[PATCH 09/14] perf tools: Use kmod_path__parse in decompress_kmodule

[Jiri Olsa <jolsa@kernel.org>]

Replacing the file name parsing with kmod_path__parse.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
---
 tools/perf/util/symbol-elf.c | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index ada16762fac2..8dd530ce20c5 100644
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -579,32 +579,41 @@ static int dso__swap_init(struct dso *dso, unsigned char eidata)
 static int decompress_kmodule(struct dso *dso, const char *name,
 			      enum dso_binary_type type)
 {
-	int fd;
-	const char *ext = strrchr(name, '.');
+	int fd = -1, try = 2;
 	char tmpbuf[] = "/tmp/perf-kmod-XXXXXX";
+	struct kmod_path m;
 
 	if (type != DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP &&
 	    type != DSO_BINARY_TYPE__GUEST_KMODULE_COMP &&
 	    type != DSO_BINARY_TYPE__BUILD_ID_CACHE)
 		return -1;
 
-	if (!ext || !is_supported_compression(ext + 1)) {
-		ext = strrchr(dso->name, '.');
-		if (!ext || !is_supported_compression(ext + 1))
-			return -1;
+again:
+	if (kmod_path__parse_ext(&m, name))
+		return -1;
+
+	if (!m.comp) {
+		if (!--try)
+			goto out;
+
+		free(m.ext);
+		name = dso->name;
+		goto again;
 	}
 
 	fd = mkstemp(tmpbuf);
 	if (fd < 0)
-		return -1;
+		goto out;
 
-	if (!decompress_to_file(ext + 1, name, fd)) {
+	if (!decompress_to_file(m.ext, name, fd)) {
 		close(fd);
 		fd = -1;
 	}
 
 	unlink(tmpbuf);
 
+out:
+	free(m.ext);
 	return fd;
 }
 
-- 
1.9.3