linux-kernel - Re: [PATCH v2] ktest: Add support for meta characters in GRUB

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Date:   Wed, 17 Apr 2019 22:40:48 -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 v2] ktest: Add support for meta characters in GRUB_MENU

On Wed, 17 Apr 2019 19:58:23 -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)'
> 
> The failure happens because the meta characters are not escaped,
> so the menu doesn't match in any entries in GRUB_FILE.
> 
> Use quotemeta() to escape the meta characters.
> 
> Signed-off-by: Masayoshi Mizuma <m.mizuma@...fujitsu.com>

I applied this patch to my tree but haven't pushed it out. The ktest.pl
I use to test my kernels is a soft link to my development tree (where I
just added this patch). If it doesn't cause me any issues, I'll push it
to linux-next in a week or so and then push it to Linus after that.

-- Steve


> ---
>  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..fc6140d45280 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 $grub_menu_qt = quotemeta($grub_menu);
>  
>      while (<IN>) {
> -	if (/^menuentry.*$grub_menu/) {
> +	if (/^menuentry.*$grub_menu_qt/) {
>  	    $grub_number++;
>  	    $found = 1;
>  	    last;
> @@ -1909,9 +1910,10 @@ sub get_grub_index {
>  	or dodie "unable to get menu.lst";
>  
>      my $found = 0;
> +    my $grub_menu_qt = quotemeta($grub_menu);
>  
>      while (<IN>) {
> -	if (/^\s*title\s+$grub_menu\s*$/) {
> +	if (/^\s*title\s+$grub_menu_qt\s*$/) {
>  	    $grub_number++;
>  	    $found = 1;
>  	    last;