1 /* -*- c-file-style: "linux" -*-
3 Copyright (C) 1996-2001 by Andrew Tridgell <tridge@samba.org>
4 Copyright (C) Paul Mackerras 1996
5 Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 static void show_malloc_stats(void);
32 /****************************************************************************
33 wait for a process to exit, calling io_flush while waiting
34 ****************************************************************************/
35 void wait_process(pid_t pid, int *status)
37 while (waitpid(pid, status, WNOHANG) == 0) {
42 /* TODO: If the child exited on a signal, then log an
43 * appropriate error message. Perhaps we should also accept a
44 * message describing the purpose of the child. Also indicate
45 * this to the caller so that thhey know something went
47 *status = WEXITSTATUS(*status);
50 static void report(int f)
52 time_t t = time(NULL);
57 extern int remote_version;
61 /* These come out from every process */
67 log_exit(0, __FILE__, __LINE__);
68 if (f == -1 || !am_sender) return;
71 send_stats = verbose || (remote_version >= 20);
73 if (am_sender && send_stats) {
75 /* store total_written in a temporary
76 because write_longint changes it */
77 w = stats.total_written;
78 write_longint(f,stats.total_read);
80 write_longint(f,stats.total_size);
85 /* this is the client */
87 if (!am_sender && send_stats) {
89 stats.total_written = read_longint(f);
90 /* store total_read in a temporary, read_longint changes it */
92 stats.total_size = read_longint(f);
97 if (!am_sender && !send_stats) {
98 /* missing the bytes written by the generator */
99 rprintf(FINFO, "\nCannot show stats as receiver because remote protocol version is less than 20\n");
100 rprintf(FINFO, "Use --stats -v to show stats\n");
103 rprintf(FINFO,"\nNumber of files: %d\n", stats.num_files);
104 rprintf(FINFO,"Number of files transferred: %d\n",
105 stats.num_transferred_files);
106 rprintf(FINFO,"Total file size: %.0f bytes\n",
107 (double)stats.total_size);
108 rprintf(FINFO,"Total transferred file size: %.0f bytes\n",
109 (double)stats.total_transferred_size);
110 rprintf(FINFO,"Literal data: %.0f bytes\n",
111 (double)stats.literal_data);
112 rprintf(FINFO,"Matched data: %.0f bytes\n",
113 (double)stats.matched_data);
114 rprintf(FINFO,"File list size: %d\n", stats.flist_size);
115 rprintf(FINFO,"Total bytes written: %.0f\n",
116 (double)stats.total_written);
117 rprintf(FINFO,"Total bytes read: %.0f\n\n",
118 (double)stats.total_read);
121 if (verbose || do_stats) {
122 rprintf(FINFO,"wrote %.0f bytes read %.0f bytes %.2f bytes/sec\n",
123 (double)stats.total_written,
124 (double)stats.total_read,
125 (stats.total_written+stats.total_read)/(0.5 + (t-starttime)));
126 rprintf(FINFO,"total size is %.0f speedup is %.2f\n",
127 (double)stats.total_size,
128 (1.0*stats.total_size)/(stats.total_written+stats.total_read));
137 * If our C library can get malloc statistics, then show them to FINFO
139 static void show_malloc_stats(void)
143 extern int am_server;
144 extern int am_sender;
145 extern int am_daemon;
149 rprintf(FINFO, RSYNC_NAME "[%d] (%s%s%s) heap statistics:\n",
151 am_server ? "server " : "",
152 am_daemon ? "daemon " : "",
153 am_sender ? "sender" : "receiver");
154 rprintf(FINFO, " arena: %10d (bytes from sbrk)\n", mi.arena);
155 rprintf(FINFO, " ordblks: %10d (chunks not in use)\n", mi.ordblks);
156 rprintf(FINFO, " smblks: %10d\n", mi.smblks);
157 rprintf(FINFO, " hblks: %10d (chunks from mmap)\n", mi.hblks);
158 rprintf(FINFO, " hblkhd: %10d (bytes from mmap)\n", mi.hblkhd);
159 rprintf(FINFO, " usmblks: %10d\n", mi.usmblks);
160 rprintf(FINFO, " fsmblks: %10d\n", mi.fsmblks);
161 rprintf(FINFO, " uordblks: %10d (bytes used)\n", mi.uordblks);
162 rprintf(FINFO, " fordblks: %10d (bytes free)\n", mi.fordblks);
163 rprintf(FINFO, " keepcost: %10d (bytes in releasable chunk)\n", mi.keepcost);
164 #endif /* HAVE_MALLINFO */
168 /* Start the remote shell. cmd may be NULL to use the default. */
169 static pid_t do_cmd(char *cmd,char *machine,char *user,char *path,int *f_in,int *f_out)
175 extern int local_server;
176 extern char *rsync_path;
177 extern int blocking_io;
178 extern int read_batch;
180 if (!read_batch && !local_server) {
182 cmd = getenv(RSYNC_RSH_ENV);
189 for (tok=strtok(cmd," ");tok;tok=strtok(NULL," ")) {
194 /* remsh (on HPUX) takes the arguments the other way around */
195 args[argc++] = machine;
205 args[argc++] = machine;
208 args[argc++] = rsync_path;
210 if ((blocking_io == -1) && (strcmp(cmd, RSYNC_RSH) == 0))
213 server_options(args,&argc);
225 rprintf(FINFO,"cmd=");
227 rprintf(FINFO,"%s ",args[i]);
233 create_flist_from_batch(); /* sets batch_flist */
234 ret = local_child(argc, args, f_in, f_out);
236 ret = piped_child(args,f_in,f_out);
244 out_of_memory("do_cmd");
245 return 0; /* not reached */
251 static char *get_local_name(struct file_list *flist,char *name)
254 extern int orig_umask;
257 rprintf(FINFO,"get_local_name count=%d %s\n",
258 flist->count, NS(name));
263 if (do_stat(name,&st) == 0) {
264 if (S_ISDIR(st.st_mode)) {
265 if (!push_dir(name, 0)) {
266 rprintf(FERROR,"push_dir %s : %s (1)\n",
267 name,strerror(errno));
268 exit_cleanup(RERR_FILESELECT);
272 if (flist->count > 1) {
273 rprintf(FERROR,"ERROR: destination must be a directory when copying more than 1 file\n");
274 exit_cleanup(RERR_FILESELECT);
279 if (flist->count <= 1)
282 if (do_mkdir(name,0777 & ~orig_umask) != 0) {
283 rprintf(FERROR, RSYNC_NAME ": mkdir %s: %s\n",
284 name, strerror(errno));
285 exit_cleanup(RERR_FILEIO);
288 rprintf(FINFO,"created directory %s\n",name);
291 if (!push_dir(name, 0)) {
292 rprintf(FERROR, RSYNC_NAME ": push_dir %s: %s\n",
293 name, strerror(errno));
294 exit_cleanup(RERR_FILESELECT);
303 static void do_server_sender(int f_in, int f_out, int argc,char *argv[])
306 struct file_list *flist;
308 extern int relative_paths;
310 extern int remote_version;
313 rprintf(FINFO,"server_sender starting pid=%d\n",(int)getpid());
315 if (!relative_paths && !push_dir(dir, 0)) {
316 rprintf(FERROR,"push_dir %s: %s (3)\n",dir,strerror(errno));
317 exit_cleanup(RERR_FILESELECT);
322 if (strcmp(dir,".")) {
324 if (strcmp(dir,"/") == 0)
330 if (argc == 0 && recurse) {
336 flist = send_file_list(f_out,argc,argv);
337 if (!flist || flist->count == 0) {
341 send_files(flist,f_out,f_in);
344 if (remote_version >= 24) {
345 /* final goodbye message */
353 static int do_recv(int f_in,int f_out,struct file_list *flist,char *local_name)
359 extern int preserve_hard_links;
360 extern int delete_after;
362 extern int delete_mode;
363 extern int remote_version;
365 if (preserve_hard_links)
366 init_hard_links(flist);
369 /* I moved this here from recv_files() to prevent a race condition */
370 if (recurse && delete_mode && !local_name && flist->count>0) {
375 if (fd_pair(recv_pipe) < 0) {
376 rprintf(FERROR,"pipe failed in do_recv\n");
377 exit_cleanup(RERR_SOCKETIO);
380 if (fd_pair(error_pipe) < 0) {
381 rprintf(FERROR,"error pipe failed in do_recv\n");
382 exit_cleanup(RERR_SOCKETIO);
387 if ((pid=do_fork()) == 0) {
389 close(error_pipe[0]);
390 if (f_in != f_out) close(f_out);
392 /* we can't let two processes write to the socket at one time */
393 io_multiplexing_close();
395 /* set place to send errors */
396 set_error_fd(error_pipe[1]);
398 recv_files(f_in,flist,local_name,recv_pipe[1]);
402 write_int(recv_pipe[1],1);
405 /* finally we go to sleep until our parent kills us
406 with a USR2 signal. We sleep for a short time as on
407 some OSes a signal won't interrupt a sleep! */
413 close(error_pipe[1]);
414 if (f_in != f_out) close(f_in);
416 io_start_buffering(f_out);
418 io_set_error_fd(error_pipe[0]);
420 generate_files(f_out,flist,local_name,recv_pipe[0]);
422 read_int(recv_pipe[0]);
424 if (remote_version >= 24) {
425 /* send a final goodbye message */
426 write_int(f_out, -1);
431 wait_process(pid, &status);
436 static void do_server_recv(int f_in, int f_out, int argc,char *argv[])
439 struct file_list *flist;
440 char *local_name=NULL;
442 extern int delete_mode;
443 extern int delete_excluded;
444 extern int am_daemon;
445 extern int module_id;
446 extern int am_sender;
447 extern int read_batch;
448 extern struct file_list *batch_flist;
451 rprintf(FINFO,"server_recv(%d) starting pid=%d\n",argc,(int)getpid());
453 if (am_daemon && lp_read_only(module_id) && !am_sender) {
454 rprintf(FERROR,"ERROR: module is read only\n");
455 exit_cleanup(RERR_SYNTAX);
464 if (!am_daemon && !push_dir(dir, 0)) {
465 rprintf(FERROR,"push_dir %s : %s (4)\n",
466 dir,strerror(errno));
467 exit_cleanup(RERR_FILESELECT);
471 if (delete_mode && !delete_excluded)
472 recv_exclude_list(f_in);
477 flist = recv_file_list(f_in);
479 rprintf(FERROR,"server_recv: recv_file_list error\n");
480 exit_cleanup(RERR_FILESELECT);
484 if (strcmp(dir,".")) {
485 argv[0] += strlen(dir);
486 if (argv[0][0] == '/') argv[0]++;
488 local_name = get_local_name(flist,argv[0]);
491 status = do_recv(f_in,f_out,flist,local_name);
492 exit_cleanup(status);
496 void start_server(int f_in, int f_out, int argc, char *argv[])
498 extern int cvs_exclude;
499 extern int am_sender;
500 extern int remote_version;
501 extern int read_batch;
503 setup_protocol(f_out, f_in);
505 set_nonblocking(f_in);
506 set_nonblocking(f_out);
508 if (remote_version >= 23)
509 io_start_multiplex_out(f_out);
513 recv_exclude_list(f_in);
517 do_server_sender(f_in, f_out, argc, argv);
519 do_server_recv(f_in, f_out, argc, argv);
526 * This is called once the connection has been negotiated. It is used
527 * for rsyncd, remote-shell, and local connections.
529 int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[])
531 struct file_list *flist = NULL;
532 int status = 0, status2 = 0;
533 char *local_name = NULL;
534 extern int am_sender;
535 extern int remote_version;
536 extern pid_t cleanup_child_pid;
537 extern int write_batch;
538 extern int read_batch;
539 extern struct file_list *batch_flist;
541 cleanup_child_pid = pid;
545 set_nonblocking(f_in);
546 set_nonblocking(f_out);
548 setup_protocol(f_out,f_in);
550 if (remote_version >= 23)
551 io_start_multiplex_in(f_in);
554 extern int cvs_exclude;
555 extern int delete_mode;
556 extern int delete_excluded;
559 if (delete_mode && !delete_excluded)
560 send_exclude_list(f_out);
561 if (!read_batch) /* dw -- don't write to pipe */
562 flist = send_file_list(f_out,argc,argv);
564 rprintf(FINFO,"file list sent\n");
566 send_files(flist,f_out,f_in);
567 if (remote_version >= 24) {
568 /* final goodbye message */
573 rprintf(FINFO,"client_run waiting on %d\n", (int) pid);
575 wait_process(pid, &status);
578 exit_cleanup(status);
582 extern int list_only;
587 send_exclude_list(f_out);
589 flist = recv_file_list(f_in);
590 if (!flist || flist->count == 0) {
591 rprintf(FINFO, "client: nothing to do: "
592 "perhaps you need to specify some filenames or "
593 "the --recursive option?\n");
597 local_name = get_local_name(flist,argv[0]);
599 status2 = do_recv(f_in,f_out,flist,local_name);
603 rprintf(FINFO,"client_run2 waiting on %d\n", (int) pid);
605 wait_process(pid, &status);
608 return MAX(status, status2);
611 static char *find_colon(char *s)
618 /* now check to see if there is a / in the string before the : - if there is then
619 discard the colon on the assumption that the : is part of a filename */
621 if (p2 && p2 < p) return NULL;
627 static int copy_argv (char *argv[])
631 for (i = 0; argv[i]; i++) {
632 if (!(argv[i] = strdup(argv[i]))) {
633 rprintf (FERROR, "out of memory at %s(%d)\n",
644 * Start a client for either type of remote connection. Work out
645 * whether the arguments request a remote shell or rsyncd connection,
646 * and call the appropriate connection function, then run_client.
648 static int start_client(int argc, char *argv[])
651 char *shell_machine = NULL;
652 char *shell_path = NULL;
653 char *shell_user = NULL;
657 extern int local_server;
658 extern int am_sender;
659 extern char *shell_cmd;
660 extern int rsync_port;
661 extern int whole_file;
662 extern int write_batch;
663 extern int read_batch;
666 /* Don't clobber argv[] so that ps(1) can still show the right
668 if ((rc = copy_argv (argv)))
671 if (strncasecmp(URL_PREFIX, argv[0], strlen(URL_PREFIX)) == 0) {
674 host = argv[0] + strlen(URL_PREFIX);
675 p = strchr(host,'/');
682 p = strchr(host,':');
684 rsync_port = atoi(p+1);
687 return start_socket_client(host, path, argc-1, argv+1);
691 p = find_colon(argv[0]);
696 return start_socket_client(argv[0], p+2, argc-1, argv+1);
701 exit_cleanup(RERR_SYNTAX);
706 shell_machine = argv[0];
713 p = find_colon(argv[argc-1]);
717 * disable "rsync algorithm" when both sides local,
718 * except when creating a batch update
720 if (!write_batch && whole_file == -1)
722 } else if (p[1] == ':') {
724 return start_socket_client(argv[argc-1], p+2, argc-1, argv);
729 exit_cleanup(RERR_SYNTAX);
733 shell_machine = NULL;
734 shell_path = argv[argc-1];
737 shell_machine = argv[argc-1];
745 shell_path = argv[argc-1];
749 p = strchr(shell_machine,'@');
752 shell_user = shell_machine;
758 rprintf(FINFO,"cmd=%s machine=%s user=%s path=%s\n",
759 shell_cmd?shell_cmd:"",
760 shell_machine?shell_machine:"",
761 shell_user?shell_user:"",
762 shell_path?shell_path:"");
765 if (!am_sender && argc > 1) {
767 exit_cleanup(RERR_SYNTAX);
770 if (argc == 0 && !am_sender) {
771 extern int list_only;
775 pid = do_cmd(shell_cmd,shell_machine,shell_user,shell_path,&f_in,&f_out);
777 ret = client_run(f_in, f_out, pid, argc, argv);
786 static RETSIGTYPE sigusr1_handler(int val) {
787 exit_cleanup(RERR_SIGNAL);
790 static RETSIGTYPE sigusr2_handler(int val) {
791 extern int log_got_error;
792 if (log_got_error) _exit(RERR_PARTIAL);
796 static RETSIGTYPE sigchld_handler(int val) {
798 while (waitpid(-1, NULL, WNOHANG) > 0) ;
802 int main(int argc,char *argv[])
805 extern int orig_umask;
807 extern int am_daemon;
808 extern int am_server;
810 extern int write_batch;
817 signal(SIGUSR1, sigusr1_handler);
818 signal(SIGUSR2, sigusr2_handler);
819 signal(SIGCHLD, sigchld_handler);
821 starttime = time(NULL);
822 am_root = (getuid() == 0);
824 memset(&stats, 0, sizeof(stats));
828 exit_cleanup(RERR_SYNTAX);
831 /* we set a 0 umask so that correct file permissions can be
833 orig_umask = (int)umask(0);
835 if (!parse_arguments(&argc, (const char ***) &argv, 1)) {
836 /* FIXME: We ought to call the same error-handling
837 * code here, rather than relying on getopt. */
839 exit_cleanup(RERR_SYNTAX);
842 signal(SIGINT,SIGNAL_CAST sig_int);
843 signal(SIGHUP,SIGNAL_CAST sig_int);
844 signal(SIGTERM,SIGNAL_CAST sig_int);
846 /* Ignore SIGPIPE; we consistently check error codes and will
848 signal(SIGPIPE, SIG_IGN);
850 /* Initialize push_dir here because on some old systems getcwd
851 (implemented by forking "pwd" and reading its output) doesn't
852 work when there are other child processes. Also, on all systems
853 that implement getcwd that way "pwd" can't be found after chroot. */
856 if (write_batch && !am_server) {
857 write_batch_argvs_file(orig_argc, orig_argv);
861 return daemon_main();
866 exit_cleanup(RERR_SYNTAX);
870 verbose = MAX(verbose,1);
872 #ifndef SUPPORT_LINKS
873 if (!am_server && preserve_links) {
874 rprintf(FERROR,"ERROR: symbolic links not supported\n");
875 exit_cleanup(RERR_UNSUPPORTED);
880 set_nonblocking(STDIN_FILENO);
881 set_nonblocking(STDOUT_FILENO);
882 start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv);
885 ret = start_client(argc, argv);
887 exit_cleanup(RERR_STARTCLIENT);