(Feb-07-2024, 01:32 PM)Gribouillis Wrote: [ -> ] (Feb-07-2024, 03:34 AM)Daring_T Wrote: [ -> ]I am not seeing a way to see the disc's type.
I had some success on my linux computer with the command
Output:
udevadm info -q property /dev/cdrom
When a DVD is inserted, the output contains a line
Output:
ID_CDROM_MEDIA_DVD=1
When a CD is inserted, or an audio CD, there is a line
Output:
ID_CDROM_MEDIA_CD=1
When there is nothing in the CD drive, there is no ID_CDROM_MEDIA... line in the output. I don't have a blue ray disk to see what it does.
EDIT: after some tests, I was able to get the information with pyudev
import pyudev
def main():
context = pyudev.Context()
a = context.list_devices(sys_name="sr0")
dev = next(iter(a))
# print(dev)
# print(dict(dev.properties))
if dev.properties.get("ID_CDROM_MEDIA_CD", False):
print("CD drive contains a CD")
elif dev.properties.get("ID_CDROM_MEDIA_DVD", False):
print("CD drive contains a DVD")
if __name__ == "__main__":
main()Output:
λ python paillasse/pf/cdrom.py
CD drive contains a DVD
It seems that for blue ray, the property is ID_CDROM_MEDIA_BD
Thanks Gribouillis for the code snippet, worked like a charm. I just need to figure out blue-ray's. Unfortunately dict(dev.properties) does not show or add an different var for blue-rays from what I can see. I need to do some more digging with udev rules and dd but I have ran out of time today. I will post if I find a solution for blue-rays.
Thanks both for your help,
Daring_T
Also here is what a blue-ray looks like with running dict(dev.properties):
Output:
{'CURRENT_TAGS': ':uaccess:systemd:seat:',
'DEVLINKS': '/dev/disk/by-path/pci-0000:00:14.0-usb-0:4.4:1.0-scsi-0:0:0:0 '
'/dev/disk/by-id/usb-ASUS_BW-16D1HT_20201230-0:0 '
'/dev/disk/by-uuid/8cd94d0851963909 '
'/dev/disk/by-label/INCREDIBLES_D2',
'DEVNAME': '/dev/sr1',
'DEVPATH': '/devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4.4/3-4.4:1.0/host5/target5:0:0/5:0:0:0/block/sr1',
'DEVTYPE': 'disk',
'DISKSEQ': '82',
'ID_BUS': 'usb',
'ID_CDROM': '1',
'ID_CDROM_BD': '1',
'ID_CDROM_BD_R': '1',
'ID_CDROM_BD_RE': '1',
'ID_CDROM_BD_R_RRM': '1',
'ID_CDROM_BD_R_SRM': '1',
'ID_CDROM_CD': '1',
'ID_CDROM_CD_R': '1',
'ID_CDROM_CD_RW': '1',
'ID_CDROM_DVD': '1',
'ID_CDROM_DVD_PLUS_R': '1',
'ID_CDROM_DVD_PLUS_RW': '1',
'ID_CDROM_DVD_PLUS_R_DL': '1',
'ID_CDROM_DVD_R': '1',
'ID_CDROM_DVD_RAM': '1',
'ID_CDROM_DVD_RW': '1',
'ID_CDROM_DVD_RW_RO': '1',
'ID_CDROM_DVD_RW_SEQ': '1',
'ID_CDROM_DVD_R_DL': '1',
'ID_CDROM_DVD_R_DL_JR': '1',
'ID_CDROM_DVD_R_DL_SEQ': '1',
'ID_CDROM_MEDIA': '1',
'ID_CDROM_MEDIA_BD': '1',
'ID_CDROM_MEDIA_SESSION_COUNT': '1',
'ID_CDROM_MEDIA_STATE': 'complete',
'ID_CDROM_MEDIA_TRACK_COUNT': '1',
'ID_CDROM_MEDIA_TRACK_COUNT_DATA': '1',
'ID_CDROM_MRW': '1',
'ID_CDROM_MRW_W': '1',
'ID_CDROM_RW_REMOVABLE': '1',
'ID_FOR_SEAT': 'block-pci-0000_00_14_0-usb-0_4_4_1_0-scsi-0_0_0_0',
'ID_FS_APPLICATION_ID': 'APPLICATION_ID',
'ID_FS_LABEL': 'INCREDIBLES_D2',
'ID_FS_LABEL_ENC': 'INCREDIBLES_D2',
'ID_FS_LOGICAL_VOLUME_ID': 'INCREDIBLES_D2',
'ID_FS_TYPE': 'udf',
'ID_FS_USAGE': 'filesystem',
'ID_FS_UUID': '8cd94d0851963909',
'ID_FS_UUID_ENC': '8cd94d0851963909',
'ID_FS_VERSION': '2.50',
'ID_FS_VOLUME_ID': 'INCREDIBLES_D2',
'ID_FS_VOLUME_SET_ID': '8CD94D0851963909_VOLUME_SET_ID',
'ID_INSTANCE': '0:0',
'ID_MODEL': 'BW-16D1HT',
'ID_MODEL_ENC': 'BW-16D1HT\\x20\\x20\\x20\\x20\\x20\\x20\\x20',
'ID_MODEL_ID': '0611',
'ID_PATH': 'pci-0000:00:14.0-usb-0:4.4:1.0-scsi-0:0:0:0',
'ID_PATH_TAG': 'pci-0000_00_14_0-usb-0_4_4_1_0-scsi-0_0_0_0',
'ID_REVISION': '3.00',
'ID_SERIAL': 'ASUS_BW-16D1HT_20201230-0:0',
'ID_SERIAL_SHORT': '01234567',
'ID_TYPE': 'cd',
'ID_USB_DRIVER': 'usb-storage',
'ID_USB_INTERFACES': ':080650:',
'ID_USB_INTERFACE_NUM': '00',
'ID_VENDOR': 'ASUS',
'ID_VENDOR_ENC': 'ASUS\\x20\\x20\\x20\\x20',
'ID_VENDOR_ID': '1f75',
'MAJOR': '11',
'MINOR': '1',
'SUBSYSTEM': 'block',
'SYSTEMD_MOUNT_DEVICE_BOUND': '1',
'TAGS': ':uaccess:systemd:seat:',
'USEC_INITIALIZED': '1989315471'}