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-rw-r--r--src/journal/compress.h65
1 files changed, 56 insertions, 9 deletions
diff --git a/src/journal/compress.h b/src/journal/compress.h
index f25fe86abd..92621ba522 100644
--- a/src/journal/compress.h
+++ b/src/journal/compress.h
@@ -25,15 +25,62 @@
#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, uint64_t dst_max);
+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);
-int compress_stream(int fdf, int fdt, uint32_t preset, off_t max_size);
-int decompress_stream(int fdf, int fdt, off_t max_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);