linux-kernel - Re: [ PATCH v4 3/6] sign-file: add support sign modules in bulk

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Date:   Tue, 14 Mar 2023 16:13:31 +0000
From:   David Howells <dhowells@...hat.com>
To:     Shreenidhi Shedi <yesshedi@...il.com>
Cc:     dhowells@...hat.com, dwmw2@...radead.org,
        gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        sshedi@...are.com
Subject: Re: [ PATCH v4 3/6] sign-file: add support sign modules in bulk

Shreenidhi Shedi <yesshedi@...il.com> wrote:

> @@ -378,6 +385,16 @@ static int sign_file(int argc, char **argv, struct cmd_opts *opts)
>  	use_signed_attrs = PKCS7_NOATTR;
>  #endif
>  
> +	for (i = 0; i < argc; i++) {
> +		module_name = argv[i];
> +
> +		if (bulk_sign) {
> +			ERR(asprintf(&dest_name, "%s.~signed~", module_name) < 0,
> +					"asprintf");
> +			if (!replace_orig)
> +				replace_orig = true;
> +		}
> +
>  	/* Open the module file */
>  	bm = BIO_new_file(module_name, "rb");
>  	ERR(!bm, "%s", module_name);
> @@ -486,6 +503,7 @@ static int sign_file(int argc, char **argv, struct cmd_opts *opts)
>  	/* Finally, if we're signing in place, replace the original. */
>  	if (replace_orig)
>  		ERR(rename(dest_name, module_name) < 0, "%s", dest_name);
> +	}
>  
>  	return 0;
>  }

This looks a bit weird (I know the next patch applies the indent).  I would
recommend putting the existing part of the loop body into its own function -
say sign_one_file() - and then call that from the loop.

David