IoVolume.c File Reference

#include <kmt_test.h>
#include <mountmgr.h>

Include dependency graph for IoVolume.c:

Go to the source code of this file.

Functions
static void	TestIoVolumeDeviceToDosName (void)
	START_TEST (IoVolume)

Function Documentation

START_TEST()

START_TEST

(

IoVolume

)

Definition at line 95 of file IoVolume.c.

{
    TestIoVolumeDeviceToDosName();
}

TestIoVolumeDeviceToDosName()

static void TestIoVolumeDeviceToDosName ( void  )

static

Definition at line 13 of file IoVolume.c.

{
    NTSTATUS Status;
    ULONG VolumeNumber;
    WCHAR VolumeDeviceNameBuffer[32];
    UNICODE_STRING VolumeDeviceName;
    PFILE_OBJECT FileObject;
    PDEVICE_OBJECT DeviceObject;
    UNICODE_STRING DosName;
    UNICODE_STRING DosVolumePrefix = RTL_CONSTANT_STRING(L"\\\\?\\Volume");
 
    RtlInitEmptyUnicodeString(&VolumeDeviceName,
                              VolumeDeviceNameBuffer,
                              sizeof(VolumeDeviceNameBuffer));
    // TODO: Query the partition/volume manager for the list of volumes.
    for (VolumeNumber = 0; VolumeNumber < 32; ++VolumeNumber)
    {
        Status = RtlStringCbPrintfW(VolumeDeviceName.Buffer,
                                    VolumeDeviceName.MaximumLength,
                                    L"\\Device\\HarddiskVolume%lu",
                                    VolumeNumber);
        if (!NT_SUCCESS(Status))
        {
            trace("RtlStringCbPrintfW(%lu) failed with 0x%lx\n",
                  VolumeNumber, Status);
            break;
        }
 
        RtlInitUnicodeString(&VolumeDeviceName, VolumeDeviceNameBuffer);
        Status = IoGetDeviceObjectPointer(&VolumeDeviceName,
                                          READ_CONTROL,
                                          &FileObject,
                                          &DeviceObject);
        if (!NT_SUCCESS(Status))
        {
            trace("IoGetDeviceObjectPointer(%wZ) failed with 0x%lx\n",
                  &VolumeDeviceName, Status);
            continue;
        }
 
        Status = IoVolumeDeviceToDosName(DeviceObject, &DosName);
        ok_eq_hex(Status, STATUS_SUCCESS);
        if (!skip(NT_SUCCESS(Status), "No DOS name\n"))
        {
            trace("DOS name for %wZ is %wZ\n", &VolumeDeviceName, &DosName);
 
            /* The DosName should contain one NUL-terminated string (always there?),
             * plus one final NUL-terminator */
            ok(DosName.MaximumLength == DosName.Length + sizeof(UNICODE_NULL),
               "Unexpected DOS name maximum length %hu, expected %hu\n",
               DosName.MaximumLength, DosName.Length + sizeof(UNICODE_NULL));
            ok(DosName.Length >= sizeof(UNICODE_NULL),
               "DOS name too short (length: %lu)\n",
               DosName.Length / sizeof(WCHAR));
            ok(DosName.Buffer[DosName.Length / sizeof(WCHAR)] == UNICODE_NULL,
               "Missing NUL-terminator (1)\n");
            ok(DosName.Buffer[DosName.MaximumLength / sizeof(WCHAR) - 1] == UNICODE_NULL,
               "Missing NUL-terminator (2)\n");
 
            /* The DOS name is either a drive letter, or a
             * volume GUID name (if the volume is not mounted) */
            if (DosName.Length == 2 * sizeof(WCHAR))
            {
                ok(DosName.Buffer[0] >= L'A' &&
                   DosName.Buffer[0] <= L'Z' &&
                   DosName.Buffer[1] == L':',
                   "Unexpected drive letter: %wZ\n", &DosName);
            }
            else
            {
                ok(RtlPrefixUnicodeString(&DosVolumePrefix, &DosName, FALSE),
                   "Unexpected volume path: %wZ\n", &DosName);
                ok(MOUNTMGR_IS_DOS_VOLUME_NAME(&DosName),
                   "Invalid DOS volume path returned: %wZ\n", &DosName);
            }
            RtlFreeUnicodeString(&DosName);
        }
        ObDereferenceObject(FileObject);
    }
    ok(VolumeNumber > 1, "No volumes found\n");
}

Referenced by START_TEST().