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reactos/dll/shellext/shellbtrfs/recv.cpp

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/* Copyright (c) Mark Harmstone 2017
*
* 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"
#include <windows.h>
#include <strsafe.h>
#include <stddef.h>
#include <sys/stat.h>
#include <iostream>
#include "recv.h"
#include "resource.h"
#include "crc32c.h"
#ifndef _MSC_VER
#ifdef __REACTOS__
#define __cpuidex __cpuidex_ // prevent redeclaration
#endif
#include <cpuid.h>
#else
#include <intrin.h>
#endif
const string EA_NTACL = "security.NTACL";
const string EA_DOSATTRIB = "user.DOSATTRIB";
const string EA_REPARSE = "user.reparse";
const string EA_EA = "user.EA";
const string XATTR_USER = "user.";
bool BtrfsRecv::find_tlv(uint8_t* data, ULONG datalen, uint16_t type, void** value, ULONG* len) {
size_t off = 0;
while (off < datalen) {
btrfs_send_tlv* tlv = (btrfs_send_tlv*)(data + off);
uint8_t* payload = data + off + sizeof(btrfs_send_tlv);
if (off + sizeof(btrfs_send_tlv) + tlv->length > datalen) // file is truncated
return false;
if (tlv->type == type) {
*value = payload;
*len = tlv->length;
return true;
}
off += sizeof(btrfs_send_tlv) + tlv->length;
}
return false;
}
void BtrfsRecv::cmd_subvol(HWND hwnd, btrfs_send_command* cmd, uint8_t* data, const win_handle& parent) {
string name;
BTRFS_UUID* uuid;
uint64_t* gen;
ULONG uuidlen, genlen;
btrfs_create_subvol* bcs;
NTSTATUS Status;
IO_STATUS_BLOCK iosb;
{
char* namebuf;
ULONG namelen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH, (void**)&namebuf, &namelen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path");
name = string(namebuf, namelen);
}
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_UUID, (void**)&uuid, &uuidlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"uuid");
if (uuidlen < sizeof(BTRFS_UUID))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"uuid", uuidlen, sizeof(BTRFS_UUID));
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_TRANSID, (void**)&gen, &genlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"transid");
if (genlen < sizeof(uint64_t))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"transid", genlen, sizeof(uint64_t));
this->subvol_uuid = *uuid;
this->stransid = *gen;
auto nameu = utf8_to_utf16(name);
size_t bcslen = offsetof(btrfs_create_subvol, name[0]) + (nameu.length() * sizeof(WCHAR));
bcs = (btrfs_create_subvol*)malloc(bcslen);
bcs->readonly = true;
bcs->posix = true;
bcs->namelen = (uint16_t)(nameu.length() * sizeof(WCHAR));
memcpy(bcs->name, nameu.c_str(), bcs->namelen);
Status = NtFsControlFile(parent, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_CREATE_SUBVOL, bcs, (ULONG)bcslen, nullptr, 0);
if (!NT_SUCCESS(Status))
throw string_error(IDS_RECV_CREATE_SUBVOL_FAILED, Status, format_ntstatus(Status).c_str());
subvolpath = dirpath;
subvolpath += L"\\";
subvolpath += nameu;
if (dir != INVALID_HANDLE_VALUE)
CloseHandle(dir);
if (master != INVALID_HANDLE_VALUE)
CloseHandle(master);
master = CreateFileW(subvolpath.c_str(), GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS, nullptr);
if (master == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_OPEN_PATH, subvolpath.c_str(), GetLastError(), format_message(GetLastError()).c_str());
Status = NtFsControlFile(master, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_RESERVE_SUBVOL, bcs, (ULONG)bcslen, nullptr, 0);
if (!NT_SUCCESS(Status))
throw string_error(IDS_RECV_RESERVE_SUBVOL_FAILED, Status, format_ntstatus(Status).c_str());
dir = CreateFileW(subvolpath.c_str(), FILE_ADD_SUBDIRECTORY | FILE_ADD_FILE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS, nullptr);
if (dir == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_OPEN_PATH, subvolpath.c_str(), GetLastError(), format_message(GetLastError()).c_str());
subvolpath += L"\\";
add_cache_entry(&this->subvol_uuid, this->stransid, subvolpath);
num_received++;
}
void BtrfsRecv::add_cache_entry(BTRFS_UUID* uuid, uint64_t transid, const wstring& path) {
subvol_cache sc;
sc.uuid = *uuid;
sc.transid = transid;
sc.path = path;
cache.push_back(sc);
}
void BtrfsRecv::cmd_snapshot(HWND hwnd, btrfs_send_command* cmd, uint8_t* data, const win_handle& parent) {
string name;
BTRFS_UUID *uuid, *parent_uuid;
uint64_t *gen, *parent_transid;
ULONG uuidlen, genlen, paruuidlen, partransidlen;
btrfs_create_snapshot* bcs;
NTSTATUS Status;
IO_STATUS_BLOCK iosb;
wstring parpath;
btrfs_find_subvol bfs;
WCHAR parpathw[MAX_PATH], volpathw[MAX_PATH];
size_t bcslen;
{
char* namebuf;
ULONG namelen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH, (void**)&namebuf, &namelen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path");
name = string(namebuf, namelen);
}
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_UUID, (void**)&uuid, &uuidlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"uuid");
if (uuidlen < sizeof(BTRFS_UUID))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"uuid", uuidlen, sizeof(BTRFS_UUID));
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_TRANSID, (void**)&gen, &genlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"transid");
if (genlen < sizeof(uint64_t))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"transid", genlen, sizeof(uint64_t));
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_CLONE_UUID, (void**)&parent_uuid, &paruuidlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"clone_uuid");
if (paruuidlen < sizeof(BTRFS_UUID))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"clone_uuid", paruuidlen, sizeof(BTRFS_UUID));
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_CLONE_CTRANSID, (void**)&parent_transid, &partransidlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"clone_ctransid");
if (partransidlen < sizeof(uint64_t))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"clone_ctransid", partransidlen, sizeof(uint64_t));
this->subvol_uuid = *uuid;
this->stransid = *gen;
auto nameu = utf8_to_utf16(name);
bfs.uuid = *parent_uuid;
bfs.ctransid = *parent_transid;
Status = NtFsControlFile(parent, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_FIND_SUBVOL, &bfs, sizeof(btrfs_find_subvol),
parpathw, sizeof(parpathw));
if (Status == STATUS_NOT_FOUND)
throw string_error(IDS_RECV_CANT_FIND_PARENT_SUBVOL);
else if (!NT_SUCCESS(Status))
throw string_error(IDS_RECV_FIND_SUBVOL_FAILED, Status, format_ntstatus(Status).c_str());
if (!GetVolumePathNameW(dirpath.c_str(), volpathw, (sizeof(volpathw) / sizeof(WCHAR)) - 1))
throw string_error(IDS_RECV_GETVOLUMEPATHNAME_FAILED, GetLastError(), format_message(GetLastError()).c_str());
parpath = volpathw;
if (parpath.substr(parpath.length() - 1) == L"\\")
parpath = parpath.substr(0, parpath.length() - 1);
parpath += parpathw;
{
win_handle subvol = CreateFileW(parpath.c_str(), FILE_TRAVERSE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
if (subvol == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_OPEN_PATH, parpath.c_str(), GetLastError(), format_message(GetLastError()).c_str());
bcslen = offsetof(btrfs_create_snapshot, name[0]) + (nameu.length() * sizeof(WCHAR));
bcs = (btrfs_create_snapshot*)malloc(bcslen);
bcs->readonly = true;
bcs->posix = true;
bcs->subvol = subvol;
bcs->namelen = (uint16_t)(nameu.length() * sizeof(WCHAR));
memcpy(bcs->name, nameu.c_str(), bcs->namelen);
Status = NtFsControlFile(parent, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_CREATE_SNAPSHOT, bcs, (ULONG)bcslen, nullptr, 0);
if (!NT_SUCCESS(Status))
throw string_error(IDS_RECV_CREATE_SNAPSHOT_FAILED, Status, format_ntstatus(Status).c_str());
}
subvolpath = dirpath;
subvolpath += L"\\";
subvolpath += nameu;
if (dir != INVALID_HANDLE_VALUE)
CloseHandle(dir);
if (master != INVALID_HANDLE_VALUE)
CloseHandle(master);
master = CreateFileW(subvolpath.c_str(), GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS, nullptr);
if (master == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_OPEN_PATH, subvolpath.c_str(), GetLastError(), format_message(GetLastError()).c_str());
Status = NtFsControlFile(master, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_RESERVE_SUBVOL, bcs, (ULONG)bcslen, nullptr, 0);
if (!NT_SUCCESS(Status))
throw string_error(IDS_RECV_RESERVE_SUBVOL_FAILED, Status, format_ntstatus(Status).c_str());
dir = CreateFileW(subvolpath.c_str(), FILE_ADD_SUBDIRECTORY | FILE_ADD_FILE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS, nullptr);
if (dir == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_OPEN_PATH, subvolpath.c_str(), GetLastError(), format_message(GetLastError()).c_str());
subvolpath += L"\\";
add_cache_entry(&this->subvol_uuid, this->stransid, subvolpath);
num_received++;
}
void BtrfsRecv::cmd_mkfile(HWND hwnd, btrfs_send_command* cmd, uint8_t* data) {
uint64_t *inode, *rdev = nullptr, *mode = nullptr;
ULONG inodelen;
NTSTATUS Status;
IO_STATUS_BLOCK iosb;
btrfs_mknod* bmn;
wstring nameu, pathlinku;
{
char* name;
ULONG namelen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH, (void**)&name, &namelen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path");
nameu = utf8_to_utf16(string(name, namelen));
}
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_INODE, (void**)&inode, &inodelen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"inode");
if (inodelen < sizeof(uint64_t))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"inode", inodelen, sizeof(uint64_t));
if (cmd->cmd == BTRFS_SEND_CMD_MKNOD || cmd->cmd == BTRFS_SEND_CMD_MKFIFO || cmd->cmd == BTRFS_SEND_CMD_MKSOCK) {
ULONG rdevlen, modelen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_RDEV, (void**)&rdev, &rdevlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"rdev");
if (rdevlen < sizeof(uint64_t))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"rdev", rdev, sizeof(uint64_t));
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_MODE, (void**)&mode, &modelen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"mode");
if (modelen < sizeof(uint64_t))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"mode", modelen, sizeof(uint64_t));
} else if (cmd->cmd == BTRFS_SEND_CMD_SYMLINK) {
char* pathlink;
ULONG pathlinklen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH_LINK, (void**)&pathlink, &pathlinklen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path_link");
pathlinku = utf8_to_utf16(string(pathlink, pathlinklen));
}
size_t bmnsize = sizeof(btrfs_mknod) - sizeof(WCHAR) + (nameu.length() * sizeof(WCHAR));
bmn = (btrfs_mknod*)malloc(bmnsize);
bmn->inode = *inode;
if (cmd->cmd == BTRFS_SEND_CMD_MKDIR)
bmn->type = BTRFS_TYPE_DIRECTORY;
else if (cmd->cmd == BTRFS_SEND_CMD_MKNOD)
bmn->type = *mode & S_IFCHR ? BTRFS_TYPE_CHARDEV : BTRFS_TYPE_BLOCKDEV;
else if (cmd->cmd == BTRFS_SEND_CMD_MKFIFO)
bmn->type = BTRFS_TYPE_FIFO;
else if (cmd->cmd == BTRFS_SEND_CMD_MKSOCK)
bmn->type = BTRFS_TYPE_SOCKET;
else
bmn->type = BTRFS_TYPE_FILE;
bmn->st_rdev = rdev ? *rdev : 0;
bmn->namelen = (uint16_t)(nameu.length() * sizeof(WCHAR));
memcpy(bmn->name, nameu.c_str(), bmn->namelen);
Status = NtFsControlFile(dir, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_MKNOD, bmn, (ULONG)bmnsize, nullptr, 0);
if (!NT_SUCCESS(Status)) {
free(bmn);
throw string_error(IDS_RECV_MKNOD_FAILED, Status, format_ntstatus(Status).c_str());
}
free(bmn);
if (cmd->cmd == BTRFS_SEND_CMD_SYMLINK) {
REPARSE_DATA_BUFFER* rdb;
btrfs_set_inode_info bsii;
size_t rdblen = offsetof(REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer.PathBuffer[0]) + (2 * pathlinku.length() * sizeof(WCHAR));
if (rdblen >= 0x10000)
throw string_error(IDS_RECV_PATH_TOO_LONG, funcname);
rdb = (REPARSE_DATA_BUFFER*)malloc(rdblen);
rdb->ReparseTag = IO_REPARSE_TAG_SYMLINK;
rdb->ReparseDataLength = (uint16_t)(rdblen - offsetof(REPARSE_DATA_BUFFER, SymbolicLinkReparseBuffer));
rdb->Reserved = 0;
rdb->SymbolicLinkReparseBuffer.SubstituteNameOffset = 0;
rdb->SymbolicLinkReparseBuffer.SubstituteNameLength = (uint16_t)(pathlinku.length() * sizeof(WCHAR));
rdb->SymbolicLinkReparseBuffer.PrintNameOffset = (uint16_t)(pathlinku.length() * sizeof(WCHAR));
rdb->SymbolicLinkReparseBuffer.PrintNameLength = (uint16_t)(pathlinku.length() * sizeof(WCHAR));
rdb->SymbolicLinkReparseBuffer.Flags = SYMLINK_FLAG_RELATIVE;
memcpy(rdb->SymbolicLinkReparseBuffer.PathBuffer, pathlinku.c_str(), rdb->SymbolicLinkReparseBuffer.SubstituteNameLength);
memcpy(rdb->SymbolicLinkReparseBuffer.PathBuffer + (rdb->SymbolicLinkReparseBuffer.SubstituteNameLength / sizeof(WCHAR)),
pathlinku.c_str(), rdb->SymbolicLinkReparseBuffer.PrintNameLength);
win_handle h = CreateFileW((subvolpath + nameu).c_str(), GENERIC_WRITE | WRITE_DAC, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS, nullptr);
if (h == INVALID_HANDLE_VALUE) {
free(rdb);
throw string_error(IDS_RECV_CANT_OPEN_FILE, funcname, nameu.c_str(), GetLastError(), format_message(GetLastError()).c_str());
}
Status = NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_SET_REPARSE_POINT, rdb, (ULONG)rdblen, nullptr, 0);
if (!NT_SUCCESS(Status)) {
free(rdb);
throw string_error(IDS_RECV_SET_REPARSE_POINT_FAILED, Status, format_ntstatus(Status).c_str());
}
free(rdb);
memset(&bsii, 0, sizeof(btrfs_set_inode_info));
bsii.mode_changed = true;
bsii.st_mode = 0777;
Status = NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_SET_INODE_INFO, &bsii, sizeof(btrfs_set_inode_info), nullptr, 0);
if (!NT_SUCCESS(Status))
throw string_error(IDS_RECV_SETINODEINFO_FAILED, Status, format_ntstatus(Status).c_str());
} else if (cmd->cmd == BTRFS_SEND_CMD_MKNOD || cmd->cmd == BTRFS_SEND_CMD_MKFIFO || cmd->cmd == BTRFS_SEND_CMD_MKSOCK) {
uint64_t* mode;
ULONG modelen;
if (find_tlv(data, cmd->length, BTRFS_SEND_TLV_MODE, (void**)&mode, &modelen)) {
btrfs_set_inode_info bsii;
if (modelen < sizeof(uint64_t))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"mode", modelen, sizeof(uint64_t));
win_handle h = CreateFileW((subvolpath + nameu).c_str(), WRITE_DAC, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS, nullptr);
if (h == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_OPEN_FILE, funcname, nameu.c_str(), GetLastError(), format_message(GetLastError()).c_str());
memset(&bsii, 0, sizeof(btrfs_set_inode_info));
bsii.mode_changed = true;
bsii.st_mode = (uint32_t)*mode;
Status = NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_SET_INODE_INFO, &bsii, sizeof(btrfs_set_inode_info), nullptr, 0);
if (!NT_SUCCESS(Status))
throw string_error(IDS_RECV_SETINODEINFO_FAILED, Status, format_ntstatus(Status).c_str());
}
}
}
void BtrfsRecv::cmd_rename(HWND hwnd, btrfs_send_command* cmd, uint8_t* data) {
wstring pathu, path_tou;
{
char* path;
ULONG path_len;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH, (void**)&path, &path_len))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path");
pathu = utf8_to_utf16(string(path, path_len));
}
{
char* path_to;
ULONG path_to_len;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH_TO, (void**)&path_to, &path_to_len))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path_to");
path_tou = utf8_to_utf16(string(path_to, path_to_len));
}
if (!MoveFileW((subvolpath + pathu).c_str(), (subvolpath + path_tou).c_str()))
throw string_error(IDS_RECV_MOVEFILE_FAILED, pathu.c_str(), path_tou.c_str(), GetLastError(), format_message(GetLastError()).c_str());
}
void BtrfsRecv::cmd_link(HWND hwnd, btrfs_send_command* cmd, uint8_t* data) {
wstring pathu, path_linku;
{
char* path;
ULONG path_len;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH, (void**)&path, &path_len))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path");
pathu = utf8_to_utf16(string(path, path_len));
}
{
char* path_link;
ULONG path_link_len;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH_LINK, (void**)&path_link, &path_link_len))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path_link");
path_linku = utf8_to_utf16(string(path_link, path_link_len));
}
if (!CreateHardLinkW((subvolpath + pathu).c_str(), (subvolpath + path_linku).c_str(), nullptr))
throw string_error(IDS_RECV_CREATEHARDLINK_FAILED, pathu.c_str(), path_linku.c_str(), GetLastError(), format_message(GetLastError()).c_str());
}
void BtrfsRecv::cmd_unlink(HWND hwnd, btrfs_send_command* cmd, uint8_t* data) {
wstring pathu;
ULONG att;
{
char* path;
ULONG pathlen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH, (void**)&path, &pathlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path");
pathu = utf8_to_utf16(string(path, pathlen));
}
att = GetFileAttributesW((subvolpath + pathu).c_str());
if (att == INVALID_FILE_ATTRIBUTES)
throw string_error(IDS_RECV_GETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
if (att & FILE_ATTRIBUTE_READONLY) {
if (!SetFileAttributesW((subvolpath + pathu).c_str(), att & ~FILE_ATTRIBUTE_READONLY))
throw string_error(IDS_RECV_SETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
}
if (!DeleteFileW((subvolpath + pathu).c_str()))
throw string_error(IDS_RECV_DELETEFILE_FAILED, pathu.c_str(), GetLastError(), format_message(GetLastError()).c_str());
}
void BtrfsRecv::cmd_rmdir(HWND hwnd, btrfs_send_command* cmd, uint8_t* data) {
wstring pathu;
ULONG att;
{
char* path;
ULONG pathlen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH, (void**)&path, &pathlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path");
pathu = utf8_to_utf16(string(path, pathlen));
}
att = GetFileAttributesW((subvolpath + pathu).c_str());
if (att == INVALID_FILE_ATTRIBUTES)
throw string_error(IDS_RECV_GETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
if (att & FILE_ATTRIBUTE_READONLY) {
if (!SetFileAttributesW((subvolpath + pathu).c_str(), att & ~FILE_ATTRIBUTE_READONLY))
throw string_error(IDS_RECV_SETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
}
if (!RemoveDirectoryW((subvolpath + pathu).c_str()))
throw string_error(IDS_RECV_REMOVEDIRECTORY_FAILED, pathu.c_str(), GetLastError(), format_message(GetLastError()).c_str());
}
void BtrfsRecv::cmd_setxattr(HWND hwnd, btrfs_send_command* cmd, uint8_t* data) {
string xattrname;
uint8_t* xattrdata;
ULONG xattrdatalen;
wstring pathu;
{
char* path;
ULONG pathlen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH, (void**)&path, &pathlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path");
pathu = utf8_to_utf16(string(path, pathlen));
}
{
char* xattrnamebuf;
ULONG xattrnamelen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_XATTR_NAME, (void**)&xattrnamebuf, &xattrnamelen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"xattr_name");
xattrname = string(xattrnamebuf, xattrnamelen);
}
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_XATTR_DATA, (void**)&xattrdata, &xattrdatalen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"xattr_data");
if (xattrname.length() > XATTR_USER.length() && xattrname.substr(0, XATTR_USER.length()) == XATTR_USER &&
xattrname != EA_DOSATTRIB && xattrname != EA_EA && xattrname != EA_REPARSE) {
ULONG att;
auto streamname = utf8_to_utf16(xattrname);
att = GetFileAttributesW((subvolpath + pathu).c_str());
if (att == INVALID_FILE_ATTRIBUTES)
throw string_error(IDS_RECV_GETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
if (att & FILE_ATTRIBUTE_READONLY) {
if (!SetFileAttributesW((subvolpath + pathu).c_str(), att & ~FILE_ATTRIBUTE_READONLY))
throw string_error(IDS_RECV_SETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
}
streamname = streamname.substr(XATTR_USER.length());
win_handle h = CreateFileW((subvolpath + pathu + L":" + streamname).c_str(), GENERIC_WRITE, 0,
nullptr, CREATE_ALWAYS, FILE_FLAG_POSIX_SEMANTICS, nullptr);
if (h == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_CREATE_FILE, (pathu + L":" + streamname).c_str(), GetLastError(), format_message(GetLastError()).c_str());
if (xattrdatalen > 0) {
if (!WriteFile(h, xattrdata, xattrdatalen, nullptr, nullptr))
throw string_error(IDS_RECV_WRITEFILE_FAILED, GetLastError(), format_message(GetLastError()).c_str());
}
if (att & FILE_ATTRIBUTE_READONLY) {
if (!SetFileAttributesW((subvolpath + pathu).c_str(), att))
throw string_error(IDS_RECV_SETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
}
} else {
IO_STATUS_BLOCK iosb;
NTSTATUS Status;
ULONG perms = FILE_WRITE_ATTRIBUTES;
btrfs_set_xattr* bsxa;
if (xattrname == EA_NTACL)
perms |= WRITE_DAC | WRITE_OWNER;
else if (xattrname == EA_EA)
perms |= FILE_WRITE_EA;
win_handle h = CreateFileW((subvolpath + pathu).c_str(), perms, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS | FILE_OPEN_REPARSE_POINT, nullptr);
if (h == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_OPEN_FILE, funcname, pathu.c_str(), GetLastError(), format_message(GetLastError()).c_str());
size_t bsxalen = offsetof(btrfs_set_xattr, data[0]) + xattrname.length() + xattrdatalen;
bsxa = (btrfs_set_xattr*)malloc(bsxalen);
if (!bsxa)
throw string_error(IDS_OUT_OF_MEMORY);
bsxa->namelen = (uint16_t)xattrname.length();
bsxa->valuelen = (uint16_t)xattrdatalen;
memcpy(bsxa->data, xattrname.c_str(), xattrname.length());
memcpy(&bsxa->data[xattrname.length()], xattrdata, xattrdatalen);
Status = NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_SET_XATTR, bsxa, (ULONG)bsxalen, nullptr, 0);
if (!NT_SUCCESS(Status)) {
free(bsxa);
throw string_error(IDS_RECV_SETXATTR_FAILED, Status, format_ntstatus(Status).c_str());
}
free(bsxa);
}
}
void BtrfsRecv::cmd_removexattr(HWND hwnd, btrfs_send_command* cmd, uint8_t* data) {
wstring pathu;
string xattrname;
{
char* path;
ULONG pathlen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH, (void**)&path, &pathlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path");
pathu = utf8_to_utf16(string(path, pathlen));
}
{
char* xattrnamebuf;
ULONG xattrnamelen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_XATTR_NAME, (void**)&xattrnamebuf, &xattrnamelen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"xattr_name");
xattrname = string(xattrnamebuf, xattrnamelen);
}
if (xattrname.length() > XATTR_USER.length() && xattrname.substr(0, XATTR_USER.length()) == XATTR_USER && xattrname != EA_DOSATTRIB && xattrname != EA_EA) { // deleting stream
ULONG att;
auto streamname = utf8_to_utf16(xattrname);
streamname = streamname.substr(XATTR_USER.length());
att = GetFileAttributesW((subvolpath + pathu).c_str());
if (att == INVALID_FILE_ATTRIBUTES)
throw string_error(IDS_RECV_GETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
if (att & FILE_ATTRIBUTE_READONLY) {
if (!SetFileAttributesW((subvolpath + pathu).c_str(), att & ~FILE_ATTRIBUTE_READONLY))
throw string_error(IDS_RECV_SETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
}
if (!DeleteFileW((subvolpath + pathu + L":" + streamname).c_str()))
throw string_error(IDS_RECV_DELETEFILE_FAILED, (pathu + L":" + streamname).c_str(), GetLastError(), format_message(GetLastError()).c_str());
if (att & FILE_ATTRIBUTE_READONLY) {
if (!SetFileAttributesW((subvolpath + pathu).c_str(), att))
throw string_error(IDS_RECV_SETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
}
} else {
IO_STATUS_BLOCK iosb;
NTSTATUS Status;
ULONG perms = FILE_WRITE_ATTRIBUTES;
btrfs_set_xattr* bsxa;
if (xattrname == EA_NTACL)
perms |= WRITE_DAC | WRITE_OWNER;
else if (xattrname == EA_EA)
perms |= FILE_WRITE_EA;
win_handle h = CreateFileW((subvolpath + pathu).c_str(), perms, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS | FILE_OPEN_REPARSE_POINT, nullptr);
if (h == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_OPEN_FILE, funcname, pathu.c_str(), GetLastError(), format_message(GetLastError()).c_str());
size_t bsxalen = offsetof(btrfs_set_xattr, data[0]) + xattrname.length();
bsxa = (btrfs_set_xattr*)malloc(bsxalen);
if (!bsxa)
throw string_error(IDS_OUT_OF_MEMORY);
bsxa->namelen = (uint16_t)(xattrname.length());
bsxa->valuelen = 0;
memcpy(bsxa->data, xattrname.c_str(), xattrname.length());
Status = NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_SET_XATTR, bsxa, (ULONG)bsxalen, nullptr, 0);
if (!NT_SUCCESS(Status)) {
free(bsxa);
throw string_error(IDS_RECV_SETXATTR_FAILED, Status, format_ntstatus(Status).c_str());
}
free(bsxa);
}
}
void BtrfsRecv::cmd_write(HWND hwnd, btrfs_send_command* cmd, uint8_t* data) {
uint64_t* offset;
uint8_t* writedata;
ULONG offsetlen, datalen;
wstring pathu;
HANDLE h;
LARGE_INTEGER offli;
NTSTATUS Status;
IO_STATUS_BLOCK iosb;
{
char* path;
ULONG pathlen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH, (void**)&path, &pathlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path");
pathu = utf8_to_utf16(string(path, pathlen));
}
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_OFFSET, (void**)&offset, &offsetlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"offset");
if (offsetlen < sizeof(uint64_t))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"offset", offsetlen, sizeof(uint64_t));
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_DATA, (void**)&writedata, &datalen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"data");
if (lastwritepath != pathu) {
FILE_BASIC_INFO fbi;
if (lastwriteatt & FILE_ATTRIBUTE_READONLY) {
if (!SetFileAttributesW((subvolpath + lastwritepath).c_str(), lastwriteatt))
throw string_error(IDS_RECV_SETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
}
CloseHandle(lastwritefile);
lastwriteatt = GetFileAttributesW((subvolpath + pathu).c_str());
if (lastwriteatt == INVALID_FILE_ATTRIBUTES)
throw string_error(IDS_RECV_GETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
if (lastwriteatt & FILE_ATTRIBUTE_READONLY) {
if (!SetFileAttributesW((subvolpath + pathu).c_str(), lastwriteatt & ~FILE_ATTRIBUTE_READONLY))
throw string_error(IDS_RECV_SETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
}
h = CreateFileW((subvolpath + pathu).c_str(), FILE_WRITE_DATA | FILE_WRITE_ATTRIBUTES, 0, nullptr, OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS, nullptr);
if (h == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_OPEN_FILE, funcname, pathu.c_str(), GetLastError(), format_message(GetLastError()).c_str());
lastwritepath = pathu;
lastwritefile = h;
memset(&fbi, 0, sizeof(FILE_BASIC_INFO));
fbi.LastWriteTime.QuadPart = -1;
Status = NtSetInformationFile(h, &iosb, &fbi, sizeof(FILE_BASIC_INFO), FileBasicInformation);
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
} else
h = lastwritefile;
offli.QuadPart = *offset;
if (SetFilePointer(h, offli.LowPart, &offli.HighPart, FILE_BEGIN) == INVALID_SET_FILE_POINTER)
throw string_error(IDS_RECV_SETFILEPOINTER_FAILED, GetLastError(), format_message(GetLastError()).c_str());
if (!WriteFile(h, writedata, datalen, nullptr, nullptr))
throw string_error(IDS_RECV_WRITEFILE_FAILED, GetLastError(), format_message(GetLastError()).c_str());
}
void BtrfsRecv::cmd_clone(HWND hwnd, btrfs_send_command* cmd, uint8_t* data) {
uint64_t *offset, *cloneoffset, *clonetransid, *clonelen;
BTRFS_UUID* cloneuuid;
ULONG i, offsetlen, cloneoffsetlen, cloneuuidlen, clonetransidlen, clonelenlen;
wstring pathu, clonepathu, clonepar;
btrfs_find_subvol bfs;
NTSTATUS Status;
IO_STATUS_BLOCK iosb;
WCHAR cloneparw[MAX_PATH];
DUPLICATE_EXTENTS_DATA ded;
LARGE_INTEGER filesize;
bool found = false;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_OFFSET, (void**)&offset, &offsetlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"offset");
if (offsetlen < sizeof(uint64_t))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"offset", offsetlen, sizeof(uint64_t));
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_CLONE_LENGTH, (void**)&clonelen, &clonelenlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"clone_len");
if (clonelenlen < sizeof(uint64_t))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"clone_len", clonelenlen, sizeof(uint64_t));
{
char* path;
ULONG pathlen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH, (void**)&path, &pathlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path");
pathu = utf8_to_utf16(string(path, pathlen));
}
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_CLONE_UUID, (void**)&cloneuuid, &cloneuuidlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"clone_uuid");
if (cloneuuidlen < sizeof(BTRFS_UUID))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"clone_uuid", cloneuuidlen, sizeof(BTRFS_UUID));
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_CLONE_CTRANSID, (void**)&clonetransid, &clonetransidlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"clone_ctransid");
if (clonetransidlen < sizeof(uint64_t))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"clone_ctransid", clonetransidlen, sizeof(uint64_t));
{
char* clonepath;
ULONG clonepathlen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_CLONE_PATH, (void**)&clonepath, &clonepathlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"clone_path");
clonepathu = utf8_to_utf16(string(clonepath, clonepathlen));
}
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_CLONE_OFFSET, (void**)&cloneoffset, &cloneoffsetlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"clone_offset");
if (cloneoffsetlen < sizeof(uint64_t))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"clone_offset", cloneoffsetlen, sizeof(uint64_t));
for (i = 0; i < cache.size(); i++) {
if (!memcmp(cloneuuid, &cache[i].uuid, sizeof(BTRFS_UUID)) && *clonetransid == cache[i].transid) {
clonepar = cache[i].path;
found = true;
break;
}
}
if (!found) {
WCHAR volpathw[MAX_PATH];
bfs.uuid = *cloneuuid;
bfs.ctransid = *clonetransid;
Status = NtFsControlFile(dir, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_FIND_SUBVOL, &bfs, sizeof(btrfs_find_subvol),
cloneparw, sizeof(cloneparw));
if (Status == STATUS_NOT_FOUND)
throw string_error(IDS_RECV_CANT_FIND_CLONE_SUBVOL);
else if (!NT_SUCCESS(Status))
throw string_error(IDS_RECV_FIND_SUBVOL_FAILED, Status, format_ntstatus(Status).c_str());
if (!GetVolumePathNameW(dirpath.c_str(), volpathw, (sizeof(volpathw) / sizeof(WCHAR)) - 1))
throw string_error(IDS_RECV_GETVOLUMEPATHNAME_FAILED, GetLastError(), format_message(GetLastError()).c_str());
clonepar = volpathw;
if (clonepar.substr(clonepar.length() - 1) == L"\\")
clonepar = clonepar.substr(0, clonepar.length() - 1);
clonepar += cloneparw;
clonepar += L"\\";
add_cache_entry(cloneuuid, *clonetransid, clonepar);
}
{
win_handle src = CreateFileW((clonepar + clonepathu).c_str(), FILE_READ_DATA, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_OPEN_REPARSE_POINT | FILE_FLAG_POSIX_SEMANTICS, nullptr);
if (src == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_OPEN_FILE, funcname, (clonepar + clonepathu).c_str(), GetLastError(), format_message(GetLastError()).c_str());
win_handle dest = CreateFileW((subvolpath + pathu).c_str(), FILE_WRITE_DATA, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_OPEN_REPARSE_POINT | FILE_FLAG_POSIX_SEMANTICS, nullptr);
if (dest == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_OPEN_FILE, funcname, pathu.c_str(), GetLastError(), format_message(GetLastError()).c_str());
if (!GetFileSizeEx(dest, &filesize))
throw string_error(IDS_RECV_GETFILESIZEEX_FAILED, GetLastError(), format_message(GetLastError()).c_str());
if ((uint64_t)filesize.QuadPart < *offset + *clonelen) {
LARGE_INTEGER sizeli;
sizeli.QuadPart = *offset + *clonelen;
if (SetFilePointer(dest, sizeli.LowPart, &sizeli.HighPart, FILE_BEGIN) == INVALID_SET_FILE_POINTER)
throw string_error(IDS_RECV_SETFILEPOINTER_FAILED, GetLastError(), format_message(GetLastError()).c_str());
if (!SetEndOfFile(dest))
throw string_error(IDS_RECV_SETENDOFFILE_FAILED, GetLastError(), format_message(GetLastError()).c_str());
}
ded.FileHandle = src;
ded.SourceFileOffset.QuadPart = *cloneoffset;
ded.TargetFileOffset.QuadPart = *offset;
ded.ByteCount.QuadPart = *clonelen;
Status = NtFsControlFile(dest, nullptr, nullptr, nullptr, &iosb, FSCTL_DUPLICATE_EXTENTS_TO_FILE, &ded, sizeof(DUPLICATE_EXTENTS_DATA),
nullptr, 0);
if (!NT_SUCCESS(Status))
throw string_error(IDS_RECV_DUPLICATE_EXTENTS_FAILED, Status, format_ntstatus(Status).c_str());
}
}
void BtrfsRecv::cmd_truncate(HWND hwnd, btrfs_send_command* cmd, uint8_t* data) {
uint64_t* size;
ULONG sizelen;
wstring pathu;
LARGE_INTEGER sizeli;
DWORD att;
{
char* path;
ULONG pathlen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH, (void**)&path, &pathlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path");
pathu = utf8_to_utf16(string(path, pathlen));
}
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_SIZE, (void**)&size, &sizelen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"size");
if (sizelen < sizeof(uint64_t))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"size", sizelen, sizeof(uint64_t));
att = GetFileAttributesW((subvolpath + pathu).c_str());
if (att == INVALID_FILE_ATTRIBUTES)
throw string_error(IDS_RECV_GETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
if (att & FILE_ATTRIBUTE_READONLY) {
if (!SetFileAttributesW((subvolpath + pathu).c_str(), att & ~FILE_ATTRIBUTE_READONLY))
throw string_error(IDS_RECV_SETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
}
{
win_handle h = CreateFileW((subvolpath + pathu).c_str(), FILE_WRITE_DATA, 0, nullptr, OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS, nullptr);
if (h == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_OPEN_FILE, funcname, pathu.c_str(), GetLastError(), format_message(GetLastError()).c_str());
sizeli.QuadPart = *size;
if (SetFilePointer(h, sizeli.LowPart, &sizeli.HighPart, FILE_BEGIN) == INVALID_SET_FILE_POINTER)
throw string_error(IDS_RECV_SETFILEPOINTER_FAILED, GetLastError(), format_message(GetLastError()).c_str());
if (!SetEndOfFile(h))
throw string_error(IDS_RECV_SETENDOFFILE_FAILED, GetLastError(), format_message(GetLastError()).c_str());
}
if (att & FILE_ATTRIBUTE_READONLY) {
if (!SetFileAttributesW((subvolpath + pathu).c_str(), att))
throw string_error(IDS_RECV_SETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
}
}
void BtrfsRecv::cmd_chmod(HWND hwnd, btrfs_send_command* cmd, uint8_t* data) {
win_handle h;
uint32_t* mode;
ULONG modelen;
wstring pathu;
btrfs_set_inode_info bsii;
NTSTATUS Status;
IO_STATUS_BLOCK iosb;
{
char* path;
ULONG pathlen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH, (void**)&path, &pathlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path");
pathu = utf8_to_utf16(string(path, pathlen));
}
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_MODE, (void**)&mode, &modelen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"mode");
if (modelen < sizeof(uint32_t))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"mode", modelen, sizeof(uint32_t));
h = CreateFileW((subvolpath + pathu).c_str(), WRITE_DAC, 0, nullptr, OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS | FILE_OPEN_REPARSE_POINT | FILE_FLAG_POSIX_SEMANTICS, nullptr);
if (h == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_OPEN_FILE, funcname, pathu.c_str(), GetLastError(), format_message(GetLastError()).c_str());
memset(&bsii, 0, sizeof(btrfs_set_inode_info));
bsii.mode_changed = true;
bsii.st_mode = *mode;
Status = NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_SET_INODE_INFO, &bsii, sizeof(btrfs_set_inode_info), nullptr, 0);
if (!NT_SUCCESS(Status))
throw string_error(IDS_RECV_SETINODEINFO_FAILED, Status, format_ntstatus(Status).c_str());
}
void BtrfsRecv::cmd_chown(HWND hwnd, btrfs_send_command* cmd, uint8_t* data) {
win_handle h;
uint32_t *uid, *gid;
ULONG uidlen, gidlen;
wstring pathu;
btrfs_set_inode_info bsii;
{
char* path;
ULONG pathlen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH, (void**)&path, &pathlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path");
pathu = utf8_to_utf16(string(path, pathlen));
}
h = CreateFileW((subvolpath + pathu).c_str(), FILE_WRITE_ATTRIBUTES | WRITE_OWNER | WRITE_DAC, 0, nullptr, OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS | FILE_OPEN_REPARSE_POINT | FILE_FLAG_POSIX_SEMANTICS, nullptr);
if (h == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_OPEN_FILE, funcname, pathu.c_str(), GetLastError(), format_message(GetLastError()).c_str());
memset(&bsii, 0, sizeof(btrfs_set_inode_info));
if (find_tlv(data, cmd->length, BTRFS_SEND_TLV_UID, (void**)&uid, &uidlen)) {
if (uidlen < sizeof(uint32_t))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"uid", uidlen, sizeof(uint32_t));
bsii.uid_changed = true;
bsii.st_uid = *uid;
}
if (find_tlv(data, cmd->length, BTRFS_SEND_TLV_GID, (void**)&gid, &gidlen)) {
if (gidlen < sizeof(uint32_t))
throw string_error(IDS_RECV_SHORT_PARAM, funcname, L"gid", gidlen, sizeof(uint32_t));
bsii.gid_changed = true;
bsii.st_gid = *gid;
}
if (bsii.uid_changed || bsii.gid_changed) {
NTSTATUS Status;
IO_STATUS_BLOCK iosb;
Status = NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_SET_INODE_INFO, &bsii, sizeof(btrfs_set_inode_info), nullptr, 0);
if (!NT_SUCCESS(Status))
throw string_error(IDS_RECV_SETINODEINFO_FAILED, Status, format_ntstatus(Status).c_str());
}
}
static __inline uint64_t unix_time_to_win(BTRFS_TIME* t) {
return (t->seconds * 10000000) + (t->nanoseconds / 100) + 116444736000000000;
}
void BtrfsRecv::cmd_utimes(HWND hwnd, btrfs_send_command* cmd, uint8_t* data) {
wstring pathu;
win_handle h;
FILE_BASIC_INFO fbi;
BTRFS_TIME* time;
ULONG timelen;
IO_STATUS_BLOCK iosb;
NTSTATUS Status;
{
char* path;
ULONG pathlen;
if (!find_tlv(data, cmd->length, BTRFS_SEND_TLV_PATH, (void**)&path, &pathlen))
throw string_error(IDS_RECV_MISSING_PARAM, funcname, L"path");
pathu = utf8_to_utf16(string(path, pathlen));
}
h = CreateFileW((subvolpath + pathu).c_str(), FILE_WRITE_ATTRIBUTES, 0, nullptr, OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS | FILE_OPEN_REPARSE_POINT | FILE_FLAG_POSIX_SEMANTICS, nullptr);
if (h == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_OPEN_FILE, funcname, pathu.c_str(), GetLastError(), format_message(GetLastError()).c_str());
memset(&fbi, 0, sizeof(FILE_BASIC_INFO));
if (find_tlv(data, cmd->length, BTRFS_SEND_TLV_OTIME, (void**)&time, &timelen) && timelen >= sizeof(BTRFS_TIME))
fbi.CreationTime.QuadPart = unix_time_to_win(time);
if (find_tlv(data, cmd->length, BTRFS_SEND_TLV_ATIME, (void**)&time, &timelen) && timelen >= sizeof(BTRFS_TIME))
fbi.LastAccessTime.QuadPart = unix_time_to_win(time);
if (find_tlv(data, cmd->length, BTRFS_SEND_TLV_MTIME, (void**)&time, &timelen) && timelen >= sizeof(BTRFS_TIME))
fbi.LastWriteTime.QuadPart = unix_time_to_win(time);
if (find_tlv(data, cmd->length, BTRFS_SEND_TLV_CTIME, (void**)&time, &timelen) && timelen >= sizeof(BTRFS_TIME))
fbi.ChangeTime.QuadPart = unix_time_to_win(time);
Status = NtSetInformationFile(h, &iosb, &fbi, sizeof(FILE_BASIC_INFO), FileBasicInformation);
if (!NT_SUCCESS(Status))
throw ntstatus_error(Status);
}
static void delete_directory(const wstring& dir) {
WIN32_FIND_DATAW fff;
fff_handle h = FindFirstFileW((dir + L"*").c_str(), &fff);
if (h == INVALID_HANDLE_VALUE)
return;
do {
wstring file;
file = fff.cFileName;
if (file != L"." && file != L"..") {
if (fff.dwFileAttributes & FILE_ATTRIBUTE_READONLY)
SetFileAttributesW((dir + file).c_str(), fff.dwFileAttributes & ~FILE_ATTRIBUTE_READONLY);
if (fff.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
if (!(fff.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT))
delete_directory(dir + file + L"\\");
else
RemoveDirectoryW((dir + file).c_str());
} else
DeleteFileW((dir + file).c_str());
}
} while (FindNextFileW(h, &fff));
RemoveDirectoryW(dir.c_str());
}
static bool check_csum(btrfs_send_command* cmd, uint8_t* data) {
uint32_t crc32 = cmd->csum, calc;
cmd->csum = 0;
calc = calc_crc32c(0, (uint8_t*)cmd, sizeof(btrfs_send_command));
if (cmd->length > 0)
calc = calc_crc32c(calc, data, cmd->length);
return calc == crc32 ? true : false;
}
void BtrfsRecv::do_recv(const win_handle& f, uint64_t* pos, uint64_t size, const win_handle& parent) {
try {
btrfs_send_header header;
bool ended = false;
if (!ReadFile(f, &header, sizeof(btrfs_send_header), nullptr, nullptr))
throw string_error(IDS_RECV_READFILE_FAILED, GetLastError(), format_message(GetLastError()).c_str());
*pos += sizeof(btrfs_send_header);
if (memcmp(header.magic, BTRFS_SEND_MAGIC, sizeof(header.magic)))
throw string_error(IDS_RECV_NOT_A_SEND_STREAM);
if (header.version > 1)
throw string_error(IDS_RECV_UNSUPPORTED_VERSION, header.version);
SendMessageW(GetDlgItem(hwnd, IDC_RECV_PROGRESS), PBM_SETRANGE32, 0, (LPARAM)65536);
lastwritefile = INVALID_HANDLE_VALUE;
lastwritepath = L"";
lastwriteatt = 0;
while (true) {
btrfs_send_command cmd;
uint8_t* data = nullptr;
ULONG progress;
if (cancelling)
break;
progress = (ULONG)((float)*pos * 65536.0f / (float)size);
SendMessageW(GetDlgItem(hwnd, IDC_RECV_PROGRESS), PBM_SETPOS, progress, 0);
if (!ReadFile(f, &cmd, sizeof(btrfs_send_command), nullptr, nullptr)) {
if (GetLastError() != ERROR_HANDLE_EOF)
throw string_error(IDS_RECV_READFILE_FAILED, GetLastError(), format_message(GetLastError()).c_str());
break;
}
*pos += sizeof(btrfs_send_command);
if (cmd.length > 0) {
if (*pos + cmd.length > size)
throw string_error(IDS_RECV_FILE_TRUNCATED);
data = (uint8_t*)malloc(cmd.length);
if (!data)
throw string_error(IDS_OUT_OF_MEMORY);
}
try {
if (data) {
if (!ReadFile(f, data, cmd.length, nullptr, nullptr))
throw string_error(IDS_RECV_READFILE_FAILED, GetLastError(), format_message(GetLastError()).c_str());
*pos += cmd.length;
}
if (!check_csum(&cmd, data))
throw string_error(IDS_RECV_CSUM_ERROR);
if (cmd.cmd == BTRFS_SEND_CMD_END) {
ended = true;
break;
}
if (lastwritefile != INVALID_HANDLE_VALUE && cmd.cmd != BTRFS_SEND_CMD_WRITE) {
if (lastwriteatt & FILE_ATTRIBUTE_READONLY) {
if (!SetFileAttributesW((subvolpath + lastwritepath).c_str(), lastwriteatt))
throw string_error(IDS_RECV_SETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
}
CloseHandle(lastwritefile);
lastwritefile = INVALID_HANDLE_VALUE;
lastwritepath = L"";
lastwriteatt = 0;
}
switch (cmd.cmd) {
case BTRFS_SEND_CMD_SUBVOL:
cmd_subvol(hwnd, &cmd, data, parent);
break;
case BTRFS_SEND_CMD_SNAPSHOT:
cmd_snapshot(hwnd, &cmd, data, parent);
break;
case BTRFS_SEND_CMD_MKFILE:
case BTRFS_SEND_CMD_MKDIR:
case BTRFS_SEND_CMD_MKNOD:
case BTRFS_SEND_CMD_MKFIFO:
case BTRFS_SEND_CMD_MKSOCK:
case BTRFS_SEND_CMD_SYMLINK:
cmd_mkfile(hwnd, &cmd, data);
break;
case BTRFS_SEND_CMD_RENAME:
cmd_rename(hwnd, &cmd, data);
break;
case BTRFS_SEND_CMD_LINK:
cmd_link(hwnd, &cmd, data);
break;
case BTRFS_SEND_CMD_UNLINK:
cmd_unlink(hwnd, &cmd, data);
break;
case BTRFS_SEND_CMD_RMDIR:
cmd_rmdir(hwnd, &cmd, data);
break;
case BTRFS_SEND_CMD_SET_XATTR:
cmd_setxattr(hwnd, &cmd, data);
break;
case BTRFS_SEND_CMD_REMOVE_XATTR:
cmd_removexattr(hwnd, &cmd, data);
break;
case BTRFS_SEND_CMD_WRITE:
cmd_write(hwnd, &cmd, data);
break;
case BTRFS_SEND_CMD_CLONE:
cmd_clone(hwnd, &cmd, data);
break;
case BTRFS_SEND_CMD_TRUNCATE:
cmd_truncate(hwnd, &cmd, data);
break;
case BTRFS_SEND_CMD_CHMOD:
cmd_chmod(hwnd, &cmd, data);
break;
case BTRFS_SEND_CMD_CHOWN:
cmd_chown(hwnd, &cmd, data);
break;
case BTRFS_SEND_CMD_UTIMES:
cmd_utimes(hwnd, &cmd, data);
break;
case BTRFS_SEND_CMD_UPDATE_EXTENT:
// does nothing
break;
default:
throw string_error(IDS_RECV_UNKNOWN_COMMAND, cmd.cmd);
}
} catch (...) {
if (data) free(data);
throw;
}
if (data) free(data);
}
if (lastwritefile != INVALID_HANDLE_VALUE) {
if (lastwriteatt & FILE_ATTRIBUTE_READONLY) {
if (!SetFileAttributesW((subvolpath + lastwritepath).c_str(), lastwriteatt))
throw string_error(IDS_RECV_SETFILEATTRIBUTES_FAILED, GetLastError(), format_message(GetLastError()).c_str());
}
CloseHandle(lastwritefile);
}
if (!ended && !cancelling)
throw string_error(IDS_RECV_FILE_TRUNCATED);
if (!cancelling) {
NTSTATUS Status;
IO_STATUS_BLOCK iosb;
btrfs_received_subvol brs;
brs.generation = stransid;
brs.uuid = subvol_uuid;
Status = NtFsControlFile(dir, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_RECEIVED_SUBVOL, &brs, sizeof(btrfs_received_subvol),
nullptr, 0);
if (!NT_SUCCESS(Status))
throw string_error(IDS_RECV_RECEIVED_SUBVOL_FAILED, Status, format_ntstatus(Status).c_str());
}
CloseHandle(dir);
if (master != INVALID_HANDLE_VALUE)
CloseHandle(master);
} catch (...) {
if (subvolpath != L"") {
ULONG attrib;
attrib = GetFileAttributesW(subvolpath.c_str());
attrib &= ~FILE_ATTRIBUTE_READONLY;
if (SetFileAttributesW(subvolpath.c_str(), attrib))
delete_directory(subvolpath);
}
throw;
}
}
#if defined(_X86_) || defined(_AMD64_)
static void check_cpu() {
bool have_sse42 = false;
#ifndef _MSC_VER
{
uint32_t eax, ebx, ecx, edx;
__cpuid(1, eax, ebx, ecx, edx);
if (__get_cpuid(1, &eax, &ebx, &ecx, &edx))
have_sse42 = ecx & bit_SSE4_2;
}
#else
{
int cpu_info[4];
__cpuid(cpu_info, 1);
have_sse42 = (unsigned int)cpu_info[2] & (1 << 20);
}
#endif
if (have_sse42)
calc_crc32c = calc_crc32c_hw;
}
#endif
DWORD BtrfsRecv::recv_thread() {
LARGE_INTEGER size;
uint64_t pos = 0;
bool b = true;
running = true;
try {
win_handle f = CreateFileW(streamfile.c_str(), GENERIC_READ, 0, nullptr, OPEN_EXISTING, 0, nullptr);
if (f == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_OPEN_FILE, funcname, streamfile.c_str(), GetLastError(), format_message(GetLastError()).c_str());
if (!GetFileSizeEx(f, &size))
throw string_error(IDS_RECV_GETFILESIZEEX_FAILED, GetLastError(), format_message(GetLastError()).c_str());
{
win_handle parent = CreateFileW(dirpath.c_str(), FILE_ADD_SUBDIRECTORY | FILE_ADD_FILE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS, nullptr);
if (parent == INVALID_HANDLE_VALUE)
throw string_error(IDS_RECV_CANT_OPEN_PATH, dirpath.c_str(), GetLastError(), format_message(GetLastError()).c_str());
do {
do_recv(f, &pos, size.QuadPart, parent);
} while (pos < (uint64_t)size.QuadPart);
}
} catch (const exception& e) {
auto msg = utf8_to_utf16(e.what());
SetDlgItemTextW(hwnd, IDC_RECV_MSG, msg.c_str());
SendMessageW(GetDlgItem(hwnd, IDC_RECV_PROGRESS), PBM_SETSTATE, PBST_ERROR, 0);
b = false;
}
if (b && hwnd) {
wstring s;
SendMessageW(GetDlgItem(hwnd, IDC_RECV_PROGRESS), PBM_SETPOS, 65536, 0);
if (num_received == 1) {
load_string(module, IDS_RECV_SUCCESS, s);
SetDlgItemTextW(hwnd, IDC_RECV_MSG, s.c_str());
} else {
wstring t;
load_string(module, IDS_RECV_SUCCESS_PLURAL, s);
wstring_sprintf(t, s, num_received);
SetDlgItemTextW(hwnd, IDC_RECV_MSG, t.c_str());
}
load_string(module, IDS_RECV_BUTTON_OK, s);
SetDlgItemTextW(hwnd, IDCANCEL, s.c_str());
}
thread = nullptr;
running = false;
return 0;
}
static DWORD WINAPI global_recv_thread(LPVOID lpParameter) {
BtrfsRecv* br = (BtrfsRecv*)lpParameter;
return br->recv_thread();
}
INT_PTR CALLBACK BtrfsRecv::RecvProgressDlgProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam) {
switch (uMsg) {
case WM_INITDIALOG:
try {
this->hwnd = hwndDlg;
thread = CreateThread(nullptr, 0, global_recv_thread, this, 0, nullptr);
if (!thread)
throw string_error(IDS_RECV_CREATETHREAD_FAILED, GetLastError(), format_message(GetLastError()).c_str());
} catch (const exception& e) {
auto msg = utf8_to_utf16(e.what());
SetDlgItemTextW(hwnd, IDC_RECV_MSG, msg.c_str());
SendMessageW(GetDlgItem(hwnd, IDC_RECV_PROGRESS), PBM_SETSTATE, PBST_ERROR, 0);
}
break;
case WM_COMMAND:
switch (HIWORD(wParam)) {
case BN_CLICKED:
switch (LOWORD(wParam)) {
case IDOK:
case IDCANCEL:
if (running) {
wstring s;
cancelling = true;
if (!load_string(module, IDS_RECV_CANCELLED, s))
throw last_error(GetLastError());
SetDlgItemTextW(hwnd, IDC_RECV_MSG, s.c_str());
SendMessageW(GetDlgItem(hwnd, IDC_RECV_PROGRESS), PBM_SETPOS, 0, 0);
if (!load_string(module, IDS_RECV_BUTTON_OK, s))
throw last_error(GetLastError());
SetDlgItemTextW(hwnd, IDCANCEL, s.c_str());
} else
EndDialog(hwndDlg, 1);
return true;
}
break;
}
break;
}
return false;
}
static INT_PTR CALLBACK stub_RecvProgressDlgProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam) {
BtrfsRecv* br;
if (uMsg == WM_INITDIALOG) {
SetWindowLongPtrW(hwndDlg, GWLP_USERDATA, (LONG_PTR)lParam);
br = (BtrfsRecv*)lParam;
} else {
br = (BtrfsRecv*)GetWindowLongPtrW(hwndDlg, GWLP_USERDATA);
}
if (br)
return br->RecvProgressDlgProc(hwndDlg, uMsg, wParam, lParam);
else
return false;
}
void BtrfsRecv::Open(HWND hwnd, const wstring& file, const wstring& path, bool quiet) {
streamfile = file;
dirpath = path;
subvolpath = L"";
#if defined(_X86_) || defined(_AMD64_)
check_cpu();
#endif
if (quiet)
recv_thread();
else {
if (DialogBoxParamW(module, MAKEINTRESOURCEW(IDD_RECV_PROGRESS), hwnd, stub_RecvProgressDlgProc, (LPARAM)this) <= 0)
throw last_error(GetLastError());
}
}
extern "C" void CALLBACK RecvSubvolGUIW(HWND hwnd, HINSTANCE hinst, LPWSTR lpszCmdLine, int nCmdShow) {
try {
OPENFILENAMEW ofn;
WCHAR file[MAX_PATH];
win_handle token;
TOKEN_PRIVILEGES* tp;
LUID luid;
ULONG tplen;
set_dpi_aware();
if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &token))
throw last_error(GetLastError());
tplen = offsetof(TOKEN_PRIVILEGES, Privileges[0]) + (3 * sizeof(LUID_AND_ATTRIBUTES));
tp = (TOKEN_PRIVILEGES*)malloc(tplen);
if (!tp)
throw string_error(IDS_OUT_OF_MEMORY);
tp->PrivilegeCount = 3;
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warray-bounds"
#endif // __clang__
if (!LookupPrivilegeValueW(nullptr, L"SeManageVolumePrivilege", &luid)) {
free(tp);
throw last_error(GetLastError());
}
tp->Privileges[0].Luid = luid;
tp->Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
if (!LookupPrivilegeValueW(nullptr, L"SeSecurityPrivilege", &luid)) {
free(tp);
throw last_error(GetLastError());
}
tp->Privileges[1].Luid = luid;
tp->Privileges[1].Attributes = SE_PRIVILEGE_ENABLED;
if (!LookupPrivilegeValueW(nullptr, L"SeRestorePrivilege", &luid)) {
free(tp);
throw last_error(GetLastError());
}
tp->Privileges[2].Luid = luid;
tp->Privileges[2].Attributes = SE_PRIVILEGE_ENABLED;
if (!AdjustTokenPrivileges(token, false, tp, tplen, nullptr, nullptr)) {
free(tp);
throw last_error(GetLastError());
}
#ifdef __clang__
#pragma clang diagnostic pop
#endif // __clang__
file[0] = 0;
memset(&ofn, 0, sizeof(OPENFILENAMEW));
ofn.lStructSize = sizeof(OPENFILENAMEW);
ofn.hwndOwner = hwnd;
ofn.hInstance = module;
ofn.lpstrFile = file;
ofn.nMaxFile = sizeof(file) / sizeof(WCHAR);
ofn.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY;
if (GetOpenFileNameW(&ofn)) {
BtrfsRecv recv;
recv.Open(hwnd, file, lpszCmdLine, false);
}
free(tp);
} catch (const exception& e) {
error_message(hwnd, e.what());
}
}
extern "C" void CALLBACK RecvSubvolW(HWND hwnd, HINSTANCE hinst, LPWSTR lpszCmdLine, int nCmdShow) {
try {
vector<wstring> args;
command_line_to_args(lpszCmdLine, args);
if (args.size() >= 2) {
win_handle token;
TOKEN_PRIVILEGES* tp;
ULONG tplen;
LUID luid;
if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &token))
return;
tplen = offsetof(TOKEN_PRIVILEGES, Privileges[0]) + (3 * sizeof(LUID_AND_ATTRIBUTES));
tp = (TOKEN_PRIVILEGES*)malloc(tplen);
if (!tp)
return;
tp->PrivilegeCount = 3;
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warray-bounds"
#endif // __clang__
if (!LookupPrivilegeValueW(nullptr, L"SeManageVolumePrivilege", &luid)) {
free(tp);
return;
}
tp->Privileges[0].Luid = luid;
tp->Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
if (!LookupPrivilegeValueW(nullptr, L"SeSecurityPrivilege", &luid)) {
free(tp);
return;
}
tp->Privileges[1].Luid = luid;
tp->Privileges[1].Attributes = SE_PRIVILEGE_ENABLED;
if (!LookupPrivilegeValueW(nullptr, L"SeRestorePrivilege", &luid)) {
free(tp);
return;
}
tp->Privileges[2].Luid = luid;
tp->Privileges[2].Attributes = SE_PRIVILEGE_ENABLED;
#ifdef __clang__
#pragma clang diagnostic pop
#endif // __clang__
if (!AdjustTokenPrivileges(token, false, tp, tplen, nullptr, nullptr)) {
free(tp);
return;
}
free(tp);
BtrfsRecv br;
br.Open(nullptr, args[0], args[1], true);
}
} catch (const exception& e) {
cerr << "Error: " << e.what() << endl;
}
}
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