--- /dev/null
+/*
+ * Copyright (C) 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ */
+
+#define _LGPL_SOURCE
+#include <inttypes.h>
+#include <popt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <common/mi-lttng.h>
+
+#include "../command.h"
+#include <lttng/lttng.h>
+
+static char *opt_output_path;
+static bool opt_force;
+static bool opt_save_all;
+static struct mi_writer *writer;
+
+#ifdef LTTNG_EMBED_HELP
+static const char help_msg[] =
+#include <lttng-save.1.h>
+;
+#endif
+
+enum {
+ OPT_HELP = 1,
+ OPT_ALL,
+ OPT_FORCE,
+ OPT_LIST_OPTIONS,
+};
+
+static struct poptOption save_opts[] = {
+ /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
+ {"help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL},
+ {"all", 'a', POPT_ARG_NONE, NULL, OPT_ALL, NULL, NULL},
+ {"output-path", 'o', POPT_ARG_STRING, &opt_output_path, 0, NULL, NULL},
+ {"force", 'f', POPT_ARG_NONE, NULL, OPT_FORCE, NULL, NULL},
+ {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
+ {0, 0, 0, 0, 0, 0, 0}
+};
+
+static int mi_partial_session(const char *session_name)
+{
+ int ret;
+ LTTNG_ASSERT(writer);
+ LTTNG_ASSERT(session_name);
+
+ /* Open session element */
+ ret = mi_lttng_writer_open_element(writer, config_element_session);
+ if (ret) {
+ goto end;
+ }
+
+ ret = mi_lttng_writer_write_element_string(writer, config_element_name,
+ session_name);
+ if (ret) {
+ goto end;
+ }
+
+ /* Closing session element */
+ ret = mi_lttng_writer_close_element(writer);
+end:
+ return ret;
+}
+
+/*
+ * Mi print of save command
+ */
+static int mi_save_print(const char *session_name)
+{
+ int ret;
+ LTTNG_ASSERT(writer);
+
+ if (opt_save_all) {
+ /* We use a wildcard to represent all sessions */
+ session_name = "*";
+ }
+
+ /* Print save element */
+ ret = mi_lttng_writer_open_element(writer, mi_lttng_element_save);
+ if (ret) {
+ goto end;
+ }
+
+ /* Print session element */
+ ret = mi_partial_session(session_name);
+ if (ret) {
+ goto end;
+ }
+
+ /* Path element */
+ if (opt_output_path) {
+ ret = mi_lttng_writer_write_element_string(writer, config_element_path,
+ opt_output_path);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ /* Close save element */
+ ret = mi_lttng_writer_close_element(writer);
+end:
+ return ret;
+}
+
+/*
+ * The 'save <options>' first level command
+ */
+int cmd_save(int argc, const char **argv)
+{
+ int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success;
+ int opt;
+ const char *session_name = NULL, *leftover = NULL;
+ poptContext pc;
+ struct lttng_save_session_attr *attr;
+
+ pc = poptGetContext(NULL, argc, argv, save_opts, 0);
+ poptReadDefaultConfig(pc, 0);
+
+ while ((opt = poptGetNextOpt(pc)) != -1) {
+ switch (opt) {
+ case OPT_HELP:
+ SHOW_HELP();
+ goto end;
+ case OPT_ALL:
+ opt_save_all = true;
+ break;
+ case OPT_FORCE:
+ opt_force = true;
+ break;
+ case OPT_LIST_OPTIONS:
+ list_cmd_options(stdout, save_opts);
+ goto end;
+ default:
+ ret = CMD_UNDEFINED;
+ goto end;
+ }
+ }
+
+ if (!opt_save_all) {
+ session_name = poptGetArg(pc);
+ if (session_name) {
+ DBG2("Session name: %s", session_name);
+ } else {
+ /* default to opt_save_all */
+ opt_save_all = true;
+ }
+ }
+
+ leftover = poptGetArg(pc);
+ if (leftover) {
+ ERR("Unknown argument: %s", leftover);
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ attr = lttng_save_session_attr_create();
+ if (!attr) {
+ ret = CMD_FATAL;
+ goto end_destroy;
+ }
+
+ if (lttng_save_session_attr_set_session_name(attr, session_name)) {
+ ret = CMD_ERROR;
+ goto end_destroy;
+ }
+
+ if (lttng_save_session_attr_set_overwrite(attr, opt_force)) {
+ ret = CMD_ERROR;
+ goto end_destroy;
+ }
+
+ if (lttng_save_session_attr_set_output_url(attr, opt_output_path)) {
+ ret = CMD_ERROR;
+ goto end_destroy;
+ }
+
+ /* Mi check */
+ if (lttng_opt_mi) {
+ writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
+ if (!writer) {
+ ret = -LTTNG_ERR_NOMEM;
+ goto end_destroy;
+ }
+
+ /* Open command element */
+ ret = mi_lttng_writer_command_open(writer,
+ mi_lttng_element_command_save);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end_destroy;
+ }
+
+ /* Open output element */
+ ret = mi_lttng_writer_open_element(writer,
+ mi_lttng_element_command_output);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end_destroy;
+ }
+ }
+
+ command_ret = lttng_save_session(attr);
+ if (command_ret < 0) {
+ ERR("%s", lttng_strerror(command_ret));
+ success = 0;
+ } else {
+ /* Inform the user of what just happened on success. */
+ if (session_name && opt_output_path) {
+ MSG("Session %s saved successfully in %s.", session_name,
+ opt_output_path);
+ } else if (session_name && !opt_output_path) {
+ MSG("Session %s saved successfully.", session_name);
+ } else if (!session_name && opt_output_path) {
+ MSG("All sessions have been saved successfully in %s.",
+ opt_output_path);
+ } else {
+ MSG("All sessions have been saved successfully.");
+ }
+ success = 1;
+ }
+
+ /* Mi Printing and closing */
+ if (lttng_opt_mi) {
+ /* Mi print */
+ ret = mi_save_print(session_name);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end_destroy;
+ }
+
+ /* Close output element */
+ ret = mi_lttng_writer_close_element(writer);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end_destroy;
+ }
+
+ /* Success ? */
+ ret = mi_lttng_writer_write_element_bool(writer,
+ mi_lttng_element_command_success, success);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end_destroy;
+ }
+
+ /* Command element close */
+ ret = mi_lttng_writer_command_close(writer);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end_destroy;
+ }
+ }
+end_destroy:
+ lttng_save_session_attr_destroy(attr);
+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 command failed */
+ ret = command_ret ? -command_ret : ret;
+
+ poptFreeContext(pc);
+ return ret;
+}
projects / lttng-tools.git / blobdiff