phatvol.h

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#ifndef FS_PHATVOL_H_
#define FS_PHATVOL_H_

/*
 * Copyright (C) 2005 by egnite Software GmbH. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * For additional information see http://www.ethernut.de/
 */

#include <cfg/fs.h>

#include <sys/types.h>
#include <sys/file.h>
#include <sys/device.h>


typedef struct __attribute__ ((packed)) _PHATVBR {
    uint8_t boot_jump[3];
    uint8_t boot_oem[8];
    uint16_t bios_sectsz;
    uint8_t bios_clustsz;
    uint16_t bios_rsvd_sects;
    uint8_t bios_ntabs;
    uint16_t bios_rootsz;
    uint16_t bios_volsz;
    uint8_t bios_media;
    uint16_t bios_tabsz;
    uint16_t bios_sects_p_trk;
    uint16_t bios_heads;
    uint32_t bios_sects_hidd;
    uint32_t bios_volsz_big;

    uint32_t bios_tabsz_big;
    uint16_t bios_xflags;
    uint16_t bios_fsver;
    uint32_t bios_root_clust;
    uint16_t bios_fsinfo;
    uint16_t bios_boot_bak;
    uint8_t bios_rsvd32[12];

    uint8_t boot_drive;
    uint8_t boot_rsvd_nt;
    uint8_t boot_xsig;
    uint32_t boot_vol_id;
    uint8_t boot_vol_lbl[11];
    uint8_t boot_vol_fs[8];
} PHATVBR;

typedef struct _PHATSECTBUF {
    uint8_t *sect_data;
    uint32_t sect_num;
    int sect_dirty;
    int sect_lock;
} PHATSECTBUF;

typedef struct _PHATVOL {
    int vol_type;
    uint32_t vol_numfree;
    uint32_t vol_nxtfree;
#if PHAT_SECTOR_BUFFERS
    PHATSECTBUF vol_buf[PHAT_SECTOR_BUFFERS];
    int vol_usenext;
#else
    PHATSECTBUF vol_buf[1];
#endif

    HANDLE vol_fsmutex;
    HANDLE vol_iomutex;
    unsigned int vol_sectsz;
    unsigned int vol_clustsz;

    uint32_t vol_tabsz;
    uint32_t vol_tab_sect[2];

    unsigned int vol_rootsz;
    uint32_t vol_root_sect;
    uint32_t vol_root_clust;

    uint32_t vol_last_clust;
    uint32_t vol_data_sect;
} PHATVOL;

extern int PhatVolMount(NUTDEVICE * dev, NUTFILE * blkmnt, uint8_t part_type);
extern int PhatVolUnmount(NUTDEVICE * dev);
extern uint32_t PhatClusterSector(NUTFILE * nfp, uint32_t clust);

#endif