#define _LTTNG_H
#include <limits.h>
+#include <netinet/in.h>
#include <stdint.h>
#include <sys/types.h>
*/
#define LTTNG_SYMBOL_NAME_LEN 256
+/*
+ * Maximum length of a domain name. This is the limit for the total length of a
+ * domain name specified by the RFC 1035 (https://www.ietf.org/rfc/rfc1035.txt)
+ */
+#define LTTNG_MAX_DNNAME 255
+
/*
* Every lttng_event_* structure both apply to kernel event and user-space
* event.
LTTNG_CALIBRATE_FUNCTION = 0,
};
+/* Destination type of lttng URI */
+enum lttng_dst_type {
+ LTTNG_DST_IPV4, /* IPv4 protocol */
+ LTTNG_DST_IPV6, /* IPv6 protocol */
+ LTTNG_DST_PATH, /* Local file system */
+};
+
+/* Type of lttng URI where it is a final destination or a hop */
+enum lttng_uri_type {
+ LTTNG_URI_DST, /* The URI is a final destination */
+ /*
+ * Hop are not supported yet but planned for a future release.
+ *
+ LTTNG_URI_HOP,
+ */
+};
+
+/* Communication stream type of a lttng URI */
+enum lttng_stream_type {
+ LTTNG_STREAM_CONTROL,
+ LTTNG_STREAM_DATA,
+};
+
+/*
+ * Protocol type of a lttng URI. The value 0 indicate that the proto_type field
+ * should be ignored.
+ */
+enum lttng_proto_type {
+ LTTNG_TCP = 1,
+ /*
+ * UDP protocol is not supported for now.
+ *
+ LTTNG_UDP = 2,
+ */
+};
+
+/*
+ * Structure representing an URI supported by lttng.
+ */
+#define LTTNG_URI_PADDING1_LEN 16
+#define LTTNG_URI_PADDING2_LEN LTTNG_SYMBOL_NAME_LEN + 32
+struct lttng_uri {
+ enum lttng_dst_type dtype;
+ enum lttng_uri_type utype;
+ enum lttng_stream_type stype;
+ enum lttng_proto_type proto;
+ in_port_t port;
+ char padding[LTTNG_URI_PADDING1_LEN];
+ union {
+ char ipv4[INET_ADDRSTRLEN];
+ char ipv6[INET6_ADDRSTRLEN];
+ char path[PATH_MAX];
+ char padding[LTTNG_URI_PADDING2_LEN];
+ } dst;
+};
+
/*
* The structures should be initialized to zero before use.
*/
enum lttng_loglevel_type loglevel_type;
int loglevel;
- uint32_t enabled;
+ int32_t enabled; /* Does not apply: -1 */
pid_t pid;
char padding[LTTNG_EVENT_PADDING1];
} attr;
};
+enum lttng_event_field_type {
+ LTTNG_EVENT_FIELD_OTHER = 0,
+ LTTNG_EVENT_FIELD_INTEGER = 1,
+ LTTNG_EVENT_FIELD_ENUM = 2,
+ LTTNG_EVENT_FIELD_FLOAT = 3,
+ LTTNG_EVENT_FIELD_STRING = 4,
+};
+
+#define LTTNG_EVENT_FIELD_PADDING LTTNG_SYMBOL_NAME_LEN + 32
+struct lttng_event_field {
+ char field_name[LTTNG_SYMBOL_NAME_LEN];
+ enum lttng_event_field_type type;
+ char padding[LTTNG_EVENT_FIELD_PADDING];
+ struct lttng_event event;
+};
+
/*
* Tracer channel attributes. For both kernel and user-space.
*
extern int lttng_list_tracepoints(struct lttng_handle *handle,
struct lttng_event **events);
+/*
+ * List the available tracepoints fields of a specific lttng domain.
+ *
+ * Return the size (number of entries) of the "lttng_event_field" array.
+ * Caller must free(3).
+ */
+extern int lttng_list_tracepoint_fields(struct lttng_handle *handle,
+ struct lttng_event_field **fields);
+
/*
* Check if a session daemon is alive.
*