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feature(zone): kernel command line control on launch (#351)

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This commit is contained in:
Alex Zenla
2024-08-21 13:51:09 -07:00
committed by GitHub
parent 1123a1a50a
commit 151b43eeec
13 changed files with 79 additions and 35 deletions
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2
crates/xen/xencall/examples/console_read.rs
View File

@ -6,7 +6,7 @@ async fn main() -> Result<()> {
env_logger::init();
let call = XenCall::open(0)?;
let index = 0 as u32;
let index = 0_u32;
let (buf, newindex) = call.read_console_ring_raw(false, index).await?;
match std::str::from_utf8(&buf[..newindex as usize]) {

16
crates/xen/xencall/src/lib.rs
View File

@ -26,8 +26,8 @@ use std::sync::Arc;
use std::time::Duration;
use sys::{
CpuId, E820Entry, ForeignMemoryMap, PhysdevMapPirq, Sysctl, SysctlCputopo, SysctlCputopoinfo,
SysctlPhysinfo, SysctlPmOp, SysctlPmOpValue, SysctlSetCpuFreqGov, SysctlValue, SysctlReadconsole,
VcpuGuestContextAny, HYPERVISOR_PHYSDEV_OP, HYPERVISOR_SYSCTL, PHYSDEVOP_MAP_PIRQ,
SysctlPhysinfo, SysctlPmOp, SysctlPmOpValue, SysctlReadconsole, SysctlSetCpuFreqGov,
SysctlValue, VcpuGuestContextAny, HYPERVISOR_PHYSDEV_OP, HYPERVISOR_SYSCTL, PHYSDEVOP_MAP_PIRQ,
XEN_DOMCTL_MAX_INTERFACE_VERSION, XEN_DOMCTL_MIN_INTERFACE_VERSION, XEN_MEM_SET_MEMORY_MAP,
XEN_SYSCTL_CPUTOPOINFO, XEN_SYSCTL_MAX_INTERFACE_VERSION, XEN_SYSCTL_MIN_INTERFACE_VERSION,
XEN_SYSCTL_PHYSINFO, XEN_SYSCTL_PM_OP, XEN_SYSCTL_PM_OP_DISABLE_TURBO,
@ -1088,7 +1088,11 @@ impl XenCall {
Ok(())
}
pub async fn read_console_ring_raw(&self, clear: bool, index: u32) -> Result<([u8; 16384], u32)> {
pub async fn read_console_ring_raw(
&self,
clear: bool,
index: u32,
) -> Result<([u8; 16384], u32)> {
let mut u8buf = [0u8; 16384];
let mut sysctl = Sysctl {
cmd: XEN_SYSCTL_READCONSOLE,
@ -1098,7 +1102,7 @@ impl XenCall {
clear: clear as u8,
incremental: 1,
pad: 0,
index: index,
index,
buffer: addr_of_mut!(u8buf) as u64,
count: 16384,
},
@ -1109,9 +1113,7 @@ impl XenCall {
// Safety: We are passing a SysctlReadconsole struct as part of the hypercall, and
// calling the hypercall is known to not change the underlying value outside changing
// the values on some SysctlReadconsole fields.
let newindex = unsafe {
sysctl.value.console.index
};
let newindex = unsafe { sysctl.value.console.index };
Ok((u8buf, newindex))
}
}