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; | |
62 | extern char *rsync_path; | |
63 | extern char *shell_cmd; | |
9b3318b0 | 64 | extern char *batch_name; |
c627d613 | 65 | |
b695f242 | 66 | |
ee7118a8 DD |
67 | /* there's probably never more than at most 2 outstanding child processes, |
68 | * but set it higher just in case. | |
69 | */ | |
70 | #define MAXCHILDPROCS 5 | |
71 | ||
72 | struct pid_status { | |
73 | pid_t pid; | |
74 | int status; | |
75 | } pid_stat_table[MAXCHILDPROCS]; | |
76 | ||
e5a2b854 | 77 | static void show_malloc_stats(void); |
82980a23 AT |
78 | |
79 | /**************************************************************************** | |
80 | wait for a process to exit, calling io_flush while waiting | |
81 | ****************************************************************************/ | |
82 | void wait_process(pid_t pid, int *status) | |
83 | { | |
ee7118a8 DD |
84 | pid_t waited_pid; |
85 | int cnt; | |
86 | ||
87 | while ((waited_pid = waitpid(pid, status, WNOHANG)) == 0) { | |
a24c6870 | 88 | msleep(20); |
f1e3656e | 89 | io_flush(FULL_FLUSH); |
82980a23 | 90 | } |
d9c7edf6 | 91 | |
6fb812f7 | 92 | if (waited_pid == -1 && errno == ECHILD) { |
ee7118a8 DD |
93 | /* status of requested child no longer available. |
94 | * check to see if it was processed by the sigchld_handler. | |
95 | */ | |
96 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { | |
97 | if (pid == pid_stat_table[cnt].pid) { | |
98 | *status = pid_stat_table[cnt].status; | |
99 | pid_stat_table[cnt].pid = 0; | |
100 | break; | |
101 | } | |
102 | } | |
103 | } | |
104 | ||
d9c7edf6 WD |
105 | /* TODO: If the child exited on a signal, then log an |
106 | * appropriate error message. Perhaps we should also accept a | |
107 | * message describing the purpose of the child. Also indicate | |
108 | * this to the caller so that thhey know something went | |
109 | * wrong. */ | |
82980a23 AT |
110 | *status = WEXITSTATUS(*status); |
111 | } | |
112 | ||
b9f592fb WD |
113 | /* This function gets called from all 3 processes. We want the client side |
114 | * to actually output the text, but the sender is the only process that has | |
115 | * all the stats we need. So, if we're a client sender, we do the report. | |
116 | * If we're a server sender, we write the stats on the supplied fd. If | |
117 | * we're the client receiver we read the stats from the supplied fd and do | |
118 | * the report. All processes might also generate a set of debug stats, if | |
119 | * the verbose level is high enough (this is the only thing that the | |
120 | * generator process and the server receiver ever do here). */ | |
c627d613 AT |
121 | static void report(int f) |
122 | { | |
b9f592fb WD |
123 | /* Cache two stats because the read/write code can change it. */ |
124 | int64 total_read = stats.total_read; | |
125 | int64 total_written = stats.total_written; | |
7a6421fa | 126 | time_t t = time(NULL); |
7a6421fa | 127 | |
7bb7058e | 128 | if (do_stats && verbose > 1) { |
5c15e29f | 129 | /* These come out from every process */ |
7bb7058e | 130 | show_malloc_stats(); |
86943126 | 131 | show_flist_stats(); |
5c15e29f MP |
132 | } |
133 | ||
e5fbaa71 S |
134 | if (am_generator) |
135 | return; | |
136 | ||
248fbb8c | 137 | if (am_daemon) { |
a9766ef1 | 138 | log_exit(0, __FILE__, __LINE__); |
83926d3c WD |
139 | if (f == -1 || !am_sender) |
140 | return; | |
248fbb8c AT |
141 | } |
142 | ||
e19452a9 | 143 | if (am_server) { |
3e491682 | 144 | if (am_sender) { |
b9f592fb WD |
145 | write_longint(f, total_read); |
146 | write_longint(f, total_written); | |
147 | write_longint(f, stats.total_size); | |
e19452a9 | 148 | } |
7a6421fa AT |
149 | return; |
150 | } | |
e19452a9 DD |
151 | |
152 | /* this is the client */ | |
d9c7edf6 | 153 | |
3e491682 | 154 | if (!am_sender) { |
58c5c245 WD |
155 | /* Read the first two in opposite order because the meaning of |
156 | * read/write swaps when switching from sender to receiver. */ | |
b9f592fb WD |
157 | total_written = read_longint(f); |
158 | total_read = read_longint(f); | |
a800434a | 159 | stats.total_size = read_longint(f); |
b9f592fb WD |
160 | } else if (write_batch) { |
161 | /* The --read-batch process is going to be a client | |
162 | * receiver, so we need to give it the stats. */ | |
163 | write_longint(batch_fd, total_read); | |
164 | write_longint(batch_fd, total_written); | |
165 | write_longint(batch_fd, stats.total_size); | |
a800434a AT |
166 | } |
167 | ||
168 | if (do_stats) { | |
1f658d42 | 169 | rprintf(FINFO,"\nNumber of files: %d\n", stats.num_files); |
d9c7edf6 WD |
170 | rprintf(FINFO,"Number of files transferred: %d\n", |
171 | stats.num_transferred_files); | |
172 | rprintf(FINFO,"Total file size: %.0f bytes\n", | |
173 | (double)stats.total_size); | |
174 | rprintf(FINFO,"Total transferred file size: %.0f bytes\n", | |
175 | (double)stats.total_transferred_size); | |
176 | rprintf(FINFO,"Literal data: %.0f bytes\n", | |
177 | (double)stats.literal_data); | |
178 | rprintf(FINFO,"Matched data: %.0f bytes\n", | |
179 | (double)stats.matched_data); | |
1f658d42 | 180 | rprintf(FINFO,"File list size: %d\n", stats.flist_size); |
4de2a174 | 181 | rprintf(FINFO,"Total bytes sent: %.0f\n", |
b9f592fb | 182 | (double)total_written); |
4de2a174 | 183 | rprintf(FINFO,"Total bytes received: %.0f\n", |
b9f592fb | 184 | (double)total_read); |
7a6421fa | 185 | } |
d9c7edf6 | 186 | |
e19452a9 | 187 | if (verbose || do_stats) { |
b9f592fb | 188 | rprintf(FINFO, |
4de2a174 | 189 | "\nsent %.0f bytes received %.0f bytes %.2f bytes/sec\n", |
b9f592fb WD |
190 | (double)total_written, (double)total_read, |
191 | (total_written + total_read)/(0.5 + (t - starttime))); | |
192 | rprintf(FINFO, "total size is %.0f speedup is %.2f\n", | |
d9c7edf6 | 193 | (double)stats.total_size, |
b9f592fb | 194 | (double)stats.total_size / (total_written+total_read)); |
e19452a9 | 195 | } |
fc8a6b97 AT |
196 | |
197 | fflush(stdout); | |
198 | fflush(stderr); | |
c627d613 AT |
199 | } |
200 | ||
201 | ||
e5a2b854 MP |
202 | /** |
203 | * If our C library can get malloc statistics, then show them to FINFO | |
204 | **/ | |
205 | static void show_malloc_stats(void) | |
206 | { | |
207 | #ifdef HAVE_MALLINFO | |
208 | struct mallinfo mi; | |
209 | ||
210 | mi = mallinfo(); | |
211 | ||
ce672562 | 212 | rprintf(FINFO, "\n" RSYNC_NAME "[%d] (%s%s%s) heap statistics:\n", |
5c15e29f MP |
213 | getpid(), |
214 | am_server ? "server " : "", | |
215 | am_daemon ? "daemon " : "", | |
b695f242 | 216 | who_am_i()); |
e5a2b854 MP |
217 | rprintf(FINFO, " arena: %10d (bytes from sbrk)\n", mi.arena); |
218 | rprintf(FINFO, " ordblks: %10d (chunks not in use)\n", mi.ordblks); | |
219 | rprintf(FINFO, " smblks: %10d\n", mi.smblks); | |
220 | rprintf(FINFO, " hblks: %10d (chunks from mmap)\n", mi.hblks); | |
221 | rprintf(FINFO, " hblkhd: %10d (bytes from mmap)\n", mi.hblkhd); | |
7b74bba1 S |
222 | rprintf(FINFO, " allmem: %10d (bytes from sbrk + mmap)\n", |
223 | mi.arena + mi.hblkhd); | |
e5a2b854 MP |
224 | rprintf(FINFO, " usmblks: %10d\n", mi.usmblks); |
225 | rprintf(FINFO, " fsmblks: %10d\n", mi.fsmblks); | |
226 | rprintf(FINFO, " uordblks: %10d (bytes used)\n", mi.uordblks); | |
227 | rprintf(FINFO, " fordblks: %10d (bytes free)\n", mi.fordblks); | |
228 | rprintf(FINFO, " keepcost: %10d (bytes in releasable chunk)\n", mi.keepcost); | |
229 | #endif /* HAVE_MALLINFO */ | |
230 | } | |
231 | ||
232 | ||
0882faa2 | 233 | /* Start the remote shell. cmd may be NULL to use the default. */ |
6c2e5b56 WD |
234 | static pid_t do_cmd(char *cmd, char *machine, char *user, char *path, |
235 | int *f_in, int *f_out) | |
c627d613 | 236 | { |
6c2e5b56 | 237 | int i, argc = 0; |
887e553f | 238 | char *args[MAX_ARGS]; |
19b27a48 | 239 | pid_t ret; |
6c2e5b56 | 240 | char *tok, *dir = NULL; |
bb4aa89c | 241 | int dash_l_set = 0; |
366345fe | 242 | |
088aac85 | 243 | if (!read_batch && !local_server) { |
9af87151 | 244 | char *rsh_env = getenv(RSYNC_RSH_ENV); |
366345fe | 245 | if (!cmd) |
9af87151 | 246 | cmd = rsh_env; |
366345fe AT |
247 | if (!cmd) |
248 | cmd = RSYNC_RSH; | |
249 | cmd = strdup(cmd); | |
d9c7edf6 | 250 | if (!cmd) |
366345fe AT |
251 | goto oom; |
252 | ||
887e553f | 253 | for (tok = strtok(cmd, " "); tok; tok = strtok(NULL, " ")) { |
e7a392c7 WD |
254 | /* Comparison leaves rooms for server_options(). */ |
255 | if (argc >= MAX_ARGS - 100) { | |
256 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
887e553f WD |
257 | exit_cleanup(RERR_SYNTAX); |
258 | } | |
366345fe | 259 | args[argc++] = tok; |
887e553f | 260 | } |
c627d613 | 261 | |
d9c7edf6 | 262 | /* check to see if we've already been given '-l user' in |
9af87151 | 263 | * the remote-shell command */ |
bb4aa89c WD |
264 | for (i = 0; i < argc-1; i++) { |
265 | if (!strcmp(args[i], "-l") && args[i+1][0] != '-') | |
266 | dash_l_set = 1; | |
267 | } | |
268 | ||
7b8356d0 | 269 | #if HAVE_REMSH |
366345fe AT |
270 | /* remsh (on HPUX) takes the arguments the other way around */ |
271 | args[argc++] = machine; | |
bb4aa89c | 272 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
273 | args[argc++] = "-l"; |
274 | args[argc++] = user; | |
275 | } | |
7b8356d0 | 276 | #else |
bb4aa89c | 277 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
278 | args[argc++] = "-l"; |
279 | args[argc++] = user; | |
280 | } | |
281 | args[argc++] = machine; | |
7b8356d0 | 282 | #endif |
c627d613 | 283 | |
366345fe | 284 | args[argc++] = rsync_path; |
c627d613 | 285 | |
9af87151 | 286 | if (blocking_io < 0) { |
90e22f4b WD |
287 | char *cp; |
288 | if ((cp = strrchr(cmd, '/')) != NULL) | |
289 | cp++; | |
290 | else | |
291 | cp = cmd; | |
292 | if (strcmp(cp, "rsh") == 0 || strcmp(cp, "remsh") == 0) | |
293 | blocking_io = 1; | |
66b71163 | 294 | } |
e384bfbd | 295 | |
93689aa5 | 296 | server_options(args,&argc); |
e7a392c7 WD |
297 | |
298 | if (argc >= MAX_ARGS - 2) { | |
299 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
300 | exit_cleanup(RERR_SYNTAX); | |
301 | } | |
366345fe | 302 | } |
c627d613 | 303 | |
366345fe | 304 | args[argc++] = "."; |
76076c4b | 305 | |
d9c7edf6 | 306 | if (!daemon_over_rsh && path && *path) |
366345fe | 307 | args[argc++] = path; |
c627d613 | 308 | |
366345fe | 309 | args[argc] = NULL; |
c627d613 | 310 | |
366345fe | 311 | if (verbose > 3) { |
9486289c | 312 | rprintf(FINFO,"cmd="); |
e7a392c7 | 313 | for (i = 0; i < argc; i++) |
9486289c AT |
314 | rprintf(FINFO,"%s ",args[i]); |
315 | rprintf(FINFO,"\n"); | |
366345fe AT |
316 | } |
317 | ||
c0d8e84c WD |
318 | if (read_batch) { |
319 | int from_gen_pipe[2]; | |
320 | if (fd_pair(from_gen_pipe) < 0) { | |
321 | rsyserr(FERROR, errno, "pipe"); | |
322 | exit_cleanup(RERR_IPC); | |
323 | } | |
324 | batch_gen_fd = from_gen_pipe[0]; | |
325 | *f_out = from_gen_pipe[1]; | |
326 | *f_in = batch_fd; | |
327 | ret = -1; /* no child pid */ | |
328 | } else if (local_server) { | |
b1df18d7 WD |
329 | /* If the user didn't request --[no-]whole-file, force |
330 | * it on, but only if we're not batch processing. */ | |
c0d8e84c | 331 | if (whole_file < 0 && !write_batch) |
b1df18d7 | 332 | whole_file = 1; |
25d34a5c | 333 | ret = local_child(argc, args, f_in, f_out, child_main); |
c0d8e84c | 334 | } else |
366345fe | 335 | ret = piped_child(args,f_in,f_out); |
c627d613 | 336 | |
3a69fad0 WD |
337 | if (dir) |
338 | free(dir); | |
82306bf6 | 339 | |
366345fe | 340 | return ret; |
c627d613 AT |
341 | |
342 | oom: | |
366345fe AT |
343 | out_of_memory("do_cmd"); |
344 | return 0; /* not reached */ | |
c627d613 AT |
345 | } |
346 | ||
347 | ||
c627d613 AT |
348 | static char *get_local_name(struct file_list *flist,char *name) |
349 | { | |
7a6421fa | 350 | STRUCT_STAT st; |
87cc45e1 | 351 | int e; |
c627d613 | 352 | |
c95da96a | 353 | if (verbose > 2) |
d9c7edf6 | 354 | rprintf(FINFO,"get_local_name count=%d %s\n", |
1f0610ef DD |
355 | flist->count, NS(name)); |
356 | ||
d9c7edf6 | 357 | if (!name) |
1f0610ef | 358 | return NULL; |
c95da96a | 359 | |
1ff5450d AT |
360 | if (do_stat(name,&st) == 0) { |
361 | if (S_ISDIR(st.st_mode)) { | |
59187666 | 362 | if (!push_dir(name)) { |
982e05bb WD |
363 | rsyserr(FERROR, errno, "push_dir#1 %s failed", |
364 | full_fname(name)); | |
65417579 | 365 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
366 | } |
367 | return NULL; | |
368 | } | |
369 | if (flist->count > 1) { | |
370 | rprintf(FERROR,"ERROR: destination must be a directory when copying more than 1 file\n"); | |
65417579 | 371 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
372 | } |
373 | return name; | |
374 | } | |
375 | ||
87cc45e1 | 376 | if (flist->count <= 1 && ((e = strlen(name)) <= 1 || name[e-1] != '/')) |
1ff5450d AT |
377 | return name; |
378 | ||
1ff5450d | 379 | if (do_mkdir(name,0777 & ~orig_umask) != 0) { |
982e05bb | 380 | rsyserr(FERROR, errno, "mkdir %s failed", full_fname(name)); |
65417579 | 381 | exit_cleanup(RERR_FILEIO); |
e5a96f0f WD |
382 | } |
383 | if (verbose > 0) | |
384 | rprintf(FINFO, "created directory %s\n", name); | |
385 | ||
386 | if (dry_run) { | |
387 | dry_run++; | |
388 | return NULL; | |
1ff5450d AT |
389 | } |
390 | ||
59187666 | 391 | if (!push_dir(name)) { |
982e05bb WD |
392 | rsyserr(FERROR, errno, "push_dir#2 %s failed", |
393 | full_fname(name)); | |
65417579 | 394 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
395 | } |
396 | ||
397 | return NULL; | |
c627d613 AT |
398 | } |
399 | ||
400 | ||
9486289c | 401 | static void do_server_sender(int f_in, int f_out, int argc,char *argv[]) |
c627d613 | 402 | { |
7a6421fa AT |
403 | int i; |
404 | struct file_list *flist; | |
405 | char *dir = argv[0]; | |
c627d613 | 406 | |
45e08edb WD |
407 | if (verbose > 2) { |
408 | rprintf(FINFO, "server_sender starting pid=%ld\n", | |
409 | (long)getpid()); | |
410 | } | |
d9c7edf6 | 411 | |
2adbcdc7 | 412 | if (am_daemon && lp_write_only(module_id)) { |
7a92ded3 WD |
413 | rprintf(FERROR, "ERROR: module is write only\n"); |
414 | exit_cleanup(RERR_SYNTAX); | |
415 | return; | |
416 | } | |
417 | ||
59187666 | 418 | if (!relative_paths && !push_dir(dir)) { |
982e05bb WD |
419 | rsyserr(FERROR, errno, "push_dir#3 %s failed", |
420 | full_fname(dir)); | |
65417579 | 421 | exit_cleanup(RERR_FILESELECT); |
7a6421fa AT |
422 | } |
423 | argc--; | |
424 | argv++; | |
d9c7edf6 | 425 | |
7a6421fa AT |
426 | if (strcmp(dir,".")) { |
427 | int l = strlen(dir); | |
d9c7edf6 | 428 | if (strcmp(dir,"/") == 0) |
7a6421fa | 429 | l = 0; |
e7a392c7 | 430 | for (i = 0; i < argc; i++) |
7a6421fa AT |
431 | argv[i] += l+1; |
432 | } | |
c627d613 | 433 | |
7a6421fa | 434 | if (argc == 0 && recurse) { |
e1f67417 | 435 | argc = 1; |
7a6421fa AT |
436 | argv--; |
437 | argv[0] = "."; | |
438 | } | |
d9c7edf6 | 439 | |
7a6421fa | 440 | flist = send_file_list(f_out,argc,argv); |
8d9dc9f9 AT |
441 | if (!flist || flist->count == 0) { |
442 | exit_cleanup(0); | |
443 | } | |
444 | ||
da3478b2 WD |
445 | io_start_buffering_in(); |
446 | io_start_buffering_out(); | |
447 | ||
7a6421fa | 448 | send_files(flist,f_out,f_in); |
f1e3656e | 449 | io_flush(FULL_FLUSH); |
7a6421fa | 450 | report(f_out); |
d04e9c51 | 451 | if (protocol_version >= 24) { |
d9c7edf6 | 452 | /* final goodbye message */ |
64c3523a WD |
453 | read_int(f_in); |
454 | } | |
f1e3656e | 455 | io_flush(FULL_FLUSH); |
7a6421fa | 456 | exit_cleanup(0); |
c627d613 AT |
457 | } |
458 | ||
459 | ||
dc5ddbcc AT |
460 | static int do_recv(int f_in,int f_out,struct file_list *flist,char *local_name) |
461 | { | |
d186eb1a | 462 | int pid; |
e1f67417 | 463 | int status = 0; |
554e0a8d | 464 | int error_pipe[2]; |
dc5ddbcc | 465 | |
bb6721dc WD |
466 | /* The receiving side mustn't obey this, or an existing symlink that |
467 | * points to an identical file won't be replaced by the referent. */ | |
468 | copy_links = 0; | |
469 | ||
d186eb1a AT |
470 | if (preserve_hard_links) |
471 | init_hard_links(flist); | |
dc5ddbcc | 472 | |
6957ae33 AT |
473 | if (!delete_after) { |
474 | /* I moved this here from recv_files() to prevent a race condition */ | |
58c5c245 | 475 | if (recurse && delete_mode && !local_name && flist->count > 0) |
6957ae33 | 476 | delete_files(flist); |
6957ae33 AT |
477 | } |
478 | ||
08f15335 | 479 | if (fd_pair(error_pipe) < 0) { |
ab759cd2 | 480 | rsyserr(FERROR, errno, "pipe failed in do_recv"); |
554e0a8d AT |
481 | exit_cleanup(RERR_SOCKETIO); |
482 | } | |
d9c7edf6 | 483 | |
f1e3656e | 484 | io_flush(NORMAL_FLUSH); |
c6e7fcb4 | 485 | |
e1f67417 | 486 | if ((pid = do_fork()) == 0) { |
554e0a8d | 487 | close(error_pipe[0]); |
3a69fad0 WD |
488 | if (f_in != f_out) |
489 | close(f_out); | |
e08c9610 | 490 | |
554e0a8d | 491 | /* we can't let two processes write to the socket at one time */ |
9eeb3b9c | 492 | close_multiplexing_out(); |
554e0a8d AT |
493 | |
494 | /* set place to send errors */ | |
f1e3656e | 495 | set_msg_fd_out(error_pipe[1]); |
554e0a8d | 496 | |
f1e3656e WD |
497 | recv_files(f_in,flist,local_name); |
498 | io_flush(FULL_FLUSH); | |
ba5e128d | 499 | report(f_in); |
e08c9610 | 500 | |
f1e3656e WD |
501 | send_msg(MSG_DONE, "", 0); |
502 | io_flush(FULL_FLUSH); | |
4a748188 | 503 | /* finally we go to sleep until our parent kills us |
9af87151 WD |
504 | * with a USR2 signal. We sleep for a short time as on |
505 | * some OSes a signal won't interrupt a sleep! */ | |
f1e3656e WD |
506 | while (1) |
507 | msleep(20); | |
d186eb1a | 508 | } |
dc5ddbcc | 509 | |
b695f242 | 510 | am_generator = 1; |
9eeb3b9c | 511 | close_multiplexing_in(); |
b9f592fb WD |
512 | if (write_batch) |
513 | stop_write_batch(); | |
b695f242 | 514 | |
554e0a8d | 515 | close(error_pipe[1]); |
3a69fad0 WD |
516 | if (f_in != f_out) |
517 | close(f_in); | |
e1b3d5c4 | 518 | |
da3478b2 | 519 | io_start_buffering_out(); |
b3e10ed7 | 520 | |
f1e3656e | 521 | set_msg_fd_in(error_pipe[0]); |
554e0a8d | 522 | |
f1e3656e | 523 | generate_files(f_out, flist, local_name); |
8d9dc9f9 | 524 | |
40da9042 | 525 | get_redo_num(); /* Read final MSG_DONE and any prior messages. */ |
e5fbaa71 | 526 | report(-1); |
f1e3656e | 527 | io_flush(FULL_FLUSH); |
d04e9c51 | 528 | if (protocol_version >= 24) { |
8ada7518 AT |
529 | /* send a final goodbye message */ |
530 | write_int(f_out, -1); | |
531 | } | |
f1e3656e | 532 | io_flush(FULL_FLUSH); |
8ada7518 | 533 | |
f1e3656e | 534 | set_msg_fd_in(-1); |
089a2435 | 535 | kill(pid, SIGUSR2); |
d79d1c69 | 536 | wait_process(pid, &status); |
d186eb1a | 537 | return status; |
dc5ddbcc AT |
538 | } |
539 | ||
c627d613 | 540 | |
9486289c | 541 | static void do_server_recv(int f_in, int f_out, int argc,char *argv[]) |
c627d613 | 542 | { |
7a6421fa AT |
543 | int status; |
544 | struct file_list *flist; | |
6c2e5b56 | 545 | char *local_name = NULL; |
7a6421fa | 546 | char *dir = NULL; |
f0fca04e | 547 | |
45e08edb WD |
548 | if (verbose > 2) { |
549 | rprintf(FINFO, "server_recv(%d) starting pid=%ld\n", | |
550 | argc, (long)getpid()); | |
551 | } | |
09b7f5db | 552 | |
2adbcdc7 | 553 | if (am_daemon && lp_read_only(module_id)) { |
09b7f5db AT |
554 | rprintf(FERROR,"ERROR: module is read only\n"); |
555 | exit_cleanup(RERR_SYNTAX); | |
556 | return; | |
557 | } | |
558 | ||
d9c7edf6 | 559 | |
7a6421fa AT |
560 | if (argc > 0) { |
561 | dir = argv[0]; | |
562 | argc--; | |
563 | argv++; | |
59187666 | 564 | if (!am_daemon && !push_dir(dir)) { |
982e05bb WD |
565 | rsyserr(FERROR, errno, "push_dir#4 %s failed", |
566 | full_fname(dir)); | |
65417579 | 567 | exit_cleanup(RERR_FILESELECT); |
d9c7edf6 | 568 | } |
7a6421fa | 569 | } |
c627d613 | 570 | |
da3478b2 | 571 | io_start_buffering_in(); |
b33b791e | 572 | if (delete_mode && !delete_excluded) |
7a6421fa | 573 | recv_exclude_list(f_in); |
c627d613 | 574 | |
7c2a9e76 WD |
575 | if (filesfrom_fd >= 0) { |
576 | /* We're receiving the file info from the sender, so we need | |
577 | * the IO routines to automatically write out the names onto | |
578 | * our f_out socket as we read the list info from the sender. | |
579 | * This avoids both deadlock and extra delays/buffers. */ | |
580 | io_set_filesfrom_fds(filesfrom_fd, f_out); | |
581 | filesfrom_fd = -1; | |
582 | } | |
583 | ||
b9f592fb | 584 | flist = recv_file_list(f_in); |
4c36a13e AT |
585 | if (!flist) { |
586 | rprintf(FERROR,"server_recv: recv_file_list error\n"); | |
65417579 | 587 | exit_cleanup(RERR_FILESELECT); |
7a6421fa | 588 | } |
d9c7edf6 WD |
589 | |
590 | if (argc > 0) { | |
7a6421fa AT |
591 | if (strcmp(dir,".")) { |
592 | argv[0] += strlen(dir); | |
3a69fad0 WD |
593 | if (argv[0][0] == '/') |
594 | argv[0]++; | |
7a6421fa AT |
595 | } |
596 | local_name = get_local_name(flist,argv[0]); | |
597 | } | |
c627d613 | 598 | |
7a6421fa AT |
599 | status = do_recv(f_in,f_out,flist,local_name); |
600 | exit_cleanup(status); | |
c627d613 AT |
601 | } |
602 | ||
603 | ||
734a94a2 | 604 | int child_main(int argc, char *argv[]) |
25d34a5c MP |
605 | { |
606 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); | |
734a94a2 | 607 | return 0; |
25d34a5c MP |
608 | } |
609 | ||
610 | ||
9486289c | 611 | void start_server(int f_in, int f_out, int argc, char *argv[]) |
366345fe | 612 | { |
f0359dd0 AT |
613 | set_nonblocking(f_in); |
614 | set_nonblocking(f_out); | |
615 | ||
da3478b2 WD |
616 | io_set_sock_fds(f_in, f_out); |
617 | setup_protocol(f_out, f_in); | |
618 | ||
d04e9c51 | 619 | if (protocol_version >= 23) |
da3478b2 | 620 | io_start_multiplex_out(); |
7a6421fa | 621 | |
7a6421fa | 622 | if (am_sender) { |
83926d3c | 623 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
9b3318b0 | 624 | |
b9f592fb WD |
625 | recv_exclude_list(f_in); |
626 | if (cvs_exclude) | |
627 | add_cvs_excludes(); | |
7a6421fa AT |
628 | do_server_sender(f_in, f_out, argc, argv); |
629 | } else { | |
630 | do_server_recv(f_in, f_out, argc, argv); | |
631 | } | |
632 | exit_cleanup(0); | |
366345fe AT |
633 | } |
634 | ||
0ba48136 MP |
635 | |
636 | /* | |
637 | * This is called once the connection has been negotiated. It is used | |
638 | * for rsyncd, remote-shell, and local connections. | |
639 | */ | |
19b27a48 | 640 | int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[]) |
9486289c | 641 | { |
088aac85 | 642 | struct file_list *flist = NULL; |
9486289c AT |
643 | int status = 0, status2 = 0; |
644 | char *local_name = NULL; | |
19b27a48 AT |
645 | |
646 | cleanup_child_pid = pid; | |
b9f592fb | 647 | if (read_batch) { |
b9f592fb WD |
648 | assert(am_sender == 0); |
649 | } else { | |
650 | set_nonblocking(f_in); | |
651 | set_nonblocking(f_out); | |
652 | } | |
f0359dd0 | 653 | |
da3478b2 | 654 | io_set_sock_fds(f_in, f_out); |
6d7b6081 AT |
655 | setup_protocol(f_out,f_in); |
656 | ||
b9f592fb | 657 | if (protocol_version >= 23 && !read_batch) |
da3478b2 | 658 | io_start_multiplex_in(); |
d9c7edf6 | 659 | |
18882701 WD |
660 | /* We set our stderr file handle to blocking because ssh might have |
661 | * set it to non-blocking. This can be particularly troublesome if | |
662 | * stderr is a clone of stdout, because ssh would have set our stdout | |
663 | * to non-blocking at the same time (which can easily cause us to lose | |
664 | * output from our print statements). This kluge shouldn't cause ssh | |
665 | * any problems for how we use it. Note also that we delayed setting | |
666 | * this until after the above protocol setup so that we know for sure | |
667 | * that ssh is done twiddling its file descriptors. */ | |
668 | set_blocking(STDERR_FILENO); | |
669 | ||
9486289c | 670 | if (am_sender) { |
83926d3c | 671 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
da3478b2 | 672 | io_start_buffering_out(); |
9486289c AT |
673 | if (cvs_exclude) |
674 | add_cvs_excludes(); | |
d9c7edf6 | 675 | if (delete_mode && !delete_excluded) |
9486289c | 676 | send_exclude_list(f_out); |
7c2a9e76 WD |
677 | if (remote_filesfrom_file) |
678 | filesfrom_fd = f_in; | |
b9f592fb WD |
679 | |
680 | if (write_batch) | |
681 | start_write_batch(f_out); | |
64c3523a | 682 | if (!read_batch) /* don't write to pipe */ |
d9c7edf6 WD |
683 | flist = send_file_list(f_out,argc,argv); |
684 | if (verbose > 3) | |
9486289c | 685 | rprintf(FINFO,"file list sent\n"); |
e1b3d5c4 | 686 | |
f1e3656e | 687 | io_flush(NORMAL_FLUSH); |
9486289c | 688 | send_files(flist,f_out,f_in); |
f1e3656e | 689 | io_flush(FULL_FLUSH); |
d04e9c51 | 690 | if (protocol_version >= 24) { |
d9c7edf6 | 691 | /* final goodbye message */ |
6c65e146 AT |
692 | read_int(f_in); |
693 | } | |
9486289c AT |
694 | if (pid != -1) { |
695 | if (verbose > 3) | |
08a740ff | 696 | rprintf(FINFO,"client_run waiting on %d\n", (int) pid); |
f1e3656e | 697 | io_flush(FULL_FLUSH); |
d79d1c69 | 698 | wait_process(pid, &status); |
9486289c | 699 | } |
3d382777 | 700 | report(-1); |
f1e3656e | 701 | io_flush(FULL_FLUSH); |
9486289c AT |
702 | exit_cleanup(status); |
703 | } | |
f7632fc6 | 704 | |
1082b52b | 705 | if (argc == 0) |
27e3e9c9 | 706 | list_only = 1; |
d9c7edf6 | 707 | |
1082b52b | 708 | if (!read_batch) |
d9c7edf6 WD |
709 | send_exclude_list(f_out); |
710 | ||
7c2a9e76 WD |
711 | if (filesfrom_fd >= 0) { |
712 | io_set_filesfrom_fds(filesfrom_fd, f_out); | |
713 | filesfrom_fd = -1; | |
714 | } | |
715 | ||
b9f592fb WD |
716 | if (write_batch) |
717 | start_write_batch(f_in); | |
9486289c AT |
718 | flist = recv_file_list(f_in); |
719 | if (!flist || flist->count == 0) { | |
796d484b | 720 | rprintf(FINFO, "client: nothing to do: " |
d9c7edf6 WD |
721 | "perhaps you need to specify some filenames or " |
722 | "the --recursive option?\n"); | |
9486289c AT |
723 | exit_cleanup(0); |
724 | } | |
d9c7edf6 | 725 | |
9486289c | 726 | local_name = get_local_name(flist,argv[0]); |
d9c7edf6 | 727 | |
9486289c | 728 | status2 = do_recv(f_in,f_out,flist,local_name); |
d9c7edf6 | 729 | |
9486289c | 730 | if (pid != -1) { |
8d9dc9f9 | 731 | if (verbose > 3) |
08a740ff | 732 | rprintf(FINFO,"client_run2 waiting on %d\n", (int) pid); |
f1e3656e | 733 | io_flush(FULL_FLUSH); |
d79d1c69 | 734 | wait_process(pid, &status); |
9486289c | 735 | } |
d9c7edf6 | 736 | |
ff81e809 | 737 | return MAX(status, status2); |
9486289c AT |
738 | } |
739 | ||
7169bb4a MP |
740 | static int copy_argv (char *argv[]) |
741 | { | |
742 | int i; | |
743 | ||
744 | for (i = 0; argv[i]; i++) { | |
745 | if (!(argv[i] = strdup(argv[i]))) { | |
746 | rprintf (FERROR, "out of memory at %s(%d)\n", | |
747 | __FILE__, __LINE__); | |
748 | return RERR_MALLOC; | |
749 | } | |
750 | } | |
751 | ||
752 | return 0; | |
753 | } | |
754 | ||
755 | ||
c1a04ecb | 756 | /** |
0ba48136 MP |
757 | * Start a client for either type of remote connection. Work out |
758 | * whether the arguments request a remote shell or rsyncd connection, | |
759 | * and call the appropriate connection function, then run_client. | |
0b4af330 MP |
760 | * |
761 | * Calls either start_socket_client (for sockets) or do_cmd and | |
762 | * client_run (for ssh). | |
c1a04ecb | 763 | **/ |
fc8a6b97 | 764 | static int start_client(int argc, char *argv[]) |
5d6bcd44 AT |
765 | { |
766 | char *p; | |
767 | char *shell_machine = NULL; | |
768 | char *shell_path = NULL; | |
769 | char *shell_user = NULL; | |
19b27a48 AT |
770 | int ret; |
771 | pid_t pid; | |
5d6bcd44 | 772 | int f_in,f_out; |
7169bb4a MP |
773 | int rc; |
774 | ||
775 | /* Don't clobber argv[] so that ps(1) can still show the right | |
d9c7edf6 | 776 | * command line. */ |
75aeac44 | 777 | if ((rc = copy_argv(argv))) |
7169bb4a | 778 | return rc; |
5d6bcd44 | 779 | |
75aeac44 | 780 | /* rsync:// always uses rsync server over direct socket connection */ |
b9f592fb WD |
781 | if (strncasecmp(URL_PREFIX, argv[0], strlen(URL_PREFIX)) == 0 |
782 | && !read_batch) { | |
f7632fc6 AT |
783 | char *host, *path; |
784 | ||
7169bb4a | 785 | host = argv[0] + strlen(URL_PREFIX); |
f7632fc6 AT |
786 | p = strchr(host,'/'); |
787 | if (p) { | |
50b31539 | 788 | *p = '\0'; |
f7632fc6 | 789 | path = p+1; |
50b31539 | 790 | } else |
a125c82a | 791 | path = ""; |
50b31539 WD |
792 | if (*host == '[' && (p = strchr(host, ']')) != NULL) { |
793 | host++; | |
794 | *p++ = '\0'; | |
795 | if (*p != ':') | |
796 | p = NULL; | |
797 | } else | |
798 | p = strchr(host, ':'); | |
2acf81eb DD |
799 | if (p) { |
800 | rsync_port = atoi(p+1); | |
50b31539 | 801 | *p = '\0'; |
2acf81eb | 802 | } |
f7632fc6 AT |
803 | return start_socket_client(host, path, argc-1, argv+1); |
804 | } | |
805 | ||
d16c245f | 806 | if (!read_batch) { /* for read_batch, NO source is specified */ |
a125c82a | 807 | p = find_colon(argv[0]); |
d16c245f | 808 | if (p) { /* source is remote */ |
7c2a9e76 WD |
809 | if (remote_filesfrom_file |
810 | && remote_filesfrom_file != files_from + 1 | |
811 | && strncmp(files_from, argv[0], p-argv[0]+1) != 0) { | |
812 | rprintf(FERROR, | |
50b31539 | 813 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
814 | exit_cleanup(RERR_SYNTAX); |
815 | } | |
d9c7edf6 WD |
816 | if (p[1] == ':') { /* double colon */ |
817 | *p = 0; | |
818 | if (!shell_cmd) { | |
819 | return start_socket_client(argv[0], p+2, | |
820 | argc-1, argv+1); | |
821 | } | |
822 | p++; | |
823 | daemon_over_rsh = 1; | |
75aeac44 | 824 | } |
3591c066 | 825 | |
d16c245f | 826 | if (argc < 1) { /* destination required */ |
d9c7edf6 WD |
827 | usage(FERROR); |
828 | exit_cleanup(RERR_SYNTAX); | |
829 | } | |
a125c82a | 830 | |
d9c7edf6 WD |
831 | am_sender = 0; |
832 | *p = 0; | |
833 | shell_machine = argv[0]; | |
834 | shell_path = p+1; | |
d9c7edf6 | 835 | argv++; |
d16c245f | 836 | } else { /* source is local */ |
d9c7edf6 WD |
837 | am_sender = 1; |
838 | ||
839 | /* rsync:// destination uses rsync server over direct socket */ | |
840 | if (strncasecmp(URL_PREFIX, argv[argc-1], strlen(URL_PREFIX)) == 0) { | |
841 | char *host, *path; | |
842 | ||
843 | host = argv[argc-1] + strlen(URL_PREFIX); | |
844 | p = strchr(host,'/'); | |
845 | if (p) { | |
50b31539 | 846 | *p = '\0'; |
d9c7edf6 | 847 | path = p+1; |
50b31539 | 848 | } else |
d9c7edf6 | 849 | path = ""; |
50b31539 WD |
850 | if (*host == '[' && (p = strchr(host, ']')) != NULL) { |
851 | host++; | |
852 | *p++ = '\0'; | |
853 | if (*p != ':') | |
854 | p = NULL; | |
855 | } else | |
856 | p = strchr(host, ':'); | |
d9c7edf6 WD |
857 | if (p) { |
858 | rsync_port = atoi(p+1); | |
50b31539 | 859 | *p = '\0'; |
d9c7edf6 WD |
860 | } |
861 | return start_socket_client(host, path, argc-1, argv); | |
a125c82a | 862 | } |
d9c7edf6 | 863 | |
d16c245f | 864 | p = find_colon(argv[argc-1]); /* look in dest arg */ |
7c2a9e76 WD |
865 | if (p && remote_filesfrom_file |
866 | && remote_filesfrom_file != files_from + 1 | |
867 | && strncmp(files_from, argv[argc-1], p-argv[argc-1]+1) != 0) { | |
868 | rprintf(FERROR, | |
50b31539 | 869 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
870 | exit_cleanup(RERR_SYNTAX); |
871 | } | |
d16c245f | 872 | if (!p) { /* no colon found, so src & dest are local */ |
d9c7edf6 | 873 | local_server = 1; |
7c2a9e76 WD |
874 | if (remote_filesfrom_file) { |
875 | rprintf(FERROR, | |
50b31539 | 876 | "--files-from cannot be remote when the transfer is local\n"); |
7c2a9e76 WD |
877 | exit_cleanup(RERR_SYNTAX); |
878 | } | |
d9c7edf6 | 879 | } else if (p[1] == ':') { /* double colon */ |
a125c82a | 880 | *p = 0; |
d9c7edf6 WD |
881 | if (!shell_cmd) { |
882 | return start_socket_client(argv[argc-1], p+2, | |
883 | argc-1, argv); | |
884 | } | |
885 | p++; | |
886 | daemon_over_rsh = 1; | |
a125c82a | 887 | } |
a125c82a | 888 | |
d9c7edf6 WD |
889 | if (argc < 2) { |
890 | usage(FERROR); | |
891 | exit_cleanup(RERR_SYNTAX); | |
75aeac44 | 892 | } |
3591c066 | 893 | |
d9c7edf6 WD |
894 | if (local_server) { |
895 | shell_machine = NULL; | |
896 | shell_path = argv[argc-1]; | |
897 | } else { | |
898 | *p = 0; | |
899 | shell_machine = argv[argc-1]; | |
900 | shell_path = p+1; | |
901 | } | |
5d6bcd44 | 902 | } |
d16c245f WD |
903 | argc--; |
904 | } else { /* read_batch */ | |
d9c7edf6 WD |
905 | local_server = 1; |
906 | shell_path = argv[argc-1]; | |
b9f592fb WD |
907 | if (find_colon(shell_path)) { |
908 | rprintf(FERROR, "remote destination is not allowed with --read-batch\n"); | |
909 | exit_cleanup(RERR_SYNTAX); | |
910 | } | |
6902ed17 MP |
911 | } |
912 | ||
5d6bcd44 | 913 | if (shell_machine) { |
6fc048f4 | 914 | p = strrchr(shell_machine,'@'); |
5d6bcd44 AT |
915 | if (p) { |
916 | *p = 0; | |
917 | shell_user = shell_machine; | |
918 | shell_machine = p+1; | |
919 | } | |
920 | } | |
921 | ||
922 | if (verbose > 3) { | |
9486289c | 923 | rprintf(FINFO,"cmd=%s machine=%s user=%s path=%s\n", |
5d6bcd44 AT |
924 | shell_cmd?shell_cmd:"", |
925 | shell_machine?shell_machine:"", | |
926 | shell_user?shell_user:"", | |
927 | shell_path?shell_path:""); | |
928 | } | |
d9c7edf6 | 929 | |
d16c245f | 930 | /* for remote source, only single dest arg can remain ... */ |
f7632fc6 | 931 | if (!am_sender && argc > 1) { |
5d6bcd44 | 932 | usage(FERROR); |
65417579 | 933 | exit_cleanup(RERR_SYNTAX); |
5d6bcd44 | 934 | } |
27e3e9c9 | 935 | |
d16c245f WD |
936 | /* ... or no dest at all */ |
937 | if (!am_sender && argc == 0) { | |
27e3e9c9 AT |
938 | list_only = 1; |
939 | } | |
d9c7edf6 | 940 | |
75aeac44 WD |
941 | pid = do_cmd(shell_cmd,shell_machine,shell_user,shell_path, |
942 | &f_in,&f_out); | |
943 | ||
944 | /* if we're running an rsync server on the remote host over a | |
9af87151 | 945 | * remote shell command, we need to do the RSYNCD protocol first */ |
75aeac44 WD |
946 | if (daemon_over_rsh) { |
947 | int tmpret; | |
948 | tmpret = start_inband_exchange(shell_user, shell_path, | |
949 | f_in, f_out, argc); | |
950 | if (tmpret < 0) | |
951 | return tmpret; | |
952 | } | |
953 | ||
fc8a6b97 AT |
954 | ret = client_run(f_in, f_out, pid, argc, argv); |
955 | ||
956 | fflush(stdout); | |
957 | fflush(stderr); | |
958 | ||
959 | return ret; | |
5d6bcd44 AT |
960 | } |
961 | ||
366345fe | 962 | |
067669da WD |
963 | static RETSIGTYPE sigusr1_handler(UNUSED(int val)) |
964 | { | |
65417579 | 965 | exit_cleanup(RERR_SIGNAL); |
82306bf6 AT |
966 | } |
967 | ||
067669da WD |
968 | static RETSIGTYPE sigusr2_handler(UNUSED(int val)) |
969 | { | |
19b27a48 | 970 | if (log_got_error) _exit(RERR_PARTIAL); |
8b35435f AT |
971 | _exit(0); |
972 | } | |
973 | ||
067669da WD |
974 | static RETSIGTYPE sigchld_handler(UNUSED(int val)) |
975 | { | |
029c1713 | 976 | #ifdef WNOHANG |
ee7118a8 DD |
977 | int cnt, status; |
978 | pid_t pid; | |
979 | /* An empty waitpid() loop was put here by Tridge and we could never | |
d9c7edf6 | 980 | * get him to explain why he put it in, so rather than taking it |
ee7118a8 DD |
981 | * out we're instead saving the child exit statuses for later use. |
982 | * The waitpid() loop presumably eliminates all possibility of leaving | |
983 | * zombie children, maybe that's why he did it. | |
984 | */ | |
985 | while ((pid = waitpid(-1, &status, WNOHANG)) > 0) { | |
9af87151 WD |
986 | /* save the child's exit status */ |
987 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { | |
988 | if (pid_stat_table[cnt].pid == 0) { | |
989 | pid_stat_table[cnt].pid = pid; | |
990 | pid_stat_table[cnt].status = status; | |
991 | break; | |
992 | } | |
993 | } | |
ee7118a8 | 994 | } |
029c1713 | 995 | #endif |
19b27a48 AT |
996 | } |
997 | ||
c0531332 MP |
998 | |
999 | /** | |
1000 | * This routine catches signals and tries to send them to gdb. | |
1001 | * | |
1002 | * Because it's called from inside a signal handler it ought not to | |
1003 | * use too many library routines. | |
1004 | * | |
1005 | * @todo Perhaps use "screen -X" instead/as well, to help people | |
1006 | * debugging without easy access to X. Perhaps use an environment | |
1007 | * variable, or just call a script? | |
1008 | * | |
1009 | * @todo The /proc/ magic probably only works on Linux (and | |
1010 | * Solaris?) Can we be more portable? | |
1011 | **/ | |
1012 | #ifdef MAINTAINER_MODE | |
4fdc39dd MP |
1013 | const char *get_panic_action(void) |
1014 | { | |
1015 | const char *cmd_fmt = getenv("RSYNC_PANIC_ACTION"); | |
1016 | ||
1017 | if (cmd_fmt) | |
1018 | return cmd_fmt; | |
1019 | else | |
1020 | return "xterm -display :0 -T Panic -n Panic " | |
1021 | "-e gdb /proc/%d/exe %d"; | |
1022 | } | |
1023 | ||
1024 | ||
9fb3f7a9 MP |
1025 | /** |
1026 | * Handle a fatal signal by launching a debugger, controlled by $RSYNC_PANIC_ACTION. | |
1027 | * | |
1028 | * This signal handler is only installed if we were configured with | |
1029 | * --enable-maintainer-mode. Perhaps it should always be on and we | |
1030 | * should just look at the environment variable, but I'm a bit leery | |
1031 | * of a signal sending us into a busy loop. | |
1032 | **/ | |
067669da | 1033 | static RETSIGTYPE rsync_panic_handler(UNUSED(int whatsig)) |
c0531332 MP |
1034 | { |
1035 | char cmd_buf[300]; | |
1036 | int ret; | |
4fdc39dd MP |
1037 | |
1038 | sprintf(cmd_buf, get_panic_action(), | |
c0531332 MP |
1039 | getpid(), getpid()); |
1040 | ||
1041 | /* Unless we failed to execute gdb, we allow the process to | |
1042 | * continue. I'm not sure if that's right. */ | |
1043 | ret = system(cmd_buf); | |
1044 | if (ret) | |
1045 | _exit(ret); | |
1046 | } | |
1047 | #endif | |
1048 | ||
1049 | ||
5d6bcd44 | 1050 | int main(int argc,char *argv[]) |
d9c7edf6 | 1051 | { |
ff81e809 | 1052 | int ret; |
66a9dc96 WD |
1053 | int orig_argc = argc; |
1054 | char **orig_argv = argv; | |
5d6bcd44 | 1055 | |
7a6421fa | 1056 | signal(SIGUSR1, sigusr1_handler); |
8b35435f | 1057 | signal(SIGUSR2, sigusr2_handler); |
19b27a48 | 1058 | signal(SIGCHLD, sigchld_handler); |
c0531332 MP |
1059 | #ifdef MAINTAINER_MODE |
1060 | signal(SIGSEGV, rsync_panic_handler); | |
1061 | signal(SIGFPE, rsync_panic_handler); | |
1062 | signal(SIGABRT, rsync_panic_handler); | |
1063 | signal(SIGBUS, rsync_panic_handler); | |
1064 | #endif /* def MAINTAINER_MODE */ | |
5d6bcd44 | 1065 | |
7a6421fa | 1066 | starttime = time(NULL); |
6fe05820 | 1067 | am_root = (MY_UID() == 0); |
c627d613 | 1068 | |
a800434a AT |
1069 | memset(&stats, 0, sizeof(stats)); |
1070 | ||
df5e03da AT |
1071 | if (argc < 2) { |
1072 | usage(FERROR); | |
65417579 | 1073 | exit_cleanup(RERR_SYNTAX); |
df5e03da AT |
1074 | } |
1075 | ||
7a6421fa | 1076 | /* we set a 0 umask so that correct file permissions can be |
9af87151 | 1077 | * carried across */ |
7a6421fa | 1078 | orig_umask = (int)umask(0); |
5d6bcd44 | 1079 | |
50135767 | 1080 | if (!parse_arguments(&argc, (const char ***) &argv, 1)) { |
d9c7edf6 WD |
1081 | /* FIXME: We ought to call the same error-handling |
1082 | * code here, rather than relying on getopt. */ | |
50135767 | 1083 | option_error(); |
65417579 | 1084 | exit_cleanup(RERR_SYNTAX); |
b11ed3b1 | 1085 | } |
5d6bcd44 | 1086 | |
7a6421fa | 1087 | signal(SIGINT,SIGNAL_CAST sig_int); |
7a6421fa | 1088 | signal(SIGHUP,SIGNAL_CAST sig_int); |
8638dd48 | 1089 | signal(SIGTERM,SIGNAL_CAST sig_int); |
6b83141d | 1090 | |
34758d5c MP |
1091 | /* Ignore SIGPIPE; we consistently check error codes and will |
1092 | * see the EPIPE. */ | |
1093 | signal(SIGPIPE, SIG_IGN); | |
1094 | ||
c226b7c2 | 1095 | /* Initialize push_dir here because on some old systems getcwd |
9af87151 WD |
1096 | * (implemented by forking "pwd" and reading its output) doesn't |
1097 | * work when there are other child processes. Also, on all systems | |
1098 | * that implement getcwd that way "pwd" can't be found after chroot. */ | |
59187666 | 1099 | push_dir(NULL); |
c226b7c2 | 1100 | |
44e9e221 WD |
1101 | init_flist(); |
1102 | ||
b9f592fb WD |
1103 | if (write_batch || read_batch) { |
1104 | if (write_batch) | |
66a9dc96 | 1105 | write_batch_shell_file(orig_argc, orig_argv, argc); |
b9f592fb | 1106 | |
dbbab0c4 WD |
1107 | if (read_batch && strcmp(batch_name, "-") == 0) |
1108 | batch_fd = STDIN_FILENO; | |
1109 | else { | |
1110 | batch_fd = do_open(batch_name, | |
b9f592fb WD |
1111 | write_batch ? O_WRONLY | O_CREAT | O_TRUNC |
1112 | : O_RDONLY, S_IRUSR | S_IWUSR); | |
dbbab0c4 | 1113 | } |
b9f592fb WD |
1114 | if (batch_fd < 0) { |
1115 | rsyserr(FERROR, errno, "Batch file %s open error", | |
9b3318b0 | 1116 | batch_name); |
b9f592fb WD |
1117 | exit_cleanup(RERR_FILEIO); |
1118 | } | |
9459290a WD |
1119 | if (read_batch) |
1120 | read_stream_flags(batch_fd); | |
6902ed17 MP |
1121 | } |
1122 | ||
75aeac44 | 1123 | if (am_daemon && !am_server) |
7a6421fa | 1124 | return daemon_main(); |
f0fca04e | 1125 | |
08ac228f AT |
1126 | if (argc < 1) { |
1127 | usage(FERROR); | |
65417579 | 1128 | exit_cleanup(RERR_SYNTAX); |
08ac228f AT |
1129 | } |
1130 | ||
7a6421fa AT |
1131 | if (dry_run) |
1132 | verbose = MAX(verbose,1); | |
c627d613 | 1133 | |
7a6421fa | 1134 | if (am_server) { |
f0359dd0 AT |
1135 | set_nonblocking(STDIN_FILENO); |
1136 | set_nonblocking(STDOUT_FILENO); | |
75aeac44 WD |
1137 | if (am_daemon) |
1138 | return start_daemon(STDIN_FILENO, STDOUT_FILENO); | |
7a6421fa AT |
1139 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); |
1140 | } | |
c627d613 | 1141 | |
ff81e809 | 1142 | ret = start_client(argc, argv); |
d9c7edf6 | 1143 | if (ret == -1) |
9098bbf3 | 1144 | exit_cleanup(RERR_STARTCLIENT); |
088aac85 | 1145 | else |
9098bbf3 MP |
1146 | exit_cleanup(ret); |
1147 | ||
0f5a04e3 | 1148 | return ret; |
c627d613 | 1149 | } |