Move to kernel style SPDX license identifiers

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

diff --git a/src/bin/lttng-sessiond/event.c b/src/bin/lttng-sessiond/event.c
index f97148db113c2bf1c8f3cc32dd9b6dd38170f599..189236beb1171a05ba21e89b3ecb51216a7b5e47 100644 (file)
--- a/src/bin/lttng-sessiond/event.c
+++ b/src/bin/lttng-sessiond/event.c
@@ -1,19 +1,9 @@
 /*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
- * Copyright (C) 2016 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0-only
  *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
 #define _LGPL_SOURCE
@@ -31,7 +21,8 @@
 #include "event.h"
 #include "kernel.h"
 #include "lttng-sessiond.h"
-#include "ust-ctl.h"
+#include "lttng-ust-ctl.h"
+#include "lttng-ust-error.h"
 #include "ust-app.h"
 #include "trace-kernel.h"
 #include "trace-ust.h"
@@ -69,7 +60,7 @@ static void add_unique_ust_event(struct lttng_ht *ht,
  * If event_name is NULL all events of the specified type are disabled.
  */
 int event_kernel_disable_event(struct ltt_kernel_channel *kchan,
-               char *event_name, enum lttng_event_type type)
+               const char *event_name, enum lttng_event_type type)
 {
        int ret, error = 0, found = 0;
        struct ltt_kernel_event *kevent;
@@ -172,7 +163,8 @@ int event_ust_enable_tracepoint(struct ltt_ust_session *usess,
        rcu_read_lock();
 
        uevent = trace_ust_find_event(uchan->events, event->name, filter,
-                       event->loglevel_type, event->loglevel, exclusion);
+                       (enum lttng_ust_loglevel_type) event->loglevel_type,
+                       event->loglevel, exclusion);
        if (!uevent) {
                ret = trace_ust_create_event(event, filter_expression,
                                filter, exclusion, internal_event, &uevent);
@@ -190,6 +182,7 @@ int event_ust_enable_tracepoint(struct ltt_ust_session *usess,
 
        if (uevent->enabled) {
                /* It's already enabled so everything is OK */
+               assert(!to_create);
                ret = LTTNG_ERR_UST_EVENT_ENABLED;
                goto end;
        }
@@ -257,7 +250,7 @@ error:
  * Disable UST tracepoint of a channel from a UST session.
  */
 int event_ust_disable_tracepoint(struct ltt_ust_session *usess,
-               struct ltt_ust_channel *uchan, char *event_name)
+               struct ltt_ust_channel *uchan, const char *event_name)
 {
        int ret;
        struct ltt_ust_event *uevent;
@@ -506,12 +499,15 @@ int event_agent_enable(struct ltt_ust_session *usess,
                        ret = LTTNG_ERR_NOMEM;
                        goto error;
                }
-
+               filter = NULL;
+               filter_expression = NULL;
                created = 1;
+               assert(!aevent->enabled);
        }
 
-       if (created && filter) {
-               ret = add_filter_app_ctx(filter, filter_expression, agt);
+       if (created && aevent->filter) {
+               ret = add_filter_app_ctx(
+                               aevent->filter, aevent->filter_expression, agt);
                if (ret != LTTNG_OK) {
                        goto error;
                }
@@ -533,13 +529,16 @@ int event_agent_enable(struct ltt_ust_session *usess,
                agent_add_event(aevent, agt);
        }
 
-end:
-       return LTTNG_OK;
+       ret = LTTNG_OK;
+       goto end;
 
 error:
        if (created) {
                agent_destroy_event(aevent);
        }
+end:
+       free(filter);
+       free(filter_expression);
        return ret;
 }
 
@@ -666,7 +665,7 @@ error:
  * Return LTTNG_OK on success or else a LTTNG_ERR* code.
  */
 int event_agent_disable(struct ltt_ust_session *usess, struct agent *agt,
-               char *event_name)
+               const char *event_name)
 {
        int ret = LTTNG_OK;
        struct agent_event *aevent;