[
    // Register information providers that knows block devices
    (
        when: All([
            Match("ACTION", "add"),
            Match("SUBSYSTEM", "block"),
            Match("DEVNODE", ".*"),
        ]),
        do: [
            UseProvider("FSUUID", f("blkid -o value -s UUID {DEVNODE}")),
        ],
        on_error: Continue,
    ),
    (
        when: Match("FSUUID", ""),
        do: [Unset("FSUUID")],
    ),
    (
        when: All([
            Match("ACTION", "add"),
            Match("SUBSYSTEM", "block"),
            Match("DEVNODE", ".*"),
        ]),
        do: [
            UseProvider("FSLABEL", f("blkid -o value -s LABEL {DEVNODE}")),
        ],
        on_error: Continue,
    ),
    (
        when: Match("FSLABEL", ""),
        do: [Unset("FSLABEL")],
    ),

    // Create link aliases for block devices
    (
        when: All([
            Match("ACTION", "add"),
            Match("SUBSYSTEM", "block"),
            Match("PARTUUID", ".+"),
        ]),
        do: [Add("SYMLINKS", f("{DEVROOT}/disk/by-partuuid/{PARTUUID}"))],
    ),
    (
        when: All([
            Match("ACTION", "add"),
            Match("SUBSYSTEM", "block"),
            Match("DISKSEQ", ".+"),
            Match("DEVTYPE", "disk"),
        ]),
        do: [Add("SYMLINKS", f("{DEVROOT}/disk/by-diskseq/{DISKSEQ}"))],
    ),
    (
        when: All([
            Match("ACTION", "add"),
            Match("SUBSYSTEM", "block"),
            Match("FSUUID", ".+"),
        ]),
        do: [Add("SYMLINKS", f("{DEVROOT}/disk/by-uuid/{FSUUID}"))],
    ),
    (
        when: All([
            Match("ACTION", "add"),
            Match("SUBSYSTEM", "block"),
            Match("FSLABEL", ".+"),
        ]),
        do: [Add("SYMLINKS", f("{DEVROOT}/disk/by-label/{FSLABEL}"))],
    ),
    (
        when: All([
            Match("ACTION", "add"),
            Match("SUBSYSTEM", "block"),
            Match("MAJOR", ".+"),
            Match("MINOR", ".+"),
        ]),
        do: [Add("SYMLINKS", f("{DEVROOT}/block/{MAJOR}:{MINOR}"))],
    ),
]