Commit | Line | Data |
---|---|---|
0f78b815 WD |
1 | /* |
2 | * The startup routines, including main(), for rsync. | |
3 | * | |
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, 2004, 2005, 2006 Wayne Davison | |
8 | * | |
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 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
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. | |
18 | * | |
e7c67065 WD |
19 | * You should have received a copy of the GNU General Public License along |
20 | * with this program; if not, write to the Free Software Foundation, Inc., | |
21 | * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. | |
0f78b815 | 22 | */ |
c627d613 AT |
23 | |
24 | #include "rsync.h" | |
d9401514 WD |
25 | #if defined CONFIG_LOCALE && defined HAVE_LOCALE_H |
26 | #include <locale.h> | |
27 | #endif | |
c627d613 | 28 | |
50839b4b WD |
29 | extern int verbose; |
30 | extern int dry_run; | |
31 | extern int list_only; | |
32eda096 | 32 | extern int am_root; |
d9c7edf6 WD |
33 | extern int am_server; |
34 | extern int am_sender; | |
b695f242 | 35 | extern int am_generator; |
d9c7edf6 | 36 | extern int am_daemon; |
32eda096 | 37 | extern int blocking_io; |
bf26aa22 | 38 | extern int remove_sent_files; |
32eda096 | 39 | extern int daemon_over_rsh; |
bf26aa22 | 40 | extern int need_messages_from_generator; |
051182cb | 41 | extern int kluge_around_eof; |
32eda096 | 42 | extern int do_stats; |
32eda096 WD |
43 | extern int log_got_error; |
44 | extern int module_id; | |
bb6721dc | 45 | extern int copy_links; |
a695b379 | 46 | extern int copy_dirlinks; |
83926d3c | 47 | extern int keep_dirlinks; |
32eda096 | 48 | extern int preserve_hard_links; |
d04e9c51 | 49 | extern int protocol_version; |
32eda096 WD |
50 | extern int recurse; |
51 | extern int relative_paths; | |
7c58c991 | 52 | extern int sanitize_paths; |
c2a2147a | 53 | extern int curr_dir_depth; |
7c58c991 | 54 | extern int module_id; |
32eda096 | 55 | extern int rsync_port; |
b1df18d7 | 56 | extern int whole_file; |
32eda096 WD |
57 | extern int read_batch; |
58 | extern int write_batch; | |
b9f592fb | 59 | extern int batch_fd; |
c0d8e84c | 60 | extern int batch_gen_fd; |
32eda096 WD |
61 | extern int filesfrom_fd; |
62 | extern pid_t cleanup_child_pid; | |
50839b4b | 63 | extern struct stats stats; |
860236bf | 64 | extern char *filesfrom_host; |
c2c8db91 | 65 | extern char *partial_dir; |
7c58c991 | 66 | extern char *basis_dir[]; |
32eda096 WD |
67 | extern char *rsync_path; |
68 | extern char *shell_cmd; | |
9b3318b0 | 69 | extern char *batch_name; |
c2c8db91 | 70 | extern struct filter_list_struct server_filter_list; |
57dee64e WD |
71 | |
72 | int local_server = 0; | |
05278935 | 73 | mode_t orig_umask = 0; |
a00628b3 | 74 | struct file_list *the_file_list; |
c627d613 | 75 | |
91c5833b WD |
76 | /* There's probably never more than at most 2 outstanding child processes, |
77 | * but set it higher, just in case. */ | |
84e6d6fd | 78 | #define MAXCHILDPROCS 7 |
ee7118a8 | 79 | |
8261af74 WD |
80 | #ifdef HAVE_SIGACTION |
81 | # ifdef HAVE_SIGPROCMASK | |
82 | # define SIGACTMASK(n,h) SIGACTION(n,h), sigaddset(&sigmask,(n)) | |
83 | # else | |
84 | # define SIGACTMASK(n,h) SIGACTION(n,h) | |
85 | # endif | |
60ee01f5 WD |
86 | static struct sigaction sigact; |
87 | #endif | |
88 | ||
ee7118a8 DD |
89 | struct pid_status { |
90 | pid_t pid; | |
84e6d6fd | 91 | int status; |
ee7118a8 DD |
92 | } pid_stat_table[MAXCHILDPROCS]; |
93 | ||
33c4b445 WD |
94 | static time_t starttime, endtime; |
95 | static int64 total_read, total_written; | |
96 | ||
e5a2b854 | 97 | static void show_malloc_stats(void); |
82980a23 | 98 | |
97d8e709 | 99 | /* Works like waitpid(), but if we already harvested the child pid in our |
6d59ac19 | 100 | * remember_children(), we succeed instead of returning an error. */ |
97d8e709 | 101 | pid_t wait_process(pid_t pid, int *status_ptr, int flags) |
82980a23 | 102 | { |
97d8e709 | 103 | pid_t waited_pid = waitpid(pid, status_ptr, flags); |
d9c7edf6 | 104 | |
6fb812f7 | 105 | if (waited_pid == -1 && errno == ECHILD) { |
97d8e709 | 106 | /* Status of requested child no longer available: check to |
6d59ac19 | 107 | * see if it was processed by remember_children(). */ |
97d8e709 | 108 | int cnt; |
84e6d6fd | 109 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { |
ee7118a8 | 110 | if (pid == pid_stat_table[cnt].pid) { |
97d8e709 | 111 | *status_ptr = pid_stat_table[cnt].status; |
ee7118a8 | 112 | pid_stat_table[cnt].pid = 0; |
97d8e709 | 113 | return pid; |
ee7118a8 DD |
114 | } |
115 | } | |
116 | } | |
117 | ||
97d8e709 WD |
118 | return waited_pid; |
119 | } | |
120 | ||
121 | /* Wait for a process to exit, calling io_flush while waiting. */ | |
84e6d6fd | 122 | static void wait_process_with_flush(pid_t pid, int *exit_code_ptr) |
97d8e709 WD |
123 | { |
124 | pid_t waited_pid; | |
125 | int status; | |
126 | ||
127 | while ((waited_pid = wait_process(pid, &status, WNOHANG)) == 0) { | |
128 | msleep(20); | |
129 | io_flush(FULL_FLUSH); | |
130 | } | |
131 | ||
d9c7edf6 WD |
132 | /* TODO: If the child exited on a signal, then log an |
133 | * appropriate error message. Perhaps we should also accept a | |
134 | * message describing the purpose of the child. Also indicate | |
dbefb6b4 | 135 | * this to the caller so that they know something went wrong. */ |
84e6d6fd WD |
136 | if (waited_pid < 0) { |
137 | rsyserr(FERROR, errno, "waitpid"); | |
138 | *exit_code_ptr = RERR_WAITCHILD; | |
139 | } else if (!WIFEXITED(status)) { | |
40e6752f | 140 | #ifdef WCOREDUMP |
dbefb6b4 | 141 | if (WCOREDUMP(status)) |
84e6d6fd | 142 | *exit_code_ptr = RERR_CRASHED; |
40e6752f WD |
143 | else |
144 | #endif | |
145 | if (WIFSIGNALED(status)) | |
84e6d6fd | 146 | *exit_code_ptr = RERR_TERMINATED; |
dbefb6b4 | 147 | else |
84e6d6fd | 148 | *exit_code_ptr = RERR_WAITCHILD; |
dbefb6b4 | 149 | } else |
84e6d6fd | 150 | *exit_code_ptr = WEXITSTATUS(status); |
82980a23 AT |
151 | } |
152 | ||
b9f592fb WD |
153 | /* This function gets called from all 3 processes. We want the client side |
154 | * to actually output the text, but the sender is the only process that has | |
155 | * all the stats we need. So, if we're a client sender, we do the report. | |
156 | * If we're a server sender, we write the stats on the supplied fd. If | |
157 | * we're the client receiver we read the stats from the supplied fd and do | |
158 | * the report. All processes might also generate a set of debug stats, if | |
159 | * the verbose level is high enough (this is the only thing that the | |
160 | * generator process and the server receiver ever do here). */ | |
33c4b445 | 161 | static void handle_stats(int f) |
c627d613 | 162 | { |
33c4b445 WD |
163 | endtime = time(NULL); |
164 | ||
b9f592fb | 165 | /* Cache two stats because the read/write code can change it. */ |
33c4b445 WD |
166 | total_read = stats.total_read; |
167 | total_written = stats.total_written; | |
7a6421fa | 168 | |
7bb7058e | 169 | if (do_stats && verbose > 1) { |
5c15e29f | 170 | /* These come out from every process */ |
7bb7058e | 171 | show_malloc_stats(); |
86943126 | 172 | show_flist_stats(); |
5c15e29f MP |
173 | } |
174 | ||
e5fbaa71 S |
175 | if (am_generator) |
176 | return; | |
177 | ||
248fbb8c | 178 | if (am_daemon) { |
83926d3c WD |
179 | if (f == -1 || !am_sender) |
180 | return; | |
248fbb8c AT |
181 | } |
182 | ||
e19452a9 | 183 | if (am_server) { |
3e491682 | 184 | if (am_sender) { |
b9f592fb WD |
185 | write_longint(f, total_read); |
186 | write_longint(f, total_written); | |
187 | write_longint(f, stats.total_size); | |
f0f7e760 WD |
188 | if (protocol_version >= 29) { |
189 | write_longint(f, stats.flist_buildtime); | |
190 | write_longint(f, stats.flist_xfertime); | |
191 | } | |
e19452a9 | 192 | } |
7a6421fa AT |
193 | return; |
194 | } | |
e19452a9 DD |
195 | |
196 | /* this is the client */ | |
d9c7edf6 | 197 | |
9d19f8a5 | 198 | if (f < 0 && !am_sender) /* e.g. when we got an empty file list. */ |
0f78b815 | 199 | ; |
9d19f8a5 | 200 | else if (!am_sender) { |
58c5c245 WD |
201 | /* Read the first two in opposite order because the meaning of |
202 | * read/write swaps when switching from sender to receiver. */ | |
b9f592fb WD |
203 | total_written = read_longint(f); |
204 | total_read = read_longint(f); | |
a800434a | 205 | stats.total_size = read_longint(f); |
f0f7e760 WD |
206 | if (protocol_version >= 29) { |
207 | stats.flist_buildtime = read_longint(f); | |
208 | stats.flist_xfertime = read_longint(f); | |
209 | } | |
e4676bb5 | 210 | } else if (write_batch) { |
b9f592fb WD |
211 | /* The --read-batch process is going to be a client |
212 | * receiver, so we need to give it the stats. */ | |
213 | write_longint(batch_fd, total_read); | |
214 | write_longint(batch_fd, total_written); | |
215 | write_longint(batch_fd, stats.total_size); | |
f0f7e760 WD |
216 | if (protocol_version >= 29) { |
217 | write_longint(batch_fd, stats.flist_buildtime); | |
218 | write_longint(batch_fd, stats.flist_xfertime); | |
219 | } | |
a800434a | 220 | } |
e4676bb5 | 221 | } |
a800434a | 222 | |
e4676bb5 WD |
223 | static void output_summary(void) |
224 | { | |
a800434a | 225 | if (do_stats) { |
1f658d42 | 226 | rprintf(FINFO,"\nNumber of files: %d\n", stats.num_files); |
d9c7edf6 WD |
227 | rprintf(FINFO,"Number of files transferred: %d\n", |
228 | stats.num_transferred_files); | |
60613dc8 WD |
229 | rprintf(FINFO,"Total file size: %s bytes\n", |
230 | human_num(stats.total_size)); | |
231 | rprintf(FINFO,"Total transferred file size: %s bytes\n", | |
232 | human_num(stats.total_transferred_size)); | |
233 | rprintf(FINFO,"Literal data: %s bytes\n", | |
234 | human_num(stats.literal_data)); | |
235 | rprintf(FINFO,"Matched data: %s bytes\n", | |
236 | human_num(stats.matched_data)); | |
1f658d42 | 237 | rprintf(FINFO,"File list size: %d\n", stats.flist_size); |
f0f7e760 WD |
238 | if (stats.flist_buildtime) { |
239 | rprintf(FINFO, | |
240 | "File list generation time: %.3f seconds\n", | |
241 | (double)stats.flist_buildtime / 1000); | |
242 | rprintf(FINFO, | |
243 | "File list transfer time: %.3f seconds\n", | |
244 | (double)stats.flist_xfertime / 1000); | |
245 | } | |
60613dc8 WD |
246 | rprintf(FINFO,"Total bytes sent: %s\n", |
247 | human_num(total_written)); | |
248 | rprintf(FINFO,"Total bytes received: %s\n", | |
249 | human_num(total_read)); | |
7a6421fa | 250 | } |
d9c7edf6 | 251 | |
e19452a9 | 252 | if (verbose || do_stats) { |
b9f592fb | 253 | rprintf(FINFO, |
60613dc8 WD |
254 | "\nsent %s bytes received %s bytes %s bytes/sec\n", |
255 | human_num(total_written), human_num(total_read), | |
256 | human_dnum((total_written + total_read)/(0.5 + (endtime - starttime)), 2)); | |
257 | rprintf(FINFO, "total size is %s speedup is %.2f\n", | |
258 | human_num(stats.total_size), | |
b9f592fb | 259 | (double)stats.total_size / (total_written+total_read)); |
e19452a9 | 260 | } |
fc8a6b97 AT |
261 | |
262 | fflush(stdout); | |
263 | fflush(stderr); | |
c627d613 AT |
264 | } |
265 | ||
266 | ||
e5a2b854 MP |
267 | /** |
268 | * If our C library can get malloc statistics, then show them to FINFO | |
269 | **/ | |
270 | static void show_malloc_stats(void) | |
271 | { | |
4f5b0756 | 272 | #ifdef HAVE_MALLINFO |
e5a2b854 MP |
273 | struct mallinfo mi; |
274 | ||
275 | mi = mallinfo(); | |
276 | ||
ce672562 | 277 | rprintf(FINFO, "\n" RSYNC_NAME "[%d] (%s%s%s) heap statistics:\n", |
f846a9bf WD |
278 | getpid(), am_server ? "server " : "", |
279 | am_daemon ? "daemon " : "", who_am_i()); | |
280 | rprintf(FINFO, " arena: %10ld (bytes from sbrk)\n", | |
281 | (long)mi.arena); | |
282 | rprintf(FINFO, " ordblks: %10ld (chunks not in use)\n", | |
283 | (long)mi.ordblks); | |
284 | rprintf(FINFO, " smblks: %10ld\n", | |
285 | (long)mi.smblks); | |
286 | rprintf(FINFO, " hblks: %10ld (chunks from mmap)\n", | |
287 | (long)mi.hblks); | |
288 | rprintf(FINFO, " hblkhd: %10ld (bytes from mmap)\n", | |
289 | (long)mi.hblkhd); | |
290 | rprintf(FINFO, " allmem: %10ld (bytes from sbrk + mmap)\n", | |
291 | (long)mi.arena + mi.hblkhd); | |
292 | rprintf(FINFO, " usmblks: %10ld\n", | |
293 | (long)mi.usmblks); | |
294 | rprintf(FINFO, " fsmblks: %10ld\n", | |
295 | (long)mi.fsmblks); | |
296 | rprintf(FINFO, " uordblks: %10ld (bytes used)\n", | |
297 | (long)mi.uordblks); | |
298 | rprintf(FINFO, " fordblks: %10ld (bytes free)\n", | |
299 | (long)mi.fordblks); | |
300 | rprintf(FINFO, " keepcost: %10ld (bytes in releasable chunk)\n", | |
301 | (long)mi.keepcost); | |
e5a2b854 MP |
302 | #endif /* HAVE_MALLINFO */ |
303 | } | |
304 | ||
305 | ||
0882faa2 | 306 | /* Start the remote shell. cmd may be NULL to use the default. */ |
6c2e5b56 WD |
307 | static pid_t do_cmd(char *cmd, char *machine, char *user, char *path, |
308 | int *f_in, int *f_out) | |
c627d613 | 309 | { |
6c2e5b56 | 310 | int i, argc = 0; |
887e553f | 311 | char *args[MAX_ARGS]; |
19b27a48 | 312 | pid_t ret; |
82f0c63e | 313 | char *dir = NULL; |
bb4aa89c | 314 | int dash_l_set = 0; |
366345fe | 315 | |
088aac85 | 316 | if (!read_batch && !local_server) { |
82f0c63e | 317 | char *t, *f, in_quote = '\0'; |
9af87151 | 318 | char *rsh_env = getenv(RSYNC_RSH_ENV); |
366345fe | 319 | if (!cmd) |
9af87151 | 320 | cmd = rsh_env; |
366345fe AT |
321 | if (!cmd) |
322 | cmd = RSYNC_RSH; | |
323 | cmd = strdup(cmd); | |
d9c7edf6 | 324 | if (!cmd) |
366345fe AT |
325 | goto oom; |
326 | ||
82f0c63e WD |
327 | for (t = f = cmd; *f; f++) { |
328 | if (*f == ' ') | |
329 | continue; | |
e7a392c7 | 330 | /* Comparison leaves rooms for server_options(). */ |
d8c4d6de | 331 | if (argc >= MAX_ARGS - MAX_SERVER_ARGS) { |
e7a392c7 | 332 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); |
887e553f WD |
333 | exit_cleanup(RERR_SYNTAX); |
334 | } | |
82f0c63e WD |
335 | args[argc++] = t; |
336 | while (*f != ' ' || in_quote) { | |
337 | if (!*f) { | |
338 | if (in_quote) { | |
339 | rprintf(FERROR, | |
340 | "Missing trailing-%c in remote-shell command.\n", | |
341 | in_quote); | |
342 | exit_cleanup(RERR_SYNTAX); | |
343 | } | |
344 | f--; | |
345 | break; | |
346 | } | |
347 | if (*f == '\'' || *f == '"') { | |
348 | if (!in_quote) { | |
349 | in_quote = *f++; | |
350 | continue; | |
351 | } | |
352 | if (*f == in_quote && *++f != in_quote) { | |
353 | in_quote = '\0'; | |
354 | continue; | |
355 | } | |
356 | } | |
357 | *t++ = *f++; | |
358 | } | |
359 | *t++ = '\0'; | |
887e553f | 360 | } |
c627d613 | 361 | |
d9c7edf6 | 362 | /* check to see if we've already been given '-l user' in |
9af87151 | 363 | * the remote-shell command */ |
bb4aa89c WD |
364 | for (i = 0; i < argc-1; i++) { |
365 | if (!strcmp(args[i], "-l") && args[i+1][0] != '-') | |
366 | dash_l_set = 1; | |
367 | } | |
368 | ||
4f5b0756 | 369 | #ifdef HAVE_REMSH |
366345fe AT |
370 | /* remsh (on HPUX) takes the arguments the other way around */ |
371 | args[argc++] = machine; | |
bb4aa89c | 372 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
373 | args[argc++] = "-l"; |
374 | args[argc++] = user; | |
375 | } | |
7b8356d0 | 376 | #else |
bb4aa89c | 377 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
378 | args[argc++] = "-l"; |
379 | args[argc++] = user; | |
380 | } | |
381 | args[argc++] = machine; | |
7b8356d0 | 382 | #endif |
c627d613 | 383 | |
366345fe | 384 | args[argc++] = rsync_path; |
c627d613 | 385 | |
9af87151 | 386 | if (blocking_io < 0) { |
90e22f4b WD |
387 | char *cp; |
388 | if ((cp = strrchr(cmd, '/')) != NULL) | |
389 | cp++; | |
390 | else | |
391 | cp = cmd; | |
392 | if (strcmp(cp, "rsh") == 0 || strcmp(cp, "remsh") == 0) | |
393 | blocking_io = 1; | |
66b71163 | 394 | } |
e384bfbd | 395 | |
93689aa5 | 396 | server_options(args,&argc); |
e7a392c7 WD |
397 | |
398 | if (argc >= MAX_ARGS - 2) { | |
399 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
400 | exit_cleanup(RERR_SYNTAX); | |
401 | } | |
366345fe | 402 | } |
c627d613 | 403 | |
366345fe | 404 | args[argc++] = "."; |
76076c4b | 405 | |
d9c7edf6 | 406 | if (!daemon_over_rsh && path && *path) |
366345fe | 407 | args[argc++] = path; |
c627d613 | 408 | |
366345fe | 409 | args[argc] = NULL; |
c627d613 | 410 | |
366345fe | 411 | if (verbose > 3) { |
e7a392c7 | 412 | for (i = 0; i < argc; i++) |
45c49b52 | 413 | rprintf(FINFO, "cmd[%d]=%s ", i, args[i]); |
82f0c63e | 414 | rprintf(FINFO, "\n"); |
366345fe AT |
415 | } |
416 | ||
c0d8e84c WD |
417 | if (read_batch) { |
418 | int from_gen_pipe[2]; | |
419 | if (fd_pair(from_gen_pipe) < 0) { | |
420 | rsyserr(FERROR, errno, "pipe"); | |
421 | exit_cleanup(RERR_IPC); | |
422 | } | |
423 | batch_gen_fd = from_gen_pipe[0]; | |
424 | *f_out = from_gen_pipe[1]; | |
425 | *f_in = batch_fd; | |
426 | ret = -1; /* no child pid */ | |
427 | } else if (local_server) { | |
b1df18d7 WD |
428 | /* If the user didn't request --[no-]whole-file, force |
429 | * it on, but only if we're not batch processing. */ | |
c0d8e84c | 430 | if (whole_file < 0 && !write_batch) |
b1df18d7 | 431 | whole_file = 1; |
25d34a5c | 432 | ret = local_child(argc, args, f_in, f_out, child_main); |
c0d8e84c | 433 | } else |
366345fe | 434 | ret = piped_child(args,f_in,f_out); |
c627d613 | 435 | |
3a69fad0 WD |
436 | if (dir) |
437 | free(dir); | |
82306bf6 | 438 | |
366345fe | 439 | return ret; |
c627d613 | 440 | |
acee11fc | 441 | oom: |
366345fe AT |
442 | out_of_memory("do_cmd"); |
443 | return 0; /* not reached */ | |
c627d613 AT |
444 | } |
445 | ||
eb598fac WD |
446 | /* The receiving side operates in one of two modes: |
447 | * | |
cc8c5057 WD |
448 | * 1. it receives any number of files into a destination directory, |
449 | * placing them according to their names in the file-list. | |
eb598fac WD |
450 | * |
451 | * 2. it receives a single file and saves it using the name in the | |
452 | * destination path instead of its file-list name. This requires a | |
453 | * "local name" for writing out the destination file. | |
454 | * | |
455 | * So, our task is to figure out what mode/local-name we need and return | |
456 | * either a NULL for mode 1, or the local-name for mode 2. We also | |
457 | * change directory if there are any path components in dest_path. */ | |
458 | static char *get_local_name(struct file_list *flist, char *dest_path) | |
c627d613 | 459 | { |
7a6421fa | 460 | STRUCT_STAT st; |
eb598fac | 461 | char *cp; |
c627d613 | 462 | |
eb598fac WD |
463 | if (verbose > 2) { |
464 | rprintf(FINFO, "get_local_name count=%d %s\n", | |
465 | flist->count, NS(dest_path)); | |
466 | } | |
1f0610ef | 467 | |
ee8e2b15 | 468 | if (!dest_path || list_only) |
1f0610ef | 469 | return NULL; |
c95da96a | 470 | |
eb598fac WD |
471 | /* If the destination path refers to an existing directory, enter |
472 | * it and use mode 1. If there is something other than a directory | |
473 | * at the destination path, we must be transferring one file | |
474 | * (anything at the destination will be overwritten). */ | |
c2a2147a | 475 | if (safe_stat(dest_path, &st) == 0) { |
1ff5450d | 476 | if (S_ISDIR(st.st_mode)) { |
582c1589 WD |
477 | if (sanitize_paths) |
478 | die_on_unsafe_path(dest_path, 0); | |
eb598fac | 479 | if (!push_dir(dest_path)) { |
982e05bb | 480 | rsyserr(FERROR, errno, "push_dir#1 %s failed", |
eb598fac | 481 | full_fname(dest_path)); |
65417579 | 482 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
483 | } |
484 | return NULL; | |
485 | } | |
582c1589 WD |
486 | if (sanitize_paths && S_ISLNK(st.st_mode)) |
487 | die_on_unsafe_path(dest_path, 0); | |
1ff5450d | 488 | if (flist->count > 1) { |
eb598fac WD |
489 | rprintf(FERROR, |
490 | "ERROR: destination must be a directory when" | |
491 | " copying more than 1 file\n"); | |
65417579 | 492 | exit_cleanup(RERR_FILESELECT); |
1ff5450d | 493 | } |
44c26bf2 WD |
494 | /* Caution: flist->count could be 0! */ |
495 | if (flist->count == 1 && S_ISDIR(flist->files[0]->mode)) { | |
496 | rprintf(FERROR, | |
497 | "ERROR: cannot overwrite non-directory" | |
498 | " with a directory\n"); | |
499 | exit_cleanup(RERR_FILESELECT); | |
500 | } | |
cc8c5057 WD |
501 | } else if (errno != ENOENT) { |
502 | rsyserr(FERROR, errno, "cannot stat destination %s", | |
503 | full_fname(dest_path)); | |
504 | exit_cleanup(RERR_FILESELECT); | |
1ff5450d AT |
505 | } |
506 | ||
eb598fac WD |
507 | cp = strrchr(dest_path, '/'); |
508 | ||
509 | /* If the destination path ends in a slash or we are transferring | |
510 | * multiple files, create a directory at the destination path, | |
511 | * enter the new directory, and use mode 1. */ | |
512 | if (flist->count > 1 || (cp && !cp[1])) { | |
513 | /* Lop off the final slash (if any). */ | |
514 | if (cp && !cp[1]) | |
515 | *cp = '\0'; | |
516 | ||
05278935 | 517 | if (mkdir_defmode(dest_path) != 0) { |
eb598fac WD |
518 | rsyserr(FERROR, errno, "mkdir %s failed", |
519 | full_fname(dest_path)); | |
520 | exit_cleanup(RERR_FILEIO); | |
521 | } | |
1ff5450d | 522 | |
eb598fac WD |
523 | if (verbose) |
524 | rprintf(FINFO, "created directory %s\n", dest_path); | |
525 | ||
526 | if (dry_run) { | |
527 | /* Indicate that the destination directory doesn't | |
528 | * really exist and return mode 1. */ | |
529 | dry_run++; | |
530 | return NULL; | |
531 | } | |
532 | ||
582c1589 WD |
533 | if (sanitize_paths) |
534 | die_on_unsafe_path(dest_path, 0); | |
eb598fac WD |
535 | if (!push_dir(dest_path)) { |
536 | rsyserr(FERROR, errno, "push_dir#2 %s failed", | |
537 | full_fname(dest_path)); | |
538 | exit_cleanup(RERR_FILESELECT); | |
539 | } | |
e5a96f0f | 540 | |
e5a96f0f | 541 | return NULL; |
1ff5450d AT |
542 | } |
543 | ||
eb598fac WD |
544 | /* Otherwise, we are writing a single file, possibly on top of an |
545 | * existing non-directory. Change to the item's parent directory | |
546 | * (if it has a path component), return the basename of the | |
547 | * destination file as the local name, and use mode 2. */ | |
548 | if (!cp) | |
549 | return dest_path; | |
550 | ||
551 | if (cp == dest_path) | |
552 | dest_path = "/"; | |
553 | ||
554 | *cp = '\0'; | |
582c1589 WD |
555 | if (sanitize_paths) |
556 | die_on_unsafe_path(dest_path, 0); | |
eb598fac WD |
557 | if (!push_dir(dest_path)) { |
558 | rsyserr(FERROR, errno, "push_dir#3 %s failed", | |
559 | full_fname(dest_path)); | |
65417579 | 560 | exit_cleanup(RERR_FILESELECT); |
1ff5450d | 561 | } |
eb598fac | 562 | *cp = '/'; |
1ff5450d | 563 | |
eb598fac | 564 | return cp + 1; |
c627d613 AT |
565 | } |
566 | ||
567 | ||
1a8e5c97 | 568 | /* This is only called by the sender. */ |
3485ae83 | 569 | static void read_final_goodbye(int f_in, int f_out) |
4e0fcd85 | 570 | { |
1a8e5c97 WD |
571 | int i; |
572 | ||
573 | if (protocol_version < 29) | |
574 | i = read_int(f_in); | |
575 | else { | |
3485ae83 | 576 | while ((i = read_int(f_in)) == the_file_list->count |
1a8e5c97 WD |
577 | && read_shortint(f_in) == ITEM_IS_NEW) { |
578 | /* Forward the keep-alive (no-op) to the receiver. */ | |
3485ae83 | 579 | write_int(f_out, the_file_list->count); |
1a8e5c97 WD |
580 | write_shortint(f_out, ITEM_IS_NEW); |
581 | } | |
4e0fcd85 WD |
582 | } |
583 | ||
1a8e5c97 | 584 | if (i != -1) { |
c7791b8c WD |
585 | rprintf(FERROR, "Invalid packet at end of run (%d) [%s]\n", |
586 | i, who_am_i()); | |
1a8e5c97 | 587 | exit_cleanup(RERR_PROTOCOL); |
4e0fcd85 WD |
588 | } |
589 | } | |
590 | ||
591 | ||
eb598fac | 592 | static void do_server_sender(int f_in, int f_out, int argc, char *argv[]) |
c627d613 | 593 | { |
7a6421fa AT |
594 | struct file_list *flist; |
595 | char *dir = argv[0]; | |
c627d613 | 596 | |
45e08edb WD |
597 | if (verbose > 2) { |
598 | rprintf(FINFO, "server_sender starting pid=%ld\n", | |
599 | (long)getpid()); | |
600 | } | |
d9c7edf6 | 601 | |
2adbcdc7 | 602 | if (am_daemon && lp_write_only(module_id)) { |
7a92ded3 WD |
603 | rprintf(FERROR, "ERROR: module is write only\n"); |
604 | exit_cleanup(RERR_SYNTAX); | |
605 | return; | |
606 | } | |
bf26aa22 WD |
607 | if (am_daemon && lp_read_only(module_id) && remove_sent_files) { |
608 | rprintf(FERROR, | |
609 | "ERROR: --remove-sent-files cannot be used with a read-only module\n"); | |
610 | exit_cleanup(RERR_SYNTAX); | |
611 | return; | |
612 | } | |
7a92ded3 | 613 | |
582c1589 WD |
614 | if (!relative_paths) { |
615 | if (sanitize_paths) | |
616 | die_on_unsafe_path(dir, 0); | |
617 | if (!push_dir(dir)) { | |
618 | rsyserr(FERROR, errno, "push_dir#3 %s failed", | |
619 | full_fname(dir)); | |
620 | exit_cleanup(RERR_FILESELECT); | |
621 | } | |
7a6421fa AT |
622 | } |
623 | argc--; | |
624 | argv++; | |
d9c7edf6 | 625 | |
48a1ff0d | 626 | if (argc == 0 && (recurse || list_only)) { |
e1f67417 | 627 | argc = 1; |
7a6421fa AT |
628 | argv--; |
629 | argv[0] = "."; | |
630 | } | |
d9c7edf6 | 631 | |
7a6421fa | 632 | flist = send_file_list(f_out,argc,argv); |
8d9dc9f9 AT |
633 | if (!flist || flist->count == 0) { |
634 | exit_cleanup(0); | |
635 | } | |
a00628b3 | 636 | the_file_list = flist; |
8d9dc9f9 | 637 | |
da3478b2 WD |
638 | io_start_buffering_in(); |
639 | io_start_buffering_out(); | |
640 | ||
7a6421fa | 641 | send_files(flist,f_out,f_in); |
f1e3656e | 642 | io_flush(FULL_FLUSH); |
33c4b445 | 643 | handle_stats(f_out); |
4e0fcd85 | 644 | if (protocol_version >= 24) |
3485ae83 | 645 | read_final_goodbye(f_in, f_out); |
f1e3656e | 646 | io_flush(FULL_FLUSH); |
7a6421fa | 647 | exit_cleanup(0); |
c627d613 AT |
648 | } |
649 | ||
650 | ||
dc5ddbcc AT |
651 | static int do_recv(int f_in,int f_out,struct file_list *flist,char *local_name) |
652 | { | |
d186eb1a | 653 | int pid; |
84e6d6fd | 654 | int exit_code = 0; |
c70e07d9 | 655 | int error_pipe[2]; |
dc5ddbcc | 656 | |
bb6721dc WD |
657 | /* The receiving side mustn't obey this, or an existing symlink that |
658 | * points to an identical file won't be replaced by the referent. */ | |
a695b379 | 659 | copy_links = copy_dirlinks = 0; |
bb6721dc | 660 | |
d186eb1a | 661 | if (preserve_hard_links) |
3485ae83 | 662 | init_hard_links(); |
dc5ddbcc | 663 | |
c70e07d9 | 664 | if (fd_pair(error_pipe) < 0) { |
ab759cd2 | 665 | rsyserr(FERROR, errno, "pipe failed in do_recv"); |
c8f2f857 | 666 | exit_cleanup(RERR_IPC); |
554e0a8d | 667 | } |
d9c7edf6 | 668 | |
f1e3656e | 669 | io_flush(NORMAL_FLUSH); |
c6e7fcb4 | 670 | |
ba449e44 | 671 | if ((pid = do_fork()) == -1) { |
c8f2f857 | 672 | rsyserr(FERROR, errno, "fork failed in do_recv"); |
ba449e44 WD |
673 | exit_cleanup(RERR_IPC); |
674 | } | |
675 | ||
676 | if (pid == 0) { | |
554e0a8d | 677 | close(error_pipe[0]); |
3a69fad0 WD |
678 | if (f_in != f_out) |
679 | close(f_out); | |
e08c9610 | 680 | |
554e0a8d | 681 | /* we can't let two processes write to the socket at one time */ |
9eeb3b9c | 682 | close_multiplexing_out(); |
554e0a8d AT |
683 | |
684 | /* set place to send errors */ | |
f1e3656e | 685 | set_msg_fd_out(error_pipe[1]); |
554e0a8d | 686 | |
c70e07d9 | 687 | recv_files(f_in, flist, local_name); |
f1e3656e | 688 | io_flush(FULL_FLUSH); |
33c4b445 | 689 | handle_stats(f_in); |
e08c9610 | 690 | |
f1e3656e WD |
691 | send_msg(MSG_DONE, "", 0); |
692 | io_flush(FULL_FLUSH); | |
4e0fcd85 | 693 | |
40df65fd WD |
694 | /* Handle any keep-alive packets from the post-processing work |
695 | * that the generator does. */ | |
4e0fcd85 | 696 | if (protocol_version >= 29) { |
051182cb | 697 | kluge_around_eof = -1; |
1a8e5c97 WD |
698 | |
699 | /* This should only get stopped via a USR2 signal. */ | |
700 | while (read_int(f_in) == flist->count | |
701 | && read_shortint(f_in) == ITEM_IS_NEW) {} | |
702 | ||
3485ae83 WD |
703 | rprintf(FERROR, "Invalid packet at end of run [%s]\n", |
704 | who_am_i()); | |
1a8e5c97 | 705 | exit_cleanup(RERR_PROTOCOL); |
4e0fcd85 WD |
706 | } |
707 | ||
9e0582f9 WD |
708 | /* Finally, we go to sleep until our parent kills us with a |
709 | * USR2 signal. We sleep for a short time, as on some OSes | |
710 | * a signal won't interrupt a sleep! */ | |
f1e3656e WD |
711 | while (1) |
712 | msleep(20); | |
d186eb1a | 713 | } |
dc5ddbcc | 714 | |
b695f242 | 715 | am_generator = 1; |
9eeb3b9c | 716 | close_multiplexing_in(); |
e8a96e27 | 717 | if (write_batch && !am_server) |
b9f592fb | 718 | stop_write_batch(); |
b695f242 | 719 | |
554e0a8d | 720 | close(error_pipe[1]); |
3a69fad0 WD |
721 | if (f_in != f_out) |
722 | close(f_in); | |
e1b3d5c4 | 723 | |
da3478b2 | 724 | io_start_buffering_out(); |
b3e10ed7 | 725 | |
f1e3656e | 726 | set_msg_fd_in(error_pipe[0]); |
554e0a8d | 727 | |
c70e07d9 | 728 | generate_files(f_out, flist, local_name); |
8d9dc9f9 | 729 | |
33c4b445 | 730 | handle_stats(-1); |
f1e3656e | 731 | io_flush(FULL_FLUSH); |
d04e9c51 | 732 | if (protocol_version >= 24) { |
8ada7518 AT |
733 | /* send a final goodbye message */ |
734 | write_int(f_out, -1); | |
735 | } | |
f1e3656e | 736 | io_flush(FULL_FLUSH); |
8ada7518 | 737 | |
f1e3656e | 738 | set_msg_fd_in(-1); |
089a2435 | 739 | kill(pid, SIGUSR2); |
84e6d6fd WD |
740 | wait_process_with_flush(pid, &exit_code); |
741 | return exit_code; | |
dc5ddbcc AT |
742 | } |
743 | ||
c627d613 | 744 | |
9486289c | 745 | static void do_server_recv(int f_in, int f_out, int argc,char *argv[]) |
c627d613 | 746 | { |
84e6d6fd | 747 | int exit_code; |
7a6421fa | 748 | struct file_list *flist; |
6c2e5b56 | 749 | char *local_name = NULL; |
7a6421fa | 750 | char *dir = NULL; |
07bff66f WD |
751 | int save_verbose = verbose; |
752 | ||
753 | if (filesfrom_fd >= 0) { | |
754 | /* We can't mix messages with files-from data on the socket, | |
755 | * so temporarily turn off verbose messages. */ | |
756 | verbose = 0; | |
757 | } | |
f0fca04e | 758 | |
45e08edb WD |
759 | if (verbose > 2) { |
760 | rprintf(FINFO, "server_recv(%d) starting pid=%ld\n", | |
761 | argc, (long)getpid()); | |
762 | } | |
09b7f5db | 763 | |
2adbcdc7 | 764 | if (am_daemon && lp_read_only(module_id)) { |
09b7f5db AT |
765 | rprintf(FERROR,"ERROR: module is read only\n"); |
766 | exit_cleanup(RERR_SYNTAX); | |
767 | return; | |
768 | } | |
769 | ||
7a6421fa AT |
770 | if (argc > 0) { |
771 | dir = argv[0]; | |
772 | argc--; | |
773 | argv++; | |
59187666 | 774 | if (!am_daemon && !push_dir(dir)) { |
982e05bb WD |
775 | rsyserr(FERROR, errno, "push_dir#4 %s failed", |
776 | full_fname(dir)); | |
65417579 | 777 | exit_cleanup(RERR_FILESELECT); |
d9c7edf6 | 778 | } |
7a6421fa | 779 | } |
c627d613 | 780 | |
da3478b2 | 781 | io_start_buffering_in(); |
57dee64e | 782 | recv_filter_list(f_in); |
c627d613 | 783 | |
7c2a9e76 | 784 | if (filesfrom_fd >= 0) { |
07bff66f WD |
785 | /* We need to send the files-from names to the sender at the |
786 | * same time that we receive the file-list from them, so we | |
787 | * need the IO routines to automatically write out the names | |
788 | * onto our f_out socket as we read the file-list. This | |
789 | * avoids both deadlock and extra delays/buffers. */ | |
7c2a9e76 WD |
790 | io_set_filesfrom_fds(filesfrom_fd, f_out); |
791 | filesfrom_fd = -1; | |
792 | } | |
793 | ||
b9f592fb | 794 | flist = recv_file_list(f_in); |
07bff66f | 795 | verbose = save_verbose; |
4c36a13e AT |
796 | if (!flist) { |
797 | rprintf(FERROR,"server_recv: recv_file_list error\n"); | |
65417579 | 798 | exit_cleanup(RERR_FILESELECT); |
7a6421fa | 799 | } |
a00628b3 | 800 | the_file_list = flist; |
d9c7edf6 | 801 | |
29fad7a3 | 802 | if (argc > 0) |
7a6421fa | 803 | local_name = get_local_name(flist,argv[0]); |
c627d613 | 804 | |
7c58c991 WD |
805 | /* Now that we know what our destination directory turned out to be, |
806 | * we can sanitize the --link-/copy-/compare-dest args correctly. */ | |
807 | if (sanitize_paths) { | |
7c58c991 | 808 | char **dir; |
c2c8db91 | 809 | for (dir = basis_dir; *dir; dir++) { |
c2a2147a | 810 | *dir = sanitize_path(NULL, *dir, NULL, curr_dir_depth, NULL); |
c2c8db91 WD |
811 | die_on_unsafe_path(*dir, 0); |
812 | } | |
813 | if (partial_dir) { | |
814 | partial_dir = sanitize_path(NULL, partial_dir, NULL, curr_dir_depth, NULL); | |
815 | /* A relative path gets this checked at every dir change. */ | |
816 | if (*partial_dir == '/') | |
817 | die_on_unsafe_path(partial_dir, 0); | |
818 | } | |
819 | } | |
820 | if (server_filter_list.head) { | |
821 | char **dir; | |
822 | struct filter_list_struct *elp = &server_filter_list; | |
823 | ||
824 | for (dir = basis_dir; *dir; dir++) { | |
825 | if (check_filter(elp, *dir, 1) < 0) | |
826 | goto options_rejected; | |
827 | } | |
828 | if (partial_dir && *partial_dir == '/' | |
829 | && check_filter(elp, partial_dir, 1) < 0) { | |
830 | options_rejected: | |
831 | rprintf(FERROR, | |
832 | "Your options have been rejected by the server.\n"); | |
833 | exit_cleanup(RERR_SYNTAX); | |
834 | } | |
7c58c991 WD |
835 | } |
836 | ||
84e6d6fd WD |
837 | exit_code = do_recv(f_in,f_out,flist,local_name); |
838 | exit_cleanup(exit_code); | |
c627d613 AT |
839 | } |
840 | ||
841 | ||
734a94a2 | 842 | int child_main(int argc, char *argv[]) |
25d34a5c MP |
843 | { |
844 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); | |
734a94a2 | 845 | return 0; |
25d34a5c MP |
846 | } |
847 | ||
848 | ||
9486289c | 849 | void start_server(int f_in, int f_out, int argc, char *argv[]) |
366345fe | 850 | { |
f0359dd0 AT |
851 | set_nonblocking(f_in); |
852 | set_nonblocking(f_out); | |
853 | ||
da3478b2 WD |
854 | io_set_sock_fds(f_in, f_out); |
855 | setup_protocol(f_out, f_in); | |
595251de | 856 | #if defined HAVE_ICONV_OPEN && defined HAVE_ICONV_H |
9656de5d WD |
857 | setup_iconv(); |
858 | #endif | |
da3478b2 | 859 | |
d04e9c51 | 860 | if (protocol_version >= 23) |
da3478b2 | 861 | io_start_multiplex_out(); |
7a6421fa | 862 | |
7a6421fa | 863 | if (am_sender) { |
83926d3c | 864 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
bf26aa22 WD |
865 | if (need_messages_from_generator) |
866 | io_start_multiplex_in(); | |
9b3318b0 | 867 | |
7842418b | 868 | recv_filter_list(f_in); |
7a6421fa AT |
869 | do_server_sender(f_in, f_out, argc, argv); |
870 | } else { | |
871 | do_server_recv(f_in, f_out, argc, argv); | |
872 | } | |
873 | exit_cleanup(0); | |
366345fe AT |
874 | } |
875 | ||
0ba48136 MP |
876 | |
877 | /* | |
878 | * This is called once the connection has been negotiated. It is used | |
879 | * for rsyncd, remote-shell, and local connections. | |
880 | */ | |
19b27a48 | 881 | int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[]) |
9486289c | 882 | { |
088aac85 | 883 | struct file_list *flist = NULL; |
84e6d6fd | 884 | int exit_code = 0, exit_code2 = 0; |
9486289c | 885 | char *local_name = NULL; |
19b27a48 AT |
886 | |
887 | cleanup_child_pid = pid; | |
67a28eb2 | 888 | if (!read_batch) { |
b9f592fb WD |
889 | set_nonblocking(f_in); |
890 | set_nonblocking(f_out); | |
891 | } | |
f0359dd0 | 892 | |
da3478b2 | 893 | io_set_sock_fds(f_in, f_out); |
6d7b6081 | 894 | setup_protocol(f_out,f_in); |
595251de | 895 | #if defined HAVE_ICONV_OPEN && defined HAVE_ICONV_H |
9656de5d WD |
896 | setup_iconv(); |
897 | #endif | |
6d7b6081 | 898 | |
b9f592fb | 899 | if (protocol_version >= 23 && !read_batch) |
da3478b2 | 900 | io_start_multiplex_in(); |
d9c7edf6 | 901 | |
18882701 WD |
902 | /* We set our stderr file handle to blocking because ssh might have |
903 | * set it to non-blocking. This can be particularly troublesome if | |
904 | * stderr is a clone of stdout, because ssh would have set our stdout | |
905 | * to non-blocking at the same time (which can easily cause us to lose | |
906 | * output from our print statements). This kluge shouldn't cause ssh | |
907 | * any problems for how we use it. Note also that we delayed setting | |
908 | * this until after the above protocol setup so that we know for sure | |
909 | * that ssh is done twiddling its file descriptors. */ | |
910 | set_blocking(STDERR_FILENO); | |
911 | ||
9486289c | 912 | if (am_sender) { |
83926d3c | 913 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
da3478b2 | 914 | io_start_buffering_out(); |
860236bf | 915 | if (!filesfrom_host) |
a0a33ee5 | 916 | set_msg_fd_in(f_in); |
57dee64e | 917 | send_filter_list(f_out); |
860236bf | 918 | if (filesfrom_host) |
7c2a9e76 | 919 | filesfrom_fd = f_in; |
b9f592fb | 920 | |
e8a96e27 | 921 | if (write_batch && !am_server) |
b9f592fb | 922 | start_write_batch(f_out); |
a00628b3 | 923 | flist = send_file_list(f_out, argc, argv); |
a0a33ee5 | 924 | set_msg_fd_in(-1); |
d9c7edf6 | 925 | if (verbose > 3) |
9486289c | 926 | rprintf(FINFO,"file list sent\n"); |
a00628b3 | 927 | the_file_list = flist; |
e1b3d5c4 | 928 | |
f1e3656e | 929 | io_flush(NORMAL_FLUSH); |
9486289c | 930 | send_files(flist,f_out,f_in); |
f1e3656e | 931 | io_flush(FULL_FLUSH); |
33c4b445 | 932 | handle_stats(-1); |
4e0fcd85 | 933 | if (protocol_version >= 24) |
3485ae83 | 934 | read_final_goodbye(f_in, f_out); |
9486289c AT |
935 | if (pid != -1) { |
936 | if (verbose > 3) | |
08a740ff | 937 | rprintf(FINFO,"client_run waiting on %d\n", (int) pid); |
f1e3656e | 938 | io_flush(FULL_FLUSH); |
84e6d6fd | 939 | wait_process_with_flush(pid, &exit_code); |
9486289c | 940 | } |
33c4b445 | 941 | output_summary(); |
c87ae64a | 942 | io_flush(FULL_FLUSH); |
84e6d6fd | 943 | exit_cleanup(exit_code); |
9486289c | 944 | } |
f7632fc6 | 945 | |
bf26aa22 WD |
946 | if (need_messages_from_generator && !read_batch) |
947 | io_start_multiplex_out(); | |
948 | ||
48a1ff0d WD |
949 | if (argc == 0) |
950 | list_only |= 1; | |
d9c7edf6 | 951 | |
57dee64e | 952 | send_filter_list(read_batch ? -1 : f_out); |
d9c7edf6 | 953 | |
7c2a9e76 WD |
954 | if (filesfrom_fd >= 0) { |
955 | io_set_filesfrom_fds(filesfrom_fd, f_out); | |
956 | filesfrom_fd = -1; | |
957 | } | |
958 | ||
e8a96e27 | 959 | if (write_batch && !am_server) |
b9f592fb | 960 | start_write_batch(f_in); |
9486289c | 961 | flist = recv_file_list(f_in); |
a00628b3 | 962 | the_file_list = flist; |
d9c7edf6 | 963 | |
9d19f8a5 WD |
964 | if (flist && flist->count > 0) { |
965 | local_name = get_local_name(flist, argv[0]); | |
d9c7edf6 | 966 | |
84e6d6fd | 967 | exit_code2 = do_recv(f_in, f_out, flist, local_name); |
9d19f8a5 WD |
968 | } else { |
969 | handle_stats(-1); | |
970 | output_summary(); | |
971 | } | |
d9c7edf6 | 972 | |
9486289c | 973 | if (pid != -1) { |
8d9dc9f9 | 974 | if (verbose > 3) |
08a740ff | 975 | rprintf(FINFO,"client_run2 waiting on %d\n", (int) pid); |
f1e3656e | 976 | io_flush(FULL_FLUSH); |
84e6d6fd | 977 | wait_process_with_flush(pid, &exit_code); |
9486289c | 978 | } |
d9c7edf6 | 979 | |
84e6d6fd | 980 | return MAX(exit_code, exit_code2); |
9486289c AT |
981 | } |
982 | ||
7169bb4a MP |
983 | static int copy_argv (char *argv[]) |
984 | { | |
985 | int i; | |
986 | ||
987 | for (i = 0; argv[i]; i++) { | |
988 | if (!(argv[i] = strdup(argv[i]))) { | |
989 | rprintf (FERROR, "out of memory at %s(%d)\n", | |
990 | __FILE__, __LINE__); | |
991 | return RERR_MALLOC; | |
992 | } | |
993 | } | |
994 | ||
995 | return 0; | |
996 | } | |
997 | ||
998 | ||
c1a04ecb | 999 | /** |
0ba48136 MP |
1000 | * Start a client for either type of remote connection. Work out |
1001 | * whether the arguments request a remote shell or rsyncd connection, | |
1002 | * and call the appropriate connection function, then run_client. | |
0b4af330 MP |
1003 | * |
1004 | * Calls either start_socket_client (for sockets) or do_cmd and | |
1005 | * client_run (for ssh). | |
c1a04ecb | 1006 | **/ |
fc8a6b97 | 1007 | static int start_client(int argc, char *argv[]) |
5d6bcd44 AT |
1008 | { |
1009 | char *p; | |
1010 | char *shell_machine = NULL; | |
1011 | char *shell_path = NULL; | |
1012 | char *shell_user = NULL; | |
19b27a48 AT |
1013 | int ret; |
1014 | pid_t pid; | |
5d6bcd44 | 1015 | int f_in,f_out; |
7169bb4a MP |
1016 | int rc; |
1017 | ||
1018 | /* Don't clobber argv[] so that ps(1) can still show the right | |
d9c7edf6 | 1019 | * command line. */ |
75aeac44 | 1020 | if ((rc = copy_argv(argv))) |
7169bb4a | 1021 | return rc; |
5d6bcd44 | 1022 | |
d16c245f | 1023 | if (!read_batch) { /* for read_batch, NO source is specified */ |
860236bf WD |
1024 | shell_path = check_for_hostspec(argv[0], &shell_machine, &rsync_port); |
1025 | if (shell_path) { /* source is remote */ | |
9425918d WD |
1026 | char *dummy1; |
1027 | int dummy2; | |
ee8e2b15 WD |
1028 | if (--argc |
1029 | && check_for_hostspec(argv[argc], &dummy1, &dummy2)) { | |
9425918d WD |
1030 | rprintf(FERROR, |
1031 | "The source and destination cannot both be remote.\n"); | |
1032 | exit_cleanup(RERR_SYNTAX); | |
1033 | } | |
42ccb4c0 | 1034 | argv++; |
860236bf WD |
1035 | if (filesfrom_host && *filesfrom_host |
1036 | && strcmp(filesfrom_host, shell_machine) != 0) { | |
7c2a9e76 | 1037 | rprintf(FERROR, |
50b31539 | 1038 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
1039 | exit_cleanup(RERR_SYNTAX); |
1040 | } | |
860236bf | 1041 | if (rsync_port) { |
d9c7edf6 | 1042 | if (!shell_cmd) { |
860236bf WD |
1043 | return start_socket_client(shell_machine, |
1044 | shell_path, | |
42ccb4c0 | 1045 | argc, argv); |
d9c7edf6 | 1046 | } |
d9c7edf6 | 1047 | daemon_over_rsh = 1; |
75aeac44 | 1048 | } |
3591c066 | 1049 | |
42ccb4c0 WD |
1050 | am_sender = 0; |
1051 | } else { /* source is local, check dest arg */ | |
1052 | am_sender = 1; | |
1053 | ||
ee8e2b15 WD |
1054 | if (argc > 1) |
1055 | p = argv[--argc]; | |
1056 | else { | |
1057 | p = "."; | |
1058 | list_only = 1; | |
d9c7edf6 | 1059 | } |
a125c82a | 1060 | |
ee8e2b15 | 1061 | shell_path = check_for_hostspec(p, &shell_machine, &rsync_port); |
860236bf WD |
1062 | if (shell_path && filesfrom_host && *filesfrom_host |
1063 | && strcmp(filesfrom_host, shell_machine) != 0) { | |
7c2a9e76 | 1064 | rprintf(FERROR, |
50b31539 | 1065 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
1066 | exit_cleanup(RERR_SYNTAX); |
1067 | } | |
860236bf | 1068 | if (!shell_path) { /* no hostspec found, so src & dest are local */ |
d9c7edf6 | 1069 | local_server = 1; |
860236bf | 1070 | if (filesfrom_host) { |
7c2a9e76 | 1071 | rprintf(FERROR, |
50b31539 | 1072 | "--files-from cannot be remote when the transfer is local\n"); |
7c2a9e76 WD |
1073 | exit_cleanup(RERR_SYNTAX); |
1074 | } | |
860236bf | 1075 | shell_machine = NULL; |
ee8e2b15 | 1076 | shell_path = p; |
860236bf | 1077 | } else if (rsync_port) { |
d9c7edf6 | 1078 | if (!shell_cmd) { |
860236bf WD |
1079 | return start_socket_client(shell_machine, |
1080 | shell_path, | |
42ccb4c0 | 1081 | argc, argv); |
d9c7edf6 | 1082 | } |
d9c7edf6 | 1083 | daemon_over_rsh = 1; |
a125c82a | 1084 | } |
5d6bcd44 | 1085 | } |
d16c245f | 1086 | } else { /* read_batch */ |
d9c7edf6 WD |
1087 | local_server = 1; |
1088 | shell_path = argv[argc-1]; | |
860236bf | 1089 | if (check_for_hostspec(shell_path, &shell_machine, &rsync_port)) { |
b9f592fb WD |
1090 | rprintf(FERROR, "remote destination is not allowed with --read-batch\n"); |
1091 | exit_cleanup(RERR_SYNTAX); | |
1092 | } | |
6902ed17 MP |
1093 | } |
1094 | ||
5d6bcd44 | 1095 | if (shell_machine) { |
6fc048f4 | 1096 | p = strrchr(shell_machine,'@'); |
5d6bcd44 AT |
1097 | if (p) { |
1098 | *p = 0; | |
1099 | shell_user = shell_machine; | |
1100 | shell_machine = p+1; | |
1101 | } | |
1102 | } | |
1103 | ||
1104 | if (verbose > 3) { | |
9486289c | 1105 | rprintf(FINFO,"cmd=%s machine=%s user=%s path=%s\n", |
45c49b52 WD |
1106 | shell_cmd ? shell_cmd : "", |
1107 | shell_machine ? shell_machine : "", | |
1108 | shell_user ? shell_user : "", | |
1109 | shell_path ? shell_path : ""); | |
5d6bcd44 | 1110 | } |
d9c7edf6 | 1111 | |
d16c245f | 1112 | /* for remote source, only single dest arg can remain ... */ |
f7632fc6 | 1113 | if (!am_sender && argc > 1) { |
5d6bcd44 | 1114 | usage(FERROR); |
65417579 | 1115 | exit_cleanup(RERR_SYNTAX); |
5d6bcd44 | 1116 | } |
27e3e9c9 | 1117 | |
d16c245f | 1118 | /* ... or no dest at all */ |
48a1ff0d WD |
1119 | if (!am_sender && argc == 0) |
1120 | list_only |= 1; | |
d9c7edf6 | 1121 | |
75aeac44 WD |
1122 | pid = do_cmd(shell_cmd,shell_machine,shell_user,shell_path, |
1123 | &f_in,&f_out); | |
1124 | ||
1125 | /* if we're running an rsync server on the remote host over a | |
9af87151 | 1126 | * remote shell command, we need to do the RSYNCD protocol first */ |
75aeac44 WD |
1127 | if (daemon_over_rsh) { |
1128 | int tmpret; | |
1129 | tmpret = start_inband_exchange(shell_user, shell_path, | |
1130 | f_in, f_out, argc); | |
1131 | if (tmpret < 0) | |
1132 | return tmpret; | |
1133 | } | |
1134 | ||
fc8a6b97 AT |
1135 | ret = client_run(f_in, f_out, pid, argc, argv); |
1136 | ||
1137 | fflush(stdout); | |
1138 | fflush(stderr); | |
1139 | ||
1140 | return ret; | |
5d6bcd44 AT |
1141 | } |
1142 | ||
366345fe | 1143 | |
067669da WD |
1144 | static RETSIGTYPE sigusr1_handler(UNUSED(int val)) |
1145 | { | |
6bf32edb | 1146 | exit_cleanup(RERR_SIGNAL1); |
82306bf6 AT |
1147 | } |
1148 | ||
067669da WD |
1149 | static RETSIGTYPE sigusr2_handler(UNUSED(int val)) |
1150 | { | |
33c4b445 WD |
1151 | if (!am_server) |
1152 | output_summary(); | |
40df65fd | 1153 | close_all(); |
33c4b445 WD |
1154 | if (log_got_error) |
1155 | _exit(RERR_PARTIAL); | |
8b35435f AT |
1156 | _exit(0); |
1157 | } | |
1158 | ||
6d59ac19 | 1159 | RETSIGTYPE remember_children(UNUSED(int val)) |
067669da | 1160 | { |
029c1713 | 1161 | #ifdef WNOHANG |
ee7118a8 DD |
1162 | int cnt, status; |
1163 | pid_t pid; | |
1164 | /* An empty waitpid() loop was put here by Tridge and we could never | |
d9c7edf6 | 1165 | * get him to explain why he put it in, so rather than taking it |
ee7118a8 DD |
1166 | * out we're instead saving the child exit statuses for later use. |
1167 | * The waitpid() loop presumably eliminates all possibility of leaving | |
97d8e709 | 1168 | * zombie children, maybe that's why he did it. */ |
ee7118a8 | 1169 | while ((pid = waitpid(-1, &status, WNOHANG)) > 0) { |
9af87151 WD |
1170 | /* save the child's exit status */ |
1171 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { | |
1172 | if (pid_stat_table[cnt].pid == 0) { | |
1173 | pid_stat_table[cnt].pid = pid; | |
1174 | pid_stat_table[cnt].status = status; | |
1175 | break; | |
1176 | } | |
1177 | } | |
ee7118a8 | 1178 | } |
029c1713 | 1179 | #endif |
8261af74 | 1180 | #ifndef HAVE_SIGACTION |
6d59ac19 | 1181 | signal(SIGCHLD, remember_children); |
60ee01f5 | 1182 | #endif |
19b27a48 AT |
1183 | } |
1184 | ||
c0531332 MP |
1185 | |
1186 | /** | |
1187 | * This routine catches signals and tries to send them to gdb. | |
1188 | * | |
1189 | * Because it's called from inside a signal handler it ought not to | |
1190 | * use too many library routines. | |
1191 | * | |
1192 | * @todo Perhaps use "screen -X" instead/as well, to help people | |
1193 | * debugging without easy access to X. Perhaps use an environment | |
1194 | * variable, or just call a script? | |
1195 | * | |
1196 | * @todo The /proc/ magic probably only works on Linux (and | |
1197 | * Solaris?) Can we be more portable? | |
1198 | **/ | |
1199 | #ifdef MAINTAINER_MODE | |
4fdc39dd MP |
1200 | const char *get_panic_action(void) |
1201 | { | |
1202 | const char *cmd_fmt = getenv("RSYNC_PANIC_ACTION"); | |
1203 | ||
1204 | if (cmd_fmt) | |
1205 | return cmd_fmt; | |
1206 | else | |
1207 | return "xterm -display :0 -T Panic -n Panic " | |
1208 | "-e gdb /proc/%d/exe %d"; | |
1209 | } | |
1210 | ||
1211 | ||
9fb3f7a9 MP |
1212 | /** |
1213 | * Handle a fatal signal by launching a debugger, controlled by $RSYNC_PANIC_ACTION. | |
1214 | * | |
1215 | * This signal handler is only installed if we were configured with | |
1216 | * --enable-maintainer-mode. Perhaps it should always be on and we | |
1217 | * should just look at the environment variable, but I'm a bit leery | |
1218 | * of a signal sending us into a busy loop. | |
1219 | **/ | |
067669da | 1220 | static RETSIGTYPE rsync_panic_handler(UNUSED(int whatsig)) |
c0531332 MP |
1221 | { |
1222 | char cmd_buf[300]; | |
1223 | int ret; | |
4fdc39dd MP |
1224 | |
1225 | sprintf(cmd_buf, get_panic_action(), | |
c0531332 MP |
1226 | getpid(), getpid()); |
1227 | ||
1228 | /* Unless we failed to execute gdb, we allow the process to | |
1229 | * continue. I'm not sure if that's right. */ | |
1230 | ret = system(cmd_buf); | |
1231 | if (ret) | |
1232 | _exit(ret); | |
1233 | } | |
1234 | #endif | |
1235 | ||
1236 | ||
5d6bcd44 | 1237 | int main(int argc,char *argv[]) |
d9c7edf6 | 1238 | { |
ff81e809 | 1239 | int ret; |
66a9dc96 WD |
1240 | int orig_argc = argc; |
1241 | char **orig_argv = argv; | |
8261af74 WD |
1242 | #ifdef HAVE_SIGACTION |
1243 | # ifdef HAVE_SIGPROCMASK | |
60ee01f5 | 1244 | sigset_t sigmask; |
5d6bcd44 | 1245 | |
60ee01f5 | 1246 | sigemptyset(&sigmask); |
8261af74 | 1247 | # endif |
60ee01f5 WD |
1248 | sigact.sa_flags = SA_NOCLDSTOP; |
1249 | #endif | |
1250 | SIGACTMASK(SIGUSR1, sigusr1_handler); | |
1251 | SIGACTMASK(SIGUSR2, sigusr2_handler); | |
6d59ac19 | 1252 | SIGACTMASK(SIGCHLD, remember_children); |
c0531332 | 1253 | #ifdef MAINTAINER_MODE |
60ee01f5 WD |
1254 | SIGACTMASK(SIGSEGV, rsync_panic_handler); |
1255 | SIGACTMASK(SIGFPE, rsync_panic_handler); | |
1256 | SIGACTMASK(SIGABRT, rsync_panic_handler); | |
1257 | SIGACTMASK(SIGBUS, rsync_panic_handler); | |
1258 | #endif | |
5d6bcd44 | 1259 | |
7a6421fa | 1260 | starttime = time(NULL); |
6fe05820 | 1261 | am_root = (MY_UID() == 0); |
c627d613 | 1262 | |
a800434a AT |
1263 | memset(&stats, 0, sizeof(stats)); |
1264 | ||
df5e03da AT |
1265 | if (argc < 2) { |
1266 | usage(FERROR); | |
65417579 | 1267 | exit_cleanup(RERR_SYNTAX); |
df5e03da AT |
1268 | } |
1269 | ||
7a6421fa | 1270 | /* we set a 0 umask so that correct file permissions can be |
9af87151 | 1271 | * carried across */ |
05278935 | 1272 | orig_umask = umask(0); |
5d6bcd44 | 1273 | |
eb598fac WD |
1274 | #if defined CONFIG_LOCALE && defined HAVE_SETLOCALE |
1275 | setlocale(LC_CTYPE, ""); | |
1276 | #endif | |
1277 | ||
50135767 | 1278 | if (!parse_arguments(&argc, (const char ***) &argv, 1)) { |
d9c7edf6 WD |
1279 | /* FIXME: We ought to call the same error-handling |
1280 | * code here, rather than relying on getopt. */ | |
50135767 | 1281 | option_error(); |
65417579 | 1282 | exit_cleanup(RERR_SYNTAX); |
b11ed3b1 | 1283 | } |
5d6bcd44 | 1284 | |
60ee01f5 WD |
1285 | SIGACTMASK(SIGINT, sig_int); |
1286 | SIGACTMASK(SIGHUP, sig_int); | |
1287 | SIGACTMASK(SIGTERM, sig_int); | |
1288 | #if defined HAVE_SIGACTION && HAVE_SIGPROCMASK | |
1289 | sigprocmask(SIG_UNBLOCK, &sigmask, NULL); | |
1290 | #endif | |
6b83141d | 1291 | |
34758d5c MP |
1292 | /* Ignore SIGPIPE; we consistently check error codes and will |
1293 | * see the EPIPE. */ | |
60ee01f5 | 1294 | SIGACTION(SIGPIPE, SIG_IGN); |
55e54e46 WD |
1295 | #ifdef SIGXFSZ |
1296 | SIGACTION(SIGXFSZ, SIG_IGN); | |
1297 | #endif | |
34758d5c | 1298 | |
c226b7c2 | 1299 | /* Initialize push_dir here because on some old systems getcwd |
9af87151 WD |
1300 | * (implemented by forking "pwd" and reading its output) doesn't |
1301 | * work when there are other child processes. Also, on all systems | |
1302 | * that implement getcwd that way "pwd" can't be found after chroot. */ | |
59187666 | 1303 | push_dir(NULL); |
c226b7c2 | 1304 | |
44e9e221 WD |
1305 | init_flist(); |
1306 | ||
e8a96e27 | 1307 | if ((write_batch || read_batch) && !am_server) { |
b9f592fb | 1308 | if (write_batch) |
66a9dc96 | 1309 | write_batch_shell_file(orig_argc, orig_argv, argc); |
b9f592fb | 1310 | |
dbbab0c4 WD |
1311 | if (read_batch && strcmp(batch_name, "-") == 0) |
1312 | batch_fd = STDIN_FILENO; | |
1313 | else { | |
1314 | batch_fd = do_open(batch_name, | |
b9f592fb WD |
1315 | write_batch ? O_WRONLY | O_CREAT | O_TRUNC |
1316 | : O_RDONLY, S_IRUSR | S_IWUSR); | |
dbbab0c4 | 1317 | } |
b9f592fb WD |
1318 | if (batch_fd < 0) { |
1319 | rsyserr(FERROR, errno, "Batch file %s open error", | |
71903f60 | 1320 | full_fname(batch_name)); |
b9f592fb WD |
1321 | exit_cleanup(RERR_FILEIO); |
1322 | } | |
9459290a WD |
1323 | if (read_batch) |
1324 | read_stream_flags(batch_fd); | |
6902ed17 | 1325 | } |
e8a96e27 WD |
1326 | if (write_batch < 0) |
1327 | dry_run = 1; | |
6902ed17 | 1328 | |
75aeac44 | 1329 | if (am_daemon && !am_server) |
7a6421fa | 1330 | return daemon_main(); |
f0fca04e | 1331 | |
08ac228f AT |
1332 | if (argc < 1) { |
1333 | usage(FERROR); | |
65417579 | 1334 | exit_cleanup(RERR_SYNTAX); |
08ac228f AT |
1335 | } |
1336 | ||
7a6421fa | 1337 | if (am_server) { |
f0359dd0 AT |
1338 | set_nonblocking(STDIN_FILENO); |
1339 | set_nonblocking(STDOUT_FILENO); | |
75aeac44 WD |
1340 | if (am_daemon) |
1341 | return start_daemon(STDIN_FILENO, STDOUT_FILENO); | |
7a6421fa AT |
1342 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); |
1343 | } | |
c627d613 | 1344 | |
ff81e809 | 1345 | ret = start_client(argc, argv); |
d9c7edf6 | 1346 | if (ret == -1) |
9098bbf3 | 1347 | exit_cleanup(RERR_STARTCLIENT); |
088aac85 | 1348 | else |
9098bbf3 MP |
1349 | exit_cleanup(ret); |
1350 | ||
0f5a04e3 | 1351 | return ret; |
c627d613 | 1352 | } |