X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng%2Fcommands%2Fcreate.c;h=f60fe619e223e0db9c5686f0a62a5c73362bd02d;hp=34754c7ca139f40077b6ea6e4cb6d81852257e88;hb=ae8564917fa3cb3497ec17951d8ac0ee28de9c81;hpb=bbccc3d2cb9f83aecf00a207de9eef68c766bf9c

diff --git a/src/bin/lttng/commands/create.c b/src/bin/lttng/commands/create.c
index 34754c7ca..f60fe619e 100644
--- a/src/bin/lttng/commands/create.c
+++ b/src/bin/lttng/commands/create.c
@@ -52,21 +52,22 @@ static void usage(FILE *ofp)
 {
 	fprintf(ofp, "usage: lttng create [options] [NAME]\n");
 	fprintf(ofp, "\n");
+	fprintf(ofp, "  The default NAME is 'auto-yyyymmdd-hhmmss'\n");
 	fprintf(ofp, "  -h, --help           Show this help\n");
-	fprintf(ofp, "      --list-options       Simple listing of options\n");
+	fprintf(ofp, "      --list-options   Simple listing of options\n");
 	fprintf(ofp, "  -o, --output PATH    Specify output path for traces\n");
 	fprintf(ofp, "\n");
 }
 
 /*
- *  create_session
+ *  Create a tracing session.
+ *  If no name is specified, a default name is generated.
  *
- *  Create a tracing session. If no name specified, a default name will be
- *  generated.
+ *  Returns one of the CMD_* result constants.
  */
 static int create_session()
 {
-	int ret, have_name = 0;
+	int ret;
 	char datetime[16];
 	char *session_name, *traces_path = NULL, *alloc_path = NULL;
 	time_t rawtime;
@@ -79,37 +80,32 @@ static int create_session()
 
 	/* Auto session name creation */
 	if (opt_session_name == NULL) {
-		ret = asprintf(&session_name, "auto-%s", datetime);
+		ret = asprintf(&session_name, "auto");
 		if (ret < 0) {
 			perror("asprintf session name");
+			ret = CMD_ERROR;
 			goto error;
 		}
 		DBG("Auto session name set to %s", session_name);
 	} else {
 		session_name = opt_session_name;
-		have_name = 1;
 	}
 
 	/* Auto output path */
 	if (opt_output_path == NULL) {
 		alloc_path = strdup(config_get_default_path());
 		if (alloc_path == NULL) {
-			ERR("Home path not found.\n \
-				 Please specify an output path using -o, --output PATH");
+			ERR("Home path not found.\n"
+				"Please specify an output path using -o, --output PATH\n");
 			ret = CMD_FATAL;
 			goto error;
 		}
 
-		if (have_name) {
-			ret = asprintf(&traces_path, "%s/" DEFAULT_TRACE_DIR_NAME
-					"/%s-%s", alloc_path, session_name, datetime);
-		} else {
-			ret = asprintf(&traces_path, "%s/" DEFAULT_TRACE_DIR_NAME
-					"/%s", alloc_path, session_name);
-		}
-
+		ret = asprintf(&traces_path, "%s/" DEFAULT_TRACE_DIR_NAME "/%s-%s",
+				alloc_path, session_name, datetime);
 		if (ret < 0) {
 			perror("asprintf trace dir name");
+			ret = CMD_ERROR;
 			goto error;
 		}
 	} else {
@@ -118,15 +114,14 @@ static int create_session()
 
 	ret = lttng_create_session(session_name, traces_path);
 	if (ret < 0) {
+		/* Don't set ret so lttng can interpret the sessiond error. */
 		goto error;
 	}
 
 	/* Init lttng session config */
 	ret = config_init(session_name);
 	if (ret < 0) {
-		if (ret == -1) {
-			ret = CMD_ERROR;
-		}
+		ret = CMD_ERROR;
 		goto error;
 	}
 
@@ -136,6 +131,10 @@ static int create_session()
 	ret = CMD_SUCCESS;
 
 error:
+	if (opt_session_name == NULL) {
+		free(session_name);
+	}
+
 	if (alloc_path) {
 		free(alloc_path);
 	}
@@ -147,9 +146,9 @@ error:
 }
 
 /*
- *  cmd_create
- *
  *  The 'create <options>' first level command
+ *
+ *  Returns one of the CMD_* result constants.
  */
 int cmd_create(int argc, const char **argv)
 {
@@ -162,11 +161,10 @@ int cmd_create(int argc, const char **argv)
 	while ((opt = poptGetNextOpt(pc)) != -1) {
 		switch (opt) {
 		case OPT_HELP:
-			usage(stderr);
+			usage(stdout);
 			goto end;
 		case OPT_LIST_OPTIONS:
 			list_cmd_options(stdout, long_options);
-			ret = CMD_SUCCESS;
 			goto end;
 		default:
 			usage(stderr);
@@ -180,5 +178,6 @@ int cmd_create(int argc, const char **argv)
 	ret = create_session();
 
 end:
+	poptFreeContext(pc);
 	return ret;
 }