From: Michael Tremer <michael.tremer@ipfire.org>
Date: Sat, 8 Feb 2025 15:54:52 +0000 (+0000)
Subject: archive writer: Use gzip compression for OCI images
X-Git-Tag: 0.9.30~62
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e40a74a93a41d7cf48ccd9334bf259a2bb7f01a1;p=pakfire.git

archive writer: Use gzip compression for OCI images

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/pakfire/archive_writer.c b/src/pakfire/archive_writer.c
index a8635a80..4b5d4f51 100644
--- a/src/pakfire/archive_writer.c
+++ b/src/pakfire/archive_writer.c
@@ -59,6 +59,7 @@ struct pakfire_archive_writer {
 	// Compression
 	enum pakfire_archive_writer_compression {
 		PAKFIRE_COMPRESSION_NONE = 0,
+		PAKFIRE_COMPRESSION_GZIP,
 		PAKFIRE_COMPRESSION_ZSTD,
 	} compression;
 	unsigned int compression_level;
@@ -114,11 +115,11 @@ static int pakfire_archive_writer_setup_format(
 			// Use the GNU tar format
 			self->container = PAKFIRE_CONTAINER_GNU;
 
-			// We use Zstandard compression
-			self->compression = PAKFIRE_COMPRESSION_ZSTD;
+			// We use gzip compression
+			self->compression = PAKFIRE_COMPRESSION_GZIP;
 
 			// Use some good compression
-			self->compression_level = 20;
+			self->compression_level = 9;
 			break;
 
 		// Fail on invalid inputs
@@ -177,6 +178,16 @@ static int pakfire_archive_writer_setup_archive(struct pakfire_archive_writer* s
 		case PAKFIRE_COMPRESSION_NONE:
 			break;
 
+		// gzip
+		case PAKFIRE_COMPRESSION_GZIP:
+			r = archive_write_add_filter_gzip(self->archive);
+			if (r) {
+				ERROR(self->ctx, "Could not enable gzip compression: %s\n",
+					archive_error_string(self->archive));
+				return -ENOTSUP;
+			}
+			break;
+
 		// Zstandard
 		case PAKFIRE_COMPRESSION_ZSTD:
 			r = archive_write_add_filter_zstd(self->archive);