeof(WCHAR))) {
1670                     if (!wcscmp(volpath1, volpath2)) {
1671                         do {
1672                             try {
1673                                 reflink_copy2(path + ffd.cFileName, destdir, dest_is_dir ? ffd.cFileName : destname);
1674                             } catch (const exception& e) {
1675                                 cerr << "Error: " << e.what() << endl;
1676                             }
1677                         } while (FindNextFileW(h, &ffd));
1678                     }
1679                 }
1680             }
1681         }
1682     }
1683 }
1684
1685 #ifdef __REACTOS__
1686 } /* extern "C" */
1687 #endif