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 <lttng/trace-format-descriptor-internal.hpp>
   9
  10 #include "ust-registry-session-uid.hpp"
  11
  12 namespace lst = lttng::sessiond::trace;
  13 namespace lsu = lttng::sessiond::ust;
  14
  15 lsu::registry_session_per_uid::registry_session_per_uid(const struct lst::abi& in_abi,
  16                 uint32_t major,
  17                 uint32_t minor,
  18                 const char *root_shm_path,
  19                 const char *shm_path,
  20                 uid_t euid,
  21                 gid_t egid,
  22                 uint64_t tracing_id,
  23                 uid_t tracing_uid,
  24                 const lttng::trace_format_descriptor& trace_format) :
  25         registry_session{in_abi, major, minor, root_shm_path, shm_path, euid, egid, tracing_id,
  26                         trace_format},
  27         _tracing_uid{tracing_uid}
  28 {
  29         lttng::pthread::lock_guard registry_lock(_lock);
  30         _generate_metadata();
  31 }
  32
  33 lttng_buffer_type lsu::registry_session_per_uid::get_buffering_scheme() const noexcept
  34 {
  35         return LTTNG_BUFFER_PER_UID;
  36 }
  37
  38 void lsu::registry_session_per_uid::accept(lst::trace_class_environment_visitor& visitor) const
  39 {
  40         registry_session::accept(visitor);
  41         visitor.visit(lst::environment_field<int64_t>("tracer_buffering_id", _tracing_uid));
  42 }