lib: compile liblttng-ctl as C++

[lttng-tools.git] / src / lib / lttng-ctl / save.cpp

diff --git a/src/lib/lttng-ctl/save.cpp b/src/lib/lttng-ctl/save.cpp
new file mode 100644 (file)
index 0000000..4589427
--- /dev/null
+++ b/src/lib/lttng-ctl/save.cpp
@@ -0,0 +1,217 @@
+/*
+ * Copyright (C) 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#define _LGPL_SOURCE
+#include <string.h>
+
+#include <lttng/lttng-error.h>
+#include <lttng/save.h>
+#include <lttng/save-internal.h>
+#include <common/sessiond-comm/sessiond-comm.h>
+
+#include "lttng-ctl-helper.h"
+
+struct lttng_save_session_attr *lttng_save_session_attr_create(void)
+{
+       return (lttng_save_session_attr *) zmalloc(sizeof(struct lttng_save_session_attr));
+}
+
+void lttng_save_session_attr_destroy(struct lttng_save_session_attr *output)
+{
+       if (output) {
+               free(output);
+       }
+}
+
+const char *lttng_save_session_attr_get_session_name(
+       struct lttng_save_session_attr *attr)
+{
+       const char *ret = NULL;
+
+       if (attr && attr->session_name[0]) {
+               ret = attr->session_name;
+       }
+
+       return ret;
+}
+
+const char *lttng_save_session_attr_get_output_url(
+       struct lttng_save_session_attr *attr)
+{
+       const char *ret = NULL;
+
+       if (attr && attr->configuration_url[0]) {
+               ret = attr->configuration_url;
+       }
+
+       return ret;
+}
+
+int lttng_save_session_attr_get_overwrite(
+       struct lttng_save_session_attr *attr)
+{
+       return attr ? attr->overwrite : -LTTNG_ERR_INVALID;
+}
+
+int lttng_save_session_attr_get_omit_name(
+       struct lttng_save_session_attr *attr)
+{
+       return attr ? attr->omit_name : -LTTNG_ERR_INVALID;
+}
+
+int lttng_save_session_attr_get_omit_output(
+       struct lttng_save_session_attr *attr)
+{
+       return attr ? attr->omit_output : -LTTNG_ERR_INVALID;
+}
+
+int lttng_save_session_attr_set_session_name(
+       struct lttng_save_session_attr *attr, const char *session_name)
+{
+       int ret = 0;
+
+       if (!attr) {
+               ret = -LTTNG_ERR_INVALID;
+               goto error;
+       }
+
+       if (session_name) {
+               size_t len;
+
+               len = strlen(session_name);
+               if (len >= LTTNG_NAME_MAX) {
+                       ret = -LTTNG_ERR_INVALID;
+                       goto error;
+               }
+
+               ret = lttng_strncpy(attr->session_name, session_name,
+                               sizeof(attr->session_name));
+               if (ret) {
+                       ret = -LTTNG_ERR_INVALID;
+                       goto error;
+               }
+       } else {
+               attr->session_name[0] = '\0';
+       }
+error:
+       return ret;
+}
+
+int lttng_save_session_attr_set_output_url(
+       struct lttng_save_session_attr *attr, const char *url)
+{
+       int ret = 0;
+       size_t len;
+       ssize_t size;
+       struct lttng_uri *uris = NULL;
+
+       if (!attr) {
+               ret = -LTTNG_ERR_INVALID;
+               goto error;
+       }
+
+       if (!url) {
+               attr->configuration_url[0] = '\0';
+               ret = 0;
+               goto end;
+       }
+
+       len = strlen(url);
+       if (len >= PATH_MAX) {
+               ret = -LTTNG_ERR_INVALID;
+               goto error;
+       }
+
+       size = uri_parse_str_urls(url, NULL, &uris);
+       if (size <= 0 || uris[0].dtype != LTTNG_DST_PATH) {
+               ret = -LTTNG_ERR_INVALID;
+               goto error;
+       }
+
+       /* Copy string plus the NULL terminated byte. */
+       ret = lttng_strncpy(attr->configuration_url, uris[0].dst.path,
+                           sizeof(attr->configuration_url));
+       if (ret) {
+               ret = -LTTNG_ERR_INVALID;
+               goto error;
+       }
+
+end:
+error:
+       free(uris);
+       return ret;
+}
+
+int lttng_save_session_attr_set_overwrite(
+       struct lttng_save_session_attr *attr, int overwrite)
+{
+       int ret = 0;
+
+       if (!attr) {
+               ret = -LTTNG_ERR_INVALID;
+               goto end;
+       }
+
+       attr->overwrite = !!overwrite;
+end:
+       return ret;
+}
+
+int lttng_save_session_attr_set_omit_name(
+       struct lttng_save_session_attr *attr, int omit_name)
+{
+       int ret = 0;
+
+       if (!attr) {
+               ret = -LTTNG_ERR_INVALID;
+               goto end;
+       }
+
+       attr->omit_name = !!omit_name;
+end:
+       return ret;
+}
+
+int lttng_save_session_attr_set_omit_output(
+       struct lttng_save_session_attr *attr, int omit_output)
+{
+       int ret = 0;
+
+       if (!attr) {
+               ret = -LTTNG_ERR_INVALID;
+               goto end;
+       }
+
+       attr->omit_output = !!omit_output;
+end:
+       return ret;
+}
+
+/*
+ * The lttng-ctl API does not expose all the information needed to save the
+ * session configurations. Thus, we must send a save command to the session
+ * daemon which will, in turn, save its current session configuration.
+ */
+int lttng_save_session(struct lttng_save_session_attr *attr)
+{
+       struct lttcomm_session_msg lsm;
+       int ret;
+
+       if (!attr) {
+               ret = -LTTNG_ERR_INVALID;
+               goto end;
+       }
+
+       memset(&lsm, 0, sizeof(lsm));
+       lsm.cmd_type = LTTNG_SAVE_SESSION;
+
+       memcpy(&lsm.u.save_session.attr, attr,
+               sizeof(struct lttng_save_session_attr));
+       ret = lttng_ctl_ask_sessiond(&lsm, NULL);
+end:
+       return ret;
+}