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Subject[PATCH 4/5] perf data: Add has_kcore_dir()
Date
Add a helper function has_kcore_dir(), so that perf inject can determine if
it needs to keep the kcore_dir.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
tools/perf/util/data.c | 14 ++++++++++++++
tools/perf/util/data.h | 1 +
2 files changed, 15 insertions(+)

diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c
index a5ace2bbc28d..caabeac24c69 100644
--- a/tools/perf/util/data.c
+++ b/tools/perf/util/data.c
@@ -479,6 +479,20 @@ int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz)
return mkdir(buf, S_IRWXU);
}

+bool has_kcore_dir(const char *path)
+{
+ char *kcore_dir;
+ int ret;
+
+ if (asprintf(&kcore_dir, "%s/kcore_dir", path) < 0)
+ return false;
+
+ ret = access(kcore_dir, F_OK);
+
+ free(kcore_dir);
+ return !ret;
+}
+
char *perf_data__kallsyms_name(struct perf_data *data)
{
char *kallsyms_name;
diff --git a/tools/perf/util/data.h b/tools/perf/util/data.h
index 1402d9657ef2..7de53d6e2d7f 100644
--- a/tools/perf/util/data.h
+++ b/tools/perf/util/data.h
@@ -99,6 +99,7 @@ void perf_data__close_dir(struct perf_data *data);
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);
+bool has_kcore_dir(const char *path);
char *perf_data__kallsyms_name(struct perf_data *data);
bool is_perf_data(const char *path);
#endif /* __PERF_DATA_H */
--
2.25.1
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