15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/file_util.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <windows.h> 8f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#include <io.h> 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <psapi.h> 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <shellapi.h> 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <shlobj.h> 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <time.h> 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include <algorithm> 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <limits> 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <string> 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "base/files/file_enumerator.h" 192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/files/file_path.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/metrics/histogram.h" 2258e6fbe4ee35d65e14b626c557d37565bf8ad179Ben Murdoch#include "base/process/process_handle.h" 237d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles)#include "base/rand_util.h" 242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/strings/string_number_conversions.h" 255e3f23d412006dc4db4e659864679f29341e113fTorne (Richard Coles)#include "base/strings/string_util.h" 26868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/strings/utf_string_conversions.h" 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/threading/thread_restrictions.h" 28eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#include "base/time/time.h" 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/win/scoped_handle.h" 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/win/windows_version.h" 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)namespace base { 33c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const DWORD kFileShareAll = 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE; 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 41eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen MurdochFilePath MakeAbsoluteFilePath(const FilePath& input) { 42eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch ThreadRestrictions::AssertIOAllowed(); 43eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch wchar_t file_path[MAX_PATH]; 44eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch if (!_wfullpath(file_path, input.value().c_str(), MAX_PATH)) 45eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch return FilePath(); 46eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch return FilePath(file_path); 47eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch} 48eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 497dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdochbool DeleteFile(const FilePath& path, bool recursive) { 50eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch ThreadRestrictions::AssertIOAllowed(); 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (path.value().length() >= MAX_PATH) 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // On XP SHFileOperation will return ERROR_ACCESS_DENIED instead of 56cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // ERROR_FILE_NOT_FOUND, so just shortcut this here. 57cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if (path.empty()) 58cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return true; 59cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!recursive) { 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If not recursing, then first check to see if |path| is a directory. 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If it is, then remove it with RemoveDirectory. 635d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) File::Info file_info; 64a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) if (GetFileInfo(path, &file_info) && file_info.is_directory) 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return RemoveDirectory(path.value().c_str()) != 0; 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Otherwise, it's a file, wildcard or non-existant. Try DeleteFile first 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // because it should be faster. If DeleteFile fails, then we fall through 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to SHFileOperation, which will do the right thing. 707dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch if (::DeleteFile(path.value().c_str()) != 0) 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // SHFILEOPSTRUCT wants the path to be terminated with two NULLs, 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // so we have to use wcscpy because wcscpy_s writes non-NULLs 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // into the rest of the buffer. 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) wchar_t double_terminated_path[MAX_PATH + 1] = {0}; 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#pragma warning(suppress:4996) // don't complain about wcscpy deprecation 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) wcscpy(double_terminated_path, path.value().c_str()); 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SHFILEOPSTRUCT file_operation = {0}; 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) file_operation.wFunc = FO_DELETE; 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) file_operation.pFrom = double_terminated_path; 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) file_operation.fFlags = FOF_NOERRORUI | FOF_SILENT | FOF_NOCONFIRMATION; 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!recursive) 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) file_operation.fFlags |= FOF_NORECURSION | FOF_FILESONLY; 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int err = SHFileOperation(&file_operation); 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Since we're passing flags to the operation telling it to be silent, 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // it's possible for the operation to be aborted/cancelled without err 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // being set (although MSDN doesn't give any scenarios for how this can 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // happen). See MSDN for SHFileOperation and SHFILEOPTSTRUCT. 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (file_operation.fAnyOperationsAborted) 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Some versions of Windows return ERROR_FILE_NOT_FOUND (0x2) when deleting 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // an empty directory and some return 0x402 when they should be returning 98cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // ERROR_FILE_NOT_FOUND. MSDN says Vista and up won't return 0x402. Windows 7 99cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // can return DE_INVALIDFILES (0x7C) for nonexistent directories. 100cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return (err == 0 || err == ERROR_FILE_NOT_FOUND || err == 0x402 || 101cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) err == 0x7C); 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1047dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdochbool DeleteFileAfterReboot(const FilePath& path) { 105eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch ThreadRestrictions::AssertIOAllowed(); 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (path.value().length() >= MAX_PATH) 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return MoveFileEx(path.value().c_str(), NULL, 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MOVEFILE_DELAY_UNTIL_REBOOT | 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) MOVEFILE_REPLACE_EXISTING) != FALSE; 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdochbool ReplaceFile(const FilePath& from_path, 116eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch const FilePath& to_path, 1175d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) File::Error* error) { 118eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch ThreadRestrictions::AssertIOAllowed(); 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Try a simple move first. It will only succeed when |to_path| doesn't 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // already exist. 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (::MoveFile(from_path.value().c_str(), to_path.value().c_str())) 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Try the full-blown replace if the move fails, as ReplaceFile will only 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // succeed when |to_path| does exist. When writing to a network share, we may 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // not be able to change the ACLs. Ignore ACL errors then 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // (REPLACEFILE_IGNORE_MERGE_ERRORS). 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (::ReplaceFile(to_path.value().c_str(), from_path.value().c_str(), NULL, 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) REPLACEFILE_IGNORE_MERGE_ERRORS, NULL, NULL)) { 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 131b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) if (error) 1325d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) *error = File::OSErrorToFileError(GetLastError()); 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool CopyDirectory(const FilePath& from_path, const FilePath& to_path, 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool recursive) { 1385d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // NOTE(maruel): Previous version of this function used to call 1395d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // SHFileOperation(). This used to copy the file attributes and extended 1405d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // attributes, OLE structured storage, NTFS file system alternate data 1415d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // streams, SECURITY_DESCRIPTOR. In practice, this is not what we want, we 1425d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // want the containing directory to propagate its SECURITY_DESCRIPTOR. 1437dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch ThreadRestrictions::AssertIOAllowed(); 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1455d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // NOTE: I suspect we could support longer paths, but that would involve 1465d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // analyzing all our usage of files. 1475d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (from_path.value().length() >= MAX_PATH || 1485d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) to_path.value().length() >= MAX_PATH) { 1495d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return false; 1505d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 1515d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 1525d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // This function does not properly handle destinations within the source. 1535d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) FilePath real_to_path = to_path; 1545d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (PathExists(real_to_path)) { 1555d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) real_to_path = MakeAbsoluteFilePath(real_to_path); 1565d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (real_to_path.empty()) 1575d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return false; 1585d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } else { 1595d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) real_to_path = MakeAbsoluteFilePath(real_to_path.DirName()); 1605d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (real_to_path.empty()) 1615d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return false; 1625d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 1635d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) FilePath real_from_path = MakeAbsoluteFilePath(from_path); 1645d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (real_from_path.empty()) 1655d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return false; 1665d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (real_to_path.value().size() >= real_from_path.value().size() && 1675d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) real_to_path.value().compare(0, real_from_path.value().size(), 1685d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) real_from_path.value()) == 0) { 1695d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return false; 1705d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 1715d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 1725d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) int traverse_type = FileEnumerator::FILES; 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (recursive) 1745d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) traverse_type |= FileEnumerator::DIRECTORIES; 1755d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) FileEnumerator traversal(from_path, recursive, traverse_type); 1765d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 1775d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (!PathExists(from_path)) { 1785d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) DLOG(ERROR) << "CopyDirectory() couldn't stat source directory: " 1795d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) << from_path.value().c_str(); 1805d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return false; 1815d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 1825d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // TODO(maruel): This is not necessary anymore. 1835d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) DCHECK(recursive || DirectoryExists(from_path)); 1845d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 1855d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) FilePath current = from_path; 1865d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) bool from_is_dir = DirectoryExists(from_path); 1875d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) bool success = true; 1885d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) FilePath from_path_base = from_path; 1895d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (recursive && DirectoryExists(to_path)) { 1905d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // If the destination already exists and is a directory, then the 1915d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // top level of source needs to be copied. 1925d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) from_path_base = from_path.DirName(); 1935d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1955d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) while (success && !current.empty()) { 1965d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // current is the source path, including from_path, so append 1975d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // the suffix after from_path to to_path to create the target_path. 1985d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) FilePath target_path(to_path); 1995d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (from_path_base != current) { 2005d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (!from_path_base.AppendRelativePath(current, &target_path)) { 2015d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) success = false; 2025d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) break; 2035d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 2045d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2065d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (from_is_dir) { 2075d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (!DirectoryExists(target_path) && 2085d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) !::CreateDirectory(target_path.value().c_str(), NULL)) { 2095d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) DLOG(ERROR) << "CopyDirectory() couldn't create directory: " 2105d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) << target_path.value().c_str(); 2115d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) success = false; 2125d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 2135d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } else if (!internal::CopyFileUnsafe(current, target_path)) { 2145d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) DLOG(ERROR) << "CopyDirectory() couldn't create file: " 2155d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) << target_path.value().c_str(); 2165d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) success = false; 2175d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 2185d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 2195d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) current = traversal.Next(); 2205d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (!current.empty()) 2215d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) from_is_dir = traversal.GetInfo().IsDirectory(); 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2245d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return success; 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool PathExists(const FilePath& path) { 2287dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch ThreadRestrictions::AssertIOAllowed(); 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (GetFileAttributes(path.value().c_str()) != INVALID_FILE_ATTRIBUTES); 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool PathIsWritable(const FilePath& path) { 2337dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch ThreadRestrictions::AssertIOAllowed(); 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) HANDLE dir = 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CreateFile(path.value().c_str(), FILE_ADD_FILE, kFileShareAll, 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL); 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (dir == INVALID_HANDLE_VALUE) 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CloseHandle(dir); 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool DirectoryExists(const FilePath& path) { 2467dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch ThreadRestrictions::AssertIOAllowed(); 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD fileattr = GetFileAttributes(path.value().c_str()); 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (fileattr != INVALID_FILE_ATTRIBUTES) 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (fileattr & FILE_ATTRIBUTE_DIRECTORY) != 0; 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool GetTempDir(FilePath* path) { 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) wchar_t temp_path[MAX_PATH + 1]; 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD path_len = ::GetTempPath(MAX_PATH, temp_path); 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (path_len >= MAX_PATH || path_len <= 0) 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(evanm): the old behavior of this function was to always strip the 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // trailing slash. We duplicate this here, but it shouldn't be necessary 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // when everyone is using the appropriate FilePath APIs. 2615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *path = FilePath(temp_path).StripTrailingSeparators(); 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)FilePath GetHomeDir() { 266a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) char16 result[MAX_PATH]; 267a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) if (SUCCEEDED(SHGetFolderPath(NULL, CSIDL_PROFILE, NULL, SHGFP_TYPE_CURRENT, 268a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) result)) && 269a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) result[0]) { 270a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) return FilePath(result); 271a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) } 272a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 273a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) // Fall back to the temporary directory on failure. 274a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) FilePath temp; 275a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) if (GetTempDir(&temp)) 276a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) return temp; 277a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 278a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) // Last resort. 279a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) return FilePath(L"C:\\"); 280a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)} 281a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool CreateTemporaryFile(FilePath* path) { 283a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ThreadRestrictions::AssertIOAllowed(); 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FilePath temp_file; 2865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!GetTempDir(path)) 2885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (CreateTemporaryFileInDir(*path, &temp_file)) { 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *path = temp_file; 2925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 2935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// On POSIX we have semantics to create and open a temporary file 2995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// atomically. 3005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// TODO(jrg): is there equivalent call to use on Windows instead of 3015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// going 2-step? 3025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)FILE* CreateAndOpenTemporaryFileInDir(const FilePath& dir, FilePath* path) { 303a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ThreadRestrictions::AssertIOAllowed(); 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!CreateTemporaryFileInDir(dir, path)) { 3055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 3065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Open file in binary mode, to avoid problems with fwrite. On Windows 3085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // it replaces \n's with \r\n's, which may surprise you. 3095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Reference: http://msdn.microsoft.com/en-us/library/h9t88zwz(VS.71).aspx 3105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return OpenFile(*path, "wb+"); 3115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 313a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles)bool CreateTemporaryFileInDir(const FilePath& dir, FilePath* temp_file) { 314a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ThreadRestrictions::AssertIOAllowed(); 3155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) wchar_t temp_name[MAX_PATH + 1]; 3175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!GetTempFileName(dir.value().c_str(), L"", 0, temp_name)) { 319a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) DPLOG(WARNING) << "Failed to get temporary file name in " 320a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) << UTF16ToUTF8(dir.value()); 3215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 3225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) wchar_t long_temp_name[MAX_PATH + 1]; 3252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DWORD long_name_len = GetLongPathName(temp_name, long_temp_name, MAX_PATH); 3262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (long_name_len > MAX_PATH || long_name_len == 0) { 3272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // GetLongPathName() failed, but we still have a temporary file. 3282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) *temp_file = FilePath(temp_name); 3292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return true; 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) FilePath::StringType long_temp_name_str; 3332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) long_temp_name_str.assign(long_temp_name, long_name_len); 3342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) *temp_file = FilePath(long_temp_name_str); 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 3365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool CreateTemporaryDirInDir(const FilePath& base_dir, 3395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const FilePath::StringType& prefix, 3405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FilePath* new_dir) { 341a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ThreadRestrictions::AssertIOAllowed(); 3425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FilePath path_to_create; 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (int count = 0; count < 50; ++count) { 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Try create a new temporary directory with random generated name. If 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the one exists, keep trying another path name until we reach some limit. 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) string16 new_dir_name; 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_dir_name.assign(prefix); 350a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) new_dir_name.append(IntToString16(GetCurrentProcId())); 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new_dir_name.push_back('_'); 352a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) new_dir_name.append(IntToString16(RandInt(0, kint16max))); 3535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) path_to_create = base_dir.Append(new_dir_name); 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (::CreateDirectory(path_to_create.value().c_str(), NULL)) { 3565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *new_dir = path_to_create; 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool CreateNewTempDirectory(const FilePath::StringType& prefix, 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FilePath* new_temp_path) { 366a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ThreadRestrictions::AssertIOAllowed(); 3675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FilePath system_temp_dir; 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!GetTempDir(&system_temp_dir)) 3705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return CreateTemporaryDirInDir(system_temp_dir, prefix, new_temp_path); 3735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 375868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)bool CreateDirectoryAndGetError(const FilePath& full_path, 3765d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) File::Error* error) { 377a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ThreadRestrictions::AssertIOAllowed(); 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If the path exists, we've succeeded if it's a directory, failed otherwise. 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const wchar_t* full_path_str = full_path.value().c_str(); 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD fileattr = ::GetFileAttributes(full_path_str); 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (fileattr != INVALID_FILE_ATTRIBUTES) { 3835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if ((fileattr & FILE_ATTRIBUTE_DIRECTORY) != 0) { 3845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DVLOG(1) << "CreateDirectory(" << full_path_str << "), " 3855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) << "directory already exists."; 3865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 3875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DLOG(WARNING) << "CreateDirectory(" << full_path_str << "), " 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) << "conflicts with existing file."; 390eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch if (error) { 3915d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) *error = File::FILE_ERROR_NOT_A_DIRECTORY; 392eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch } 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 3945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Invariant: Path does not exist as file or directory. 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Attempt to create the parent recursively. This will immediately return 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // true if it already exists, otherwise will create all required parent 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // directories starting with the highest-level missing parent. 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FilePath parent_path(full_path.DirName()); 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (parent_path.value() == full_path.value()) { 403eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch if (error) { 4045d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) *error = File::FILE_ERROR_NOT_FOUND; 405eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch } 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 408868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (!CreateDirectoryAndGetError(parent_path, error)) { 4095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DLOG(WARNING) << "Failed to create one of the parent directories."; 410eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch if (error) { 4115d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) DCHECK(*error != File::FILE_OK); 412eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch } 4135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 4145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!::CreateDirectory(full_path_str, NULL)) { 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD error_code = ::GetLastError(); 4185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (error_code == ERROR_ALREADY_EXISTS && DirectoryExists(full_path)) { 4195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This error code ERROR_ALREADY_EXISTS doesn't indicate whether we 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // were racing with someone creating the same directory, or a file 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // with the same path. If DirectoryExists() returns true, we lost the 4225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // race to create the same directory. 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 4245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 425868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (error) 4265d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) *error = File::OSErrorToFileError(error_code); 4275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DLOG(WARNING) << "Failed to create directory " << full_path_str 4285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) << ", last error is " << error_code << "."; 4295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 4305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 4325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 4335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 436a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles)bool NormalizeFilePath(const FilePath& path, FilePath* real_path) { 437a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ThreadRestrictions::AssertIOAllowed(); 438a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) FilePath mapped_file; 439a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) if (!NormalizeToNativeFilePath(path, &mapped_file)) 440a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) return false; 441a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // NormalizeToNativeFilePath() will return a path that starts with 442a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // "\Device\Harddisk...". Helper DevicePathToDriveLetterPath() 443a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // will find a drive letter which maps to the path's device, so 444a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // that we return a path starting with a drive letter. 445a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) return DevicePathToDriveLetterPath(mapped_file, real_path); 446a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles)} 447a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) 448a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles)bool DevicePathToDriveLetterPath(const FilePath& nt_device_path, 449a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) FilePath* out_drive_letter_path) { 450a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ThreadRestrictions::AssertIOAllowed(); 451a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) 452a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // Get the mapping of drive letters to device paths. 453a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) const int kDriveMappingSize = 1024; 454a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) wchar_t drive_mapping[kDriveMappingSize] = {'\0'}; 455a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) if (!::GetLogicalDriveStrings(kDriveMappingSize - 1, drive_mapping)) { 456a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) DLOG(ERROR) << "Failed to get drive mapping."; 457a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) return false; 458a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) } 459a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) 460a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // The drive mapping is a sequence of null terminated strings. 461a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // The last string is empty. 462a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) wchar_t* drive_map_ptr = drive_mapping; 463a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) wchar_t device_path_as_string[MAX_PATH]; 464a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) wchar_t drive[] = L" :"; 465a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) 466a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // For each string in the drive mapping, get the junction that links 467a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // to it. If that junction is a prefix of |device_path|, then we 468a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // know that |drive| is the real path prefix. 469a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) while (*drive_map_ptr) { 470a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) drive[0] = drive_map_ptr[0]; // Copy the drive letter. 471a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) 472a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) if (QueryDosDevice(drive, device_path_as_string, MAX_PATH)) { 473a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) FilePath device_path(device_path_as_string); 474a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) if (device_path == nt_device_path || 475a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) device_path.IsParent(nt_device_path)) { 476a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) *out_drive_letter_path = FilePath(drive + 477a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) nt_device_path.value().substr(wcslen(device_path_as_string))); 478a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) return true; 479a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) } 480a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) } 481a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // Move to the next drive letter string, which starts one 482a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // increment after the '\0' that terminates the current string. 483a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) while (*drive_map_ptr++); 484a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) } 485a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) 486a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // No drive matched. The path does not start with a device junction 487a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // that is mounted as a drive letter. This means there is no drive 488a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // letter path to the volume that holds |device_path|, so fail. 489a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) return false; 490a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles)} 491a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) 492a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles)bool NormalizeToNativeFilePath(const FilePath& path, FilePath* nt_path) { 493a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ThreadRestrictions::AssertIOAllowed(); 494a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // In Vista, GetFinalPathNameByHandle() would give us the real path 495a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // from a file handle. If we ever deprecate XP, consider changing the 496a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // code below to a call to GetFinalPathNameByHandle(). The method this 497a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // function uses is explained in the following msdn article: 498a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // http://msdn.microsoft.com/en-us/library/aa366789(VS.85).aspx 499a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) base::win::ScopedHandle file_handle( 500a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ::CreateFile(path.value().c_str(), 501a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) GENERIC_READ, 502a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) kFileShareAll, 503a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) NULL, 504a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) OPEN_EXISTING, 505a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) FILE_ATTRIBUTE_NORMAL, 506a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) NULL)); 507a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) if (!file_handle) 508a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) return false; 509a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) 510a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // Create a file mapping object. Can't easily use MemoryMappedFile, because 511a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // we only map the first byte, and need direct access to the handle. You can 512a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // not map an empty file, this call fails in that case. 513a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) base::win::ScopedHandle file_map_handle( 514a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ::CreateFileMapping(file_handle.Get(), 515a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) NULL, 516a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) PAGE_READONLY, 517a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) 0, 518a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) 1, // Just one byte. No need to look at the data. 519a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) NULL)); 520a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) if (!file_map_handle) 521a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) return false; 522a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) 523a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // Use a view of the file to get the path to the file. 524a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) void* file_view = MapViewOfFile(file_map_handle.Get(), 525a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) FILE_MAP_READ, 0, 0, 1); 526a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) if (!file_view) 527a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) return false; 528a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) 529a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // The expansion of |path| into a full path may make it longer. 530a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // GetMappedFileName() will fail if the result is longer than MAX_PATH. 531a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // Pad a bit to be safe. If kMaxPathLength is ever changed to be less 532a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // than MAX_PATH, it would be nessisary to test that GetMappedFileName() 533a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // not return kMaxPathLength. This would mean that only part of the 534a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) // path fit in |mapped_file_path|. 535a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) const int kMaxPathLength = MAX_PATH + 10; 536a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) wchar_t mapped_file_path[kMaxPathLength]; 537a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) bool success = false; 538a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) HANDLE cp = GetCurrentProcess(); 539a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) if (::GetMappedFileNameW(cp, file_view, mapped_file_path, kMaxPathLength)) { 540a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) *nt_path = FilePath(mapped_file_path); 541a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) success = true; 542a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) } 543a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ::UnmapViewOfFile(file_view); 544a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) return success; 545a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles)} 546a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) 5475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// TODO(rkc): Work out if we want to handle NTFS junctions here or not, handle 5485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// them if we do decide to. 5495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool IsLink(const FilePath& file_path) { 5505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 5515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5535d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)bool GetFileInfo(const FilePath& file_path, File::Info* results) { 554a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ThreadRestrictions::AssertIOAllowed(); 5555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WIN32_FILE_ATTRIBUTE_DATA attr; 5575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!GetFileAttributesEx(file_path.value().c_str(), 5585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GetFileExInfoStandard, &attr)) { 5595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 5605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ULARGE_INTEGER size; 5635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size.HighPart = attr.nFileSizeHigh; 5645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size.LowPart = attr.nFileSizeLow; 5655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) results->size = size.QuadPart; 5665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) results->is_directory = 5685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (attr.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0; 569a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) results->last_modified = Time::FromFileTime(attr.ftLastWriteTime); 570a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) results->last_accessed = Time::FromFileTime(attr.ftLastAccessTime); 571a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) results->creation_time = Time::FromFileTime(attr.ftCreationTime); 5725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 5745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)FILE* OpenFile(const FilePath& filename, const char* mode) { 577a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ThreadRestrictions::AssertIOAllowed(); 5785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::wstring w_mode = ASCIIToWide(std::string(mode)); 5795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return _wfsopen(filename.value().c_str(), w_mode.c_str(), _SH_DENYNO); 5805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 582f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)FILE* FileToFILE(File file, const char* mode) { 583f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) if (!file.IsValid()) 584f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) return NULL; 585f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) int fd = 586f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) _open_osfhandle(reinterpret_cast<intptr_t>(file.GetPlatformFile()), 0); 587f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) if (fd < 0) 588f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) return NULL; 589f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) file.TakePlatformFile(); 590f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) FILE* stream = _fdopen(fd, mode); 591f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) if (!stream) 592f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) _close(fd); 593f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) return stream; 594f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)} 595f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 5960529e5d033099cbfc42635f6f6183833b09dff6eBen Murdochint ReadFile(const FilePath& filename, char* data, int max_size) { 597a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) ThreadRestrictions::AssertIOAllowed(); 5985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::win::ScopedHandle file(CreateFile(filename.value().c_str(), 5995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GENERIC_READ, 6005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FILE_SHARE_READ | FILE_SHARE_WRITE, 6015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NULL, 6025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OPEN_EXISTING, 6035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FILE_FLAG_SEQUENTIAL_SCAN, 6045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NULL)); 6055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!file) 6065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return -1; 6075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD read; 6090529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch if (::ReadFile(file, data, max_size, &read, NULL)) 6105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return read; 6110529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch 6125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return -1; 6135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int WriteFile(const FilePath& filename, const char* data, int size) { 616a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) ThreadRestrictions::AssertIOAllowed(); 6175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::win::ScopedHandle file(CreateFile(filename.value().c_str(), 6185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GENERIC_WRITE, 6195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 0, 6205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NULL, 6215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CREATE_ALWAYS, 6225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 0, 6235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NULL)); 6245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!file) { 625cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) DPLOG(WARNING) << "CreateFile failed for path " 626cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) << UTF16ToUTF8(filename.value()); 6275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return -1; 6285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD written; 6315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) BOOL result = ::WriteFile(file, data, size, &written, NULL); 6325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (result && static_cast<int>(written) == size) 6335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return written; 6345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!result) { 6365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // WriteFile failed. 637cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) DPLOG(WARNING) << "writing file " << UTF16ToUTF8(filename.value()) 638cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) << " failed"; 6395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 6405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Didn't write all the bytes. 6415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DLOG(WARNING) << "wrote" << written << " bytes to " 642a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) << UTF16ToUTF8(filename.value()) << " expected " << size; 6435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return -1; 6455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int AppendToFile(const FilePath& filename, const char* data, int size) { 648a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) ThreadRestrictions::AssertIOAllowed(); 6495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::win::ScopedHandle file(CreateFile(filename.value().c_str(), 6505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FILE_APPEND_DATA, 6515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 0, 6525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NULL, 6535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OPEN_EXISTING, 6545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 0, 6555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NULL)); 6565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!file) { 657cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) DPLOG(WARNING) << "CreateFile failed for path " 658cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) << UTF16ToUTF8(filename.value()); 6595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return -1; 6605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD written; 6635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) BOOL result = ::WriteFile(file, data, size, &written, NULL); 6645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (result && static_cast<int>(written) == size) 6655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return written; 6665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!result) { 6685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // WriteFile failed. 669cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) DPLOG(WARNING) << "writing file " << UTF16ToUTF8(filename.value()) 670cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) << " failed"; 6715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 6725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Didn't write all the bytes. 6735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DLOG(WARNING) << "wrote" << written << " bytes to " 674a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) << UTF16ToUTF8(filename.value()) << " expected " << size; 6755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 6765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return -1; 6775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Gets the current working directory for the process. 6805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool GetCurrentDirectory(FilePath* dir) { 681a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) ThreadRestrictions::AssertIOAllowed(); 6825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) wchar_t system_buffer[MAX_PATH]; 6845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) system_buffer[0] = 0; 6855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DWORD len = ::GetCurrentDirectory(MAX_PATH, system_buffer); 6865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (len == 0 || len > MAX_PATH) 6875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 6885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(evanm): the old behavior of this function was to always strip the 6895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // trailing slash. We duplicate this here, but it shouldn't be necessary 6905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // when everyone is using the appropriate FilePath APIs. 6915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::wstring dir_str(system_buffer); 6925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *dir = FilePath(dir_str).StripTrailingSeparators(); 6935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 6945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 6955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Sets the current working directory for the process. 6975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool SetCurrentDirectory(const FilePath& directory) { 698a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) ThreadRestrictions::AssertIOAllowed(); 6995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) BOOL ret = ::SetCurrentDirectory(directory.value().c_str()); 7005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ret != 0; 7015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 7025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int GetMaximumPathComponentLength(const FilePath& path) { 704a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) ThreadRestrictions::AssertIOAllowed(); 7052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 7062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) wchar_t volume_path[MAX_PATH]; 7072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (!GetVolumePathNameW(path.NormalizePathSeparators().value().c_str(), 7082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) volume_path, 7092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) arraysize(volume_path))) { 7102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return -1; 7112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 7122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 7132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DWORD max_length = 0; 7142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (!GetVolumeInformationW(volume_path, NULL, 0, NULL, &max_length, NULL, 7152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) NULL, 0)) { 7162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return -1; 7172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 7182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 7192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Length of |path| with path separator appended. 7202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) size_t prefix = path.StripTrailingSeparators().value().size() + 1; 7212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // The whole path string must be shorter than MAX_PATH. That is, it must be 7222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // prefix + component_length < MAX_PATH (or equivalently, <= MAX_PATH - 1). 7232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int whole_path_limit = std::max(0, MAX_PATH - 1 - static_cast<int>(prefix)); 7242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return std::min(whole_path_limit, static_cast<int>(max_length)); 7252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 7262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 727a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)// ----------------------------------------------------------------------------- 7287dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 7297dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdochnamespace internal { 7307dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 7317dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdochbool MoveUnsafe(const FilePath& from_path, const FilePath& to_path) { 7327dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch ThreadRestrictions::AssertIOAllowed(); 7337dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 7347dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // NOTE: I suspect we could support longer paths, but that would involve 7357dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // analyzing all our usage of files. 7367dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch if (from_path.value().length() >= MAX_PATH || 7377dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch to_path.value().length() >= MAX_PATH) { 7387dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch return false; 7397dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch } 7407dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch if (MoveFileEx(from_path.value().c_str(), to_path.value().c_str(), 7417dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch MOVEFILE_COPY_ALLOWED | MOVEFILE_REPLACE_EXISTING) != 0) 7427dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch return true; 7437dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 7447dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // Keep the last error value from MoveFileEx around in case the below 7457dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // fails. 7467dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch bool ret = false; 7477dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch DWORD last_error = ::GetLastError(); 7487dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 7497dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch if (DirectoryExists(from_path)) { 7507dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // MoveFileEx fails if moving directory across volumes. We will simulate 7517dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // the move by using Copy and Delete. Ideally we could check whether 7527dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // from_path and to_path are indeed in different volumes. 7537dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch ret = internal::CopyAndDeleteDirectory(from_path, to_path); 7547dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch } 7557dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 7567dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch if (!ret) { 7577dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // Leave a clue about what went wrong so that it can be (at least) picked 7587dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // up by a PLOG entry. 7597dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch ::SetLastError(last_error); 7607dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch } 7617dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 7627dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch return ret; 7637dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch} 7647dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 7657dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdochbool CopyFileUnsafe(const FilePath& from_path, const FilePath& to_path) { 7667dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch ThreadRestrictions::AssertIOAllowed(); 7677dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 7687dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // NOTE: I suspect we could support longer paths, but that would involve 7697dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // analyzing all our usage of files. 7707dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch if (from_path.value().length() >= MAX_PATH || 7717dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch to_path.value().length() >= MAX_PATH) { 7727dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch return false; 7737dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch } 7745d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 7755d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // Unlike the posix implementation that copies the file manually and discards 7765d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // the ACL bits, CopyFile() copies the complete SECURITY_DESCRIPTOR and access 7775d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // bits, which is usually not what we want. We can't do much about the 7785d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // SECURITY_DESCRIPTOR but at least remove the read only bit. 7795d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const wchar_t* dest = to_path.value().c_str(); 7805d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (!::CopyFile(from_path.value().c_str(), dest, false)) { 7815d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // Copy failed. 7825d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return false; 7835d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 7845d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) DWORD attrs = GetFileAttributes(dest); 7855d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (attrs == INVALID_FILE_ATTRIBUTES) { 7865d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return false; 7875d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 7885d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (attrs & FILE_ATTRIBUTE_READONLY) { 7895d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) SetFileAttributes(dest, attrs & ~FILE_ATTRIBUTE_READONLY); 7905d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 7915d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return true; 7927dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch} 7937dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 7947dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdochbool CopyAndDeleteDirectory(const FilePath& from_path, 7957dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch const FilePath& to_path) { 7967dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch ThreadRestrictions::AssertIOAllowed(); 7977dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch if (CopyDirectory(from_path, to_path, true)) { 7987dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch if (DeleteFile(from_path, true)) 7997dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch return true; 8007dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 8017dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // Like Move, this function is not transactional, so we just 8027dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // leave the copied bits behind if deleting from_path fails. 8037dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // If to_path exists previously then we have already overwritten 8047dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // it by now, we don't get better off by deleting the new bits. 8057dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch } 8067dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch return false; 8077dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch} 8087dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 8097dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch} // namespace internal 8107dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch} // namespace base 811