linux-kernel - Re: [PATCH 2/5] ktest: cleanup get_grub

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Date:   Thu, 9 May 2019 13:57:21 -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 2/5] ktest: cleanup get_grub_index

On Thu,  9 May 2019 13:46:27 -0400
Masayoshi Mizuma <msys.mizuma@...il.com> wrote:

> From: Masayoshi Mizuma <m.mizuma@...fujitsu.com>
> 
> Cleanup get_grub_index().

Hi Masayoshi,

Thanks for the patches, quick comment below.

> 
> Signed-off-by: Masayoshi Mizuma <m.mizuma@...fujitsu.com>
> ---
>  tools/testing/ktest/ktest.pl | 50 +++++++++++-------------------------
>  1 file changed, 15 insertions(+), 35 deletions(-)
> 
> diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
> index 3862b23672f7..1255ea0d9df4 100755
> --- a/tools/testing/ktest/ktest.pl
> +++ b/tools/testing/ktest/ktest.pl
> @@ -1934,46 +1934,26 @@ sub get_grub2_index {
>  
>  sub get_grub_index {
>  
> -    if ($reboot_type eq "grub2") {
> -	get_grub2_index;
> -	return;
> -    }
> -
> -    if ($reboot_type ne "grub") {
> -	return;
> -    }

We still need something like:

	if ($reboot_type !~ /^grub/) {
		return;
	}

Because I believe this will run (and probably error) for syslinux boot
systems. I have a couple, I could test it and find out ;-)

-- Steve

> -    return if (defined($grub_number) && defined($last_grub_menu) &&
> -	       $last_grub_menu eq $grub_menu && defined($last_machine) &&
> -	       $last_machine eq $machine);
> -
> -    doprint "Find grub menu ... ";
> -    $grub_number = -1;
> +    my $command;
> +    my $target;
> +    my $skip;
> +    my $grub_menu_qt;
>  
> -    my $ssh_grub = $ssh_exec;
> -    $ssh_grub =~ s,\$SSH_COMMAND,cat /boot/grub/menu.lst,g;
> +    return if ($reboot_type ne "grub") and ($reboot_type ne "grub2");
>  
> -    open(IN, "$ssh_grub |")
> -	or dodie "unable to get menu.lst";
> -
> -    my $found = 0;
> -    my $grub_menu_qt = quotemeta($grub_menu);
> +    $grub_menu_qt = quotemeta($grub_menu);
>  
> -    while (<IN>) {
> -	if (/^\s*title\s+$grub_menu_qt\s*$/) {
> -	    $grub_number++;
> -	    $found = 1;
> -	    last;
> -	} elsif (/^\s*title\s/) {
> -	    $grub_number++;
> -	}
> +    if ($reboot_type eq "grub") {
> +	$command = "cat /boot/grub/menu.lst";
> +	$target = '^\s*title\s+' . $grub_menu_qt . '\s*$';
> +	$skip = '^\s*title\s';
> +    } elsif ($reboot_type eq "grub2") {
> +	$command = "cat $grub_file";
> +	$target = '^menuentry.*' . $grub_menu_qt;
> +	$skip = '^menuentry\s|^submenu\s';
>      }
> -    close(IN);
>  
> -    dodie "Could not find '$grub_menu' in /boot/grub/menu on $machine"
> -	if (!$found);
> -    doprint "$grub_number\n";
> -    $last_grub_menu = $grub_menu;
> -    $last_machine = $machine;
> +    _get_grub_index($command, $target, $skip);
>  }
>  
>  sub wait_for_input