On Wed, 2014-07-30 at 22:32 +0200, Rickard Strandqvist wrote:
> Possible error if incorrect in parameter, count = 0.
> And clarified what the code actually does significantly.
>
> Signed-off-by: Rickard Strandqvist <rickard_strandqvist@xxxxxxxxxxxxxxxxxx>
> ---
> drivers/s390/net/claw.c | 24 ++++++++++++------------
> 1 file changed, 12 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/s390/net/claw.c b/drivers/s390/net/claw.c
> index d837c3c..8d5b7b6 100644
> --- a/drivers/s390/net/claw.c
> +++ b/drivers/s390/net/claw.c
> @@ -3070,10 +3070,10 @@ claw_hname_write(struct device *dev, struct device_attribute *attr,
> p_env = priv->p_env;
> if (count > MAX_NAME_LEN+1)
> return -EINVAL;
> - memset(p_env->host_name, 0x20, MAX_NAME_LEN);
> - strncpy(p_env->host_name,buf, count);
> - p_env->host_name[count-1] = 0x20; /* clear extra 0x0a */
> - p_env->host_name[MAX_NAME_LEN] = 0x00;
> + strlcpy(p_env->host_name, buf,
> + sizeof(p_env->host_name));
> + strlcat(p_env->host_name, " ",
> + sizeof(p_env->host_name));
> CLAW_DBF_TEXT(2, setup, "HstnSet");
> CLAW_DBF_TEXT_(2, setup, "%s", p_env->host_name);
>
> @@ -3108,10 +3108,10 @@ claw_adname_write(struct device *dev, struct device_attribute *attr,
> p_env = priv->p_env;
> if (count > MAX_NAME_LEN+1)
> return -EINVAL;
> - memset(p_env->adapter_name, 0x20, MAX_NAME_LEN);
> - strncpy(p_env->adapter_name,buf, count);
> - p_env->adapter_name[count-1] = 0x20; /* clear extra 0x0a */
> - p_env->adapter_name[MAX_NAME_LEN] = 0x00;
> + strlcpy(p_env->adapter_name, buf,
> + sizeof(p_env->adapter_name));
> + strlcat(p_env->adapter_name, " ",
> + sizeof(p_env->adapter_name));
> CLAW_DBF_TEXT(2, setup, "AdnSet");
> CLAW_DBF_TEXT_(2, setup, "%s", p_env->adapter_name);
>
> @@ -3147,10 +3147,10 @@ claw_apname_write(struct device *dev, struct device_attribute *attr,
> p_env = priv->p_env;
> if (count > MAX_NAME_LEN+1)
> return -EINVAL;
> - memset(p_env->api_type, 0x20, MAX_NAME_LEN);
> - strncpy(p_env->api_type,buf, count);
> - p_env->api_type[count-1] = 0x20; /* we get a loose 0x0a */
> - p_env->api_type[MAX_NAME_LEN] = 0x00;
> + strlcpy(p_env->api_type, buf,
> + sizeof(p_env->api_type));
> + strlcat(p_env->api_type, " ",
> + sizeof(p_env->api_type));
> if(strncmp(p_env->api_type,WS_APPL_NAME_PACKED,6) == 0) {
> p_env->read_size=DEF_PACK_BUFSIZE;
> p_env->write_size=DEF_PACK_BUFSIZE;
These functions are invoked when echoing something into a sysfs
attribute. The smallest count value possible here is 1, i.e. just a
linefeed.
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