src/common/tracker.h

   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.h>
  16 #include <common/dynamic-array.h>
  17 #include <common/macros.h>
  18 #include <common/sessiond-comm/sessiond-comm.h>
  19
  20 #if defined(__cplusplus)
  21 extern "C" {
  22 #endif
  23
  24 struct process_attr_value {
  25         enum lttng_process_attr_value_type type;
  26         union value {
  27                 pid_t pid;
  28                 uid_t uid;
  29                 char *user_name;
  30                 gid_t gid;
  31                 char *group_name;
  32         } value;
  33 };
  34
  35 struct lttng_process_attr_values {
  36         /* Array of struct process_attr_tracker_value. */
  37         struct lttng_dynamic_pointer_array array;
  38 };
  39
  40 const char *lttng_process_attr_to_string(enum lttng_process_attr process_attr);
  41
  42 struct lttng_process_attr_values *lttng_process_attr_values_create(void);
  43
  44 /* Prefixed with '_' since the name conflicts with a public API. */
  45 unsigned int _lttng_process_attr_values_get_count(
  46                 const struct lttng_process_attr_values *values);
  47
  48 const struct process_attr_value *lttng_process_attr_tracker_values_get_at_index(
  49                 const struct lttng_process_attr_values *values,
  50                 unsigned int index);
  51
  52 int lttng_process_attr_values_serialize(
  53                 const struct lttng_process_attr_values *values,
  54                 struct lttng_dynamic_buffer *buffer);
  55
  56 ssize_t lttng_process_attr_values_create_from_buffer(
  57                 enum lttng_domain_type domain,
  58                 enum lttng_process_attr process_attr,
  59                 const struct lttng_buffer_view *buffer_view,
  60                 struct lttng_process_attr_values **_values);
  61
  62 void lttng_process_attr_values_destroy(
  63                 struct lttng_process_attr_values *values);
  64
  65 struct process_attr_value *process_attr_value_copy(
  66                 const struct process_attr_value *value);
  67
  68 unsigned long process_attr_value_hash(const struct process_attr_value *a);
  69
  70 bool process_attr_tracker_value_equal(const struct process_attr_value *a,
  71                 const struct process_attr_value *b);
  72
  73 void process_attr_value_destroy(struct process_attr_value *value);
  74
  75 enum lttng_error_code process_attr_value_from_comm(
  76                 enum lttng_domain_type domain,
  77                 enum lttng_process_attr process_attr,
  78                 enum lttng_process_attr_value_type value_type,
  79                 const struct process_attr_integral_value_comm *integral_value,
  80                 const struct lttng_buffer_view *value_view,
  81                 struct process_attr_value **value);
  82
  83 #if defined(__cplusplus)
  84 }
  85 #endif
  86
  87 #endif /* LTTNG_COMMON_TRACKER_H */