/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ #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 <inttypes.h> #include <stdbool.h> #include <unistd.h> #include "journal-def.h" const char* object_compressed_to_string(int compression); int object_compressed_from_string(const char *compression); int compress_blob_xz(const void *src, uint64_t src_size, void *dst, size_t *dst_size); int compress_blob_lz4(const void *src, uint64_t src_size, void *dst, size_t *dst_size); static inline int compress_blob(const void *src, uint64_t src_size, void *dst, size_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, size_t *dst_alloc_size, size_t* dst_size, size_t dst_max); int decompress_blob_lz4(const void *src, uint64_t src_size, void **dst, size_t *dst_alloc_size, size_t* dst_size, size_t dst_max); int decompress_blob(int compression, const void *src, uint64_t src_size, void **dst, size_t *dst_alloc_size, size_t* dst_size, size_t dst_max); int decompress_startswith_xz(const void *src, uint64_t src_size, void **buffer, size_t *buffer_size, const void *prefix, size_t prefix_len, uint8_t extra); int decompress_startswith_lz4(const void *src, uint64_t src_size, void **buffer, size_t *buffer_size, const void *prefix, size_t prefix_len, uint8_t extra); int decompress_startswith(int compression, const void *src, uint64_t src_size, void **buffer, size_t *buffer_size, const void *prefix, size_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);