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 #if defined(__cplusplus)
  17 extern "C" {
  18 #endif
  19
  20 struct lttng_event_rule_kernel_syscall {
  21         struct lttng_event_rule parent;
  22         enum lttng_event_rule_kernel_syscall_emission_site emission_site;
  23         char *pattern;
  24         char *filter_expression;
  25
  26         /* Internal use only. */
  27         struct {
  28                 char *filter;
  29                 struct lttng_bytecode *bytecode;
  30         } internal_filter;
  31 };
  32
  33 struct lttng_event_rule_kernel_syscall_comm {
  34         uint32_t emission_site;
  35         /* Includes terminator `\0`. */
  36         uint32_t pattern_len;
  37         /* Includes terminator `\0`. */
  38         uint32_t filter_expression_len;
  39         /*
  40          * Payload is composed of, in that order:
  41          *   - Pattern (null terminated),
  42          *   - Filter expression (null terminated).
  43          */
  44         char payload[];
  45 } LTTNG_PACKED;
  46
  47 ssize_t lttng_event_rule_kernel_syscall_create_from_payload(
  48                 struct lttng_payload_view *view,
  49                 struct lttng_event_rule **rule);
  50
  51 const char *lttng_event_rule_kernel_syscall_emission_site_str(
  52                 enum lttng_event_rule_kernel_syscall_emission_site emission_site);
  53
  54 #if defined(__cplusplus)
  55 }
  56 #endif
  57
  58 #endif /* LTTNG_EVENT_RULE_KERNEL_SYSCALL_INTERNAL_H */