systemd/rules.d/60-persistent-alsa.rules

# do not edit this file, it will be overwritten on update

ACTION=="remove", GOTO="persistent_alsa_end"
SUBSYSTEM!="sound", GOTO="persistent_alsa_end"
KERNEL!="controlC[0-9]*", GOTO="persistent_alsa_end"

SUBSYSTEMS=="usb", ENV{ID_MODEL}=="", IMPORT{builtin}="usb_id"
ENV{ID_SERIAL}=="?*", ENV{ID_USB_INTERFACE_NUM}=="?*", SYMLINK+="snd/by-id/$env{ID_BUS}-$env{ID_SERIAL}-$env{ID_USB_INTERFACE_NUM}"
ENV{ID_SERIAL}=="?*", ENV{ID_USB_INTERFACE_NUM}=="", SYMLINK+="snd/by-id/$env{ID_BUS}-$env{ID_SERIAL}"

IMPORT{builtin}="path_id"
ENV{ID_PATH}=="?*",                   SYMLINK+="snd/by-path/$env{ID_PATH}"
ENV{ID_PATH_WITH_USB_REVISION}=="?*", SYMLINK+="snd/by-path/$env{ID_PATH_WITH_USB_REVISION}"

LABEL="persistent_alsa_end"
rules: sound - move from udev-extra 2009-06-16 18:26:20 +00:00			`# do not edit this file, it will be overwritten on update`

replace "add\|change" with "!remove" 2010-04-12 14:52:41 +00:00			`ACTION=="remove", GOTO="persistent_alsa_end"`
rules: sound - move from udev-extra 2009-06-16 18:26:20 +00:00			`SUBSYSTEM!="sound", GOTO="persistent_alsa_end"`
			`KERNEL!="controlC[0-9]*", GOTO="persistent_alsa_end"`

implement path_id, usb_id, input_id as built-in command 2011-08-05 00:00:30 +00:00			`SUBSYSTEMS=="usb", ENV{ID_MODEL}=="", IMPORT{builtin}="usb_id"`
rules: sound - instead of ID_IFACE use standard ID_USB_INTERFACE_NUM 2011-07-19 22:21:07 +00:00			`ENV{ID_SERIAL}=="?", ENV{ID_USB_INTERFACE_NUM}=="?", SYMLINK+="snd/by-id/$env{ID_BUS}-$env{ID_SERIAL}-$env{ID_USB_INTERFACE_NUM}"`
			`ENV{ID_SERIAL}=="?*", ENV{ID_USB_INTERFACE_NUM}=="", SYMLINK+="snd/by-id/$env{ID_BUS}-$env{ID_SERIAL}"`
rules: sound - move from udev-extra 2009-06-16 18:26:20 +00:00
implement path_id, usb_id, input_id as built-in command 2011-08-05 00:00:30 +00:00			`IMPORT{builtin}="path_id"`
udev: add USB revision in ID_PATH xHCI host controller may register two (or more?) USB root hubs for USB 2.0 and USB 3.0, and devices under the hubs may have same ID_PATH. So, to avoid the conflict, let's introduce ID_PATH_WITH_USB_REVISION that includes the USB revision. Closes #19406. 2023-05-01 17:28:35 +00:00			`ENV{ID_PATH}=="?*", SYMLINK+="snd/by-path/$env{ID_PATH}"`
			`ENV{ID_PATH_WITH_USB_REVISION}=="?*", SYMLINK+="snd/by-path/$env{ID_PATH_WITH_USB_REVISION}"`
rules: sound - move from udev-extra 2009-06-16 18:26:20 +00:00
			`LABEL="persistent_alsa_end"`