blob: d8c103f4dbd6c92835e9312708345047e6d45896 (
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
|
#include <debug.h>
#include <fs/iso9660.h>
static bool iso9660_make(fs_handle_t *source, const char* opts, fs_t *t);
static fs_driver_ops_t iso9660_driver_ops = {
.make = iso9660_make,
};
void register_iso9660_driver() {
ASSERT(sizeof(iso9660_dr_date_t) == 7);
ASSERT(sizeof(iso9660_dr_t) == 34);
ASSERT(sizeof(iso9660_vdt_entry_t) == 2048);
register_fs_driver("iso9660", &iso9660_driver_ops);
}
// ============================== //
// FILESYSTEM DETECTION AND SETUP //
// ============================== //
static bool iso9660_make(fs_handle_t *source, const char* opts, fs_t *t) {
stat_t st;
if (!file_stat(source, &st)) return false;
if ((st.type & FT_BLOCKDEV) == 0) return false;
int block_size = file_ioctl(source, IOCTL_BLOCKDEV_GET_BLOCK_SIZE, 0);
if (block_size != 2048) return false;
// Look up primary volume descriptor entry
iso9660_vdt_entry_t ent;
int ent_sect = 0x10;
while (true) {
if (file_read(source, ent_sect * 2048, 2048, ent.buf) != 2048) return false;
if (ent.boot.type == ISO9660_VDT_PRIMARY) break; // ok got it!
if (ent.boot.type == ISO9660_VDT_TERMINATOR) return false; // doesn't exist ?
ent_sect++;
}
return false; // TODO
}
/* vim: set ts=4 sw=4 tw=0 noet :*/
|
