X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fcmd.c;h=201cbd183f8796f0bf716546562f31fd6b80b9b9;hp=9362833c931fcb9fdcd5f9a82660e7260c24370c;hb=6ce228753245961753ae3c81bfb7268433b712b4;hpb=804c90a84626aa4ccc82ab1821e40ff6e257f06c

diff --git a/src/bin/lttng-sessiond/cmd.c b/src/bin/lttng-sessiond/cmd.c
index 9362833c9..201cbd183 100644
--- a/src/bin/lttng-sessiond/cmd.c
+++ b/src/bin/lttng-sessiond/cmd.c
@@ -758,12 +758,15 @@ static int add_uri_to_consumer(struct consumer_output *consumer,
 		DBG2("Setting trace directory path from URI to %s", uri->dst.path);
 		memset(consumer->dst.trace_path, 0,
 				sizeof(consumer->dst.trace_path));
-		strncpy(consumer->dst.trace_path, uri->dst.path,
-				sizeof(consumer->dst.trace_path));
+		/* Explicit length checks for strcpy and strcat. */
+		if (strlen(uri->dst.path) + strlen(default_trace_dir)
+				>= sizeof(consumer->dst.trace_path)) {
+			ret = LTTNG_ERR_FATAL;
+			goto error;
+		}
+		strcpy(consumer->dst.trace_path, uri->dst.path);
 		/* Append default trace dir */
-		strncat(consumer->dst.trace_path, default_trace_dir,
-				sizeof(consumer->dst.trace_path) -
-				strlen(consumer->dst.trace_path) - 1);
+		strcat(consumer->dst.trace_path, default_trace_dir);
 		/* Flag consumer as local. */
 		consumer->type = CONSUMER_DST_LOCAL;
 		break;
@@ -1810,7 +1813,7 @@ static int _cmd_enable_event(struct ltt_session *session,
 		int wpipe, bool internal_event)
 {
 	int ret, channel_created = 0;
-	struct lttng_channel *attr;
+	struct lttng_channel *attr = NULL;
 
 	assert(session);
 	assert(event);
@@ -1853,15 +1856,16 @@ static int _cmd_enable_event(struct ltt_session *session,
 				ret = LTTNG_ERR_FATAL;
 				goto error;
 			}
-			strncpy(attr->name, channel_name, sizeof(attr->name));
+			if (lttng_strncpy(attr->name, channel_name,
+					sizeof(attr->name))) {
+				ret = LTTNG_ERR_INVALID;
+				goto error;
+			}
 
 			ret = cmd_enable_channel(session, domain, attr, wpipe);
 			if (ret != LTTNG_OK) {
-				free(attr);
 				goto error;
 			}
-			free(attr);
-
 			channel_created = 1;
 		}
 
@@ -1990,14 +1994,16 @@ static int _cmd_enable_event(struct ltt_session *session,
 				ret = LTTNG_ERR_FATAL;
 				goto error;
 			}
-			strncpy(attr->name, channel_name, sizeof(attr->name));
+			if (lttng_strncpy(attr->name, channel_name,
+					sizeof(attr->name))) {
+				ret = LTTNG_ERR_INVALID;
+				goto error;
+			}
 
 			ret = cmd_enable_channel(session, domain, attr, wpipe);
 			if (ret != LTTNG_OK) {
-				free(attr);
 				goto error;
 			}
-			free(attr);
 
 			/* Get the newly created channel reference back */
 			uchan = trace_ust_find_channel_by_name(
@@ -2172,6 +2178,7 @@ error:
 	free(filter_expression);
 	free(filter);
 	free(exclusion);
+	free(attr);
 	rcu_read_unlock();
 	return ret;
 }
@@ -3349,10 +3356,18 @@ ssize_t cmd_snapshot_list_outputs(struct ltt_session *session,
 		assert(output->consumer);
 		list[idx].id = output->id;
 		list[idx].max_size = output->max_size;
-		strncpy(list[idx].name, output->name, sizeof(list[idx].name));
+		if (lttng_strncpy(list[idx].name, output->name,
+				sizeof(list[idx].name))) {
+			ret = -LTTNG_ERR_INVALID;
+			goto error;
+		}
 		if (output->consumer->type == CONSUMER_DST_LOCAL) {
-			strncpy(list[idx].ctrl_url, output->consumer->dst.trace_path,
-					sizeof(list[idx].ctrl_url));
+			if (lttng_strncpy(list[idx].ctrl_url,
+					output->consumer->dst.trace_path,
+					sizeof(list[idx].ctrl_url))) {
+				ret = -LTTNG_ERR_INVALID;
+				goto error;
+			}
 		} else {
 			/* Control URI. */
 			ret = uri_to_str_url(&output->consumer->dst.net.control,
@@ -3593,13 +3608,6 @@ static int record_kernel_snapshot(struct ltt_kernel_session *ksess,
 	assert(output);
 	assert(session);
 
-	/* Get the datetime for the snapshot output directory. */
-	ret = utils_get_current_time_str("%Y%m%d-%H%M%S", output->datetime,
-			sizeof(output->datetime));
-	if (!ret) {
-		ret = LTTNG_ERR_INVALID;
-		goto error;
-	}
 
 	/*
 	 * Copy kernel session sockets so we can communicate with the right
@@ -3647,14 +3655,6 @@ static int record_ust_snapshot(struct ltt_ust_session *usess,
 	assert(output);
 	assert(session);
 
-	/* Get the datetime for the snapshot output directory. */
-	ret = utils_get_current_time_str("%Y%m%d-%H%M%S", output->datetime,
-			sizeof(output->datetime));
-	if (!ret) {
-		ret = LTTNG_ERR_INVALID;
-		goto error;
-	}
-
 	/*
 	 * Copy UST session sockets so we can communicate with the right
 	 * consumer for the snapshot record command.
@@ -3676,9 +3676,6 @@ static int record_ust_snapshot(struct ltt_ust_session *usess,
 		case EINVAL:
 			ret = LTTNG_ERR_INVALID;
 			break;
-		case ENODATA:
-			ret = LTTNG_ERR_SNAPSHOT_NODATA;
-			break;
 		default:
 			ret = LTTNG_ERR_SNAPSHOT_FAIL;
 			break;
@@ -3796,12 +3793,21 @@ int cmd_snapshot_record(struct ltt_session *session,
 	unsigned int use_tmp_output = 0;
 	struct snapshot_output tmp_output;
 	unsigned int snapshot_success = 0;
+	char datetime[16];
 
 	assert(session);
 	assert(output);
 
 	DBG("Cmd snapshot record for session %s", session->name);
 
+	/* Get the datetime for the snapshot output directory. */
+	ret = utils_get_current_time_str("%Y%m%d-%H%M%S", datetime,
+			sizeof(datetime));
+	if (!ret) {
+		ret = LTTNG_ERR_INVALID;
+		goto error;
+	}
+
 	/*
 	 * Permission denied to create an output if the session is not
 	 * set in no output mode.
@@ -3832,6 +3838,9 @@ int cmd_snapshot_record(struct ltt_session *session,
 		}
 		/* Use the global session count for the temporary snapshot. */
 		tmp_output.nb_snapshot = session->snapshot.nb_snapshot;
+
+		/* Use the global datetime */
+		memcpy(tmp_output.datetime, datetime, sizeof(datetime));
 		use_tmp_output = 1;
 	}
 
@@ -3899,6 +3908,7 @@ int cmd_snapshot_record(struct ltt_session *session,
 			}
 
 			tmp_output.nb_snapshot = session->snapshot.nb_snapshot;
+			memcpy(tmp_output.datetime, datetime, sizeof(datetime));
 
 			if (session->kernel_session) {
 				ret = record_kernel_snapshot(session->kernel_session,