X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=ltt-sessiond%2Fmain.c;h=92e41b1c6aff91b1573843079cfd3420b38dc275;hb=24ccb5f387f66603973a447728262c744e9a7218;hp=4fba6a2cf53a701054601e88df4478f35b658342;hpb=d36b858358a8ef4e00de843379d670925f9c23b6;p=lttng-tools.git

diff --git a/ltt-sessiond/main.c b/ltt-sessiond/main.c
index 4fba6a2cf..92e41b1c6 100644
--- a/ltt-sessiond/main.c
+++ b/ltt-sessiond/main.c
@@ -720,6 +720,7 @@ static struct lttng_channel *init_default_channel(void)
 	chan->attr.num_subbuf = DEFAULT_CHANNEL_SUBBUF_NUM;
 	chan->attr.switch_timer_interval = DEFAULT_CHANNEL_SWITCH_TIMER;
 	chan->attr.read_timer_interval = DEFAULT_CHANNEL_READ_TIMER;
+	chan->attr.output = DEFAULT_CHANNEL_OUTPUT;
 
 error:
 	return chan;
@@ -803,6 +804,7 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
 	 * Check kernel command for kernel session.
 	 */
 	switch (cmd_ctx->lsm->cmd_type) {
+	case LTTNG_KERNEL_ADD_CONTEXT:
 	case LTTNG_KERNEL_CREATE_CHANNEL:
 	case LTTNG_KERNEL_DISABLE_ALL_EVENT:
 	case LTTNG_KERNEL_DISABLE_CHANNEL:
@@ -852,6 +854,84 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
 
 	/* Process by command type */
 	switch (cmd_ctx->lsm->cmd_type) {
+	case LTTNG_KERNEL_ADD_CONTEXT:
+	{
+		int found = 0, no_event = 0;
+		struct ltt_kernel_channel *chan;
+		struct ltt_kernel_event *event;
+
+		/* Setup lttng message with no payload */
+		ret = setup_lttng_msg(cmd_ctx, 0);
+		if (ret < 0) {
+			goto setup_error;
+		}
+
+		/* Check if event name is given */
+		if (strlen(cmd_ctx->lsm->u.context.event_name) == 0) {
+			no_event = 1;
+		}
+
+		if (strlen(cmd_ctx->lsm->u.context.channel_name) == 0) {
+			/* Go over all channels */
+			DBG("Adding context to all channels");
+			cds_list_for_each_entry(chan,
+					&cmd_ctx->session->kernel_session->channel_list.head, list) {
+				if (no_event) {
+					ret = kernel_add_channel_context(chan,
+							&cmd_ctx->lsm->u.context.ctx);
+					if (ret < 0) {
+						continue;
+					}
+				} else {
+					event = get_kernel_event_by_name(cmd_ctx->lsm->u.context.event_name, chan);
+					if (event != NULL) {
+						ret = kernel_add_event_context(event,
+								&cmd_ctx->lsm->u.context.ctx);
+						if (ret < 0) {
+							ret = LTTCOMM_KERN_CONTEXT_FAIL;
+							goto error;
+						}
+						found = 1;
+						break;
+					}
+				}
+			}
+		} else {
+			chan = get_kernel_channel_by_name(cmd_ctx->lsm->u.context.channel_name,
+					cmd_ctx->session->kernel_session);
+			if (chan == NULL) {
+				ret = LTTCOMM_KERN_CHAN_NOT_FOUND;
+				goto error;
+			}
+
+			if (no_event) {
+				ret = kernel_add_channel_context(chan,
+						&cmd_ctx->lsm->u.context.ctx);
+				if (ret < 0) {
+					ret = LTTCOMM_KERN_CONTEXT_FAIL;
+					goto error;
+				}
+			} else {
+				event = get_kernel_event_by_name(cmd_ctx->lsm->u.context.event_name, chan);
+				if (event != NULL) {
+					ret = kernel_add_event_context(event,
+							&cmd_ctx->lsm->u.context.ctx);
+					if (ret < 0) {
+						ret = LTTCOMM_KERN_CONTEXT_FAIL;
+						goto error;
+					}
+				}
+			}
+		}
+
+		if (!found && !no_event) {
+			ret = LTTCOMM_NO_EVENT;
+			goto error;
+		}
+
+		ret = LTTCOMM_OK;
+		break;
+	}
 	case LTTNG_KERNEL_CREATE_CHANNEL:
 	{
 		/* Setup lttng message with no payload */
@@ -873,6 +953,35 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
 		ret = LTTCOMM_OK;
 		break;
 	}
+	case LTTNG_KERNEL_DISABLE_CHANNEL:
+	{
+		struct ltt_kernel_channel *chan;
+
+		/* Setup lttng message with no payload */
+		ret = setup_lttng_msg(cmd_ctx, 0);
+		if (ret < 0) {
+			goto setup_error;
+		}
+
+		chan = get_kernel_channel_by_name(cmd_ctx->lsm->u.disable.channel_name,
+				cmd_ctx->session->kernel_session);
+		if (chan == NULL) {
+			ret = LTTCOMM_KERN_CHAN_NOT_FOUND;
+			goto error;
+		} else if (chan->enabled == 1) {
+			ret = kernel_disable_channel(chan);
+			if (ret < 0) {
+				if (ret != EEXIST) {
+					ret = LTTCOMM_KERN_CHAN_DISABLE_FAIL;
+				}
+				goto error;
+			}
+		}
+
+		kernel_wait_quiescent(kernel_tracer_fd);
+		ret = LTTCOMM_OK;
+		break;
+	}
 	case LTTNG_KERNEL_DISABLE_EVENT:
 	{
 		struct ltt_kernel_channel *chan;
@@ -1058,7 +1167,6 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
 				ret = kernel_create_event(&ev_attr, chan);
 				if (ret < 0) {
 					/* Ignore error here and continue */
-					continue;
 				}
 			}