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msdos_fs.h

#define MSDOS_SUPER_MAGIC 0x4d44 /* MD */

#define packed __attribute__ ((packed))

#define p packed

struct msdos_boot_sector {
      char jump[3] p;               /* 0  - Boot strap short or near jump */
      char banner[8] p;               /* 3  - Name - can be used to special case
                                        partition manager volumes */
      unsigned short sector_size p;   /* 11 - bytes per logical sector */
      unsigned char cluster_size p;   /* 13 - sectors/cluster */
      unsigned short res_sect p;      /* 14 - reserved sectors */
      unsigned char fats p;           /* 16 - number of FATs */
      unsigned short dir_entries p;   /* 17 - root directory entries */
      unsigned short sectors p;       /* 19 - number of sectors */
      unsigned char media p;          /* 21 - media code (unused) */
      unsigned short fat_length p;    /* 22 - sectors/FAT */
      unsigned short secs_track p;    /* 24 - sectors per track */
      unsigned short heads p;         /* 26 - number of heads */
      unsigned long hidden p;         /* 28 - hidden sectors (unused) */
      unsigned long total_sect p;     /* 32 - number of sectors (if sectors == 0) */
      unsigned char physdrive p;    /* 36 physical drive ? */
      unsigned char _reserved p;    /* 37 reserved */
      unsigned char dos4 p;         /* 38 DOS > 4.0 diskette */
      unsigned long serial p;             /* 39 serial number */
      unsigned char label[11] p;    /* 43 disk label */
      unsigned char fat_type[8] p;  /* 54 FAT type */
#ifdef USE_2M
      unsigned char res_2m p;       /* 62 reserved by 2M */
      unsigned char CheckSum p;     /* 63 2M checksum (not used) */
      unsigned char fmt_2mf p;      /* 64 2MF format version */
      unsigned char wt p;           /* 65 1 if write track after format */
      unsigned char rate_0 p;       /* 66 data transfer rate on track 0 */
      unsigned char rate_any p;     /* 67 data transfer rate on track<>0 */
      unsigned short BootP p;       /* 68 offset to boot program */
      unsigned short Infp0 p;       /* 70 T1: information for track 0 */
      unsigned short InfpX p;       /* 72 T2: information for track<>0 */
      unsigned short InfTm p;       /* 74 T3: track sectors size table */
      unsigned char junk[126 - 76] p;     /* 76 remaining data */
#else
      unsigned char junk[126 - 62] p; /* 76 remaining data */
#endif
        unsigned short bootid p;        /* 510 should be 0xAA55 */
};

#undef p

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