src/journal/compress.h

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 #pragma once
   4
   5 /***
   6   This file is part of systemd.
   7
   8   Copyright 2011 Lennart Poettering
   9
  10   systemd is free software; you can redistribute it and/or modify it
  11   under the terms of the GNU Lesser General Public License as published by
  12   the Free Software Foundation; either version 2.1 of the License, or
  13   (at your option) any later version.
  14
  15   systemd is distributed in the hope that it will be useful, but
  16   WITHOUT ANY WARRANTY; without even the implied warranty of
  17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18   Lesser General Public License for more details.
  19
  20   You should have received a copy of the GNU Lesser General Public License
  21   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  22 ***/
  23
  24 #include <inttypes.h>
  25 #include <stdbool.h>
  26 #include <unistd.h>
  27
  28 bool compress_blob(const void *src, uint64_t src_size, void *dst, uint64_t *dst_size);
  29
  30 bool uncompress_blob(const void *src, uint64_t src_size,
  31                      void **dst, uint64_t *dst_alloc_size, uint64_t* dst_size, uint64_t dst_max);
  32
  33 bool uncompress_startswith(const void *src, uint64_t src_size,
  34                            void **buffer, uint64_t *buffer_size,
  35                            const void *prefix, uint64_t prefix_len,
  36                            uint8_t extra);
  37
  38 int compress_stream(int fdf, int fdt, uint32_t preset, off_t max_size);
  39 int decompress_stream(int fdf, int fdt, off_t max_size);