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- /*
- * (C) Copyright 2002
- * Stäubli Faverges - <www.staubli.com>
- * Pierre AUBERT p.aubert@staubli.com
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
- #ifndef _DOS_H_
- #define _DOS_H_
- /* Definitions for Dos diskettes */
- /* General definitions */
- #define SZ_STD_SECTOR 512 /* Standard sector size */
- #define MDIR_SIZE 32 /* Direntry size */
- #define FAT_BITS 12 /* Diskette use 12 bits fat */
- #define MAX_PATH 128 /* Max size of the MSDOS PATH */
- #define MAX_DIR_SECS 64 /* Taille max d'un repertoire (en */
- /* secteurs) */
- /* Misc. definitions */
- #define DELMARK '\xe5'
- #define EXTENDED_BOOT (0x29)
- #define MEDIA_STD (0xf0)
- #define JUMP_0_1 (0xe9)
- #define JUMP_0_2 (0xeb)
- /* Boot size is 256 bytes, but we need to read almost a sector, then
- assume bootsize is 512 */
- #define BOOTSIZE 512
- /* Fat definitions for 12 bits fat */
- #define FAT12_MAX_NB 4086
- #define FAT12_LAST 0x0ff6
- #define FAT12_END 0x0fff
- /* file attributes */
- #define ATTR_READONLY 0x01
- #define ATTR_HIDDEN 0x02
- #define ATTR_SYSTEM 0x04
- #define ATTR_VOLUME 0x08
- #define ATTR_DIRECTORY 0x10
- #define ATTR_ARCHIVE 0x20
- #define ATTR_VSE 0x0f
- /* Name format */
- #define EXTCASE 0x10
- #define BASECASE 0x8
- /* Definition of the boot sector */
- #define BANNER_LG 8
- #define LABEL_LG 11
- typedef struct bootsector
- {
- unsigned char jump [3]; /* 0 Jump to boot code */
- char banner [BANNER_LG]; /* 3 OEM name & version */
- unsigned short secsiz; /* 11 Bytes per sector hopefully 512 */
- unsigned char clsiz; /* 13 Cluster size in sectors */
- unsigned short nrsvsect; /* 14 Number of reserved (boot) sectors */
- unsigned char nfat; /* 16 Number of FAT tables hopefully 2 */
- unsigned short dirents; /* 17 Number of directory slots */
- unsigned short psect; /* 19 Total sectors on disk */
- unsigned char descr; /* 21 Media descriptor=first byte of FAT */
- unsigned short fatlen; /* 22 Sectors in FAT */
- unsigned short nsect; /* 24 Sectors/track */
- unsigned short nheads; /* 26 Heads */
- unsigned int nhs; /* 28 number of hidden sectors */
- unsigned int bigsect; /* 32 big total sectors */
- unsigned char physdrive; /* 36 physical drive ? */
- unsigned char reserved; /* 37 reserved */
- unsigned char dos4; /* 38 dos > 4.0 diskette */
- unsigned int serial; /* 39 serial number */
- char label [LABEL_LG]; /* 43 disk label */
- char fat_type [8]; /* 54 FAT type */
- unsigned char res_2m; /* 62 reserved by 2M */
- unsigned char CheckSum; /* 63 2M checksum (not used) */
- unsigned char fmt_2mf; /* 64 2MF format version */
- unsigned char wt; /* 65 1 if write track after format */
- unsigned char rate_0; /* 66 data transfer rate on track 0 */
- unsigned char rate_any; /* 67 data transfer rate on track<>0 */
- unsigned short BootP; /* 68 offset to boot program */
- unsigned short Infp0; /* 70 T1: information for track 0 */
- unsigned short InfpX; /* 72 T2: information for track<>0 */
- unsigned short InfTm; /* 74 T3: track sectors size table */
- unsigned short DateF; /* 76 Format date */
- unsigned short TimeF; /* 78 Format time */
- unsigned char junk [BOOTSIZE - 80]; /* 80 remaining data */
- } __attribute__ ((packed)) BootSector_t;
- /* Structure d'une entree de repertoire */
- typedef struct directory {
- char name [8]; /* file name */
- char ext [3]; /* file extension */
- unsigned char attr; /* attribute byte */
- unsigned char Case; /* case of short filename */
- unsigned char reserved [9]; /* ?? */
- unsigned char time [2]; /* time stamp */
- unsigned char date [2]; /* date stamp */
- unsigned short start; /* starting cluster number */
- unsigned int size; /* size of the file */
- } __attribute__ ((packed)) Directory_t;
- #define MAX_VFAT_SUBENTRIES 20
- #define VSE_NAMELEN 13
- #define VSE1SIZE 5
- #define VSE2SIZE 6
- #define VSE3SIZE 2
- #define VBUFSIZE ((MAX_VFAT_SUBENTRIES * VSE_NAMELEN) + 1)
- #define MAX_VNAMELEN (255)
- #define VSE_PRESENT 0x01
- #define VSE_LAST 0x40
- #define VSE_MASK 0x1f
- /* Flag used by vfat_lookup */
- #define DO_OPEN 1
- #define ACCEPT_PLAIN 0x20
- #define ACCEPT_DIR 0x10
- #define ACCEPT_LABEL 0x08
- #define SINGLE 2
- #define MATCH_ANY 0x40
- struct vfat_subentry {
- unsigned char id; /* VSE_LAST pour la fin, VSE_MASK */
- /* pour un VSE */
- char text1 [VSE1SIZE * 2]; /* Caracteres encodes sur 16 bits */
- unsigned char attribute; /* 0x0f pour les VFAT */
- unsigned char hash1; /* toujours 0 */
- unsigned char sum; /* Checksum du nom court */
- char text2 [VSE2SIZE * 2]; /* Caracteres encodes sur 16 bits */
- unsigned char sector_l; /* 0 pour les VFAT */
- unsigned char sector_u; /* 0 pour les VFAT */
- char text3 [VSE3SIZE * 2]; /* Caracteres encodes sur 16 bits */
- } __attribute__ ((packed)) ;
- struct vfat_state {
- char name [VBUFSIZE];
- int status; /* is now a bit map of 32 bits */
- int subentries;
- unsigned char sum; /* no need to remember the sum for each */
- /* entry, it is the same anyways */
- } __attribute__ ((packed)) ;
- /* Conversion macros */
- #define DOS_YEAR(dir) (((dir)->date[1] >> 1) + 1980)
- #define DOS_MONTH(dir) (((((dir)->date[1]&0x1) << 3) + ((dir)->date[0] >> 5)))
- #define DOS_DAY(dir) ((dir)->date[0] & 0x1f)
- #define DOS_HOUR(dir) ((dir)->time[1] >> 3)
- #define DOS_MINUTE(dir) (((((dir)->time[1]&0x7) << 3) + ((dir)->time[0] >> 5)))
- #define DOS_SEC(dir) (((dir)->time[0] & 0x1f) * 2)
- #endif
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