src/lttng-syscalls.h

   1 /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
   2  *
   3  * lttng-syscalls.h
   4  *
   5  * LTTng syscall header.
   6  *
   7  * Copyright (C) 2021 Francis Deslauriers <francis.deslauriers@efficios.com>
   8  */
   9
  10 #ifndef LTTNG_SYSCALLS_H
  11 #define LTTNG_SYSCALLS_H
  12
  13 #include <stddef.h>
  14
  15 #include <asm/ptrace.h>
  16 #include <linux/compat.h>
  17 #include <linux/fcntl.h>
  18 #include <linux/in.h>
  19 #include <linux/in6.h>
  20 #include <linux/mman.h>
  21
  22 #include <lttng/events.h>
  23 #include <lttng/kernel-version.h>
  24
  25
  26 /*
  27  * Forward declarations for old kernels.
  28  */
  29 struct mmsghdr;
  30 struct rlimit64;
  31 struct oldold_utsname;
  32 struct old_utsname;
  33 struct sel_arg_struct;
  34 struct mmap_arg_struct;
  35 struct file_handle;
  36 struct user_msghdr;
  37
  38 /*
  39  * Forward declaration for kernels >= 5.6
  40  */
  41 struct timex;
  42 struct timeval;
  43 struct itimerval;
  44 struct itimerspec;
  45
  46 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0))
  47 typedef __kernel_old_time_t time_t;
  48 #endif
  49
  50 struct trace_syscall_entry {
  51         void *event_func;
  52         const struct lttng_kernel_event_desc *desc;
  53         const struct lttng_kernel_event_field * const *fields;
  54         unsigned int nrargs;
  55 };
  56
  57 struct trace_syscall_table {
  58         const struct trace_syscall_entry *table;
  59         const size_t len;
  60 };
  61
  62 extern
  63 void syscall_entry_event_probe(void *__data, struct pt_regs *regs, long id);
  64
  65 extern
  66 void syscall_exit_event_probe(void *__data, struct pt_regs *regs, long ret);
  67
  68 extern
  69 void syscall_entry_event_notifier_probe(void *__data, struct pt_regs *regs,
  70                 long id);
  71 extern
  72 void syscall_exit_event_notifier_probe(void *__data, struct pt_regs *regs,
  73                 long ret);
  74
  75 #endif /* LTTNG_SYSCALLS_H */