include/lttng/event-rule/syscall-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_SYSCALL_INTERNAL_H
   9 #define LTTNG_EVENT_RULE_SYSCALL_INTERNAL_H
  10
  11 #include <common/payload-view.h>
  12 #include <common/macros.h>
  13 #include <lttng/event-rule/event-rule-internal.h>
  14 #include <lttng/event-rule/syscall.h>
  15
  16 struct lttng_event_rule_syscall {
  17         struct lttng_event_rule parent;
  18         char *pattern;
  19         char *filter_expression;
  20
  21         /* Internal use only. */
  22         struct {
  23                 char *filter;
  24                 struct lttng_filter_bytecode *bytecode;
  25         } internal_filter;
  26 };
  27
  28 struct lttng_event_rule_syscall_comm {
  29         /* Includes terminator `\0`. */
  30         uint32_t pattern_len;
  31         /* Includes terminator `\0`. */
  32         uint32_t filter_expression_len;
  33         /*
  34          * Payload is composed of, in that order:
  35          *   - Pattern (null terminated),
  36          *   - Filter expression (null terminated).
  37          */
  38         char payload[];
  39 } LTTNG_PACKED;
  40
  41 LTTNG_HIDDEN
  42 ssize_t lttng_event_rule_syscall_create_from_payload(
  43                 struct lttng_payload_view *view,
  44                 struct lttng_event_rule **rule);
  45
  46 #endif /* LTTNG_EVENT_RULE_SYSCALL_INTERNAL_H */