/*
 * eset_rtp (ESET Real-time file system protection module)
 * Copyright (C) 1992-2023 ESET, spol. s r.o.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 * In case of any questions, you can contact us at ESET, spol. s r.o., Einsteinova 24, 851 01 Bratislava, Slovakia.
 */

#ifndef _ERTP_OPEN_HANDLERS_H_
#define _ERTP_OPEN_HANDLERS_H_

#include <linux/version.h>

#include "ertp_handlers.h"

#ifdef ERTP_KERNEL_USES_SYSCALL_WRAPPER

extern sys_regs_t ertp_original_native_64_open;
extern sys_regs_t ertp_original_native_32_open;
extern sys_regs_t ertp_original_compat_32_open;

asmlinkage long notrace ertp_handler_native_64_open(struct pt_regs *regs);
asmlinkage long notrace ertp_handler_native_32_open(struct pt_regs *regs);
asmlinkage long notrace ertp_handler_compat_32_open(struct pt_regs *regs);

#else

typedef asmlinkage long (*sys_open_t)(const char *filename, int flags,
                                      umode_t mode);

extern sys_open_t ertp_original_native_64_open;
extern sys_open_t ertp_original_native_32_open;
extern sys_open_t ertp_original_compat_32_open;

asmlinkage long notrace ertp_handler_native_64_open(const char __user *filename,
                                                    int flags, umode_t mode);
asmlinkage long notrace ertp_handler_native_32_open(const char __user *filename,
                                                    int flags, umode_t mode);
asmlinkage long notrace ertp_handler_compat_32_open(const char __user *filename,
                                                    int flags, umode_t mode);

#endif

#ifdef ERTP_KERNEL_USES_SYSCALL_WRAPPER

extern sys_regs_t ertp_original_native_64_openat;
extern sys_regs_t ertp_original_native_32_openat;
extern sys_regs_t ertp_original_compat_32_openat;

asmlinkage long notrace ertp_handler_native_64_openat(struct pt_regs *regs);
asmlinkage long notrace ertp_handler_native_32_openat(struct pt_regs *regs);
asmlinkage long notrace ertp_handler_compat_32_openat(struct pt_regs *regs);

#else

typedef asmlinkage long (*sys_openat_t)(int dirfd, const char *filename,
                                        int flags, umode_t mode);

extern sys_openat_t ertp_original_native_64_openat;
extern sys_openat_t ertp_original_native_32_openat;
extern sys_openat_t ertp_original_compat_32_openat;

asmlinkage long notrace ertp_handler_native_64_openat(
    int dirfd, const char __user *filename, int flags, umode_t mode);
asmlinkage long notrace ertp_handler_native_32_openat(
    int dirfd, const char __user *filename, int flags, umode_t mode);
asmlinkage long notrace ertp_handler_compat_32_openat(
    int dirfd, const char __user *filename, int flags, umode_t mode);

#endif

#endif