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Commit	Line	Data
	1	/* -- c-file-style: "linux" --
	2
	3	Copyright (C) 1998-2001 by Andrew Tridgell <tridge@samba.org>
	4	Copyright (C) 2000-2001 by Martin Pool <mbp@samba.org>
	5
	6	This program is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2 of the License, or
	9	(at your option) any later version.
	10
	11	This program is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with this program; if not, write to the Free Software
	18	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	19	*/
	20
	21	#include "rsync.h"
	22	#include "popt.h"
	23
	24	int make_backups = 0;
	25	int whole_file = 0;
	26	int copy_links = 0;
	27	int preserve_links = 0;
	28	int preserve_hard_links = 0;
	29	int preserve_perms = 0;
	30	int preserve_devices = 0;
	31	int preserve_uid = 0;
	32	int preserve_gid = 0;
	33	int preserve_times = 0;
	34	int update_only = 0;
	35	int cvs_exclude = 0;
	36	int dry_run=0;
	37	int local_server=0;
	38	int ignore_times=0;
	39	int delete_mode=0;
	40	int delete_excluded=0;
	41	int one_file_system=0;
	42	int remote_version=0;
	43	int sparse_files=0;
	44	int do_compression=0;
	45	int am_root=0;
	46	int orig_umask=0;
	47	int relative_paths=0;
	48	int numeric_ids = 0;
	49	int force_delete = 0;
	50	int io_timeout = 0;
	51	int io_error = 0;
	52	int read_only = 0;
	53	int module_id = -1;
	54	int am_server = 0;
	55	int am_sender=0;
	56	int recurse = 0;
	57	int am_daemon=0;
	58	int do_stats=0;
	59	int do_progress=0;
	60	int keep_partial=0;
	61	int safe_symlinks=0;
	62	int copy_unsafe_links=0;
	63	int block_size=BLOCK_SIZE;
	64	int size_only=0;
	65	int bwlimit=0;
	66	int delete_after=0;
	67	int only_existing=0;
	68	int max_delete=0;
	69	int ignore_errors=0;
	70	#ifdef _WIN32
	71	int modify_window=2;
	72	#else
	73	int modify_window=0;
	74	#endif
	75	int blocking_io=0;
	76
	77	int read_batch=0; /* dw */
	78	int write_batch=0; /* dw */
	79
	80	char *backup_suffix = BACKUP_SUFFIX;
	81	char *tmpdir = NULL;
	82	char *compare_dest = NULL;
	83	char *config_file = RSYNCD_CONF;
	84	char *shell_cmd = NULL;
	85	char *log_format = NULL;
	86	char *password_file = NULL;
	87	char *rsync_path = RSYNC_PATH;
	88	char *backup_dir = NULL;
	89	int rsync_port = RSYNC_PORT;
	90
	91	int verbose = 0;
	92	int quiet = 0;
	93	int always_checksum = 0;
	94	int list_only = 0;
	95
	96	char *batch_ext = NULL;
	97
	98	static int modify_window_set;
	99
	100
	101	struct in_addr socket_address = {INADDR_ANY};
	102
	103
	104	static void print_rsync_version(int f)
	105	{
	106	char const *got_socketpair = "no ";
	107	char const *hardlinks = "no ";
	108	char const *links = "no ";
	109
	110	#ifdef HAVE_SOCKETPAIR
	111	got_socketpair = "";
	112	#endif
	113
	114	#if SUPPORT_HARD_LINKS
	115	hardlinks = "";
	116	#endif
	117
	118	#if SUPPORT_LINKS
	119	links = "";
	120	#endif
	121
	122	rprintf(f, "%s version %s protocol version %d\n",
	123	RSYNC_NAME, VERSION, PROTOCOL_VERSION);
	124	rprintf(f,
	125	"Copyright (C) 1996-2001 by Andrew Tridgell, Paul Mackerras and others\n");
	126	rprintf(f, "<http://rsync.samba.org/>\n");
	127	rprintf(f, "Capabilities: %d-bit files, %ssocketpairs, "
	128	"%shard links, %ssymlinks, batchfiles\n\n",
	129	(int) (sizeof(int64) * 8),
	130	got_socketpair,
	131	hardlinks, links);
	132
	133	#ifdef NO_INT64
	134	rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
	135	#endif
	136	}
	137
	138
	139	void usage(enum logcode F)
	140	{
	141	print_rsync_version(F);
	142
	143	rprintf(F,"rsync is a file transfer program capable of efficient remote update\nvia a fast differencing algorithm.\n\n");
	144
	145	rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
	146	rprintf(F," or rsync [OPTION]... [USER@]HOST:SRC DEST\n");
	147	rprintf(F," or rsync [OPTION]... SRC [SRC]... DEST\n");
	148	rprintf(F," or rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
	149	rprintf(F," or rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
	150	rprintf(F," or rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
	151	rprintf(F,"SRC on single-colon remote HOST will be expanded by remote shell\n");
	152	rprintf(F,"SRC on server remote HOST may contain shell wildcards or multiple\n");
	153	rprintf(F," sources separated by space as long as they have same top-level\n");
	154	rprintf(F,"\nOptions\n");
	155	rprintf(F," -v, --verbose increase verbosity\n");
	156	rprintf(F," -q, --quiet decrease verbosity\n");
	157	rprintf(F," -c, --checksum always checksum\n");
	158	rprintf(F," -a, --archive archive mode\n");
	159	rprintf(F," -r, --recursive recurse into directories\n");
	160	rprintf(F," -R, --relative use relative path names\n");
	161	rprintf(F," -b, --backup make backups (default %s suffix)\n",BACKUP_SUFFIX);
	162	rprintf(F," --backup-dir make backups into this directory\n");
	163	rprintf(F," --suffix=SUFFIX override backup suffix\n");
	164	rprintf(F," -u, --update update only (don't overwrite newer files)\n");
	165	rprintf(F," -l, --links preserve soft links\n");
	166	rprintf(F," -L, --copy-links treat soft links like regular files\n");
	167	rprintf(F," --copy-unsafe-links copy links outside the source tree\n");
	168	rprintf(F," --safe-links ignore links outside the destination tree\n");
	169	rprintf(F," -H, --hard-links preserve hard links\n");
	170	rprintf(F," -p, --perms preserve permissions\n");
	171	rprintf(F," -o, --owner preserve owner (root only)\n");
	172	rprintf(F," -g, --group preserve group\n");
	173	rprintf(F," -D, --devices preserve devices (root only)\n");
	174	rprintf(F," -t, --times preserve times\n");
	175	rprintf(F," -S, --sparse handle sparse files efficiently\n");
	176	rprintf(F," -n, --dry-run show what would have been transferred\n");
	177	rprintf(F," -W, --whole-file copy whole files, no incremental checks\n");
	178	rprintf(F," -x, --one-file-system don't cross filesystem boundaries\n");
	179	rprintf(F," -B, --block-size=SIZE checksum blocking size (default %d)\n",BLOCK_SIZE);
	180	rprintf(F," -e, --rsh=COMMAND specify rsh replacement\n");
	181	rprintf(F," --rsync-path=PATH specify path to rsync on the remote machine\n");
	182	rprintf(F," -C, --cvs-exclude auto ignore files in the same way CVS does\n");
	183	rprintf(F," --existing only update files that already exist\n");
	184	rprintf(F," --delete delete files that don't exist on the sending side\n");
	185	rprintf(F," --delete-excluded also delete excluded files on the receiving side\n");
	186	rprintf(F," --delete-after delete after transferring, not before\n");
	187	rprintf(F," --ignore-errors delete even if there are IO errors\n");
	188	rprintf(F," --max-delete=NUM don't delete more than NUM files\n");
	189	rprintf(F," --partial keep partially transferred files\n");
	190	rprintf(F," --force force deletion of directories even if not empty\n");
	191	rprintf(F," --numeric-ids don't map uid/gid values by user/group name\n");
	192	rprintf(F," --timeout=TIME set IO timeout in seconds\n");
	193	rprintf(F," -I, --ignore-times don't exclude files that match length and time\n");
	194	rprintf(F," --size-only only use file size when determining if a file should be transferred\n");
	195	rprintf(F," --modify-window=NUM Timestamp window (seconds) for file match (default=%d)\n",modify_window);
	196	rprintf(F," -T --temp-dir=DIR create temporary files in directory DIR\n");
	197	rprintf(F," --compare-dest=DIR also compare destination files relative to DIR\n");
	198	rprintf(F," -P equivalent to --partial --progress\n");
	199	rprintf(F," -z, --compress compress file data\n");
	200	rprintf(F," --exclude=PATTERN exclude files matching PATTERN\n");
	201	rprintf(F," --exclude-from=FILE exclude patterns listed in FILE\n");
	202	rprintf(F," --include=PATTERN don't exclude files matching PATTERN\n");
	203	rprintf(F," --include-from=FILE don't exclude patterns listed in FILE\n");
	204	rprintf(F," --version print version number\n");
	205	rprintf(F," --daemon run as a rsync daemon\n");
	206	rprintf(F," --address bind to the specified address\n");
	207	rprintf(F," --config=FILE specify alternate rsyncd.conf file\n");
	208	rprintf(F," --port=PORT specify alternate rsyncd port number\n");
	209	rprintf(F," --blocking-io use blocking IO for the remote shell\n");
	210	rprintf(F," --stats give some file transfer stats\n");
	211	rprintf(F," --progress show progress during transfer\n");
	212	rprintf(F," --log-format=FORMAT log file transfers using specified format\n");
	213	rprintf(F," --password-file=FILE get password from FILE\n");
	214	rprintf(F," --bwlimit=KBPS limit I/O bandwidth, KBytes per second\n");
	215	rprintf(F," -f --read-batch=EXT read batch file\n");
	216	rprintf(F," -F --write-batch write batch file\n");
	217	rprintf(F," -h, --help show this help screen\n");
	218
	219	rprintf(F,"\n");
	220
	221	rprintf(F,"\nPlease see the rsync(1) and rsyncd.conf(5) man pages for full documentation\n");
	222	rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
	223	}
	224
	225	enum {OPT_VERSION = 1000, OPT_SUFFIX, OPT_SENDER, OPT_SERVER, OPT_EXCLUDE,
	226	OPT_EXCLUDE_FROM, OPT_DELETE, OPT_DELETE_EXCLUDED, OPT_NUMERIC_IDS,
	227	OPT_RSYNC_PATH, OPT_FORCE, OPT_TIMEOUT, OPT_DAEMON, OPT_CONFIG, OPT_PORT,
	228	OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_STATS, OPT_PARTIAL, OPT_PROGRESS,
	229	OPT_COPY_UNSAFE_LINKS, OPT_SAFE_LINKS, OPT_COMPARE_DEST,
	230	OPT_LOG_FORMAT, OPT_PASSWORD_FILE, OPT_SIZE_ONLY, OPT_ADDRESS,
	231	OPT_DELETE_AFTER, OPT_EXISTING, OPT_MAX_DELETE, OPT_BACKUP_DIR,
	232	OPT_IGNORE_ERRORS, OPT_BWLIMIT, OPT_BLOCKING_IO,
	233	OPT_MODIFY_WINDOW};
	234
	235	static struct poptOption long_options[] = {
	236	/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
	237	{"version", 0, POPT_ARG_NONE, 0, OPT_VERSION},
	238	{"suffix", 0, POPT_ARG_STRING, &backup_suffix},
	239	{"rsync-path", 0, POPT_ARG_STRING, &rsync_path},
	240	{"password-file", 0, POPT_ARG_STRING, &password_file},
	241	{"ignore-times", 'I', POPT_ARG_NONE, &ignore_times},
	242	{"size-only", 0, POPT_ARG_NONE, &size_only},
	243	{"modify-window", 0, POPT_ARG_INT, &modify_window, OPT_MODIFY_WINDOW},
	244	{"one-file-system", 'x', POPT_ARG_NONE, &one_file_system},
	245	{"delete", 0, POPT_ARG_NONE, &delete_mode},
	246	{"existing", 0, POPT_ARG_NONE, &only_existing},
	247	{"delete-after", 0, POPT_ARG_NONE, &delete_after},
	248	{"delete-excluded", 0, POPT_ARG_NONE, 0, OPT_DELETE_EXCLUDED},
	249	{"force", 0, POPT_ARG_NONE, &force_delete},
	250	{"numeric-ids", 0, POPT_ARG_NONE, &numeric_ids},
	251	{"exclude", 0, POPT_ARG_STRING, 0, OPT_EXCLUDE},
	252	{"include", 0, POPT_ARG_STRING, 0, OPT_INCLUDE},
	253	{"exclude-from", 0, POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM},
	254	{"include-from", 0, POPT_ARG_STRING, 0, OPT_INCLUDE_FROM},
	255	{"safe-links", 0, POPT_ARG_NONE, &safe_symlinks},
	256	{"help", 'h', POPT_ARG_NONE, 0, 'h'},
	257	{"backup", 'b', POPT_ARG_NONE, &make_backups},
	258	{"dry-run", 'n', POPT_ARG_NONE, &dry_run},
	259	{"sparse", 'S', POPT_ARG_NONE, &sparse_files},
	260	{"cvs-exclude", 'C', POPT_ARG_NONE, &cvs_exclude},
	261	{"update", 'u', POPT_ARG_NONE, &update_only},
	262	{"links", 'l', POPT_ARG_NONE, &preserve_links},
	263	{"copy-links", 'L', POPT_ARG_NONE, &copy_links},
	264	{"whole", 'W', POPT_ARG_NONE, &whole_file},
	265	{"copy-unsafe-links", 0, POPT_ARG_NONE, &copy_unsafe_links},
	266	{"perms", 'p', POPT_ARG_NONE, &preserve_perms},
	267	{"owner", 'o', POPT_ARG_NONE, &preserve_uid},
	268	{"group", 'g', POPT_ARG_NONE, &preserve_gid},
	269	{"devices", 'D', POPT_ARG_NONE, &preserve_devices},
	270	{"times", 't', POPT_ARG_NONE, &preserve_times},
	271	{"checksum", 'c', POPT_ARG_NONE, &always_checksum},
	272	{"verbose", 'v', POPT_ARG_NONE, 0, 'v'},
	273	{"quiet", 'q', POPT_ARG_NONE, 0, 'q'},
	274	{"archive", 'a', POPT_ARG_NONE, 0, 'a'},
	275	{"server", 0, POPT_ARG_NONE, &am_server},
	276	{"sender", 0, POPT_ARG_NONE, 0, OPT_SENDER},
	277	{"recurse", 'r', POPT_ARG_NONE, &recurse},
	278	{"relative", 'R', POPT_ARG_NONE, &relative_paths},
	279	{"rsh", 'e', POPT_ARG_STRING, &shell_cmd},
	280	{"block-size", 'B', POPT_ARG_INT, &block_size},
	281	{"max-delete", 0, POPT_ARG_INT, &max_delete},
	282	{"timeout", 0, POPT_ARG_INT, &io_timeout},
	283	{"temp-dir", 'T', POPT_ARG_STRING, &tmpdir},
	284	{"compare-dest", 0, POPT_ARG_NONE, &compare_dest},
	285	/* TODO: Should this take an optional int giving the compression level? */
	286	{"compress", 'z', POPT_ARG_NONE, &do_compression},
	287	{"daemon", 0, POPT_ARG_NONE, &am_daemon},
	288	{"stats", 0, POPT_ARG_NONE, &do_stats},
	289	{"progress", 0, POPT_ARG_NONE, &do_progress},
	290	{"partial", 0, POPT_ARG_NONE, &keep_partial},
	291	{"ignore-errors", 0, POPT_ARG_NONE, &ignore_errors},
	292	{"blocking-io", 0, POPT_ARG_NONE, &blocking_io},
	293	{0, 'P', POPT_ARG_NONE, 0, 'P'},
	294	{"config", 0, POPT_ARG_STRING, &config_file},
	295	{"port", 0, POPT_ARG_INT, &rsync_port},
	296	{"log-format", 0, POPT_ARG_STRING, &log_format},
	297	{"bwlimit", 0, POPT_ARG_INT, &bwlimit},
	298	{"address", 0, POPT_ARG_STRING, 0, OPT_ADDRESS},
	299	{"backup-dir", 0, POPT_ARG_STRING, &backup_dir},
	300	{"hard-links", 'H', POPT_ARG_NONE, &preserve_hard_links},
	301	{"read-batch", 'f', POPT_ARG_STRING, &batch_ext, 'f'},
	302	{"write-batch", 'F', POPT_ARG_NONE, &write_batch, 0},
	303	{0,0,0,0}
	304	};
	305
	306	static char err_buf[100];
	307
	308
	309	void option_error(void)
	310	{
	311	if (err_buf[0]) {
	312	rprintf(FLOG, "%s", err_buf);
	313	rprintf(FERROR, "%s: %s", RSYNC_NAME, err_buf);
	314	} else {
	315	rprintf(FLOG,"Error parsing options - unsupported option?\n");
	316	rprintf(FERROR,"Error parsing options - unsupported option?\n");
	317	}
	318	}
	319
	320	/* check to see if we should refuse this option */
	321	static int check_refuse_options(char *ref, int opt)
	322	{
	323	int i, len;
	324	char *p;
	325	const char *name;
	326
	327	for (i=0; long_options[i].longName; i++) {
	328	if (long_options[i].val == opt) break;
	329	}
	330
	331	if (!long_options[i].longName) return 0;
	332
	333	name = long_options[i].longName;
	334	len = strlen(name);
	335
	336	while ((p = strstr(ref,name))) {
	337	if ((p==ref \|\| p[-1]==' ') &&
	338	(p[len] == ' ' \|\| p[len] == 0)) {
	339	snprintf(err_buf,sizeof(err_buf),
	340	"The '%s' option is not supported by this server\n", name);
	341	return 1;
	342	}
	343	ref += len;
	344	}
	345	return 0;
	346	}
	347
	348
	349	static int count_args(char const **argv)
	350	{
	351	int i = 0;
	352
	353	while (argv[i] != NULL)
	354	i++;
	355
	356	return i;
	357	}
	358
	359
	360	/* Process command line arguments. Called on both local and remote.
	361	* Returns if all options are OK, otherwise fills in err_buf and
	362	* returns 0. */
	363	int parse_arguments(int argc, const char **argv, int frommain)
	364	{
	365	int opt;
	366	char *ref = lp_refuse_options(module_id);
	367	poptContext pc;
	368
	369	/* TODO: Call poptReadDefaultConfig; handle errors. */
	370
	371	/* The context leaks in case of an error, but if there's a
	372	* problem we always exit anyhow. */
	373	pc = poptGetContext(RSYNC_NAME, argc, argv, long_options, 0);
	374
	375	while ((opt = poptGetNextOpt(pc)) != -1) {
	376	if (ref) {
	377	if (check_refuse_options(ref, opt)) return 0;
	378	}
	379
	380	/* most options are handled automatically by popt;
	381	* only special cases are returned and listed here. */
	382
	383	switch (opt) {
	384	case OPT_VERSION:
	385	print_rsync_version(FINFO);
	386	exit_cleanup(0);
	387
	388	case OPT_MODIFY_WINDOW:
	389	/* The value has already been set by popt, but
	390	* we need to remember that we're using a
	391	* non-default setting. */
	392	modify_window_set = 1;
	393	break;
	394
	395	case OPT_DELETE_EXCLUDED:
	396	delete_excluded = 1;
	397	delete_mode = 1;
	398	break;
	399
	400	case OPT_EXCLUDE:
	401	add_exclude(poptGetOptArg(pc), 0);
	402	break;
	403
	404	case OPT_INCLUDE:
	405	add_exclude(poptGetOptArg(pc), 1);
	406	break;
	407
	408	case OPT_EXCLUDE_FROM:
	409	add_exclude_file(poptGetOptArg(pc), 1, 0);
	410	break;
	411
	412	case OPT_INCLUDE_FROM:
	413	add_exclude_file(poptGetOptArg(pc), 1, 1);
	414	break;
	415
	416	case 'h':
	417	usage(FINFO);
	418	exit_cleanup(0);
	419
	420	case 'H':
	421	#if SUPPORT_HARD_LINKS
	422	preserve_hard_links=1;
	423	#else
	424	/* FIXME: Don't say "server" if this is
	425	* happening on the client. */
	426	/* FIXME: Why do we have the duplicated
	427	* rprintf? Everybody who gets this message
	428	* ought to send it to the client and also to
	429	* the logs. */
	430	snprintf(err_buf,sizeof(err_buf),
	431	"hard links are not supported on this %s\n",
	432	am_server ? "server" : "client");
	433	rprintf(FERROR,"ERROR: hard links not supported on this platform\n");
	434	return 0;
	435	#endif /* SUPPORT_HARD_LINKS */
	436	break;
	437
	438	case 'v':
	439	verbose++;
	440	break;
	441
	442	case 'q':
	443	if (frommain) quiet++;
	444	break;
	445
	446	case 'a':
	447	recurse=1;
	448	#if SUPPORT_LINKS
	449	preserve_links=1;
	450	#endif
	451	preserve_perms=1;
	452	preserve_times=1;
	453	preserve_gid=1;
	454	preserve_uid=1;
	455	preserve_devices=1;
	456	break;
	457
	458	case OPT_SENDER:
	459	if (!am_server) {
	460	usage(FERROR);
	461	exit_cleanup(RERR_SYNTAX);
	462	}
	463	am_sender = 1;
	464	break;
	465
	466	case 'P':
	467	do_progress = 1;
	468	keep_partial = 1;
	469	break;
	470
	471	case OPT_ADDRESS:
	472	{
	473	struct in_addr *ia;
	474	if ((ia = ip_address (poptGetOptArg (pc)))) {
	475	socket_address = *ia;
	476	}
	477	}
	478	break;
	479
	480	case 'f':
	481	/* The filename is stored for us by popt */
	482	read_batch = 1;
	483	break;
	484
	485	default:
	486	/* FIXME: If --daemon is specified, then errors for later
	487	* parameters seem to disappear. */
	488	snprintf(err_buf, sizeof(err_buf),
	489	"%s%s: %s\n",
	490	am_server ? "on remote machine: " : "",
	491	poptBadOption(pc, POPT_BADOPTION_NOALIAS),
	492	poptStrerror(opt));
	493	return 0;
	494	}
	495	}
	496
	497	*argv = poptGetArgs(pc);
	498	if (*argv)
	499	argc = count_args(argv);
	500	else
	501	*argc = 0;
	502
	503	return 1;
	504	}
	505
	506
	507	/* Construct a filtered list of options to pass through from the
	508	* client to the server */
	509	void server_options(char *args,int argc)
	510	{
	511	int ac = *argc;
	512	static char argstr[50];
	513	static char bsize[30];
	514	static char iotime[30];
	515	static char mdelete[30];
	516	static char mwindow[30];
	517	static char bw[50];
	518	static char fext[20]; /* dw */
	519
	520	int i, x;
	521
	522	args[ac++] = "--server";
	523
	524	if (!am_sender)
	525	args[ac++] = "--sender";
	526
	527	x = 1;
	528	argstr[0] = '-';
	529	for (i=0;i<verbose;i++)
	530	argstr[x++] = 'v';
	531
	532	/* the -q option is intentionally left out */
	533	if (make_backups)
	534	argstr[x++] = 'b';
	535	if (update_only)
	536	argstr[x++] = 'u';
	537	if (dry_run)
	538	argstr[x++] = 'n';
	539	if (preserve_links)
	540	argstr[x++] = 'l';
	541	if (copy_links)
	542	argstr[x++] = 'L';
	543	if (whole_file)
	544	argstr[x++] = 'W';
	545	if (preserve_hard_links)
	546	argstr[x++] = 'H';
	547	if (preserve_uid)
	548	argstr[x++] = 'o';
	549	if (preserve_gid)
	550	argstr[x++] = 'g';
	551	if (preserve_devices)
	552	argstr[x++] = 'D';
	553	if (preserve_times)
	554	argstr[x++] = 't';
	555	if (preserve_perms)
	556	argstr[x++] = 'p';
	557	if (recurse)
	558	argstr[x++] = 'r';
	559	if (always_checksum)
	560	argstr[x++] = 'c';
	561	if (cvs_exclude)
	562	argstr[x++] = 'C';
	563	if (ignore_times)
	564	argstr[x++] = 'I';
	565	if (relative_paths)
	566	argstr[x++] = 'R';
	567	if (one_file_system)
	568	argstr[x++] = 'x';
	569	if (sparse_files)
	570	argstr[x++] = 'S';
	571	if (do_compression)
	572	argstr[x++] = 'z';
	573	if (write_batch)
	574	argstr[x++] = 'F'; /* dw */
	575
	576	/* this is a complete hack - blame Rusty
	577
	578	this is a hack to make the list_only (remote file list)
	579	more useful */
	580	if (list_only && !recurse)
	581	argstr[x++] = 'r';
	582
	583	argstr[x] = 0;
	584
	585	if (x != 1) args[ac++] = argstr;
	586
	587	if (block_size != BLOCK_SIZE) {
	588	snprintf(bsize,sizeof(bsize),"-B%d",block_size);
	589	args[ac++] = bsize;
	590	}
	591
	592	if (max_delete && am_sender) {
	593	snprintf(mdelete,sizeof(mdelete),"--max-delete=%d",max_delete);
	594	args[ac++] = mdelete;
	595	}
	596
	597	if (batch_ext != NULL) {
	598	sprintf(fext,"-f%s",batch_ext);
	599	args[ac++] = fext;
	600	}
	601
	602	if (io_timeout) {
	603	snprintf(iotime,sizeof(iotime),"--timeout=%d",io_timeout);
	604	args[ac++] = iotime;
	605	}
	606
	607	if (bwlimit) {
	608	snprintf(bw,sizeof(bw),"--bwlimit=%d",bwlimit);
	609	args[ac++] = bw;
	610	}
	611
	612	if (strcmp(backup_suffix, BACKUP_SUFFIX)) {
	613	args[ac++] = "--suffix";
	614	args[ac++] = backup_suffix;
	615	}
	616
	617	if (delete_mode && !delete_excluded)
	618	args[ac++] = "--delete";
	619
	620	if (delete_excluded)
	621	args[ac++] = "--delete-excluded";
	622
	623	if (size_only)
	624	args[ac++] = "--size-only";
	625
	626	if (modify_window_set) {
	627	snprintf(mwindow,sizeof(mwindow),"--modify-window=%d",
	628	modify_window);
	629	args[ac++] = mwindow;
	630	}
	631
	632	if (keep_partial)
	633	args[ac++] = "--partial";
	634
	635	if (force_delete)
	636	args[ac++] = "--force";
	637
	638	if (delete_after)
	639	args[ac++] = "--delete-after";
	640
	641	if (ignore_errors)
	642	args[ac++] = "--ignore-errors";
	643
	644	if (copy_unsafe_links)
	645	args[ac++] = "--copy-unsafe-links";
	646
	647	if (safe_symlinks)
	648	args[ac++] = "--safe-links";
	649
	650	if (numeric_ids)
	651	args[ac++] = "--numeric-ids";
	652
	653	if (only_existing && am_sender)
	654	args[ac++] = "--existing";
	655
	656	if (tmpdir) {
	657	args[ac++] = "--temp-dir";
	658	args[ac++] = tmpdir;
	659	}
	660
	661	if (backup_dir && am_sender) {
	662	/* only the receiver needs this option, if we are the sender
	663	* then we need to send it to the receiver.
	664	*/
	665	args[ac++] = "--backup-dir";
	666	args[ac++] = backup_dir;
	667	}
	668
	669	if (compare_dest && am_sender) {
	670	/* the server only needs this option if it is not the sender,
	671	* and it may be an older version that doesn't know this
	672	* option, so don't send it if client is the sender.
	673	*/
	674	args[ac++] = "--compare-dest";
	675	args[ac++] = compare_dest;
	676	}
	677
	678
	679	*argc = ac;
	680	}
	681