X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Flib%2Flttng-ctl%2Flttng-ctl.c;h=ff57a0d1a7a70237e396274b8a4847f1194beb3d;hp=a398e34d6d7b3c825bb8e4a4e0802412ae96e83f;hb=834978fd9e2392f20867351ca99bf7bdf31b4f56;hpb=5a510c9fc5ac8b5292a497192bd47aeec07112e3

diff --git a/src/lib/lttng-ctl/lttng-ctl.c b/src/lib/lttng-ctl/lttng-ctl.c
index a398e34d6..ff57a0d1a 100644
--- a/src/lib/lttng-ctl/lttng-ctl.c
+++ b/src/lib/lttng-ctl/lttng-ctl.c
@@ -1323,6 +1323,35 @@ int lttng_list_tracepoint_fields(struct lttng_handle *handle,
 	return ret / sizeof(struct lttng_event_field);
 }
 
+/*
+ *  Lists all available kernel system calls. Allocates and sets the contents of
+ *  the events array.
+ *
+ *  Returns the number of lttng_event entries in events; on error, returns a
+ *  negative value.
+ */
+int lttng_list_syscalls(struct lttng_event **events)
+{
+	int ret;
+	struct lttcomm_session_msg lsm;
+
+	if (!events) {
+		return -LTTNG_ERR_INVALID;
+	}
+
+	memset(&lsm, 0, sizeof(lsm));
+	lsm.cmd_type = LTTNG_LIST_SYSCALLS;
+	/* Force kernel domain for system calls. */
+	lsm.domain.type = LTTNG_DOMAIN_KERNEL;
+
+	ret = lttng_ctl_ask_sessiond(&lsm, (void **) events);
+	if (ret < 0) {
+		return ret;
+	}
+
+	return ret / sizeof(struct lttng_event);
+}
+
 /*
  *  Returns a human readable string describing
  *  the error code (a negative value).