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[KERNEL32]
- Implement the internal functions: GetVolumeNameForRoot(), BasepGetVolumeNameFromReparsePoint(), BasepGetVolumeNameForVolumeMountPoint() that allow querying the volume name (GUID form) given a volume root - Reimplement GetVolumeNameForVolumeMountPointW() with the new internal function BasepGetVolumeNameForVolumeMountPoint() this fixes a few bugs and adds supports for reparse points - Reimplement GetVolumeNameForVolumeMountPointA() to make it w2k3 compliant Note that I dropped copyrights in the header, as everything got reimplemented svn path=/trunk/; revision=76025
This commit is contained in:
Pierre Schweitzer
parent
b77e16847d
commit
a0b2ac0ff9
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@ -3,25 +3,468 @@
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* PROJECT: ReactOS system libraries
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* FILE: dll/win32/kernel32/client/file/mntpoint.c
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* PURPOSE: File volume mount point functions
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* PROGRAMMER: Ariadne ( ariadne@xs4all.nl)
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* Erik Bos, Alexandre Julliard :
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* GetLogicalDriveStringsA,
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* GetLogicalDriveStringsW, GetLogicalDrives
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* UPDATE HISTORY:
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* Created 01/11/98
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*/
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//WINE copyright notice:
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/*
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* DOS drives handling functions
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*
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* Copyright 1993 Erik Bos
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* Copyright 1996 Alexandre Julliard
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* PROGRAMMER: Pierre Schweitzer (pierre@reactos.org)
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*/
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#include <k32.h>
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#define NDEBUG
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#include <debug.h>
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DEBUG_CHANNEL(kernel32file);
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/*
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* @implemented
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*/
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static BOOL
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GetVolumeNameForRoot(IN LPCWSTR lpszRootPath,
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OUT LPWSTR lpszVolumeName,
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IN DWORD cchBufferLength)
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{
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BOOL Ret;
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NTSTATUS Status;
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PWSTR FoundVolume;
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DWORD BytesReturned;
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UNICODE_STRING NtPathName;
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IO_STATUS_BLOCK IoStatusBlock;
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PMOUNTMGR_MOUNT_POINT MountPoint;
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ULONG CurrentMntPt, FoundVolumeLen;
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PMOUNTMGR_MOUNT_POINTS MountPoints;
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OBJECT_ATTRIBUTES ObjectAttributes;
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HANDLE VolumeHandle, MountMgrHandle;
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struct
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{
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MOUNTDEV_NAME;
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WCHAR Buffer[MAX_PATH];
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} MountDevName;
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/* It makes no sense on a non-local drive */
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if (GetDriveTypeW(lpszRootPath) == DRIVE_REMOTE)
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{
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SetLastError(ERROR_PATH_NOT_FOUND);
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return FALSE;
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}
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/* Get the NT path */
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if (!RtlDosPathNameToNtPathName_U(lpszRootPath, &NtPathName, NULL, NULL))
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{
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SetLastError(ERROR_PATH_NOT_FOUND);
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return FALSE;
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}
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/* If it's a root path - likely - drop backslash to open volume */
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if (NtPathName.Buffer[(NtPathName.Length / sizeof(WCHAR)) - 1] == L'\\')
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{
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NtPathName.Buffer[(NtPathName.Length / sizeof(WCHAR)) - 1] = UNICODE_NULL;
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NtPathName.Length -= sizeof(WCHAR);
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}
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/* If that's a DOS volume, upper case the letter */
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if (NtPathName.Length >= 2 * sizeof(WCHAR))
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{
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if (NtPathName.Buffer[(NtPathName.Length / sizeof(WCHAR)) - 1] == L':')
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{
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NtPathName.Buffer[(NtPathName.Length / sizeof(WCHAR)) - 2] = _toupper(NtPathName.Buffer[(NtPathName.Length / sizeof(WCHAR)) - 2]);
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}
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}
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/* Attempt to open the volume */
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InitializeObjectAttributes(&ObjectAttributes, &NtPathName,
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OBJ_CASE_INSENSITIVE, NULL, NULL);
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Status = NtOpenFile(&VolumeHandle, SYNCHRONIZE | FILE_READ_ATTRIBUTES,
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&ObjectAttributes, &IoStatusBlock,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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FILE_SYNCHRONOUS_IO_ALERT);
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if (!NT_SUCCESS(Status))
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{
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RtlFreeHeap(RtlGetProcessHeap(), 0, NtPathName.Buffer);
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BaseSetLastNTError(Status);
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return FALSE;
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}
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/* Query the device name - that's what we'll translate */
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if (!DeviceIoControl(VolumeHandle, IOCTL_MOUNTDEV_QUERY_DEVICE_NAME, NULL,
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0, &MountDevName, sizeof(MountDevName), &BytesReturned,
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NULL))
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{
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NtClose(VolumeHandle);
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RtlFreeHeap(RtlGetProcessHeap(), 0, NtPathName.Buffer);
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return FALSE;
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}
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/* No longer need the volume */
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NtClose(VolumeHandle);
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RtlFreeHeap(RtlGetProcessHeap(), 0, NtPathName.Buffer);
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/* We'll keep the device name for later usage */
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NtPathName.Length = MountDevName.NameLength;
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NtPathName.MaximumLength = MountDevName.NameLength + sizeof(UNICODE_NULL);
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NtPathName.Buffer = RtlAllocateHeap(RtlGetProcessHeap(), 0, NtPathName.MaximumLength);
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if (NtPathName.Buffer == NULL)
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{
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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return FALSE;
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}
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RtlCopyMemory(NtPathName.Buffer, MountDevName.Name, NtPathName.Length);
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NtPathName.Buffer[NtPathName.Length / sizeof(WCHAR)] = UNICODE_NULL;
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/* Allocate the structure for querying the mount mgr */
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MountPoint = RtlAllocateHeap(RtlGetProcessHeap(), 0,
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NtPathName.Length + sizeof(MOUNTMGR_MOUNT_POINT));
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if (MountPoint == NULL)
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{
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RtlFreeHeap(RtlGetProcessHeap(), 0, NtPathName.Buffer);
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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return FALSE;
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}
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/* 0 everything, we provide a device name */
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RtlZeroMemory(MountPoint, sizeof(MOUNTMGR_MOUNT_POINT));
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MountPoint->DeviceNameOffset = sizeof(MOUNTMGR_MOUNT_POINT);
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MountPoint->DeviceNameLength = NtPathName.Length;
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RtlCopyMemory((PVOID)((ULONG_PTR)MountPoint + sizeof(MOUNTMGR_MOUNT_POINT)), NtPathName.Buffer, NtPathName.Length);
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RtlFreeHeap(RtlGetProcessHeap(), 0, NtPathName.Buffer);
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/* Allocate a dummy output buffer to probe for size */
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MountPoints = RtlAllocateHeap(RtlGetProcessHeap(), 0, sizeof(MOUNTMGR_MOUNT_POINTS));
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if (MountPoints == NULL)
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{
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RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoint);
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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return FALSE;
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}
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/* Open a handle to the mount manager */
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MountMgrHandle = CreateFileW(MOUNTMGR_DOS_DEVICE_NAME, 0,
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FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
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OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,
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INVALID_HANDLE_VALUE);
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if (MountMgrHandle == INVALID_HANDLE_VALUE)
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{
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RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoints);
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RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoint);
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return FALSE;
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}
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/* Query the names associated to our device name */
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Ret = DeviceIoControl(MountMgrHandle, IOCTL_MOUNTMGR_QUERY_POINTS,
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MountPoint, NtPathName.Length + sizeof(MOUNTMGR_MOUNT_POINT),
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MountPoints, sizeof(MOUNTMGR_MOUNT_POINTS), &BytesReturned,
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NULL);
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/* As long as the buffer is too small, keep looping */
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while (!Ret && GetLastError() == ERROR_MORE_DATA)
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{
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ULONG BufferSize;
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/* Get the size we've to allocate */
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BufferSize = MountPoints->Size;
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/* Reallocate the buffer with enough room */
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RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoints);
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MountPoints = RtlAllocateHeap(RtlGetProcessHeap(), 0, BufferSize);
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if (MountPoints == NULL)
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{
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CloseHandle(MountMgrHandle);
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RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoint);
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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return FALSE;
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}
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/* Reissue the request, it should work now! */
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Ret = DeviceIoControl(MountMgrHandle, IOCTL_MOUNTMGR_QUERY_POINTS,
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MountPoint, NtPathName.Length + sizeof(MOUNTMGR_MOUNT_POINT),
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MountPoints, BufferSize, &BytesReturned, NULL);
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}
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/* We're done, no longer need the mount manager */
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CloseHandle(MountMgrHandle);
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/* Nor our input buffer */
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RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoint);
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/* If the mount manager failed, just quit */
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if (!Ret)
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{
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RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoints);
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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CurrentMntPt = 0;
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/* If there were no associated mount points, we'll return the device name */
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if (MountPoints->NumberOfMountPoints == 0)
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{
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FoundVolume = NtPathName.Buffer;
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FoundVolumeLen = NtPathName.Length;
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}
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/* Otherwise, find one which is matching */
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else
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{
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for (; CurrentMntPt < MountPoints->NumberOfMountPoints; ++CurrentMntPt)
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{
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UNICODE_STRING SymbolicLink;
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/* Make a string of it, to easy the checks */
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SymbolicLink.Length = MountPoints->MountPoints[CurrentMntPt].SymbolicLinkNameLength;
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SymbolicLink.MaximumLength = SymbolicLink.Length;
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SymbolicLink.Buffer = (PVOID)((ULONG_PTR)&MountPoints->MountPoints[CurrentMntPt] + MountPoints->MountPoints[CurrentMntPt].SymbolicLinkNameOffset);
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/* If that's a NT volume name (GUID form), keep it! */
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if (MOUNTMGR_IS_NT_VOLUME_NAME(&SymbolicLink))
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{
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FoundVolume = SymbolicLink.Buffer;
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FoundVolumeLen = SymbolicLink.Length;
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break;
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}
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}
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}
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/* We couldn't find anything matching, return an error */
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if (CurrentMntPt == MountPoints->NumberOfMountPoints)
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{
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RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoints);
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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/* We found a matching volume, have we enough memory to return it? */
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if (cchBufferLength * sizeof(WCHAR) < FoundVolumeLen + 2 * sizeof(WCHAR))
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{
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RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoints);
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SetLastError(ERROR_FILENAME_EXCED_RANGE);
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return FALSE;
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}
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/* Copy it back! */
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RtlCopyMemory(lpszVolumeName, FoundVolume, FoundVolumeLen);
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/* Make it compliant */
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lpszVolumeName[1] = L'\\';
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/* And transform it as root path */
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lpszVolumeName[FoundVolumeLen / sizeof(WCHAR)] = L'\\';
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lpszVolumeName[FoundVolumeLen / sizeof(WCHAR) + 1] = UNICODE_NULL;
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/* We're done! */
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RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoints);
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return TRUE;
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}
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/*
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* @implemented
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*/
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static BOOL
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BasepGetVolumeNameFromReparsePoint(IN LPCWSTR lpszMountPoint,
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OUT LPWSTR lpszVolumeName,
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IN DWORD cchBufferLength,
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OUT LPBOOL IsAMountPoint)
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{
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WCHAR Old;
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DWORD BytesReturned;
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HANDLE ReparseHandle;
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UNICODE_STRING SubstituteName;
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PREPARSE_DATA_BUFFER ReparseBuffer;
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/* Try to open the reparse point */
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ReparseHandle = CreateFileW(lpszMountPoint, 0,
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FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
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OPEN_EXISTING,
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FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS | FILE_ATTRIBUTE_NORMAL,
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INVALID_HANDLE_VALUE);
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/* It failed! */
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if (ReparseHandle == INVALID_HANDLE_VALUE)
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{
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/* Report it's not a mount point (it's not a reparse point) */
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if (IsAMountPoint != NULL)
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{
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*IsAMountPoint = FALSE;
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}
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/* And zero output */
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if (lpszVolumeName != NULL && cchBufferLength >= 1)
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{
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lpszVolumeName[0] = UNICODE_NULL;
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}
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return FALSE;
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}
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/* This is a mount point! */
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if (IsAMountPoint != NULL)
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{
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*IsAMountPoint = TRUE;
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}
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/* Prepare a buffer big enough to read its data */
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ReparseBuffer = RtlAllocateHeap(RtlGetProcessHeap(), 0, MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
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if (ReparseBuffer == NULL)
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{
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CloseHandle(ReparseHandle);
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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/* Zero output */
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if (lpszVolumeName != NULL && cchBufferLength >= 1)
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{
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lpszVolumeName[0] = UNICODE_NULL;
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}
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return FALSE;
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}
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/* Dump the reparse point data */
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if (!DeviceIoControl(ReparseHandle, FSCTL_GET_REPARSE_POINT, NULL, 0,
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ReparseBuffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE, &BytesReturned,
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NULL))
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{
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RtlFreeHeap(RtlGetProcessHeap(), 0, ReparseBuffer);
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CloseHandle(ReparseHandle);
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/* Zero output */
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if (lpszVolumeName != NULL && cchBufferLength >= 1)
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{
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lpszVolumeName[0] = UNICODE_NULL;
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}
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return FALSE;
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}
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/* We no longer need the reparse point */
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CloseHandle(ReparseHandle);
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/* We only handle mount points */
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if (ReparseBuffer->ReparseTag != IO_REPARSE_TAG_MOUNT_POINT)
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{
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RtlFreeHeap(RtlGetProcessHeap(), 0, ReparseBuffer);
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/* Zero output */
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if (lpszVolumeName != NULL && cchBufferLength >= 1)
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{
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lpszVolumeName[0] = UNICODE_NULL;
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}
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return FALSE;
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}
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/* Do we have enough room for copying substitue name? */
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if ((ReparseBuffer->MountPointReparseBuffer.SubstituteNameLength + sizeof(UNICODE_NULL)) > cchBufferLength * sizeof(WCHAR))
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{
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RtlFreeHeap(RtlGetProcessHeap(), 0, ReparseBuffer);
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SetLastError(ERROR_FILENAME_EXCED_RANGE);
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/* Zero output */
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if (lpszVolumeName != NULL && cchBufferLength >= 1)
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{
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lpszVolumeName[0] = UNICODE_NULL;
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}
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return FALSE;
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}
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/* Copy the link target */
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RtlCopyMemory(lpszVolumeName,
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&ReparseBuffer->MountPointReparseBuffer.PathBuffer[ReparseBuffer->MountPointReparseBuffer.SubstituteNameOffset / sizeof(WCHAR)],
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ReparseBuffer->MountPointReparseBuffer.SubstituteNameLength);
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/* Make it DOS valid */
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Old = lpszVolumeName[1];
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/* We want a root path */
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lpszVolumeName[1] = L'\\';
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/* And null terminate obviously */
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lpszVolumeName[ReparseBuffer->MountPointReparseBuffer.SubstituteNameLength / sizeof(WCHAR)] = UNICODE_NULL;
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/* Make it a string to easily check it */
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SubstituteName.Length = ReparseBuffer->MountPointReparseBuffer.SubstituteNameLength;
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SubstituteName.MaximumLength = SubstituteName.Length;
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SubstituteName.Buffer = lpszVolumeName;
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/* No longer need the data? */
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RtlFreeHeap(RtlGetProcessHeap(), 0, ReparseBuffer);
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/* Is that a dos volume name with backslash? */
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if (MOUNTMGR_IS_DOS_VOLUME_NAME_WB(&SubstituteName))
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{
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return TRUE;
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}
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/* No, so restore previous name and return to the caller */
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lpszVolumeName[1] = Old;
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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/*
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* @implemented
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*/
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BOOL
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BasepGetVolumeNameForVolumeMountPoint(IN LPCWSTR lpszMountPoint,
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OUT LPWSTR lpszVolumeName,
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IN DWORD cchBufferLength,
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OUT LPBOOL IsAMountPoint)
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{
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BOOL Ret;
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UNICODE_STRING MountPoint;
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/* Assume it's a mount point (likely for non reparse points) */
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if (IsAMountPoint != NULL)
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{
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*IsAMountPoint = 1;
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}
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/* Make a string with the mount point name */
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RtlInitUnicodeString(&MountPoint, lpszMountPoint);
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/* Not a root path? */
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if (MountPoint.Buffer[(MountPoint.Length / sizeof(WCHAR)) - 1] != L'\\')
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{
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BaseSetLastNTError(STATUS_OBJECT_NAME_INVALID);
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/* Zero output */
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if (lpszVolumeName != NULL && cchBufferLength >= 1)
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{
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lpszVolumeName[0] = UNICODE_NULL;
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}
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return FALSE;
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}
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/* Does it look like <letter>:\? */
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if (MountPoint.Length == 3 * sizeof(WCHAR))
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{
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/* Try to get volume name for root path */
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Ret = GetVolumeNameForRoot(lpszMountPoint, lpszVolumeName, cchBufferLength);
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/* It failed? */
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if (!Ret)
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{
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/* If wasn't a drive letter, so maybe a reparse point? */
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if (MountPoint.Buffer[1] != ':')
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{
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Ret = BasepGetVolumeNameFromReparsePoint(lpszMountPoint, lpszVolumeName, cchBufferLength, IsAMountPoint);
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}
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/* It was, so zero output */
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else if (lpszVolumeName != NULL && cchBufferLength >= 1)
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{
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lpszVolumeName[0] = UNICODE_NULL;
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}
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}
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}
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else
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{
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/* Try to get volume name for root path */
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||||
Ret = GetVolumeNameForRoot(lpszMountPoint, lpszVolumeName, cchBufferLength);
|
||||
/* It failed? */
|
||||
if (!Ret)
|
||||
{
|
||||
/* It was a DOS volume as UNC name, so fail and zero output */
|
||||
if (MountPoint.Length == 14 && MountPoint.Buffer[0] == '\\' && MountPoint.Buffer[1] == '\\' &&
|
||||
(MountPoint.Buffer[2] == '.' || MountPoint.Buffer[2] == '?') && MountPoint.Buffer[3] == L'\\' &&
|
||||
MountPoint.Buffer[5] == ':')
|
||||
{
|
||||
if (lpszVolumeName != NULL && cchBufferLength >= 1)
|
||||
{
|
||||
lpszVolumeName[0] = UNICODE_NULL;
|
||||
}
|
||||
}
|
||||
/* Maybe it's a reparse point? */
|
||||
else
|
||||
{
|
||||
Ret = BasepGetVolumeNameFromReparsePoint(lpszMountPoint, lpszVolumeName, cchBufferLength, IsAMountPoint);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return Ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* @name GetVolumeNameForVolumeMountPointW
|
||||
|
|
@ -48,218 +491,21 @@ GetVolumeNameForVolumeMountPointW(IN LPCWSTR VolumeMountPoint,
|
|||
OUT LPWSTR VolumeName,
|
||||
IN DWORD VolumeNameLength)
|
||||
{
|
||||
UNICODE_STRING NtFileName;
|
||||
OBJECT_ATTRIBUTES ObjectAttributes;
|
||||
HANDLE FileHandle;
|
||||
IO_STATUS_BLOCK Iosb;
|
||||
ULONG BufferLength;
|
||||
PMOUNTDEV_NAME MountDevName;
|
||||
PMOUNTMGR_MOUNT_POINT MountPoint;
|
||||
ULONG MountPointSize;
|
||||
PMOUNTMGR_MOUNT_POINTS MountPoints;
|
||||
ULONG Index;
|
||||
PUCHAR SymbolicLinkName;
|
||||
BOOL Result;
|
||||
NTSTATUS Status;
|
||||
BOOL Ret;
|
||||
|
||||
if (!VolumeMountPoint || !VolumeMountPoint[0])
|
||||
{
|
||||
SetLastError(ERROR_PATH_NOT_FOUND);
|
||||
return FALSE;
|
||||
}
|
||||
/* Just query our internal function */
|
||||
Ret = BasepGetVolumeNameForVolumeMountPoint(VolumeMountPoint, VolumeName,
|
||||
VolumeNameLength, NULL);
|
||||
if (!Ret && VolumeName != NULL && VolumeNameLength >= 1)
|
||||
{
|
||||
VolumeName[0] = UNICODE_NULL;
|
||||
}
|
||||
|
||||
/*
|
||||
* First step is to convert the passed volume mount point name to
|
||||
* an NT acceptable name.
|
||||
*/
|
||||
|
||||
if (!RtlDosPathNameToNtPathName_U(VolumeMountPoint, &NtFileName, NULL, NULL))
|
||||
{
|
||||
SetLastError(ERROR_PATH_NOT_FOUND);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (NtFileName.Length > sizeof(WCHAR) &&
|
||||
NtFileName.Buffer[(NtFileName.Length / sizeof(WCHAR)) - 1] == '\\')
|
||||
{
|
||||
NtFileName.Length -= sizeof(WCHAR);
|
||||
}
|
||||
|
||||
/*
|
||||
* Query mount point device name which we will later use for determining
|
||||
* the volume name.
|
||||
*/
|
||||
|
||||
InitializeObjectAttributes(&ObjectAttributes, &NtFileName, 0, NULL, NULL);
|
||||
Status = NtOpenFile(&FileHandle, FILE_READ_ATTRIBUTES | SYNCHRONIZE,
|
||||
&ObjectAttributes, &Iosb,
|
||||
FILE_SHARE_READ | FILE_SHARE_WRITE,
|
||||
FILE_SYNCHRONOUS_IO_NONALERT);
|
||||
RtlFreeUnicodeString(&NtFileName);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
BaseSetLastNTError(Status);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
BufferLength = sizeof(MOUNTDEV_NAME) + 50 * sizeof(WCHAR);
|
||||
do
|
||||
{
|
||||
MountDevName = RtlAllocateHeap(RtlGetProcessHeap(), 0, BufferLength);
|
||||
if (MountDevName == NULL)
|
||||
{
|
||||
NtClose(FileHandle);
|
||||
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
Status = NtDeviceIoControlFile(FileHandle, NULL, NULL, NULL, &Iosb,
|
||||
IOCTL_MOUNTDEV_QUERY_DEVICE_NAME,
|
||||
NULL, 0, MountDevName, BufferLength);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
if (Status == STATUS_BUFFER_OVERFLOW)
|
||||
{
|
||||
BufferLength = sizeof(MOUNTDEV_NAME) + MountDevName->NameLength;
|
||||
RtlFreeHeap(GetProcessHeap(), 0, MountDevName);
|
||||
continue;
|
||||
}
|
||||
else
|
||||
{
|
||||
RtlFreeHeap(GetProcessHeap(), 0, MountDevName);
|
||||
NtClose(FileHandle);
|
||||
BaseSetLastNTError(Status);
|
||||
return FALSE;
|
||||
}
|
||||
}
|
||||
}
|
||||
while (!NT_SUCCESS(Status));
|
||||
|
||||
NtClose(FileHandle);
|
||||
|
||||
/*
|
||||
* Get the mount point information from mount manager.
|
||||
*/
|
||||
|
||||
MountPointSize = MountDevName->NameLength + sizeof(MOUNTMGR_MOUNT_POINT);
|
||||
MountPoint = RtlAllocateHeap(GetProcessHeap(), 0, MountPointSize);
|
||||
if (MountPoint == NULL)
|
||||
{
|
||||
RtlFreeHeap(GetProcessHeap(), 0, MountDevName);
|
||||
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
|
||||
return FALSE;
|
||||
}
|
||||
RtlZeroMemory(MountPoint, sizeof(MOUNTMGR_MOUNT_POINT));
|
||||
MountPoint->DeviceNameOffset = sizeof(MOUNTMGR_MOUNT_POINT);
|
||||
MountPoint->DeviceNameLength = MountDevName->NameLength;
|
||||
RtlCopyMemory(MountPoint + 1, MountDevName->Name, MountDevName->NameLength);
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, MountDevName);
|
||||
|
||||
RtlInitUnicodeString(&NtFileName, L"\\??\\MountPointManager");
|
||||
InitializeObjectAttributes(&ObjectAttributes, &NtFileName, 0, NULL, NULL);
|
||||
Status = NtOpenFile(&FileHandle, FILE_GENERIC_READ, &ObjectAttributes,
|
||||
&Iosb, FILE_SHARE_READ | FILE_SHARE_WRITE,
|
||||
FILE_SYNCHRONOUS_IO_NONALERT);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
BaseSetLastNTError(Status);
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoint);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
BufferLength = sizeof(MOUNTMGR_MOUNT_POINTS);
|
||||
do
|
||||
{
|
||||
MountPoints = RtlAllocateHeap(RtlGetProcessHeap(), 0, BufferLength);
|
||||
if (MountPoints == NULL)
|
||||
{
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoint);
|
||||
NtClose(FileHandle);
|
||||
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
Status = NtDeviceIoControlFile(FileHandle, NULL, NULL, NULL, &Iosb,
|
||||
IOCTL_MOUNTMGR_QUERY_POINTS,
|
||||
MountPoint, MountPointSize,
|
||||
MountPoints, BufferLength);
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
if (Status == STATUS_BUFFER_OVERFLOW)
|
||||
{
|
||||
BufferLength = MountPoints->Size;
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoints);
|
||||
continue;
|
||||
}
|
||||
else if (!NT_SUCCESS(Status))
|
||||
{
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoint);
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoints);
|
||||
NtClose(FileHandle);
|
||||
BaseSetLastNTError(Status);
|
||||
return FALSE;
|
||||
}
|
||||
}
|
||||
}
|
||||
while (!NT_SUCCESS(Status));
|
||||
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoint);
|
||||
NtClose(FileHandle);
|
||||
|
||||
/*
|
||||
* Now we've gathered info about all mount points mapped to our device, so
|
||||
* select the correct one and copy it into the output buffer.
|
||||
*/
|
||||
|
||||
for (Index = 0; Index < MountPoints->NumberOfMountPoints; Index++)
|
||||
{
|
||||
MountPoint = MountPoints->MountPoints + Index;
|
||||
SymbolicLinkName = (PUCHAR)MountPoints + MountPoint->SymbolicLinkNameOffset;
|
||||
|
||||
/*
|
||||
* Check for "\\?\Volume{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}\"
|
||||
* (with the last slash being optional) style symbolic links.
|
||||
*/
|
||||
|
||||
if (MountPoint->SymbolicLinkNameLength == 48 * sizeof(WCHAR) ||
|
||||
(MountPoint->SymbolicLinkNameLength == 49 * sizeof(WCHAR) &&
|
||||
SymbolicLinkName[48] == L'\\'))
|
||||
{
|
||||
if (RtlCompareMemory(SymbolicLinkName, L"\\??\\Volume{",
|
||||
11 * sizeof(WCHAR)) == 11 * sizeof(WCHAR) &&
|
||||
SymbolicLinkName[19] == L'-' && SymbolicLinkName[24] == L'-' &&
|
||||
SymbolicLinkName[29] == L'-' && SymbolicLinkName[34] == L'-' &&
|
||||
SymbolicLinkName[47] == L'}')
|
||||
{
|
||||
if (VolumeNameLength >= MountPoint->SymbolicLinkNameLength / sizeof(WCHAR))
|
||||
{
|
||||
RtlCopyMemory(VolumeName,
|
||||
(PUCHAR)MountPoints + MountPoint->SymbolicLinkNameOffset,
|
||||
MountPoint->SymbolicLinkNameLength);
|
||||
VolumeName[1] = L'\\';
|
||||
Result = TRUE;
|
||||
}
|
||||
else
|
||||
{
|
||||
SetLastError(ERROR_FILENAME_EXCED_RANGE);
|
||||
Result = FALSE;
|
||||
}
|
||||
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoints);
|
||||
|
||||
return Result;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, MountPoints);
|
||||
SetLastError(ERROR_INVALID_PARAMETER);
|
||||
|
||||
return FALSE;
|
||||
return Ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* @implemented (Wine 13 sep 2008)
|
||||
* @implemented
|
||||
*/
|
||||
BOOL
|
||||
WINAPI
|
||||
|
|
@ -267,20 +513,60 @@ GetVolumeNameForVolumeMountPointA(IN LPCSTR lpszVolumeMountPoint,
|
|||
IN LPSTR lpszVolumeName,
|
||||
IN DWORD cchBufferLength)
|
||||
{
|
||||
BOOL ret;
|
||||
WCHAR volumeW[50], *pathW = NULL;
|
||||
DWORD len = min( sizeof(volumeW) / sizeof(WCHAR), cchBufferLength );
|
||||
BOOL Ret;
|
||||
ANSI_STRING VolumeName;
|
||||
UNICODE_STRING VolumeNameU;
|
||||
PUNICODE_STRING VolumeMountPointU;
|
||||
|
||||
TRACE("(%s, %p, %x)\n", debugstr_a(lpszVolumeMountPoint), lpszVolumeName, cchBufferLength);
|
||||
|
||||
if (!lpszVolumeMountPoint || !(pathW = FilenameA2W( lpszVolumeMountPoint, TRUE )))
|
||||
/* Convert mount point to unicode */
|
||||
VolumeMountPointU = Basep8BitStringToStaticUnicodeString(lpszVolumeMountPoint);
|
||||
if (VolumeMountPointU == NULL)
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if ((ret = GetVolumeNameForVolumeMountPointW( pathW, volumeW, len )))
|
||||
FilenameW2A_N( lpszVolumeName, len, volumeW, -1 );
|
||||
/* Initialize the strings we'll use for convention */
|
||||
VolumeName.Buffer = lpszVolumeName;
|
||||
VolumeName.Length = 0;
|
||||
VolumeName.MaximumLength = cchBufferLength - 1;
|
||||
|
||||
RtlFreeHeap( RtlGetProcessHeap(), 0, pathW );
|
||||
return ret;
|
||||
VolumeNameU.Length = 0;
|
||||
VolumeNameU.MaximumLength = (cchBufferLength - 1) * sizeof(WCHAR) + sizeof(UNICODE_NULL);
|
||||
/* Allocate a buffer big enough to contain the returned name */
|
||||
VolumeNameU.Buffer = RtlAllocateHeap(RtlGetProcessHeap(), 0, VolumeNameU.MaximumLength);
|
||||
if (VolumeNameU.Buffer == NULL)
|
||||
{
|
||||
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
/* Query -W */
|
||||
Ret = GetVolumeNameForVolumeMountPointW(VolumeMountPointU->Buffer, VolumeNameU.Buffer, cchBufferLength);
|
||||
/* If it succeed, perform -A conversion */
|
||||
if (Ret)
|
||||
{
|
||||
NTSTATUS Status;
|
||||
|
||||
/* Reinit our string for length */
|
||||
RtlInitUnicodeString(&VolumeNameU, VolumeNameU.Buffer);
|
||||
/* Convert to ANSI */
|
||||
Status = RtlUnicodeStringToAnsiString(&VolumeName, &VolumeNameU, FALSE);
|
||||
/* If conversion failed, force failure, otherwise, just null terminate */
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
Ret = FALSE;
|
||||
BaseSetLastNTError(Status);
|
||||
}
|
||||
else
|
||||
{
|
||||
VolumeName.Buffer[VolumeName.Length] = ANSI_NULL;
|
||||
}
|
||||
}
|
||||
|
||||
/* Internal buffer no longer needed */
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, VolumeNameU.Buffer);
|
||||
|
||||
return Ret;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
|
|||
Loading…
Reference in a new issue