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Subject[PATCH 19/24] perf tools: Add is_perf_data function
Date
Adding is_perf_data function that returns true if
the given path is perf data file. It will be used
in following patches.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/util/data.c | 19 +++++++++++++++++++
tools/perf/util/data.h | 1 +
2 files changed, 20 insertions(+)

diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c
index c47aa34fdc0a..be049e812f5a 100644
--- a/tools/perf/util/data.c
+++ b/tools/perf/util/data.c
@@ -457,3 +457,22 @@ char *perf_data__kallsyms_name(struct perf_data *data)

return kallsyms_name;
}
+
+bool is_perf_data(const char *path)
+{
+ bool ret = false;
+ FILE *file;
+ u64 magic;
+
+ file = fopen(path, "r");
+ if (!file)
+ return false;
+
+ if (fread(&magic, 1, 8, file) < 8)
+ goto out;
+
+ ret = is_perf_magic(magic);
+out:
+ fclose(file);
+ return ret;
+}
diff --git a/tools/perf/util/data.h b/tools/perf/util/data.h
index 75947ef6bc17..0ebb1568ca86 100644
--- a/tools/perf/util/data.h
+++ b/tools/perf/util/data.h
@@ -89,4 +89,5 @@ int perf_data__update_dir(struct perf_data *data);
unsigned long perf_data__size(struct perf_data *data);
int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz);
char *perf_data__kallsyms_name(struct perf_data *data);
+bool is_perf_data(const char *path);
#endif /* __PERF_DATA_H */
--
2.26.2
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