include/lttng/event-rule/tracepoint-internal.h

   1 /*
   2  * Copyright (C) 2019 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
   3  *
   4  * SPDX-License-Identifier: LGPL-2.1-only
   5  *
   6  */
   7
   8 #ifndef LTTNG_EVENT_RULE_TRACEPOINT_INTERNAL_H
   9 #define LTTNG_EVENT_RULE_TRACEPOINT_INTERNAL_H
  10
  11 #include <common/payload-view.h>
  12 #include <common/macros.h>
  13 #include <lttng/domain.h>
  14 #include <lttng/event-rule/event-rule-internal.h>
  15 #include <lttng/event-rule/tracepoint.h>
  16 #include <lttng/event.h>
  17
  18 struct lttng_event_rule_tracepoint {
  19         struct lttng_event_rule parent;
  20
  21         /* Domain. */
  22         enum lttng_domain_type domain;
  23
  24         /* Name pattern. */
  25         char *pattern;
  26
  27         /* Filter. */
  28         char *filter_expression;
  29
  30         /* Loglevel. */
  31         struct {
  32                 enum lttng_loglevel_type type;
  33                 int value;
  34         } loglevel;
  35
  36         /* Exclusions. */
  37         struct lttng_dynamic_pointer_array exclusions;
  38
  39         /* internal use only. */
  40         struct {
  41                 char *filter;
  42                 struct lttng_bytecode *bytecode;
  43         } internal_filter;
  44 };
  45
  46 struct lttng_event_rule_tracepoint_comm {
  47         /* enum lttng_domain_type. */
  48         int8_t domain_type;
  49         /* enum lttng_event_logleven_type. */
  50         int8_t loglevel_type;
  51         int32_t loglevel_value;
  52         /* Includes terminator `\0`. */
  53         uint32_t pattern_len;
  54         /* Includes terminator `\0`. */
  55         uint32_t filter_expression_len;
  56         uint32_t exclusions_count;
  57         uint32_t exclusions_len;
  58         /*
  59          * Payload is composed of, in that order:
  60          *   - pattern (null terminated),
  61          *   - filter expression (null terminated),
  62          *   - exclusions (32 bit length + null terminated string).
  63          */
  64         char payload[];
  65 } LTTNG_PACKED;
  66
  67 LTTNG_HIDDEN
  68 ssize_t lttng_event_rule_tracepoint_create_from_payload(
  69                 struct lttng_payload_view *view,
  70                 struct lttng_event_rule **rule);
  71
  72 #endif /* LTTNG_EVENT_RULE_TRACEPOINT_INTERNAL_H */