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get_maintainer: add ** glob pattern support

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Add support for the ** glob operator in MAINTAINERS F: and X: patterns,
matching any number of path components (like Python's ** glob).

The existing * to .* conversion with slash-count check is preserved.  **
is converted to (?:.*), a non-capturing group used as a marker to bypass
the slash-count check in file_match_pattern(), allowing the pattern to
cross directory boundaries.

This enables patterns like F: **/*[_-]kunit*.c to match files at any depth
in the tree.

Link: https://lkml.kernel.org/r/20260302103822.77343-1-teknoraver@meta.com
Signed-off-by: Matteo Croce <teknoraver@meta.com>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matteo Croce
2026-03-02 11:38:22 +01:00
committed by Andrew Morton
parent defec2ca7c
commit 420849332f
2 changed files with 8 additions and 2 deletions
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1
MAINTAINERS
View File

@@ -35,6 +35,7 @@ Descriptions of section entries and preferred order
F: drivers/net/ all files in and below drivers/net
F: drivers/net/* all files in drivers/net, but not below
F: */net/* all files in "any top level directory"/net
F: fs/**/*foo*.c all *foo*.c files in any subdirectory of fs
One pattern per line. Multiple F: lines acceptable.
X: *Excluded* files and directories that are NOT maintained, same
rules as F:. Files exclusions are tested before file matches.

9
scripts/get_maintainer.pl
View File

@@ -375,8 +375,10 @@ sub read_maintainer_file {
##Filename pattern matching
if ($type eq "F" || $type eq "X") {
$value =~ s@\.@\\\.@g; ##Convert . to \.
$value =~ s/\*\*/\x00/g; ##Convert ** to placeholder
$value =~ s/\*/\.\*/g; ##Convert * to .*
$value =~ s/\?/\./g; ##Convert ? to .
$value =~ s/\x00/(?:.*)/g; ##Convert placeholder to (?:.*)
##if pattern is a directory and it lacks a trailing slash, add one
if ((-d $value)) {
$value =~ s@([^/])$@$1/@;
@@ -746,8 +748,10 @@ sub self_test {
if (($type eq "F" || $type eq "X") &&
($self_test eq "" || $self_test =~ /\bpatterns\b/)) {
$value =~ s@\.@\\\.@g; ##Convert . to \.
$value =~ s/\*\*/\x00/g; ##Convert ** to placeholder
$value =~ s/\*/\.\*/g; ##Convert * to .*
$value =~ s/\?/\./g; ##Convert ? to .
$value =~ s/\x00/(?:.*)/g; ##Convert placeholder to (?:.*)
##if pattern is a directory and it lacks a trailing slash, add one
if ((-d $value)) {
$value =~ s@([^/])$@$1/@;
@@ -921,7 +925,7 @@ sub get_maintainers {
my $value_pd = ($value =~ tr@/@@);
my $file_pd = ($file =~ tr@/@@);
$value_pd++ if (substr($value,-1,1) ne "/");
$value_pd = -1 if ($value =~ /^\.\*/);
$value_pd = -1 if ($value =~ /^(\.\*|\(\?:\.\*\))/);
if ($value_pd >= $file_pd &&
range_is_maintained($start, $end) &&
range_has_maintainer($start, $end)) {
@@ -955,6 +959,7 @@ sub get_maintainers {
$line =~ s/([^\\])\.([^\*])/$1\?$2/g;
$line =~ s/([^\\])\.$/$1\?/g; ##Convert . back to ?
$line =~ s/\\\./\./g; ##Convert \. to .
$line =~ s/\(\?:\.\*\)/\*\*/g; ##Convert (?:.*) to **
$line =~ s/\.\*/\*/g; ##Convert .* to *
}
my $count = $line =~ s/^([A-Z]):/$1:\t/g;
@@ -1048,7 +1053,7 @@ sub file_match_pattern {
if ($file =~ m@^$pattern@) {
my $s1 = ($file =~ tr@/@@);
my $s2 = ($pattern =~ tr@/@@);
if ($s1 == $s2) {
if ($s1 == $s2 || $pattern =~ /\(\?:/) {
return 1;
}
}