/* SPDX-License-Identifier: GPL-2.0+ */

#ifndef _AVM_ENH_PROC_COMPAT_H
#define _AVM_ENH_PROC_COMPAT_H

#include <linux/version.h>
#include <linux/proc_fs.h>

#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 6, 0)

#define DECLARE_PROC_COMPAT_FOPS(_name)		struct proc_ops _name

#define PROC_COMPAT_FOPS(_name, _open, _read, _write, _lseek, _release) \
struct proc_ops _name = {						\
	.proc_open	= _open,					\
	.proc_write	= _write,					\
	.proc_read	= _read,					\
	.proc_lseek	= _lseek,					\
	.proc_release	= _release,					\
}

#define PROC_SET_COMPAT_FOPS(_name, _open, _read, _write, _lseek, _release)	\
do {									\
	_name.proc_open		= _open;				\
	_name.proc_write	= _write;				\
	_name.proc_read		= _read;				\
	_name.proc_lseek	= _lseek;				\
	_name.proc_release	= _release;				\
} while (0)

#else

#define DECLARE_PROC_COMPAT_FOPS(_name)		struct file_operations _name

#define PROC_COMPAT_FOPS(_name, _open, _read, _write, _lseek, _release) \
struct file_operations _name = {					\
	.open		= _open,					\
	.write		= _write,					\
	.read		= _read,					\
	.llseek		= _lseek,					\
	.release	= _release,					\
}

#define PROC_SET_COMPAT_FOPS(_name, _open, _read, _write, _lseek, _release)	\
do {									\
	_name.open	= _open;					\
	_name.write	= _write;					\
	_name.read	= _read;					\
	_name.llseek	= _lseek;					\
	_name.release	= _release;					\
} while (0)

#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(5, 6, 0) */

#endif /* _AVM_ENH_PROC_COMPAT_H */