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.
26 extern struct stats stats;
29 static void show_malloc_stats(void);
31 /****************************************************************************
32 wait for a process to exit, calling io_flush while waiting
33 ****************************************************************************/
34 void wait_process(pid_t pid, int *status)
36 while (waitpid(pid, status, WNOHANG) == 0) {
41 /* TODO: If the child exited on a signal, then log an
42 * appropriate error message. Perhaps we should also accept a
43 * message describing the purpose of the child. Also indicate
44 * this to the caller so that thhey know something went
46 *status = WEXITSTATUS(*status);
49 static void report(int f)
51 time_t t = time(NULL);
56 extern int remote_version;
60 /* These come out from every process */
66 log_exit(0, __FILE__, __LINE__);
67 if (f == -1 || !am_sender) return;
70 send_stats = verbose || (remote_version >= 20);
72 if (am_sender && send_stats) {
74 /* store total_written in a temporary
75 because write_longint changes it */
76 w = stats.total_written;
77 write_longint(f,stats.total_read);
79 write_longint(f,stats.total_size);
84 /* this is the client */
86 if (!am_sender && send_stats) {
88 stats.total_written = read_longint(f);
89 /* store total_read in a temporary, read_longint changes it */
91 stats.total_size = read_longint(f);
96 if (!am_sender && !send_stats) {
97 /* missing the bytes written by the generator */
98 rprintf(FINFO, "\nCannot show stats as receiver because remote protocol version is less than 20\n");
99 rprintf(FINFO, "Use --stats -v to show stats\n");
102 rprintf(FINFO,"\nNumber of files: %d\n", stats.num_files);
103 rprintf(FINFO,"Number of files transferred: %d\n",
104 stats.num_transferred_files);
105 rprintf(FINFO,"Total file size: %.0f bytes\n",
106 (double)stats.total_size);
107 rprintf(FINFO,"Total transferred file size: %.0f bytes\n",
108 (double)stats.total_transferred_size);
109 rprintf(FINFO,"Literal data: %.0f bytes\n",
110 (double)stats.literal_data);
111 rprintf(FINFO,"Matched data: %.0f bytes\n",
112 (double)stats.matched_data);
113 rprintf(FINFO,"File list size: %d\n", stats.flist_size);
114 rprintf(FINFO,"Total bytes written: %.0f\n",
115 (double)stats.total_written);
116 rprintf(FINFO,"Total bytes read: %.0f\n\n",
117 (double)stats.total_read);
120 if (verbose || do_stats) {
121 rprintf(FINFO,"wrote %.0f bytes read %.0f bytes %.2f bytes/sec\n",
122 (double)stats.total_written,
123 (double)stats.total_read,
124 (stats.total_written+stats.total_read)/(0.5 + (t-starttime)));
125 rprintf(FINFO,"total size is %.0f speedup is %.2f\n",
126 (double)stats.total_size,
127 (1.0*stats.total_size)/(stats.total_written+stats.total_read));
136 * If our C library can get malloc statistics, then show them to FINFO
138 static void show_malloc_stats(void)
142 extern int am_server;
143 extern int am_sender;
144 extern int am_daemon;
148 rprintf(FINFO, RSYNC_NAME "[%d] (%s%s%s) heap statistics:\n",
150 am_server ? "server " : "",
151 am_daemon ? "daemon " : "",
152 am_sender ? "sender" : "receiver");
153 rprintf(FINFO, " arena: %10d (bytes from sbrk)\n", mi.arena);
154 rprintf(FINFO, " ordblks: %10d (chunks not in use)\n", mi.ordblks);
155 rprintf(FINFO, " smblks: %10d\n", mi.smblks);
156 rprintf(FINFO, " hblks: %10d (chunks from mmap)\n", mi.hblks);
157 rprintf(FINFO, " hblkhd: %10d (bytes from mmap)\n", mi.hblkhd);
158 rprintf(FINFO, " usmblks: %10d\n", mi.usmblks);
159 rprintf(FINFO, " fsmblks: %10d\n", mi.fsmblks);
160 rprintf(FINFO, " uordblks: %10d (bytes used)\n", mi.uordblks);
161 rprintf(FINFO, " fordblks: %10d (bytes free)\n", mi.fordblks);
162 rprintf(FINFO, " keepcost: %10d (bytes in releasable chunk)\n", mi.keepcost);
163 #endif /* HAVE_MALLINFO */
167 /* Start the remote shell. cmd may be NULL to use the default. */
168 static pid_t do_cmd(char *cmd,char *machine,char *user,char *path,int *f_in,int *f_out)
174 extern int local_server;
175 extern char *rsync_path;
176 extern int blocking_io;
177 extern int read_batch;
179 if (!read_batch && !local_server) {
181 cmd = getenv(RSYNC_RSH_ENV);
188 for (tok=strtok(cmd," ");tok;tok=strtok(NULL," ")) {
193 /* remsh (on HPUX) takes the arguments the other way around */
194 args[argc++] = machine;
204 args[argc++] = machine;
207 args[argc++] = rsync_path;
209 if ((blocking_io == -1) && (strcmp(cmd, RSYNC_RSH) == 0))
212 server_options(args,&argc);
224 rprintf(FINFO,"cmd=");
226 rprintf(FINFO,"%s ",args[i]);
232 create_flist_from_batch(); /* sets batch_flist */
233 ret = local_child(argc, args, f_in, f_out, child_main);
235 ret = piped_child(args,f_in,f_out);
243 out_of_memory("do_cmd");
244 return 0; /* not reached */
250 static char *get_local_name(struct file_list *flist,char *name)
253 extern int orig_umask;
256 rprintf(FINFO,"get_local_name count=%d %s\n",
257 flist->count, NS(name));
262 if (do_stat(name,&st) == 0) {
263 if (S_ISDIR(st.st_mode)) {
264 if (!push_dir(name, 0)) {
265 rprintf(FERROR,"push_dir %s : %s (1)\n",
266 name,strerror(errno));
267 exit_cleanup(RERR_FILESELECT);
271 if (flist->count > 1) {
272 rprintf(FERROR,"ERROR: destination must be a directory when copying more than 1 file\n");
273 exit_cleanup(RERR_FILESELECT);
278 if (flist->count <= 1)
281 if (do_mkdir(name,0777 & ~orig_umask) != 0) {
282 rprintf(FERROR, RSYNC_NAME ": mkdir %s: %s\n",
283 name, strerror(errno));
284 exit_cleanup(RERR_FILEIO);
287 rprintf(FINFO,"created directory %s\n",name);
290 if (!push_dir(name, 0)) {
291 rprintf(FERROR, RSYNC_NAME ": push_dir %s: %s\n",
292 name, strerror(errno));
293 exit_cleanup(RERR_FILESELECT);
302 static void do_server_sender(int f_in, int f_out, int argc,char *argv[])
305 struct file_list *flist;
307 extern int relative_paths;
309 extern int remote_version;
312 rprintf(FINFO,"server_sender starting pid=%d\n",(int)getpid());
314 if (!relative_paths && !push_dir(dir, 0)) {
315 rprintf(FERROR,"push_dir %s: %s (3)\n",dir,strerror(errno));
316 exit_cleanup(RERR_FILESELECT);
321 if (strcmp(dir,".")) {
323 if (strcmp(dir,"/") == 0)
329 if (argc == 0 && recurse) {
335 flist = send_file_list(f_out,argc,argv);
336 if (!flist || flist->count == 0) {
340 send_files(flist,f_out,f_in);
343 if (remote_version >= 24) {
344 /* final goodbye message */
352 static int do_recv(int f_in,int f_out,struct file_list *flist,char *local_name)
358 extern int preserve_hard_links;
359 extern int delete_after;
361 extern int delete_mode;
362 extern int remote_version;
364 if (preserve_hard_links)
365 init_hard_links(flist);
368 /* I moved this here from recv_files() to prevent a race condition */
369 if (recurse && delete_mode && !local_name && flist->count>0) {
374 if (fd_pair(recv_pipe) < 0) {
375 rprintf(FERROR,"pipe failed in do_recv\n");
376 exit_cleanup(RERR_SOCKETIO);
379 if (fd_pair(error_pipe) < 0) {
380 rprintf(FERROR,"error pipe failed in do_recv\n");
381 exit_cleanup(RERR_SOCKETIO);
386 if ((pid=do_fork()) == 0) {
388 close(error_pipe[0]);
389 if (f_in != f_out) close(f_out);
391 /* we can't let two processes write to the socket at one time */
392 io_multiplexing_close();
394 /* set place to send errors */
395 set_error_fd(error_pipe[1]);
397 recv_files(f_in,flist,local_name,recv_pipe[1]);
401 write_int(recv_pipe[1],1);
404 /* finally we go to sleep until our parent kills us
405 with a USR2 signal. We sleep for a short time as on
406 some OSes a signal won't interrupt a sleep! */
412 close(error_pipe[1]);
413 if (f_in != f_out) close(f_in);
415 io_start_buffering(f_out);
417 io_set_error_fd(error_pipe[0]);
419 generate_files(f_out,flist,local_name,recv_pipe[0]);
421 read_int(recv_pipe[0]);
423 if (remote_version >= 24) {
424 /* send a final goodbye message */
425 write_int(f_out, -1);
430 wait_process(pid, &status);
435 static void do_server_recv(int f_in, int f_out, int argc,char *argv[])
438 struct file_list *flist;
439 char *local_name=NULL;
441 extern int delete_mode;
442 extern int delete_excluded;
443 extern int am_daemon;
444 extern int module_id;
445 extern int am_sender;
446 extern int read_batch;
447 extern struct file_list *batch_flist;
450 rprintf(FINFO,"server_recv(%d) starting pid=%d\n",argc,(int)getpid());
452 if (am_daemon && lp_read_only(module_id) && !am_sender) {
453 rprintf(FERROR,"ERROR: module is read only\n");
454 exit_cleanup(RERR_SYNTAX);
463 if (!am_daemon && !push_dir(dir, 0)) {
464 rprintf(FERROR,"push_dir %s : %s (4)\n",
465 dir,strerror(errno));
466 exit_cleanup(RERR_FILESELECT);
470 if (delete_mode && !delete_excluded)
471 recv_exclude_list(f_in);
476 flist = recv_file_list(f_in);
478 rprintf(FERROR,"server_recv: recv_file_list error\n");
479 exit_cleanup(RERR_FILESELECT);
483 if (strcmp(dir,".")) {
484 argv[0] += strlen(dir);
485 if (argv[0][0] == '/') argv[0]++;
487 local_name = get_local_name(flist,argv[0]);
490 status = do_recv(f_in,f_out,flist,local_name);
491 exit_cleanup(status);
495 void child_main(int argc, char *argv[])
497 start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv);
501 void start_server(int f_in, int f_out, int argc, char *argv[])
503 extern int cvs_exclude;
504 extern int am_sender;
505 extern int remote_version;
506 extern int read_batch;
508 setup_protocol(f_out, f_in);
510 set_nonblocking(f_in);
511 set_nonblocking(f_out);
513 if (remote_version >= 23)
514 io_start_multiplex_out(f_out);
518 recv_exclude_list(f_in);
522 do_server_sender(f_in, f_out, argc, argv);
524 do_server_recv(f_in, f_out, argc, argv);
531 * This is called once the connection has been negotiated. It is used
532 * for rsyncd, remote-shell, and local connections.
534 int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[])
536 struct file_list *flist = NULL;
537 int status = 0, status2 = 0;
538 char *local_name = NULL;
539 extern int am_sender;
540 extern int remote_version;
541 extern pid_t cleanup_child_pid;
542 extern int write_batch;
543 extern int read_batch;
544 extern struct file_list *batch_flist;
546 cleanup_child_pid = pid;
550 set_nonblocking(f_in);
551 set_nonblocking(f_out);
553 setup_protocol(f_out,f_in);
555 if (remote_version >= 23)
556 io_start_multiplex_in(f_in);
559 extern int cvs_exclude;
560 extern int delete_mode;
561 extern int delete_excluded;
564 if (delete_mode && !delete_excluded)
565 send_exclude_list(f_out);
566 if (!read_batch) /* dw -- don't write to pipe */
567 flist = send_file_list(f_out,argc,argv);
569 rprintf(FINFO,"file list sent\n");
571 send_files(flist,f_out,f_in);
572 if (remote_version >= 24) {
573 /* final goodbye message */
578 rprintf(FINFO,"client_run waiting on %d\n", (int) pid);
580 wait_process(pid, &status);
583 exit_cleanup(status);
587 extern int list_only;
592 send_exclude_list(f_out);
594 flist = recv_file_list(f_in);
595 if (!flist || flist->count == 0) {
596 rprintf(FINFO, "client: nothing to do: "
597 "perhaps you need to specify some filenames or "
598 "the --recursive option?\n");
602 local_name = get_local_name(flist,argv[0]);
604 status2 = do_recv(f_in,f_out,flist,local_name);
608 rprintf(FINFO,"client_run2 waiting on %d\n", (int) pid);
610 wait_process(pid, &status);
613 return MAX(status, status2);
616 static char *find_colon(char *s)
623 /* now check to see if there is a / in the string before the : - if there is then
624 discard the colon on the assumption that the : is part of a filename */
626 if (p2 && p2 < p) return NULL;
632 static int copy_argv (char *argv[])
636 for (i = 0; argv[i]; i++) {
637 if (!(argv[i] = strdup(argv[i]))) {
638 rprintf (FERROR, "out of memory at %s(%d)\n",
649 * Start a client for either type of remote connection. Work out
650 * whether the arguments request a remote shell or rsyncd connection,
651 * and call the appropriate connection function, then run_client.
653 * Calls either start_socket_client (for sockets) or do_cmd and
654 * client_run (for ssh).
656 static int start_client(int argc, char *argv[])
659 char *shell_machine = NULL;
660 char *shell_path = NULL;
661 char *shell_user = NULL;
665 extern int local_server;
666 extern int am_sender;
667 extern char *shell_cmd;
668 extern int rsync_port;
669 extern int whole_file;
670 extern int write_batch;
671 extern int read_batch;
674 /* Don't clobber argv[] so that ps(1) can still show the right
676 if ((rc = copy_argv (argv)))
679 if (strncasecmp(URL_PREFIX, argv[0], strlen(URL_PREFIX)) == 0) {
682 host = argv[0] + strlen(URL_PREFIX);
683 p = strchr(host,'/');
690 p = strchr(host,':');
692 rsync_port = atoi(p+1);
695 return start_socket_client(host, path, argc-1, argv+1);
699 p = find_colon(argv[0]);
702 if (p[1] == ':') { /* double colon */
704 return start_socket_client(argv[0], p+2, argc-1, argv+1);
709 exit_cleanup(RERR_SYNTAX);
714 shell_machine = argv[0];
721 p = find_colon(argv[argc-1]);
724 } else if (p[1] == ':') {
726 return start_socket_client(argv[argc-1], p+2, argc-1, argv);
731 exit_cleanup(RERR_SYNTAX);
735 shell_machine = NULL;
736 shell_path = argv[argc-1];
739 shell_machine = argv[argc-1];
747 shell_path = argv[argc-1];
751 p = strchr(shell_machine,'@');
754 shell_user = shell_machine;
760 rprintf(FINFO,"cmd=%s machine=%s user=%s path=%s\n",
761 shell_cmd?shell_cmd:"",
762 shell_machine?shell_machine:"",
763 shell_user?shell_user:"",
764 shell_path?shell_path:"");
767 if (!am_sender && argc > 1) {
769 exit_cleanup(RERR_SYNTAX);
772 if (argc == 0 && !am_sender) {
773 extern int list_only;
777 pid = do_cmd(shell_cmd,shell_machine,shell_user,shell_path,&f_in,&f_out);
779 ret = client_run(f_in, f_out, pid, argc, argv);
788 static RETSIGTYPE sigusr1_handler(int UNUSED(val)) {
789 exit_cleanup(RERR_SIGNAL);
792 static RETSIGTYPE sigusr2_handler(int UNUSED(val)) {
793 extern int log_got_error;
794 if (log_got_error) _exit(RERR_PARTIAL);
798 static RETSIGTYPE sigchld_handler(int UNUSED(val)) {
800 while (waitpid(-1, NULL, WNOHANG) > 0) ;
806 * This routine catches signals and tries to send them to gdb.
808 * Because it's called from inside a signal handler it ought not to
809 * use too many library routines.
811 * @todo Perhaps use "screen -X" instead/as well, to help people
812 * debugging without easy access to X. Perhaps use an environment
813 * variable, or just call a script?
815 * @todo The /proc/ magic probably only works on Linux (and
816 * Solaris?) Can we be more portable?
818 #ifdef MAINTAINER_MODE
819 static RETSIGTYPE rsync_panic_handler(int UNUSED(whatsig))
824 "xterm -display :0 -T Panic -n Panic "
825 "-e gdb /proc/%d/exe %d",
828 /* Unless we failed to execute gdb, we allow the process to
829 * continue. I'm not sure if that's right. */
830 ret = system(cmd_buf);
837 int main(int argc,char *argv[])
840 extern int orig_umask;
842 extern int am_daemon;
843 extern int am_server;
845 extern int write_batch;
852 signal(SIGUSR1, sigusr1_handler);
853 signal(SIGUSR2, sigusr2_handler);
854 signal(SIGCHLD, sigchld_handler);
855 #ifdef MAINTAINER_MODE
856 signal(SIGSEGV, rsync_panic_handler);
857 signal(SIGFPE, rsync_panic_handler);
858 signal(SIGABRT, rsync_panic_handler);
859 signal(SIGBUS, rsync_panic_handler);
860 #endif /* def MAINTAINER_MODE */
862 starttime = time(NULL);
863 am_root = (getuid() == 0);
865 memset(&stats, 0, sizeof(stats));
869 exit_cleanup(RERR_SYNTAX);
872 /* we set a 0 umask so that correct file permissions can be
874 orig_umask = (int)umask(0);
876 if (!parse_arguments(&argc, (const char ***) &argv, 1)) {
877 /* FIXME: We ought to call the same error-handling
878 * code here, rather than relying on getopt. */
880 exit_cleanup(RERR_SYNTAX);
883 signal(SIGINT,SIGNAL_CAST sig_int);
884 signal(SIGHUP,SIGNAL_CAST sig_int);
885 signal(SIGTERM,SIGNAL_CAST sig_int);
887 /* Ignore SIGPIPE; we consistently check error codes and will
889 signal(SIGPIPE, SIG_IGN);
891 /* Initialize push_dir here because on some old systems getcwd
892 (implemented by forking "pwd" and reading its output) doesn't
893 work when there are other child processes. Also, on all systems
894 that implement getcwd that way "pwd" can't be found after chroot. */
897 if (write_batch && !am_server) {
898 write_batch_argvs_file(orig_argc, orig_argv);
902 return daemon_main();
907 exit_cleanup(RERR_SYNTAX);
911 verbose = MAX(verbose,1);
913 #ifndef SUPPORT_LINKS
914 if (!am_server && preserve_links) {
915 rprintf(FERROR,"ERROR: symbolic links not supported\n");
916 exit_cleanup(RERR_UNSUPPORTED);
921 set_nonblocking(STDIN_FILENO);
922 set_nonblocking(STDOUT_FILENO);
923 start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv);
926 ret = start_client(argc, argv);
928 exit_cleanup(RERR_STARTCLIENT);