Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef PERF_COMPRESS_H
3#define PERF_COMPRESS_H
4
5#include <stdbool.h>
6#include <stddef.h>
7#include <stdio.h>
8#include <sys/types.h>
9#include <linux/compiler.h>
10#ifdef HAVE_ZSTD_SUPPORT
11#include <zstd.h>
12#endif
13
14#ifdef HAVE_ZLIB_SUPPORT
15int gzip_decompress_to_file(const char *input, int output_fd);
16bool gzip_is_compressed(const char *input);
17#endif
18
19#ifdef HAVE_LZMA_SUPPORT
20int lzma_decompress_stream_to_file(FILE *input, int output_fd);
21int lzma_decompress_to_file(const char *input, int output_fd);
22bool lzma_is_compressed(const char *input);
23#else
24static inline
25int lzma_decompress_stream_to_file(FILE *input __maybe_unused,
26 int output_fd __maybe_unused)
27{
28 return -1;
29}
30static inline
31int lzma_decompress_to_file(const char *input __maybe_unused,
32 int output_fd __maybe_unused)
33{
34 return -1;
35}
36static inline int lzma_is_compressed(const char *input __maybe_unused)
37{
38 return false;
39}
40#endif
41
42struct zstd_data {
43#ifdef HAVE_ZSTD_SUPPORT
44 ZSTD_CStream *cstream;
45 ZSTD_DStream *dstream;
46 int comp_level;
47#endif
48};
49
50#ifdef HAVE_ZSTD_SUPPORT
51
52int zstd_init(struct zstd_data *data, int level);
53int zstd_fini(struct zstd_data *data);
54
55ssize_t zstd_compress_stream_to_records(struct zstd_data *data, void *dst, size_t dst_size,
56 void *src, size_t src_size, size_t max_record_size,
57 size_t process_header(void *record, size_t increment));
58
59size_t zstd_decompress_stream(struct zstd_data *data, void *src, size_t src_size,
60 void *dst, size_t dst_size);
61#else /* !HAVE_ZSTD_SUPPORT */
62
63static inline int zstd_init(struct zstd_data *data __maybe_unused, int level __maybe_unused)
64{
65 return 0;
66}
67
68static inline int zstd_fini(struct zstd_data *data __maybe_unused)
69{
70 return 0;
71}
72
73static inline
74ssize_t zstd_compress_stream_to_records(struct zstd_data *data __maybe_unused,
75 void *dst __maybe_unused, size_t dst_size __maybe_unused,
76 void *src __maybe_unused, size_t src_size __maybe_unused,
77 size_t max_record_size __maybe_unused,
78 size_t process_header(void *record, size_t increment) __maybe_unused)
79{
80 return 0;
81}
82
83static inline size_t zstd_decompress_stream(struct zstd_data *data __maybe_unused, void *src __maybe_unused,
84 size_t src_size __maybe_unused, void *dst __maybe_unused,
85 size_t dst_size __maybe_unused)
86{
87 return 0;
88}
89#endif
90
91#endif /* PERF_COMPRESS_H */