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 <common/optional.h>
  14 #include <lttng/domain.h>
  15 #include <lttng/event-rule/event-rule-internal.h>
  16 #include <lttng/event-rule/tracepoint.h>
  17 #include <lttng/event.h>
  18 #include <lttng/log-level-rule-internal.h>
  19
  20 struct lttng_event_rule_tracepoint {
  21         struct lttng_event_rule parent;
  22
  23         /* Domain. */
  24         enum lttng_domain_type domain;
  25
  26         /* Name pattern. */
  27         char *pattern;
  28
  29         /* Filter. */
  30         char *filter_expression;
  31
  32         /* Log level. */
  33         struct lttng_log_level_rule *log_level_rule;
  34
  35         /* Exclusions. */
  36         struct lttng_dynamic_pointer_array exclusions;
  37
  38         /* internal use only. */
  39         struct {
  40                 char *filter;
  41                 struct lttng_bytecode *bytecode;
  42         } internal_filter;
  43 };
  44
  45 struct lttng_event_rule_tracepoint_comm {
  46         /* enum lttng_domain_type. */
  47         int8_t domain_type;
  48         /* Includes terminator `\0`. */
  49         uint32_t pattern_len;
  50         /* Includes terminator `\0`. */
  51         uint32_t filter_expression_len;
  52         /*  enum lttng_log_level_rule_comm + payload if any */
  53         uint32_t log_level_rule_len;
  54         uint32_t exclusions_count;
  55         uint32_t exclusions_len;
  56         /*
  57          * Payload is composed of, in that order:
  58          *   - pattern (null terminated),
  59          *   - filter expression (null terminated),
  60          *   - log level rule serialized object,
  61          *   - exclusions (32 bit length + null terminated string).
  62          */
  63         char payload[];
  64 } LTTNG_PACKED;
  65
  66 LTTNG_HIDDEN
  67 ssize_t lttng_event_rule_tracepoint_create_from_payload(
  68                 struct lttng_payload_view *view,
  69                 struct lttng_event_rule **rule);
  70
  71 #endif /* LTTNG_EVENT_RULE_TRACEPOINT_INTERNAL_H */