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dll: FspFileSystemSetMountPoint

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This commit is contained in:
Bill Zissimopoulos
2016-04-08 14:12:56 -07:00
parent edf5eb2219
commit 5b917c4566
2 changed files with 80 additions and 0 deletions
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77
src/dll/dispatch.c
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@@ -64,10 +64,87 @@ FSP_API NTSTATUS FspFileSystemCreate(PWSTR DevicePath,
FSP_API VOID FspFileSystemDelete(FSP_FILE_SYSTEM *FileSystem)
{
FspFileSystemRemoveMountPoint(FileSystem);
CloseHandle(FileSystem->VolumeHandle);
MemFree(FileSystem);
}
FSP_API NTSTATUS FspFileSystemSetMountPoint(FSP_FILE_SYSTEM *FileSystem, PWSTR MountPoint)
{
if (0 != FileSystem->MountPoint)
return STATUS_INVALID_PARAMETER;
if (0 == MountPoint)
{
DWORD Drives;
WCHAR Drive;
MountPoint = MemAlloc(3 * sizeof(WCHAR));
if (0 == MountPoint)
return STATUS_INSUFFICIENT_RESOURCES;
MountPoint[1] = L':';
MountPoint[1] = L'\0';
Drives = GetLogicalDrives();
if (0 != Drives)
{
for (Drive = 'Z'; 'D' <= Drive; Drive--)
if (0 == (Drives & (1 << (Drive - 'A'))))
{
MountPoint[0] = Drive;
if (DefineDosDeviceW(DDD_RAW_TARGET_PATH, MountPoint, FileSystem->VolumeName))
{
FileSystem->MountPoint = MountPoint;
return STATUS_SUCCESS;
}
}
SetLastError(ERROR_FILE_NOT_FOUND);
}
MemFree(MountPoint);
return FspNtStatusFromWin32(GetLastError());
}
else
{
PWSTR P;
ULONG L;
for (P = MountPoint; *P; P++)
;
L = (ULONG)((P - MountPoint + 1) * sizeof(WCHAR));
P = MemAlloc(L);
if (0 == P)
return STATUS_INSUFFICIENT_RESOURCES;
memcpy(P, MountPoint, L);
MountPoint = P;
if (DefineDosDeviceW(DDD_RAW_TARGET_PATH, MountPoint, FileSystem->VolumeName))
{
FileSystem->MountPoint = MountPoint;
return STATUS_SUCCESS;
}
MemFree(MountPoint);
return FspNtStatusFromWin32(GetLastError());
}
}
FSP_API VOID FspFileSystemRemoveMountPoint(FSP_FILE_SYSTEM *FileSystem)
{
if (0 == FileSystem->MountPoint)
return;
DefineDosDeviceW(DDD_RAW_TARGET_PATH | DDD_REMOVE_DEFINITION | DDD_EXACT_MATCH_ON_REMOVE,
FileSystem->MountPoint, FileSystem->VolumeName);
MemFree(FileSystem->MountPoint);
FileSystem->MountPoint = 0;
}
static DWORD WINAPI FspFileSystemDispatcherThread(PVOID FileSystem0)
{
FSP_FILE_SYSTEM *FileSystem = FileSystem0;