Hi, have a problem with an udev rule and it’s permission.
In the Arch wiki about the udev rules in chapter 4.2 I read that the entry mode 0660 is preferred for USER permissions. Attached is an excerpt from the wiki:
The modern recommended approach for systemd systems is to use a MODE of 660 to let the group use the device, and then attach a TAG named uaccess [3]. This special tag makes udev apply a dynamic user ACL to the device node, which coordinates with systemd-logind(8) to make the device usable to logged-in users.
In my udev rule I added MODE=“0660”, TAG+=“uaccess” accordingly.
When I run the command stat /dev/hidraw0 the output tells me that the device only has permission.
Zugriff: (0600/crw-------) Uid: ( 0/ root) Gid: ( 0/ root)
Are there any other settings necessary to make this work correctly?
Can I check if my udev rule is loaded or working correctly?
udevadm info --attribute-walk --path=$(udevadm info --query=path --name=/dev/hidraw0)
Also … whats the filename, and in comparison to the others?
ls /etc/udev/rules.d/
Mostly I’m just wondering if its loaded last.
I cannot understand the output of
udevadm info --attribute-walk --path=$(udevadm info --query=path --name=/dev/hidraw0)
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/pci0000:00/0000:00:01.2/0000:02:00.0/usb1/1-1/1-1:1.0/0003:046D:C539.0001/hidraw/hidraw0':
KERNEL=="hidraw0"
SUBSYSTEM=="hidraw"
DRIVER==""
ATTR{power/control}=="auto"
ATTR{power/runtime_active_time}=="0"
ATTR{power/runtime_status}=="unsupported"
ATTR{power/runtime_suspended_time}=="0"
looking at parent device '/devices/pci0000:00/0000:00:01.2/0000:02:00.0/usb1/1-1/1-1:1.0/0003:046D:C539.0001':
KERNELS=="0003:046D:C539.0001"
SUBSYSTEMS=="hid"
DRIVERS=="logitech-djreceiver"
ATTRS{country}=="00"
ATTRS{power/control}=="auto"
ATTRS{power/runtime_active_time}=="0"
ATTRS{power/runtime_status}=="unsupported"
ATTRS{power/runtime_suspended_time}=="0"
looking at parent device '/devices/pci0000:00/0000:00:01.2/0000:02:00.0/usb1/1-1/1-1:1.0':
KERNELS=="1-1:1.0"
SUBSYSTEMS=="usb"
DRIVERS=="usbhid"
ATTRS{authorized}=="1"
ATTRS{bAlternateSetting}==" 0"
ATTRS{bInterfaceClass}=="03"
ATTRS{bInterfaceNumber}=="00"
ATTRS{bInterfaceProtocol}=="01"
ATTRS{bInterfaceSubClass}=="01"
ATTRS{bNumEndpoints}=="01"
ATTRS{physical_location/dock}=="no"
ATTRS{physical_location/horizontal_position}=="left"
ATTRS{physical_location/lid}=="no"
ATTRS{physical_location/panel}=="top"
ATTRS{physical_location/vertical_position}=="upper"
ATTRS{supports_autosuspend}=="1"
looking at parent device '/devices/pci0000:00/0000:00:01.2/0000:02:00.0/usb1/1-1':
KERNELS=="1-1"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{authorized}=="1"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{bConfigurationValue}=="1"
ATTRS{bDeviceClass}=="00"
ATTRS{bDeviceProtocol}=="00"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bMaxPacketSize0}=="32"
ATTRS{bMaxPower}=="98mA"
ATTRS{bNumConfigurations}=="1"
ATTRS{bNumInterfaces}==" 3"
ATTRS{bcdDevice}=="3904"
ATTRS{bmAttributes}=="a0"
ATTRS{busnum}=="1"
ATTRS{configuration}=="RQR39.04_B0036"
ATTRS{devnum}=="2"
ATTRS{devpath}=="1"
ATTRS{idProduct}=="c539"
ATTRS{idVendor}=="046d"
ATTRS{ltm_capable}=="no"
ATTRS{manufacturer}=="Logitech"
ATTRS{maxchild}=="0"
ATTRS{physical_location/dock}=="no"
ATTRS{physical_location/horizontal_position}=="left"
ATTRS{physical_location/lid}=="no"
ATTRS{physical_location/panel}=="top"
ATTRS{physical_location/vertical_position}=="upper"
ATTRS{power/active_duration}=="754824"
ATTRS{power/autosuspend}=="2"
ATTRS{power/autosuspend_delay_ms}=="2000"
ATTRS{power/connected_duration}=="754824"
ATTRS{power/control}=="on"
ATTRS{power/level}=="on"
ATTRS{power/persist}=="1"
ATTRS{power/runtime_active_time}=="754421"
ATTRS{power/runtime_status}=="active"
ATTRS{power/runtime_suspended_time}=="0"
ATTRS{power/wakeup}=="enabled"
ATTRS{power/wakeup_abort_count}=="0"
ATTRS{power/wakeup_active}=="0"
ATTRS{power/wakeup_active_count}=="0"
ATTRS{power/wakeup_count}=="0"
ATTRS{power/wakeup_expire_count}=="0"
ATTRS{power/wakeup_last_time_ms}=="0"
ATTRS{power/wakeup_max_time_ms}=="0"
ATTRS{power/wakeup_total_time_ms}=="0"
ATTRS{product}=="USB Receiver"
ATTRS{quirks}=="0x0"
ATTRS{removable}=="removable"
ATTRS{remove}=="(not readable)"
ATTRS{rx_lanes}=="1"
ATTRS{speed}=="12"
ATTRS{tx_lanes}=="1"
ATTRS{urbnum}=="49854"
ATTRS{version}==" 2.00"
looking at parent device '/devices/pci0000:00/0000:00:01.2/0000:02:00.0/usb1':
KERNELS=="usb1"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{authorized}=="1"
ATTRS{authorized_default}=="1"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{bConfigurationValue}=="1"
ATTRS{bDeviceClass}=="09"
ATTRS{bDeviceProtocol}=="01"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bMaxPacketSize0}=="64"
ATTRS{bMaxPower}=="0mA"
ATTRS{bNumConfigurations}=="1"
ATTRS{bNumInterfaces}==" 1"
ATTRS{bcdDevice}=="0601"
ATTRS{bmAttributes}=="e0"
ATTRS{busnum}=="1"
ATTRS{configuration}==""
ATTRS{devnum}=="1"
ATTRS{devpath}=="0"
ATTRS{idProduct}=="0002"
ATTRS{idVendor}=="1d6b"
ATTRS{interface_authorized_default}=="1"
ATTRS{ltm_capable}=="no"
ATTRS{manufacturer}=="Linux 6.1.26-1-MANJARO xhci-hcd"
ATTRS{maxchild}=="10"
ATTRS{power/active_duration}=="755010"
ATTRS{power/autosuspend}=="0"
ATTRS{power/autosuspend_delay_ms}=="0"
ATTRS{power/connected_duration}=="755010"
ATTRS{power/control}=="auto"
ATTRS{power/level}=="auto"
ATTRS{power/runtime_active_time}=="754954"
ATTRS{power/runtime_status}=="active"
ATTRS{power/runtime_suspended_time}=="0"
ATTRS{power/wakeup}=="disabled"
ATTRS{power/wakeup_abort_count}==""
ATTRS{power/wakeup_active}==""
ATTRS{power/wakeup_active_count}==""
ATTRS{power/wakeup_count}==""
ATTRS{power/wakeup_expire_count}==""
ATTRS{power/wakeup_last_time_ms}==""
ATTRS{power/wakeup_max_time_ms}==""
ATTRS{power/wakeup_total_time_ms}==""
ATTRS{product}=="xHCI Host Controller"
ATTRS{quirks}=="0x0"
ATTRS{removable}=="unknown"
ATTRS{remove}=="(not readable)"
ATTRS{rx_lanes}=="1"
ATTRS{serial}=="0000:02:00.0"
ATTRS{speed}=="480"
ATTRS{tx_lanes}=="1"
ATTRS{urbnum}=="61"
ATTRS{version}==" 2.00"
looking at parent device '/devices/pci0000:00/0000:00:01.2/0000:02:00.0':
KERNELS=="0000:02:00.0"
SUBSYSTEMS=="pci"
DRIVERS=="xhci_hcd"
ATTRS{ari_enabled}=="0"
ATTRS{broken_parity_status}=="0"
ATTRS{class}=="0x0c0330"
ATTRS{consistent_dma_mask_bits}=="64"
ATTRS{current_link_speed}=="8.0 GT/s PCIe"
ATTRS{current_link_width}=="4"
ATTRS{d3cold_allowed}=="1"
ATTRS{device}=="0x43ee"
ATTRS{dma_mask_bits}=="64"
ATTRS{driver_override}=="(null)"
ATTRS{enable}=="1"
ATTRS{irq}=="34"
ATTRS{link/l1_aspm}=="0"
ATTRS{local_cpulist}=="0-11"
ATTRS{local_cpus}=="00000fff"
ATTRS{max_link_speed}=="8.0 GT/s PCIe"
ATTRS{max_link_width}=="4"
ATTRS{msi_bus}=="1"
ATTRS{msi_irqs/76}=="msix"
ATTRS{msi_irqs/77}=="msix"
ATTRS{msi_irqs/78}=="msix"
ATTRS{msi_irqs/79}=="msix"
ATTRS{msi_irqs/80}=="msix"
ATTRS{msi_irqs/81}=="msix"
ATTRS{msi_irqs/82}=="msix"
ATTRS{msi_irqs/83}=="msix"
ATTRS{numa_node}=="-1"
ATTRS{power/control}=="on"
ATTRS{power/runtime_active_time}=="757359"
ATTRS{power/runtime_status}=="active"
ATTRS{power/runtime_suspended_time}=="0"
ATTRS{power/wakeup}=="enabled"
ATTRS{power/wakeup_abort_count}=="0"
ATTRS{power/wakeup_active}=="0"
ATTRS{power/wakeup_active_count}=="0"
ATTRS{power/wakeup_count}=="0"
ATTRS{power/wakeup_expire_count}=="0"
ATTRS{power/wakeup_last_time_ms}=="0"
ATTRS{power/wakeup_max_time_ms}=="0"
ATTRS{power/wakeup_total_time_ms}=="0"
ATTRS{power_state}=="D0"
ATTRS{remove}=="(not readable)"
ATTRS{rescan}=="(not readable)"
ATTRS{reset}=="(not readable)"
ATTRS{reset_method}=="bus"
ATTRS{resource0}=="(not readable)"
ATTRS{revision}=="0x00"
ATTRS{subsystem_device}=="0x1142"
ATTRS{subsystem_vendor}=="0x1b21"
ATTRS{vendor}=="0x1022"
looking at parent device '/devices/pci0000:00/0000:00:01.2':
KERNELS=="0000:00:01.2"
SUBSYSTEMS=="pci"
DRIVERS=="pcieport"
ATTRS{aer_rootport_total_err_cor}=="0"
ATTRS{aer_rootport_total_err_fatal}=="0"
ATTRS{aer_rootport_total_err_nonfatal}=="0"
ATTRS{ari_enabled}=="0"
ATTRS{broken_parity_status}=="0"
ATTRS{class}=="0x060400"
ATTRS{consistent_dma_mask_bits}=="32"
ATTRS{current_link_speed}=="8.0 GT/s PCIe"
ATTRS{current_link_width}=="4"
ATTRS{d3cold_allowed}=="1"
ATTRS{device}=="0x1483"
ATTRS{dma_mask_bits}=="32"
ATTRS{driver_override}=="(null)"
ATTRS{enable}=="2"
ATTRS{irq}=="27"
ATTRS{local_cpulist}=="0-11"
ATTRS{local_cpus}=="00000fff"
ATTRS{max_link_speed}=="16.0 GT/s PCIe"
ATTRS{max_link_width}=="8"
ATTRS{msi_bus}=="1"
ATTRS{msi_irqs/27}=="msi"
ATTRS{numa_node}=="-1"
ATTRS{power/autosuspend_delay_ms}=="100"
ATTRS{power/control}=="on"
ATTRS{power/runtime_active_time}=="757360"
ATTRS{power/runtime_status}=="active"
ATTRS{power/runtime_suspended_time}=="0"
ATTRS{power/wakeup}=="disabled"
ATTRS{power/wakeup_abort_count}==""
ATTRS{power/wakeup_active}==""
ATTRS{power/wakeup_active_count}==""
ATTRS{power/wakeup_count}==""
ATTRS{power/wakeup_expire_count}==""
ATTRS{power/wakeup_last_time_ms}==""
ATTRS{power/wakeup_max_time_ms}==""
ATTRS{power/wakeup_total_time_ms}==""
ATTRS{power_state}=="D0"
ATTRS{remove}=="(not readable)"
ATTRS{rescan}=="(not readable)"
ATTRS{reset}=="(not readable)"
ATTRS{reset_method}=="pm"
ATTRS{revision}=="0x00"
ATTRS{secondary_bus_number}=="2"
ATTRS{subordinate_bus_number}=="7"
ATTRS{subsystem_device}=="0x8808"
ATTRS{subsystem_vendor}=="0x1043"
ATTRS{vendor}=="0x1022"
looking at parent device '/devices/pci0000:00':
KERNELS=="pci0000:00"
SUBSYSTEMS==""
DRIVERS==""
ATTRS{power/control}=="auto"
ATTRS{power/runtime_active_time}=="0"
ATTRS{power/runtime_status}=="unsupported"
ATTRS{power/runtime_suspended_time}=="0"
ATTRS{waiting_for_supplier}=="0"
File names and rights in comparison I do not find notable:
ls -l /etc/udev/rules.d/
-rw-r--r-- 1 root root 3170 13. Mai 07:14 41-nitrokey.rules
-rw-r--r-- 1 root root 63312 8. Aug 2022 70-snap.snapd.rules
-rw-r--r-- 1 root root 10040 21. Jan 16:20 utsushi-esci.rules