kata-containers/cloud-hypervisor
1
0
Fork 0
mirror of https://github.com/cloud-hypervisor/cloud-hypervisor.git synced 2026-08-05 02:19:16 +00:00
Code Issues Packages Projects Releases Wiki Activity

vmm: Unix socket backend for serial port

Browse Source 
Cloud-Hypervisor takes a path for Unix socket, where it will listen
on. Users can connect to the other end of the socket and access serial
port on the guest.

    "--serial socket=/path/to/socket" is the cmdline option to pass to
cloud-hypervisor.

Users can use socat like below to access guest's serial port once the
guest starts to boot:

    socat -,crnl UNIX-CONNECT:/path/to/socket

Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
This commit is contained in:
Praveen K Paladugu
2023-06-08 19:41:37 +00:00
committed by Rob Bradford
parent 399c596af8
commit 6d1077fc3c
9 changed files with 177 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
vmm/src/device_manager.rs
View File

@@ -395,6 +395,9 @@ pub enum DeviceManagerError {
/// No support for device passthrough
NoDevicePassthroughSupport,
/// No socket option support for console device
NoSocketOptionSupportForConsoleDevice,
/// Failed to resize virtio-balloon
VirtioBalloonResize(virtio_devices::balloon::Error),
@@ -1995,6 +1998,9 @@ impl DeviceManager {
Endpoint::File(stdout)
}
}
ConsoleOutputMode::Socket => {
return Err(DeviceManagerError::NoSocketOptionSupportForConsoleDevice);
}
ConsoleOutputMode::Null => Endpoint::Null,
ConsoleOutputMode::Off => return Ok(None),
};
@@ -2074,15 +2080,19 @@ impl DeviceManager {
let _ = self.set_raw_mode(&out);
Some(Box::new(out))
}
ConsoleOutputMode::Off | ConsoleOutputMode::Null => None,
ConsoleOutputMode::Off | ConsoleOutputMode::Null | ConsoleOutputMode::Socket => None,
};
if serial_config.mode != ConsoleOutputMode::Off {
let serial = self.add_serial_device(interrupt_manager, serial_writer)?;
self.serial_manager = match serial_config.mode {
ConsoleOutputMode::Pty | ConsoleOutputMode::Tty => {
let serial_manager =
SerialManager::new(serial, self.serial_pty.clone(), serial_config.mode)
.map_err(DeviceManagerError::CreateSerialManager)?;
ConsoleOutputMode::Pty | ConsoleOutputMode::Tty | ConsoleOutputMode::Socket => {
let serial_manager = SerialManager::new(
serial,
self.serial_pty.clone(),
serial_config.mode,
serial_config.socket,
)
.map_err(DeviceManagerError::CreateSerialManager)?;
if let Some(mut serial_manager) = serial_manager {
serial_manager
.start_thread(