Initial working, but messy and incomplete, cd rom session disk scanner module
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2326 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Tyler Dauwalder
parent
22aef14b93
commit
4267a32ec4
461
src/add-ons/kernel/disk_scanner/session/cdrom.c
Normal file
461
src/add-ons/kernel/disk_scanner/session/cdrom.c
Normal file
@ -0,0 +1,461 @@
|
|||||||
|
// cdrom.c
|
||||||
|
|
||||||
|
#include <errno.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <string.h>
|
||||||
|
#include <unistd.h>
|
||||||
|
|
||||||
|
#include <ByteOrder.h>
|
||||||
|
#include <fs_device.h>
|
||||||
|
#include <KernelExport.h>
|
||||||
|
#include <scsi.h>
|
||||||
|
#include <disk_scanner/session.h>
|
||||||
|
|
||||||
|
#define TRACE(x)
|
||||||
|
//#define TRACE(x) dprintf x
|
||||||
|
static void dump_full_table_of_contents(uchar *data, uint16 data_length);
|
||||||
|
#define ISO9660_SESSION_MODULE_NAME "disk_scanner/session/cdrom/v1"
|
||||||
|
|
||||||
|
static const char *kModuleDebugName = "session/cdrom";
|
||||||
|
|
||||||
|
/*! \brief raw_device_command flags
|
||||||
|
|
||||||
|
This is the only combination of flags that works on my system. :-)
|
||||||
|
*/
|
||||||
|
const uint8 kScsiFlags = B_RAW_DEVICE_DATA_IN
|
||||||
|
| B_RAW_DEVICE_REPORT_RESIDUAL
|
||||||
|
| B_RAW_DEVICE_SHORT_READ_VALID;
|
||||||
|
|
||||||
|
/*! \brief Timeout value used when making scsi commands
|
||||||
|
*/
|
||||||
|
const uint32 kScsiTimeout = 1000000;
|
||||||
|
|
||||||
|
//! SCSI "READ TOC/PMA/ATIP" command struct
|
||||||
|
typedef struct {
|
||||||
|
uint8 command; //!< 0x43 == READ TOC/PMA/ATIP
|
||||||
|
uint8 reserved2:1,
|
||||||
|
msf:1, //!< addressing format: 0 == LBA, 1 == MSF; try lba first, then msf if that fails
|
||||||
|
reserved1:3,
|
||||||
|
reserved0:3;
|
||||||
|
uint8 format:4, //!< sub-command: 0x0 == "TOC", 0x1 == "Session Info", 0x2 == "Full TOC"
|
||||||
|
reserved3:4;
|
||||||
|
uint8 reserved4;
|
||||||
|
uint8 reserved5;
|
||||||
|
uint8 reserved6;
|
||||||
|
uint8 number; //!< track/session number
|
||||||
|
uint16 length; //!< length of data buffer passed in raw_device_command.data; BIG-ENDIAN!!!
|
||||||
|
uint8 control; //!< control codes; 0x0 should be fine
|
||||||
|
} __attribute__((packed)) scsi_table_of_contents_command;
|
||||||
|
|
||||||
|
// formats of interest
|
||||||
|
const uint8 kTableOfContentsFormat = 0x00;
|
||||||
|
const uint8 kSessionFormat = 0x01;
|
||||||
|
const uint8 kFullTableOfContentsFormat = 0x10;
|
||||||
|
|
||||||
|
/*! \brief Minutes:Seconds:Frames format address
|
||||||
|
*/
|
||||||
|
typedef struct {
|
||||||
|
uint8 reserved;
|
||||||
|
uint8 minutes;
|
||||||
|
uint8 seconds;
|
||||||
|
uint8 frames;
|
||||||
|
} msf_address;
|
||||||
|
|
||||||
|
#define CDROM_FRAMES_PER_SECOND (75)
|
||||||
|
#define CDROM_FRAMES_PER_MINUTE (CDROM_FRAMES_PER_SECOND*60)
|
||||||
|
|
||||||
|
static
|
||||||
|
inline
|
||||||
|
msf_address
|
||||||
|
make_msf_address(uint8 minutes, uint8 seconds, uint8 frames)
|
||||||
|
{
|
||||||
|
msf_address result;
|
||||||
|
result.reserved = 0;
|
||||||
|
result.minutes = minutes;
|
||||||
|
result.seconds = seconds;
|
||||||
|
result.frames = frames;
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
static
|
||||||
|
inline
|
||||||
|
uint32
|
||||||
|
msf_to_lba(msf_address msf)
|
||||||
|
{
|
||||||
|
return (CDROM_FRAMES_PER_MINUTE * msf.minutes)
|
||||||
|
+ (CDROM_FRAMES_PER_SECOND * msf.seconds)
|
||||||
|
+ msf.frames - 150;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*! \brief Header for data returned by all formats of SCSI
|
||||||
|
"READ TOC/PMA/ATIP" command.
|
||||||
|
*/
|
||||||
|
typedef struct {
|
||||||
|
uint16 length; //!< Length of data in reply (not including these 2 bytes); BIG ENDIAN!!!
|
||||||
|
uint8 first; //!< First track/session in reply
|
||||||
|
uint8 last; //!< Last track/session in reply
|
||||||
|
} cdrom_table_of_contents_header;
|
||||||
|
|
||||||
|
/*! Type of entries returned by "READ TOC/PMA/ATIP" when called with format
|
||||||
|
\c kTableOfContentsFormat == 0x00
|
||||||
|
*/
|
||||||
|
typedef struct {
|
||||||
|
uint8 reserved0;
|
||||||
|
uint8 control:4,
|
||||||
|
adr:4;
|
||||||
|
uint8 track_number;
|
||||||
|
uint8 reserved1;
|
||||||
|
uint32 address;
|
||||||
|
} cdrom_table_of_contents_entry;
|
||||||
|
|
||||||
|
/*! Type of entries returned by "READ TOC/PMA/ATIP" when called with format
|
||||||
|
\c kFullTableOfContentsFormat == 0x10
|
||||||
|
*/
|
||||||
|
typedef struct {
|
||||||
|
uint8 session;
|
||||||
|
uint8 control:4,
|
||||||
|
adr:4;
|
||||||
|
uint8 tno;
|
||||||
|
uint8 point;
|
||||||
|
uint8 minutes;
|
||||||
|
uint8 seconds;
|
||||||
|
uint8 frames;
|
||||||
|
uint8 zero;
|
||||||
|
uint8 pminutes;
|
||||||
|
uint8 pseconds;
|
||||||
|
uint8 pframes;
|
||||||
|
} cdrom_full_table_of_contents_entry;
|
||||||
|
|
||||||
|
|
||||||
|
// std_ops
|
||||||
|
static
|
||||||
|
status_t
|
||||||
|
std_ops(int32 op, ...)
|
||||||
|
{
|
||||||
|
TRACE(("%s: std_ops(0x%lx)\n", kModuleDebugName, op));
|
||||||
|
switch(op) {
|
||||||
|
case B_MODULE_INIT:
|
||||||
|
case B_MODULE_UNINIT:
|
||||||
|
return B_OK;
|
||||||
|
}
|
||||||
|
return B_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
// read_block
|
||||||
|
static
|
||||||
|
status_t
|
||||||
|
read_block(int fd, off_t offset, size_t size, uchar **block)
|
||||||
|
{
|
||||||
|
status_t error = (block && size > 0 ? B_OK : B_BAD_VALUE);
|
||||||
|
if (error == B_OK) {
|
||||||
|
*block = malloc(size);
|
||||||
|
if (*block) {
|
||||||
|
if (read_pos(fd, offset, *block, size) != (ssize_t)size) {
|
||||||
|
error = errno;
|
||||||
|
if (error == B_OK)
|
||||||
|
error = B_ERROR;
|
||||||
|
free(*block);
|
||||||
|
*block = NULL;
|
||||||
|
}
|
||||||
|
} else
|
||||||
|
error = B_NO_MEMORY;
|
||||||
|
}
|
||||||
|
return error;
|
||||||
|
}
|
||||||
|
|
||||||
|
static
|
||||||
|
void
|
||||||
|
dump_scsi_command(raw_device_command *cmd) {
|
||||||
|
int i;
|
||||||
|
int j;
|
||||||
|
scsi_table_of_contents_command *scsi_command = (scsi_table_of_contents_command*)(&(cmd->command));
|
||||||
|
|
||||||
|
for (i = 0; i < cmd->command_length; i++)
|
||||||
|
TRACE(("%.2x,", cmd->command[i]));
|
||||||
|
TRACE(("\n"));
|
||||||
|
|
||||||
|
TRACE(("raw_device_command:\n"));
|
||||||
|
TRACE((" command:\n"));
|
||||||
|
TRACE((" command = %d (0x%.2x)\n", scsi_command->command, scsi_command->command));
|
||||||
|
TRACE((" msf = %d\n", scsi_command->msf));
|
||||||
|
TRACE((" format = %d (0x%.2x)\n", scsi_command->format, scsi_command->format));
|
||||||
|
TRACE((" number = %d\n", scsi_command->number));
|
||||||
|
TRACE((" length = %d\n", B_BENDIAN_TO_HOST_INT16(scsi_command->length)));
|
||||||
|
TRACE((" control = %d\n", scsi_command->control));
|
||||||
|
TRACE((" command_length = %ld\n", cmd->command_length));
|
||||||
|
TRACE((" flags = %ld\n", cmd->flags));
|
||||||
|
TRACE((" scsi_status = 0x%lx\n", cmd->scsi_status));
|
||||||
|
TRACE((" cam_status = 0x%lx\n", cmd->cam_status));
|
||||||
|
TRACE((" data = %p\n", cmd->data));
|
||||||
|
TRACE((" data_length = %ld\n", cmd->data_length));
|
||||||
|
TRACE((" sense_data = %p\n", cmd->sense_data));
|
||||||
|
TRACE((" sense_data_length = %ld\n", cmd->sense_data_length));
|
||||||
|
TRACE((" timeout = %ld\n", cmd->timeout));
|
||||||
|
TRACE(("data dump:\n"));
|
||||||
|
for (j = 0; j < 2048; j++) {//cmd->data_length; j++) {
|
||||||
|
uchar c = ((uchar*)cmd->data)[j];
|
||||||
|
|
||||||
|
if (('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || ('0' <= c && c <= '9'))
|
||||||
|
TRACE(("\\%c,", c));
|
||||||
|
else
|
||||||
|
TRACE(("%.2x,", c));
|
||||||
|
}
|
||||||
|
TRACE(("\n"));
|
||||||
|
TRACE(("sense_data dump:\n"));
|
||||||
|
for (j = 0; j < cmd->sense_data_length; j++) {
|
||||||
|
uchar c = ((uchar*)cmd->sense_data)[j];
|
||||||
|
if (('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || ('0' <= c && c <= '9'))
|
||||||
|
TRACE(("%c", c));
|
||||||
|
else if (c == 0)
|
||||||
|
TRACE(("_"));
|
||||||
|
else
|
||||||
|
TRACE(("-"));
|
||||||
|
}
|
||||||
|
TRACE(("\n"));
|
||||||
|
}
|
||||||
|
|
||||||
|
// cdrom_identify
|
||||||
|
static
|
||||||
|
bool
|
||||||
|
cdrom_session_identify(int deviceFD, off_t deviceSize, int32 blockSize)
|
||||||
|
{
|
||||||
|
device_geometry geometry;
|
||||||
|
bool result = false;
|
||||||
|
if (ioctl(deviceFD, B_GET_GEOMETRY, &geometry) == 0)
|
||||||
|
result = (geometry.device_type == B_CD);
|
||||||
|
else
|
||||||
|
dprintf("WARNING: %s: Unable to get device geometry\n", kModuleDebugName);
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
// cdrom_session_get_nth_info
|
||||||
|
static
|
||||||
|
status_t
|
||||||
|
read_table_of_contents(int deviceFD, uint32 first_session, uchar *buffer,
|
||||||
|
uint16 buffer_length, bool msf)
|
||||||
|
{
|
||||||
|
raw_device_command raw_command;
|
||||||
|
scsi_table_of_contents_command *scsi_command = NULL;
|
||||||
|
const uint32 sense_data_length = 1024;
|
||||||
|
uchar sense_data[sense_data_length];
|
||||||
|
status_t error = buffer ? B_OK : B_BAD_VALUE;
|
||||||
|
scsi_table_of_contents_command cmdo;
|
||||||
|
|
||||||
|
TRACE(("%s: read_table_of_contents: (%d, %p, %ld)\n", kModuleDebugName,
|
||||||
|
deviceFD, buffer, buffer_length));
|
||||||
|
|
||||||
|
if (error)
|
||||||
|
return error;
|
||||||
|
|
||||||
|
memset(raw_command.command, 0, 16);
|
||||||
|
scsi_command = (scsi_table_of_contents_command*)(raw_command.command);
|
||||||
|
cmdo.command = 0x43;
|
||||||
|
cmdo.msf = 0;
|
||||||
|
cmdo.format = 2;
|
||||||
|
cmdo.number = first_session;
|
||||||
|
cmdo.length = B_HOST_TO_BENDIAN_INT16(buffer_length);
|
||||||
|
cmdo.control = 0;
|
||||||
|
cmdo.reserved0 = cmdo.reserved1 = cmdo.reserved2 = cmdo.reserved3 = cmdo.reserved4
|
||||||
|
= cmdo.reserved5 = cmdo.reserved6 = 0;
|
||||||
|
|
||||||
|
/* scsi_command->command = 0x43;
|
||||||
|
scsi_command->msf = msf;
|
||||||
|
dprintf("format == 0x%lx\n", scsi_command->format);
|
||||||
|
scsi_command->format = 0x10;//kFullTableOfContentsFormat;
|
||||||
|
dprintf("format == 0x%lx\n", scsi_command->format);
|
||||||
|
scsi_command->number = 0;
|
||||||
|
scsi_command->length = B_HOST_TO_BENDIAN_INT16(buffer_length);
|
||||||
|
scsi_command->control = 0;
|
||||||
|
scsi_command->reserved0 = scsi_command->reserved1 = scsi_command->reserved2
|
||||||
|
= scsi_command->reserved3 = scsi_command->reserved4
|
||||||
|
= scsi_command->reserved5 = scsi_command->reserved6 = 0;
|
||||||
|
*/
|
||||||
|
memcpy(raw_command.command, &cmdo, sizeof(cmdo));
|
||||||
|
raw_command.command_length = 10;
|
||||||
|
raw_command.flags = kScsiFlags;
|
||||||
|
raw_command.scsi_status = 0;
|
||||||
|
raw_command.cam_status = 0;
|
||||||
|
raw_command.data = buffer;
|
||||||
|
raw_command.data_length = buffer_length;
|
||||||
|
memset(raw_command.data, 0, raw_command.data_length);
|
||||||
|
raw_command.sense_data = sense_data;
|
||||||
|
raw_command.sense_data_length = sense_data_length;
|
||||||
|
memset(raw_command.sense_data, 0, raw_command.sense_data_length);
|
||||||
|
raw_command.timeout = kScsiTimeout;
|
||||||
|
|
||||||
|
dump_scsi_command((uchar*)&raw_command);
|
||||||
|
if (ioctl(deviceFD, B_RAW_DEVICE_COMMAND, &raw_command) == 0) {
|
||||||
|
dump_scsi_command((uchar*)&raw_command);
|
||||||
|
if (raw_command.scsi_status == 0 && raw_command.cam_status == 1) {
|
||||||
|
// SUCCESS!!!
|
||||||
|
// dump_full_table_of_contents(buffer, buffer_length);
|
||||||
|
} else {
|
||||||
|
error = B_FILE_ERROR;
|
||||||
|
TRACE(("%s: scsi ioctl succeeded, but scsi command failed\n",
|
||||||
|
kModuleDebugName));
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
error = errno;
|
||||||
|
TRACE(("%s: scsi command failed with error 0x%lx\n", kModuleDebugName,
|
||||||
|
error));
|
||||||
|
}
|
||||||
|
|
||||||
|
return error;
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
static
|
||||||
|
void
|
||||||
|
dump_full_table_of_contents(uchar *data, uint16 data_length)
|
||||||
|
{
|
||||||
|
cdrom_table_of_contents_header *header;
|
||||||
|
cdrom_full_table_of_contents_entry *entries;
|
||||||
|
int i, count;
|
||||||
|
|
||||||
|
header = (cdrom_table_of_contents_header*)data;
|
||||||
|
entries = (cdrom_full_table_of_contents_entry*)(data+4);
|
||||||
|
header->length = B_BENDIAN_TO_HOST_INT16(header->length);
|
||||||
|
if (data_length < header->length) {
|
||||||
|
TRACE(("dump_full_table_of_contents: warning, data buffer not large enough (%ld < %ld)\n",
|
||||||
|
data_length, header->length));
|
||||||
|
header->length = data_length;
|
||||||
|
}
|
||||||
|
|
||||||
|
TRACE(("header:\n"));
|
||||||
|
TRACE((" length = %d\n", header->length));
|
||||||
|
TRACE((" first = %d\n", header->first));
|
||||||
|
TRACE((" last = %d\n", header->last));
|
||||||
|
|
||||||
|
count = (header->length-2) / sizeof(cdrom_full_table_of_contents_entry);
|
||||||
|
TRACE(("\n"));
|
||||||
|
TRACE(("entry count = %d\n", count));
|
||||||
|
TRACE(("\n"));
|
||||||
|
|
||||||
|
for (i = 0; i < count; i++) {
|
||||||
|
TRACE(("entry #%d:\n", i));
|
||||||
|
TRACE((" session = %d\n", entries[i].session));
|
||||||
|
TRACE((" adr = %d\n", entries[i].adr));
|
||||||
|
TRACE((" control = %d\n", entries[i].control));
|
||||||
|
TRACE((" tno = %d\n", entries[i].tno));
|
||||||
|
TRACE((" point = %d (0x%.2x)\n", entries[i].point, entries[i].point));
|
||||||
|
TRACE((" minutes = %d\n", entries[i].minutes));
|
||||||
|
TRACE((" frames = %d\n", entries[i].seconds));
|
||||||
|
TRACE((" seconds = %d\n", entries[i].frames));
|
||||||
|
TRACE((" zero = %d\n", entries[i].zero));
|
||||||
|
TRACE((" pminutes = %d\n", entries[i].pminutes));
|
||||||
|
TRACE((" pseconds = %d\n", entries[i].pseconds));
|
||||||
|
TRACE((" pframes = %d\n", entries[i].pframes));
|
||||||
|
TRACE((" lba = %ld\n", msf_to_lba(make_msf_address(entries[i].pminutes,
|
||||||
|
entries[i].pseconds, entries[i].pframes))));
|
||||||
|
TRACE(("\n"));
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
// cdrom_get_nth_info
|
||||||
|
static
|
||||||
|
status_t
|
||||||
|
cdrom_session_get_nth_info(int deviceFD, int32 index, off_t deviceSize,
|
||||||
|
int32 blockSize, struct session_info *sessionInfo)
|
||||||
|
{
|
||||||
|
status_t error = sessionInfo && index >= 0 ? B_OK : B_BAD_VALUE;
|
||||||
|
uchar data[2048];
|
||||||
|
int32 session = index+1;
|
||||||
|
off_t start_lba = 0;
|
||||||
|
off_t end_lba = 0;
|
||||||
|
|
||||||
|
TRACE(("%s: get_nth_info(%d, %ld, %lld, %ld, %p)\n", kModuleDebugName,
|
||||||
|
deviceFD, index, deviceSize, blockSize, sessionInfo));
|
||||||
|
|
||||||
|
// As with identify(), this is just a bogus function that
|
||||||
|
// treats the whole device as a single session.
|
||||||
|
if (!error) {
|
||||||
|
error = read_table_of_contents(deviceFD, index+1, data, 2048,
|
||||||
|
false);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!error) {
|
||||||
|
cdrom_table_of_contents_header *header;
|
||||||
|
cdrom_full_table_of_contents_entry *entries;
|
||||||
|
int i, count;
|
||||||
|
int trace = 0;
|
||||||
|
int first_track = session;
|
||||||
|
|
||||||
|
header = (cdrom_table_of_contents_header*)data;
|
||||||
|
entries = (cdrom_full_table_of_contents_entry*)(data+4);
|
||||||
|
header->length = B_BENDIAN_TO_HOST_INT16(header->length);
|
||||||
|
|
||||||
|
count = (header->length-2) / sizeof(cdrom_full_table_of_contents_entry);
|
||||||
|
|
||||||
|
// Check for a valid session index
|
||||||
|
if (session < header->first || session > header->last)
|
||||||
|
error = B_ENTRY_NOT_FOUND;
|
||||||
|
|
||||||
|
if (!error) {
|
||||||
|
for (i = 0; i < count; i++) {
|
||||||
|
switch (entries[i].point) {
|
||||||
|
case 0xa0:
|
||||||
|
// PMin holds first track in session
|
||||||
|
if (entries[i].session == session)
|
||||||
|
first_track = entries[i].pminutes;
|
||||||
|
break;
|
||||||
|
case 0xa2:
|
||||||
|
// PMSF holds end of session
|
||||||
|
if (entries[i].session == session) {
|
||||||
|
end_lba = msf_to_lba(make_msf_address(entries[i].pminutes,
|
||||||
|
entries[i].pseconds, entries[i].pframes));
|
||||||
|
trace++;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
|
||||||
|
default:
|
||||||
|
if (entries[i].session == session && entries[i].point == first_track) {
|
||||||
|
start_lba = msf_to_lba(make_msf_address(entries[i].pminutes,
|
||||||
|
entries[i].pseconds, entries[i].pframes));
|
||||||
|
trace++;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
if (trace == 2) {
|
||||||
|
TRACE(("%s: found session #%ld info\n", kModuleDebugName, session));
|
||||||
|
sessionInfo->offset = start_lba * blockSize;
|
||||||
|
sessionInfo->size = (end_lba - start_lba) * blockSize;
|
||||||
|
sessionInfo->logical_block_size = blockSize;
|
||||||
|
sessionInfo->index = index;
|
||||||
|
sessionInfo->flags = B_DATA_SESSION; // possibly B_AUDIO_SESSION for audio tracks?
|
||||||
|
// dump_full_table_of_contents(data);
|
||||||
|
} else {
|
||||||
|
dprintf("%s: bad trace: %d\n", kModuleDebugName, trace);
|
||||||
|
error = B_ENTRY_NOT_FOUND;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (error)
|
||||||
|
dprintf("%s: get_nth error 0x%lx\n", kModuleDebugName, error);
|
||||||
|
|
||||||
|
|
||||||
|
return error;
|
||||||
|
}
|
||||||
|
|
||||||
|
static session_module_info cdrom_session_module =
|
||||||
|
{
|
||||||
|
// module_info
|
||||||
|
{
|
||||||
|
ISO9660_SESSION_MODULE_NAME,
|
||||||
|
0, // better B_KEEP_LOADED?
|
||||||
|
std_ops
|
||||||
|
},
|
||||||
|
cdrom_session_identify,
|
||||||
|
cdrom_session_get_nth_info
|
||||||
|
};
|
||||||
|
|
||||||
|
_EXPORT session_module_info *modules[] =
|
||||||
|
{
|
||||||
|
&cdrom_session_module,
|
||||||
|
NULL
|
||||||
|
};
|
||||||
|
|
||||||
Loading…
Reference in New Issue
Block a user