/*
* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; only version 2
- * of the License.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2 only,
+ * as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#define _GNU_SOURCE
+#define _LGPL_SOURCE
#include <popt.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
+#include <assert.h>
+
+#include <common/mi-lttng.h>
#include "../command.h"
OPT_LIST_OPTIONS,
};
+static struct mi_writer *writer;
+
static struct poptOption long_options[] = {
/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
{"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
*/
static void usage(FILE *ofp)
{
- fprintf(ofp, "usage: lttng set-session NAME\n");
+ fprintf(ofp, "usage: lttng set-session NAME [OPTIONS]\n");
fprintf(ofp, "\n");
fprintf(ofp, "Options:\n");
fprintf(ofp, " -h, --help Show this help\n");
fprintf(ofp, "\n");
}
+/*
+ * Print the necessary mi for a session and name.
+ */
+static int mi_print(char *session_name)
+{
+ int ret;
+
+ assert(writer);
+ assert(session_name);
+
+ /*
+ * Open a sessions element
+ * This is purely for validation purpose
+ */
+ ret = mi_lttng_sessions_open(writer);
+ if (ret) {
+ goto end;
+ }
+
+ /* Open a session element */
+ ret = mi_lttng_writer_open_element(writer, config_element_session);
+ if (ret) {
+ goto end;
+ }
+
+ /* Session name */
+ ret = mi_lttng_writer_write_element_string(writer , config_element_name,
+ session_name);
+ if (ret) {
+ goto end;
+ }
+
+ /* Close session and sessions element */
+ ret = mi_lttng_close_multi_element(writer, 2);
+ if (ret) {
+ goto end;
+ }
+end:
+ return ret;
+}
+
/*
* set_session
*/
{
int ret = CMD_SUCCESS;
+ if (opt_session_name && strlen(opt_session_name) > NAME_MAX) {
+ ERR("Session name too long. Length must be lower or equal to %d",
+ NAME_MAX);
+ ret = CMD_ERROR;
+ goto error;
+ }
+
ret = config_init(opt_session_name);
if (ret < 0) {
ERR("Unable to set session name");
}
MSG("Session set to %s", opt_session_name);
+ if (lttng_opt_mi) {
+ ret = mi_print(opt_session_name);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto error;
+ }
+ }
+
ret = CMD_SUCCESS;
error:
*/
int cmd_set_session(int argc, const char **argv)
{
- int opt, ret = CMD_SUCCESS;
+ int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1;
static poptContext pc;
pc = poptGetContext(NULL, argc, argv, long_options, 0);
while ((opt = poptGetNextOpt(pc)) != -1) {
switch (opt) {
case OPT_HELP:
- usage(stderr);
- ret = CMD_SUCCESS;
+ usage(stdout);
goto end;
case OPT_LIST_OPTIONS:
list_cmd_options(stdout, long_options);
- ret = CMD_SUCCESS;
goto end;
default:
usage(stderr);
if (opt_session_name == NULL) {
ERR("Missing session name");
usage(stderr);
+ ret = CMD_ERROR;
goto end;
}
- ret = set_session();
+ /* Mi check */
+ if (lttng_opt_mi) {
+ writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
+ if (!writer) {
+ ret = -LTTNG_ERR_NOMEM;
+ goto end;
+ }
+
+ /* Open command element */
+ ret = mi_lttng_writer_command_open(writer,
+ mi_lttng_element_command_set_session);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Open output element */
+ ret = mi_lttng_writer_open_element(writer,
+ mi_lttng_element_command_output);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+ }
+
+ command_ret = set_session();
+ if (command_ret) {
+ success = 0;
+ }
+
+ /* Mi closing */
+ if (lttng_opt_mi) {
+ /* Close output element */
+ ret = mi_lttng_writer_close_element(writer);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Success ? */
+ ret = mi_lttng_writer_write_element_bool(writer,
+ mi_lttng_element_command_success, success);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Command element close */
+ ret = mi_lttng_writer_command_close(writer);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+ }
end:
+ /* Mi clean-up */
+ if (writer && mi_lttng_writer_destroy(writer)) {
+ /* Preserve original error code */
+ ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL;
+ }
+
+ /* Overwrite ret if an error occured during set_session() */
+ ret = command_ret ? command_ret : ret;
+
+ poptFreeContext(pc);
return ret;
}
projects / lttng-tools.git / blobdiff