trace-cmd: Move to output dir specified by -d in listen command

If -d is specified on the command line for 'trace-cmd listen' then
change to that directory to write the data files to.

Reported-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/trace-listen.c b/trace-listen.c
index 9a1981b..419cbd1 100644
--- a/trace-listen.c
+++ b/trace-listen.c
@@ -507,6 +507,9 @@ void trace_listen(int argc, char **argv)
         if (!output_dir)
                 output_dir = default_output_dir;
 
+        if (chdir(output_dir) < 0)
+                die("Can't access directory %s", output_dir);
+
         if (daemon)
                 start_daemon();