include/lttng/event-rule/user-tracepoint-internal.hpp

   1 /*
   2  * Copyright (C) 2021 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
   3  *
   4  * SPDX-License-Identifier: LGPL-2.1-only
   5  *
   6  */
   7
   8 #ifndef LTTNG_EVENT_RULE_USER_TRACEPOINT_INTERNAL_H
   9 #define LTTNG_EVENT_RULE_USER_TRACEPOINT_INTERNAL_H
  10
  11 #include <common/macros.hpp>
  12 #include <common/optional.hpp>
  13 #include <common/payload-view.hpp>
  14
  15 #include <lttng/domain.h>
  16 #include <lttng/event-rule/event-rule-internal.hpp>
  17 #include <lttng/event-rule/user-tracepoint.h>
  18 #include <lttng/event.h>
  19 #include <lttng/log-level-rule-internal.hpp>
  20
  21 struct lttng_event_rule_user_tracepoint {
  22         struct lttng_event_rule parent;
  23
  24         /* Name pattern. */
  25         char *pattern;
  26
  27         /* Filter. */
  28         char *filter_expression;
  29
  30         /* Log level. */
  31         struct lttng_log_level_rule *log_level_rule;
  32
  33         /* Exclusions. */
  34         struct lttng_dynamic_pointer_array exclusions;
  35
  36         /* internal use only. */
  37         struct {
  38                 char *filter;
  39                 struct lttng_bytecode *bytecode;
  40         } internal_filter;
  41 };
  42
  43 struct lttng_event_rule_user_tracepoint_comm {
  44         /* Includes terminator `\0`. */
  45         uint32_t pattern_len;
  46         /* Includes terminator `\0`. */
  47         uint32_t filter_expression_len;
  48         /*  enum lttng_log_level_rule_comm + payload if any */
  49         uint32_t log_level_rule_len;
  50         uint32_t exclusions_count;
  51         uint32_t exclusions_len;
  52         /*
  53          * Payload is composed of, in that order:
  54          *   - pattern (null terminated),
  55          *   - filter expression (null terminated),
  56          *   - log level rule serialized object,
  57          *   - exclusions (32 bit length + null terminated string).
  58          */
  59         char payload[];
  60 } LTTNG_PACKED;
  61
  62 ssize_t lttng_event_rule_user_tracepoint_create_from_payload(struct lttng_payload_view *view,
  63                                                              struct lttng_event_rule **rule);
  64
  65 #endif /* LTTNG_EVENT_RULE_USER_TRACEPOINT_INTERNAL_H */