SoW-2019-0002: Dynamic Snapshot

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

diff --git a/src/bin/lttng-sessiond/utils.c b/src/bin/lttng-sessiond/utils.c
index f77a21ddb153a5ebdd88815af3e9850e37736151..2ae586b512a7117c4ed5d761c84a93283ad679c2 100644 (file)
--- a/src/bin/lttng-sessiond/utils.c
+++ b/src/bin/lttng-sessiond/utils.c
@@ -1,19 +1,9 @@
 /*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
- *                      Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@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
@@ -23,6 +13,7 @@
 #include <common/error.h>
 
 #include "utils.h"
+#include "snapshot.h"
 #include "lttng-sessiond.h"
 
 int ht_cleanup_pipe[2] = { -1, -1 };
@@ -95,3 +86,38 @@ int loglevels_match(int a_loglevel_type, int a_loglevel_value,
 
        return match;
 }
+
+const char *session_get_base_path(const struct ltt_session *session)
+{
+       return consumer_output_get_base_path(session->consumer);
+}
+
+const char *consumer_output_get_base_path(const struct consumer_output *output)
+{
+       return output->type == CONSUMER_DST_LOCAL ?
+                       output->dst.session_root_path :
+                       output->dst.net.base_dir;
+}
+
+/*
+ * Allocate a filter and copy the given original filter.
+ *
+ * Return allocated filter or NULL on error.
+ */
+struct lttng_filter_bytecode *copy_filter_bytecode(
+               const struct lttng_filter_bytecode *orig_f)
+{
+       struct lttng_filter_bytecode *filter = NULL;
+
+       /* Copy filter bytecode */
+       filter = zmalloc(sizeof(*filter) + orig_f->len);
+       if (!filter) {
+               PERROR("zmalloc alloc filter bytecode");
+               goto error;
+       }
+
+       memcpy(filter, orig_f, sizeof(*filter) + orig_f->len);
+
+error:
+       return filter;
+}