Commit | Line | Data |
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0ba48136 | 1 | /* -*- c-file-style: "linux" -*- |
d9c7edf6 | 2 | |
50135767 | 3 | Copyright (C) 1996-2001 by Andrew Tridgell <tridge@samba.org> |
c627d613 | 4 | Copyright (C) Paul Mackerras 1996 |
e5a2b854 | 5 | Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org> |
d9c7edf6 | 6 | |
c627d613 AT |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
d9c7edf6 | 11 | |
c627d613 AT |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
d9c7edf6 | 16 | |
c627d613 AT |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | */ | |
21 | ||
22 | #include "rsync.h" | |
23 | ||
f0fca04e | 24 | time_t starttime = 0; |
a800434a | 25 | |
50839b4b WD |
26 | extern int verbose; |
27 | extern int dry_run; | |
28 | extern int list_only; | |
32eda096 | 29 | extern int am_root; |
d9c7edf6 WD |
30 | extern int am_server; |
31 | extern int am_sender; | |
b695f242 | 32 | extern int am_generator; |
d9c7edf6 | 33 | extern int am_daemon; |
32eda096 | 34 | extern int blocking_io; |
bf26aa22 | 35 | extern int remove_sent_files; |
32eda096 | 36 | extern int daemon_over_rsh; |
bf26aa22 | 37 | extern int need_messages_from_generator; |
051182cb | 38 | extern int kluge_around_eof; |
32eda096 | 39 | extern int do_stats; |
32eda096 WD |
40 | extern int log_got_error; |
41 | extern int module_id; | |
42 | extern int orig_umask; | |
bb6721dc | 43 | extern int copy_links; |
83926d3c | 44 | extern int keep_dirlinks; |
32eda096 | 45 | extern int preserve_hard_links; |
d04e9c51 | 46 | extern int protocol_version; |
32eda096 | 47 | extern int recurse; |
06b96ffa | 48 | extern int fuzzy_basis; |
32eda096 WD |
49 | extern int relative_paths; |
50 | extern int rsync_port; | |
cb8240a2 | 51 | extern int inplace; |
38e3910b | 52 | extern int make_backups; |
b1df18d7 | 53 | extern int whole_file; |
32eda096 WD |
54 | extern int read_batch; |
55 | extern int write_batch; | |
b9f592fb | 56 | extern int batch_fd; |
c0d8e84c | 57 | extern int batch_gen_fd; |
32eda096 WD |
58 | extern int filesfrom_fd; |
59 | extern pid_t cleanup_child_pid; | |
50839b4b | 60 | extern struct stats stats; |
860236bf | 61 | extern char *filesfrom_host; |
7162c65d | 62 | extern char *partial_dir; |
c3fad2e2 | 63 | extern char *basis_dir[]; |
32eda096 WD |
64 | extern char *rsync_path; |
65 | extern char *shell_cmd; | |
9b3318b0 | 66 | extern char *batch_name; |
57dee64e WD |
67 | |
68 | int local_server = 0; | |
a00628b3 | 69 | struct file_list *the_file_list; |
c627d613 | 70 | |
91c5833b WD |
71 | /* There's probably never more than at most 2 outstanding child processes, |
72 | * but set it higher, just in case. */ | |
ee7118a8 DD |
73 | #define MAXCHILDPROCS 5 |
74 | ||
75 | struct pid_status { | |
76 | pid_t pid; | |
77 | int status; | |
78 | } pid_stat_table[MAXCHILDPROCS]; | |
79 | ||
e5a2b854 | 80 | static void show_malloc_stats(void); |
82980a23 AT |
81 | |
82 | /**************************************************************************** | |
83 | wait for a process to exit, calling io_flush while waiting | |
84 | ****************************************************************************/ | |
85 | void wait_process(pid_t pid, int *status) | |
86 | { | |
ee7118a8 DD |
87 | pid_t waited_pid; |
88 | int cnt; | |
89 | ||
90 | while ((waited_pid = waitpid(pid, status, WNOHANG)) == 0) { | |
a24c6870 | 91 | msleep(20); |
f1e3656e | 92 | io_flush(FULL_FLUSH); |
82980a23 | 93 | } |
d9c7edf6 | 94 | |
6fb812f7 | 95 | if (waited_pid == -1 && errno == ECHILD) { |
ee7118a8 DD |
96 | /* status of requested child no longer available. |
97 | * check to see if it was processed by the sigchld_handler. | |
98 | */ | |
99 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { | |
100 | if (pid == pid_stat_table[cnt].pid) { | |
101 | *status = pid_stat_table[cnt].status; | |
102 | pid_stat_table[cnt].pid = 0; | |
103 | break; | |
104 | } | |
105 | } | |
106 | } | |
107 | ||
d9c7edf6 WD |
108 | /* TODO: If the child exited on a signal, then log an |
109 | * appropriate error message. Perhaps we should also accept a | |
110 | * message describing the purpose of the child. Also indicate | |
111 | * this to the caller so that thhey know something went | |
112 | * wrong. */ | |
82980a23 AT |
113 | *status = WEXITSTATUS(*status); |
114 | } | |
115 | ||
b9f592fb WD |
116 | /* This function gets called from all 3 processes. We want the client side |
117 | * to actually output the text, but the sender is the only process that has | |
118 | * all the stats we need. So, if we're a client sender, we do the report. | |
119 | * If we're a server sender, we write the stats on the supplied fd. If | |
120 | * we're the client receiver we read the stats from the supplied fd and do | |
121 | * the report. All processes might also generate a set of debug stats, if | |
122 | * the verbose level is high enough (this is the only thing that the | |
123 | * generator process and the server receiver ever do here). */ | |
c627d613 AT |
124 | static void report(int f) |
125 | { | |
b9f592fb WD |
126 | /* Cache two stats because the read/write code can change it. */ |
127 | int64 total_read = stats.total_read; | |
128 | int64 total_written = stats.total_written; | |
7a6421fa | 129 | time_t t = time(NULL); |
7a6421fa | 130 | |
7bb7058e | 131 | if (do_stats && verbose > 1) { |
5c15e29f | 132 | /* These come out from every process */ |
7bb7058e | 133 | show_malloc_stats(); |
86943126 | 134 | show_flist_stats(); |
5c15e29f MP |
135 | } |
136 | ||
e5fbaa71 S |
137 | if (am_generator) |
138 | return; | |
139 | ||
248fbb8c | 140 | if (am_daemon) { |
a9766ef1 | 141 | log_exit(0, __FILE__, __LINE__); |
83926d3c WD |
142 | if (f == -1 || !am_sender) |
143 | return; | |
248fbb8c AT |
144 | } |
145 | ||
e19452a9 | 146 | if (am_server) { |
3e491682 | 147 | if (am_sender) { |
b9f592fb WD |
148 | write_longint(f, total_read); |
149 | write_longint(f, total_written); | |
150 | write_longint(f, stats.total_size); | |
f0f7e760 WD |
151 | if (protocol_version >= 29) { |
152 | write_longint(f, stats.flist_buildtime); | |
153 | write_longint(f, stats.flist_xfertime); | |
154 | } | |
e19452a9 | 155 | } |
7a6421fa AT |
156 | return; |
157 | } | |
e19452a9 DD |
158 | |
159 | /* this is the client */ | |
d9c7edf6 | 160 | |
3e491682 | 161 | if (!am_sender) { |
58c5c245 WD |
162 | /* Read the first two in opposite order because the meaning of |
163 | * read/write swaps when switching from sender to receiver. */ | |
b9f592fb WD |
164 | total_written = read_longint(f); |
165 | total_read = read_longint(f); | |
a800434a | 166 | stats.total_size = read_longint(f); |
f0f7e760 WD |
167 | if (protocol_version >= 29) { |
168 | stats.flist_buildtime = read_longint(f); | |
169 | stats.flist_xfertime = read_longint(f); | |
170 | } | |
b9f592fb WD |
171 | } else if (write_batch) { |
172 | /* The --read-batch process is going to be a client | |
173 | * receiver, so we need to give it the stats. */ | |
174 | write_longint(batch_fd, total_read); | |
175 | write_longint(batch_fd, total_written); | |
176 | write_longint(batch_fd, stats.total_size); | |
f0f7e760 WD |
177 | if (protocol_version >= 29) { |
178 | write_longint(batch_fd, stats.flist_buildtime); | |
179 | write_longint(batch_fd, stats.flist_xfertime); | |
180 | } | |
a800434a AT |
181 | } |
182 | ||
183 | if (do_stats) { | |
1f658d42 | 184 | rprintf(FINFO,"\nNumber of files: %d\n", stats.num_files); |
d9c7edf6 WD |
185 | rprintf(FINFO,"Number of files transferred: %d\n", |
186 | stats.num_transferred_files); | |
187 | rprintf(FINFO,"Total file size: %.0f bytes\n", | |
188 | (double)stats.total_size); | |
189 | rprintf(FINFO,"Total transferred file size: %.0f bytes\n", | |
190 | (double)stats.total_transferred_size); | |
191 | rprintf(FINFO,"Literal data: %.0f bytes\n", | |
192 | (double)stats.literal_data); | |
193 | rprintf(FINFO,"Matched data: %.0f bytes\n", | |
194 | (double)stats.matched_data); | |
1f658d42 | 195 | rprintf(FINFO,"File list size: %d\n", stats.flist_size); |
f0f7e760 WD |
196 | if (stats.flist_buildtime) { |
197 | rprintf(FINFO, | |
198 | "File list generation time: %.3f seconds\n", | |
199 | (double)stats.flist_buildtime / 1000); | |
200 | rprintf(FINFO, | |
201 | "File list transfer time: %.3f seconds\n", | |
202 | (double)stats.flist_xfertime / 1000); | |
203 | } | |
4de2a174 | 204 | rprintf(FINFO,"Total bytes sent: %.0f\n", |
b9f592fb | 205 | (double)total_written); |
4de2a174 | 206 | rprintf(FINFO,"Total bytes received: %.0f\n", |
b9f592fb | 207 | (double)total_read); |
7a6421fa | 208 | } |
d9c7edf6 | 209 | |
e19452a9 | 210 | if (verbose || do_stats) { |
b9f592fb | 211 | rprintf(FINFO, |
4de2a174 | 212 | "\nsent %.0f bytes received %.0f bytes %.2f bytes/sec\n", |
b9f592fb WD |
213 | (double)total_written, (double)total_read, |
214 | (total_written + total_read)/(0.5 + (t - starttime))); | |
215 | rprintf(FINFO, "total size is %.0f speedup is %.2f\n", | |
d9c7edf6 | 216 | (double)stats.total_size, |
b9f592fb | 217 | (double)stats.total_size / (total_written+total_read)); |
e19452a9 | 218 | } |
fc8a6b97 AT |
219 | |
220 | fflush(stdout); | |
221 | fflush(stderr); | |
c627d613 AT |
222 | } |
223 | ||
224 | ||
e5a2b854 MP |
225 | /** |
226 | * If our C library can get malloc statistics, then show them to FINFO | |
227 | **/ | |
228 | static void show_malloc_stats(void) | |
229 | { | |
4f5b0756 | 230 | #ifdef HAVE_MALLINFO |
e5a2b854 MP |
231 | struct mallinfo mi; |
232 | ||
233 | mi = mallinfo(); | |
234 | ||
ce672562 | 235 | rprintf(FINFO, "\n" RSYNC_NAME "[%d] (%s%s%s) heap statistics:\n", |
f846a9bf WD |
236 | getpid(), am_server ? "server " : "", |
237 | am_daemon ? "daemon " : "", who_am_i()); | |
238 | rprintf(FINFO, " arena: %10ld (bytes from sbrk)\n", | |
239 | (long)mi.arena); | |
240 | rprintf(FINFO, " ordblks: %10ld (chunks not in use)\n", | |
241 | (long)mi.ordblks); | |
242 | rprintf(FINFO, " smblks: %10ld\n", | |
243 | (long)mi.smblks); | |
244 | rprintf(FINFO, " hblks: %10ld (chunks from mmap)\n", | |
245 | (long)mi.hblks); | |
246 | rprintf(FINFO, " hblkhd: %10ld (bytes from mmap)\n", | |
247 | (long)mi.hblkhd); | |
248 | rprintf(FINFO, " allmem: %10ld (bytes from sbrk + mmap)\n", | |
249 | (long)mi.arena + mi.hblkhd); | |
250 | rprintf(FINFO, " usmblks: %10ld\n", | |
251 | (long)mi.usmblks); | |
252 | rprintf(FINFO, " fsmblks: %10ld\n", | |
253 | (long)mi.fsmblks); | |
254 | rprintf(FINFO, " uordblks: %10ld (bytes used)\n", | |
255 | (long)mi.uordblks); | |
256 | rprintf(FINFO, " fordblks: %10ld (bytes free)\n", | |
257 | (long)mi.fordblks); | |
258 | rprintf(FINFO, " keepcost: %10ld (bytes in releasable chunk)\n", | |
259 | (long)mi.keepcost); | |
e5a2b854 MP |
260 | #endif /* HAVE_MALLINFO */ |
261 | } | |
262 | ||
263 | ||
0882faa2 | 264 | /* Start the remote shell. cmd may be NULL to use the default. */ |
6c2e5b56 WD |
265 | static pid_t do_cmd(char *cmd, char *machine, char *user, char *path, |
266 | int *f_in, int *f_out) | |
c627d613 | 267 | { |
6c2e5b56 | 268 | int i, argc = 0; |
887e553f | 269 | char *args[MAX_ARGS]; |
19b27a48 | 270 | pid_t ret; |
6c2e5b56 | 271 | char *tok, *dir = NULL; |
bb4aa89c | 272 | int dash_l_set = 0; |
366345fe | 273 | |
088aac85 | 274 | if (!read_batch && !local_server) { |
9af87151 | 275 | char *rsh_env = getenv(RSYNC_RSH_ENV); |
366345fe | 276 | if (!cmd) |
9af87151 | 277 | cmd = rsh_env; |
366345fe AT |
278 | if (!cmd) |
279 | cmd = RSYNC_RSH; | |
280 | cmd = strdup(cmd); | |
d9c7edf6 | 281 | if (!cmd) |
366345fe AT |
282 | goto oom; |
283 | ||
887e553f | 284 | for (tok = strtok(cmd, " "); tok; tok = strtok(NULL, " ")) { |
e7a392c7 WD |
285 | /* Comparison leaves rooms for server_options(). */ |
286 | if (argc >= MAX_ARGS - 100) { | |
287 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
887e553f WD |
288 | exit_cleanup(RERR_SYNTAX); |
289 | } | |
366345fe | 290 | args[argc++] = tok; |
887e553f | 291 | } |
c627d613 | 292 | |
d9c7edf6 | 293 | /* check to see if we've already been given '-l user' in |
9af87151 | 294 | * the remote-shell command */ |
bb4aa89c WD |
295 | for (i = 0; i < argc-1; i++) { |
296 | if (!strcmp(args[i], "-l") && args[i+1][0] != '-') | |
297 | dash_l_set = 1; | |
298 | } | |
299 | ||
4f5b0756 | 300 | #ifdef HAVE_REMSH |
366345fe AT |
301 | /* remsh (on HPUX) takes the arguments the other way around */ |
302 | args[argc++] = machine; | |
bb4aa89c | 303 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
304 | args[argc++] = "-l"; |
305 | args[argc++] = user; | |
306 | } | |
7b8356d0 | 307 | #else |
bb4aa89c | 308 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
309 | args[argc++] = "-l"; |
310 | args[argc++] = user; | |
311 | } | |
312 | args[argc++] = machine; | |
7b8356d0 | 313 | #endif |
c627d613 | 314 | |
366345fe | 315 | args[argc++] = rsync_path; |
c627d613 | 316 | |
9af87151 | 317 | if (blocking_io < 0) { |
90e22f4b WD |
318 | char *cp; |
319 | if ((cp = strrchr(cmd, '/')) != NULL) | |
320 | cp++; | |
321 | else | |
322 | cp = cmd; | |
323 | if (strcmp(cp, "rsh") == 0 || strcmp(cp, "remsh") == 0) | |
324 | blocking_io = 1; | |
66b71163 | 325 | } |
e384bfbd | 326 | |
93689aa5 | 327 | server_options(args,&argc); |
e7a392c7 WD |
328 | |
329 | if (argc >= MAX_ARGS - 2) { | |
330 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
331 | exit_cleanup(RERR_SYNTAX); | |
332 | } | |
366345fe | 333 | } |
c627d613 | 334 | |
366345fe | 335 | args[argc++] = "."; |
76076c4b | 336 | |
d9c7edf6 | 337 | if (!daemon_over_rsh && path && *path) |
366345fe | 338 | args[argc++] = path; |
c627d613 | 339 | |
366345fe | 340 | args[argc] = NULL; |
c627d613 | 341 | |
366345fe | 342 | if (verbose > 3) { |
9486289c | 343 | rprintf(FINFO,"cmd="); |
e7a392c7 | 344 | for (i = 0; i < argc; i++) |
71903f60 | 345 | rprintf(FINFO, "%s ", safe_fname(args[i])); |
9486289c | 346 | rprintf(FINFO,"\n"); |
366345fe AT |
347 | } |
348 | ||
c0d8e84c WD |
349 | if (read_batch) { |
350 | int from_gen_pipe[2]; | |
351 | if (fd_pair(from_gen_pipe) < 0) { | |
352 | rsyserr(FERROR, errno, "pipe"); | |
353 | exit_cleanup(RERR_IPC); | |
354 | } | |
355 | batch_gen_fd = from_gen_pipe[0]; | |
356 | *f_out = from_gen_pipe[1]; | |
357 | *f_in = batch_fd; | |
358 | ret = -1; /* no child pid */ | |
359 | } else if (local_server) { | |
b1df18d7 WD |
360 | /* If the user didn't request --[no-]whole-file, force |
361 | * it on, but only if we're not batch processing. */ | |
c0d8e84c | 362 | if (whole_file < 0 && !write_batch) |
b1df18d7 | 363 | whole_file = 1; |
25d34a5c | 364 | ret = local_child(argc, args, f_in, f_out, child_main); |
c0d8e84c | 365 | } else |
366345fe | 366 | ret = piped_child(args,f_in,f_out); |
c627d613 | 367 | |
3a69fad0 WD |
368 | if (dir) |
369 | free(dir); | |
82306bf6 | 370 | |
366345fe | 371 | return ret; |
c627d613 AT |
372 | |
373 | oom: | |
366345fe AT |
374 | out_of_memory("do_cmd"); |
375 | return 0; /* not reached */ | |
c627d613 AT |
376 | } |
377 | ||
378 | ||
c627d613 AT |
379 | static char *get_local_name(struct file_list *flist,char *name) |
380 | { | |
7a6421fa | 381 | STRUCT_STAT st; |
87cc45e1 | 382 | int e; |
c627d613 | 383 | |
c95da96a | 384 | if (verbose > 2) |
d9c7edf6 | 385 | rprintf(FINFO,"get_local_name count=%d %s\n", |
1f0610ef DD |
386 | flist->count, NS(name)); |
387 | ||
d9c7edf6 | 388 | if (!name) |
1f0610ef | 389 | return NULL; |
c95da96a | 390 | |
1ff5450d AT |
391 | if (do_stat(name,&st) == 0) { |
392 | if (S_ISDIR(st.st_mode)) { | |
59187666 | 393 | if (!push_dir(name)) { |
982e05bb WD |
394 | rsyserr(FERROR, errno, "push_dir#1 %s failed", |
395 | full_fname(name)); | |
65417579 | 396 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
397 | } |
398 | return NULL; | |
399 | } | |
400 | if (flist->count > 1) { | |
401 | rprintf(FERROR,"ERROR: destination must be a directory when copying more than 1 file\n"); | |
65417579 | 402 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
403 | } |
404 | return name; | |
405 | } | |
406 | ||
87cc45e1 | 407 | if (flist->count <= 1 && ((e = strlen(name)) <= 1 || name[e-1] != '/')) |
1ff5450d AT |
408 | return name; |
409 | ||
1ff5450d | 410 | if (do_mkdir(name,0777 & ~orig_umask) != 0) { |
982e05bb | 411 | rsyserr(FERROR, errno, "mkdir %s failed", full_fname(name)); |
65417579 | 412 | exit_cleanup(RERR_FILEIO); |
e5a96f0f WD |
413 | } |
414 | if (verbose > 0) | |
71903f60 | 415 | rprintf(FINFO, "created directory %s\n", safe_fname(name)); |
e5a96f0f WD |
416 | |
417 | if (dry_run) { | |
418 | dry_run++; | |
419 | return NULL; | |
1ff5450d AT |
420 | } |
421 | ||
59187666 | 422 | if (!push_dir(name)) { |
982e05bb WD |
423 | rsyserr(FERROR, errno, "push_dir#2 %s failed", |
424 | full_fname(name)); | |
65417579 | 425 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
426 | } |
427 | ||
428 | return NULL; | |
c627d613 AT |
429 | } |
430 | ||
431 | ||
1a8e5c97 | 432 | /* This is only called by the sender. */ |
3485ae83 | 433 | static void read_final_goodbye(int f_in, int f_out) |
4e0fcd85 | 434 | { |
1a8e5c97 WD |
435 | int i; |
436 | ||
437 | if (protocol_version < 29) | |
438 | i = read_int(f_in); | |
439 | else { | |
3485ae83 | 440 | while ((i = read_int(f_in)) == the_file_list->count |
1a8e5c97 WD |
441 | && read_shortint(f_in) == ITEM_IS_NEW) { |
442 | /* Forward the keep-alive (no-op) to the receiver. */ | |
3485ae83 | 443 | write_int(f_out, the_file_list->count); |
1a8e5c97 WD |
444 | write_shortint(f_out, ITEM_IS_NEW); |
445 | } | |
4e0fcd85 WD |
446 | } |
447 | ||
1a8e5c97 | 448 | if (i != -1) { |
3485ae83 WD |
449 | rprintf(FERROR, "Invalid packet at end of run [%s]\n", |
450 | who_am_i()); | |
1a8e5c97 | 451 | exit_cleanup(RERR_PROTOCOL); |
4e0fcd85 WD |
452 | } |
453 | } | |
454 | ||
455 | ||
9486289c | 456 | static void do_server_sender(int f_in, int f_out, int argc,char *argv[]) |
c627d613 | 457 | { |
7a6421fa AT |
458 | int i; |
459 | struct file_list *flist; | |
460 | char *dir = argv[0]; | |
c627d613 | 461 | |
45e08edb WD |
462 | if (verbose > 2) { |
463 | rprintf(FINFO, "server_sender starting pid=%ld\n", | |
464 | (long)getpid()); | |
465 | } | |
d9c7edf6 | 466 | |
2adbcdc7 | 467 | if (am_daemon && lp_write_only(module_id)) { |
7a92ded3 WD |
468 | rprintf(FERROR, "ERROR: module is write only\n"); |
469 | exit_cleanup(RERR_SYNTAX); | |
470 | return; | |
471 | } | |
bf26aa22 WD |
472 | if (am_daemon && lp_read_only(module_id) && remove_sent_files) { |
473 | rprintf(FERROR, | |
474 | "ERROR: --remove-sent-files cannot be used with a read-only module\n"); | |
475 | exit_cleanup(RERR_SYNTAX); | |
476 | return; | |
477 | } | |
7a92ded3 | 478 | |
59187666 | 479 | if (!relative_paths && !push_dir(dir)) { |
982e05bb WD |
480 | rsyserr(FERROR, errno, "push_dir#3 %s failed", |
481 | full_fname(dir)); | |
65417579 | 482 | exit_cleanup(RERR_FILESELECT); |
7a6421fa AT |
483 | } |
484 | argc--; | |
485 | argv++; | |
d9c7edf6 | 486 | |
7a6421fa AT |
487 | if (strcmp(dir,".")) { |
488 | int l = strlen(dir); | |
d9c7edf6 | 489 | if (strcmp(dir,"/") == 0) |
7a6421fa | 490 | l = 0; |
e7a392c7 | 491 | for (i = 0; i < argc; i++) |
7a6421fa AT |
492 | argv[i] += l+1; |
493 | } | |
c627d613 | 494 | |
48a1ff0d | 495 | if (argc == 0 && (recurse || list_only)) { |
e1f67417 | 496 | argc = 1; |
7a6421fa AT |
497 | argv--; |
498 | argv[0] = "."; | |
499 | } | |
d9c7edf6 | 500 | |
7a6421fa | 501 | flist = send_file_list(f_out,argc,argv); |
8d9dc9f9 AT |
502 | if (!flist || flist->count == 0) { |
503 | exit_cleanup(0); | |
504 | } | |
a00628b3 | 505 | the_file_list = flist; |
8d9dc9f9 | 506 | |
da3478b2 WD |
507 | io_start_buffering_in(); |
508 | io_start_buffering_out(); | |
509 | ||
7a6421fa | 510 | send_files(flist,f_out,f_in); |
f1e3656e | 511 | io_flush(FULL_FLUSH); |
7a6421fa | 512 | report(f_out); |
4e0fcd85 | 513 | if (protocol_version >= 24) |
3485ae83 | 514 | read_final_goodbye(f_in, f_out); |
f1e3656e | 515 | io_flush(FULL_FLUSH); |
7a6421fa | 516 | exit_cleanup(0); |
c627d613 AT |
517 | } |
518 | ||
519 | ||
dc5ddbcc AT |
520 | static int do_recv(int f_in,int f_out,struct file_list *flist,char *local_name) |
521 | { | |
d186eb1a | 522 | int pid; |
e1f67417 | 523 | int status = 0; |
41cfde6b | 524 | int error_pipe[2], name_pipe[2]; |
cb8240a2 | 525 | BOOL need_name_pipe = (basis_dir[0] || partial_dir || fuzzy_basis |
38e3910b | 526 | || (inplace && make_backups)) && !dry_run; |
dc5ddbcc | 527 | |
bb6721dc WD |
528 | /* The receiving side mustn't obey this, or an existing symlink that |
529 | * points to an identical file won't be replaced by the referent. */ | |
530 | copy_links = 0; | |
531 | ||
d186eb1a | 532 | if (preserve_hard_links) |
3485ae83 | 533 | init_hard_links(); |
dc5ddbcc | 534 | |
41cfde6b WD |
535 | if (fd_pair(error_pipe) < 0 |
536 | || (need_name_pipe && fd_pair(name_pipe) < 0)) { | |
ab759cd2 | 537 | rsyserr(FERROR, errno, "pipe failed in do_recv"); |
c8f2f857 | 538 | exit_cleanup(RERR_IPC); |
554e0a8d | 539 | } |
d9c7edf6 | 540 | |
f1e3656e | 541 | io_flush(NORMAL_FLUSH); |
c6e7fcb4 | 542 | |
ba449e44 | 543 | if ((pid = do_fork()) == -1) { |
c8f2f857 | 544 | rsyserr(FERROR, errno, "fork failed in do_recv"); |
ba449e44 WD |
545 | exit_cleanup(RERR_IPC); |
546 | } | |
547 | ||
548 | if (pid == 0) { | |
554e0a8d | 549 | close(error_pipe[0]); |
41cfde6b WD |
550 | if (need_name_pipe) { |
551 | close(name_pipe[1]); | |
552 | set_blocking(name_pipe[0]); | |
553 | } else | |
554 | name_pipe[0] = -1; | |
3a69fad0 WD |
555 | if (f_in != f_out) |
556 | close(f_out); | |
e08c9610 | 557 | |
554e0a8d | 558 | /* we can't let two processes write to the socket at one time */ |
9eeb3b9c | 559 | close_multiplexing_out(); |
554e0a8d AT |
560 | |
561 | /* set place to send errors */ | |
f1e3656e | 562 | set_msg_fd_out(error_pipe[1]); |
554e0a8d | 563 | |
41cfde6b | 564 | recv_files(f_in, flist, local_name, name_pipe[0]); |
f1e3656e | 565 | io_flush(FULL_FLUSH); |
ba5e128d | 566 | report(f_in); |
e08c9610 | 567 | |
f1e3656e WD |
568 | send_msg(MSG_DONE, "", 0); |
569 | io_flush(FULL_FLUSH); | |
4e0fcd85 | 570 | |
40df65fd WD |
571 | /* Handle any keep-alive packets from the post-processing work |
572 | * that the generator does. */ | |
4e0fcd85 | 573 | if (protocol_version >= 29) { |
051182cb | 574 | kluge_around_eof = -1; |
1a8e5c97 WD |
575 | |
576 | /* This should only get stopped via a USR2 signal. */ | |
577 | while (read_int(f_in) == flist->count | |
578 | && read_shortint(f_in) == ITEM_IS_NEW) {} | |
579 | ||
3485ae83 WD |
580 | rprintf(FERROR, "Invalid packet at end of run [%s]\n", |
581 | who_am_i()); | |
1a8e5c97 | 582 | exit_cleanup(RERR_PROTOCOL); |
4e0fcd85 WD |
583 | } |
584 | ||
9e0582f9 WD |
585 | /* Finally, we go to sleep until our parent kills us with a |
586 | * USR2 signal. We sleep for a short time, as on some OSes | |
587 | * a signal won't interrupt a sleep! */ | |
f1e3656e WD |
588 | while (1) |
589 | msleep(20); | |
d186eb1a | 590 | } |
dc5ddbcc | 591 | |
b695f242 | 592 | am_generator = 1; |
9eeb3b9c | 593 | close_multiplexing_in(); |
b9f592fb WD |
594 | if (write_batch) |
595 | stop_write_batch(); | |
b695f242 | 596 | |
554e0a8d | 597 | close(error_pipe[1]); |
41cfde6b WD |
598 | if (need_name_pipe) { |
599 | close(name_pipe[0]); | |
600 | set_nonblocking(name_pipe[1]); | |
601 | } else | |
602 | name_pipe[1] = -1; | |
3a69fad0 WD |
603 | if (f_in != f_out) |
604 | close(f_in); | |
e1b3d5c4 | 605 | |
da3478b2 | 606 | io_start_buffering_out(); |
b3e10ed7 | 607 | |
f1e3656e | 608 | set_msg_fd_in(error_pipe[0]); |
554e0a8d | 609 | |
41cfde6b | 610 | generate_files(f_out, flist, local_name, name_pipe[1]); |
8d9dc9f9 | 611 | |
e5fbaa71 | 612 | report(-1); |
f1e3656e | 613 | io_flush(FULL_FLUSH); |
d04e9c51 | 614 | if (protocol_version >= 24) { |
8ada7518 AT |
615 | /* send a final goodbye message */ |
616 | write_int(f_out, -1); | |
617 | } | |
f1e3656e | 618 | io_flush(FULL_FLUSH); |
8ada7518 | 619 | |
f1e3656e | 620 | set_msg_fd_in(-1); |
089a2435 | 621 | kill(pid, SIGUSR2); |
d79d1c69 | 622 | wait_process(pid, &status); |
d186eb1a | 623 | return status; |
dc5ddbcc AT |
624 | } |
625 | ||
c627d613 | 626 | |
9486289c | 627 | static void do_server_recv(int f_in, int f_out, int argc,char *argv[]) |
c627d613 | 628 | { |
7a6421fa AT |
629 | int status; |
630 | struct file_list *flist; | |
6c2e5b56 | 631 | char *local_name = NULL; |
7a6421fa | 632 | char *dir = NULL; |
07bff66f WD |
633 | int save_verbose = verbose; |
634 | ||
635 | if (filesfrom_fd >= 0) { | |
636 | /* We can't mix messages with files-from data on the socket, | |
637 | * so temporarily turn off verbose messages. */ | |
638 | verbose = 0; | |
639 | } | |
f0fca04e | 640 | |
45e08edb WD |
641 | if (verbose > 2) { |
642 | rprintf(FINFO, "server_recv(%d) starting pid=%ld\n", | |
643 | argc, (long)getpid()); | |
644 | } | |
09b7f5db | 645 | |
2adbcdc7 | 646 | if (am_daemon && lp_read_only(module_id)) { |
09b7f5db AT |
647 | rprintf(FERROR,"ERROR: module is read only\n"); |
648 | exit_cleanup(RERR_SYNTAX); | |
649 | return; | |
650 | } | |
651 | ||
d9c7edf6 | 652 | |
7a6421fa AT |
653 | if (argc > 0) { |
654 | dir = argv[0]; | |
655 | argc--; | |
656 | argv++; | |
59187666 | 657 | if (!am_daemon && !push_dir(dir)) { |
982e05bb WD |
658 | rsyserr(FERROR, errno, "push_dir#4 %s failed", |
659 | full_fname(dir)); | |
65417579 | 660 | exit_cleanup(RERR_FILESELECT); |
d9c7edf6 | 661 | } |
7a6421fa | 662 | } |
c627d613 | 663 | |
da3478b2 | 664 | io_start_buffering_in(); |
57dee64e | 665 | recv_filter_list(f_in); |
c627d613 | 666 | |
7c2a9e76 | 667 | if (filesfrom_fd >= 0) { |
07bff66f WD |
668 | /* We need to send the files-from names to the sender at the |
669 | * same time that we receive the file-list from them, so we | |
670 | * need the IO routines to automatically write out the names | |
671 | * onto our f_out socket as we read the file-list. This | |
672 | * avoids both deadlock and extra delays/buffers. */ | |
7c2a9e76 WD |
673 | io_set_filesfrom_fds(filesfrom_fd, f_out); |
674 | filesfrom_fd = -1; | |
675 | } | |
676 | ||
b9f592fb | 677 | flist = recv_file_list(f_in); |
07bff66f | 678 | verbose = save_verbose; |
4c36a13e AT |
679 | if (!flist) { |
680 | rprintf(FERROR,"server_recv: recv_file_list error\n"); | |
65417579 | 681 | exit_cleanup(RERR_FILESELECT); |
7a6421fa | 682 | } |
a00628b3 | 683 | the_file_list = flist; |
d9c7edf6 WD |
684 | |
685 | if (argc > 0) { | |
7a6421fa AT |
686 | if (strcmp(dir,".")) { |
687 | argv[0] += strlen(dir); | |
3a69fad0 WD |
688 | if (argv[0][0] == '/') |
689 | argv[0]++; | |
7a6421fa AT |
690 | } |
691 | local_name = get_local_name(flist,argv[0]); | |
692 | } | |
c627d613 | 693 | |
7a6421fa AT |
694 | status = do_recv(f_in,f_out,flist,local_name); |
695 | exit_cleanup(status); | |
c627d613 AT |
696 | } |
697 | ||
698 | ||
734a94a2 | 699 | int child_main(int argc, char *argv[]) |
25d34a5c MP |
700 | { |
701 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); | |
734a94a2 | 702 | return 0; |
25d34a5c MP |
703 | } |
704 | ||
705 | ||
9486289c | 706 | void start_server(int f_in, int f_out, int argc, char *argv[]) |
366345fe | 707 | { |
f0359dd0 AT |
708 | set_nonblocking(f_in); |
709 | set_nonblocking(f_out); | |
710 | ||
da3478b2 WD |
711 | io_set_sock_fds(f_in, f_out); |
712 | setup_protocol(f_out, f_in); | |
713 | ||
d04e9c51 | 714 | if (protocol_version >= 23) |
da3478b2 | 715 | io_start_multiplex_out(); |
7a6421fa | 716 | |
7a6421fa | 717 | if (am_sender) { |
83926d3c | 718 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
bf26aa22 WD |
719 | if (need_messages_from_generator) |
720 | io_start_multiplex_in(); | |
9b3318b0 | 721 | |
7842418b | 722 | recv_filter_list(f_in); |
7a6421fa AT |
723 | do_server_sender(f_in, f_out, argc, argv); |
724 | } else { | |
725 | do_server_recv(f_in, f_out, argc, argv); | |
726 | } | |
727 | exit_cleanup(0); | |
366345fe AT |
728 | } |
729 | ||
0ba48136 MP |
730 | |
731 | /* | |
732 | * This is called once the connection has been negotiated. It is used | |
733 | * for rsyncd, remote-shell, and local connections. | |
734 | */ | |
19b27a48 | 735 | int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[]) |
9486289c | 736 | { |
088aac85 | 737 | struct file_list *flist = NULL; |
9486289c AT |
738 | int status = 0, status2 = 0; |
739 | char *local_name = NULL; | |
19b27a48 AT |
740 | |
741 | cleanup_child_pid = pid; | |
67a28eb2 | 742 | if (!read_batch) { |
b9f592fb WD |
743 | set_nonblocking(f_in); |
744 | set_nonblocking(f_out); | |
745 | } | |
f0359dd0 | 746 | |
da3478b2 | 747 | io_set_sock_fds(f_in, f_out); |
6d7b6081 AT |
748 | setup_protocol(f_out,f_in); |
749 | ||
b9f592fb | 750 | if (protocol_version >= 23 && !read_batch) |
da3478b2 | 751 | io_start_multiplex_in(); |
d9c7edf6 | 752 | |
18882701 WD |
753 | /* We set our stderr file handle to blocking because ssh might have |
754 | * set it to non-blocking. This can be particularly troublesome if | |
755 | * stderr is a clone of stdout, because ssh would have set our stdout | |
756 | * to non-blocking at the same time (which can easily cause us to lose | |
757 | * output from our print statements). This kluge shouldn't cause ssh | |
758 | * any problems for how we use it. Note also that we delayed setting | |
759 | * this until after the above protocol setup so that we know for sure | |
760 | * that ssh is done twiddling its file descriptors. */ | |
761 | set_blocking(STDERR_FILENO); | |
762 | ||
9486289c | 763 | if (am_sender) { |
83926d3c | 764 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
da3478b2 | 765 | io_start_buffering_out(); |
860236bf | 766 | if (!filesfrom_host) |
a0a33ee5 | 767 | set_msg_fd_in(f_in); |
57dee64e | 768 | send_filter_list(f_out); |
860236bf | 769 | if (filesfrom_host) |
7c2a9e76 | 770 | filesfrom_fd = f_in; |
b9f592fb WD |
771 | |
772 | if (write_batch) | |
773 | start_write_batch(f_out); | |
a00628b3 | 774 | flist = send_file_list(f_out, argc, argv); |
a0a33ee5 | 775 | set_msg_fd_in(-1); |
d9c7edf6 | 776 | if (verbose > 3) |
9486289c | 777 | rprintf(FINFO,"file list sent\n"); |
a00628b3 | 778 | the_file_list = flist; |
e1b3d5c4 | 779 | |
f1e3656e | 780 | io_flush(NORMAL_FLUSH); |
9486289c | 781 | send_files(flist,f_out,f_in); |
f1e3656e | 782 | io_flush(FULL_FLUSH); |
4e0fcd85 | 783 | if (protocol_version >= 24) |
3485ae83 | 784 | read_final_goodbye(f_in, f_out); |
9486289c AT |
785 | if (pid != -1) { |
786 | if (verbose > 3) | |
08a740ff | 787 | rprintf(FINFO,"client_run waiting on %d\n", (int) pid); |
f1e3656e | 788 | io_flush(FULL_FLUSH); |
d79d1c69 | 789 | wait_process(pid, &status); |
9486289c | 790 | } |
3d382777 | 791 | report(-1); |
f1e3656e | 792 | io_flush(FULL_FLUSH); |
9486289c AT |
793 | exit_cleanup(status); |
794 | } | |
f7632fc6 | 795 | |
bf26aa22 WD |
796 | if (need_messages_from_generator && !read_batch) |
797 | io_start_multiplex_out(); | |
798 | ||
48a1ff0d WD |
799 | if (argc == 0) |
800 | list_only |= 1; | |
d9c7edf6 | 801 | |
57dee64e | 802 | send_filter_list(read_batch ? -1 : f_out); |
d9c7edf6 | 803 | |
7c2a9e76 WD |
804 | if (filesfrom_fd >= 0) { |
805 | io_set_filesfrom_fds(filesfrom_fd, f_out); | |
806 | filesfrom_fd = -1; | |
807 | } | |
808 | ||
b9f592fb WD |
809 | if (write_batch) |
810 | start_write_batch(f_in); | |
9486289c AT |
811 | flist = recv_file_list(f_in); |
812 | if (!flist || flist->count == 0) { | |
796d484b | 813 | rprintf(FINFO, "client: nothing to do: " |
d9c7edf6 WD |
814 | "perhaps you need to specify some filenames or " |
815 | "the --recursive option?\n"); | |
9486289c AT |
816 | exit_cleanup(0); |
817 | } | |
a00628b3 | 818 | the_file_list = flist; |
d9c7edf6 | 819 | |
9486289c | 820 | local_name = get_local_name(flist,argv[0]); |
d9c7edf6 | 821 | |
9486289c | 822 | status2 = do_recv(f_in,f_out,flist,local_name); |
d9c7edf6 | 823 | |
9486289c | 824 | if (pid != -1) { |
8d9dc9f9 | 825 | if (verbose > 3) |
08a740ff | 826 | rprintf(FINFO,"client_run2 waiting on %d\n", (int) pid); |
f1e3656e | 827 | io_flush(FULL_FLUSH); |
d79d1c69 | 828 | wait_process(pid, &status); |
9486289c | 829 | } |
d9c7edf6 | 830 | |
ff81e809 | 831 | return MAX(status, status2); |
9486289c AT |
832 | } |
833 | ||
7169bb4a MP |
834 | static int copy_argv (char *argv[]) |
835 | { | |
836 | int i; | |
837 | ||
838 | for (i = 0; argv[i]; i++) { | |
839 | if (!(argv[i] = strdup(argv[i]))) { | |
840 | rprintf (FERROR, "out of memory at %s(%d)\n", | |
841 | __FILE__, __LINE__); | |
842 | return RERR_MALLOC; | |
843 | } | |
844 | } | |
845 | ||
846 | return 0; | |
847 | } | |
848 | ||
849 | ||
c1a04ecb | 850 | /** |
0ba48136 MP |
851 | * Start a client for either type of remote connection. Work out |
852 | * whether the arguments request a remote shell or rsyncd connection, | |
853 | * and call the appropriate connection function, then run_client. | |
0b4af330 MP |
854 | * |
855 | * Calls either start_socket_client (for sockets) or do_cmd and | |
856 | * client_run (for ssh). | |
c1a04ecb | 857 | **/ |
fc8a6b97 | 858 | static int start_client(int argc, char *argv[]) |
5d6bcd44 AT |
859 | { |
860 | char *p; | |
861 | char *shell_machine = NULL; | |
862 | char *shell_path = NULL; | |
863 | char *shell_user = NULL; | |
19b27a48 AT |
864 | int ret; |
865 | pid_t pid; | |
5d6bcd44 | 866 | int f_in,f_out; |
7169bb4a MP |
867 | int rc; |
868 | ||
869 | /* Don't clobber argv[] so that ps(1) can still show the right | |
d9c7edf6 | 870 | * command line. */ |
75aeac44 | 871 | if ((rc = copy_argv(argv))) |
7169bb4a | 872 | return rc; |
5d6bcd44 | 873 | |
d16c245f | 874 | if (!read_batch) { /* for read_batch, NO source is specified */ |
42ccb4c0 | 875 | argc--; |
860236bf WD |
876 | shell_path = check_for_hostspec(argv[0], &shell_machine, &rsync_port); |
877 | if (shell_path) { /* source is remote */ | |
42ccb4c0 | 878 | argv++; |
860236bf WD |
879 | if (filesfrom_host && *filesfrom_host |
880 | && strcmp(filesfrom_host, shell_machine) != 0) { | |
7c2a9e76 | 881 | rprintf(FERROR, |
50b31539 | 882 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
883 | exit_cleanup(RERR_SYNTAX); |
884 | } | |
860236bf | 885 | if (rsync_port) { |
d9c7edf6 | 886 | if (!shell_cmd) { |
860236bf WD |
887 | return start_socket_client(shell_machine, |
888 | shell_path, | |
42ccb4c0 | 889 | argc, argv); |
d9c7edf6 | 890 | } |
d9c7edf6 | 891 | daemon_over_rsh = 1; |
75aeac44 | 892 | } |
3591c066 | 893 | |
42ccb4c0 WD |
894 | am_sender = 0; |
895 | } else { /* source is local, check dest arg */ | |
896 | am_sender = 1; | |
897 | ||
d16c245f | 898 | if (argc < 1) { /* destination required */ |
d9c7edf6 WD |
899 | usage(FERROR); |
900 | exit_cleanup(RERR_SYNTAX); | |
901 | } | |
a125c82a | 902 | |
42ccb4c0 | 903 | shell_path = check_for_hostspec(argv[argc], &shell_machine, &rsync_port); |
860236bf WD |
904 | if (shell_path && filesfrom_host && *filesfrom_host |
905 | && strcmp(filesfrom_host, shell_machine) != 0) { | |
7c2a9e76 | 906 | rprintf(FERROR, |
50b31539 | 907 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
908 | exit_cleanup(RERR_SYNTAX); |
909 | } | |
860236bf | 910 | if (!shell_path) { /* no hostspec found, so src & dest are local */ |
d9c7edf6 | 911 | local_server = 1; |
860236bf | 912 | if (filesfrom_host) { |
7c2a9e76 | 913 | rprintf(FERROR, |
50b31539 | 914 | "--files-from cannot be remote when the transfer is local\n"); |
7c2a9e76 WD |
915 | exit_cleanup(RERR_SYNTAX); |
916 | } | |
860236bf | 917 | shell_machine = NULL; |
42ccb4c0 | 918 | shell_path = argv[argc]; |
860236bf | 919 | } else if (rsync_port) { |
d9c7edf6 | 920 | if (!shell_cmd) { |
860236bf WD |
921 | return start_socket_client(shell_machine, |
922 | shell_path, | |
42ccb4c0 | 923 | argc, argv); |
d9c7edf6 | 924 | } |
d9c7edf6 | 925 | daemon_over_rsh = 1; |
a125c82a | 926 | } |
5d6bcd44 | 927 | } |
d16c245f | 928 | } else { /* read_batch */ |
d9c7edf6 WD |
929 | local_server = 1; |
930 | shell_path = argv[argc-1]; | |
860236bf | 931 | if (check_for_hostspec(shell_path, &shell_machine, &rsync_port)) { |
b9f592fb WD |
932 | rprintf(FERROR, "remote destination is not allowed with --read-batch\n"); |
933 | exit_cleanup(RERR_SYNTAX); | |
934 | } | |
6902ed17 MP |
935 | } |
936 | ||
5d6bcd44 | 937 | if (shell_machine) { |
6fc048f4 | 938 | p = strrchr(shell_machine,'@'); |
5d6bcd44 AT |
939 | if (p) { |
940 | *p = 0; | |
941 | shell_user = shell_machine; | |
942 | shell_machine = p+1; | |
943 | } | |
944 | } | |
945 | ||
946 | if (verbose > 3) { | |
9486289c | 947 | rprintf(FINFO,"cmd=%s machine=%s user=%s path=%s\n", |
71903f60 WD |
948 | shell_cmd ? safe_fname(shell_cmd) : "", |
949 | shell_machine ? safe_fname(shell_machine) : "", | |
950 | shell_user ? safe_fname(shell_user) : "", | |
951 | shell_path ? safe_fname(shell_path) : ""); | |
5d6bcd44 | 952 | } |
d9c7edf6 | 953 | |
d16c245f | 954 | /* for remote source, only single dest arg can remain ... */ |
f7632fc6 | 955 | if (!am_sender && argc > 1) { |
5d6bcd44 | 956 | usage(FERROR); |
65417579 | 957 | exit_cleanup(RERR_SYNTAX); |
5d6bcd44 | 958 | } |
27e3e9c9 | 959 | |
d16c245f | 960 | /* ... or no dest at all */ |
48a1ff0d WD |
961 | if (!am_sender && argc == 0) |
962 | list_only |= 1; | |
d9c7edf6 | 963 | |
75aeac44 WD |
964 | pid = do_cmd(shell_cmd,shell_machine,shell_user,shell_path, |
965 | &f_in,&f_out); | |
966 | ||
967 | /* if we're running an rsync server on the remote host over a | |
9af87151 | 968 | * remote shell command, we need to do the RSYNCD protocol first */ |
75aeac44 WD |
969 | if (daemon_over_rsh) { |
970 | int tmpret; | |
971 | tmpret = start_inband_exchange(shell_user, shell_path, | |
972 | f_in, f_out, argc); | |
973 | if (tmpret < 0) | |
974 | return tmpret; | |
975 | } | |
976 | ||
fc8a6b97 AT |
977 | ret = client_run(f_in, f_out, pid, argc, argv); |
978 | ||
979 | fflush(stdout); | |
980 | fflush(stderr); | |
981 | ||
982 | return ret; | |
5d6bcd44 AT |
983 | } |
984 | ||
366345fe | 985 | |
067669da WD |
986 | static RETSIGTYPE sigusr1_handler(UNUSED(int val)) |
987 | { | |
65417579 | 988 | exit_cleanup(RERR_SIGNAL); |
82306bf6 AT |
989 | } |
990 | ||
067669da WD |
991 | static RETSIGTYPE sigusr2_handler(UNUSED(int val)) |
992 | { | |
40df65fd | 993 | close_all(); |
19b27a48 | 994 | if (log_got_error) _exit(RERR_PARTIAL); |
8b35435f AT |
995 | _exit(0); |
996 | } | |
997 | ||
067669da WD |
998 | static RETSIGTYPE sigchld_handler(UNUSED(int val)) |
999 | { | |
029c1713 | 1000 | #ifdef WNOHANG |
ee7118a8 DD |
1001 | int cnt, status; |
1002 | pid_t pid; | |
1003 | /* An empty waitpid() loop was put here by Tridge and we could never | |
d9c7edf6 | 1004 | * get him to explain why he put it in, so rather than taking it |
ee7118a8 DD |
1005 | * out we're instead saving the child exit statuses for later use. |
1006 | * The waitpid() loop presumably eliminates all possibility of leaving | |
1007 | * zombie children, maybe that's why he did it. | |
1008 | */ | |
1009 | while ((pid = waitpid(-1, &status, WNOHANG)) > 0) { | |
9af87151 WD |
1010 | /* save the child's exit status */ |
1011 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { | |
1012 | if (pid_stat_table[cnt].pid == 0) { | |
1013 | pid_stat_table[cnt].pid = pid; | |
1014 | pid_stat_table[cnt].status = status; | |
1015 | break; | |
1016 | } | |
1017 | } | |
ee7118a8 | 1018 | } |
029c1713 | 1019 | #endif |
19b27a48 AT |
1020 | } |
1021 | ||
c0531332 MP |
1022 | |
1023 | /** | |
1024 | * This routine catches signals and tries to send them to gdb. | |
1025 | * | |
1026 | * Because it's called from inside a signal handler it ought not to | |
1027 | * use too many library routines. | |
1028 | * | |
1029 | * @todo Perhaps use "screen -X" instead/as well, to help people | |
1030 | * debugging without easy access to X. Perhaps use an environment | |
1031 | * variable, or just call a script? | |
1032 | * | |
1033 | * @todo The /proc/ magic probably only works on Linux (and | |
1034 | * Solaris?) Can we be more portable? | |
1035 | **/ | |
1036 | #ifdef MAINTAINER_MODE | |
4fdc39dd MP |
1037 | const char *get_panic_action(void) |
1038 | { | |
1039 | const char *cmd_fmt = getenv("RSYNC_PANIC_ACTION"); | |
1040 | ||
1041 | if (cmd_fmt) | |
1042 | return cmd_fmt; | |
1043 | else | |
1044 | return "xterm -display :0 -T Panic -n Panic " | |
1045 | "-e gdb /proc/%d/exe %d"; | |
1046 | } | |
1047 | ||
1048 | ||
9fb3f7a9 MP |
1049 | /** |
1050 | * Handle a fatal signal by launching a debugger, controlled by $RSYNC_PANIC_ACTION. | |
1051 | * | |
1052 | * This signal handler is only installed if we were configured with | |
1053 | * --enable-maintainer-mode. Perhaps it should always be on and we | |
1054 | * should just look at the environment variable, but I'm a bit leery | |
1055 | * of a signal sending us into a busy loop. | |
1056 | **/ | |
067669da | 1057 | static RETSIGTYPE rsync_panic_handler(UNUSED(int whatsig)) |
c0531332 MP |
1058 | { |
1059 | char cmd_buf[300]; | |
1060 | int ret; | |
4fdc39dd MP |
1061 | |
1062 | sprintf(cmd_buf, get_panic_action(), | |
c0531332 MP |
1063 | getpid(), getpid()); |
1064 | ||
1065 | /* Unless we failed to execute gdb, we allow the process to | |
1066 | * continue. I'm not sure if that's right. */ | |
1067 | ret = system(cmd_buf); | |
1068 | if (ret) | |
1069 | _exit(ret); | |
1070 | } | |
1071 | #endif | |
1072 | ||
1073 | ||
5d6bcd44 | 1074 | int main(int argc,char *argv[]) |
d9c7edf6 | 1075 | { |
ff81e809 | 1076 | int ret; |
66a9dc96 WD |
1077 | int orig_argc = argc; |
1078 | char **orig_argv = argv; | |
5d6bcd44 | 1079 | |
7a6421fa | 1080 | signal(SIGUSR1, sigusr1_handler); |
8b35435f | 1081 | signal(SIGUSR2, sigusr2_handler); |
19b27a48 | 1082 | signal(SIGCHLD, sigchld_handler); |
c0531332 MP |
1083 | #ifdef MAINTAINER_MODE |
1084 | signal(SIGSEGV, rsync_panic_handler); | |
1085 | signal(SIGFPE, rsync_panic_handler); | |
1086 | signal(SIGABRT, rsync_panic_handler); | |
1087 | signal(SIGBUS, rsync_panic_handler); | |
1088 | #endif /* def MAINTAINER_MODE */ | |
5d6bcd44 | 1089 | |
7a6421fa | 1090 | starttime = time(NULL); |
6fe05820 | 1091 | am_root = (MY_UID() == 0); |
c627d613 | 1092 | |
a800434a AT |
1093 | memset(&stats, 0, sizeof(stats)); |
1094 | ||
df5e03da AT |
1095 | if (argc < 2) { |
1096 | usage(FERROR); | |
65417579 | 1097 | exit_cleanup(RERR_SYNTAX); |
df5e03da AT |
1098 | } |
1099 | ||
7a6421fa | 1100 | /* we set a 0 umask so that correct file permissions can be |
9af87151 | 1101 | * carried across */ |
7a6421fa | 1102 | orig_umask = (int)umask(0); |
5d6bcd44 | 1103 | |
50135767 | 1104 | if (!parse_arguments(&argc, (const char ***) &argv, 1)) { |
d9c7edf6 WD |
1105 | /* FIXME: We ought to call the same error-handling |
1106 | * code here, rather than relying on getopt. */ | |
50135767 | 1107 | option_error(); |
65417579 | 1108 | exit_cleanup(RERR_SYNTAX); |
b11ed3b1 | 1109 | } |
5d6bcd44 | 1110 | |
7a6421fa | 1111 | signal(SIGINT,SIGNAL_CAST sig_int); |
7a6421fa | 1112 | signal(SIGHUP,SIGNAL_CAST sig_int); |
8638dd48 | 1113 | signal(SIGTERM,SIGNAL_CAST sig_int); |
6b83141d | 1114 | |
34758d5c MP |
1115 | /* Ignore SIGPIPE; we consistently check error codes and will |
1116 | * see the EPIPE. */ | |
1117 | signal(SIGPIPE, SIG_IGN); | |
1118 | ||
c226b7c2 | 1119 | /* Initialize push_dir here because on some old systems getcwd |
9af87151 WD |
1120 | * (implemented by forking "pwd" and reading its output) doesn't |
1121 | * work when there are other child processes. Also, on all systems | |
1122 | * that implement getcwd that way "pwd" can't be found after chroot. */ | |
59187666 | 1123 | push_dir(NULL); |
c226b7c2 | 1124 | |
44e9e221 WD |
1125 | init_flist(); |
1126 | ||
b9f592fb WD |
1127 | if (write_batch || read_batch) { |
1128 | if (write_batch) | |
66a9dc96 | 1129 | write_batch_shell_file(orig_argc, orig_argv, argc); |
b9f592fb | 1130 | |
dbbab0c4 WD |
1131 | if (read_batch && strcmp(batch_name, "-") == 0) |
1132 | batch_fd = STDIN_FILENO; | |
1133 | else { | |
1134 | batch_fd = do_open(batch_name, | |
b9f592fb WD |
1135 | write_batch ? O_WRONLY | O_CREAT | O_TRUNC |
1136 | : O_RDONLY, S_IRUSR | S_IWUSR); | |
dbbab0c4 | 1137 | } |
b9f592fb WD |
1138 | if (batch_fd < 0) { |
1139 | rsyserr(FERROR, errno, "Batch file %s open error", | |
71903f60 | 1140 | full_fname(batch_name)); |
b9f592fb WD |
1141 | exit_cleanup(RERR_FILEIO); |
1142 | } | |
9459290a WD |
1143 | if (read_batch) |
1144 | read_stream_flags(batch_fd); | |
6902ed17 MP |
1145 | } |
1146 | ||
75aeac44 | 1147 | if (am_daemon && !am_server) |
7a6421fa | 1148 | return daemon_main(); |
f0fca04e | 1149 | |
08ac228f AT |
1150 | if (argc < 1) { |
1151 | usage(FERROR); | |
65417579 | 1152 | exit_cleanup(RERR_SYNTAX); |
08ac228f AT |
1153 | } |
1154 | ||
7a6421fa | 1155 | if (am_server) { |
f0359dd0 AT |
1156 | set_nonblocking(STDIN_FILENO); |
1157 | set_nonblocking(STDOUT_FILENO); | |
75aeac44 WD |
1158 | if (am_daemon) |
1159 | return start_daemon(STDIN_FILENO, STDOUT_FILENO); | |
7a6421fa AT |
1160 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); |
1161 | } | |
c627d613 | 1162 | |
ff81e809 | 1163 | ret = start_client(argc, argv); |
d9c7edf6 | 1164 | if (ret == -1) |
9098bbf3 | 1165 | exit_cleanup(RERR_STARTCLIENT); |
088aac85 | 1166 | else |
9098bbf3 MP |
1167 | exit_cleanup(ret); |
1168 | ||
0f5a04e3 | 1169 | return ret; |
c627d613 | 1170 | } |