Method get_dump_state

vmm/src/vm.rs:3181–3219

(
        &mut self,
        destination_url: &str,
    )

    #[cfg(all(target_arch = "x86_64", feature = "guest_debug"))]
    fn get_dump_state(
        &mut self,
        destination_url: &str,
    ) -> std::result::Result<DumpState, GuestDebuggableError> {
        let nr_cpus = self.config.lock().unwrap().cpus.boot_vcpus;
        let elf_note_size = self.get_note_size(NoteDescType::ElfAndVmm, nr_cpus) as isize;
        let mut elf_phdr_num = 1;
        let elf_sh_info = 0;
        let coredump_file_path = url_to_file(destination_url)?;
        let mapping_num = self.memory_manager.lock().unwrap().num_guest_ram_mappings();

        if mapping_num < UINT16_MAX - 2 {
            elf_phdr_num += mapping_num as u16;
        } else {
            panic!("mapping num beyond 65535 not supported");
        }
        let coredump_file = OpenOptions::new()
            .read(true)
            .write(true)
            .create_new(true)
            .open(coredump_file_path)
            .map_err(|e| GuestDebuggableError::Coredump(e.into()))?;

        let mem_offset = self.coredump_get_mem_offset(elf_phdr_num, elf_note_size);
        let mem_data = self
            .memory_manager
            .lock()
            .unwrap()
            .coredump_memory_regions(mem_offset);

        Ok(DumpState {
            elf_note_size,
            elf_phdr_num,
            elf_sh_info,
            mem_offset,
            mem_info: Some(mem_data),
            file: Some(coredump_file),
        })
    }

    #[cfg(all(target_arch = "x86_64", feature = "guest_debug"))]
    fn coredump_get_mem_offset(&self, phdr_num: u16, note_size: isize) -> u64 {