#define _LGPL_SOURCE
#include "command.hpp"
#include "conf.hpp"
+#include "exception.hpp"
#include "utils.hpp"
#include <common/defaults.hpp>
#include <ctype.h>
#include <fnmatch.h>
#include <inttypes.h>
+#include <iostream>
#include <limits.h>
#include <netinet/in.h>
#include <signal.h>
lttng::cli::session_list get_sessions(const FilterFunctionType& filter,
bool return_first_match_only = false)
{
- lttng::cli::session_list list;
-
- {
+ lttng::cli::session_list list = []() {
int list_ret;
struct lttng_session *psessions;
static_cast<lttng_error_code>(list_ret));
}
- list = lttng::cli::session_list(psessions, list_ret);
- }
+ return lttng::cli::session_list(psessions, list_ret);
+ }();
std::size_t write_to = 0;
for (std::size_t read_from = 0; read_from < list.size(); ++read_from) {
case lttng::cli::session_spec::type::NAME:
if (spec.value == nullptr) {
const auto configured_name =
- lttng::make_unique_wrapper<char, lttng::free>(get_session_name());
-
- if (configured_name) {
- const struct lttng::cli::session_spec new_spec(
- lttng::cli::session_spec::type::NAME,
- configured_name.get());
+ lttng::make_unique_wrapper<char, lttng::memory::free>(
+ get_session_name());
- return list_sessions(new_spec);
+ if (!configured_name) {
+ LTTNG_THROW_CLI_NO_DEFAULT_SESSION();
}
- return lttng::cli::session_list();
+ const struct lttng::cli::session_spec new_spec(
+ lttng::cli::session_spec::type::NAME, configured_name.get());
+
+ return list_sessions(new_spec);
}
return get_sessions(
return lttng::cli::session_list();
}
+
+void print_kernel_tracer_status_error()
+{
+ if (lttng_opt_mi) {
+ return;
+ }
+
+ enum lttng_kernel_tracer_status kernel_tracer_status;
+ const auto ret = lttng_get_kernel_tracer_status(&kernel_tracer_status);
+
+ if (ret < 0) {
+ ERR("Failed to get kernel tracer status: %s", lttng_strerror(ret));
+ } else {
+ switch (kernel_tracer_status) {
+ case LTTNG_KERNEL_TRACER_STATUS_INITIALIZED:
+ return;
+ case LTTNG_KERNEL_TRACER_STATUS_ERR_MODULES_UNKNOWN:
+ std::cerr << "\tKernel module loading failed" << std::endl;
+ break;
+ case LTTNG_KERNEL_TRACER_STATUS_ERR_MODULES_MISSING:
+ std::cerr << "\tMissing one or more required kernel modules" << std::endl;
+ break;
+ case LTTNG_KERNEL_TRACER_STATUS_ERR_MODULES_SIGNATURE:
+ std::cerr
+ << "\tKernel module signature error prevented loading of one or more required kernel modules"
+ << std::endl;
+ break;
+ case LTTNG_KERNEL_TRACER_STATUS_ERR_NEED_ROOT:
+ std::cerr << "\tlttng-sessiond isn't running as root" << std::endl;
+ break;
+ case LTTNG_KERNEL_TRACER_STATUS_ERR_NOTIFIER:
+ std::cerr << "\tFailed to setup notifiers" << std::endl;
+ break;
+ case LTTNG_KERNEL_TRACER_STATUS_ERR_OPEN_PROC_LTTNG:
+ std::cerr << "\tlttng-sessiond failed to open /proc/lttng" << std::endl;
+ break;
+ case LTTNG_KERNEL_TRACER_STATUS_ERR_VERSION_MISMATCH:
+ std::cerr << "\tVersion mismatch between kernel tracer and kernel tracer ABI"
+ << std::endl;
+ break;
+ default:
+ std::cerr << lttng::format("\t\tUnknown kernel tracer status (%d)",
+ static_cast<int>(kernel_tracer_status))
+ << std::endl;
+ break;
+ }
+
+ std::cerr << "\tConsult lttng-sessiond logs for more information" << std::endl;
+ }
+}