options.c

Rsync 3.0.5 source code

	} else if (omit_dir_times) {
		if (preserve_times > 1)
			preserve_times = 1;
	}

	if (stdout_format) {
		if (am_server && log_format_has(stdout_format, 'I'))
			stdout_format_has_i = 2;
		else if (log_format_has(stdout_format, 'i'))
			stdout_format_has_i = itemize_changes | 1;
		if (!log_format_has(stdout_format, 'b')
		 && !log_format_has(stdout_format, 'c'))
			log_before_transfer = !am_server;
	} else if (itemize_changes) {
		stdout_format = "%i %n%L";
		stdout_format_has_i = itemize_changes;
		log_before_transfer = !am_server;
	}

	if (do_progress && !verbose && !log_before_transfer && !am_server)
		verbose = 1;

	if (dry_run)
		do_xfers = 0;

	set_io_timeout(io_timeout);

	if (verbose && !stdout_format) {
		stdout_format = "%n%L";
		log_before_transfer = !am_server;
	}
	if (stdout_format_has_i || log_format_has(stdout_format, 'o'))
		stdout_format_has_o_or_i = 1;

	if (logfile_name && !am_daemon) {
		if (!logfile_format) {
			logfile_format = "%i %n%L";
			logfile_format_has_i = logfile_format_has_o_or_i = 1;
		} else {
			if (log_format_has(logfile_format, 'i'))
				logfile_format_has_i = 1;
			if (logfile_format_has_i || log_format_has(logfile_format, 'o'))
				logfile_format_has_o_or_i = 1;
		}
		log_init(0);
	} else if (!am_daemon)
		logfile_format = NULL;

	if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
		bwlimit = daemon_bwlimit;
	if (bwlimit) {
		bwlimit_writemax = (size_t)bwlimit * 128;
		if (bwlimit_writemax < 512)
			bwlimit_writemax = 512;
	}

	if (sparse_files && inplace) {
		/* Note: we don't check for this below, because --append is
		 * OK with --sparse (as long as redos are handled right). */
		snprintf(err_buf, sizeof err_buf,
			 "--sparse cannot be used with --inplace\n");
		return 0;
	}

	if (append_mode) {
		if (whole_file > 0) {
			snprintf(err_buf, sizeof err_buf,
				 "--append cannot be used with --whole-file\n");
			return 0;
		}
		if (refused_inplace) {
			create_refuse_error(refused_inplace);
			return 0;
		}
		inplace = 1;
	}

	if (delay_updates && !partial_dir)
		partial_dir = tmp_partialdir;

	if (inplace) {
#ifdef HAVE_FTRUNCATE
		if (partial_dir) {
			snprintf(err_buf, sizeof err_buf,
				 "--%s cannot be used with --%s\n",
				 append_mode ? "append" : "inplace",
				 delay_updates ? "delay-updates" : "partial-dir");
			return 0;
		}
		/* --inplace implies --partial for refusal purposes, but we
		 * clear the keep_partial flag for internal logic purposes. */
		if (refused_partial) {
			create_refuse_error(refused_partial);
			return 0;
		}
		keep_partial = 0;
#else
		snprintf(err_buf, sizeof err_buf,
			 "--%s is not supported on this %s\n",
			 append_mode ? "append" : "inplace",
			 am_server ? "server" : "client");
		return 0;
#endif
	} else {
		if (keep_partial && !partial_dir && !am_server) {
			if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
				partial_dir = strdup(arg);
		}
		if (partial_dir) {
			if (*partial_dir)
				clean_fname(partial_dir, CFN_COLLAPSE_DOT_DOT_DIRS);
			if (!*partial_dir || strcmp(partial_dir, ".") == 0)
				partial_dir = NULL;
			if (!partial_dir && refused_partial) {
				create_refuse_error(refused_partial);
				return 0;
			}
			keep_partial = 1;
		}
	}

	if (files_from) {
		char *h, *p;
		int q;
		if (argc > 2 || (!am_daemon && argc == 1)) {
			usage(FERROR);
			exit_cleanup(RERR_SYNTAX);
		}
		if (strcmp(files_from, "-") == 0) {
			filesfrom_fd = 0;
			if (am_server)
				filesfrom_host = ""; /* reading from socket */
		} else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
			if (am_server) {
				snprintf(err_buf, sizeof err_buf,
					"The --files-from sent to the server cannot specify a host.\n");
				return 0;
			}
			files_from = p;
			filesfrom_host = h;
			if (strcmp(files_from, "-") == 0) {
				snprintf(err_buf, sizeof err_buf,
					"Invalid --files-from remote filename\n");
				return 0;
			}
		} else {
			if (sanitize_paths)
				files_from = sanitize_path(NULL, files_from, NULL, 0, SP_DEFAULT);
			if (daemon_filter_list.head) {
				char *dir;
				if (!*files_from)
					goto options_rejected;
				dir = files_from + (*files_from == '/' ? module_dirlen : 0);
				clean_fname(dir, CFN_COLLAPSE_DOT_DOT_DIRS);
				if (check_filter(&daemon_filter_list, FLOG, dir, 0) < 0)
					goto options_rejected;
			}
			filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
			if (filesfrom_fd < 0) {
				snprintf(err_buf, sizeof err_buf,
					"failed to open files-from file %s: %s\n",
					files_from, strerror(errno));
				return 0;
			}
		}
	}

	am_starting_up = 0;

	return 1;

  options_rejected:
	snprintf(err_buf, sizeof err_buf,
		"Your options have been rejected by the server.\n");
	return 0;
}


/**
 * Construct a filtered list of options to pass through from the
 * client to the server.
 *
 * This involves setting options that will tell the server how to
 * behave, and also filtering out options that are processed only
 * locally.
 **/
void server_options(char **args, int *argc_p)
{
	static char argstr[64];
	int ac = *argc_p;
	char *arg;
	int i, x;

	/* This should always remain first on the server's command-line. */
	args[ac++] = "--server";

	if (daemon_over_rsh > 0) {
		args[ac++] = "--daemon";
		*argc_p = ac;
		/* if we're passing --daemon, we're done */
		return;
	}

	if (!am_sender)
		args[ac++] = "--sender";

	x = 1;
	argstr[0] = '-';

	if (protect_args)
		argstr[x++] = 's';

	for (i = 0; i < verbose; i++)
		argstr[x++] = 'v';

	/* the -q option is intentionally left out */
	if (make_backups)
		argstr[x++] = 'b';
	if (update_only)
		argstr[x++] = 'u';
	if (!do_xfers) /* Note: NOT "dry_run"! */
		argstr[x++] = 'n';
	if (preserve_links)
		argstr[x++] = 'l';
	if ((xfer_dirs >= 2 && xfer_dirs < 4)
	 || (xfer_dirs && !recurse && (list_only || (delete_mode && am_sender))))
		argstr[x++] = 'd';
	if (am_sender) {
		if (keep_dirlinks)
			argstr[x++] = 'K';
		if (prune_empty_dirs)
			argstr[x++] = 'm';
		if (omit_dir_times)
			argstr[x++] = 'O';
	} else {
		if (copy_links)
			argstr[x++] = 'L';
		if (copy_dirlinks)
			argstr[x++] = 'k';
	}

	if (whole_file > 0)
		argstr[x++] = 'W';
	/* We don't need to send --no-whole-file, because it's the
	 * default for remote transfers, and in any case old versions
	 * of rsync will not understand it. */

	if (preserve_hard_links) {
		argstr[x++] = 'H';
		if (preserve_hard_links > 1)
			argstr[x++] = 'H';
	}
	if (preserve_uid)
		argstr[x++] = 'o';
	if (preserve_gid)
		argstr[x++] = 'g';
	if (preserve_devices) /* ignore preserve_specials here */
		argstr[x++] = 'D';
	if (preserve_times)
		argstr[x++] = 't';
	if (preserve_perms)
		argstr[x++] = 'p';
	else if (preserve_executability && am_sender)
		argstr[x++] = 'E';
#ifdef SUPPORT_ACLS
	if (preserve_acls)
		argstr[x++] = 'A';
#endif
#ifdef SUPPORT_XATTRS
	if (preserve_xattrs) {
		argstr[x++] = 'X';
		if (preserve_xattrs > 1)
			argstr[x++] = 'X';
	}
#endif
	if (recurse)
		argstr[x++] = 'r';
	if (always_checksum)
		argstr[x++] = 'c';
	if (cvs_exclude)
		argstr[x++] = 'C';
	if (ignore_times)
		argstr[x++] = 'I';
	if (relative_paths)
		argstr[x++] = 'R';
	if (one_file_system) {
		argstr[x++] = 'x';
		if (one_file_system > 1)
			argstr[x++] = 'x';
	}
	if (sparse_files)
		argstr[x++] = 'S';
	if (do_compression)
		argstr[x++] = 'z';

	set_allow_inc_recurse();

	/* Checking the pre-negotiated value allows --protocol=29 override. */
	if (protocol_version >= 30) {
		/* We make use of the -e option to let the server know about
		 * any pre-release protocol version && some behavior flags. */
		argstr[x++] = 'e';
#if SUBPROTOCOL_VERSION != 0
		if (protocol_version == PROTOCOL_VERSION) {
			x += snprintf(argstr+x, sizeof argstr - x,
				      "%d.%d",
				      PROTOCOL_VERSION, SUBPROTOCOL_VERSION);
		} else
#endif
			argstr[x++] = '.';
		if (allow_inc_recurse)
			argstr[x++] = 'i';
#if defined HAVE_LUTIMES && defined HAVE_UTIMES
		argstr[x++] = 'L';
#endif
#ifdef ICONV_OPTION
		argstr[x++] = 's';
#endif
	}

	if (x >= (int)sizeof argstr) { /* Not possible... */
		rprintf(FERROR, "argstr overflow in server_options().\n");
		exit_cleanup(RERR_MALLOC);
	}

	argstr[x] = '\0';

	if (x > 1)
		args[ac++] = argstr;

#ifdef ICONV_OPTION
	if (iconv_opt) {
		char *set = strchr(iconv_opt, ',');
		if (set)
			set++;
		else
			set = iconv_opt;
		if (asprintf(&arg, "--iconv=%s", set) < 0)
			goto oom;
		args[ac++] = arg;
	}
#endif

	if (protect_args && !local_server) /* unprotected args stop here */
		args[ac++] = NULL;

	if (list_only > 1)
		args[ac++] = "--list-only";

	/* This makes sure that the remote rsync can handle deleting with -d
	 * sans -r because the --no-r option was added at the same time. */
	if (xfer_dirs && !recurse && delete_mode && am_sender)
		args[ac++] = "--no-r";

	if (do_compression && def_compress_level != Z_DEFAULT_COMPRESSION) {
		if (asprintf(&arg, "--compress-level=%d", def_compress_level) < 0)
			goto oom;
		args[ac++] = arg;
	}

	if (preserve_devices) {
		/* Note: sending "--devices" would not be backward-compatible. */
		if (!preserve_specials)
			args[ac++] = "--no-specials"; /* -D is already set. */
	} else if (preserve_specials)
		args[ac++] = "--specials";

	/* The server side doesn't use our log-format, but in certain
	 * circumstances they need to know a little about the option. */
	if (stdout_format && am_sender) {
		/* Use --log-format, not --out-format, for compatibility. */
		if (stdout_format_has_i > 1)
			args[ac++] = "--log-format=%i%I";
		else if (stdout_format_has_i)
			args[ac++] = "--log-format=%i";
		else if (stdout_format_has_o_or_i)
			ar