[PATCH v6] checkpatch: warn for non-standard fixes tag style

Niklas Söderlund posted 1 patch 3 years, 7 months ago
There is a newer version of this series
Documentation/dev-tools/checkpatch.rst |  8 +++++
scripts/checkpatch.pl                  | 43 ++++++++++++++++++++++++++
2 files changed, 51 insertions(+)
[PATCH v6] checkpatch: warn for non-standard fixes tag style
Posted by Niklas Söderlund 3 years, 7 months ago
Add a warning for fixes tags that does not fall in line with the
standards specified by the community.

Signed-off-by: Niklas Söderlund <niklas.soderlund@corigine.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Louis Peens <louis.peens@corigine.com>
---
* Changes since v5
- Add support for --fix option for checkpatch.pl.

* Changes since v4
- Extend test to cover lines with whitespace before the fixes: tag, e.g.
  match check on /^\s*fixes:?/i.

* Changes since v3
- Add test that title in tag match title of commit referenced by sha1.

* Changes since v2
- Change the pattern to match on 'fixes:?' to catch more malformed
  tags.

* Changes since v1
- Update the documentation wording and add mention one cause of the
  message can be that email program splits the tag over multiple lines.
---
 Documentation/dev-tools/checkpatch.rst |  8 +++++
 scripts/checkpatch.pl                  | 43 ++++++++++++++++++++++++++
 2 files changed, 51 insertions(+)

diff --git a/Documentation/dev-tools/checkpatch.rst b/Documentation/dev-tools/checkpatch.rst
index b52452bc2963..8c8456a3bd18 100644
--- a/Documentation/dev-tools/checkpatch.rst
+++ b/Documentation/dev-tools/checkpatch.rst
@@ -612,6 +612,14 @@ Commit message
 
     See: https://www.kernel.org/doc/html/latest/process/submitting-patches.html#describe-your-changes
 
+  **BAD_FIXES_TAG**
+    The Fixes: tag is malformed or does not fall in line with the standards
+    specified by the community. This can occur if the tag have been split into
+    multiple lines (e.g., when pasted in email program with word wrapping
+    enabled).
+
+    See: https://www.kernel.org/doc/html/latest/process/submitting-patches.html#describe-your-changes
+
 
 Comparison style
 ----------------
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 79e759aac543..77f577535fc3 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3140,6 +3140,49 @@ sub process {
 			}
 		}
 
+# Check Fixes: styles is correct
+		if (!$in_header_lines && $line =~ /^\s*fixes:?/i) {
+			my $orig_commit = "";
+			my $id = "0123456789ab";
+			my $title = "commit title";
+			my $tag_case = 1;
+			my $tag_space = 1;
+			my $id_length = 1;
+			my $id_case = 1;
+			my $title_has_quotes = 0;
+
+			if ($line =~ /(\s*fixes:?)\s+([0-9a-f]{5,})\s+($balanced_parens)/i) {
+				my $tag = $1;
+				$orig_commit = $2;
+				$title = $3;
+
+				$tag_case = 0 if $tag eq "Fixes:";
+				$tag_space = 0 if ($line =~ /^fixes:? [0-9a-f]{5,} ($balanced_parens)/i);
+
+				$id_length = 0 if ($orig_commit =~ /^[0-9a-f]{12}$/i);
+				$id_case = 0 if ($orig_commit !~ /[A-F]/);
+
+				# Always strip leading/trailing parens then double quotes if existing
+				$title = substr($title, 1, -1);
+				if ($title =~ /^".*"$/) {
+					$title = substr($title, 1, -1);
+					$title_has_quotes = 1;
+				}
+			}
+
+			my ($cid, $ctitle) = git_commit_info($orig_commit, $id,
+							     $title);
+
+			if ($ctitle ne $title || $tag_case || $tag_space ||
+			    $id_length || $id_case || !$title_has_quotes) {
+				if (WARN("BAD_FIXES_TAG",
+				     "Please use correct Fixes: style 'Fixes: <12 chars of sha1> (\"<title line>\")' - ie: 'Fixes: $cid (\"$ctitle\")'\n" . $herecurr) &&
+				    $fix) {
+					$fixed[$fixlinenr] = "Fixes: $cid (\"$ctitle\")";
+				}
+			}
+		}
+
 # Check email subject for common tools that don't need to be mentioned
 		if ($in_header_lines &&
 		    $line =~ /^Subject:.*\b(?:checkpatch|sparse|smatch)\b[^:]/i) {
-- 
2.37.3

Re: [PATCH v6] checkpatch: warn for non-standard fixes tag style
Posted by Philippe Schenker 3 years, 6 months ago
On Sat, 2022-09-10 at 10:38 +0200, Niklas Söderlund wrote:
> Add a warning for fixes tags that does not fall in line with the
> standards specified by the community.
> 
> Signed-off-by: Niklas Söderlund <niklas.soderlund@corigine.com>
> Reviewed-by: Simon Horman <simon.horman@corigine.com>
> Reviewed-by: Louis Peens <louis.peens@corigine.com>

Reviewed-by: Philippe Schenker <philippe.schenker@toradex.com>

> ---
> * Changes since v5
> - Add support for --fix option for checkpatch.pl.
> 
> * Changes since v4
> - Extend test to cover lines with whitespace before the fixes: tag,
> e.g.
>   match check on /^\s*fixes:?/i.
> 
> * Changes since v3
> - Add test that title in tag match title of commit referenced by sha1.
> 
> * Changes since v2
> - Change the pattern to match on 'fixes:?' to catch more malformed
>   tags.
> 
> * Changes since v1
> - Update the documentation wording and add mention one cause of the
>   message can be that email program splits the tag over multiple
> lines.
> ---
>  Documentation/dev-tools/checkpatch.rst |  8 +++++
>  scripts/checkpatch.pl                  | 43
> ++++++++++++++++++++++++++
>  2 files changed, 51 insertions(+)
> 
> diff --git a/Documentation/dev-tools/checkpatch.rst
> b/Documentation/dev-tools/checkpatch.rst
> index b52452bc2963..8c8456a3bd18 100644
> --- a/Documentation/dev-tools/checkpatch.rst
> +++ b/Documentation/dev-tools/checkpatch.rst
> @@ -612,6 +612,14 @@ Commit message
>  
>      See:
> https://www.kernel.org/doc/html/latest/process/submitting-patches.html#describe-your-changes
>  
> +  **BAD_FIXES_TAG**
> +    The Fixes: tag is malformed or does not fall in line with the
> standards
> +    specified by the community. This can occur if the tag have been
> split into
> +    multiple lines (e.g., when pasted in email program with word
> wrapping
> +    enabled).
> +
> +    See:
> https://www.kernel.org/doc/html/latest/process/submitting-patches.html#describe-your-changes
> +
>  
>  Comparison style
>  ----------------
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 79e759aac543..77f577535fc3 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -3140,6 +3140,49 @@ sub process {
>                         }
>                 }
>  
> +# Check Fixes: styles is correct
> +               if (!$in_header_lines && $line =~ /^\s*fixes:?/i) {
> +                       my $orig_commit = "";
> +                       my $id = "0123456789ab";
> +                       my $title = "commit title";
> +                       my $tag_case = 1;
> +                       my $tag_space = 1;
> +                       my $id_length = 1;
> +                       my $id_case = 1;
> +                       my $title_has_quotes = 0;
> +
> +                       if ($line =~ /(\s*fixes:?)\s+([0-9a-
> f]{5,})\s+($balanced_parens)/i) {
> +                               my $tag = $1;
> +                               $orig_commit = $2;
> +                               $title = $3;
> +
> +                               $tag_case = 0 if $tag eq "Fixes:";
> +                               $tag_space = 0 if ($line =~ /^fixes:?
> [0-9a-f]{5,} ($balanced_parens)/i);
> +
> +                               $id_length = 0 if ($orig_commit =~
> /^[0-9a-f]{12}$/i);
> +                               $id_case = 0 if ($orig_commit !~ /[A-
> F]/);
> +
> +                               # Always strip leading/trailing parens
> then double quotes if existing
> +                               $title = substr($title, 1, -1);
> +                               if ($title =~ /^".*"$/) {
> +                                       $title = substr($title, 1, -
> 1);
> +                                       $title_has_quotes = 1;
> +                               }
> +                       }
> +
> +                       my ($cid, $ctitle) =
> git_commit_info($orig_commit, $id,
> +                                                            $title);
> +
> +                       if ($ctitle ne $title || $tag_case ||
> $tag_space ||
> +                           $id_length || $id_case ||
> !$title_has_quotes) {
> +                               if (WARN("BAD_FIXES_TAG",
> +                                    "Please use correct Fixes: style
> 'Fixes: <12 chars of sha1> (\"<title line>\")' - ie: 'Fixes: $cid
> (\"$ctitle\")'\n" . $herecurr) &&
> +                                   $fix) {
> +                                       $fixed[$fixlinenr] = "Fixes:
> $cid (\"$ctitle\")";
> +                               }
> +                       }
> +               }
> +
>  # Check email subject for common tools that don't need to be
> mentioned
>                 if ($in_header_lines &&
>                     $line =~
> /^Subject:.*\b(?:checkpatch|sparse|smatch)\b[^:]/i) {

Re: [PATCH v6] checkpatch: warn for non-standard fixes tag style
Posted by Dwaipayan Ray 3 years, 6 months ago
On Sun, Sep 11, 2022 at 9:08 PM Philippe Schenker
<philippe.schenker@toradex.com> wrote:
>
> On Sat, 2022-09-10 at 10:38 +0200, Niklas Söderlund wrote:
> > Add a warning for fixes tags that does not fall in line with the
> > standards specified by the community.
> >
> > Signed-off-by: Niklas Söderlund <niklas.soderlund@corigine.com>
> > Reviewed-by: Simon Horman <simon.horman@corigine.com>
> > Reviewed-by: Louis Peens <louis.peens@corigine.com>
>
> Reviewed-by: Philippe Schenker <philippe.schenker@toradex.com>
>

For the documentation part,
Acked-by: Dwaipayan Ray <dwaipayanray1@gmail.com>

Thanks.

> > ---
> > * Changes since v5
> > - Add support for --fix option for checkpatch.pl.
> >
> > * Changes since v4
> > - Extend test to cover lines with whitespace before the fixes: tag,
> > e.g.
> >   match check on /^\s*fixes:?/i.
> >
> > * Changes since v3
> > - Add test that title in tag match title of commit referenced by sha1.
> >
> > * Changes since v2
> > - Change the pattern to match on 'fixes:?' to catch more malformed
> >   tags.
> >
> > * Changes since v1
> > - Update the documentation wording and add mention one cause of the
> >   message can be that email program splits the tag over multiple
> > lines.
> > ---
> >  Documentation/dev-tools/checkpatch.rst |  8 +++++
> >  scripts/checkpatch.pl                  | 43
> > ++++++++++++++++++++++++++
> >  2 files changed, 51 insertions(+)
> >
> > diff --git a/Documentation/dev-tools/checkpatch.rst
> > b/Documentation/dev-tools/checkpatch.rst
> > index b52452bc2963..8c8456a3bd18 100644
> > --- a/Documentation/dev-tools/checkpatch.rst
> > +++ b/Documentation/dev-tools/checkpatch.rst
> > @@ -612,6 +612,14 @@ Commit message
> >
> >      See:
> > https://www.kernel.org/doc/html/latest/process/submitting-patches.html#describe-your-changes
> >
> > +  **BAD_FIXES_TAG**
> > +    The Fixes: tag is malformed or does not fall in line with the
> > standards
> > +    specified by the community. This can occur if the tag have been
> > split into
> > +    multiple lines (e.g., when pasted in email program with word
> > wrapping
> > +    enabled).
> > +
> > +    See:
> > https://www.kernel.org/doc/html/latest/process/submitting-patches.html#describe-your-changes
> > +
> >
> >  Comparison style
> >  ----------------
> > diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> > index 79e759aac543..77f577535fc3 100755
> > --- a/scripts/checkpatch.pl
> > +++ b/scripts/checkpatch.pl
> > @@ -3140,6 +3140,49 @@ sub process {
> >                         }
> >                 }
> >
> > +# Check Fixes: styles is correct
> > +               if (!$in_header_lines && $line =~ /^\s*fixes:?/i) {
> > +                       my $orig_commit = "";
> > +                       my $id = "0123456789ab";
> > +                       my $title = "commit title";
> > +                       my $tag_case = 1;
> > +                       my $tag_space = 1;
> > +                       my $id_length = 1;
> > +                       my $id_case = 1;
> > +                       my $title_has_quotes = 0;
> > +
> > +                       if ($line =~ /(\s*fixes:?)\s+([0-9a-
> > f]{5,})\s+($balanced_parens)/i) {
> > +                               my $tag = $1;
> > +                               $orig_commit = $2;
> > +                               $title = $3;
> > +
> > +                               $tag_case = 0 if $tag eq "Fixes:";
> > +                               $tag_space = 0 if ($line =~ /^fixes:?
> > [0-9a-f]{5,} ($balanced_parens)/i);
> > +
> > +                               $id_length = 0 if ($orig_commit =~
> > /^[0-9a-f]{12}$/i);
> > +                               $id_case = 0 if ($orig_commit !~ /[A-
> > F]/);
> > +
> > +                               # Always strip leading/trailing parens
> > then double quotes if existing
> > +                               $title = substr($title, 1, -1);
> > +                               if ($title =~ /^".*"$/) {
> > +                                       $title = substr($title, 1, -
> > 1);
> > +                                       $title_has_quotes = 1;
> > +                               }
> > +                       }
> > +
> > +                       my ($cid, $ctitle) =
> > git_commit_info($orig_commit, $id,
> > +                                                            $title);
> > +
> > +                       if ($ctitle ne $title || $tag_case ||
> > $tag_space ||
> > +                           $id_length || $id_case ||
> > !$title_has_quotes) {
> > +                               if (WARN("BAD_FIXES_TAG",
> > +                                    "Please use correct Fixes: style
> > 'Fixes: <12 chars of sha1> (\"<title line>\")' - ie: 'Fixes: $cid
> > (\"$ctitle\")'\n" . $herecurr) &&
> > +                                   $fix) {
> > +                                       $fixed[$fixlinenr] = "Fixes:
> > $cid (\"$ctitle\")";
> > +                               }
> > +                       }
> > +               }
> > +
> >  # Check email subject for common tools that don't need to be
> > mentioned
> >                 if ($in_header_lines &&
> >                     $line =~
> > /^Subject:.*\b(?:checkpatch|sparse|smatch)\b[^:]/i) {
>
Re: [PATCH v6] checkpatch: warn for non-standard fixes tag style
Posted by Lukas Bulwahn 3 years, 6 months ago
On Sat, Sep 10, 2022 at 10:38 AM Niklas Söderlund
<niklas.soderlund@corigine.com> wrote:
>
> Add a warning for fixes tags that does not fall in line with the
> standards specified by the community.
>
> Signed-off-by: Niklas Söderlund <niklas.soderlund@corigine.com>
> Reviewed-by: Simon Horman <simon.horman@corigine.com>
> Reviewed-by: Louis Peens <louis.peens@corigine.com>
> ---
> * Changes since v5
> - Add support for --fix option for checkpatch.pl.
>
> * Changes since v4
> - Extend test to cover lines with whitespace before the fixes: tag, e.g.
>   match check on /^\s*fixes:?/i.
>
> * Changes since v3
> - Add test that title in tag match title of commit referenced by sha1.
>
> * Changes since v2
> - Change the pattern to match on 'fixes:?' to catch more malformed
>   tags.
>
> * Changes since v1
> - Update the documentation wording and add mention one cause of the
>   message can be that email program splits the tag over multiple lines.
> ---
>  Documentation/dev-tools/checkpatch.rst |  8 +++++
>  scripts/checkpatch.pl                  | 43 ++++++++++++++++++++++++++
>  2 files changed, 51 insertions(+)
>
> diff --git a/Documentation/dev-tools/checkpatch.rst b/Documentation/dev-tools/checkpatch.rst
> index b52452bc2963..8c8456a3bd18 100644
> --- a/Documentation/dev-tools/checkpatch.rst
> +++ b/Documentation/dev-tools/checkpatch.rst
> @@ -612,6 +612,14 @@ Commit message
>
>      See: https://www.kernel.org/doc/html/latest/process/submitting-patches.html#describe-your-changes
>
> +  **BAD_FIXES_TAG**
> +    The Fixes: tag is malformed or does not fall in line with the standards
> +    specified by the community. This can occur if the tag have been split into
> +    multiple lines (e.g., when pasted in email program with word wrapping
> +    enabled).
> +
> +    See: https://www.kernel.org/doc/html/latest/process/submitting-patches.html#describe-your-changes
> +

Thanks for all the work on checkpatch here!

Just three nits:

does not fall in line with ~~> how about "is not aligned with" or
"does not follow"?

"specified" and "standards" is a "big" word. Let us be more brief and
avoid "specification" and "standard".

"standards specified by the community" ~> "community standards", maybe
even "community conventions"?

"when pasted in email program" ~> "when pasted in an email program"

Maybe you also add a sentence on word wrapping of Fixes: tags, such as:

Note that the Fixes: tag line shall not be wrapped.

Nevertheless, for the documentation part:
Reviewed-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Acked-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>

Lukas

>
>  Comparison style
>  ----------------
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 79e759aac543..77f577535fc3 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -3140,6 +3140,49 @@ sub process {
>                         }
>                 }
>
> +# Check Fixes: styles is correct
> +               if (!$in_header_lines && $line =~ /^\s*fixes:?/i) {
> +                       my $orig_commit = "";
> +                       my $id = "0123456789ab";
> +                       my $title = "commit title";
> +                       my $tag_case = 1;
> +                       my $tag_space = 1;
> +                       my $id_length = 1;
> +                       my $id_case = 1;
> +                       my $title_has_quotes = 0;
> +
> +                       if ($line =~ /(\s*fixes:?)\s+([0-9a-f]{5,})\s+($balanced_parens)/i) {
> +                               my $tag = $1;
> +                               $orig_commit = $2;
> +                               $title = $3;
> +
> +                               $tag_case = 0 if $tag eq "Fixes:";
> +                               $tag_space = 0 if ($line =~ /^fixes:? [0-9a-f]{5,} ($balanced_parens)/i);
> +
> +                               $id_length = 0 if ($orig_commit =~ /^[0-9a-f]{12}$/i);
> +                               $id_case = 0 if ($orig_commit !~ /[A-F]/);
> +
> +                               # Always strip leading/trailing parens then double quotes if existing
> +                               $title = substr($title, 1, -1);
> +                               if ($title =~ /^".*"$/) {
> +                                       $title = substr($title, 1, -1);
> +                                       $title_has_quotes = 1;
> +                               }
> +                       }
> +
> +                       my ($cid, $ctitle) = git_commit_info($orig_commit, $id,
> +                                                            $title);
> +
> +                       if ($ctitle ne $title || $tag_case || $tag_space ||
> +                           $id_length || $id_case || !$title_has_quotes) {
> +                               if (WARN("BAD_FIXES_TAG",
> +                                    "Please use correct Fixes: style 'Fixes: <12 chars of sha1> (\"<title line>\")' - ie: 'Fixes: $cid (\"$ctitle\")'\n" . $herecurr) &&
> +                                   $fix) {
> +                                       $fixed[$fixlinenr] = "Fixes: $cid (\"$ctitle\")";
> +                               }
> +                       }
> +               }
> +
>  # Check email subject for common tools that don't need to be mentioned
>                 if ($in_header_lines &&
>                     $line =~ /^Subject:.*\b(?:checkpatch|sparse|smatch)\b[^:]/i) {
> --
> 2.37.3
>