Function fuse_opt_add_arg 

pub unsafe extern "C" fn fuse_opt_add_arg(
    args: *mut fuse_args,
    arg: *const c_char,
) -> c_int

Add an argument to a NULL terminated argument vector

@param args is the structure containing the current argument list @param arg is the new argument to add @return -1 on allocation error, 0 on success