Commit | Line | Data |
---|---|---|
2f03f956 AT |
1 | /* |
2 | Copyright (C) Andrew Tridgell 1996 | |
3 | Copyright (C) Paul Mackerras 1996 | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | */ | |
19 | ||
20 | #include "rsync.h" | |
21 | ||
22 | extern int verbose; | |
23 | extern int recurse; | |
24 | extern int delete_mode; | |
25 | extern int remote_version; | |
26 | extern int csum_length; | |
27 | extern struct stats stats; | |
28 | extern int dry_run; | |
29 | extern int am_server; | |
30 | extern int relative_paths; | |
31 | extern int preserve_hard_links; | |
32 | extern int cvs_exclude; | |
33 | extern int io_error; | |
34 | extern char *tmpdir; | |
375a4556 | 35 | extern char *compare_dest; |
53dd3135 DD |
36 | extern int make_backups; |
37 | extern char *backup_suffix; | |
2f03f956 | 38 | |
2f03f956 AT |
39 | static struct delete_list { |
40 | dev_t dev; | |
41 | INO_T inode; | |
42 | } *delete_list; | |
43 | static int dlist_len, dlist_alloc_len; | |
44 | ||
2f03f956 AT |
45 | /* yuck! This function wouldn't have been necessary if I had the sorting |
46 | algorithm right. Unfortunately fixing the sorting algorithm would introduce | |
47 | a backward incompatibility as file list indexes are sent over the link. | |
48 | */ | |
49 | static int delete_already_done(struct file_list *flist,int j) | |
50 | { | |
51 | int i; | |
52 | STRUCT_STAT st; | |
53 | ||
54 | if (link_stat(f_name(flist->files[j]), &st)) return 1; | |
55 | ||
56 | for (i=0;i<dlist_len;i++) { | |
57 | if (st.st_ino == delete_list[i].inode && | |
58 | st.st_dev == delete_list[i].dev) | |
59 | return 1; | |
60 | } | |
61 | ||
62 | return 0; | |
63 | } | |
64 | ||
65 | static void add_delete_entry(struct file_struct *file) | |
66 | { | |
67 | if (dlist_len == dlist_alloc_len) { | |
68 | dlist_alloc_len += 1024; | |
69 | delete_list = (struct delete_list *)Realloc(delete_list, sizeof(delete_list[0])*dlist_alloc_len); | |
70 | if (!delete_list) out_of_memory("add_delete_entry"); | |
71 | } | |
72 | ||
73 | delete_list[dlist_len].dev = file->dev; | |
74 | delete_list[dlist_len].inode = file->inode; | |
75 | dlist_len++; | |
76 | ||
77 | if (verbose > 3) | |
78 | rprintf(FINFO,"added %s to delete list\n", f_name(file)); | |
79 | } | |
80 | ||
81 | static void delete_one(struct file_struct *f) | |
82 | { | |
83 | if (!S_ISDIR(f->mode)) { | |
c7c11a0d | 84 | if (robust_unlink(f_name(f)) != 0) { |
2f03f956 AT |
85 | rprintf(FERROR,"unlink %s : %s\n",f_name(f),strerror(errno)); |
86 | } else if (verbose) { | |
87 | rprintf(FINFO,"deleting %s\n",f_name(f)); | |
88 | } | |
89 | } else { | |
90 | if (do_rmdir(f_name(f)) != 0) { | |
91 | if (errno != ENOTEMPTY && errno != EEXIST) | |
92 | rprintf(FERROR,"rmdir %s : %s\n",f_name(f),strerror(errno)); | |
93 | } else if (verbose) { | |
94 | rprintf(FINFO,"deleting directory %s\n",f_name(f)); | |
95 | } | |
96 | } | |
97 | } | |
98 | ||
99 | ||
100 | ||
101 | ||
102 | /* this deletes any files on the receiving side that are not present | |
103 | on the sending side. For version 1.6.4 I have changed the behaviour | |
104 | to match more closely what most people seem to expect of this option */ | |
6957ae33 | 105 | void delete_files(struct file_list *flist) |
2f03f956 AT |
106 | { |
107 | struct file_list *local_file_list; | |
108 | int i, j; | |
109 | char *name; | |
cda2ae84 | 110 | extern int module_id; |
0b73ca12 AT |
111 | extern int max_delete; |
112 | static int deletion_count; | |
2f03f956 AT |
113 | |
114 | if (cvs_exclude) | |
115 | add_cvs_excludes(); | |
116 | ||
cda2ae84 | 117 | if (io_error && !lp_ignore_errors(module_id)) { |
2f03f956 AT |
118 | rprintf(FINFO,"IO error encountered - skipping file deletion\n"); |
119 | return; | |
120 | } | |
121 | ||
122 | for (j=0;j<flist->count;j++) { | |
123 | if (!S_ISDIR(flist->files[j]->mode) || | |
124 | !(flist->files[j]->flags & FLAG_DELETE)) continue; | |
125 | ||
126 | if (remote_version < 19 && | |
127 | delete_already_done(flist, j)) continue; | |
128 | ||
129 | name = strdup(f_name(flist->files[j])); | |
130 | ||
131 | if (!(local_file_list = send_file_list(-1,1,&name))) { | |
132 | free(name); | |
133 | continue; | |
134 | } | |
135 | ||
136 | if (verbose > 1) | |
137 | rprintf(FINFO,"deleting in %s\n", name); | |
138 | ||
139 | for (i=local_file_list->count-1;i>=0;i--) { | |
0b73ca12 | 140 | if (max_delete && deletion_count > max_delete) break; |
2f03f956 AT |
141 | if (!local_file_list->files[i]->basename) continue; |
142 | if (remote_version < 19 && | |
143 | S_ISDIR(local_file_list->files[i]->mode)) | |
144 | add_delete_entry(local_file_list->files[i]); | |
145 | if (-1 == flist_find(flist,local_file_list->files[i])) { | |
53dd3135 DD |
146 | char *f = f_name(local_file_list->files[i]); |
147 | int k = strlen(f) - strlen(backup_suffix); | |
66203a98 | 148 | /* Hi Andrew, do we really need to play with backup_suffix here? */ |
53dd3135 DD |
149 | if (make_backups && ((k <= 0) || |
150 | (strcmp(f+k,backup_suffix) != 0))) { | |
151 | (void) make_backup(f); | |
152 | } else { | |
0b73ca12 | 153 | deletion_count++; |
53dd3135 DD |
154 | delete_one(local_file_list->files[i]); |
155 | } | |
156 | } | |
2f03f956 AT |
157 | } |
158 | flist_free(local_file_list); | |
159 | free(name); | |
160 | } | |
161 | } | |
162 | ||
163 | ||
164 | static int get_tmpname(char *fnametmp, char *fname) | |
165 | { | |
166 | char *f; | |
167 | ||
168 | /* open tmp file */ | |
169 | if (tmpdir) { | |
170 | f = strrchr(fname,'/'); | |
171 | if (f == NULL) | |
172 | f = fname; | |
173 | else | |
174 | f++; | |
175 | if (strlen(tmpdir)+strlen(f)+10 > MAXPATHLEN) { | |
176 | rprintf(FERROR,"filename too long\n"); | |
177 | return 0; | |
178 | } | |
37f9805d | 179 | slprintf(fnametmp,MAXPATHLEN, "%s/.%s.XXXXXX",tmpdir,f); |
2f03f956 AT |
180 | return 1; |
181 | } | |
182 | ||
183 | f = strrchr(fname,'/'); | |
184 | ||
185 | if (strlen(fname)+9 > MAXPATHLEN) { | |
186 | rprintf(FERROR,"filename too long\n"); | |
187 | return 0; | |
188 | } | |
189 | ||
190 | if (f) { | |
191 | *f = 0; | |
37f9805d | 192 | slprintf(fnametmp,MAXPATHLEN,"%s/.%s.XXXXXX", |
2f03f956 AT |
193 | fname,f+1); |
194 | *f = '/'; | |
195 | } else { | |
37f9805d | 196 | slprintf(fnametmp,MAXPATHLEN,".%s.XXXXXX",fname); |
2f03f956 AT |
197 | } |
198 | ||
199 | return 1; | |
200 | } | |
201 | ||
202 | ||
203 | static int receive_data(int f_in,struct map_struct *buf,int fd,char *fname, | |
204 | OFF_T total_size) | |
205 | { | |
206 | int i,n,remainder,len,count; | |
207 | OFF_T offset = 0; | |
208 | OFF_T offset2; | |
209 | char *data; | |
210 | static char file_sum1[MD4_SUM_LENGTH]; | |
211 | static char file_sum2[MD4_SUM_LENGTH]; | |
212 | char *map=NULL; | |
213 | ||
214 | count = read_int(f_in); | |
215 | n = read_int(f_in); | |
216 | remainder = read_int(f_in); | |
217 | ||
218 | sum_init(); | |
219 | ||
220 | for (i=recv_token(f_in,&data); i != 0; i=recv_token(f_in,&data)) { | |
221 | ||
222 | show_progress(offset, total_size); | |
223 | ||
224 | if (i > 0) { | |
225 | extern int cleanup_got_literal; | |
226 | ||
227 | if (verbose > 3) { | |
5f808dfb AT |
228 | rprintf(FINFO,"data recv %d at %.0f\n", |
229 | i,(double)offset); | |
2f03f956 AT |
230 | } |
231 | ||
232 | stats.literal_data += i; | |
233 | cleanup_got_literal = 1; | |
234 | ||
235 | sum_update(data,i); | |
236 | ||
237 | if (fd != -1 && write_file(fd,data,i) != i) { | |
238 | rprintf(FERROR,"write failed on %s : %s\n",fname,strerror(errno)); | |
65417579 | 239 | exit_cleanup(RERR_FILEIO); |
2f03f956 AT |
240 | } |
241 | offset += i; | |
242 | continue; | |
243 | } | |
244 | ||
245 | i = -(i+1); | |
5f808dfb | 246 | offset2 = i*(OFF_T)n; |
2f03f956 AT |
247 | len = n; |
248 | if (i == count-1 && remainder != 0) | |
249 | len = remainder; | |
250 | ||
251 | stats.matched_data += len; | |
252 | ||
253 | if (verbose > 3) | |
5f808dfb AT |
254 | rprintf(FINFO,"chunk[%d] of size %d at %.0f offset=%.0f\n", |
255 | i,len,(double)offset2,(double)offset); | |
2f03f956 AT |
256 | |
257 | map = map_ptr(buf,offset2,len); | |
258 | ||
259 | see_token(map, len); | |
260 | sum_update(map,len); | |
261 | ||
262 | if (fd != -1 && write_file(fd,map,len) != len) { | |
263 | rprintf(FERROR,"write failed on %s : %s\n", | |
264 | fname,strerror(errno)); | |
65417579 | 265 | exit_cleanup(RERR_FILEIO); |
2f03f956 AT |
266 | } |
267 | offset += len; | |
268 | } | |
269 | ||
270 | end_progress(); | |
271 | ||
272 | if (fd != -1 && offset > 0 && sparse_end(fd) != 0) { | |
273 | rprintf(FERROR,"write failed on %s : %s\n", | |
274 | fname,strerror(errno)); | |
65417579 | 275 | exit_cleanup(RERR_FILEIO); |
2f03f956 AT |
276 | } |
277 | ||
278 | sum_end(file_sum1); | |
279 | ||
280 | if (remote_version >= 14) { | |
281 | read_buf(f_in,file_sum2,MD4_SUM_LENGTH); | |
282 | if (verbose > 2) { | |
283 | rprintf(FINFO,"got file_sum\n"); | |
284 | } | |
285 | if (fd != -1 && | |
286 | memcmp(file_sum1,file_sum2,MD4_SUM_LENGTH) != 0) { | |
287 | return 0; | |
288 | } | |
289 | } | |
290 | return 1; | |
291 | } | |
292 | ||
293 | ||
66203a98 AT |
294 | /* main routine for receiver process. Receiver process runs on the |
295 | same host as the generator process. */ | |
2f03f956 AT |
296 | |
297 | int recv_files(int f_in,struct file_list *flist,char *local_name,int f_gen) | |
298 | { | |
299 | int fd1,fd2; | |
300 | STRUCT_STAT st; | |
301 | char *fname; | |
302 | char fnametmp[MAXPATHLEN]; | |
375a4556 DD |
303 | char *fnamecmp; |
304 | char fnamecmpbuf[MAXPATHLEN]; | |
2f03f956 AT |
305 | struct map_struct *buf; |
306 | int i; | |
307 | struct file_struct *file; | |
308 | int phase=0; | |
309 | int recv_ok; | |
1b7c47cb | 310 | extern struct stats stats; |
4df9f368 | 311 | extern int preserve_perms; |
57df171b | 312 | extern int delete_after; |
1b7c47cb | 313 | struct stats initial_stats; |
11a5a3c7 | 314 | |
2f03f956 AT |
315 | if (verbose > 2) { |
316 | rprintf(FINFO,"recv_files(%d) starting\n",flist->count); | |
317 | } | |
318 | ||
2f03f956 AT |
319 | while (1) { |
320 | cleanup_disable(); | |
321 | ||
322 | i = read_int(f_in); | |
323 | if (i == -1) { | |
324 | if (phase==0 && remote_version >= 13) { | |
325 | phase++; | |
326 | csum_length = SUM_LENGTH; | |
327 | if (verbose > 2) | |
328 | rprintf(FINFO,"recv_files phase=%d\n",phase); | |
329 | write_int(f_gen,-1); | |
330 | continue; | |
331 | } | |
332 | break; | |
333 | } | |
334 | ||
335 | if (i < 0 || i >= flist->count) { | |
336 | rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n", | |
337 | i, flist->count); | |
65417579 | 338 | exit_cleanup(RERR_PROTOCOL); |
2f03f956 AT |
339 | } |
340 | ||
341 | file = flist->files[i]; | |
342 | fname = f_name(file); | |
343 | ||
344 | stats.num_transferred_files++; | |
345 | stats.total_transferred_size += file->length; | |
346 | ||
347 | if (local_name) | |
348 | fname = local_name; | |
349 | ||
350 | if (dry_run) { | |
11a5a3c7 AT |
351 | if (!am_server) { |
352 | log_transfer(file, fname); | |
353 | } | |
2f03f956 AT |
354 | continue; |
355 | } | |
356 | ||
1b7c47cb AT |
357 | initial_stats = stats; |
358 | ||
2f03f956 AT |
359 | if (verbose > 2) |
360 | rprintf(FINFO,"recv_files(%s)\n",fname); | |
361 | ||
375a4556 DD |
362 | fnamecmp = fname; |
363 | ||
2f03f956 | 364 | /* open the file */ |
8c9fd200 | 365 | fd1 = do_open(fnamecmp, O_RDONLY, 0); |
375a4556 DD |
366 | |
367 | if ((fd1 == -1) && (compare_dest != NULL)) { | |
368 | /* try the file at compare_dest instead */ | |
37f9805d | 369 | slprintf(fnamecmpbuf,MAXPATHLEN,"%s/%s", |
375a4556 DD |
370 | compare_dest,fname); |
371 | fnamecmp = fnamecmpbuf; | |
8c9fd200 | 372 | fd1 = do_open(fnamecmp, O_RDONLY, 0); |
375a4556 | 373 | } |
2f03f956 AT |
374 | |
375 | if (fd1 != -1 && do_fstat(fd1,&st) != 0) { | |
375a4556 | 376 | rprintf(FERROR,"fstat %s : %s\n",fnamecmp,strerror(errno)); |
2f03f956 AT |
377 | receive_data(f_in,NULL,-1,NULL,file->length); |
378 | close(fd1); | |
379 | continue; | |
380 | } | |
381 | ||
382 | if (fd1 != -1 && !S_ISREG(st.st_mode)) { | |
375a4556 | 383 | rprintf(FERROR,"%s : not a regular file (recv_files)\n",fnamecmp); |
2f03f956 AT |
384 | receive_data(f_in,NULL,-1,NULL,file->length); |
385 | close(fd1); | |
386 | continue; | |
387 | } | |
388 | ||
4df9f368 AT |
389 | if (fd1 != -1 && !preserve_perms) { |
390 | /* if the file exists already and we aren't perserving | |
391 | presmissions then act as though the remote end sent | |
392 | us the file permissions we already have */ | |
393 | file->mode = st.st_mode; | |
394 | } | |
395 | ||
2f03f956 AT |
396 | if (fd1 != -1 && st.st_size > 0) { |
397 | buf = map_file(fd1,st.st_size); | |
398 | if (verbose > 2) | |
5f808dfb | 399 | rprintf(FINFO,"recv mapped %s of size %.0f\n",fnamecmp,(double)st.st_size); |
2f03f956 AT |
400 | } else { |
401 | buf = NULL; | |
402 | } | |
403 | ||
404 | if (!get_tmpname(fnametmp,fname)) { | |
405 | if (buf) unmap_file(buf); | |
406 | if (fd1 != -1) close(fd1); | |
407 | continue; | |
408 | } | |
409 | ||
d532c0f5 DD |
410 | /* mktemp is deliberately used here instead of mkstemp. |
411 | because O_EXCL is used on the open, the race condition | |
412 | is not a problem or a security hole, and we want to | |
413 | control the access permissions on the created file. */ | |
2f03f956 AT |
414 | if (NULL == do_mktemp(fnametmp)) { |
415 | rprintf(FERROR,"mktemp %s failed\n",fnametmp); | |
416 | receive_data(f_in,buf,-1,NULL,file->length); | |
417 | if (buf) unmap_file(buf); | |
418 | if (fd1 != -1) close(fd1); | |
419 | continue; | |
420 | } | |
421 | ||
422 | /* we initially set the perms without the | |
423 | setuid/setgid bits to ensure that there is no race | |
424 | condition. They are then correctly updated after | |
425 | the lchown. Thanks to snabb@epipe.fi for pointing | |
972a3619 DD |
426 | this out. We also set it initially without group |
427 | access because of a similar race condition. */ | |
2f03f956 | 428 | fd2 = do_open(fnametmp,O_WRONLY|O_CREAT|O_EXCL, |
972a3619 | 429 | file->mode & INITACCESSPERMS); |
2f03f956 | 430 | |
752eaba4 DD |
431 | /* in most cases parent directories will already exist |
432 | because their information should have been previously | |
433 | transferred, but that may not be the case with -R */ | |
434 | if (fd2 == -1 && relative_paths && errno == ENOENT && | |
2f03f956 AT |
435 | create_directory_path(fnametmp) == 0) { |
436 | fd2 = do_open(fnametmp,O_WRONLY|O_CREAT|O_EXCL, | |
972a3619 | 437 | file->mode & INITACCESSPERMS); |
2f03f956 AT |
438 | } |
439 | if (fd2 == -1) { | |
fd0abefa | 440 | rprintf(FERROR,"cannot create %s : %s\n",fnametmp,strerror(errno)); |
2f03f956 AT |
441 | receive_data(f_in,buf,-1,NULL,file->length); |
442 | if (buf) unmap_file(buf); | |
443 | if (fd1 != -1) close(fd1); | |
444 | continue; | |
445 | } | |
446 | ||
c6b81a98 | 447 | cleanup_set(fnametmp, fname, file, buf, fd1, fd2); |
2f03f956 | 448 | |
11a5a3c7 AT |
449 | if (!am_server) { |
450 | log_transfer(file, fname); | |
451 | } | |
452 | ||
2f03f956 AT |
453 | /* recv file data */ |
454 | recv_ok = receive_data(f_in,buf,fd2,fname,file->length); | |
1b7c47cb AT |
455 | |
456 | log_recv(file, &initial_stats); | |
2f03f956 AT |
457 | |
458 | if (buf) unmap_file(buf); | |
459 | if (fd1 != -1) { | |
460 | close(fd1); | |
461 | } | |
462 | close(fd2); | |
463 | ||
464 | if (verbose > 2) | |
465 | rprintf(FINFO,"renaming %s to %s\n",fnametmp,fname); | |
466 | ||
467 | finish_transfer(fname, fnametmp, file); | |
c6b81a98 | 468 | |
2f03f956 | 469 | cleanup_disable(); |
554e0a8d | 470 | |
2f03f956 AT |
471 | if (!recv_ok) { |
472 | if (csum_length == SUM_LENGTH) { | |
473 | rprintf(FERROR,"ERROR: file corruption in %s. File changed during transfer?\n", | |
474 | fname); | |
475 | } else { | |
476 | if (verbose > 1) | |
477 | rprintf(FINFO,"redoing %s(%d)\n",fname,i); | |
478 | write_int(f_gen,i); | |
479 | } | |
480 | } | |
481 | } | |
482 | ||
57df171b AT |
483 | if (delete_after) { |
484 | if (recurse && delete_mode && !local_name && flist->count>0) { | |
485 | delete_files(flist); | |
486 | } | |
487 | } | |
488 | ||
2f03f956 AT |
489 | if (preserve_hard_links) |
490 | do_hard_links(flist); | |
491 | ||
492 | /* now we need to fix any directory permissions that were | |
493 | modified during the transfer */ | |
494 | for (i = 0; i < flist->count; i++) { | |
495 | file = flist->files[i]; | |
496 | if (!file->basename || !S_ISDIR(file->mode)) continue; | |
e78733d9 | 497 | recv_generator(local_name?local_name:f_name(file),flist,i,-1); |
2f03f956 AT |
498 | } |
499 | ||
500 | if (verbose > 2) | |
501 | rprintf(FINFO,"recv_files finished\n"); | |
502 | ||
503 | return 0; | |
504 | } | |
505 |