include/lttng/trigger/trigger-internal.h

   1 /*
   2  * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   3  *
   4  * SPDX-License-Identifier: LGPL-2.1-only
   5  *
   6  */
   7
   8 #ifndef LTTNG_TRIGGER_INTERNAL_H
   9 #define LTTNG_TRIGGER_INTERNAL_H
  10
  11 #include <lttng/trigger/trigger.h>
  12 #include <common/credentials.h>
  13 #include <common/macros.h>
  14 #include <common/optional.h>
  15 #include <stdint.h>
  16 #include <stdbool.h>
  17 #include <sys/types.h>
  18 #include <urcu/ref.h>
  19
  20 struct lttng_payload;
  21 struct lttng_payload_view;
  22
  23 struct lttng_trigger {
  24         /* Reference counting is only exposed to internal users. */
  25         struct urcu_ref ref;
  26
  27         struct lttng_condition *condition;
  28         struct lttng_action *action;
  29         /* For now only the uid portion of the credentials is used. */
  30         struct lttng_credentials creds;
  31 };
  32
  33 struct lttng_trigger_comm {
  34         /* length excludes its own length. */
  35         uint32_t length;
  36         /*
  37          * Credentials, only the uid portion is used for now.
  38          * Used as an override when desired by the root user.
  39          */
  40         uint64_t uid;
  41         /* A condition and action object follow. */
  42         char payload[];
  43 } LTTNG_PACKED;
  44
  45 LTTNG_HIDDEN
  46 ssize_t lttng_trigger_create_from_payload(struct lttng_payload_view *view,
  47                 struct lttng_trigger **trigger);
  48
  49 LTTNG_HIDDEN
  50 int lttng_trigger_serialize(struct lttng_trigger *trigger,
  51                 struct lttng_payload *payload);
  52
  53 LTTNG_HIDDEN
  54 const struct lttng_condition *lttng_trigger_get_const_condition(
  55                 const struct lttng_trigger *trigger);
  56
  57 LTTNG_HIDDEN
  58 const struct lttng_action *lttng_trigger_get_const_action(
  59                 const struct lttng_trigger *trigger);
  60
  61 LTTNG_HIDDEN
  62 bool lttng_trigger_validate(struct lttng_trigger *trigger);
  63
  64 LTTNG_HIDDEN
  65 void lttng_trigger_get(struct lttng_trigger *trigger);
  66
  67 LTTNG_HIDDEN
  68 void lttng_trigger_put(struct lttng_trigger *trigger);
  69
  70 LTTNG_HIDDEN
  71 const struct lttng_credentials *lttng_trigger_get_credentials(
  72                 const struct lttng_trigger *trigger);
  73
  74 LTTNG_HIDDEN
  75 void lttng_trigger_set_credentials(struct lttng_trigger *trigger,
  76                 const struct lttng_credentials *creds);
  77
  78 #endif /* LTTNG_TRIGGER_INTERNAL_H */