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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 WD |
33 | extern int blocking_io; |
34 | extern int cvs_exclude; | |
35 | extern int delete_mode; | |
48a1ff0d | 36 | extern int delete_before; |
32eda096 | 37 | extern int delete_after; |
48a1ff0d | 38 | extern int delete_excluded; |
32eda096 WD |
39 | extern int daemon_over_rsh; |
40 | extern int do_stats; | |
41 | extern int dry_run; | |
42 | extern int list_only; | |
43 | extern int local_server; | |
44 | extern int log_got_error; | |
45 | extern int module_id; | |
46 | extern int orig_umask; | |
bb6721dc | 47 | extern int copy_links; |
83926d3c | 48 | extern int keep_dirlinks; |
32eda096 | 49 | extern int preserve_hard_links; |
d04e9c51 | 50 | extern int protocol_version; |
32eda096 WD |
51 | extern int recurse; |
52 | extern int relative_paths; | |
53 | extern int rsync_port; | |
b1df18d7 | 54 | extern int whole_file; |
32eda096 WD |
55 | extern int read_batch; |
56 | extern int write_batch; | |
b9f592fb | 57 | extern int batch_fd; |
c0d8e84c | 58 | extern int batch_gen_fd; |
32eda096 WD |
59 | extern int filesfrom_fd; |
60 | extern pid_t cleanup_child_pid; | |
61 | extern char *files_from; | |
62 | extern char *remote_filesfrom_file; | |
7162c65d | 63 | extern char *partial_dir; |
c3fad2e2 | 64 | extern char *basis_dir[]; |
32eda096 WD |
65 | extern char *rsync_path; |
66 | extern char *shell_cmd; | |
9b3318b0 | 67 | extern char *batch_name; |
91c5833b | 68 | extern struct filter_list_struct filter_list; |
c627d613 | 69 | |
91c5833b WD |
70 | /* There's probably never more than at most 2 outstanding child processes, |
71 | * but set it higher, just in case. */ | |
ee7118a8 DD |
72 | #define MAXCHILDPROCS 5 |
73 | ||
74 | struct pid_status { | |
75 | pid_t pid; | |
76 | int status; | |
77 | } pid_stat_table[MAXCHILDPROCS]; | |
78 | ||
e5a2b854 | 79 | static void show_malloc_stats(void); |
82980a23 AT |
80 | |
81 | /**************************************************************************** | |
82 | wait for a process to exit, calling io_flush while waiting | |
83 | ****************************************************************************/ | |
84 | void wait_process(pid_t pid, int *status) | |
85 | { | |
ee7118a8 DD |
86 | pid_t waited_pid; |
87 | int cnt; | |
88 | ||
89 | while ((waited_pid = waitpid(pid, status, WNOHANG)) == 0) { | |
a24c6870 | 90 | msleep(20); |
f1e3656e | 91 | io_flush(FULL_FLUSH); |
82980a23 | 92 | } |
d9c7edf6 | 93 | |
6fb812f7 | 94 | if (waited_pid == -1 && errno == ECHILD) { |
ee7118a8 DD |
95 | /* status of requested child no longer available. |
96 | * check to see if it was processed by the sigchld_handler. | |
97 | */ | |
98 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { | |
99 | if (pid == pid_stat_table[cnt].pid) { | |
100 | *status = pid_stat_table[cnt].status; | |
101 | pid_stat_table[cnt].pid = 0; | |
102 | break; | |
103 | } | |
104 | } | |
105 | } | |
106 | ||
d9c7edf6 WD |
107 | /* TODO: If the child exited on a signal, then log an |
108 | * appropriate error message. Perhaps we should also accept a | |
109 | * message describing the purpose of the child. Also indicate | |
110 | * this to the caller so that thhey know something went | |
111 | * wrong. */ | |
82980a23 AT |
112 | *status = WEXITSTATUS(*status); |
113 | } | |
114 | ||
b9f592fb WD |
115 | /* This function gets called from all 3 processes. We want the client side |
116 | * to actually output the text, but the sender is the only process that has | |
117 | * all the stats we need. So, if we're a client sender, we do the report. | |
118 | * If we're a server sender, we write the stats on the supplied fd. If | |
119 | * we're the client receiver we read the stats from the supplied fd and do | |
120 | * the report. All processes might also generate a set of debug stats, if | |
121 | * the verbose level is high enough (this is the only thing that the | |
122 | * generator process and the server receiver ever do here). */ | |
c627d613 AT |
123 | static void report(int f) |
124 | { | |
b9f592fb WD |
125 | /* Cache two stats because the read/write code can change it. */ |
126 | int64 total_read = stats.total_read; | |
127 | int64 total_written = stats.total_written; | |
7a6421fa | 128 | time_t t = time(NULL); |
7a6421fa | 129 | |
7bb7058e | 130 | if (do_stats && verbose > 1) { |
5c15e29f | 131 | /* These come out from every process */ |
7bb7058e | 132 | show_malloc_stats(); |
86943126 | 133 | show_flist_stats(); |
5c15e29f MP |
134 | } |
135 | ||
e5fbaa71 S |
136 | if (am_generator) |
137 | return; | |
138 | ||
248fbb8c | 139 | if (am_daemon) { |
a9766ef1 | 140 | log_exit(0, __FILE__, __LINE__); |
83926d3c WD |
141 | if (f == -1 || !am_sender) |
142 | return; | |
248fbb8c AT |
143 | } |
144 | ||
e19452a9 | 145 | if (am_server) { |
3e491682 | 146 | if (am_sender) { |
b9f592fb WD |
147 | write_longint(f, total_read); |
148 | write_longint(f, total_written); | |
149 | write_longint(f, stats.total_size); | |
f0f7e760 WD |
150 | if (protocol_version >= 29) { |
151 | write_longint(f, stats.flist_buildtime); | |
152 | write_longint(f, stats.flist_xfertime); | |
153 | } | |
e19452a9 | 154 | } |
7a6421fa AT |
155 | return; |
156 | } | |
e19452a9 DD |
157 | |
158 | /* this is the client */ | |
d9c7edf6 | 159 | |
3e491682 | 160 | if (!am_sender) { |
58c5c245 WD |
161 | /* Read the first two in opposite order because the meaning of |
162 | * read/write swaps when switching from sender to receiver. */ | |
b9f592fb WD |
163 | total_written = read_longint(f); |
164 | total_read = read_longint(f); | |
a800434a | 165 | stats.total_size = read_longint(f); |
f0f7e760 WD |
166 | if (protocol_version >= 29) { |
167 | stats.flist_buildtime = read_longint(f); | |
168 | stats.flist_xfertime = read_longint(f); | |
169 | } | |
b9f592fb WD |
170 | } else if (write_batch) { |
171 | /* The --read-batch process is going to be a client | |
172 | * receiver, so we need to give it the stats. */ | |
173 | write_longint(batch_fd, total_read); | |
174 | write_longint(batch_fd, total_written); | |
175 | write_longint(batch_fd, stats.total_size); | |
f0f7e760 WD |
176 | if (protocol_version >= 29) { |
177 | write_longint(batch_fd, stats.flist_buildtime); | |
178 | write_longint(batch_fd, stats.flist_xfertime); | |
179 | } | |
a800434a AT |
180 | } |
181 | ||
182 | if (do_stats) { | |
1f658d42 | 183 | rprintf(FINFO,"\nNumber of files: %d\n", stats.num_files); |
d9c7edf6 WD |
184 | rprintf(FINFO,"Number of files transferred: %d\n", |
185 | stats.num_transferred_files); | |
186 | rprintf(FINFO,"Total file size: %.0f bytes\n", | |
187 | (double)stats.total_size); | |
188 | rprintf(FINFO,"Total transferred file size: %.0f bytes\n", | |
189 | (double)stats.total_transferred_size); | |
190 | rprintf(FINFO,"Literal data: %.0f bytes\n", | |
191 | (double)stats.literal_data); | |
192 | rprintf(FINFO,"Matched data: %.0f bytes\n", | |
193 | (double)stats.matched_data); | |
1f658d42 | 194 | rprintf(FINFO,"File list size: %d\n", stats.flist_size); |
f0f7e760 WD |
195 | if (stats.flist_buildtime) { |
196 | rprintf(FINFO, | |
197 | "File list generation time: %.3f seconds\n", | |
198 | (double)stats.flist_buildtime / 1000); | |
199 | rprintf(FINFO, | |
200 | "File list transfer time: %.3f seconds\n", | |
201 | (double)stats.flist_xfertime / 1000); | |
202 | } | |
4de2a174 | 203 | rprintf(FINFO,"Total bytes sent: %.0f\n", |
b9f592fb | 204 | (double)total_written); |
4de2a174 | 205 | rprintf(FINFO,"Total bytes received: %.0f\n", |
b9f592fb | 206 | (double)total_read); |
7a6421fa | 207 | } |
d9c7edf6 | 208 | |
e19452a9 | 209 | if (verbose || do_stats) { |
b9f592fb | 210 | rprintf(FINFO, |
4de2a174 | 211 | "\nsent %.0f bytes received %.0f bytes %.2f bytes/sec\n", |
b9f592fb WD |
212 | (double)total_written, (double)total_read, |
213 | (total_written + total_read)/(0.5 + (t - starttime))); | |
214 | rprintf(FINFO, "total size is %.0f speedup is %.2f\n", | |
d9c7edf6 | 215 | (double)stats.total_size, |
b9f592fb | 216 | (double)stats.total_size / (total_written+total_read)); |
e19452a9 | 217 | } |
fc8a6b97 AT |
218 | |
219 | fflush(stdout); | |
220 | fflush(stderr); | |
c627d613 AT |
221 | } |
222 | ||
223 | ||
e5a2b854 MP |
224 | /** |
225 | * If our C library can get malloc statistics, then show them to FINFO | |
226 | **/ | |
227 | static void show_malloc_stats(void) | |
228 | { | |
25ff0441 | 229 | #if HAVE_MALLINFO |
e5a2b854 MP |
230 | struct mallinfo mi; |
231 | ||
232 | mi = mallinfo(); | |
233 | ||
ce672562 | 234 | rprintf(FINFO, "\n" RSYNC_NAME "[%d] (%s%s%s) heap statistics:\n", |
f846a9bf WD |
235 | getpid(), am_server ? "server " : "", |
236 | am_daemon ? "daemon " : "", who_am_i()); | |
237 | rprintf(FINFO, " arena: %10ld (bytes from sbrk)\n", | |
238 | (long)mi.arena); | |
239 | rprintf(FINFO, " ordblks: %10ld (chunks not in use)\n", | |
240 | (long)mi.ordblks); | |
241 | rprintf(FINFO, " smblks: %10ld\n", | |
242 | (long)mi.smblks); | |
243 | rprintf(FINFO, " hblks: %10ld (chunks from mmap)\n", | |
244 | (long)mi.hblks); | |
245 | rprintf(FINFO, " hblkhd: %10ld (bytes from mmap)\n", | |
246 | (long)mi.hblkhd); | |
247 | rprintf(FINFO, " allmem: %10ld (bytes from sbrk + mmap)\n", | |
248 | (long)mi.arena + mi.hblkhd); | |
249 | rprintf(FINFO, " usmblks: %10ld\n", | |
250 | (long)mi.usmblks); | |
251 | rprintf(FINFO, " fsmblks: %10ld\n", | |
252 | (long)mi.fsmblks); | |
253 | rprintf(FINFO, " uordblks: %10ld (bytes used)\n", | |
254 | (long)mi.uordblks); | |
255 | rprintf(FINFO, " fordblks: %10ld (bytes free)\n", | |
256 | (long)mi.fordblks); | |
257 | rprintf(FINFO, " keepcost: %10ld (bytes in releasable chunk)\n", | |
258 | (long)mi.keepcost); | |
e5a2b854 MP |
259 | #endif /* HAVE_MALLINFO */ |
260 | } | |
261 | ||
262 | ||
0882faa2 | 263 | /* Start the remote shell. cmd may be NULL to use the default. */ |
6c2e5b56 WD |
264 | static pid_t do_cmd(char *cmd, char *machine, char *user, char *path, |
265 | int *f_in, int *f_out) | |
c627d613 | 266 | { |
6c2e5b56 | 267 | int i, argc = 0; |
887e553f | 268 | char *args[MAX_ARGS]; |
19b27a48 | 269 | pid_t ret; |
6c2e5b56 | 270 | char *tok, *dir = NULL; |
bb4aa89c | 271 | int dash_l_set = 0; |
366345fe | 272 | |
088aac85 | 273 | if (!read_batch && !local_server) { |
9af87151 | 274 | char *rsh_env = getenv(RSYNC_RSH_ENV); |
366345fe | 275 | if (!cmd) |
9af87151 | 276 | cmd = rsh_env; |
366345fe AT |
277 | if (!cmd) |
278 | cmd = RSYNC_RSH; | |
279 | cmd = strdup(cmd); | |
d9c7edf6 | 280 | if (!cmd) |
366345fe AT |
281 | goto oom; |
282 | ||
887e553f | 283 | for (tok = strtok(cmd, " "); tok; tok = strtok(NULL, " ")) { |
e7a392c7 WD |
284 | /* Comparison leaves rooms for server_options(). */ |
285 | if (argc >= MAX_ARGS - 100) { | |
286 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
887e553f WD |
287 | exit_cleanup(RERR_SYNTAX); |
288 | } | |
366345fe | 289 | args[argc++] = tok; |
887e553f | 290 | } |
c627d613 | 291 | |
d9c7edf6 | 292 | /* check to see if we've already been given '-l user' in |
9af87151 | 293 | * the remote-shell command */ |
bb4aa89c WD |
294 | for (i = 0; i < argc-1; i++) { |
295 | if (!strcmp(args[i], "-l") && args[i+1][0] != '-') | |
296 | dash_l_set = 1; | |
297 | } | |
298 | ||
7b8356d0 | 299 | #if HAVE_REMSH |
366345fe AT |
300 | /* remsh (on HPUX) takes the arguments the other way around */ |
301 | args[argc++] = machine; | |
bb4aa89c | 302 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
303 | args[argc++] = "-l"; |
304 | args[argc++] = user; | |
305 | } | |
7b8356d0 | 306 | #else |
bb4aa89c | 307 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
308 | args[argc++] = "-l"; |
309 | args[argc++] = user; | |
310 | } | |
311 | args[argc++] = machine; | |
7b8356d0 | 312 | #endif |
c627d613 | 313 | |
366345fe | 314 | args[argc++] = rsync_path; |
c627d613 | 315 | |
9af87151 | 316 | if (blocking_io < 0) { |
90e22f4b WD |
317 | char *cp; |
318 | if ((cp = strrchr(cmd, '/')) != NULL) | |
319 | cp++; | |
320 | else | |
321 | cp = cmd; | |
322 | if (strcmp(cp, "rsh") == 0 || strcmp(cp, "remsh") == 0) | |
323 | blocking_io = 1; | |
66b71163 | 324 | } |
e384bfbd | 325 | |
93689aa5 | 326 | server_options(args,&argc); |
e7a392c7 WD |
327 | |
328 | if (argc >= MAX_ARGS - 2) { | |
329 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
330 | exit_cleanup(RERR_SYNTAX); | |
331 | } | |
366345fe | 332 | } |
c627d613 | 333 | |
366345fe | 334 | args[argc++] = "."; |
76076c4b | 335 | |
d9c7edf6 | 336 | if (!daemon_over_rsh && path && *path) |
366345fe | 337 | args[argc++] = path; |
c627d613 | 338 | |
366345fe | 339 | args[argc] = NULL; |
c627d613 | 340 | |
366345fe | 341 | if (verbose > 3) { |
9486289c | 342 | rprintf(FINFO,"cmd="); |
e7a392c7 | 343 | for (i = 0; i < argc; i++) |
9486289c AT |
344 | rprintf(FINFO,"%s ",args[i]); |
345 | rprintf(FINFO,"\n"); | |
366345fe AT |
346 | } |
347 | ||
c0d8e84c WD |
348 | if (read_batch) { |
349 | int from_gen_pipe[2]; | |
350 | if (fd_pair(from_gen_pipe) < 0) { | |
351 | rsyserr(FERROR, errno, "pipe"); | |
352 | exit_cleanup(RERR_IPC); | |
353 | } | |
354 | batch_gen_fd = from_gen_pipe[0]; | |
355 | *f_out = from_gen_pipe[1]; | |
356 | *f_in = batch_fd; | |
357 | ret = -1; /* no child pid */ | |
358 | } else if (local_server) { | |
b1df18d7 WD |
359 | /* If the user didn't request --[no-]whole-file, force |
360 | * it on, but only if we're not batch processing. */ | |
c0d8e84c | 361 | if (whole_file < 0 && !write_batch) |
b1df18d7 | 362 | whole_file = 1; |
25d34a5c | 363 | ret = local_child(argc, args, f_in, f_out, child_main); |
c0d8e84c | 364 | } else |
366345fe | 365 | ret = piped_child(args,f_in,f_out); |
c627d613 | 366 | |
3a69fad0 WD |
367 | if (dir) |
368 | free(dir); | |
82306bf6 | 369 | |
366345fe | 370 | return ret; |
c627d613 AT |
371 | |
372 | oom: | |
366345fe AT |
373 | out_of_memory("do_cmd"); |
374 | return 0; /* not reached */ | |
c627d613 AT |
375 | } |
376 | ||
377 | ||
c627d613 AT |
378 | static char *get_local_name(struct file_list *flist,char *name) |
379 | { | |
7a6421fa | 380 | STRUCT_STAT st; |
87cc45e1 | 381 | int e; |
c627d613 | 382 | |
c95da96a | 383 | if (verbose > 2) |
d9c7edf6 | 384 | rprintf(FINFO,"get_local_name count=%d %s\n", |
1f0610ef DD |
385 | flist->count, NS(name)); |
386 | ||
d9c7edf6 | 387 | if (!name) |
1f0610ef | 388 | return NULL; |
c95da96a | 389 | |
1ff5450d AT |
390 | if (do_stat(name,&st) == 0) { |
391 | if (S_ISDIR(st.st_mode)) { | |
59187666 | 392 | if (!push_dir(name)) { |
982e05bb WD |
393 | rsyserr(FERROR, errno, "push_dir#1 %s failed", |
394 | full_fname(name)); | |
65417579 | 395 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
396 | } |
397 | return NULL; | |
398 | } | |
399 | if (flist->count > 1) { | |
400 | rprintf(FERROR,"ERROR: destination must be a directory when copying more than 1 file\n"); | |
65417579 | 401 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
402 | } |
403 | return name; | |
404 | } | |
405 | ||
87cc45e1 | 406 | if (flist->count <= 1 && ((e = strlen(name)) <= 1 || name[e-1] != '/')) |
1ff5450d AT |
407 | return name; |
408 | ||
1ff5450d | 409 | if (do_mkdir(name,0777 & ~orig_umask) != 0) { |
982e05bb | 410 | rsyserr(FERROR, errno, "mkdir %s failed", full_fname(name)); |
65417579 | 411 | exit_cleanup(RERR_FILEIO); |
e5a96f0f WD |
412 | } |
413 | if (verbose > 0) | |
414 | rprintf(FINFO, "created directory %s\n", name); | |
415 | ||
416 | if (dry_run) { | |
417 | dry_run++; | |
418 | return NULL; | |
1ff5450d AT |
419 | } |
420 | ||
59187666 | 421 | if (!push_dir(name)) { |
982e05bb WD |
422 | rsyserr(FERROR, errno, "push_dir#2 %s failed", |
423 | full_fname(name)); | |
65417579 | 424 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
425 | } |
426 | ||
427 | return NULL; | |
c627d613 AT |
428 | } |
429 | ||
430 | ||
9486289c | 431 | static void do_server_sender(int f_in, int f_out, int argc,char *argv[]) |
c627d613 | 432 | { |
7a6421fa AT |
433 | int i; |
434 | struct file_list *flist; | |
435 | char *dir = argv[0]; | |
c627d613 | 436 | |
45e08edb WD |
437 | if (verbose > 2) { |
438 | rprintf(FINFO, "server_sender starting pid=%ld\n", | |
439 | (long)getpid()); | |
440 | } | |
d9c7edf6 | 441 | |
2adbcdc7 | 442 | if (am_daemon && lp_write_only(module_id)) { |
7a92ded3 WD |
443 | rprintf(FERROR, "ERROR: module is write only\n"); |
444 | exit_cleanup(RERR_SYNTAX); | |
445 | return; | |
446 | } | |
447 | ||
59187666 | 448 | if (!relative_paths && !push_dir(dir)) { |
982e05bb WD |
449 | rsyserr(FERROR, errno, "push_dir#3 %s failed", |
450 | full_fname(dir)); | |
65417579 | 451 | exit_cleanup(RERR_FILESELECT); |
7a6421fa AT |
452 | } |
453 | argc--; | |
454 | argv++; | |
d9c7edf6 | 455 | |
7a6421fa AT |
456 | if (strcmp(dir,".")) { |
457 | int l = strlen(dir); | |
d9c7edf6 | 458 | if (strcmp(dir,"/") == 0) |
7a6421fa | 459 | l = 0; |
e7a392c7 | 460 | for (i = 0; i < argc; i++) |
7a6421fa AT |
461 | argv[i] += l+1; |
462 | } | |
c627d613 | 463 | |
48a1ff0d | 464 | if (argc == 0 && (recurse || list_only)) { |
e1f67417 | 465 | argc = 1; |
7a6421fa AT |
466 | argv--; |
467 | argv[0] = "."; | |
468 | } | |
d9c7edf6 | 469 | |
7a6421fa | 470 | flist = send_file_list(f_out,argc,argv); |
8d9dc9f9 AT |
471 | if (!flist || flist->count == 0) { |
472 | exit_cleanup(0); | |
473 | } | |
474 | ||
da3478b2 WD |
475 | io_start_buffering_in(); |
476 | io_start_buffering_out(); | |
477 | ||
7a6421fa | 478 | send_files(flist,f_out,f_in); |
f1e3656e | 479 | io_flush(FULL_FLUSH); |
7a6421fa | 480 | report(f_out); |
d04e9c51 | 481 | if (protocol_version >= 24) { |
d9c7edf6 | 482 | /* final goodbye message */ |
64c3523a WD |
483 | read_int(f_in); |
484 | } | |
f1e3656e | 485 | io_flush(FULL_FLUSH); |
7a6421fa | 486 | exit_cleanup(0); |
c627d613 AT |
487 | } |
488 | ||
489 | ||
dc5ddbcc AT |
490 | static int do_recv(int f_in,int f_out,struct file_list *flist,char *local_name) |
491 | { | |
d186eb1a | 492 | int pid; |
e1f67417 | 493 | int status = 0; |
41cfde6b | 494 | int error_pipe[2], name_pipe[2]; |
7162c65d | 495 | BOOL need_name_pipe = (basis_dir[0] || partial_dir) && !dry_run; |
dc5ddbcc | 496 | |
bb6721dc WD |
497 | /* The receiving side mustn't obey this, or an existing symlink that |
498 | * points to an identical file won't be replaced by the referent. */ | |
499 | copy_links = 0; | |
500 | ||
d186eb1a AT |
501 | if (preserve_hard_links) |
502 | init_hard_links(flist); | |
dc5ddbcc | 503 | |
48a1ff0d | 504 | if (delete_before) { |
6957ae33 | 505 | /* I moved this here from recv_files() to prevent a race condition */ |
b98f040e | 506 | if (recurse && !local_name && flist->count > 0) |
6957ae33 | 507 | delete_files(flist); |
6957ae33 AT |
508 | } |
509 | ||
41cfde6b WD |
510 | if (fd_pair(error_pipe) < 0 |
511 | || (need_name_pipe && fd_pair(name_pipe) < 0)) { | |
ab759cd2 | 512 | rsyserr(FERROR, errno, "pipe failed in do_recv"); |
c8f2f857 | 513 | exit_cleanup(RERR_IPC); |
554e0a8d | 514 | } |
d9c7edf6 | 515 | |
f1e3656e | 516 | io_flush(NORMAL_FLUSH); |
c6e7fcb4 | 517 | |
ba449e44 | 518 | if ((pid = do_fork()) == -1) { |
c8f2f857 | 519 | rsyserr(FERROR, errno, "fork failed in do_recv"); |
ba449e44 WD |
520 | exit_cleanup(RERR_IPC); |
521 | } | |
522 | ||
523 | if (pid == 0) { | |
554e0a8d | 524 | close(error_pipe[0]); |
41cfde6b WD |
525 | if (need_name_pipe) { |
526 | close(name_pipe[1]); | |
527 | set_blocking(name_pipe[0]); | |
528 | } else | |
529 | name_pipe[0] = -1; | |
3a69fad0 WD |
530 | if (f_in != f_out) |
531 | close(f_out); | |
e08c9610 | 532 | |
554e0a8d | 533 | /* we can't let two processes write to the socket at one time */ |
9eeb3b9c | 534 | close_multiplexing_out(); |
554e0a8d AT |
535 | |
536 | /* set place to send errors */ | |
f1e3656e | 537 | set_msg_fd_out(error_pipe[1]); |
554e0a8d | 538 | |
41cfde6b | 539 | recv_files(f_in, flist, local_name, name_pipe[0]); |
f1e3656e | 540 | io_flush(FULL_FLUSH); |
ba5e128d | 541 | report(f_in); |
e08c9610 | 542 | |
f1e3656e WD |
543 | send_msg(MSG_DONE, "", 0); |
544 | io_flush(FULL_FLUSH); | |
4a748188 | 545 | /* finally we go to sleep until our parent kills us |
9af87151 WD |
546 | * with a USR2 signal. We sleep for a short time as on |
547 | * some OSes a signal won't interrupt a sleep! */ | |
f1e3656e WD |
548 | while (1) |
549 | msleep(20); | |
d186eb1a | 550 | } |
dc5ddbcc | 551 | |
b695f242 | 552 | am_generator = 1; |
9eeb3b9c | 553 | close_multiplexing_in(); |
b9f592fb WD |
554 | if (write_batch) |
555 | stop_write_batch(); | |
b695f242 | 556 | |
554e0a8d | 557 | close(error_pipe[1]); |
41cfde6b WD |
558 | if (need_name_pipe) { |
559 | close(name_pipe[0]); | |
560 | set_nonblocking(name_pipe[1]); | |
561 | } else | |
562 | name_pipe[1] = -1; | |
3a69fad0 WD |
563 | if (f_in != f_out) |
564 | close(f_in); | |
e1b3d5c4 | 565 | |
da3478b2 | 566 | io_start_buffering_out(); |
b3e10ed7 | 567 | |
f1e3656e | 568 | set_msg_fd_in(error_pipe[0]); |
554e0a8d | 569 | |
41cfde6b | 570 | generate_files(f_out, flist, local_name, name_pipe[1]); |
8d9dc9f9 | 571 | |
e5fbaa71 | 572 | report(-1); |
f1e3656e | 573 | io_flush(FULL_FLUSH); |
d04e9c51 | 574 | if (protocol_version >= 24) { |
8ada7518 AT |
575 | /* send a final goodbye message */ |
576 | write_int(f_out, -1); | |
577 | } | |
f1e3656e | 578 | io_flush(FULL_FLUSH); |
8ada7518 | 579 | |
f1e3656e | 580 | set_msg_fd_in(-1); |
089a2435 | 581 | kill(pid, SIGUSR2); |
d79d1c69 | 582 | wait_process(pid, &status); |
d186eb1a | 583 | return status; |
dc5ddbcc AT |
584 | } |
585 | ||
c627d613 | 586 | |
9486289c | 587 | static void do_server_recv(int f_in, int f_out, int argc,char *argv[]) |
c627d613 | 588 | { |
7a6421fa AT |
589 | int status; |
590 | struct file_list *flist; | |
6c2e5b56 | 591 | char *local_name = NULL; |
7a6421fa | 592 | char *dir = NULL; |
07bff66f WD |
593 | int save_verbose = verbose; |
594 | ||
595 | if (filesfrom_fd >= 0) { | |
596 | /* We can't mix messages with files-from data on the socket, | |
597 | * so temporarily turn off verbose messages. */ | |
598 | verbose = 0; | |
599 | } | |
f0fca04e | 600 | |
45e08edb WD |
601 | if (verbose > 2) { |
602 | rprintf(FINFO, "server_recv(%d) starting pid=%ld\n", | |
603 | argc, (long)getpid()); | |
604 | } | |
09b7f5db | 605 | |
2adbcdc7 | 606 | if (am_daemon && lp_read_only(module_id)) { |
09b7f5db AT |
607 | rprintf(FERROR,"ERROR: module is read only\n"); |
608 | exit_cleanup(RERR_SYNTAX); | |
609 | return; | |
610 | } | |
611 | ||
d9c7edf6 | 612 | |
7a6421fa AT |
613 | if (argc > 0) { |
614 | dir = argv[0]; | |
615 | argc--; | |
616 | argv++; | |
59187666 | 617 | if (!am_daemon && !push_dir(dir)) { |
982e05bb WD |
618 | rsyserr(FERROR, errno, "push_dir#4 %s failed", |
619 | full_fname(dir)); | |
65417579 | 620 | exit_cleanup(RERR_FILESELECT); |
d9c7edf6 | 621 | } |
7a6421fa | 622 | } |
c627d613 | 623 | |
da3478b2 | 624 | io_start_buffering_in(); |
b33b791e | 625 | if (delete_mode && !delete_excluded) |
7842418b | 626 | recv_filter_list(f_in); |
91c5833b WD |
627 | if (cvs_exclude && protocol_version < 29) |
628 | add_filter(&filter_list, ":C", 0); | |
c627d613 | 629 | |
7c2a9e76 | 630 | if (filesfrom_fd >= 0) { |
07bff66f WD |
631 | /* We need to send the files-from names to the sender at the |
632 | * same time that we receive the file-list from them, so we | |
633 | * need the IO routines to automatically write out the names | |
634 | * onto our f_out socket as we read the file-list. This | |
635 | * avoids both deadlock and extra delays/buffers. */ | |
7c2a9e76 WD |
636 | io_set_filesfrom_fds(filesfrom_fd, f_out); |
637 | filesfrom_fd = -1; | |
638 | } | |
639 | ||
b9f592fb | 640 | flist = recv_file_list(f_in); |
07bff66f | 641 | verbose = save_verbose; |
4c36a13e AT |
642 | if (!flist) { |
643 | rprintf(FERROR,"server_recv: recv_file_list error\n"); | |
65417579 | 644 | exit_cleanup(RERR_FILESELECT); |
7a6421fa | 645 | } |
d9c7edf6 WD |
646 | |
647 | if (argc > 0) { | |
7a6421fa AT |
648 | if (strcmp(dir,".")) { |
649 | argv[0] += strlen(dir); | |
3a69fad0 WD |
650 | if (argv[0][0] == '/') |
651 | argv[0]++; | |
7a6421fa AT |
652 | } |
653 | local_name = get_local_name(flist,argv[0]); | |
654 | } | |
c627d613 | 655 | |
7a6421fa AT |
656 | status = do_recv(f_in,f_out,flist,local_name); |
657 | exit_cleanup(status); | |
c627d613 AT |
658 | } |
659 | ||
660 | ||
734a94a2 | 661 | int child_main(int argc, char *argv[]) |
25d34a5c MP |
662 | { |
663 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); | |
734a94a2 | 664 | return 0; |
25d34a5c MP |
665 | } |
666 | ||
667 | ||
9486289c | 668 | void start_server(int f_in, int f_out, int argc, char *argv[]) |
366345fe | 669 | { |
f0359dd0 AT |
670 | set_nonblocking(f_in); |
671 | set_nonblocking(f_out); | |
672 | ||
da3478b2 WD |
673 | io_set_sock_fds(f_in, f_out); |
674 | setup_protocol(f_out, f_in); | |
675 | ||
d04e9c51 | 676 | if (protocol_version >= 23) |
da3478b2 | 677 | io_start_multiplex_out(); |
7a6421fa | 678 | |
7a6421fa | 679 | if (am_sender) { |
83926d3c | 680 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
9b3318b0 | 681 | |
7842418b | 682 | recv_filter_list(f_in); |
b9f592fb WD |
683 | if (cvs_exclude) |
684 | add_cvs_excludes(); | |
7a6421fa AT |
685 | do_server_sender(f_in, f_out, argc, argv); |
686 | } else { | |
687 | do_server_recv(f_in, f_out, argc, argv); | |
688 | } | |
689 | exit_cleanup(0); | |
366345fe AT |
690 | } |
691 | ||
0ba48136 MP |
692 | |
693 | /* | |
694 | * This is called once the connection has been negotiated. It is used | |
695 | * for rsyncd, remote-shell, and local connections. | |
696 | */ | |
19b27a48 | 697 | int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[]) |
9486289c | 698 | { |
088aac85 | 699 | struct file_list *flist = NULL; |
9486289c AT |
700 | int status = 0, status2 = 0; |
701 | char *local_name = NULL; | |
19b27a48 AT |
702 | |
703 | cleanup_child_pid = pid; | |
67a28eb2 | 704 | if (!read_batch) { |
b9f592fb WD |
705 | set_nonblocking(f_in); |
706 | set_nonblocking(f_out); | |
707 | } | |
f0359dd0 | 708 | |
da3478b2 | 709 | io_set_sock_fds(f_in, f_out); |
6d7b6081 AT |
710 | setup_protocol(f_out,f_in); |
711 | ||
b9f592fb | 712 | if (protocol_version >= 23 && !read_batch) |
da3478b2 | 713 | io_start_multiplex_in(); |
d9c7edf6 | 714 | |
18882701 WD |
715 | /* We set our stderr file handle to blocking because ssh might have |
716 | * set it to non-blocking. This can be particularly troublesome if | |
717 | * stderr is a clone of stdout, because ssh would have set our stdout | |
718 | * to non-blocking at the same time (which can easily cause us to lose | |
719 | * output from our print statements). This kluge shouldn't cause ssh | |
720 | * any problems for how we use it. Note also that we delayed setting | |
721 | * this until after the above protocol setup so that we know for sure | |
722 | * that ssh is done twiddling its file descriptors. */ | |
723 | set_blocking(STDERR_FILENO); | |
724 | ||
9486289c | 725 | if (am_sender) { |
83926d3c | 726 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
da3478b2 | 727 | io_start_buffering_out(); |
a0a33ee5 WD |
728 | if (!remote_filesfrom_file) |
729 | set_msg_fd_in(f_in); | |
9486289c AT |
730 | if (cvs_exclude) |
731 | add_cvs_excludes(); | |
d9c7edf6 | 732 | if (delete_mode && !delete_excluded) |
7842418b | 733 | send_filter_list(f_out); |
7c2a9e76 WD |
734 | if (remote_filesfrom_file) |
735 | filesfrom_fd = f_in; | |
b9f592fb WD |
736 | |
737 | if (write_batch) | |
738 | start_write_batch(f_out); | |
64c3523a | 739 | if (!read_batch) /* don't write to pipe */ |
d9c7edf6 | 740 | flist = send_file_list(f_out,argc,argv); |
a0a33ee5 | 741 | set_msg_fd_in(-1); |
d9c7edf6 | 742 | if (verbose > 3) |
9486289c | 743 | rprintf(FINFO,"file list sent\n"); |
e1b3d5c4 | 744 | |
f1e3656e | 745 | io_flush(NORMAL_FLUSH); |
9486289c | 746 | send_files(flist,f_out,f_in); |
f1e3656e | 747 | io_flush(FULL_FLUSH); |
d04e9c51 | 748 | if (protocol_version >= 24) { |
d9c7edf6 | 749 | /* final goodbye message */ |
6c65e146 AT |
750 | read_int(f_in); |
751 | } | |
9486289c AT |
752 | if (pid != -1) { |
753 | if (verbose > 3) | |
08a740ff | 754 | rprintf(FINFO,"client_run waiting on %d\n", (int) pid); |
f1e3656e | 755 | io_flush(FULL_FLUSH); |
d79d1c69 | 756 | wait_process(pid, &status); |
9486289c | 757 | } |
3d382777 | 758 | report(-1); |
f1e3656e | 759 | io_flush(FULL_FLUSH); |
9486289c AT |
760 | exit_cleanup(status); |
761 | } | |
f7632fc6 | 762 | |
48a1ff0d WD |
763 | if (argc == 0) |
764 | list_only |= 1; | |
d9c7edf6 | 765 | |
1082b52b | 766 | if (!read_batch) |
7842418b | 767 | send_filter_list(f_out); |
928a00c4 WD |
768 | if (cvs_exclude) |
769 | add_cvs_excludes(); | |
d9c7edf6 | 770 | |
7c2a9e76 WD |
771 | if (filesfrom_fd >= 0) { |
772 | io_set_filesfrom_fds(filesfrom_fd, f_out); | |
773 | filesfrom_fd = -1; | |
774 | } | |
775 | ||
b9f592fb WD |
776 | if (write_batch) |
777 | start_write_batch(f_in); | |
9486289c AT |
778 | flist = recv_file_list(f_in); |
779 | if (!flist || flist->count == 0) { | |
796d484b | 780 | rprintf(FINFO, "client: nothing to do: " |
d9c7edf6 WD |
781 | "perhaps you need to specify some filenames or " |
782 | "the --recursive option?\n"); | |
9486289c AT |
783 | exit_cleanup(0); |
784 | } | |
d9c7edf6 | 785 | |
9486289c | 786 | local_name = get_local_name(flist,argv[0]); |
d9c7edf6 | 787 | |
9486289c | 788 | status2 = do_recv(f_in,f_out,flist,local_name); |
d9c7edf6 | 789 | |
9486289c | 790 | if (pid != -1) { |
8d9dc9f9 | 791 | if (verbose > 3) |
08a740ff | 792 | rprintf(FINFO,"client_run2 waiting on %d\n", (int) pid); |
f1e3656e | 793 | io_flush(FULL_FLUSH); |
d79d1c69 | 794 | wait_process(pid, &status); |
9486289c | 795 | } |
d9c7edf6 | 796 | |
ff81e809 | 797 | return MAX(status, status2); |
9486289c AT |
798 | } |
799 | ||
7169bb4a MP |
800 | static int copy_argv (char *argv[]) |
801 | { | |
802 | int i; | |
803 | ||
804 | for (i = 0; argv[i]; i++) { | |
805 | if (!(argv[i] = strdup(argv[i]))) { | |
806 | rprintf (FERROR, "out of memory at %s(%d)\n", | |
807 | __FILE__, __LINE__); | |
808 | return RERR_MALLOC; | |
809 | } | |
810 | } | |
811 | ||
812 | return 0; | |
813 | } | |
814 | ||
815 | ||
c1a04ecb | 816 | /** |
0ba48136 MP |
817 | * Start a client for either type of remote connection. Work out |
818 | * whether the arguments request a remote shell or rsyncd connection, | |
819 | * and call the appropriate connection function, then run_client. | |
0b4af330 MP |
820 | * |
821 | * Calls either start_socket_client (for sockets) or do_cmd and | |
822 | * client_run (for ssh). | |
c1a04ecb | 823 | **/ |
fc8a6b97 | 824 | static int start_client(int argc, char *argv[]) |
5d6bcd44 AT |
825 | { |
826 | char *p; | |
827 | char *shell_machine = NULL; | |
828 | char *shell_path = NULL; | |
829 | char *shell_user = NULL; | |
19b27a48 AT |
830 | int ret; |
831 | pid_t pid; | |
5d6bcd44 | 832 | int f_in,f_out; |
7169bb4a MP |
833 | int rc; |
834 | ||
835 | /* Don't clobber argv[] so that ps(1) can still show the right | |
d9c7edf6 | 836 | * command line. */ |
75aeac44 | 837 | if ((rc = copy_argv(argv))) |
7169bb4a | 838 | return rc; |
5d6bcd44 | 839 | |
75aeac44 | 840 | /* rsync:// always uses rsync server over direct socket connection */ |
b9f592fb WD |
841 | if (strncasecmp(URL_PREFIX, argv[0], strlen(URL_PREFIX)) == 0 |
842 | && !read_batch) { | |
f7632fc6 AT |
843 | char *host, *path; |
844 | ||
7169bb4a | 845 | host = argv[0] + strlen(URL_PREFIX); |
f7632fc6 AT |
846 | p = strchr(host,'/'); |
847 | if (p) { | |
50b31539 | 848 | *p = '\0'; |
f7632fc6 | 849 | path = p+1; |
50b31539 | 850 | } else |
a125c82a | 851 | path = ""; |
50b31539 WD |
852 | if (*host == '[' && (p = strchr(host, ']')) != NULL) { |
853 | host++; | |
854 | *p++ = '\0'; | |
855 | if (*p != ':') | |
856 | p = NULL; | |
857 | } else | |
858 | p = strchr(host, ':'); | |
2acf81eb DD |
859 | if (p) { |
860 | rsync_port = atoi(p+1); | |
50b31539 | 861 | *p = '\0'; |
cf510ad2 | 862 | } |
f7632fc6 AT |
863 | return start_socket_client(host, path, argc-1, argv+1); |
864 | } | |
865 | ||
d16c245f | 866 | if (!read_batch) { /* for read_batch, NO source is specified */ |
a125c82a | 867 | p = find_colon(argv[0]); |
d16c245f | 868 | if (p) { /* source is remote */ |
7c2a9e76 WD |
869 | if (remote_filesfrom_file |
870 | && remote_filesfrom_file != files_from + 1 | |
871 | && strncmp(files_from, argv[0], p-argv[0]+1) != 0) { | |
872 | rprintf(FERROR, | |
50b31539 | 873 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
874 | exit_cleanup(RERR_SYNTAX); |
875 | } | |
d9c7edf6 WD |
876 | if (p[1] == ':') { /* double colon */ |
877 | *p = 0; | |
878 | if (!shell_cmd) { | |
879 | return start_socket_client(argv[0], p+2, | |
880 | argc-1, argv+1); | |
881 | } | |
882 | p++; | |
883 | daemon_over_rsh = 1; | |
75aeac44 | 884 | } |
3591c066 | 885 | |
d16c245f | 886 | if (argc < 1) { /* destination required */ |
d9c7edf6 WD |
887 | usage(FERROR); |
888 | exit_cleanup(RERR_SYNTAX); | |
889 | } | |
a125c82a | 890 | |
d9c7edf6 WD |
891 | am_sender = 0; |
892 | *p = 0; | |
893 | shell_machine = argv[0]; | |
894 | shell_path = p+1; | |
d9c7edf6 | 895 | argv++; |
d16c245f | 896 | } else { /* source is local */ |
d9c7edf6 WD |
897 | am_sender = 1; |
898 | ||
899 | /* rsync:// destination uses rsync server over direct socket */ | |
900 | if (strncasecmp(URL_PREFIX, argv[argc-1], strlen(URL_PREFIX)) == 0) { | |
901 | char *host, *path; | |
902 | ||
903 | host = argv[argc-1] + strlen(URL_PREFIX); | |
904 | p = strchr(host,'/'); | |
905 | if (p) { | |
50b31539 | 906 | *p = '\0'; |
d9c7edf6 | 907 | path = p+1; |
50b31539 | 908 | } else |
d9c7edf6 | 909 | path = ""; |
50b31539 WD |
910 | if (*host == '[' && (p = strchr(host, ']')) != NULL) { |
911 | host++; | |
912 | *p++ = '\0'; | |
913 | if (*p != ':') | |
914 | p = NULL; | |
915 | } else | |
916 | p = strchr(host, ':'); | |
d9c7edf6 WD |
917 | if (p) { |
918 | rsync_port = atoi(p+1); | |
50b31539 | 919 | *p = '\0'; |
cf510ad2 | 920 | } |
d9c7edf6 | 921 | return start_socket_client(host, path, argc-1, argv); |
a125c82a | 922 | } |
d9c7edf6 | 923 | |
d16c245f | 924 | p = find_colon(argv[argc-1]); /* look in dest arg */ |
7c2a9e76 WD |
925 | if (p && remote_filesfrom_file |
926 | && remote_filesfrom_file != files_from + 1 | |
927 | && strncmp(files_from, argv[argc-1], p-argv[argc-1]+1) != 0) { | |
928 | rprintf(FERROR, | |
50b31539 | 929 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
930 | exit_cleanup(RERR_SYNTAX); |
931 | } | |
d16c245f | 932 | if (!p) { /* no colon found, so src & dest are local */ |
d9c7edf6 | 933 | local_server = 1; |
7c2a9e76 WD |
934 | if (remote_filesfrom_file) { |
935 | rprintf(FERROR, | |
50b31539 | 936 | "--files-from cannot be remote when the transfer is local\n"); |
7c2a9e76 WD |
937 | exit_cleanup(RERR_SYNTAX); |
938 | } | |
d9c7edf6 | 939 | } else if (p[1] == ':') { /* double colon */ |
a125c82a | 940 | *p = 0; |
d9c7edf6 WD |
941 | if (!shell_cmd) { |
942 | return start_socket_client(argv[argc-1], p+2, | |
943 | argc-1, argv); | |
944 | } | |
945 | p++; | |
946 | daemon_over_rsh = 1; | |
a125c82a | 947 | } |
a125c82a | 948 | |
d9c7edf6 WD |
949 | if (argc < 2) { |
950 | usage(FERROR); | |
951 | exit_cleanup(RERR_SYNTAX); | |
75aeac44 | 952 | } |
3591c066 | 953 | |
d9c7edf6 WD |
954 | if (local_server) { |
955 | shell_machine = NULL; | |
956 | shell_path = argv[argc-1]; | |
957 | } else { | |
958 | *p = 0; | |
959 | shell_machine = argv[argc-1]; | |
960 | shell_path = p+1; | |
961 | } | |
5d6bcd44 | 962 | } |
d16c245f WD |
963 | argc--; |
964 | } else { /* read_batch */ | |
d9c7edf6 WD |
965 | local_server = 1; |
966 | shell_path = argv[argc-1]; | |
b9f592fb WD |
967 | if (find_colon(shell_path)) { |
968 | rprintf(FERROR, "remote destination is not allowed with --read-batch\n"); | |
969 | exit_cleanup(RERR_SYNTAX); | |
970 | } | |
6902ed17 MP |
971 | } |
972 | ||
5d6bcd44 | 973 | if (shell_machine) { |
6fc048f4 | 974 | p = strrchr(shell_machine,'@'); |
5d6bcd44 AT |
975 | if (p) { |
976 | *p = 0; | |
977 | shell_user = shell_machine; | |
978 | shell_machine = p+1; | |
979 | } | |
980 | } | |
981 | ||
982 | if (verbose > 3) { | |
9486289c | 983 | rprintf(FINFO,"cmd=%s machine=%s user=%s path=%s\n", |
5d6bcd44 AT |
984 | shell_cmd?shell_cmd:"", |
985 | shell_machine?shell_machine:"", | |
986 | shell_user?shell_user:"", | |
987 | shell_path?shell_path:""); | |
988 | } | |
d9c7edf6 | 989 | |
d16c245f | 990 | /* for remote source, only single dest arg can remain ... */ |
f7632fc6 | 991 | if (!am_sender && argc > 1) { |
5d6bcd44 | 992 | usage(FERROR); |
65417579 | 993 | exit_cleanup(RERR_SYNTAX); |
5d6bcd44 | 994 | } |
27e3e9c9 | 995 | |
d16c245f | 996 | /* ... or no dest at all */ |
48a1ff0d WD |
997 | if (!am_sender && argc == 0) |
998 | list_only |= 1; | |
d9c7edf6 | 999 | |
75aeac44 WD |
1000 | pid = do_cmd(shell_cmd,shell_machine,shell_user,shell_path, |
1001 | &f_in,&f_out); | |
1002 | ||
1003 | /* if we're running an rsync server on the remote host over a | |
9af87151 | 1004 | * remote shell command, we need to do the RSYNCD protocol first */ |
75aeac44 WD |
1005 | if (daemon_over_rsh) { |
1006 | int tmpret; | |
1007 | tmpret = start_inband_exchange(shell_user, shell_path, | |
1008 | f_in, f_out, argc); | |
1009 | if (tmpret < 0) | |
1010 | return tmpret; | |
1011 | } | |
1012 | ||
fc8a6b97 AT |
1013 | ret = client_run(f_in, f_out, pid, argc, argv); |
1014 | ||
1015 | fflush(stdout); | |
1016 | fflush(stderr); | |
1017 | ||
1018 | return ret; | |
5d6bcd44 AT |
1019 | } |
1020 | ||
366345fe | 1021 | |
067669da WD |
1022 | static RETSIGTYPE sigusr1_handler(UNUSED(int val)) |
1023 | { | |
65417579 | 1024 | exit_cleanup(RERR_SIGNAL); |
82306bf6 AT |
1025 | } |
1026 | ||
067669da WD |
1027 | static RETSIGTYPE sigusr2_handler(UNUSED(int val)) |
1028 | { | |
19b27a48 | 1029 | if (log_got_error) _exit(RERR_PARTIAL); |
8b35435f AT |
1030 | _exit(0); |
1031 | } | |
1032 | ||
067669da WD |
1033 | static RETSIGTYPE sigchld_handler(UNUSED(int val)) |
1034 | { | |
029c1713 | 1035 | #ifdef WNOHANG |
ee7118a8 DD |
1036 | int cnt, status; |
1037 | pid_t pid; | |
1038 | /* An empty waitpid() loop was put here by Tridge and we could never | |
d9c7edf6 | 1039 | * get him to explain why he put it in, so rather than taking it |
ee7118a8 DD |
1040 | * out we're instead saving the child exit statuses for later use. |
1041 | * The waitpid() loop presumably eliminates all possibility of leaving | |
1042 | * zombie children, maybe that's why he did it. | |
1043 | */ | |
1044 | while ((pid = waitpid(-1, &status, WNOHANG)) > 0) { | |
9af87151 WD |
1045 | /* save the child's exit status */ |
1046 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { | |
1047 | if (pid_stat_table[cnt].pid == 0) { | |
1048 | pid_stat_table[cnt].pid = pid; | |
1049 | pid_stat_table[cnt].status = status; | |
1050 | break; | |
1051 | } | |
1052 | } | |
ee7118a8 | 1053 | } |
029c1713 | 1054 | #endif |
19b27a48 AT |
1055 | } |
1056 | ||
c0531332 MP |
1057 | |
1058 | /** | |
1059 | * This routine catches signals and tries to send them to gdb. | |
1060 | * | |
1061 | * Because it's called from inside a signal handler it ought not to | |
1062 | * use too many library routines. | |
1063 | * | |
1064 | * @todo Perhaps use "screen -X" instead/as well, to help people | |
1065 | * debugging without easy access to X. Perhaps use an environment | |
1066 | * variable, or just call a script? | |
1067 | * | |
1068 | * @todo The /proc/ magic probably only works on Linux (and | |
1069 | * Solaris?) Can we be more portable? | |
1070 | **/ | |
1071 | #ifdef MAINTAINER_MODE | |
4fdc39dd MP |
1072 | const char *get_panic_action(void) |
1073 | { | |
1074 | const char *cmd_fmt = getenv("RSYNC_PANIC_ACTION"); | |
1075 | ||
1076 | if (cmd_fmt) | |
1077 | return cmd_fmt; | |
1078 | else | |
1079 | return "xterm -display :0 -T Panic -n Panic " | |
1080 | "-e gdb /proc/%d/exe %d"; | |
1081 | } | |
1082 | ||
1083 | ||
9fb3f7a9 MP |
1084 | /** |
1085 | * Handle a fatal signal by launching a debugger, controlled by $RSYNC_PANIC_ACTION. | |
1086 | * | |
1087 | * This signal handler is only installed if we were configured with | |
1088 | * --enable-maintainer-mode. Perhaps it should always be on and we | |
1089 | * should just look at the environment variable, but I'm a bit leery | |
1090 | * of a signal sending us into a busy loop. | |
1091 | **/ | |
067669da | 1092 | static RETSIGTYPE rsync_panic_handler(UNUSED(int whatsig)) |
c0531332 MP |
1093 | { |
1094 | char cmd_buf[300]; | |
1095 | int ret; | |
4fdc39dd MP |
1096 | |
1097 | sprintf(cmd_buf, get_panic_action(), | |
c0531332 MP |
1098 | getpid(), getpid()); |
1099 | ||
1100 | /* Unless we failed to execute gdb, we allow the process to | |
1101 | * continue. I'm not sure if that's right. */ | |
1102 | ret = system(cmd_buf); | |
1103 | if (ret) | |
1104 | _exit(ret); | |
1105 | } | |
1106 | #endif | |
1107 | ||
1108 | ||
5d6bcd44 | 1109 | int main(int argc,char *argv[]) |
d9c7edf6 | 1110 | { |
ff81e809 | 1111 | int ret; |
66a9dc96 WD |
1112 | int orig_argc = argc; |
1113 | char **orig_argv = argv; | |
5d6bcd44 | 1114 | |
7a6421fa | 1115 | signal(SIGUSR1, sigusr1_handler); |
8b35435f | 1116 | signal(SIGUSR2, sigusr2_handler); |
19b27a48 | 1117 | signal(SIGCHLD, sigchld_handler); |
c0531332 MP |
1118 | #ifdef MAINTAINER_MODE |
1119 | signal(SIGSEGV, rsync_panic_handler); | |
1120 | signal(SIGFPE, rsync_panic_handler); | |
1121 | signal(SIGABRT, rsync_panic_handler); | |
1122 | signal(SIGBUS, rsync_panic_handler); | |
1123 | #endif /* def MAINTAINER_MODE */ | |
5d6bcd44 | 1124 | |
7a6421fa | 1125 | starttime = time(NULL); |
6fe05820 | 1126 | am_root = (MY_UID() == 0); |
c627d613 | 1127 | |
a800434a AT |
1128 | memset(&stats, 0, sizeof(stats)); |
1129 | ||
df5e03da AT |
1130 | if (argc < 2) { |
1131 | usage(FERROR); | |
65417579 | 1132 | exit_cleanup(RERR_SYNTAX); |
df5e03da AT |
1133 | } |
1134 | ||
7a6421fa | 1135 | /* we set a 0 umask so that correct file permissions can be |
9af87151 | 1136 | * carried across */ |
7a6421fa | 1137 | orig_umask = (int)umask(0); |
5d6bcd44 | 1138 | |
50135767 | 1139 | if (!parse_arguments(&argc, (const char ***) &argv, 1)) { |
d9c7edf6 WD |
1140 | /* FIXME: We ought to call the same error-handling |
1141 | * code here, rather than relying on getopt. */ | |
50135767 | 1142 | option_error(); |
65417579 | 1143 | exit_cleanup(RERR_SYNTAX); |
b11ed3b1 | 1144 | } |
5d6bcd44 | 1145 | |
7a6421fa | 1146 | signal(SIGINT,SIGNAL_CAST sig_int); |
7a6421fa | 1147 | signal(SIGHUP,SIGNAL_CAST sig_int); |
8638dd48 | 1148 | signal(SIGTERM,SIGNAL_CAST sig_int); |
6b83141d | 1149 | |
34758d5c MP |
1150 | /* Ignore SIGPIPE; we consistently check error codes and will |
1151 | * see the EPIPE. */ | |
1152 | signal(SIGPIPE, SIG_IGN); | |
1153 | ||
c226b7c2 | 1154 | /* Initialize push_dir here because on some old systems getcwd |
9af87151 WD |
1155 | * (implemented by forking "pwd" and reading its output) doesn't |
1156 | * work when there are other child processes. Also, on all systems | |
1157 | * that implement getcwd that way "pwd" can't be found after chroot. */ | |
59187666 | 1158 | push_dir(NULL); |
c226b7c2 | 1159 | |
44e9e221 WD |
1160 | init_flist(); |
1161 | ||
b9f592fb WD |
1162 | if (write_batch || read_batch) { |
1163 | if (write_batch) | |
66a9dc96 | 1164 | write_batch_shell_file(orig_argc, orig_argv, argc); |
b9f592fb | 1165 | |
dbbab0c4 WD |
1166 | if (read_batch && strcmp(batch_name, "-") == 0) |
1167 | batch_fd = STDIN_FILENO; | |
1168 | else { | |
1169 | batch_fd = do_open(batch_name, | |
b9f592fb WD |
1170 | write_batch ? O_WRONLY | O_CREAT | O_TRUNC |
1171 | : O_RDONLY, S_IRUSR | S_IWUSR); | |
dbbab0c4 | 1172 | } |
b9f592fb WD |
1173 | if (batch_fd < 0) { |
1174 | rsyserr(FERROR, errno, "Batch file %s open error", | |
9b3318b0 | 1175 | batch_name); |
b9f592fb WD |
1176 | exit_cleanup(RERR_FILEIO); |
1177 | } | |
9459290a WD |
1178 | if (read_batch) |
1179 | read_stream_flags(batch_fd); | |
6902ed17 MP |
1180 | } |
1181 | ||
75aeac44 | 1182 | if (am_daemon && !am_server) |
7a6421fa | 1183 | return daemon_main(); |
f0fca04e | 1184 | |
08ac228f AT |
1185 | if (argc < 1) { |
1186 | usage(FERROR); | |
65417579 | 1187 | exit_cleanup(RERR_SYNTAX); |
08ac228f AT |
1188 | } |
1189 | ||
7a6421fa AT |
1190 | if (dry_run) |
1191 | verbose = MAX(verbose,1); | |
c627d613 | 1192 | |
7a6421fa | 1193 | if (am_server) { |
f0359dd0 AT |
1194 | set_nonblocking(STDIN_FILENO); |
1195 | set_nonblocking(STDOUT_FILENO); | |
75aeac44 WD |
1196 | if (am_daemon) |
1197 | return start_daemon(STDIN_FILENO, STDOUT_FILENO); | |
7a6421fa AT |
1198 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); |
1199 | } | |
c627d613 | 1200 | |
ff81e809 | 1201 | ret = start_client(argc, argv); |
d9c7edf6 | 1202 | if (ret == -1) |
9098bbf3 | 1203 | exit_cleanup(RERR_STARTCLIENT); |
088aac85 | 1204 | else |
9098bbf3 MP |
1205 | exit_cleanup(ret); |
1206 | ||
0f5a04e3 | 1207 | return ret; |
c627d613 | 1208 | } |