/*
 * wnix, a Unix-like operating system for WebAssembly applications.
 * Copyright (C) 2025  Xavier Del Campo Romero
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#ifndef DRV_EVENT_H
#define DRV_EVENT_H

#include <sys/types.h>
#include <stdbool.h>
#include <stddef.h>

struct drv_port;

struct drv_event_done
{
    int (*f)(int error, void *args);
    void *args;
};

struct drv_event_ops
{
    int (*read)(struct drv_port *p, void *buf, size_t n, off_t offset,
        const struct drv_event_done *done);
    int (*read_nb)(struct drv_port *p, void *buf, size_t n);
    int (*write)(struct drv_port *p, const void *buf, size_t n,
        const struct drv_event_done *done);
    struct drv_port *p;
};

struct drv_event
{
    int (*status)(const char *node, const struct drv_event_ops *ops,
        bool available, mode_t mode, void *args);
    void *args;
};

#endif
