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