mirror of
https://github.com/edera-dev/krata.git
synced 2025-08-04 05:31:32 +00:00
oh my god, we have a console
This commit is contained in:
Alex Zenla
@ -5,16 +5,19 @@ pub mod mem;
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pub mod sys;
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mod x86;
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use crate::boot::BootSetup;
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use crate::create::DomainConfig;
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use crate::elfloader::ElfImageLoader;
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use std::error::Error;
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use std::fmt::{Display, Formatter};
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use std::fs::read;
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use std::string::FromUtf8Error;
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use xencall::domctl::DomainControl;
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use uuid::Uuid;
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use xencall::sys::CreateDomain;
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use xencall::{XenCall, XenCallError};
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use xenevtchn::EventChannelError;
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use xenstore::bus::XsdBusError;
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use xenstore::client::{XsdClient, XsdInterface};
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use xenstore::client::{XsPermissions, XsdClient, XsdInterface};
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pub struct XenClient {
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store: XsdClient,
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@ -83,29 +86,208 @@ impl XenClient {
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Ok(XenClient { store, call })
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}
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pub fn create(&mut self, config: DomainConfig) -> Result<(), XenClientError> {
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let domctl = DomainControl::new(&self.call);
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let domid = domctl.create_domain(CreateDomain::default())?;
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let domain = self.store.get_domain_path(domid)?;
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let vm = self.store.read_string(format!("{}/vm", domain).as_str())?;
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pub fn create(&mut self, config: DomainConfig) -> Result<u32, XenClientError> {
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let domain = CreateDomain {
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max_vcpus: config.max_vcpus,
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..Default::default()
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};
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let domid = self.call.create_domain(domain)?;
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let dom_path = self.store.get_domain_path(domid)?;
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let uuid_string = Uuid::from_bytes(domain.handle).to_string();
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let vm_path = format!("/vm/{}", uuid_string);
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let libxl_path = format!("/libxl/{}", domid);
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let ro_perm = XsPermissions { id: 0, perms: 0 };
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let rw_perm = XsPermissions { id: 0, perms: 0 };
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let no_perm = XsPermissions { id: 0, perms: 0 };
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{
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let mut tx = self.store.transaction()?;
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tx.rm(dom_path.as_str())?;
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tx.mknod(dom_path.as_str(), &ro_perm)?;
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tx.rm(vm_path.as_str())?;
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tx.mknod(vm_path.as_str(), &ro_perm)?;
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tx.rm(libxl_path.as_str())?;
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tx.mknod(vm_path.as_str(), &no_perm)?;
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tx.mknod(format!("{}/device", vm_path).as_str(), &no_perm)?;
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tx.write_string(format!("{}/vm", dom_path).as_str(), &vm_path)?;
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tx.mknod(format!("{}/cpu", dom_path).as_str(), &ro_perm)?;
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tx.mknod(format!("{}/memory", dom_path).as_str(), &ro_perm)?;
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tx.mknod(format!("{}/control", dom_path).as_str(), &ro_perm)?;
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tx.mknod(format!("{}/control/shutdown", dom_path).as_str(), &rw_perm)?;
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tx.mknod(
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format!("{}/control/feature-poweroff", dom_path).as_str(),
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&rw_perm,
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)?;
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tx.mknod(
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format!("{}/control/feature-reboot", dom_path).as_str(),
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&rw_perm,
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)?;
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tx.mknod(
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format!("{}/control/feature-suspend", dom_path).as_str(),
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&rw_perm,
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)?;
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tx.mknod(format!("{}/control/sysrq", dom_path).as_str(), &rw_perm)?;
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tx.mknod(format!("{}/data", dom_path).as_str(), &rw_perm)?;
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tx.mknod(format!("{}/drivers", dom_path).as_str(), &rw_perm)?;
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tx.mknod(format!("{}/feature", dom_path).as_str(), &rw_perm)?;
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tx.mknod(format!("{}/attr", dom_path).as_str(), &rw_perm)?;
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tx.mknod(format!("{}/error", dom_path).as_str(), &rw_perm)?;
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tx.write_string(
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format!("{}/uuid", vm_path).as_str(),
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&Uuid::from_bytes(domain.handle).to_string(),
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)?;
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tx.write_string(
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format!("{}/name", vm_path).as_str(),
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"mycelium",
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)?;
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tx.write_string(format!("{}/type", libxl_path).as_str(), "pv")?;
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tx.commit()?;
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}
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self.call.set_max_vcpus(domid, config.max_vcpus)?;
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self.call.set_max_mem(domid, config.mem_mb * 1024)?;
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let image_loader = ElfImageLoader::load_file_kernel(config.kernel_path.as_str())?;
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let console_evtchn: u32;
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let xenstore_evtchn: u32;
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let console_mfn: u64;
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let xenstore_mfn: u64;
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{
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let mut boot = BootSetup::new(&self.call, domid);
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let initrd = read(config.initrd_path.as_str())?;
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let mut state = boot.initialize(
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&image_loader,
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initrd.as_slice(),
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config.max_vcpus,
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config.mem_mb,
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)?;
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boot.boot(&mut state, config.cmdline.as_str())?;
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console_evtchn = state.console_evtchn;
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xenstore_evtchn = state.store_evtchn;
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console_mfn = boot.phys.p2m[state.console_segment.pfn as usize];
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xenstore_mfn = boot.phys.p2m[state.xenstore_segment.pfn as usize];
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}
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{
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let mut tx = self.store.transaction()?;
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tx.write_string(
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format!("{}/image/os_type", vm_path).as_str(),
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"linux",
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)?;
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tx.write_string(
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format!("{}/image/kernel", vm_path).as_str(),
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&config.kernel_path,
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)?;
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tx.write_string(
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format!("{}/image/ramdisk", vm_path).as_str(),
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&config.initrd_path,
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)?;
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tx.write_string(
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format!("{}/image/cmdline", vm_path).as_str(),
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&config.cmdline,
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)?;
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tx.write_string(
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format!("{}/memory/static-max", dom_path).as_str(),
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&(config.mem_mb * 1024).to_string(),
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)?;
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tx.write_string(
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format!("{}/memory/target", dom_path).as_str(),
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&(config.mem_mb * 1024).to_string(),
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)?;
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tx.write_string(
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format!("{}/memory/videoram", dom_path).as_str(),
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"0",
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)?;
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tx.write_string(format!("{}/domid", dom_path).as_str(), &domid.to_string())?;
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tx.write_string(
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format!("{}/store/port", dom_path).as_str(),
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&xenstore_evtchn.to_string(),
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)?;
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tx.write_string(
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format!("{}/store/ring-ref", dom_path).as_str(),
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&xenstore_mfn.to_string(),
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)?;
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for i in 0..config.max_vcpus {
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tx.write_string(
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format!("{}/cpu/{}/availability", dom_path, i).as_str(),
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"online",
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)?;
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}
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tx.commit()?;
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}
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self.console_device_add(&dom_path.to_string(), domid, console_evtchn, console_mfn)?;
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self.store
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.introduce_domain(domid, xenstore_mfn, xenstore_evtchn)?;
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self.call.unpause_domain(domid)?;
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Ok(domid)
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}
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fn console_device_add(
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&mut self,
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dom_path: &String,
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domid: u32,
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port: u32,
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mfn: u64,
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) -> Result<(), XenClientError> {
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let frontend_path = format!("{}/console", dom_path);
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let backend_path = format!("{}/backend/console/{}/{}", dom_path, domid, 0);
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let mut tx = self.store.transaction()?;
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tx.write_string(
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format!("{}/frontend-id", backend_path).as_str(),
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&domid.to_string(),
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)?;
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tx.write_string(
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format!("{}/online", backend_path).as_str(),
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"1",
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)?;
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tx.write_string(format!("{}/state", backend_path).as_str(), "1")?;
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tx.write_string(
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format!("{}/protocol", backend_path).as_str(),
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"vt100",
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)?;
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for (key, value) in config.clone_domain_entries() {
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let path = format!("{}/{}", domain, key);
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tx.write(path.as_str(), value.into_bytes())?;
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}
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let domid_path = format!("{}/domid", domain);
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tx.write(domid_path.as_str(), domid.to_string().into_bytes())?;
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for (key, value) in config.clone_domain_entries() {
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let path = format!("{}/{}", vm, key);
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tx.write(path.as_str(), value.into_bytes())?;
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}
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tx.write_string(
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format!("{}/backend-id", frontend_path).as_str(),
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"0",
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)?;
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tx.write_string(
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format!("{}/limit", frontend_path).as_str(),
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"1048576",
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)?;
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tx.write_string(
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format!("{}/type", frontend_path).as_str(),
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"xenconsoled",
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)?;
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tx.write_string(
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format!("{}/output", frontend_path).as_str(),
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"pty",
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)?;
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tx.write_string(format!("{}/tty", frontend_path).as_str(), "")?;
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tx.write_string(
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format!("{}/port", frontend_path).as_str(),
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&port.to_string(),
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)?;
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tx.write_string(
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format!("{}/ring-ref", frontend_path).as_str(),
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&mfn.to_string(),
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)?;
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tx.commit()?;
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Ok(())
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}
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}
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