Fix bad return value on enable syscalls making it freeze
[lttng-tools.git] / lttng-sessiond / main.c
index bca057543f7afd6762be1377befef278b5120a11..75732a334c376cb5a0b5c7fd666c10ffc3cbccde 100644 (file)
 #include "event.h"
 #include "futex.h"
 #include "hashtable.h"
-#include "kernel-ctl.h"
+#include "kernel.h"
 #include "lttng-sessiond.h"
 #include "shm.h"
 #include "ust-app.h"
 #include "ust-ctl.h"
 #include "utils.h"
 
+#define CONSUMERD_FILE "lttng-consumerd"
+
 struct consumer_data {
        enum lttng_consumer_type type;
 
@@ -169,31 +171,38 @@ static struct ltt_session_list *session_list_ptr;
 int ust_consumerd64_fd = -1;
 int ust_consumerd32_fd = -1;
 
-static const char *consumerd64_prog = "lttng-consumerd";
-static const char *consumerd32_prog = "lttng-consumerd";
-
-static const char *consumerd64_bindir =
-       __stringify(CONFIG_64BIT_BINDIR);
-static const char *consumerd32_bindir =
-       __stringify(CONFIG_32BIT_BINDIR);
+static const char *consumerd32_path =
+       __stringify(CONFIG_CONSUMERD32_PATH);
+static const char *consumerd64_path =
+       __stringify(CONFIG_CONSUMERD64_PATH);
+static const char *consumerd32_libdir =
+       __stringify(CONFIG_CONSUMERD32_LIBDIR);
+static const char *consumerd64_libdir =
+       __stringify(CONFIG_CONSUMERD64_LIBDIR);
 
 static
 void setup_consumerd_path(void)
 {
-       const char *bindir;
+       const char *path, *libdir;
 
        /*
         * Allow INSTALL_BIN_PATH to be used as a target path for the
-        * native architecture size consumer if CONFIG_NBIT_BINDIR as
-        * not been defined.
+        * native architecture size consumer if CONFIG_CONSUMER*_PATH
+        * has not been defined.
         */
-#if (CAA_BITS_PER_LONG == 64)
-       if (!consumerd64_bindir[0]) {
-               consumerd64_bindir = INSTALL_BIN_PATH;
+#if (CAA_BITS_PER_LONG == 32)
+       if (!consumerd32_path[0]) {
+               consumerd32_path = INSTALL_BIN_PATH "/" CONSUMERD_FILE;
+       }
+       if (!consumerd32_libdir[0]) {
+               consumerd32_libdir = INSTALL_LIB_PATH;
+       }
+#elif (CAA_BITS_PER_LONG == 64)
+       if (!consumerd64_path[0]) {
+               consumerd64_path = INSTALL_BIN_PATH "/" CONSUMERD_FILE;
        }
-#elif (CAA_BITS_PER_LONG == 32)
-       if (!consumerd32_bindir[0]) {
-               consumerd32_bindir = INSTALL_BIN_PATH;
+       if (!consumerd64_libdir[0]) {
+               consumerd64_libdir = INSTALL_LIB_PATH;
        }
 #else
 #error "Unknown bitness"
@@ -202,13 +211,21 @@ void setup_consumerd_path(void)
        /*
         * runtime env. var. overrides the build default.
         */
-       bindir = getenv("LTTNG_TOOLS_64BIT_BINDIR");
-       if (bindir) {
-               consumerd64_bindir = bindir;
+       path = getenv("LTTNG_CONSUMERD32_PATH");
+       if (path) {
+               consumerd32_path = path;
        }
-       bindir = getenv("LTTNG_TOOLS_32BIT_BINDIR");
-       if (bindir) {
-               consumerd32_bindir = bindir;
+       path = getenv("LTTNG_CONSUMERD64_PATH");
+       if (path) {
+               consumerd64_path = path;
+       }
+       libdir = getenv("LTTNG_TOOLS_CONSUMERD32_LIBDIR");
+       if (libdir) {
+               consumerd32_libdir = libdir;
+       }
+       libdir = getenv("LTTNG_TOOLS_CONSUMERD64_LIBDIR");
+       if (libdir) {
+               consumerd64_libdir = libdir;
        }
 }
 
@@ -1515,26 +1532,88 @@ static pid_t spawn_consumerd(struct consumer_data *consumer_data)
                        break;
                case LTTNG_CONSUMER64_UST:
                {
-                       char path[PATH_MAX];
+                       char *tmpnew = NULL;
 
-                       snprintf(path, PATH_MAX, "%s/%s",
-                               consumerd64_bindir, consumerd64_prog);
-                       execl(path, verbosity, "-u",
+                       if (consumerd64_libdir[0] != '\0') {
+                               char *tmp;
+                               size_t tmplen;
+
+                               tmp = getenv("LD_LIBRARY_PATH");
+                               if (!tmp) {
+                                       tmp = "";
+                               }
+                               tmplen = strlen("LD_LIBRARY_PATH=")
+                                       + strlen(consumerd64_libdir) + 1 /* : */ + strlen(tmp);
+                               tmpnew = zmalloc(tmplen + 1 /* \0 */);
+                               if (!tmpnew) {
+                                       ret = -ENOMEM;
+                                       goto error;
+                               }
+                               strcpy(tmpnew, "LD_LIBRARY_PATH=");
+                               strcat(tmpnew, consumerd64_libdir);
+                               if (tmp[0] != '\0') {
+                                       strcat(tmpnew, ":");
+                                       strcat(tmpnew, tmp);
+                               }
+                               ret = putenv(tmpnew);
+                               if (ret) {
+                                       ret = -errno;
+                                       goto error;
+                               }
+                       }
+                       ret = execl(consumerd64_path, verbosity, "-u",
                                        "--consumerd-cmd-sock", consumer_data->cmd_unix_sock_path,
                                        "--consumerd-err-sock", consumer_data->err_unix_sock_path,
                                        NULL);
+                       if (consumerd64_libdir[0] != '\0') {
+                               free(tmpnew);
+                       }
+                       if (ret) {
+                               goto error;
+                       }
                        break;
                }
                case LTTNG_CONSUMER32_UST:
                {
-                       char path[PATH_MAX];
+                       char *tmpnew = NULL;
 
-                       snprintf(path, PATH_MAX, "%s/%s",
-                               consumerd32_bindir, consumerd32_prog);
-                       execl(path, verbosity, "-u",
+                       if (consumerd32_libdir[0] != '\0') {
+                               char *tmp;
+                               size_t tmplen;
+
+                               tmp = getenv("LD_LIBRARY_PATH");
+                               if (!tmp) {
+                                       tmp = "";
+                               }
+                               tmplen = strlen("LD_LIBRARY_PATH=")
+                                       + strlen(consumerd32_libdir) + 1 /* : */ + strlen(tmp);
+                               tmpnew = zmalloc(tmplen + 1 /* \0 */);
+                               if (!tmpnew) {
+                                       ret = -ENOMEM;
+                                       goto error;
+                               }
+                               strcpy(tmpnew, "LD_LIBRARY_PATH=");
+                               strcat(tmpnew, consumerd32_libdir);
+                               if (tmp[0] != '\0') {
+                                       strcat(tmpnew, ":");
+                                       strcat(tmpnew, tmp);
+                               }
+                               ret = putenv(tmpnew);
+                               if (ret) {
+                                       ret = -errno;
+                                       goto error;
+                               }
+                       }
+                       ret = execl(consumerd32_path, verbosity, "-u",
                                        "--consumerd-cmd-sock", consumer_data->cmd_unix_sock_path,
                                        "--consumerd-err-sock", consumer_data->err_unix_sock_path,
                                        NULL);
+                       if (consumerd32_libdir[0] != '\0') {
+                               free(tmpnew);
+                       }
+                       if (ret) {
+                               goto error;
+                       }
                        break;
                }
                default:
@@ -1551,6 +1630,7 @@ static pid_t spawn_consumerd(struct consumer_data *consumer_data)
                perror("start consumer fork");
                ret = -errno;
        }
+error:
        return ret;
 }
 
@@ -1921,8 +2001,13 @@ static void list_lttng_channels(int domain, struct ltt_session *session,
                                uchan->attr.switch_timer_interval;
                        channels[i].attr.read_timer_interval =
                                uchan->attr.read_timer_interval;
-                       channels[i].attr.output = uchan->attr.output;
                        channels[i].enabled = uchan->enabled;
+                       switch (uchan->attr.output) {
+                       case LTTNG_UST_MMAP:
+                       default:
+                               channels[i].attr.output = LTTNG_EVENT_MMAP;
+                               break;
+                       }
                        i++;
                }
                break;
@@ -1941,6 +2026,7 @@ static int list_lttng_ust_global_events(char *channel_name,
        int i = 0, ret = 0;
        unsigned int nb_event = 0;
        struct cds_lfht_iter iter;
+       struct cds_lfht_node *node;
        struct ltt_ust_channel *uchan;
        struct ltt_ust_event *uevent;
        struct lttng_event *tmp;
@@ -1949,11 +2035,17 @@ static int list_lttng_ust_global_events(char *channel_name,
 
        rcu_read_lock();
 
-       /* Count events in all channels */
-       cds_lfht_for_each_entry(ust_global->channels, &iter, uchan, node) {
-               nb_event += hashtable_get_count(uchan->events);
+       node = hashtable_lookup(ust_global->channels, (void *) channel_name,
+                       strlen(channel_name), &iter);
+       if (node == NULL) {
+               ret = -LTTCOMM_UST_CHAN_NOT_FOUND;
+               goto error;
        }
 
+       uchan = caa_container_of(node, struct ltt_ust_channel, node);
+
+       nb_event += hashtable_get_count(uchan->events);
+
        if (nb_event == 0) {
                ret = nb_event;
                goto error;
@@ -1967,24 +2059,27 @@ static int list_lttng_ust_global_events(char *channel_name,
                goto error;
        }
 
-       cds_lfht_for_each_entry(ust_global->channels, &iter, uchan, node) {
-               cds_lfht_for_each_entry(uchan->events, &iter, uevent, node) {
-                       strncpy(tmp[i].name, uevent->attr.name, LTTNG_SYMBOL_NAME_LEN);
-                       tmp[i].name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
-                       tmp[i].enabled = uevent->enabled;
-                       switch (uevent->attr.instrumentation) {
-                       case LTTNG_UST_TRACEPOINT:
-                               tmp[i].type = LTTNG_EVENT_TRACEPOINT;
-                               break;
-                       case LTTNG_UST_PROBE:
-                               tmp[i].type = LTTNG_EVENT_PROBE;
-                               break;
-                       case LTTNG_UST_FUNCTION:
-                               tmp[i].type = LTTNG_EVENT_FUNCTION;
-                               break;
-                       }
-                       i++;
+       cds_lfht_for_each_entry(uchan->events, &iter, uevent, node) {
+               strncpy(tmp[i].name, uevent->attr.name, LTTNG_SYMBOL_NAME_LEN);
+               tmp[i].name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
+               tmp[i].enabled = uevent->enabled;
+               switch (uevent->attr.instrumentation) {
+               case LTTNG_UST_TRACEPOINT:
+                       tmp[i].type = LTTNG_EVENT_TRACEPOINT;
+                       break;
+               case LTTNG_UST_PROBE:
+                       tmp[i].type = LTTNG_EVENT_PROBE;
+                       break;
+               case LTTNG_UST_FUNCTION:
+                       tmp[i].type = LTTNG_EVENT_FUNCTION;
+                       break;
+               case LTTNG_UST_TRACEPOINT_LOGLEVEL:
+                       /* TODO */
+                       ret = -LTTCOMM_NOT_IMPLEMENTED;
+                       goto error;
+                       break;
                }
+               i++;
        }
 
        ret = nb_event;
@@ -2073,22 +2168,58 @@ static int cmd_disable_channel(struct ltt_session *session,
                int domain, char *channel_name)
 {
        int ret;
+       struct ltt_ust_session *usess;
+
+       usess = session->ust_session;
 
        switch (domain) {
-               case LTTNG_DOMAIN_KERNEL:
-                       ret = channel_kernel_disable(session->kernel_session,
-                                       channel_name);
-                       if (ret != LTTCOMM_OK) {
-                               goto error;
-                       }
+       case LTTNG_DOMAIN_KERNEL:
+       {
+               ret = channel_kernel_disable(session->kernel_session,
+                               channel_name);
+               if (ret != LTTCOMM_OK) {
+                       goto error;
+               }
 
-                       kernel_wait_quiescent(kernel_tracer_fd);
-                       break;
-               case LTTNG_DOMAIN_UST_PID:
+               kernel_wait_quiescent(kernel_tracer_fd);
+               break;
+       }
+       case LTTNG_DOMAIN_UST:
+       {
+               struct ltt_ust_channel *uchan;
+
+               /* Get channel in global UST domain HT */
+               uchan = trace_ust_find_channel_by_name(usess->domain_global.channels,
+                               channel_name);
+               if (uchan == NULL) {
+                       ret = LTTCOMM_UST_CHAN_NOT_FOUND;
+                       goto error;
+               }
+
+               /* Already disabled */
+               if (!uchan->enabled) {
+                       DBG2("UST channel %s already disabled", channel_name);
                        break;
-               default:
-                       ret = LTTCOMM_UNKNOWN_DOMAIN;
+               }
+
+               ret = ust_app_disable_channel_glb(usess, uchan);
+               if (ret < 0) {
+                       ret = LTTCOMM_UST_DISABLE_FAIL;
                        goto error;
+               }
+
+               uchan->enabled = 0;
+
+               break;
+       }
+       case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN:
+       case LTTNG_DOMAIN_UST_EXEC_NAME:
+       case LTTNG_DOMAIN_UST_PID:
+               ret = LTTCOMM_NOT_IMPLEMENTED;
+               goto error;
+       default:
+               ret = LTTCOMM_UNKNOWN_DOMAIN;
+               goto error;
        }
 
        ret = LTTCOMM_OK;
@@ -2179,69 +2310,44 @@ static int cmd_enable_channel(struct ltt_session *session,
                                goto error;
                        }
 
+                       /* Add channel to all registered applications */
+                       ret = ust_app_create_channel_glb(usess, uchan);
+                       if (ret != 0) {
+                               ret = LTTCOMM_UST_CHAN_FAIL;
+                               goto error;
+                       }
+
                        rcu_read_lock();
                        hashtable_add_unique(usess->domain_global.channels, &uchan->node);
                        rcu_read_unlock();
+
                        DBG2("UST channel %s added to global domain HT", attr->name);
                } else {
-                       ret = LTTCOMM_UST_CHAN_EXIST;
-                       goto error;
-               }
+                       /* If already enabled, everything is OK */
+                       if (uchan->enabled) {
+                               break;
+                       }
 
-               /* Add channel to all registered applications */
-               ret = ust_app_create_channel_all(usess, uchan);
-               if (ret != 0) {
-                       goto error;
+                       ret = ust_app_enable_channel_glb(usess, uchan);
+                       if (ret < 0) {
+                               if (ret != -EEXIST) {
+                                       ret = LTTCOMM_UST_CHAN_ENABLE_FAIL;
+                                       goto error;
+                               } else {
+                                       ret = LTTCOMM_OK;
+                               }
+                       }
                }
 
                uchan->enabled = 1;
 
                break;
        }
+       case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN:
+       case LTTNG_DOMAIN_UST_EXEC_NAME:
        case LTTNG_DOMAIN_UST_PID:
-       {
-               /*
-               int sock;
-               struct ltt_ust_channel *uchan;
-               struct ltt_ust_session *usess;
-               struct ust_app *app;
-
-               usess = trace_ust_get_session_by_pid(&session->ust_session_list,
-                               domain->attr.pid);
-               if (usess == NULL) {
-                       ret = LTTCOMM_UST_CHAN_NOT_FOUND;
-                       goto error;
-               }
-
-               app = ust_app_get_by_pid(domain->attr.pid);
-               if (app == NULL) {
-                       ret = LTTCOMM_APP_NOT_FOUND;
-                       goto error;
-               }
-               sock = app->sock;
-
-               uchan = trace_ust_get_channel_by_name(attr->name, usess);
-               if (uchan == NULL) {
-                       ret = channel_ust_create(usess, attr, sock);
-               } else {
-                       ret = channel_ust_enable(usess, uchan, sock);
-               }
-
-               if (ret != LTTCOMM_OK) {
-                       goto error;
-               }
-
-               ret = copy_ust_channel_to_app(usess, attr, app);
-               if (ret != LTTCOMM_OK) {
-                       goto error;
-               }
-
-               DBG("UST channel %s created for app sock %d with pid %d",
-                               attr->name, app->sock, domain->attr.pid);
-               */
                ret = LTTCOMM_NOT_IMPLEMENTED;
                goto error;
-       }
        default:
                ret = LTTCOMM_UNKNOWN_DOMAIN;
                goto error;
@@ -2265,15 +2371,17 @@ static int cmd_disable_event(struct ltt_session *session, int domain,
        case LTTNG_DOMAIN_KERNEL:
        {
                struct ltt_kernel_channel *kchan;
+               struct ltt_kernel_session *ksess;
 
-               kchan = trace_kernel_get_channel_by_name(channel_name,
-                               session->kernel_session);
+               ksess = session->kernel_session;
+
+               kchan = trace_kernel_get_channel_by_name(channel_name, ksess);
                if (kchan == NULL) {
                        ret = LTTCOMM_KERN_CHAN_NOT_FOUND;
                        goto error;
                }
 
-               ret = event_kernel_disable_tracepoint(session->kernel_session, kchan, event_name);
+               ret = event_kernel_disable_tracepoint(ksess, kchan, event_name);
                if (ret != LTTCOMM_OK) {
                        goto error;
                }
@@ -2282,11 +2390,43 @@ static int cmd_disable_event(struct ltt_session *session, int domain,
                break;
        }
        case LTTNG_DOMAIN_UST:
+       {
+               struct ltt_ust_session *usess;
+               struct ltt_ust_channel *uchan;
+               struct ltt_ust_event *uevent;
+
+               usess = session->ust_session;
+
+               uchan = trace_ust_find_channel_by_name(usess->domain_global.channels,
+                               channel_name);
+               if (uchan == NULL) {
+                       ret = LTTCOMM_UST_CHAN_NOT_FOUND;
+                       goto error;
+               }
+
+               uevent = trace_ust_find_event_by_name(uchan->events, event_name);
+               if (uevent == NULL) {
+                       ret = LTTCOMM_UST_EVENT_NOT_FOUND;
+                       goto error;
+               }
+
+               ret = ust_app_disable_event_glb(usess, uchan, uevent);
+               if (ret < 0) {
+                       ret = LTTCOMM_UST_DISABLE_FAIL;
+                       goto error;
+               }
+
+               uevent->enabled = 0;
+
+               DBG2("Disable UST event %s in channel %s completed", event_name,
+                               channel_name);
+
+               break;
+       }
        case LTTNG_DOMAIN_UST_EXEC_NAME:
        case LTTNG_DOMAIN_UST_PID:
        case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN:
        default:
-               /* TODO: Other UST domains */
                ret = LTTCOMM_NOT_IMPLEMENTED;
                goto error;
        }
@@ -2304,26 +2444,57 @@ static int cmd_disable_event_all(struct ltt_session *session, int domain,
                char *channel_name)
 {
        int ret;
-       struct ltt_kernel_channel *kchan;
 
        switch (domain) {
        case LTTNG_DOMAIN_KERNEL:
-               kchan = trace_kernel_get_channel_by_name(channel_name,
-                               session->kernel_session);
+       {
+               struct ltt_kernel_session *ksess;
+               struct ltt_kernel_channel *kchan;
+
+               ksess = session->kernel_session;
+
+               kchan = trace_kernel_get_channel_by_name(channel_name, ksess);
                if (kchan == NULL) {
                        ret = LTTCOMM_KERN_CHAN_NOT_FOUND;
                        goto error;
                }
 
-               ret = event_kernel_disable_all(session->kernel_session, kchan);
+               ret = event_kernel_disable_all(ksess, kchan);
                if (ret != LTTCOMM_OK) {
                        goto error;
                }
 
                kernel_wait_quiescent(kernel_tracer_fd);
                break;
+       }
+       case LTTNG_DOMAIN_UST:
+       {
+               struct ltt_ust_session *usess;
+               struct ltt_ust_channel *uchan;
+
+               usess = session->ust_session;
+
+               uchan = trace_ust_find_channel_by_name(usess->domain_global.channels,
+                               channel_name);
+               if (uchan == NULL) {
+                       ret = LTTCOMM_UST_CHAN_NOT_FOUND;
+                       goto error;
+               }
+
+               ret = ust_app_disable_all_event_glb(usess, uchan);
+               if (ret < 0) {
+                       ret = LTTCOMM_UST_DISABLE_FAIL;
+                       goto error;
+               }
+
+               DBG2("Disable all UST event in channel %s completed", channel_name);
+
+               break;
+       }
+       case LTTNG_DOMAIN_UST_EXEC_NAME:
+       case LTTNG_DOMAIN_UST_PID:
+       case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN:
        default:
-               /* TODO: Userspace tracing */
                ret = LTTCOMM_NOT_IMPLEMENTED;
                goto error;
        }
@@ -2353,21 +2524,18 @@ static int cmd_add_context(struct ltt_session *session, int domain,
                break;
        case LTTNG_DOMAIN_UST:
        {
-               /*
-               struct ltt_ust_session *usess;
+               struct ltt_ust_session *usess = session->ust_session;
 
-               cds_list_for_each_entry(usess, &session->ust_session_list.head, list) {
-                       ret = context_ust_add(usess, ctx,
-                                       event_name, channel_name, domain);
-                       if (ret != LTTCOMM_OK) {
-                               goto error;
-                       }
+               ret = context_ust_add(usess, domain, ctx, event_name, channel_name);
+               if (ret != LTTCOMM_OK) {
+                       goto error;
                }
                break;
-               */
        }
+       case LTTNG_DOMAIN_UST_EXEC_NAME:
+       case LTTNG_DOMAIN_UST_PID:
+       case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN:
        default:
-               /* TODO: UST other domains */
                ret = LTTCOMM_NOT_IMPLEMENTED;
                goto error;
        }
@@ -2407,8 +2575,10 @@ static int cmd_enable_event(struct ltt_session *session, int domain,
                        ret = channel_kernel_create(session->kernel_session,
                                        attr, kernel_poll_pipe[1]);
                        if (ret != LTTCOMM_OK) {
+                               free(attr);
                                goto error;
                        }
+                       free(attr);
                }
 
                /* Get the newly created kernel channel pointer */
@@ -2431,10 +2601,10 @@ static int cmd_enable_event(struct ltt_session *session, int domain,
        }
        case LTTNG_DOMAIN_UST:
        {
-               struct ltt_ust_channel *uchan;
-               struct ltt_ust_event *uevent;
                struct lttng_channel *attr;
+               struct ltt_ust_channel *uchan;
 
+               /* Get channel from global UST domain */
                uchan = trace_ust_find_channel_by_name(usess->domain_global.channels,
                                channel_name);
                if (uchan == NULL) {
@@ -2444,13 +2614,15 @@ static int cmd_enable_event(struct ltt_session *session, int domain,
                                ret = LTTCOMM_FATAL;
                                goto error;
                        }
+                       snprintf(attr->name, NAME_MAX, "%s", channel_name);
+                       attr->name[NAME_MAX - 1] = '\0';
 
                        /* Use the internal command enable channel */
                        ret = cmd_enable_channel(session, domain, attr);
-                       if (ret < 0) {
+                       if (ret != LTTCOMM_OK) {
+                               free(attr);
                                goto error;
                        }
-
                        free(attr);
 
                        /* Get the newly created channel reference back */
@@ -2463,31 +2635,12 @@ static int cmd_enable_event(struct ltt_session *session, int domain,
                        }
                }
 
-               uevent = trace_ust_find_event_by_name(uchan->events, event->name);
-               if (uevent == NULL) {
-                       uevent = trace_ust_create_event(event);
-                       if (uevent == NULL) {
-                               ret = LTTCOMM_FATAL;
-                               goto error;
-                       }
+               /* At this point, the session and channel exist on the tracer */
 
-               }
-
-               ret = ust_app_create_event_all(usess, uchan, uevent);
-               if (ret < 0) {
-                       ret = LTTCOMM_UST_ENABLE_FAIL;
+               ret = event_ust_enable_tracepoint(usess, domain, uchan, event);
+               if (ret != LTTCOMM_OK) {
                        goto error;
                }
-
-               /* Add ltt ust event to channel */
-               rcu_read_lock();
-               hashtable_add_unique(uchan->events, &uevent->node);
-               rcu_read_unlock();
-
-               uevent->enabled = 1;
-
-               DBG3("UST ltt event %s added to channel %s", uevent->attr.name,
-                               uchan->name);
                break;
        }
        case LTTNG_DOMAIN_UST_EXEC_NAME:
@@ -2524,15 +2677,16 @@ static int cmd_enable_event_all(struct ltt_session *session, int domain,
                        if (ret != LTTCOMM_OK) {
                                goto error;
                        }
-               }
 
-               /* Get the newly created kernel channel pointer */
-               kchan = trace_kernel_get_channel_by_name(channel_name,
-                               session->kernel_session);
-               if (kchan == NULL) {
-                       /* This sould not happen... */
-                       ret = LTTCOMM_FATAL;
-                       goto error;
+                       /* Get the newly created kernel channel pointer */
+                       kchan = trace_kernel_get_channel_by_name(channel_name,
+                                       session->kernel_session);
+                       if (kchan == NULL) {
+                               /* This sould not happen... */
+                               ret = LTTCOMM_FATAL;
+                               goto error;
+                       }
+
                }
 
                switch (event_type) {
@@ -2557,6 +2711,8 @@ static int cmd_enable_event_all(struct ltt_session *session, int domain,
                        ret = LTTCOMM_KERN_ENABLE_FAIL;
                        goto error;
                }
+
+               /* Manage return value */
                if (ret != LTTCOMM_OK) {
                        goto error;
                }
@@ -3109,7 +3265,7 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
                        /* Start the UST consumer daemons */
                        /* 64-bit */
                        pthread_mutex_lock(&ustconsumer64_data.pid_mutex);
-                       if (consumerd64_bindir[0] != '\0' &&
+                       if (consumerd64_path[0] != '\0' &&
                                        ustconsumer64_data.pid == 0 &&
                                        cmd_ctx->lsm->cmd_type != LTTNG_REGISTER_CONSUMER) {
                                pthread_mutex_unlock(&ustconsumer64_data.pid_mutex);
@@ -3125,7 +3281,7 @@ static int process_client_msg(struct command_ctx *cmd_ctx)
                                pthread_mutex_unlock(&ustconsumer64_data.pid_mutex);
                        }
                        /* 32-bit */
-                       if (consumerd32_bindir[0] != '\0' &&
+                       if (consumerd32_path[0] != '\0' &&
                                        ustconsumer32_data.pid == 0 &&
                                        cmd_ctx->lsm->cmd_type != LTTNG_REGISTER_CONSUMER) {
                                pthread_mutex_unlock(&ustconsumer32_data.pid_mutex);
@@ -3565,8 +3721,10 @@ static void usage(void)
        fprintf(stderr, "      --ustconsumerd64-err-sock PATH Specify path for the 64-bit UST consumer error socket\n");
        fprintf(stderr, "      --ustconsumerd32-cmd-sock PATH Specify path for the 32-bit UST consumer command socket\n");
        fprintf(stderr, "      --ustconsumerd64-cmd-sock PATH Specify path for the 64-bit UST consumer command socket\n");
-       fprintf(stderr, "      --ustconsumerd32 PATH          Specify path for the 32-bit UST consumer daemon binary\n");
-       fprintf(stderr, "      --ustconsumerd64 PATH          Specify path for the 64-bit UST consumer daemon binary\n");
+       fprintf(stderr, "      --consumerd32-path PATH     Specify path for the 32-bit UST consumer daemon binary\n");
+       fprintf(stderr, "      --consumerd32-libdir PATH   Specify path for the 32-bit UST consumer daemon libraries\n");
+       fprintf(stderr, "      --consumerd64-path PATH     Specify path for the 64-bit UST consumer daemon binary\n");
+       fprintf(stderr, "      --consumerd64-libdir PATH   Specify path for the 64-bit UST consumer daemon libraries\n");
        fprintf(stderr, "  -d, --daemonize                    Start as a daemon.\n");
        fprintf(stderr, "  -g, --group NAME                   Specify the tracing group name. (default: tracing)\n");
        fprintf(stderr, "  -V, --version                      Show version number.\n");
@@ -3588,12 +3746,14 @@ static int parse_args(int argc, char **argv)
                { "apps-sock", 1, 0, 'a' },
                { "kconsumerd-cmd-sock", 1, 0, 'C' },
                { "kconsumerd-err-sock", 1, 0, 'E' },
-               { "ustconsumerd64", 1, 0, 't' },
-               { "ustconsumerd64-cmd-sock", 1, 0, 'D' },
-               { "ustconsumerd64-err-sock", 1, 0, 'F' },
-               { "ustconsumerd32", 1, 0, 'u' },
                { "ustconsumerd32-cmd-sock", 1, 0, 'G' },
                { "ustconsumerd32-err-sock", 1, 0, 'H' },
+               { "ustconsumerd64-cmd-sock", 1, 0, 'D' },
+               { "ustconsumerd64-err-sock", 1, 0, 'F' },
+               { "consumerd32-path", 1, 0, 'u' },
+               { "consumerd32-libdir", 1, 0, 'U' },
+               { "consumerd64-path", 1, 0, 't' },
+               { "consumerd64-libdir", 1, 0, 'T' },
                { "daemonize", 0, 0, 'd' },
                { "sig-parent", 0, 0, 'S' },
                { "help", 0, 0, 'h' },
@@ -3670,10 +3830,16 @@ static int parse_args(int argc, char **argv)
                        opt_verbose_consumer += 1;
                        break;
                case 'u':
-                       consumerd32_bindir = optarg;
+                       consumerd32_path= optarg;
+                       break;
+               case 'U':
+                       consumerd32_libdir = optarg;
                        break;
                case 't':
-                       consumerd64_bindir = optarg;
+                       consumerd64_path = optarg;
+                       break;
+               case 'T':
+                       consumerd64_libdir = optarg;
                        break;
                default:
                        /* Unknown option or other error.
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