coredump: add zstandard support for coredumps

[thirdparty/systemd.git] / src / journal / compress.h

diff --git a/src/journal/compress.h b/src/journal/compress.h
index c138099d9a84dee4f15f1777a925e2266054fab1..74ef592f4374d8e74385af34d119f3fa657e0eba 100644 (file)
--- a/src/journal/compress.h
+++ b/src/journal/compress.h
@@ -1,24 +1,6 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
 #pragma once
 
-/***
-  This file is part of systemd.
-
-  Copyright 2011 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
 #include <unistd.h>
 
 #include "journal-def.h"
@@ -34,7 +16,7 @@ int compress_blob_lz4(const void *src, uint64_t src_size,
 static inline int compress_blob(const void *src, uint64_t src_size,
                                 void *dst, size_t dst_alloc_size, size_t *dst_size) {
         int r;
-#ifdef HAVE_LZ4
+#if HAVE_LZ4
         r = compress_blob_lz4(src, src_size, dst, dst_alloc_size, dst_size);
         if (r == 0)
                 return OBJECT_COMPRESSED_LZ4;
@@ -70,11 +52,16 @@ int decompress_startswith(int compression,
 
 int compress_stream_xz(int fdf, int fdt, uint64_t max_bytes);
 int compress_stream_lz4(int fdf, int fdt, uint64_t max_bytes);
+int compress_stream_zstd(int fdf, int fdt, uint64_t max_bytes);
 
 int decompress_stream_xz(int fdf, int fdt, uint64_t max_size);
 int decompress_stream_lz4(int fdf, int fdt, uint64_t max_size);
+int decompress_stream_zstd(int fdf, int fdt, uint64_t max_size);
 
-#ifdef HAVE_LZ4
+#if HAVE_ZSTD
+#  define compress_stream compress_stream_zstd
+#  define COMPRESSED_EXT ".zst"
+#elif HAVE_LZ4
 #  define compress_stream compress_stream_lz4
 #  define COMPRESSED_EXT ".lz4"
 #else