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Signed-off-by: Ludvig Liljenberg <lliljenberg@microsoft.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| use std::io::Write; | ||
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| use tempfile::NamedTempFile; | ||
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| use super::Hypervisor; | ||
| use crate::{new_error, Result}; | ||
|
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| /// Dump registers + memory regions + raw memory to a tempfile | ||
| #[cfg(crashdump)] | ||
| pub(crate) fn crashdump_to_tempfile(hv: &dyn Hypervisor) -> Result<()> { | ||
| let mem_regions = hv.get_memory_regions(); | ||
| let mem_size = mem_regions | ||
| .iter() | ||
| .map(|region| region.host_region.len()) | ||
| .sum(); | ||
| let mem_start_addr = mem_regions[0].host_region.start as *const u8; | ||
|
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| if mem_start_addr.is_null() || mem_size == 0 { | ||
| return Err(new_error!( | ||
| "Invalid address or size while creating crashdump" | ||
| )); | ||
| } | ||
|
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| let mut temp_file = NamedTempFile::with_prefix("mem")?; | ||
|
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| let hv_details = format!("{:#x?}", hv); | ||
|
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| // write hypervisor details such as registers, memory regions, etc. | ||
| temp_file.write_all(hv_details.as_bytes())?; | ||
| // write memory dump | ||
| temp_file.write_all(b"================ MEMORY DUMP =================\n")?; | ||
| // SAFETY: Address and size non-null and non-zero | ||
| unsafe { | ||
| let slice = std::slice::from_raw_parts(mem_start_addr, mem_size); | ||
| temp_file.write_all(slice)?; | ||
| temp_file.flush()?; | ||
| } | ||
| let persist_path = temp_file.path().with_extension("dmp"); | ||
| temp_file | ||
| .persist(&persist_path) | ||
| .map_err(|e| new_error!("Failed to persist crashdump file: {:?}", e))?; | ||
|
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| println!("Memory dumped to file: {:?}", persist_path); | ||
| log::error!("Memory dumped to file: {:?}", persist_path); | ||
|
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| Ok(()) | ||
| } |
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