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Commit 88c74dc7 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
Browse files

perf tools: Add gzip_is_compressed function 



Add implementation of the is_compressed callback for gzip.

Signed-off-by: default avatarJiri 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/20180817094813.15086-13-jolsa@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 4b57fd44

tools/perf/util/zlib.c

+14 −2
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ 
#include <sys/mman.h>

#include <zlib.h>

#include <linux/compiler.h>

#include <unistd.h>



#include "util/compress.h"

#include "util/util.h"
@@ -81,7 +82,18 @@ int gzip_decompress_to_file(const char *input, int output_fd) 
	return ret == Z_STREAM_END ? 0 : -1;

}



bool gzip_is_compressed(const char *input __maybe_unused)

bool gzip_is_compressed(const char *input)

{

	return true;

	int fd = open(input, O_RDONLY);

	const uint8_t magic[2] = { 0x1f, 0x8b };

	char buf[2] = { 0 };

	ssize_t rc;



	if (fd < 0)

		return -1;



	rc = read(fd, buf, sizeof(buf));

	close(fd);

	return rc == sizeof(buf) ?

	       memcmp(buf, magic, sizeof(buf)) == 0 : false;

}