blob: 85e9b7b9971ddd08825bad96b9a60a1b0894d680 (
plain) (
blame)
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
106
107
108
109
110
111
|
#pragma once
#include <vfs.h>
#define ISO9660_VDT_BOOT 0
#define ISO9660_VDT_PRIMARY 1
#define ISO9660_VDT_SUPPLEMENTARY 2
#define ISO9660_VDT_PARTITION 3
#define ISO9660_VDT_TERMINATOR 255
#define ISO9660_DR_FLAG_DIR (1 << 1)
typedef struct {
uint32_t lsb, msb;
} uint32_lsb_msb_t;
typedef struct {
uint16_t lsb, msb;
} uint16_lsb_msb_t;
typedef struct {
uint8_t years_since_1990;
uint8_t month;
uint8_t day;
uint8_t hour;
uint8_t minute;
uint8_t second;
uint8_t gmt_offset;
} iso9660_dr_date_t;
typedef struct { // Directory record
uint8_t len; // length of the record
uint8_t ear_len; // length of extended attribute record
uint32_lsb_msb_t lba_loc; // location of extent
uint32_lsb_msb_t size; // size of extent
iso9660_dr_date_t date;
uint8_t flags;
uint8_t interleave_unit_size;
uint8_t interleave_gap_size;
uint16_lsb_msb_t vol_seq_num;
uint8_t name_len;
char name[1]; // we want sizeof(iso9660_dr_t) == 34
} __attribute__((packed)) iso9660_dr_t;
typedef struct { // Boot record
uint8_t type;
char ident[5];
uint8_t version; // always 1
char sys_ident[32];
char boot_ident[32];
char reserved[1977];
} __attribute__((packed)) iso9660_bootrecord_t;
typedef struct { // Primary volume descriptor
uint8_t type;
char ident[5];
uint8_t version; // always 1
uint8_t unused0;
char sys_ident[32];
char vol_ident[32];
uint8_t unused1[8];
uint32_lsb_msb_t volume_size;
uint8_t unused2[32];
uint16_lsb_msb_t volume_set_size, volume_seq_number;
uint16_lsb_msb_t block_size;
uint32_lsb_msb_t path_table_size;
uint32_t lpt_loc, olpt_loc, mpt_loc, ompt_loc; // location of path tables
iso9660_dr_t root_directory;
// more fields (not interesting...)
} __attribute__((packed)) iso9660_pvd_t;
typedef struct {
uint8_t type;
char ident[5];
uint8_t version; // always 1
} __attribute__((packed)) iso9660_vdt_terminator_t; // volume descriptor table terminator
typedef union {
iso9660_bootrecord_t boot;
iso9660_pvd_t prim;
iso9660_vdt_terminator_t term;
char buf[2048];
} iso9660_vdt_entry_t;
typedef struct {
iso9660_pvd_t vol_descr;
fs_handle_t *disk;
bool use_lowercase; // lowercase all names
} iso9660_fs_t;
typedef struct {
iso9660_dr_t dr;
iso9660_fs_t *fs;
} iso9660_node_t;
typedef struct {
iso9660_node_t *n;
size_t pos;
char buffer[2048];
} iso9660_dh_t; // handle to an open directory
void register_iso9660_driver();
/* vim: set ts=4 sw=4 tw=0 noet :*/
|
