102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
#ifndef MTOOLS_DEVICE_H
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#define MTOOLS_DEVICE_H
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/* Copyright 2021 Alain Knaff.
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* This file is part of mtools.
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*
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* Mtools is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Mtools is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Mtools. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* Functions needed to work with struct device */
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#include "llong.h"
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/* Stuff related to particular device definitions are in devices.c
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(note the plural) */
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#define SCSI_FLAG 0x001u
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#define PRIV_FLAG 0x002u
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#define NOLOCK_FLAG 0x004u
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#define USE_XDF_FLAG 0x008u
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#define MFORMAT_ONLY_FLAG 0x010u
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#define VOLD_FLAG 0x020u
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#define FLOPPYD_FLAG 0x040u
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#define FILTER_FLAG 0x080u
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#define SWAP_FLAG 0x100u
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#define IS_SCSI(x) ((x) && ((x)->misc_flags & SCSI_FLAG))
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#define IS_PRIVILEGED(x) ((x) && ((x)->misc_flags & PRIV_FLAG))
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#define IS_NOLOCK(x) ((x) && ((x)->misc_flags & NOLOCK_FLAG))
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#define IS_MFORMAT_ONLY(x) ((x) && ((x)->misc_flags & MFORMAT_ONLY_FLAG))
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#define SHOULD_USE_VOLD(x) ((x)&& ((x)->misc_flags & VOLD_FLAG))
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#define SHOULD_USE_XDF(x) ((x)&& ((x)->misc_flags & USE_XDF_FLAG))
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#define DO_SWAP(x) ((x) && ((x)->misc_flags & SWAP_FLAG))
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typedef struct device {
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const char *name; /* full path to device */
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char drive; /* the drive letter */
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int fat_bits; /* FAT encoding scheme */
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int mode; /* any special open() flags */
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unsigned int tracks; /* tracks */
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uint16_t heads; /* heads */
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uint16_t sectors; /* sectors */
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unsigned int hidden; /* number of hidden sectors. Used for
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* mformatting partitioned devices */
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off_t offset; /* skip this many bytes */
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unsigned int partition;
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unsigned int misc_flags;
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/* Linux only stuff */
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uint8_t ssize;
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unsigned int use_2m;
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char *precmd; /* command to be executed before opening
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* the drive */
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/* internal variables */
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int file_nr; /* used during parsing */
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unsigned int blocksize; /* size of disk block in bytes */
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unsigned int codepage; /* codepage for shortname encoding */
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const char *data_map;
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uint32_t tot_sectors; /* Amount of total sectors, more
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* precise than tracks (in case of
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* partitions which may take up parts
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* of a track) */
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uint16_t sector_size; /* Non-default sector size */
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const char *cfg_filename; /* used for debugging purposes */
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} device_t;
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extern struct device *devices;
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extern struct device const_devices[];
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extern const unsigned int nr_const_devices;
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int lock_dev(int fd, int mode, struct device *dev);
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void precmd(struct device *dev);
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int check_if_sectors_fit(uint32_t tot_sectors, mt_off_t maxBytes,
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uint32_t sectorSize, char *errmsg);
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int chs_to_totsectors(struct device *dev, char *errmsg);
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#endif
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