zone.h

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#ifndef ZONE_H
#define ZONE_H

#include <libzbd/zbd.h>

#include "device.h"

struct zone_file_descriptor {
    int fd;
};

struct zone_meta {
    size_t total_size;
    uint64_t zone_size;
    uint64_t nr_zones;
    uint64_t block_size;
    int o_flags;

    char *buffer;

    struct zone_file_descriptor read;
    struct zone_file_descriptor write;
    struct zbd_info info;
    struct zbd_zone *zones;
};

int zone_open(struct device *, const char *name, int flags);
ssize_t zone_write(struct device *, struct device_request *);
ssize_t zone_read(struct device *, struct device_request *);
int zone_erase(struct device *, struct device_request *);
int zone_close(struct device *);

int zone_device_init(struct device *, uint64_t flags);
int zone_device_exit(struct device *);

static inline uint64_t zone_get_zone_number(struct device *dev,
                        struct device_address paddr)
{
    struct zone_meta *meta = (struct zone_meta *)dev->d_private;
    size_t page_size = device_get_page_size(dev);
    return paddr.lpn / (meta->zone_size / page_size);
}

#endif