1SYSTEMD.DEVICE(5)               systemd.device               SYSTEMD.DEVICE(5)
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NAME

6       systemd.device - systemd device configuration files
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SYNOPSIS

9       systemd.device
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DESCRIPTION

12       A unit configuration file whose name ends in .device encodes
13       information about a device unit as exposed in the sysfs/udev(7) device
14       tree.
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16       This unit type has no specific options. See systemd.unit(5) for the
17       common options of all unit configuration files. The common
18       configuration items are configured in the generic [Unit] and [Install]
19       sections. A separate [Device] section does not exist, since no
20       device-specific options may be configured.
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22       systemd will automatically create dynamic device units for all kernel
23       devices that are marked with the "systemd" udev tag (by default all
24       block and network devices, and a few others). This may be used to
25       define dependencies between devices and other units.
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27       Device units are named after the /sys and /dev paths they control.
28       Example: the device /dev/sda5 is exposed in systemd as dev-sda5.device.
29       For details about the escaping logic used to convert a file system path
30       to a unit name see systemd.unit(5).
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THE UDEV DATABASE

33       The settings of device units may either be configured via unit files,
34       or directly from the udev database (which is recommended). The
35       following udev properties are understood by systemd:
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37       SYSTEMD_WANTS=
38           Adds dependencies of type Wants from this unit to all listed units.
39           This may be used to activate arbitrary units, when a specific
40           device becomes available. Note that this and the other tags are not
41           taken into account unless the device is tagged with the "systemd"
42           string in the udev database, because otherwise the device is not
43           exposed as systemd unit.
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45       SYSTEMD_ALIAS=
46           Adds an additional alias name to the device unit. This must be an
47           absolute path that is automatically transformed into a unit name.
48           (See above.)
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50       ID_MODEL_FROM_DATABASE=, ID_MODEL=
51           If set, this property is used as description string for the device
52           unit.
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SEE ALSO

55       systemd(1), systemctl(8), systemd.unit(5), udev(7)
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AUTHOR

58       Lennart Poettering <lennart@poettering.net>
59           Developer
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63systemd                           09/14/2010                 SYSTEMD.DEVICE(5)