X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;ds=sidebyside;f=src%2Fbin%2Flttng%2Fcommands%2Fcreate.c;h=6c7ab786e5d25fc90ca4b2606ee67a6bb9ff0f49;hb=0e428499a49b2335f4859058739fa2b20f4c410f;hp=3e7074e02bc0e35f611fb2e9347342159a7234d2;hpb=a4b92340642035d1eafeb1eead0ad01f64d2007d;p=lttng-tools.git

diff --git a/src/bin/lttng/commands/create.c b/src/bin/lttng/commands/create.c
index 3e7074e02..6c7ab786e 100644
--- a/src/bin/lttng/commands/create.c
+++ b/src/bin/lttng/commands/create.c
@@ -60,6 +60,13 @@ static struct poptOption long_options[] = {
 	{0, 0, 0, 0, 0, 0, 0}
 };
 
+/*
+ * Please have a look at src/lib/lttng-ctl/lttng-ctl.c for more information on
+ * why this declaration exists and used ONLY in for this command.
+ */
+extern int _lttng_create_session_ext(const char *name, const char *url,
+		const char *datetime);
+
 /*
  * usage
  */
@@ -100,12 +107,12 @@ static void usage(FILE *ofp)
 	fprintf(ofp, "  > file://...\n");
 	fprintf(ofp, "    Local filesystem full path.\n");
 	fprintf(ofp, "\n");
-	fprintf(ofp, "  > net[4|6]://...\n");
+	fprintf(ofp, "  > net[6]://...\n");
 	fprintf(ofp, "    This will use the default network transport layer which is\n");
 	fprintf(ofp, "    TCP for both control (PORT1) and data port (PORT2).\n");
 	fprintf(ofp, "    The default ports are respectively 5342 and 5343.\n");
 	fprintf(ofp, "\n");
-	fprintf(ofp, "  > tcp[4|6]://...\n");
+	fprintf(ofp, "  > tcp[6]://...\n");
 	fprintf(ofp, "    Can only be used with -C and -D together\n");
 	fprintf(ofp, "\n");
 	fprintf(ofp, "NOTE: IPv6 address MUST be enclosed in brackets '[]' (rfc2732)\n");
@@ -245,8 +252,9 @@ error:
 static int create_session(void)
 {
 	int ret;
-	char *session_name, *traces_path = NULL, *alloc_path = NULL;
+	char *session_name = NULL, *traces_path = NULL, *alloc_path = NULL;
 	char *alloc_url = NULL, *url = NULL, datetime[16];
+	char session_name_date[NAME_MAX], *print_str_url = NULL;
 	time_t rawtime;
 	struct tm *timeinfo;
 
@@ -257,18 +265,35 @@ static int create_session(void)
 
 	/* Auto session name creation */
 	if (opt_session_name == NULL) {
-		ret = asprintf(&session_name, DEFAULT_SESSION_NAME "%s", datetime);
+		ret = snprintf(session_name_date, sizeof(session_name_date),
+				DEFAULT_SESSION_NAME "-%s", datetime);
 		if (ret < 0) {
-			PERROR("asprintf session name");
+			PERROR("snprintf session name");
 			goto error;
 		}
-		DBG("Auto session name set to %s", session_name);
+		session_name = session_name_date;
+		DBG("Auto session name set to %s", session_name_date);
 	} else {
+		if (strncmp(opt_session_name, DEFAULT_SESSION_NAME,
+					strlen(DEFAULT_SESSION_NAME)) == 0 &&
+				strlen(opt_session_name) == strlen(DEFAULT_SESSION_NAME)) {
+			ERR("%s is a reserved keyword for default session(s)",
+					DEFAULT_SESSION_NAME);
+			ret = CMD_ERROR;
+			goto error;
+		}
 		session_name = opt_session_name;
+		ret = snprintf(session_name_date, sizeof(session_name_date),
+				"%s-%s", session_name, datetime);
+		if (ret < 0) {
+			PERROR("snprintf session name");
+			goto error;
+		}
 	}
 
 	if (opt_no_consumer) {
 		url = NULL;
+		print_str_url = "";
 	} else if (opt_output_path != NULL) {
 		traces_path = utils_expand_path(opt_output_path);
 		if (traces_path == NULL) {
@@ -285,10 +310,10 @@ static int create_session(void)
 		}
 		/* URL to use in the lttng_create_session() call */
 		url = alloc_url;
-		MSG("Trace(s) output set to %s", traces_path);
+		print_str_url = traces_path;
 	} else if (opt_url) { /* Handling URL (-U opt) */
 		url = opt_url;
-		MSG("Trace(s) output set to %s", url);
+		print_str_url = url;
 	} else if (opt_ctrl_url == NULL && opt_data_url == NULL) {
 		/* Auto output path */
 		alloc_path = config_get_default_path();
@@ -300,8 +325,9 @@ static int create_session(void)
 		}
 		alloc_path = strdup(alloc_path);
 
-		ret = asprintf(&alloc_url, "file://%s/" DEFAULT_TRACE_DIR_NAME,
-				alloc_path);
+		ret = asprintf(&alloc_url,
+				"file://%s/" DEFAULT_TRACE_DIR_NAME "/%s",
+				alloc_path, session_name_date);
 		if (ret < 0) {
 			PERROR("asprintf trace dir name");
 			ret = CMD_FATAL;
@@ -309,27 +335,26 @@ static int create_session(void)
 		}
 
 		url = alloc_url;
-		MSG("Trace(s) output set to %s", alloc_url + strlen("file://"));
+		print_str_url = alloc_url + strlen("file://");
 	}
 
-	ret = lttng_create_session(session_name, url);
+	ret = _lttng_create_session_ext(session_name, url, datetime);
 	if (ret < 0) {
 		/* Don't set ret so lttng can interpret the sessiond error. */
 		switch (-ret) {
-		case LTTCOMM_EXIST_SESS:
+		case LTTNG_ERR_EXIST_SESS:
 			WARN("Session %s already exists", session_name);
 			break;
 		}
 		goto error;
 	}
 
-	if (opt_session_name == NULL) {
-		MSG("Session created with default name %s", session_name);
-	} else {
-		MSG("Session %s created.", session_name);
+	MSG("Session %s created.", session_name);
+	if (print_str_url) {
+		MSG("Traces will be written in %s", print_str_url);
 	}
 
-	if (opt_ctrl_url || opt_data_url) {
+	if (opt_ctrl_url && opt_data_url) {
 		/* Setting up control URI (-C or/and -D opt) */
 		ret = set_consumer_url(session_name, opt_ctrl_url, opt_data_url);
 		if (ret < 0) {
@@ -340,6 +365,11 @@ static int create_session(void)
 		if (ret < 0) {
 			goto error;
 		}
+	} else if ((!opt_ctrl_url && opt_data_url) ||
+			(opt_ctrl_url && !opt_data_url)) {
+		ERR("You need both control and data URL.");
+		ret = CMD_ERROR;
+		goto error;
 	}
 
 	if (opt_disable_consumer && !opt_no_consumer) {
@@ -356,20 +386,13 @@ static int create_session(void)
 		goto error;
 	}
 
+
 	ret = CMD_SUCCESS;
 
 error:
-	if (opt_session_name == NULL) {
-		free(session_name);
-	}
-
-	if (alloc_url) {
-		free(alloc_url);
-	}
-
-	if (traces_path) {
-		free(traces_path);
-	}
+	free(alloc_url);
+	free(traces_path);
+	free(alloc_path);
 
 	if (ret < 0) {
 		ERR("%s", lttng_strerror(ret));