1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
#ifndef MTOOLS_DEVICE_H
#define MTOOLS_DEVICE_H
/* Copyright 2021 Alain Knaff.
* This file is part of mtools.
*
* Mtools 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 3 of the License, or
* (at your option) any later version.
*
* Mtools 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 Mtools. If not, see <http://www.gnu.org/licenses/>.
*/
/* Functions needed to work with struct device */
#include "llong.h"
/* Stuff related to particular device definitions are in devices.c
(note the plural) */
#define SCSI_FLAG 0x001u
#define PRIV_FLAG 0x002u
#define NOLOCK_FLAG 0x004u
#define USE_XDF_FLAG 0x008u
#define MFORMAT_ONLY_FLAG 0x010u
#define VOLD_FLAG 0x020u
#define FLOPPYD_FLAG 0x040u
#define FILTER_FLAG 0x080u
#define SWAP_FLAG 0x100u
#define IS_SCSI(x) ((x) && ((x)->misc_flags & SCSI_FLAG))
#define IS_PRIVILEGED(x) ((x) && ((x)->misc_flags & PRIV_FLAG))
#define IS_NOLOCK(x) ((x) && ((x)->misc_flags & NOLOCK_FLAG))
#define IS_MFORMAT_ONLY(x) ((x) && ((x)->misc_flags & MFORMAT_ONLY_FLAG))
#define SHOULD_USE_VOLD(x) ((x)&& ((x)->misc_flags & VOLD_FLAG))
#define SHOULD_USE_XDF(x) ((x)&& ((x)->misc_flags & USE_XDF_FLAG))
#define DO_SWAP(x) ((x) && ((x)->misc_flags & SWAP_FLAG))
typedef struct device {
const char *name; /* full path to device */
char drive; /* the drive letter */
int fat_bits; /* FAT encoding scheme */
int mode; /* any special open() flags */
unsigned int tracks; /* tracks */
uint16_t heads; /* heads */
uint16_t sectors; /* sectors */
unsigned int hidden; /* number of hidden sectors. Used for
* mformatting partitioned devices */
mt_off_t offset; /* skip this many bytes */
unsigned int partition;
unsigned int misc_flags;
/* Linux only stuff */
uint8_t ssize;
unsigned int use_2m;
char *precmd; /* command to be executed before opening
* the drive */
/* internal variables */
int file_nr; /* used during parsing */
unsigned int blocksize; /* size of disk block in bytes */
unsigned int codepage; /* codepage for shortname encoding */
const char *data_map;
uint32_t tot_sectors; /* Amount of total sectors, more
* precise than tracks (in case of
* partitions which may take up parts
* of a track) */
uint16_t sector_size; /* Non-default sector size */
char *postcmd; /* command to be executed after closing the
* drive */
const char *cfg_filename; /* used for debugging purposes */
} device_t;
extern struct device *devices;
extern struct device const_devices[];
extern const unsigned int nr_const_devices;
int lock_dev(int fd, int mode, struct device *dev);
void precmd(struct device *dev);
void postcmd(const char *cmd);
int check_if_sectors_fit(uint32_t tot_sectors, mt_off_t maxBytes,
uint32_t sectorSize, char *errmsg);
int chs_to_totsectors(struct device *dev, char *errmsg);
#endif
|
