URL: https://linuxfr.org/forums/linux-general/posts/regle-udev-non-prise-en-compte-sur-une-machine-alma-linux-9 Title: règle udev non prise en compte sur une machine alma linux 9 Authors: Olivier LEMAIRE Date: 2023年01月13日T16:08:15+01:00 License: CC By-SA Tags: almalinux, udev, linux, usb et dongle Score: 1 Bonjour à tous, je travaille pour une expérience avec un gros système électronique. Dans ce système, on utilise ~~à outrance~~ des dongles usb vers : - du can; - du spi; - du rs232; - de l'i2c. Pour reconnaitre ces dongles dans le logiciel que j'écris, j'ai fait des règles udev me permettant d'avoir des liens symboliques plus explicites que simplement tty(USB|ACM)xx. Ces règles udev ont été testées avec succès sur différentes machines et différents OS (fedora, debian, ubuntu...). J'étais donc assez confiant. Cependant, nos machines de prod vont utiliser alma linux 9 car le cern à recemment choisit cette distribution. Mon problème c'est que mes regles udev ne semblent plus fonctionner sur les machines utilisant alma linux 9... Mon fichier 99-x2.rules ``` shell # usb->i2c SUBSYSTEM=="tty" , ATTRS{idVendor}=="04d8" , ATTRS{serial}=="00051241" , SYMLINK+="ttyshaper0" SUBSYSTEM=="tty" , ATTRS{idVendor}=="04d8" , ATTRS{serial}=="00001229" , SYMLINK+="ttyshaper1" SUBSYSTEM=="tty" , ATTRS{idvendor}=="04d8" , ATTRS{serial}=="00051229" , SYMLINK+="ttyshaper2" ``` ci-dessous les info sur le device ```shell udevadm info -a -p $(udevadm info -q path -n /dev/ttyACM0) 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/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.0/tty/ttyACM0': KERNEL=="ttyACM0" SUBSYSTEM=="tty" 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/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.0': KERNELS=="1-12:1.0" SUBSYSTEMS=="usb" DRIVERS=="cdc_acm" ATTRS{authorized}=="1" ATTRS{bAlternateSetting}==" 0" ATTRS{bInterfaceClass}=="02" ATTRS{bInterfaceNumber}=="00" ATTRS{bInterfaceProtocol}=="01" ATTRS{bInterfaceSubClass}=="02" ATTRS{bNumEndpoints}=="01" ATTRS{bmCapabilities}=="2" ATTRS{supports_autosuspend}=="1" looking at parent device '/devices/pci0000:00/0000:00:14.0/usb1/1-12': KERNELS=="1-12" SUBSYSTEMS=="usb" DRIVERS=="usb" ATTRS{authorized}=="1" ATTRS{avoid_reset_quirk}=="0" ATTRS{bConfigurationValue}=="1" ATTRS{bDeviceClass}=="02" ATTRS{bDeviceProtocol}=="00" ATTRS{bDeviceSubClass}=="00" ATTRS{bMaxPacketSize0}=="8" ATTRS{bMaxPower}=="100mA" ATTRS{bNumConfigurations}=="1" ATTRS{bNumInterfaces}==" 2" ATTRS{bcdDevice}=="0100" ATTRS{bmAttributes}=="c0" ATTRS{busnum}=="1" ATTRS{configuration}=="" ATTRS{devnum}=="11" ATTRS{devpath}=="12" ATTRS{idProduct}=="ffee" ATTRS{idVendor}=="04d8" ATTRS{ltm_capable}=="no" ATTRS{manufacturer}=="Devantech Ltd." ATTRS{maxchild}=="0" ATTRS{power/active_duration}=="1015273" ATTRS{power/autosuspend}=="2" ATTRS{power/autosuspend_delay_ms}=="2000" ATTRS{power/connected_duration}=="1015273" ATTRS{power/control}=="on" ATTRS{power/level}=="on" ATTRS{power/persist}=="1" ATTRS{power/runtime_active_time}=="1015031" ATTRS{power/runtime_status}=="active" ATTRS{power/runtime_suspended_time}=="0" ATTRS{product}=="USB-ISS." ATTRS{quirks}=="0x0" ATTRS{removable}=="removable" ATTRS{remove}=="(write-only)" ATTRS{rx_lanes}=="1" ATTRS{serial}=="00051229" ATTRS{speed}=="12" ATTRS{tx_lanes}=="1" ATTRS{urbnum}=="13" ATTRS{version}==" 2.00" looking at parent device '/devices/pci0000:00/0000:00:14.0/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}=="0514" 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 5.14.0-162.6.1.el9_1.x86_64 xhci-hcd" ATTRS{maxchild}=="16" ATTRS{power/active_duration}=="4050276" ATTRS{power/autosuspend}=="0" ATTRS{power/autosuspend_delay_ms}=="0" ATTRS{power/connected_duration}=="4050276" ATTRS{power/control}=="auto" ATTRS{power/level}=="auto" ATTRS{power/runtime_active_time}=="4050274" 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}=="(write-only)" ATTRS{rx_lanes}=="1" ATTRS{serial}=="0000:00:14.0" ATTRS{speed}=="480" ATTRS{tx_lanes}=="1" ATTRS{urbnum}=="222" ATTRS{version}==" 2.00" looking at parent device '/devices/pci0000:00/0000:00:14.0': KERNELS=="0000:00:14.0" SUBSYSTEMS=="pci" DRIVERS=="xhci_hcd" ATTRS{ari_enabled}=="0" ATTRS{broken_parity_status}=="0" ATTRS{class}=="0x0c0330" ATTRS{consistent_dma_mask_bits}=="64" ATTRS{d3cold_allowed}=="1" ATTRS{dbc}=="disabled" ATTRS{device}=="0x43ed" ATTRS{dma_mask_bits}=="64" ATTRS{driver_override}=="(null)" ATTRS{enable}=="1" ATTRS{irq}=="126" ATTRS{local_cpulist}=="0-11" ATTRS{local_cpus}=="fff" ATTRS{msi_bus}=="1" ATTRS{msi_irqs/126}=="msi" ATTRS{numa_node}=="-1" ATTRS{power/control}=="on" ATTRS{power/runtime_active_time}=="4050438" 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}=="(write-only)" ATTRS{rescan}=="(write-only)" ATTRS{revision}=="0x11" ATTRS{subsystem_device}=="0x0a56" ATTRS{subsystem_vendor}=="0x1028" ATTRS{vendor}=="0x8086" 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" ``` et finalement un test sur le device ```shell # udevadm test --action="add" "/devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.0/tty/ttyACM0" This program is for debugging only, it does not run any program specified by a RUN key. It may show incorrect results, because some values may be different, or not available at a simulation run. Trying to open "/etc/systemd/hwdb/hwdb.bin"... Trying to open "/etc/udev/hwdb.bin"... === trie on-disk === tool version: 250 file size: 11996232 bytes header size 80 bytes strings 2442720 bytes nodes 9553432 bytes Load module index Found cgroup2 on /sys/fs/cgroup/, full unified hierarchy Found container virtualization none. Loaded timestamp for '/run/systemd/network'. Parsed configuration file /usr/lib/systemd/network/99-default.link Created link configuration context. Loaded timestamp for '/etc/udev/rules.d'. Reading rules file: /usr/lib/udev/rules.d/01-md-raid-creating.rules Reading rules file: /usr/lib/udev/rules.d/10-dm.rules Reading rules file: /usr/lib/udev/rules.d/11-dm-lvm.rules Reading rules file: /usr/lib/udev/rules.d/11-dm-mpath.rules Reading rules file: /usr/lib/udev/rules.d/11-dm-parts.rules Reading rules file: /usr/lib/udev/rules.d/13-dm-disk.rules Reading rules file: /usr/lib/udev/rules.d/40-elevator.rules Reading rules file: /usr/lib/udev/rules.d/40-libgphoto2.rules Reading rules file: /usr/lib/udev/rules.d/40-redhat.rules Reading rules file: /usr/lib/udev/rules.d/40-usb-blacklist.rules Reading rules file: /usr/lib/udev/rules.d/40-usb_modeswitch.rules Reading rules file: /usr/lib/udev/rules.d/50-udev-default.rules Reading rules file: /usr/lib/udev/rules.d/60-autosuspend.rules Reading rules file: /usr/lib/udev/rules.d/60-block.rules Reading rules file: /usr/lib/udev/rules.d/60-cdrom_id.rules Reading rules file: /usr/lib/udev/rules.d/60-drm.rules Reading rules file: /usr/lib/udev/rules.d/60-evdev.rules Reading rules file: /usr/lib/udev/rules.d/60-fido-id.rules Reading rules file: /usr/lib/udev/rules.d/60-input-id.rules Reading rules file: /usr/lib/udev/rules.d/60-net.rules Reading rules file: /usr/lib/udev/rules.d/60-persistent-alsa.rules Reading rules file: /usr/lib/udev/rules.d/60-persistent-input.rules Reading rules file: /usr/lib/udev/rules.d/60-persistent-storage-tape.rules Reading rules file: /usr/lib/udev/rules.d/60-persistent-storage.rules Reading rules file: /usr/lib/udev/rules.d/60-persistent-v4l.rules Reading rules file: /usr/lib/udev/rules.d/60-sensor.rules Reading rules file: /usr/lib/udev/rules.d/60-serial.rules Reading rules file: /usr/lib/udev/rules.d/60-tpm-udev.rules Reading rules file: /usr/lib/udev/rules.d/60_flashrom.rules Reading rules file: /usr/lib/udev/rules.d/61-gdm.rules Reading rules file: /usr/lib/udev/rules.d/61-gnome-bluetooth-rfkill.rules Reading rules file: /usr/lib/udev/rules.d/61-gnome-settings-daemon-rfkill.rules Reading rules file: /usr/lib/udev/rules.d/61-mutter.rules Reading rules file: /usr/lib/udev/rules.d/61-scsi-sg3_id.rules Reading rules file: /usr/lib/udev/rules.d/62-multipath.rules Reading rules file: /usr/lib/udev/rules.d/63-fc-wwpn-id.rules Reading rules file: /usr/lib/udev/rules.d/63-md-raid-arrays.rules Reading rules file: /usr/lib/udev/rules.d/63-scsi-sg3_symlink.rules Reading rules file: /usr/lib/udev/rules.d/64-btrfs.rules Reading rules file: /usr/lib/udev/rules.d/64-md-raid-assembly.rules Reading rules file: /usr/lib/udev/rules.d/65-libwacom.rules Reading rules file: /usr/lib/udev/rules.d/65-md-incremental.rules Reading rules file: /usr/lib/udev/rules.d/65-sane-backends.rules Reading rules file: /usr/lib/udev/rules.d/65-scsi-cciss_id.rules Reading rules file: /usr/lib/udev/rules.d/66-kpartx.rules Reading rules file: /usr/lib/udev/rules.d/68-del-part-nodes.rules Reading rules file: /usr/lib/udev/rules.d/69-cd-sensors.rules Reading rules file: /usr/lib/udev/rules.d/69-dm-lvm.rules Reading rules file: /usr/lib/udev/rules.d/69-libmtp.rules Reading rules file: /usr/lib/udev/rules.d/69-md-clustered-confirm-device.rules Reading rules file: /usr/lib/udev/rules.d/70-camera.rules Reading rules file: /usr/lib/udev/rules.d/70-hypervfcopy.rules Reading rules file: /usr/lib/udev/rules.d/70-hypervkvp.rules Reading rules file: /usr/lib/udev/rules.d/70-hypervvss.rules Reading rules file: /usr/lib/udev/rules.d/70-joystick.rules Reading rules file: /usr/lib/udev/rules.d/70-libfprint-2.rules Reading rules file: /usr/lib/udev/rules.d/70-memory.rules Reading rules file: /usr/lib/udev/rules.d/70-mouse.rules Reading rules file: /usr/lib/udev/rules.d/70-nvmf-autoconnect.rules Reading rules file: /usr/lib/udev/rules.d/70-power-switch.rules Reading rules file: /usr/lib/udev/rules.d/70-printers.rules Reading rules file: /usr/lib/udev/rules.d/70-spice-vdagentd.rules Reading rules file: /usr/lib/udev/rules.d/70-touchpad.rules Reading rules file: /usr/lib/udev/rules.d/70-uaccess.rules Reading rules file: /usr/lib/udev/rules.d/70-wacom.rules Reading rules file: /usr/lib/udev/rules.d/71-nvmf-iopolicy-netapp.rules Reading rules file: /usr/lib/udev/rules.d/71-prefixdevname.rules Reading rules file: /usr/lib/udev/rules.d/71-seat.rules Reading rules file: /usr/lib/udev/rules.d/73-seat-late.rules Reading rules file: /usr/lib/udev/rules.d/75-net-description.rules Reading rules file: /usr/lib/udev/rules.d/75-probe_mtd.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-broadmobi-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-cinterion-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-dell-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-dlink-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-ericsson-mbm.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-fibocom-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-foxconn-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-gosuncn-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-haier-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-huawei-net-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-longcheer-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-mtk-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-nokia-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-quectel-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-sierra.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-simtech-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-telit-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-tplink-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-ublox-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-x22x-port-types.rules Reading rules file: /usr/lib/udev/rules.d/77-mm-zte-port-types.rules Reading rules file: /usr/lib/udev/rules.d/78-sound-card.rules Reading rules file: /usr/lib/udev/rules.d/80-drivers.rules Reading rules file: /usr/lib/udev/rules.d/80-iio-sensor-proxy.rules Reading rules file: /usr/lib/udev/rules.d/80-libinput-device-groups.rules Reading rules file: /usr/lib/udev/rules.d/80-mm-candidate.rules Reading rules file: /usr/lib/udev/rules.d/80-net-setup-link.rules Reading rules file: /usr/lib/udev/rules.d/80-udisks2.rules Reading rules file: /usr/lib/udev/rules.d/81-net-dhcp.rules Reading rules file: /usr/lib/udev/rules.d/84-nm-drivers.rules Reading rules file: /usr/lib/udev/rules.d/85-nm-unmanaged.rules Reading rules file: /usr/lib/udev/rules.d/85-regulatory.rules Reading rules file: /usr/lib/udev/rules.d/90-alsa-restore.rules Reading rules file: /usr/lib/udev/rules.d/90-bolt.rules Reading rules file: /usr/lib/udev/rules.d/90-fwupd-devices.rules Reading rules file: /usr/lib/udev/rules.d/90-iprutils.rules Reading rules file: /usr/lib/udev/rules.d/90-libinput-fuzz-override.rules Reading rules file: /usr/lib/udev/rules.d/90-nm-thunderbolt.rules Reading rules file: /usr/lib/udev/rules.d/90-pipewire-alsa.rules Reading rules file: /usr/lib/udev/rules.d/90-vconsole.rules Reading rules file: /usr/lib/udev/rules.d/91-drm-modeset.rules Reading rules file: /usr/lib/udev/rules.d/95-cd-devices.rules Reading rules file: /usr/lib/udev/rules.d/95-dm-notify.rules Reading rules file: /usr/lib/udev/rules.d/95-upower-hid.rules Reading rules file: /usr/lib/udev/rules.d/95-upower-wup.rules Reading rules file: /usr/lib/udev/rules.d/98-kexec.rules Reading rules file: /usr/lib/udev/rules.d/99-qemu-guest-agent.rules Reading rules file: /usr/lib/udev/rules.d/99-systemd.rules Reading rules file: /usr/lib/udev/rules.d/99-vmware-scsi-udev.rules Reading rules file: /etc/udev/rules.d/99-x2-daq-visu.rules ttyACM0: /usr/lib/udev/rules.d/50-udev-default.rules:26 GROUP 18 ttyACM0: /usr/lib/udev/rules.d/60-serial.rules:7 Importing properties from results of builtin command 'hwdb --subsystem=pci' ttyACM0: hwdb modalias key: "pci:v00008086d000043EDsv00001028sd00000A56bc0Csc03i30" ttyACM0: /usr/lib/udev/rules.d/60-serial.rules:8 Importing properties from results of builtin command 'usb_id' 1-12:1.0: if_class:2 protocol:0 ttyACM0: /usr/lib/udev/rules.d/60-serial.rules:8 Importing properties from results of builtin command 'hwdb --subsystem=usb' ttyACM0: hwdb modalias key: "usb:v04D8pFFEEd0100dc02dsc00dp00ic02isc02ip01in00" ttyACM0: /usr/lib/udev/rules.d/60-serial.rules:15 Importing properties from results of builtin command 'path_id' ttyACM0: /usr/lib/udev/rules.d/60-serial.rules:16 LINK 'serial/by-path/pci-.&checktime(0000,00,14,':').0-usb-0:12:1.0' ttyACM0: /usr/lib/udev/rules.d/60-serial.rules:19 Skipping builtin 'usb_id' in IMPORT key ttyACM0: /usr/lib/udev/rules.d/60-serial.rules:23 LINK 'serial/by-id/usb-Devantech_Ltd._USB-ISS._00051229-if00' ttyACM0: Preserve permissions of /dev/ttyACM0, uid=0, gid=18, mode=0660 ttyACM0: Handling device node '/dev/ttyACM0', devnum=c166:0 ttyACM0: sd-device: Created db file '/run/udev/data/c166:0' for '/devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.0/tty/ttyACM0' DEVPATH=/devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.0/tty/ttyACM0 DEVNAME=/dev/ttyACM0 MAJOR=166 MINOR=0 ACTION=add SUBSYSTEM=tty TAGS=:systemd: ID_BUS=usb ID_VENDOR_ID=04d8 ID_MODEL_ID=ffee ID_PCI_CLASS_FROM_DATABASE=Serial bus controller ID_PCI_SUBCLASS_FROM_DATABASE=USB controller ID_PCI_INTERFACE_FROM_DATABASE=XHCI ID_VENDOR_FROM_DATABASE=Microchip Technology, Inc. ID_MODEL_FROM_DATABASE=Devantech USB-ISS ID_VENDOR=Devantech_Ltd. ID_VENDOR_ENC=Devantech\x20Ltd. ID_MODEL=USB-ISS. ID_MODEL_ENC=USB-ISS. ID_REVISION=0100 ID_SERIAL=Devantech_Ltd._USB-ISS._00051229 ID_SERIAL_SHORT=00051229 ID_TYPE=generic ID_USB_INTERFACES=:020201:0a0000: ID_USB_INTERFACE_NUM=00 ID_USB_DRIVER=cdc_acm ID_USB_CLASS_FROM_DATABASE=Communications ID_PATH=pci-.&checktime(0000,00,14,':').0-usb-0:12:1.0 ID_PATH_TAG=pci-0000_00_14_0-usb-0_12_1_0 DEVLINKS=/dev/serial/by-path/pci-.&checktime(0000,00,14,':').0-usb-0:12:1.0 /dev/serial/by-id/usb-Devantech_Ltd._USB-ISS._00051229-if00 ID_MM_CANDIDATE=1 CURRENT_TAGS=:systemd: USEC_INITIALIZED=3036159759 Unload module index Unloaded link configuration context. ``` Je ne comprends pas pourquoi ça ne fonctionne pas sur alma alors que ça marche partout ailleurs. Merci d'avance pour votre aide. Olivier

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