Hi,
I'm using Gentoo, udev 146 and the Gentoo Hardened 2.6.28 kernel.
I have a few virtually identical external USB Seagate harddrives that
I am trying to write some udev rules for, however I've run into a
problem. When I run 'udevadm info --name=/dev/sdc1
--attribute-walk', I am not able to find any unique, static attribute.
The ATTRS{serial}=="0000:02:07.2" seems to be some USB access path,
and any others seem to be rather generic or generated upon plugging
the drive in.
With the lsusb tool, I am able to find each drives specific, static
serial number (ex. iSerial SG054313839), however these do not show up in the
udevadm attribute walk. Is there any way to "access" this attribute via udev
so that I can write rules specifically for each drive?
I have attached the output of both udevadm (sdc1.txt), lsusb (usb.txt)
and the output of 'ls /dev/disk/by-* -lh' (dev.txt).
Thanks in advance,
-Ryan
# ls /dev/disk/by-* -lh > dev.txt
/dev/disk/by-id:
total 0
lrwxrwxrwx 1 root root 9 Dec 5 10:11 ata-Maxtor_4G160J8_G803V4EE -> ../../hdc
lrwxrwxrwx 1 root root 10 Dec 5 10:11 ata-Maxtor_4G160J8_G803V4EE-part1 -> ../../hdc1
lrwxrwxrwx 1 root root 10 Dec 5 10:11 ata-Maxtor_4G160J8_G803V4EE-part2 -> ../../hdc2
lrwxrwxrwx 1 root root 10 Dec 5 10:11 ata-Maxtor_4G160J8_G803V4EE-part3 -> ../../hdc3
lrwxrwxrwx 1 root root 10 Dec 5 10:11 ata-Maxtor_4G160J8_G803V4EE-part4 -> ../../hdc4
lrwxrwxrwx 1 root root 9 Dec 5 10:11 ata-Maxtor_4G160J8_G803VNCE -> ../../hda
lrwxrwxrwx 1 root root 10 Dec 5 10:11 ata-Maxtor_4G160J8_G803VNCE-part1 -> ../../hda1
lrwxrwxrwx 1 root root 10 Dec 5 10:11 ata-Maxtor_4G160J8_G803VNCE-part2 -> ../../hda2
lrwxrwxrwx 1 root root 10 Dec 5 10:11 ata-Maxtor_4G160J8_G803VNCE-part3 -> ../../hda3
lrwxrwxrwx 1 root root 10 Dec 5 10:11 ata-Maxtor_4G160J8_G803VNCE-part4 -> ../../hda4
lrwxrwxrwx 1 root root 19 Dec 5 10:11 dm-name-backup -> ../../mapper/backup
lrwxrwxrwx 1 root root 17 Dec 5 10:11 dm-name-home -> ../../mapper/home
lrwxrwxrwx 1 root root 17 Dec 5 10:11 dm-name-root -> ../../mapper/root
lrwxrwxrwx 1 root root 17 Dec 5 10:11 dm-name-swap -> ../../mapper/swap
lrwxrwxrwx 1 root root 9 Dec 5 10:11 md-uuid-01912720:90688835:271c31d7:147203ca -> ../../md4
lrwxrwxrwx 1 root root 9 Dec 5 10:11 md-uuid-643de684:ea3f43bf:c41ede71:61a59fba -> ../../md1
lrwxrwxrwx 1 root root 9 Dec 5 10:11 md-uuid-8f0eddc4:69f5f983:89fbc6cb:58f28dae -> ../../md5
lrwxrwxrwx 1 root root 9 Dec 5 10:11 md-uuid-dda14e96:12e50ad2:25bf5f45:304b292e -> ../../md2
lrwxrwxrwx 1 root root 9 Dec 5 10:11 md-uuid-f2314f4e:7a98519b:efbcc342:a25f3c7b -> ../../md3
lrwxrwxrwx 1 root root 9 Feb 26 10:02 usb-Seagate_External_Drive-0:0 -> ../../sdc
lrwxrwxrwx 1 root root 10 Feb 26 10:02 usb-Seagate_External_Drive-0:0-part1 -> ../../sdc1
/dev/disk/by-label:
total 0
lrwxrwxrwx 1 root root 10 Feb 26 10:02 SEA_DISK -> ../../sdc1
/dev/disk/by-path:
total 0
lrwxrwxrwx 1 root root 9 Dec 5 10:11 pci-0000:00:07.1 -> ../../hda
lrwxrwxrwx 1 root root 10 Dec 5 10:11 pci-0000:00:07.1-part1 -> ../../hda1
lrwxrwxrwx 1 root root 10 Dec 5 10:11 pci-0000:00:07.1-part2 -> ../../hda2
lrwxrwxrwx 1 root root 10 Dec 5 10:11 pci-0000:00:07.1-part3 -> ../../hda3
lrwxrwxrwx 1 root root 10 Dec 5 10:11 pci-0000:00:07.1-part4 -> ../../hdc4
lrwxrwxrwx 1 root root 9 Feb 26 10:02 pci-0000:02:05.2-usb-0:1:1.0-scsi-0:0:0:0 -> ../../sdc
lrwxrwxrwx 1 root root 10 Feb 26 10:02 pci-0000:02:05.2-usb-0:1:1.0-scsi-0:0:0:0-part1 -> ../../sdc1
lrwxrwxrwx 1 root root 9 Dec 5 10:11 pci-0000:02:05.2-usb-0:3:1.0-scsi-0:0:0:0 -> ../../sda
lrwxrwxrwx 1 root root 10 Dec 5 10:11 pci-0000:02:05.2-usb-0:3:1.0-scsi-0:0:0:0-part1 -> ../../sda1
lrwxrwxrwx 1 root root 9 Dec 5 10:11 pci-0000:02:05.2-usb-0:4:1.0-scsi-0:0:0:0 -> ../../sdb
lrwxrwxrwx 1 root root 10 Dec 5 10:11 pci-0000:02:05.2-usb-0:4:1.0-scsi-0:0:0:0-part1 -> ../../sdb1
/dev/disk/by-uuid:
total 0
lrwxrwxrwx 1 root root 9 Dec 5 10:11 14291bb8-db83-4ee4-99dd-afa06ff4a9ff -> ../../md5
lrwxrwxrwx 1 root root 19 Dec 5 10:11 142ce108-84c6-4f85-a341-7128c9ebdea9 -> ../../mapper/backup
lrwxrwxrwx 1 root root 17 Dec 5 10:11 2ee91586-fdd8-4733-88aa-48536c4c4e1c -> ../../mapper/home
lrwxrwxrwx 1 root root 9 Dec 5 10:11 343112cf-cd90-46ec-9b7d-aed9101f8382 -> ../../md1
lrwxrwxrwx 1 root root 9 Dec 5 10:11 7834ded0-1732-402b-bcb9-01cb28d2a4dd -> ../../md2
lrwxrwxrwx 1 root root 17 Dec 5 10:11 7838f75a-fbc6-4a30-9c2b-5d48ef95e3ed -> ../../mapper/swap
lrwxrwxrwx 1 root root 9 Dec 5 10:11 ca0af6ad-b8bc-4ff3-8270-9c1b20135053 -> ../../md3
lrwxrwxrwx 1 root root 9 Dec 5 10:11 db534481-18f1-4a9d-924f-1622d4d07dcc -> ../../md4
lrwxrwxrwx 1 root root 17 Dec 5 10:11 e61f6136-1a70-45d2-820a-c8633b728d63 -> ../../mapper/root
# udevadm info --name=/dev/sdc1 --attribute-walk > sdc1.txt
Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.
looking at device '/devices/pci0000:00/0000:00:10.0/0000:02:05.2/usb1/1-1/1-1:1.0/host9/target9:0:0/9:0:0:0/block/sdc/sdc1':
KERNEL=="sdc1"
SUBSYSTEM=="block"
DRIVER==""
ATTR{partition}=="1"
ATTR{start}=="63"
ATTR{size}=="234436482"
ATTR{stat}==" 14 179 410 140 0 0 0 0 0 130 140"
looking at parent device '/devices/pci0000:00/0000:00:10.0/0000:02:05.2/usb1/1-1/1-1:1.0/host9/target9:0:0/9:0:0:0/block/sdc':
KERNELS=="sdc"
SUBSYSTEMS=="block"
DRIVERS==""
ATTRS{range}=="16"
ATTRS{ext_range}=="256"
ATTRS{removable}=="0"
ATTRS{ro}=="0"
ATTRS{size}=="234441648"
ATTRS{capability}=="52"
ATTRS{stat}==" 23 208 714 220 0 0 0 0 0 200 220"
looking at parent device '/devices/pci0000:00/0000:00:10.0/0000:02:05.2/usb1/1-1/1-1:1.0/host9/target9:0:0/9:0:0:0':
KERNELS=="9:0:0:0"
SUBSYSTEMS=="scsi"
DRIVERS=="sd"
ATTRS{device_blocked}=="0"
ATTRS{type}=="0"
ATTRS{scsi_level}=="0"
ATTRS{vendor}=="Seagate "
ATTRS{model}=="External Drive "
ATTRS{rev}==" "
ATTRS{state}=="running"
ATTRS{timeout}=="30"
ATTRS{iocounterbits}=="32"
ATTRS{iorequest_cnt}=="0x25"
ATTRS{iodone_cnt}=="0x25"
ATTRS{ioerr_cnt}=="0x0"
ATTRS{modalias}=="scsi:t-0x00"
ATTRS{evt_media_change}=="0"
ATTRS{queue_depth}=="1"
ATTRS{queue_type}=="none"
ATTRS{max_sectors}=="240"
looking at parent device '/devices/pci0000:00/0000:00:10.0/0000:02:05.2/usb1/1-1/1-1:1.0/host9/target9:0:0':
KERNELS=="target9:0:0"
SUBSYSTEMS=="scsi"
DRIVERS==""
looking at parent device '/devices/pci0000:00/0000:00:10.0/0000:02:05.2/usb1/1-1/1-1:1.0/host9':
KERNELS=="host9"
SUBSYSTEMS=="scsi"
DRIVERS==""
looking at parent device '/devices/pci0000:00/0000:00:10.0/0000:02:05.2/usb1/1-1/1-1:1.0':
KERNELS=="1-1:1.0"
SUBSYSTEMS=="usb"
DRIVERS=="usb-storage"
ATTRS{bInterfaceNumber}=="00"
ATTRS{bAlternateSetting}==" 0"
ATTRS{bNumEndpoints}=="03"
ATTRS{bInterfaceClass}=="08"
ATTRS{bInterfaceSubClass}=="06"
ATTRS{bInterfaceProtocol}=="50"
ATTRS{modalias}=="usb:v0BC2p0503d0240dc00dsc00dp00ic08isc06ip50"
ATTRS{supports_autosuspend}=="0"
looking at parent device '/devices/pci0000:00/0000:00:10.0/0000:02:05.2/usb1/1-1':
KERNELS=="1-1"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{configuration}==""
ATTRS{bNumInterfaces}==" 1"
ATTRS{bConfigurationValue}=="1"
ATTRS{bmAttributes}=="c0"
ATTRS{bMaxPower}==" 0mA"
ATTRS{urbnum}=="228"
ATTRS{idVendor}=="0bc2"
ATTRS{idProduct}=="0503"
ATTRS{bcdDevice}=="0240"
ATTRS{bDeviceClass}=="00"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bDeviceProtocol}=="00"
ATTRS{bNumConfigurations}=="1"
ATTRS{bMaxPacketSize0}=="64"
ATTRS{speed}=="480"
ATTRS{busnum}=="1"
ATTRS{devnum}=="11"
ATTRS{version}==" 2.00"
ATTRS{maxchild}=="0"
ATTRS{quirks}=="0x0"
ATTRS{authorized}=="1"
looking at parent device '/devices/pci0000:00/0000:00:10.0/0000:02:05.2/usb1':
KERNELS=="usb1"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{configuration}==""
ATTRS{bNumInterfaces}==" 1"
ATTRS{bConfigurationValue}=="1"
ATTRS{bmAttributes}=="e0"
ATTRS{bMaxPower}==" 0mA"
ATTRS{urbnum}=="336"
ATTRS{idVendor}=="1d6b"
ATTRS{idProduct}=="0002"
ATTRS{bcdDevice}=="0206"
ATTRS{bDeviceClass}=="09"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bDeviceProtocol}=="00"
ATTRS{bNumConfigurations}=="1"
ATTRS{bMaxPacketSize0}=="64"
ATTRS{speed}=="480"
ATTRS{busnum}=="1"
ATTRS{devnum}=="1"
ATTRS{version}==" 2.00"
ATTRS{maxchild}=="4"
ATTRS{quirks}=="0x0"
ATTRS{authorized}=="1"
ATTRS{manufacturer}=="Linux 2.6.28-hardened-r9 ehci_hcd"
ATTRS{product}=="EHCI Host Controller"
ATTRS{serial}=="0000:02:05.2"
ATTRS{authorized_default}=="1"
looking at parent device '/devices/pci0000:00/0000:00:10.0/0000:02:05.2':
KERNELS=="0000:02:05.2"
SUBSYSTEMS=="pci"
DRIVERS=="ehci_hcd"
ATTRS{vendor}=="0x1106"
ATTRS{device}=="0x3104"
ATTRS{subsystem_vendor}=="0x1106"
ATTRS{subsystem_device}=="0x3104"
ATTRS{class}=="0x0c0320"
ATTRS{irq}=="19"
ATTRS{local_cpus}=="f"
ATTRS{local_cpulist}=="0-3"
ATTRS{modalias}=="pci:v00001106d00003104sv00001106sd00003104bc0Csc03i20"
ATTRS{enable}=="1"
ATTRS{broken_parity_status}=="0"
ATTRS{msi_bus}==""
looking at parent device '/devices/pci0000:00/0000:00:10.0':
KERNELS=="0000:00:10.0"
SUBSYSTEMS=="pci"
DRIVERS==""
ATTRS{vendor}=="0x1022"
ATTRS{device}=="0x7448"
ATTRS{subsystem_vendor}=="0x0000"
ATTRS{subsystem_device}=="0x0000"
ATTRS{class}=="0x060400"
ATTRS{irq}=="0"
ATTRS{local_cpus}=="f"
ATTRS{local_cpulist}=="0-3"
ATTRS{modalias}=="pci:v00001022d00007448sv00000000sd00000000bc06sc04i00"
ATTRS{enable}=="1"
ATTRS{broken_parity_status}=="0"
ATTRS{msi_bus}=="1"
looking at parent device '/devices/pci0000:00':
KERNELS=="pci0000:00"
SUBSYSTEMS==""
DRIVERS==""
# lsusb -v > usb.txt
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0001 1.1 root hub
bcdDevice 2.06
iManufacturer 3 Linux 2.6.28-hardened-r9 uhci_hcd
iProduct 2 UHCI Host Controller
iSerial 1 0000:02:05.1
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0002 1x 2 bytes
bInterval 255
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 2
wHubCharacteristic 0x000a
No power switching (usb 1.0)
Per-port overcurrent protection
bPwrOn2PwrGood 1 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0100 power
Device Status: 0x0003
Self Powered
Remote Wakeup Enabled
Bus 001 Device 011: ID 0bc2:0503 Seagate RSS LLC
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x0bc2 Seagate RSS LLC
idProduct 0x0503
bcdDevice 2.40
iManufacturer 42 Jabil Circuit
iProduct 57 Seagate External Drive
iSerial 83 SG054312408
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 39
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk (Zip)
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x86 EP 6 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 10
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0001
Self Powered
Bus 001 Device 003: ID 0bc2:0503 Seagate RSS LLC
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x0bc2 Seagate RSS LLC
idProduct 0x0503
bcdDevice 2.40
iManufacturer 42 Jabil Circuit
iProduct 57 Seagate External Drive
iSerial 83 SG054305177
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 39
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk (Zip)
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x86 EP 6 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 10
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0001
Self Powered
Bus 001 Device 002: ID 0bc2:0503 Seagate RSS LLC
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x0bc2 Seagate RSS LLC
idProduct 0x0503
bcdDevice 2.40
iManufacturer 42 Jabil Circuit
iProduct 57 Seagate External Drive
iSerial 83 SG054313839
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 39
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk (Zip)
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x86 EP 6 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 10
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0001
Self Powered
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0002 2.0 root hub
bcdDevice 2.06
iManufacturer 3 Linux 2.6.28-hardened-r9 ehci_hcd
iProduct 2 EHCI Host Controller
iSerial 1 0000:02:05.2
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 12
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 4
wHubCharacteristic 0x000a
No power switching (usb 1.0)
Per-port overcurrent protection
bPwrOn2PwrGood 10 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0503 highspeed power enable connect
Port 2: 0000.0100 power
Port 3: 0000.0503 highspeed power enable connect
Port 4: 0000.0503 highspeed power enable connect
Device Status: 0x0003
Self Powered
Remote Wakeup Enabled
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0001 1.1 root hub
bcdDevice 2.06
iManufacturer 3 Linux 2.6.28-hardened-r9 uhci_hcd
iProduct 2 UHCI Host Controller
iSerial 1 0000:02:05.0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0002 1x 2 bytes
bInterval 255
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 2
wHubCharacteristic 0x000a
No power switching (usb 1.0)
Per-port overcurrent protection
bPwrOn2PwrGood 1 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0300 lowspeed power
Device Status: 0x0003
Self Powered
Remote Wakeup Enabled
