include/lttng/event-rule/kernel-syscall-internal.hpp

   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_KERNEL_SYSCALL_INTERNAL_H
   9 #define LTTNG_EVENT_RULE_KERNEL_SYSCALL_INTERNAL_H
  10
  11 #include <common/macros.hpp>
  12 #include <common/payload-view.hpp>
  13
  14 #include <lttng/event-rule/event-rule-internal.hpp>
  15 #include <lttng/event-rule/kernel-syscall.h>
  16
  17 struct lttng_event_rule_kernel_syscall {
  18         struct lttng_event_rule parent;
  19         enum lttng_event_rule_kernel_syscall_emission_site emission_site;
  20         char *pattern;
  21         char *filter_expression;
  22
  23         /* Internal use only. */
  24         struct {
  25                 char *filter;
  26                 struct lttng_bytecode *bytecode;
  27         } internal_filter;
  28 };
  29
  30 struct lttng_event_rule_kernel_syscall_comm {
  31         uint32_t emission_site;
  32         /* Includes terminator `\0`. */
  33         uint32_t pattern_len;
  34         /* Includes terminator `\0`. */
  35         uint32_t filter_expression_len;
  36         /*
  37          * Payload is composed of, in that order:
  38          *   - Pattern (null terminated),
  39          *   - Filter expression (null terminated).
  40          */
  41         char payload[];
  42 } LTTNG_PACKED;
  43
  44 ssize_t lttng_event_rule_kernel_syscall_create_from_payload(struct lttng_payload_view *view,
  45                                                             struct lttng_event_rule **rule);
  46
  47 const char *lttng_event_rule_kernel_syscall_emission_site_str(
  48         enum lttng_event_rule_kernel_syscall_emission_site emission_site);
  49
  50 #endif /* LTTNG_EVENT_RULE_KERNEL_SYSCALL_INTERNAL_H */