Function Ext2CreateVolume

Ext4Fsd/create.c:1841–1950

}

NTSTATUS
Ext2CreateVolume(PEXT2_IRP_CONTEXT IrpContext, PEXT2_VCB Vcb)
{
    PIO_STACK_LOCATION  IrpSp;
    PIRP                Irp;
    PEXT2_CCB           Ccb;

    NTSTATUS            Status;

    ACCESS_MASK         DesiredAccess;
    ULONG               ShareAccess;

    ULONG               Options;
    BOOLEAN             DirectoryFile;
    BOOLEAN             OpenTargetDirectory;

    ULONG               CreateDisposition;

    Irp = IrpContext->Irp;
    IrpSp = IoGetCurrentIrpStackLocation(Irp);

    Options  = IrpSp->Parameters.Create.Options;

    DirectoryFile = IsFlagOn(Options, FILE_DIRECTORY_FILE);
    OpenTargetDirectory = IsFlagOn(IrpSp->Flags, SL_OPEN_TARGET_DIRECTORY);

    CreateDisposition = (Options >> 24) & 0x000000ff;

    DesiredAccess = IrpSp->Parameters.Create.SecurityContext->DesiredAccess;
    ShareAccess   = IrpSp->Parameters.Create.ShareAccess;

    if (DirectoryFile) {
        return STATUS_NOT_A_DIRECTORY;
    }

    if (OpenTargetDirectory) {
        DbgBreak();
        return STATUS_INVALID_PARAMETER;
    }

    if ( (CreateDisposition != FILE_OPEN) &&
            (CreateDisposition != FILE_OPEN_IF) ) {
        return STATUS_ACCESS_DENIED;
    }

    if ( !FlagOn(ShareAccess, FILE_SHARE_READ) &&
            Vcb->OpenVolumeCount  != 0 ) {
        return STATUS_SHARING_VIOLATION;
    }

    Ccb = Ext2AllocateCcb(0, NULL);
    if (Ccb == NULL) {
        Status = STATUS_INSUFFICIENT_RESOURCES;
        goto errorout;
    }

    Status = STATUS_SUCCESS;