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os: build bootable images

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This commit is contained in:
Alex Zenla
2024-03-10 00:22:24 +00:00
parent 817509bcef
commit 4894bd9d1c
28 changed files with 384 additions and 82 deletions
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104
crates/xen/xencall/src/lib.rs
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@ -3,22 +3,22 @@ pub mod sys;
use crate::error::{Error, Result};
use crate::sys::{
AddressSize, ArchDomainConfig, CreateDomain, DomCtl, DomCtlValue, DomCtlVcpuContext,
EvtChnAllocUnbound, GetDomainInfo, GetPageFrameInfo3, Hypercall, HypercallInit, MaxMem,
MaxVcpus, MemoryMap, MemoryReservation, MmapBatch, MmapResource, MmuExtOp, MultiCallEntry,
VcpuGuestContext, VcpuGuestContextAny, XenCapabilitiesInfo, HYPERVISOR_DOMCTL,
HYPERVISOR_EVENT_CHANNEL_OP, HYPERVISOR_MEMORY_OP, HYPERVISOR_MMUEXT_OP, HYPERVISOR_MULTICALL,
HYPERVISOR_XEN_VERSION, XENVER_CAPABILITIES, XEN_DOMCTL_CREATEDOMAIN, XEN_DOMCTL_DESTROYDOMAIN,
AddressSize, CreateDomain, DomCtl, DomCtlValue, DomCtlVcpuContext, EvtChnAllocUnbound,
GetDomainInfo, GetPageFrameInfo3, Hypercall, HypercallInit, MaxMem, MaxVcpus, MemoryMap,
MemoryReservation, MmapBatch, MmapResource, MmuExtOp, MultiCallEntry, VcpuGuestContext,
VcpuGuestContextAny, XenCapabilitiesInfo, HYPERVISOR_DOMCTL, HYPERVISOR_EVENT_CHANNEL_OP,
HYPERVISOR_MEMORY_OP, HYPERVISOR_MMUEXT_OP, HYPERVISOR_MULTICALL, HYPERVISOR_XEN_VERSION,
XENVER_CAPABILITIES, XEN_DOMCTL_CREATEDOMAIN, XEN_DOMCTL_DESTROYDOMAIN,
XEN_DOMCTL_GETDOMAININFO, XEN_DOMCTL_GETPAGEFRAMEINFO3, XEN_DOMCTL_GETVCPUCONTEXT,
XEN_DOMCTL_HYPERCALL_INIT, XEN_DOMCTL_INTERFACE_VERSION, XEN_DOMCTL_MAX_MEM,
XEN_DOMCTL_MAX_VCPUS, XEN_DOMCTL_PAUSEDOMAIN, XEN_DOMCTL_SETVCPUCONTEXT,
XEN_DOMCTL_SET_ADDRESS_SIZE, XEN_DOMCTL_UNPAUSEDOMAIN, XEN_MEM_CLAIM_PAGES, XEN_MEM_MEMORY_MAP,
XEN_MEM_POPULATE_PHYSMAP,
XEN_DOMCTL_HYPERCALL_INIT, XEN_DOMCTL_MAX_MEM, XEN_DOMCTL_MAX_VCPUS, XEN_DOMCTL_PAUSEDOMAIN,
XEN_DOMCTL_SETVCPUCONTEXT, XEN_DOMCTL_SET_ADDRESS_SIZE, XEN_DOMCTL_UNPAUSEDOMAIN,
XEN_MEM_CLAIM_PAGES, XEN_MEM_MEMORY_MAP, XEN_MEM_POPULATE_PHYSMAP,
};
use libc::{c_int, mmap, usleep, MAP_FAILED, MAP_SHARED, PROT_READ, PROT_WRITE};
use log::trace;
use nix::errno::Errno;
use std::ffi::{c_long, c_uint, c_ulong, c_void};
use sys::{XEN_DOMCTL_MAX_INTERFACE_VERSION, XEN_DOMCTL_MIN_INTERFACE_VERSION};
use std::fs::{File, OpenOptions};
use std::os::fd::AsRawFd;
@ -27,15 +27,45 @@ use std::slice;
pub struct XenCall {
pub handle: File,
domctl_interface_version: u32,
}
impl XenCall {
pub fn open() -> Result<XenCall> {
let file = OpenOptions::new()
pub fn open(current_domid: u32) -> Result<XenCall> {
let handle = OpenOptions::new()
.read(true)
.write(true)
.open("/dev/xen/privcmd")?;
Ok(XenCall { handle: file })
let domctl_interface_version =
XenCall::detect_domctl_interface_version(&handle, current_domid)?;
Ok(XenCall {
handle,
domctl_interface_version,
})
}
fn detect_domctl_interface_version(handle: &File, current_domid: u32) -> Result<u32> {
for version in XEN_DOMCTL_MIN_INTERFACE_VERSION..XEN_DOMCTL_MAX_INTERFACE_VERSION + 1 {
let mut domctl = DomCtl {
cmd: XEN_DOMCTL_GETDOMAININFO,
interface_version: version,
domid: current_domid,
value: DomCtlValue {
get_domain_info: GetDomainInfo::default(),
},
};
unsafe {
let mut call = Hypercall {
op: HYPERVISOR_DOMCTL,
arg: [addr_of_mut!(domctl) as u64, 0, 0, 0, 0],
};
let result = sys::hypercall(handle.as_raw_fd(), &mut call).unwrap_or(-1);
if result == 0 {
return Ok(version);
}
}
}
Err(Error::XenVersionUnsupported)
}
pub fn mmap(&self, addr: u64, len: u64) -> Option<u64> {
@ -275,32 +305,10 @@ impl XenCall {
);
let mut domctl = DomCtl {
cmd: XEN_DOMCTL_GETDOMAININFO,
interface_version: XEN_DOMCTL_INTERFACE_VERSION,
interface_version: self.domctl_interface_version,
domid,
value: DomCtlValue {
get_domain_info: GetDomainInfo {
domid: 0,
pad1: 0,
flags: 0,
total_pages: 0,
max_pages: 0,
outstanding_pages: 0,
shr_pages: 0,
paged_pages: 0,
shared_info_frame: 0,
cpu_time: 0,
number_online_vcpus: 0,
max_vcpu_id: 0,
ssidref: 0,
handle: [0; 16],
cpupool: 0,
gpaddr_bits: 0,
pad2: [0; 7],
arch: ArchDomainConfig {
emulation_flags: 0,
misc_flags: 0,
},
},
get_domain_info: GetDomainInfo::default(),
},
};
self.hypercall1(HYPERVISOR_DOMCTL, addr_of_mut!(domctl) as c_ulong)?;
@ -315,7 +323,7 @@ impl XenCall {
);
let mut domctl = DomCtl {
cmd: XEN_DOMCTL_CREATEDOMAIN,
interface_version: XEN_DOMCTL_INTERFACE_VERSION,
interface_version: self.domctl_interface_version,
domid: 0,
value: DomCtlValue { create_domain },
};
@ -331,7 +339,7 @@ impl XenCall {
);
let mut domctl = DomCtl {
cmd: XEN_DOMCTL_PAUSEDOMAIN,
interface_version: XEN_DOMCTL_INTERFACE_VERSION,
interface_version: self.domctl_interface_version,
domid,
value: DomCtlValue { pad: [0; 128] },
};
@ -347,7 +355,7 @@ impl XenCall {
);
let mut domctl = DomCtl {
cmd: XEN_DOMCTL_UNPAUSEDOMAIN,
interface_version: XEN_DOMCTL_INTERFACE_VERSION,
interface_version: self.domctl_interface_version,
domid,
value: DomCtlValue { pad: [0; 128] },
};
@ -364,7 +372,7 @@ impl XenCall {
);
let mut domctl = DomCtl {
cmd: XEN_DOMCTL_MAX_MEM,
interface_version: XEN_DOMCTL_INTERFACE_VERSION,
interface_version: self.domctl_interface_version,
domid,
value: DomCtlValue {
max_mem: MaxMem { max_memkb: memkb },
@ -383,7 +391,7 @@ impl XenCall {
);
let mut domctl = DomCtl {
cmd: XEN_DOMCTL_MAX_VCPUS,
interface_version: XEN_DOMCTL_INTERFACE_VERSION,
interface_version: self.domctl_interface_version,
domid,
value: DomCtlValue {
max_cpus: MaxVcpus { max_vcpus },
@ -402,7 +410,7 @@ impl XenCall {
);
let mut domctl = DomCtl {
cmd: XEN_DOMCTL_SET_ADDRESS_SIZE,
interface_version: XEN_DOMCTL_INTERFACE_VERSION,
interface_version: self.domctl_interface_version,
domid,
value: DomCtlValue {
address_size: AddressSize { size },
@ -423,7 +431,7 @@ impl XenCall {
};
let mut domctl = DomCtl {
cmd: XEN_DOMCTL_GETVCPUCONTEXT,
interface_version: XEN_DOMCTL_INTERFACE_VERSION,
interface_version: self.domctl_interface_version,
domid,
value: DomCtlValue {
vcpu_context: DomCtlVcpuContext {
@ -452,7 +460,7 @@ impl XenCall {
let mut value = VcpuGuestContextAny { value: *context };
let mut domctl = DomCtl {
cmd: XEN_DOMCTL_SETVCPUCONTEXT,
interface_version: XEN_DOMCTL_INTERFACE_VERSION,
interface_version: self.domctl_interface_version,
domid,
value: DomCtlValue {
vcpu_context: DomCtlVcpuContext {
@ -469,7 +477,7 @@ impl XenCall {
let mut buffer: Vec<u64> = frames.to_vec();
let mut domctl = DomCtl {
cmd: XEN_DOMCTL_GETPAGEFRAMEINFO3,
interface_version: XEN_DOMCTL_INTERFACE_VERSION,
interface_version: self.domctl_interface_version,
domid,
value: DomCtlValue {
get_page_frame_info: GetPageFrameInfo3 {
@ -497,7 +505,7 @@ impl XenCall {
);
let mut domctl = DomCtl {
cmd: XEN_DOMCTL_HYPERCALL_INIT,
interface_version: XEN_DOMCTL_INTERFACE_VERSION,
interface_version: self.domctl_interface_version,
domid,
value: DomCtlValue {
hypercall_init: HypercallInit { gmfn },
@ -515,7 +523,7 @@ impl XenCall {
);
let mut domctl = DomCtl {
cmd: XEN_DOMCTL_DESTROYDOMAIN,
interface_version: XEN_DOMCTL_INTERFACE_VERSION,
interface_version: self.domctl_interface_version,
domid,
value: DomCtlValue { pad: [0; 128] },
};