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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
c2f1db8f | 2 | #pragma once |
e4e61fdb LP |
3 | |
4 | /*** | |
5 | This file is part of systemd. | |
6 | ||
7 | Copyright 2011 Lennart Poettering | |
8 | ||
9 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
10 | under the terms of the GNU Lesser General Public License as published by |
11 | the Free Software Foundation; either version 2.1 of the License, or | |
e4e61fdb LP |
12 | (at your option) any later version. |
13 | ||
14 | systemd is distributed in the hope that it will be useful, but | |
15 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 17 | Lesser General Public License for more details. |
e4e61fdb | 18 | |
5430f7f2 | 19 | You should have received a copy of the GNU Lesser General Public License |
e4e61fdb LP |
20 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
21 | ***/ | |
22 | ||
355b59e2 | 23 | #include <unistd.h> |
e4e61fdb | 24 | |
d89c8fdf | 25 | #include "journal-def.h" |
e4e61fdb | 26 | |
d89c8fdf ZJS |
27 | const char* object_compressed_to_string(int compression); |
28 | int object_compressed_from_string(const char *compression); | |
e4e61fdb | 29 | |
5d6f46b6 ZJS |
30 | int compress_blob_xz(const void *src, uint64_t src_size, |
31 | void *dst, size_t dst_alloc_size, size_t *dst_size); | |
32 | int compress_blob_lz4(const void *src, uint64_t src_size, | |
33 | void *dst, size_t dst_alloc_size, size_t *dst_size); | |
355b59e2 | 34 | |
5d6f46b6 ZJS |
35 | static inline int compress_blob(const void *src, uint64_t src_size, |
36 | void *dst, size_t dst_alloc_size, size_t *dst_size) { | |
d89c8fdf | 37 | int r; |
349cc4a5 | 38 | #if HAVE_LZ4 |
5d6f46b6 | 39 | r = compress_blob_lz4(src, src_size, dst, dst_alloc_size, dst_size); |
d89c8fdf ZJS |
40 | if (r == 0) |
41 | return OBJECT_COMPRESSED_LZ4; | |
42 | #else | |
5d6f46b6 | 43 | r = compress_blob_xz(src, src_size, dst, dst_alloc_size, dst_size); |
d89c8fdf ZJS |
44 | if (r == 0) |
45 | return OBJECT_COMPRESSED_XZ; | |
46 | #endif | |
47 | return r; | |
48 | } | |
49 | ||
50 | int decompress_blob_xz(const void *src, uint64_t src_size, | |
fa1c4b51 | 51 | void **dst, size_t *dst_alloc_size, size_t* dst_size, size_t dst_max); |
d89c8fdf | 52 | int decompress_blob_lz4(const void *src, uint64_t src_size, |
fa1c4b51 | 53 | void **dst, size_t *dst_alloc_size, size_t* dst_size, size_t dst_max); |
d89c8fdf ZJS |
54 | int decompress_blob(int compression, |
55 | const void *src, uint64_t src_size, | |
fa1c4b51 | 56 | void **dst, size_t *dst_alloc_size, size_t* dst_size, size_t dst_max); |
d89c8fdf ZJS |
57 | |
58 | int decompress_startswith_xz(const void *src, uint64_t src_size, | |
fa1c4b51 ZJS |
59 | void **buffer, size_t *buffer_size, |
60 | const void *prefix, size_t prefix_len, | |
d89c8fdf ZJS |
61 | uint8_t extra); |
62 | int decompress_startswith_lz4(const void *src, uint64_t src_size, | |
fa1c4b51 ZJS |
63 | void **buffer, size_t *buffer_size, |
64 | const void *prefix, size_t prefix_len, | |
d89c8fdf ZJS |
65 | uint8_t extra); |
66 | int decompress_startswith(int compression, | |
67 | const void *src, uint64_t src_size, | |
fa1c4b51 ZJS |
68 | void **buffer, size_t *buffer_size, |
69 | const void *prefix, size_t prefix_len, | |
d89c8fdf ZJS |
70 | uint8_t extra); |
71 | ||
59f448cf LP |
72 | int compress_stream_xz(int fdf, int fdt, uint64_t max_bytes); |
73 | int compress_stream_lz4(int fdf, int fdt, uint64_t max_bytes); | |
d89c8fdf | 74 | |
59f448cf LP |
75 | int decompress_stream_xz(int fdf, int fdt, uint64_t max_size); |
76 | int decompress_stream_lz4(int fdf, int fdt, uint64_t max_size); | |
d89c8fdf | 77 | |
349cc4a5 | 78 | #if HAVE_LZ4 |
d89c8fdf ZJS |
79 | # define compress_stream compress_stream_lz4 |
80 | # define COMPRESSED_EXT ".lz4" | |
81 | #else | |
82 | # define compress_stream compress_stream_xz | |
83 | # define COMPRESSED_EXT ".xz" | |
84 | #endif | |
85 | ||
59f448cf | 86 | int decompress_stream(const char *filename, int fdf, int fdt, uint64_t max_bytes); |