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Add support for reading hypervisor console (#344)

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* feature(xencall): add hypervisor SYSCTL_readconsole definitions

* feature(hypervisor-dmesg): xencall: add read_console_ring_raw hypercall wrapper

* feature(hypervisor-dmesg): protobuf: add ReadHypervisorConsoleRing RPC

* feature(hypervisor-dmesg): runtime: add read_hypervisor_console wrapper

* feature(hypervisor-dmesg): daemon: add ReadHypervisorConsoleRing rpc implementation

* feature(hypervisor-dmesg): ctl: add host hypervisor-messages command to get hypervisor messages

* feature(hypervisor-dmesg): cli: rename hypervisor-messages command to hv-console

* feature(hypervisor-dmesg): proto: change ReadHypervisorConsoleRing to ReadHypervisorConsole

* feature(hypervisor-dmesg): fix up kratactl protobuf calls
This commit is contained in:
Ariadne Conill
2024-08-19 16:49:02 -07:00
committed by GitHub
parent 2519d76479
commit 2ab2cda937
8 changed files with 118 additions and 2 deletions
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18
crates/xen/xencall/examples/console_read.rs Normal file
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use xencall::error::Result;
use xencall::XenCall;
#[tokio::main]
async fn main() -> Result<()> {
env_logger::init();
let call = XenCall::open(0)?;
let index = 0 as u32;
let (buf, newindex) = call.read_console_ring_raw(false, index).await?;
match std::str::from_utf8(&buf[..newindex as usize]) {
Ok(v) => print!("{}", v),
_ => panic!("unable to decode Xen console messages"),
};
Ok(())
}