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udev: tag DMI id device with "systemd", so that we can order units after it

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For various usecases it is useful to read relevant data from the DMI
udev device, but this means we need a way to wait for it for this to be
probed to be race-free. Hence tag it with "systemd", so that
sys-devices-virtual-dmi-id.device can be used as synchronization point.
This commit is contained in:
Lennart Poettering
2026-03-20 11:53:33 +01:00
parent 6738762688
commit 56356c9dec
1 changed files with 8 additions and 4 deletions
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rules.d/60-dmi-id.rules
+8 -4
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@@ -2,24 +2,28 @@
ACTION=="remove", GOTO="dmi_end"
SUBSYSTEM!="dmi", GOTO="dmi_end"
KERNEL!="id", GOTO="dmi_end"
ENV{ID_SYS_VENDOR_IS_RUBBISH}!="1", ENV{ID_VENDOR}="$attr{sys_vendor}"
ENV{ID_SYSFS_ATTRIBUTE_MODEL}=="", ENV{ID_PRODUCT_NAME_IS_RUBBISH}!="1", ENV{ID_MODEL}="$attr{product_name}"
ENV{ID_SYSFS_ATTRIBUTE_MODEL}=="product_name", ENV{ID_MODEL}="$attr{product_name}"
ENV{ID_SYSFS_ATTRIBUTE_MODEL}=="product_version", ENV{ID_MODEL}="$attr{product_version}"
# fallback to board information
# Fallback to board information
ENV{ID_VENDOR}=="", ENV{ID_VENDOR}="$attr{board_vendor}"
ENV{ID_MODEL}=="", ENV{ID_MODEL}="$attr{board_name}"
# stock keeping unit
# Stock keeping unit
ENV{ID_PRODUCT_SKU_IS_RUBBISH}!="1", ENV{ID_SKU}="$attr{product_sku}"
# hardware version
# Hardware version
ENV{ID_PRODUCT_VERSION_IS_RUBBISH}!="1", ENV{ID_HARDWARE_VERSION}="$attr{product_version}"
ENV{ID_HARDWARE_VERSION}=="", ENV{ID_BOARD_VERSION_IS_RUBBISH}!="1", ENV{ID_HARDWARE_VERSION}="$attr{board_version}"
# chassis asset tag
# Chassis asset tag
ENV{MODALIAS}!="", ATTR{chassis_asset_tag}!="", IMPORT{builtin}="hwdb '$attr{modalias}cat$attr{chassis_asset_tag}:'"
ENV{ID_CHASSIS_ASSET_TAG_IS_RUBBISH}!="1", ENV{ID_CHASSIS_ASSET_TAG}="$attr{chassis_asset_tag}"
# Allow units to be ordered after the DMI device
TAG+="systemd"
LABEL="dmi_end"