Clean-up snapshot command error reporting

[lttng-tools.git] / src / bin / lttng-sessiond / cmd.c

diff --git a/src/bin/lttng-sessiond/cmd.c b/src/bin/lttng-sessiond/cmd.c
index 86c3c765c8dfb2173137894a4fceffb156515ce9..916a73be2fa8990f2317a49ca09c418e998e9619 100644 (file)
--- a/src/bin/lttng-sessiond/cmd.c
+++ b/src/bin/lttng-sessiond/cmd.c
@@ -3207,11 +3207,10 @@ int cmd_snapshot_add_output(struct ltt_session *session,
        DBG("Cmd snapshot add output for session %s", session->name);
 
        /*
-        * Permission denied to create an output if the session is not
-        * set in no output mode.
+        * Can't create an output if the session is not set in no-output mode.
         */
        if (session->output_traces) {
-               ret = LTTNG_ERR_EPERM;
+               ret = LTTNG_ERR_NOT_SNAPSHOT_SESSION;
                goto error;
        }
 
@@ -3275,7 +3274,7 @@ int cmd_snapshot_del_output(struct ltt_session *session,
         * set in no output mode.
         */
        if (session->output_traces) {
-               ret = LTTNG_ERR_EPERM;
+               ret = LTTNG_ERR_NOT_SNAPSHOT_SESSION;
                goto error;
        }
 
@@ -3327,19 +3326,19 @@ ssize_t cmd_snapshot_list_outputs(struct ltt_session *session,
         * set in no output mode.
         */
        if (session->output_traces) {
-               ret = -LTTNG_ERR_EPERM;
-               goto error;
+               ret = -LTTNG_ERR_NOT_SNAPSHOT_SESSION;
+               goto end;
        }
 
        if (session->snapshot.nb_output == 0) {
                ret = 0;
-               goto error;
+               goto end;
        }
 
        list = zmalloc(session->snapshot.nb_output * sizeof(*list));
        if (!list) {
                ret = -LTTNG_ERR_NOMEM;
-               goto error;
+               goto end;
        }
 
        /* Copy list from session to the new list object. */
@@ -3352,14 +3351,14 @@ ssize_t cmd_snapshot_list_outputs(struct ltt_session *session,
                if (lttng_strncpy(list[idx].name, output->name,
                                sizeof(list[idx].name))) {
                        ret = -LTTNG_ERR_INVALID;
-                       goto error_unlock;
+                       goto error;
                }
                if (output->consumer->type == CONSUMER_DST_LOCAL) {
                        if (lttng_strncpy(list[idx].ctrl_url,
                                        output->consumer->dst.trace_path,
                                        sizeof(list[idx].ctrl_url))) {
                                ret = -LTTNG_ERR_INVALID;
-                               goto error_unlock;
+                               goto error;
                        }
                } else {
                        /* Control URI. */
@@ -3367,7 +3366,7 @@ ssize_t cmd_snapshot_list_outputs(struct ltt_session *session,
                                        list[idx].ctrl_url, sizeof(list[idx].ctrl_url));
                        if (ret < 0) {
                                ret = -LTTNG_ERR_NOMEM;
-                               goto error_unlock;
+                               goto error;
                        }
 
                        /* Data URI. */
@@ -3375,7 +3374,7 @@ ssize_t cmd_snapshot_list_outputs(struct ltt_session *session,
                                        list[idx].data_url, sizeof(list[idx].data_url));
                        if (ret < 0) {
                                ret = -LTTNG_ERR_NOMEM;
-                               goto error_unlock;
+                               goto error;
                        }
                }
                idx++;
@@ -3384,10 +3383,10 @@ ssize_t cmd_snapshot_list_outputs(struct ltt_session *session,
        *outputs = list;
        list = NULL;
        ret = session->snapshot.nb_output;
-error_unlock:
-       rcu_read_unlock();
 error:
+       rcu_read_unlock();
        free(list);
+end:
        return ret;
 }
 
@@ -3861,7 +3860,7 @@ int cmd_snapshot_record(struct ltt_session *session,
         * set in no output mode.
         */
        if (session->output_traces) {
-               ret = LTTNG_ERR_EPERM;
+               ret = LTTNG_ERR_NOT_SNAPSHOT_SESSION;
                goto error;
        }