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systemd-stable/rules.d/60-serial.rules
Yu Watanabe c61e4377d7 udev: add safe guard for setting by-id symlink
The ID_BUS property is necessary for creating by-id symlinks.

(cherry picked from commit 5286da064c)
(cherry picked from commit 46a301accd)
2022-11-08 00:09:18 +01:00

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# do not edit this file, it will be overwritten on update
ACTION=="remove", GOTO="serial_end"
SUBSYSTEM!="tty", GOTO="serial_end"
SUBSYSTEMS=="usb", IMPORT{builtin}="usb_id", IMPORT{builtin}="hwdb --subsystem=usb"
SUBSYSTEMS=="pci", ENV{ID_BUS}=="", ENV{ID_BUS}="pci", \
ENV{ID_VENDOR_ID}="$attr{vendor}", ENV{ID_MODEL_ID}="$attr{device}", \
IMPORT{builtin}="hwdb --subsystem=pci"
# /dev/serial/by-path/, /dev/serial/by-id/ for USB devices
KERNEL!="ttyUSB[0-9]*|ttyACM[0-9]*", GOTO="serial_end"
SUBSYSTEMS=="usb-serial", ENV{.ID_PORT}="$attr{port_number}"
IMPORT{builtin}="path_id"
ENV{ID_PATH}=="?*", ENV{.ID_PORT}=="", SYMLINK+="serial/by-path/$env{ID_PATH}"
ENV{ID_PATH}=="?*", ENV{.ID_PORT}=="?*", SYMLINK+="serial/by-path/$env{ID_PATH}-port$env{.ID_PORT}"
ENV{ID_BUS}=="", GOTO="serial_end"
ENV{ID_SERIAL}=="", GOTO="serial_end"
ENV{ID_USB_INTERFACE_NUM}=="", GOTO="serial_end"
ENV{.ID_PORT}=="", SYMLINK+="serial/by-id/$env{ID_BUS}-$env{ID_SERIAL}-if$env{ID_USB_INTERFACE_NUM}"
ENV{.ID_PORT}=="?*", SYMLINK+="serial/by-id/$env{ID_BUS}-$env{ID_SERIAL}-if$env{ID_USB_INTERFACE_NUM}-port$env{.ID_PORT}"
LABEL="serial_end"