X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Flib%2Flttng-ctl%2Flttng-ctl-helper.hpp;fp=src%2Flib%2Flttng-ctl%2Flttng-ctl-helper.hpp;h=4b025a4e268d753543b7929e59c2dc15e63a1d9b;hp=0000000000000000000000000000000000000000;hb=c9e313bc594f40a86eed237dce222c0fc99c957f;hpb=4878de5c7deb512bbdac4fdfc498907efa06fb7c

diff --git a/src/lib/lttng-ctl/lttng-ctl-helper.hpp b/src/lib/lttng-ctl/lttng-ctl-helper.hpp
new file mode 100644
index 000000000..4b025a4e2
--- /dev/null
+++ b/src/lib/lttng-ctl/lttng-ctl-helper.hpp
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#ifndef LTTNG_CTL_HELPER_H
+#define LTTNG_CTL_HELPER_H
+
+#include <stdio.h>
+
+#include <common/sessiond-comm/sessiond-comm.hpp>
+#include <lttng/lttng.h>
+
+/* Copy helper functions. */
+void lttng_ctl_copy_lttng_domain(struct lttng_domain *dst,
+		struct lttng_domain *src);
+
+/*
+ * Sends the lttcomm message to the session daemon and fills buf if the
+ * returned data is not NULL.
+ *
+ * Return the size of the received data on success or else a negative lttng
+ * error code. If buf is NULL, 0 is returned on success.
+ */
+int lttng_ctl_ask_sessiond_fds_varlen(struct lttcomm_session_msg *lsm,
+		const int *fds, size_t nb_fd,
+		const void *vardata, size_t vardata_len,
+		void **user_payload_buf, void **user_cmd_header_buf,
+		size_t *user_cmd_header_len);
+
+/*
+ * Sends the lttcomm message to the session daemon and fills the reply payload.
+ *
+ * Return the size of the received data on success or else a negative lttng
+ * error code.
+ */
+int lttng_ctl_ask_sessiond_payload(struct lttng_payload_view *message,
+		struct lttng_payload *reply);
+
+/*
+ * Calls lttng_ctl_ask_sessiond_fds_varlen() with no expected command header.
+ */
+static inline int lttng_ctl_ask_sessiond_varlen_no_cmd_header(
+		struct lttcomm_session_msg *lsm,
+		const void *vardata,
+		size_t vardata_len,
+		void **user_payload_buf)
+{
+	return lttng_ctl_ask_sessiond_fds_varlen(lsm, NULL, 0, vardata,
+		vardata_len, user_payload_buf, NULL, NULL);
+}
+
+/*
+ * Calls lttng_ctl_ask_sessiond_fds_varlen() with fds and no expected command header.
+ */
+static inline
+int lttng_ctl_ask_sessiond_fds_no_cmd_header(struct lttcomm_session_msg *lsm,
+		const int *fds, size_t nb_fd, void **buf __attribute__((unused)))
+{
+	return lttng_ctl_ask_sessiond_fds_varlen(lsm, fds, nb_fd, NULL,
+		0, NULL, NULL, NULL);
+}
+/*
+ * Use this if no variable length data needs to be sent.
+ */
+static inline
+int lttng_ctl_ask_sessiond(struct lttcomm_session_msg *lsm, void **buf)
+{
+	return lttng_ctl_ask_sessiond_varlen_no_cmd_header(lsm, NULL, 0, buf);
+}
+
+int lttng_check_tracing_group(void);
+
+int connect_sessiond(void);
+
+#endif /* LTTNG_CTL_HELPER_H */