Type: unix-char

Note

The unix-char device type is supported for containers. It supports hotplugging.

Unix character devices make the specified character device appear as a device in the instance (under /dev). You can read from the device and write to it.

Device options

unix-char devices have the following device options:

gid

GID of the device owner in the instance

Key: gid
Type:

int
Default:

0
major

Device major number

Key: major
Type:

int
Default:

device on host
minor

Device minor number

Key: minor
Type:

int
Default:

device on host
mode

Mode of the device in the instance

Key: mode
Type:

int
Default:

0660
path

Path inside the instance (one of source and path must be set)

Key: path
Type:

string
required

Whether this device is required to start the instance

Key: required
Type:

bool
Default:

true
source

Path on the host (one of source and path must be set)

Key: source
Type:

string
uid

UID of the device owner in the instance

Key: uid
Type:

int
Default:

0

Hotplugging

Hotplugging is enabled if you set required=false and specify the source option for the device.

In this case, the device is automatically passed into the container when it appears on the host, even after the container starts. If the device disappears from the host system, it is removed from the container as well.