2 * The startup routines, including main(), for rsync.
4 * Copyright (C) 1996-2001 Andrew Tridgell <tridge@samba.org>
5 * Copyright (C) 1996 Paul Mackerras
6 * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
7 * Copyright (C) 2003-2020 Wayne Davison
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, visit the http://fsf.org website.
27 #if defined CONFIG_LOCALE && defined HAVE_LOCALE_H
32 #include <floss.h(floss_execlp)>
37 extern int io_timeout;
42 extern int inc_recurse;
43 extern int blocking_io;
44 extern int always_checksum;
45 extern int remove_source_files;
46 extern int output_needs_newline;
47 extern int called_from_signal_handler;
48 extern int need_messages_from_generator;
49 extern int kluge_around_eof;
50 extern int got_xfer_error;
51 extern int msgs2stderr;
54 extern int copy_links;
55 extern int copy_dirlinks;
56 extern int copy_unsafe_links;
57 extern int keep_dirlinks;
58 extern int preserve_hard_links;
59 extern int protocol_version;
60 extern int mkpath_dest_arg;
61 extern int file_total;
64 extern int protect_args;
65 extern int relative_paths;
66 extern int sanitize_paths;
67 extern int curr_dir_depth;
68 extern int curr_dir_len;
70 extern int rsync_port;
71 extern int whole_file;
72 extern int read_batch;
73 extern int write_batch;
76 extern int sock_f_out;
77 extern int filesfrom_fd;
78 extern int connect_timeout;
79 extern int send_msgs_to_gen;
80 extern dev_t filesystem_dev;
81 extern pid_t cleanup_child_pid;
82 extern size_t bwlimit_writemax;
83 extern unsigned int module_dirlen;
84 extern BOOL flist_receiving_enabled;
85 extern BOOL want_progress_now;
86 extern BOOL shutting_down;
87 extern int backup_dir_len;
88 extern int basis_dir_cnt;
89 extern int default_af_hint;
90 extern struct stats stats;
91 extern char *stdout_format;
92 extern char *logfile_format;
93 extern char *filesfrom_host;
94 extern char *partial_dir;
95 extern char *rsync_path;
96 extern char *shell_cmd;
97 extern char *password_file;
98 extern char *backup_dir;
100 extern char curr_dir[MAXPATHLEN];
101 extern char backup_dir_buf[MAXPATHLEN];
102 extern char *basis_dir[MAX_BASIS_DIRS+1];
103 extern struct file_list *first_flist;
104 extern filter_rule_list daemon_filter_list;
108 int am_receiver = 0; /* Only set to 1 after the receiver/generator fork. */
109 int am_generator = 0; /* Only set to 1 after the receiver/generator fork. */
110 int local_server = 0;
111 int daemon_connection = 0; /* 0 = no daemon, 1 = daemon via remote shell, -1 = daemon via socket */
112 mode_t orig_umask = 0;
113 int batch_gen_fd = -1;
114 int sender_keeps_checksum = 0;
115 int raw_argc, cooked_argc;
116 char **raw_argv, **cooked_argv;
118 /* There's probably never more than at most 2 outstanding child processes,
119 * but set it higher, just in case. */
120 #define MAXCHILDPROCS 7
122 #ifdef HAVE_SIGACTION
123 # ifdef HAVE_SIGPROCMASK
124 # define SIGACTMASK(n,h) SIGACTION(n,h), sigaddset(&sigmask,(n))
126 # define SIGACTMASK(n,h) SIGACTION(n,h)
128 static struct sigaction sigact;
134 } pid_stat_table[MAXCHILDPROCS];
136 static time_t starttime, endtime;
137 static int64 total_read, total_written;
139 static void show_malloc_stats(void);
141 /* Works like waitpid(), but if we already harvested the child pid in our
142 * remember_children(), we succeed instead of returning an error. */
143 pid_t wait_process(pid_t pid, int *status_ptr, int flags)
148 waited_pid = waitpid(pid, status_ptr, flags);
149 } while (waited_pid == -1 && errno == EINTR);
151 if (waited_pid == -1 && errno == ECHILD) {
152 /* Status of requested child no longer available: check to
153 * see if it was processed by remember_children(). */
155 for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) {
156 if (pid == pid_stat_table[cnt].pid) {
157 *status_ptr = pid_stat_table[cnt].status;
158 pid_stat_table[cnt].pid = 0;
167 int shell_exec(const char *cmd)
169 char *shell = getenv("RSYNC_SHELL");
176 if ((pid = fork()) < 0)
180 execlp(shell, shell, "-c", cmd, NULL);
184 int ret = wait_process(pid, &status, 0);
185 return ret < 0 ? -1 : status;
188 /* Wait for a process to exit, calling io_flush while waiting. */
189 static void wait_process_with_flush(pid_t pid, int *exit_code_ptr)
194 while ((waited_pid = wait_process(pid, &status, WNOHANG)) == 0) {
196 io_flush(FULL_FLUSH);
199 /* TODO: If the child exited on a signal, then log an
200 * appropriate error message. Perhaps we should also accept a
201 * message describing the purpose of the child. Also indicate
202 * this to the caller so that they know something went wrong. */
203 if (waited_pid < 0) {
204 rsyserr(FERROR, errno, "waitpid");
205 *exit_code_ptr = RERR_WAITCHILD;
206 } else if (!WIFEXITED(status)) {
208 if (WCOREDUMP(status))
209 *exit_code_ptr = RERR_CRASHED;
212 if (WIFSIGNALED(status))
213 *exit_code_ptr = RERR_TERMINATED;
215 *exit_code_ptr = RERR_WAITCHILD;
217 *exit_code_ptr = WEXITSTATUS(status);
220 void write_del_stats(int f)
223 write_int(f, NDX_DEL_STATS);
225 write_ndx(f, NDX_DEL_STATS);
226 write_varint(f, stats.deleted_files - stats.deleted_dirs
227 - stats.deleted_symlinks - stats.deleted_devices
228 - stats.deleted_specials);
229 write_varint(f, stats.deleted_dirs);
230 write_varint(f, stats.deleted_symlinks);
231 write_varint(f, stats.deleted_devices);
232 write_varint(f, stats.deleted_specials);
235 void read_del_stats(int f)
237 stats.deleted_files = read_varint(f);
238 stats.deleted_files += stats.deleted_dirs = read_varint(f);
239 stats.deleted_files += stats.deleted_symlinks = read_varint(f);
240 stats.deleted_files += stats.deleted_devices = read_varint(f);
241 stats.deleted_files += stats.deleted_specials = read_varint(f);
244 static void become_copy_as_user()
253 if (DEBUG_GTE(CMD, 2))
254 rprintf(FINFO, "[%s] copy_as=%s\n", who_am_i(), copy_as);
256 if ((gname = strchr(copy_as, ':')) != NULL)
259 if (!user_to_uid(copy_as, &uid, True)) {
260 rprintf(FERROR, "Invalid copy-as user: %s\n", copy_as);
261 exit_cleanup(RERR_SYNTAX);
265 if (!group_to_gid(gname, &gid, True)) {
266 rprintf(FERROR, "Invalid copy-as group: %s\n", gname);
267 exit_cleanup(RERR_SYNTAX);
271 if ((pw = getpwuid(uid)) == NULL) {
272 rsyserr(FERROR, errno, "getpwuid failed");
273 exit_cleanup(RERR_SYNTAX);
278 if (setgid(gid) < 0) {
279 rsyserr(FERROR, errno, "setgid failed");
280 exit_cleanup(RERR_SYNTAX);
282 #ifdef HAVE_SETGROUPS
283 if (setgroups(1, &gid)) {
284 rsyserr(FERROR, errno, "setgroups failed");
285 exit_cleanup(RERR_SYNTAX);
288 #ifdef HAVE_INITGROUPS
289 if (!gname && initgroups(copy_as, gid) < 0) {
290 rsyserr(FERROR, errno, "initgroups failed");
291 exit_cleanup(RERR_SYNTAX);
300 rsyserr(FERROR, errno, "setuid failed");
301 exit_cleanup(RERR_SYNTAX);
306 am_root = (our_uid == ROOT_UID);
312 /* This function gets called from all 3 processes. We want the client side
313 * to actually output the text, but the sender is the only process that has
314 * all the stats we need. So, if we're a client sender, we do the report.
315 * If we're a server sender, we write the stats on the supplied fd. If
316 * we're the client receiver we read the stats from the supplied fd and do
317 * the report. All processes might also generate a set of debug stats, if
318 * the verbose level is high enough (this is the only thing that the
319 * generator process and the server receiver ever do here). */
320 static void handle_stats(int f)
322 endtime = time(NULL);
324 /* Cache two stats because the read/write code can change it. */
325 total_read = stats.total_read;
326 total_written = stats.total_written;
328 if (INFO_GTE(STATS, 3)) {
329 /* These come out from every process */
338 if (f == -1 || !am_sender)
344 write_varlong30(f, total_read, 3);
345 write_varlong30(f, total_written, 3);
346 write_varlong30(f, stats.total_size, 3);
347 if (protocol_version >= 29) {
348 write_varlong30(f, stats.flist_buildtime, 3);
349 write_varlong30(f, stats.flist_xfertime, 3);
355 /* this is the client */
357 if (f < 0 && !am_sender) /* e.g. when we got an empty file list. */
359 else if (!am_sender) {
360 /* Read the first two in opposite order because the meaning of
361 * read/write swaps when switching from sender to receiver. */
362 total_written = read_varlong30(f, 3);
363 total_read = read_varlong30(f, 3);
364 stats.total_size = read_varlong30(f, 3);
365 if (protocol_version >= 29) {
366 stats.flist_buildtime = read_varlong30(f, 3);
367 stats.flist_xfertime = read_varlong30(f, 3);
369 } else if (write_batch) {
370 /* The --read-batch process is going to be a client
371 * receiver, so we need to give it the stats. */
372 write_varlong30(batch_fd, total_read, 3);
373 write_varlong30(batch_fd, total_written, 3);
374 write_varlong30(batch_fd, stats.total_size, 3);
375 if (protocol_version >= 29) {
376 write_varlong30(batch_fd, stats.flist_buildtime, 3);
377 write_varlong30(batch_fd, stats.flist_xfertime, 3);
382 static void output_itemized_counts(const char *prefix, int *counts)
384 static char *labels[] = { "reg", "dir", "link", "dev", "special" };
385 char buf[1024], *pre = " (";
387 int total = counts[0];
389 counts[0] -= counts[1] + counts[2] + counts[3] + counts[4];
390 for (j = 0; j < 5; j++) {
392 len += snprintf(buf+len, sizeof buf - len - 2,
394 pre, labels[j], comma_num(counts[j]));
401 rprintf(FINFO, "%s: %s%s\n", prefix, comma_num(total), buf);
404 static const char *bytes_per_sec_human_dnum(void)
406 if (starttime == (time_t)-1 || endtime == (time_t)-1)
408 return human_dnum((total_written + total_read) / (0.5 + (endtime - starttime)), 2);
411 static void output_summary(void)
413 if (INFO_GTE(STATS, 2)) {
414 rprintf(FCLIENT, "\n");
415 output_itemized_counts("Number of files", &stats.num_files);
416 if (protocol_version >= 29)
417 output_itemized_counts("Number of created files", &stats.created_files);
418 if (protocol_version >= 31)
419 output_itemized_counts("Number of deleted files", &stats.deleted_files);
420 rprintf(FINFO,"Number of regular files transferred: %s\n",
421 comma_num(stats.xferred_files));
422 rprintf(FINFO,"Total file size: %s bytes\n",
423 human_num(stats.total_size));
424 rprintf(FINFO,"Total transferred file size: %s bytes\n",
425 human_num(stats.total_transferred_size));
426 rprintf(FINFO,"Literal data: %s bytes\n",
427 human_num(stats.literal_data));
428 rprintf(FINFO,"Matched data: %s bytes\n",
429 human_num(stats.matched_data));
430 rprintf(FINFO,"File list size: %s\n",
431 human_num(stats.flist_size));
432 if (stats.flist_buildtime) {
434 "File list generation time: %s seconds\n",
435 comma_dnum((double)stats.flist_buildtime / 1000, 3));
437 "File list transfer time: %s seconds\n",
438 comma_dnum((double)stats.flist_xfertime / 1000, 3));
440 rprintf(FINFO,"Total bytes sent: %s\n",
441 human_num(total_written));
442 rprintf(FINFO,"Total bytes received: %s\n",
443 human_num(total_read));
446 if (INFO_GTE(STATS, 1)) {
447 rprintf(FCLIENT, "\n");
449 "sent %s bytes received %s bytes %s bytes/sec\n",
450 human_num(total_written), human_num(total_read),
451 bytes_per_sec_human_dnum());
452 rprintf(FINFO, "total size is %s speedup is %s%s\n",
453 human_num(stats.total_size),
454 comma_dnum((double)stats.total_size / (total_written+total_read), 2),
455 write_batch < 0 ? " (BATCH ONLY)" : dry_run ? " (DRY RUN)" : "");
464 * If our C library can get malloc statistics, then show them to FINFO
466 static void show_malloc_stats(void)
473 rprintf(FCLIENT, "\n");
474 rprintf(FINFO, RSYNC_NAME "[%d] (%s%s%s) heap statistics:\n",
475 (int)getpid(), am_server ? "server " : "",
476 am_daemon ? "daemon " : "", who_am_i());
477 rprintf(FINFO, " arena: %10ld (bytes from sbrk)\n",
479 rprintf(FINFO, " ordblks: %10ld (chunks not in use)\n",
481 rprintf(FINFO, " smblks: %10ld\n",
483 rprintf(FINFO, " hblks: %10ld (chunks from mmap)\n",
485 rprintf(FINFO, " hblkhd: %10ld (bytes from mmap)\n",
487 rprintf(FINFO, " allmem: %10ld (bytes from sbrk + mmap)\n",
488 (long)mi.arena + mi.hblkhd);
489 rprintf(FINFO, " usmblks: %10ld\n",
491 rprintf(FINFO, " fsmblks: %10ld\n",
493 rprintf(FINFO, " uordblks: %10ld (bytes used)\n",
495 rprintf(FINFO, " fordblks: %10ld (bytes free)\n",
497 rprintf(FINFO, " keepcost: %10ld (bytes in releasable chunk)\n",
499 #endif /* HAVE_MALLINFO */
503 /* Start the remote shell. cmd may be NULL to use the default. */
504 static pid_t do_cmd(char *cmd, char *machine, char *user, char **remote_argv, int remote_argc,
505 int *f_in_p, int *f_out_p)
508 char *args[MAX_ARGS], *need_to_free = NULL;
512 if (!read_batch && !local_server) {
513 char *t, *f, in_quote = '\0';
514 char *rsh_env = getenv(RSYNC_RSH_ENV);
519 cmd = need_to_free = strdup(cmd);
521 for (t = f = cmd; *f; f++) {
524 /* Comparison leaves rooms for server_options(). */
525 if (argc >= MAX_ARGS - MAX_SERVER_ARGS)
528 while (*f != ' ' || in_quote) {
532 "Missing trailing-%c in remote-shell command.\n",
534 exit_cleanup(RERR_SYNTAX);
539 if (*f == '\'' || *f == '"') {
544 if (*f == in_quote && *++f != in_quote) {
554 /* NOTE: must preserve t == start of command name until the end of the args handling! */
555 if ((t = strrchr(cmd, '/')) != NULL)
560 /* Check to see if we've already been given '-l user' in the remote-shell command. */
561 for (i = 0; i < argc-1; i++) {
562 if (!strcmp(args[i], "-l") && args[i+1][0] != '-')
567 /* remsh (on HPUX) takes the arguments the other way around */
568 args[argc++] = machine;
569 if (user && !(daemon_connection && dash_l_set)) {
574 if (user && !(daemon_connection && dash_l_set)) {
579 if (default_af_hint == AF_INET && strcmp(t, "ssh") == 0)
580 args[argc++] = "-4"; /* we're using ssh so we can add a -4 option */
583 if (default_af_hint == AF_INET6 && strcmp(t, "ssh") == 0)
584 args[argc++] = "-6"; /* we're using ssh so we can add a -6 option */
586 args[argc++] = machine;
589 args[argc++] = rsync_path;
591 if (blocking_io < 0 && (strcmp(t, "rsh") == 0 || strcmp(t, "remsh") == 0))
594 if (daemon_connection > 0) {
595 args[argc++] = "--server";
596 args[argc++] = "--daemon";
598 server_options(args, &argc);
600 if (argc >= MAX_ARGS - 2)
606 if (!daemon_connection) {
607 while (remote_argc > 0) {
608 if (argc >= MAX_ARGS - 1) {
610 rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n");
611 exit_cleanup(RERR_SYNTAX);
613 if (**remote_argv == '-') {
614 if (asprintf(args + argc++, "./%s", *remote_argv++) < 0)
615 out_of_memory("do_cmd");
617 args[argc++] = *remote_argv++;
624 if (DEBUG_GTE(CMD, 2)) {
625 for (i = 0; i < argc; i++)
626 rprintf(FCLIENT, "cmd[%d]=%s ", i, args[i]);
627 rprintf(FCLIENT, "\n");
631 int from_gen_pipe[2];
632 set_allow_inc_recurse();
633 if (fd_pair(from_gen_pipe) < 0) {
634 rsyserr(FERROR, errno, "pipe");
635 exit_cleanup(RERR_IPC);
637 batch_gen_fd = from_gen_pipe[0];
638 *f_out_p = from_gen_pipe[1];
640 pid = (pid_t)-1; /* no child pid */
644 } else if (local_server) {
645 /* If the user didn't request --[no-]whole-file, force
646 * it on, but only if we're not batch processing. */
647 if (whole_file < 0 && !write_batch)
649 set_allow_inc_recurse();
650 pid = local_child(argc, args, f_in_p, f_out_p, child_main);
655 pid = piped_child(args, f_in_p, f_out_p);
659 if (protect_args && !daemon_connection)
660 send_protected_args(*f_out_p, args);
669 /* The receiving side operates in one of two modes:
671 * 1. it receives any number of files into a destination directory,
672 * placing them according to their names in the file-list.
674 * 2. it receives a single file and saves it using the name in the
675 * destination path instead of its file-list name. This requires a
676 * "local name" for writing out the destination file.
678 * So, our task is to figure out what mode/local-name we need.
679 * For mode 1, we change into the destination directory and return NULL.
680 * For mode 2, we change into the directory containing the destination
681 * file (if we aren't already there) and return the local-name. */
682 static char *get_local_name(struct file_list *flist, char *dest_path)
685 int statret, trailing_slash;
688 if (DEBUG_GTE(RECV, 1)) {
689 rprintf(FINFO, "get_local_name count=%d %s\n",
690 file_total, NS(dest_path));
693 if (!dest_path || list_only)
696 /* Treat an empty string as a copy into the current directory. */
700 if (daemon_filter_list.head) {
701 char *slash = strrchr(dest_path, '/');
702 if (slash && (slash[1] == '\0' || (slash[1] == '.' && slash[2] == '\0')))
706 if ((*dest_path != '.' || dest_path[1] != '\0')
707 && (check_filter(&daemon_filter_list, FLOG, dest_path, 0) < 0
708 || check_filter(&daemon_filter_list, FLOG, dest_path, 1) < 0)) {
709 rprintf(FERROR, "ERROR: daemon has excluded destination \"%s\"\n",
711 exit_cleanup(RERR_FILESELECT);
717 /* See what currently exists at the destination. */
718 statret = do_stat(dest_path, &st);
719 cp = strrchr(dest_path, '/');
720 trailing_slash = cp && !cp[1];
722 if (mkpath_dest_arg && statret < 0 && (cp || file_total > 1)) {
723 int ret = make_path(dest_path, file_total > 1 && !trailing_slash ? 0 : MKP_DROP_NAME);
726 if (INFO_GTE(NAME, 1)) {
727 if (file_total == 1 || trailing_slash)
729 rprintf(FINFO, "created %d director%s for %s\n", ret, ret == 1 ? "y" : "ies", dest_path);
730 if (file_total == 1 || trailing_slash)
733 if (file_total > 1 || trailing_slash)
734 statret = do_stat(dest_path, &st);
738 /* If the destination is a dir, enter it and use mode 1. */
739 if (S_ISDIR(st.st_mode)) {
740 if (!change_dir(dest_path, CD_NORMAL)) {
741 rsyserr(FERROR, errno, "change_dir#1 %s failed",
742 full_fname(dest_path));
743 exit_cleanup(RERR_FILESELECT);
745 filesystem_dev = st.st_dev; /* ensures --force works right w/-x */
748 if (file_total > 1) {
750 "ERROR: destination must be a directory when"
751 " copying more than 1 file\n");
752 exit_cleanup(RERR_FILESELECT);
754 if (file_total == 1 && S_ISDIR(flist->files[0]->mode)) {
756 "ERROR: cannot overwrite non-directory"
757 " with a directory\n");
758 exit_cleanup(RERR_FILESELECT);
760 } else if (errno != ENOENT) {
761 /* If we don't know what's at the destination, fail. */
762 rsyserr(FERROR, errno, "ERROR: cannot stat destination %s",
763 full_fname(dest_path));
764 exit_cleanup(RERR_FILESELECT);
767 /* If we need a destination directory because the transfer is not
768 * of a single non-directory or the user has requested one via a
769 * destination path ending in a slash, create one and use mode 1. */
770 if (file_total > 1 || trailing_slash) {
772 *cp = '\0'; /* Lop off the final slash (if any). */
775 rprintf(FERROR, "ERROR: destination path is not a directory\n");
776 exit_cleanup(RERR_SYNTAX);
779 if (do_mkdir(dest_path, ACCESSPERMS) != 0) {
781 rsyserr(FERROR, errno, "mkdir %s failed",
782 full_fname(dest_path));
783 exit_cleanup(RERR_FILEIO);
786 if (flist->high >= flist->low
787 && strcmp(flist->files[flist->low]->basename, ".") == 0)
788 flist->files[0]->flags |= FLAG_DIR_CREATED;
790 if (INFO_GTE(NAME, 1))
791 rprintf(FINFO, "created directory %s\n", dest_path);
794 /* Indicate that dest dir doesn't really exist. */
798 if (!change_dir(dest_path, dry_run > 1 ? CD_SKIP_CHDIR : CD_NORMAL)) {
799 rsyserr(FERROR, errno, "change_dir#2 %s failed",
800 full_fname(dest_path));
801 exit_cleanup(RERR_FILESELECT);
807 /* Otherwise, we are writing a single file, possibly on top of an
808 * existing non-directory. Change to the item's parent directory
809 * (if it has a path component), return the basename of the
810 * destination file as the local name, and use mode 2. */
818 if (!change_dir(dest_path, CD_NORMAL)) {
819 rsyserr(FERROR, errno, "change_dir#3 %s failed",
820 full_fname(dest_path));
821 exit_cleanup(RERR_FILESELECT);
828 /* This function checks on our alternate-basis directories. If we're in
829 * dry-run mode and the destination dir does not yet exist, we'll try to
830 * tweak any dest-relative paths to make them work for a dry-run (the
831 * destination dir must be in curr_dir[] when this function is called).
832 * We also warn about any arg that is non-existent or not a directory. */
833 static void check_alt_basis_dirs(void)
836 char *slash = strrchr(curr_dir, '/');
839 for (j = 0; j < basis_dir_cnt; j++) {
840 char *bdir = basis_dir[j];
841 int bd_len = strlen(bdir);
842 if (bd_len > 1 && bdir[bd_len-1] == '/')
843 bdir[--bd_len] = '\0';
844 if (dry_run > 1 && *bdir != '/') {
845 int len = curr_dir_len + 1 + bd_len + 1;
846 char *new = new_array(char, len);
847 if (slash && strncmp(bdir, "../", 3) == 0) {
848 /* We want to remove only one leading "../" prefix for
849 * the directory we couldn't create in dry-run mode:
850 * this ensures that any other ".." references get
851 * evaluated the same as they would for a live copy. */
853 pathjoin(new, len, curr_dir, bdir + 3);
856 pathjoin(new, len, curr_dir, bdir);
857 basis_dir[j] = bdir = new;
859 if (do_stat(bdir, &st) < 0)
860 rprintf(FWARNING, "%s arg does not exist: %s\n", alt_dest_opt(0), bdir);
861 else if (!S_ISDIR(st.st_mode))
862 rprintf(FWARNING, "%s arg is not a dir: %s\n", alt_dest_opt(0), bdir);
866 /* This is only called by the sender. */
867 static void read_final_goodbye(int f_in, int f_out)
871 char xname[MAXPATHLEN];
873 shutting_down = True;
875 if (protocol_version < 29)
878 i = read_ndx_and_attrs(f_in, f_out, &iflags, &fnamecmp_type, xname, &xlen);
879 if (protocol_version >= 31 && i == NDX_DONE) {
881 write_ndx(f_out, NDX_DONE);
883 if (batch_gen_fd >= 0) {
884 while (read_int(batch_gen_fd) != NDX_DEL_STATS) {}
885 read_del_stats(batch_gen_fd);
887 write_int(f_out, NDX_DONE);
889 i = read_ndx_and_attrs(f_in, f_out, &iflags, &fnamecmp_type, xname, &xlen);
894 rprintf(FERROR, "Invalid packet at end of run (%d) [%s]\n",
896 exit_cleanup(RERR_PROTOCOL);
900 static void do_server_sender(int f_in, int f_out, int argc, char *argv[])
902 struct file_list *flist;
905 if (DEBUG_GTE(SEND, 1))
906 rprintf(FINFO, "server_sender starting pid=%d\n", (int)getpid());
908 if (am_daemon && lp_write_only(module_id)) {
909 rprintf(FERROR, "ERROR: module is write only\n");
910 exit_cleanup(RERR_SYNTAX);
912 if (am_daemon && read_only && remove_source_files) {
914 "ERROR: --remove-%s-files cannot be used with a read-only module\n",
915 remove_source_files == 1 ? "source" : "sent");
916 exit_cleanup(RERR_SYNTAX);
919 rprintf(FERROR, "ERROR: do_server_sender called without args\n");
920 exit_cleanup(RERR_SYNTAX);
923 become_copy_as_user();
926 if (!relative_paths) {
927 if (!change_dir(dir, CD_NORMAL)) {
928 rsyserr(FERROR, errno, "change_dir#3 %s failed",
930 exit_cleanup(RERR_FILESELECT);
936 if (argc == 0 && (recurse || xfer_dirs || list_only)) {
942 flist = send_file_list(f_out,argc,argv);
943 if (!flist || flist->used == 0) {
944 /* Make sure input buffering is off so we can't hang in noop_io_until_death(). */
945 io_end_buffering_in(0);
946 /* TODO: we should really exit in a more controlled manner. */
950 io_start_buffering_in(f_in);
952 send_files(f_in, f_out);
953 io_flush(FULL_FLUSH);
955 if (protocol_version >= 24)
956 read_final_goodbye(f_in, f_out);
957 io_flush(FULL_FLUSH);
962 static int do_recv(int f_in, int f_out, char *local_name)
968 /* The receiving side mustn't obey this, or an existing symlink that
969 * points to an identical file won't be replaced by the referent. */
970 copy_links = copy_dirlinks = copy_unsafe_links = 0;
972 #ifdef SUPPORT_HARD_LINKS
973 if (preserve_hard_links && !inc_recurse)
974 match_hard_links(first_flist);
977 if (fd_pair(error_pipe) < 0) {
978 rsyserr(FERROR, errno, "pipe failed in do_recv");
979 exit_cleanup(RERR_IPC);
985 if (backup_dir_len > 1)
986 backup_dir_buf[backup_dir_len-1] = '\0';
987 ret = do_stat(backup_dir_buf, &st);
988 if (ret != 0 || !S_ISDIR(st.st_mode)) {
990 rprintf(FERROR, "The backup-dir is not a directory: %s\n", backup_dir_buf);
991 exit_cleanup(RERR_SYNTAX);
993 if (errno != ENOENT) {
994 rprintf(FERROR, "Failed to stat %s: %s\n", backup_dir_buf, strerror(errno));
995 exit_cleanup(RERR_FILEIO);
997 if (INFO_GTE(BACKUP, 1))
998 rprintf(FINFO, "(new) backup_dir is %s\n", backup_dir_buf);
999 } else if (INFO_GTE(BACKUP, 1))
1000 rprintf(FINFO, "backup_dir is %s\n", backup_dir_buf);
1001 if (backup_dir_len > 1)
1002 backup_dir_buf[backup_dir_len-1] = '/';
1005 io_flush(FULL_FLUSH);
1007 if ((pid = do_fork()) == -1) {
1008 rsyserr(FERROR, errno, "fork failed in do_recv");
1009 exit_cleanup(RERR_IPC);
1014 send_msgs_to_gen = am_server;
1016 close(error_pipe[0]);
1018 /* We can't let two processes write to the socket at one time. */
1019 io_end_multiplex_out(MPLX_SWITCHING);
1023 f_out = error_pipe[1];
1025 bwlimit_writemax = 0; /* receiver doesn't need to do this */
1028 io_start_buffering_in(f_in);
1029 io_start_multiplex_out(f_out);
1031 recv_files(f_in, f_out, local_name);
1032 io_flush(FULL_FLUSH);
1035 if (output_needs_newline) {
1036 fputc('\n', stdout);
1037 output_needs_newline = 0;
1040 write_int(f_out, NDX_DONE);
1041 send_msg(MSG_STATS, (char*)&stats.total_read, sizeof stats.total_read, 0);
1042 io_flush(FULL_FLUSH);
1044 /* Handle any keep-alive packets from the post-processing work
1045 * that the generator does. */
1046 if (protocol_version >= 29) {
1047 kluge_around_eof = -1;
1049 /* This should only get stopped via a USR2 signal. */
1050 read_final_goodbye(f_in, f_out);
1052 rprintf(FERROR, "Invalid packet at end of run [%s]\n",
1054 exit_cleanup(RERR_PROTOCOL);
1057 /* Finally, we go to sleep until our parent kills us with a
1058 * USR2 signal. We sleep for a short time, as on some OSes
1059 * a signal won't interrupt a sleep! */
1065 flist_receiving_enabled = True;
1067 io_end_multiplex_in(MPLX_SWITCHING);
1068 if (write_batch && !am_server)
1071 close(error_pipe[1]);
1075 f_in = error_pipe[0];
1077 io_start_buffering_out(f_out);
1078 io_start_multiplex_in(f_in);
1080 #ifdef SUPPORT_HARD_LINKS
1081 if (preserve_hard_links && inc_recurse) {
1082 struct file_list *flist;
1083 for (flist = first_flist; flist; flist = flist->next)
1084 match_hard_links(flist);
1088 generate_files(f_out, local_name);
1091 io_flush(FULL_FLUSH);
1092 shutting_down = True;
1093 if (protocol_version >= 24) {
1094 /* send a final goodbye message */
1095 write_ndx(f_out, NDX_DONE);
1097 io_flush(FULL_FLUSH);
1100 wait_process_with_flush(pid, &exit_code);
1104 static void do_server_recv(int f_in, int f_out, int argc, char *argv[])
1107 struct file_list *flist;
1108 char *local_name = NULL;
1111 if (filesfrom_fd >= 0 && msgs2stderr != 1 && protocol_version < 31) {
1112 /* We can't mix messages with files-from data on the socket,
1113 * so temporarily turn off info/debug messages. */
1114 negate_output_levels();
1119 if (DEBUG_GTE(RECV, 1))
1120 rprintf(FINFO, "server_recv(%d) starting pid=%d\n", argc, (int)getpid());
1122 if (am_daemon && read_only) {
1123 rprintf(FERROR,"ERROR: module is read only\n");
1124 exit_cleanup(RERR_SYNTAX);
1128 become_copy_as_user();
1131 char *dir = argv[0];
1134 if (!am_daemon && !change_dir(dir, CD_NORMAL)) {
1135 rsyserr(FERROR, errno, "change_dir#4 %s failed",
1137 exit_cleanup(RERR_FILESELECT);
1141 if (protocol_version >= 30)
1142 io_start_multiplex_in(f_in);
1144 io_start_buffering_in(f_in);
1145 recv_filter_list(f_in);
1147 if (filesfrom_fd >= 0) {
1148 /* We need to send the files-from names to the sender at the
1149 * same time that we receive the file-list from them, so we
1150 * need the IO routines to automatically write out the names
1151 * onto our f_out socket as we read the file-list. This
1152 * avoids both deadlock and extra delays/buffers. */
1153 start_filesfrom_forwarding(filesfrom_fd);
1157 flist = recv_file_list(f_in, -1);
1159 rprintf(FERROR,"server_recv: recv_file_list error\n");
1160 exit_cleanup(RERR_FILESELECT);
1162 if (inc_recurse && file_total == 1)
1163 recv_additional_file_list(f_in);
1166 negate_output_levels();
1169 local_name = get_local_name(flist,argv[0]);
1171 /* Now that we know what our destination directory turned out to be,
1172 * we can sanitize the --link-/copy-/compare-dest args correctly. */
1173 if (sanitize_paths) {
1175 for (dir_p = basis_dir; *dir_p; dir_p++)
1176 *dir_p = sanitize_path(NULL, *dir_p, NULL, curr_dir_depth, SP_DEFAULT);
1178 partial_dir = sanitize_path(NULL, partial_dir, NULL, curr_dir_depth, SP_DEFAULT);
1180 check_alt_basis_dirs();
1182 if (daemon_filter_list.head) {
1184 filter_rule_list *elp = &daemon_filter_list;
1186 for (dir_p = basis_dir; *dir_p; dir_p++) {
1189 dir += module_dirlen;
1190 if (check_filter(elp, FLOG, dir, 1) < 0)
1191 goto options_rejected;
1193 if (partial_dir && *partial_dir == '/'
1194 && check_filter(elp, FLOG, partial_dir + module_dirlen, 1) < 0) {
1196 rprintf(FERROR, "Your options have been rejected by the server.\n");
1197 exit_cleanup(RERR_SYNTAX);
1201 exit_code = do_recv(f_in, f_out, local_name);
1202 exit_cleanup(exit_code);
1206 int child_main(int argc, char *argv[])
1208 start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv);
1213 void start_server(int f_in, int f_out, int argc, char *argv[])
1215 set_nonblocking(f_in);
1216 set_nonblocking(f_out);
1218 io_set_sock_fds(f_in, f_out);
1219 setup_protocol(f_out, f_in);
1221 if (protocol_version >= 23)
1222 io_start_multiplex_out(f_out);
1223 if (am_daemon && io_timeout && protocol_version >= 31)
1224 send_msg_int(MSG_IO_TIMEOUT, io_timeout);
1227 keep_dirlinks = 0; /* Must be disabled on the sender. */
1228 if (need_messages_from_generator)
1229 io_start_multiplex_in(f_in);
1231 io_start_buffering_in(f_in);
1232 recv_filter_list(f_in);
1233 do_server_sender(f_in, f_out, argc, argv);
1235 do_server_recv(f_in, f_out, argc, argv);
1239 /* This is called once the connection has been negotiated. It is used
1240 * for rsyncd, remote-shell, and local connections. */
1241 int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[])
1243 struct file_list *flist = NULL;
1244 int exit_code = 0, exit_code2 = 0;
1245 char *local_name = NULL;
1247 cleanup_child_pid = pid;
1249 set_nonblocking(f_in);
1250 set_nonblocking(f_out);
1253 io_set_sock_fds(f_in, f_out);
1254 setup_protocol(f_out,f_in);
1256 /* We set our stderr file handle to blocking because ssh might have
1257 * set it to non-blocking. This can be particularly troublesome if
1258 * stderr is a clone of stdout, because ssh would have set our stdout
1259 * to non-blocking at the same time (which can easily cause us to lose
1260 * output from our print statements). This kluge shouldn't cause ssh
1261 * any problems for how we use it. Note also that we delayed setting
1262 * this until after the above protocol setup so that we know for sure
1263 * that ssh is done twiddling its file descriptors. */
1264 set_blocking(STDERR_FILENO);
1267 keep_dirlinks = 0; /* Must be disabled on the sender. */
1270 && (log_format_has(stdout_format, 'C')
1271 || log_format_has(logfile_format, 'C')))
1272 sender_keeps_checksum = 1;
1274 if (protocol_version >= 30)
1275 io_start_multiplex_out(f_out);
1277 io_start_buffering_out(f_out);
1278 if (protocol_version >= 31 || (!filesfrom_host && protocol_version >= 23))
1279 io_start_multiplex_in(f_in);
1281 io_start_buffering_in(f_in);
1282 send_filter_list(f_out);
1284 filesfrom_fd = f_in;
1286 if (write_batch && !am_server)
1287 start_write_batch(f_out);
1289 become_copy_as_user();
1291 flist = send_file_list(f_out, argc, argv);
1292 if (DEBUG_GTE(FLIST, 3))
1293 rprintf(FINFO,"file list sent\n");
1295 if (protocol_version < 31 && filesfrom_host && protocol_version >= 23)
1296 io_start_multiplex_in(f_in);
1298 io_flush(NORMAL_FLUSH);
1299 send_files(f_in, f_out);
1300 io_flush(FULL_FLUSH);
1302 if (protocol_version >= 24)
1303 read_final_goodbye(f_in, f_out);
1305 if (DEBUG_GTE(EXIT, 2))
1306 rprintf(FINFO,"client_run waiting on %d\n", (int) pid);
1307 io_flush(FULL_FLUSH);
1308 wait_process_with_flush(pid, &exit_code);
1311 io_flush(FULL_FLUSH);
1312 exit_cleanup(exit_code);
1316 if (protocol_version >= 23)
1317 io_start_multiplex_in(f_in);
1318 if (need_messages_from_generator)
1319 io_start_multiplex_out(f_out);
1321 io_start_buffering_out(f_out);
1324 become_copy_as_user();
1326 send_filter_list(read_batch ? -1 : f_out);
1328 if (filesfrom_fd >= 0) {
1329 start_filesfrom_forwarding(filesfrom_fd);
1333 if (write_batch && !am_server)
1334 start_write_batch(f_in);
1335 flist = recv_file_list(f_in, -1);
1336 if (inc_recurse && file_total == 1)
1337 recv_additional_file_list(f_in);
1339 if (flist && flist->used > 0) {
1340 local_name = get_local_name(flist, argv[0]);
1342 check_alt_basis_dirs();
1344 exit_code2 = do_recv(f_in, f_out, local_name);
1351 if (DEBUG_GTE(RECV, 1))
1352 rprintf(FINFO,"client_run2 waiting on %d\n", (int) pid);
1353 io_flush(FULL_FLUSH);
1354 wait_process_with_flush(pid, &exit_code);
1357 return MAX(exit_code, exit_code2);
1360 static void dup_argv(char *argv[])
1364 for (i = 0; argv[i]; i++)
1365 argv[i] = strdup(argv[i]);
1369 /* Start a client for either type of remote connection. Work out
1370 * whether the arguments request a remote shell or rsyncd connection,
1371 * and call the appropriate connection function, then run_client.
1373 * Calls either start_socket_client (for sockets) or do_cmd and
1374 * client_run (for ssh). */
1375 static int start_client(int argc, char *argv[])
1377 char *p, *shell_machine = NULL, *shell_user = NULL;
1379 int remote_argc, env_port = rsync_port;
1384 /* Don't clobber argv[] so that ps(1) can still show the right
1388 if (!read_batch) { /* for read_batch, NO source is specified */
1389 char *path = check_for_hostspec(argv[0], &shell_machine, &rsync_port);
1390 if (path) { /* source is remote */
1397 if (argc == 1 || **argv == ':')
1398 argc = 0; /* no dest arg */
1399 else if (check_for_hostspec(*argv, &dummy_host, &dummy_port)) {
1401 "The source and destination cannot both be remote.\n");
1402 exit_cleanup(RERR_SYNTAX);
1404 remote_argc--; /* don't count dest */
1407 if (filesfrom_host && *filesfrom_host && strcmp(filesfrom_host, shell_machine) != 0) {
1409 "--files-from hostname is not the same as the transfer hostname\n");
1410 exit_cleanup(RERR_SYNTAX);
1414 daemon_connection = shell_cmd ? 1 : -1;
1415 } else { /* source is local, check dest arg */
1420 remote_argv = argv + argc;
1422 static char *dotarg[1] = { "." };
1424 remote_argv = dotarg;
1428 path = check_for_hostspec(p, &shell_machine, &rsync_port);
1429 if (path && filesfrom_host && *filesfrom_host && strcmp(filesfrom_host, shell_machine) != 0) {
1431 "--files-from hostname is not the same as the transfer hostname\n");
1432 exit_cleanup(RERR_SYNTAX);
1434 if (!path) { /* no hostspec found, so src & dest are local */
1436 if (filesfrom_host) {
1438 "--files-from cannot be remote when the transfer is local\n");
1439 exit_cleanup(RERR_SYNTAX);
1441 shell_machine = NULL;
1443 } else { /* hostspec was found, so dest is remote */
1446 daemon_connection = shell_cmd ? 1 : -1;
1449 } else { /* read_batch */
1451 if (check_for_hostspec(argv[argc-1], &shell_machine, &rsync_port)) {
1452 rprintf(FERROR, "remote destination is not allowed with --read-batch\n");
1453 exit_cleanup(RERR_SYNTAX);
1455 remote_argv = argv += argc - 1;
1456 remote_argc = argc = 1;
1460 if (!rsync_port && remote_argc && !**remote_argv) /* Turn an empty arg into a dot dir. */
1465 int dummy_port = rsync_port;
1467 /* For local source, extra source args must not have hostspec. */
1468 for (i = 1; i < argc; i++) {
1469 if (check_for_hostspec(argv[i], &dummy_host, &dummy_port)) {
1470 rprintf(FERROR, "Unexpected remote arg: %s\n", argv[i]);
1471 exit_cleanup(RERR_SYNTAX);
1476 int dummy_port = rsync_port;
1478 /* For remote source, any extra source args must have either
1479 * the same hostname or an empty hostname. */
1480 for (i = 1; i < remote_argc; i++) {
1481 char *arg = check_for_hostspec(remote_argv[i], &dummy_host, &dummy_port);
1483 rprintf(FERROR, "Unexpected local arg: %s\n", remote_argv[i]);
1484 rprintf(FERROR, "If arg is a remote file/dir, prefix it with a colon (:).\n");
1485 exit_cleanup(RERR_SYNTAX);
1487 if (*dummy_host && strcmp(dummy_host, shell_machine) != 0) {
1488 rprintf(FERROR, "All source args must come from the same machine.\n");
1489 exit_cleanup(RERR_SYNTAX);
1491 if (rsync_port != dummy_port) {
1492 if (!rsync_port || !dummy_port)
1493 rprintf(FERROR, "All source args must use the same hostspec format.\n");
1495 rprintf(FERROR, "All source args must use the same port number.\n");
1496 exit_cleanup(RERR_SYNTAX);
1498 if (!rsync_port && !*arg) /* Turn an empty arg into a dot dir. */
1500 remote_argv[i] = arg;
1505 rsync_port = RSYNC_PORT;
1507 env_port = rsync_port;
1509 if (daemon_connection < 0)
1510 return start_socket_client(shell_machine, remote_argc, remote_argv, argc, argv);
1512 if (password_file && !daemon_connection) {
1513 rprintf(FERROR, "The --password-file option may only be "
1514 "used when accessing an rsync daemon.\n");
1515 exit_cleanup(RERR_SYNTAX);
1518 if (connect_timeout) {
1519 rprintf(FERROR, "The --contimeout option may only be "
1520 "used when connecting to an rsync daemon.\n");
1521 exit_cleanup(RERR_SYNTAX);
1524 if (shell_machine) {
1525 p = strrchr(shell_machine,'@');
1528 shell_user = shell_machine;
1529 shell_machine = p+1;
1533 if (DEBUG_GTE(CMD, 2)) {
1534 rprintf(FINFO,"cmd=%s machine=%s user=%s path=%s\n",
1535 NS(shell_cmd), NS(shell_machine), NS(shell_user),
1536 NS(remote_argv[0]));
1540 if (daemon_connection)
1541 set_env_num("RSYNC_PORT", env_port);
1544 pid = do_cmd(shell_cmd, shell_machine, shell_user, remote_argv, remote_argc, &f_in, &f_out);
1546 /* if we're running an rsync server on the remote host over a
1547 * remote shell command, we need to do the RSYNCD protocol first */
1548 if (daemon_connection) {
1550 tmpret = start_inband_exchange(f_in, f_out, shell_user, remote_argc, remote_argv);
1555 ret = client_run(f_in, f_out, pid, argc, argv);
1564 static void sigusr1_handler(UNUSED(int val))
1566 called_from_signal_handler = 1;
1567 exit_cleanup(RERR_SIGNAL1);
1570 static void sigusr2_handler(UNUSED(int val))
1576 _exit(RERR_PARTIAL);
1580 #if defined SIGINFO || defined SIGVTALRM
1581 static void siginfo_handler(UNUSED(int val))
1583 if (!am_server && !INFO_GTE(PROGRESS, 1))
1584 want_progress_now = True;
1588 void remember_children(UNUSED(int val))
1593 /* An empty waitpid() loop was put here by Tridge and we could never
1594 * get him to explain why he put it in, so rather than taking it
1595 * out we're instead saving the child exit statuses for later use.
1596 * The waitpid() loop presumably eliminates all possibility of leaving
1597 * zombie children, maybe that's why he did it. */
1598 while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
1599 /* save the child's exit status */
1600 for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) {
1601 if (pid_stat_table[cnt].pid == 0) {
1602 pid_stat_table[cnt].pid = pid;
1603 pid_stat_table[cnt].status = status;
1609 #ifndef HAVE_SIGACTION
1610 signal(SIGCHLD, remember_children);
1616 * This routine catches signals and tries to send them to gdb.
1618 * Because it's called from inside a signal handler it ought not to
1619 * use too many library routines.
1621 * @todo Perhaps use "screen -X" instead/as well, to help people
1622 * debugging without easy access to X. Perhaps use an environment
1623 * variable, or just call a script?
1625 * @todo The /proc/ magic probably only works on Linux (and
1626 * Solaris?) Can we be more portable?
1628 #ifdef MAINTAINER_MODE
1629 const char *get_panic_action(void)
1631 const char *cmd_fmt = getenv("RSYNC_PANIC_ACTION");
1635 return "xterm -display :0 -T Panic -n Panic -e gdb /proc/%d/exe %d";
1640 * Handle a fatal signal by launching a debugger, controlled by $RSYNC_PANIC_ACTION.
1642 * This signal handler is only installed if we were configured with
1643 * --enable-maintainer-mode. Perhaps it should always be on and we
1644 * should just look at the environment variable, but I'm a bit leery
1645 * of a signal sending us into a busy loop.
1647 static void rsync_panic_handler(UNUSED(int whatsig))
1650 int ret, pid_int = getpid();
1652 snprintf(cmd_buf, sizeof cmd_buf, get_panic_action(), pid_int, pid_int);
1654 /* Unless we failed to execute gdb, we allow the process to
1655 * continue. I'm not sure if that's right. */
1656 ret = shell_exec(cmd_buf);
1663 int main(int argc,char *argv[])
1670 #ifdef HAVE_SIGACTION
1671 # ifdef HAVE_SIGPROCMASK
1674 sigemptyset(&sigmask);
1676 sigact.sa_flags = SA_NOCLDSTOP;
1678 SIGACTMASK(SIGUSR1, sigusr1_handler);
1679 SIGACTMASK(SIGUSR2, sigusr2_handler);
1680 SIGACTMASK(SIGCHLD, remember_children);
1681 #ifdef MAINTAINER_MODE
1682 SIGACTMASK(SIGSEGV, rsync_panic_handler);
1683 SIGACTMASK(SIGFPE, rsync_panic_handler);
1684 SIGACTMASK(SIGABRT, rsync_panic_handler);
1685 SIGACTMASK(SIGBUS, rsync_panic_handler);
1688 SIGACTMASK(SIGINFO, siginfo_handler);
1691 SIGACTMASK(SIGVTALRM, siginfo_handler);
1694 starttime = time(NULL);
1697 am_root = our_uid == ROOT_UID;
1699 memset(&stats, 0, sizeof(stats));
1701 /* Even a non-daemon runs needs the default config values to be set, e.g.
1702 * lp_dont_compress() is queried when no --skip-compress option is set. */
1703 reset_daemon_vars();
1707 exit_cleanup(RERR_SYNTAX);
1710 /* Get the umask for use in permission calculations. We no longer set
1711 * it to zero; that is ugly and pointless now that all the callers that
1712 * relied on it have been reeducated to work with default ACLs. */
1713 umask(orig_umask = umask(0));
1715 #if defined CONFIG_LOCALE && defined HAVE_SETLOCALE
1716 setlocale(LC_CTYPE, "");
1719 if (!parse_arguments(&argc, (const char ***) &argv)) {
1721 exit_cleanup(RERR_SYNTAX);
1724 && poptDupArgv(argc, (const char **)argv, &cooked_argc, (const char ***)&cooked_argv) != 0)
1725 out_of_memory("main");
1727 SIGACTMASK(SIGINT, sig_int);
1728 SIGACTMASK(SIGHUP, sig_int);
1729 SIGACTMASK(SIGTERM, sig_int);
1730 #if defined HAVE_SIGACTION && HAVE_SIGPROCMASK
1731 sigprocmask(SIG_UNBLOCK, &sigmask, NULL);
1734 /* Ignore SIGPIPE; we consistently check error codes and will
1736 SIGACTION(SIGPIPE, SIG_IGN);
1738 SIGACTION(SIGXFSZ, SIG_IGN);
1741 /* Initialize change_dir() here because on some old systems getcwd
1742 * (implemented by forking "pwd" and reading its output) doesn't
1743 * work when there are other child processes. Also, on all systems
1744 * that implement getcwd that way "pwd" can't be found after chroot. */
1745 change_dir(NULL, CD_NORMAL);
1747 if ((write_batch || read_batch) && !am_server) {
1748 open_batch_files(); /* sets batch_fd */
1750 read_stream_flags(batch_fd);
1752 write_stream_flags(batch_fd);
1754 if (write_batch < 0)
1761 } else if (am_daemon)
1762 return daemon_main();
1764 if (am_server && protect_args) {
1765 char buf[MAXPATHLEN];
1767 read_args(STDIN_FILENO, NULL, buf, sizeof buf, 1, &argv, &argc, NULL);
1768 if (!parse_arguments(&argc, (const char ***) &argv)) {
1770 exit_cleanup(RERR_SYNTAX);
1776 exit_cleanup(RERR_SYNTAX);
1780 set_nonblocking(STDIN_FILENO);
1781 set_nonblocking(STDOUT_FILENO);
1783 return start_daemon(STDIN_FILENO, STDOUT_FILENO);
1784 start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv);
1787 ret = start_client(argc, argv);
1789 exit_cleanup(RERR_STARTCLIENT);