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Add support for unmarshalling new SEV-SNP message #105

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merged 2 commits into from
Jul 7, 2023
Merged

Add support for unmarshalling new SEV-SNP message #105

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8d63003
mshv-bindings: Add support for unaccepted GPA
jinankjain Apr 14, 2023
bf0a313
mshv-bindings: Unmarshal GPA attribute message
jinankjain Apr 14, 2023
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13 changes: 13 additions & 0 deletions mshv-bindings/src/unmarshal.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@ impl hv_message {
pub fn to_memory_info(&self) -> Result<hv_x64_memory_intercept_message> {
if self.header.message_type != hv_message_type_HVMSG_GPA_INTERCEPT
&& self.header.message_type != hv_message_type_HVMSG_UNMAPPED_GPA
&& self.header.message_type != hv_message_type_HVMSG_UNACCEPTED_GPA
{
return Err(errno::Error::new(libc::EINVAL));
}
Expand All @@ -35,6 +36,18 @@ impl hv_message {
Ok(ret)
}
#[inline]
pub fn to_gpa_attribute_info(&self) -> Result<hv_x64_gpa_attribute_intercept_message> {
if self.header.message_type != hv_message_type_HVMSG_GPA_ATTRIBUTE_INTERCEPT {
return Err(errno::Error::new(libc::EINVAL));
}
// SAFETY: We know at this point the payload is of the correct type. The payload field is
// unaligned. We use addr_of! to safely create a pointer, then call read_unaligned for
// copying its content out.
let ret =
unsafe { std::ptr::read_unaligned(std::ptr::addr_of!(self.u.payload) as *const _) };
Ok(ret)
}
#[inline]
pub fn to_ioport_info(&self) -> Result<hv_x64_io_port_intercept_message> {
if self.header.message_type != hv_message_type_HVMSG_X64_IO_PORT_INTERCEPT {
return Err(errno::Error::new(libc::EINVAL));
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