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49 lines
1.4 KiB
Markdown
49 lines
1.4 KiB
Markdown
---
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title: Share an input device with a guest using evdev
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description:
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published: true
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date: 2023-02-08T19:09:01.244Z
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tags:
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editor: markdown
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dateCreated: 2022-08-13T00:26:02.801Z
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---
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# Share an input device
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In this section, we focus on sharing a device locally.
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## Virtio-input
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> Input grabbing on Wayland doesn't currently work as expected using Spice or VNC. Destkop environments based on the X session manager may work better.
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{.is-warning}
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## Event device
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Libvirt offers a very low-latency way to share an input device device with a local virtual machine, using the linux evdev event interface.
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Event device or simply `evdev` is a generic input event interface that is part of the Linux kernel.
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The following is an XML snippet example for sharing a mouse and a keyboard.
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```
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<input type='evdev'>
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<source dev='/dev/input/by-path/platform-i8042-serio-1-event-mouse/'>
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</input>
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<input type='evdev'>
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<source dev='/dev/input/by-path/platform-i8042-serio-0-event-kbd' grab='all' repeat='on'/>
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</input>
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```
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Replace the `platform-i8042-serio-1-event-mouse` value with the value under `/dev/input/by-path/*` or `/dev/input/by-id/*`
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If there are multiple possible options, the input device has to have `event` in the name.
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```
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# cat /dev/input/by-path/pci-0000:09:00.0-event-mouse
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```
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```
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<EFBFBD><EFBFBD>c $
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<EFBFBD><EFBFBD>c<EFBFBD><EFBFBD><EFBFBD>c<EFBFBD><EFBFBD><EFBFBD>c<EFBFBD>$<24><>c<EFBFBD>$<24><>c<63><D78F>c<63><D78F>c
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```
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