sd-network: rename "index" parameter to "ifindex"

[elogind.git] / src / journal / compress.h

diff --git a/src/journal/compress.h b/src/journal/compress.h
index f187a6e00c9dce8a044d81c621b1b32fa8eb6172..92621ba5221b47121276a247aa9d76633c2abbfc 100644 (file)
--- a/src/journal/compress.h
+++ b/src/journal/compress.h
@@ -1,7 +1,6 @@
 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
 
-#ifndef foocompresshfoo
-#define foocompresshfoo
+#pragma once
 
 /***
   This file is part of systemd.
@@ -9,30 +8,79 @@
   Copyright 2011 Lennart Poettering
 
   systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU General Public License as published by
-  the Free Software Foundation; either version 2 of the License, or
+  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
-  General Public License for more details.
+  Lesser General Public License for more details.
 
-  You should have received a copy of the GNU General Public License
+  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 <inttypes.h>
 #include <stdbool.h>
+#include <unistd.h>
 
-bool compress_blob(const void *src, uint64_t src_size, void *dst, uint64_t *dst_size);
+#include "journal-def.h"
 
-bool uncompress_blob(const void *src, uint64_t src_size,
-                     void **dst, uint64_t *dst_alloc_size, uint64_t* dst_size);
+const char* object_compressed_to_string(int compression);
+int object_compressed_from_string(const char *compression);
 
-bool uncompress_startswith(const void *src, uint64_t src_size,
-                           void **buffer, uint64_t *buffer_size,
-                           const void *prefix, uint64_t prefix_len,
-                           uint8_t extra);
+int compress_blob_xz(const void *src, uint64_t src_size, void *dst, uint64_t *dst_size);
+int compress_blob_lz4(const void *src, uint64_t src_size, void *dst, uint64_t *dst_size);
 
+static inline int compress_blob(const void *src, uint64_t src_size, void *dst, uint64_t *dst_size) {
+        int r;
+#ifdef HAVE_LZ4
+        r = compress_blob_lz4(src, src_size, dst, dst_size);
+        if (r == 0)
+                return OBJECT_COMPRESSED_LZ4;
+#else
+        r = compress_blob_xz(src, src_size, dst, dst_size);
+        if (r == 0)
+                return OBJECT_COMPRESSED_XZ;
 #endif
+        return r;
+}
+
+int decompress_blob_xz(const void *src, uint64_t src_size,
+                       void **dst, uint64_t *dst_alloc_size, uint64_t* dst_size, uint64_t dst_max);
+int decompress_blob_lz4(const void *src, uint64_t src_size,
+                        void **dst, uint64_t *dst_alloc_size, uint64_t* dst_size, uint64_t dst_max);
+int decompress_blob(int compression,
+                    const void *src, uint64_t src_size,
+                    void **dst, uint64_t *dst_alloc_size, uint64_t* dst_size, uint64_t dst_max);
+
+int decompress_startswith_xz(const void *src, uint64_t src_size,
+                             void **buffer, uint64_t *buffer_size,
+                             const void *prefix, uint64_t prefix_len,
+                             uint8_t extra);
+int decompress_startswith_lz4(const void *src, uint64_t src_size,
+                              void **buffer, uint64_t *buffer_size,
+                              const void *prefix, uint64_t prefix_len,
+                              uint8_t extra);
+int decompress_startswith(int compression,
+                          const void *src, uint64_t src_size,
+                          void **buffer, uint64_t *buffer_size,
+                          const void *prefix, uint64_t prefix_len,
+                          uint8_t extra);
+
+int compress_stream_xz(int fdf, int fdt, off_t max_bytes);
+int compress_stream_lz4(int fdf, int fdt, off_t max_bytes);
+
+int decompress_stream_xz(int fdf, int fdt, off_t max_size);
+int decompress_stream_lz4(int fdf, int fdt, off_t max_size);
+
+#ifdef HAVE_LZ4
+#  define compress_stream compress_stream_lz4
+#  define COMPRESSED_EXT ".lz4"
+#else
+#  define compress_stream compress_stream_xz
+#  define COMPRESSED_EXT ".xz"
+#endif
+
+int decompress_stream(const char *filename, int fdf, int fdt, off_t max_bytes);