Function linux_loader::loader::load_cmdline

source · [−]
pub fn load_cmdline<M: GuestMemory>(
    guest_mem: &M,
    guest_addr: GuestAddress,
    cmdline: &Cmdline
) -> Result<()>
Expand description

Writes the command line string to the given guest memory slice.

Arguments

  • guest_mem - GuestMemory that will be partially overwritten by the command line.
  • guest_addr - The address in guest_mem at which to load the command line.
  • cmdline - The kernel command line.

Examples

let mem_size: usize = 0x1000000;
let gm = GuestMemoryMmap::from_ranges(&[(GuestAddress(0x0), mem_size)]).unwrap();
let mut cl = Cmdline::new(10).unwrap();
cl.insert("foo", "bar");
let mut buf = vec![0u8;8];
let result = load_cmdline(&gm, GuestAddress(0x1000), &cl).unwrap();
gm.read_slice(buf.as_mut_slice(), GuestAddress(0x1000)).unwrap();
assert_eq!(buf.as_slice(), "foo=bar\0".as_bytes());