linux-kernel - Re: [PATCH v2] kdb: Refactor env variables get/set code

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Date:   Fri, 5 Feb 2021 17:36:27 +0000
From:   Daniel Thompson <daniel.thompson@...aro.org>
To:     Sumit Garg <sumit.garg@...aro.org>
Cc:     kgdb-bugreport@...ts.sourceforge.net, jason.wessel@...driver.com,
        dianders@...omium.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] kdb: Refactor env variables get/set code

On Thu, Feb 04, 2021 at 03:44:20PM +0530, Sumit Garg wrote:
> @@ -318,6 +318,65 @@ int kdbgetintenv(const char *match, int *value)
>  }
>  
>  /*
> + * kdb_setenv() - Alter an existing environment variable or create a new one.
> + * @var: Name of the variable
> + * @val: Value of the variable
> + *
> + * Return: Zero on success, a kdb diagnostic on failure.
> + */
> +static int kdb_setenv(const char *var, const char *val)
> +{
> +	int i;
> +	char *ep;
> +	size_t varlen, vallen;
> +
> +	varlen = strlen(var);
> +	vallen = strlen(val);
> +	ep = kdballocenv(varlen + vallen + 2);
> +	if (ep == (char *)0)
> +		return KDB_ENVBUFFULL;
> +
> +	sprintf(ep, "%s=%s", var, val);
> +
> +	ep[varlen+vallen+1] = '\0';

What is this line for? It looks pointless to me.

I know it's copied from the original code but it doesn't look like the
sort of code you should want your name to appear next to in a git blame
;-) .


Daniel.