Remove all remaining sessiond kernel command
[lttng-tools.git] / ltt-sessiond / main.c
index c2a4be9af24e76f8d83459480487ccf16f9b3de0..cb8b98c7b7141ec4b9492738ee3d87abf846d4b5 100644 (file)
@@ -1291,17 +1291,10 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
        }
 
        /*
-        * Check kernel command for kernel session.
+        * Check domain type for specifif "pre-action".
         */
-       switch (cmd_ctx->lsm->cmd_type) {
-       case LTTNG_ADD_CONTEXT:
-       case LTTNG_DISABLE_ALL_EVENT:
-       case LTTNG_DISABLE_CHANNEL:
-       case LTTNG_DISABLE_EVENT:
-       case LTTNG_KERNEL_ENABLE_ALL_EVENT:
-       case LTTNG_KERNEL_ENABLE_CHANNEL:
-       case LTTNG_KERNEL_ENABLE_EVENT:
-       case LTTNG_LIST_TRACEPOINTS:
+       switch (cmd_ctx->lsm->domain.type) {
+       case LTTNG_DOMAIN_KERNEL:
                /* Kernel tracer check */
                if (kernel_tracer_fd == 0) {
                        init_kernel_tracer();
@@ -1329,20 +1322,11 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
                                }
                        }
                }
+               break;
+       default:
+               break;
        }
 
-#ifdef DISABLED
-       /* Connect to ust apps if available pid */
-       if (cmd_ctx->lsm->pid > 0) {
-               /* Connect to app using ustctl API */
-               cmd_ctx->ust_sock = ust_connect_app(cmd_ctx->lsm->pid);
-               if (cmd_ctx->ust_sock < 0) {
-                       ret = LTTCOMM_NO_TRACEABLE;
-                       goto error;
-               }
-       }
-#endif /* DISABLED */
-
        /* Process by command type */
        switch (cmd_ctx->lsm->cmd_type) {
        case LTTNG_ADD_CONTEXT:
@@ -1504,9 +1488,9 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
                ret = LTTCOMM_OK;
                break;
        }
-       case LTTNG_KERNEL_ENABLE_CHANNEL:
+       case LTTNG_ENABLE_CHANNEL:
        {
-               struct ltt_kernel_channel *chan;
+               struct ltt_kernel_channel *kchan;
 
                /* Setup lttng message with no payload */
                ret = setup_lttng_msg(cmd_ctx, 0);
@@ -1514,44 +1498,53 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
                        goto setup_error;
                }
 
-               chan = get_kernel_channel_by_name(cmd_ctx->lsm->u.enable.channel_name,
-                               cmd_ctx->session->kernel_session);
-               if (chan == NULL) {
-                       /* Channel not found, creating it */
-                       DBG("Creating kernel channel");
+               switch (cmd_ctx->lsm->domain.type) {
+               case LTTNG_DOMAIN_KERNEL:
+                       kchan = get_kernel_channel_by_name(cmd_ctx->lsm->u.enable.channel_name,
+                                       cmd_ctx->session->kernel_session);
+                       if (kchan == NULL) {
+                               /* Channel not found, creating it */
+                               DBG("Creating kernel channel");
 
-                       ret = kernel_create_channel(cmd_ctx->session->kernel_session,
-                                       &cmd_ctx->lsm->u.channel.chan, cmd_ctx->session->path);
-                       if (ret < 0) {
-                               ret = LTTCOMM_KERN_CHAN_FAIL;
-                               goto error;
-                       }
+                               ret = kernel_create_channel(cmd_ctx->session->kernel_session,
+                                               &cmd_ctx->lsm->u.channel.chan, cmd_ctx->session->path);
+                               if (ret < 0) {
+                                       ret = LTTCOMM_KERN_CHAN_FAIL;
+                                       goto error;
+                               }
 
-                       /* Notify kernel thread that there is a new channel */
-                       ret = notify_kernel_pollfd();
-                       if (ret < 0) {
-                               ret = LTTCOMM_FATAL;
-                               goto error;
-                       }
-               } else if (chan->enabled == 0) {
-                       ret = kernel_enable_channel(chan);
-                       if (ret < 0) {
-                               if (ret != EEXIST) {
-                                       ret = LTTCOMM_KERN_CHAN_ENABLE_FAIL;
+                               /* Notify kernel thread that there is a new channel */
+                               ret = notify_kernel_pollfd();
+                               if (ret < 0) {
+                                       ret = LTTCOMM_FATAL;
+                                       goto error;
+                               }
+                       } else if (kchan->enabled == 0) {
+                               ret = kernel_enable_channel(kchan);
+                               if (ret < 0) {
+                                       if (ret != EEXIST) {
+                                               ret = LTTCOMM_KERN_CHAN_ENABLE_FAIL;
+                                       }
+                                       goto error;
                                }
-                               goto error;
                        }
+
+                       kernel_wait_quiescent(kernel_tracer_fd);
+                       break;
+               default:
+                       /* TODO: Userspace tracing */
+                       ret = LTTCOMM_NOT_IMPLEMENTED;
+                       goto error;
                }
 
-               kernel_wait_quiescent(kernel_tracer_fd);
                ret = LTTCOMM_OK;
                break;
        }
-       case LTTNG_KERNEL_ENABLE_EVENT:
+       case LTTNG_ENABLE_EVENT:
        {
                char *channel_name;
                struct ltt_kernel_channel *kchan;
-               struct ltt_kernel_event *ev;
+               struct ltt_kernel_event *kevent;
                struct lttng_channel *chan;
 
                /* Setup lttng message with no payload */
@@ -1562,57 +1555,65 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
 
                channel_name = cmd_ctx->lsm->u.enable.channel_name;
 
-               do {
-                       kchan = get_kernel_channel_by_name(channel_name,
-                                       cmd_ctx->session->kernel_session);
-                       if (kchan == NULL) {
-                               DBG("Channel not found. Creating channel %s", channel_name);
+               switch (cmd_ctx->lsm->domain.type) {
+               case LTTNG_DOMAIN_KERNEL:
+                       do {
+                               kchan = get_kernel_channel_by_name(channel_name,
+                                               cmd_ctx->session->kernel_session);
+                               if (kchan == NULL) {
+                                       DBG("Channel not found. Creating channel %s", channel_name);
+
+                                       chan = init_default_channel(channel_name);
+                                       if (chan == NULL) {
+                                               ret = LTTCOMM_FATAL;
+                                               goto error;
+                                       }
 
-                               chan = init_default_channel(channel_name);
-                               if (chan == NULL) {
-                                       ret = LTTCOMM_FATAL;
-                                       goto error;
+                                       ret = kernel_create_channel(cmd_ctx->session->kernel_session,
+                                                       chan, cmd_ctx->session->path);
+                                       if (ret < 0) {
+                                               ret = LTTCOMM_KERN_CHAN_FAIL;
+                                               goto error;
+                                       }
                                }
+                       } while (kchan == NULL);
 
-                               ret = kernel_create_channel(cmd_ctx->session->kernel_session,
-                                               chan, cmd_ctx->session->path);
-                               if (ret < 0) {
-                                       ret = LTTCOMM_KERN_CHAN_FAIL;
+                       kevent = get_kernel_event_by_name(cmd_ctx->lsm->u.enable.event.name, kchan);
+                       if (kevent == NULL) {
+                               DBG("Creating kernel event %s for channel %s.",
+                                               cmd_ctx->lsm->u.enable.event.name, channel_name);
+                               ret = kernel_create_event(&cmd_ctx->lsm->u.enable.event, kchan);
+                       } else {
+                               DBG("Enabling kernel event %s for channel %s.",
+                                               kevent->event->name, channel_name);
+                               ret = kernel_enable_event(kevent);
+                               if (ret == -EEXIST) {
+                                       ret = LTTCOMM_KERN_EVENT_EXIST;
                                        goto error;
                                }
                        }
-               } while (kchan == NULL);
 
-               ev = get_kernel_event_by_name(cmd_ctx->lsm->u.enable.event.name, kchan);
-               if (ev == NULL) {
-                       DBG("Creating kernel event %s for channel %s.",
-                                       cmd_ctx->lsm->u.enable.event.name, channel_name);
-                       ret = kernel_create_event(&cmd_ctx->lsm->u.enable.event, kchan);
-               } else {
-                       DBG("Enabling kernel event %s for channel %s.",
-                                       cmd_ctx->lsm->u.enable.event.name, channel_name);
-                       ret = kernel_enable_event(ev);
-                       if (ret == -EEXIST) {
-                               ret = LTTCOMM_KERN_EVENT_EXIST;
+                       if (ret < 0) {
+                               ret = LTTCOMM_KERN_ENABLE_FAIL;
                                goto error;
                        }
-               }
 
-               if (ret < 0) {
-                       ret = LTTCOMM_KERN_ENABLE_FAIL;
+                       kernel_wait_quiescent(kernel_tracer_fd);
+                       break;
+               default:
+                       /* TODO: Userspace tracing */
+                       ret = LTTCOMM_NOT_IMPLEMENTED;
                        goto error;
                }
-
-               kernel_wait_quiescent(kernel_tracer_fd);
                ret = LTTCOMM_OK;
                break;
        }
-       case LTTNG_KERNEL_ENABLE_ALL_EVENT:
+       case LTTNG_ENABLE_ALL_EVENT:
        {
                int size, i;
                char *channel_name;
                struct ltt_kernel_channel *kchan;
-               struct ltt_kernel_event *ev;
+               struct ltt_kernel_event *kevent;
                struct lttng_event *event_list;
                struct lttng_channel *chan;
 
@@ -1626,60 +1627,69 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
 
                channel_name = cmd_ctx->lsm->u.enable.channel_name;
 
-               do {
-                       kchan = get_kernel_channel_by_name(channel_name,
-                                       cmd_ctx->session->kernel_session);
-                       if (kchan == NULL) {
-                               DBG("Channel not found. Creating channel %s", channel_name);
+               switch (cmd_ctx->lsm->domain.type) {
+               case LTTNG_DOMAIN_KERNEL:
+                       do {
+                               kchan = get_kernel_channel_by_name(channel_name,
+                                               cmd_ctx->session->kernel_session);
+                               if (kchan == NULL) {
+                                       DBG("Channel not found. Creating channel %s", channel_name);
+
+                                       chan = init_default_channel(channel_name);
+                                       if (chan == NULL) {
+                                               ret = LTTCOMM_FATAL;
+                                               goto error;
+                                       }
 
-                               chan = init_default_channel(channel_name);
-                               if (chan == NULL) {
-                                       ret = LTTCOMM_FATAL;
-                                       goto error;
+                                       ret = kernel_create_channel(cmd_ctx->session->kernel_session,
+                                                       chan, cmd_ctx->session->path);
+                                       if (ret < 0) {
+                                               ret = LTTCOMM_KERN_CHAN_FAIL;
+                                               goto error;
+                                       }
                                }
+                       } while (kchan == NULL);
 
-                               ret = kernel_create_channel(cmd_ctx->session->kernel_session,
-                                               chan, cmd_ctx->session->path);
+                       /* For each event in the kernel session */
+                       cds_list_for_each_entry(kevent, &kchan->events_list.head, list) {
+                               DBG("Enabling kernel event %s for channel %s.",
+                                               kevent->event->name, channel_name);
+                               ret = kernel_enable_event(kevent);
                                if (ret < 0) {
-                                       ret = LTTCOMM_KERN_CHAN_FAIL;
-                                       goto error;
+                                       continue;
                                }
                        }
-               } while (kchan == NULL);
 
-               /* For each event in the kernel session */
-               cds_list_for_each_entry(ev, &kchan->events_list.head, list) {
-                       DBG("Enabling kernel event %s for channel %s.",
-                                       ev->event->name, channel_name);
-                       ret = kernel_enable_event(ev);
-                       if (ret < 0) {
-                               continue;
+                       size = kernel_list_events(kernel_tracer_fd, &event_list);
+                       if (size < 0) {
+                               ret = LTTCOMM_KERN_LIST_FAIL;
+                               goto error;
                        }
-               }
 
-               size = kernel_list_events(kernel_tracer_fd, &event_list);
-               if (size < 0) {
-                       ret = LTTCOMM_KERN_LIST_FAIL;
-                       goto error;
-               }
-
-               for (i = 0; i < size; i++) {
-                       ev = get_kernel_event_by_name(event_list[i].name, kchan);
-                       if (ev == NULL) {
-                               /* Default event type for enable all */
-                               event_list[i].type = LTTNG_EVENT_TRACEPOINT;
-                               /* Enable each single tracepoint event */
-                               ret = kernel_create_event(&event_list[i], kchan);
-                               if (ret < 0) {
-                                       /* Ignore error here and continue */
+                       for (i = 0; i < size; i++) {
+                               kevent = get_kernel_event_by_name(event_list[i].name, kchan);
+                               if (kevent == NULL) {
+                                       /* Default event type for enable all */
+                                       event_list[i].type = LTTNG_EVENT_TRACEPOINT;
+                                       /* Enable each single tracepoint event */
+                                       ret = kernel_create_event(&event_list[i], kchan);
+                                       if (ret < 0) {
+                                               /* Ignore error here and continue */
+                                       }
                                }
                        }
-               }
 
-               free(event_list);
+                       free(event_list);
+
+                       /* Quiescent wait after event enable */
+                       kernel_wait_quiescent(kernel_tracer_fd);
+                       break;
+               default:
+                       /* TODO: Userspace tracing */
+                       ret = LTTCOMM_NOT_IMPLEMENTED;
+                       goto error;
+               }
 
-               /* Quiescent wait after event enable */
-               kernel_wait_quiescent(kernel_tracer_fd);
                ret = LTTCOMM_OK;
                break;
        }
@@ -1757,7 +1767,8 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
                        }
 
                        /* For each channel */
-                       cds_list_for_each_entry(chan, &cmd_ctx->session->kernel_session->channel_list.head, list) {
+                       cds_list_for_each_entry(chan,
+                                       &cmd_ctx->session->kernel_session->channel_list.head, list) {
                                if (chan->stream_count == 0) {
                                        ret = kernel_open_channel_stream(chan);
                                        if (ret < 0) {
@@ -1885,47 +1896,6 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
                ret = LTTCOMM_OK;
                break;
        }
-       /*
-       case UST_CREATE_TRACE:
-       {
-               ret = setup_lttng_msg(cmd_ctx, 0);
-               if (ret < 0) {
-                       goto setup_error;
-               }
-
-               ret = ust_create_trace(cmd_ctx);
-               if (ret < 0) {
-                       goto error;
-               }
-               break;
-       }
-       case UST_START_TRACE:
-       {
-               ret = setup_lttng_msg(cmd_ctx, 0);
-               if (ret < 0) {
-                       goto setup_error;
-               }
-
-               ret = ust_start_trace(cmd_ctx);
-               if (ret < 0) {
-                       goto setup_error;
-               }
-               break;
-       }
-       case UST_STOP_TRACE:
-       {
-               ret = setup_lttng_msg(cmd_ctx, 0);
-               if (ret < 0) {
-                       goto setup_error;
-               }
-
-               ret = ust_stop_trace(cmd_ctx);
-               if (ret < 0) {
-                       goto setup_error;
-               }
-               break;
-       }
-       */
        case LTTNG_LIST_DOMAINS:
        {
                size_t nb_dom = 0;
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