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71fa411fe8
Internally lzma_decompress_to_file() creates a FILE from the filename. Add an API that takes an existing FILE directly. This allows decompressing already-open files and even buffers opened by fmemopen(). It is necessary for supporting .gnu_debugdata in the next patch. Signed-off-by: Stephen Brennan <stephen.s.brennan@oracle.com> Reviewed-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Link: https://lore.kernel.org/r/20250307232206.2102440-3-stephen.s.brennan@oracle.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef PERF_COMPRESS_H
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#define PERF_COMPRESS_H
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <linux/compiler.h>
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#ifdef HAVE_ZSTD_SUPPORT
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#include <zstd.h>
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#endif
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#ifdef HAVE_ZLIB_SUPPORT
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int gzip_decompress_to_file(const char *input, int output_fd);
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bool gzip_is_compressed(const char *input);
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#endif
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#ifdef HAVE_LZMA_SUPPORT
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int lzma_decompress_stream_to_file(FILE *input, int output_fd);
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int lzma_decompress_to_file(const char *input, int output_fd);
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bool lzma_is_compressed(const char *input);
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#else
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static inline
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int lzma_decompress_stream_to_file(FILE *input __maybe_unused,
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int output_fd __maybe_unused)
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{
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return -1;
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}
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static inline
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int lzma_decompress_to_file(const char *input __maybe_unused,
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int output_fd __maybe_unused)
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{
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return -1;
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}
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static inline int lzma_is_compressed(const char *input __maybe_unused)
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{
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return false;
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}
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#endif
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struct zstd_data {
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#ifdef HAVE_ZSTD_SUPPORT
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ZSTD_CStream *cstream;
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ZSTD_DStream *dstream;
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int comp_level;
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#endif
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};
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#ifdef HAVE_ZSTD_SUPPORT
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int zstd_init(struct zstd_data *data, int level);
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int zstd_fini(struct zstd_data *data);
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ssize_t zstd_compress_stream_to_records(struct zstd_data *data, void *dst, size_t dst_size,
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void *src, size_t src_size, size_t max_record_size,
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size_t process_header(void *record, size_t increment));
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size_t zstd_decompress_stream(struct zstd_data *data, void *src, size_t src_size,
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void *dst, size_t dst_size);
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#else /* !HAVE_ZSTD_SUPPORT */
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static inline int zstd_init(struct zstd_data *data __maybe_unused, int level __maybe_unused)
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{
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return 0;
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}
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static inline int zstd_fini(struct zstd_data *data __maybe_unused)
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{
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return 0;
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}
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static inline
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ssize_t zstd_compress_stream_to_records(struct zstd_data *data __maybe_unused,
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void *dst __maybe_unused, size_t dst_size __maybe_unused,
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void *src __maybe_unused, size_t src_size __maybe_unused,
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size_t max_record_size __maybe_unused,
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size_t process_header(void *record, size_t increment) __maybe_unused)
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{
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return 0;
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}
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static inline size_t zstd_decompress_stream(struct zstd_data *data __maybe_unused, void *src __maybe_unused,
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size_t src_size __maybe_unused, void *dst __maybe_unused,
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size_t dst_size __maybe_unused)
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{
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return 0;
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}
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#endif
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#endif /* PERF_COMPRESS_H */
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