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mythcdrom-linux.cpp
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mythcdrom-linux.cpp
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#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h> // ioctls
#include <linux/cdrom.h> // old ioctls for cdrom
#include <scsi/sg.h>
#include <fcntl.h>
#include <errno.h>
#include <stdint.h>
#include <limits.h>
#include <linux/iso_fs.h>
#include <unistd.h>
#include <QDateTime>
#include "mythcdrom.h"
#include "mythcdrom-linux.h"
#include "mythconfig.h" // for HAVE_BIGENDIAN
#include "mythlogging.h"
#include "mythdate.h"
#ifdef USING_LIBUDF
#include <cdio/udf.h>
#endif
#define LOC QString("MythCDROMLinux:")
// On a mixed-mode disc (audio+data), set this to 0 to mount the data portion:
#ifndef ASSUME_WANT_AUDIO
#define ASSUME_WANT_AUDIO 1
#endif
// Some features cannot be detected (reliably) using the standard
// Linux ioctl()s, so we use some direct low-level device queries.
typedef struct cdrom_generic_command CDROMgenericCmd;
// Some structures stolen from the __KERNEL__ section of linux/cdrom.h.
// This contains the result of a GPCMD_GET_EVENT_STATUS_NOTIFICATION.
// It is the joining of a struct event_header and a struct media_event_desc
typedef struct
{
uint16_t data_len[2];
#if HAVE_BIGENDIAN
uint8_t nea : 1;
uint8_t reserved1 : 4;
uint8_t notification_class : 3;
#else
uint8_t notification_class : 3;
uint8_t reserved1 : 4;
uint8_t nea : 1;
#endif
uint8_t supp_event_class;
#if HAVE_BIGENDIAN
uint8_t reserved2 : 4;
uint8_t media_event_code : 4;
uint8_t reserved3 : 6;
uint8_t media_present : 1;
uint8_t door_open : 1;
#else
uint8_t media_event_code : 4;
uint8_t reserved2 : 4;
uint8_t door_open : 1;
uint8_t media_present : 1;
uint8_t reserved3 : 6;
#endif
uint8_t start_slot;
uint8_t end_slot;
} CDROMeventStatus;
// and this is returned by GPCMD_READ_DISC_INFO
typedef struct {
uint16_t disc_information_length;
#if HAVE_BIGENDIAN
uint8_t reserved1 : 3;
uint8_t erasable : 1;
uint8_t border_status : 2;
uint8_t disc_status : 2;
#else
uint8_t disc_status : 2;
uint8_t border_status : 2;
uint8_t erasable : 1;
uint8_t reserved1 : 3;
#endif
uint8_t n_first_track;
uint8_t n_sessions_lsb;
uint8_t first_track_lsb;
uint8_t last_track_lsb;
#if HAVE_BIGENDIAN
uint8_t did_v : 1;
uint8_t dbc_v : 1;
uint8_t uru : 1;
uint8_t reserved2 : 5;
#else
uint8_t reserved2 : 5;
uint8_t uru : 1;
uint8_t dbc_v : 1;
uint8_t did_v : 1;
#endif
uint8_t disc_type;
uint8_t n_sessions_msb;
uint8_t first_track_msb;
uint8_t last_track_msb;
uint32_t disc_id;
uint32_t lead_in;
uint32_t lead_out;
uint8_t disc_bar_code[8];
uint8_t reserved3;
uint8_t n_opc;
} CDROMdiscInfo;
enum CDROMdiscStatus
{
MEDIA_IS_EMPTY = 0x0,
MEDIA_IS_APPENDABLE = 0x1,
MEDIA_IS_COMPLETE = 0x2,
MEDIA_IS_OTHER = 0x3
};
/** \class MythCDROMLinux
*
* Use Linux-specific ioctl()s to detect Audio-CDs,
* changed media, open trays and blank writable media.
*/
class MythCDROMLinux: public MythCDROM
{
public:
MythCDROMLinux(QObject* par, const char* DevicePath, bool SuperMount,
bool AllowEject):
MythCDROM(par, DevicePath, SuperMount, AllowEject) {
}
virtual MythMediaError testMedia(void);
virtual bool mediaChanged(void);
virtual bool checkOK(void);
virtual MythMediaStatus checkMedia(void);
virtual MythMediaError eject(bool open_close = true);
virtual void setSpeed(int speed);
virtual void setSpeed(const char *device, int speed);
virtual bool isSameDevice(const QString &path);
virtual MythMediaError lock(void);
virtual MythMediaError unlock(void);
private:
int driveStatus(void);
bool hasWritableMedia(void);
int SCSIstatus(void);
};
MythCDROM *GetMythCDROMLinux(QObject* par, const char* devicePath,
bool SuperMount, bool AllowEject)
{
return new MythCDROMLinux(par, devicePath, SuperMount, AllowEject);
}
/** \brief Exhaustively determine the status.
*
* If the CDROM is managed by the SCSI driver, then CDROM_DRIVE_STATUS
* as reported by ioctl will always return CDS_TRAY_OPEN if the tray is
* closed with no media. To determine the actual drive status we need
* to ask the drive directly by sending a SCSI packet to the drive.
*/
int MythCDROMLinux::driveStatus()
{
int drive_status = ioctl(m_DeviceHandle, CDROM_DRIVE_STATUS, CDSL_CURRENT);
if (drive_status == -1) // Very unlikely, but we should check
{
LOG(VB_MEDIA, LOG_ERR, LOC + ":driveStatus() - ioctl failed: " + ENO);
return CDS_NO_INFO;
}
if (drive_status == CDS_TRAY_OPEN && m_DevicePath.contains("/dev/scd"))
return SCSIstatus();
return drive_status;
}
/** \brief Is there blank or eraseable media in the drive?
*/
bool MythCDROMLinux::hasWritableMedia()
{
unsigned char buffer[32];
CDROMgenericCmd cgc;
CDROMdiscInfo *di;
memset(buffer, 0, sizeof(buffer));
memset(&cgc, 0, sizeof(cgc));
cgc.cmd[0] = GPCMD_READ_DISC_INFO;
cgc.cmd[8] = sizeof(buffer);
cgc.quiet = 1;
cgc.buffer = buffer;
cgc.buflen = sizeof(buffer);
cgc.data_direction = CGC_DATA_READ;
if (ioctl(m_DeviceHandle, CDROM_SEND_PACKET, &cgc) < 0)
{
LOG(VB_MEDIA, LOG_ERR, LOC +
":hasWritableMedia() - failed to send packet to " + m_DevicePath);
return false;
}
di = (CDROMdiscInfo *) buffer;
switch (di->disc_status)
{
case MEDIA_IS_EMPTY:
return true;
case MEDIA_IS_APPENDABLE:
// It is unlikely that any plugins will support multi-session
// writing, so we treat it just like a finished disc:
case MEDIA_IS_COMPLETE:
return di->erasable;
case MEDIA_IS_OTHER:
;
}
return false;
}
/** \brief Use a SCSI query packet to see if the drive is _really_ open.
*
* Note that in recent kernels, whether you have an IDE/ATA/SATA or SCSI CDROM,
* the drive is managed by the SCSI driver and therefore needs this workaround.
* This code is based on the routine cdrom_get_media_event
* in cdrom.c of the linux kernel
*/
int MythCDROMLinux::SCSIstatus()
{
unsigned char buffer[8];
CDROMgenericCmd cgc;
CDROMeventStatus *es;
memset(buffer, 0, sizeof(buffer));
memset(&cgc, 0, sizeof(cgc));
cgc.cmd[0] = GPCMD_GET_EVENT_STATUS_NOTIFICATION;
cgc.cmd[1] = 1; // Tell us immediately
cgc.cmd[4] = 1 << 4; // notification class of media
cgc.cmd[8] = sizeof(buffer);
cgc.quiet = 1;
cgc.buffer = buffer;
cgc.buflen = sizeof(buffer);
cgc.data_direction = CGC_DATA_READ;
es = (CDROMeventStatus *) buffer;
if ((ioctl(m_DeviceHandle, CDROM_SEND_PACKET, &cgc) < 0)
|| es->nea // drive does not support request
|| (es->notification_class != 0x4)) // notification class mismatch
{
LOG(VB_MEDIA, LOG_ERR, LOC +
":SCSIstatus() - failed to send SCSI packet to " + m_DevicePath);
return CDS_TRAY_OPEN;
}
if (es->media_present)
{
LOG(VB_MEDIA, LOG_DEBUG, LOC +
":SCSIstatus() - ioctl said tray was open, "
"but drive is actually closed with a disc");
return CDS_DISC_OK;
}
else if (es->door_open)
{
LOG(VB_MEDIA, LOG_DEBUG, LOC +
":SCSIstatus() - tray is definitely open");
return CDS_TRAY_OPEN;
}
LOG(VB_MEDIA, LOG_DEBUG, LOC + ":SCSIstatus() - ioctl said tray was open, "
"but drive is actually closed with no disc");
return CDS_NO_DISC;
}
MythMediaError MythCDROMLinux::eject(bool open_close)
{
if (!isDeviceOpen())
{
if (!openDevice())
return MEDIAERR_FAILED;
}
if (open_close)
return (ioctl(m_DeviceHandle, CDROMEJECT) == 0) ? MEDIAERR_OK
: MEDIAERR_FAILED;
else
{
// If the tray is empty, this will fail (Input/Output error)
ioctl(m_DeviceHandle, CDROMCLOSETRAY);
// This allows us to catch any drives that the OS has problems
// detecting the status of (some always report OPEN when empty)
if (driveStatus() == CDS_TRAY_OPEN)
return MEDIAERR_FAILED;
else
return MEDIAERR_OK;
}
}
bool MythCDROMLinux::mediaChanged()
{
return (ioctl(m_DeviceHandle, CDROM_MEDIA_CHANGED, CDSL_CURRENT) > 0);
}
bool MythCDROMLinux::checkOK()
{
return (ioctl(m_DeviceHandle, CDROM_DRIVE_STATUS, CDSL_CURRENT) ==
CDS_DISC_OK);
}
// Helper function, perform a sanity check on the device
MythMediaError MythCDROMLinux::testMedia()
{
bool OpenedHere = false;
if (!isDeviceOpen())
{
if (!openDevice())
{
LOG(VB_MEDIA, LOG_DEBUG, LOC + ":testMedia - failed to open '" +
m_DevicePath + "' : " +ENO);
if (errno == EBUSY)
return isMounted() ? MEDIAERR_OK : MEDIAERR_FAILED;
else
return MEDIAERR_FAILED;
}
LOG(VB_MEDIA, LOG_DEBUG, LOC + ":testMedia - Opened device");
OpenedHere = true;
}
// Since the device was is/was open we can get it's status...
int Stat = driveStatus();
// Be nice and close the device if we opened it,
// otherwise it might be locked when the user doesn't want it to be.
if (OpenedHere)
closeDevice();
if (Stat == -1)
{
LOG(VB_MEDIA, LOG_DEBUG, LOC +
":testMedia - Failed to get drive status of '" + m_DevicePath +
"' : " + ENO);
return MEDIAERR_FAILED;
}
return MEDIAERR_OK;
}
MythMediaStatus MythCDROMLinux::checkMedia()
{
bool OpenedHere = false;
// If it's not already open we need to at least
// TRY to open it for most of these checks to work.
if (!isDeviceOpen())
{
OpenedHere = openDevice();
if (!OpenedHere)
{
LOG(VB_MEDIA, LOG_ERR, LOC +
":checkMedia() - cannot open device '" + m_DevicePath + "' : " +
ENO + "- returning UNKNOWN");
m_MediaType = MEDIATYPE_UNKNOWN;
return setStatus(MEDIASTAT_UNKNOWN, false);
}
}
switch (driveStatus())
{
case CDS_DISC_OK:
LOG(VB_MEDIA, LOG_DEBUG, m_DevicePath + " Disk OK, type = " +
MediaTypeString(m_MediaType) );
// further checking is required
break;
case CDS_TRAY_OPEN:
LOG(VB_MEDIA, LOG_DEBUG, m_DevicePath + " Tray open or no disc");
// First, send a message to the
// plugins to forget the current media type
setStatus(MEDIASTAT_OPEN, OpenedHere);
// then "clear out" this device
m_MediaType = MEDIATYPE_UNKNOWN;
return MEDIASTAT_OPEN;
break;
case CDS_NO_DISC:
LOG(VB_MEDIA, LOG_DEBUG, m_DevicePath + " No disc");
m_MediaType = MEDIATYPE_UNKNOWN;
return setStatus(MEDIASTAT_NODISK, OpenedHere);
break;
case CDS_NO_INFO:
case CDS_DRIVE_NOT_READY:
LOG(VB_MEDIA, LOG_DEBUG, m_DevicePath +
" No info or drive not ready");
m_MediaType = MEDIATYPE_UNKNOWN;
return setStatus(MEDIASTAT_UNKNOWN, OpenedHere);
default:
LOG(VB_GENERAL, LOG_ERR, "Failed to get drive status of " +
m_DevicePath + " : " + ENO);
m_MediaType = MEDIATYPE_UNKNOWN;
return setStatus(MEDIASTAT_UNKNOWN, OpenedHere);
}
if (mediaChanged())
{
LOG(VB_MEDIA, LOG_INFO, m_DevicePath + " Media changed");
// Regardless of the actual status lie here and say
// it's open for now, so we can cover the case of a missed open.
return setStatus(MEDIASTAT_OPEN, OpenedHere);
}
if (isUsable())
{
LOG(VB_MEDIA, LOG_DEBUG, "Disc useable, media unchanged. All good!");
if (OpenedHere)
closeDevice();
return MEDIASTAT_USEABLE;
}
// If we have tried to mount and failed, don't keep trying
if (m_Status == MEDIASTAT_ERROR)
{
// Check if an external agent (like Gnome/KDE) mounted the disk
if (isMounted())
{
onDeviceMounted();
// pretend we're NOTMOUNTED so setStatus emits a signal
m_Status = MEDIASTAT_NOTMOUNTED;
return setStatus(MEDIASTAT_MOUNTED, OpenedHere);
}
LOG(VB_MEDIA, LOG_DEBUG, "Disc is unmountable?");
if (OpenedHere)
closeDevice();
return m_Status;
}
if ((m_Status == MEDIASTAT_OPEN) ||
(m_Status == MEDIASTAT_UNKNOWN))
{
LOG(VB_MEDIA, LOG_INFO, m_DevicePath + " Current status " +
MythMediaDevice::MediaStatusStrings[m_Status]);
int type = ioctl(m_DeviceHandle, CDROM_DISC_STATUS, CDSL_CURRENT);
switch (type)
{
case CDS_DATA_1:
case CDS_DATA_2:
{
m_MediaType = MEDIATYPE_DATA;
LOG(VB_MEDIA, LOG_INFO, "Found a data disk");
//grab information from iso9660 (& udf)
off_t sr = lseek(m_DeviceHandle,
(off_t) 2048*16, SEEK_SET);
struct iso_primary_descriptor buf;
ssize_t readin = 0;
while ((sr != (off_t) -1) && (readin < 2048))
{
ssize_t rr = read(
m_DeviceHandle, ((char*)&buf) + readin, 2048 - readin);
if ((rr < 0) && ((EAGAIN == errno) || (EINTR == errno)))
continue;
else if (rr < 0)
break;
readin += rr;
}
if (readin == 2048)
{
m_VolumeID = QString(buf.volume_id).trimmed();
m_KeyID = QString("%1%2")
.arg(m_VolumeID)
.arg(QString(buf.creation_date).left(16));
}
else
{
m_VolumeID = "UNKNOWN";
m_KeyID = m_VolumeID + MythDate::current_iso_string();
}
LOG(VB_MEDIA, LOG_INFO,
QString("Volume ID: %1").arg(m_VolumeID));
#ifdef USING_LIBUDF
// Check for a DVD/BD disk by reading the UDF root dir.
// This allows DVD's to play immediately upon insertion without
// calling mount, which either needs pmount or changes to fstab.
udf_t *pUdf = udf_open(m_DevicePath.toAscii());
if (NULL != pUdf)
{
udf_dirent_t *pUdfRoot = udf_get_root(pUdf, true, 0);
if (NULL != pUdfRoot)
{
if (NULL != udf_fopen(pUdfRoot, "VIDEO_TS"))
m_MediaType = MEDIATYPE_DVD;
else if (NULL != udf_fopen(pUdfRoot, "BDMV"))
m_MediaType = MEDIATYPE_BD;
udf_dirent_free(pUdfRoot);
}
udf_close(pUdf);
if (MEDIATYPE_DATA != m_MediaType)
{
// pretend we're NOTMOUNTED so setStatus emits a signal
m_Status = MEDIASTAT_NOTMOUNTED;
return setStatus(MEDIASTAT_USEABLE, OpenedHere);
}
}
#endif
// the base class's onDeviceMounted will do fine
// grained detection of the type of data on this disc
if (isMounted())
onDeviceMounted();
else if (!mount()) // onDeviceMounted() called as side-effect
return setStatus(MEDIASTAT_ERROR, OpenedHere);
if (isMounted())
{
// pretend we're NOTMOUNTED so setStatus emits a signal
m_Status = MEDIASTAT_NOTMOUNTED;
return setStatus(MEDIASTAT_MOUNTED, OpenedHere);
}
else if (m_MediaType == MEDIATYPE_DVD)
{
// pretend we're NOTMOUNTED so setStatus emits a signal
m_Status = MEDIASTAT_NOTMOUNTED;
return setStatus(MEDIASTAT_USEABLE, OpenedHere);
}
else
return setStatus(MEDIASTAT_NOTMOUNTED, OpenedHere);
break;
}
case CDS_AUDIO:
LOG(VB_MEDIA, LOG_DEBUG, "found an audio disk");
// pretend we're NOTMOUNTED so setStatus emits a signal
m_Status = MEDIASTAT_NOTMOUNTED;
m_MediaType = MEDIATYPE_AUDIO;
return setStatus(MEDIASTAT_USEABLE, OpenedHere);
break;
case CDS_MIXED:
LOG(VB_MEDIA, LOG_DEBUG, "found a mixed CD");
// Note: Mixed mode CDs require an explixit mount call
// since we'll usually want the audio portion.
// undefine ASSUME_WANT_AUDIO to change this behavior.
#if ASSUME_WANT_AUDIO
// pretend we're NOTMOUNTED so setStatus emits a signal
m_Status = MEDIASTAT_NOTMOUNTED;
m_MediaType = MEDIATYPE_AUDIO;
return setStatus(MEDIASTAT_USEABLE, OpenedHere);
#else
m_MediaType = MEDIATYPE_MIXED;
mount();
if (isMounted())
{
// pretend we're NOTMOUNTED so setStatus
// emits a signal
m_Status = MEDIASTAT_NOTMOUNTED;
return setStatus(MEDIASTAT_MOUNTED, OpenedHere);
}
else
{
return setStatus(MEDIASTAT_USEABLE, OpenedHere);
}
#endif
break;
case CDS_NO_INFO:
case CDS_NO_DISC:
if (hasWritableMedia())
{
LOG(VB_MEDIA, LOG_DEBUG, "found a blank or writable disk");
return setStatus(MEDIASTAT_UNFORMATTED, OpenedHere);
}
LOG(VB_MEDIA, LOG_DEBUG, "found no disk");
m_MediaType = MEDIATYPE_UNKNOWN;
return setStatus(MEDIASTAT_UNKNOWN, OpenedHere);
break;
default:
LOG(VB_MEDIA, LOG_DEBUG, "found unknown disk type: " +
QString::number(type));
m_MediaType = MEDIATYPE_UNKNOWN;
return setStatus(MEDIASTAT_UNKNOWN, OpenedHere);
}
}
if (m_AllowEject)
unlock();
else
lock();
if (OpenedHere)
closeDevice();
LOG(VB_MEDIA, LOG_DEBUG, QString("Returning %1")
.arg(MythMediaDevice::MediaStatusStrings[m_Status]));
return m_Status;
}
MythMediaError MythCDROMLinux::lock()
{
MythMediaError ret = MythMediaDevice::lock();
if (ret == MEDIAERR_OK)
ioctl(m_DeviceHandle, CDROM_LOCKDOOR, 1);
return ret;
}
MythMediaError MythCDROMLinux::unlock()
{
if (isDeviceOpen() || openDevice())
{
LOG(VB_MEDIA, LOG_DEBUG, LOC + ":unlock - Unlocking CDROM door");
ioctl(m_DeviceHandle, CDROM_LOCKDOOR, 0);
}
else
{
LOG(VB_GENERAL, LOG_INFO, "Failed to open device, CDROM try will "
"remain locked.");
}
return MythMediaDevice::unlock();
}
bool MythCDROMLinux::isSameDevice(const QString &path)
{
dev_t new_rdev;
struct stat sb;
if (stat(path.toLocal8Bit().constData(), &sb) < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC + ":isSameDevice() -- " +
QString("Failed to stat '%1'").arg(path) + ENO);
return false;
}
new_rdev = sb.st_rdev;
// Check against m_DevicePath...
if (stat(m_DevicePath.toLocal8Bit().constData(), &sb) < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC + ":isSameDevice() -- " +
QString("Failed to stat '%1'").arg(m_DevicePath) + ENO);
return false;
}
return (sb.st_rdev == new_rdev);
}
#if defined(SG_IO) && defined(GPCMD_SET_STREAMING)
/*
* \brief obtained from the mplayer project
*/
void MythCDROMLinux::setSpeed(int speed)
{
MythCDROMLinux::setSpeed(m_DevicePath.toLocal8Bit().constData(), speed);
}
void MythCDROMLinux::setSpeed(const char *device, int speed)
{
int fd;
unsigned char buffer[28];
unsigned char cmd[16];
unsigned char sense[16];
struct sg_io_hdr sghdr;
struct stat st;
int rate = 0;
memset(&sghdr, 0, sizeof(sghdr));
memset(buffer, 0, sizeof(buffer));
memset(sense, 0, sizeof(sense));
memset(cmd, 0, sizeof(cmd));
memset(&st, 0, sizeof(st));
if ((fd = open(device, O_RDWR | O_NONBLOCK)) == -1)
{
LOG(VB_MEDIA, LOG_ERR, LOC +
" Changing CD/DVD speed needs write access");
return;
}
if (fstat(fd, &st) == -1)
{
close(fd);
LOG(VB_MEDIA, LOG_ERR, LOC +
QString(":setSpeed() Failed. device %1 not found") .arg(device));
return;
}
if (!S_ISBLK(st.st_mode))
{
close(fd);
LOG(VB_MEDIA, LOG_ERR, LOC + ":setSpeed() Failed. Not a block device");
return;
}
if (speed < 0)
speed = -1;
switch(speed)
{
case 0: // don't touch speed setting
close(fd);
return;
case -1: // restore default value
{
rate = 0;
buffer[0] = 4;
LOG(VB_MEDIA, LOG_INFO, LOC +
":setSpeed() - Restored CD/DVD Speed");
break;
}
default:
{
// Speed in Kilobyte/Second. 177KB/s is the maximum data rate
// for standard Audio CD's.
rate = (speed > 0 && speed < 100) ? speed * 177 : speed;
LOG(VB_MEDIA, LOG_INFO, LOC +
QString(":setSpeed() - Limiting CD/DVD Speed to %1KB/s")
.arg(rate));
break;
}
}
sghdr.interface_id = 'S';
sghdr.timeout = 5000;
sghdr.dxfer_direction = SG_DXFER_TO_DEV;
sghdr.mx_sb_len = sizeof(sense);
sghdr.dxfer_len = sizeof(buffer);
sghdr.cmd_len = sizeof(cmd);
sghdr.sbp = sense;
sghdr.dxferp = buffer;
sghdr.cmdp = cmd;
cmd[0] = GPCMD_SET_STREAMING;
cmd[10] = sizeof(buffer);
buffer[8] = 0xff;
buffer[9] = 0xff;
buffer[10] = 0xff;
buffer[11] = 0xff;
buffer[12] = buffer[20] = (rate >> 24) & 0xff;
buffer[13] = buffer[21] = (rate >> 16) & 0xff;
buffer[14] = buffer[22] = (rate >> 8) & 0xff;
buffer[15] = buffer[23] = rate & 0xff;
// Note: 0x3e8 == 1000, hence speed = data amount per 1000 milliseconds.
buffer[18] = buffer[26] = 0x03;
buffer[19] = buffer[27] = 0xe8;
if (ioctl(fd, SG_IO, &sghdr) < 0)
{
LOG(VB_MEDIA, LOG_ERR, LOC + " Limit CD/DVD Speed Failed");
}
else
{
// On my system (2.6.18+ide-cd), SG_IO succeeds without doing anything,
// while CDROM_SELECT_SPEED works...
if (ioctl(fd, CDROM_SELECT_SPEED, speed) < 0)
{
LOG(VB_MEDIA, LOG_ERR, LOC +
" Limit CD/DVD CDROM_SELECT_SPEED Failed");
}
LOG(VB_MEDIA, LOG_INFO, LOC +
":setSpeed() - CD/DVD Speed Set Successful");
}
close(fd);
}
#endif