/**
 * @file fuse/fuse_common.h
 * WinFsp FUSE compatible API.
 *
 * This file is derived from libfuse/include/fuse_common.h:
 *     FUSE: Filesystem in Userspace
 *     Copyright (C) 2001-2007  Miklos Szeredi <miklos@szeredi.hu>
 *
 * @copyright 2015-2016 Bill Zissimopoulos
 */
/*
 * This file is part of WinFsp.
 *
 * You can redistribute it and/or modify it under the terms of the
 * GNU Affero General Public License version 3 as published by the
 * Free Software Foundation.
 *
 * Licensees holding a valid commercial license may use this file in
 * accordance with the commercial license agreement provided with the
 * software.
 */

#ifndef FUSE_COMMON_H_
#define FUSE_COMMON_H_

#include "winfsp_fuse.h"
#include "fuse_opt.h"

#ifdef __cplusplus
extern "C" {
#endif

#define FUSE_MAJOR_VERSION              2
#define FUSE_MINOR_VERSION              8
#define FUSE_MAKE_VERSION(maj, min)     ((maj) * 10 + (min))
#define FUSE_VERSION                    FUSE_MAKE_VERSION(FUSE_MAJOR_VERSION, FUSE_MINOR_VERSION)

#define FUSE_CAP_ASYNC_READ             (1 << 0)
#define FUSE_CAP_POSIX_LOCKS            (1 << 1)
#define FUSE_CAP_ATOMIC_O_TRUNC         (1 << 3)
#define FUSE_CAP_EXPORT_SUPPORT         (1 << 4)
#define FUSE_CAP_BIG_WRITES             (1 << 5)
#define FUSE_CAP_DONT_MASK              (1 << 6)

#define FUSE_IOCTL_COMPAT               (1 << 0)
#define FUSE_IOCTL_UNRESTRICTED         (1 << 1)
#define FUSE_IOCTL_RETRY                (1 << 2)
#define FUSE_IOCTL_MAX_IOV              256

struct fuse_file_info
{
    int flags;
    unsigned int fh_old;
    int writepage;
    unsigned int direct_io:1;
    unsigned int keep_cache:1;
    unsigned int flush:1;
    unsigned int nonseekable:1;
    unsigned int padding:28;
    uint64_t fh;
    uint64_t lock_owner;
};

struct fuse_conn_info
{
    unsigned proto_major;
    unsigned proto_minor;
    unsigned async_read;
    unsigned max_write;
    unsigned max_readahead;
    unsigned capable;
    unsigned want;
    unsigned reserved[25];
};

struct fuse_session;
struct fuse_chan;
struct fuse_pollhandle;

FSP_FUSE_API int fsp_fuse_version(struct fsp_fuse_env *env);
FSP_FUSE_API struct fuse_chan *fsp_fuse_mount(struct fsp_fuse_env *env,
    const char *mountpoint, struct fuse_args *args);
FSP_FUSE_API void fsp_fuse_unmount(struct fsp_fuse_env *env,
    const char *mountpoint, struct fuse_chan *ch);
FSP_FUSE_API int fsp_fuse_parse_cmdline(struct fsp_fuse_env *env,
    struct fuse_args *args,
    char **mountpoint, int *multithreaded, int *foreground);
FSP_FUSE_API long fsp_fuse_ntstatus_from_errno(struct fsp_fuse_env *env,
    int err);

static inline int fuse_version(void)
{
    return fsp_fuse_version(fsp_fuse_env());
}

static inline struct fuse_chan *fuse_mount(const char *mountpoint, struct fuse_args *args)
{
    return fsp_fuse_mount(fsp_fuse_env(), mountpoint, args);
}

static inline void fuse_unmount(const char *mountpoint, struct fuse_chan *ch)
{
    fsp_fuse_unmount(fsp_fuse_env(), mountpoint, ch);
}

static inline int fuse_parse_cmdline(struct fuse_args *args,
    char **mountpoint, int *multithreaded, int *foreground)
{
    return fsp_fuse_parse_cmdline(fsp_fuse_env(), args, mountpoint, multithreaded, foreground);
}

static inline void fuse_pollhandle_destroy(struct fuse_pollhandle *ph)
{
    (void)ph;
}

static inline int fuse_daemonize(int foreground)
{
    return fsp_fuse_daemonize(foreground);
}

static inline int fuse_set_signal_handlers(struct fuse_session *se)
{
    return fsp_fuse_set_signal_handlers(se);
}

static inline void fuse_remove_signal_handlers(struct fuse_session *se)
{
    fsp_fuse_remove_signal_handlers(se);
}

#ifdef __cplusplus
}
#endif

#endif