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

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