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; | |
36 | extern int delete_excluded; | |
37 | extern int delete_after; | |
38 | extern int daemon_over_rsh; | |
39 | extern int do_stats; | |
40 | extern int dry_run; | |
41 | extern int list_only; | |
42 | extern int local_server; | |
43 | extern int log_got_error; | |
44 | extern int module_id; | |
45 | extern int orig_umask; | |
bb6721dc | 46 | extern int copy_links; |
83926d3c | 47 | extern int keep_dirlinks; |
32eda096 | 48 | extern int preserve_hard_links; |
d04e9c51 | 49 | extern int protocol_version; |
32eda096 WD |
50 | extern int recurse; |
51 | extern int relative_paths; | |
52 | extern int rsync_port; | |
b1df18d7 | 53 | extern int whole_file; |
32eda096 WD |
54 | extern int read_batch; |
55 | extern int write_batch; | |
b9f592fb | 56 | extern int batch_fd; |
c0d8e84c | 57 | extern int batch_gen_fd; |
32eda096 WD |
58 | extern int filesfrom_fd; |
59 | extern pid_t cleanup_child_pid; | |
60 | extern char *files_from; | |
61 | extern char *remote_filesfrom_file; | |
7162c65d | 62 | extern char *partial_dir; |
c3fad2e2 | 63 | extern char *basis_dir[]; |
32eda096 WD |
64 | extern char *rsync_path; |
65 | extern char *shell_cmd; | |
9b3318b0 | 66 | extern char *batch_name; |
c627d613 | 67 | |
b695f242 | 68 | |
ee7118a8 DD |
69 | /* there's probably never more than at most 2 outstanding child processes, |
70 | * but set it higher just in case. | |
71 | */ | |
72 | #define MAXCHILDPROCS 5 | |
73 | ||
74 | struct pid_status { | |
75 | pid_t pid; | |
76 | int status; | |
77 | } pid_stat_table[MAXCHILDPROCS]; | |
78 | ||
e5a2b854 | 79 | static void show_malloc_stats(void); |
82980a23 AT |
80 | |
81 | /**************************************************************************** | |
82 | wait for a process to exit, calling io_flush while waiting | |
83 | ****************************************************************************/ | |
84 | void wait_process(pid_t pid, int *status) | |
85 | { | |
ee7118a8 DD |
86 | pid_t waited_pid; |
87 | int cnt; | |
88 | ||
89 | while ((waited_pid = waitpid(pid, status, WNOHANG)) == 0) { | |
a24c6870 | 90 | msleep(20); |
f1e3656e | 91 | io_flush(FULL_FLUSH); |
82980a23 | 92 | } |
d9c7edf6 | 93 | |
6fb812f7 | 94 | if (waited_pid == -1 && errno == ECHILD) { |
ee7118a8 DD |
95 | /* status of requested child no longer available. |
96 | * check to see if it was processed by the sigchld_handler. | |
97 | */ | |
98 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { | |
99 | if (pid == pid_stat_table[cnt].pid) { | |
100 | *status = pid_stat_table[cnt].status; | |
101 | pid_stat_table[cnt].pid = 0; | |
102 | break; | |
103 | } | |
104 | } | |
105 | } | |
106 | ||
d9c7edf6 WD |
107 | /* TODO: If the child exited on a signal, then log an |
108 | * appropriate error message. Perhaps we should also accept a | |
109 | * message describing the purpose of the child. Also indicate | |
110 | * this to the caller so that thhey know something went | |
111 | * wrong. */ | |
82980a23 AT |
112 | *status = WEXITSTATUS(*status); |
113 | } | |
114 | ||
b9f592fb WD |
115 | /* This function gets called from all 3 processes. We want the client side |
116 | * to actually output the text, but the sender is the only process that has | |
117 | * all the stats we need. So, if we're a client sender, we do the report. | |
118 | * If we're a server sender, we write the stats on the supplied fd. If | |
119 | * we're the client receiver we read the stats from the supplied fd and do | |
120 | * the report. All processes might also generate a set of debug stats, if | |
121 | * the verbose level is high enough (this is the only thing that the | |
122 | * generator process and the server receiver ever do here). */ | |
c627d613 AT |
123 | static void report(int f) |
124 | { | |
b9f592fb WD |
125 | /* Cache two stats because the read/write code can change it. */ |
126 | int64 total_read = stats.total_read; | |
127 | int64 total_written = stats.total_written; | |
7a6421fa | 128 | time_t t = time(NULL); |
7a6421fa | 129 | |
7bb7058e | 130 | if (do_stats && verbose > 1) { |
5c15e29f | 131 | /* These come out from every process */ |
7bb7058e | 132 | show_malloc_stats(); |
86943126 | 133 | show_flist_stats(); |
5c15e29f MP |
134 | } |
135 | ||
e5fbaa71 S |
136 | if (am_generator) |
137 | return; | |
138 | ||
248fbb8c | 139 | if (am_daemon) { |
a9766ef1 | 140 | log_exit(0, __FILE__, __LINE__); |
83926d3c WD |
141 | if (f == -1 || !am_sender) |
142 | return; | |
248fbb8c AT |
143 | } |
144 | ||
e19452a9 | 145 | if (am_server) { |
3e491682 | 146 | if (am_sender) { |
b9f592fb WD |
147 | write_longint(f, total_read); |
148 | write_longint(f, total_written); | |
149 | write_longint(f, stats.total_size); | |
e19452a9 | 150 | } |
7a6421fa AT |
151 | return; |
152 | } | |
e19452a9 DD |
153 | |
154 | /* this is the client */ | |
d9c7edf6 | 155 | |
3e491682 | 156 | if (!am_sender) { |
58c5c245 WD |
157 | /* Read the first two in opposite order because the meaning of |
158 | * read/write swaps when switching from sender to receiver. */ | |
b9f592fb WD |
159 | total_written = read_longint(f); |
160 | total_read = read_longint(f); | |
a800434a | 161 | stats.total_size = read_longint(f); |
b9f592fb WD |
162 | } else if (write_batch) { |
163 | /* The --read-batch process is going to be a client | |
164 | * receiver, so we need to give it the stats. */ | |
165 | write_longint(batch_fd, total_read); | |
166 | write_longint(batch_fd, total_written); | |
167 | write_longint(batch_fd, stats.total_size); | |
a800434a AT |
168 | } |
169 | ||
170 | if (do_stats) { | |
1f658d42 | 171 | rprintf(FINFO,"\nNumber of files: %d\n", stats.num_files); |
d9c7edf6 WD |
172 | rprintf(FINFO,"Number of files transferred: %d\n", |
173 | stats.num_transferred_files); | |
174 | rprintf(FINFO,"Total file size: %.0f bytes\n", | |
175 | (double)stats.total_size); | |
176 | rprintf(FINFO,"Total transferred file size: %.0f bytes\n", | |
177 | (double)stats.total_transferred_size); | |
178 | rprintf(FINFO,"Literal data: %.0f bytes\n", | |
179 | (double)stats.literal_data); | |
180 | rprintf(FINFO,"Matched data: %.0f bytes\n", | |
181 | (double)stats.matched_data); | |
1f658d42 | 182 | rprintf(FINFO,"File list size: %d\n", stats.flist_size); |
4de2a174 | 183 | rprintf(FINFO,"Total bytes sent: %.0f\n", |
b9f592fb | 184 | (double)total_written); |
4de2a174 | 185 | rprintf(FINFO,"Total bytes received: %.0f\n", |
b9f592fb | 186 | (double)total_read); |
7a6421fa | 187 | } |
d9c7edf6 | 188 | |
e19452a9 | 189 | if (verbose || do_stats) { |
b9f592fb | 190 | rprintf(FINFO, |
4de2a174 | 191 | "\nsent %.0f bytes received %.0f bytes %.2f bytes/sec\n", |
b9f592fb WD |
192 | (double)total_written, (double)total_read, |
193 | (total_written + total_read)/(0.5 + (t - starttime))); | |
194 | rprintf(FINFO, "total size is %.0f speedup is %.2f\n", | |
d9c7edf6 | 195 | (double)stats.total_size, |
b9f592fb | 196 | (double)stats.total_size / (total_written+total_read)); |
e19452a9 | 197 | } |
fc8a6b97 AT |
198 | |
199 | fflush(stdout); | |
200 | fflush(stderr); | |
c627d613 AT |
201 | } |
202 | ||
203 | ||
e5a2b854 MP |
204 | /** |
205 | * If our C library can get malloc statistics, then show them to FINFO | |
206 | **/ | |
207 | static void show_malloc_stats(void) | |
208 | { | |
209 | #ifdef HAVE_MALLINFO | |
210 | struct mallinfo mi; | |
211 | ||
212 | mi = mallinfo(); | |
213 | ||
ce672562 | 214 | rprintf(FINFO, "\n" RSYNC_NAME "[%d] (%s%s%s) heap statistics:\n", |
5c15e29f MP |
215 | getpid(), |
216 | am_server ? "server " : "", | |
217 | am_daemon ? "daemon " : "", | |
b695f242 | 218 | who_am_i()); |
e5a2b854 MP |
219 | rprintf(FINFO, " arena: %10d (bytes from sbrk)\n", mi.arena); |
220 | rprintf(FINFO, " ordblks: %10d (chunks not in use)\n", mi.ordblks); | |
221 | rprintf(FINFO, " smblks: %10d\n", mi.smblks); | |
222 | rprintf(FINFO, " hblks: %10d (chunks from mmap)\n", mi.hblks); | |
223 | rprintf(FINFO, " hblkhd: %10d (bytes from mmap)\n", mi.hblkhd); | |
7b74bba1 S |
224 | rprintf(FINFO, " allmem: %10d (bytes from sbrk + mmap)\n", |
225 | mi.arena + mi.hblkhd); | |
e5a2b854 MP |
226 | rprintf(FINFO, " usmblks: %10d\n", mi.usmblks); |
227 | rprintf(FINFO, " fsmblks: %10d\n", mi.fsmblks); | |
228 | rprintf(FINFO, " uordblks: %10d (bytes used)\n", mi.uordblks); | |
229 | rprintf(FINFO, " fordblks: %10d (bytes free)\n", mi.fordblks); | |
230 | rprintf(FINFO, " keepcost: %10d (bytes in releasable chunk)\n", mi.keepcost); | |
231 | #endif /* HAVE_MALLINFO */ | |
232 | } | |
233 | ||
234 | ||
0882faa2 | 235 | /* Start the remote shell. cmd may be NULL to use the default. */ |
6c2e5b56 WD |
236 | static pid_t do_cmd(char *cmd, char *machine, char *user, char *path, |
237 | int *f_in, int *f_out) | |
c627d613 | 238 | { |
6c2e5b56 | 239 | int i, argc = 0; |
887e553f | 240 | char *args[MAX_ARGS]; |
19b27a48 | 241 | pid_t ret; |
6c2e5b56 | 242 | char *tok, *dir = NULL; |
bb4aa89c | 243 | int dash_l_set = 0; |
366345fe | 244 | |
088aac85 | 245 | if (!read_batch && !local_server) { |
9af87151 | 246 | char *rsh_env = getenv(RSYNC_RSH_ENV); |
366345fe | 247 | if (!cmd) |
9af87151 | 248 | cmd = rsh_env; |
366345fe AT |
249 | if (!cmd) |
250 | cmd = RSYNC_RSH; | |
251 | cmd = strdup(cmd); | |
d9c7edf6 | 252 | if (!cmd) |
366345fe AT |
253 | goto oom; |
254 | ||
887e553f | 255 | for (tok = strtok(cmd, " "); tok; tok = strtok(NULL, " ")) { |
e7a392c7 WD |
256 | /* Comparison leaves rooms for server_options(). */ |
257 | if (argc >= MAX_ARGS - 100) { | |
258 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
887e553f WD |
259 | exit_cleanup(RERR_SYNTAX); |
260 | } | |
366345fe | 261 | args[argc++] = tok; |
887e553f | 262 | } |
c627d613 | 263 | |
d9c7edf6 | 264 | /* check to see if we've already been given '-l user' in |
9af87151 | 265 | * the remote-shell command */ |
bb4aa89c WD |
266 | for (i = 0; i < argc-1; i++) { |
267 | if (!strcmp(args[i], "-l") && args[i+1][0] != '-') | |
268 | dash_l_set = 1; | |
269 | } | |
270 | ||
7b8356d0 | 271 | #if HAVE_REMSH |
366345fe AT |
272 | /* remsh (on HPUX) takes the arguments the other way around */ |
273 | args[argc++] = machine; | |
bb4aa89c | 274 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
275 | args[argc++] = "-l"; |
276 | args[argc++] = user; | |
277 | } | |
7b8356d0 | 278 | #else |
bb4aa89c | 279 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
280 | args[argc++] = "-l"; |
281 | args[argc++] = user; | |
282 | } | |
283 | args[argc++] = machine; | |
7b8356d0 | 284 | #endif |
c627d613 | 285 | |
366345fe | 286 | args[argc++] = rsync_path; |
c627d613 | 287 | |
9af87151 | 288 | if (blocking_io < 0) { |
90e22f4b WD |
289 | char *cp; |
290 | if ((cp = strrchr(cmd, '/')) != NULL) | |
291 | cp++; | |
292 | else | |
293 | cp = cmd; | |
294 | if (strcmp(cp, "rsh") == 0 || strcmp(cp, "remsh") == 0) | |
295 | blocking_io = 1; | |
66b71163 | 296 | } |
e384bfbd | 297 | |
93689aa5 | 298 | server_options(args,&argc); |
e7a392c7 WD |
299 | |
300 | if (argc >= MAX_ARGS - 2) { | |
301 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
302 | exit_cleanup(RERR_SYNTAX); | |
303 | } | |
366345fe | 304 | } |
c627d613 | 305 | |
366345fe | 306 | args[argc++] = "."; |
76076c4b | 307 | |
d9c7edf6 | 308 | if (!daemon_over_rsh && path && *path) |
366345fe | 309 | args[argc++] = path; |
c627d613 | 310 | |
366345fe | 311 | args[argc] = NULL; |
c627d613 | 312 | |
366345fe | 313 | if (verbose > 3) { |
9486289c | 314 | rprintf(FINFO,"cmd="); |
e7a392c7 | 315 | for (i = 0; i < argc; i++) |
9486289c AT |
316 | rprintf(FINFO,"%s ",args[i]); |
317 | rprintf(FINFO,"\n"); | |
366345fe AT |
318 | } |
319 | ||
c0d8e84c WD |
320 | if (read_batch) { |
321 | int from_gen_pipe[2]; | |
322 | if (fd_pair(from_gen_pipe) < 0) { | |
323 | rsyserr(FERROR, errno, "pipe"); | |
324 | exit_cleanup(RERR_IPC); | |
325 | } | |
326 | batch_gen_fd = from_gen_pipe[0]; | |
327 | *f_out = from_gen_pipe[1]; | |
328 | *f_in = batch_fd; | |
329 | ret = -1; /* no child pid */ | |
330 | } else if (local_server) { | |
b1df18d7 WD |
331 | /* If the user didn't request --[no-]whole-file, force |
332 | * it on, but only if we're not batch processing. */ | |
c0d8e84c | 333 | if (whole_file < 0 && !write_batch) |
b1df18d7 | 334 | whole_file = 1; |
25d34a5c | 335 | ret = local_child(argc, args, f_in, f_out, child_main); |
c0d8e84c | 336 | } else |
366345fe | 337 | ret = piped_child(args,f_in,f_out); |
c627d613 | 338 | |
3a69fad0 WD |
339 | if (dir) |
340 | free(dir); | |
82306bf6 | 341 | |
366345fe | 342 | return ret; |
c627d613 AT |
343 | |
344 | oom: | |
366345fe AT |
345 | out_of_memory("do_cmd"); |
346 | return 0; /* not reached */ | |
c627d613 AT |
347 | } |
348 | ||
349 | ||
c627d613 AT |
350 | static char *get_local_name(struct file_list *flist,char *name) |
351 | { | |
7a6421fa | 352 | STRUCT_STAT st; |
87cc45e1 | 353 | int e; |
c627d613 | 354 | |
c95da96a | 355 | if (verbose > 2) |
d9c7edf6 | 356 | rprintf(FINFO,"get_local_name count=%d %s\n", |
1f0610ef DD |
357 | flist->count, NS(name)); |
358 | ||
d9c7edf6 | 359 | if (!name) |
1f0610ef | 360 | return NULL; |
c95da96a | 361 | |
1ff5450d AT |
362 | if (do_stat(name,&st) == 0) { |
363 | if (S_ISDIR(st.st_mode)) { | |
59187666 | 364 | if (!push_dir(name)) { |
982e05bb WD |
365 | rsyserr(FERROR, errno, "push_dir#1 %s failed", |
366 | full_fname(name)); | |
65417579 | 367 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
368 | } |
369 | return NULL; | |
370 | } | |
371 | if (flist->count > 1) { | |
372 | rprintf(FERROR,"ERROR: destination must be a directory when copying more than 1 file\n"); | |
65417579 | 373 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
374 | } |
375 | return name; | |
376 | } | |
377 | ||
87cc45e1 | 378 | if (flist->count <= 1 && ((e = strlen(name)) <= 1 || name[e-1] != '/')) |
1ff5450d AT |
379 | return name; |
380 | ||
1ff5450d | 381 | if (do_mkdir(name,0777 & ~orig_umask) != 0) { |
982e05bb | 382 | rsyserr(FERROR, errno, "mkdir %s failed", full_fname(name)); |
65417579 | 383 | exit_cleanup(RERR_FILEIO); |
e5a96f0f WD |
384 | } |
385 | if (verbose > 0) | |
386 | rprintf(FINFO, "created directory %s\n", name); | |
387 | ||
388 | if (dry_run) { | |
389 | dry_run++; | |
390 | return NULL; | |
1ff5450d AT |
391 | } |
392 | ||
59187666 | 393 | if (!push_dir(name)) { |
982e05bb WD |
394 | rsyserr(FERROR, errno, "push_dir#2 %s failed", |
395 | full_fname(name)); | |
65417579 | 396 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
397 | } |
398 | ||
399 | return NULL; | |
c627d613 AT |
400 | } |
401 | ||
402 | ||
9486289c | 403 | static void do_server_sender(int f_in, int f_out, int argc,char *argv[]) |
c627d613 | 404 | { |
7a6421fa AT |
405 | int i; |
406 | struct file_list *flist; | |
407 | char *dir = argv[0]; | |
c627d613 | 408 | |
45e08edb WD |
409 | if (verbose > 2) { |
410 | rprintf(FINFO, "server_sender starting pid=%ld\n", | |
411 | (long)getpid()); | |
412 | } | |
d9c7edf6 | 413 | |
2adbcdc7 | 414 | if (am_daemon && lp_write_only(module_id)) { |
7a92ded3 WD |
415 | rprintf(FERROR, "ERROR: module is write only\n"); |
416 | exit_cleanup(RERR_SYNTAX); | |
417 | return; | |
418 | } | |
419 | ||
59187666 | 420 | if (!relative_paths && !push_dir(dir)) { |
982e05bb WD |
421 | rsyserr(FERROR, errno, "push_dir#3 %s failed", |
422 | full_fname(dir)); | |
65417579 | 423 | exit_cleanup(RERR_FILESELECT); |
7a6421fa AT |
424 | } |
425 | argc--; | |
426 | argv++; | |
d9c7edf6 | 427 | |
7a6421fa AT |
428 | if (strcmp(dir,".")) { |
429 | int l = strlen(dir); | |
d9c7edf6 | 430 | if (strcmp(dir,"/") == 0) |
7a6421fa | 431 | l = 0; |
e7a392c7 | 432 | for (i = 0; i < argc; i++) |
7a6421fa AT |
433 | argv[i] += l+1; |
434 | } | |
c627d613 | 435 | |
7a6421fa | 436 | if (argc == 0 && recurse) { |
e1f67417 | 437 | argc = 1; |
7a6421fa AT |
438 | argv--; |
439 | argv[0] = "."; | |
440 | } | |
d9c7edf6 | 441 | |
7a6421fa | 442 | flist = send_file_list(f_out,argc,argv); |
8d9dc9f9 AT |
443 | if (!flist || flist->count == 0) { |
444 | exit_cleanup(0); | |
445 | } | |
446 | ||
da3478b2 WD |
447 | io_start_buffering_in(); |
448 | io_start_buffering_out(); | |
449 | ||
7a6421fa | 450 | send_files(flist,f_out,f_in); |
f1e3656e | 451 | io_flush(FULL_FLUSH); |
7a6421fa | 452 | report(f_out); |
d04e9c51 | 453 | if (protocol_version >= 24) { |
d9c7edf6 | 454 | /* final goodbye message */ |
64c3523a WD |
455 | read_int(f_in); |
456 | } | |
f1e3656e | 457 | io_flush(FULL_FLUSH); |
7a6421fa | 458 | exit_cleanup(0); |
c627d613 AT |
459 | } |
460 | ||
461 | ||
dc5ddbcc AT |
462 | static int do_recv(int f_in,int f_out,struct file_list *flist,char *local_name) |
463 | { | |
d186eb1a | 464 | int pid; |
e1f67417 | 465 | int status = 0; |
41cfde6b | 466 | int error_pipe[2], name_pipe[2]; |
7162c65d | 467 | BOOL need_name_pipe = (basis_dir[0] || partial_dir) && !dry_run; |
dc5ddbcc | 468 | |
bb6721dc WD |
469 | /* The receiving side mustn't obey this, or an existing symlink that |
470 | * points to an identical file won't be replaced by the referent. */ | |
471 | copy_links = 0; | |
472 | ||
d186eb1a AT |
473 | if (preserve_hard_links) |
474 | init_hard_links(flist); | |
dc5ddbcc | 475 | |
6957ae33 AT |
476 | if (!delete_after) { |
477 | /* I moved this here from recv_files() to prevent a race condition */ | |
58c5c245 | 478 | if (recurse && delete_mode && !local_name && flist->count > 0) |
6957ae33 | 479 | delete_files(flist); |
6957ae33 AT |
480 | } |
481 | ||
41cfde6b WD |
482 | if (fd_pair(error_pipe) < 0 |
483 | || (need_name_pipe && fd_pair(name_pipe) < 0)) { | |
ab759cd2 | 484 | rsyserr(FERROR, errno, "pipe failed in do_recv"); |
c8f2f857 | 485 | exit_cleanup(RERR_IPC); |
554e0a8d | 486 | } |
d9c7edf6 | 487 | |
f1e3656e | 488 | io_flush(NORMAL_FLUSH); |
c6e7fcb4 | 489 | |
ba449e44 | 490 | if ((pid = do_fork()) == -1) { |
c8f2f857 | 491 | rsyserr(FERROR, errno, "fork failed in do_recv"); |
ba449e44 WD |
492 | exit_cleanup(RERR_IPC); |
493 | } | |
494 | ||
495 | if (pid == 0) { | |
554e0a8d | 496 | close(error_pipe[0]); |
41cfde6b WD |
497 | if (need_name_pipe) { |
498 | close(name_pipe[1]); | |
499 | set_blocking(name_pipe[0]); | |
500 | } else | |
501 | name_pipe[0] = -1; | |
3a69fad0 WD |
502 | if (f_in != f_out) |
503 | close(f_out); | |
e08c9610 | 504 | |
554e0a8d | 505 | /* we can't let two processes write to the socket at one time */ |
9eeb3b9c | 506 | close_multiplexing_out(); |
554e0a8d AT |
507 | |
508 | /* set place to send errors */ | |
f1e3656e | 509 | set_msg_fd_out(error_pipe[1]); |
554e0a8d | 510 | |
41cfde6b | 511 | recv_files(f_in, flist, local_name, name_pipe[0]); |
f1e3656e | 512 | io_flush(FULL_FLUSH); |
ba5e128d | 513 | report(f_in); |
e08c9610 | 514 | |
f1e3656e WD |
515 | send_msg(MSG_DONE, "", 0); |
516 | io_flush(FULL_FLUSH); | |
4a748188 | 517 | /* finally we go to sleep until our parent kills us |
9af87151 WD |
518 | * with a USR2 signal. We sleep for a short time as on |
519 | * some OSes a signal won't interrupt a sleep! */ | |
f1e3656e WD |
520 | while (1) |
521 | msleep(20); | |
d186eb1a | 522 | } |
dc5ddbcc | 523 | |
b695f242 | 524 | am_generator = 1; |
9eeb3b9c | 525 | close_multiplexing_in(); |
b9f592fb WD |
526 | if (write_batch) |
527 | stop_write_batch(); | |
b695f242 | 528 | |
554e0a8d | 529 | close(error_pipe[1]); |
41cfde6b WD |
530 | if (need_name_pipe) { |
531 | close(name_pipe[0]); | |
532 | set_nonblocking(name_pipe[1]); | |
533 | } else | |
534 | name_pipe[1] = -1; | |
3a69fad0 WD |
535 | if (f_in != f_out) |
536 | close(f_in); | |
e1b3d5c4 | 537 | |
da3478b2 | 538 | io_start_buffering_out(); |
b3e10ed7 | 539 | |
f1e3656e | 540 | set_msg_fd_in(error_pipe[0]); |
554e0a8d | 541 | |
41cfde6b | 542 | generate_files(f_out, flist, local_name, name_pipe[1]); |
8d9dc9f9 | 543 | |
e5fbaa71 | 544 | report(-1); |
f1e3656e | 545 | io_flush(FULL_FLUSH); |
d04e9c51 | 546 | if (protocol_version >= 24) { |
8ada7518 AT |
547 | /* send a final goodbye message */ |
548 | write_int(f_out, -1); | |
549 | } | |
f1e3656e | 550 | io_flush(FULL_FLUSH); |
8ada7518 | 551 | |
f1e3656e | 552 | set_msg_fd_in(-1); |
089a2435 | 553 | kill(pid, SIGUSR2); |
d79d1c69 | 554 | wait_process(pid, &status); |
d186eb1a | 555 | return status; |
dc5ddbcc AT |
556 | } |
557 | ||
c627d613 | 558 | |
9486289c | 559 | static void do_server_recv(int f_in, int f_out, int argc,char *argv[]) |
c627d613 | 560 | { |
7a6421fa AT |
561 | int status; |
562 | struct file_list *flist; | |
6c2e5b56 | 563 | char *local_name = NULL; |
7a6421fa | 564 | char *dir = NULL; |
07bff66f WD |
565 | int save_verbose = verbose; |
566 | ||
567 | if (filesfrom_fd >= 0) { | |
568 | /* We can't mix messages with files-from data on the socket, | |
569 | * so temporarily turn off verbose messages. */ | |
570 | verbose = 0; | |
571 | } | |
f0fca04e | 572 | |
45e08edb WD |
573 | if (verbose > 2) { |
574 | rprintf(FINFO, "server_recv(%d) starting pid=%ld\n", | |
575 | argc, (long)getpid()); | |
576 | } | |
09b7f5db | 577 | |
2adbcdc7 | 578 | if (am_daemon && lp_read_only(module_id)) { |
09b7f5db AT |
579 | rprintf(FERROR,"ERROR: module is read only\n"); |
580 | exit_cleanup(RERR_SYNTAX); | |
581 | return; | |
582 | } | |
583 | ||
d9c7edf6 | 584 | |
7a6421fa AT |
585 | if (argc > 0) { |
586 | dir = argv[0]; | |
587 | argc--; | |
588 | argv++; | |
59187666 | 589 | if (!am_daemon && !push_dir(dir)) { |
982e05bb WD |
590 | rsyserr(FERROR, errno, "push_dir#4 %s failed", |
591 | full_fname(dir)); | |
65417579 | 592 | exit_cleanup(RERR_FILESELECT); |
d9c7edf6 | 593 | } |
7a6421fa | 594 | } |
c627d613 | 595 | |
da3478b2 | 596 | io_start_buffering_in(); |
b33b791e | 597 | if (delete_mode && !delete_excluded) |
7a6421fa | 598 | recv_exclude_list(f_in); |
c627d613 | 599 | |
7c2a9e76 | 600 | if (filesfrom_fd >= 0) { |
07bff66f WD |
601 | /* We need to send the files-from names to the sender at the |
602 | * same time that we receive the file-list from them, so we | |
603 | * need the IO routines to automatically write out the names | |
604 | * onto our f_out socket as we read the file-list. This | |
605 | * avoids both deadlock and extra delays/buffers. */ | |
7c2a9e76 WD |
606 | io_set_filesfrom_fds(filesfrom_fd, f_out); |
607 | filesfrom_fd = -1; | |
608 | } | |
609 | ||
b9f592fb | 610 | flist = recv_file_list(f_in); |
07bff66f | 611 | verbose = save_verbose; |
4c36a13e AT |
612 | if (!flist) { |
613 | rprintf(FERROR,"server_recv: recv_file_list error\n"); | |
65417579 | 614 | exit_cleanup(RERR_FILESELECT); |
7a6421fa | 615 | } |
d9c7edf6 WD |
616 | |
617 | if (argc > 0) { | |
7a6421fa AT |
618 | if (strcmp(dir,".")) { |
619 | argv[0] += strlen(dir); | |
3a69fad0 WD |
620 | if (argv[0][0] == '/') |
621 | argv[0]++; | |
7a6421fa AT |
622 | } |
623 | local_name = get_local_name(flist,argv[0]); | |
624 | } | |
c627d613 | 625 | |
7a6421fa AT |
626 | status = do_recv(f_in,f_out,flist,local_name); |
627 | exit_cleanup(status); | |
c627d613 AT |
628 | } |
629 | ||
630 | ||
734a94a2 | 631 | int child_main(int argc, char *argv[]) |
25d34a5c MP |
632 | { |
633 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); | |
734a94a2 | 634 | return 0; |
25d34a5c MP |
635 | } |
636 | ||
637 | ||
9486289c | 638 | void start_server(int f_in, int f_out, int argc, char *argv[]) |
366345fe | 639 | { |
f0359dd0 AT |
640 | set_nonblocking(f_in); |
641 | set_nonblocking(f_out); | |
642 | ||
da3478b2 WD |
643 | io_set_sock_fds(f_in, f_out); |
644 | setup_protocol(f_out, f_in); | |
645 | ||
d04e9c51 | 646 | if (protocol_version >= 23) |
da3478b2 | 647 | io_start_multiplex_out(); |
7a6421fa | 648 | |
7a6421fa | 649 | if (am_sender) { |
83926d3c | 650 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
9b3318b0 | 651 | |
b9f592fb WD |
652 | recv_exclude_list(f_in); |
653 | if (cvs_exclude) | |
654 | add_cvs_excludes(); | |
7a6421fa AT |
655 | do_server_sender(f_in, f_out, argc, argv); |
656 | } else { | |
657 | do_server_recv(f_in, f_out, argc, argv); | |
658 | } | |
659 | exit_cleanup(0); | |
366345fe AT |
660 | } |
661 | ||
0ba48136 MP |
662 | |
663 | /* | |
664 | * This is called once the connection has been negotiated. It is used | |
665 | * for rsyncd, remote-shell, and local connections. | |
666 | */ | |
19b27a48 | 667 | int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[]) |
9486289c | 668 | { |
088aac85 | 669 | struct file_list *flist = NULL; |
9486289c AT |
670 | int status = 0, status2 = 0; |
671 | char *local_name = NULL; | |
19b27a48 AT |
672 | |
673 | cleanup_child_pid = pid; | |
67a28eb2 | 674 | if (!read_batch) { |
b9f592fb WD |
675 | set_nonblocking(f_in); |
676 | set_nonblocking(f_out); | |
677 | } | |
f0359dd0 | 678 | |
da3478b2 | 679 | io_set_sock_fds(f_in, f_out); |
6d7b6081 AT |
680 | setup_protocol(f_out,f_in); |
681 | ||
b9f592fb | 682 | if (protocol_version >= 23 && !read_batch) |
da3478b2 | 683 | io_start_multiplex_in(); |
d9c7edf6 | 684 | |
18882701 WD |
685 | /* We set our stderr file handle to blocking because ssh might have |
686 | * set it to non-blocking. This can be particularly troublesome if | |
687 | * stderr is a clone of stdout, because ssh would have set our stdout | |
688 | * to non-blocking at the same time (which can easily cause us to lose | |
689 | * output from our print statements). This kluge shouldn't cause ssh | |
690 | * any problems for how we use it. Note also that we delayed setting | |
691 | * this until after the above protocol setup so that we know for sure | |
692 | * that ssh is done twiddling its file descriptors. */ | |
693 | set_blocking(STDERR_FILENO); | |
694 | ||
9486289c | 695 | if (am_sender) { |
83926d3c | 696 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
da3478b2 | 697 | io_start_buffering_out(); |
a0a33ee5 WD |
698 | if (!remote_filesfrom_file) |
699 | set_msg_fd_in(f_in); | |
9486289c AT |
700 | if (cvs_exclude) |
701 | add_cvs_excludes(); | |
d9c7edf6 | 702 | if (delete_mode && !delete_excluded) |
9486289c | 703 | send_exclude_list(f_out); |
7c2a9e76 WD |
704 | if (remote_filesfrom_file) |
705 | filesfrom_fd = f_in; | |
b9f592fb WD |
706 | |
707 | if (write_batch) | |
708 | start_write_batch(f_out); | |
64c3523a | 709 | if (!read_batch) /* don't write to pipe */ |
d9c7edf6 | 710 | flist = send_file_list(f_out,argc,argv); |
a0a33ee5 | 711 | set_msg_fd_in(-1); |
d9c7edf6 | 712 | if (verbose > 3) |
9486289c | 713 | rprintf(FINFO,"file list sent\n"); |
e1b3d5c4 | 714 | |
f1e3656e | 715 | io_flush(NORMAL_FLUSH); |
9486289c | 716 | send_files(flist,f_out,f_in); |
f1e3656e | 717 | io_flush(FULL_FLUSH); |
d04e9c51 | 718 | if (protocol_version >= 24) { |
d9c7edf6 | 719 | /* final goodbye message */ |
6c65e146 AT |
720 | read_int(f_in); |
721 | } | |
9486289c AT |
722 | if (pid != -1) { |
723 | if (verbose > 3) | |
08a740ff | 724 | rprintf(FINFO,"client_run waiting on %d\n", (int) pid); |
f1e3656e | 725 | io_flush(FULL_FLUSH); |
d79d1c69 | 726 | wait_process(pid, &status); |
9486289c | 727 | } |
3d382777 | 728 | report(-1); |
f1e3656e | 729 | io_flush(FULL_FLUSH); |
9486289c AT |
730 | exit_cleanup(status); |
731 | } | |
f7632fc6 | 732 | |
1082b52b | 733 | if (argc == 0) |
27e3e9c9 | 734 | list_only = 1; |
d9c7edf6 | 735 | |
1082b52b | 736 | if (!read_batch) |
d9c7edf6 WD |
737 | send_exclude_list(f_out); |
738 | ||
7c2a9e76 WD |
739 | if (filesfrom_fd >= 0) { |
740 | io_set_filesfrom_fds(filesfrom_fd, f_out); | |
741 | filesfrom_fd = -1; | |
742 | } | |
743 | ||
b9f592fb WD |
744 | if (write_batch) |
745 | start_write_batch(f_in); | |
9486289c AT |
746 | flist = recv_file_list(f_in); |
747 | if (!flist || flist->count == 0) { | |
796d484b | 748 | rprintf(FINFO, "client: nothing to do: " |
d9c7edf6 WD |
749 | "perhaps you need to specify some filenames or " |
750 | "the --recursive option?\n"); | |
9486289c AT |
751 | exit_cleanup(0); |
752 | } | |
d9c7edf6 | 753 | |
9486289c | 754 | local_name = get_local_name(flist,argv[0]); |
d9c7edf6 | 755 | |
9486289c | 756 | status2 = do_recv(f_in,f_out,flist,local_name); |
d9c7edf6 | 757 | |
9486289c | 758 | if (pid != -1) { |
8d9dc9f9 | 759 | if (verbose > 3) |
08a740ff | 760 | rprintf(FINFO,"client_run2 waiting on %d\n", (int) pid); |
f1e3656e | 761 | io_flush(FULL_FLUSH); |
d79d1c69 | 762 | wait_process(pid, &status); |
9486289c | 763 | } |
d9c7edf6 | 764 | |
ff81e809 | 765 | return MAX(status, status2); |
9486289c AT |
766 | } |
767 | ||
7169bb4a MP |
768 | static int copy_argv (char *argv[]) |
769 | { | |
770 | int i; | |
771 | ||
772 | for (i = 0; argv[i]; i++) { | |
773 | if (!(argv[i] = strdup(argv[i]))) { | |
774 | rprintf (FERROR, "out of memory at %s(%d)\n", | |
775 | __FILE__, __LINE__); | |
776 | return RERR_MALLOC; | |
777 | } | |
778 | } | |
779 | ||
780 | return 0; | |
781 | } | |
782 | ||
783 | ||
c1a04ecb | 784 | /** |
0ba48136 MP |
785 | * Start a client for either type of remote connection. Work out |
786 | * whether the arguments request a remote shell or rsyncd connection, | |
787 | * and call the appropriate connection function, then run_client. | |
0b4af330 MP |
788 | * |
789 | * Calls either start_socket_client (for sockets) or do_cmd and | |
790 | * client_run (for ssh). | |
c1a04ecb | 791 | **/ |
fc8a6b97 | 792 | static int start_client(int argc, char *argv[]) |
5d6bcd44 AT |
793 | { |
794 | char *p; | |
795 | char *shell_machine = NULL; | |
796 | char *shell_path = NULL; | |
797 | char *shell_user = NULL; | |
19b27a48 AT |
798 | int ret; |
799 | pid_t pid; | |
5d6bcd44 | 800 | int f_in,f_out; |
7169bb4a MP |
801 | int rc; |
802 | ||
803 | /* Don't clobber argv[] so that ps(1) can still show the right | |
d9c7edf6 | 804 | * command line. */ |
75aeac44 | 805 | if ((rc = copy_argv(argv))) |
7169bb4a | 806 | return rc; |
5d6bcd44 | 807 | |
75aeac44 | 808 | /* rsync:// always uses rsync server over direct socket connection */ |
b9f592fb WD |
809 | if (strncasecmp(URL_PREFIX, argv[0], strlen(URL_PREFIX)) == 0 |
810 | && !read_batch) { | |
f7632fc6 AT |
811 | char *host, *path; |
812 | ||
7169bb4a | 813 | host = argv[0] + strlen(URL_PREFIX); |
f7632fc6 AT |
814 | p = strchr(host,'/'); |
815 | if (p) { | |
50b31539 | 816 | *p = '\0'; |
f7632fc6 | 817 | path = p+1; |
50b31539 | 818 | } else |
a125c82a | 819 | path = ""; |
50b31539 WD |
820 | if (*host == '[' && (p = strchr(host, ']')) != NULL) { |
821 | host++; | |
822 | *p++ = '\0'; | |
823 | if (*p != ':') | |
824 | p = NULL; | |
825 | } else | |
826 | p = strchr(host, ':'); | |
2acf81eb DD |
827 | if (p) { |
828 | rsync_port = atoi(p+1); | |
50b31539 | 829 | *p = '\0'; |
cf510ad2 | 830 | } |
f7632fc6 AT |
831 | return start_socket_client(host, path, argc-1, argv+1); |
832 | } | |
833 | ||
d16c245f | 834 | if (!read_batch) { /* for read_batch, NO source is specified */ |
a125c82a | 835 | p = find_colon(argv[0]); |
d16c245f | 836 | if (p) { /* source is remote */ |
7c2a9e76 WD |
837 | if (remote_filesfrom_file |
838 | && remote_filesfrom_file != files_from + 1 | |
839 | && strncmp(files_from, argv[0], p-argv[0]+1) != 0) { | |
840 | rprintf(FERROR, | |
50b31539 | 841 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
842 | exit_cleanup(RERR_SYNTAX); |
843 | } | |
d9c7edf6 WD |
844 | if (p[1] == ':') { /* double colon */ |
845 | *p = 0; | |
846 | if (!shell_cmd) { | |
847 | return start_socket_client(argv[0], p+2, | |
848 | argc-1, argv+1); | |
849 | } | |
850 | p++; | |
851 | daemon_over_rsh = 1; | |
75aeac44 | 852 | } |
3591c066 | 853 | |
d16c245f | 854 | if (argc < 1) { /* destination required */ |
d9c7edf6 WD |
855 | usage(FERROR); |
856 | exit_cleanup(RERR_SYNTAX); | |
857 | } | |
a125c82a | 858 | |
d9c7edf6 WD |
859 | am_sender = 0; |
860 | *p = 0; | |
861 | shell_machine = argv[0]; | |
862 | shell_path = p+1; | |
d9c7edf6 | 863 | argv++; |
d16c245f | 864 | } else { /* source is local */ |
d9c7edf6 WD |
865 | am_sender = 1; |
866 | ||
867 | /* rsync:// destination uses rsync server over direct socket */ | |
868 | if (strncasecmp(URL_PREFIX, argv[argc-1], strlen(URL_PREFIX)) == 0) { | |
869 | char *host, *path; | |
870 | ||
871 | host = argv[argc-1] + strlen(URL_PREFIX); | |
872 | p = strchr(host,'/'); | |
873 | if (p) { | |
50b31539 | 874 | *p = '\0'; |
d9c7edf6 | 875 | path = p+1; |
50b31539 | 876 | } else |
d9c7edf6 | 877 | path = ""; |
50b31539 WD |
878 | if (*host == '[' && (p = strchr(host, ']')) != NULL) { |
879 | host++; | |
880 | *p++ = '\0'; | |
881 | if (*p != ':') | |
882 | p = NULL; | |
883 | } else | |
884 | p = strchr(host, ':'); | |
d9c7edf6 WD |
885 | if (p) { |
886 | rsync_port = atoi(p+1); | |
50b31539 | 887 | *p = '\0'; |
cf510ad2 | 888 | } |
d9c7edf6 | 889 | return start_socket_client(host, path, argc-1, argv); |
a125c82a | 890 | } |
d9c7edf6 | 891 | |
d16c245f | 892 | p = find_colon(argv[argc-1]); /* look in dest arg */ |
7c2a9e76 WD |
893 | if (p && remote_filesfrom_file |
894 | && remote_filesfrom_file != files_from + 1 | |
895 | && strncmp(files_from, argv[argc-1], p-argv[argc-1]+1) != 0) { | |
896 | rprintf(FERROR, | |
50b31539 | 897 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
898 | exit_cleanup(RERR_SYNTAX); |
899 | } | |
d16c245f | 900 | if (!p) { /* no colon found, so src & dest are local */ |
d9c7edf6 | 901 | local_server = 1; |
7c2a9e76 WD |
902 | if (remote_filesfrom_file) { |
903 | rprintf(FERROR, | |
50b31539 | 904 | "--files-from cannot be remote when the transfer is local\n"); |
7c2a9e76 WD |
905 | exit_cleanup(RERR_SYNTAX); |
906 | } | |
d9c7edf6 | 907 | } else if (p[1] == ':') { /* double colon */ |
a125c82a | 908 | *p = 0; |
d9c7edf6 WD |
909 | if (!shell_cmd) { |
910 | return start_socket_client(argv[argc-1], p+2, | |
911 | argc-1, argv); | |
912 | } | |
913 | p++; | |
914 | daemon_over_rsh = 1; | |
a125c82a | 915 | } |
a125c82a | 916 | |
d9c7edf6 WD |
917 | if (argc < 2) { |
918 | usage(FERROR); | |
919 | exit_cleanup(RERR_SYNTAX); | |
75aeac44 | 920 | } |
3591c066 | 921 | |
d9c7edf6 WD |
922 | if (local_server) { |
923 | shell_machine = NULL; | |
924 | shell_path = argv[argc-1]; | |
925 | } else { | |
926 | *p = 0; | |
927 | shell_machine = argv[argc-1]; | |
928 | shell_path = p+1; | |
929 | } | |
5d6bcd44 | 930 | } |
d16c245f WD |
931 | argc--; |
932 | } else { /* read_batch */ | |
d9c7edf6 WD |
933 | local_server = 1; |
934 | shell_path = argv[argc-1]; | |
b9f592fb WD |
935 | if (find_colon(shell_path)) { |
936 | rprintf(FERROR, "remote destination is not allowed with --read-batch\n"); | |
937 | exit_cleanup(RERR_SYNTAX); | |
938 | } | |
6902ed17 MP |
939 | } |
940 | ||
5d6bcd44 | 941 | if (shell_machine) { |
6fc048f4 | 942 | p = strrchr(shell_machine,'@'); |
5d6bcd44 AT |
943 | if (p) { |
944 | *p = 0; | |
945 | shell_user = shell_machine; | |
946 | shell_machine = p+1; | |
947 | } | |
948 | } | |
949 | ||
950 | if (verbose > 3) { | |
9486289c | 951 | rprintf(FINFO,"cmd=%s machine=%s user=%s path=%s\n", |
5d6bcd44 AT |
952 | shell_cmd?shell_cmd:"", |
953 | shell_machine?shell_machine:"", | |
954 | shell_user?shell_user:"", | |
955 | shell_path?shell_path:""); | |
956 | } | |
d9c7edf6 | 957 | |
d16c245f | 958 | /* for remote source, only single dest arg can remain ... */ |
f7632fc6 | 959 | if (!am_sender && argc > 1) { |
5d6bcd44 | 960 | usage(FERROR); |
65417579 | 961 | exit_cleanup(RERR_SYNTAX); |
5d6bcd44 | 962 | } |
27e3e9c9 | 963 | |
d16c245f WD |
964 | /* ... or no dest at all */ |
965 | if (!am_sender && argc == 0) { | |
27e3e9c9 AT |
966 | list_only = 1; |
967 | } | |
d9c7edf6 | 968 | |
75aeac44 WD |
969 | pid = do_cmd(shell_cmd,shell_machine,shell_user,shell_path, |
970 | &f_in,&f_out); | |
971 | ||
972 | /* if we're running an rsync server on the remote host over a | |
9af87151 | 973 | * remote shell command, we need to do the RSYNCD protocol first */ |
75aeac44 WD |
974 | if (daemon_over_rsh) { |
975 | int tmpret; | |
976 | tmpret = start_inband_exchange(shell_user, shell_path, | |
977 | f_in, f_out, argc); | |
978 | if (tmpret < 0) | |
979 | return tmpret; | |
980 | } | |
981 | ||
fc8a6b97 AT |
982 | ret = client_run(f_in, f_out, pid, argc, argv); |
983 | ||
984 | fflush(stdout); | |
985 | fflush(stderr); | |
986 | ||
987 | return ret; | |
5d6bcd44 AT |
988 | } |
989 | ||
366345fe | 990 | |
067669da WD |
991 | static RETSIGTYPE sigusr1_handler(UNUSED(int val)) |
992 | { | |
65417579 | 993 | exit_cleanup(RERR_SIGNAL); |
82306bf6 AT |
994 | } |
995 | ||
067669da WD |
996 | static RETSIGTYPE sigusr2_handler(UNUSED(int val)) |
997 | { | |
19b27a48 | 998 | if (log_got_error) _exit(RERR_PARTIAL); |
8b35435f AT |
999 | _exit(0); |
1000 | } | |
1001 | ||
067669da WD |
1002 | static RETSIGTYPE sigchld_handler(UNUSED(int val)) |
1003 | { | |
029c1713 | 1004 | #ifdef WNOHANG |
ee7118a8 DD |
1005 | int cnt, status; |
1006 | pid_t pid; | |
1007 | /* An empty waitpid() loop was put here by Tridge and we could never | |
d9c7edf6 | 1008 | * get him to explain why he put it in, so rather than taking it |
ee7118a8 DD |
1009 | * out we're instead saving the child exit statuses for later use. |
1010 | * The waitpid() loop presumably eliminates all possibility of leaving | |
1011 | * zombie children, maybe that's why he did it. | |
1012 | */ | |
1013 | while ((pid = waitpid(-1, &status, WNOHANG)) > 0) { | |
9af87151 WD |
1014 | /* save the child's exit status */ |
1015 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { | |
1016 | if (pid_stat_table[cnt].pid == 0) { | |
1017 | pid_stat_table[cnt].pid = pid; | |
1018 | pid_stat_table[cnt].status = status; | |
1019 | break; | |
1020 | } | |
1021 | } | |
ee7118a8 | 1022 | } |
029c1713 | 1023 | #endif |
19b27a48 AT |
1024 | } |
1025 | ||
c0531332 MP |
1026 | |
1027 | /** | |
1028 | * This routine catches signals and tries to send them to gdb. | |
1029 | * | |
1030 | * Because it's called from inside a signal handler it ought not to | |
1031 | * use too many library routines. | |
1032 | * | |
1033 | * @todo Perhaps use "screen -X" instead/as well, to help people | |
1034 | * debugging without easy access to X. Perhaps use an environment | |
1035 | * variable, or just call a script? | |
1036 | * | |
1037 | * @todo The /proc/ magic probably only works on Linux (and | |
1038 | * Solaris?) Can we be more portable? | |
1039 | **/ | |
1040 | #ifdef MAINTAINER_MODE | |
4fdc39dd MP |
1041 | const char *get_panic_action(void) |
1042 | { | |
1043 | const char *cmd_fmt = getenv("RSYNC_PANIC_ACTION"); | |
1044 | ||
1045 | if (cmd_fmt) | |
1046 | return cmd_fmt; | |
1047 | else | |
1048 | return "xterm -display :0 -T Panic -n Panic " | |
1049 | "-e gdb /proc/%d/exe %d"; | |
1050 | } | |
1051 | ||
1052 | ||
9fb3f7a9 MP |
1053 | /** |
1054 | * Handle a fatal signal by launching a debugger, controlled by $RSYNC_PANIC_ACTION. | |
1055 | * | |
1056 | * This signal handler is only installed if we were configured with | |
1057 | * --enable-maintainer-mode. Perhaps it should always be on and we | |
1058 | * should just look at the environment variable, but I'm a bit leery | |
1059 | * of a signal sending us into a busy loop. | |
1060 | **/ | |
067669da | 1061 | static RETSIGTYPE rsync_panic_handler(UNUSED(int whatsig)) |
c0531332 MP |
1062 | { |
1063 | char cmd_buf[300]; | |
1064 | int ret; | |
4fdc39dd MP |
1065 | |
1066 | sprintf(cmd_buf, get_panic_action(), | |
c0531332 MP |
1067 | getpid(), getpid()); |
1068 | ||
1069 | /* Unless we failed to execute gdb, we allow the process to | |
1070 | * continue. I'm not sure if that's right. */ | |
1071 | ret = system(cmd_buf); | |
1072 | if (ret) | |
1073 | _exit(ret); | |
1074 | } | |
1075 | #endif | |
1076 | ||
1077 | ||
5d6bcd44 | 1078 | int main(int argc,char *argv[]) |
d9c7edf6 | 1079 | { |
ff81e809 | 1080 | int ret; |
66a9dc96 WD |
1081 | int orig_argc = argc; |
1082 | char **orig_argv = argv; | |
5d6bcd44 | 1083 | |
7a6421fa | 1084 | signal(SIGUSR1, sigusr1_handler); |
8b35435f | 1085 | signal(SIGUSR2, sigusr2_handler); |
19b27a48 | 1086 | signal(SIGCHLD, sigchld_handler); |
c0531332 MP |
1087 | #ifdef MAINTAINER_MODE |
1088 | signal(SIGSEGV, rsync_panic_handler); | |
1089 | signal(SIGFPE, rsync_panic_handler); | |
1090 | signal(SIGABRT, rsync_panic_handler); | |
1091 | signal(SIGBUS, rsync_panic_handler); | |
1092 | #endif /* def MAINTAINER_MODE */ | |
5d6bcd44 | 1093 | |
7a6421fa | 1094 | starttime = time(NULL); |
6fe05820 | 1095 | am_root = (MY_UID() == 0); |
c627d613 | 1096 | |
a800434a AT |
1097 | memset(&stats, 0, sizeof(stats)); |
1098 | ||
df5e03da AT |
1099 | if (argc < 2) { |
1100 | usage(FERROR); | |
65417579 | 1101 | exit_cleanup(RERR_SYNTAX); |
df5e03da AT |
1102 | } |
1103 | ||
7a6421fa | 1104 | /* we set a 0 umask so that correct file permissions can be |
9af87151 | 1105 | * carried across */ |
7a6421fa | 1106 | orig_umask = (int)umask(0); |
5d6bcd44 | 1107 | |
50135767 | 1108 | if (!parse_arguments(&argc, (const char ***) &argv, 1)) { |
d9c7edf6 WD |
1109 | /* FIXME: We ought to call the same error-handling |
1110 | * code here, rather than relying on getopt. */ | |
50135767 | 1111 | option_error(); |
65417579 | 1112 | exit_cleanup(RERR_SYNTAX); |
b11ed3b1 | 1113 | } |
5d6bcd44 | 1114 | |
7a6421fa | 1115 | signal(SIGINT,SIGNAL_CAST sig_int); |
7a6421fa | 1116 | signal(SIGHUP,SIGNAL_CAST sig_int); |
8638dd48 | 1117 | signal(SIGTERM,SIGNAL_CAST sig_int); |
6b83141d | 1118 | |
34758d5c MP |
1119 | /* Ignore SIGPIPE; we consistently check error codes and will |
1120 | * see the EPIPE. */ | |
1121 | signal(SIGPIPE, SIG_IGN); | |
1122 | ||
c226b7c2 | 1123 | /* Initialize push_dir here because on some old systems getcwd |
9af87151 WD |
1124 | * (implemented by forking "pwd" and reading its output) doesn't |
1125 | * work when there are other child processes. Also, on all systems | |
1126 | * that implement getcwd that way "pwd" can't be found after chroot. */ | |
59187666 | 1127 | push_dir(NULL); |
c226b7c2 | 1128 | |
44e9e221 WD |
1129 | init_flist(); |
1130 | ||
b9f592fb WD |
1131 | if (write_batch || read_batch) { |
1132 | if (write_batch) | |
66a9dc96 | 1133 | write_batch_shell_file(orig_argc, orig_argv, argc); |
b9f592fb | 1134 | |
dbbab0c4 WD |
1135 | if (read_batch && strcmp(batch_name, "-") == 0) |
1136 | batch_fd = STDIN_FILENO; | |
1137 | else { | |
1138 | batch_fd = do_open(batch_name, | |
b9f592fb WD |
1139 | write_batch ? O_WRONLY | O_CREAT | O_TRUNC |
1140 | : O_RDONLY, S_IRUSR | S_IWUSR); | |
dbbab0c4 | 1141 | } |
b9f592fb WD |
1142 | if (batch_fd < 0) { |
1143 | rsyserr(FERROR, errno, "Batch file %s open error", | |
9b3318b0 | 1144 | batch_name); |
b9f592fb WD |
1145 | exit_cleanup(RERR_FILEIO); |
1146 | } | |
9459290a WD |
1147 | if (read_batch) |
1148 | read_stream_flags(batch_fd); | |
6902ed17 MP |
1149 | } |
1150 | ||
75aeac44 | 1151 | if (am_daemon && !am_server) |
7a6421fa | 1152 | return daemon_main(); |
f0fca04e | 1153 | |
08ac228f AT |
1154 | if (argc < 1) { |
1155 | usage(FERROR); | |
65417579 | 1156 | exit_cleanup(RERR_SYNTAX); |
08ac228f AT |
1157 | } |
1158 | ||
7a6421fa AT |
1159 | if (dry_run) |
1160 | verbose = MAX(verbose,1); | |
c627d613 | 1161 | |
7a6421fa | 1162 | if (am_server) { |
f0359dd0 AT |
1163 | set_nonblocking(STDIN_FILENO); |
1164 | set_nonblocking(STDOUT_FILENO); | |
75aeac44 WD |
1165 | if (am_daemon) |
1166 | return start_daemon(STDIN_FILENO, STDOUT_FILENO); | |
7a6421fa AT |
1167 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); |
1168 | } | |
c627d613 | 1169 | |
ff81e809 | 1170 | ret = start_client(argc, argv); |
d9c7edf6 | 1171 | if (ret == -1) |
9098bbf3 | 1172 | exit_cleanup(RERR_STARTCLIENT); |
088aac85 | 1173 | else |
9098bbf3 MP |
1174 | exit_cleanup(ret); |
1175 | ||
0f5a04e3 | 1176 | return ret; |
c627d613 | 1177 | } |