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[core] relax the FILE_SHARE_WRITE rules during enumeration

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* Should allow enumeration of drives, that other process have open
  with RW access, back again (looking at you, Paragon!!!)
This commit is contained in:
Pete Batard 2017-05-02 00:56:07 +01:00
parent 3b4b742772
commit 23390bf911
5 changed files with 18 additions and 19 deletions
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4
src/dev.c
View file

@ -654,8 +654,8 @@ BOOL GetDevices(DWORD devnum)
continue; continue;
} }
hDrive = CreateFileA(devint_detail_data->DevicePath, GENERIC_READ|GENERIC_WRITE, FILE_SHARE_READ, hDrive = CreateFileA(devint_detail_data->DevicePath, GENERIC_READ|GENERIC_WRITE,
NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if(hDrive == INVALID_HANDLE_VALUE) { if(hDrive == INVALID_HANDLE_VALUE) {
uprintf("Could not open '%s': %s\n", devint_detail_data->DevicePath, WindowsErrorString()); uprintf("Could not open '%s': %s\n", devint_detail_data->DevicePath, WindowsErrorString());
continue; continue;

17
src/drive.c
View file

@ -138,7 +138,7 @@ static HANDLE GetHandle(char* Path, BOOL bLockDrive, BOOL bWriteAccess, BOOL bWr
// We keep FILE_SHARE_READ though, as this shouldn't hurt us any, and is // We keep FILE_SHARE_READ though, as this shouldn't hurt us any, and is
// required for enumeration. // required for enumeration.
hDrive = CreateFileA(Path, GENERIC_READ|(bWriteAccess?GENERIC_WRITE:0), hDrive = CreateFileA(Path, GENERIC_READ|(bWriteAccess?GENERIC_WRITE:0),
FILE_SHARE_READ|((bWriteAccess && bWriteShare)?FILE_SHARE_WRITE:0), FILE_SHARE_READ|(bWriteShare?FILE_SHARE_WRITE:0),
NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hDrive != INVALID_HANDLE_VALUE) if (hDrive != INVALID_HANDLE_VALUE)
break; break;
@ -146,11 +146,10 @@ static HANDLE GetHandle(char* Path, BOOL bLockDrive, BOOL bWriteAccess, BOOL bWr
break; break;
if (i == 0) { if (i == 0) {
uprintf("Waiting for access..."); uprintf("Waiting for access...");
} else if (bWriteAccess && !bWriteShare && (i > DRIVE_ACCESS_RETRIES/3)) { } else if (!bWriteShare && (i > DRIVE_ACCESS_RETRIES/3)) {
// If we can't seem to get a hold of the drive for some time, // If we can't seem to get a hold of the drive for some time,
// try to enable FILE_SHARE_WRITE... // try to enable FILE_SHARE_WRITE...
uprintf("Warning: Could not obtain exclusive rights. Retrying with write sharing enabled..."); uprintf("Warning: Could not obtain exclusive rights. Retrying with write sharing enabled...");
SearchProcess(DevPath, TRUE, TRUE);
bWriteShare = TRUE; bWriteShare = TRUE;
} }
Sleep(DRIVE_ACCESS_TIMEOUT / DRIVE_ACCESS_RETRIES); Sleep(DRIVE_ACCESS_TIMEOUT / DRIVE_ACCESS_RETRIES);
@ -207,11 +206,11 @@ out:
/* /*
* Return a handle to the physical drive identified by DriveIndex * Return a handle to the physical drive identified by DriveIndex
*/ */
HANDLE GetPhysicalHandle(DWORD DriveIndex, BOOL bLockDrive, BOOL bWriteAccess) HANDLE GetPhysicalHandle(DWORD DriveIndex, BOOL bLockDrive, BOOL bWriteAccess, BOOL bWriteShare)
{ {
HANDLE hPhysical = INVALID_HANDLE_VALUE; HANDLE hPhysical = INVALID_HANDLE_VALUE;
char* PhysicalPath = GetPhysicalName(DriveIndex); char* PhysicalPath = GetPhysicalName(DriveIndex);
hPhysical = GetHandle(PhysicalPath, bLockDrive, bWriteAccess, FALSE); hPhysical = GetHandle(PhysicalPath, bLockDrive, bWriteAccess, bWriteShare);
safe_free(PhysicalPath); safe_free(PhysicalPath);
return hPhysical; return hPhysical;
} }
@ -537,7 +536,7 @@ BOOL GetDriveLabel(DWORD DriveIndex, char* letters, char** label)
// Try to read an extended label from autorun first. Fallback to regular label if not found. // Try to read an extended label from autorun first. Fallback to regular label if not found.
// In the case of card readers with no card, users can get an annoying popup asking them // In the case of card readers with no card, users can get an annoying popup asking them
// to insert media. Use IOCTL_STORAGE_CHECK_VERIFY to prevent this // to insert media. Use IOCTL_STORAGE_CHECK_VERIFY to prevent this
hPhysical = GetPhysicalHandle(DriveIndex, FALSE, FALSE); hPhysical = GetPhysicalHandle(DriveIndex, FALSE, FALSE, TRUE);
if (DeviceIoControl(hPhysical, IOCTL_STORAGE_CHECK_VERIFY, NULL, 0, NULL, 0, &size, NULL)) if (DeviceIoControl(hPhysical, IOCTL_STORAGE_CHECK_VERIFY, NULL, 0, NULL, 0, &size, NULL))
AutorunLabel = get_token_data_file("label", AutorunPath); AutorunLabel = get_token_data_file("label", AutorunPath);
else if (GetLastError() == ERROR_NOT_READY) else if (GetLastError() == ERROR_NOT_READY)
@ -570,7 +569,7 @@ uint64_t GetDriveSize(DWORD DriveIndex)
BYTE geometry[256]; BYTE geometry[256];
PDISK_GEOMETRY_EX DiskGeometry = (PDISK_GEOMETRY_EX)(void*)geometry; PDISK_GEOMETRY_EX DiskGeometry = (PDISK_GEOMETRY_EX)(void*)geometry;
hPhysical = GetPhysicalHandle(DriveIndex, FALSE, FALSE); hPhysical = GetPhysicalHandle(DriveIndex, FALSE, FALSE, TRUE);
if (hPhysical == INVALID_HANDLE_VALUE) if (hPhysical == INVALID_HANDLE_VALUE)
return FALSE; return FALSE;
@ -592,7 +591,7 @@ BOOL IsMediaPresent(DWORD DriveIndex)
DWORD size; DWORD size;
BYTE geometry[128]; BYTE geometry[128];
hPhysical = GetPhysicalHandle(DriveIndex, FALSE, FALSE); hPhysical = GetPhysicalHandle(DriveIndex, FALSE, FALSE, TRUE);
r = DeviceIoControl(hPhysical, IOCTL_DISK_GET_DRIVE_GEOMETRY_EX, r = DeviceIoControl(hPhysical, IOCTL_DISK_GET_DRIVE_GEOMETRY_EX,
NULL, 0, geometry, sizeof(geometry), &size, NULL) && (size > 0); NULL, 0, geometry, sizeof(geometry), &size, NULL) && (size > 0);
safe_closehandle(hPhysical); safe_closehandle(hPhysical);
@ -711,7 +710,7 @@ BOOL GetDrivePartitionData(DWORD DriveIndex, char* FileSystemName, DWORD FileSys
} }
safe_free(volume_name); safe_free(volume_name);
hPhysical = GetPhysicalHandle(DriveIndex, FALSE, FALSE); hPhysical = GetPhysicalHandle(DriveIndex, FALSE, FALSE, TRUE);
if (hPhysical == INVALID_HANDLE_VALUE) if (hPhysical == INVALID_HANDLE_VALUE)
return 0; return 0;

2
src/drive.h
View file

@ -79,7 +79,7 @@ extern RUFUS_DRIVE_INFO SelectedDrive;
BOOL SetAutoMount(BOOL enable); BOOL SetAutoMount(BOOL enable);
BOOL GetAutoMount(BOOL* enabled); BOOL GetAutoMount(BOOL* enabled);
char* GetPhysicalName(DWORD DriveIndex); char* GetPhysicalName(DWORD DriveIndex);
HANDLE GetPhysicalHandle(DWORD DriveIndex, BOOL bLockDrive, BOOL bWriteAccess); HANDLE GetPhysicalHandle(DWORD DriveIndex, BOOL bLockDrive, BOOL bWriteAccess, BOOL bWriteShare);
char* GetLogicalName(DWORD DriveIndex, BOOL bKeepTrailingBackslash, BOOL bSilent); char* GetLogicalName(DWORD DriveIndex, BOOL bKeepTrailingBackslash, BOOL bSilent);
BOOL WaitForLogical(DWORD DriveIndex); BOOL WaitForLogical(DWORD DriveIndex);
HANDLE GetLogicalHandle(DWORD DriveIndex, BOOL bLockDrive, BOOL bWriteAccess, BOOL bWriteShare); HANDLE GetLogicalHandle(DWORD DriveIndex, BOOL bLockDrive, BOOL bWriteAccess, BOOL bWriteShare);

4
src/format.c
View file

@ -1663,7 +1663,7 @@ DWORD WINAPI FormatThread(void* param)
extra_partitions = XP_COMPAT; extra_partitions = XP_COMPAT;
PrintInfoDebug(0, MSG_225); PrintInfoDebug(0, MSG_225);
hPhysicalDrive = GetPhysicalHandle(DriveIndex, lock_drive, TRUE); hPhysicalDrive = GetPhysicalHandle(DriveIndex, lock_drive, TRUE, FALSE);
if (hPhysicalDrive == INVALID_HANDLE_VALUE) { if (hPhysicalDrive == INVALID_HANDLE_VALUE) {
FormatStatus = ERROR_SEVERITY_ERROR|FAC(FACILITY_STORAGE)|ERROR_OPEN_FAILED; FormatStatus = ERROR_SEVERITY_ERROR|FAC(FACILITY_STORAGE)|ERROR_OPEN_FAILED;
goto out; goto out;
@ -2096,7 +2096,7 @@ DWORD WINAPI SaveImageThread(void* param)
LastRefresh = 0; LastRefresh = 0;
switch (img_save->Type) { switch (img_save->Type) {
case IMG_SAVE_TYPE_VHD: case IMG_SAVE_TYPE_VHD:
hPhysicalDrive = GetPhysicalHandle(img_save->DeviceNum, TRUE, FALSE); hPhysicalDrive = GetPhysicalHandle(img_save->DeviceNum, TRUE, FALSE, FALSE);
break; break;
case IMG_SAVE_TYPE_ISO: case IMG_SAVE_TYPE_ISO:
hPhysicalDrive = CreateFileA(img_save->DevicePath, GENERIC_READ, FILE_SHARE_READ, hPhysicalDrive = CreateFileA(img_save->DevicePath, GENERIC_READ, FILE_SHARE_READ,

10
src/rufus.rc
View file

@ -33,7 +33,7 @@ LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
IDD_DIALOG DIALOGEX 12, 12, 242, 376 IDD_DIALOG DIALOGEX 12, 12, 242, 376
STYLE DS_SETFONT | DS_MODALFRAME | DS_CENTER | WS_MINIMIZEBOX | WS_POPUP | WS_CAPTION | WS_SYSMENU STYLE DS_SETFONT | DS_MODALFRAME | DS_CENTER | WS_MINIMIZEBOX | WS_POPUP | WS_CAPTION | WS_SYSMENU
EXSTYLE WS_EX_ACCEPTFILES EXSTYLE WS_EX_ACCEPTFILES
CAPTION "Rufus 2.15.1103" CAPTION "Rufus 2.15.1104"
FONT 8, "Segoe UI Symbol", 400, 0, 0x0 FONT 8, "Segoe UI Symbol", 400, 0, 0x0
BEGIN BEGIN
LTEXT "Device",IDS_DEVICE_TXT,9,6,200,8 LTEXT "Device",IDS_DEVICE_TXT,9,6,200,8
@ -334,8 +334,8 @@ END
// //
VS_VERSION_INFO VERSIONINFO VS_VERSION_INFO VERSIONINFO
FILEVERSION 2,15,1103,0 FILEVERSION 2,15,1104,0
PRODUCTVERSION 2,15,1103,0 PRODUCTVERSION 2,15,1104,0
FILEFLAGSMASK 0x3fL FILEFLAGSMASK 0x3fL
#ifdef _DEBUG #ifdef _DEBUG
FILEFLAGS 0x1L FILEFLAGS 0x1L
@ -352,13 +352,13 @@ BEGIN
BEGIN BEGIN
VALUE "CompanyName", "Akeo Consulting (http://akeo.ie)" VALUE "CompanyName", "Akeo Consulting (http://akeo.ie)"
VALUE "FileDescription", "Rufus" VALUE "FileDescription", "Rufus"
VALUE "FileVersion", "2.15.1103" VALUE "FileVersion", "2.15.1104"
VALUE "InternalName", "Rufus" VALUE "InternalName", "Rufus"
VALUE "LegalCopyright", "© 2011-2017 Pete Batard (GPL v3)" VALUE "LegalCopyright", "© 2011-2017 Pete Batard (GPL v3)"
VALUE "LegalTrademarks", "http://www.gnu.org/copyleft/gpl.html" VALUE "LegalTrademarks", "http://www.gnu.org/copyleft/gpl.html"
VALUE "OriginalFilename", "rufus.exe" VALUE "OriginalFilename", "rufus.exe"
VALUE "ProductName", "Rufus" VALUE "ProductName", "Rufus"
VALUE "ProductVersion", "2.15.1103" VALUE "ProductVersion", "2.15.1104"
END END
END END
BLOCK "VarFileInfo" BLOCK "VarFileInfo"