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(const struct lst::abi& in_abi,
  14                                                         uint32_t major,
  15                                                         uint32_t minor,
  16                                                         const char *root_shm_path,
  17                                                         const char *shm_path,
  18                                                         uid_t euid,
  19                                                         gid_t egid,
  20                                                         uint64_t tracing_id,
  21                                                         uid_t tracing_uid) :
  22         registry_session{ in_abi, major, minor, root_shm_path, shm_path, euid, egid, tracing_id },
  23         _tracing_uid{ tracing_uid }
  24 {
  25         lttng::pthread::lock_guard registry_lock(_lock);
  26         _generate_metadata();
  27 }
  28
  29 lttng_buffer_type lsu::registry_session_per_uid::buffering_scheme() const noexcept
  30 {
  31         return LTTNG_BUFFER_PER_UID;
  32 }
  33
  34 void lsu::registry_session_per_uid::accept(lst::trace_class_environment_visitor& visitor) const
  35 {
  36         registry_session::accept(visitor);
  37         visitor.visit(lst::environment_field<int64_t>("tracer_buffering_id", _tracing_uid));
  38 }