/* Copyright (c) 2021 Dennis Wölfing
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/* kernel/include/dennix/kernel/partition.h
 * Partitions.
 */

#ifndef KERNEL_PARTITION_H
#define KERNEL_PARTITION_H

#include <dennix/kernel/vnode.h>

class Partition : public Vnode {
public:
    Partition(const Reference<Vnode>& device, off_t offset, size_t size);
    bool isSeekable() override;
    off_t lseek(off_t offset, int whence) override;
    short poll() override;
    ssize_t pread(void* buffer, size_t size, off_t offset, int flags) override;
    ssize_t pwrite(const void* buffer, size_t size, off_t offset, int flags)
            override;
    int sync(int flags) override;
public:
    static void scanPartitions(const Reference<Vnode>& device,
            const char* deviceName, size_t sectorSize);
private:
    Reference<Vnode> device;
    off_t partitionOffset;
};

#endif
