src/bin/lttng-sessiond/ust-registry-session-uid.cpp

   1 /*
   2  * Copyright (C) 2022 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   3  *
   4  * SPDX-License-Identifier: GPL-2.0-only
   5  *
   6  */
   7
   8 #include "ust-registry-session-uid.hpp"
   9
  10 namespace lst = lttng::sessiond::trace;
  11 namespace lsu = lttng::sessiond::ust;
  12
  13 lsu::registry_session_per_uid::registry_session_per_uid(
  14                 const struct lst::abi& in_abi,
  15                 uint32_t major,
  16                 uint32_t minor,
  17                 const char *root_shm_path,
  18                 const char *shm_path,
  19                 uid_t euid,
  20                 gid_t egid,
  21                 uint64_t tracing_id,
  22                 uid_t tracing_uid) :
  23         registry_session{in_abi, major, minor, root_shm_path, shm_path, euid, egid, tracing_id},
  24         _tracing_uid{tracing_uid}
  25 {
  26         lttng::pthread::lock_guard registry_lock(_lock);
  27         _generate_metadata();
  28 }
  29
  30 lttng_buffer_type lsu::registry_session_per_uid::get_buffering_scheme() const noexcept
  31 {
  32         return LTTNG_BUFFER_PER_UID;
  33 }
  34
  35 void lsu::registry_session_per_uid::accept(lst::trace_class_environment_visitor& visitor) const
  36 {
  37         registry_session::accept(visitor);
  38         visitor.visit(lst::environment_field<int64_t>("tracer_buffering_id", _tracing_uid));
  39 }