src/common/tracker.hpp

   1 /*
   2  * Copyright (C) 2019 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
   3  * Copyright (C) 2020 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   4  *
   5  * SPDX-License-Identifier: LGPL-2.1-only
   6  *
   7  */
   8
   9 #ifndef LTTNG_COMMON_TRACKER_H
  10 #define LTTNG_COMMON_TRACKER_H
  11
  12 #include <lttng/lttng-error.h>
  13 #include <lttng/tracker.h>
  14
  15 #include <common/buffer-view.hpp>
  16 #include <common/dynamic-array.hpp>
  17 #include <common/macros.hpp>
  18 #include <common/sessiond-comm/sessiond-comm.hpp>
  19
  20 struct process_attr_value {
  21         enum lttng_process_attr_value_type type;
  22         union value {
  23                 pid_t pid;
  24                 uid_t uid;
  25                 char *user_name;
  26                 gid_t gid;
  27                 char *group_name;
  28         } value;
  29 };
  30
  31 struct lttng_process_attr_values {
  32         /* Array of struct process_attr_tracker_value. */
  33         struct lttng_dynamic_pointer_array array;
  34 };
  35
  36 const char *lttng_process_attr_to_string(enum lttng_process_attr process_attr);
  37
  38 struct lttng_process_attr_values *lttng_process_attr_values_create(void);
  39
  40 /* Prefixed with '_' since the name conflicts with a public API. */
  41 unsigned int _lttng_process_attr_values_get_count(
  42                 const struct lttng_process_attr_values *values);
  43
  44 const struct process_attr_value *lttng_process_attr_tracker_values_get_at_index(
  45                 const struct lttng_process_attr_values *values,
  46                 unsigned int index);
  47
  48 int lttng_process_attr_values_serialize(
  49                 const struct lttng_process_attr_values *values,
  50                 struct lttng_dynamic_buffer *buffer);
  51
  52 ssize_t lttng_process_attr_values_create_from_buffer(
  53                 enum lttng_domain_type domain,
  54                 enum lttng_process_attr process_attr,
  55                 const struct lttng_buffer_view *buffer_view,
  56                 struct lttng_process_attr_values **_values);
  57
  58 void lttng_process_attr_values_destroy(
  59                 struct lttng_process_attr_values *values);
  60
  61 struct process_attr_value *process_attr_value_copy(
  62                 const struct process_attr_value *value);
  63
  64 unsigned long process_attr_value_hash(const struct process_attr_value *a);
  65
  66 bool process_attr_tracker_value_equal(const struct process_attr_value *a,
  67                 const struct process_attr_value *b);
  68
  69 void process_attr_value_destroy(struct process_attr_value *value);
  70
  71 enum lttng_error_code process_attr_value_from_comm(
  72                 enum lttng_domain_type domain,
  73                 enum lttng_process_attr process_attr,
  74                 enum lttng_process_attr_value_type value_type,
  75                 const struct process_attr_integral_value_comm *integral_value,
  76                 const struct lttng_buffer_view *value_view,
  77                 struct process_attr_value **value);
  78
  79 #endif /* LTTNG_COMMON_TRACKER_H */