Re: [PATCH v3 2/6] sign-file: move file signing logic to its own function

[Greg KH <gregkh@linuxfoundation.org>]

On Tue, Feb 14, 2023 at 12:30:30AM +0530, Shreenidhi Shedi wrote:
> Keep the main function bare minimal and do less in main function.
> 
> Signed-off-by: Shreenidhi Shedi <sshedi@vmware.com>
> ---
>  scripts/sign-file.c | 69 +++++++++++++++++++++++++--------------------
>  1 file changed, 39 insertions(+), 30 deletions(-)
> 
> diff --git a/scripts/sign-file.c b/scripts/sign-file.c
> index cf3acbb13013..4732201feb96 100644
> --- a/scripts/sign-file.c
> +++ b/scripts/sign-file.c
> @@ -230,7 +230,7 @@ struct cmd_opts {
>  #endif
>  };
>  
> -void parse_args(int argc, char **argv, struct cmd_opts *opts)
> +static void parse_args(int argc, char **argv, struct cmd_opts *opts)
>  {
>  	struct option cmd_options[] = {
>  		/* These options set a flag. */
> @@ -315,10 +315,10 @@ void parse_args(int argc, char **argv, struct cmd_opts *opts)
>  	} while (opt != -1);
>  }
>  
> -int main(int argc, char **argv)
> +int sign_file(int argc, char **argv, struct cmd_opts *opts)
>  {
>  	struct module_signature sig_info = { .id_type = PKEY_ID_PKCS7 };
> -	unsigned char buf[4096];
> +	unsigned char buf[4096] = {0};
>  	unsigned long module_size, sig_size;
>  	unsigned int use_signed_attrs;
>  	const EVP_MD *digest_algo;
> @@ -331,36 +331,20 @@ int main(int argc, char **argv)
>  	X509 *x509;
>  	BIO *bd, *bm;
>  	int i, n;
> -	struct cmd_opts opts = {0};
>  
> -	OpenSSL_add_all_algorithms();
> -	ERR_load_crypto_strings();
> -	ERR_clear_error();
> -
> -	key_pass = getenv("KBUILD_SIGN_PIN");
> +	char *hash_algo = opts->hash_algo;
> +	char *dest_name = opts->dest_name;
> +	char *private_key_name = opts->private_key_name;
> +	char *raw_sig_name = opts->raw_sig_name;
> +	char *x509_name = opts->x509_name;
> +	char *module_name = opts->module_name;
> +	bool save_sig = opts->save_sig;
> +	bool replace_orig = opts->replace_orig;
> +	bool raw_sig = opts->raw_sig;
> +	bool sign_only = opts->sign_only;
>  
>  #ifndef USE_PKCS7
> -	use_signed_attrs = CMS_NOATTR;
> -#else
> -	use_signed_attrs = PKCS7_NOATTR;
> -#endif
> -	parse_args(argc, argv, &opts);
> -	argc -= optind;
> -	argv += optind;
> -
> -	char *hash_algo = opts.hash_algo;
> -	char *dest_name = opts.dest_name;
> -	char *private_key_name = opts.private_key_name;
> -	char *raw_sig_name = opts.raw_sig_name;
> -	char *x509_name = opts.x509_name;
> -	char *module_name = opts.module_name;
> -	bool save_sig = opts.save_sig;
> -	bool replace_orig = opts.replace_orig;
> -	bool raw_sig = opts.raw_sig;
> -	bool sign_only = opts.sign_only;
> -
> -#ifndef USE_PKCS7
> -	unsigned int use_keyid = opts.use_keyid;
> +	unsigned int use_keyid = opts->use_keyid;
>  #endif
>  
>  	if (!argv[0] || argc != 1)
> @@ -381,6 +365,19 @@ int main(int argc, char **argv)
>  		exit(3);
>  	}
>  #endif
> +
> +	OpenSSL_add_all_algorithms();
> +	ERR_load_crypto_strings();
> +	ERR_clear_error();
> +
> +	key_pass = getenv("KBUILD_SIGN_PIN");
> +
> +#ifndef USE_PKCS7
> +	use_signed_attrs = CMS_NOATTR;
> +#else
> +	use_signed_attrs = PKCS7_NOATTR;
> +#endif
> +
>  	/* Open the module file */
>  	bm = BIO_new_file(module_name, "rb");
>  	ERR(!bm, "%s", module_name);
> @@ -492,3 +489,15 @@ int main(int argc, char **argv)
>  
>  	return 0;
>  }
> +
> +int main(int argc, char **argv)
> +{
> +	struct cmd_opts opts = {0};
> +
> +	parse_args(argc, argv, &opts);
> +
> +	argc -= optind;
> +	argv += optind;
> +
> +	return sign_file(argc, argv, &opts);
> +}
> -- 
> 2.39.1
> 


Hi,

This is the friendly patch-bot of Greg Kroah-Hartman.  You have sent him
a patch that has triggered this response.  He used to manually respond
to these common problems, but in order to save his sanity (he kept
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created.  Hopefully you will not take offence and will fix the problem
in your patch and resubmit it so that it can be accepted into the Linux
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You are receiving this message because of the following common error(s)
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  Please read the section entitled "The canonical patch format" in the
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If you wish to discuss this problem further, or you have questions about
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