X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=liblttng-ust-ctl%2Fustctl.c;h=854d8ae391d25c43a2179193c99dc398a9ee7ef4;hb=e1919a410049bf776e29f4da4d48e514476db455;hp=e00caf15ec3ed57b187d56fd915a538daf720aca;hpb=12f3dabc3d0381bda42b425af136b445177600bf;p=lttng-ust.git

diff --git a/liblttng-ust-ctl/ustctl.c b/liblttng-ust-ctl/ustctl.c
index e00caf15..854d8ae3 100644
--- a/liblttng-ust-ctl/ustctl.c
+++ b/liblttng-ust-ctl/ustctl.c
@@ -31,6 +31,7 @@
 #include "../libringbuffer/backend.h"
 #include "../libringbuffer/frontend.h"
 #include "../liblttng-ust/wait.h"
+#include "../liblttng-ust/lttng-rb-clients.h"
 
 /*
  * Number of milliseconds to retry before failing metadata writes on
@@ -63,10 +64,14 @@ struct ustctl_consumer_stream {
 };
 
 extern void lttng_ring_buffer_client_overwrite_init(void);
+extern void lttng_ring_buffer_client_overwrite_rt_init(void);
 extern void lttng_ring_buffer_client_discard_init(void);
+extern void lttng_ring_buffer_client_discard_rt_init(void);
 extern void lttng_ring_buffer_metadata_client_init(void);
 extern void lttng_ring_buffer_client_overwrite_exit(void);
+extern void lttng_ring_buffer_client_overwrite_rt_exit(void);
 extern void lttng_ring_buffer_client_discard_exit(void);
+extern void lttng_ring_buffer_client_discard_rt_exit(void);
 extern void lttng_ring_buffer_metadata_client_exit(void);
 
 volatile enum ust_loglevel ust_loglevel;
@@ -268,6 +273,40 @@ int ustctl_set_filter(int sock, struct lttng_ust_filter_bytecode *bytecode,
 	return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
 }
 
+int ustctl_set_exclusion(int sock, struct lttng_ust_event_exclusion *exclusion,
+		struct lttng_ust_object_data *obj_data)
+{
+	struct ustcomm_ust_msg lum;
+	struct ustcomm_ust_reply lur;
+	int ret;
+
+	if (!obj_data) {
+		return -EINVAL;
+	}
+
+	memset(&lum, 0, sizeof(lum));
+	lum.handle = obj_data->handle;
+	lum.cmd = LTTNG_UST_EXCLUSION;
+	lum.u.exclusion.count = exclusion->count;
+
+	ret = ustcomm_send_app_msg(sock, &lum);
+	if (ret) {
+		return ret;
+	}
+
+	/* send var len bytecode */
+	ret = ustcomm_send_unix_sock(sock,
+			exclusion->names,
+			exclusion->count * LTTNG_UST_SYM_NAME_LEN);
+	if (ret < 0) {
+		return ret;
+	}
+	if (ret != exclusion->count * LTTNG_UST_SYM_NAME_LEN) {
+		return -EINVAL;
+	}
+	return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
+}
+
 /* Enable event, channel and session ioctl */
 int ustctl_enable(int sock, struct lttng_ust_object_data *object)
 {
@@ -752,9 +791,7 @@ int ustctl_send_channel_to_ust(int sock, int session_handle,
 		return ret;
 	ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
 	if (!ret) {
-		if (lur.ret_val >= 0) {
-			channel_data->handle = lur.ret_val;
-		}
+		channel_data->handle = lur.ret_val;
 	}
 	return ret;
 }
@@ -915,8 +952,19 @@ struct ustctl_consumer_channel *
 	switch (attr->type) {
 	case LTTNG_UST_CHAN_PER_CPU:
 		if (attr->output == LTTNG_UST_MMAP) {
-			transport_name = attr->overwrite ?
-				"relay-overwrite-mmap" : "relay-discard-mmap";
+			if (attr->overwrite) {
+				if (attr->read_timer_interval == 0) {
+					transport_name = "relay-overwrite-mmap";
+				} else {
+					transport_name = "relay-overwrite-rt-mmap";
+				}
+			} else {
+				if (attr->read_timer_interval == 0) {
+					transport_name = "relay-discard-mmap";
+				} else {
+					transport_name = "relay-discard-rt-mmap";
+				}
+			}
 		} else {
 			return NULL;
 		}
@@ -947,12 +995,14 @@ struct ustctl_consumer_channel *
 			attr->subbuf_size, attr->num_subbuf,
 			attr->switch_timer_interval,
 			attr->read_timer_interval,
-			attr->uuid);
+			attr->uuid, attr->chan_id);
 	if (!chan->chan) {
 		goto chan_error;
 	}
 	chan->chan->ops = &transport->ops;
 	memcpy(&chan->attr, attr, sizeof(chan->attr));
+	chan->wait_fd = ustctl_channel_get_wait_fd(chan);
+	chan->wakeup_fd = ustctl_channel_get_wakeup_fd(chan);
 	return chan;
 
 chan_error:
@@ -962,6 +1012,8 @@ chan_error:
 
 void ustctl_destroy_channel(struct ustctl_consumer_channel *chan)
 {
+	(void) ustctl_channel_close_wait_fd(chan);
+	(void) ustctl_channel_close_wakeup_fd(chan);
 	chan->chan->ops->channel_destroy(chan->chan);
 	free(chan);
 }
@@ -1039,22 +1091,64 @@ end:
 	return ret;
 }
 
+/*
+ * Write at most one packet in the channel.
+ * Returns the number of bytes written on success, < 0 on error.
+ */
+ssize_t ustctl_write_one_packet_to_channel(
+		struct ustctl_consumer_channel *channel,
+		const char *metadata_str,	/* NOT null-terminated */
+		size_t len)			/* metadata length */
+{
+	struct lttng_ust_lib_ring_buffer_ctx ctx;
+	struct lttng_channel *chan = channel->chan;
+	const char *str = metadata_str;
+	ssize_t reserve_len;
+	int ret;
+
+	reserve_len = min_t(ssize_t,
+			chan->ops->packet_avail_size(chan->chan, chan->handle),
+			len);
+	lib_ring_buffer_ctx_init(&ctx, chan->chan, NULL, reserve_len,
+			sizeof(char), -1, chan->handle);
+	ret = chan->ops->event_reserve(&ctx, 0);
+	if (ret != 0) {
+		DBG("LTTng: event reservation failed");
+		assert(ret < 0);
+		reserve_len = ret;
+		goto end;
+	}
+	chan->ops->event_write(&ctx, str, reserve_len);
+	chan->ops->event_commit(&ctx);
+
+end:
+	return reserve_len;
+}
+
 int ustctl_channel_close_wait_fd(struct ustctl_consumer_channel *consumer_chan)
 {
 	struct channel *chan;
+	int ret;
 
 	chan = consumer_chan->chan->chan;
-	return ring_buffer_channel_close_wait_fd(&chan->backend.config,
+	ret = ring_buffer_channel_close_wait_fd(&chan->backend.config,
 			chan, chan->handle);
+	if (!ret)
+		consumer_chan->wait_fd = -1;
+	return ret;
 }
 
 int ustctl_channel_close_wakeup_fd(struct ustctl_consumer_channel *consumer_chan)
 {
 	struct channel *chan;
+	int ret;
 
 	chan = consumer_chan->chan->chan;
-	return ring_buffer_channel_close_wakeup_fd(&chan->backend.config,
+	ret = ring_buffer_channel_close_wakeup_fd(&chan->backend.config,
 			chan, chan->handle);
+	if (!ret)
+		consumer_chan->wakeup_fd = -1;
+	return ret;
 }
 
 int ustctl_stream_close_wait_fd(struct ustctl_consumer_stream *stream)
@@ -1128,6 +1222,8 @@ void ustctl_destroy_stream(struct ustctl_consumer_stream *stream)
 	assert(stream);
 	buf = stream->buf;
 	consumer_chan = stream->chan;
+	(void) ustctl_stream_close_wait_fd(stream);
+	(void) ustctl_stream_close_wakeup_fd(stream);
 	lib_ring_buffer_release_read(buf, consumer_chan->chan->handle);
 	free(stream);
 }
@@ -1404,6 +1500,144 @@ void ustctl_flush_buffer(struct ustctl_consumer_stream *stream,
 		consumer_chan->chan->handle);
 }
 
+static
+struct lttng_ust_client_lib_ring_buffer_client_cb *get_client_cb(
+		struct lttng_ust_lib_ring_buffer *buf,
+		struct lttng_ust_shm_handle *handle)
+{
+	struct channel *chan;
+	const struct lttng_ust_lib_ring_buffer_config *config;
+	struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
+
+	chan = shmp(handle, buf->backend.chan);
+	config = &chan->backend.config;
+	if (!config->cb_ptr)
+		return NULL;
+	client_cb = caa_container_of(config->cb_ptr,
+			struct lttng_ust_client_lib_ring_buffer_client_cb,
+			parent);
+	return client_cb;
+}
+
+int ustctl_get_timestamp_begin(struct ustctl_consumer_stream *stream,
+		uint64_t *timestamp_begin)
+{
+	struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
+	struct lttng_ust_lib_ring_buffer *buf;
+	struct lttng_ust_shm_handle *handle;
+
+	if (!stream || !timestamp_begin)
+		return -EINVAL;
+	buf = stream->buf;
+	handle = stream->chan->chan->handle;
+	client_cb = get_client_cb(buf, handle);
+	if (!client_cb)
+		return -ENOSYS;
+	return client_cb->timestamp_begin(buf, handle, timestamp_begin);
+}
+
+int ustctl_get_timestamp_end(struct ustctl_consumer_stream *stream,
+	uint64_t *timestamp_end)
+{
+	struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
+	struct lttng_ust_lib_ring_buffer *buf;
+	struct lttng_ust_shm_handle *handle;
+
+	if (!stream || !timestamp_end)
+		return -EINVAL;
+	buf = stream->buf;
+	handle = stream->chan->chan->handle;
+	client_cb = get_client_cb(buf, handle);
+	if (!client_cb)
+		return -ENOSYS;
+	return client_cb->timestamp_end(buf, handle, timestamp_end);
+}
+
+int ustctl_get_events_discarded(struct ustctl_consumer_stream *stream,
+	uint64_t *events_discarded)
+{
+	struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
+	struct lttng_ust_lib_ring_buffer *buf;
+	struct lttng_ust_shm_handle *handle;
+
+	if (!stream || !events_discarded)
+		return -EINVAL;
+	buf = stream->buf;
+	handle = stream->chan->chan->handle;
+	client_cb = get_client_cb(buf, handle);
+	if (!client_cb)
+		return -ENOSYS;
+	return client_cb->events_discarded(buf, handle, events_discarded);
+}
+
+int ustctl_get_content_size(struct ustctl_consumer_stream *stream,
+	uint64_t *content_size)
+{
+	struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
+	struct lttng_ust_lib_ring_buffer *buf;
+	struct lttng_ust_shm_handle *handle;
+
+	if (!stream || !content_size)
+		return -EINVAL;
+	buf = stream->buf;
+	handle = stream->chan->chan->handle;
+	client_cb = get_client_cb(buf, handle);
+	if (!client_cb)
+		return -ENOSYS;
+	return client_cb->content_size(buf, handle, content_size);
+}
+
+int ustctl_get_packet_size(struct ustctl_consumer_stream *stream,
+	uint64_t *packet_size)
+{
+	struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
+	struct lttng_ust_lib_ring_buffer *buf;
+	struct lttng_ust_shm_handle *handle;
+
+	if (!stream || !packet_size)
+		return -EINVAL;
+	buf = stream->buf;
+	handle = stream->chan->chan->handle;
+	client_cb = get_client_cb(buf, handle);
+	if (!client_cb)
+		return -ENOSYS;
+	return client_cb->packet_size(buf, handle, packet_size);
+}
+
+int ustctl_get_stream_id(struct ustctl_consumer_stream *stream,
+		uint64_t *stream_id)
+{
+	struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
+	struct lttng_ust_lib_ring_buffer *buf;
+	struct lttng_ust_shm_handle *handle;
+
+	if (!stream || !stream_id)
+		return -EINVAL;
+	buf = stream->buf;
+	handle = stream->chan->chan->handle;
+	client_cb = get_client_cb(buf, handle);
+	if (!client_cb)
+		return -ENOSYS;
+	return client_cb->stream_id(buf, handle, stream_id);
+}
+
+int ustctl_get_current_timestamp(struct ustctl_consumer_stream *stream,
+		uint64_t *ts)
+{
+	struct lttng_ust_client_lib_ring_buffer_client_cb *client_cb;
+	struct lttng_ust_lib_ring_buffer *buf;
+	struct lttng_ust_shm_handle *handle;
+
+	if (!stream || !ts)
+		return -EINVAL;
+	buf = stream->buf;
+	handle = stream->chan->chan->handle;
+	client_cb = get_client_cb(buf, handle);
+	if (!client_cb || !client_cb->current_timestamp)
+		return -ENOSYS;
+	return client_cb->current_timestamp(buf, handle, ts);
+}
+
 /*
  * Returns 0 on success, negative error value on error.
  */
@@ -1555,7 +1789,7 @@ int ustctl_recv_register_event(int sock,
 		goto signature_error;
 	}
 	/* Enforce end of string */
-	signature[signature_len - 1] = '\0';
+	a_sign[signature_len - 1] = '\0';
 
 	/* recv fields */
 	if (fields_len) {
@@ -1748,14 +1982,18 @@ void ustctl_init(void)
 	init_usterr();
 	lttng_ring_buffer_metadata_client_init();
 	lttng_ring_buffer_client_overwrite_init();
+	lttng_ring_buffer_client_overwrite_rt_init();
 	lttng_ring_buffer_client_discard_init();
+	lttng_ring_buffer_client_discard_rt_init();
 	lib_ringbuffer_signal_init();
 }
 
 static __attribute__((destructor))
 void ustctl_exit(void)
 {
+	lttng_ring_buffer_client_discard_rt_exit();
 	lttng_ring_buffer_client_discard_exit();
+	lttng_ring_buffer_client_overwrite_rt_exit();
 	lttng_ring_buffer_client_overwrite_exit();
 	lttng_ring_buffer_metadata_client_exit();
 }