Function fuse_opt_insert_arg 

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

Add an argument at the specified position in a NULL terminated argument vector

Adds the argument to the N-th position. This is useful for adding options at the beginning of the array which must not come after the special ‘–’ option.

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