Re: [Qemu-devel] [PATCH] qdev-property: Make bit property parsing stricter

["Andreas Färber" <afaerber@suse.de>]

Am 21.01.2012 14:43, schrieb Jan Kiszka:
> By using strncasecmp, we allow for arbitrary characters after the
> "on"/"off" string. Fix this by switching to strcasecmp.
> 
> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

Reviewed-by: Andreas Färber <afaerber@suse.de>

An alternative might be to increase the char count by one. For a const
char* parameter I see the responsibility for nul-terminating at the
caller though, so this seems right. Did you check all callers?

Andreas

> ---
>  hw/qdev-properties.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/hw/qdev-properties.c b/hw/qdev-properties.c
> index 02f0dae..ea3b2df 100644
> --- a/hw/qdev-properties.c
> +++ b/hw/qdev-properties.c
> @@ -40,9 +40,9 @@ static void qdev_prop_cpy(DeviceState *dev, Property *props, void *src)
>  /* Bit */
>  static int parse_bit(DeviceState *dev, Property *prop, const char *str)
>  {
> -    if (!strncasecmp(str, "on", 2))
> +    if (!strcasecmp(str, "on"))
>          bit_prop_set(dev, prop, true);
> -    else if (!strncasecmp(str, "off", 3))
> +    else if (!strcasecmp(str, "off"))
>          bit_prop_set(dev, prop, false);
>      else
>          return -EINVAL;

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