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Message-ID: <20231208095817.5aa69755@kernel.org>
Date: Fri, 8 Dec 2023 09:58:17 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: David Wei <dw@...idwei.uk>
Cc: netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>, Eric
 Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>
Subject: Re: [PATCH net-next 1/3] netdevsim: allow two netdevsim ports to be

On Thu,  7 Dec 2023 09:21:15 -0800 David Wei wrote:
> +	ret = copy_from_user(buf, data, count);
> +	if (ret)
> +		return -EFAULT;
> +	buf[count] = '\0';
> +
> +	cur = buf;
> +	token = strsep(&cur, " ");
> +	if (!token)
> +		return -EINVAL;
> +	ret = kstrtouint(token, 10, &id);
> +	if (ret)
> +		return ret;
> +
> +	token = strsep(&cur, " ");
> +	if (!token)
> +		return -EINVAL;
> +	ret = kstrtouint(token, 10, &port);
> +	if (ret)
> +		return ret;
> +
> +	/* too many args */
> +	if (strsep(&cur, " "))
> +		return -E2BIG;

What's wrong with scanf?

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