From: "Steven Rostedt (Google)" <rostedt@xxxxxxxxxxx>
The tracefs_tracer_set() does a ret = write() to write the tracer name
into the current_tracer file, but then it returns the ret as well. "write"
returns the number of bytes written, but tracefs_tracer_set() is suppose
to return 0 on success.
Have it return 0 instead of the number of bytes written on success.
Fixes: df130d4915b15 ("libtracefs: Add support for setting tracers")
Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
---
src/tracefs-tools.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/tracefs-tools.c b/src/tracefs-tools.c
index 489be28a3b94..8e7b46db86e9 100644
--- a/src/tracefs-tools.c
+++ b/src/tracefs-tools.c
@@ -1055,7 +1055,7 @@ int tracefs_tracer_set(struct tracefs_instance *instance,
out:
tracefs_put_tracing_file(tracer_path);
close(fd);
- return ret;
+ return ret > 0 ? 0 : ret;
}
int tracefs_tracer_clear(struct tracefs_instance *instance)
--
2.35.1
|