Re: [Qemu-devel] [PATCH v5 4/6] qdev: Add a function to rename busses

[Peter Crosthwaite <crosthwaitepeter@gmail.com>]

On Wed, Dec 16, 2015 at 1:45 PM, Alistair Francis
<alistair.francis@xilinx.com> wrote:
> Add a function which can be used to rename busses.
>
> Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
> ---
>
>  hw/core/qdev.c         | 5 +++++
>  include/hw/qdev-core.h | 2 ++
>  2 files changed, 7 insertions(+)
>
> diff --git a/hw/core/qdev.c b/hw/core/qdev.c
> index b3ad467..29a3e9d 100644
> --- a/hw/core/qdev.c
> +++ b/hw/core/qdev.c
> @@ -590,6 +590,11 @@ BusState *qdev_get_child_bus(DeviceState *dev, const char *name)
>      return NULL;
>  }
>
> +void qdev_bus_rename(BusState *bus, const char *name)
> +{
> +        memcpy((char *) bus->name, name, strlen(name) * sizeof(char));

sizeof(char) not needed, but wont this assume the current name is long
enough to hold the new name? Should name just be strduped and the old
name freed?

Regards,
Peter

> +}
> +
>  int qbus_walk_children(BusState *bus,
>                         qdev_walkerfn *pre_devfn, qbus_walkerfn *pre_busfn,
>                         qdev_walkerfn *post_devfn, qbus_walkerfn *post_busfn,
> diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h
> index c537969..9653f4d 100644
> --- a/include/hw/qdev-core.h
> +++ b/include/hw/qdev-core.h
> @@ -297,6 +297,8 @@ qemu_irq qdev_intercept_gpio_out(DeviceState *dev, qemu_irq icpt,
>
>  BusState *qdev_get_child_bus(DeviceState *dev, const char *name);
>
> +void qdev_bus_rename(BusState *bus, const char *name);
> +
>  /*** Device API.  ***/
>
>  /* Register device properties.  */
> --
> 2.5.0
>