BOOL WINAPI RemoveDirectoryW ( IN LPCWSTR lpPathName )
Definition at line 760 of file dir.c.
Referenced by cache_UninstallAssembly(), DeleteItemW(), DELNODE_recurse_dirtree(), free_assembly(), IAssemblyCacheImpl_UninstallAssembly(), IntDeleteRecursive(), ITERATE_RemoveFiles(), ITERATE_UnpublishIcon(), MoveFileWithProgressW(), pendingRename(), RecursiveRemoveDir(), remove_folder(), remove_persistent_folder(), RemoveDirectoryA(), RemoveDirectoryPath(), SHNotifyRemoveDirectoryW(), and uninstall_assembly().
{
    NTSTATUS Status;
    DWORD BytesReturned;
    HANDLE DirectoryHandle;
    IO_STATUS_BLOCK IoStatusBlock;
    UNICODE_STRING NtPathU, PathName;
    RTL_RELATIVE_NAME_U RelativeName;
    PWSTR PathUBuffer, SubstituteName;
    OBJECT_ATTRIBUTES ObjectAttributes;
    PREPARSE_DATA_BUFFER ReparseDataBuffer;
    FILE_DISPOSITION_INFORMATION FileDispInfo;
    FILE_ATTRIBUTE_TAG_INFORMATION FileTagInfo;

    /* Get relative name */
    if (!RtlDosPathNameToRelativeNtPathName_U(lpPathName, &NtPathU, NULL, &RelativeName))
    {
        SetLastError(ERROR_PATH_NOT_FOUND);
        return FALSE;
    }

    /* Save buffer to allow later freeing */
    PathUBuffer = NtPathU.Buffer;

    /* If we have relative name (and root dir), use them instead */
    if (RelativeName.RelativeName.Length != 0)
    {
        NtPathU.Length = RelativeName.RelativeName.Length;
        NtPathU.MaximumLength = RelativeName.RelativeName.MaximumLength;
        NtPathU.Buffer = RelativeName.RelativeName.Buffer;
    }
    else
    {
        RelativeName.ContainingDirectory = NULL;
    }

    InitializeObjectAttributes(&ObjectAttributes,
                               &NtPathU,
                               OBJ_CASE_INSENSITIVE,
                               RelativeName.ContainingDirectory,
                               NULL);

    /* Try to open directory */
    Status = NtOpenFile(&DirectoryHandle,
                        DELETE | SYNCHRONIZE | FAILED_ACCESS_ACE_FLAG,
                        &ObjectAttributes,
                        &IoStatusBlock,
                        FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
                        FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT |
                        FILE_OPEN_FOR_BACKUP_INTENT | FILE_OPEN_REPARSE_POINT);
    if (!NT_SUCCESS(Status))
    {
        /* We only accept failure for reparse points not being supported */
        if (Status != STATUS_INVALID_PARAMETER)
        {
            goto Cleanup;
        }

        /* Try to open, with reparse points support */
        Status = NtOpenFile(&DirectoryHandle,
                            DELETE | SYNCHRONIZE,
                            &ObjectAttributes,
                            &IoStatusBlock,
                            FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
                            FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT |
                            FILE_OPEN_FOR_BACKUP_INTENT);
        if (!NT_SUCCESS(Status))
        {
            goto Cleanup;
        }

        /* Success, mark directory */
        goto MarkFileForDelete;
    }

    /* Get information about file (and reparse point) */
    Status = NtQueryInformationFile(DirectoryHandle,
                                    &IoStatusBlock,
                                    &FileTagInfo,
                                    sizeof(FileTagInfo),
                                    FileAttributeTagInformation);
    if (!NT_SUCCESS(Status))
    {
        /* FSD might not support querying reparse points information */
        if (Status != STATUS_NOT_IMPLEMENTED &&
            Status != STATUS_INVALID_PARAMETER)
        {
            goto CleanupHandle;
        }

        /* If that's the case, then just delete directory */
        goto MarkFileForDelete;
    }

    /* If that's not a reparse point, nothing more to do than just delete */
    if (!(FileTagInfo.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT))
    {
        goto MarkFileForDelete;
    }

    /* Check if that's a mount point */
    if (FileTagInfo.ReparseTag != IO_REPARSE_TAG_MOUNT_POINT)
    {
        /* It's not */
        NtClose(DirectoryHandle);

        /* So, try to reopen directory, ignoring mount point */
        Status = NtOpenFile(&DirectoryHandle,
                            DELETE | SYNCHRONIZE,
                            &ObjectAttributes,
                            &IoStatusBlock,
                            FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
                            FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT |
                            FILE_OPEN_FOR_BACKUP_INTENT);
        if (NT_SUCCESS(Status))
        {
            /* It succeed, we can safely delete directory (and ignore reparse point) */
            goto MarkFileForDelete;
        }

        /* If it failed, only allow case where IO mount point was ignored */
        if (Status != STATUS_IO_REPARSE_TAG_NOT_HANDLED)
        {
            goto Cleanup;
        }

        /* Reopen with reparse point support */
        Status = NtOpenFile(&DirectoryHandle,
                            DELETE | SYNCHRONIZE,
                            &ObjectAttributes,
                            &IoStatusBlock,
                            FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
                            FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT |
                            FILE_OPEN_FOR_BACKUP_INTENT | FILE_OPEN_REPARSE_POINT);
        if (NT_SUCCESS(Status))
        {
            /* And mark for delete */
            goto MarkFileForDelete;
        }

        goto Cleanup;
    }

    /* Here, we have a mount point, prepare to query information about it */
    ReparseDataBuffer = RtlAllocateHeap(RtlGetProcessHeap(), 0,
                                        MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
    if (!ReparseDataBuffer)
    {
        RtlReleaseRelativeName(&RelativeName);
        RtlFreeHeap(RtlGetProcessHeap(), 0, PathUBuffer);
        NtClose(DirectoryHandle);
        SetLastError(ERROR_NOT_ENOUGH_MEMORY);
        return FALSE;
    }

    /* Query */
    if (!DeviceIoControl(DirectoryHandle,
                         FSCTL_GET_REPARSE_POINT,
                         NULL, 0,
                         ReparseDataBuffer,
                         MAXIMUM_REPARSE_DATA_BUFFER_SIZE,
                         &BytesReturned,
                         NULL))
    {
        RtlFreeHeap(RtlGetProcessHeap(), 0, ReparseDataBuffer);
        goto MarkFileForDelete;
    }

    /* Get volume name */
    SubstituteName = (PWSTR)((ULONG_PTR)ReparseDataBuffer->MountPointReparseBuffer.PathBuffer +
                             ReparseDataBuffer->MountPointReparseBuffer.SubstituteNameOffset);
    if (!IS_VOLUME_NAME(SubstituteName, ReparseDataBuffer->MountPointReparseBuffer.SubstituteNameLength))
    {
        /* This is not a volume, we can safely delete */
        RtlFreeHeap(RtlGetProcessHeap(), 0, ReparseDataBuffer);
        goto MarkFileForDelete;
    }

    /* Prepare to delete mount point */
    RtlInitUnicodeString(&PathName, lpPathName);
    PathName.Buffer = RtlAllocateHeap(RtlGetProcessHeap(), 0, PathName.Length + 2 * sizeof(WCHAR));
    if (!PathName.Buffer)
    {
        RtlReleaseRelativeName(&RelativeName);
        RtlFreeHeap(RtlGetProcessHeap(), 0, ReparseDataBuffer);
        NtClose(DirectoryHandle);
        SetLastError(ERROR_NOT_ENOUGH_MEMORY);
        return FALSE;
    }

    RtlCopyMemory(&PathName.Buffer, lpPathName, PathName.Length);
    if (PathName.Buffer[PathName.Length / sizeof(WCHAR)] != L'\\')
    {
        PathName.Buffer[PathName.Length / sizeof(WCHAR)] = L'\\';
        PathName.Buffer[(PathName.Length / sizeof(WCHAR)) + 1] = UNICODE_NULL;
    }

    /* Delete mount point for that volume */
    DeleteVolumeMountPointW(PathName.Buffer);
    RtlFreeHeap(RtlGetProcessHeap(), 0, PathName.Buffer);
    RtlFreeHeap(RtlGetProcessHeap(), 0, ReparseDataBuffer);

    /* And mark directory for delete */
MarkFileForDelete:
    RtlReleaseRelativeName(&RelativeName);
    RtlFreeHeap(RtlGetProcessHeap(), 0, PathUBuffer);

    /* Mark & set */
    FileDispInfo.DeleteFile = TRUE;
    Status = NtSetInformationFile(DirectoryHandle,
                                  &IoStatusBlock,
                                  &FileDispInfo,
                                  sizeof(FILE_DISPOSITION_INFORMATION),
                                  FileDispositionInformation);
    NtClose(DirectoryHandle);

    if (!NT_SUCCESS(Status))
    {
        BaseSetLastNTError(Status);
        return FALSE;
    }

    return TRUE;

CleanupHandle:
    NtClose(DirectoryHandle);

Cleanup:
    RtlReleaseRelativeName(&RelativeName);
    RtlFreeHeap(RtlGetProcessHeap(), 0, PathUBuffer);
    BaseSetLastNTError(Status);
    return FALSE;
}
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