Commit | Line | Data |
---|---|---|
0f78b815 WD |
1 | /* |
2 | * The startup routines, including main(), for rsync. | |
3 | * | |
4 | * Copyright (C) 1996-2001 Andrew Tridgell <tridge@samba.org> | |
5 | * Copyright (C) 1996 Paul Mackerras | |
6 | * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org> | |
b3bf9b9d | 7 | * Copyright (C) 2003-2009 Wayne Davison |
0f78b815 WD |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
8e41b68e WD |
10 | * it under the terms of the GNU General Public License as published by |
11 | * the Free Software Foundation; either version 3 of the License, or | |
12 | * (at your option) any later version. | |
0f78b815 WD |
13 | * |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
e7c67065 | 19 | * You should have received a copy of the GNU General Public License along |
4fd842f9 | 20 | * with this program; if not, visit the http://fsf.org website. |
0f78b815 | 21 | */ |
c627d613 AT |
22 | |
23 | #include "rsync.h" | |
5dd14f0c | 24 | #include "inums.h" |
a72ba0cf | 25 | #include "io.h" |
d9401514 WD |
26 | #if defined CONFIG_LOCALE && defined HAVE_LOCALE_H |
27 | #include <locale.h> | |
28 | #endif | |
c627d613 | 29 | |
50839b4b WD |
30 | extern int dry_run; |
31 | extern int list_only; | |
32eda096 | 32 | extern int am_root; |
d9c7edf6 WD |
33 | extern int am_server; |
34 | extern int am_sender; | |
35 | extern int am_daemon; | |
3ea6e0e7 | 36 | extern int inc_recurse; |
32eda096 | 37 | extern int blocking_io; |
886df221 | 38 | extern int always_checksum; |
47c11975 | 39 | extern int remove_source_files; |
951e826b | 40 | extern int output_needs_newline; |
bf26aa22 | 41 | extern int need_messages_from_generator; |
051182cb | 42 | extern int kluge_around_eof; |
3f0211b6 | 43 | extern int got_xfer_error; |
eabc85ef | 44 | extern int msgs2stderr; |
32eda096 | 45 | extern int module_id; |
bb6721dc | 46 | extern int copy_links; |
a695b379 | 47 | extern int copy_dirlinks; |
01103e18 | 48 | extern int copy_unsafe_links; |
83926d3c | 49 | extern int keep_dirlinks; |
32eda096 | 50 | extern int preserve_hard_links; |
d04e9c51 | 51 | extern int protocol_version; |
f3d6d480 | 52 | extern int file_total; |
32eda096 | 53 | extern int recurse; |
26bbb6aa | 54 | extern int xfer_dirs; |
f7e5068d | 55 | extern int protect_args; |
32eda096 | 56 | extern int relative_paths; |
7c58c991 | 57 | extern int sanitize_paths; |
c2a2147a | 58 | extern int curr_dir_depth; |
615a5415 | 59 | extern int curr_dir_len; |
7c58c991 | 60 | extern int module_id; |
32eda096 | 61 | extern int rsync_port; |
b1df18d7 | 62 | extern int whole_file; |
32eda096 WD |
63 | extern int read_batch; |
64 | extern int write_batch; | |
b9f592fb | 65 | extern int batch_fd; |
32eda096 | 66 | extern int filesfrom_fd; |
ba22c9e2 | 67 | extern int connect_timeout; |
32eda096 | 68 | extern pid_t cleanup_child_pid; |
a1018691 | 69 | extern unsigned int module_dirlen; |
50839b4b | 70 | extern struct stats stats; |
886df221 WD |
71 | extern char *stdout_format; |
72 | extern char *logfile_format; | |
860236bf | 73 | extern char *filesfrom_host; |
c2c8db91 | 74 | extern char *partial_dir; |
ce27f36d | 75 | extern char *dest_option; |
32eda096 WD |
76 | extern char *rsync_path; |
77 | extern char *shell_cmd; | |
9b3318b0 | 78 | extern char *batch_name; |
a39da29a | 79 | extern char *password_file; |
3696674b | 80 | extern char *backup_dir; |
615a5415 | 81 | extern char curr_dir[MAXPATHLEN]; |
3696674b | 82 | extern char backup_dir_buf[MAXPATHLEN]; |
b791d680 | 83 | extern char *basis_dir[MAX_BASIS_DIRS+1]; |
da131912 | 84 | extern struct file_list *first_flist; |
7b6c5c77 | 85 | extern filter_rule_list daemon_filter_list; |
57dee64e | 86 | |
19284e2e | 87 | uid_t our_uid; |
3b83a220 | 88 | gid_t our_gid; |
93465f51 | 89 | int am_generator = 0; |
57dee64e | 90 | int local_server = 0; |
e208631a | 91 | int daemon_over_rsh = 0; |
05278935 | 92 | mode_t orig_umask = 0; |
f3d6d480 | 93 | int batch_gen_fd = -1; |
886df221 | 94 | int sender_keeps_checksum = 0; |
c627d613 | 95 | |
91c5833b WD |
96 | /* There's probably never more than at most 2 outstanding child processes, |
97 | * but set it higher, just in case. */ | |
84e6d6fd | 98 | #define MAXCHILDPROCS 7 |
ee7118a8 | 99 | |
8261af74 WD |
100 | #ifdef HAVE_SIGACTION |
101 | # ifdef HAVE_SIGPROCMASK | |
102 | # define SIGACTMASK(n,h) SIGACTION(n,h), sigaddset(&sigmask,(n)) | |
103 | # else | |
104 | # define SIGACTMASK(n,h) SIGACTION(n,h) | |
105 | # endif | |
60ee01f5 WD |
106 | static struct sigaction sigact; |
107 | #endif | |
108 | ||
ee7118a8 DD |
109 | struct pid_status { |
110 | pid_t pid; | |
84e6d6fd | 111 | int status; |
ee7118a8 DD |
112 | } pid_stat_table[MAXCHILDPROCS]; |
113 | ||
33c4b445 WD |
114 | static time_t starttime, endtime; |
115 | static int64 total_read, total_written; | |
116 | ||
e5a2b854 | 117 | static void show_malloc_stats(void); |
82980a23 | 118 | |
97d8e709 | 119 | /* Works like waitpid(), but if we already harvested the child pid in our |
6d59ac19 | 120 | * remember_children(), we succeed instead of returning an error. */ |
97d8e709 | 121 | pid_t wait_process(pid_t pid, int *status_ptr, int flags) |
82980a23 | 122 | { |
d365e229 WD |
123 | pid_t waited_pid; |
124 | ||
125 | do { | |
126 | waited_pid = waitpid(pid, status_ptr, flags); | |
127 | } while (waited_pid == -1 && errno == EINTR); | |
d9c7edf6 | 128 | |
6fb812f7 | 129 | if (waited_pid == -1 && errno == ECHILD) { |
97d8e709 | 130 | /* Status of requested child no longer available: check to |
6d59ac19 | 131 | * see if it was processed by remember_children(). */ |
97d8e709 | 132 | int cnt; |
84e6d6fd | 133 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { |
ee7118a8 | 134 | if (pid == pid_stat_table[cnt].pid) { |
97d8e709 | 135 | *status_ptr = pid_stat_table[cnt].status; |
ee7118a8 | 136 | pid_stat_table[cnt].pid = 0; |
97d8e709 | 137 | return pid; |
ee7118a8 DD |
138 | } |
139 | } | |
140 | } | |
141 | ||
97d8e709 WD |
142 | return waited_pid; |
143 | } | |
144 | ||
145 | /* Wait for a process to exit, calling io_flush while waiting. */ | |
84e6d6fd | 146 | static void wait_process_with_flush(pid_t pid, int *exit_code_ptr) |
97d8e709 WD |
147 | { |
148 | pid_t waited_pid; | |
149 | int status; | |
150 | ||
151 | while ((waited_pid = wait_process(pid, &status, WNOHANG)) == 0) { | |
152 | msleep(20); | |
153 | io_flush(FULL_FLUSH); | |
154 | } | |
155 | ||
d9c7edf6 WD |
156 | /* TODO: If the child exited on a signal, then log an |
157 | * appropriate error message. Perhaps we should also accept a | |
158 | * message describing the purpose of the child. Also indicate | |
dbefb6b4 | 159 | * this to the caller so that they know something went wrong. */ |
84e6d6fd WD |
160 | if (waited_pid < 0) { |
161 | rsyserr(FERROR, errno, "waitpid"); | |
162 | *exit_code_ptr = RERR_WAITCHILD; | |
163 | } else if (!WIFEXITED(status)) { | |
40e6752f | 164 | #ifdef WCOREDUMP |
dbefb6b4 | 165 | if (WCOREDUMP(status)) |
84e6d6fd | 166 | *exit_code_ptr = RERR_CRASHED; |
40e6752f WD |
167 | else |
168 | #endif | |
169 | if (WIFSIGNALED(status)) | |
84e6d6fd | 170 | *exit_code_ptr = RERR_TERMINATED; |
dbefb6b4 | 171 | else |
84e6d6fd | 172 | *exit_code_ptr = RERR_WAITCHILD; |
dbefb6b4 | 173 | } else |
84e6d6fd | 174 | *exit_code_ptr = WEXITSTATUS(status); |
82980a23 AT |
175 | } |
176 | ||
e366e530 WD |
177 | void write_del_stats(int f) |
178 | { | |
bc40a305 WD |
179 | if (read_batch) |
180 | write_int(f, NDX_DEL_STATS); | |
181 | else | |
182 | send_msg(MSG_DEL_STATS, "", 0, 0); | |
e366e530 WD |
183 | write_varint(f, stats.deleted_files - stats.deleted_dirs |
184 | - stats.deleted_symlinks - stats.deleted_devices | |
185 | - stats.deleted_specials); | |
186 | write_varint(f, stats.deleted_dirs); | |
187 | write_varint(f, stats.deleted_symlinks); | |
188 | write_varint(f, stats.deleted_devices); | |
189 | write_varint(f, stats.deleted_specials); | |
190 | } | |
191 | ||
192 | void read_del_stats(int f) | |
193 | { | |
e366e530 WD |
194 | stats.deleted_files = read_varint(f); |
195 | stats.deleted_files += stats.deleted_dirs = read_varint(f); | |
196 | stats.deleted_files += stats.deleted_symlinks = read_varint(f); | |
197 | stats.deleted_files += stats.deleted_devices = read_varint(f); | |
198 | stats.deleted_files += stats.deleted_specials = read_varint(f); | |
199 | } | |
200 | ||
b9f592fb WD |
201 | /* This function gets called from all 3 processes. We want the client side |
202 | * to actually output the text, but the sender is the only process that has | |
203 | * all the stats we need. So, if we're a client sender, we do the report. | |
204 | * If we're a server sender, we write the stats on the supplied fd. If | |
205 | * we're the client receiver we read the stats from the supplied fd and do | |
206 | * the report. All processes might also generate a set of debug stats, if | |
207 | * the verbose level is high enough (this is the only thing that the | |
208 | * generator process and the server receiver ever do here). */ | |
33c4b445 | 209 | static void handle_stats(int f) |
c627d613 | 210 | { |
33c4b445 WD |
211 | endtime = time(NULL); |
212 | ||
b9f592fb | 213 | /* Cache two stats because the read/write code can change it. */ |
33c4b445 WD |
214 | total_read = stats.total_read; |
215 | total_written = stats.total_written; | |
7a6421fa | 216 | |
951e826b | 217 | if (INFO_GTE(STATS, 3)) { |
5c15e29f | 218 | /* These come out from every process */ |
7bb7058e | 219 | show_malloc_stats(); |
86943126 | 220 | show_flist_stats(); |
5c15e29f MP |
221 | } |
222 | ||
e5fbaa71 S |
223 | if (am_generator) |
224 | return; | |
225 | ||
248fbb8c | 226 | if (am_daemon) { |
83926d3c WD |
227 | if (f == -1 || !am_sender) |
228 | return; | |
248fbb8c AT |
229 | } |
230 | ||
e19452a9 | 231 | if (am_server) { |
3e491682 | 232 | if (am_sender) { |
a72ba0cf WD |
233 | write_varlong30(f, total_read, 3); |
234 | write_varlong30(f, total_written, 3); | |
235 | write_varlong30(f, stats.total_size, 3); | |
f0f7e760 | 236 | if (protocol_version >= 29) { |
a72ba0cf WD |
237 | write_varlong30(f, stats.flist_buildtime, 3); |
238 | write_varlong30(f, stats.flist_xfertime, 3); | |
f0f7e760 | 239 | } |
e19452a9 | 240 | } |
7a6421fa AT |
241 | return; |
242 | } | |
e19452a9 DD |
243 | |
244 | /* this is the client */ | |
d9c7edf6 | 245 | |
9d19f8a5 | 246 | if (f < 0 && !am_sender) /* e.g. when we got an empty file list. */ |
0f78b815 | 247 | ; |
9d19f8a5 | 248 | else if (!am_sender) { |
58c5c245 WD |
249 | /* Read the first two in opposite order because the meaning of |
250 | * read/write swaps when switching from sender to receiver. */ | |
a72ba0cf WD |
251 | total_written = read_varlong30(f, 3); |
252 | total_read = read_varlong30(f, 3); | |
253 | stats.total_size = read_varlong30(f, 3); | |
f0f7e760 | 254 | if (protocol_version >= 29) { |
a72ba0cf WD |
255 | stats.flist_buildtime = read_varlong30(f, 3); |
256 | stats.flist_xfertime = read_varlong30(f, 3); | |
f0f7e760 | 257 | } |
e4676bb5 | 258 | } else if (write_batch) { |
b9f592fb WD |
259 | /* The --read-batch process is going to be a client |
260 | * receiver, so we need to give it the stats. */ | |
a72ba0cf WD |
261 | write_varlong30(batch_fd, total_read, 3); |
262 | write_varlong30(batch_fd, total_written, 3); | |
263 | write_varlong30(batch_fd, stats.total_size, 3); | |
f0f7e760 | 264 | if (protocol_version >= 29) { |
a72ba0cf WD |
265 | write_varlong30(batch_fd, stats.flist_buildtime, 3); |
266 | write_varlong30(batch_fd, stats.flist_xfertime, 3); | |
f0f7e760 | 267 | } |
e366e530 WD |
268 | } |
269 | } | |
270 | ||
271 | static void output_itemized_counts(const char *prefix, int *counts) | |
272 | { | |
273 | static char *labels[] = { "reg", "dir", "link", "dev", "special" }; | |
274 | char buf[1024], *pre = " ("; | |
275 | int j, len = 0; | |
276 | int total = counts[0]; | |
277 | if (total) { | |
278 | counts[0] -= counts[1] + counts[2] + counts[3] + counts[4]; | |
279 | for (j = 0; j < 5; j++) { | |
280 | if (counts[j]) { | |
281 | len += snprintf(buf+len, sizeof buf - len - 2, | |
282 | "%s%s: %s", | |
283 | pre, labels[j], comma_num(counts[j])); | |
284 | pre = ", "; | |
285 | } | |
286 | } | |
287 | buf[len++] = ')'; | |
a800434a | 288 | } |
e366e530 WD |
289 | buf[len] = '\0'; |
290 | rprintf(FINFO, "%s: %s%s\n", prefix, comma_num(total), buf); | |
e4676bb5 | 291 | } |
a800434a | 292 | |
e4676bb5 WD |
293 | static void output_summary(void) |
294 | { | |
951e826b | 295 | if (INFO_GTE(STATS, 2)) { |
b64ee91a | 296 | rprintf(FCLIENT, "\n"); |
e366e530 WD |
297 | output_itemized_counts("Number of files", &stats.num_files); |
298 | if (protocol_version >= 29) | |
299 | output_itemized_counts("Number of created files", &stats.created_files); | |
300 | if (protocol_version >= 31) | |
301 | output_itemized_counts("Number of deleted files", &stats.deleted_files); | |
302 | rprintf(FINFO,"Number of regular files transferred: %s\n", | |
303 | comma_num(stats.xferred_files)); | |
60613dc8 | 304 | rprintf(FINFO,"Total file size: %s bytes\n", |
adc2476f | 305 | human_num(stats.total_size)); |
60613dc8 | 306 | rprintf(FINFO,"Total transferred file size: %s bytes\n", |
adc2476f | 307 | human_num(stats.total_transferred_size)); |
60613dc8 | 308 | rprintf(FINFO,"Literal data: %s bytes\n", |
adc2476f | 309 | human_num(stats.literal_data)); |
60613dc8 | 310 | rprintf(FINFO,"Matched data: %s bytes\n", |
adc2476f | 311 | human_num(stats.matched_data)); |
eb0144d7 | 312 | rprintf(FINFO,"File list size: %s\n", |
adc2476f | 313 | human_num(stats.flist_size)); |
f0f7e760 WD |
314 | if (stats.flist_buildtime) { |
315 | rprintf(FINFO, | |
adc2476f WD |
316 | "File list generation time: %s seconds\n", |
317 | comma_dnum((double)stats.flist_buildtime / 1000, 3)); | |
f0f7e760 | 318 | rprintf(FINFO, |
adc2476f WD |
319 | "File list transfer time: %s seconds\n", |
320 | comma_dnum((double)stats.flist_xfertime / 1000, 3)); | |
f0f7e760 | 321 | } |
60613dc8 | 322 | rprintf(FINFO,"Total bytes sent: %s\n", |
adc2476f | 323 | human_num(total_written)); |
60613dc8 | 324 | rprintf(FINFO,"Total bytes received: %s\n", |
adc2476f | 325 | human_num(total_read)); |
7a6421fa | 326 | } |
d9c7edf6 | 327 | |
951e826b | 328 | if (INFO_GTE(STATS, 1)) { |
b64ee91a | 329 | rprintf(FCLIENT, "\n"); |
b9f592fb | 330 | rprintf(FINFO, |
b64ee91a | 331 | "sent %s bytes received %s bytes %s bytes/sec\n", |
adc2476f | 332 | human_num(total_written), human_num(total_read), |
60613dc8 | 333 | human_dnum((total_written + total_read)/(0.5 + (endtime - starttime)), 2)); |
adc2476f WD |
334 | rprintf(FINFO, "total size is %s speedup is %s%s\n", |
335 | human_num(stats.total_size), | |
336 | comma_dnum((double)stats.total_size / (total_written+total_read), 2), | |
641dc0c5 | 337 | write_batch < 0 ? " (BATCH ONLY)" : dry_run ? " (DRY RUN)" : ""); |
e19452a9 | 338 | } |
fc8a6b97 AT |
339 | |
340 | fflush(stdout); | |
341 | fflush(stderr); | |
c627d613 AT |
342 | } |
343 | ||
344 | ||
e5a2b854 MP |
345 | /** |
346 | * If our C library can get malloc statistics, then show them to FINFO | |
347 | **/ | |
348 | static void show_malloc_stats(void) | |
349 | { | |
4f5b0756 | 350 | #ifdef HAVE_MALLINFO |
e5a2b854 MP |
351 | struct mallinfo mi; |
352 | ||
353 | mi = mallinfo(); | |
354 | ||
b64ee91a WD |
355 | rprintf(FCLIENT, "\n"); |
356 | rprintf(FINFO, RSYNC_NAME "[%d] (%s%s%s) heap statistics:\n", | |
f846a9bf WD |
357 | getpid(), am_server ? "server " : "", |
358 | am_daemon ? "daemon " : "", who_am_i()); | |
359 | rprintf(FINFO, " arena: %10ld (bytes from sbrk)\n", | |
360 | (long)mi.arena); | |
361 | rprintf(FINFO, " ordblks: %10ld (chunks not in use)\n", | |
362 | (long)mi.ordblks); | |
363 | rprintf(FINFO, " smblks: %10ld\n", | |
364 | (long)mi.smblks); | |
365 | rprintf(FINFO, " hblks: %10ld (chunks from mmap)\n", | |
366 | (long)mi.hblks); | |
367 | rprintf(FINFO, " hblkhd: %10ld (bytes from mmap)\n", | |
368 | (long)mi.hblkhd); | |
369 | rprintf(FINFO, " allmem: %10ld (bytes from sbrk + mmap)\n", | |
370 | (long)mi.arena + mi.hblkhd); | |
371 | rprintf(FINFO, " usmblks: %10ld\n", | |
372 | (long)mi.usmblks); | |
373 | rprintf(FINFO, " fsmblks: %10ld\n", | |
374 | (long)mi.fsmblks); | |
375 | rprintf(FINFO, " uordblks: %10ld (bytes used)\n", | |
376 | (long)mi.uordblks); | |
377 | rprintf(FINFO, " fordblks: %10ld (bytes free)\n", | |
378 | (long)mi.fordblks); | |
379 | rprintf(FINFO, " keepcost: %10ld (bytes in releasable chunk)\n", | |
380 | (long)mi.keepcost); | |
e5a2b854 MP |
381 | #endif /* HAVE_MALLINFO */ |
382 | } | |
383 | ||
384 | ||
0882faa2 | 385 | /* Start the remote shell. cmd may be NULL to use the default. */ |
f7e5068d WD |
386 | static pid_t do_cmd(char *cmd, char *machine, char *user, char **remote_argv, int remote_argc, |
387 | int *f_in_p, int *f_out_p) | |
c627d613 | 388 | { |
6c2e5b56 | 389 | int i, argc = 0; |
887e553f | 390 | char *args[MAX_ARGS]; |
53936ef9 | 391 | pid_t pid; |
bb4aa89c | 392 | int dash_l_set = 0; |
366345fe | 393 | |
088aac85 | 394 | if (!read_batch && !local_server) { |
82f0c63e | 395 | char *t, *f, in_quote = '\0'; |
9af87151 | 396 | char *rsh_env = getenv(RSYNC_RSH_ENV); |
366345fe | 397 | if (!cmd) |
9af87151 | 398 | cmd = rsh_env; |
366345fe AT |
399 | if (!cmd) |
400 | cmd = RSYNC_RSH; | |
aa0e6b99 | 401 | cmd = strdup(cmd); /* MEMORY LEAK */ |
d9c7edf6 | 402 | if (!cmd) |
366345fe AT |
403 | goto oom; |
404 | ||
82f0c63e WD |
405 | for (t = f = cmd; *f; f++) { |
406 | if (*f == ' ') | |
407 | continue; | |
e7a392c7 | 408 | /* Comparison leaves rooms for server_options(). */ |
f7e5068d WD |
409 | if (argc >= MAX_ARGS - MAX_SERVER_ARGS) |
410 | goto arg_overflow; | |
82f0c63e WD |
411 | args[argc++] = t; |
412 | while (*f != ' ' || in_quote) { | |
413 | if (!*f) { | |
414 | if (in_quote) { | |
415 | rprintf(FERROR, | |
416 | "Missing trailing-%c in remote-shell command.\n", | |
417 | in_quote); | |
418 | exit_cleanup(RERR_SYNTAX); | |
419 | } | |
420 | f--; | |
421 | break; | |
422 | } | |
423 | if (*f == '\'' || *f == '"') { | |
424 | if (!in_quote) { | |
425 | in_quote = *f++; | |
426 | continue; | |
427 | } | |
428 | if (*f == in_quote && *++f != in_quote) { | |
429 | in_quote = '\0'; | |
430 | continue; | |
431 | } | |
432 | } | |
433 | *t++ = *f++; | |
434 | } | |
435 | *t++ = '\0'; | |
887e553f | 436 | } |
c627d613 | 437 | |
d9c7edf6 | 438 | /* check to see if we've already been given '-l user' in |
9af87151 | 439 | * the remote-shell command */ |
bb4aa89c WD |
440 | for (i = 0; i < argc-1; i++) { |
441 | if (!strcmp(args[i], "-l") && args[i+1][0] != '-') | |
442 | dash_l_set = 1; | |
443 | } | |
444 | ||
4f5b0756 | 445 | #ifdef HAVE_REMSH |
366345fe AT |
446 | /* remsh (on HPUX) takes the arguments the other way around */ |
447 | args[argc++] = machine; | |
bb4aa89c | 448 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
449 | args[argc++] = "-l"; |
450 | args[argc++] = user; | |
451 | } | |
7b8356d0 | 452 | #else |
bb4aa89c | 453 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
454 | args[argc++] = "-l"; |
455 | args[argc++] = user; | |
456 | } | |
457 | args[argc++] = machine; | |
7b8356d0 | 458 | #endif |
c627d613 | 459 | |
366345fe | 460 | args[argc++] = rsync_path; |
c627d613 | 461 | |
9af87151 | 462 | if (blocking_io < 0) { |
90e22f4b WD |
463 | char *cp; |
464 | if ((cp = strrchr(cmd, '/')) != NULL) | |
465 | cp++; | |
466 | else | |
467 | cp = cmd; | |
468 | if (strcmp(cp, "rsh") == 0 || strcmp(cp, "remsh") == 0) | |
469 | blocking_io = 1; | |
66b71163 | 470 | } |
e384bfbd | 471 | |
93689aa5 | 472 | server_options(args,&argc); |
e7a392c7 | 473 | |
f7e5068d WD |
474 | if (argc >= MAX_ARGS - 2) |
475 | goto arg_overflow; | |
366345fe | 476 | } |
c627d613 | 477 | |
366345fe | 478 | args[argc++] = "."; |
76076c4b | 479 | |
f7e5068d WD |
480 | if (!daemon_over_rsh) { |
481 | while (remote_argc > 0) { | |
482 | if (argc >= MAX_ARGS - 1) { | |
483 | arg_overflow: | |
484 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
485 | exit_cleanup(RERR_SYNTAX); | |
486 | } | |
487 | args[argc++] = *remote_argv++; | |
488 | remote_argc--; | |
489 | } | |
490 | } | |
c627d613 | 491 | |
366345fe | 492 | args[argc] = NULL; |
c627d613 | 493 | |
951e826b | 494 | if (DEBUG_GTE(CMD, 2)) { |
e7a392c7 | 495 | for (i = 0; i < argc; i++) |
b64ee91a WD |
496 | rprintf(FCLIENT, "cmd[%d]=%s ", i, args[i]); |
497 | rprintf(FCLIENT, "\n"); | |
366345fe AT |
498 | } |
499 | ||
c0d8e84c WD |
500 | if (read_batch) { |
501 | int from_gen_pipe[2]; | |
ea4e8cf8 | 502 | set_allow_inc_recurse(); |
c0d8e84c WD |
503 | if (fd_pair(from_gen_pipe) < 0) { |
504 | rsyserr(FERROR, errno, "pipe"); | |
505 | exit_cleanup(RERR_IPC); | |
506 | } | |
507 | batch_gen_fd = from_gen_pipe[0]; | |
f7e5068d WD |
508 | *f_out_p = from_gen_pipe[1]; |
509 | *f_in_p = batch_fd; | |
53936ef9 | 510 | pid = (pid_t)-1; /* no child pid */ |
44c4492a | 511 | #ifdef ICONV_CONST |
b61665d5 | 512 | setup_iconv(); |
44c4492a | 513 | #endif |
c0d8e84c | 514 | } else if (local_server) { |
b1df18d7 WD |
515 | /* If the user didn't request --[no-]whole-file, force |
516 | * it on, but only if we're not batch processing. */ | |
c0d8e84c | 517 | if (whole_file < 0 && !write_batch) |
b1df18d7 | 518 | whole_file = 1; |
ea4e8cf8 | 519 | set_allow_inc_recurse(); |
53936ef9 | 520 | pid = local_child(argc, args, f_in_p, f_out_p, child_main); |
44c4492a | 521 | #ifdef ICONV_CONST |
b61665d5 | 522 | setup_iconv(); |
44c4492a | 523 | #endif |
f7e5068d | 524 | } else { |
53936ef9 | 525 | pid = piped_child(args, f_in_p, f_out_p); |
44c4492a | 526 | #ifdef ICONV_CONST |
b61665d5 | 527 | setup_iconv(); |
44c4492a | 528 | #endif |
d8e8ef32 | 529 | if (protect_args && !daemon_over_rsh) |
53936ef9 | 530 | send_protected_args(*f_out_p, args); |
f7e5068d | 531 | } |
c627d613 | 532 | |
53936ef9 | 533 | return pid; |
c627d613 | 534 | |
acee11fc | 535 | oom: |
366345fe AT |
536 | out_of_memory("do_cmd"); |
537 | return 0; /* not reached */ | |
c627d613 AT |
538 | } |
539 | ||
eb598fac WD |
540 | /* The receiving side operates in one of two modes: |
541 | * | |
cc8c5057 WD |
542 | * 1. it receives any number of files into a destination directory, |
543 | * placing them according to their names in the file-list. | |
eb598fac WD |
544 | * |
545 | * 2. it receives a single file and saves it using the name in the | |
546 | * destination path instead of its file-list name. This requires a | |
547 | * "local name" for writing out the destination file. | |
548 | * | |
a7d461fc WD |
549 | * So, our task is to figure out what mode/local-name we need. |
550 | * For mode 1, we change into the destination directory and return NULL. | |
551 | * For mode 2, we change into the directory containing the destination | |
552 | * file (if we aren't already there) and return the local-name. */ | |
eb598fac | 553 | static char *get_local_name(struct file_list *flist, char *dest_path) |
c627d613 | 554 | { |
7a6421fa | 555 | STRUCT_STAT st; |
a7d461fc | 556 | int statret; |
eb598fac | 557 | char *cp; |
c627d613 | 558 | |
951e826b | 559 | if (DEBUG_GTE(RECV, 1)) { |
eb598fac | 560 | rprintf(FINFO, "get_local_name count=%d %s\n", |
f3d6d480 | 561 | file_total, NS(dest_path)); |
eb598fac | 562 | } |
1f0610ef | 563 | |
ee8e2b15 | 564 | if (!dest_path || list_only) |
1f0610ef | 565 | return NULL; |
c95da96a | 566 | |
311676ed WD |
567 | if (daemon_filter_list.head) { |
568 | char *slash = strrchr(dest_path, '/'); | |
164cb66a | 569 | if (slash && (slash[1] == '\0' || (slash[1] == '.' && slash[2] == '\0'))) |
311676ed WD |
570 | *slash = '\0'; |
571 | else | |
572 | slash = NULL; | |
164cb66a WD |
573 | if ((*dest_path != '.' || dest_path[1] != '\0') |
574 | && (check_filter(&daemon_filter_list, FLOG, dest_path, 0) < 0 | |
575 | || check_filter(&daemon_filter_list, FLOG, dest_path, 1) < 0)) { | |
311676ed WD |
576 | rprintf(FERROR, "skipping daemon-excluded destination \"%s\"\n", |
577 | dest_path); | |
578 | exit_cleanup(RERR_FILESELECT); | |
579 | } | |
580 | if (slash) | |
581 | *slash = '/'; | |
99c3e591 WD |
582 | } |
583 | ||
a7d461fc | 584 | /* See what currently exists at the destination. */ |
1a7f3d99 | 585 | if ((statret = do_stat(dest_path, &st)) == 0) { |
a7d461fc | 586 | /* If the destination is a dir, enter it and use mode 1. */ |
1ff5450d | 587 | if (S_ISDIR(st.st_mode)) { |
29a89172 WD |
588 | if (!change_dir(dest_path, CD_NORMAL)) { |
589 | rsyserr(FERROR, errno, "change_dir#1 %s failed", | |
eb598fac | 590 | full_fname(dest_path)); |
65417579 | 591 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
592 | } |
593 | return NULL; | |
594 | } | |
f3d6d480 | 595 | if (file_total > 1) { |
eb598fac WD |
596 | rprintf(FERROR, |
597 | "ERROR: destination must be a directory when" | |
598 | " copying more than 1 file\n"); | |
65417579 | 599 | exit_cleanup(RERR_FILESELECT); |
1ff5450d | 600 | } |
f3d6d480 | 601 | if (file_total == 1 && S_ISDIR(flist->files[0]->mode)) { |
44c26bf2 WD |
602 | rprintf(FERROR, |
603 | "ERROR: cannot overwrite non-directory" | |
604 | " with a directory\n"); | |
605 | exit_cleanup(RERR_FILESELECT); | |
606 | } | |
cc8c5057 | 607 | } else if (errno != ENOENT) { |
a7d461fc WD |
608 | /* If we don't know what's at the destination, fail. */ |
609 | rsyserr(FERROR, errno, "ERROR: cannot stat destination %s", | |
cc8c5057 WD |
610 | full_fname(dest_path)); |
611 | exit_cleanup(RERR_FILESELECT); | |
1ff5450d AT |
612 | } |
613 | ||
eb598fac WD |
614 | cp = strrchr(dest_path, '/'); |
615 | ||
a7d461fc WD |
616 | /* If we need a destination directory because the transfer is not |
617 | * of a single non-directory or the user has requested one via a | |
618 | * destination path ending in a slash, create one and use mode 1. */ | |
f3d6d480 | 619 | if (file_total > 1 || (cp && !cp[1])) { |
eb598fac WD |
620 | /* Lop off the final slash (if any). */ |
621 | if (cp && !cp[1]) | |
622 | *cp = '\0'; | |
623 | ||
a7d461fc WD |
624 | if (statret == 0) { |
625 | rprintf(FERROR, | |
626 | "ERROR: destination path is not a directory\n"); | |
627 | exit_cleanup(RERR_SYNTAX); | |
628 | } | |
629 | ||
05278935 | 630 | if (mkdir_defmode(dest_path) != 0) { |
eb598fac WD |
631 | rsyserr(FERROR, errno, "mkdir %s failed", |
632 | full_fname(dest_path)); | |
633 | exit_cleanup(RERR_FILEIO); | |
634 | } | |
1ff5450d | 635 | |
7341ee2d WD |
636 | if (flist->high >= flist->low |
637 | && strcmp(flist->files[flist->low]->basename, ".") == 0) | |
288b12ee | 638 | flist->files[0]->flags |= FLAG_DIR_CREATED; |
2a94207a | 639 | |
951e826b | 640 | if (INFO_GTE(NAME, 1)) |
eb598fac WD |
641 | rprintf(FINFO, "created directory %s\n", dest_path); |
642 | ||
643 | if (dry_run) { | |
615a5415 | 644 | /* Indicate that dest dir doesn't really exist. */ |
eb598fac | 645 | dry_run++; |
eb598fac WD |
646 | } |
647 | ||
29a89172 WD |
648 | if (!change_dir(dest_path, dry_run > 1 ? CD_SKIP_CHDIR : CD_NORMAL)) { |
649 | rsyserr(FERROR, errno, "change_dir#2 %s failed", | |
eb598fac WD |
650 | full_fname(dest_path)); |
651 | exit_cleanup(RERR_FILESELECT); | |
652 | } | |
e5a96f0f | 653 | |
e5a96f0f | 654 | return NULL; |
1ff5450d AT |
655 | } |
656 | ||
eb598fac WD |
657 | /* Otherwise, we are writing a single file, possibly on top of an |
658 | * existing non-directory. Change to the item's parent directory | |
659 | * (if it has a path component), return the basename of the | |
660 | * destination file as the local name, and use mode 2. */ | |
661 | if (!cp) | |
662 | return dest_path; | |
663 | ||
664 | if (cp == dest_path) | |
665 | dest_path = "/"; | |
666 | ||
667 | *cp = '\0'; | |
29a89172 WD |
668 | if (!change_dir(dest_path, CD_NORMAL)) { |
669 | rsyserr(FERROR, errno, "change_dir#3 %s failed", | |
eb598fac | 670 | full_fname(dest_path)); |
65417579 | 671 | exit_cleanup(RERR_FILESELECT); |
1ff5450d | 672 | } |
eb598fac | 673 | *cp = '/'; |
1ff5450d | 674 | |
eb598fac | 675 | return cp + 1; |
c627d613 AT |
676 | } |
677 | ||
ce27f36d WD |
678 | /* This function checks on our alternate-basis directories. If we're in |
679 | * dry-run mode and the destination dir does not yet exist, we'll try to | |
680 | * tweak any dest-relative paths to make them work for a dry-run (the | |
681 | * destination dir must be in curr_dir[] when this function is called). | |
42a28d9d | 682 | * We also warn about any arg that is non-existent or not a directory. */ |
ce27f36d | 683 | static void check_alt_basis_dirs(void) |
615a5415 | 684 | { |
ce27f36d WD |
685 | STRUCT_STAT st; |
686 | char **dir_p, *slash = strrchr(curr_dir, '/'); | |
687 | ||
688 | for (dir_p = basis_dir; *dir_p; dir_p++) { | |
689 | if (dry_run > 1 && **dir_p != '/') { | |
690 | int len = curr_dir_len + 1 + strlen(*dir_p) + 1; | |
691 | char *new = new_array(char, len); | |
692 | if (!new) | |
693 | out_of_memory("check_alt_basis_dirs"); | |
694 | if (slash && strncmp(*dir_p, "../", 3) == 0) { | |
695 | /* We want to remove only one leading "../" prefix for | |
696 | * the directory we couldn't create in dry-run mode: | |
697 | * this ensures that any other ".." references get | |
698 | * evaluated the same as they would for a live copy. */ | |
699 | *slash = '\0'; | |
700 | pathjoin(new, len, curr_dir, *dir_p + 3); | |
701 | *slash = '/'; | |
702 | } else | |
703 | pathjoin(new, len, curr_dir, *dir_p); | |
704 | *dir_p = new; | |
705 | } | |
706 | if (do_stat(*dir_p, &st) < 0) { | |
707 | rprintf(FWARNING, "%s arg does not exist: %s\n", | |
708 | dest_option, *dir_p); | |
709 | } else if (!S_ISDIR(st.st_mode)) { | |
710 | rprintf(FWARNING, "%s arg is not a dir: %s\n", | |
711 | dest_option, *dir_p); | |
712 | } | |
615a5415 WD |
713 | } |
714 | } | |
c627d613 | 715 | |
1a8e5c97 | 716 | /* This is only called by the sender. */ |
bc40a305 | 717 | static void read_final_goodbye(int f_in, int f_out) |
4e0fcd85 | 718 | { |
f3d6d480 WD |
719 | int i, iflags, xlen; |
720 | uchar fnamecmp_type; | |
721 | char xname[MAXPATHLEN]; | |
1a8e5c97 WD |
722 | |
723 | if (protocol_version < 29) | |
724 | i = read_int(f_in); | |
725 | else { | |
bc40a305 WD |
726 | i = read_ndx_and_attrs(f_in, &iflags, &fnamecmp_type, xname, &xlen); |
727 | if (protocol_version >= 31 && i == NDX_DONE) { | |
728 | if (am_sender) | |
729 | write_ndx(f_out, NDX_DONE); | |
730 | else { | |
731 | if (batch_gen_fd >= 0) { | |
732 | while (read_int(batch_gen_fd) != NDX_DEL_STATS) {} | |
733 | read_del_stats(batch_gen_fd); | |
734 | } | |
735 | send_msg(MSG_DONE, "", 0, 0); | |
736 | } | |
737 | i = read_ndx_and_attrs(f_in, &iflags, &fnamecmp_type, xname, &xlen); | |
738 | } | |
4e0fcd85 WD |
739 | } |
740 | ||
82ad07c4 | 741 | if (i != NDX_DONE) { |
c7791b8c WD |
742 | rprintf(FERROR, "Invalid packet at end of run (%d) [%s]\n", |
743 | i, who_am_i()); | |
1a8e5c97 | 744 | exit_cleanup(RERR_PROTOCOL); |
4e0fcd85 WD |
745 | } |
746 | } | |
747 | ||
eb598fac | 748 | static void do_server_sender(int f_in, int f_out, int argc, char *argv[]) |
c627d613 | 749 | { |
7a6421fa AT |
750 | struct file_list *flist; |
751 | char *dir = argv[0]; | |
c627d613 | 752 | |
951e826b | 753 | if (DEBUG_GTE(SEND, 1)) { |
45e08edb WD |
754 | rprintf(FINFO, "server_sender starting pid=%ld\n", |
755 | (long)getpid()); | |
756 | } | |
d9c7edf6 | 757 | |
2adbcdc7 | 758 | if (am_daemon && lp_write_only(module_id)) { |
7a92ded3 WD |
759 | rprintf(FERROR, "ERROR: module is write only\n"); |
760 | exit_cleanup(RERR_SYNTAX); | |
761 | return; | |
762 | } | |
47c11975 | 763 | if (am_daemon && lp_read_only(module_id) && remove_source_files) { |
bf26aa22 | 764 | rprintf(FERROR, |
044ccbaa | 765 | "ERROR: --remove-%s-files cannot be used with a read-only module\n", |
47c11975 | 766 | remove_source_files == 1 ? "source" : "sent"); |
bf26aa22 WD |
767 | exit_cleanup(RERR_SYNTAX); |
768 | return; | |
769 | } | |
7a92ded3 | 770 | |
582c1589 | 771 | if (!relative_paths) { |
29a89172 WD |
772 | if (!change_dir(dir, CD_NORMAL)) { |
773 | rsyserr(FERROR, errno, "change_dir#3 %s failed", | |
582c1589 WD |
774 | full_fname(dir)); |
775 | exit_cleanup(RERR_FILESELECT); | |
776 | } | |
7a6421fa AT |
777 | } |
778 | argc--; | |
779 | argv++; | |
d9c7edf6 | 780 | |
e844a4a8 | 781 | if (argc == 0 && (recurse || xfer_dirs || list_only)) { |
e1f67417 | 782 | argc = 1; |
7a6421fa AT |
783 | argv--; |
784 | argv[0] = "."; | |
785 | } | |
d9c7edf6 | 786 | |
7a6421fa | 787 | flist = send_file_list(f_out,argc,argv); |
9decb4d2 | 788 | if (!flist || flist->used == 0) |
8d9dc9f9 | 789 | exit_cleanup(0); |
8d9dc9f9 | 790 | |
f3d6d480 | 791 | io_start_buffering_in(f_in); |
da3478b2 | 792 | |
f3d6d480 | 793 | send_files(f_in, f_out); |
f1e3656e | 794 | io_flush(FULL_FLUSH); |
33c4b445 | 795 | handle_stats(f_out); |
4e0fcd85 | 796 | if (protocol_version >= 24) |
bc40a305 | 797 | read_final_goodbye(f_in, f_out); |
f1e3656e | 798 | io_flush(FULL_FLUSH); |
7a6421fa | 799 | exit_cleanup(0); |
c627d613 AT |
800 | } |
801 | ||
802 | ||
f3d6d480 | 803 | static int do_recv(int f_in, int f_out, char *local_name) |
dc5ddbcc | 804 | { |
d186eb1a | 805 | int pid; |
84e6d6fd | 806 | int exit_code = 0; |
c70e07d9 | 807 | int error_pipe[2]; |
dc5ddbcc | 808 | |
bb6721dc WD |
809 | /* The receiving side mustn't obey this, or an existing symlink that |
810 | * points to an identical file won't be replaced by the referent. */ | |
01103e18 | 811 | copy_links = copy_dirlinks = copy_unsafe_links = 0; |
bb6721dc | 812 | |
1e1ca253 | 813 | #ifdef SUPPORT_HARD_LINKS |
d4d6646a | 814 | if (preserve_hard_links && !inc_recurse) |
da131912 | 815 | match_hard_links(first_flist); |
1e1ca253 | 816 | #endif |
dc5ddbcc | 817 | |
c70e07d9 | 818 | if (fd_pair(error_pipe) < 0) { |
ab759cd2 | 819 | rsyserr(FERROR, errno, "pipe failed in do_recv"); |
c8f2f857 | 820 | exit_cleanup(RERR_IPC); |
554e0a8d | 821 | } |
d9c7edf6 | 822 | |
3696674b WD |
823 | if (backup_dir) { |
824 | int ret = make_path(backup_dir_buf, MKP_DROP_NAME); /* drops trailing slash */ | |
825 | if (ret < 0) | |
826 | exit_cleanup(RERR_SYNTAX); | |
827 | if (ret) | |
828 | rprintf(FINFO, "Created backup_dir %s\n", backup_dir_buf); | |
4e9c7fae WD |
829 | else if (INFO_GTE(BACKUP, 1)) |
830 | rprintf(FINFO, "backup_dir is %s\n", backup_dir_buf); | |
3696674b WD |
831 | } |
832 | ||
f1e3656e | 833 | io_flush(NORMAL_FLUSH); |
c6e7fcb4 | 834 | |
ba449e44 | 835 | if ((pid = do_fork()) == -1) { |
c8f2f857 | 836 | rsyserr(FERROR, errno, "fork failed in do_recv"); |
ba449e44 WD |
837 | exit_cleanup(RERR_IPC); |
838 | } | |
839 | ||
840 | if (pid == 0) { | |
554e0a8d | 841 | close(error_pipe[0]); |
3a69fad0 WD |
842 | if (f_in != f_out) |
843 | close(f_out); | |
e08c9610 | 844 | |
554e0a8d | 845 | /* we can't let two processes write to the socket at one time */ |
f3d6d480 | 846 | io_end_multiplex_out(); |
554e0a8d AT |
847 | |
848 | /* set place to send errors */ | |
f1e3656e | 849 | set_msg_fd_out(error_pipe[1]); |
f3d6d480 | 850 | io_start_buffering_out(error_pipe[1]); |
554e0a8d | 851 | |
f3d6d480 | 852 | recv_files(f_in, local_name); |
f1e3656e | 853 | io_flush(FULL_FLUSH); |
33c4b445 | 854 | handle_stats(f_in); |
e08c9610 | 855 | |
951e826b WD |
856 | if (output_needs_newline) { |
857 | fputc('\n', stdout); | |
858 | output_needs_newline = 0; | |
859 | } | |
860 | ||
332cf6df | 861 | send_msg(MSG_DONE, "", 1, 0); |
a72ba0cf | 862 | write_varlong(error_pipe[1], stats.total_read, 3); |
f1e3656e | 863 | io_flush(FULL_FLUSH); |
4e0fcd85 | 864 | |
40df65fd WD |
865 | /* Handle any keep-alive packets from the post-processing work |
866 | * that the generator does. */ | |
4e0fcd85 | 867 | if (protocol_version >= 29) { |
051182cb | 868 | kluge_around_eof = -1; |
1a8e5c97 WD |
869 | |
870 | /* This should only get stopped via a USR2 signal. */ | |
bc40a305 | 871 | read_final_goodbye(f_in, f_out); |
1a8e5c97 | 872 | |
3485ae83 WD |
873 | rprintf(FERROR, "Invalid packet at end of run [%s]\n", |
874 | who_am_i()); | |
1a8e5c97 | 875 | exit_cleanup(RERR_PROTOCOL); |
4e0fcd85 WD |
876 | } |
877 | ||
9e0582f9 WD |
878 | /* Finally, we go to sleep until our parent kills us with a |
879 | * USR2 signal. We sleep for a short time, as on some OSes | |
880 | * a signal won't interrupt a sleep! */ | |
f1e3656e WD |
881 | while (1) |
882 | msleep(20); | |
d186eb1a | 883 | } |
dc5ddbcc | 884 | |
b695f242 | 885 | am_generator = 1; |
f3d6d480 WD |
886 | |
887 | io_end_multiplex_in(); | |
e8a96e27 | 888 | if (write_batch && !am_server) |
b9f592fb | 889 | stop_write_batch(); |
b695f242 | 890 | |
554e0a8d | 891 | close(error_pipe[1]); |
3a69fad0 WD |
892 | if (f_in != f_out) |
893 | close(f_in); | |
e1b3d5c4 | 894 | |
f3d6d480 | 895 | io_start_buffering_out(f_out); |
b3e10ed7 | 896 | |
f1e3656e | 897 | set_msg_fd_in(error_pipe[0]); |
f3d6d480 | 898 | io_start_buffering_in(error_pipe[0]); |
554e0a8d | 899 | |
da131912 WD |
900 | #ifdef SUPPORT_HARD_LINKS |
901 | if (preserve_hard_links && inc_recurse) { | |
902 | struct file_list *flist; | |
903 | for (flist = first_flist; flist; flist = flist->next) | |
904 | match_hard_links(flist); | |
905 | } | |
906 | #endif | |
907 | ||
f3d6d480 | 908 | generate_files(f_out, local_name); |
8d9dc9f9 | 909 | |
33c4b445 | 910 | handle_stats(-1); |
f1e3656e | 911 | io_flush(FULL_FLUSH); |
d04e9c51 | 912 | if (protocol_version >= 24) { |
8ada7518 | 913 | /* send a final goodbye message */ |
9ae7a2cd | 914 | write_ndx(f_out, NDX_DONE); |
8ada7518 | 915 | } |
f1e3656e | 916 | io_flush(FULL_FLUSH); |
8ada7518 | 917 | |
f1e3656e | 918 | set_msg_fd_in(-1); |
089a2435 | 919 | kill(pid, SIGUSR2); |
84e6d6fd WD |
920 | wait_process_with_flush(pid, &exit_code); |
921 | return exit_code; | |
dc5ddbcc AT |
922 | } |
923 | ||
f3d6d480 | 924 | static void do_server_recv(int f_in, int f_out, int argc, char *argv[]) |
c627d613 | 925 | { |
84e6d6fd | 926 | int exit_code; |
7a6421fa | 927 | struct file_list *flist; |
6c2e5b56 | 928 | char *local_name = NULL; |
951e826b | 929 | int negated_levels; |
07bff66f | 930 | |
eabc85ef | 931 | if (filesfrom_fd >= 0 && !msgs2stderr) { |
07bff66f | 932 | /* We can't mix messages with files-from data on the socket, |
951e826b WD |
933 | * so temporarily turn off info/debug messages. */ |
934 | negate_output_levels(); | |
935 | negated_levels = 1; | |
936 | } else | |
937 | negated_levels = 0; | |
f0fca04e | 938 | |
951e826b | 939 | if (DEBUG_GTE(RECV, 1)) { |
45e08edb WD |
940 | rprintf(FINFO, "server_recv(%d) starting pid=%ld\n", |
941 | argc, (long)getpid()); | |
942 | } | |
09b7f5db | 943 | |
2adbcdc7 | 944 | if (am_daemon && lp_read_only(module_id)) { |
09b7f5db AT |
945 | rprintf(FERROR,"ERROR: module is read only\n"); |
946 | exit_cleanup(RERR_SYNTAX); | |
947 | return; | |
948 | } | |
949 | ||
7a6421fa | 950 | if (argc > 0) { |
a1018691 | 951 | char *dir = argv[0]; |
7a6421fa AT |
952 | argc--; |
953 | argv++; | |
29a89172 WD |
954 | if (!am_daemon && !change_dir(dir, CD_NORMAL)) { |
955 | rsyserr(FERROR, errno, "change_dir#4 %s failed", | |
982e05bb | 956 | full_fname(dir)); |
65417579 | 957 | exit_cleanup(RERR_FILESELECT); |
d9c7edf6 | 958 | } |
7a6421fa | 959 | } |
c627d613 | 960 | |
f3d6d480 WD |
961 | if (protocol_version >= 30) |
962 | io_start_multiplex_in(); | |
963 | else | |
964 | io_start_buffering_in(f_in); | |
57dee64e | 965 | recv_filter_list(f_in); |
c627d613 | 966 | |
7c2a9e76 | 967 | if (filesfrom_fd >= 0) { |
07bff66f WD |
968 | /* We need to send the files-from names to the sender at the |
969 | * same time that we receive the file-list from them, so we | |
970 | * need the IO routines to automatically write out the names | |
971 | * onto our f_out socket as we read the file-list. This | |
972 | * avoids both deadlock and extra delays/buffers. */ | |
7c2a9e76 WD |
973 | io_set_filesfrom_fds(filesfrom_fd, f_out); |
974 | filesfrom_fd = -1; | |
975 | } | |
976 | ||
b9f592fb | 977 | flist = recv_file_list(f_in); |
4c36a13e AT |
978 | if (!flist) { |
979 | rprintf(FERROR,"server_recv: recv_file_list error\n"); | |
65417579 | 980 | exit_cleanup(RERR_FILESELECT); |
7a6421fa | 981 | } |
3ea6e0e7 | 982 | if (inc_recurse && file_total == 1) |
f3d6d480 | 983 | recv_additional_file_list(f_in); |
951e826b WD |
984 | |
985 | if (negated_levels) | |
986 | negate_output_levels(); | |
d9c7edf6 | 987 | |
29fad7a3 | 988 | if (argc > 0) |
7a6421fa | 989 | local_name = get_local_name(flist,argv[0]); |
c627d613 | 990 | |
7c58c991 WD |
991 | /* Now that we know what our destination directory turned out to be, |
992 | * we can sanitize the --link-/copy-/compare-dest args correctly. */ | |
993 | if (sanitize_paths) { | |
ce27f36d WD |
994 | char **dir_p; |
995 | for (dir_p = basis_dir; *dir_p; dir_p++) | |
d48810ba | 996 | *dir_p = sanitize_path(NULL, *dir_p, NULL, curr_dir_depth, SP_DEFAULT); |
ce27f36d | 997 | if (partial_dir) |
d48810ba | 998 | partial_dir = sanitize_path(NULL, partial_dir, NULL, curr_dir_depth, SP_DEFAULT); |
c2c8db91 | 999 | } |
ce27f36d | 1000 | check_alt_basis_dirs(); |
615a5415 | 1001 | |
819bfe45 | 1002 | if (daemon_filter_list.head) { |
a1018691 | 1003 | char **dir_p; |
7b6c5c77 | 1004 | filter_rule_list *elp = &daemon_filter_list; |
c2c8db91 | 1005 | |
a1018691 WD |
1006 | for (dir_p = basis_dir; *dir_p; dir_p++) { |
1007 | char *dir = *dir_p; | |
1008 | if (*dir == '/') | |
1009 | dir += module_dirlen; | |
1df02d13 | 1010 | if (check_filter(elp, FLOG, dir, 1) < 0) |
c2c8db91 WD |
1011 | goto options_rejected; |
1012 | } | |
1013 | if (partial_dir && *partial_dir == '/' | |
1df02d13 | 1014 | && check_filter(elp, FLOG, partial_dir + module_dirlen, 1) < 0) { |
c2c8db91 WD |
1015 | options_rejected: |
1016 | rprintf(FERROR, | |
1017 | "Your options have been rejected by the server.\n"); | |
1018 | exit_cleanup(RERR_SYNTAX); | |
1019 | } | |
7c58c991 WD |
1020 | } |
1021 | ||
f3d6d480 | 1022 | exit_code = do_recv(f_in, f_out, local_name); |
84e6d6fd | 1023 | exit_cleanup(exit_code); |
c627d613 AT |
1024 | } |
1025 | ||
1026 | ||
734a94a2 | 1027 | int child_main(int argc, char *argv[]) |
25d34a5c MP |
1028 | { |
1029 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); | |
734a94a2 | 1030 | return 0; |
25d34a5c MP |
1031 | } |
1032 | ||
1033 | ||
9486289c | 1034 | void start_server(int f_in, int f_out, int argc, char *argv[]) |
366345fe | 1035 | { |
f0359dd0 AT |
1036 | set_nonblocking(f_in); |
1037 | set_nonblocking(f_out); | |
1038 | ||
da3478b2 WD |
1039 | io_set_sock_fds(f_in, f_out); |
1040 | setup_protocol(f_out, f_in); | |
1041 | ||
d04e9c51 | 1042 | if (protocol_version >= 23) |
da3478b2 | 1043 | io_start_multiplex_out(); |
7a6421fa | 1044 | |
7a6421fa | 1045 | if (am_sender) { |
83926d3c | 1046 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
bf26aa22 WD |
1047 | if (need_messages_from_generator) |
1048 | io_start_multiplex_in(); | |
7842418b | 1049 | recv_filter_list(f_in); |
7a6421fa | 1050 | do_server_sender(f_in, f_out, argc, argv); |
07613def | 1051 | } else |
7a6421fa | 1052 | do_server_recv(f_in, f_out, argc, argv); |
7a6421fa | 1053 | exit_cleanup(0); |
366345fe AT |
1054 | } |
1055 | ||
0ba48136 MP |
1056 | |
1057 | /* | |
1058 | * This is called once the connection has been negotiated. It is used | |
1059 | * for rsyncd, remote-shell, and local connections. | |
1060 | */ | |
19b27a48 | 1061 | int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[]) |
9486289c | 1062 | { |
088aac85 | 1063 | struct file_list *flist = NULL; |
84e6d6fd | 1064 | int exit_code = 0, exit_code2 = 0; |
9486289c | 1065 | char *local_name = NULL; |
19b27a48 AT |
1066 | |
1067 | cleanup_child_pid = pid; | |
67a28eb2 | 1068 | if (!read_batch) { |
b9f592fb WD |
1069 | set_nonblocking(f_in); |
1070 | set_nonblocking(f_out); | |
1071 | } | |
f0359dd0 | 1072 | |
da3478b2 | 1073 | io_set_sock_fds(f_in, f_out); |
6d7b6081 AT |
1074 | setup_protocol(f_out,f_in); |
1075 | ||
18882701 WD |
1076 | /* We set our stderr file handle to blocking because ssh might have |
1077 | * set it to non-blocking. This can be particularly troublesome if | |
1078 | * stderr is a clone of stdout, because ssh would have set our stdout | |
1079 | * to non-blocking at the same time (which can easily cause us to lose | |
1080 | * output from our print statements). This kluge shouldn't cause ssh | |
1081 | * any problems for how we use it. Note also that we delayed setting | |
1082 | * this until after the above protocol setup so that we know for sure | |
1083 | * that ssh is done twiddling its file descriptors. */ | |
1084 | set_blocking(STDERR_FILENO); | |
1085 | ||
9486289c | 1086 | if (am_sender) { |
83926d3c | 1087 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
886df221 WD |
1088 | |
1089 | if (always_checksum | |
1090 | && (log_format_has(stdout_format, 'C') | |
1091 | || log_format_has(logfile_format, 'C'))) | |
1092 | sender_keeps_checksum = 1; | |
1093 | ||
f3d6d480 WD |
1094 | if (protocol_version >= 30) |
1095 | io_start_multiplex_out(); | |
1096 | else | |
1097 | io_start_buffering_out(f_out); | |
860236bf | 1098 | if (!filesfrom_host) |
a0a33ee5 | 1099 | set_msg_fd_in(f_in); |
57dee64e | 1100 | send_filter_list(f_out); |
860236bf | 1101 | if (filesfrom_host) |
7c2a9e76 | 1102 | filesfrom_fd = f_in; |
b9f592fb | 1103 | |
e8a96e27 | 1104 | if (write_batch && !am_server) |
b9f592fb | 1105 | start_write_batch(f_out); |
a00628b3 | 1106 | flist = send_file_list(f_out, argc, argv); |
951e826b | 1107 | if (DEBUG_GTE(FLIST, 3)) |
9486289c | 1108 | rprintf(FINFO,"file list sent\n"); |
f3d6d480 WD |
1109 | |
1110 | if (protocol_version >= 23) | |
1111 | io_start_multiplex_in(); | |
e1b3d5c4 | 1112 | |
f1e3656e | 1113 | io_flush(NORMAL_FLUSH); |
f3d6d480 | 1114 | send_files(f_in, f_out); |
f1e3656e | 1115 | io_flush(FULL_FLUSH); |
33c4b445 | 1116 | handle_stats(-1); |
4e0fcd85 | 1117 | if (protocol_version >= 24) |
bc40a305 | 1118 | read_final_goodbye(f_in, f_out); |
9486289c | 1119 | if (pid != -1) { |
951e826b | 1120 | if (DEBUG_GTE(EXIT, 2)) |
08a740ff | 1121 | rprintf(FINFO,"client_run waiting on %d\n", (int) pid); |
f1e3656e | 1122 | io_flush(FULL_FLUSH); |
84e6d6fd | 1123 | wait_process_with_flush(pid, &exit_code); |
9486289c | 1124 | } |
33c4b445 | 1125 | output_summary(); |
c87ae64a | 1126 | io_flush(FULL_FLUSH); |
84e6d6fd | 1127 | exit_cleanup(exit_code); |
9486289c | 1128 | } |
f7632fc6 | 1129 | |
f3d6d480 WD |
1130 | if (!read_batch) { |
1131 | if (protocol_version >= 23) | |
1132 | io_start_multiplex_in(); | |
1133 | if (need_messages_from_generator) | |
1134 | io_start_multiplex_out(); | |
1135 | } | |
bf26aa22 | 1136 | |
57dee64e | 1137 | send_filter_list(read_batch ? -1 : f_out); |
d9c7edf6 | 1138 | |
7c2a9e76 WD |
1139 | if (filesfrom_fd >= 0) { |
1140 | io_set_filesfrom_fds(filesfrom_fd, f_out); | |
1141 | filesfrom_fd = -1; | |
1142 | } | |
1143 | ||
e8a96e27 | 1144 | if (write_batch && !am_server) |
b9f592fb | 1145 | start_write_batch(f_in); |
9486289c | 1146 | flist = recv_file_list(f_in); |
3ea6e0e7 | 1147 | if (inc_recurse && file_total == 1) |
f3d6d480 | 1148 | recv_additional_file_list(f_in); |
d9c7edf6 | 1149 | |
9decb4d2 | 1150 | if (flist && flist->used > 0) { |
9d19f8a5 | 1151 | local_name = get_local_name(flist, argv[0]); |
d9c7edf6 | 1152 | |
ce27f36d | 1153 | check_alt_basis_dirs(); |
615a5415 | 1154 | |
f3d6d480 | 1155 | exit_code2 = do_recv(f_in, f_out, local_name); |
9d19f8a5 WD |
1156 | } else { |
1157 | handle_stats(-1); | |
1158 | output_summary(); | |
1159 | } | |
d9c7edf6 | 1160 | |
9486289c | 1161 | if (pid != -1) { |
951e826b | 1162 | if (DEBUG_GTE(RECV, 1)) |
08a740ff | 1163 | rprintf(FINFO,"client_run2 waiting on %d\n", (int) pid); |
f1e3656e | 1164 | io_flush(FULL_FLUSH); |
84e6d6fd | 1165 | wait_process_with_flush(pid, &exit_code); |
9486289c | 1166 | } |
d9c7edf6 | 1167 | |
84e6d6fd | 1168 | return MAX(exit_code, exit_code2); |
9486289c AT |
1169 | } |
1170 | ||
07613def | 1171 | static int copy_argv(char *argv[]) |
7169bb4a MP |
1172 | { |
1173 | int i; | |
1174 | ||
1175 | for (i = 0; argv[i]; i++) { | |
1176 | if (!(argv[i] = strdup(argv[i]))) { | |
1177 | rprintf (FERROR, "out of memory at %s(%d)\n", | |
1178 | __FILE__, __LINE__); | |
1179 | return RERR_MALLOC; | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | return 0; | |
1184 | } | |
1185 | ||
1186 | ||
c1a04ecb | 1187 | /** |
0ba48136 MP |
1188 | * Start a client for either type of remote connection. Work out |
1189 | * whether the arguments request a remote shell or rsyncd connection, | |
1190 | * and call the appropriate connection function, then run_client. | |
0b4af330 MP |
1191 | * |
1192 | * Calls either start_socket_client (for sockets) or do_cmd and | |
1193 | * client_run (for ssh). | |
c1a04ecb | 1194 | **/ |
fc8a6b97 | 1195 | static int start_client(int argc, char *argv[]) |
5d6bcd44 | 1196 | { |
f7e5068d WD |
1197 | char *p, *shell_machine = NULL, *shell_user = NULL; |
1198 | char **remote_argv; | |
1199 | int remote_argc; | |
1200 | int f_in, f_out; | |
19b27a48 AT |
1201 | int ret; |
1202 | pid_t pid; | |
7169bb4a MP |
1203 | |
1204 | /* Don't clobber argv[] so that ps(1) can still show the right | |
d9c7edf6 | 1205 | * command line. */ |
f7e5068d WD |
1206 | if ((ret = copy_argv(argv)) != 0) |
1207 | return ret; | |
5d6bcd44 | 1208 | |
d16c245f | 1209 | if (!read_batch) { /* for read_batch, NO source is specified */ |
f7e5068d WD |
1210 | char *path = check_for_hostspec(argv[0], &shell_machine, &rsync_port); |
1211 | if (path) { /* source is remote */ | |
a960239f WD |
1212 | char *dummy_host; |
1213 | int dummy_port = 0; | |
f7e5068d WD |
1214 | *argv = path; |
1215 | remote_argv = argv; | |
1216 | remote_argc = argc; | |
1217 | argv += argc - 1; | |
1218 | if (argc == 1 || **argv == ':') | |
1219 | argc = 0; /* no dest arg */ | |
a960239f | 1220 | else if (check_for_hostspec(*argv, &dummy_host, &dummy_port)) { |
9425918d WD |
1221 | rprintf(FERROR, |
1222 | "The source and destination cannot both be remote.\n"); | |
1223 | exit_cleanup(RERR_SYNTAX); | |
f7e5068d WD |
1224 | } else { |
1225 | remote_argc--; /* don't count dest */ | |
1226 | argc = 1; | |
9425918d | 1227 | } |
860236bf WD |
1228 | if (filesfrom_host && *filesfrom_host |
1229 | && strcmp(filesfrom_host, shell_machine) != 0) { | |
7c2a9e76 | 1230 | rprintf(FERROR, |
50b31539 | 1231 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
1232 | exit_cleanup(RERR_SYNTAX); |
1233 | } | |
42ccb4c0 | 1234 | am_sender = 0; |
e208631a WD |
1235 | if (rsync_port) |
1236 | daemon_over_rsh = shell_cmd ? 1 : -1; | |
42ccb4c0 WD |
1237 | } else { /* source is local, check dest arg */ |
1238 | am_sender = 1; | |
1239 | ||
f7e5068d | 1240 | if (argc > 1) { |
ee8e2b15 | 1241 | p = argv[--argc]; |
f7e5068d WD |
1242 | remote_argv = argv + argc; |
1243 | } else { | |
1244 | static char *dotarg[1] = { "." }; | |
1245 | p = dotarg[0]; | |
1246 | remote_argv = dotarg; | |
d9c7edf6 | 1247 | } |
f7e5068d | 1248 | remote_argc = 1; |
a125c82a | 1249 | |
f7e5068d WD |
1250 | path = check_for_hostspec(p, &shell_machine, &rsync_port); |
1251 | if (path && filesfrom_host && *filesfrom_host | |
860236bf | 1252 | && strcmp(filesfrom_host, shell_machine) != 0) { |
7c2a9e76 | 1253 | rprintf(FERROR, |
50b31539 | 1254 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
1255 | exit_cleanup(RERR_SYNTAX); |
1256 | } | |
f7e5068d | 1257 | if (!path) { /* no hostspec found, so src & dest are local */ |
d9c7edf6 | 1258 | local_server = 1; |
860236bf | 1259 | if (filesfrom_host) { |
7c2a9e76 | 1260 | rprintf(FERROR, |
50b31539 | 1261 | "--files-from cannot be remote when the transfer is local\n"); |
7c2a9e76 WD |
1262 | exit_cleanup(RERR_SYNTAX); |
1263 | } | |
860236bf | 1264 | shell_machine = NULL; |
f7e5068d WD |
1265 | } else { /* hostspec was found, so dest is remote */ |
1266 | argv[argc] = path; | |
1267 | if (rsync_port) | |
1268 | daemon_over_rsh = shell_cmd ? 1 : -1; | |
1269 | } | |
5d6bcd44 | 1270 | } |
d16c245f | 1271 | } else { /* read_batch */ |
d9c7edf6 | 1272 | local_server = 1; |
f7e5068d | 1273 | if (check_for_hostspec(argv[argc-1], &shell_machine, &rsync_port)) { |
b9f592fb WD |
1274 | rprintf(FERROR, "remote destination is not allowed with --read-batch\n"); |
1275 | exit_cleanup(RERR_SYNTAX); | |
1276 | } | |
0a23e336 WD |
1277 | remote_argv = argv += argc - 1; |
1278 | remote_argc = argc = 1; | |
6902ed17 MP |
1279 | } |
1280 | ||
f7e5068d | 1281 | if (am_sender) { |
a960239f WD |
1282 | char *dummy_host; |
1283 | int dummy_port = rsync_port; | |
f7e5068d WD |
1284 | int i; |
1285 | /* For local source, extra source args must not have hostspec. */ | |
1286 | for (i = 1; i < argc; i++) { | |
a960239f | 1287 | if (check_for_hostspec(argv[i], &dummy_host, &dummy_port)) { |
f7e5068d WD |
1288 | rprintf(FERROR, "Unexpected remote arg: %s\n", argv[i]); |
1289 | exit_cleanup(RERR_SYNTAX); | |
1290 | } | |
1291 | } | |
1292 | } else { | |
a960239f WD |
1293 | char *dummy_host; |
1294 | int dummy_port = rsync_port; | |
f7e5068d | 1295 | int i; |
a960239f WD |
1296 | /* For remote source, any extra source args must have either |
1297 | * the same hostname or an empty hostname. */ | |
f7e5068d | 1298 | for (i = 1; i < remote_argc; i++) { |
a960239f WD |
1299 | char *arg = check_for_hostspec(remote_argv[i], &dummy_host, &dummy_port); |
1300 | if (!arg) { | |
f7e5068d WD |
1301 | rprintf(FERROR, "Unexpected local arg: %s\n", remote_argv[i]); |
1302 | rprintf(FERROR, "If arg is a remote file/dir, prefix it with a colon (:).\n"); | |
1303 | exit_cleanup(RERR_SYNTAX); | |
1304 | } | |
a960239f WD |
1305 | if (*dummy_host && strcmp(dummy_host, shell_machine) != 0) { |
1306 | rprintf(FERROR, "All source args must come from the same machine.\n"); | |
1307 | exit_cleanup(RERR_SYNTAX); | |
1308 | } | |
1309 | if (rsync_port != dummy_port) { | |
1310 | if (!rsync_port || !dummy_port) | |
1311 | rprintf(FERROR, "All source args must use the same hostspec format.\n"); | |
1312 | else | |
1313 | rprintf(FERROR, "All source args must use the same port number.\n"); | |
1314 | exit_cleanup(RERR_SYNTAX); | |
1315 | } | |
1316 | remote_argv[i] = arg; | |
f7e5068d | 1317 | } |
e208631a WD |
1318 | } |
1319 | ||
1320 | if (daemon_over_rsh < 0) | |
f7e5068d | 1321 | return start_socket_client(shell_machine, remote_argc, remote_argv, argc, argv); |
e208631a | 1322 | |
a39da29a | 1323 | if (password_file && !daemon_over_rsh) { |
327c559a WD |
1324 | rprintf(FERROR, "The --password-file option may only be " |
1325 | "used when accessing an rsync daemon.\n"); | |
a39da29a WD |
1326 | exit_cleanup(RERR_SYNTAX); |
1327 | } | |
1328 | ||
ba22c9e2 WD |
1329 | if (connect_timeout) { |
1330 | rprintf(FERROR, "The --contimeout option may only be " | |
1331 | "used when connecting to an rsync daemon.\n"); | |
1332 | exit_cleanup(RERR_SYNTAX); | |
1333 | } | |
1334 | ||
5d6bcd44 | 1335 | if (shell_machine) { |
6fc048f4 | 1336 | p = strrchr(shell_machine,'@'); |
5d6bcd44 AT |
1337 | if (p) { |
1338 | *p = 0; | |
1339 | shell_user = shell_machine; | |
1340 | shell_machine = p+1; | |
1341 | } | |
1342 | } | |
1343 | ||
951e826b | 1344 | if (DEBUG_GTE(CMD, 2)) { |
9486289c | 1345 | rprintf(FINFO,"cmd=%s machine=%s user=%s path=%s\n", |
f7e5068d WD |
1346 | NS(shell_cmd), NS(shell_machine), NS(shell_user), |
1347 | remote_argv ? NS(remote_argv[0]) : ""); | |
5d6bcd44 | 1348 | } |
d9c7edf6 | 1349 | |
f7e5068d WD |
1350 | pid = do_cmd(shell_cmd, shell_machine, shell_user, remote_argv, remote_argc, |
1351 | &f_in, &f_out); | |
75aeac44 WD |
1352 | |
1353 | /* if we're running an rsync server on the remote host over a | |
9af87151 | 1354 | * remote shell command, we need to do the RSYNCD protocol first */ |
75aeac44 WD |
1355 | if (daemon_over_rsh) { |
1356 | int tmpret; | |
f7e5068d | 1357 | tmpret = start_inband_exchange(f_in, f_out, shell_user, remote_argc, remote_argv); |
75aeac44 WD |
1358 | if (tmpret < 0) |
1359 | return tmpret; | |
1360 | } | |
1361 | ||
fc8a6b97 AT |
1362 | ret = client_run(f_in, f_out, pid, argc, argv); |
1363 | ||
1364 | fflush(stdout); | |
1365 | fflush(stderr); | |
1366 | ||
1367 | return ret; | |
5d6bcd44 AT |
1368 | } |
1369 | ||
366345fe | 1370 | |
067669da WD |
1371 | static RETSIGTYPE sigusr1_handler(UNUSED(int val)) |
1372 | { | |
6bf32edb | 1373 | exit_cleanup(RERR_SIGNAL1); |
82306bf6 AT |
1374 | } |
1375 | ||
067669da WD |
1376 | static RETSIGTYPE sigusr2_handler(UNUSED(int val)) |
1377 | { | |
33c4b445 WD |
1378 | if (!am_server) |
1379 | output_summary(); | |
40df65fd | 1380 | close_all(); |
3f0211b6 | 1381 | if (got_xfer_error) |
33c4b445 | 1382 | _exit(RERR_PARTIAL); |
8b35435f AT |
1383 | _exit(0); |
1384 | } | |
1385 | ||
6d59ac19 | 1386 | RETSIGTYPE remember_children(UNUSED(int val)) |
067669da | 1387 | { |
029c1713 | 1388 | #ifdef WNOHANG |
ee7118a8 DD |
1389 | int cnt, status; |
1390 | pid_t pid; | |
1391 | /* An empty waitpid() loop was put here by Tridge and we could never | |
d9c7edf6 | 1392 | * get him to explain why he put it in, so rather than taking it |
ee7118a8 DD |
1393 | * out we're instead saving the child exit statuses for later use. |
1394 | * The waitpid() loop presumably eliminates all possibility of leaving | |
97d8e709 | 1395 | * zombie children, maybe that's why he did it. */ |
ee7118a8 | 1396 | while ((pid = waitpid(-1, &status, WNOHANG)) > 0) { |
9af87151 WD |
1397 | /* save the child's exit status */ |
1398 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { | |
1399 | if (pid_stat_table[cnt].pid == 0) { | |
1400 | pid_stat_table[cnt].pid = pid; | |
1401 | pid_stat_table[cnt].status = status; | |
1402 | break; | |
1403 | } | |
1404 | } | |
ee7118a8 | 1405 | } |
029c1713 | 1406 | #endif |
8261af74 | 1407 | #ifndef HAVE_SIGACTION |
6d59ac19 | 1408 | signal(SIGCHLD, remember_children); |
60ee01f5 | 1409 | #endif |
19b27a48 AT |
1410 | } |
1411 | ||
c0531332 MP |
1412 | |
1413 | /** | |
1414 | * This routine catches signals and tries to send them to gdb. | |
1415 | * | |
1416 | * Because it's called from inside a signal handler it ought not to | |
1417 | * use too many library routines. | |
1418 | * | |
1419 | * @todo Perhaps use "screen -X" instead/as well, to help people | |
1420 | * debugging without easy access to X. Perhaps use an environment | |
1421 | * variable, or just call a script? | |
1422 | * | |
1423 | * @todo The /proc/ magic probably only works on Linux (and | |
1424 | * Solaris?) Can we be more portable? | |
1425 | **/ | |
1426 | #ifdef MAINTAINER_MODE | |
4fdc39dd MP |
1427 | const char *get_panic_action(void) |
1428 | { | |
1429 | const char *cmd_fmt = getenv("RSYNC_PANIC_ACTION"); | |
1430 | ||
1431 | if (cmd_fmt) | |
1432 | return cmd_fmt; | |
1433 | else | |
1434 | return "xterm -display :0 -T Panic -n Panic " | |
1435 | "-e gdb /proc/%d/exe %d"; | |
1436 | } | |
1437 | ||
1438 | ||
9fb3f7a9 MP |
1439 | /** |
1440 | * Handle a fatal signal by launching a debugger, controlled by $RSYNC_PANIC_ACTION. | |
1441 | * | |
1442 | * This signal handler is only installed if we were configured with | |
1443 | * --enable-maintainer-mode. Perhaps it should always be on and we | |
1444 | * should just look at the environment variable, but I'm a bit leery | |
1445 | * of a signal sending us into a busy loop. | |
1446 | **/ | |
067669da | 1447 | static RETSIGTYPE rsync_panic_handler(UNUSED(int whatsig)) |
c0531332 MP |
1448 | { |
1449 | char cmd_buf[300]; | |
1450 | int ret; | |
4fdc39dd | 1451 | |
83078af5 WD |
1452 | snprintf(cmd_buf, sizeof cmd_buf, get_panic_action(), |
1453 | getpid(), getpid()); | |
c0531332 MP |
1454 | |
1455 | /* Unless we failed to execute gdb, we allow the process to | |
1456 | * continue. I'm not sure if that's right. */ | |
1457 | ret = system(cmd_buf); | |
1458 | if (ret) | |
1459 | _exit(ret); | |
1460 | } | |
1461 | #endif | |
1462 | ||
1463 | ||
5d6bcd44 | 1464 | int main(int argc,char *argv[]) |
d9c7edf6 | 1465 | { |
ff81e809 | 1466 | int ret; |
66a9dc96 WD |
1467 | int orig_argc = argc; |
1468 | char **orig_argv = argv; | |
8261af74 WD |
1469 | #ifdef HAVE_SIGACTION |
1470 | # ifdef HAVE_SIGPROCMASK | |
60ee01f5 | 1471 | sigset_t sigmask; |
5d6bcd44 | 1472 | |
60ee01f5 | 1473 | sigemptyset(&sigmask); |
8261af74 | 1474 | # endif |
60ee01f5 WD |
1475 | sigact.sa_flags = SA_NOCLDSTOP; |
1476 | #endif | |
1477 | SIGACTMASK(SIGUSR1, sigusr1_handler); | |
1478 | SIGACTMASK(SIGUSR2, sigusr2_handler); | |
6d59ac19 | 1479 | SIGACTMASK(SIGCHLD, remember_children); |
c0531332 | 1480 | #ifdef MAINTAINER_MODE |
60ee01f5 WD |
1481 | SIGACTMASK(SIGSEGV, rsync_panic_handler); |
1482 | SIGACTMASK(SIGFPE, rsync_panic_handler); | |
1483 | SIGACTMASK(SIGABRT, rsync_panic_handler); | |
1484 | SIGACTMASK(SIGBUS, rsync_panic_handler); | |
1485 | #endif | |
5d6bcd44 | 1486 | |
7a6421fa | 1487 | starttime = time(NULL); |
19284e2e | 1488 | our_uid = MY_UID(); |
3b83a220 | 1489 | our_gid = MY_GID(); |
19284e2e | 1490 | am_root = our_uid == 0; |
c627d613 | 1491 | |
a800434a AT |
1492 | memset(&stats, 0, sizeof(stats)); |
1493 | ||
df5e03da AT |
1494 | if (argc < 2) { |
1495 | usage(FERROR); | |
65417579 | 1496 | exit_cleanup(RERR_SYNTAX); |
df5e03da AT |
1497 | } |
1498 | ||
7a6421fa | 1499 | /* we set a 0 umask so that correct file permissions can be |
9af87151 | 1500 | * carried across */ |
05278935 | 1501 | orig_umask = umask(0); |
5d6bcd44 | 1502 | |
eb598fac WD |
1503 | #if defined CONFIG_LOCALE && defined HAVE_SETLOCALE |
1504 | setlocale(LC_CTYPE, ""); | |
1505 | #endif | |
1506 | ||
53936ef9 | 1507 | if (!parse_arguments(&argc, (const char ***) &argv)) { |
d9c7edf6 WD |
1508 | /* FIXME: We ought to call the same error-handling |
1509 | * code here, rather than relying on getopt. */ | |
50135767 | 1510 | option_error(); |
65417579 | 1511 | exit_cleanup(RERR_SYNTAX); |
b11ed3b1 | 1512 | } |
5d6bcd44 | 1513 | |
60ee01f5 WD |
1514 | SIGACTMASK(SIGINT, sig_int); |
1515 | SIGACTMASK(SIGHUP, sig_int); | |
1516 | SIGACTMASK(SIGTERM, sig_int); | |
1517 | #if defined HAVE_SIGACTION && HAVE_SIGPROCMASK | |
1518 | sigprocmask(SIG_UNBLOCK, &sigmask, NULL); | |
1519 | #endif | |
6b83141d | 1520 | |
34758d5c MP |
1521 | /* Ignore SIGPIPE; we consistently check error codes and will |
1522 | * see the EPIPE. */ | |
60ee01f5 | 1523 | SIGACTION(SIGPIPE, SIG_IGN); |
55e54e46 WD |
1524 | #ifdef SIGXFSZ |
1525 | SIGACTION(SIGXFSZ, SIG_IGN); | |
1526 | #endif | |
34758d5c | 1527 | |
29a89172 | 1528 | /* Initialize change_dir() here because on some old systems getcwd |
9af87151 WD |
1529 | * (implemented by forking "pwd" and reading its output) doesn't |
1530 | * work when there are other child processes. Also, on all systems | |
1531 | * that implement getcwd that way "pwd" can't be found after chroot. */ | |
29a89172 | 1532 | change_dir(NULL, CD_NORMAL); |
c226b7c2 | 1533 | |
44e9e221 WD |
1534 | init_flist(); |
1535 | ||
e8a96e27 | 1536 | if ((write_batch || read_batch) && !am_server) { |
b9f592fb | 1537 | if (write_batch) |
66a9dc96 | 1538 | write_batch_shell_file(orig_argc, orig_argv, argc); |
b9f592fb | 1539 | |
dbbab0c4 WD |
1540 | if (read_batch && strcmp(batch_name, "-") == 0) |
1541 | batch_fd = STDIN_FILENO; | |
1542 | else { | |
1543 | batch_fd = do_open(batch_name, | |
b9f592fb WD |
1544 | write_batch ? O_WRONLY | O_CREAT | O_TRUNC |
1545 | : O_RDONLY, S_IRUSR | S_IWUSR); | |
dbbab0c4 | 1546 | } |
b9f592fb WD |
1547 | if (batch_fd < 0) { |
1548 | rsyserr(FERROR, errno, "Batch file %s open error", | |
71903f60 | 1549 | full_fname(batch_name)); |
b9f592fb WD |
1550 | exit_cleanup(RERR_FILEIO); |
1551 | } | |
9459290a WD |
1552 | if (read_batch) |
1553 | read_stream_flags(batch_fd); | |
e10664c5 WD |
1554 | else |
1555 | write_stream_flags(batch_fd); | |
6902ed17 | 1556 | } |
e8a96e27 WD |
1557 | if (write_batch < 0) |
1558 | dry_run = 1; | |
6902ed17 | 1559 | |
44c4492a WD |
1560 | if (am_server) { |
1561 | #ifdef ICONV_CONST | |
b61665d5 | 1562 | setup_iconv(); |
44c4492a WD |
1563 | #endif |
1564 | } else if (am_daemon) | |
7a6421fa | 1565 | return daemon_main(); |
f0fca04e | 1566 | |
f7e5068d WD |
1567 | if (am_server && protect_args) { |
1568 | char buf[MAXPATHLEN]; | |
71605b0f | 1569 | protect_args = 2; |
f7e5068d | 1570 | read_args(STDIN_FILENO, NULL, buf, sizeof buf, 1, &argv, &argc, NULL); |
53936ef9 | 1571 | if (!parse_arguments(&argc, (const char ***) &argv)) { |
f7e5068d WD |
1572 | option_error(); |
1573 | exit_cleanup(RERR_SYNTAX); | |
1574 | } | |
1575 | } | |
1576 | ||
08ac228f AT |
1577 | if (argc < 1) { |
1578 | usage(FERROR); | |
65417579 | 1579 | exit_cleanup(RERR_SYNTAX); |
08ac228f AT |
1580 | } |
1581 | ||
7a6421fa | 1582 | if (am_server) { |
f0359dd0 AT |
1583 | set_nonblocking(STDIN_FILENO); |
1584 | set_nonblocking(STDOUT_FILENO); | |
75aeac44 WD |
1585 | if (am_daemon) |
1586 | return start_daemon(STDIN_FILENO, STDOUT_FILENO); | |
7a6421fa AT |
1587 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); |
1588 | } | |
c627d613 | 1589 | |
ff81e809 | 1590 | ret = start_client(argc, argv); |
d9c7edf6 | 1591 | if (ret == -1) |
9098bbf3 | 1592 | exit_cleanup(RERR_STARTCLIENT); |
088aac85 | 1593 | else |
9098bbf3 MP |
1594 | exit_cleanup(ret); |
1595 | ||
0f5a04e3 | 1596 | return ret; |
c627d613 | 1597 | } |