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8b42b7e5e8
Add is_compressed callback to the compressions array, that returns 0 if the file is compressed or != 0 if not. The new callback is used to recognize the situation when we have a 'compressed' object, like: /lib/modules/.../drivers/net/ethernet/intel/igb/igb.ko.xz but we need to read its debug data from debuginfo files, which might not be compressed, like: /root/.debug/.build-id/d6/...c4b301f/debug So even for a 'compressed' object we read debug data from a plain uncompressed object. To keep this transparent, we detect this in decompress_kmodule() and return the file descriptor to the uncompressed file. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180817094813.15086-11-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
16 lines
397 B
C
16 lines
397 B
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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#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_to_file(const char *input, int output_fd);
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bool lzma_is_compressed(const char *input);
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#endif
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#endif /* PERF_COMPRESS_H */
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