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 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 LTTNG_HIDDEN
  37 const char *lttng_process_attr_to_string(enum lttng_process_attr process_attr);
  38
  39 LTTNG_HIDDEN
  40 struct lttng_process_attr_values *lttng_process_attr_values_create(void);
  41
  42 /* Prefixed with '_' since the name conflicts with a public API. */
  43 LTTNG_HIDDEN
  44 unsigned int _lttng_process_attr_values_get_count(
  45                 const struct lttng_process_attr_values *values);
  46
  47 LTTNG_HIDDEN
  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 LTTNG_HIDDEN
  53 int lttng_process_attr_values_serialize(
  54                 const struct lttng_process_attr_values *values,
  55                 struct lttng_dynamic_buffer *buffer);
  56
  57 LTTNG_HIDDEN
  58 ssize_t lttng_process_attr_values_create_from_buffer(
  59                 enum lttng_domain_type domain,
  60                 enum lttng_process_attr process_attr,
  61                 const struct lttng_buffer_view *buffer_view,
  62                 struct lttng_process_attr_values **_values);
  63
  64 LTTNG_HIDDEN
  65 void lttng_process_attr_values_destroy(
  66                 struct lttng_process_attr_values *values);
  67
  68 LTTNG_HIDDEN
  69 struct process_attr_value *process_attr_value_copy(
  70                 const struct process_attr_value *value);
  71
  72 LTTNG_HIDDEN
  73 unsigned long process_attr_value_hash(const struct process_attr_value *a);
  74
  75 LTTNG_HIDDEN
  76 bool process_attr_tracker_value_equal(const struct process_attr_value *a,
  77                 const struct process_attr_value *b);
  78
  79 LTTNG_HIDDEN
  80 void process_attr_value_destroy(struct process_attr_value *value);
  81
  82 LTTNG_HIDDEN
  83 enum lttng_error_code process_attr_value_from_comm(
  84                 enum lttng_domain_type domain,
  85                 enum lttng_process_attr process_attr,
  86                 enum lttng_process_attr_value_type value_type,
  87                 const struct process_attr_integral_value_comm *integral_value,
  88                 const struct lttng_buffer_view *value_view,
  89                 struct process_attr_value **value);
  90
  91 #endif /* LTTNG_COMMON_TRACKER_H */