Server could accept uid < ULONG_MAX. But client can only accept uid<LONG_MAX. There is a gap between client and server. Variable l is defiled as signed long. Is it possible to extend?

sftp> chown 2147483648 execute.sh
You must supply a numeric argument to the chown command.


	case I_CHOWN:
	case I_CHGRP:
		if ((optidx = parse_ch_flags(cmd, argv, argc, hflag)) == -1)
			return -1;
		/* Get numeric arg (mandatory) */
		if (argc - optidx < 1)
			goto need_num_arg;
		errno = 0;
		l = strtol(argv[optidx], &cp2, base);
		if (cp2 == argv[optidx] || *cp2 != '\0' ||
		    ((l == LONG_MIN || l == LONG_MAX) && errno == ERANGE) ||
		    l < 0) {
 need_num_arg:
			error("You must supply a numeric argument "
			    "to the %s command.", cmd);
			return -1;
		}