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 WD |
52 | extern int sanitize_paths; |
53 | extern int module_id; | |
32eda096 | 54 | extern int rsync_port; |
b1df18d7 | 55 | extern int whole_file; |
32eda096 WD |
56 | extern int read_batch; |
57 | extern int write_batch; | |
b9f592fb | 58 | extern int batch_fd; |
c0d8e84c | 59 | extern int batch_gen_fd; |
32eda096 WD |
60 | extern int filesfrom_fd; |
61 | extern pid_t cleanup_child_pid; | |
50839b4b | 62 | extern struct stats stats; |
860236bf | 63 | extern char *filesfrom_host; |
7c58c991 | 64 | extern char *basis_dir[]; |
32eda096 WD |
65 | extern char *rsync_path; |
66 | extern char *shell_cmd; | |
9b3318b0 | 67 | extern char *batch_name; |
57dee64e WD |
68 | |
69 | int local_server = 0; | |
b24498ec | 70 | int startdir_depth = 0; |
05278935 | 71 | mode_t orig_umask = 0; |
a00628b3 | 72 | struct file_list *the_file_list; |
c627d613 | 73 | |
91c5833b WD |
74 | /* There's probably never more than at most 2 outstanding child processes, |
75 | * but set it higher, just in case. */ | |
84e6d6fd | 76 | #define MAXCHILDPROCS 7 |
ee7118a8 | 77 | |
8261af74 WD |
78 | #ifdef HAVE_SIGACTION |
79 | # ifdef HAVE_SIGPROCMASK | |
80 | # define SIGACTMASK(n,h) SIGACTION(n,h), sigaddset(&sigmask,(n)) | |
81 | # else | |
82 | # define SIGACTMASK(n,h) SIGACTION(n,h) | |
83 | # endif | |
60ee01f5 WD |
84 | static struct sigaction sigact; |
85 | #endif | |
86 | ||
ee7118a8 DD |
87 | struct pid_status { |
88 | pid_t pid; | |
84e6d6fd | 89 | int status; |
ee7118a8 DD |
90 | } pid_stat_table[MAXCHILDPROCS]; |
91 | ||
33c4b445 WD |
92 | static time_t starttime, endtime; |
93 | static int64 total_read, total_written; | |
94 | ||
e5a2b854 | 95 | static void show_malloc_stats(void); |
82980a23 | 96 | |
97d8e709 | 97 | /* Works like waitpid(), but if we already harvested the child pid in our |
6d59ac19 | 98 | * remember_children(), we succeed instead of returning an error. */ |
97d8e709 | 99 | pid_t wait_process(pid_t pid, int *status_ptr, int flags) |
82980a23 | 100 | { |
97d8e709 | 101 | pid_t waited_pid = waitpid(pid, status_ptr, flags); |
d9c7edf6 | 102 | |
6fb812f7 | 103 | if (waited_pid == -1 && errno == ECHILD) { |
97d8e709 | 104 | /* Status of requested child no longer available: check to |
6d59ac19 | 105 | * see if it was processed by remember_children(). */ |
97d8e709 | 106 | int cnt; |
84e6d6fd | 107 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { |
ee7118a8 | 108 | if (pid == pid_stat_table[cnt].pid) { |
97d8e709 | 109 | *status_ptr = pid_stat_table[cnt].status; |
ee7118a8 | 110 | pid_stat_table[cnt].pid = 0; |
97d8e709 | 111 | return pid; |
ee7118a8 DD |
112 | } |
113 | } | |
114 | } | |
115 | ||
97d8e709 WD |
116 | return waited_pid; |
117 | } | |
118 | ||
119 | /* Wait for a process to exit, calling io_flush while waiting. */ | |
84e6d6fd | 120 | static void wait_process_with_flush(pid_t pid, int *exit_code_ptr) |
97d8e709 WD |
121 | { |
122 | pid_t waited_pid; | |
123 | int status; | |
124 | ||
125 | while ((waited_pid = wait_process(pid, &status, WNOHANG)) == 0) { | |
126 | msleep(20); | |
127 | io_flush(FULL_FLUSH); | |
128 | } | |
129 | ||
d9c7edf6 WD |
130 | /* TODO: If the child exited on a signal, then log an |
131 | * appropriate error message. Perhaps we should also accept a | |
132 | * message describing the purpose of the child. Also indicate | |
dbefb6b4 | 133 | * this to the caller so that they know something went wrong. */ |
84e6d6fd WD |
134 | if (waited_pid < 0) { |
135 | rsyserr(FERROR, errno, "waitpid"); | |
136 | *exit_code_ptr = RERR_WAITCHILD; | |
137 | } else if (!WIFEXITED(status)) { | |
40e6752f | 138 | #ifdef WCOREDUMP |
dbefb6b4 | 139 | if (WCOREDUMP(status)) |
84e6d6fd | 140 | *exit_code_ptr = RERR_CRASHED; |
40e6752f WD |
141 | else |
142 | #endif | |
143 | if (WIFSIGNALED(status)) | |
84e6d6fd | 144 | *exit_code_ptr = RERR_TERMINATED; |
dbefb6b4 | 145 | else |
84e6d6fd | 146 | *exit_code_ptr = RERR_WAITCHILD; |
dbefb6b4 | 147 | } else |
84e6d6fd | 148 | *exit_code_ptr = WEXITSTATUS(status); |
82980a23 AT |
149 | } |
150 | ||
b9f592fb WD |
151 | /* This function gets called from all 3 processes. We want the client side |
152 | * to actually output the text, but the sender is the only process that has | |
153 | * all the stats we need. So, if we're a client sender, we do the report. | |
154 | * If we're a server sender, we write the stats on the supplied fd. If | |
155 | * we're the client receiver we read the stats from the supplied fd and do | |
156 | * the report. All processes might also generate a set of debug stats, if | |
157 | * the verbose level is high enough (this is the only thing that the | |
158 | * generator process and the server receiver ever do here). */ | |
33c4b445 | 159 | static void handle_stats(int f) |
c627d613 | 160 | { |
33c4b445 WD |
161 | endtime = time(NULL); |
162 | ||
b9f592fb | 163 | /* Cache two stats because the read/write code can change it. */ |
33c4b445 WD |
164 | total_read = stats.total_read; |
165 | total_written = stats.total_written; | |
7a6421fa | 166 | |
7bb7058e | 167 | if (do_stats && verbose > 1) { |
5c15e29f | 168 | /* These come out from every process */ |
7bb7058e | 169 | show_malloc_stats(); |
86943126 | 170 | show_flist_stats(); |
5c15e29f MP |
171 | } |
172 | ||
e5fbaa71 S |
173 | if (am_generator) |
174 | return; | |
175 | ||
248fbb8c | 176 | if (am_daemon) { |
a9766ef1 | 177 | log_exit(0, __FILE__, __LINE__); |
83926d3c WD |
178 | if (f == -1 || !am_sender) |
179 | return; | |
248fbb8c AT |
180 | } |
181 | ||
e19452a9 | 182 | if (am_server) { |
3e491682 | 183 | if (am_sender) { |
b9f592fb WD |
184 | write_longint(f, total_read); |
185 | write_longint(f, total_written); | |
186 | write_longint(f, stats.total_size); | |
f0f7e760 WD |
187 | if (protocol_version >= 29) { |
188 | write_longint(f, stats.flist_buildtime); | |
189 | write_longint(f, stats.flist_xfertime); | |
190 | } | |
e19452a9 | 191 | } |
7a6421fa AT |
192 | return; |
193 | } | |
e19452a9 DD |
194 | |
195 | /* this is the client */ | |
d9c7edf6 | 196 | |
9d19f8a5 | 197 | if (f < 0 && !am_sender) /* e.g. when we got an empty file list. */ |
0f78b815 | 198 | ; |
9d19f8a5 | 199 | else if (!am_sender) { |
58c5c245 WD |
200 | /* Read the first two in opposite order because the meaning of |
201 | * read/write swaps when switching from sender to receiver. */ | |
b9f592fb WD |
202 | total_written = read_longint(f); |
203 | total_read = read_longint(f); | |
a800434a | 204 | stats.total_size = read_longint(f); |
f0f7e760 WD |
205 | if (protocol_version >= 29) { |
206 | stats.flist_buildtime = read_longint(f); | |
207 | stats.flist_xfertime = read_longint(f); | |
208 | } | |
e4676bb5 | 209 | } else if (write_batch) { |
b9f592fb WD |
210 | /* The --read-batch process is going to be a client |
211 | * receiver, so we need to give it the stats. */ | |
212 | write_longint(batch_fd, total_read); | |
213 | write_longint(batch_fd, total_written); | |
214 | write_longint(batch_fd, stats.total_size); | |
f0f7e760 WD |
215 | if (protocol_version >= 29) { |
216 | write_longint(batch_fd, stats.flist_buildtime); | |
217 | write_longint(batch_fd, stats.flist_xfertime); | |
218 | } | |
a800434a | 219 | } |
e4676bb5 | 220 | } |
a800434a | 221 | |
e4676bb5 WD |
222 | static void output_summary(void) |
223 | { | |
a800434a | 224 | if (do_stats) { |
1f658d42 | 225 | rprintf(FINFO,"\nNumber of files: %d\n", stats.num_files); |
d9c7edf6 WD |
226 | rprintf(FINFO,"Number of files transferred: %d\n", |
227 | stats.num_transferred_files); | |
60613dc8 WD |
228 | rprintf(FINFO,"Total file size: %s bytes\n", |
229 | human_num(stats.total_size)); | |
230 | rprintf(FINFO,"Total transferred file size: %s bytes\n", | |
231 | human_num(stats.total_transferred_size)); | |
232 | rprintf(FINFO,"Literal data: %s bytes\n", | |
233 | human_num(stats.literal_data)); | |
234 | rprintf(FINFO,"Matched data: %s bytes\n", | |
235 | human_num(stats.matched_data)); | |
1f658d42 | 236 | rprintf(FINFO,"File list size: %d\n", stats.flist_size); |
f0f7e760 WD |
237 | if (stats.flist_buildtime) { |
238 | rprintf(FINFO, | |
239 | "File list generation time: %.3f seconds\n", | |
240 | (double)stats.flist_buildtime / 1000); | |
241 | rprintf(FINFO, | |
242 | "File list transfer time: %.3f seconds\n", | |
243 | (double)stats.flist_xfertime / 1000); | |
244 | } | |
60613dc8 WD |
245 | rprintf(FINFO,"Total bytes sent: %s\n", |
246 | human_num(total_written)); | |
247 | rprintf(FINFO,"Total bytes received: %s\n", | |
248 | human_num(total_read)); | |
7a6421fa | 249 | } |
d9c7edf6 | 250 | |
e19452a9 | 251 | if (verbose || do_stats) { |
b9f592fb | 252 | rprintf(FINFO, |
60613dc8 WD |
253 | "\nsent %s bytes received %s bytes %s bytes/sec\n", |
254 | human_num(total_written), human_num(total_read), | |
255 | human_dnum((total_written + total_read)/(0.5 + (endtime - starttime)), 2)); | |
256 | rprintf(FINFO, "total size is %s speedup is %.2f\n", | |
257 | human_num(stats.total_size), | |
b9f592fb | 258 | (double)stats.total_size / (total_written+total_read)); |
e19452a9 | 259 | } |
fc8a6b97 AT |
260 | |
261 | fflush(stdout); | |
262 | fflush(stderr); | |
c627d613 AT |
263 | } |
264 | ||
265 | ||
e5a2b854 MP |
266 | /** |
267 | * If our C library can get malloc statistics, then show them to FINFO | |
268 | **/ | |
269 | static void show_malloc_stats(void) | |
270 | { | |
4f5b0756 | 271 | #ifdef HAVE_MALLINFO |
e5a2b854 MP |
272 | struct mallinfo mi; |
273 | ||
274 | mi = mallinfo(); | |
275 | ||
ce672562 | 276 | rprintf(FINFO, "\n" RSYNC_NAME "[%d] (%s%s%s) heap statistics:\n", |
f846a9bf WD |
277 | getpid(), am_server ? "server " : "", |
278 | am_daemon ? "daemon " : "", who_am_i()); | |
279 | rprintf(FINFO, " arena: %10ld (bytes from sbrk)\n", | |
280 | (long)mi.arena); | |
281 | rprintf(FINFO, " ordblks: %10ld (chunks not in use)\n", | |
282 | (long)mi.ordblks); | |
283 | rprintf(FINFO, " smblks: %10ld\n", | |
284 | (long)mi.smblks); | |
285 | rprintf(FINFO, " hblks: %10ld (chunks from mmap)\n", | |
286 | (long)mi.hblks); | |
287 | rprintf(FINFO, " hblkhd: %10ld (bytes from mmap)\n", | |
288 | (long)mi.hblkhd); | |
289 | rprintf(FINFO, " allmem: %10ld (bytes from sbrk + mmap)\n", | |
290 | (long)mi.arena + mi.hblkhd); | |
291 | rprintf(FINFO, " usmblks: %10ld\n", | |
292 | (long)mi.usmblks); | |
293 | rprintf(FINFO, " fsmblks: %10ld\n", | |
294 | (long)mi.fsmblks); | |
295 | rprintf(FINFO, " uordblks: %10ld (bytes used)\n", | |
296 | (long)mi.uordblks); | |
297 | rprintf(FINFO, " fordblks: %10ld (bytes free)\n", | |
298 | (long)mi.fordblks); | |
299 | rprintf(FINFO, " keepcost: %10ld (bytes in releasable chunk)\n", | |
300 | (long)mi.keepcost); | |
e5a2b854 MP |
301 | #endif /* HAVE_MALLINFO */ |
302 | } | |
303 | ||
304 | ||
0882faa2 | 305 | /* Start the remote shell. cmd may be NULL to use the default. */ |
6c2e5b56 WD |
306 | static pid_t do_cmd(char *cmd, char *machine, char *user, char *path, |
307 | int *f_in, int *f_out) | |
c627d613 | 308 | { |
6c2e5b56 | 309 | int i, argc = 0; |
887e553f | 310 | char *args[MAX_ARGS]; |
19b27a48 | 311 | pid_t ret; |
82f0c63e | 312 | char *dir = NULL; |
bb4aa89c | 313 | int dash_l_set = 0; |
366345fe | 314 | |
088aac85 | 315 | if (!read_batch && !local_server) { |
82f0c63e | 316 | char *t, *f, in_quote = '\0'; |
9af87151 | 317 | char *rsh_env = getenv(RSYNC_RSH_ENV); |
366345fe | 318 | if (!cmd) |
9af87151 | 319 | cmd = rsh_env; |
366345fe AT |
320 | if (!cmd) |
321 | cmd = RSYNC_RSH; | |
322 | cmd = strdup(cmd); | |
d9c7edf6 | 323 | if (!cmd) |
366345fe AT |
324 | goto oom; |
325 | ||
82f0c63e WD |
326 | for (t = f = cmd; *f; f++) { |
327 | if (*f == ' ') | |
328 | continue; | |
e7a392c7 | 329 | /* Comparison leaves rooms for server_options(). */ |
d8c4d6de | 330 | if (argc >= MAX_ARGS - MAX_SERVER_ARGS) { |
e7a392c7 | 331 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); |
887e553f WD |
332 | exit_cleanup(RERR_SYNTAX); |
333 | } | |
82f0c63e WD |
334 | args[argc++] = t; |
335 | while (*f != ' ' || in_quote) { | |
336 | if (!*f) { | |
337 | if (in_quote) { | |
338 | rprintf(FERROR, | |
339 | "Missing trailing-%c in remote-shell command.\n", | |
340 | in_quote); | |
341 | exit_cleanup(RERR_SYNTAX); | |
342 | } | |
343 | f--; | |
344 | break; | |
345 | } | |
346 | if (*f == '\'' || *f == '"') { | |
347 | if (!in_quote) { | |
348 | in_quote = *f++; | |
349 | continue; | |
350 | } | |
351 | if (*f == in_quote && *++f != in_quote) { | |
352 | in_quote = '\0'; | |
353 | continue; | |
354 | } | |
355 | } | |
356 | *t++ = *f++; | |
357 | } | |
358 | *t++ = '\0'; | |
887e553f | 359 | } |
c627d613 | 360 | |
d9c7edf6 | 361 | /* check to see if we've already been given '-l user' in |
9af87151 | 362 | * the remote-shell command */ |
bb4aa89c WD |
363 | for (i = 0; i < argc-1; i++) { |
364 | if (!strcmp(args[i], "-l") && args[i+1][0] != '-') | |
365 | dash_l_set = 1; | |
366 | } | |
367 | ||
4f5b0756 | 368 | #ifdef HAVE_REMSH |
366345fe AT |
369 | /* remsh (on HPUX) takes the arguments the other way around */ |
370 | args[argc++] = machine; | |
bb4aa89c | 371 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
372 | args[argc++] = "-l"; |
373 | args[argc++] = user; | |
374 | } | |
7b8356d0 | 375 | #else |
bb4aa89c | 376 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
377 | args[argc++] = "-l"; |
378 | args[argc++] = user; | |
379 | } | |
380 | args[argc++] = machine; | |
7b8356d0 | 381 | #endif |
c627d613 | 382 | |
366345fe | 383 | args[argc++] = rsync_path; |
c627d613 | 384 | |
9af87151 | 385 | if (blocking_io < 0) { |
90e22f4b WD |
386 | char *cp; |
387 | if ((cp = strrchr(cmd, '/')) != NULL) | |
388 | cp++; | |
389 | else | |
390 | cp = cmd; | |
391 | if (strcmp(cp, "rsh") == 0 || strcmp(cp, "remsh") == 0) | |
392 | blocking_io = 1; | |
66b71163 | 393 | } |
e384bfbd | 394 | |
93689aa5 | 395 | server_options(args,&argc); |
e7a392c7 WD |
396 | |
397 | if (argc >= MAX_ARGS - 2) { | |
398 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
399 | exit_cleanup(RERR_SYNTAX); | |
400 | } | |
366345fe | 401 | } |
c627d613 | 402 | |
366345fe | 403 | args[argc++] = "."; |
76076c4b | 404 | |
d9c7edf6 | 405 | if (!daemon_over_rsh && path && *path) |
366345fe | 406 | args[argc++] = path; |
c627d613 | 407 | |
366345fe | 408 | args[argc] = NULL; |
c627d613 | 409 | |
366345fe | 410 | if (verbose > 3) { |
e7a392c7 | 411 | for (i = 0; i < argc; i++) |
45c49b52 | 412 | rprintf(FINFO, "cmd[%d]=%s ", i, args[i]); |
82f0c63e | 413 | rprintf(FINFO, "\n"); |
366345fe AT |
414 | } |
415 | ||
c0d8e84c WD |
416 | if (read_batch) { |
417 | int from_gen_pipe[2]; | |
418 | if (fd_pair(from_gen_pipe) < 0) { | |
419 | rsyserr(FERROR, errno, "pipe"); | |
420 | exit_cleanup(RERR_IPC); | |
421 | } | |
422 | batch_gen_fd = from_gen_pipe[0]; | |
423 | *f_out = from_gen_pipe[1]; | |
424 | *f_in = batch_fd; | |
425 | ret = -1; /* no child pid */ | |
426 | } else if (local_server) { | |
b1df18d7 WD |
427 | /* If the user didn't request --[no-]whole-file, force |
428 | * it on, but only if we're not batch processing. */ | |
c0d8e84c | 429 | if (whole_file < 0 && !write_batch) |
b1df18d7 | 430 | whole_file = 1; |
25d34a5c | 431 | ret = local_child(argc, args, f_in, f_out, child_main); |
c0d8e84c | 432 | } else |
366345fe | 433 | ret = piped_child(args,f_in,f_out); |
c627d613 | 434 | |
3a69fad0 WD |
435 | if (dir) |
436 | free(dir); | |
82306bf6 | 437 | |
366345fe | 438 | return ret; |
c627d613 | 439 | |
acee11fc | 440 | oom: |
366345fe AT |
441 | out_of_memory("do_cmd"); |
442 | return 0; /* not reached */ | |
c627d613 AT |
443 | } |
444 | ||
eb598fac WD |
445 | /* The receiving side operates in one of two modes: |
446 | * | |
cc8c5057 WD |
447 | * 1. it receives any number of files into a destination directory, |
448 | * placing them according to their names in the file-list. | |
eb598fac WD |
449 | * |
450 | * 2. it receives a single file and saves it using the name in the | |
451 | * destination path instead of its file-list name. This requires a | |
452 | * "local name" for writing out the destination file. | |
453 | * | |
454 | * So, our task is to figure out what mode/local-name we need and return | |
455 | * either a NULL for mode 1, or the local-name for mode 2. We also | |
456 | * change directory if there are any path components in dest_path. */ | |
457 | static char *get_local_name(struct file_list *flist, char *dest_path) | |
c627d613 | 458 | { |
7a6421fa | 459 | STRUCT_STAT st; |
eb598fac | 460 | char *cp; |
c627d613 | 461 | |
eb598fac WD |
462 | if (verbose > 2) { |
463 | rprintf(FINFO, "get_local_name count=%d %s\n", | |
464 | flist->count, NS(dest_path)); | |
465 | } | |
1f0610ef | 466 | |
ee8e2b15 | 467 | if (!dest_path || list_only) |
1f0610ef | 468 | return NULL; |
c95da96a | 469 | |
eb598fac WD |
470 | /* If the destination path refers to an existing directory, enter |
471 | * it and use mode 1. If there is something other than a directory | |
472 | * at the destination path, we must be transferring one file | |
473 | * (anything at the destination will be overwritten). */ | |
474 | if (do_stat(dest_path, &st) == 0) { | |
1ff5450d | 475 | if (S_ISDIR(st.st_mode)) { |
eb598fac | 476 | if (!push_dir(dest_path)) { |
982e05bb | 477 | rsyserr(FERROR, errno, "push_dir#1 %s failed", |
eb598fac | 478 | full_fname(dest_path)); |
65417579 | 479 | exit_cleanup(RERR_FILESELECT); |
1ff5450d | 480 | } |
b24498ec WD |
481 | if (sanitize_paths) |
482 | startdir_depth = count_dir_elements(dest_path); | |
1ff5450d AT |
483 | return NULL; |
484 | } | |
485 | if (flist->count > 1) { | |
eb598fac WD |
486 | rprintf(FERROR, |
487 | "ERROR: destination must be a directory when" | |
488 | " copying more than 1 file\n"); | |
65417579 | 489 | exit_cleanup(RERR_FILESELECT); |
1ff5450d | 490 | } |
44c26bf2 WD |
491 | /* Caution: flist->count could be 0! */ |
492 | if (flist->count == 1 && S_ISDIR(flist->files[0]->mode)) { | |
493 | rprintf(FERROR, | |
494 | "ERROR: cannot overwrite non-directory" | |
495 | " with a directory\n"); | |
496 | exit_cleanup(RERR_FILESELECT); | |
497 | } | |
cc8c5057 WD |
498 | } else if (errno != ENOENT) { |
499 | rsyserr(FERROR, errno, "cannot stat destination %s", | |
500 | full_fname(dest_path)); | |
501 | exit_cleanup(RERR_FILESELECT); | |
1ff5450d AT |
502 | } |
503 | ||
eb598fac WD |
504 | cp = strrchr(dest_path, '/'); |
505 | ||
506 | /* If the destination path ends in a slash or we are transferring | |
507 | * multiple files, create a directory at the destination path, | |
508 | * enter the new directory, and use mode 1. */ | |
509 | if (flist->count > 1 || (cp && !cp[1])) { | |
510 | /* Lop off the final slash (if any). */ | |
511 | if (cp && !cp[1]) | |
512 | *cp = '\0'; | |
513 | ||
05278935 | 514 | if (mkdir_defmode(dest_path) != 0) { |
eb598fac WD |
515 | rsyserr(FERROR, errno, "mkdir %s failed", |
516 | full_fname(dest_path)); | |
517 | exit_cleanup(RERR_FILEIO); | |
518 | } | |
1ff5450d | 519 | |
eb598fac WD |
520 | if (verbose) |
521 | rprintf(FINFO, "created directory %s\n", dest_path); | |
522 | ||
523 | if (dry_run) { | |
524 | /* Indicate that the destination directory doesn't | |
525 | * really exist and return mode 1. */ | |
526 | dry_run++; | |
527 | return NULL; | |
528 | } | |
529 | ||
530 | if (!push_dir(dest_path)) { | |
531 | rsyserr(FERROR, errno, "push_dir#2 %s failed", | |
532 | full_fname(dest_path)); | |
533 | exit_cleanup(RERR_FILESELECT); | |
534 | } | |
b24498ec WD |
535 | if (sanitize_paths) |
536 | startdir_depth = count_dir_elements(dest_path); | |
e5a96f0f | 537 | |
e5a96f0f | 538 | return NULL; |
1ff5450d AT |
539 | } |
540 | ||
eb598fac WD |
541 | /* Otherwise, we are writing a single file, possibly on top of an |
542 | * existing non-directory. Change to the item's parent directory | |
543 | * (if it has a path component), return the basename of the | |
544 | * destination file as the local name, and use mode 2. */ | |
545 | if (!cp) | |
546 | return dest_path; | |
547 | ||
548 | if (cp == dest_path) | |
549 | dest_path = "/"; | |
550 | ||
551 | *cp = '\0'; | |
552 | if (!push_dir(dest_path)) { | |
553 | rsyserr(FERROR, errno, "push_dir#3 %s failed", | |
554 | full_fname(dest_path)); | |
65417579 | 555 | exit_cleanup(RERR_FILESELECT); |
1ff5450d | 556 | } |
b24498ec WD |
557 | if (sanitize_paths) |
558 | startdir_depth = count_dir_elements(dest_path); | |
eb598fac | 559 | *cp = '/'; |
1ff5450d | 560 | |
eb598fac | 561 | return cp + 1; |
c627d613 AT |
562 | } |
563 | ||
564 | ||
1a8e5c97 | 565 | /* This is only called by the sender. */ |
3485ae83 | 566 | static void read_final_goodbye(int f_in, int f_out) |
4e0fcd85 | 567 | { |
1a8e5c97 WD |
568 | int i; |
569 | ||
570 | if (protocol_version < 29) | |
571 | i = read_int(f_in); | |
572 | else { | |
3485ae83 | 573 | while ((i = read_int(f_in)) == the_file_list->count |
1a8e5c97 WD |
574 | && read_shortint(f_in) == ITEM_IS_NEW) { |
575 | /* Forward the keep-alive (no-op) to the receiver. */ | |
3485ae83 | 576 | write_int(f_out, the_file_list->count); |
1a8e5c97 WD |
577 | write_shortint(f_out, ITEM_IS_NEW); |
578 | } | |
4e0fcd85 WD |
579 | } |
580 | ||
1a8e5c97 | 581 | if (i != -1) { |
c7791b8c WD |
582 | rprintf(FERROR, "Invalid packet at end of run (%d) [%s]\n", |
583 | i, who_am_i()); | |
1a8e5c97 | 584 | exit_cleanup(RERR_PROTOCOL); |
4e0fcd85 WD |
585 | } |
586 | } | |
587 | ||
588 | ||
eb598fac | 589 | static void do_server_sender(int f_in, int f_out, int argc, char *argv[]) |
c627d613 | 590 | { |
7a6421fa AT |
591 | struct file_list *flist; |
592 | char *dir = argv[0]; | |
c627d613 | 593 | |
45e08edb WD |
594 | if (verbose > 2) { |
595 | rprintf(FINFO, "server_sender starting pid=%ld\n", | |
596 | (long)getpid()); | |
597 | } | |
d9c7edf6 | 598 | |
2adbcdc7 | 599 | if (am_daemon && lp_write_only(module_id)) { |
7a92ded3 WD |
600 | rprintf(FERROR, "ERROR: module is write only\n"); |
601 | exit_cleanup(RERR_SYNTAX); | |
602 | return; | |
603 | } | |
bf26aa22 WD |
604 | if (am_daemon && lp_read_only(module_id) && remove_sent_files) { |
605 | rprintf(FERROR, | |
606 | "ERROR: --remove-sent-files cannot be used with a read-only module\n"); | |
607 | exit_cleanup(RERR_SYNTAX); | |
608 | return; | |
609 | } | |
7a92ded3 | 610 | |
59187666 | 611 | if (!relative_paths && !push_dir(dir)) { |
982e05bb WD |
612 | rsyserr(FERROR, errno, "push_dir#3 %s failed", |
613 | full_fname(dir)); | |
65417579 | 614 | exit_cleanup(RERR_FILESELECT); |
7a6421fa AT |
615 | } |
616 | argc--; | |
617 | argv++; | |
d9c7edf6 | 618 | |
48a1ff0d | 619 | if (argc == 0 && (recurse || list_only)) { |
e1f67417 | 620 | argc = 1; |
7a6421fa AT |
621 | argv--; |
622 | argv[0] = "."; | |
623 | } | |
d9c7edf6 | 624 | |
7a6421fa | 625 | flist = send_file_list(f_out,argc,argv); |
8d9dc9f9 AT |
626 | if (!flist || flist->count == 0) { |
627 | exit_cleanup(0); | |
628 | } | |
a00628b3 | 629 | the_file_list = flist; |
8d9dc9f9 | 630 | |
da3478b2 WD |
631 | io_start_buffering_in(); |
632 | io_start_buffering_out(); | |
633 | ||
7a6421fa | 634 | send_files(flist,f_out,f_in); |
f1e3656e | 635 | io_flush(FULL_FLUSH); |
33c4b445 | 636 | handle_stats(f_out); |
4e0fcd85 | 637 | if (protocol_version >= 24) |
3485ae83 | 638 | read_final_goodbye(f_in, f_out); |
f1e3656e | 639 | io_flush(FULL_FLUSH); |
7a6421fa | 640 | exit_cleanup(0); |
c627d613 AT |
641 | } |
642 | ||
643 | ||
dc5ddbcc AT |
644 | static int do_recv(int f_in,int f_out,struct file_list *flist,char *local_name) |
645 | { | |
d186eb1a | 646 | int pid; |
84e6d6fd | 647 | int exit_code = 0; |
c70e07d9 | 648 | int error_pipe[2]; |
dc5ddbcc | 649 | |
bb6721dc WD |
650 | /* The receiving side mustn't obey this, or an existing symlink that |
651 | * points to an identical file won't be replaced by the referent. */ | |
a695b379 | 652 | copy_links = copy_dirlinks = 0; |
bb6721dc | 653 | |
d186eb1a | 654 | if (preserve_hard_links) |
3485ae83 | 655 | init_hard_links(); |
dc5ddbcc | 656 | |
c70e07d9 | 657 | if (fd_pair(error_pipe) < 0) { |
ab759cd2 | 658 | rsyserr(FERROR, errno, "pipe failed in do_recv"); |
c8f2f857 | 659 | exit_cleanup(RERR_IPC); |
554e0a8d | 660 | } |
d9c7edf6 | 661 | |
f1e3656e | 662 | io_flush(NORMAL_FLUSH); |
c6e7fcb4 | 663 | |
ba449e44 | 664 | if ((pid = do_fork()) == -1) { |
c8f2f857 | 665 | rsyserr(FERROR, errno, "fork failed in do_recv"); |
ba449e44 WD |
666 | exit_cleanup(RERR_IPC); |
667 | } | |
668 | ||
669 | if (pid == 0) { | |
554e0a8d | 670 | close(error_pipe[0]); |
3a69fad0 WD |
671 | if (f_in != f_out) |
672 | close(f_out); | |
e08c9610 | 673 | |
554e0a8d | 674 | /* we can't let two processes write to the socket at one time */ |
9eeb3b9c | 675 | close_multiplexing_out(); |
554e0a8d AT |
676 | |
677 | /* set place to send errors */ | |
f1e3656e | 678 | set_msg_fd_out(error_pipe[1]); |
554e0a8d | 679 | |
c70e07d9 | 680 | recv_files(f_in, flist, local_name); |
f1e3656e | 681 | io_flush(FULL_FLUSH); |
33c4b445 | 682 | handle_stats(f_in); |
e08c9610 | 683 | |
f1e3656e WD |
684 | send_msg(MSG_DONE, "", 0); |
685 | io_flush(FULL_FLUSH); | |
4e0fcd85 | 686 | |
40df65fd WD |
687 | /* Handle any keep-alive packets from the post-processing work |
688 | * that the generator does. */ | |
4e0fcd85 | 689 | if (protocol_version >= 29) { |
051182cb | 690 | kluge_around_eof = -1; |
1a8e5c97 WD |
691 | |
692 | /* This should only get stopped via a USR2 signal. */ | |
693 | while (read_int(f_in) == flist->count | |
694 | && read_shortint(f_in) == ITEM_IS_NEW) {} | |
695 | ||
3485ae83 WD |
696 | rprintf(FERROR, "Invalid packet at end of run [%s]\n", |
697 | who_am_i()); | |
1a8e5c97 | 698 | exit_cleanup(RERR_PROTOCOL); |
4e0fcd85 WD |
699 | } |
700 | ||
9e0582f9 WD |
701 | /* Finally, we go to sleep until our parent kills us with a |
702 | * USR2 signal. We sleep for a short time, as on some OSes | |
703 | * a signal won't interrupt a sleep! */ | |
f1e3656e WD |
704 | while (1) |
705 | msleep(20); | |
d186eb1a | 706 | } |
dc5ddbcc | 707 | |
b695f242 | 708 | am_generator = 1; |
9eeb3b9c | 709 | close_multiplexing_in(); |
e8a96e27 | 710 | if (write_batch && !am_server) |
b9f592fb | 711 | stop_write_batch(); |
b695f242 | 712 | |
554e0a8d | 713 | close(error_pipe[1]); |
3a69fad0 WD |
714 | if (f_in != f_out) |
715 | close(f_in); | |
e1b3d5c4 | 716 | |
da3478b2 | 717 | io_start_buffering_out(); |
b3e10ed7 | 718 | |
f1e3656e | 719 | set_msg_fd_in(error_pipe[0]); |
554e0a8d | 720 | |
c70e07d9 | 721 | generate_files(f_out, flist, local_name); |
8d9dc9f9 | 722 | |
33c4b445 | 723 | handle_stats(-1); |
f1e3656e | 724 | io_flush(FULL_FLUSH); |
d04e9c51 | 725 | if (protocol_version >= 24) { |
8ada7518 AT |
726 | /* send a final goodbye message */ |
727 | write_int(f_out, -1); | |
728 | } | |
f1e3656e | 729 | io_flush(FULL_FLUSH); |
8ada7518 | 730 | |
f1e3656e | 731 | set_msg_fd_in(-1); |
089a2435 | 732 | kill(pid, SIGUSR2); |
84e6d6fd WD |
733 | wait_process_with_flush(pid, &exit_code); |
734 | return exit_code; | |
dc5ddbcc AT |
735 | } |
736 | ||
c627d613 | 737 | |
9486289c | 738 | static void do_server_recv(int f_in, int f_out, int argc,char *argv[]) |
c627d613 | 739 | { |
84e6d6fd | 740 | int exit_code; |
7a6421fa | 741 | struct file_list *flist; |
6c2e5b56 | 742 | char *local_name = NULL; |
7a6421fa | 743 | char *dir = NULL; |
07bff66f WD |
744 | int save_verbose = verbose; |
745 | ||
746 | if (filesfrom_fd >= 0) { | |
747 | /* We can't mix messages with files-from data on the socket, | |
748 | * so temporarily turn off verbose messages. */ | |
749 | verbose = 0; | |
750 | } | |
f0fca04e | 751 | |
45e08edb WD |
752 | if (verbose > 2) { |
753 | rprintf(FINFO, "server_recv(%d) starting pid=%ld\n", | |
754 | argc, (long)getpid()); | |
755 | } | |
09b7f5db | 756 | |
2adbcdc7 | 757 | if (am_daemon && lp_read_only(module_id)) { |
09b7f5db AT |
758 | rprintf(FERROR,"ERROR: module is read only\n"); |
759 | exit_cleanup(RERR_SYNTAX); | |
760 | return; | |
761 | } | |
762 | ||
7a6421fa AT |
763 | if (argc > 0) { |
764 | dir = argv[0]; | |
765 | argc--; | |
766 | argv++; | |
59187666 | 767 | if (!am_daemon && !push_dir(dir)) { |
982e05bb WD |
768 | rsyserr(FERROR, errno, "push_dir#4 %s failed", |
769 | full_fname(dir)); | |
65417579 | 770 | exit_cleanup(RERR_FILESELECT); |
d9c7edf6 | 771 | } |
7a6421fa | 772 | } |
c627d613 | 773 | |
da3478b2 | 774 | io_start_buffering_in(); |
57dee64e | 775 | recv_filter_list(f_in); |
c627d613 | 776 | |
7c2a9e76 | 777 | if (filesfrom_fd >= 0) { |
07bff66f WD |
778 | /* We need to send the files-from names to the sender at the |
779 | * same time that we receive the file-list from them, so we | |
780 | * need the IO routines to automatically write out the names | |
781 | * onto our f_out socket as we read the file-list. This | |
782 | * avoids both deadlock and extra delays/buffers. */ | |
7c2a9e76 WD |
783 | io_set_filesfrom_fds(filesfrom_fd, f_out); |
784 | filesfrom_fd = -1; | |
785 | } | |
786 | ||
b9f592fb | 787 | flist = recv_file_list(f_in); |
07bff66f | 788 | verbose = save_verbose; |
4c36a13e AT |
789 | if (!flist) { |
790 | rprintf(FERROR,"server_recv: recv_file_list error\n"); | |
65417579 | 791 | exit_cleanup(RERR_FILESELECT); |
7a6421fa | 792 | } |
a00628b3 | 793 | the_file_list = flist; |
d9c7edf6 | 794 | |
29fad7a3 | 795 | if (argc > 0) |
7a6421fa | 796 | local_name = get_local_name(flist,argv[0]); |
c627d613 | 797 | |
7c58c991 WD |
798 | /* Now that we know what our destination directory turned out to be, |
799 | * we can sanitize the --link-/copy-/compare-dest args correctly. */ | |
800 | if (sanitize_paths) { | |
7c58c991 WD |
801 | char **dir; |
802 | for (dir = basis_dir; *dir; dir++) | |
b24498ec | 803 | *dir = sanitize_path(NULL, *dir, NULL, startdir_depth); |
7c58c991 WD |
804 | } |
805 | ||
84e6d6fd WD |
806 | exit_code = do_recv(f_in,f_out,flist,local_name); |
807 | exit_cleanup(exit_code); | |
c627d613 AT |
808 | } |
809 | ||
810 | ||
734a94a2 | 811 | int child_main(int argc, char *argv[]) |
25d34a5c MP |
812 | { |
813 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); | |
734a94a2 | 814 | return 0; |
25d34a5c MP |
815 | } |
816 | ||
817 | ||
9486289c | 818 | void start_server(int f_in, int f_out, int argc, char *argv[]) |
366345fe | 819 | { |
f0359dd0 AT |
820 | set_nonblocking(f_in); |
821 | set_nonblocking(f_out); | |
822 | ||
da3478b2 WD |
823 | io_set_sock_fds(f_in, f_out); |
824 | setup_protocol(f_out, f_in); | |
595251de | 825 | #if defined HAVE_ICONV_OPEN && defined HAVE_ICONV_H |
9656de5d WD |
826 | setup_iconv(); |
827 | #endif | |
da3478b2 | 828 | |
d04e9c51 | 829 | if (protocol_version >= 23) |
da3478b2 | 830 | io_start_multiplex_out(); |
7a6421fa | 831 | |
7a6421fa | 832 | if (am_sender) { |
83926d3c | 833 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
bf26aa22 WD |
834 | if (need_messages_from_generator) |
835 | io_start_multiplex_in(); | |
9b3318b0 | 836 | |
7842418b | 837 | recv_filter_list(f_in); |
7a6421fa AT |
838 | do_server_sender(f_in, f_out, argc, argv); |
839 | } else { | |
840 | do_server_recv(f_in, f_out, argc, argv); | |
841 | } | |
842 | exit_cleanup(0); | |
366345fe AT |
843 | } |
844 | ||
0ba48136 MP |
845 | |
846 | /* | |
847 | * This is called once the connection has been negotiated. It is used | |
848 | * for rsyncd, remote-shell, and local connections. | |
849 | */ | |
19b27a48 | 850 | int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[]) |
9486289c | 851 | { |
088aac85 | 852 | struct file_list *flist = NULL; |
84e6d6fd | 853 | int exit_code = 0, exit_code2 = 0; |
9486289c | 854 | char *local_name = NULL; |
19b27a48 AT |
855 | |
856 | cleanup_child_pid = pid; | |
67a28eb2 | 857 | if (!read_batch) { |
b9f592fb WD |
858 | set_nonblocking(f_in); |
859 | set_nonblocking(f_out); | |
860 | } | |
f0359dd0 | 861 | |
da3478b2 | 862 | io_set_sock_fds(f_in, f_out); |
6d7b6081 | 863 | setup_protocol(f_out,f_in); |
595251de | 864 | #if defined HAVE_ICONV_OPEN && defined HAVE_ICONV_H |
9656de5d WD |
865 | setup_iconv(); |
866 | #endif | |
6d7b6081 | 867 | |
b9f592fb | 868 | if (protocol_version >= 23 && !read_batch) |
da3478b2 | 869 | io_start_multiplex_in(); |
d9c7edf6 | 870 | |
18882701 WD |
871 | /* We set our stderr file handle to blocking because ssh might have |
872 | * set it to non-blocking. This can be particularly troublesome if | |
873 | * stderr is a clone of stdout, because ssh would have set our stdout | |
874 | * to non-blocking at the same time (which can easily cause us to lose | |
875 | * output from our print statements). This kluge shouldn't cause ssh | |
876 | * any problems for how we use it. Note also that we delayed setting | |
877 | * this until after the above protocol setup so that we know for sure | |
878 | * that ssh is done twiddling its file descriptors. */ | |
879 | set_blocking(STDERR_FILENO); | |
880 | ||
9486289c | 881 | if (am_sender) { |
83926d3c | 882 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
da3478b2 | 883 | io_start_buffering_out(); |
860236bf | 884 | if (!filesfrom_host) |
a0a33ee5 | 885 | set_msg_fd_in(f_in); |
57dee64e | 886 | send_filter_list(f_out); |
860236bf | 887 | if (filesfrom_host) |
7c2a9e76 | 888 | filesfrom_fd = f_in; |
b9f592fb | 889 | |
e8a96e27 | 890 | if (write_batch && !am_server) |
b9f592fb | 891 | start_write_batch(f_out); |
a00628b3 | 892 | flist = send_file_list(f_out, argc, argv); |
a0a33ee5 | 893 | set_msg_fd_in(-1); |
d9c7edf6 | 894 | if (verbose > 3) |
9486289c | 895 | rprintf(FINFO,"file list sent\n"); |
a00628b3 | 896 | the_file_list = flist; |
e1b3d5c4 | 897 | |
f1e3656e | 898 | io_flush(NORMAL_FLUSH); |
9486289c | 899 | send_files(flist,f_out,f_in); |
f1e3656e | 900 | io_flush(FULL_FLUSH); |
33c4b445 | 901 | handle_stats(-1); |
4e0fcd85 | 902 | if (protocol_version >= 24) |
3485ae83 | 903 | read_final_goodbye(f_in, f_out); |
9486289c AT |
904 | if (pid != -1) { |
905 | if (verbose > 3) | |
08a740ff | 906 | rprintf(FINFO,"client_run waiting on %d\n", (int) pid); |
f1e3656e | 907 | io_flush(FULL_FLUSH); |
84e6d6fd | 908 | wait_process_with_flush(pid, &exit_code); |
9486289c | 909 | } |
33c4b445 | 910 | output_summary(); |
c87ae64a | 911 | io_flush(FULL_FLUSH); |
84e6d6fd | 912 | exit_cleanup(exit_code); |
9486289c | 913 | } |
f7632fc6 | 914 | |
bf26aa22 WD |
915 | if (need_messages_from_generator && !read_batch) |
916 | io_start_multiplex_out(); | |
917 | ||
48a1ff0d WD |
918 | if (argc == 0) |
919 | list_only |= 1; | |
d9c7edf6 | 920 | |
57dee64e | 921 | send_filter_list(read_batch ? -1 : f_out); |
d9c7edf6 | 922 | |
7c2a9e76 WD |
923 | if (filesfrom_fd >= 0) { |
924 | io_set_filesfrom_fds(filesfrom_fd, f_out); | |
925 | filesfrom_fd = -1; | |
926 | } | |
927 | ||
e8a96e27 | 928 | if (write_batch && !am_server) |
b9f592fb | 929 | start_write_batch(f_in); |
9486289c | 930 | flist = recv_file_list(f_in); |
a00628b3 | 931 | the_file_list = flist; |
d9c7edf6 | 932 | |
9d19f8a5 WD |
933 | if (flist && flist->count > 0) { |
934 | local_name = get_local_name(flist, argv[0]); | |
d9c7edf6 | 935 | |
84e6d6fd | 936 | exit_code2 = do_recv(f_in, f_out, flist, local_name); |
9d19f8a5 WD |
937 | } else { |
938 | handle_stats(-1); | |
939 | output_summary(); | |
940 | } | |
d9c7edf6 | 941 | |
9486289c | 942 | if (pid != -1) { |
8d9dc9f9 | 943 | if (verbose > 3) |
08a740ff | 944 | rprintf(FINFO,"client_run2 waiting on %d\n", (int) pid); |
f1e3656e | 945 | io_flush(FULL_FLUSH); |
84e6d6fd | 946 | wait_process_with_flush(pid, &exit_code); |
9486289c | 947 | } |
d9c7edf6 | 948 | |
84e6d6fd | 949 | return MAX(exit_code, exit_code2); |
9486289c AT |
950 | } |
951 | ||
7169bb4a MP |
952 | static int copy_argv (char *argv[]) |
953 | { | |
954 | int i; | |
955 | ||
956 | for (i = 0; argv[i]; i++) { | |
957 | if (!(argv[i] = strdup(argv[i]))) { | |
958 | rprintf (FERROR, "out of memory at %s(%d)\n", | |
959 | __FILE__, __LINE__); | |
960 | return RERR_MALLOC; | |
961 | } | |
962 | } | |
963 | ||
964 | return 0; | |
965 | } | |
966 | ||
967 | ||
c1a04ecb | 968 | /** |
0ba48136 MP |
969 | * Start a client for either type of remote connection. Work out |
970 | * whether the arguments request a remote shell or rsyncd connection, | |
971 | * and call the appropriate connection function, then run_client. | |
0b4af330 MP |
972 | * |
973 | * Calls either start_socket_client (for sockets) or do_cmd and | |
974 | * client_run (for ssh). | |
c1a04ecb | 975 | **/ |
fc8a6b97 | 976 | static int start_client(int argc, char *argv[]) |
5d6bcd44 AT |
977 | { |
978 | char *p; | |
979 | char *shell_machine = NULL; | |
980 | char *shell_path = NULL; | |
981 | char *shell_user = NULL; | |
19b27a48 AT |
982 | int ret; |
983 | pid_t pid; | |
5d6bcd44 | 984 | int f_in,f_out; |
7169bb4a MP |
985 | int rc; |
986 | ||
987 | /* Don't clobber argv[] so that ps(1) can still show the right | |
d9c7edf6 | 988 | * command line. */ |
75aeac44 | 989 | if ((rc = copy_argv(argv))) |
7169bb4a | 990 | return rc; |
5d6bcd44 | 991 | |
d16c245f | 992 | if (!read_batch) { /* for read_batch, NO source is specified */ |
860236bf WD |
993 | shell_path = check_for_hostspec(argv[0], &shell_machine, &rsync_port); |
994 | if (shell_path) { /* source is remote */ | |
9425918d WD |
995 | char *dummy1; |
996 | int dummy2; | |
ee8e2b15 WD |
997 | if (--argc |
998 | && check_for_hostspec(argv[argc], &dummy1, &dummy2)) { | |
9425918d WD |
999 | rprintf(FERROR, |
1000 | "The source and destination cannot both be remote.\n"); | |
1001 | exit_cleanup(RERR_SYNTAX); | |
1002 | } | |
42ccb4c0 | 1003 | argv++; |
860236bf WD |
1004 | if (filesfrom_host && *filesfrom_host |
1005 | && strcmp(filesfrom_host, shell_machine) != 0) { | |
7c2a9e76 | 1006 | rprintf(FERROR, |
50b31539 | 1007 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
1008 | exit_cleanup(RERR_SYNTAX); |
1009 | } | |
860236bf | 1010 | if (rsync_port) { |
d9c7edf6 | 1011 | if (!shell_cmd) { |
860236bf WD |
1012 | return start_socket_client(shell_machine, |
1013 | shell_path, | |
42ccb4c0 | 1014 | argc, argv); |
d9c7edf6 | 1015 | } |
d9c7edf6 | 1016 | daemon_over_rsh = 1; |
75aeac44 | 1017 | } |
3591c066 | 1018 | |
42ccb4c0 WD |
1019 | am_sender = 0; |
1020 | } else { /* source is local, check dest arg */ | |
1021 | am_sender = 1; | |
1022 | ||
ee8e2b15 WD |
1023 | if (argc > 1) |
1024 | p = argv[--argc]; | |
1025 | else { | |
1026 | p = "."; | |
1027 | list_only = 1; | |
d9c7edf6 | 1028 | } |
a125c82a | 1029 | |
ee8e2b15 | 1030 | shell_path = check_for_hostspec(p, &shell_machine, &rsync_port); |
860236bf WD |
1031 | if (shell_path && filesfrom_host && *filesfrom_host |
1032 | && strcmp(filesfrom_host, shell_machine) != 0) { | |
7c2a9e76 | 1033 | rprintf(FERROR, |
50b31539 | 1034 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
1035 | exit_cleanup(RERR_SYNTAX); |
1036 | } | |
860236bf | 1037 | if (!shell_path) { /* no hostspec found, so src & dest are local */ |
d9c7edf6 | 1038 | local_server = 1; |
860236bf | 1039 | if (filesfrom_host) { |
7c2a9e76 | 1040 | rprintf(FERROR, |
50b31539 | 1041 | "--files-from cannot be remote when the transfer is local\n"); |
7c2a9e76 WD |
1042 | exit_cleanup(RERR_SYNTAX); |
1043 | } | |
860236bf | 1044 | shell_machine = NULL; |
ee8e2b15 | 1045 | shell_path = p; |
860236bf | 1046 | } else if (rsync_port) { |
d9c7edf6 | 1047 | if (!shell_cmd) { |
860236bf WD |
1048 | return start_socket_client(shell_machine, |
1049 | shell_path, | |
42ccb4c0 | 1050 | argc, argv); |
d9c7edf6 | 1051 | } |
d9c7edf6 | 1052 | daemon_over_rsh = 1; |
a125c82a | 1053 | } |
5d6bcd44 | 1054 | } |
d16c245f | 1055 | } else { /* read_batch */ |
d9c7edf6 WD |
1056 | local_server = 1; |
1057 | shell_path = argv[argc-1]; | |
860236bf | 1058 | if (check_for_hostspec(shell_path, &shell_machine, &rsync_port)) { |
b9f592fb WD |
1059 | rprintf(FERROR, "remote destination is not allowed with --read-batch\n"); |
1060 | exit_cleanup(RERR_SYNTAX); | |
1061 | } | |
6902ed17 MP |
1062 | } |
1063 | ||
5d6bcd44 | 1064 | if (shell_machine) { |
6fc048f4 | 1065 | p = strrchr(shell_machine,'@'); |
5d6bcd44 AT |
1066 | if (p) { |
1067 | *p = 0; | |
1068 | shell_user = shell_machine; | |
1069 | shell_machine = p+1; | |
1070 | } | |
1071 | } | |
1072 | ||
1073 | if (verbose > 3) { | |
9486289c | 1074 | rprintf(FINFO,"cmd=%s machine=%s user=%s path=%s\n", |
45c49b52 WD |
1075 | shell_cmd ? shell_cmd : "", |
1076 | shell_machine ? shell_machine : "", | |
1077 | shell_user ? shell_user : "", | |
1078 | shell_path ? shell_path : ""); | |
5d6bcd44 | 1079 | } |
d9c7edf6 | 1080 | |
d16c245f | 1081 | /* for remote source, only single dest arg can remain ... */ |
f7632fc6 | 1082 | if (!am_sender && argc > 1) { |
5d6bcd44 | 1083 | usage(FERROR); |
65417579 | 1084 | exit_cleanup(RERR_SYNTAX); |
5d6bcd44 | 1085 | } |
27e3e9c9 | 1086 | |
d16c245f | 1087 | /* ... or no dest at all */ |
48a1ff0d WD |
1088 | if (!am_sender && argc == 0) |
1089 | list_only |= 1; | |
d9c7edf6 | 1090 | |
75aeac44 WD |
1091 | pid = do_cmd(shell_cmd,shell_machine,shell_user,shell_path, |
1092 | &f_in,&f_out); | |
1093 | ||
1094 | /* if we're running an rsync server on the remote host over a | |
9af87151 | 1095 | * remote shell command, we need to do the RSYNCD protocol first */ |
75aeac44 WD |
1096 | if (daemon_over_rsh) { |
1097 | int tmpret; | |
1098 | tmpret = start_inband_exchange(shell_user, shell_path, | |
1099 | f_in, f_out, argc); | |
1100 | if (tmpret < 0) | |
1101 | return tmpret; | |
1102 | } | |
1103 | ||
fc8a6b97 AT |
1104 | ret = client_run(f_in, f_out, pid, argc, argv); |
1105 | ||
1106 | fflush(stdout); | |
1107 | fflush(stderr); | |
1108 | ||
1109 | return ret; | |
5d6bcd44 AT |
1110 | } |
1111 | ||
366345fe | 1112 | |
067669da WD |
1113 | static RETSIGTYPE sigusr1_handler(UNUSED(int val)) |
1114 | { | |
6bf32edb | 1115 | exit_cleanup(RERR_SIGNAL1); |
82306bf6 AT |
1116 | } |
1117 | ||
067669da WD |
1118 | static RETSIGTYPE sigusr2_handler(UNUSED(int val)) |
1119 | { | |
33c4b445 WD |
1120 | if (!am_server) |
1121 | output_summary(); | |
40df65fd | 1122 | close_all(); |
33c4b445 WD |
1123 | if (log_got_error) |
1124 | _exit(RERR_PARTIAL); | |
8b35435f AT |
1125 | _exit(0); |
1126 | } | |
1127 | ||
6d59ac19 | 1128 | RETSIGTYPE remember_children(UNUSED(int val)) |
067669da | 1129 | { |
029c1713 | 1130 | #ifdef WNOHANG |
ee7118a8 DD |
1131 | int cnt, status; |
1132 | pid_t pid; | |
1133 | /* An empty waitpid() loop was put here by Tridge and we could never | |
d9c7edf6 | 1134 | * get him to explain why he put it in, so rather than taking it |
ee7118a8 DD |
1135 | * out we're instead saving the child exit statuses for later use. |
1136 | * The waitpid() loop presumably eliminates all possibility of leaving | |
97d8e709 | 1137 | * zombie children, maybe that's why he did it. */ |
ee7118a8 | 1138 | while ((pid = waitpid(-1, &status, WNOHANG)) > 0) { |
9af87151 WD |
1139 | /* save the child's exit status */ |
1140 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { | |
1141 | if (pid_stat_table[cnt].pid == 0) { | |
1142 | pid_stat_table[cnt].pid = pid; | |
1143 | pid_stat_table[cnt].status = status; | |
1144 | break; | |
1145 | } | |
1146 | } | |
ee7118a8 | 1147 | } |
029c1713 | 1148 | #endif |
8261af74 | 1149 | #ifndef HAVE_SIGACTION |
6d59ac19 | 1150 | signal(SIGCHLD, remember_children); |
60ee01f5 | 1151 | #endif |
19b27a48 AT |
1152 | } |
1153 | ||
c0531332 MP |
1154 | |
1155 | /** | |
1156 | * This routine catches signals and tries to send them to gdb. | |
1157 | * | |
1158 | * Because it's called from inside a signal handler it ought not to | |
1159 | * use too many library routines. | |
1160 | * | |
1161 | * @todo Perhaps use "screen -X" instead/as well, to help people | |
1162 | * debugging without easy access to X. Perhaps use an environment | |
1163 | * variable, or just call a script? | |
1164 | * | |
1165 | * @todo The /proc/ magic probably only works on Linux (and | |
1166 | * Solaris?) Can we be more portable? | |
1167 | **/ | |
1168 | #ifdef MAINTAINER_MODE | |
4fdc39dd MP |
1169 | const char *get_panic_action(void) |
1170 | { | |
1171 | const char *cmd_fmt = getenv("RSYNC_PANIC_ACTION"); | |
1172 | ||
1173 | if (cmd_fmt) | |
1174 | return cmd_fmt; | |
1175 | else | |
1176 | return "xterm -display :0 -T Panic -n Panic " | |
1177 | "-e gdb /proc/%d/exe %d"; | |
1178 | } | |
1179 | ||
1180 | ||
9fb3f7a9 MP |
1181 | /** |
1182 | * Handle a fatal signal by launching a debugger, controlled by $RSYNC_PANIC_ACTION. | |
1183 | * | |
1184 | * This signal handler is only installed if we were configured with | |
1185 | * --enable-maintainer-mode. Perhaps it should always be on and we | |
1186 | * should just look at the environment variable, but I'm a bit leery | |
1187 | * of a signal sending us into a busy loop. | |
1188 | **/ | |
067669da | 1189 | static RETSIGTYPE rsync_panic_handler(UNUSED(int whatsig)) |
c0531332 MP |
1190 | { |
1191 | char cmd_buf[300]; | |
1192 | int ret; | |
4fdc39dd MP |
1193 | |
1194 | sprintf(cmd_buf, get_panic_action(), | |
c0531332 MP |
1195 | getpid(), getpid()); |
1196 | ||
1197 | /* Unless we failed to execute gdb, we allow the process to | |
1198 | * continue. I'm not sure if that's right. */ | |
1199 | ret = system(cmd_buf); | |
1200 | if (ret) | |
1201 | _exit(ret); | |
1202 | } | |
1203 | #endif | |
1204 | ||
1205 | ||
5d6bcd44 | 1206 | int main(int argc,char *argv[]) |
d9c7edf6 | 1207 | { |
ff81e809 | 1208 | int ret; |
66a9dc96 WD |
1209 | int orig_argc = argc; |
1210 | char **orig_argv = argv; | |
8261af74 WD |
1211 | #ifdef HAVE_SIGACTION |
1212 | # ifdef HAVE_SIGPROCMASK | |
60ee01f5 | 1213 | sigset_t sigmask; |
5d6bcd44 | 1214 | |
60ee01f5 | 1215 | sigemptyset(&sigmask); |
8261af74 | 1216 | # endif |
60ee01f5 WD |
1217 | sigact.sa_flags = SA_NOCLDSTOP; |
1218 | #endif | |
1219 | SIGACTMASK(SIGUSR1, sigusr1_handler); | |
1220 | SIGACTMASK(SIGUSR2, sigusr2_handler); | |
6d59ac19 | 1221 | SIGACTMASK(SIGCHLD, remember_children); |
c0531332 | 1222 | #ifdef MAINTAINER_MODE |
60ee01f5 WD |
1223 | SIGACTMASK(SIGSEGV, rsync_panic_handler); |
1224 | SIGACTMASK(SIGFPE, rsync_panic_handler); | |
1225 | SIGACTMASK(SIGABRT, rsync_panic_handler); | |
1226 | SIGACTMASK(SIGBUS, rsync_panic_handler); | |
1227 | #endif | |
5d6bcd44 | 1228 | |
7a6421fa | 1229 | starttime = time(NULL); |
6fe05820 | 1230 | am_root = (MY_UID() == 0); |
c627d613 | 1231 | |
a800434a AT |
1232 | memset(&stats, 0, sizeof(stats)); |
1233 | ||
df5e03da AT |
1234 | if (argc < 2) { |
1235 | usage(FERROR); | |
65417579 | 1236 | exit_cleanup(RERR_SYNTAX); |
df5e03da AT |
1237 | } |
1238 | ||
7a6421fa | 1239 | /* we set a 0 umask so that correct file permissions can be |
9af87151 | 1240 | * carried across */ |
05278935 | 1241 | orig_umask = umask(0); |
5d6bcd44 | 1242 | |
eb598fac WD |
1243 | #if defined CONFIG_LOCALE && defined HAVE_SETLOCALE |
1244 | setlocale(LC_CTYPE, ""); | |
1245 | #endif | |
1246 | ||
50135767 | 1247 | if (!parse_arguments(&argc, (const char ***) &argv, 1)) { |
d9c7edf6 WD |
1248 | /* FIXME: We ought to call the same error-handling |
1249 | * code here, rather than relying on getopt. */ | |
50135767 | 1250 | option_error(); |
65417579 | 1251 | exit_cleanup(RERR_SYNTAX); |
b11ed3b1 | 1252 | } |
5d6bcd44 | 1253 | |
60ee01f5 WD |
1254 | SIGACTMASK(SIGINT, sig_int); |
1255 | SIGACTMASK(SIGHUP, sig_int); | |
1256 | SIGACTMASK(SIGTERM, sig_int); | |
1257 | #if defined HAVE_SIGACTION && HAVE_SIGPROCMASK | |
1258 | sigprocmask(SIG_UNBLOCK, &sigmask, NULL); | |
1259 | #endif | |
6b83141d | 1260 | |
34758d5c MP |
1261 | /* Ignore SIGPIPE; we consistently check error codes and will |
1262 | * see the EPIPE. */ | |
60ee01f5 | 1263 | SIGACTION(SIGPIPE, SIG_IGN); |
55e54e46 WD |
1264 | #ifdef SIGXFSZ |
1265 | SIGACTION(SIGXFSZ, SIG_IGN); | |
1266 | #endif | |
34758d5c | 1267 | |
c226b7c2 | 1268 | /* Initialize push_dir here because on some old systems getcwd |
9af87151 WD |
1269 | * (implemented by forking "pwd" and reading its output) doesn't |
1270 | * work when there are other child processes. Also, on all systems | |
1271 | * that implement getcwd that way "pwd" can't be found after chroot. */ | |
59187666 | 1272 | push_dir(NULL); |
c226b7c2 | 1273 | |
44e9e221 WD |
1274 | init_flist(); |
1275 | ||
e8a96e27 | 1276 | if ((write_batch || read_batch) && !am_server) { |
b9f592fb | 1277 | if (write_batch) |
66a9dc96 | 1278 | write_batch_shell_file(orig_argc, orig_argv, argc); |
b9f592fb | 1279 | |
dbbab0c4 WD |
1280 | if (read_batch && strcmp(batch_name, "-") == 0) |
1281 | batch_fd = STDIN_FILENO; | |
1282 | else { | |
1283 | batch_fd = do_open(batch_name, | |
b9f592fb WD |
1284 | write_batch ? O_WRONLY | O_CREAT | O_TRUNC |
1285 | : O_RDONLY, S_IRUSR | S_IWUSR); | |
dbbab0c4 | 1286 | } |
b9f592fb WD |
1287 | if (batch_fd < 0) { |
1288 | rsyserr(FERROR, errno, "Batch file %s open error", | |
71903f60 | 1289 | full_fname(batch_name)); |
b9f592fb WD |
1290 | exit_cleanup(RERR_FILEIO); |
1291 | } | |
9459290a WD |
1292 | if (read_batch) |
1293 | read_stream_flags(batch_fd); | |
6902ed17 | 1294 | } |
e8a96e27 WD |
1295 | if (write_batch < 0) |
1296 | dry_run = 1; | |
6902ed17 | 1297 | |
75aeac44 | 1298 | if (am_daemon && !am_server) |
7a6421fa | 1299 | return daemon_main(); |
f0fca04e | 1300 | |
08ac228f AT |
1301 | if (argc < 1) { |
1302 | usage(FERROR); | |
65417579 | 1303 | exit_cleanup(RERR_SYNTAX); |
08ac228f AT |
1304 | } |
1305 | ||
7a6421fa | 1306 | if (am_server) { |
f0359dd0 AT |
1307 | set_nonblocking(STDIN_FILENO); |
1308 | set_nonblocking(STDOUT_FILENO); | |
75aeac44 WD |
1309 | if (am_daemon) |
1310 | return start_daemon(STDIN_FILENO, STDOUT_FILENO); | |
7a6421fa AT |
1311 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); |
1312 | } | |
c627d613 | 1313 | |
ff81e809 | 1314 | ret = start_client(argc, argv); |
d9c7edf6 | 1315 | if (ret == -1) |
9098bbf3 | 1316 | exit_cleanup(RERR_STARTCLIENT); |
088aac85 | 1317 | else |
9098bbf3 MP |
1318 | exit_cleanup(ret); |
1319 | ||
0f5a04e3 | 1320 | return ret; |
c627d613 | 1321 | } |