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checkpatch: add a --strict check for utf-8 in commit logs 

Some find using utf-8 in commit logs inappropriate.

Some patch commit logs contain unintended utf-8 characters when doing
things like copy/pasting compilation output.

Look for the start of any commit log by skipping initial lines that look
like email headers and "From: " lines.

Stop looking for utf-8 at the first signature line.

Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Message-id: 20180430124651.10340-2-stefanha@redhat.com
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 15662b3e8644905032c2e26808401a487d4e90c1)
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Conflicts:
  QEMU does not have CHK(), use WARN() instead.

  QEMU WARN() only takes one argument, drop the 'type' value in the
  first argument.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Joe Perches 2018-04-30 13:46:47 +01:00 committed by Stefan Hajnoczi
parent 23d702d898
commit b37c4aacf7
1 changed files with 26 additions and 4 deletions
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30
scripts/checkpatch.pl
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@ -224,9 +224,8 @@ our $NonptrType;
our $Type;
our $Declare;
our $UTF8 = qr {
[\x09\x0A\x0D\x20-\x7E] # ASCII
| [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
our $NON_ASCII_UTF8 = qr{
[\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
| \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs
| [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte
| \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates
@ -235,6 +234,11 @@ our $UTF8 = qr {
| \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
}x;
our $UTF8 = qr{
[\x09\x0A\x0D\x20-\x7E] # ASCII
| $NON_ASCII_UTF8
}x;
# There are still some false positives, but this catches most
# common cases.
our $typeTypedefs = qr{(?x:
@ -1179,6 +1183,9 @@ sub process {
my $signoff = 0;
my $is_patch = 0;
my $in_header_lines = 1;
my $in_commit_log = 0; #Scanning lines before patch
our @report = ();
our $cnt_lines = 0;
our $cnt_error = 0;
@ -1331,7 +1338,6 @@ sub process {
if ($line =~ /^diff --git.*?(\S+)$/) {
$realfile = $1;
$realfile =~ s@^([^/]*)/@@;
} elsif ($line =~ /^\+\+\+\s+(\S+)/) {
$realfile = $1;
$realfile =~ s@^([^/]*)/@@;
@ -1370,6 +1376,8 @@ sub process {
if ($line =~ /^\s*signed-off-by:/i) {
# This is a signoff, if ugly, so do not double report.
$signoff++;
$in_commit_log = 0;
if (!($line =~ /^\s*Signed-off-by:/)) {
ERROR("The correct form is \"Signed-off-by\"\n" .
$herecurr);
@ -1398,6 +1406,20 @@ sub process {
ERROR("Invalid UTF-8, patch and commit message should be encoded in UTF-8\n" . $hereptr);
}
# Check if it's the start of a commit log
# (not a header line and we haven't seen the patch filename)
if ($in_header_lines && $realfile =~ /^$/ &&
$rawline !~ /^(commit\b|from\b|\w+:).+$/i) {
$in_header_lines = 0;
$in_commit_log = 1;
}
# Still not yet in a patch, check for any UTF-8
if ($in_commit_log && $realfile =~ /^$/ &&
$rawline =~ /$NON_ASCII_UTF8/) {
WARN("8-bit UTF-8 used in possible commit log\n" . $herecurr);
}
# ignore non-hunk lines and lines being removed
next if (!$hunk_line || $line =~ /^-/);