linux-kernel - Re: [PATCH] checkpatch: don't require octal permissions for "0"

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Date:   Mon, 11 Dec 2017 10:39:10 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Joe Perches <joe@...ches.com>
Cc:     Andy Whitcroft <apw@...onical.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] checkpatch: don't require octal permissions for "0"

2017-12-11 3:19 GMT+01:00 Joe Perches <joe@...ches.com>:
> On Sun, 2017-12-10 at 15:04 +0100, Bartosz Golaszewski wrote:
>> If the permission value is 0, don't raise the NON_OCTAL_PERMISSIONS
>> error. There's no possibility of an error if there are no permissions.
>>
>> Suggested-by: Andy Shevchenko <andy.shevchenko@...il.com>
>> Signed-off-by: Bartosz Golaszewski <brgl@...ev.pl>
>> ---
>>  scripts/checkpatch.pl | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
>> index 6b130a4116fa..ea98e298d3ac 100755
>> --- a/scripts/checkpatch.pl
>> +++ b/scripts/checkpatch.pl
>> @@ -6321,7 +6321,7 @@ sub process {
>>                               if ($stat =~ /$test/) {
>>                                       my $val = $1;
>>                                       $val = $6 if ($skip_args ne "");
>> -                                     if (($val =~ /^$Int$/ && $val !~ /^$Octal$/) ||
>> +                                     if (($val ne "0" && $val =~ /^$Int$/ && $val !~ /^$Octal$/) ||
>>                                           ($val =~ /^$Octal$/ && length($val) ne 4)) {
>>                                               ERROR("NON_OCTAL_PERMISSIONS",
>>                                                     "Use 4 digit octal (0777) not decimal permissions\n" . "$here\n" . $stat_real);
>
> perhaps
> ---
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 6b130a4116fa..950bbc0e6e3f 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -6321,7 +6321,8 @@ sub process {
>                                 if ($stat =~ /$test/) {
>                                         my $val = $1;
>                                         $val = $6 if ($skip_args ne "");
> -                                       if (($val =~ /^$Int$/ && $val !~ /^$Octal$/) ||
> +                                       if ($func !~ /^module_param/ &&
> +                                           ($val =~ /^$Int$/ && $val !~ /^$Octal$/) ||
>                                             ($val =~ /^$Octal$/ && length($val) ne 4)) {
>                                                 ERROR("NON_OCTAL_PERMISSIONS",
>                                                       "Use 4 digit octal (0777) not decimal permissions\n" . "$here\n" . $stat_real);

I would still check for octal permissions for anything else but "0"
here. I'll send a patch shortly.

Thanks,
Bartosz