#include <lttng-sessiond-comm.h>
#include <lttngerr.h>
+#ifdef CONFIG_LTTNG_TOOLS_HAVE_UST
+#include <ust/lttng-ust-ctl.h>
+#include <ust/lttng-ust-abi.h>
+#else
+#include "lttng-ust-ctl.h"
+#include "lttng-ust-abi.h"
+#endif
+
#include "context.h"
#include "kernel-ctl.h"
error:
return ret;
}
+
+/*
+ * UST support.
+ */
+
+/*
+ * Add UST context to an event of a specific channel.
+ */
+static int add_ustctx_to_event(struct ltt_ust_session *ustsession,
+ struct lttng_ust_context *ustctx,
+ struct ltt_ust_channel *ustchan, char *event_name)
+{
+ int ret, found = 0;
+ struct ltt_ust_event *ustevent;
+ struct object_data *context_data; /* FIXME: currently a memleak */
+
+ DBG("Add UST context to event %s", event_name);
+
+ ustevent = trace_ust_get_event_by_name(event_name, ustchan);
+ if (ustevent != NULL) {
+ ret = ustctl_add_context(ustsession->sock, ustctx,
+ ustevent->obj, &context_data);
+ if (ret < 0) {
+ goto error;
+ }
+ found = 1;
+ }
+
+ ret = found;
+
+error:
+ return ret;
+}
+
+/*
+ * Add UST context to all channel.
+ *
+ * If event_name is specified, add context to event instead.
+ */
+static int add_ustctx_all_channels(struct ltt_ust_session *ustsession,
+ struct lttng_ust_context *ustctx, char *event_name)
+{
+ int ret, no_event = 0, found = 0;
+ struct ltt_ust_channel *ustchan;
+ struct object_data *context_data; /* FIXME: currently a memleak */
+
+ if (strlen(event_name) == 0) {
+ no_event = 1;
+ }
+
+ DBG("Adding ust context to all channels (event: %s)", event_name);
+
+ /* Go over all channels */
+ cds_list_for_each_entry(ustchan, &ustsession->channels.head, list) {
+ if (no_event) {
+ ret = ustctl_add_context(ustsession->sock,
+ ustctx, ustchan->obj, &context_data);
+ if (ret < 0) {
+ ret = LTTCOMM_UST_CONTEXT_FAIL;
+ goto error;
+ }
+ } else {
+ ret = add_ustctx_to_event(ustsession, ustctx, ustchan, event_name);
+ if (ret < 0) {
+ ret = LTTCOMM_UST_CONTEXT_FAIL;
+ goto error;
+ } else if (ret == 1) {
+ /* Event found and context added */
+ found = 1;
+ break;
+ }
+ }
+ }
+
+ if (!found && !no_event) {
+ ret = LTTCOMM_NO_EVENT;
+ goto error;
+ }
+
+ ret = LTTCOMM_OK;
+
+error:
+ return ret;
+}
+
+/*
+ * Add UST context to a specific channel.
+ *
+ * If event_name is specified, add context to that event.
+ */
+static int add_ustctx_to_channel(struct ltt_ust_session *ustsession,
+ struct lttng_ust_context *ustctx,
+ struct ltt_ust_channel *ustchan, char *event_name)
+{
+ int ret, no_event = 0, found = 0;
+ struct object_data *context_data; /* FIXME: currently a memleak */
+
+ if (strlen(event_name) == 0) {
+ no_event = 1;
+ }
+
+ DBG("Add UST context to channel '%s', event '%s'",
+ ustchan->name, event_name);
+
+ if (no_event) {
+ ret = ustctl_add_context(ustsession->sock, ustctx,
+ ustchan->obj, &context_data);
+ if (ret < 0) {
+ ret = LTTCOMM_UST_CONTEXT_FAIL;
+ goto error;
+ }
+ } else {
+ ret = add_ustctx_to_event(ustsession, ustctx, ustchan, event_name);
+ if (ret < 0) {
+ ret = LTTCOMM_UST_CONTEXT_FAIL;
+ goto error;
+ } else if (ret == 1) {
+ /* Event found and context added */
+ found = 1;
+ }
+ }
+
+ if (!found && !no_event) {
+ ret = LTTCOMM_NO_EVENT;
+ goto error;
+ }
+
+ ret = LTTCOMM_OK;
+
+error:
+ return ret;
+}
+
+/*
+ * Add UST context to tracer.
+ */
+int context_ust_add(struct ltt_ust_session *ustsession,
+ struct lttng_event_context *ctx, char *event_name,
+ char *channel_name)
+{
+ int ret;
+ struct ltt_ust_channel *ustchan;
+ struct lttng_ust_context ustctx;
+
+ /* Setup UST context structure */
+ ustctx.ctx = ctx->ctx;
+
+ if (strlen(channel_name) == 0) {
+ ret = add_ustctx_all_channels(ustsession, &ustctx, event_name);
+ if (ret != LTTCOMM_OK) {
+ goto error;
+ }
+ } else {
+ /* Get UST channel */
+ ustchan = trace_ust_get_channel_by_name(channel_name, ustsession);
+ if (ustchan == NULL) {
+ ret = LTTCOMM_UST_CHAN_NOT_FOUND;
+ goto error;
+ }
+
+ ret = add_ustctx_to_channel(ustsession, &ustctx, ustchan, event_name);
+ if (ret != LTTCOMM_OK) {
+ goto error;
+ }
+ }
+
+ ret = LTTCOMM_OK;
+
+error:
+ return ret;
+}