File 0001-Add-support-for-GZIP-and-ZSTD-module-compression.patch of Package pesign-obs-integration.20743

From b23d9018134eb505961917f165f9e39ff4829576 Mon Sep 17 00:00:00 2001
From: Callum Farmer <gmbr3@opensuse.org>
Date: Fri, 4 Jun 2021 20:31:00 +0100
Subject: [PATCH] Add support for GZIP and ZSTD module compression

Written based on https://github.com/torvalds/linux/blob/master/scripts/Makefile.modinst
---
 README                    |  2 +-
 brp-99-pesign             |  4 ++++
 pesign-gen-repackage-spec | 21 +++++++++++++++++----
 3 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/README b/README
index 32afb8f..aaa5da0 100644
--- a/README
+++ b/README
@@ -38,7 +38,7 @@ in debian/rules to use the fully automated helper.
 Consult the dh_signobs manpage for more information.
 
 When BRP_PESIGN_COMPRESS_MODULE is passed, the script tries to compress the
-kernel modules at the repackaging phase. Currently only xz format is supported.
+kernel modules at the repackaging phase. Currently xz, gzip and zstd format is supported.
 For enable the compression feature, put the following along with
 BRP_PESIGN_FILES setup:
 
diff --git a/brp-99-pesign b/brp-99-pesign
index c2492b3..4408f6d 100644
--- a/brp-99-pesign
+++ b/brp-99-pesign
@@ -60,6 +60,10 @@ fi
 
 if test "${BRP_PESIGN_COMPRESS_MODULE}" = "xz"; then
 	pesign_repackage_compress="--compress xz"
+elif test "${BRP_PESIGN_COMPRESS_MODULE}" = "gzip"; then
+	pesign_repackage_compress="--compress gzip"
+elif test "${BRP_PESIGN_COMPRESS_MODULE}" = "zstd"; then
+	pesign_repackage_compress="--compress zstd"
 else
 	pesign_repackage_compress=""
 fi
diff --git a/pesign-gen-repackage-spec b/pesign-gen-repackage-spec
index 8a1fe39..c01fa2d 100755
--- a/pesign-gen-repackage-spec
+++ b/pesign-gen-repackage-spec
@@ -392,7 +392,20 @@ my %verifyflags = (
 sub print_files {
 	my $files = shift;
 	my @tocompress;
-
+	my $compress_ext = "";
+	my $compress_cmd = "";
+	
+	if ($compress eq "xz") {
+		$compress_ext = ".xz";
+		$compress_cmd = "xz --lzma2=dict=2MiB -f";
+	} elsif ($compress eq "gzip") {
+		$compress_ext = ".gz";
+		$compress_cmd = "gzip -n -f";
+	} elsif ($compress eq "zstd") {
+		$compress_ext = ".zst";
+		$compress_cmd = "zstd -T0 --rm -f -q";
+	}
+	
 	for my $f (@$files) {
 		my $path = "$directory/$f->{name}";
 		my $attrs = "";
@@ -444,12 +457,12 @@ sub print_files {
 			$attrs .= "%verify(not $verify_attrs) ";
 		}
 
-		if ($compress eq "xz" &&
+		if ($compress ne "" &&
 		    $f->{name} =~ /\.ko$/ && S_ISREG($f->{mode})) {
 			chmod($f->{mode}, $path);
 			utime($f->{mtime}, $f->{mtime}, $path);
 			push(@tocompress, $path);
-			print SPEC "$attrs " . quote($f->{name}) . ".xz\n";
+			print SPEC "$attrs " . quote($f->{name}) . "$compress_ext\n";
 		} else {
 			print SPEC "$attrs " . quote($f->{name}) . "\n";
 		}
@@ -464,7 +477,7 @@ sub print_files {
 		open(M, '>', $m) or die "$m: $!\n";
 		print M join("\n", @tocompress);
 		close(M);
-		system("xargs -a $m -t -P 4 -n 1 xz -f");
+		system("xargs -a $m -t -P 4 -n 1 $compress_cmd");
 		unlink($m);
 	}
 }
-- 
2.32.0