include/wrapper/syscall.h

   1 /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
   2  *
   3  * wrapper/syscall.h
   4  *
   5  * wrapper around asm/syscall.h.
   6  *
   7  * Copyright (C) 2019 Michael Jeanson <mjeanson@efficios.com>
   8  */
   9
  10 #ifndef _LTTNG_WRAPPER_SYSCALL_H
  11 #define _LTTNG_WRAPPER_SYSCALL_H
  12
  13 #include <asm/syscall.h>
  14 #include <lttng/kernel-version.h>
  15
  16 #define LTTNG_SYSCALL_NR_ARGS 6
  17
  18 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,1,0))
  19
  20 #define lttng_syscall_get_arguments(task, regs, args) \
  21         syscall_get_arguments(task, regs, args)
  22
  23 #else /* LINUX_VERSION_CODE >= KERNEL_VERSION(5,1,0) */
  24
  25 static inline
  26 void lttng_syscall_get_arguments(struct task_struct *task,
  27                 struct pt_regs *regs, unsigned long *args)
  28 {
  29         syscall_get_arguments(task, regs, 0, LTTNG_SYSCALL_NR_ARGS, args);
  30 }
  31
  32 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(5,1,0) */
  33
  34 #endif /* _LTTNG_WRAPPER_SYSCALL_H */