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Subject[PATCH] checkpatch: Require author Signed-off-by
Date
Print an error if none of the Signed-off-by lines cover the patch
author.

Non-ASCII quoted printable encoding in From: headers and (lack of)
double quotes are handled.
Split From: headers are not fully handled: only the first part is
compared.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Tested using a set of ca. 4000 real world commits.

Most common offenders are people using:
- different email addresses for author and Sob,
- different firstname/lastname order, or other different name
spelling,
- suse.de vs. suse.com.
---
scripts/checkpatch.pl | 27 ++++++++++++++++++++++++---
1 file changed, 24 insertions(+), 3 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 8d0bad190c25e2e0..53f3dcf9171447f4 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -13,6 +13,7 @@ use POSIX;
use File::Basename;
use Cwd 'abs_path';
use Term::ANSIColor qw(:constants);
+use MIME::Words 'decode_mimewords';

my $P = $0;
my $D = dirname(abs_path($P));
@@ -2236,6 +2237,8 @@ sub process {

our $clean = 1;
my $signoff = 0;
+ my $author = '';
+ my $authorsignoff = 0;
my $is_patch = 0;
my $in_header_lines = $file ? 0 : 1;
my $in_commit_log = 0; #Scanning lines before patch
@@ -2518,10 +2521,23 @@ sub process {
}
}

+# Check the patch for a From:
+ if ($line =~ /^\s*From: (.*)/i) {
+ $author = decode_mimewords($1);
+ $author =~ s/"//g;
+ }
+
# Check the patch for a signoff:
if ($line =~ /^\s*signed-off-by:/i) {
$signoff++;
$in_commit_log = 0;
+ if ($author ne '') {
+ my $l = $line;
+ $l =~ s/"//g;
+ if ($l =~ /^\s*signed-off-by: \Q$author\E/i) {
+ $authorsignoff = 1;
+ }
+ }
}

# Check if MAINTAINERS is being updated. If so, there's probably no need to
@@ -6487,9 +6503,14 @@ sub process {
ERROR("NOT_UNIFIED_DIFF",
"Does not appear to be a unified-diff format patch\n");
}
- if ($is_patch && $has_commit_log && $chk_signoff && $signoff == 0) {
- ERROR("MISSING_SIGN_OFF",
- "Missing Signed-off-by: line(s)\n");
+ if ($is_patch && $has_commit_log && $chk_signoff) {
+ if ($signoff == 0) {
+ ERROR("MISSING_SIGN_OFF",
+ "Missing Signed-off-by: line(s)\n");
+ } elsif (!$authorsignoff) {
+ ERROR("NO_AUTHOR_SIGN_OFF",
+ "Missing Signed-off-by: line by patch author\n");
+ }
}

print report_dump();
--
2.17.1
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