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; | |
c3fad2e2 | 62 | extern char *basis_dir[]; |
32eda096 WD |
63 | extern char *rsync_path; |
64 | extern char *shell_cmd; | |
9b3318b0 | 65 | extern char *batch_name; |
c627d613 | 66 | |
b695f242 | 67 | |
ee7118a8 DD |
68 | /* there's probably never more than at most 2 outstanding child processes, |
69 | * but set it higher just in case. | |
70 | */ | |
71 | #define MAXCHILDPROCS 5 | |
72 | ||
73 | struct pid_status { | |
74 | pid_t pid; | |
75 | int status; | |
76 | } pid_stat_table[MAXCHILDPROCS]; | |
77 | ||
e5a2b854 | 78 | static void show_malloc_stats(void); |
82980a23 AT |
79 | |
80 | /**************************************************************************** | |
81 | wait for a process to exit, calling io_flush while waiting | |
82 | ****************************************************************************/ | |
83 | void wait_process(pid_t pid, int *status) | |
84 | { | |
ee7118a8 DD |
85 | pid_t waited_pid; |
86 | int cnt; | |
87 | ||
88 | while ((waited_pid = waitpid(pid, status, WNOHANG)) == 0) { | |
a24c6870 | 89 | msleep(20); |
f1e3656e | 90 | io_flush(FULL_FLUSH); |
82980a23 | 91 | } |
d9c7edf6 | 92 | |
6fb812f7 | 93 | if (waited_pid == -1 && errno == ECHILD) { |
ee7118a8 DD |
94 | /* status of requested child no longer available. |
95 | * check to see if it was processed by the sigchld_handler. | |
96 | */ | |
97 | for (cnt = 0; cnt < MAXCHILDPROCS; cnt++) { | |
98 | if (pid == pid_stat_table[cnt].pid) { | |
99 | *status = pid_stat_table[cnt].status; | |
100 | pid_stat_table[cnt].pid = 0; | |
101 | break; | |
102 | } | |
103 | } | |
104 | } | |
105 | ||
d9c7edf6 WD |
106 | /* TODO: If the child exited on a signal, then log an |
107 | * appropriate error message. Perhaps we should also accept a | |
108 | * message describing the purpose of the child. Also indicate | |
109 | * this to the caller so that thhey know something went | |
110 | * wrong. */ | |
82980a23 AT |
111 | *status = WEXITSTATUS(*status); |
112 | } | |
113 | ||
b9f592fb WD |
114 | /* This function gets called from all 3 processes. We want the client side |
115 | * to actually output the text, but the sender is the only process that has | |
116 | * all the stats we need. So, if we're a client sender, we do the report. | |
117 | * If we're a server sender, we write the stats on the supplied fd. If | |
118 | * we're the client receiver we read the stats from the supplied fd and do | |
119 | * the report. All processes might also generate a set of debug stats, if | |
120 | * the verbose level is high enough (this is the only thing that the | |
121 | * generator process and the server receiver ever do here). */ | |
c627d613 AT |
122 | static void report(int f) |
123 | { | |
b9f592fb WD |
124 | /* Cache two stats because the read/write code can change it. */ |
125 | int64 total_read = stats.total_read; | |
126 | int64 total_written = stats.total_written; | |
7a6421fa | 127 | time_t t = time(NULL); |
7a6421fa | 128 | |
7bb7058e | 129 | if (do_stats && verbose > 1) { |
5c15e29f | 130 | /* These come out from every process */ |
7bb7058e | 131 | show_malloc_stats(); |
86943126 | 132 | show_flist_stats(); |
5c15e29f MP |
133 | } |
134 | ||
e5fbaa71 S |
135 | if (am_generator) |
136 | return; | |
137 | ||
248fbb8c | 138 | if (am_daemon) { |
a9766ef1 | 139 | log_exit(0, __FILE__, __LINE__); |
83926d3c WD |
140 | if (f == -1 || !am_sender) |
141 | return; | |
248fbb8c AT |
142 | } |
143 | ||
e19452a9 | 144 | if (am_server) { |
3e491682 | 145 | if (am_sender) { |
b9f592fb WD |
146 | write_longint(f, total_read); |
147 | write_longint(f, total_written); | |
148 | write_longint(f, stats.total_size); | |
e19452a9 | 149 | } |
7a6421fa AT |
150 | return; |
151 | } | |
e19452a9 DD |
152 | |
153 | /* this is the client */ | |
d9c7edf6 | 154 | |
3e491682 | 155 | if (!am_sender) { |
58c5c245 WD |
156 | /* Read the first two in opposite order because the meaning of |
157 | * read/write swaps when switching from sender to receiver. */ | |
b9f592fb WD |
158 | total_written = read_longint(f); |
159 | total_read = read_longint(f); | |
a800434a | 160 | stats.total_size = read_longint(f); |
b9f592fb WD |
161 | } else if (write_batch) { |
162 | /* The --read-batch process is going to be a client | |
163 | * receiver, so we need to give it the stats. */ | |
164 | write_longint(batch_fd, total_read); | |
165 | write_longint(batch_fd, total_written); | |
166 | write_longint(batch_fd, stats.total_size); | |
a800434a AT |
167 | } |
168 | ||
169 | if (do_stats) { | |
1f658d42 | 170 | rprintf(FINFO,"\nNumber of files: %d\n", stats.num_files); |
d9c7edf6 WD |
171 | rprintf(FINFO,"Number of files transferred: %d\n", |
172 | stats.num_transferred_files); | |
173 | rprintf(FINFO,"Total file size: %.0f bytes\n", | |
174 | (double)stats.total_size); | |
175 | rprintf(FINFO,"Total transferred file size: %.0f bytes\n", | |
176 | (double)stats.total_transferred_size); | |
177 | rprintf(FINFO,"Literal data: %.0f bytes\n", | |
178 | (double)stats.literal_data); | |
179 | rprintf(FINFO,"Matched data: %.0f bytes\n", | |
180 | (double)stats.matched_data); | |
1f658d42 | 181 | rprintf(FINFO,"File list size: %d\n", stats.flist_size); |
4de2a174 | 182 | rprintf(FINFO,"Total bytes sent: %.0f\n", |
b9f592fb | 183 | (double)total_written); |
4de2a174 | 184 | rprintf(FINFO,"Total bytes received: %.0f\n", |
b9f592fb | 185 | (double)total_read); |
7a6421fa | 186 | } |
d9c7edf6 | 187 | |
e19452a9 | 188 | if (verbose || do_stats) { |
b9f592fb | 189 | rprintf(FINFO, |
4de2a174 | 190 | "\nsent %.0f bytes received %.0f bytes %.2f bytes/sec\n", |
b9f592fb WD |
191 | (double)total_written, (double)total_read, |
192 | (total_written + total_read)/(0.5 + (t - starttime))); | |
193 | rprintf(FINFO, "total size is %.0f speedup is %.2f\n", | |
d9c7edf6 | 194 | (double)stats.total_size, |
b9f592fb | 195 | (double)stats.total_size / (total_written+total_read)); |
e19452a9 | 196 | } |
fc8a6b97 AT |
197 | |
198 | fflush(stdout); | |
199 | fflush(stderr); | |
c627d613 AT |
200 | } |
201 | ||
202 | ||
e5a2b854 MP |
203 | /** |
204 | * If our C library can get malloc statistics, then show them to FINFO | |
205 | **/ | |
206 | static void show_malloc_stats(void) | |
207 | { | |
208 | #ifdef HAVE_MALLINFO | |
209 | struct mallinfo mi; | |
210 | ||
211 | mi = mallinfo(); | |
212 | ||
ce672562 | 213 | rprintf(FINFO, "\n" RSYNC_NAME "[%d] (%s%s%s) heap statistics:\n", |
5c15e29f MP |
214 | getpid(), |
215 | am_server ? "server " : "", | |
216 | am_daemon ? "daemon " : "", | |
b695f242 | 217 | who_am_i()); |
e5a2b854 MP |
218 | rprintf(FINFO, " arena: %10d (bytes from sbrk)\n", mi.arena); |
219 | rprintf(FINFO, " ordblks: %10d (chunks not in use)\n", mi.ordblks); | |
220 | rprintf(FINFO, " smblks: %10d\n", mi.smblks); | |
221 | rprintf(FINFO, " hblks: %10d (chunks from mmap)\n", mi.hblks); | |
222 | rprintf(FINFO, " hblkhd: %10d (bytes from mmap)\n", mi.hblkhd); | |
7b74bba1 S |
223 | rprintf(FINFO, " allmem: %10d (bytes from sbrk + mmap)\n", |
224 | mi.arena + mi.hblkhd); | |
e5a2b854 MP |
225 | rprintf(FINFO, " usmblks: %10d\n", mi.usmblks); |
226 | rprintf(FINFO, " fsmblks: %10d\n", mi.fsmblks); | |
227 | rprintf(FINFO, " uordblks: %10d (bytes used)\n", mi.uordblks); | |
228 | rprintf(FINFO, " fordblks: %10d (bytes free)\n", mi.fordblks); | |
229 | rprintf(FINFO, " keepcost: %10d (bytes in releasable chunk)\n", mi.keepcost); | |
230 | #endif /* HAVE_MALLINFO */ | |
231 | } | |
232 | ||
233 | ||
0882faa2 | 234 | /* Start the remote shell. cmd may be NULL to use the default. */ |
6c2e5b56 WD |
235 | static pid_t do_cmd(char *cmd, char *machine, char *user, char *path, |
236 | int *f_in, int *f_out) | |
c627d613 | 237 | { |
6c2e5b56 | 238 | int i, argc = 0; |
887e553f | 239 | char *args[MAX_ARGS]; |
19b27a48 | 240 | pid_t ret; |
6c2e5b56 | 241 | char *tok, *dir = NULL; |
bb4aa89c | 242 | int dash_l_set = 0; |
366345fe | 243 | |
088aac85 | 244 | if (!read_batch && !local_server) { |
9af87151 | 245 | char *rsh_env = getenv(RSYNC_RSH_ENV); |
366345fe | 246 | if (!cmd) |
9af87151 | 247 | cmd = rsh_env; |
366345fe AT |
248 | if (!cmd) |
249 | cmd = RSYNC_RSH; | |
250 | cmd = strdup(cmd); | |
d9c7edf6 | 251 | if (!cmd) |
366345fe AT |
252 | goto oom; |
253 | ||
887e553f | 254 | for (tok = strtok(cmd, " "); tok; tok = strtok(NULL, " ")) { |
e7a392c7 WD |
255 | /* Comparison leaves rooms for server_options(). */ |
256 | if (argc >= MAX_ARGS - 100) { | |
257 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
887e553f WD |
258 | exit_cleanup(RERR_SYNTAX); |
259 | } | |
366345fe | 260 | args[argc++] = tok; |
887e553f | 261 | } |
c627d613 | 262 | |
d9c7edf6 | 263 | /* check to see if we've already been given '-l user' in |
9af87151 | 264 | * the remote-shell command */ |
bb4aa89c WD |
265 | for (i = 0; i < argc-1; i++) { |
266 | if (!strcmp(args[i], "-l") && args[i+1][0] != '-') | |
267 | dash_l_set = 1; | |
268 | } | |
269 | ||
7b8356d0 | 270 | #if HAVE_REMSH |
366345fe AT |
271 | /* remsh (on HPUX) takes the arguments the other way around */ |
272 | args[argc++] = machine; | |
bb4aa89c | 273 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
274 | args[argc++] = "-l"; |
275 | args[argc++] = user; | |
276 | } | |
7b8356d0 | 277 | #else |
bb4aa89c | 278 | if (user && !(daemon_over_rsh && dash_l_set)) { |
366345fe AT |
279 | args[argc++] = "-l"; |
280 | args[argc++] = user; | |
281 | } | |
282 | args[argc++] = machine; | |
7b8356d0 | 283 | #endif |
c627d613 | 284 | |
366345fe | 285 | args[argc++] = rsync_path; |
c627d613 | 286 | |
9af87151 | 287 | if (blocking_io < 0) { |
90e22f4b WD |
288 | char *cp; |
289 | if ((cp = strrchr(cmd, '/')) != NULL) | |
290 | cp++; | |
291 | else | |
292 | cp = cmd; | |
293 | if (strcmp(cp, "rsh") == 0 || strcmp(cp, "remsh") == 0) | |
294 | blocking_io = 1; | |
66b71163 | 295 | } |
e384bfbd | 296 | |
93689aa5 | 297 | server_options(args,&argc); |
e7a392c7 WD |
298 | |
299 | if (argc >= MAX_ARGS - 2) { | |
300 | rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n"); | |
301 | exit_cleanup(RERR_SYNTAX); | |
302 | } | |
366345fe | 303 | } |
c627d613 | 304 | |
366345fe | 305 | args[argc++] = "."; |
76076c4b | 306 | |
d9c7edf6 | 307 | if (!daemon_over_rsh && path && *path) |
366345fe | 308 | args[argc++] = path; |
c627d613 | 309 | |
366345fe | 310 | args[argc] = NULL; |
c627d613 | 311 | |
366345fe | 312 | if (verbose > 3) { |
9486289c | 313 | rprintf(FINFO,"cmd="); |
e7a392c7 | 314 | for (i = 0; i < argc; i++) |
9486289c AT |
315 | rprintf(FINFO,"%s ",args[i]); |
316 | rprintf(FINFO,"\n"); | |
366345fe AT |
317 | } |
318 | ||
c0d8e84c WD |
319 | if (read_batch) { |
320 | int from_gen_pipe[2]; | |
321 | if (fd_pair(from_gen_pipe) < 0) { | |
322 | rsyserr(FERROR, errno, "pipe"); | |
323 | exit_cleanup(RERR_IPC); | |
324 | } | |
325 | batch_gen_fd = from_gen_pipe[0]; | |
326 | *f_out = from_gen_pipe[1]; | |
327 | *f_in = batch_fd; | |
328 | ret = -1; /* no child pid */ | |
329 | } else if (local_server) { | |
b1df18d7 WD |
330 | /* If the user didn't request --[no-]whole-file, force |
331 | * it on, but only if we're not batch processing. */ | |
c0d8e84c | 332 | if (whole_file < 0 && !write_batch) |
b1df18d7 | 333 | whole_file = 1; |
25d34a5c | 334 | ret = local_child(argc, args, f_in, f_out, child_main); |
c0d8e84c | 335 | } else |
366345fe | 336 | ret = piped_child(args,f_in,f_out); |
c627d613 | 337 | |
3a69fad0 WD |
338 | if (dir) |
339 | free(dir); | |
82306bf6 | 340 | |
366345fe | 341 | return ret; |
c627d613 AT |
342 | |
343 | oom: | |
366345fe AT |
344 | out_of_memory("do_cmd"); |
345 | return 0; /* not reached */ | |
c627d613 AT |
346 | } |
347 | ||
348 | ||
c627d613 AT |
349 | static char *get_local_name(struct file_list *flist,char *name) |
350 | { | |
7a6421fa | 351 | STRUCT_STAT st; |
87cc45e1 | 352 | int e; |
c627d613 | 353 | |
c95da96a | 354 | if (verbose > 2) |
d9c7edf6 | 355 | rprintf(FINFO,"get_local_name count=%d %s\n", |
1f0610ef DD |
356 | flist->count, NS(name)); |
357 | ||
d9c7edf6 | 358 | if (!name) |
1f0610ef | 359 | return NULL; |
c95da96a | 360 | |
1ff5450d AT |
361 | if (do_stat(name,&st) == 0) { |
362 | if (S_ISDIR(st.st_mode)) { | |
59187666 | 363 | if (!push_dir(name)) { |
982e05bb WD |
364 | rsyserr(FERROR, errno, "push_dir#1 %s failed", |
365 | full_fname(name)); | |
65417579 | 366 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
367 | } |
368 | return NULL; | |
369 | } | |
370 | if (flist->count > 1) { | |
371 | rprintf(FERROR,"ERROR: destination must be a directory when copying more than 1 file\n"); | |
65417579 | 372 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
373 | } |
374 | return name; | |
375 | } | |
376 | ||
87cc45e1 | 377 | if (flist->count <= 1 && ((e = strlen(name)) <= 1 || name[e-1] != '/')) |
1ff5450d AT |
378 | return name; |
379 | ||
1ff5450d | 380 | if (do_mkdir(name,0777 & ~orig_umask) != 0) { |
982e05bb | 381 | rsyserr(FERROR, errno, "mkdir %s failed", full_fname(name)); |
65417579 | 382 | exit_cleanup(RERR_FILEIO); |
e5a96f0f WD |
383 | } |
384 | if (verbose > 0) | |
385 | rprintf(FINFO, "created directory %s\n", name); | |
386 | ||
387 | if (dry_run) { | |
388 | dry_run++; | |
389 | return NULL; | |
1ff5450d AT |
390 | } |
391 | ||
59187666 | 392 | if (!push_dir(name)) { |
982e05bb WD |
393 | rsyserr(FERROR, errno, "push_dir#2 %s failed", |
394 | full_fname(name)); | |
65417579 | 395 | exit_cleanup(RERR_FILESELECT); |
1ff5450d AT |
396 | } |
397 | ||
398 | return NULL; | |
c627d613 AT |
399 | } |
400 | ||
401 | ||
9486289c | 402 | static void do_server_sender(int f_in, int f_out, int argc,char *argv[]) |
c627d613 | 403 | { |
7a6421fa AT |
404 | int i; |
405 | struct file_list *flist; | |
406 | char *dir = argv[0]; | |
c627d613 | 407 | |
45e08edb WD |
408 | if (verbose > 2) { |
409 | rprintf(FINFO, "server_sender starting pid=%ld\n", | |
410 | (long)getpid()); | |
411 | } | |
d9c7edf6 | 412 | |
2adbcdc7 | 413 | if (am_daemon && lp_write_only(module_id)) { |
7a92ded3 WD |
414 | rprintf(FERROR, "ERROR: module is write only\n"); |
415 | exit_cleanup(RERR_SYNTAX); | |
416 | return; | |
417 | } | |
418 | ||
59187666 | 419 | if (!relative_paths && !push_dir(dir)) { |
982e05bb WD |
420 | rsyserr(FERROR, errno, "push_dir#3 %s failed", |
421 | full_fname(dir)); | |
65417579 | 422 | exit_cleanup(RERR_FILESELECT); |
7a6421fa AT |
423 | } |
424 | argc--; | |
425 | argv++; | |
d9c7edf6 | 426 | |
7a6421fa AT |
427 | if (strcmp(dir,".")) { |
428 | int l = strlen(dir); | |
d9c7edf6 | 429 | if (strcmp(dir,"/") == 0) |
7a6421fa | 430 | l = 0; |
e7a392c7 | 431 | for (i = 0; i < argc; i++) |
7a6421fa AT |
432 | argv[i] += l+1; |
433 | } | |
c627d613 | 434 | |
7a6421fa | 435 | if (argc == 0 && recurse) { |
e1f67417 | 436 | argc = 1; |
7a6421fa AT |
437 | argv--; |
438 | argv[0] = "."; | |
439 | } | |
d9c7edf6 | 440 | |
7a6421fa | 441 | flist = send_file_list(f_out,argc,argv); |
8d9dc9f9 AT |
442 | if (!flist || flist->count == 0) { |
443 | exit_cleanup(0); | |
444 | } | |
445 | ||
da3478b2 WD |
446 | io_start_buffering_in(); |
447 | io_start_buffering_out(); | |
448 | ||
7a6421fa | 449 | send_files(flist,f_out,f_in); |
f1e3656e | 450 | io_flush(FULL_FLUSH); |
7a6421fa | 451 | report(f_out); |
d04e9c51 | 452 | if (protocol_version >= 24) { |
d9c7edf6 | 453 | /* final goodbye message */ |
64c3523a WD |
454 | read_int(f_in); |
455 | } | |
f1e3656e | 456 | io_flush(FULL_FLUSH); |
7a6421fa | 457 | exit_cleanup(0); |
c627d613 AT |
458 | } |
459 | ||
460 | ||
dc5ddbcc AT |
461 | static int do_recv(int f_in,int f_out,struct file_list *flist,char *local_name) |
462 | { | |
d186eb1a | 463 | int pid; |
e1f67417 | 464 | int status = 0; |
41cfde6b | 465 | int error_pipe[2], name_pipe[2]; |
c3fad2e2 | 466 | BOOL need_name_pipe = basis_dir[0] && !dry_run; |
dc5ddbcc | 467 | |
bb6721dc WD |
468 | /* The receiving side mustn't obey this, or an existing symlink that |
469 | * points to an identical file won't be replaced by the referent. */ | |
470 | copy_links = 0; | |
471 | ||
d186eb1a AT |
472 | if (preserve_hard_links) |
473 | init_hard_links(flist); | |
dc5ddbcc | 474 | |
6957ae33 AT |
475 | if (!delete_after) { |
476 | /* I moved this here from recv_files() to prevent a race condition */ | |
58c5c245 | 477 | if (recurse && delete_mode && !local_name && flist->count > 0) |
6957ae33 | 478 | delete_files(flist); |
6957ae33 AT |
479 | } |
480 | ||
41cfde6b WD |
481 | if (fd_pair(error_pipe) < 0 |
482 | || (need_name_pipe && fd_pair(name_pipe) < 0)) { | |
ab759cd2 | 483 | rsyserr(FERROR, errno, "pipe failed in do_recv"); |
c8f2f857 | 484 | exit_cleanup(RERR_IPC); |
554e0a8d | 485 | } |
d9c7edf6 | 486 | |
f1e3656e | 487 | io_flush(NORMAL_FLUSH); |
c6e7fcb4 | 488 | |
ba449e44 | 489 | if ((pid = do_fork()) == -1) { |
c8f2f857 | 490 | rsyserr(FERROR, errno, "fork failed in do_recv"); |
ba449e44 WD |
491 | exit_cleanup(RERR_IPC); |
492 | } | |
493 | ||
494 | if (pid == 0) { | |
554e0a8d | 495 | close(error_pipe[0]); |
41cfde6b WD |
496 | if (need_name_pipe) { |
497 | close(name_pipe[1]); | |
498 | set_blocking(name_pipe[0]); | |
499 | } else | |
500 | name_pipe[0] = -1; | |
3a69fad0 WD |
501 | if (f_in != f_out) |
502 | close(f_out); | |
e08c9610 | 503 | |
554e0a8d | 504 | /* we can't let two processes write to the socket at one time */ |
9eeb3b9c | 505 | close_multiplexing_out(); |
554e0a8d AT |
506 | |
507 | /* set place to send errors */ | |
f1e3656e | 508 | set_msg_fd_out(error_pipe[1]); |
554e0a8d | 509 | |
41cfde6b | 510 | recv_files(f_in, flist, local_name, name_pipe[0]); |
f1e3656e | 511 | io_flush(FULL_FLUSH); |
ba5e128d | 512 | report(f_in); |
e08c9610 | 513 | |
f1e3656e WD |
514 | send_msg(MSG_DONE, "", 0); |
515 | io_flush(FULL_FLUSH); | |
4a748188 | 516 | /* finally we go to sleep until our parent kills us |
9af87151 WD |
517 | * with a USR2 signal. We sleep for a short time as on |
518 | * some OSes a signal won't interrupt a sleep! */ | |
f1e3656e WD |
519 | while (1) |
520 | msleep(20); | |
d186eb1a | 521 | } |
dc5ddbcc | 522 | |
b695f242 | 523 | am_generator = 1; |
9eeb3b9c | 524 | close_multiplexing_in(); |
b9f592fb WD |
525 | if (write_batch) |
526 | stop_write_batch(); | |
b695f242 | 527 | |
554e0a8d | 528 | close(error_pipe[1]); |
41cfde6b WD |
529 | if (need_name_pipe) { |
530 | close(name_pipe[0]); | |
531 | set_nonblocking(name_pipe[1]); | |
532 | } else | |
533 | name_pipe[1] = -1; | |
3a69fad0 WD |
534 | if (f_in != f_out) |
535 | close(f_in); | |
e1b3d5c4 | 536 | |
da3478b2 | 537 | io_start_buffering_out(); |
b3e10ed7 | 538 | |
f1e3656e | 539 | set_msg_fd_in(error_pipe[0]); |
554e0a8d | 540 | |
41cfde6b | 541 | generate_files(f_out, flist, local_name, name_pipe[1]); |
8d9dc9f9 | 542 | |
e5fbaa71 | 543 | report(-1); |
f1e3656e | 544 | io_flush(FULL_FLUSH); |
d04e9c51 | 545 | if (protocol_version >= 24) { |
8ada7518 AT |
546 | /* send a final goodbye message */ |
547 | write_int(f_out, -1); | |
548 | } | |
f1e3656e | 549 | io_flush(FULL_FLUSH); |
8ada7518 | 550 | |
f1e3656e | 551 | set_msg_fd_in(-1); |
089a2435 | 552 | kill(pid, SIGUSR2); |
d79d1c69 | 553 | wait_process(pid, &status); |
d186eb1a | 554 | return status; |
dc5ddbcc AT |
555 | } |
556 | ||
c627d613 | 557 | |
9486289c | 558 | static void do_server_recv(int f_in, int f_out, int argc,char *argv[]) |
c627d613 | 559 | { |
7a6421fa AT |
560 | int status; |
561 | struct file_list *flist; | |
6c2e5b56 | 562 | char *local_name = NULL; |
7a6421fa | 563 | char *dir = NULL; |
07bff66f WD |
564 | int save_verbose = verbose; |
565 | ||
566 | if (filesfrom_fd >= 0) { | |
567 | /* We can't mix messages with files-from data on the socket, | |
568 | * so temporarily turn off verbose messages. */ | |
569 | verbose = 0; | |
570 | } | |
f0fca04e | 571 | |
45e08edb WD |
572 | if (verbose > 2) { |
573 | rprintf(FINFO, "server_recv(%d) starting pid=%ld\n", | |
574 | argc, (long)getpid()); | |
575 | } | |
09b7f5db | 576 | |
2adbcdc7 | 577 | if (am_daemon && lp_read_only(module_id)) { |
09b7f5db AT |
578 | rprintf(FERROR,"ERROR: module is read only\n"); |
579 | exit_cleanup(RERR_SYNTAX); | |
580 | return; | |
581 | } | |
582 | ||
d9c7edf6 | 583 | |
7a6421fa AT |
584 | if (argc > 0) { |
585 | dir = argv[0]; | |
586 | argc--; | |
587 | argv++; | |
59187666 | 588 | if (!am_daemon && !push_dir(dir)) { |
982e05bb WD |
589 | rsyserr(FERROR, errno, "push_dir#4 %s failed", |
590 | full_fname(dir)); | |
65417579 | 591 | exit_cleanup(RERR_FILESELECT); |
d9c7edf6 | 592 | } |
7a6421fa | 593 | } |
c627d613 | 594 | |
da3478b2 | 595 | io_start_buffering_in(); |
b33b791e | 596 | if (delete_mode && !delete_excluded) |
7a6421fa | 597 | recv_exclude_list(f_in); |
c627d613 | 598 | |
7c2a9e76 | 599 | if (filesfrom_fd >= 0) { |
07bff66f WD |
600 | /* We need to send the files-from names to the sender at the |
601 | * same time that we receive the file-list from them, so we | |
602 | * need the IO routines to automatically write out the names | |
603 | * onto our f_out socket as we read the file-list. This | |
604 | * avoids both deadlock and extra delays/buffers. */ | |
7c2a9e76 WD |
605 | io_set_filesfrom_fds(filesfrom_fd, f_out); |
606 | filesfrom_fd = -1; | |
607 | } | |
608 | ||
b9f592fb | 609 | flist = recv_file_list(f_in); |
07bff66f | 610 | verbose = save_verbose; |
4c36a13e AT |
611 | if (!flist) { |
612 | rprintf(FERROR,"server_recv: recv_file_list error\n"); | |
65417579 | 613 | exit_cleanup(RERR_FILESELECT); |
7a6421fa | 614 | } |
d9c7edf6 WD |
615 | |
616 | if (argc > 0) { | |
7a6421fa AT |
617 | if (strcmp(dir,".")) { |
618 | argv[0] += strlen(dir); | |
3a69fad0 WD |
619 | if (argv[0][0] == '/') |
620 | argv[0]++; | |
7a6421fa AT |
621 | } |
622 | local_name = get_local_name(flist,argv[0]); | |
623 | } | |
c627d613 | 624 | |
7a6421fa AT |
625 | status = do_recv(f_in,f_out,flist,local_name); |
626 | exit_cleanup(status); | |
c627d613 AT |
627 | } |
628 | ||
629 | ||
734a94a2 | 630 | int child_main(int argc, char *argv[]) |
25d34a5c MP |
631 | { |
632 | start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv); | |
734a94a2 | 633 | return 0; |
25d34a5c MP |
634 | } |
635 | ||
636 | ||
9486289c | 637 | void start_server(int f_in, int f_out, int argc, char *argv[]) |
366345fe | 638 | { |
f0359dd0 AT |
639 | set_nonblocking(f_in); |
640 | set_nonblocking(f_out); | |
641 | ||
da3478b2 WD |
642 | io_set_sock_fds(f_in, f_out); |
643 | setup_protocol(f_out, f_in); | |
644 | ||
d04e9c51 | 645 | if (protocol_version >= 23) |
da3478b2 | 646 | io_start_multiplex_out(); |
7a6421fa | 647 | |
7a6421fa | 648 | if (am_sender) { |
83926d3c | 649 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
9b3318b0 | 650 | |
b9f592fb WD |
651 | recv_exclude_list(f_in); |
652 | if (cvs_exclude) | |
653 | add_cvs_excludes(); | |
7a6421fa AT |
654 | do_server_sender(f_in, f_out, argc, argv); |
655 | } else { | |
656 | do_server_recv(f_in, f_out, argc, argv); | |
657 | } | |
658 | exit_cleanup(0); | |
366345fe AT |
659 | } |
660 | ||
0ba48136 MP |
661 | |
662 | /* | |
663 | * This is called once the connection has been negotiated. It is used | |
664 | * for rsyncd, remote-shell, and local connections. | |
665 | */ | |
19b27a48 | 666 | int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[]) |
9486289c | 667 | { |
088aac85 | 668 | struct file_list *flist = NULL; |
9486289c AT |
669 | int status = 0, status2 = 0; |
670 | char *local_name = NULL; | |
19b27a48 AT |
671 | |
672 | cleanup_child_pid = pid; | |
b9f592fb | 673 | if (read_batch) { |
b9f592fb WD |
674 | assert(am_sender == 0); |
675 | } else { | |
676 | set_nonblocking(f_in); | |
677 | set_nonblocking(f_out); | |
678 | } | |
f0359dd0 | 679 | |
da3478b2 | 680 | io_set_sock_fds(f_in, f_out); |
6d7b6081 AT |
681 | setup_protocol(f_out,f_in); |
682 | ||
b9f592fb | 683 | if (protocol_version >= 23 && !read_batch) |
da3478b2 | 684 | io_start_multiplex_in(); |
d9c7edf6 | 685 | |
18882701 WD |
686 | /* We set our stderr file handle to blocking because ssh might have |
687 | * set it to non-blocking. This can be particularly troublesome if | |
688 | * stderr is a clone of stdout, because ssh would have set our stdout | |
689 | * to non-blocking at the same time (which can easily cause us to lose | |
690 | * output from our print statements). This kluge shouldn't cause ssh | |
691 | * any problems for how we use it. Note also that we delayed setting | |
692 | * this until after the above protocol setup so that we know for sure | |
693 | * that ssh is done twiddling its file descriptors. */ | |
694 | set_blocking(STDERR_FILENO); | |
695 | ||
9486289c | 696 | if (am_sender) { |
83926d3c | 697 | keep_dirlinks = 0; /* Must be disabled on the sender. */ |
da3478b2 | 698 | io_start_buffering_out(); |
a0a33ee5 WD |
699 | if (!remote_filesfrom_file) |
700 | set_msg_fd_in(f_in); | |
9486289c AT |
701 | if (cvs_exclude) |
702 | add_cvs_excludes(); | |
d9c7edf6 | 703 | if (delete_mode && !delete_excluded) |
9486289c | 704 | send_exclude_list(f_out); |
7c2a9e76 WD |
705 | if (remote_filesfrom_file) |
706 | filesfrom_fd = f_in; | |
b9f592fb WD |
707 | |
708 | if (write_batch) | |
709 | start_write_batch(f_out); | |
64c3523a | 710 | if (!read_batch) /* don't write to pipe */ |
d9c7edf6 | 711 | flist = send_file_list(f_out,argc,argv); |
a0a33ee5 | 712 | set_msg_fd_in(-1); |
d9c7edf6 | 713 | if (verbose > 3) |
9486289c | 714 | rprintf(FINFO,"file list sent\n"); |
e1b3d5c4 | 715 | |
f1e3656e | 716 | io_flush(NORMAL_FLUSH); |
9486289c | 717 | send_files(flist,f_out,f_in); |
f1e3656e | 718 | io_flush(FULL_FLUSH); |
d04e9c51 | 719 | if (protocol_version >= 24) { |
d9c7edf6 | 720 | /* final goodbye message */ |
6c65e146 AT |
721 | read_int(f_in); |
722 | } | |
9486289c AT |
723 | if (pid != -1) { |
724 | if (verbose > 3) | |
08a740ff | 725 | rprintf(FINFO,"client_run waiting on %d\n", (int) pid); |
f1e3656e | 726 | io_flush(FULL_FLUSH); |
d79d1c69 | 727 | wait_process(pid, &status); |
9486289c | 728 | } |
3d382777 | 729 | report(-1); |
f1e3656e | 730 | io_flush(FULL_FLUSH); |
9486289c AT |
731 | exit_cleanup(status); |
732 | } | |
f7632fc6 | 733 | |
1082b52b | 734 | if (argc == 0) |
27e3e9c9 | 735 | list_only = 1; |
d9c7edf6 | 736 | |
1082b52b | 737 | if (!read_batch) |
d9c7edf6 WD |
738 | send_exclude_list(f_out); |
739 | ||
7c2a9e76 WD |
740 | if (filesfrom_fd >= 0) { |
741 | io_set_filesfrom_fds(filesfrom_fd, f_out); | |
742 | filesfrom_fd = -1; | |
743 | } | |
744 | ||
b9f592fb WD |
745 | if (write_batch) |
746 | start_write_batch(f_in); | |
9486289c AT |
747 | flist = recv_file_list(f_in); |
748 | if (!flist || flist->count == 0) { | |
796d484b | 749 | rprintf(FINFO, "client: nothing to do: " |
d9c7edf6 WD |
750 | "perhaps you need to specify some filenames or " |
751 | "the --recursive option?\n"); | |
9486289c AT |
752 | exit_cleanup(0); |
753 | } | |
d9c7edf6 | 754 | |
9486289c | 755 | local_name = get_local_name(flist,argv[0]); |
d9c7edf6 | 756 | |
9486289c | 757 | status2 = do_recv(f_in,f_out,flist,local_name); |
d9c7edf6 | 758 | |
9486289c | 759 | if (pid != -1) { |
8d9dc9f9 | 760 | if (verbose > 3) |
08a740ff | 761 | rprintf(FINFO,"client_run2 waiting on %d\n", (int) pid); |
f1e3656e | 762 | io_flush(FULL_FLUSH); |
d79d1c69 | 763 | wait_process(pid, &status); |
9486289c | 764 | } |
d9c7edf6 | 765 | |
ff81e809 | 766 | return MAX(status, status2); |
9486289c AT |
767 | } |
768 | ||
7169bb4a MP |
769 | static int copy_argv (char *argv[]) |
770 | { | |
771 | int i; | |
772 | ||
773 | for (i = 0; argv[i]; i++) { | |
774 | if (!(argv[i] = strdup(argv[i]))) { | |
775 | rprintf (FERROR, "out of memory at %s(%d)\n", | |
776 | __FILE__, __LINE__); | |
777 | return RERR_MALLOC; | |
778 | } | |
779 | } | |
780 | ||
781 | return 0; | |
782 | } | |
783 | ||
784 | ||
c1a04ecb | 785 | /** |
0ba48136 MP |
786 | * Start a client for either type of remote connection. Work out |
787 | * whether the arguments request a remote shell or rsyncd connection, | |
788 | * and call the appropriate connection function, then run_client. | |
0b4af330 MP |
789 | * |
790 | * Calls either start_socket_client (for sockets) or do_cmd and | |
791 | * client_run (for ssh). | |
c1a04ecb | 792 | **/ |
fc8a6b97 | 793 | static int start_client(int argc, char *argv[]) |
5d6bcd44 AT |
794 | { |
795 | char *p; | |
796 | char *shell_machine = NULL; | |
797 | char *shell_path = NULL; | |
798 | char *shell_user = NULL; | |
19b27a48 AT |
799 | int ret; |
800 | pid_t pid; | |
5d6bcd44 | 801 | int f_in,f_out; |
7169bb4a MP |
802 | int rc; |
803 | ||
804 | /* Don't clobber argv[] so that ps(1) can still show the right | |
d9c7edf6 | 805 | * command line. */ |
75aeac44 | 806 | if ((rc = copy_argv(argv))) |
7169bb4a | 807 | return rc; |
5d6bcd44 | 808 | |
75aeac44 | 809 | /* rsync:// always uses rsync server over direct socket connection */ |
b9f592fb WD |
810 | if (strncasecmp(URL_PREFIX, argv[0], strlen(URL_PREFIX)) == 0 |
811 | && !read_batch) { | |
f7632fc6 AT |
812 | char *host, *path; |
813 | ||
7169bb4a | 814 | host = argv[0] + strlen(URL_PREFIX); |
f7632fc6 AT |
815 | p = strchr(host,'/'); |
816 | if (p) { | |
50b31539 | 817 | *p = '\0'; |
f7632fc6 | 818 | path = p+1; |
50b31539 | 819 | } else |
a125c82a | 820 | path = ""; |
50b31539 WD |
821 | if (*host == '[' && (p = strchr(host, ']')) != NULL) { |
822 | host++; | |
823 | *p++ = '\0'; | |
824 | if (*p != ':') | |
825 | p = NULL; | |
826 | } else | |
827 | p = strchr(host, ':'); | |
2acf81eb DD |
828 | if (p) { |
829 | rsync_port = atoi(p+1); | |
50b31539 | 830 | *p = '\0'; |
cf510ad2 | 831 | } |
f7632fc6 AT |
832 | return start_socket_client(host, path, argc-1, argv+1); |
833 | } | |
834 | ||
d16c245f | 835 | if (!read_batch) { /* for read_batch, NO source is specified */ |
a125c82a | 836 | p = find_colon(argv[0]); |
d16c245f | 837 | if (p) { /* source is remote */ |
7c2a9e76 WD |
838 | if (remote_filesfrom_file |
839 | && remote_filesfrom_file != files_from + 1 | |
840 | && strncmp(files_from, argv[0], p-argv[0]+1) != 0) { | |
841 | rprintf(FERROR, | |
50b31539 | 842 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
843 | exit_cleanup(RERR_SYNTAX); |
844 | } | |
d9c7edf6 WD |
845 | if (p[1] == ':') { /* double colon */ |
846 | *p = 0; | |
847 | if (!shell_cmd) { | |
848 | return start_socket_client(argv[0], p+2, | |
849 | argc-1, argv+1); | |
850 | } | |
851 | p++; | |
852 | daemon_over_rsh = 1; | |
75aeac44 | 853 | } |
3591c066 | 854 | |
d16c245f | 855 | if (argc < 1) { /* destination required */ |
d9c7edf6 WD |
856 | usage(FERROR); |
857 | exit_cleanup(RERR_SYNTAX); | |
858 | } | |
a125c82a | 859 | |
d9c7edf6 WD |
860 | am_sender = 0; |
861 | *p = 0; | |
862 | shell_machine = argv[0]; | |
863 | shell_path = p+1; | |
d9c7edf6 | 864 | argv++; |
d16c245f | 865 | } else { /* source is local */ |
d9c7edf6 WD |
866 | am_sender = 1; |
867 | ||
868 | /* rsync:// destination uses rsync server over direct socket */ | |
869 | if (strncasecmp(URL_PREFIX, argv[argc-1], strlen(URL_PREFIX)) == 0) { | |
870 | char *host, *path; | |
871 | ||
872 | host = argv[argc-1] + strlen(URL_PREFIX); | |
873 | p = strchr(host,'/'); | |
874 | if (p) { | |
50b31539 | 875 | *p = '\0'; |
d9c7edf6 | 876 | path = p+1; |
50b31539 | 877 | } else |
d9c7edf6 | 878 | path = ""; |
50b31539 WD |
879 | if (*host == '[' && (p = strchr(host, ']')) != NULL) { |
880 | host++; | |
881 | *p++ = '\0'; | |
882 | if (*p != ':') | |
883 | p = NULL; | |
884 | } else | |
885 | p = strchr(host, ':'); | |
d9c7edf6 WD |
886 | if (p) { |
887 | rsync_port = atoi(p+1); | |
50b31539 | 888 | *p = '\0'; |
cf510ad2 | 889 | } |
d9c7edf6 | 890 | return start_socket_client(host, path, argc-1, argv); |
a125c82a | 891 | } |
d9c7edf6 | 892 | |
d16c245f | 893 | p = find_colon(argv[argc-1]); /* look in dest arg */ |
7c2a9e76 WD |
894 | if (p && remote_filesfrom_file |
895 | && remote_filesfrom_file != files_from + 1 | |
896 | && strncmp(files_from, argv[argc-1], p-argv[argc-1]+1) != 0) { | |
897 | rprintf(FERROR, | |
50b31539 | 898 | "--files-from hostname is not the same as the transfer hostname\n"); |
7c2a9e76 WD |
899 | exit_cleanup(RERR_SYNTAX); |
900 | } | |
d16c245f | 901 | if (!p) { /* no colon found, so src & dest are local */ |
d9c7edf6 | 902 | local_server = 1; |
7c2a9e76 WD |
903 | if (remote_filesfrom_file) { |
904 | rprintf(FERROR, | |
50b31539 | 905 | "--files-from cannot be remote when the transfer is local\n"); |
7c2a9e76 WD |
906 | exit_cleanup(RERR_SYNTAX); |
907 | } | |
d9c7edf6 | 908 | } else if (p[1] == ':') { /* double colon */ |
a125c82a | 909 | *p = 0; |
d9c7edf6 WD |
910 | if (!shell_cmd) { |
911 | return start_socket_client(argv[argc-1], p+2, | |
912 | argc-1, argv); | |
913 | } | |
914 | p++; | |
915 | daemon_over_rsh = 1; | |
a125c82a | 916 | } |
a125c82a | 917 | |
d9c7edf6 WD |
918 | if (argc < 2) { |
919 | usage(FERROR); | |
920 | exit_cleanup(RERR_SYNTAX); | |
75aeac44 | 921 | } |
3591c066 | 922 | |
d9c7edf6 WD |
923 | if (local_server) { |
924 | shell_machine = NULL; | |
925 | shell_path = argv[argc-1]; | |
926 | } else { | |
927 | *p = 0; | |
928 | shell_machine = argv[argc-1]; | |
929 | shell_path = p+1; | |
930 | } | |
5d6bcd44 | 931 | } |
d16c245f WD |
932 | argc--; |
933 | } else { /* read_batch */ | |
d9c7edf6 WD |
934 | local_server = 1; |
935 | shell_path = argv[argc-1]; | |
b9f592fb WD |
936 | if (find_colon(shell_path)) { |
937 | rprintf(FERROR, "remote destination is not allowed with --read-batch\n"); | |
938 | exit_cleanup(RERR_SYNTAX); | |
939 | } | |
6902ed17 MP |
940 | } |
941 | ||
5d6bcd44 | 942 | if (shell_machine) { |
6fc048f4 | 943 | p = strrchr(shell_machine,'@'); |
5d6bcd44 AT |
944 | if (p) { |
945 | *p = 0; | |
946 | shell_user = shell_machine; | |
947 | shell_machine = p+1; | |
948 | } | |
949 | } | |
950 | ||
951 | if (verbose > 3) { | |
9486289c | 952 | rprintf(FINFO,"cmd=%s machine=%s user=%s path=%s\n", |
5d6bcd44 AT |
953 | shell_cmd?shell_cmd:"", |
954 | shell_machine?shell_machine:"", | |
955 | shell_user?shell_user:"", | |
956 | shell_path?shell_path:""); | |
957 | } | |
d9c7edf6 | 958 | |
d16c245f | 959 | /* for remote source, only single dest arg can remain ... */ |
f7632fc6 | 960 | if (!am_sender && argc > 1) { |
5d6bcd44 | 961 | usage(FERROR); |
65417579 | 962 | exit_cleanup(RERR_SYNTAX); |
5d6bcd44 | 963 | } |
27e3e9c9 | 964 | |
d16c245f WD |
965 | /* ... or no dest at all */ |
966 | if (!am_sender && argc == 0) { | |
27e3e9c9 AT |
967 | list_only = 1; |
968 | } | |
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 | } |