reactos/dll/shellext/shellbtrfs/contextmenu.cpp
Vincent Franchomme 0604273535 [BTRFS][UBTRFS][SHELLBTRFS] Upgrade to 1.7.4 (#4417)
v1.7.4 (2020-08-23):

- Fixed issue when running compressed EXEs
- Changed build system to cmake
- Upgraded zstd to version 1.4.5
- Added support for FSCTL_GET_RETRIEVAL_POINTERS
- Miscellaneous bug fixes
2022-05-03 17:30:11 +02:00

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/* Copyright (c) Mark Harmstone 2016-17
*
* 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 "shellext.h"
#ifndef __REACTOS__
#include <windows.h>
#include <strsafe.h>
#include <stddef.h>
#include <winternl.h>
#else
#define WIN32_NO_STATUS
#include <windef.h>
#include <winbase.h>
#include <strsafe.h>
#include <shellapi.h>
#include <winioctl.h>
#include <ndk/iofuncs.h>
#undef DeleteFile
#endif
#include <wincodec.h>
#include <sstream>
#include <iostream>
#define NO_SHLWAPI_STRFCNS
#include <shlwapi.h>
#include "contextmenu.h"
#include "resource.h"
#ifndef __REACTOS__
#include "../btrfsioctl.h"
#else
#include "btrfsioctl.h"
#endif
#define NEW_SUBVOL_VERBA "newsubvol"
#define NEW_SUBVOL_VERBW L"newsubvol"
#define SNAPSHOT_VERBA "snapshot"
#define SNAPSHOT_VERBW L"snapshot"
#define REFLINK_VERBA "reflink"
#define REFLINK_VERBW L"reflink"
#define RECV_VERBA "recvsubvol"
#define RECV_VERBW L"recvsubvol"
#define SEND_VERBA "sendsubvol"
#define SEND_VERBW L"sendsubvol"
typedef struct {
ULONG ReparseTag;
USHORT ReparseDataLength;
USHORT Reserved;
} reparse_header;
static void path_remove_file(wstring& path);
// FIXME - don't assume subvol's top inode is 0x100
HRESULT __stdcall BtrfsContextMenu::QueryInterface(REFIID riid, void **ppObj) {
if (riid == IID_IUnknown || riid == IID_IContextMenu) {
*ppObj = static_cast<IContextMenu*>(this);
AddRef();
return S_OK;
} else if (riid == IID_IShellExtInit) {
*ppObj = static_cast<IShellExtInit*>(this);
AddRef();
return S_OK;
}
*ppObj = nullptr;
return E_NOINTERFACE;
}
HRESULT __stdcall BtrfsContextMenu::Initialize(PCIDLIST_ABSOLUTE pidlFolder, IDataObject* pdtobj, HKEY hkeyProgID) {
IO_STATUS_BLOCK iosb;
btrfs_get_file_ids bgfi;
NTSTATUS Status;
if (!pidlFolder) {
FORMATETC format = { CF_HDROP, nullptr, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
UINT num_files, i;
WCHAR fn[MAX_PATH];
HDROP hdrop;
if (!pdtobj)
return E_FAIL;
stgm.tymed = TYMED_HGLOBAL;
if (FAILED(pdtobj->GetData(&format, &stgm)))
return E_INVALIDARG;
stgm_set = true;
hdrop = (HDROP)GlobalLock(stgm.hGlobal);
if (!hdrop) {
ReleaseStgMedium(&stgm);
stgm_set = false;
return E_INVALIDARG;
}
num_files = DragQueryFileW((HDROP)stgm.hGlobal, 0xFFFFFFFF, nullptr, 0);
for (i = 0; i < num_files; i++) {
if (DragQueryFileW((HDROP)stgm.hGlobal, i, fn, sizeof(fn) / sizeof(WCHAR))) {
win_handle h = CreateFileW(fn, FILE_TRAVERSE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
if (h != INVALID_HANDLE_VALUE) {
Status = NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_FILE_IDS, nullptr, 0, &bgfi, sizeof(btrfs_get_file_ids));
if (NT_SUCCESS(Status) && bgfi.inode == 0x100 && !bgfi.top) {
wstring parpath;
{
win_handle h2;
parpath = fn;
path_remove_file(parpath);
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);
if (h2 != INVALID_HANDLE_VALUE)
allow_snapshot = true;
}
ignore = false;
bg = false;
GlobalUnlock(hdrop);
return S_OK;
}
}
}
}
GlobalUnlock(hdrop);
return S_OK;
}
{
WCHAR pathbuf[MAX_PATH];
if (!SHGetPathFromIDListW(pidlFolder, pathbuf))
return E_FAIL;
path = pathbuf;
}
{
// check we have permissions to create new subdirectory
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);
if (h == INVALID_HANDLE_VALUE)
return E_FAIL;
// check is Btrfs volume
Status = NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_FILE_IDS, nullptr, 0, &bgfi, sizeof(btrfs_get_file_ids));
if (!NT_SUCCESS(Status))
return E_FAIL;
}
ignore = false;
bg = true;
return S_OK;
}
static bool get_volume_path_parent(const WCHAR* fn, WCHAR* volpath, ULONG volpathlen) {
WCHAR *f, *p;
bool b;
f = PathFindFileNameW(fn);
if (f == fn)
return GetVolumePathNameW(fn, volpath, volpathlen);
p = (WCHAR*)malloc((f - fn + 1) * sizeof(WCHAR));
memcpy(p, fn, (f - fn) * sizeof(WCHAR));
p[f - fn] = 0;
b = GetVolumePathNameW(p, volpath, volpathlen);
free(p);
return b;
}
static bool show_reflink_paste(const wstring& path) {
HDROP hdrop;
HANDLE lh;
ULONG num_files;
WCHAR fn[MAX_PATH], volpath1[255], volpath2[255];
if (!IsClipboardFormatAvailable(CF_HDROP))
return false;
if (!GetVolumePathNameW(path.c_str(), volpath1, sizeof(volpath1) / sizeof(WCHAR)))
return false;
if (!OpenClipboard(nullptr))
return false;
hdrop = (HDROP)GetClipboardData(CF_HDROP);
if (!hdrop) {
CloseClipboard();
return false;
}
lh = GlobalLock(hdrop);
if (!lh) {
CloseClipboard();
return false;
}
num_files = DragQueryFileW(hdrop, 0xFFFFFFFF, nullptr, 0);
if (num_files == 0) {
GlobalUnlock(lh);
CloseClipboard();
return false;
}
if (!DragQueryFileW(hdrop, 0, fn, sizeof(fn) / sizeof(WCHAR))) {
GlobalUnlock(lh);
CloseClipboard();
return false;
}
if (!get_volume_path_parent(fn, volpath2, sizeof(volpath2) / sizeof(WCHAR))) {
GlobalUnlock(lh);
CloseClipboard();
return false;
}
GlobalUnlock(lh);
CloseClipboard();
return !wcscmp(volpath1, volpath2);
}
// The code for putting an icon against a menu item comes from:
// 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
static void InitBitmapInfo(BITMAPINFO* pbmi, ULONG cbInfo, LONG cx, LONG cy, WORD bpp) {
ZeroMemory(pbmi, cbInfo);
pbmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
pbmi->bmiHeader.biPlanes = 1;
pbmi->bmiHeader.biCompression = BI_RGB;
pbmi->bmiHeader.biWidth = cx;
pbmi->bmiHeader.biHeight = cy;
pbmi->bmiHeader.biBitCount = bpp;
}
static HRESULT Create32BitHBITMAP(HDC hdc, const SIZE *psize, void **ppvBits, HBITMAP* phBmp) {
BITMAPINFO bmi;
HDC hdcUsed;
*phBmp = nullptr;
InitBitmapInfo(&bmi, sizeof(bmi), psize->cx, psize->cy, 32);
hdcUsed = hdc ? hdc : GetDC(nullptr);
if (hdcUsed) {
*phBmp = CreateDIBSection(hdcUsed, &bmi, DIB_RGB_COLORS, ppvBits, nullptr, 0);
if (hdc != hdcUsed)
ReleaseDC(nullptr, hdcUsed);
}
return !*phBmp ? E_OUTOFMEMORY : S_OK;
}
void BtrfsContextMenu::get_uac_icon() {
IWICImagingFactory* factory = nullptr;
IWICBitmap* bitmap;
HRESULT hr;
#ifdef __REACTOS__
hr = CoCreateInstance(CLSID_WICImagingFactory, nullptr, CLSCTX_INPROC_SERVER, IID_IWICImagingFactory, (void **)&factory);
#else
hr = CoCreateInstance(CLSID_WICImagingFactory, nullptr, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&factory));
#endif
if (SUCCEEDED(hr)) {
HANDLE icon;
// We can't use IDI_SHIELD, as that will only give us the full-size icon
icon = LoadImageW(GetModuleHandleW(L"user32.dll"), MAKEINTRESOURCEW(106)/* UAC shield */, IMAGE_ICON,
GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON), LR_DEFAULTCOLOR);
hr = factory->CreateBitmapFromHICON((HICON)icon, &bitmap);
if (SUCCEEDED(hr)) {
UINT cx, cy;
hr = bitmap->GetSize(&cx, &cy);
if (SUCCEEDED(hr)) {
SIZE sz;
BYTE* buf;
sz.cx = (int)cx;
sz.cy = -(int)cy;
hr = Create32BitHBITMAP(nullptr, &sz, (void**)&buf, &uacicon);
if (SUCCEEDED(hr)) {
UINT stride = (UINT)(cx * sizeof(DWORD));
UINT buflen = cy * stride;
bitmap->CopyPixels(nullptr, stride, buflen, buf);
}
}
bitmap->Release();
}
factory->Release();
}
}
HRESULT __stdcall BtrfsContextMenu::QueryContextMenu(HMENU hmenu, UINT indexMenu, UINT idCmdFirst, UINT idCmdLast, UINT uFlags) {
wstring str;
ULONG entries = 0;
if (ignore)
return E_INVALIDARG;
if (uFlags & CMF_DEFAULTONLY)
return S_OK;
if (!bg) {
if (allow_snapshot) {
if (load_string(module, IDS_CREATE_SNAPSHOT, str) == 0)
return E_FAIL;
if (!InsertMenuW(hmenu, indexMenu, MF_BYPOSITION, idCmdFirst, str.c_str()))
return E_FAIL;
entries = 1;
}
if (idCmdFirst + entries <= idCmdLast) {
MENUITEMINFOW mii;
if (load_string(module, IDS_SEND_SUBVOL, str) == 0)
return E_FAIL;
if (!uacicon)
get_uac_icon();
memset(&mii, 0, sizeof(MENUITEMINFOW));
mii.cbSize = sizeof(MENUITEMINFOW);
mii.fMask = MIIM_STRING | MIIM_ID | MIIM_BITMAP;
mii.dwTypeData = (WCHAR*)str.c_str();
mii.wID = idCmdFirst + entries;
mii.hbmpItem = uacicon;
if (!InsertMenuItemW(hmenu, indexMenu + entries, true, &mii))
return E_FAIL;
entries++;
}
} else {
if (load_string(module, IDS_NEW_SUBVOL, str) == 0)
return E_FAIL;
if (!InsertMenuW(hmenu, indexMenu, MF_BYPOSITION, idCmdFirst, str.c_str()))
return E_FAIL;
entries = 1;
if (idCmdFirst + 1 <= idCmdLast) {
MENUITEMINFOW mii;
if (load_string(module, IDS_RECV_SUBVOL, str) == 0)
return E_FAIL;
if (!uacicon)
get_uac_icon();
memset(&mii, 0, sizeof(MENUITEMINFOW));
mii.cbSize = sizeof(MENUITEMINFOW);
mii.fMask = MIIM_STRING | MIIM_ID | MIIM_BITMAP;
mii.dwTypeData = (WCHAR*)str.c_str();
mii.wID = idCmdFirst + 1;
mii.hbmpItem = uacicon;
if (!InsertMenuItemW(hmenu, indexMenu + 1, true, &mii))
return E_FAIL;
entries++;
}
if (idCmdFirst + 2 <= idCmdLast && show_reflink_paste(path)) {
if (load_string(module, IDS_REFLINK_PASTE, str) == 0)
return E_FAIL;
if (!InsertMenuW(hmenu, indexMenu + 2, MF_BYPOSITION, idCmdFirst + 2, str.c_str()))
return E_FAIL;
entries++;
}
}
return MAKE_HRESULT(SEVERITY_SUCCESS, 0, entries);
}
static void path_remove_file(wstring& path) {
size_t bs = path.rfind(L"\\");
if (bs == string::npos)
return;
if (bs == path.find(L"\\")) { // only one backslash
path = path.substr(0, bs + 1);
return;
}
path = path.substr(0, bs);
}
static void path_strip_path(wstring& path) {
size_t bs = path.rfind(L"\\");
if (bs == string::npos) {
path = L"";
return;
}
path = path.substr(bs + 1);
}
static void create_snapshot(HWND hwnd, const wstring& fn) {
win_handle h;
NTSTATUS Status;
IO_STATUS_BLOCK iosb;
btrfs_get_file_ids bgfi;
h = CreateFileW(fn.c_str(), FILE_TRAVERSE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
if (h != INVALID_HANDLE_VALUE) {
Status = NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_FILE_IDS, nullptr, 0, &bgfi, sizeof(btrfs_get_file_ids));
if (NT_SUCCESS(Status) && bgfi.inode == 0x100 && !bgfi.top) {
wstring subvolname, parpath, searchpath, temp1, name, nameorig;
win_handle h2;
WIN32_FIND_DATAW wfd;
SYSTEMTIME time;
parpath = fn;
path_remove_file(parpath);
subvolname = fn;
path_strip_path(subvolname);
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);
if (h2 == INVALID_HANDLE_VALUE)
throw last_error(GetLastError());
if (!load_string(module, IDS_SNAPSHOT_FILENAME, temp1))
throw last_error(GetLastError());
GetLocalTime(&time);
wstring_sprintf(name, temp1, subvolname.c_str(), time.wYear, time.wMonth, time.wDay);
nameorig = name;
searchpath = parpath + L"\\" + name;
fff_handle fff = FindFirstFileW(searchpath.c_str(), &wfd);
if (fff != INVALID_HANDLE_VALUE) {
ULONG num = 2;
do {
#ifndef __REACTOS__
name = nameorig + L" (" + to_wstring(num) + L")";
#else
{
WCHAR buffer[32];
swprintf(buffer, L"%d", num);
name = nameorig + L" (" + buffer + L")";
}
#endif
searchpath = parpath + L"\\" + name;
fff = FindFirstFileW(searchpath.c_str(), &wfd);
num++;
} while (fff != INVALID_HANDLE_VALUE);
}
size_t namelen = name.length() * sizeof(WCHAR);
auto bcs = (btrfs_create_snapshot*)malloc(sizeof(btrfs_create_snapshot) - 1 + namelen);
bcs->readonly = false;
bcs->posix = false;
bcs->subvol = h;
bcs->namelen = (uint16_t)namelen;
memcpy(bcs->name, name.c_str(), namelen);
Status = NtFsControlFile(h2, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_CREATE_SNAPSHOT, bcs,
(ULONG)(sizeof(btrfs_create_snapshot) - 1 + namelen), nullptr, 0);
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
}
} else
throw last_error(GetLastError());
}
static uint64_t __inline sector_align(uint64_t n, uint64_t a) {
if (n & (a - 1))
n = (n + a) & ~(a - 1);
return n;
}
void BtrfsContextMenu::reflink_copy(HWND hwnd, const WCHAR* fn, const WCHAR* dir) {
win_handle source, dest;
WCHAR* name, volpath1[255], volpath2[255];
wstring dirw, newpath;
FILE_BASIC_INFO fbi;
FILETIME atime, mtime;
btrfs_inode_info bii;
btrfs_set_inode_info bsii;
ULONG bytesret;
NTSTATUS Status;
IO_STATUS_BLOCK iosb;
btrfs_set_xattr bsxa;
// Thanks to 0xbadfca11, whose version of reflink for Windows provided a few pointers on what
// to do here - https://github.com/0xbadfca11/reflink
name = PathFindFileNameW(fn);
dirw = dir;
if (dir[0] != 0 && dir[wcslen(dir) - 1] != '\\')
dirw += L"\\";
newpath = dirw;
newpath += name;
if (!get_volume_path_parent(fn, volpath1, sizeof(volpath1) / sizeof(WCHAR)))
throw last_error(GetLastError());
if (!GetVolumePathNameW(dir, volpath2, sizeof(volpath2) / sizeof(WCHAR)))
throw last_error(GetLastError());
if (wcscmp(volpath1, volpath2)) // different filesystems
throw string_error(IDS_CANT_REFLINK_DIFFERENT_FS);
source = CreateFileW(fn, GENERIC_READ | FILE_TRAVERSE, FILE_SHARE_READ, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_OPEN_REPARSE_POINT, nullptr);
if (source == INVALID_HANDLE_VALUE)
throw last_error(GetLastError());
Status = NtFsControlFile(source, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_INODE_INFO, nullptr, 0, &bii, sizeof(btrfs_inode_info));
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
// if subvol, do snapshot instead
if (bii.inode == SUBVOL_ROOT_INODE) {
btrfs_create_snapshot* bcs;
win_handle dirh;
wstring destname, search;
WIN32_FIND_DATAW wfd;
int num = 2;
dirh = CreateFileW(dir, FILE_ADD_SUBDIRECTORY, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
if (dirh == INVALID_HANDLE_VALUE)
throw last_error(GetLastError());
search = dirw;
search += name;
destname = name;
fff_handle fff = FindFirstFileW(search.c_str(), &wfd);
if (fff != INVALID_HANDLE_VALUE) {
do {
wstringstream ss;
ss << name;
ss << L" (";
ss << num;
ss << L")";
destname = ss.str();
search = dirw + destname;
fff = FindFirstFileW(search.c_str(), &wfd);
num++;
} while (fff != INVALID_HANDLE_VALUE);
}
bcs = (btrfs_create_snapshot*)malloc(sizeof(btrfs_create_snapshot) - sizeof(WCHAR) + (destname.length() * sizeof(WCHAR)));
bcs->subvol = source;
bcs->namelen = (uint16_t)(destname.length() * sizeof(WCHAR));
memcpy(bcs->name, destname.c_str(), destname.length() * sizeof(WCHAR));
Status = NtFsControlFile(dirh, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_CREATE_SNAPSHOT, bcs,
(ULONG)(sizeof(btrfs_create_snapshot) - sizeof(WCHAR) + bcs->namelen), nullptr, 0);
free(bcs);
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
return;
}
Status = NtQueryInformationFile(source, &iosb, &fbi, sizeof(FILE_BASIC_INFO), FileBasicInformation);
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
if (bii.type == BTRFS_TYPE_CHARDEV || bii.type == BTRFS_TYPE_BLOCKDEV || bii.type == BTRFS_TYPE_FIFO || bii.type == BTRFS_TYPE_SOCKET) {
win_handle dirh;
btrfs_mknod* bmn;
dirh = CreateFileW(dir, FILE_ADD_FILE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
if (dirh == INVALID_HANDLE_VALUE)
throw last_error(GetLastError());
size_t bmnsize = offsetof(btrfs_mknod, name[0]) + (wcslen(name) * sizeof(WCHAR));
bmn = (btrfs_mknod*)malloc(bmnsize);
bmn->inode = 0;
bmn->type = bii.type;
bmn->st_rdev = bii.st_rdev;
bmn->namelen = (uint16_t)(wcslen(name) * sizeof(WCHAR));
memcpy(bmn->name, name, bmn->namelen);
Status = NtFsControlFile(dirh, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_MKNOD, bmn, (ULONG)bmnsize, nullptr, 0);
if (!NT_SUCCESS(Status)) {
free(bmn);
throw ntstatus_error(Status);
}
free(bmn);
dest = CreateFileW(newpath.c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, nullptr, OPEN_EXISTING, 0, nullptr);
} else if (fbi.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
if (CreateDirectoryExW(fn, newpath.c_str(), nullptr))
dest = CreateFileW(newpath.c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
else
dest = INVALID_HANDLE_VALUE;
} else
dest = CreateFileW(newpath.c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, nullptr, CREATE_NEW, 0, source);
if (dest == INVALID_HANDLE_VALUE) {
int num = 2;
if (GetLastError() != ERROR_FILE_EXISTS && GetLastError() != ERROR_ALREADY_EXISTS && wcscmp(fn, newpath.c_str()))
throw last_error(GetLastError());
do {
WCHAR* ext;
wstringstream ss;
ext = PathFindExtensionW(fn);
ss << dirw;
if (*ext == 0) {
ss << name;
ss << L" (";
ss << num;
ss << L")";
} else {
wstring namew = name;
ss << namew.substr(0, ext - name);
ss << L" (";
ss << num;
ss << L")";
ss << ext;
}
newpath = ss.str();
if (fbi.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
if (CreateDirectoryExW(fn, newpath.c_str(), nullptr))
dest = CreateFileW(newpath.c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
else
dest = INVALID_HANDLE_VALUE;
} else
dest = CreateFileW(newpath.c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, nullptr, CREATE_NEW, 0, source);
if (dest == INVALID_HANDLE_VALUE) {
if (GetLastError() != ERROR_FILE_EXISTS && GetLastError() != ERROR_ALREADY_EXISTS)
throw last_error(GetLastError());
num++;
} else
break;
} while (true);
}
try {
memset(&bsii, 0, sizeof(btrfs_set_inode_info));
bsii.flags_changed = true;
bsii.flags = bii.flags;
if (bii.flags & BTRFS_INODE_COMPRESS) {
bsii.compression_type_changed = true;
bsii.compression_type = bii.compression_type;
}
Status = NtFsControlFile(dest, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_SET_INODE_INFO, &bsii, sizeof(btrfs_set_inode_info), nullptr, 0);
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
if (fbi.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
if (!(fbi.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
fff_handle h;
WIN32_FIND_DATAW fff;
wstring qs;
qs = fn;
qs += L"\\*";
h = FindFirstFileW(qs.c_str(), &fff);
if (h != INVALID_HANDLE_VALUE) {
do {
wstring fn2;
if (fff.cFileName[0] == '.' && (fff.cFileName[1] == 0 || (fff.cFileName[1] == '.' && fff.cFileName[2] == 0)))
continue;
fn2 = fn;
fn2 += L"\\";
fn2 += fff.cFileName;
reflink_copy(hwnd, fn2.c_str(), newpath.c_str());
} while (FindNextFileW(h, &fff));
}
}
// CreateDirectoryExW also copies streams, no need to do it here
} else {
if (fbi.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
reparse_header rh;
uint8_t* rp;
if (!DeviceIoControl(source, FSCTL_GET_REPARSE_POINT, nullptr, 0, &rh, sizeof(reparse_header), &bytesret, nullptr)) {
if (GetLastError() != ERROR_MORE_DATA)
throw last_error(GetLastError());
}
size_t rplen = sizeof(reparse_header) + rh.ReparseDataLength;
rp = (uint8_t*)malloc(rplen);
if (!DeviceIoControl(source, FSCTL_GET_REPARSE_POINT, nullptr, 0, rp, (ULONG)rplen, &bytesret, nullptr))
throw last_error(GetLastError());
if (!DeviceIoControl(dest, FSCTL_SET_REPARSE_POINT, rp, (ULONG)rplen, nullptr, 0, &bytesret, nullptr))
throw last_error(GetLastError());
free(rp);
} else {
FILE_STANDARD_INFO fsi;
FILE_END_OF_FILE_INFO feofi;
FSCTL_GET_INTEGRITY_INFORMATION_BUFFER fgiib;
FSCTL_SET_INTEGRITY_INFORMATION_BUFFER fsiib;
DUPLICATE_EXTENTS_DATA ded;
uint64_t offset, alloc_size;
ULONG maxdup;
Status = NtQueryInformationFile(source, &iosb, &fsi, sizeof(FILE_STANDARD_INFO), FileStandardInformation);
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
if (!DeviceIoControl(source, FSCTL_GET_INTEGRITY_INFORMATION, nullptr, 0, &fgiib, sizeof(FSCTL_GET_INTEGRITY_INFORMATION_BUFFER), &bytesret, nullptr))
throw last_error(GetLastError());
if (fbi.FileAttributes & FILE_ATTRIBUTE_SPARSE_FILE) {
if (!DeviceIoControl(dest, FSCTL_SET_SPARSE, nullptr, 0, nullptr, 0, &bytesret, nullptr))
throw last_error(GetLastError());
}
fsiib.ChecksumAlgorithm = fgiib.ChecksumAlgorithm;
fsiib.Reserved = 0;
fsiib.Flags = fgiib.Flags;
if (!DeviceIoControl(dest, FSCTL_SET_INTEGRITY_INFORMATION, &fsiib, sizeof(FSCTL_SET_INTEGRITY_INFORMATION_BUFFER), nullptr, 0, &bytesret, nullptr))
throw last_error(GetLastError());
feofi.EndOfFile = fsi.EndOfFile;
Status = NtSetInformationFile(dest, &iosb, &feofi, sizeof(FILE_END_OF_FILE_INFO), FileEndOfFileInformation);
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
ded.FileHandle = source;
maxdup = 0xffffffff - fgiib.ClusterSizeInBytes + 1;
alloc_size = sector_align(fsi.EndOfFile.QuadPart, fgiib.ClusterSizeInBytes);
offset = 0;
while (offset < alloc_size) {
ded.SourceFileOffset.QuadPart = ded.TargetFileOffset.QuadPart = offset;
ded.ByteCount.QuadPart = maxdup < (alloc_size - offset) ? maxdup : (alloc_size - offset);
if (!DeviceIoControl(dest, FSCTL_DUPLICATE_EXTENTS_TO_FILE, &ded, sizeof(DUPLICATE_EXTENTS_DATA), nullptr, 0, &bytesret, nullptr))
throw last_error(GetLastError());
offset += ded.ByteCount.QuadPart;
}
}
ULONG streambufsize = 0;
vector<char> streambuf;
do {
streambufsize += 0x1000;
streambuf.resize(streambufsize);
memset(streambuf.data(), 0, streambufsize);
Status = NtQueryInformationFile(source, &iosb, streambuf.data(), streambufsize, FileStreamInformation);
} while (Status == STATUS_BUFFER_OVERFLOW);
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
auto fsi = reinterpret_cast<FILE_STREAM_INFORMATION*>(streambuf.data());
while (true) {
if (fsi->StreamNameLength > 0) {
wstring sn = wstring(fsi->StreamName, fsi->StreamNameLength / sizeof(WCHAR));
if (sn != L"::$DATA" && sn.length() > 6 && sn.substr(sn.length() - 6, 6) == L":$DATA") {
win_handle stream;
uint8_t* data = nullptr;
auto stream_size = (uint16_t)fsi->StreamSize.QuadPart;
if (stream_size > 0) {
wstring fn2;
fn2 = fn;
fn2 += sn;
stream = CreateFileW(fn2.c_str(), GENERIC_READ, 0, nullptr, OPEN_EXISTING, 0, nullptr);
if (stream == INVALID_HANDLE_VALUE)
throw last_error(GetLastError());
// We can get away with this because our streams are guaranteed to be below 64 KB -
// don't do this on NTFS!
data = (uint8_t*)malloc(stream_size);
if (!ReadFile(stream, data, stream_size, &bytesret, nullptr)) {
free(data);
throw last_error(GetLastError());
}
}
stream = CreateFileW((newpath + sn).c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, nullptr, CREATE_NEW, 0, nullptr);
if (stream == INVALID_HANDLE_VALUE) {
if (data) free(data);
throw last_error(GetLastError());
}
if (data) {
if (!WriteFile(stream, data, stream_size, &bytesret, nullptr)) {
free(data);
throw last_error(GetLastError());
}
free(data);
}
}
}
if (fsi->NextEntryOffset == 0)
break;
fsi = reinterpret_cast<FILE_STREAM_INFORMATION*>(reinterpret_cast<char*>(fsi) + fsi->NextEntryOffset);
}
}
atime.dwLowDateTime = fbi.LastAccessTime.LowPart;
atime.dwHighDateTime = fbi.LastAccessTime.HighPart;
mtime.dwLowDateTime = fbi.LastWriteTime.LowPart;
mtime.dwHighDateTime = fbi.LastWriteTime.HighPart;
SetFileTime(dest, nullptr, &atime, &mtime);
Status = NtFsControlFile(source, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_XATTRS, nullptr, 0, &bsxa, sizeof(btrfs_set_xattr));
if (Status == STATUS_BUFFER_OVERFLOW || (NT_SUCCESS(Status) && bsxa.valuelen > 0)) {
ULONG xalen = 0;
btrfs_set_xattr *xa = nullptr, *xa2;
do {
xalen += 1024;
if (xa) free(xa);
xa = (btrfs_set_xattr*)malloc(xalen);
Status = NtFsControlFile(source, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_XATTRS, nullptr, 0, xa, xalen);
} while (Status == STATUS_BUFFER_OVERFLOW);
if (!NT_SUCCESS(Status)) {
free(xa);
throw ntstatus_error(Status);
}
xa2 = xa;
while (xa2->valuelen > 0) {
Status = NtFsControlFile(dest, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_SET_XATTR, xa2,
(ULONG)(offsetof(btrfs_set_xattr, data[0]) + xa2->namelen + xa2->valuelen), nullptr, 0);
if (!NT_SUCCESS(Status)) {
free(xa);
throw ntstatus_error(Status);
}
xa2 = (btrfs_set_xattr*)&xa2->data[xa2->namelen + xa2->valuelen];
}
free(xa);
} else if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
} catch (...) {
FILE_DISPOSITION_INFO fdi;
fdi.DeleteFile = true;
Status = NtSetInformationFile(dest, &iosb, &fdi, sizeof(FILE_DISPOSITION_INFO), FileDispositionInformation);
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
throw;
}
}
HRESULT __stdcall BtrfsContextMenu::InvokeCommand(LPCMINVOKECOMMANDINFO picia) {
LPCMINVOKECOMMANDINFOEX pici = (LPCMINVOKECOMMANDINFOEX)picia;
try {
if (ignore)
return E_INVALIDARG;
if (!bg) {
if ((IS_INTRESOURCE(pici->lpVerb) && allow_snapshot && pici->lpVerb == 0) || (!IS_INTRESOURCE(pici->lpVerb) && !strcmp(pici->lpVerb, SNAPSHOT_VERBA))) {
UINT num_files, i;
WCHAR fn[MAX_PATH];
if (!stgm_set)
return E_FAIL;
num_files = DragQueryFileW((HDROP)stgm.hGlobal, 0xFFFFFFFF, nullptr, 0);
if (num_files == 0)
return E_FAIL;
for (i = 0; i < num_files; i++) {
if (DragQueryFileW((HDROP)stgm.hGlobal, i, fn, sizeof(fn) / sizeof(WCHAR))) {
create_snapshot(pici->hwnd, fn);
}
}
return S_OK;
} else if ((IS_INTRESOURCE(pici->lpVerb) && ((allow_snapshot && (ULONG_PTR)pici->lpVerb == 1) || (!allow_snapshot && (ULONG_PTR)pici->lpVerb == 0))) ||
(!IS_INTRESOURCE(pici->lpVerb) && !strcmp(pici->lpVerb, SEND_VERBA))) {
UINT num_files, i;
WCHAR dll[MAX_PATH], fn[MAX_PATH];
wstring t;
SHELLEXECUTEINFOW sei;
GetModuleFileNameW(module, dll, sizeof(dll) / sizeof(WCHAR));
if (!stgm_set)
return E_FAIL;
num_files = DragQueryFileW((HDROP)stgm.hGlobal, 0xFFFFFFFF, nullptr, 0);
if (num_files == 0)
return E_FAIL;
for (i = 0; i < num_files; i++) {
if (DragQueryFileW((HDROP)stgm.hGlobal, i, fn, sizeof(fn) / sizeof(WCHAR))) {
t = L"\"";
t += dll;
t += L"\",SendSubvolGUI ";
t += fn;
RtlZeroMemory(&sei, sizeof(sei));
sei.cbSize = sizeof(sei);
sei.hwnd = pici->hwnd;
sei.lpVerb = L"runas";
sei.lpFile = L"rundll32.exe";
sei.lpParameters = t.c_str();
sei.nShow = SW_SHOW;
sei.fMask = SEE_MASK_NOCLOSEPROCESS;
if (!ShellExecuteExW(&sei))
throw last_error(GetLastError());
WaitForSingleObject(sei.hProcess, INFINITE);
CloseHandle(sei.hProcess);
}
}
return S_OK;
}
} else {
if ((IS_INTRESOURCE(pici->lpVerb) && (ULONG_PTR)pici->lpVerb == 0) || (!IS_INTRESOURCE(pici->lpVerb) && !strcmp(pici->lpVerb, NEW_SUBVOL_VERBA))) {
win_handle h;
IO_STATUS_BLOCK iosb;
NTSTATUS Status;
wstring name, nameorig, searchpath;
btrfs_create_subvol* bcs;
WIN32_FIND_DATAW wfd;
if (!load_string(module, IDS_NEW_SUBVOL_FILENAME, name))
throw last_error(GetLastError());
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);
if (h == INVALID_HANDLE_VALUE)
throw last_error(GetLastError());
searchpath = path + L"\\" + name;
nameorig = name;
{
fff_handle fff = FindFirstFileW(searchpath.c_str(), &wfd);
if (fff != INVALID_HANDLE_VALUE) {
ULONG num = 2;
do {
#ifndef __REACTOS__
name = nameorig + L" (" + to_wstring(num) + L")";
#else
{
WCHAR buffer[32];
swprintf(buffer, L"%d", num);
name = nameorig + L" (" + buffer + L")";
}
#endif
searchpath = path + L"\\" + name;
fff = FindFirstFileW(searchpath.c_str(), &wfd);
num++;
} while (fff != INVALID_HANDLE_VALUE);
}
}
size_t bcslen = offsetof(btrfs_create_subvol, name[0]) + (name.length() * sizeof(WCHAR));
bcs = (btrfs_create_subvol*)malloc(bcslen);
bcs->readonly = false;
bcs->posix = false;
bcs->namelen = (uint16_t)(name.length() * sizeof(WCHAR));
memcpy(bcs->name, name.c_str(), name.length() * sizeof(WCHAR));
Status = NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_CREATE_SUBVOL, bcs, (ULONG)bcslen, nullptr, 0);
free(bcs);
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
return S_OK;
} else if ((IS_INTRESOURCE(pici->lpVerb) && (ULONG_PTR)pici->lpVerb == 1) || (!IS_INTRESOURCE(pici->lpVerb) && !strcmp(pici->lpVerb, RECV_VERBA))) {
WCHAR dll[MAX_PATH];
wstring t;
SHELLEXECUTEINFOW sei;
GetModuleFileNameW(module, dll, sizeof(dll) / sizeof(WCHAR));
t = L"\"";
t += dll;
t += L"\",RecvSubvolGUI ";
t += path;
RtlZeroMemory(&sei, sizeof(sei));
sei.cbSize = sizeof(sei);
sei.hwnd = pici->hwnd;
sei.lpVerb = L"runas";
sei.lpFile = L"rundll32.exe";
sei.lpParameters = t.c_str();
sei.nShow = SW_SHOW;
sei.fMask = SEE_MASK_NOCLOSEPROCESS;
if (!ShellExecuteExW(&sei))
throw last_error(GetLastError());
WaitForSingleObject(sei.hProcess, INFINITE);
CloseHandle(sei.hProcess);
return S_OK;
} else if ((IS_INTRESOURCE(pici->lpVerb) && (ULONG_PTR)pici->lpVerb == 2) || (!IS_INTRESOURCE(pici->lpVerb) && !strcmp(pici->lpVerb, REFLINK_VERBA))) {
HDROP hdrop;
if (!IsClipboardFormatAvailable(CF_HDROP))
return S_OK;
if (!OpenClipboard(pici->hwnd))
throw last_error(GetLastError());
try {
hdrop = (HDROP)GetClipboardData(CF_HDROP);
if (hdrop) {
HANDLE lh;
lh = GlobalLock(hdrop);
if (lh) {
try {
ULONG num_files, i;
WCHAR fn[MAX_PATH];
num_files = DragQueryFileW(hdrop, 0xFFFFFFFF, nullptr, 0);
for (i = 0; i < num_files; i++) {
if (DragQueryFileW(hdrop, i, fn, sizeof(fn) / sizeof(WCHAR))) {
reflink_copy(pici->hwnd, fn, pici->lpDirectoryW);
}
}
} catch (...) {
GlobalUnlock(lh);
throw;
}
GlobalUnlock(lh);
}
}
} catch (...) {
CloseClipboard();
throw;
}
CloseClipboard();
return S_OK;
}
}
} catch (const exception& e) {
error_message(pici->hwnd, e.what());
}
return E_FAIL;
}
HRESULT __stdcall BtrfsContextMenu::GetCommandString(UINT_PTR idCmd, UINT uFlags, UINT* pwReserved, LPSTR pszName, UINT cchMax) {
if (ignore)
return E_INVALIDARG;
if (idCmd != 0)
return E_INVALIDARG;
if (!bg) {
if (idCmd == 0) {
switch (uFlags) {
case GCS_HELPTEXTA:
if (LoadStringA(module, IDS_CREATE_SNAPSHOT_HELP_TEXT, pszName, cchMax))
return S_OK;
else
return E_FAIL;
case GCS_HELPTEXTW:
if (LoadStringW(module, IDS_CREATE_SNAPSHOT_HELP_TEXT, (LPWSTR)pszName, cchMax))
return S_OK;
else
return E_FAIL;
case GCS_VALIDATEA:
case GCS_VALIDATEW:
return S_OK;
case GCS_VERBA:
return StringCchCopyA(pszName, cchMax, SNAPSHOT_VERBA);
case GCS_VERBW:
return StringCchCopyW((STRSAFE_LPWSTR)pszName, cchMax, SNAPSHOT_VERBW);
default:
return E_INVALIDARG;
}
} else if (idCmd == 1) {
switch (uFlags) {
case GCS_HELPTEXTA:
if (LoadStringA(module, IDS_SEND_SUBVOL_HELP, pszName, cchMax))
return S_OK;
else
return E_FAIL;
case GCS_HELPTEXTW:
if (LoadStringW(module, IDS_SEND_SUBVOL_HELP, (LPWSTR)pszName, cchMax))
return S_OK;
else
return E_FAIL;
case GCS_VALIDATEA:
case GCS_VALIDATEW:
return S_OK;
case GCS_VERBA:
return StringCchCopyA(pszName, cchMax, SEND_VERBA);
case GCS_VERBW:
return StringCchCopyW((STRSAFE_LPWSTR)pszName, cchMax, SEND_VERBW);
default:
return E_INVALIDARG;
}
} else
return E_INVALIDARG;
} else {
if (idCmd == 0) {
switch (uFlags) {
case GCS_HELPTEXTA:
if (LoadStringA(module, IDS_NEW_SUBVOL_HELP_TEXT, pszName, cchMax))
return S_OK;
else
return E_FAIL;
case GCS_HELPTEXTW:
if (LoadStringW(module, IDS_NEW_SUBVOL_HELP_TEXT, (LPWSTR)pszName, cchMax))
return S_OK;
else
return E_FAIL;
case GCS_VALIDATEA:
case GCS_VALIDATEW:
return S_OK;
case GCS_VERBA:
return StringCchCopyA(pszName, cchMax, NEW_SUBVOL_VERBA);
case GCS_VERBW:
return StringCchCopyW((STRSAFE_LPWSTR)pszName, cchMax, NEW_SUBVOL_VERBW);
default:
return E_INVALIDARG;
}
} else if (idCmd == 1) {
switch (uFlags) {
case GCS_HELPTEXTA:
if (LoadStringA(module, IDS_RECV_SUBVOL_HELP, pszName, cchMax))
return S_OK;
else
return E_FAIL;
case GCS_HELPTEXTW:
if (LoadStringW(module, IDS_RECV_SUBVOL_HELP, (LPWSTR)pszName, cchMax))
return S_OK;
else
return E_FAIL;
case GCS_VALIDATEA:
case GCS_VALIDATEW:
return S_OK;
case GCS_VERBA:
return StringCchCopyA(pszName, cchMax, RECV_VERBA);
case GCS_VERBW:
return StringCchCopyW((STRSAFE_LPWSTR)pszName, cchMax, RECV_VERBW);
default:
return E_INVALIDARG;
}
} else if (idCmd == 2) {
switch (uFlags) {
case GCS_HELPTEXTA:
if (LoadStringA(module, IDS_REFLINK_PASTE_HELP, pszName, cchMax))
return S_OK;
else
return E_FAIL;
case GCS_HELPTEXTW:
if (LoadStringW(module, IDS_REFLINK_PASTE_HELP, (LPWSTR)pszName, cchMax))
return S_OK;
else
return E_FAIL;
case GCS_VALIDATEA:
case GCS_VALIDATEW:
return S_OK;
case GCS_VERBA:
return StringCchCopyA(pszName, cchMax, REFLINK_VERBA);
case GCS_VERBW:
return StringCchCopyW((STRSAFE_LPWSTR)pszName, cchMax, REFLINK_VERBW);
default:
return E_INVALIDARG;
}
} else
return E_INVALIDARG;
}
}
static void reflink_copy2(const wstring& srcfn, const wstring& destdir, const wstring& destname) {
win_handle source, dest;
FILE_BASIC_INFO fbi;
FILETIME atime, mtime;
btrfs_inode_info bii;
btrfs_set_inode_info bsii;
ULONG bytesret;
NTSTATUS Status;
IO_STATUS_BLOCK iosb;
btrfs_set_xattr bsxa;
source = CreateFileW(srcfn.c_str(), GENERIC_READ | FILE_TRAVERSE, FILE_SHARE_READ, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_OPEN_REPARSE_POINT, nullptr);
if (source == INVALID_HANDLE_VALUE)
throw last_error(GetLastError());
Status = NtFsControlFile(source, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_INODE_INFO, nullptr, 0, &bii, sizeof(btrfs_inode_info));
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
// if subvol, do snapshot instead
if (bii.inode == SUBVOL_ROOT_INODE) {
btrfs_create_snapshot* bcs;
win_handle dirh;
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);
if (dirh == INVALID_HANDLE_VALUE)
throw last_error(GetLastError());
size_t bcslen = offsetof(btrfs_create_snapshot, name[0]) + (destname.length() * sizeof(WCHAR));
bcs = (btrfs_create_snapshot*)malloc(bcslen);
bcs->subvol = source;
bcs->namelen = (uint16_t)(destname.length() * sizeof(WCHAR));
memcpy(bcs->name, destname.c_str(), destname.length() * sizeof(WCHAR));
Status = NtFsControlFile(dirh, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_CREATE_SNAPSHOT, bcs, (ULONG)bcslen, nullptr, 0);
if (!NT_SUCCESS(Status)) {
free(bcs);
throw ntstatus_error(Status);
}
free(bcs);
return;
}
Status = NtQueryInformationFile(source, &iosb, &fbi, sizeof(FILE_BASIC_INFO), FileBasicInformation);
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
if (bii.type == BTRFS_TYPE_CHARDEV || bii.type == BTRFS_TYPE_BLOCKDEV || bii.type == BTRFS_TYPE_FIFO || bii.type == BTRFS_TYPE_SOCKET) {
win_handle dirh;
btrfs_mknod* bmn;
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);
if (dirh == INVALID_HANDLE_VALUE)
throw last_error(GetLastError());
size_t bmnsize = offsetof(btrfs_mknod, name[0]) + (destname.length() * sizeof(WCHAR));
bmn = (btrfs_mknod*)malloc(bmnsize);
bmn->inode = 0;
bmn->type = bii.type;
bmn->st_rdev = bii.st_rdev;
bmn->namelen = (uint16_t)(destname.length() * sizeof(WCHAR));
memcpy(bmn->name, destname.c_str(), bmn->namelen);
Status = NtFsControlFile(dirh, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_MKNOD, bmn, (ULONG)bmnsize, nullptr, 0);
if (!NT_SUCCESS(Status)) {
free(bmn);
throw ntstatus_error(Status);
}
free(bmn);
dest = CreateFileW((destdir + destname).c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, nullptr, OPEN_EXISTING, 0, nullptr);
} else if (fbi.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
if (CreateDirectoryExW(srcfn.c_str(), (destdir + destname).c_str(), nullptr))
dest = CreateFileW((destdir + destname).c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
else
dest = INVALID_HANDLE_VALUE;
} else
dest = CreateFileW((destdir + destname).c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, nullptr, CREATE_NEW, 0, source);
if (dest == INVALID_HANDLE_VALUE)
throw last_error(GetLastError());
memset(&bsii, 0, sizeof(btrfs_set_inode_info));
bsii.flags_changed = true;
bsii.flags = bii.flags;
if (bii.flags & BTRFS_INODE_COMPRESS) {
bsii.compression_type_changed = true;
bsii.compression_type = bii.compression_type;
}
try {
Status = NtFsControlFile(dest, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_SET_INODE_INFO, &bsii, sizeof(btrfs_set_inode_info), nullptr, 0);
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
if (fbi.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
if (!(fbi.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
WIN32_FIND_DATAW fff;
wstring qs;
qs = srcfn;
qs += L"\\*";
fff_handle h = FindFirstFileW(qs.c_str(), &fff);
if (h != INVALID_HANDLE_VALUE) {
do {
wstring fn2;
if (fff.cFileName[0] == '.' && (fff.cFileName[1] == 0 || (fff.cFileName[1] == '.' && fff.cFileName[2] == 0)))
continue;
fn2 = srcfn;
fn2 += L"\\";
fn2 += fff.cFileName;
reflink_copy2(fn2, destdir + destname + L"\\", fff.cFileName);
} while (FindNextFileW(h, &fff));
}
}
// CreateDirectoryExW also copies streams, no need to do it here
} else {
if (fbi.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
reparse_header rh;
uint8_t* rp;
if (!DeviceIoControl(source, FSCTL_GET_REPARSE_POINT, nullptr, 0, &rh, sizeof(reparse_header), &bytesret, nullptr)) {
if (GetLastError() != ERROR_MORE_DATA)
throw last_error(GetLastError());
}
size_t rplen = sizeof(reparse_header) + rh.ReparseDataLength;
rp = (uint8_t*)malloc(rplen);
try {
if (!DeviceIoControl(source, FSCTL_GET_REPARSE_POINT, nullptr, 0, rp, (DWORD)rplen, &bytesret, nullptr))
throw last_error(GetLastError());
if (!DeviceIoControl(dest, FSCTL_SET_REPARSE_POINT, rp, (DWORD)rplen, nullptr, 0, &bytesret, nullptr))
throw last_error(GetLastError());
} catch (...) {
free(rp);
throw;
}
free(rp);
} else {
FILE_STANDARD_INFO fsi;
FILE_END_OF_FILE_INFO feofi;
FSCTL_GET_INTEGRITY_INFORMATION_BUFFER fgiib;
FSCTL_SET_INTEGRITY_INFORMATION_BUFFER fsiib;
DUPLICATE_EXTENTS_DATA ded;
uint64_t offset, alloc_size;
ULONG maxdup;
Status = NtQueryInformationFile(source, &iosb, &fsi, sizeof(FILE_STANDARD_INFO), FileStandardInformation);
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
if (!DeviceIoControl(source, FSCTL_GET_INTEGRITY_INFORMATION, nullptr, 0, &fgiib, sizeof(FSCTL_GET_INTEGRITY_INFORMATION_BUFFER), &bytesret, nullptr))
throw last_error(GetLastError());
if (fbi.FileAttributes & FILE_ATTRIBUTE_SPARSE_FILE) {
if (!DeviceIoControl(dest, FSCTL_SET_SPARSE, nullptr, 0, nullptr, 0, &bytesret, nullptr))
throw last_error(GetLastError());
}
fsiib.ChecksumAlgorithm = fgiib.ChecksumAlgorithm;
fsiib.Reserved = 0;
fsiib.Flags = fgiib.Flags;
if (!DeviceIoControl(dest, FSCTL_SET_INTEGRITY_INFORMATION, &fsiib, sizeof(FSCTL_SET_INTEGRITY_INFORMATION_BUFFER), nullptr, 0, &bytesret, nullptr))
throw last_error(GetLastError());
feofi.EndOfFile = fsi.EndOfFile;
Status = NtSetInformationFile(dest, &iosb, &feofi, sizeof(FILE_END_OF_FILE_INFO), FileEndOfFileInformation);
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
ded.FileHandle = source;
maxdup = 0xffffffff - fgiib.ClusterSizeInBytes + 1;
alloc_size = sector_align(fsi.EndOfFile.QuadPart, fgiib.ClusterSizeInBytes);
offset = 0;
while (offset < alloc_size) {
ded.SourceFileOffset.QuadPart = ded.TargetFileOffset.QuadPart = offset;
ded.ByteCount.QuadPart = maxdup < (alloc_size - offset) ? maxdup : (alloc_size - offset);
if (!DeviceIoControl(dest, FSCTL_DUPLICATE_EXTENTS_TO_FILE, &ded, sizeof(DUPLICATE_EXTENTS_DATA), nullptr, 0, &bytesret, nullptr))
throw last_error(GetLastError());
offset += ded.ByteCount.QuadPart;
}
}
ULONG streambufsize = 0;
vector<char> streambuf;
do {
streambufsize += 0x1000;
streambuf.resize(streambufsize);
memset(streambuf.data(), 0, streambufsize);
Status = NtQueryInformationFile(source, &iosb, streambuf.data(), streambufsize, FileStreamInformation);
} while (Status == STATUS_BUFFER_OVERFLOW);
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
auto fsi = reinterpret_cast<FILE_STREAM_INFORMATION*>(streambuf.data());
while (true) {
if (fsi->StreamNameLength > 0) {
wstring sn = wstring(fsi->StreamName, fsi->StreamNameLength / sizeof(WCHAR));
if (sn != L"::$DATA" && sn.length() > 6 && sn.substr(sn.length() - 6, 6) == L":$DATA") {
win_handle stream;
uint8_t* data = nullptr;
auto stream_size = (uint16_t)fsi->StreamSize.QuadPart;
if (stream_size > 0) {
wstring fn2;
fn2 = srcfn;
fn2 += sn;
stream = CreateFileW(fn2.c_str(), GENERIC_READ, 0, nullptr, OPEN_EXISTING, 0, nullptr);
if (stream == INVALID_HANDLE_VALUE)
throw last_error(GetLastError());
// We can get away with this because our streams are guaranteed to be below 64 KB -
// don't do this on NTFS!
data = (uint8_t*)malloc(stream_size);
if (!ReadFile(stream, data, stream_size, &bytesret, nullptr)) {
free(data);
throw last_error(GetLastError());
}
}
stream = CreateFileW((destdir + destname + sn).c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, nullptr, CREATE_NEW, 0, nullptr);
if (stream == INVALID_HANDLE_VALUE) {
if (data) free(data);
throw last_error(GetLastError());
}
if (data) {
if (!WriteFile(stream, data, stream_size, &bytesret, nullptr)) {
free(data);
throw last_error(GetLastError());
}
free(data);
}
}
}
if (fsi->NextEntryOffset == 0)
break;
fsi = reinterpret_cast<FILE_STREAM_INFORMATION*>(reinterpret_cast<char*>(fsi) + fsi->NextEntryOffset);
}
}
atime.dwLowDateTime = fbi.LastAccessTime.LowPart;
atime.dwHighDateTime = fbi.LastAccessTime.HighPart;
mtime.dwLowDateTime = fbi.LastWriteTime.LowPart;
mtime.dwHighDateTime = fbi.LastWriteTime.HighPart;
SetFileTime(dest, nullptr, &atime, &mtime);
Status = NtFsControlFile(source, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_XATTRS, nullptr, 0, &bsxa, sizeof(btrfs_set_xattr));
if (Status == STATUS_BUFFER_OVERFLOW || (NT_SUCCESS(Status) && bsxa.valuelen > 0)) {
ULONG xalen = 0;
btrfs_set_xattr *xa = nullptr, *xa2;
do {
xalen += 1024;
if (xa) free(xa);
xa = (btrfs_set_xattr*)malloc(xalen);
Status = NtFsControlFile(source, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_XATTRS, nullptr, 0, xa, xalen);
} while (Status == STATUS_BUFFER_OVERFLOW);
if (!NT_SUCCESS(Status)) {
free(xa);
throw ntstatus_error(Status);
}
xa2 = xa;
while (xa2->valuelen > 0) {
Status = NtFsControlFile(dest, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_SET_XATTR, xa2,
(ULONG)(offsetof(btrfs_set_xattr, data[0]) + xa2->namelen + xa2->valuelen), nullptr, 0);
if (!NT_SUCCESS(Status)) {
free(xa);
throw ntstatus_error(Status);
}
xa2 = (btrfs_set_xattr*)&xa2->data[xa2->namelen + xa2->valuelen];
}
free(xa);
} else if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
} catch (...) {
FILE_DISPOSITION_INFO fdi;
fdi.DeleteFile = true;
Status = NtSetInformationFile(dest, &iosb, &fdi, sizeof(FILE_DISPOSITION_INFO), FileDispositionInformation);
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
throw;
}
}
extern "C" void CALLBACK ReflinkCopyW(HWND hwnd, HINSTANCE hinst, LPWSTR lpszCmdLine, int nCmdShow) {
vector<wstring> args;
command_line_to_args(lpszCmdLine, args);
if (args.size() >= 2) {
bool dest_is_dir = false;
wstring dest = args[args.size() - 1], destdir, destname;
WCHAR volpath2[MAX_PATH];
{
win_handle destdirh = CreateFileW(dest.c_str(), FILE_TRAVERSE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
if (destdirh != INVALID_HANDLE_VALUE) {
BY_HANDLE_FILE_INFORMATION bhfi;
if (GetFileInformationByHandle(destdirh, &bhfi) && bhfi.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
dest_is_dir = true;
destdir = dest;
if (destdir.substr(destdir.length() - 1, 1) != L"\\")
destdir += L"\\";
}
}
}
if (!dest_is_dir) {
size_t found = dest.rfind(L"\\");
if (found == wstring::npos) {
destdir = L"";
destname = dest;
} else {
destdir = dest.substr(0, found);
destname = dest.substr(found + 1);
}
}
if (!GetVolumePathNameW(dest.c_str(), volpath2, sizeof(volpath2) / sizeof(WCHAR)))
return;
for (unsigned int i = 0; i < args.size() - 1; i++) {
WIN32_FIND_DATAW ffd;
fff_handle h = FindFirstFileW(args[i].c_str(), &ffd);
if (h != INVALID_HANDLE_VALUE) {
WCHAR volpath1[MAX_PATH];
wstring path = args[i];
size_t found = path.rfind(L"\\");
if (found == wstring::npos)
path = L"";
else
path = path.substr(0, found);
path += L"\\";
if (get_volume_path_parent(path.c_str(), volpath1, sizeof(volpath1) / sizeof(WCHAR))) {
if (!wcscmp(volpath1, volpath2)) {
do {
try {
reflink_copy2(path + ffd.cFileName, destdir, dest_is_dir ? ffd.cFileName : destname);
} catch (const exception& e) {
cerr << "Error: " << e.what() << endl;
}
} while (FindNextFileW(h, &ffd));
}
}
}
}
}
}