Commit | Line | Data |
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0ba48136 | 1 | /* -*- c-file-style: "linux" -*- |
d9c7edf6 | 2 | |
50135767 | 3 | Copyright (C) 1996-2001 by Andrew Tridgell <tridge@samba.org> |
c627d613 | 4 | Copyright (C) Paul Mackerras 1996 |
e5a2b854 | 5 | Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org> |
d9c7edf6 | 6 | |
c627d613 AT |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
d9c7edf6 | 11 | |
c627d613 AT |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
d9c7edf6 | 16 | |
c627d613 AT |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | */ | |
21 | ||
22 | #include "rsync.h" | |
23 | ||
f0fca04e | 24 | time_t starttime = 0; |
a800434a | 25 | |
b35d0d8e | 26 | extern struct stats stats; |
32eda096 | 27 | extern int am_root; |
d9c7edf6 WD |
28 | extern int am_server; |
29 | extern int am_sender; | |
b695f242 | 30 | extern int am_generator; |
d9c7edf6 | 31 | extern int am_daemon; |
7a6421fa | 32 | extern int verbose; |
32eda096 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; |
48a1ff0d | 48 | extern int keep_dirs; |
83926d3c | 49 | extern int keep_dirlinks; |
32eda096 | 50 | extern int preserve_hard_links; |
d04e9c51 | 51 | extern int protocol_version; |
32eda096 WD |
52 | extern int recurse; |
53 | extern int relative_paths; | |
54 | extern int rsync_port; | |
b1df18d7 | 55 | extern int whole_file; |
32eda096 WD |
56 | extern int read_batch; |
57 | extern int write_batch; | |
b9f592fb | 58 | extern int batch_fd; |
c0d8e84c | 59 | extern int batch_gen_fd; |
32eda096 WD |
60 | extern int filesfrom_fd; |
61 | extern pid_t cleanup_child_pid; | |
62 | extern char *files_from; | |
63 | extern char *remote_filesfrom_file; | |
7162c65d | 64 | extern char *partial_dir; |
c3fad2e2 | 65 | extern char *basis_dir[]; |
32eda096 WD |
66 | extern char *rsync_path; |
67 | extern char *shell_cmd; | |
9b3318b0 | 68 | extern char *batch_name; |
c627d613 | 69 | |
b695f242 | 70 | |
ee7118a8 DD |
71 | /* there's probably never more than at most 2 outstanding child processes, |
72 | * but set it higher just in case. | |
73 | */ | |
74 | #define MAXCHILDPROCS 5 | |
75 | ||
76 | struct pid_status { | |
77 | pid_t pid; | |
78 | int status; | |
79 | } pid_stat_table[MAXCHILDPROCS]; | |
80 | ||
e5a2b854 | 81 | static void show_malloc_stats(void); |
82980a23 AT |
82 | |
83 | /**************************************************************************** | |
84 | wait for a process to exit, calling io_flush while waiting | |
85 | ****************************************************************************/ | |
86 | void wait_process(pid_t pid, int *status) | |
87 | { | |
ee7118a8 DD |
88 | pid_t waited_pid; |
89 | int cnt; | |
90 | ||
91 | while ((waited_pid = waitpid(pid, status, WNOHANG)) == 0) { | |
a24c6870 | 92 | msleep(20); |
f1e3656e | 93 | io_flush(FULL_FLUSH); |
82980a23 | 94 | } |
d9c7edf6 | 95 | |
6fb812f7 | 96 | if (waited_pid == -1 && errno == ECHILD) { |
ee7118a8 DD |
97 | /* status of requested child no longer available. |
98 | * check to see if it was processed by the sigchld_handler. | |
99 | */ | |
100 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { | |
101 | if (pid == pid_stat_table[cnt].pid) { | |
102 | *status = pid_stat_table[cnt].status; | |
103 | pid_stat_table[cnt].pid = 0; | |
104 | break; | |
105 | } | |
106 | } | |
107 | } | |
108 | ||
d9c7edf6 WD |
109 | /* TODO: If the child exited on a signal, then log an |
110 | * appropriate error message. Perhaps we should also accept a | |
111 | * message describing the purpose of the child. Also indicate | |
112 | * this to the caller so that thhey know something went | |
113 | * wrong. */ | |
82980a23 AT |
114 | *status = WEXITSTATUS(*status); |
115 | } | |
116 | ||
b9f592fb WD |
117 | /* This function gets called from all 3 processes. We want the client side |
118 | * to actually output the text, but the sender is the only process that has | |
119 | * all the stats we need. So, if we're a client sender, we do the report. | |
120 | * If we're a server sender, we write the stats on the supplied fd. If | |
121 | * we're the client receiver we read the stats from the supplied fd and do | |
122 | * the report. All processes might also generate a set of debug stats, if | |
123 | * the verbose level is high enough (this is the only thing that the | |
124 | * generator process and the server receiver ever do here). */ | |
c627d613 AT |
125 | static void report(int f) |
126 | { | |
b9f592fb WD |
127 | /* Cache two stats because the read/write code can change it. */ |
128 | int64 total_read = stats.total_read; | |
129 | int64 total_written = stats.total_written; | |
7a6421fa | 130 | time_t t = time(NULL); |
7a6421fa | 131 | |
7bb7058e | 132 | if (do_stats && verbose > 1) { |
5c15e29f | 133 | /* These come out from every process */ |
7bb7058e | 134 | show_malloc_stats(); |
86943126 | 135 | show_flist_stats(); |
5c15e29f MP |
136 | } |
137 | ||
e5fbaa71 S |
138 | if (am_generator) |
139 | return; | |
140 | ||
248fbb8c | 141 | if (am_daemon) { |
a9766ef1 | 142 | log_exit(0, __FILE__, __LINE__); |
83926d3c WD |
143 | if (f == -1 || !am_sender) |
144 | return; | |
248fbb8c AT |
145 | } |
146 | ||
e19452a9 | 147 | if (am_server) { |
3e491682 | 148 | if (am_sender) { |
b9f592fb WD |
149 | write_longint(f, total_read); |
150 | write_longint(f, total_written); | |
151 | write_longint(f, stats.total_size); | |
e19452a9 | 152 | } |
7a6421fa AT |
153 | return; |
154 | } | |
e19452a9 DD |
155 | |
156 | /* this is the client */ | |
d9c7edf6 | 157 | |
3e491682 | 158 | if (!am_sender) { |
58c5c245 WD |
159 | /* Read the first two in opposite order because the meaning of |
160 | * read/write swaps when switching from sender to receiver. */ | |
b9f592fb WD |
161 | total_written = read_longint(f); |
162 | total_read = read_longint(f); | |
a800434a | 163 | stats.total_size = read_longint(f); |
b9f592fb WD |
164 | } else if (write_batch) { |
165 | /* The --read-batch process is going to be a client | |
166 | * receiver, so we need to give it the stats. */ | |
167 | write_longint(batch_fd, total_read); | |
168 | write_longint(batch_fd, total_written); | |
169 | write_longint(batch_fd, stats.total_size); | |
a800434a AT |
170 | } |
171 | ||
172 | if (do_stats) { | |
1f658d42 | 173 | rprintf(FINFO,"\nNumber of files: %d\n", stats.num_files); |
d9c7edf6 WD |
174 | rprintf(FINFO,"Number of files transferred: %d\n", |
175 | stats.num_transferred_files); | |
176 | rprintf(FINFO,"Total file size: %.0f bytes\n", | |
177 | (double)stats.total_size); | |
178 | rprintf(FINFO,"Total transferred file size: %.0f bytes\n", | |
179 | (double)stats.total_transferred_size); | |
180 | rprintf(FINFO,"Literal data: %.0f bytes\n", | |
181 | (double)stats.literal_data); | |
182 | rprintf(FINFO,"Matched data: %.0f bytes\n", | |
183 | (double)stats.matched_data); | |
1f658d42 | 184 | rprintf(FINFO,"File list size: %d\n", stats.flist_size); |
4de2a174 | 185 | rprintf(FINFO,"Total bytes sent: %.0f\n", |
b9f592fb | 186 | (double)total_written); |
4de2a174 | 187 | rprintf(FINFO,"Total bytes received: %.0f\n", |
b9f592fb | 188 | (double)total_read); |
7a6421fa | 189 | } |
d9c7edf6 | 190 | |
e19452a9 | 191 | if (verbose || do_stats) { |
b9f592fb | 192 | rprintf(FINFO, |
4de2a174 | 193 | "\nsent %.0f bytes received %.0f bytes %.2f bytes/sec\n", |
b9f592fb WD |
194 | (double)total_written, (double)total_read, |
195 | (total_written + total_read)/(0.5 + (t - starttime))); | |
196 | rprintf(FINFO, "total size is %.0f speedup is %.2f\n", | |
d9c7edf6 | 197 | (double)stats.total_size, |
b9f592fb | 198 | (double)stats.total_size / (total_written+total_read)); |
e19452a9 | 199 | } |
fc8a6b97 AT |
200 | |
201 | fflush(stdout); | |
202 | fflush(stderr); | |
c627d613 AT |
203 | } |
204 | ||
205 | ||
e5a2b854 MP |
206 | /** |
207 | * If our C library can get malloc statistics, then show them to FINFO | |
208 | **/ | |
209 | static void show_malloc_stats(void) | |
210 | { | |
211 | #ifdef HAVE_MALLINFO | |
212 | struct mallinfo mi; | |
213 | ||
214 | mi = mallinfo(); | |
215 | ||
ce672562 | 216 | rprintf(FINFO, "\n" RSYNC_NAME "[%d] (%s%s%s) heap statistics:\n", |
5c15e29f MP |
217 | getpid(), |
218 | am_server ? "server " : "", | |
219 | am_daemon ? "daemon " : "", | |
b695f242 | 220 | who_am_i()); |
e5a2b854 MP |
221 | rprintf(FINFO, " arena: %10d (bytes from sbrk)\n", mi.arena); |
222 | rprintf(FINFO, " ordblks: %10d (chunks not in use)\n", mi.ordblks); | |
223 | rprintf(FINFO, " smblks: %10d\n", mi.smblks); | |
224 | rprintf(FINFO, " hblks: %10d (chunks from mmap)\n", mi.hblks); | |
225 | rprintf(FINFO, " hblkhd: %10d (bytes from mmap)\n", mi.hblkhd); | |
7b74bba1 S |
226 | rprintf(FINFO, " allmem: %10d (bytes from sbrk + mmap)\n", |
227 | mi.arena + mi.hblkhd); | |
e5a2b854 MP |
228 | rprintf(FINFO, " usmblks: %10d\n", mi.usmblks); |
229 | rprintf(FINFO, " fsmblks: %10d\n", mi.fsmblks); | |
230 | rprintf(FINFO, " uordblks: %10d (bytes used)\n", mi.uordblks); | |
231 | rprintf(FINFO, " fordblks: %10d (bytes free)\n", mi.fordblks); | |
232 | rprintf(FINFO, " keepcost: %10d (bytes in releasable chunk)\n", mi.keepcost); | |
233 | #endif /* HAVE_MALLINFO */ | |
234 | } | |
235 | ||
236 | ||
0882faa2 | 237 | /* Start the remote shell. cmd may be NULL to use the default. */ |
6c2e5b56 WD |
238 | static pid_t do_cmd(char *cmd, char *machine, char *user, char *path, |
239 | int *f_in, int *f_out) | |
c627d613 | 240 | { |
6c2e5b56 | 241 | int i, argc = 0; |
887e553f | 242 | char *args[MAX_ARGS]; |
19b27a48 | 243 | pid_t ret; |
6c2e5b56 | 244 | char *tok, *dir = NULL; |
bb4aa89c | 245 | int dash_l_set = 0; |
366345fe | 246 | |
088aac85 | 247 | if (!read_batch && !local_server) { |
9af87151 | 248 | char *rsh_env = getenv(RSYNC_RSH_ENV); |
366345fe | 249 | if (!cmd) |
9af87151 | 250 | cmd = rsh_env; |
366345fe AT |
251 | if (!cmd) |
252 | cmd = RSYNC_RSH; | |
253 | cmd = strdup(cmd); | |
d9c7edf6 | 254 | if (!cmd) |
366345fe AT |
255 | goto oom; |
256 | ||
887e553f | 257 | for (tok = strtok(cmd, " "); tok; tok = strtok(NULL, " ")) { |
e7a392c7 WD |
258 | /* Comparison leaves rooms for server_options(). */ |
259 | if (argc >= MAX_ARGS - 100) { | |
260 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
887e553f WD |
261 | exit_cleanup(RERR_SYNTAX); |
262 | } | |
366345fe | 263 | args[argc++] = tok; |
887e553f | 264 | } |
c627d613 | 265 | |
d9c7edf6 | 266 | /* check to see if we've already been given '-l user' in |
9af87151 | 267 | * the remote-shell command */ |
bb4aa89c WD |
268 | for (i = 0; i < argc-1; i++) { |
269 | if (!strcmp(args[i], "-l") && args[i+1][0] != '-') | |
270 | dash_l_set = 1; | |
271 | } | |
272 | ||
7b8356d0 | 273 | #if HAVE_REMSH |
366345fe AT |
274 | /* remsh (on HPUX) takes the arguments the other way around */ |
275 | args[argc++] = machine; | |
bb4aa89c | 276 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
277 | args[argc++] = "-l"; |
278 | args[argc++] = user; | |
279 | } | |
7b8356d0 | 280 | #else |
bb4aa89c | 281 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
282 | args[argc++] = "-l"; |
283 | args[argc++] = user; | |
284 | } | |
285 | args[argc++] = machine; | |
7b8356d0 | 286 | #endif |
c627d613 | 287 | |
366345fe | 288 | args[argc++] = rsync_path; |
c627d613 | 289 | |
9af87151 | 290 | if (blocking_io < 0) { |
90e22f4b WD |
291 | char *cp; |
292 | if ((cp = strrchr(cmd, '/')) != NULL) | |
293 | cp++; | |
294 | else | |
295 | cp = cmd; | |
296 | if (strcmp(cp, "rsh") == 0 || strcmp(cp, "remsh") == 0) | |
297 | blocking_io = 1; | |
66b71163 | 298 | } |
e384bfbd | 299 | |
93689aa5 | 300 | server_options(args,&argc); |
e7a392c7 WD |
301 | |
302 | if (argc >= MAX_ARGS - 2) { | |
303 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
304 | exit_cleanup(RERR_SYNTAX); | |
305 | } | |
366345fe | 306 | } |
c627d613 | 307 | |
366345fe | 308 | args[argc++] = "."; |
76076c4b | 309 | |
d9c7edf6 | 310 | if (!daemon_over_rsh && path && *path) |
366345fe | 311 | args[argc++] = path; |
c627d613 | 312 | |
366345fe | 313 | args[argc] = NULL; |
c627d613 | 314 | |
366345fe | 315 | if (verbose > 3) { |
9486289c | 316 | rprintf(FINFO,"cmd="); |
e7a392c7 | 317 | for (i = 0; i < argc; i++) |
9486289c AT |
318 | rprintf(FINFO,"%s ",args[i]); |
319 | rprintf(FINFO,"\n"); | |
366345fe AT |
320 | } |
321 | ||
c0d8e84c WD |
322 | if (read_batch) { |
323 | int from_gen_pipe[2]; | |
324 | if (fd_pair(from_gen_pipe) < 0) { | |
325 | rsyserr(FERROR, errno, "pipe"); | |
326 | exit_cleanup(RERR_IPC); | |
327 | } | |
328 | batch_gen_fd = from_gen_pipe[0]; | |
329 | *f_out = from_gen_pipe[1]; | |
330 | *f_in = batch_fd; | |
331 | ret = -1; /* no child pid */ | |
332 | } else if (local_server) { | |
b1df18d7 WD |
333 | /* If the user didn't request --[no-]whole-file, force |
334 | * it on, but only if we're not batch processing. */ | |
c0d8e84c | 335 | if (whole_file < 0 && !write_batch) |
b1df18d7 | 336 | whole_file = 1; |
25d34a5c | 337 | ret = local_child(argc, args, f_in, f_out, child_main); |
c0d8e84c | 338 | } else |
366345fe | 339 | ret = piped_child(args,f_in,f_out); |
c627d613 | 340 | |
3a69fad0 WD |
341 | if (dir) |
342 | free(dir); | |
82306bf6 | 343 | |
366345fe | 344 | return ret; |
c627d613 AT |
345 | |
346 | oom: | |
366345fe AT |
347 | out_of_memory("do_cmd"); |
348 | return 0; /* not reached */ | |
c627d613 AT |
349 | } |
350 | ||
351 | ||
c627d613 AT |
352 | static char *get_local_name(struct file_list *flist,char *name) |
353 | { | |
7a6421fa | 354 | STRUCT_STAT st; |
87cc45e1 | 355 | int e; |
c627d613 | 356 | |
c95da96a | 357 | if (verbose > 2) |
d9c7edf6 | 358 | rprintf(FINFO,"get_local_name count=%d %s\n", |
1f0610ef DD |
359 | flist->count, NS(name)); |
360 | ||
d9c7edf6 | 361 | if (!name) |
1f0610ef | 362 | return NULL; |
c95da96a | 363 | |
1ff5450d AT |
364 | if (do_stat(name,&st) == 0) { |
365 | if (S_ISDIR(st.st_mode)) { | |
59187666 | 366 | if (!push_dir(name)) { |
982e05bb WD |
367 | rsyserr(FERROR, errno, "push_dir#1 %s failed", |
368 | full_fname(name)); | |
65417579 | 369 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
370 | } |
371 | return NULL; | |
372 | } | |
373 | if (flist->count > 1) { | |
374 | rprintf(FERROR,"ERROR: destination must be a directory when copying more than 1 file\n"); | |
65417579 | 375 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
376 | } |
377 | return name; | |
378 | } | |
379 | ||
87cc45e1 | 380 | if (flist->count <= 1 && ((e = strlen(name)) <= 1 || name[e-1] != '/')) |
1ff5450d AT |
381 | return name; |
382 | ||
1ff5450d | 383 | if (do_mkdir(name,0777 & ~orig_umask) != 0) { |
982e05bb | 384 | rsyserr(FERROR, errno, "mkdir %s failed", full_fname(name)); |
65417579 | 385 | exit_cleanup(RERR_FILEIO); |
e5a96f0f WD |
386 | } |
387 | if (verbose > 0) | |
388 | rprintf(FINFO, "created directory %s\n", name); | |
389 | ||
390 | if (dry_run) { | |
391 | dry_run++; | |
392 | return NULL; | |
1ff5450d AT |
393 | } |
394 | ||
59187666 | 395 | if (!push_dir(name)) { |
982e05bb WD |
396 | rsyserr(FERROR, errno, "push_dir#2 %s failed", |
397 | full_fname(name)); | |
65417579 | 398 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
399 | } |
400 | ||
401 | return NULL; | |
c627d613 AT |
402 | } |
403 | ||
404 | ||
9486289c | 405 | static void do_server_sender(int f_in, int f_out, int argc,char *argv[]) |
c627d613 | 406 | { |
7a6421fa AT |
407 | int i; |
408 | struct file_list *flist; | |
409 | char *dir = argv[0]; | |
c627d613 | 410 | |
45e08edb WD |
411 | if (verbose > 2) { |
412 | rprintf(FINFO, "server_sender starting pid=%ld\n", | |
413 | (long)getpid()); | |
414 | } | |
d9c7edf6 | 415 | |
2adbcdc7 | 416 | if (am_daemon && lp_write_only(module_id)) { |
7a92ded3 WD |
417 | rprintf(FERROR, "ERROR: module is write only\n"); |
418 | exit_cleanup(RERR_SYNTAX); | |
419 | return; | |
420 | } | |
421 | ||
59187666 | 422 | if (!relative_paths && !push_dir(dir)) { |
982e05bb WD |
423 | rsyserr(FERROR, errno, "push_dir#3 %s failed", |
424 | full_fname(dir)); | |
65417579 | 425 | exit_cleanup(RERR_FILESELECT); |
7a6421fa AT |
426 | } |
427 | argc--; | |
428 | argv++; | |
d9c7edf6 | 429 | |
7a6421fa AT |
430 | if (strcmp(dir,".")) { |
431 | int l = strlen(dir); | |
d9c7edf6 | 432 | if (strcmp(dir,"/") == 0) |
7a6421fa | 433 | l = 0; |
e7a392c7 | 434 | for (i = 0; i < argc; i++) |
7a6421fa AT |
435 | argv[i] += l+1; |
436 | } | |
c627d613 | 437 | |
48a1ff0d | 438 | if (argc == 0 && (recurse || list_only)) { |
e1f67417 | 439 | argc = 1; |
7a6421fa AT |
440 | argv--; |
441 | argv[0] = "."; | |
442 | } | |
d9c7edf6 | 443 | |
7a6421fa | 444 | flist = send_file_list(f_out,argc,argv); |
8d9dc9f9 AT |
445 | if (!flist || flist->count == 0) { |
446 | exit_cleanup(0); | |
447 | } | |
448 | ||
da3478b2 WD |
449 | io_start_buffering_in(); |
450 | io_start_buffering_out(); | |
451 | ||
7a6421fa | 452 | send_files(flist,f_out,f_in); |
f1e3656e | 453 | io_flush(FULL_FLUSH); |
7a6421fa | 454 | report(f_out); |
d04e9c51 | 455 | if (protocol_version >= 24) { |
d9c7edf6 | 456 | /* final goodbye message */ |
64c3523a WD |
457 | read_int(f_in); |
458 | } | |
f1e3656e | 459 | io_flush(FULL_FLUSH); |
7a6421fa | 460 | exit_cleanup(0); |
c627d613 AT |
461 | } |
462 | ||
463 | ||
dc5ddbcc AT |
464 | static int do_recv(int f_in,int f_out,struct file_list *flist,char *local_name) |
465 | { | |
d186eb1a | 466 | int pid; |
e1f67417 | 467 | int status = 0; |
41cfde6b | 468 | int error_pipe[2], name_pipe[2]; |
7162c65d | 469 | BOOL need_name_pipe = (basis_dir[0] || partial_dir) && !dry_run; |
dc5ddbcc | 470 | |
bb6721dc WD |
471 | /* The receiving side mustn't obey this, or an existing symlink that |
472 | * points to an identical file won't be replaced by the referent. */ | |
473 | copy_links = 0; | |
474 | ||
d186eb1a AT |
475 | if (preserve_hard_links) |
476 | init_hard_links(flist); | |
dc5ddbcc | 477 | |
48a1ff0d | 478 | if (delete_before) { |
6957ae33 | 479 | /* I moved this here from recv_files() to prevent a race condition */ |
48a1ff0d | 480 | if (keep_dirs && !local_name && flist->count > 0) |
6957ae33 | 481 | delete_files(flist); |
6957ae33 AT |
482 | } |
483 | ||
41cfde6b WD |
484 | if (fd_pair(error_pipe) < 0 |
485 | || (need_name_pipe && fd_pair(name_pipe) < 0)) { | |
ab759cd2 | 486 | rsyserr(FERROR, errno, "pipe failed in do_recv"); |
c8f2f857 | 487 | exit_cleanup(RERR_IPC); |
554e0a8d | 488 | } |
d9c7edf6 | 489 | |
f1e3656e | 490 | io_flush(NORMAL_FLUSH); |
c6e7fcb4 | 491 | |
ba449e44 | 492 | if ((pid = do_fork()) == -1) { |
c8f2f857 | 493 | rsyserr(FERROR, errno, "fork failed in do_recv"); |
ba449e44 WD |
494 | exit_cleanup(RERR_IPC); |
495 | } | |
496 | ||
497 | if (pid == 0) { | |
554e0a8d | 498 | close(error_pipe[0]); |
41cfde6b WD |
499 | if (need_name_pipe) { |
500 | close(name_pipe[1]); | |
501 | set_blocking(name_pipe[0]); | |
502 | } else | |
503 | name_pipe[0] = -1; | |
3a69fad0 WD |
504 | if (f_in != f_out) |
505 | close(f_out); | |
e08c9610 | 506 | |
554e0a8d | 507 | /* we can't let two processes write to the socket at one time */ |
9eeb3b9c | 508 | close_multiplexing_out(); |
554e0a8d AT |
509 | |
510 | /* set place to send errors */ | |
f1e3656e | 511 | set_msg_fd_out(error_pipe[1]); |
554e0a8d | 512 | |
41cfde6b | 513 | recv_files(f_in, flist, local_name, name_pipe[0]); |
f1e3656e | 514 | io_flush(FULL_FLUSH); |
ba5e128d | 515 | report(f_in); |
e08c9610 | 516 | |
f1e3656e WD |
517 | send_msg(MSG_DONE, "", 0); |
518 | io_flush(FULL_FLUSH); | |
4a748188 | 519 | /* finally we go to sleep until our parent kills us |
9af87151 WD |
520 | * with a USR2 signal. We sleep for a short time as on |
521 | * some OSes a signal won't interrupt a sleep! */ | |
f1e3656e WD |
522 | while (1) |
523 | msleep(20); | |
d186eb1a | 524 | } |
dc5ddbcc | 525 | |
b695f242 | 526 | am_generator = 1; |
9eeb3b9c | 527 | close_multiplexing_in(); |
b9f592fb WD |
528 | if (write_batch) |
529 | stop_write_batch(); | |
b695f242 | 530 | |
554e0a8d | 531 | close(error_pipe[1]); |
41cfde6b WD |
532 | if (need_name_pipe) { |
533 | close(name_pipe[0]); | |
534 | set_nonblocking(name_pipe[1]); | |
535 | } else | |
536 | name_pipe[1] = -1; | |
3a69fad0 WD |
537 | if (f_in != f_out) |
538 | close(f_in); | |
e1b3d5c4 | 539 | |
da3478b2 | 540 | io_start_buffering_out(); |
b3e10ed7 | 541 | |
f1e3656e | 542 | set_msg_fd_in(error_pipe[0]); |
554e0a8d | 543 | |
41cfde6b | 544 | generate_files(f_out, flist, local_name, name_pipe[1]); |
8d9dc9f9 | 545 | |
e5fbaa71 | 546 | report(-1); |
f1e3656e | 547 | io_flush(FULL_FLUSH); |
d04e9c51 | 548 | if (protocol_version >= 24) { |
8ada7518 AT |
549 | /* send a final goodbye message */ |
550 | write_int(f_out, -1); | |
551 | } | |
f1e3656e | 552 | io_flush(FULL_FLUSH); |
8ada7518 | 553 | |
f1e3656e | 554 | set_msg_fd_in(-1); |
089a2435 | 555 | kill(pid, SIGUSR2); |
d79d1c69 | 556 | wait_process(pid, &status); |
d186eb1a | 557 | return status; |
dc5ddbcc AT |
558 | } |
559 | ||
c627d613 | 560 | |
9486289c | 561 | static void do_server_recv(int f_in, int f_out, int argc,char *argv[]) |
c627d613 | 562 | { |
7a6421fa AT |
563 | int status; |
564 | struct file_list *flist; | |
6c2e5b56 | 565 | char *local_name = NULL; |
7a6421fa | 566 | char *dir = NULL; |
07bff66f WD |
567 | int save_verbose = verbose; |
568 | ||
569 | if (filesfrom_fd >= 0) { | |
570 | /* We can't mix messages with files-from data on the socket, | |
571 | * so temporarily turn off verbose messages. */ | |
572 | verbose = 0; | |
573 | } | |
f0fca04e | 574 | |
45e08edb WD |
575 | if (verbose > 2) { |
576 | rprintf(FINFO, "server_recv(%d) starting pid=%ld\n", | |
577 | argc, (long)getpid()); | |
578 | } | |
09b7f5db | 579 | |
2adbcdc7 | 580 | if (am_daemon && lp_read_only(module_id)) { |
09b7f5db AT |
581 | rprintf(FERROR,"ERROR: module is read only\n"); |
582 | exit_cleanup(RERR_SYNTAX); | |
583 | return; | |
584 | } | |
585 | ||
d9c7edf6 | 586 | |
7a6421fa AT |
587 | if (argc > 0) { |
588 | dir = argv[0]; | |
589 | argc--; | |
590 | argv++; | |
59187666 | 591 | if (!am_daemon && !push_dir(dir)) { |
982e05bb WD |
592 | rsyserr(FERROR, errno, "push_dir#4 %s failed", |
593 | full_fname(dir)); | |
65417579 | 594 | exit_cleanup(RERR_FILESELECT); |
d9c7edf6 | 595 | } |
7a6421fa | 596 | } |
c627d613 | 597 | |
da3478b2 | 598 | io_start_buffering_in(); |
b33b791e | 599 | if (delete_mode && !delete_excluded) |
7a6421fa | 600 | recv_exclude_list(f_in); |
c627d613 | 601 | |
7c2a9e76 | 602 | if (filesfrom_fd >= 0) { |
07bff66f WD |
603 | /* We need to send the files-from names to the sender at the |
604 | * same time that we receive the file-list from them, so we | |
605 | * need the IO routines to automatically write out the names | |
606 | * onto our f_out socket as we read the file-list. This | |
607 | * avoids both deadlock and extra delays/buffers. */ | |
7c2a9e76 WD |
608 | io_set_filesfrom_fds(filesfrom_fd, f_out); |
609 | filesfrom_fd = -1; | |
610 | } | |
611 | ||
b9f592fb | 612 | flist = recv_file_list(f_in); |
07bff66f | 613 | verbose = save_verbose; |
4c36a13e AT |
614 | if (!flist) { |
615 | rprintf(FERROR,"server_recv: recv_file_list error\n"); | |
65417579 | 616 | exit_cleanup(RERR_FILESELECT); |
7a6421fa | 617 | } |
d9c7edf6 WD |
618 | |
619 | if (argc > 0) { | |
7a6421fa AT |
620 | if (strcmp(dir,".")) { |
621 | argv[0] += strlen(dir); | |
3a69fad0 WD |
622 | if (argv[0][0] == '/') |
623 | argv[0]++; | |
7a6421fa AT |
624 | } |
625 | local_name = get_local_name(flist,argv[0]); | |
626 | } | |
c627d613 | 627 | |
7a6421fa AT |
628 | status = do_recv(f_in,f_out,flist,local_name); |
629 | exit_cleanup(status); | |
c627d613 AT |
630 | } |
631 | ||
632 | ||
734a94a2 | 633 | int child_main(int argc, char *argv[]) |
25d34a5c MP |
634 | { |
635 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); | |
734a94a2 | 636 | return 0; |
25d34a5c MP |
637 | } |
638 | ||
639 | ||
9486289c | 640 | void start_server(int f_in, int f_out, int argc, char *argv[]) |
366345fe | 641 | { |
f0359dd0 AT |
642 | set_nonblocking(f_in); |
643 | set_nonblocking(f_out); | |
644 | ||
da3478b2 WD |
645 | io_set_sock_fds(f_in, f_out); |
646 | setup_protocol(f_out, f_in); | |
647 | ||
d04e9c51 | 648 | if (protocol_version >= 23) |
da3478b2 | 649 | io_start_multiplex_out(); |
7a6421fa | 650 | |
7a6421fa | 651 | if (am_sender) { |
83926d3c | 652 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
9b3318b0 | 653 | |
b9f592fb WD |
654 | recv_exclude_list(f_in); |
655 | if (cvs_exclude) | |
656 | add_cvs_excludes(); | |
7a6421fa AT |
657 | do_server_sender(f_in, f_out, argc, argv); |
658 | } else { | |
659 | do_server_recv(f_in, f_out, argc, argv); | |
660 | } | |
661 | exit_cleanup(0); | |
366345fe AT |
662 | } |
663 | ||
0ba48136 MP |
664 | |
665 | /* | |
666 | * This is called once the connection has been negotiated. It is used | |
667 | * for rsyncd, remote-shell, and local connections. | |
668 | */ | |
19b27a48 | 669 | int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[]) |
9486289c | 670 | { |
088aac85 | 671 | struct file_list *flist = NULL; |
9486289c AT |
672 | int status = 0, status2 = 0; |
673 | char *local_name = NULL; | |
19b27a48 AT |
674 | |
675 | cleanup_child_pid = pid; | |
67a28eb2 | 676 | if (!read_batch) { |
b9f592fb WD |
677 | set_nonblocking(f_in); |
678 | set_nonblocking(f_out); | |
679 | } | |
f0359dd0 | 680 | |
da3478b2 | 681 | io_set_sock_fds(f_in, f_out); |
6d7b6081 AT |
682 | setup_protocol(f_out,f_in); |
683 | ||
b9f592fb | 684 | if (protocol_version >= 23 && !read_batch) |
da3478b2 | 685 | io_start_multiplex_in(); |
d9c7edf6 | 686 | |
18882701 WD |
687 | /* We set our stderr file handle to blocking because ssh might have |
688 | * set it to non-blocking. This can be particularly troublesome if | |
689 | * stderr is a clone of stdout, because ssh would have set our stdout | |
690 | * to non-blocking at the same time (which can easily cause us to lose | |
691 | * output from our print statements). This kluge shouldn't cause ssh | |
692 | * any problems for how we use it. Note also that we delayed setting | |
693 | * this until after the above protocol setup so that we know for sure | |
694 | * that ssh is done twiddling its file descriptors. */ | |
695 | set_blocking(STDERR_FILENO); | |
696 | ||
9486289c | 697 | if (am_sender) { |
83926d3c | 698 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
da3478b2 | 699 | io_start_buffering_out(); |
a0a33ee5 WD |
700 | if (!remote_filesfrom_file) |
701 | set_msg_fd_in(f_in); | |
9486289c AT |
702 | if (cvs_exclude) |
703 | add_cvs_excludes(); | |
d9c7edf6 | 704 | if (delete_mode && !delete_excluded) |
9486289c | 705 | send_exclude_list(f_out); |
7c2a9e76 WD |
706 | if (remote_filesfrom_file) |
707 | filesfrom_fd = f_in; | |
b9f592fb WD |
708 | |
709 | if (write_batch) | |
710 | start_write_batch(f_out); | |
64c3523a | 711 | if (!read_batch) /* don't write to pipe */ |
d9c7edf6 | 712 | flist = send_file_list(f_out,argc,argv); |
a0a33ee5 | 713 | set_msg_fd_in(-1); |
d9c7edf6 | 714 | if (verbose > 3) |
9486289c | 715 | rprintf(FINFO,"file list sent\n"); |
e1b3d5c4 | 716 | |
f1e3656e | 717 | io_flush(NORMAL_FLUSH); |
9486289c | 718 | send_files(flist,f_out,f_in); |
f1e3656e | 719 | io_flush(FULL_FLUSH); |
d04e9c51 | 720 | if (protocol_version >= 24) { |
d9c7edf6 | 721 | /* final goodbye message */ |
6c65e146 AT |
722 | read_int(f_in); |
723 | } | |
9486289c AT |
724 | if (pid != -1) { |
725 | if (verbose > 3) | |
08a740ff | 726 | rprintf(FINFO,"client_run waiting on %d\n", (int) pid); |
f1e3656e | 727 | io_flush(FULL_FLUSH); |
d79d1c69 | 728 | wait_process(pid, &status); |
9486289c | 729 | } |
3d382777 | 730 | report(-1); |
f1e3656e | 731 | io_flush(FULL_FLUSH); |
9486289c AT |
732 | exit_cleanup(status); |
733 | } | |
f7632fc6 | 734 | |
48a1ff0d WD |
735 | if (argc == 0) |
736 | list_only |= 1; | |
d9c7edf6 | 737 | |
1082b52b | 738 | if (!read_batch) |
d9c7edf6 WD |
739 | send_exclude_list(f_out); |
740 | ||
7c2a9e76 WD |
741 | if (filesfrom_fd >= 0) { |
742 | io_set_filesfrom_fds(filesfrom_fd, f_out); | |
743 | filesfrom_fd = -1; | |
744 | } | |
745 | ||
b9f592fb WD |
746 | if (write_batch) |
747 | start_write_batch(f_in); | |
9486289c AT |
748 | flist = recv_file_list(f_in); |
749 | if (!flist || flist->count == 0) { | |
796d484b | 750 | rprintf(FINFO, "client: nothing to do: " |
d9c7edf6 WD |
751 | "perhaps you need to specify some filenames or " |
752 | "the --recursive option?\n"); | |
9486289c AT |
753 | exit_cleanup(0); |
754 | } | |
d9c7edf6 | 755 | |
9486289c | 756 | local_name = get_local_name(flist,argv[0]); |
d9c7edf6 | 757 | |
9486289c | 758 | status2 = do_recv(f_in,f_out,flist,local_name); |
d9c7edf6 | 759 | |
9486289c | 760 | if (pid != -1) { |
8d9dc9f9 | 761 | if (verbose > 3) |
08a740ff | 762 | rprintf(FINFO,"client_run2 waiting on %d\n", (int) pid); |
f1e3656e | 763 | io_flush(FULL_FLUSH); |
d79d1c69 | 764 | wait_process(pid, &status); |
9486289c | 765 | } |
d9c7edf6 | 766 | |
ff81e809 | 767 | return MAX(status, status2); |
9486289c AT |
768 | } |
769 | ||
7169bb4a MP |
770 | static int copy_argv (char *argv[]) |
771 | { | |
772 | int i; | |
773 | ||
774 | for (i = 0; argv[i]; i++) { | |
775 | if (!(argv[i] = strdup(argv[i]))) { | |
776 | rprintf (FERROR, "out of memory at %s(%d)\n", | |
777 | __FILE__, __LINE__); | |
778 | return RERR_MALLOC; | |
779 | } | |
780 | } | |
781 | ||
782 | return 0; | |
783 | } | |
784 | ||
785 | ||
c1a04ecb | 786 | /** |
0ba48136 MP |
787 | * Start a client for either type of remote connection. Work out |
788 | * whether the arguments request a remote shell or rsyncd connection, | |
789 | * and call the appropriate connection function, then run_client. | |
0b4af330 MP |
790 | * |
791 | * Calls either start_socket_client (for sockets) or do_cmd and | |
792 | * client_run (for ssh). | |
c1a04ecb | 793 | **/ |
fc8a6b97 | 794 | static int start_client(int argc, char *argv[]) |
5d6bcd44 AT |
795 | { |
796 | char *p; | |
797 | char *shell_machine = NULL; | |
798 | char *shell_path = NULL; | |
799 | char *shell_user = NULL; | |
19b27a48 AT |
800 | int ret; |
801 | pid_t pid; | |
5d6bcd44 | 802 | int f_in,f_out; |
7169bb4a MP |
803 | int rc; |
804 | ||
805 | /* Don't clobber argv[] so that ps(1) can still show the right | |
d9c7edf6 | 806 | * command line. */ |
75aeac44 | 807 | if ((rc = copy_argv(argv))) |
7169bb4a | 808 | return rc; |
5d6bcd44 | 809 | |
75aeac44 | 810 | /* rsync:// always uses rsync server over direct socket connection */ |
b9f592fb WD |
811 | if (strncasecmp(URL_PREFIX, argv[0], strlen(URL_PREFIX)) == 0 |
812 | && !read_batch) { | |
f7632fc6 AT |
813 | char *host, *path; |
814 | ||
7169bb4a | 815 | host = argv[0] + strlen(URL_PREFIX); |
f7632fc6 AT |
816 | p = strchr(host,'/'); |
817 | if (p) { | |
50b31539 | 818 | *p = '\0'; |
f7632fc6 | 819 | path = p+1; |
50b31539 | 820 | } else |
a125c82a | 821 | path = ""; |
50b31539 WD |
822 | if (*host == '[' && (p = strchr(host, ']')) != NULL) { |
823 | host++; | |
824 | *p++ = '\0'; | |
825 | if (*p != ':') | |
826 | p = NULL; | |
827 | } else | |
828 | p = strchr(host, ':'); | |
2acf81eb DD |
829 | if (p) { |
830 | rsync_port = atoi(p+1); | |
50b31539 | 831 | *p = '\0'; |
cf510ad2 | 832 | } |
f7632fc6 AT |
833 | return start_socket_client(host, path, argc-1, argv+1); |
834 | } | |
835 | ||
d16c245f | 836 | if (!read_batch) { /* for read_batch, NO source is specified */ |
a125c82a | 837 | p = find_colon(argv[0]); |
d16c245f | 838 | if (p) { /* source is remote */ |
7c2a9e76 WD |
839 | if (remote_filesfrom_file |
840 | && remote_filesfrom_file != files_from + 1 | |
841 | && strncmp(files_from, argv[0], p-argv[0]+1) != 0) { | |
842 | rprintf(FERROR, | |
50b31539 | 843 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
844 | exit_cleanup(RERR_SYNTAX); |
845 | } | |
d9c7edf6 WD |
846 | if (p[1] == ':') { /* double colon */ |
847 | *p = 0; | |
848 | if (!shell_cmd) { | |
849 | return start_socket_client(argv[0], p+2, | |
850 | argc-1, argv+1); | |
851 | } | |
852 | p++; | |
853 | daemon_over_rsh = 1; | |
75aeac44 | 854 | } |
3591c066 | 855 | |
d16c245f | 856 | if (argc < 1) { /* destination required */ |
d9c7edf6 WD |
857 | usage(FERROR); |
858 | exit_cleanup(RERR_SYNTAX); | |
859 | } | |
a125c82a | 860 | |
d9c7edf6 WD |
861 | am_sender = 0; |
862 | *p = 0; | |
863 | shell_machine = argv[0]; | |
864 | shell_path = p+1; | |
d9c7edf6 | 865 | argv++; |
d16c245f | 866 | } else { /* source is local */ |
d9c7edf6 WD |
867 | am_sender = 1; |
868 | ||
869 | /* rsync:// destination uses rsync server over direct socket */ | |
870 | if (strncasecmp(URL_PREFIX, argv[argc-1], strlen(URL_PREFIX)) == 0) { | |
871 | char *host, *path; | |
872 | ||
873 | host = argv[argc-1] + strlen(URL_PREFIX); | |
874 | p = strchr(host,'/'); | |
875 | if (p) { | |
50b31539 | 876 | *p = '\0'; |
d9c7edf6 | 877 | path = p+1; |
50b31539 | 878 | } else |
d9c7edf6 | 879 | path = ""; |
50b31539 WD |
880 | if (*host == '[' && (p = strchr(host, ']')) != NULL) { |
881 | host++; | |
882 | *p++ = '\0'; | |
883 | if (*p != ':') | |
884 | p = NULL; | |
885 | } else | |
886 | p = strchr(host, ':'); | |
d9c7edf6 WD |
887 | if (p) { |
888 | rsync_port = atoi(p+1); | |
50b31539 | 889 | *p = '\0'; |
cf510ad2 | 890 | } |
d9c7edf6 | 891 | return start_socket_client(host, path, argc-1, argv); |
a125c82a | 892 | } |
d9c7edf6 | 893 | |
d16c245f | 894 | p = find_colon(argv[argc-1]); /* look in dest arg */ |
7c2a9e76 WD |
895 | if (p && remote_filesfrom_file |
896 | && remote_filesfrom_file != files_from + 1 | |
897 | && strncmp(files_from, argv[argc-1], p-argv[argc-1]+1) != 0) { | |
898 | rprintf(FERROR, | |
50b31539 | 899 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
900 | exit_cleanup(RERR_SYNTAX); |
901 | } | |
d16c245f | 902 | if (!p) { /* no colon found, so src & dest are local */ |
d9c7edf6 | 903 | local_server = 1; |
7c2a9e76 WD |
904 | if (remote_filesfrom_file) { |
905 | rprintf(FERROR, | |
50b31539 | 906 | "--files-from cannot be remote when the transfer is local\n"); |
7c2a9e76 WD |
907 | exit_cleanup(RERR_SYNTAX); |
908 | } | |
d9c7edf6 | 909 | } else if (p[1] == ':') { /* double colon */ |
a125c82a | 910 | *p = 0; |
d9c7edf6 WD |
911 | if (!shell_cmd) { |
912 | return start_socket_client(argv[argc-1], p+2, | |
913 | argc-1, argv); | |
914 | } | |
915 | p++; | |
916 | daemon_over_rsh = 1; | |
a125c82a | 917 | } |
a125c82a | 918 | |
d9c7edf6 WD |
919 | if (argc < 2) { |
920 | usage(FERROR); | |
921 | exit_cleanup(RERR_SYNTAX); | |
75aeac44 | 922 | } |
3591c066 | 923 | |
d9c7edf6 WD |
924 | if (local_server) { |
925 | shell_machine = NULL; | |
926 | shell_path = argv[argc-1]; | |
927 | } else { | |
928 | *p = 0; | |
929 | shell_machine = argv[argc-1]; | |
930 | shell_path = p+1; | |
931 | } | |
5d6bcd44 | 932 | } |
d16c245f WD |
933 | argc--; |
934 | } else { /* read_batch */ | |
d9c7edf6 WD |
935 | local_server = 1; |
936 | shell_path = argv[argc-1]; | |
b9f592fb WD |
937 | if (find_colon(shell_path)) { |
938 | rprintf(FERROR, "remote destination is not allowed with --read-batch\n"); | |
939 | exit_cleanup(RERR_SYNTAX); | |
940 | } | |
6902ed17 MP |
941 | } |
942 | ||
5d6bcd44 | 943 | if (shell_machine) { |
6fc048f4 | 944 | p = strrchr(shell_machine,'@'); |
5d6bcd44 AT |
945 | if (p) { |
946 | *p = 0; | |
947 | shell_user = shell_machine; | |
948 | shell_machine = p+1; | |
949 | } | |
950 | } | |
951 | ||
952 | if (verbose > 3) { | |
9486289c | 953 | rprintf(FINFO,"cmd=%s machine=%s user=%s path=%s\n", |
5d6bcd44 AT |
954 | shell_cmd?shell_cmd:"", |
955 | shell_machine?shell_machine:"", | |
956 | shell_user?shell_user:"", | |
957 | shell_path?shell_path:""); | |
958 | } | |
d9c7edf6 | 959 | |
d16c245f | 960 | /* for remote source, only single dest arg can remain ... */ |
f7632fc6 | 961 | if (!am_sender && argc > 1) { |
5d6bcd44 | 962 | usage(FERROR); |
65417579 | 963 | exit_cleanup(RERR_SYNTAX); |
5d6bcd44 | 964 | } |
27e3e9c9 | 965 | |
d16c245f | 966 | /* ... or no dest at all */ |
48a1ff0d WD |
967 | if (!am_sender && argc == 0) |
968 | list_only |= 1; | |
d9c7edf6 | 969 | |
75aeac44 WD |
970 | pid = do_cmd(shell_cmd,shell_machine,shell_user,shell_path, |
971 | &f_in,&f_out); | |
972 | ||
973 | /* if we're running an rsync server on the remote host over a | |
9af87151 | 974 | * remote shell command, we need to do the RSYNCD protocol first */ |
75aeac44 WD |
975 | if (daemon_over_rsh) { |
976 | int tmpret; | |
977 | tmpret = start_inband_exchange(shell_user, shell_path, | |
978 | f_in, f_out, argc); | |
979 | if (tmpret < 0) | |
980 | return tmpret; | |
981 | } | |
982 | ||
fc8a6b97 AT |
983 | ret = client_run(f_in, f_out, pid, argc, argv); |
984 | ||
985 | fflush(stdout); | |
986 | fflush(stderr); | |
987 | ||
988 | return ret; | |
5d6bcd44 AT |
989 | } |
990 | ||
366345fe | 991 | |
067669da WD |
992 | static RETSIGTYPE sigusr1_handler(UNUSED(int val)) |
993 | { | |
65417579 | 994 | exit_cleanup(RERR_SIGNAL); |
82306bf6 AT |
995 | } |
996 | ||
067669da WD |
997 | static RETSIGTYPE sigusr2_handler(UNUSED(int val)) |
998 | { | |
19b27a48 | 999 | if (log_got_error) _exit(RERR_PARTIAL); |
8b35435f AT |
1000 | _exit(0); |
1001 | } | |
1002 | ||
067669da WD |
1003 | static RETSIGTYPE sigchld_handler(UNUSED(int val)) |
1004 | { | |
029c1713 | 1005 | #ifdef WNOHANG |
ee7118a8 DD |
1006 | int cnt, status; |
1007 | pid_t pid; | |
1008 | /* An empty waitpid() loop was put here by Tridge and we could never | |
d9c7edf6 | 1009 | * get him to explain why he put it in, so rather than taking it |
ee7118a8 DD |
1010 | * out we're instead saving the child exit statuses for later use. |
1011 | * The waitpid() loop presumably eliminates all possibility of leaving | |
1012 | * zombie children, maybe that's why he did it. | |
1013 | */ | |
1014 | while ((pid = waitpid(-1, &status, WNOHANG)) > 0) { | |
9af87151 WD |
1015 | /* save the child's exit status */ |
1016 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { | |
1017 | if (pid_stat_table[cnt].pid == 0) { | |
1018 | pid_stat_table[cnt].pid = pid; | |
1019 | pid_stat_table[cnt].status = status; | |
1020 | break; | |
1021 | } | |
1022 | } | |
ee7118a8 | 1023 | } |
029c1713 | 1024 | #endif |
19b27a48 AT |
1025 | } |
1026 | ||
c0531332 MP |
1027 | |
1028 | /** | |
1029 | * This routine catches signals and tries to send them to gdb. | |
1030 | * | |
1031 | * Because it's called from inside a signal handler it ought not to | |
1032 | * use too many library routines. | |
1033 | * | |
1034 | * @todo Perhaps use "screen -X" instead/as well, to help people | |
1035 | * debugging without easy access to X. Perhaps use an environment | |
1036 | * variable, or just call a script? | |
1037 | * | |
1038 | * @todo The /proc/ magic probably only works on Linux (and | |
1039 | * Solaris?) Can we be more portable? | |
1040 | **/ | |
1041 | #ifdef MAINTAINER_MODE | |
4fdc39dd MP |
1042 | const char *get_panic_action(void) |
1043 | { | |
1044 | const char *cmd_fmt = getenv("RSYNC_PANIC_ACTION"); | |
1045 | ||
1046 | if (cmd_fmt) | |
1047 | return cmd_fmt; | |
1048 | else | |
1049 | return "xterm -display :0 -T Panic -n Panic " | |
1050 | "-e gdb /proc/%d/exe %d"; | |
1051 | } | |
1052 | ||
1053 | ||
9fb3f7a9 MP |
1054 | /** |
1055 | * Handle a fatal signal by launching a debugger, controlled by $RSYNC_PANIC_ACTION. | |
1056 | * | |
1057 | * This signal handler is only installed if we were configured with | |
1058 | * --enable-maintainer-mode. Perhaps it should always be on and we | |
1059 | * should just look at the environment variable, but I'm a bit leery | |
1060 | * of a signal sending us into a busy loop. | |
1061 | **/ | |
067669da | 1062 | static RETSIGTYPE rsync_panic_handler(UNUSED(int whatsig)) |
c0531332 MP |
1063 | { |
1064 | char cmd_buf[300]; | |
1065 | int ret; | |
4fdc39dd MP |
1066 | |
1067 | sprintf(cmd_buf, get_panic_action(), | |
c0531332 MP |
1068 | getpid(), getpid()); |
1069 | ||
1070 | /* Unless we failed to execute gdb, we allow the process to | |
1071 | * continue. I'm not sure if that's right. */ | |
1072 | ret = system(cmd_buf); | |
1073 | if (ret) | |
1074 | _exit(ret); | |
1075 | } | |
1076 | #endif | |
1077 | ||
1078 | ||
5d6bcd44 | 1079 | int main(int argc,char *argv[]) |
d9c7edf6 | 1080 | { |
ff81e809 | 1081 | int ret; |
66a9dc96 WD |
1082 | int orig_argc = argc; |
1083 | char **orig_argv = argv; | |
5d6bcd44 | 1084 | |
7a6421fa | 1085 | signal(SIGUSR1, sigusr1_handler); |
8b35435f | 1086 | signal(SIGUSR2, sigusr2_handler); |
19b27a48 | 1087 | signal(SIGCHLD, sigchld_handler); |
c0531332 MP |
1088 | #ifdef MAINTAINER_MODE |
1089 | signal(SIGSEGV, rsync_panic_handler); | |
1090 | signal(SIGFPE, rsync_panic_handler); | |
1091 | signal(SIGABRT, rsync_panic_handler); | |
1092 | signal(SIGBUS, rsync_panic_handler); | |
1093 | #endif /* def MAINTAINER_MODE */ | |
5d6bcd44 | 1094 | |
7a6421fa | 1095 | starttime = time(NULL); |
6fe05820 | 1096 | am_root = (MY_UID() == 0); |
c627d613 | 1097 | |
a800434a AT |
1098 | memset(&stats, 0, sizeof(stats)); |
1099 | ||
df5e03da AT |
1100 | if (argc < 2) { |
1101 | usage(FERROR); | |
65417579 | 1102 | exit_cleanup(RERR_SYNTAX); |
df5e03da AT |
1103 | } |
1104 | ||
7a6421fa | 1105 | /* we set a 0 umask so that correct file permissions can be |
9af87151 | 1106 | * carried across */ |
7a6421fa | 1107 | orig_umask = (int)umask(0); |
5d6bcd44 | 1108 | |
50135767 | 1109 | if (!parse_arguments(&argc, (const char ***) &argv, 1)) { |
d9c7edf6 WD |
1110 | /* FIXME: We ought to call the same error-handling |
1111 | * code here, rather than relying on getopt. */ | |
50135767 | 1112 | option_error(); |
65417579 | 1113 | exit_cleanup(RERR_SYNTAX); |
b11ed3b1 | 1114 | } |
5d6bcd44 | 1115 | |
7a6421fa | 1116 | signal(SIGINT,SIGNAL_CAST sig_int); |
7a6421fa | 1117 | signal(SIGHUP,SIGNAL_CAST sig_int); |
8638dd48 | 1118 | signal(SIGTERM,SIGNAL_CAST sig_int); |
6b83141d | 1119 | |
34758d5c MP |
1120 | /* Ignore SIGPIPE; we consistently check error codes and will |
1121 | * see the EPIPE. */ | |
1122 | signal(SIGPIPE, SIG_IGN); | |
1123 | ||
c226b7c2 | 1124 | /* Initialize push_dir here because on some old systems getcwd |
9af87151 WD |
1125 | * (implemented by forking "pwd" and reading its output) doesn't |
1126 | * work when there are other child processes. Also, on all systems | |
1127 | * that implement getcwd that way "pwd" can't be found after chroot. */ | |
59187666 | 1128 | push_dir(NULL); |
c226b7c2 | 1129 | |
44e9e221 WD |
1130 | init_flist(); |
1131 | ||
b9f592fb WD |
1132 | if (write_batch || read_batch) { |
1133 | if (write_batch) | |
66a9dc96 | 1134 | write_batch_shell_file(orig_argc, orig_argv, argc); |
b9f592fb | 1135 | |
dbbab0c4 WD |
1136 | if (read_batch && strcmp(batch_name, "-") == 0) |
1137 | batch_fd = STDIN_FILENO; | |
1138 | else { | |
1139 | batch_fd = do_open(batch_name, | |
b9f592fb WD |
1140 | write_batch ? O_WRONLY | O_CREAT | O_TRUNC |
1141 | : O_RDONLY, S_IRUSR | S_IWUSR); | |
dbbab0c4 | 1142 | } |
b9f592fb WD |
1143 | if (batch_fd < 0) { |
1144 | rsyserr(FERROR, errno, "Batch file %s open error", | |
9b3318b0 | 1145 | batch_name); |
b9f592fb WD |
1146 | exit_cleanup(RERR_FILEIO); |
1147 | } | |
9459290a WD |
1148 | if (read_batch) |
1149 | read_stream_flags(batch_fd); | |
6902ed17 MP |
1150 | } |
1151 | ||
75aeac44 | 1152 | if (am_daemon && !am_server) |
7a6421fa | 1153 | return daemon_main(); |
f0fca04e | 1154 | |
08ac228f AT |
1155 | if (argc < 1) { |
1156 | usage(FERROR); | |
65417579 | 1157 | exit_cleanup(RERR_SYNTAX); |
08ac228f AT |
1158 | } |
1159 | ||
7a6421fa AT |
1160 | if (dry_run) |
1161 | verbose = MAX(verbose,1); | |
c627d613 | 1162 | |
7a6421fa | 1163 | if (am_server) { |
f0359dd0 AT |
1164 | set_nonblocking(STDIN_FILENO); |
1165 | set_nonblocking(STDOUT_FILENO); | |
75aeac44 WD |
1166 | if (am_daemon) |
1167 | return start_daemon(STDIN_FILENO, STDOUT_FILENO); | |
7a6421fa AT |
1168 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); |
1169 | } | |
c627d613 | 1170 | |
ff81e809 | 1171 | ret = start_client(argc, argv); |
d9c7edf6 | 1172 | if (ret == -1) |
9098bbf3 | 1173 | exit_cleanup(RERR_STARTCLIENT); |
088aac85 | 1174 | else |
9098bbf3 MP |
1175 | exit_cleanup(ret); |
1176 | ||
0f5a04e3 | 1177 | return ret; |
c627d613 | 1178 | } |