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 | |
b35d0d8e | 26 | extern struct stats stats; |
32eda096 | 27 | extern int am_root; |
d9c7edf6 WD |
28 | extern int am_server; |
29 | extern int am_sender; | |
b695f242 | 30 | extern int am_generator; |
d9c7edf6 | 31 | extern int am_daemon; |
7a6421fa | 32 | extern int verbose; |
32eda096 | 33 | extern int blocking_io; |
48a1ff0d | 34 | extern int delete_before; |
32eda096 WD |
35 | extern int daemon_over_rsh; |
36 | extern int do_stats; | |
37 | extern int dry_run; | |
38 | extern int list_only; | |
32eda096 WD |
39 | extern int log_got_error; |
40 | extern int module_id; | |
41 | extern int orig_umask; | |
bb6721dc | 42 | extern int copy_links; |
83926d3c | 43 | extern int keep_dirlinks; |
32eda096 | 44 | extern int preserve_hard_links; |
d04e9c51 | 45 | extern int protocol_version; |
32eda096 WD |
46 | extern int recurse; |
47 | extern int relative_paths; | |
48 | extern int rsync_port; | |
b1df18d7 | 49 | extern int whole_file; |
32eda096 WD |
50 | extern int read_batch; |
51 | extern int write_batch; | |
b9f592fb | 52 | extern int batch_fd; |
c0d8e84c | 53 | extern int batch_gen_fd; |
32eda096 WD |
54 | extern int filesfrom_fd; |
55 | extern pid_t cleanup_child_pid; | |
56 | extern char *files_from; | |
57 | extern char *remote_filesfrom_file; | |
7162c65d | 58 | extern char *partial_dir; |
c3fad2e2 | 59 | extern char *basis_dir[]; |
32eda096 WD |
60 | extern char *rsync_path; |
61 | extern char *shell_cmd; | |
9b3318b0 | 62 | extern char *batch_name; |
57dee64e WD |
63 | |
64 | int local_server = 0; | |
c627d613 | 65 | |
91c5833b WD |
66 | /* There's probably never more than at most 2 outstanding child processes, |
67 | * but set it higher, just in case. */ | |
ee7118a8 DD |
68 | #define MAXCHILDPROCS 5 |
69 | ||
70 | struct pid_status { | |
71 | pid_t pid; | |
72 | int status; | |
73 | } pid_stat_table[MAXCHILDPROCS]; | |
74 | ||
e5a2b854 | 75 | static void show_malloc_stats(void); |
82980a23 AT |
76 | |
77 | /**************************************************************************** | |
78 | wait for a process to exit, calling io_flush while waiting | |
79 | ****************************************************************************/ | |
80 | void wait_process(pid_t pid, int *status) | |
81 | { | |
ee7118a8 DD |
82 | pid_t waited_pid; |
83 | int cnt; | |
84 | ||
85 | while ((waited_pid = waitpid(pid, status, WNOHANG)) == 0) { | |
a24c6870 | 86 | msleep(20); |
f1e3656e | 87 | io_flush(FULL_FLUSH); |
82980a23 | 88 | } |
d9c7edf6 | 89 | |
6fb812f7 | 90 | if (waited_pid == -1 && errno == ECHILD) { |
ee7118a8 DD |
91 | /* status of requested child no longer available. |
92 | * check to see if it was processed by the sigchld_handler. | |
93 | */ | |
94 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { | |
95 | if (pid == pid_stat_table[cnt].pid) { | |
96 | *status = pid_stat_table[cnt].status; | |
97 | pid_stat_table[cnt].pid = 0; | |
98 | break; | |
99 | } | |
100 | } | |
101 | } | |
102 | ||
d9c7edf6 WD |
103 | /* TODO: If the child exited on a signal, then log an |
104 | * appropriate error message. Perhaps we should also accept a | |
105 | * message describing the purpose of the child. Also indicate | |
106 | * this to the caller so that thhey know something went | |
107 | * wrong. */ | |
82980a23 AT |
108 | *status = WEXITSTATUS(*status); |
109 | } | |
110 | ||
b9f592fb WD |
111 | /* This function gets called from all 3 processes. We want the client side |
112 | * to actually output the text, but the sender is the only process that has | |
113 | * all the stats we need. So, if we're a client sender, we do the report. | |
114 | * If we're a server sender, we write the stats on the supplied fd. If | |
115 | * we're the client receiver we read the stats from the supplied fd and do | |
116 | * the report. All processes might also generate a set of debug stats, if | |
117 | * the verbose level is high enough (this is the only thing that the | |
118 | * generator process and the server receiver ever do here). */ | |
c627d613 AT |
119 | static void report(int f) |
120 | { | |
b9f592fb WD |
121 | /* Cache two stats because the read/write code can change it. */ |
122 | int64 total_read = stats.total_read; | |
123 | int64 total_written = stats.total_written; | |
7a6421fa | 124 | time_t t = time(NULL); |
7a6421fa | 125 | |
7bb7058e | 126 | if (do_stats && verbose > 1) { |
5c15e29f | 127 | /* These come out from every process */ |
7bb7058e | 128 | show_malloc_stats(); |
86943126 | 129 | show_flist_stats(); |
5c15e29f MP |
130 | } |
131 | ||
e5fbaa71 S |
132 | if (am_generator) |
133 | return; | |
134 | ||
248fbb8c | 135 | if (am_daemon) { |
a9766ef1 | 136 | log_exit(0, __FILE__, __LINE__); |
83926d3c WD |
137 | if (f == -1 || !am_sender) |
138 | return; | |
248fbb8c AT |
139 | } |
140 | ||
e19452a9 | 141 | if (am_server) { |
3e491682 | 142 | if (am_sender) { |
b9f592fb WD |
143 | write_longint(f, total_read); |
144 | write_longint(f, total_written); | |
145 | write_longint(f, stats.total_size); | |
f0f7e760 WD |
146 | if (protocol_version >= 29) { |
147 | write_longint(f, stats.flist_buildtime); | |
148 | write_longint(f, stats.flist_xfertime); | |
149 | } | |
e19452a9 | 150 | } |
7a6421fa AT |
151 | return; |
152 | } | |
e19452a9 DD |
153 | |
154 | /* this is the client */ | |
d9c7edf6 | 155 | |
3e491682 | 156 | if (!am_sender) { |
58c5c245 WD |
157 | /* Read the first two in opposite order because the meaning of |
158 | * read/write swaps when switching from sender to receiver. */ | |
b9f592fb WD |
159 | total_written = read_longint(f); |
160 | total_read = read_longint(f); | |
a800434a | 161 | stats.total_size = read_longint(f); |
f0f7e760 WD |
162 | if (protocol_version >= 29) { |
163 | stats.flist_buildtime = read_longint(f); | |
164 | stats.flist_xfertime = read_longint(f); | |
165 | } | |
b9f592fb WD |
166 | } else if (write_batch) { |
167 | /* The --read-batch process is going to be a client | |
168 | * receiver, so we need to give it the stats. */ | |
169 | write_longint(batch_fd, total_read); | |
170 | write_longint(batch_fd, total_written); | |
171 | write_longint(batch_fd, stats.total_size); | |
f0f7e760 WD |
172 | if (protocol_version >= 29) { |
173 | write_longint(batch_fd, stats.flist_buildtime); | |
174 | write_longint(batch_fd, stats.flist_xfertime); | |
175 | } | |
a800434a AT |
176 | } |
177 | ||
178 | if (do_stats) { | |
1f658d42 | 179 | rprintf(FINFO,"\nNumber of files: %d\n", stats.num_files); |
d9c7edf6 WD |
180 | rprintf(FINFO,"Number of files transferred: %d\n", |
181 | stats.num_transferred_files); | |
182 | rprintf(FINFO,"Total file size: %.0f bytes\n", | |
183 | (double)stats.total_size); | |
184 | rprintf(FINFO,"Total transferred file size: %.0f bytes\n", | |
185 | (double)stats.total_transferred_size); | |
186 | rprintf(FINFO,"Literal data: %.0f bytes\n", | |
187 | (double)stats.literal_data); | |
188 | rprintf(FINFO,"Matched data: %.0f bytes\n", | |
189 | (double)stats.matched_data); | |
1f658d42 | 190 | rprintf(FINFO,"File list size: %d\n", stats.flist_size); |
f0f7e760 WD |
191 | if (stats.flist_buildtime) { |
192 | rprintf(FINFO, | |
193 | "File list generation time: %.3f seconds\n", | |
194 | (double)stats.flist_buildtime / 1000); | |
195 | rprintf(FINFO, | |
196 | "File list transfer time: %.3f seconds\n", | |
197 | (double)stats.flist_xfertime / 1000); | |
198 | } | |
4de2a174 | 199 | rprintf(FINFO,"Total bytes sent: %.0f\n", |
b9f592fb | 200 | (double)total_written); |
4de2a174 | 201 | rprintf(FINFO,"Total bytes received: %.0f\n", |
b9f592fb | 202 | (double)total_read); |
7a6421fa | 203 | } |
d9c7edf6 | 204 | |
e19452a9 | 205 | if (verbose || do_stats) { |
b9f592fb | 206 | rprintf(FINFO, |
4de2a174 | 207 | "\nsent %.0f bytes received %.0f bytes %.2f bytes/sec\n", |
b9f592fb WD |
208 | (double)total_written, (double)total_read, |
209 | (total_written + total_read)/(0.5 + (t - starttime))); | |
210 | rprintf(FINFO, "total size is %.0f speedup is %.2f\n", | |
d9c7edf6 | 211 | (double)stats.total_size, |
b9f592fb | 212 | (double)stats.total_size / (total_written+total_read)); |
e19452a9 | 213 | } |
fc8a6b97 AT |
214 | |
215 | fflush(stdout); | |
216 | fflush(stderr); | |
c627d613 AT |
217 | } |
218 | ||
219 | ||
e5a2b854 MP |
220 | /** |
221 | * If our C library can get malloc statistics, then show them to FINFO | |
222 | **/ | |
223 | static void show_malloc_stats(void) | |
224 | { | |
25ff0441 | 225 | #if HAVE_MALLINFO |
e5a2b854 MP |
226 | struct mallinfo mi; |
227 | ||
228 | mi = mallinfo(); | |
229 | ||
ce672562 | 230 | rprintf(FINFO, "\n" RSYNC_NAME "[%d] (%s%s%s) heap statistics:\n", |
f846a9bf WD |
231 | getpid(), am_server ? "server " : "", |
232 | am_daemon ? "daemon " : "", who_am_i()); | |
233 | rprintf(FINFO, " arena: %10ld (bytes from sbrk)\n", | |
234 | (long)mi.arena); | |
235 | rprintf(FINFO, " ordblks: %10ld (chunks not in use)\n", | |
236 | (long)mi.ordblks); | |
237 | rprintf(FINFO, " smblks: %10ld\n", | |
238 | (long)mi.smblks); | |
239 | rprintf(FINFO, " hblks: %10ld (chunks from mmap)\n", | |
240 | (long)mi.hblks); | |
241 | rprintf(FINFO, " hblkhd: %10ld (bytes from mmap)\n", | |
242 | (long)mi.hblkhd); | |
243 | rprintf(FINFO, " allmem: %10ld (bytes from sbrk + mmap)\n", | |
244 | (long)mi.arena + mi.hblkhd); | |
245 | rprintf(FINFO, " usmblks: %10ld\n", | |
246 | (long)mi.usmblks); | |
247 | rprintf(FINFO, " fsmblks: %10ld\n", | |
248 | (long)mi.fsmblks); | |
249 | rprintf(FINFO, " uordblks: %10ld (bytes used)\n", | |
250 | (long)mi.uordblks); | |
251 | rprintf(FINFO, " fordblks: %10ld (bytes free)\n", | |
252 | (long)mi.fordblks); | |
253 | rprintf(FINFO, " keepcost: %10ld (bytes in releasable chunk)\n", | |
254 | (long)mi.keepcost); | |
e5a2b854 MP |
255 | #endif /* HAVE_MALLINFO */ |
256 | } | |
257 | ||
258 | ||
0882faa2 | 259 | /* Start the remote shell. cmd may be NULL to use the default. */ |
6c2e5b56 WD |
260 | static pid_t do_cmd(char *cmd, char *machine, char *user, char *path, |
261 | int *f_in, int *f_out) | |
c627d613 | 262 | { |
6c2e5b56 | 263 | int i, argc = 0; |
887e553f | 264 | char *args[MAX_ARGS]; |
19b27a48 | 265 | pid_t ret; |
6c2e5b56 | 266 | char *tok, *dir = NULL; |
bb4aa89c | 267 | int dash_l_set = 0; |
366345fe | 268 | |
088aac85 | 269 | if (!read_batch && !local_server) { |
9af87151 | 270 | char *rsh_env = getenv(RSYNC_RSH_ENV); |
366345fe | 271 | if (!cmd) |
9af87151 | 272 | cmd = rsh_env; |
366345fe AT |
273 | if (!cmd) |
274 | cmd = RSYNC_RSH; | |
275 | cmd = strdup(cmd); | |
d9c7edf6 | 276 | if (!cmd) |
366345fe AT |
277 | goto oom; |
278 | ||
887e553f | 279 | for (tok = strtok(cmd, " "); tok; tok = strtok(NULL, " ")) { |
e7a392c7 WD |
280 | /* Comparison leaves rooms for server_options(). */ |
281 | if (argc >= MAX_ARGS - 100) { | |
282 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
887e553f WD |
283 | exit_cleanup(RERR_SYNTAX); |
284 | } | |
366345fe | 285 | args[argc++] = tok; |
887e553f | 286 | } |
c627d613 | 287 | |
d9c7edf6 | 288 | /* check to see if we've already been given '-l user' in |
9af87151 | 289 | * the remote-shell command */ |
bb4aa89c WD |
290 | for (i = 0; i < argc-1; i++) { |
291 | if (!strcmp(args[i], "-l") && args[i+1][0] != '-') | |
292 | dash_l_set = 1; | |
293 | } | |
294 | ||
7b8356d0 | 295 | #if HAVE_REMSH |
366345fe AT |
296 | /* remsh (on HPUX) takes the arguments the other way around */ |
297 | args[argc++] = machine; | |
bb4aa89c | 298 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
299 | args[argc++] = "-l"; |
300 | args[argc++] = user; | |
301 | } | |
7b8356d0 | 302 | #else |
bb4aa89c | 303 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
304 | args[argc++] = "-l"; |
305 | args[argc++] = user; | |
306 | } | |
307 | args[argc++] = machine; | |
7b8356d0 | 308 | #endif |
c627d613 | 309 | |
366345fe | 310 | args[argc++] = rsync_path; |
c627d613 | 311 | |
9af87151 | 312 | if (blocking_io < 0) { |
90e22f4b WD |
313 | char *cp; |
314 | if ((cp = strrchr(cmd, '/')) != NULL) | |
315 | cp++; | |
316 | else | |
317 | cp = cmd; | |
318 | if (strcmp(cp, "rsh") == 0 || strcmp(cp, "remsh") == 0) | |
319 | blocking_io = 1; | |
66b71163 | 320 | } |
e384bfbd | 321 | |
93689aa5 | 322 | server_options(args,&argc); |
e7a392c7 WD |
323 | |
324 | if (argc >= MAX_ARGS - 2) { | |
325 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
326 | exit_cleanup(RERR_SYNTAX); | |
327 | } | |
366345fe | 328 | } |
c627d613 | 329 | |
366345fe | 330 | args[argc++] = "."; |
76076c4b | 331 | |
d9c7edf6 | 332 | if (!daemon_over_rsh && path && *path) |
366345fe | 333 | args[argc++] = path; |
c627d613 | 334 | |
366345fe | 335 | args[argc] = NULL; |
c627d613 | 336 | |
366345fe | 337 | if (verbose > 3) { |
9486289c | 338 | rprintf(FINFO,"cmd="); |
e7a392c7 | 339 | for (i = 0; i < argc; i++) |
71903f60 | 340 | rprintf(FINFO, "%s ", safe_fname(args[i])); |
9486289c | 341 | rprintf(FINFO,"\n"); |
366345fe AT |
342 | } |
343 | ||
c0d8e84c WD |
344 | if (read_batch) { |
345 | int from_gen_pipe[2]; | |
346 | if (fd_pair(from_gen_pipe) < 0) { | |
347 | rsyserr(FERROR, errno, "pipe"); | |
348 | exit_cleanup(RERR_IPC); | |
349 | } | |
350 | batch_gen_fd = from_gen_pipe[0]; | |
351 | *f_out = from_gen_pipe[1]; | |
352 | *f_in = batch_fd; | |
353 | ret = -1; /* no child pid */ | |
354 | } else if (local_server) { | |
b1df18d7 WD |
355 | /* If the user didn't request --[no-]whole-file, force |
356 | * it on, but only if we're not batch processing. */ | |
c0d8e84c | 357 | if (whole_file < 0 && !write_batch) |
b1df18d7 | 358 | whole_file = 1; |
25d34a5c | 359 | ret = local_child(argc, args, f_in, f_out, child_main); |
c0d8e84c | 360 | } else |
366345fe | 361 | ret = piped_child(args,f_in,f_out); |
c627d613 | 362 | |
3a69fad0 WD |
363 | if (dir) |
364 | free(dir); | |
82306bf6 | 365 | |
366345fe | 366 | return ret; |
c627d613 AT |
367 | |
368 | oom: | |
366345fe AT |
369 | out_of_memory("do_cmd"); |
370 | return 0; /* not reached */ | |
c627d613 AT |
371 | } |
372 | ||
373 | ||
c627d613 AT |
374 | static char *get_local_name(struct file_list *flist,char *name) |
375 | { | |
7a6421fa | 376 | STRUCT_STAT st; |
87cc45e1 | 377 | int e; |
c627d613 | 378 | |
c95da96a | 379 | if (verbose > 2) |
d9c7edf6 | 380 | rprintf(FINFO,"get_local_name count=%d %s\n", |
1f0610ef DD |
381 | flist->count, NS(name)); |
382 | ||
d9c7edf6 | 383 | if (!name) |
1f0610ef | 384 | return NULL; |
c95da96a | 385 | |
1ff5450d AT |
386 | if (do_stat(name,&st) == 0) { |
387 | if (S_ISDIR(st.st_mode)) { | |
59187666 | 388 | if (!push_dir(name)) { |
982e05bb WD |
389 | rsyserr(FERROR, errno, "push_dir#1 %s failed", |
390 | full_fname(name)); | |
65417579 | 391 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
392 | } |
393 | return NULL; | |
394 | } | |
395 | if (flist->count > 1) { | |
396 | rprintf(FERROR,"ERROR: destination must be a directory when copying more than 1 file\n"); | |
65417579 | 397 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
398 | } |
399 | return name; | |
400 | } | |
401 | ||
87cc45e1 | 402 | if (flist->count <= 1 && ((e = strlen(name)) <= 1 || name[e-1] != '/')) |
1ff5450d AT |
403 | return name; |
404 | ||
1ff5450d | 405 | if (do_mkdir(name,0777 & ~orig_umask) != 0) { |
982e05bb | 406 | rsyserr(FERROR, errno, "mkdir %s failed", full_fname(name)); |
65417579 | 407 | exit_cleanup(RERR_FILEIO); |
e5a96f0f WD |
408 | } |
409 | if (verbose > 0) | |
71903f60 | 410 | rprintf(FINFO, "created directory %s\n", safe_fname(name)); |
e5a96f0f WD |
411 | |
412 | if (dry_run) { | |
413 | dry_run++; | |
414 | return NULL; | |
1ff5450d AT |
415 | } |
416 | ||
59187666 | 417 | if (!push_dir(name)) { |
982e05bb WD |
418 | rsyserr(FERROR, errno, "push_dir#2 %s failed", |
419 | full_fname(name)); | |
65417579 | 420 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
421 | } |
422 | ||
423 | return NULL; | |
c627d613 AT |
424 | } |
425 | ||
426 | ||
9486289c | 427 | static void do_server_sender(int f_in, int f_out, int argc,char *argv[]) |
c627d613 | 428 | { |
7a6421fa AT |
429 | int i; |
430 | struct file_list *flist; | |
431 | char *dir = argv[0]; | |
c627d613 | 432 | |
45e08edb WD |
433 | if (verbose > 2) { |
434 | rprintf(FINFO, "server_sender starting pid=%ld\n", | |
435 | (long)getpid()); | |
436 | } | |
d9c7edf6 | 437 | |
2adbcdc7 | 438 | if (am_daemon && lp_write_only(module_id)) { |
7a92ded3 WD |
439 | rprintf(FERROR, "ERROR: module is write only\n"); |
440 | exit_cleanup(RERR_SYNTAX); | |
441 | return; | |
442 | } | |
443 | ||
59187666 | 444 | if (!relative_paths && !push_dir(dir)) { |
982e05bb WD |
445 | rsyserr(FERROR, errno, "push_dir#3 %s failed", |
446 | full_fname(dir)); | |
65417579 | 447 | exit_cleanup(RERR_FILESELECT); |
7a6421fa AT |
448 | } |
449 | argc--; | |
450 | argv++; | |
d9c7edf6 | 451 | |
7a6421fa AT |
452 | if (strcmp(dir,".")) { |
453 | int l = strlen(dir); | |
d9c7edf6 | 454 | if (strcmp(dir,"/") == 0) |
7a6421fa | 455 | l = 0; |
e7a392c7 | 456 | for (i = 0; i < argc; i++) |
7a6421fa AT |
457 | argv[i] += l+1; |
458 | } | |
c627d613 | 459 | |
48a1ff0d | 460 | if (argc == 0 && (recurse || list_only)) { |
e1f67417 | 461 | argc = 1; |
7a6421fa AT |
462 | argv--; |
463 | argv[0] = "."; | |
464 | } | |
d9c7edf6 | 465 | |
7a6421fa | 466 | flist = send_file_list(f_out,argc,argv); |
8d9dc9f9 AT |
467 | if (!flist || flist->count == 0) { |
468 | exit_cleanup(0); | |
469 | } | |
470 | ||
da3478b2 WD |
471 | io_start_buffering_in(); |
472 | io_start_buffering_out(); | |
473 | ||
7a6421fa | 474 | send_files(flist,f_out,f_in); |
f1e3656e | 475 | io_flush(FULL_FLUSH); |
7a6421fa | 476 | report(f_out); |
d04e9c51 | 477 | if (protocol_version >= 24) { |
d9c7edf6 | 478 | /* final goodbye message */ |
64c3523a WD |
479 | read_int(f_in); |
480 | } | |
f1e3656e | 481 | io_flush(FULL_FLUSH); |
7a6421fa | 482 | exit_cleanup(0); |
c627d613 AT |
483 | } |
484 | ||
485 | ||
dc5ddbcc AT |
486 | static int do_recv(int f_in,int f_out,struct file_list *flist,char *local_name) |
487 | { | |
d186eb1a | 488 | int pid; |
e1f67417 | 489 | int status = 0; |
41cfde6b | 490 | int error_pipe[2], name_pipe[2]; |
7162c65d | 491 | BOOL need_name_pipe = (basis_dir[0] || partial_dir) && !dry_run; |
dc5ddbcc | 492 | |
bb6721dc WD |
493 | /* The receiving side mustn't obey this, or an existing symlink that |
494 | * points to an identical file won't be replaced by the referent. */ | |
495 | copy_links = 0; | |
496 | ||
d186eb1a AT |
497 | if (preserve_hard_links) |
498 | init_hard_links(flist); | |
dc5ddbcc | 499 | |
864146de WD |
500 | if (delete_before && !local_name && flist->count > 0) { |
501 | /* Moved here from recv_files() to prevent a race condition */ | |
502 | delete_files(flist); | |
6957ae33 AT |
503 | } |
504 | ||
41cfde6b WD |
505 | if (fd_pair(error_pipe) < 0 |
506 | || (need_name_pipe && fd_pair(name_pipe) < 0)) { | |
ab759cd2 | 507 | rsyserr(FERROR, errno, "pipe failed in do_recv"); |
c8f2f857 | 508 | exit_cleanup(RERR_IPC); |
554e0a8d | 509 | } |
d9c7edf6 | 510 | |
f1e3656e | 511 | io_flush(NORMAL_FLUSH); |
c6e7fcb4 | 512 | |
ba449e44 | 513 | if ((pid = do_fork()) == -1) { |
c8f2f857 | 514 | rsyserr(FERROR, errno, "fork failed in do_recv"); |
ba449e44 WD |
515 | exit_cleanup(RERR_IPC); |
516 | } | |
517 | ||
518 | if (pid == 0) { | |
554e0a8d | 519 | close(error_pipe[0]); |
41cfde6b WD |
520 | if (need_name_pipe) { |
521 | close(name_pipe[1]); | |
522 | set_blocking(name_pipe[0]); | |
523 | } else | |
524 | name_pipe[0] = -1; | |
3a69fad0 WD |
525 | if (f_in != f_out) |
526 | close(f_out); | |
e08c9610 | 527 | |
554e0a8d | 528 | /* we can't let two processes write to the socket at one time */ |
9eeb3b9c | 529 | close_multiplexing_out(); |
554e0a8d AT |
530 | |
531 | /* set place to send errors */ | |
f1e3656e | 532 | set_msg_fd_out(error_pipe[1]); |
554e0a8d | 533 | |
41cfde6b | 534 | recv_files(f_in, flist, local_name, name_pipe[0]); |
f1e3656e | 535 | io_flush(FULL_FLUSH); |
ba5e128d | 536 | report(f_in); |
e08c9610 | 537 | |
f1e3656e WD |
538 | send_msg(MSG_DONE, "", 0); |
539 | io_flush(FULL_FLUSH); | |
4a748188 | 540 | /* finally we go to sleep until our parent kills us |
9af87151 WD |
541 | * with a USR2 signal. We sleep for a short time as on |
542 | * some OSes a signal won't interrupt a sleep! */ | |
f1e3656e WD |
543 | while (1) |
544 | msleep(20); | |
d186eb1a | 545 | } |
dc5ddbcc | 546 | |
b695f242 | 547 | am_generator = 1; |
9eeb3b9c | 548 | close_multiplexing_in(); |
b9f592fb WD |
549 | if (write_batch) |
550 | stop_write_batch(); | |
b695f242 | 551 | |
554e0a8d | 552 | close(error_pipe[1]); |
41cfde6b WD |
553 | if (need_name_pipe) { |
554 | close(name_pipe[0]); | |
555 | set_nonblocking(name_pipe[1]); | |
556 | } else | |
557 | name_pipe[1] = -1; | |
3a69fad0 WD |
558 | if (f_in != f_out) |
559 | close(f_in); | |
e1b3d5c4 | 560 | |
da3478b2 | 561 | io_start_buffering_out(); |
b3e10ed7 | 562 | |
f1e3656e | 563 | set_msg_fd_in(error_pipe[0]); |
554e0a8d | 564 | |
41cfde6b | 565 | generate_files(f_out, flist, local_name, name_pipe[1]); |
8d9dc9f9 | 566 | |
e5fbaa71 | 567 | report(-1); |
f1e3656e | 568 | io_flush(FULL_FLUSH); |
d04e9c51 | 569 | if (protocol_version >= 24) { |
8ada7518 AT |
570 | /* send a final goodbye message */ |
571 | write_int(f_out, -1); | |
572 | } | |
f1e3656e | 573 | io_flush(FULL_FLUSH); |
8ada7518 | 574 | |
f1e3656e | 575 | set_msg_fd_in(-1); |
089a2435 | 576 | kill(pid, SIGUSR2); |
d79d1c69 | 577 | wait_process(pid, &status); |
d186eb1a | 578 | return status; |
dc5ddbcc AT |
579 | } |
580 | ||
c627d613 | 581 | |
9486289c | 582 | static void do_server_recv(int f_in, int f_out, int argc,char *argv[]) |
c627d613 | 583 | { |
7a6421fa AT |
584 | int status; |
585 | struct file_list *flist; | |
6c2e5b56 | 586 | char *local_name = NULL; |
7a6421fa | 587 | char *dir = NULL; |
07bff66f WD |
588 | int save_verbose = verbose; |
589 | ||
590 | if (filesfrom_fd >= 0) { | |
591 | /* We can't mix messages with files-from data on the socket, | |
592 | * so temporarily turn off verbose messages. */ | |
593 | verbose = 0; | |
594 | } | |
f0fca04e | 595 | |
45e08edb WD |
596 | if (verbose > 2) { |
597 | rprintf(FINFO, "server_recv(%d) starting pid=%ld\n", | |
598 | argc, (long)getpid()); | |
599 | } | |
09b7f5db | 600 | |
2adbcdc7 | 601 | if (am_daemon && lp_read_only(module_id)) { |
09b7f5db AT |
602 | rprintf(FERROR,"ERROR: module is read only\n"); |
603 | exit_cleanup(RERR_SYNTAX); | |
604 | return; | |
605 | } | |
606 | ||
d9c7edf6 | 607 | |
7a6421fa AT |
608 | if (argc > 0) { |
609 | dir = argv[0]; | |
610 | argc--; | |
611 | argv++; | |
59187666 | 612 | if (!am_daemon && !push_dir(dir)) { |
982e05bb WD |
613 | rsyserr(FERROR, errno, "push_dir#4 %s failed", |
614 | full_fname(dir)); | |
65417579 | 615 | exit_cleanup(RERR_FILESELECT); |
d9c7edf6 | 616 | } |
7a6421fa | 617 | } |
c627d613 | 618 | |
da3478b2 | 619 | io_start_buffering_in(); |
57dee64e | 620 | recv_filter_list(f_in); |
c627d613 | 621 | |
7c2a9e76 | 622 | if (filesfrom_fd >= 0) { |
07bff66f WD |
623 | /* We need to send the files-from names to the sender at the |
624 | * same time that we receive the file-list from them, so we | |
625 | * need the IO routines to automatically write out the names | |
626 | * onto our f_out socket as we read the file-list. This | |
627 | * avoids both deadlock and extra delays/buffers. */ | |
7c2a9e76 WD |
628 | io_set_filesfrom_fds(filesfrom_fd, f_out); |
629 | filesfrom_fd = -1; | |
630 | } | |
631 | ||
b9f592fb | 632 | flist = recv_file_list(f_in); |
07bff66f | 633 | verbose = save_verbose; |
4c36a13e AT |
634 | if (!flist) { |
635 | rprintf(FERROR,"server_recv: recv_file_list error\n"); | |
65417579 | 636 | exit_cleanup(RERR_FILESELECT); |
7a6421fa | 637 | } |
d9c7edf6 WD |
638 | |
639 | if (argc > 0) { | |
7a6421fa AT |
640 | if (strcmp(dir,".")) { |
641 | argv[0] += strlen(dir); | |
3a69fad0 WD |
642 | if (argv[0][0] == '/') |
643 | argv[0]++; | |
7a6421fa AT |
644 | } |
645 | local_name = get_local_name(flist,argv[0]); | |
646 | } | |
c627d613 | 647 | |
7a6421fa AT |
648 | status = do_recv(f_in,f_out,flist,local_name); |
649 | exit_cleanup(status); | |
c627d613 AT |
650 | } |
651 | ||
652 | ||
734a94a2 | 653 | int child_main(int argc, char *argv[]) |
25d34a5c MP |
654 | { |
655 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); | |
734a94a2 | 656 | return 0; |
25d34a5c MP |
657 | } |
658 | ||
659 | ||
9486289c | 660 | void start_server(int f_in, int f_out, int argc, char *argv[]) |
366345fe | 661 | { |
f0359dd0 AT |
662 | set_nonblocking(f_in); |
663 | set_nonblocking(f_out); | |
664 | ||
da3478b2 WD |
665 | io_set_sock_fds(f_in, f_out); |
666 | setup_protocol(f_out, f_in); | |
667 | ||
d04e9c51 | 668 | if (protocol_version >= 23) |
da3478b2 | 669 | io_start_multiplex_out(); |
7a6421fa | 670 | |
7a6421fa | 671 | if (am_sender) { |
83926d3c | 672 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
9b3318b0 | 673 | |
7842418b | 674 | recv_filter_list(f_in); |
7a6421fa AT |
675 | do_server_sender(f_in, f_out, argc, argv); |
676 | } else { | |
677 | do_server_recv(f_in, f_out, argc, argv); | |
678 | } | |
679 | exit_cleanup(0); | |
366345fe AT |
680 | } |
681 | ||
0ba48136 MP |
682 | |
683 | /* | |
684 | * This is called once the connection has been negotiated. It is used | |
685 | * for rsyncd, remote-shell, and local connections. | |
686 | */ | |
19b27a48 | 687 | int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[]) |
9486289c | 688 | { |
088aac85 | 689 | struct file_list *flist = NULL; |
9486289c AT |
690 | int status = 0, status2 = 0; |
691 | char *local_name = NULL; | |
19b27a48 AT |
692 | |
693 | cleanup_child_pid = pid; | |
67a28eb2 | 694 | if (!read_batch) { |
b9f592fb WD |
695 | set_nonblocking(f_in); |
696 | set_nonblocking(f_out); | |
697 | } | |
f0359dd0 | 698 | |
da3478b2 | 699 | io_set_sock_fds(f_in, f_out); |
6d7b6081 AT |
700 | setup_protocol(f_out,f_in); |
701 | ||
b9f592fb | 702 | if (protocol_version >= 23 && !read_batch) |
da3478b2 | 703 | io_start_multiplex_in(); |
d9c7edf6 | 704 | |
18882701 WD |
705 | /* We set our stderr file handle to blocking because ssh might have |
706 | * set it to non-blocking. This can be particularly troublesome if | |
707 | * stderr is a clone of stdout, because ssh would have set our stdout | |
708 | * to non-blocking at the same time (which can easily cause us to lose | |
709 | * output from our print statements). This kluge shouldn't cause ssh | |
710 | * any problems for how we use it. Note also that we delayed setting | |
711 | * this until after the above protocol setup so that we know for sure | |
712 | * that ssh is done twiddling its file descriptors. */ | |
713 | set_blocking(STDERR_FILENO); | |
714 | ||
9486289c | 715 | if (am_sender) { |
83926d3c | 716 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
da3478b2 | 717 | io_start_buffering_out(); |
a0a33ee5 WD |
718 | if (!remote_filesfrom_file) |
719 | set_msg_fd_in(f_in); | |
57dee64e | 720 | send_filter_list(f_out); |
7c2a9e76 WD |
721 | if (remote_filesfrom_file) |
722 | filesfrom_fd = f_in; | |
b9f592fb WD |
723 | |
724 | if (write_batch) | |
725 | start_write_batch(f_out); | |
64c3523a | 726 | if (!read_batch) /* don't write to pipe */ |
d9c7edf6 | 727 | flist = send_file_list(f_out,argc,argv); |
a0a33ee5 | 728 | set_msg_fd_in(-1); |
d9c7edf6 | 729 | if (verbose > 3) |
9486289c | 730 | rprintf(FINFO,"file list sent\n"); |
e1b3d5c4 | 731 | |
f1e3656e | 732 | io_flush(NORMAL_FLUSH); |
9486289c | 733 | send_files(flist,f_out,f_in); |
f1e3656e | 734 | io_flush(FULL_FLUSH); |
d04e9c51 | 735 | if (protocol_version >= 24) { |
d9c7edf6 | 736 | /* final goodbye message */ |
6c65e146 AT |
737 | read_int(f_in); |
738 | } | |
9486289c AT |
739 | if (pid != -1) { |
740 | if (verbose > 3) | |
08a740ff | 741 | rprintf(FINFO,"client_run waiting on %d\n", (int) pid); |
f1e3656e | 742 | io_flush(FULL_FLUSH); |
d79d1c69 | 743 | wait_process(pid, &status); |
9486289c | 744 | } |
3d382777 | 745 | report(-1); |
f1e3656e | 746 | io_flush(FULL_FLUSH); |
9486289c AT |
747 | exit_cleanup(status); |
748 | } | |
f7632fc6 | 749 | |
48a1ff0d WD |
750 | if (argc == 0) |
751 | list_only |= 1; | |
d9c7edf6 | 752 | |
57dee64e | 753 | send_filter_list(read_batch ? -1 : f_out); |
d9c7edf6 | 754 | |
7c2a9e76 WD |
755 | if (filesfrom_fd >= 0) { |
756 | io_set_filesfrom_fds(filesfrom_fd, f_out); | |
757 | filesfrom_fd = -1; | |
758 | } | |
759 | ||
b9f592fb WD |
760 | if (write_batch) |
761 | start_write_batch(f_in); | |
9486289c AT |
762 | flist = recv_file_list(f_in); |
763 | if (!flist || flist->count == 0) { | |
796d484b | 764 | rprintf(FINFO, "client: nothing to do: " |
d9c7edf6 WD |
765 | "perhaps you need to specify some filenames or " |
766 | "the --recursive option?\n"); | |
9486289c AT |
767 | exit_cleanup(0); |
768 | } | |
d9c7edf6 | 769 | |
9486289c | 770 | local_name = get_local_name(flist,argv[0]); |
d9c7edf6 | 771 | |
9486289c | 772 | status2 = do_recv(f_in,f_out,flist,local_name); |
d9c7edf6 | 773 | |
9486289c | 774 | if (pid != -1) { |
8d9dc9f9 | 775 | if (verbose > 3) |
08a740ff | 776 | rprintf(FINFO,"client_run2 waiting on %d\n", (int) pid); |
f1e3656e | 777 | io_flush(FULL_FLUSH); |
d79d1c69 | 778 | wait_process(pid, &status); |
9486289c | 779 | } |
d9c7edf6 | 780 | |
ff81e809 | 781 | return MAX(status, status2); |
9486289c AT |
782 | } |
783 | ||
7169bb4a MP |
784 | static int copy_argv (char *argv[]) |
785 | { | |
786 | int i; | |
787 | ||
788 | for (i = 0; argv[i]; i++) { | |
789 | if (!(argv[i] = strdup(argv[i]))) { | |
790 | rprintf (FERROR, "out of memory at %s(%d)\n", | |
791 | __FILE__, __LINE__); | |
792 | return RERR_MALLOC; | |
793 | } | |
794 | } | |
795 | ||
796 | return 0; | |
797 | } | |
798 | ||
799 | ||
c1a04ecb | 800 | /** |
0ba48136 MP |
801 | * Start a client for either type of remote connection. Work out |
802 | * whether the arguments request a remote shell or rsyncd connection, | |
803 | * and call the appropriate connection function, then run_client. | |
0b4af330 MP |
804 | * |
805 | * Calls either start_socket_client (for sockets) or do_cmd and | |
806 | * client_run (for ssh). | |
c1a04ecb | 807 | **/ |
fc8a6b97 | 808 | static int start_client(int argc, char *argv[]) |
5d6bcd44 AT |
809 | { |
810 | char *p; | |
811 | char *shell_machine = NULL; | |
812 | char *shell_path = NULL; | |
813 | char *shell_user = NULL; | |
19b27a48 AT |
814 | int ret; |
815 | pid_t pid; | |
5d6bcd44 | 816 | int f_in,f_out; |
7169bb4a MP |
817 | int rc; |
818 | ||
819 | /* Don't clobber argv[] so that ps(1) can still show the right | |
d9c7edf6 | 820 | * command line. */ |
75aeac44 | 821 | if ((rc = copy_argv(argv))) |
7169bb4a | 822 | return rc; |
5d6bcd44 | 823 | |
75aeac44 | 824 | /* rsync:// always uses rsync server over direct socket connection */ |
b9f592fb WD |
825 | if (strncasecmp(URL_PREFIX, argv[0], strlen(URL_PREFIX)) == 0 |
826 | && !read_batch) { | |
f7632fc6 AT |
827 | char *host, *path; |
828 | ||
7169bb4a | 829 | host = argv[0] + strlen(URL_PREFIX); |
f7632fc6 AT |
830 | p = strchr(host,'/'); |
831 | if (p) { | |
50b31539 | 832 | *p = '\0'; |
f7632fc6 | 833 | path = p+1; |
50b31539 | 834 | } else |
a125c82a | 835 | path = ""; |
50b31539 WD |
836 | if (*host == '[' && (p = strchr(host, ']')) != NULL) { |
837 | host++; | |
838 | *p++ = '\0'; | |
839 | if (*p != ':') | |
840 | p = NULL; | |
841 | } else | |
842 | p = strchr(host, ':'); | |
2acf81eb DD |
843 | if (p) { |
844 | rsync_port = atoi(p+1); | |
50b31539 | 845 | *p = '\0'; |
cf510ad2 | 846 | } |
f7632fc6 AT |
847 | return start_socket_client(host, path, argc-1, argv+1); |
848 | } | |
849 | ||
d16c245f | 850 | if (!read_batch) { /* for read_batch, NO source is specified */ |
a125c82a | 851 | p = find_colon(argv[0]); |
d16c245f | 852 | if (p) { /* source is remote */ |
7c2a9e76 WD |
853 | if (remote_filesfrom_file |
854 | && remote_filesfrom_file != files_from + 1 | |
855 | && strncmp(files_from, argv[0], p-argv[0]+1) != 0) { | |
856 | rprintf(FERROR, | |
50b31539 | 857 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
858 | exit_cleanup(RERR_SYNTAX); |
859 | } | |
d9c7edf6 WD |
860 | if (p[1] == ':') { /* double colon */ |
861 | *p = 0; | |
862 | if (!shell_cmd) { | |
863 | return start_socket_client(argv[0], p+2, | |
864 | argc-1, argv+1); | |
865 | } | |
866 | p++; | |
867 | daemon_over_rsh = 1; | |
75aeac44 | 868 | } |
3591c066 | 869 | |
d16c245f | 870 | if (argc < 1) { /* destination required */ |
d9c7edf6 WD |
871 | usage(FERROR); |
872 | exit_cleanup(RERR_SYNTAX); | |
873 | } | |
a125c82a | 874 | |
d9c7edf6 WD |
875 | am_sender = 0; |
876 | *p = 0; | |
877 | shell_machine = argv[0]; | |
878 | shell_path = p+1; | |
d9c7edf6 | 879 | argv++; |
d16c245f | 880 | } else { /* source is local */ |
d9c7edf6 WD |
881 | am_sender = 1; |
882 | ||
883 | /* rsync:// destination uses rsync server over direct socket */ | |
884 | if (strncasecmp(URL_PREFIX, argv[argc-1], strlen(URL_PREFIX)) == 0) { | |
885 | char *host, *path; | |
886 | ||
887 | host = argv[argc-1] + strlen(URL_PREFIX); | |
888 | p = strchr(host,'/'); | |
889 | if (p) { | |
50b31539 | 890 | *p = '\0'; |
d9c7edf6 | 891 | path = p+1; |
50b31539 | 892 | } else |
d9c7edf6 | 893 | path = ""; |
50b31539 WD |
894 | if (*host == '[' && (p = strchr(host, ']')) != NULL) { |
895 | host++; | |
896 | *p++ = '\0'; | |
897 | if (*p != ':') | |
898 | p = NULL; | |
899 | } else | |
900 | p = strchr(host, ':'); | |
d9c7edf6 WD |
901 | if (p) { |
902 | rsync_port = atoi(p+1); | |
50b31539 | 903 | *p = '\0'; |
cf510ad2 | 904 | } |
d9c7edf6 | 905 | return start_socket_client(host, path, argc-1, argv); |
a125c82a | 906 | } |
d9c7edf6 | 907 | |
d16c245f | 908 | p = find_colon(argv[argc-1]); /* look in dest arg */ |
7c2a9e76 WD |
909 | if (p && remote_filesfrom_file |
910 | && remote_filesfrom_file != files_from + 1 | |
911 | && strncmp(files_from, argv[argc-1], p-argv[argc-1]+1) != 0) { | |
912 | rprintf(FERROR, | |
50b31539 | 913 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
914 | exit_cleanup(RERR_SYNTAX); |
915 | } | |
d16c245f | 916 | if (!p) { /* no colon found, so src & dest are local */ |
d9c7edf6 | 917 | local_server = 1; |
7c2a9e76 WD |
918 | if (remote_filesfrom_file) { |
919 | rprintf(FERROR, | |
50b31539 | 920 | "--files-from cannot be remote when the transfer is local\n"); |
7c2a9e76 WD |
921 | exit_cleanup(RERR_SYNTAX); |
922 | } | |
d9c7edf6 | 923 | } else if (p[1] == ':') { /* double colon */ |
a125c82a | 924 | *p = 0; |
d9c7edf6 WD |
925 | if (!shell_cmd) { |
926 | return start_socket_client(argv[argc-1], p+2, | |
927 | argc-1, argv); | |
928 | } | |
929 | p++; | |
930 | daemon_over_rsh = 1; | |
a125c82a | 931 | } |
a125c82a | 932 | |
d9c7edf6 WD |
933 | if (argc < 2) { |
934 | usage(FERROR); | |
935 | exit_cleanup(RERR_SYNTAX); | |
75aeac44 | 936 | } |
3591c066 | 937 | |
d9c7edf6 WD |
938 | if (local_server) { |
939 | shell_machine = NULL; | |
940 | shell_path = argv[argc-1]; | |
941 | } else { | |
942 | *p = 0; | |
943 | shell_machine = argv[argc-1]; | |
944 | shell_path = p+1; | |
945 | } | |
5d6bcd44 | 946 | } |
d16c245f WD |
947 | argc--; |
948 | } else { /* read_batch */ | |
d9c7edf6 WD |
949 | local_server = 1; |
950 | shell_path = argv[argc-1]; | |
b9f592fb WD |
951 | if (find_colon(shell_path)) { |
952 | rprintf(FERROR, "remote destination is not allowed with --read-batch\n"); | |
953 | exit_cleanup(RERR_SYNTAX); | |
954 | } | |
6902ed17 MP |
955 | } |
956 | ||
5d6bcd44 | 957 | if (shell_machine) { |
6fc048f4 | 958 | p = strrchr(shell_machine,'@'); |
5d6bcd44 AT |
959 | if (p) { |
960 | *p = 0; | |
961 | shell_user = shell_machine; | |
962 | shell_machine = p+1; | |
963 | } | |
964 | } | |
965 | ||
966 | if (verbose > 3) { | |
9486289c | 967 | rprintf(FINFO,"cmd=%s machine=%s user=%s path=%s\n", |
71903f60 WD |
968 | shell_cmd ? safe_fname(shell_cmd) : "", |
969 | shell_machine ? safe_fname(shell_machine) : "", | |
970 | shell_user ? safe_fname(shell_user) : "", | |
971 | shell_path ? safe_fname(shell_path) : ""); | |
5d6bcd44 | 972 | } |
d9c7edf6 | 973 | |
d16c245f | 974 | /* for remote source, only single dest arg can remain ... */ |
f7632fc6 | 975 | if (!am_sender && argc > 1) { |
5d6bcd44 | 976 | usage(FERROR); |
65417579 | 977 | exit_cleanup(RERR_SYNTAX); |
5d6bcd44 | 978 | } |
27e3e9c9 | 979 | |
d16c245f | 980 | /* ... or no dest at all */ |
48a1ff0d WD |
981 | if (!am_sender && argc == 0) |
982 | list_only |= 1; | |
d9c7edf6 | 983 | |
75aeac44 WD |
984 | pid = do_cmd(shell_cmd,shell_machine,shell_user,shell_path, |
985 | &f_in,&f_out); | |
986 | ||
987 | /* if we're running an rsync server on the remote host over a | |
9af87151 | 988 | * remote shell command, we need to do the RSYNCD protocol first */ |
75aeac44 WD |
989 | if (daemon_over_rsh) { |
990 | int tmpret; | |
991 | tmpret = start_inband_exchange(shell_user, shell_path, | |
992 | f_in, f_out, argc); | |
993 | if (tmpret < 0) | |
994 | return tmpret; | |
995 | } | |
996 | ||
fc8a6b97 AT |
997 | ret = client_run(f_in, f_out, pid, argc, argv); |
998 | ||
999 | fflush(stdout); | |
1000 | fflush(stderr); | |
1001 | ||
1002 | return ret; | |
5d6bcd44 AT |
1003 | } |
1004 | ||
366345fe | 1005 | |
067669da WD |
1006 | static RETSIGTYPE sigusr1_handler(UNUSED(int val)) |
1007 | { | |
65417579 | 1008 | exit_cleanup(RERR_SIGNAL); |
82306bf6 AT |
1009 | } |
1010 | ||
067669da WD |
1011 | static RETSIGTYPE sigusr2_handler(UNUSED(int val)) |
1012 | { | |
19b27a48 | 1013 | if (log_got_error) _exit(RERR_PARTIAL); |
8b35435f AT |
1014 | _exit(0); |
1015 | } | |
1016 | ||
067669da WD |
1017 | static RETSIGTYPE sigchld_handler(UNUSED(int val)) |
1018 | { | |
029c1713 | 1019 | #ifdef WNOHANG |
ee7118a8 DD |
1020 | int cnt, status; |
1021 | pid_t pid; | |
1022 | /* An empty waitpid() loop was put here by Tridge and we could never | |
d9c7edf6 | 1023 | * get him to explain why he put it in, so rather than taking it |
ee7118a8 DD |
1024 | * out we're instead saving the child exit statuses for later use. |
1025 | * The waitpid() loop presumably eliminates all possibility of leaving | |
1026 | * zombie children, maybe that's why he did it. | |
1027 | */ | |
1028 | while ((pid = waitpid(-1, &status, WNOHANG)) > 0) { | |
9af87151 WD |
1029 | /* save the child's exit status */ |
1030 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { | |
1031 | if (pid_stat_table[cnt].pid == 0) { | |
1032 | pid_stat_table[cnt].pid = pid; | |
1033 | pid_stat_table[cnt].status = status; | |
1034 | break; | |
1035 | } | |
1036 | } | |
ee7118a8 | 1037 | } |
029c1713 | 1038 | #endif |
19b27a48 AT |
1039 | } |
1040 | ||
c0531332 MP |
1041 | |
1042 | /** | |
1043 | * This routine catches signals and tries to send them to gdb. | |
1044 | * | |
1045 | * Because it's called from inside a signal handler it ought not to | |
1046 | * use too many library routines. | |
1047 | * | |
1048 | * @todo Perhaps use "screen -X" instead/as well, to help people | |
1049 | * debugging without easy access to X. Perhaps use an environment | |
1050 | * variable, or just call a script? | |
1051 | * | |
1052 | * @todo The /proc/ magic probably only works on Linux (and | |
1053 | * Solaris?) Can we be more portable? | |
1054 | **/ | |
1055 | #ifdef MAINTAINER_MODE | |
4fdc39dd MP |
1056 | const char *get_panic_action(void) |
1057 | { | |
1058 | const char *cmd_fmt = getenv("RSYNC_PANIC_ACTION"); | |
1059 | ||
1060 | if (cmd_fmt) | |
1061 | return cmd_fmt; | |
1062 | else | |
1063 | return "xterm -display :0 -T Panic -n Panic " | |
1064 | "-e gdb /proc/%d/exe %d"; | |
1065 | } | |
1066 | ||
1067 | ||
9fb3f7a9 MP |
1068 | /** |
1069 | * Handle a fatal signal by launching a debugger, controlled by $RSYNC_PANIC_ACTION. | |
1070 | * | |
1071 | * This signal handler is only installed if we were configured with | |
1072 | * --enable-maintainer-mode. Perhaps it should always be on and we | |
1073 | * should just look at the environment variable, but I'm a bit leery | |
1074 | * of a signal sending us into a busy loop. | |
1075 | **/ | |
067669da | 1076 | static RETSIGTYPE rsync_panic_handler(UNUSED(int whatsig)) |
c0531332 MP |
1077 | { |
1078 | char cmd_buf[300]; | |
1079 | int ret; | |
4fdc39dd MP |
1080 | |
1081 | sprintf(cmd_buf, get_panic_action(), | |
c0531332 MP |
1082 | getpid(), getpid()); |
1083 | ||
1084 | /* Unless we failed to execute gdb, we allow the process to | |
1085 | * continue. I'm not sure if that's right. */ | |
1086 | ret = system(cmd_buf); | |
1087 | if (ret) | |
1088 | _exit(ret); | |
1089 | } | |
1090 | #endif | |
1091 | ||
1092 | ||
5d6bcd44 | 1093 | int main(int argc,char *argv[]) |
d9c7edf6 | 1094 | { |
ff81e809 | 1095 | int ret; |
66a9dc96 WD |
1096 | int orig_argc = argc; |
1097 | char **orig_argv = argv; | |
5d6bcd44 | 1098 | |
7a6421fa | 1099 | signal(SIGUSR1, sigusr1_handler); |
8b35435f | 1100 | signal(SIGUSR2, sigusr2_handler); |
19b27a48 | 1101 | signal(SIGCHLD, sigchld_handler); |
c0531332 MP |
1102 | #ifdef MAINTAINER_MODE |
1103 | signal(SIGSEGV, rsync_panic_handler); | |
1104 | signal(SIGFPE, rsync_panic_handler); | |
1105 | signal(SIGABRT, rsync_panic_handler); | |
1106 | signal(SIGBUS, rsync_panic_handler); | |
1107 | #endif /* def MAINTAINER_MODE */ | |
5d6bcd44 | 1108 | |
7a6421fa | 1109 | starttime = time(NULL); |
6fe05820 | 1110 | am_root = (MY_UID() == 0); |
c627d613 | 1111 | |
a800434a AT |
1112 | memset(&stats, 0, sizeof(stats)); |
1113 | ||
df5e03da AT |
1114 | if (argc < 2) { |
1115 | usage(FERROR); | |
65417579 | 1116 | exit_cleanup(RERR_SYNTAX); |
df5e03da AT |
1117 | } |
1118 | ||
7a6421fa | 1119 | /* we set a 0 umask so that correct file permissions can be |
9af87151 | 1120 | * carried across */ |
7a6421fa | 1121 | orig_umask = (int)umask(0); |
5d6bcd44 | 1122 | |
50135767 | 1123 | if (!parse_arguments(&argc, (const char ***) &argv, 1)) { |
d9c7edf6 WD |
1124 | /* FIXME: We ought to call the same error-handling |
1125 | * code here, rather than relying on getopt. */ | |
50135767 | 1126 | option_error(); |
65417579 | 1127 | exit_cleanup(RERR_SYNTAX); |
b11ed3b1 | 1128 | } |
5d6bcd44 | 1129 | |
7a6421fa | 1130 | signal(SIGINT,SIGNAL_CAST sig_int); |
7a6421fa | 1131 | signal(SIGHUP,SIGNAL_CAST sig_int); |
8638dd48 | 1132 | signal(SIGTERM,SIGNAL_CAST sig_int); |
6b83141d | 1133 | |
34758d5c MP |
1134 | /* Ignore SIGPIPE; we consistently check error codes and will |
1135 | * see the EPIPE. */ | |
1136 | signal(SIGPIPE, SIG_IGN); | |
1137 | ||
c226b7c2 | 1138 | /* Initialize push_dir here because on some old systems getcwd |
9af87151 WD |
1139 | * (implemented by forking "pwd" and reading its output) doesn't |
1140 | * work when there are other child processes. Also, on all systems | |
1141 | * that implement getcwd that way "pwd" can't be found after chroot. */ | |
59187666 | 1142 | push_dir(NULL); |
c226b7c2 | 1143 | |
44e9e221 WD |
1144 | init_flist(); |
1145 | ||
b9f592fb WD |
1146 | if (write_batch || read_batch) { |
1147 | if (write_batch) | |
66a9dc96 | 1148 | write_batch_shell_file(orig_argc, orig_argv, argc); |
b9f592fb | 1149 | |
dbbab0c4 WD |
1150 | if (read_batch && strcmp(batch_name, "-") == 0) |
1151 | batch_fd = STDIN_FILENO; | |
1152 | else { | |
1153 | batch_fd = do_open(batch_name, | |
b9f592fb WD |
1154 | write_batch ? O_WRONLY | O_CREAT | O_TRUNC |
1155 | : O_RDONLY, S_IRUSR | S_IWUSR); | |
dbbab0c4 | 1156 | } |
b9f592fb WD |
1157 | if (batch_fd < 0) { |
1158 | rsyserr(FERROR, errno, "Batch file %s open error", | |
71903f60 | 1159 | full_fname(batch_name)); |
b9f592fb WD |
1160 | exit_cleanup(RERR_FILEIO); |
1161 | } | |
9459290a WD |
1162 | if (read_batch) |
1163 | read_stream_flags(batch_fd); | |
6902ed17 MP |
1164 | } |
1165 | ||
75aeac44 | 1166 | if (am_daemon && !am_server) |
7a6421fa | 1167 | return daemon_main(); |
f0fca04e | 1168 | |
08ac228f AT |
1169 | if (argc < 1) { |
1170 | usage(FERROR); | |
65417579 | 1171 | exit_cleanup(RERR_SYNTAX); |
08ac228f AT |
1172 | } |
1173 | ||
7a6421fa AT |
1174 | if (dry_run) |
1175 | verbose = MAX(verbose,1); | |
c627d613 | 1176 | |
7a6421fa | 1177 | if (am_server) { |
f0359dd0 AT |
1178 | set_nonblocking(STDIN_FILENO); |
1179 | set_nonblocking(STDOUT_FILENO); | |
75aeac44 WD |
1180 | if (am_daemon) |
1181 | return start_daemon(STDIN_FILENO, STDOUT_FILENO); | |
7a6421fa AT |
1182 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); |
1183 | } | |
c627d613 | 1184 | |
ff81e809 | 1185 | ret = start_client(argc, argv); |
d9c7edf6 | 1186 | if (ret == -1) |
9098bbf3 | 1187 | exit_cleanup(RERR_STARTCLIENT); |
088aac85 | 1188 | else |
9098bbf3 MP |
1189 | exit_cleanup(ret); |
1190 | ||
0f5a04e3 | 1191 | return ret; |
c627d613 | 1192 | } |