56 lines
1.6 KiB
Rust
56 lines
1.6 KiB
Rust
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use super::*;
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use crate::events::IoEvents;
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use crate::fs::inode_handle::FileIo;
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use crate::fs::utils::IoctlCmd;
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use crate::process::signal::Poller;
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use crate::util::{read_val_from_user, write_val_to_user};
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use tdx_guest::tdcall::get_report;
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const TDX_REPORTDATA_LEN: usize = 64;
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const TDX_REPORT_LEN: usize = 1024;
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#[derive(Debug, Clone, Copy, Pod)]
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#[repr(C)]
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pub struct TdxReportRequest {
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reportdata: [u8; TDX_REPORTDATA_LEN],
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tdreport: [u8; TDX_REPORT_LEN],
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}
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pub struct TdxGuest;
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impl Device for TdxGuest {
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fn type_(&self) -> DeviceType {
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DeviceType::MiscDevice
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}
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fn id(&self) -> DeviceId {
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DeviceId::new(10, 0)
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}
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}
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impl FileIo for TdxGuest {
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fn read(&self, buf: &mut [u8]) -> Result<usize> {
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return_errno_with_message!(Errno::EPERM, "Read operation not supported")
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}
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fn write(&self, buf: &[u8]) -> Result<usize> {
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return_errno_with_message!(Errno::EPERM, "Write operation not supported")
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}
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fn ioctl(&self, cmd: IoctlCmd, arg: usize) -> Result<i32> {
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match cmd {
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IoctlCmd::TDXGETREPORT => {
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let tdx_report: TdxReportRequest = read_val_from_user(arg)?;
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get_report(&tdx_report.tdreport, &tdx_report.reportdata).unwrap();
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write_val_to_user(arg, &tdx_report)?;
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Ok(0)
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}
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_ => return_errno_with_message!(Errno::EPERM, "Unsupported ioctl"),
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}
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}
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fn poll(&self, mask: IoEvents, poller: Option<&Poller>) -> IoEvents {
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let events = IoEvents::IN | IoEvents::OUT;
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events & mask
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}
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}
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