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udev: set clock group for PTP and RTC devices

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Add a new group for clock devices to enable applications like linuxptp
to open clocks without root privileges.
This commit is contained in:
Miroslav Lichvar
2025-01-16 15:34:47 +01:00
committed by Zbigniew Jędrzejewski-Szmek
parent 0ec19b311b
commit af96ccfc24
5 changed files with 8 additions and 1 deletions
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2
rules.d/50-udev-default.rules.in
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@@ -10,6 +10,7 @@ SUBSYSTEM=="block", KERNEL=="md*", ENV{ID_IGNORE_DISKSEQ}="1"
SUBSYSTEM=="virtio-ports", KERNEL=="vport*", ATTR{name}=="?*", SYMLINK+="virtio-ports/$attr{name}"
SUBSYSTEM=="rtc", GROUP="clock", MODE="0660"
# select "system RTC" or just use the first one
SUBSYSTEM=="rtc", ATTR{hctosys}=="1", SYMLINK+="rtc"
SUBSYSTEM=="rtc", KERNEL=="rtc0", SYMLINK+="rtc", OPTIONS+="link_priority=-100"
@@ -30,6 +31,7 @@ SUBSYSTEM=="pci|usb|platform", IMPORT{builtin}="path_id"
SUBSYSTEM=="net", IMPORT{builtin}="net_driver"
SUBSYSTEM=="ptp", GROUP="clock", MODE="0660"
SUBSYSTEM=="ptp", ATTR{clock_name}=="KVM virtual PTP", SYMLINK+="ptp_kvm"
SUBSYSTEM=="ptp", ATTR{clock_name}=="hyperv", SYMLINK+="ptp_hyperv"