From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Fri, 4 Sep 2015 21:34:44 +0000 (-0400)
Subject: Fix: Invalid parameter error reported when untracking PID
X-Git-Tag: v2.7.0-rc2~77
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=c554d61c3723b9952e1f6d30fd210d99cf17586d;p=lttng-tools.git

Fix: Invalid parameter error reported when untracking PID

The LTTng client reports an "Invalid parameter" error if a PID is
untracked from the userspace domain before any PID is tracked in that
domain.

Fixes #931

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---

diff --git a/src/bin/lttng-sessiond/trace-ust.c b/src/bin/lttng-sessiond/trace-ust.c
index befd5a61b..03fb38180 100644
--- a/src/bin/lttng-sessiond/trace-ust.c
+++ b/src/bin/lttng-sessiond/trace-ust.c
@@ -787,7 +787,8 @@ int trace_ust_untrack_pid(struct ltt_ust_session *session, int pid)
 		struct ust_app *app;
 
 		if (!session->pid_tracker.ht) {
-			retval = LTTNG_ERR_INVALID;
+			/* No PID being tracked. */
+			retval = LTTNG_ERR_PID_NOT_TRACKED;
 			goto end;
 		}
 		/* Remove PID from tracker */