Function proc_exec4 

pub fn proc_exec4<M: MemorySize>(
    ctx: FunctionEnvMut<'_, WasiEnv>,
    name: WasmPtr<u8, M>,
    name_len: M::Offset,
    args: WasmPtr<WasmPtr<u8, M>, M>,
    args_len: M::Offset,
    envs: WasmPtr<WasmPtr<u8, M>, M>,
    envs_len: M::Offset,
    search_path: Bool,
    path: WasmPtr<u8, M>,
    path_len: M::Offset,
) -> Result<Errno, WasiError>

Replaces the current process with a new process, with proper WasmPtr<WasmPtr<u8>> string lists.

Successor to proc_exec3. args and envs are pointer arrays of null-terminated strings with args_len / envs_len as element counts. A null envs pointer inherits the current environment.

Return

If the execution fails, returns an error code. Does not return otherwise.