linux-kernel - Re: [PATCH] ktest: Add support for meta characters in GRUB

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Date:   Wed, 17 Apr 2019 16:17:39 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Masayoshi Mizuma <msys.mizuma@...il.com>
Cc:     Masayoshi Mizuma <m.mizuma@...fujitsu.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ktest: Add support for meta characters in GRUB_MENU

On Wed, 17 Apr 2019 16:11:14 -0400
Masayoshi Mizuma <msys.mizuma@...il.com> wrote:

> From: Masayoshi Mizuma <m.mizuma@...fujitsu.com>
> 
> ktest fails if meta characters are in GRUB_MENU, for example
> GRUB_MENU = 'Fedora (test)'
> 

Thanks for the patch! One little nit below though.

> The failure happens because the meta characters are not escaped,
> so the menu doesn't match in any entries in GRUB_FILE.
> 
> Use quotameta() to escape the meta characters.
> 
> Signed-off-by: Masayoshi Mizuma <m.mizuma@...fujitsu.com>
> ---
>  tools/testing/ktest/ktest.pl | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
> index 87af8a68ab25..ea07d43856b8 100755
> --- a/tools/testing/ktest/ktest.pl
> +++ b/tools/testing/ktest/ktest.pl
> @@ -1866,9 +1866,10 @@ sub get_grub2_index {
>  	or dodie "unable to get $grub_file";
>  
>      my $found = 0;
> +    my $_grub_menu = quotemeta($grub_menu);

I'd like to avoid names that start with underscore. Could you call this:

  $grub_menu_qt

or something similar, to be a bit more descriptive of what the variable
is.

Thanks!

-- Steve



>  
>      while (<IN>) {
> -	if (/^menuentry.*$grub_menu/) {
> +	if (/^menuentry.*$_grub_menu/) {
>  	    $grub_number++;
>  	    $found = 1;
>  	    last;
> @@ -1909,9 +1910,10 @@ sub get_grub_index {
>  	or dodie "unable to get menu.lst";
>  
>      my $found = 0;
> +    my $_grub_menu = quotemeta($grub_menu);
>  
>      while (<IN>) {
> -	if (/^\s*title\s+$grub_menu\s*$/) {
> +	if (/^\s*title\s+$_grub_menu\s*$/) {
>  	    $grub_number++;
>  	    $found = 1;
>  	    last;