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reactos/dll/shellext/shellbtrfs/contextmenu.cpp
Pierre Schweitzer 2da53310a4
[SHELLBTRFS] Upgrade to 1.0.2 
CORE-14655
2018-05-26 10:58:48 +02:00

1799 lines
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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/>. */
#ifndef __REACTOS__
#define UNICODE
#endif
#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 <string>
#include <sstream>
#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;
// 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 = NULL;
return E_NOINTERFACE;
}
HRESULT __stdcall BtrfsContextMenu::Initialize(PCIDLIST_ABSOLUTE pidlFolder, IDataObject* pdtobj, HKEY hkeyProgID) {
HANDLE h;
IO_STATUS_BLOCK iosb;
btrfs_get_file_ids bgfi;
NTSTATUS Status;
if (!pidlFolder) {
FORMATETC format = { CF_HDROP, NULL, 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, NULL, 0);
for (i = 0; i < num_files; i++) {
if (DragQueryFileW((HDROP)stgm.hGlobal, i, fn, sizeof(fn) / sizeof(WCHAR))) {
h = CreateFileW(fn, FILE_TRAVERSE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (h != INVALID_HANDLE_VALUE) {
Status = NtFsControlFile(h, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_GET_FILE_IDS, NULL, 0, &bgfi, sizeof(btrfs_get_file_ids));
if (NT_SUCCESS(Status) && bgfi.inode == 0x100 && !bgfi.top) {
WCHAR parpath[MAX_PATH];
HANDLE h2;
StringCchCopyW(parpath, sizeof(parpath) / sizeof(WCHAR), fn);
PathRemoveFileSpecW(parpath);
h2 = CreateFileW(parpath, FILE_ADD_SUBDIRECTORY, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (h2 != INVALID_HANDLE_VALUE)
allow_snapshot = TRUE;
CloseHandle(h2);
ignore = FALSE;
bg = FALSE;
CloseHandle(h);
GlobalUnlock(hdrop);
return S_OK;
}
CloseHandle(h);
}
}
}
GlobalUnlock(hdrop);
return S_OK;
}
if (!SHGetPathFromIDListW(pidlFolder, path))
return E_FAIL;
// check we have permissions to create new subdirectory
h = CreateFileW(path, FILE_ADD_SUBDIRECTORY, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (h == INVALID_HANDLE_VALUE)
return E_FAIL;
// check is Btrfs volume
Status = NtFsControlFile(h, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_GET_FILE_IDS, NULL, 0, &bgfi, sizeof(btrfs_get_file_ids));
if (!NT_SUCCESS(Status)) {
CloseHandle(h);
return E_FAIL;
}
CloseHandle(h);
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(WCHAR* 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, volpath1, sizeof(volpath1) / sizeof(WCHAR)))
return FALSE;
if (!OpenClipboard(NULL))
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, NULL, 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 = NULL;
InitBitmapInfo(&bmi, sizeof(bmi), psize->cx, psize->cy, 32);
hdcUsed = hdc ? hdc : GetDC(NULL);
if (hdcUsed) {
*phBmp = CreateDIBSection(hdcUsed, &bmi, DIB_RGB_COLORS, ppvBits, NULL, 0);
if (hdc != hdcUsed)
ReleaseDC(NULL, hdcUsed);
}
return !*phBmp ? E_OUTOFMEMORY : S_OK;
}
void BtrfsContextMenu::get_uac_icon() {
IWICImagingFactory* factory = NULL;
IWICBitmap* bitmap;
HRESULT hr;
#ifdef __REACTOS__
hr = CoCreateInstance(CLSID_WICImagingFactory, NULL, CLSCTX_INPROC_SERVER, IID_IWICImagingFactory, (void **)&factory);
#else
hr = CoCreateInstance(CLSID_WICImagingFactory, NULL, 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(NULL, &sz, (void**)&buf, &uacicon);
if (SUCCEEDED(hr)) {
UINT stride = cx * sizeof(DWORD);
UINT buflen = cy * stride;
bitmap->CopyPixels(NULL, stride, buflen, buf);
}
}
bitmap->Release();
}
factory->Release();
}
}
HRESULT __stdcall BtrfsContextMenu::QueryContextMenu(HMENU hmenu, UINT indexMenu, UINT idCmdFirst, UINT idCmdLast, UINT uFlags) {
WCHAR str[256];
ULONG entries = 0;
if (ignore)
return E_INVALIDARG;
if (uFlags & CMF_DEFAULTONLY)
return S_OK;
if (!bg) {
if (allow_snapshot) {
if (LoadStringW(module, IDS_CREATE_SNAPSHOT, str, sizeof(str) / sizeof(WCHAR)) == 0)
return E_FAIL;
if (!InsertMenuW(hmenu, indexMenu, MF_BYPOSITION, idCmdFirst, str))
return E_FAIL;
entries = 1;
}
if (idCmdFirst + entries <= idCmdLast) {
MENUITEMINFOW mii;
if (LoadStringW(module, IDS_SEND_SUBVOL, str, sizeof(str) / sizeof(WCHAR)) == 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 = str;
mii.wID = idCmdFirst + entries;
mii.hbmpItem = uacicon;
if (!InsertMenuItemW(hmenu, indexMenu + entries, TRUE, &mii))
return E_FAIL;
entries++;
}
} else {
if (LoadStringW(module, IDS_NEW_SUBVOL, str, sizeof(str) / sizeof(WCHAR)) == 0)
return E_FAIL;
if (!InsertMenuW(hmenu, indexMenu, MF_BYPOSITION, idCmdFirst, str))
return E_FAIL;
entries = 1;
if (idCmdFirst + 1 <= idCmdLast) {
MENUITEMINFOW mii;
if (LoadStringW(module, IDS_RECV_SUBVOL, str, sizeof(str) / sizeof(WCHAR)) == 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 = 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 (LoadStringW(module, IDS_REFLINK_PASTE, str, sizeof(str) / sizeof(WCHAR)) == 0)
return E_FAIL;
if (!InsertMenuW(hmenu, indexMenu + 2, MF_BYPOSITION, idCmdFirst + 2, str))
return E_FAIL;
entries++;
}
}
return MAKE_HRESULT(SEVERITY_SUCCESS, 0, entries);
}
static void create_snapshot(HWND hwnd, WCHAR* fn) {
HANDLE h;
NTSTATUS Status;
IO_STATUS_BLOCK iosb;
btrfs_get_file_ids bgfi;
h = CreateFileW(fn, FILE_TRAVERSE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (h != INVALID_HANDLE_VALUE) {
Status = NtFsControlFile(h, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_GET_FILE_IDS, NULL, 0, &bgfi, sizeof(btrfs_get_file_ids));
if (NT_SUCCESS(Status) && bgfi.inode == 0x100 && !bgfi.top) {
WCHAR parpath[MAX_PATH], subvolname[MAX_PATH], templ[MAX_PATH], name[MAX_PATH], searchpath[MAX_PATH];
HANDLE h2, fff;
btrfs_create_snapshot* bcs;
ULONG namelen, pathend;
WIN32_FIND_DATAW wfd;
SYSTEMTIME time;
StringCchCopyW(parpath, sizeof(parpath) / sizeof(WCHAR), fn);
PathRemoveFileSpecW(parpath);
StringCchCopyW(subvolname, sizeof(subvolname) / sizeof(WCHAR), fn);
PathStripPathW(subvolname);
h2 = CreateFileW(parpath, FILE_ADD_SUBDIRECTORY, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (h2 == INVALID_HANDLE_VALUE) {
ShowError(hwnd, GetLastError());
CloseHandle(h);
return;
}
if (!LoadStringW(module, IDS_SNAPSHOT_FILENAME, templ, MAX_PATH)) {
ShowError(hwnd, GetLastError());
CloseHandle(h);
CloseHandle(h2);
return;
}
GetLocalTime(&time);
if (StringCchPrintfW(name, sizeof(name) / sizeof(WCHAR), templ, subvolname, time.wYear, time.wMonth, time.wDay) == STRSAFE_E_INSUFFICIENT_BUFFER) {
MessageBoxW(hwnd, L"Filename too long.\n", L"Error", MB_ICONERROR);
CloseHandle(h);
CloseHandle(h2);
return;
}
StringCchCopyW(searchpath, sizeof(searchpath) / sizeof(WCHAR), parpath);
StringCchCatW(searchpath, sizeof(searchpath) / sizeof(WCHAR), L"\\");
pathend = wcslen(searchpath);
StringCchCatW(searchpath, sizeof(searchpath) / sizeof(WCHAR), name);
fff = FindFirstFileW(searchpath, &wfd);
if (fff != INVALID_HANDLE_VALUE) {
ULONG i = wcslen(searchpath), num = 2;
do {
FindClose(fff);
searchpath[i] = 0;
if (StringCchPrintfW(searchpath, sizeof(searchpath) / sizeof(WCHAR), L"%s (%u)", searchpath, num) == STRSAFE_E_INSUFFICIENT_BUFFER) {
MessageBoxW(hwnd, L"Filename too long.\n", L"Error", MB_ICONERROR);
CloseHandle(h);
CloseHandle(h2);
return;
}
fff = FindFirstFileW(searchpath, &wfd);
num++;
} while (fff != INVALID_HANDLE_VALUE);
}
namelen = wcslen(&searchpath[pathend]) * sizeof(WCHAR);
bcs = (btrfs_create_snapshot*)malloc(sizeof(btrfs_create_snapshot) - 1 + namelen);
bcs->readonly = FALSE;
bcs->posix = FALSE;
bcs->subvol = h;
bcs->namelen = namelen;
memcpy(bcs->name, &searchpath[pathend], namelen);
Status = NtFsControlFile(h2, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_CREATE_SNAPSHOT, bcs, sizeof(btrfs_create_snapshot) - 1 + namelen, NULL, 0);
if (!NT_SUCCESS(Status))
ShowNtStatusError(hwnd, Status);
CloseHandle(h2);
}
CloseHandle(h);
} else
ShowError(hwnd, GetLastError());
}
static UINT64 __inline sector_align(UINT64 n, UINT64 a) {
if (n & (a - 1))
n = (n + a) & ~(a - 1);
return n;
}
BOOL BtrfsContextMenu::reflink_copy(HWND hwnd, const WCHAR* fn, const WCHAR* dir) {
HANDLE source, dest;
WCHAR* name, volpath1[255], volpath2[255];
std::wstring dirw, newpath;
BOOL ret = FALSE;
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))) {
ShowError(hwnd, GetLastError());
return FALSE;
}
if (!GetVolumePathNameW(dir, volpath2, sizeof(volpath2) / sizeof(WCHAR))) {
ShowError(hwnd, GetLastError());
return FALSE;
}
if (wcscmp(volpath1, volpath2)) // different filesystems
return FALSE;
source = CreateFileW(fn, GENERIC_READ | FILE_TRAVERSE, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_OPEN_REPARSE_POINT, NULL);
if (source == INVALID_HANDLE_VALUE) {
ShowError(hwnd, GetLastError());
return FALSE;
}
Status = NtFsControlFile(source, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_GET_INODE_INFO, NULL, 0, &bii, sizeof(btrfs_inode_info));
if (!NT_SUCCESS(Status)) {
ShowNtStatusError(hwnd, Status);
CloseHandle(source);
return FALSE;
}
// if subvol, do snapshot instead
if (bii.inode == SUBVOL_ROOT_INODE) {
btrfs_create_snapshot* bcs;
HANDLE dirh, fff;
std::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, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (dirh == INVALID_HANDLE_VALUE) {
ShowError(hwnd, GetLastError());
CloseHandle(source);
return FALSE;
}
search = dirw;
search += name;
destname = name;
fff = FindFirstFileW(search.c_str(), &wfd);
if (fff != INVALID_HANDLE_VALUE) {
do {
std::wstringstream ss;
FindClose(fff);
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 = destname.length() * sizeof(WCHAR);
memcpy(bcs->name, destname.c_str(), destname.length() * sizeof(WCHAR));
Status = NtFsControlFile(dirh, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_CREATE_SNAPSHOT, bcs, sizeof(btrfs_create_snapshot) - sizeof(WCHAR) + bcs->namelen, NULL, 0);
free(bcs);
if (!NT_SUCCESS(Status)) {
ShowNtStatusError(hwnd, Status);
CloseHandle(source);
CloseHandle(dirh);
return FALSE;
}
CloseHandle(source);
CloseHandle(dirh);
return TRUE;
}
if (!GetFileInformationByHandleEx(source, FileBasicInfo, &fbi, sizeof(FILE_BASIC_INFO))) {
ShowError(hwnd, GetLastError());
CloseHandle(source);
return FALSE;
}
if (bii.type == BTRFS_TYPE_CHARDEV || bii.type == BTRFS_TYPE_BLOCKDEV || bii.type == BTRFS_TYPE_FIFO || bii.type == BTRFS_TYPE_SOCKET) {
HANDLE dirh;
ULONG bmnsize;
btrfs_mknod* bmn;
dirh = CreateFileW(dir, FILE_ADD_FILE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (dirh == INVALID_HANDLE_VALUE) {
ShowError(hwnd, GetLastError());
CloseHandle(source);
return FALSE;
}
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 = wcslen(name) * sizeof(WCHAR);
memcpy(bmn->name, name, bmn->namelen);
Status = NtFsControlFile(dirh, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_MKNOD, bmn, bmnsize, NULL, 0);
if (!NT_SUCCESS(Status)) {
ShowNtStatusError(hwnd, Status);
CloseHandle(dirh);
CloseHandle(source);
free(bmn);
return FALSE;
}
CloseHandle(dirh);
free(bmn);
dest = CreateFileW(newpath.c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, NULL, OPEN_EXISTING, 0, NULL);
} else if (fbi.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
if (CreateDirectoryExW(fn, newpath.c_str(), NULL))
dest = CreateFileW(newpath.c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
else
dest = INVALID_HANDLE_VALUE;
} else
dest = CreateFileW(newpath.c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, NULL, 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())) {
ShowError(hwnd, GetLastError());
CloseHandle(source);
return FALSE;
}
do {
WCHAR* ext;
std::wstringstream ss;
ext = PathFindExtensionW(fn);
ss << dirw;
if (*ext == 0) {
ss << name;
ss << L" (";
ss << num;
ss << L")";
} else {
std::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(), NULL))
dest = CreateFileW(newpath.c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
else
dest = INVALID_HANDLE_VALUE;
} else
dest = CreateFileW(newpath.c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, NULL, CREATE_NEW, 0, source);
if (dest == INVALID_HANDLE_VALUE) {
if (GetLastError() != ERROR_FILE_EXISTS && GetLastError() != ERROR_ALREADY_EXISTS) {
ShowError(hwnd, GetLastError());
CloseHandle(source);
return FALSE;
}
num++;
} else
break;
} while (TRUE);
}
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, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_SET_INODE_INFO, &bsii, sizeof(btrfs_set_inode_info), NULL, 0);
if (!NT_SUCCESS(Status)) {
ShowNtStatusError(hwnd, Status);
goto end;
}
if (fbi.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
if (!(fbi.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
HANDLE h;
WIN32_FIND_DATAW fff;
std::wstring qs;
qs = fn;
qs += L"\\*";
h = FindFirstFileW(qs.c_str(), &fff);
if (h != INVALID_HANDLE_VALUE) {
do {
std::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;
if (!reflink_copy(hwnd, fn2.c_str(), newpath.c_str()))
goto end;
} while (FindNextFileW(h, &fff));
FindClose(h);
}
}
// CreateDirectoryExW also copies streams, no need to do it here
} else {
HANDLE h;
WIN32_FIND_STREAM_DATA fsd;
if (fbi.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
reparse_header rh;
ULONG rplen;
UINT8* rp;
if (!DeviceIoControl(source, FSCTL_GET_REPARSE_POINT, NULL, 0, &rh, sizeof(reparse_header), &bytesret, NULL)) {
if (GetLastError() != ERROR_MORE_DATA) {
ShowError(hwnd, GetLastError());
goto end;
}
}
rplen = sizeof(reparse_header) + rh.ReparseDataLength;
rp = (UINT8*)malloc(rplen);
if (!DeviceIoControl(source, FSCTL_GET_REPARSE_POINT, NULL, 0, rp, rplen, &bytesret, NULL)) {
ShowError(hwnd, GetLastError());
goto end;
}
if (!DeviceIoControl(dest, FSCTL_SET_REPARSE_POINT, rp, rplen, NULL, 0, &bytesret, NULL)) {
ShowError(hwnd, GetLastError());
goto end;
}
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 offset, alloc_size;
ULONG maxdup;
if (!GetFileInformationByHandleEx(source, FileStandardInfo, &fsi, sizeof(FILE_STANDARD_INFO))) {
ShowError(hwnd, GetLastError());
goto end;
}
if (!DeviceIoControl(source, FSCTL_GET_INTEGRITY_INFORMATION, NULL, 0, &fgiib, sizeof(FSCTL_GET_INTEGRITY_INFORMATION_BUFFER), &bytesret, NULL)) {
ShowError(hwnd, GetLastError());
goto end;
}
if (fbi.FileAttributes & FILE_ATTRIBUTE_SPARSE_FILE) {
if (!DeviceIoControl(dest, FSCTL_SET_SPARSE, NULL, 0, NULL, 0, &bytesret, NULL)) {
ShowError(hwnd, GetLastError());
goto end;
}
}
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), NULL, 0, &bytesret, NULL)) {
ShowError(hwnd, GetLastError());
goto end;
}
feofi.EndOfFile = fsi.EndOfFile;
if (!SetFileInformationByHandle(dest, FileEndOfFileInfo, &feofi, sizeof(FILE_END_OF_FILE_INFO))){
ShowError(hwnd, GetLastError());
goto end;
}
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), NULL, 0, &bytesret, NULL)) {
ShowError(hwnd, GetLastError());
goto end;
}
offset += ded.ByteCount.QuadPart;
}
}
h = FindFirstStreamW(fn, FindStreamInfoStandard, &fsd, 0);
if (h != INVALID_HANDLE_VALUE) {
do {
std::wstring sn;
sn = fsd.cStreamName;
if (sn != L"::$DATA" && sn.length() > 6 && sn.substr(sn.length() - 6, 6) == L":$DATA") {
HANDLE stream;
UINT8* data = NULL;
if (fsd.StreamSize.QuadPart > 0) {
std::wstring fn2;
fn2 = fn;
fn2 += sn;
stream = CreateFileW(fn2.c_str(), GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);
if (stream == INVALID_HANDLE_VALUE) {
ShowError(hwnd, GetLastError());
FindClose(h);
goto end;
}
// We can get away with this because our streams are guaranteed to be below 64 KB -
// don't do this on NTFS!
data = (UINT8*)malloc(fsd.StreamSize.QuadPart);
if (!ReadFile(stream, data, fsd.StreamSize.QuadPart, &bytesret, NULL)) {
ShowError(hwnd, GetLastError());
FindClose(h);
free(data);
CloseHandle(stream);
goto end;
}
CloseHandle(stream);
}
stream = CreateFileW((newpath + sn).c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, NULL, CREATE_NEW, 0, NULL);
if (stream == INVALID_HANDLE_VALUE) {
ShowError(hwnd, GetLastError());
FindClose(h);
if (data) free(data);
goto end;
}
if (data) {
if (!WriteFile(stream, data, fsd.StreamSize.QuadPart, &bytesret, NULL)) {
ShowError(hwnd, GetLastError());
FindClose(h);
free(data);
CloseHandle(stream);
goto end;
}
free(data);
}
CloseHandle(stream);
}
} while (FindNextStreamW(h, &fsd));
FindClose(h);
}
}
atime.dwLowDateTime = fbi.LastAccessTime.LowPart;
atime.dwHighDateTime = fbi.LastAccessTime.HighPart;
mtime.dwLowDateTime = fbi.LastWriteTime.LowPart;
mtime.dwHighDateTime = fbi.LastWriteTime.HighPart;
SetFileTime(dest, NULL, &atime, &mtime);
Status = NtFsControlFile(source, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_GET_XATTRS, NULL, 0, &bsxa, sizeof(btrfs_set_xattr));
if (Status == STATUS_BUFFER_OVERFLOW || (NT_SUCCESS(Status) && bsxa.valuelen > 0)) {
ULONG xalen = 0;
btrfs_set_xattr *xa = NULL, *xa2;
do {
xalen += 1024;
if (xa) free(xa);
xa = (btrfs_set_xattr*)malloc(xalen);
Status = NtFsControlFile(source, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_GET_XATTRS, NULL, 0, xa, xalen);
} while (Status == STATUS_BUFFER_OVERFLOW);
if (!NT_SUCCESS(Status)) {
free(xa);
ShowNtStatusError(hwnd, Status);
goto end;
}
xa2 = xa;
while (xa2->valuelen > 0) {
Status = NtFsControlFile(dest, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_SET_XATTR, xa2,
offsetof(btrfs_set_xattr, data[0]) + xa2->namelen + xa2->valuelen, NULL, 0);
if (!NT_SUCCESS(Status)) {
free(xa);
ShowNtStatusError(hwnd, Status);
goto end;
}
xa2 = (btrfs_set_xattr*)&xa2->data[xa2->namelen + xa2->valuelen];
}
free(xa);
} else if (!NT_SUCCESS(Status)) {
ShowNtStatusError(hwnd, Status);
goto end;
}
ret = TRUE;
end:
if (!ret) {
FILE_DISPOSITION_INFO fdi;
fdi.DeleteFile = TRUE;
if (!SetFileInformationByHandle(dest, FileDispositionInfo, &fdi, sizeof(FILE_DISPOSITION_INFO)))
ShowError(hwnd, GetLastError());
}
CloseHandle(dest);
CloseHandle(source);
return ret;
}
HRESULT __stdcall BtrfsContextMenu::InvokeCommand(LPCMINVOKECOMMANDINFO picia) {
LPCMINVOKECOMMANDINFOEX pici = (LPCMINVOKECOMMANDINFOEX)picia;
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, NULL, 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];
std::wstring t;
SHELLEXECUTEINFOW sei;
GetModuleFileNameW(module, dll, sizeof(dll) / sizeof(WCHAR));
if (!stgm_set)
return E_FAIL;
num_files = DragQueryFileW((HDROP)stgm.hGlobal, 0xFFFFFFFF, NULL, 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)) {
ShowError(pici->hwnd, GetLastError());
return E_FAIL;
}
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))) {
HANDLE h;
IO_STATUS_BLOCK iosb;
NTSTATUS Status;
ULONG pathlen, searchpathlen, pathend, bcslen;
WCHAR name[MAX_PATH], *searchpath;
btrfs_create_subvol* bcs;
HANDLE fff;
WIN32_FIND_DATAW wfd;
if (!LoadStringW(module, IDS_NEW_SUBVOL_FILENAME, name, MAX_PATH)) {
ShowError(pici->hwnd, GetLastError());
return E_FAIL;
}
h = CreateFileW(path, FILE_ADD_SUBDIRECTORY, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (h == INVALID_HANDLE_VALUE) {
ShowError(pici->hwnd, GetLastError());
return E_FAIL;
}
pathlen = wcslen(path);
searchpathlen = pathlen + wcslen(name) + 10;
searchpath = (WCHAR*)malloc(searchpathlen * sizeof(WCHAR));
StringCchCopyW(searchpath, searchpathlen, path);
StringCchCatW(searchpath, searchpathlen, L"\\");
pathend = wcslen(searchpath);
StringCchCatW(searchpath, searchpathlen, name);
fff = FindFirstFileW(searchpath, &wfd);
if (fff != INVALID_HANDLE_VALUE) {
ULONG i = wcslen(searchpath), num = 2;
do {
FindClose(fff);
searchpath[i] = 0;
if (StringCchPrintfW(searchpath, searchpathlen, L"%s (%u)", searchpath, num) == STRSAFE_E_INSUFFICIENT_BUFFER) {
MessageBoxW(pici->hwnd, L"Filename too long.\n", L"Error", MB_ICONERROR);
CloseHandle(h);
return E_FAIL;
}
fff = FindFirstFileW(searchpath, &wfd);
num++;
} while (fff != INVALID_HANDLE_VALUE);
}
bcslen = offsetof(btrfs_create_subvol, name[0]) + (wcslen(&searchpath[pathend]) * sizeof(WCHAR));
bcs = (btrfs_create_subvol*)malloc(bcslen);
bcs->readonly = FALSE;
bcs->posix = FALSE;
bcs->namelen = wcslen(&searchpath[pathend]) * sizeof(WCHAR);
memcpy(bcs->name, &searchpath[pathend], bcs->namelen);
Status = NtFsControlFile(h, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_CREATE_SUBVOL, bcs, bcslen, NULL, 0);
free(searchpath);
free(bcs);
if (!NT_SUCCESS(Status)) {
CloseHandle(h);
ShowNtStatusError(pici->hwnd, Status);
return E_FAIL;
}
CloseHandle(h);
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];
std::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)) {
ShowError(pici->hwnd, GetLastError());
return E_FAIL;
}
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)) {
ShowError(pici->hwnd, GetLastError());
return E_FAIL;
}
hdrop = (HDROP)GetClipboardData(CF_HDROP);
if (hdrop) {
HANDLE lh;
lh = GlobalLock(hdrop);
if (lh) {
ULONG num_files, i;
WCHAR fn[MAX_PATH];
num_files = DragQueryFileW(hdrop, 0xFFFFFFFF, NULL, 0);
for (i = 0; i < num_files; i++) {
if (DragQueryFileW(hdrop, i, fn, sizeof(fn) / sizeof(WCHAR))) {
if (!reflink_copy(pici->hwnd, fn, pici->lpDirectoryW)) {
GlobalUnlock(lh);
CloseClipboard();
return E_FAIL;
}
}
}
GlobalUnlock(lh);
}
}
CloseClipboard();
return S_OK;
}
}
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(std::wstring srcfn, std::wstring destdir, std::wstring destname) {
HANDLE source, dest;
BOOL ret = FALSE;
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, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_OPEN_REPARSE_POINT, NULL);
if (source == INVALID_HANDLE_VALUE)
return;
Status = NtFsControlFile(source, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_GET_INODE_INFO, NULL, 0, &bii, sizeof(btrfs_inode_info));
if (!NT_SUCCESS(Status)) {
CloseHandle(source);
return;
}
// if subvol, do snapshot instead
if (bii.inode == SUBVOL_ROOT_INODE) {
ULONG bcslen;
btrfs_create_snapshot* bcs;
HANDLE dirh;
dirh = CreateFileW(destdir.c_str(), FILE_ADD_SUBDIRECTORY, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (dirh == INVALID_HANDLE_VALUE) {
CloseHandle(source);
return;
}
bcslen = offsetof(btrfs_create_snapshot, name[0]) + (destname.length() * sizeof(WCHAR));
bcs = (btrfs_create_snapshot*)malloc(bcslen);
bcs->subvol = source;
bcs->namelen = destname.length() * sizeof(WCHAR);
memcpy(bcs->name, destname.c_str(), destname.length() * sizeof(WCHAR));
Status = NtFsControlFile(dirh, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_CREATE_SNAPSHOT, bcs, bcslen, NULL, 0);
free(bcs);
CloseHandle(source);
CloseHandle(dirh);
return;
}
if (!GetFileInformationByHandleEx(source, FileBasicInfo, &fbi, sizeof(FILE_BASIC_INFO))) {
CloseHandle(source);
return;
}
if (bii.type == BTRFS_TYPE_CHARDEV || bii.type == BTRFS_TYPE_BLOCKDEV || bii.type == BTRFS_TYPE_FIFO || bii.type == BTRFS_TYPE_SOCKET) {
HANDLE dirh;
ULONG bmnsize;
btrfs_mknod* bmn;
dirh = CreateFileW(destdir.c_str(), FILE_ADD_FILE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (dirh == INVALID_HANDLE_VALUE) {
CloseHandle(source);
return;
}
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 = destname.length() * sizeof(WCHAR);
memcpy(bmn->name, destname.c_str(), bmn->namelen);
Status = NtFsControlFile(dirh, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_MKNOD, bmn, bmnsize, NULL, 0);
if (!NT_SUCCESS(Status)) {
CloseHandle(dirh);
CloseHandle(source);
free(bmn);
return;
}
CloseHandle(dirh);
free(bmn);
dest = CreateFileW((destdir + destname).c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, NULL, OPEN_EXISTING, 0, NULL);
} else if (fbi.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
if (CreateDirectoryExW(srcfn.c_str(), (destdir + destname).c_str(), NULL))
dest = CreateFileW((destdir + destname).c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
else
dest = INVALID_HANDLE_VALUE;
} else
dest = CreateFileW((destdir + destname).c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, NULL, CREATE_NEW, 0, source);
if (dest == INVALID_HANDLE_VALUE) {
CloseHandle(source);
return;
}
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, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_SET_INODE_INFO, &bsii, sizeof(btrfs_set_inode_info), NULL, 0);
if (!NT_SUCCESS(Status))
goto end;
if (fbi.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
if (!(fbi.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
HANDLE h;
WIN32_FIND_DATAW fff;
std::wstring qs;
qs = srcfn;
qs += L"\\*";
h = FindFirstFileW(qs.c_str(), &fff);
if (h != INVALID_HANDLE_VALUE) {
do {
std::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));
FindClose(h);
}
}
// CreateDirectoryExW also copies streams, no need to do it here
} else {
HANDLE h;
WIN32_FIND_STREAM_DATA fsd;
if (fbi.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
reparse_header rh;
ULONG rplen;
UINT8* rp;
if (!DeviceIoControl(source, FSCTL_GET_REPARSE_POINT, NULL, 0, &rh, sizeof(reparse_header), &bytesret, NULL)) {
if (GetLastError() != ERROR_MORE_DATA)
goto end;
}
rplen = sizeof(reparse_header) + rh.ReparseDataLength;
rp = (UINT8*)malloc(rplen);
if (!DeviceIoControl(source, FSCTL_GET_REPARSE_POINT, NULL, 0, rp, rplen, &bytesret, NULL))
goto end;
if (!DeviceIoControl(dest, FSCTL_SET_REPARSE_POINT, rp, rplen, NULL, 0, &bytesret, NULL))
goto end;
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 offset, alloc_size;
ULONG maxdup;
if (!GetFileInformationByHandleEx(source, FileStandardInfo, &fsi, sizeof(FILE_STANDARD_INFO)))
goto end;
if (!DeviceIoControl(source, FSCTL_GET_INTEGRITY_INFORMATION, NULL, 0, &fgiib, sizeof(FSCTL_GET_INTEGRITY_INFORMATION_BUFFER), &bytesret, NULL))
goto end;
if (fbi.FileAttributes & FILE_ATTRIBUTE_SPARSE_FILE) {
if (!DeviceIoControl(dest, FSCTL_SET_SPARSE, NULL, 0, NULL, 0, &bytesret, NULL))
goto end;
}
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), NULL, 0, &bytesret, NULL))
goto end;
feofi.EndOfFile = fsi.EndOfFile;
if (!SetFileInformationByHandle(dest, FileEndOfFileInfo, &feofi, sizeof(FILE_END_OF_FILE_INFO)))
goto end;
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), NULL, 0, &bytesret, NULL))
goto end;
offset += ded.ByteCount.QuadPart;
}
}
h = FindFirstStreamW(srcfn.c_str(), FindStreamInfoStandard, &fsd, 0);
if (h != INVALID_HANDLE_VALUE) {
do {
std::wstring sn;
sn = fsd.cStreamName;
if (sn != L"::$DATA" && sn.length() > 6 && sn.substr(sn.length() - 6, 6) == L":$DATA") {
HANDLE stream;
UINT8* data = NULL;
if (fsd.StreamSize.QuadPart > 0) {
std::wstring fn2;
fn2 = srcfn;
fn2 += sn;
stream = CreateFileW(fn2.c_str(), GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);
if (stream == INVALID_HANDLE_VALUE)
goto end;
// We can get away with this because our streams are guaranteed to be below 64 KB -
// don't do this on NTFS!
data = (UINT8*)malloc(fsd.StreamSize.QuadPart);
if (!ReadFile(stream, data, fsd.StreamSize.QuadPart, &bytesret, NULL)) {
free(data);
CloseHandle(stream);
goto end;
}
CloseHandle(stream);
}
stream = CreateFileW((destdir + destname + sn).c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, NULL, CREATE_NEW, 0, NULL);
if (stream == INVALID_HANDLE_VALUE) {
if (data) free(data);
goto end;
}
if (data) {
if (!WriteFile(stream, data, fsd.StreamSize.QuadPart, &bytesret, NULL)) {
free(data);
CloseHandle(stream);
goto end;
}
free(data);
}
CloseHandle(stream);
}
} while (FindNextStreamW(h, &fsd));
FindClose(h);
}
}
atime.dwLowDateTime = fbi.LastAccessTime.LowPart;
atime.dwHighDateTime = fbi.LastAccessTime.HighPart;
mtime.dwLowDateTime = fbi.LastWriteTime.LowPart;
mtime.dwHighDateTime = fbi.LastWriteTime.HighPart;
SetFileTime(dest, NULL, &atime, &mtime);
Status = NtFsControlFile(source, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_GET_XATTRS, NULL, 0, &bsxa, sizeof(btrfs_set_xattr));
if (Status == STATUS_BUFFER_OVERFLOW || (NT_SUCCESS(Status) && bsxa.valuelen > 0)) {
ULONG xalen = 0;
btrfs_set_xattr *xa = NULL, *xa2;
do {
xalen += 1024;
if (xa) free(xa);
xa = (btrfs_set_xattr*)malloc(xalen);
Status = NtFsControlFile(source, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_GET_XATTRS, NULL, 0, xa, xalen);
} while (Status == STATUS_BUFFER_OVERFLOW);
if (!NT_SUCCESS(Status)) {
free(xa);
goto end;
}
xa2 = xa;
while (xa2->valuelen > 0) {
Status = NtFsControlFile(dest, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_SET_XATTR, xa2,
offsetof(btrfs_set_xattr, data[0]) + xa2->namelen + xa2->valuelen, NULL, 0);
if (!NT_SUCCESS(Status)) {
free(xa);
goto end;
}
xa2 = (btrfs_set_xattr*)&xa2->data[xa2->namelen + xa2->valuelen];
}
free(xa);
} else if (!NT_SUCCESS(Status))
goto end;
ret = TRUE;
end:
if (!ret) {
FILE_DISPOSITION_INFO fdi;
fdi.DeleteFile = TRUE;
SetFileInformationByHandle(dest, FileDispositionInfo, &fdi, sizeof(FILE_DISPOSITION_INFO));
}
CloseHandle(dest);
CloseHandle(source);
}
void CALLBACK ReflinkCopyW(HWND hwnd, HINSTANCE hinst, LPWSTR lpszCmdLine, int nCmdShow) {
LPWSTR* args;
int num_args;
args = CommandLineToArgvW(lpszCmdLine, &num_args);
if (!args)
return;
if (num_args >= 2) {
HANDLE destdirh;
BOOL dest_is_dir = FALSE;
std::wstring dest = args[num_args - 1], destdir, destname;
WCHAR volpath2[MAX_PATH];
int i;
destdirh = CreateFileW(dest.c_str(), FILE_TRAVERSE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
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"\\";
}
CloseHandle(destdirh);
}
if (!dest_is_dir) {
size_t found = dest.rfind(L"\\");
if (found == std::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)))
goto end;
for (i = 0; i < num_args - 1; i++) {
WIN32_FIND_DATAW ffd;
HANDLE h;
h = FindFirstFileW(args[i], &ffd);
if (h != INVALID_HANDLE_VALUE) {
WCHAR volpath1[MAX_PATH];
std::wstring path = args[i];
size_t found = path.rfind(L"\\");
if (found == std::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 {
reflink_copy2(path + ffd.cFileName, destdir, dest_is_dir ? ffd.cFileName : destname);
} while (FindNextFileW(h, &ffd));
}
}
FindClose(h);
}
}
}
end:
LocalFree(args);
}
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