X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fmain.c;h=2cf749a50b6257ac7acd3926073ebd5e66897dc3;hb=3628d5bd420ccb6e7937506a2dbadb95bd3d2d0b;hp=1ee6f4a9f658f4cc547860ce5ac9f91a85c6e878;hpb=04d210092c6c14203094d2265709eec5ee6056bd;p=lttng-tools.git

diff --git a/src/bin/lttng-sessiond/main.c b/src/bin/lttng-sessiond/main.c
index 1ee6f4a9f..2cf749a50 100644
--- a/src/bin/lttng-sessiond/main.c
+++ b/src/bin/lttng-sessiond/main.c
@@ -999,12 +999,14 @@ static void *thread_manage_kernel(void *data)
 			update_poll_flag = 0;
 		}
 
-		DBG("Thread kernel polling on %d fds", LTTNG_POLL_GETNB(&events));
+		DBG("Thread kernel polling");
 
 		/* Poll infinite value of time */
 	restart:
 		health_poll_entry();
 		ret = lttng_poll_wait(&events, -1);
+		DBG("Thread kernel return from poll on %d fds",
+				LTTNG_POLL_GETNB(&events));
 		health_poll_exit();
 		if (ret < 0) {
 			/*
@@ -1030,6 +1032,11 @@ static void *thread_manage_kernel(void *data)
 
 			health_code_update();
 
+			if (!revents) {
+				/* No activity for this FD (poll implementation). */
+				continue;
+			}
+
 			/* Thread quit pipe has been closed. Killing thread. */
 			ret = sessiond_check_thread_quit_pipe(pollfd, revents);
 			if (ret) {
@@ -1113,7 +1120,7 @@ static void signal_consumer_condition(struct consumer_data *data, int state)
  */
 static void *thread_manage_consumer(void *data)
 {
-	int sock = -1, i, ret, pollfd, err = -1;
+	int sock = -1, i, ret, pollfd, err = -1, should_quit = 0;
 	uint32_t revents, nb_fd;
 	enum lttcomm_return_code code;
 	struct lttng_poll_event events;
@@ -1175,6 +1182,11 @@ restart:
 
 		health_code_update();
 
+		if (!revents) {
+			/* No activity for this FD (poll implementation). */
+			continue;
+		}
+
 		/* Thread quit pipe has been closed. Killing thread. */
 		ret = sessiond_check_thread_quit_pipe(pollfd, revents);
 		if (ret) {
@@ -1271,6 +1283,15 @@ restart:
 	/* Infinite blocking call, waiting for transmission */
 restart_poll:
 	while (1) {
+		health_code_update();
+
+		/* Exit the thread because the thread quit pipe has been triggered. */
+		if (should_quit) {
+			/* Not a health error. */
+			err = 0;
+			goto exit;
+		}
+
 		health_poll_entry();
 		ret = lttng_poll_wait(&events, -1);
 		health_poll_exit();
@@ -1293,13 +1314,18 @@ restart_poll:
 
 			health_code_update();
 
-			/* Thread quit pipe has been closed. Killing thread. */
-			ret = sessiond_check_thread_quit_pipe(pollfd, revents);
-			if (ret) {
-				err = 0;
-				goto exit;
+			if (!revents) {
+				/* No activity for this FD (poll implementation). */
+				continue;
 			}
 
+			/*
+			 * Thread quit pipe has been triggered, flag that we should stop
+			 * but continue the current loop to handle potential data from
+			 * consumer.
+			 */
+			should_quit = sessiond_check_thread_quit_pipe(pollfd, revents);
+
 			if (pollfd == sock) {
 				/* Event on the consumerd socket */
 				if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) {
@@ -1327,11 +1353,8 @@ restart_poll:
 					ERR("Handling metadata request");
 					goto error;
 				}
-				break;
-			} else {
-				ERR("Unknown pollfd");
-				goto error;
 			}
+			/* No need for an else branch all FDs are tested prior. */
 		}
 		health_code_update();
 	}
@@ -1446,12 +1469,14 @@ static void *thread_manage_apps(void *data)
 	health_code_update();
 
 	while (1) {
-		DBG("Apps thread polling on %d fds", LTTNG_POLL_GETNB(&events));
+		DBG("Apps thread polling");
 
 		/* Inifinite blocking call, waiting for transmission */
 	restart:
 		health_poll_entry();
 		ret = lttng_poll_wait(&events, -1);
+		DBG("Apps thread return from poll on %d fds",
+				LTTNG_POLL_GETNB(&events));
 		health_poll_exit();
 		if (ret < 0) {
 			/*
@@ -1472,6 +1497,11 @@ static void *thread_manage_apps(void *data)
 
 			health_code_update();
 
+			if (!revents) {
+				/* No activity for this FD (poll implementation). */
+				continue;
+			}
+
 			/* Thread quit pipe has been closed. Killing thread. */
 			ret = sessiond_check_thread_quit_pipe(pollfd, revents);
 			if (ret) {
@@ -1650,6 +1680,11 @@ static void sanitize_wait_queue(struct ust_reg_wait_queue *wait_queue)
 		uint32_t revents = LTTNG_POLL_GETEV(&events, i);
 		int pollfd = LTTNG_POLL_GETFD(&events, i);
 
+		if (!revents) {
+			/* No activity for this FD (poll implementation). */
+			continue;
+		}
+
 		cds_list_for_each_entry_safe(wait_node, tmp_wait_node,
 				&wait_queue->head, head) {
 			if (pollfd == wait_node->app->sock &&
@@ -1989,6 +2024,11 @@ static void *thread_registration_apps(void *data)
 			revents = LTTNG_POLL_GETEV(&events, i);
 			pollfd = LTTNG_POLL_GETFD(&events, i);
 
+			if (!revents) {
+				/* No activity for this FD (poll implementation). */
+				continue;
+			}
+
 			/* Thread quit pipe has been closed. Killing thread. */
 			ret = sessiond_check_thread_quit_pipe(pollfd, revents);
 			if (ret) {
@@ -3203,12 +3243,14 @@ skip_domain:
 
 			if (bytecode_len > LTTNG_FILTER_MAX_LEN) {
 				ret = LTTNG_ERR_FILTER_INVAL;
+				free(filter_expression);
 				free(exclusion);
 				goto error;
 			}
 
 			bytecode = zmalloc(bytecode_len);
 			if (!bytecode) {
+				free(filter_expression);
 				free(exclusion);
 				ret = LTTNG_ERR_FILTER_NOMEM;
 				goto error;
@@ -3220,6 +3262,7 @@ skip_domain:
 			if (ret <= 0) {
 				DBG("Nothing recv() from client car len data... continuing");
 				*sock_error = 1;
+				free(filter_expression);
 				free(bytecode);
 				free(exclusion);
 				ret = LTTNG_ERR_FILTER_INVAL;
@@ -3227,6 +3270,7 @@ skip_domain:
 			}
 
 			if ((bytecode->len + sizeof(*bytecode)) != bytecode_len) {
+				free(filter_expression);
 				free(bytecode);
 				free(exclusion);
 				ret = LTTNG_ERR_FILTER_INVAL;
@@ -3349,31 +3393,12 @@ skip_domain:
 			goto error;
 		}
 
-		ret = cmd_set_consumer_uri(cmd_ctx->lsm->domain.type, cmd_ctx->session,
-				nb_uri, uris);
+		ret = cmd_set_consumer_uri(cmd_ctx->session, nb_uri, uris);
+		free(uris);
 		if (ret != LTTNG_OK) {
-			free(uris);
 			goto error;
 		}
 
-		/*
-		 * XXX: 0 means that this URI should be applied on the session. Should
-		 * be a DOMAIN enuam.
-		 */
-		if (cmd_ctx->lsm->domain.type == 0) {
-			/* Add the URI for the UST session if a consumer is present. */
-			if (cmd_ctx->session->ust_session &&
-					cmd_ctx->session->ust_session->consumer) {
-				ret = cmd_set_consumer_uri(LTTNG_DOMAIN_UST, cmd_ctx->session,
-						nb_uri, uris);
-			} else if (cmd_ctx->session->kernel_session &&
-					cmd_ctx->session->kernel_session->consumer) {
-				ret = cmd_set_consumer_uri(LTTNG_DOMAIN_KERNEL,
-						cmd_ctx->session, nb_uri, uris);
-			}
-		}
-
-		free(uris);
 
 		break;
 	}
@@ -3466,7 +3491,7 @@ skip_domain:
 	case LTTNG_LIST_CHANNELS:
 	{
 		int nb_chan;
-		struct lttng_channel *channels;
+		struct lttng_channel *channels = NULL;
 
 		nb_chan = cmd_list_channels(cmd_ctx->lsm->domain.type,
 				cmd_ctx->session, &channels);
@@ -3840,6 +3865,11 @@ restart:
 			revents = LTTNG_POLL_GETEV(&events, i);
 			pollfd = LTTNG_POLL_GETFD(&events, i);
 
+			if (!revents) {
+				/* No activity for this FD (poll implementation). */
+				continue;
+			}
+
 			/* Thread quit pipe has been closed. Killing thread. */
 			ret = sessiond_check_thread_quit_pipe(pollfd, revents);
 			if (ret) {
@@ -4012,6 +4042,11 @@ static void *thread_manage_clients(void *data)
 
 			health_code_update();
 
+			if (!revents) {
+				/* No activity for this FD (poll implementation). */
+				continue;
+			}
+
 			/* Thread quit pipe has been closed. Killing thread. */
 			ret = sessiond_check_thread_quit_pipe(pollfd, revents);
 			if (ret) {
@@ -4206,7 +4241,7 @@ static void usage(void)
 	fprintf(stderr, "      --verbose-consumer             Verbose mode for consumer. Activate DBG() macro.\n");
 	fprintf(stderr, "      --no-kernel                    Disable kernel tracer\n");
 	fprintf(stderr, "      --jul-tcp-port                 JUL application registration TCP port\n");
-	fprintf(stderr, "  -f  --config                       Load daemon configuration file\n");
+	fprintf(stderr, "  -f  --config PATH                  Load daemon configuration file\n");
 	fprintf(stderr, "  -l  --load PATH                    Load session configuration\n");
 	fprintf(stderr, "      --kmod-probes                  Specify kernel module probes to load\n");
 }
@@ -4221,6 +4256,17 @@ static int set_option(int opt, const char *arg, const char *optname)
 {
 	int ret = 0;
 
+	if (arg && arg[0] == '\0') {
+		/*
+		 * This only happens if the value is read from daemon config
+		 * file. This means the option requires an argument and the
+		 * configuration file contains a line such as:
+		 * my_option =
+		 */
+		ret = -EINVAL;
+		goto end;
+	}
+
 	switch (opt) {
 	case 0:
 		fprintf(stderr, "option %s", optname);
@@ -4404,6 +4450,23 @@ static int set_option(int opt, const char *arg, const char *optname)
 		ret = -1;
 	}
 
+end:
+	if (ret == -EINVAL) {
+		const char *opt_name = "unknown";
+		int i;
+
+		for (i = 0; i < sizeof(long_options) / sizeof(struct option);
+			i++) {
+			if (opt == long_options[i].val) {
+				opt_name = long_options[i].name;
+				break;
+			}
+		}
+
+		WARN("Invalid argument provided for option \"%s\", using default value.",
+			opt_name);
+	}
+
 	return ret;
 }
 
@@ -5034,6 +5097,10 @@ int main(int argc, char **argv)
 
 	if (is_root) {
 		rundir = strdup(DEFAULT_LTTNG_RUNDIR);
+		if (!rundir) {
+			ret = -ENOMEM;
+			goto error;
+		}
 
 		/* Create global run dir with root access */
 		ret = create_lttng_rundir(rundir);