linux-kernel - [PATCH] get_maintainer.pl: support running from non-top-level dir

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Message-Id: <20210913233435.24585-1-pcc@google.com>
Date:   Mon, 13 Sep 2021 16:34:35 -0700
From:   Peter Collingbourne <pcc@...gle.com>
To:     Joe Perches <joe@...ches.com>
Cc:     Peter Collingbourne <pcc@...gle.com>, linux-kernel@...r.kernel.org
Subject: [PATCH] get_maintainer.pl: support running from non-top-level dir

My workflow usually involves running scripts from a subdirectory of the
kernel source tree. This fails with get_maintainer.pl because it assumes
that it runs from the top level. Fix this assumption by setting $lk_path
appropriately based on a check of $0 similar to what is in checkpatch.pl.

This also requires fixing the VCS available checks to also check $lk_path.

Signed-off-by: Peter Collingbourne <pcc@...gle.com>
Link: https://linux-review.googlesource.com/id/I1ceda4106b3f90d8608fc7911079d2eda1c1a0c6
---
 scripts/get_maintainer.pl | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index 2075db0c08b8..47474cb85ea7 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -114,7 +114,7 @@ my %VCS_cmds;
 
 my %VCS_cmds_git = (
     "execute_cmd" => \&git_execute_cmd,
-    "available" => '(which("git") ne "") && (-e ".git")',
+    "available" => '(which("git") ne "") && (-e "${lk_path}.git")',
     "find_signers_cmd" =>
 	"git log --no-color --follow --since=\$email_git_since " .
 	    '--numstat --no-merges ' .
@@ -154,7 +154,7 @@ my %VCS_cmds_git = (
 
 my %VCS_cmds_hg = (
     "execute_cmd" => \&hg_execute_cmd,
-    "available" => '(which("hg") ne "") && (-d ".hg")',
+    "available" => '(which("hg") ne "") && (-d "${lk_path}.hg")',
     "find_signers_cmd" =>
 	"hg log --date=\$email_hg_since " .
 	    "--template='HgCommit: {node}\\n" .
@@ -333,6 +333,10 @@ if ($email &&
     die "$P: Please select at least 1 email option\n";
 }
 
+if ($0 =~ m@(.*)/scripts/[^/]*$@ && top_of_kernel_tree($1)) {
+    $lk_path = "$1/";
+}
+
 if ($tree && !top_of_kernel_tree($lk_path)) {
     die "$P: The current directory does not appear to be "
 	. "a linux kernel source tree.\n";
-- 
2.33.0.309.g3052b89438-goog