Commit | Line | Data |
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e327acec MP |
1 | /* -*- c-file-style: "linux" -*- |
2 | ||
3 | Copyright (C) 1996-2000 by Andrew Tridgell | |
2f03f956 AT |
4 | Copyright (C) Paul Mackerras 1996 |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | */ | |
20 | ||
21 | #include "rsync.h" | |
22 | ||
23 | extern int verbose; | |
24 | extern int recurse; | |
25 | extern int delete_mode; | |
26 | extern int remote_version; | |
27 | extern int csum_length; | |
28 | extern struct stats stats; | |
29 | extern int dry_run; | |
30 | extern int am_server; | |
31 | extern int relative_paths; | |
32 | extern int preserve_hard_links; | |
33 | extern int cvs_exclude; | |
34 | extern int io_error; | |
35 | extern char *tmpdir; | |
375a4556 | 36 | extern char *compare_dest; |
53dd3135 | 37 | extern int make_backups; |
16417f8b | 38 | extern int do_progress; |
53dd3135 | 39 | extern char *backup_suffix; |
2f03f956 | 40 | |
2f03f956 | 41 | static struct delete_list { |
6abd193f MP |
42 | DEV64_T dev; |
43 | INO64_T inode; | |
2f03f956 AT |
44 | } *delete_list; |
45 | static int dlist_len, dlist_alloc_len; | |
46 | ||
2f03f956 AT |
47 | /* yuck! This function wouldn't have been necessary if I had the sorting |
48 | algorithm right. Unfortunately fixing the sorting algorithm would introduce | |
49 | a backward incompatibility as file list indexes are sent over the link. | |
50 | */ | |
51 | static int delete_already_done(struct file_list *flist,int j) | |
52 | { | |
53 | int i; | |
54 | STRUCT_STAT st; | |
55 | ||
56 | if (link_stat(f_name(flist->files[j]), &st)) return 1; | |
57 | ||
58 | for (i=0;i<dlist_len;i++) { | |
59 | if (st.st_ino == delete_list[i].inode && | |
60 | st.st_dev == delete_list[i].dev) | |
61 | return 1; | |
62 | } | |
63 | ||
64 | return 0; | |
65 | } | |
66 | ||
67 | static void add_delete_entry(struct file_struct *file) | |
68 | { | |
69 | if (dlist_len == dlist_alloc_len) { | |
70 | dlist_alloc_len += 1024; | |
71 | delete_list = (struct delete_list *)Realloc(delete_list, sizeof(delete_list[0])*dlist_alloc_len); | |
72 | if (!delete_list) out_of_memory("add_delete_entry"); | |
73 | } | |
74 | ||
75 | delete_list[dlist_len].dev = file->dev; | |
76 | delete_list[dlist_len].inode = file->inode; | |
77 | dlist_len++; | |
78 | ||
79 | if (verbose > 3) | |
80 | rprintf(FINFO,"added %s to delete list\n", f_name(file)); | |
81 | } | |
82 | ||
83 | static void delete_one(struct file_struct *f) | |
84 | { | |
85 | if (!S_ISDIR(f->mode)) { | |
c7c11a0d | 86 | if (robust_unlink(f_name(f)) != 0) { |
4e40377a | 87 | rprintf(FERROR,"delete_one: unlink %s: %s\n",f_name(f),strerror(errno)); |
2f03f956 AT |
88 | } else if (verbose) { |
89 | rprintf(FINFO,"deleting %s\n",f_name(f)); | |
90 | } | |
91 | } else { | |
92 | if (do_rmdir(f_name(f)) != 0) { | |
93 | if (errno != ENOTEMPTY && errno != EEXIST) | |
4e40377a MP |
94 | rprintf(FERROR,"delete_one: rmdir %s: %s\n", |
95 | f_name(f), strerror(errno)); | |
2f03f956 AT |
96 | } else if (verbose) { |
97 | rprintf(FINFO,"deleting directory %s\n",f_name(f)); | |
98 | } | |
99 | } | |
100 | } | |
101 | ||
102 | ||
103 | ||
104 | ||
105 | /* this deletes any files on the receiving side that are not present | |
106 | on the sending side. For version 1.6.4 I have changed the behaviour | |
107 | to match more closely what most people seem to expect of this option */ | |
6957ae33 | 108 | void delete_files(struct file_list *flist) |
2f03f956 AT |
109 | { |
110 | struct file_list *local_file_list; | |
111 | int i, j; | |
112 | char *name; | |
cda2ae84 | 113 | extern int module_id; |
ef55c686 | 114 | extern int ignore_errors; |
0b73ca12 AT |
115 | extern int max_delete; |
116 | static int deletion_count; | |
2f03f956 AT |
117 | |
118 | if (cvs_exclude) | |
119 | add_cvs_excludes(); | |
120 | ||
ef55c686 | 121 | if (io_error && !(lp_ignore_errors(module_id) || ignore_errors)) { |
2f03f956 AT |
122 | rprintf(FINFO,"IO error encountered - skipping file deletion\n"); |
123 | return; | |
124 | } | |
125 | ||
126 | for (j=0;j<flist->count;j++) { | |
127 | if (!S_ISDIR(flist->files[j]->mode) || | |
128 | !(flist->files[j]->flags & FLAG_DELETE)) continue; | |
129 | ||
130 | if (remote_version < 19 && | |
131 | delete_already_done(flist, j)) continue; | |
132 | ||
133 | name = strdup(f_name(flist->files[j])); | |
134 | ||
135 | if (!(local_file_list = send_file_list(-1,1,&name))) { | |
136 | free(name); | |
137 | continue; | |
138 | } | |
139 | ||
140 | if (verbose > 1) | |
141 | rprintf(FINFO,"deleting in %s\n", name); | |
142 | ||
143 | for (i=local_file_list->count-1;i>=0;i--) { | |
0b73ca12 | 144 | if (max_delete && deletion_count > max_delete) break; |
2f03f956 AT |
145 | if (!local_file_list->files[i]->basename) continue; |
146 | if (remote_version < 19 && | |
147 | S_ISDIR(local_file_list->files[i]->mode)) | |
148 | add_delete_entry(local_file_list->files[i]); | |
149 | if (-1 == flist_find(flist,local_file_list->files[i])) { | |
53dd3135 DD |
150 | char *f = f_name(local_file_list->files[i]); |
151 | int k = strlen(f) - strlen(backup_suffix); | |
66203a98 | 152 | /* Hi Andrew, do we really need to play with backup_suffix here? */ |
53dd3135 DD |
153 | if (make_backups && ((k <= 0) || |
154 | (strcmp(f+k,backup_suffix) != 0))) { | |
155 | (void) make_backup(f); | |
156 | } else { | |
0b73ca12 | 157 | deletion_count++; |
53dd3135 DD |
158 | delete_one(local_file_list->files[i]); |
159 | } | |
160 | } | |
2f03f956 AT |
161 | } |
162 | flist_free(local_file_list); | |
163 | free(name); | |
164 | } | |
165 | } | |
166 | ||
167 | ||
52d3e106 S |
168 | /* |
169 | * get_tmpname() - create a tmp filename for a given filename | |
170 | * | |
171 | * If a tmpdir is defined, use that as the directory to | |
172 | * put it in. Otherwise, the tmp filename is in the same | |
173 | * directory as the given name. Note that there may be no | |
174 | * directory at all in the given name! | |
175 | * | |
176 | * The tmp filename is basically the given filename with a | |
177 | * dot prepended, and .XXXXXX appended (for mkstemp() to | |
178 | * put its unique gunk in). Take care to not exceed | |
179 | * either the MAXPATHLEN or NAME_MAX, esp. the last, as | |
180 | * the basename basically becomes 8 chars longer. In that | |
181 | * case, the original name is shortened sufficiently to | |
182 | * make it all fit. | |
183 | * | |
184 | * Of course, there's no real reason for the tmp name to | |
185 | * look like the original, except to satisfy us humans. | |
186 | * As long as it's unique, rsync will work. | |
187 | */ | |
188 | ||
2f03f956 AT |
189 | static int get_tmpname(char *fnametmp, char *fname) |
190 | { | |
191 | char *f; | |
52d3e106 S |
192 | int length = 0; |
193 | int maxname; | |
2f03f956 | 194 | |
2f03f956 | 195 | if (tmpdir) { |
52d3e106 S |
196 | strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2); |
197 | length = strlen(fnametmp); | |
198 | fnametmp[length++] = '/'; | |
199 | fnametmp[length] = '\0'; /* always NULL terminated */ | |
2f03f956 | 200 | } |
52d3e106 S |
201 | |
202 | if ((f = strrchr(fname, '/'))) { /* extra () for gcc */ | |
203 | ++f; | |
204 | if (!tmpdir) { | |
205 | length = f - fname; | |
206 | strlcpy(fnametmp, fname, length + 1); | |
207 | } /* copy up to and including the slash */ | |
208 | } else { | |
209 | f = fname; | |
2f03f956 | 210 | } |
52d3e106 S |
211 | fnametmp[length++] = '.'; |
212 | fnametmp[length] = '\0'; /* always NULL terminated */ | |
2f03f956 | 213 | |
52d3e106 | 214 | maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8); |
2f03f956 | 215 | |
52d3e106 S |
216 | if (maxname < 1) |
217 | { | |
218 | rprintf(FERROR, "temporary filename too long: %s\n", fname); | |
219 | fnametmp[0] = '\0'; | |
2f03f956 AT |
220 | return 0; |
221 | } | |
222 | ||
52d3e106 S |
223 | strlcpy(fnametmp + length, f, maxname); |
224 | strcat(fnametmp + length, ".XXXXXX"); | |
2f03f956 AT |
225 | |
226 | return 1; | |
227 | } | |
228 | ||
229 | ||
230 | static int receive_data(int f_in,struct map_struct *buf,int fd,char *fname, | |
231 | OFF_T total_size) | |
232 | { | |
9dd891bb | 233 | int i; |
fc0257c9 S |
234 | struct sum_struct sum; |
235 | unsigned int len; | |
2f03f956 AT |
236 | OFF_T offset = 0; |
237 | OFF_T offset2; | |
238 | char *data; | |
239 | static char file_sum1[MD4_SUM_LENGTH]; | |
240 | static char file_sum2[MD4_SUM_LENGTH]; | |
241 | char *map=NULL; | |
242 | ||
fc0257c9 | 243 | read_sum_head(f_in, &sum); |
2f03f956 AT |
244 | |
245 | sum_init(); | |
246 | ||
247 | for (i=recv_token(f_in,&data); i != 0; i=recv_token(f_in,&data)) { | |
16417f8b WD |
248 | if (do_progress) |
249 | show_progress(offset, total_size); | |
2f03f956 AT |
250 | |
251 | if (i > 0) { | |
252 | extern int cleanup_got_literal; | |
253 | ||
254 | if (verbose > 3) { | |
5f808dfb AT |
255 | rprintf(FINFO,"data recv %d at %.0f\n", |
256 | i,(double)offset); | |
2f03f956 AT |
257 | } |
258 | ||
259 | stats.literal_data += i; | |
260 | cleanup_got_literal = 1; | |
261 | ||
262 | sum_update(data,i); | |
263 | ||
264 | if (fd != -1 && write_file(fd,data,i) != i) { | |
265 | rprintf(FERROR,"write failed on %s : %s\n",fname,strerror(errno)); | |
65417579 | 266 | exit_cleanup(RERR_FILEIO); |
2f03f956 AT |
267 | } |
268 | offset += i; | |
269 | continue; | |
270 | } | |
271 | ||
272 | i = -(i+1); | |
fc0257c9 S |
273 | offset2 = i*(OFF_T)sum.blength; |
274 | len = sum.blength; | |
275 | if (i == (int) sum.count-1 && sum.remainder != 0) | |
276 | len = sum.remainder; | |
2f03f956 AT |
277 | |
278 | stats.matched_data += len; | |
279 | ||
280 | if (verbose > 3) | |
5f808dfb AT |
281 | rprintf(FINFO,"chunk[%d] of size %d at %.0f offset=%.0f\n", |
282 | i,len,(double)offset2,(double)offset); | |
2f03f956 | 283 | |
c55f7021 AT |
284 | if (buf) { |
285 | map = map_ptr(buf,offset2,len); | |
2f03f956 | 286 | |
c55f7021 AT |
287 | see_token(map, len); |
288 | sum_update(map,len); | |
289 | } | |
2f03f956 | 290 | |
a261989c | 291 | if (fd != -1 && write_file(fd,map,len) != (int) len) { |
2f03f956 AT |
292 | rprintf(FERROR,"write failed on %s : %s\n", |
293 | fname,strerror(errno)); | |
65417579 | 294 | exit_cleanup(RERR_FILEIO); |
2f03f956 AT |
295 | } |
296 | offset += len; | |
297 | } | |
298 | ||
16417f8b WD |
299 | if (do_progress) |
300 | end_progress(total_size); | |
2f03f956 AT |
301 | |
302 | if (fd != -1 && offset > 0 && sparse_end(fd) != 0) { | |
303 | rprintf(FERROR,"write failed on %s : %s\n", | |
304 | fname,strerror(errno)); | |
65417579 | 305 | exit_cleanup(RERR_FILEIO); |
2f03f956 AT |
306 | } |
307 | ||
308 | sum_end(file_sum1); | |
309 | ||
bc63ae3f S |
310 | read_buf(f_in,file_sum2,MD4_SUM_LENGTH); |
311 | if (verbose > 2) { | |
312 | rprintf(FINFO,"got file_sum\n"); | |
313 | } | |
314 | if (fd != -1 | |
315 | && memcmp(file_sum1,file_sum2,MD4_SUM_LENGTH) != 0) { | |
316 | return 0; | |
2f03f956 AT |
317 | } |
318 | return 1; | |
319 | } | |
320 | ||
321 | ||
b35d0d8e MP |
322 | /** |
323 | * main routine for receiver process. | |
324 | * | |
325 | * Receiver process runs on the same host as the generator process. */ | |
2f03f956 AT |
326 | int recv_files(int f_in,struct file_list *flist,char *local_name,int f_gen) |
327 | { | |
328 | int fd1,fd2; | |
329 | STRUCT_STAT st; | |
330 | char *fname; | |
f62c17e3 | 331 | char template[MAXPATHLEN]; |
2f03f956 | 332 | char fnametmp[MAXPATHLEN]; |
375a4556 DD |
333 | char *fnamecmp; |
334 | char fnamecmpbuf[MAXPATHLEN]; | |
2f03f956 AT |
335 | struct map_struct *buf; |
336 | int i; | |
337 | struct file_struct *file; | |
338 | int phase=0; | |
339 | int recv_ok; | |
1b7c47cb | 340 | extern struct stats stats; |
4df9f368 | 341 | extern int preserve_perms; |
57df171b | 342 | extern int delete_after; |
b35d0d8e | 343 | extern int orig_umask; |
1b7c47cb | 344 | struct stats initial_stats; |
11a5a3c7 | 345 | |
2f03f956 AT |
346 | if (verbose > 2) { |
347 | rprintf(FINFO,"recv_files(%d) starting\n",flist->count); | |
348 | } | |
349 | ||
2f03f956 AT |
350 | while (1) { |
351 | cleanup_disable(); | |
352 | ||
353 | i = read_int(f_in); | |
354 | if (i == -1) { | |
bc63ae3f | 355 | if (phase==0) { |
2f03f956 AT |
356 | phase++; |
357 | csum_length = SUM_LENGTH; | |
358 | if (verbose > 2) | |
359 | rprintf(FINFO,"recv_files phase=%d\n",phase); | |
360 | write_int(f_gen,-1); | |
361 | continue; | |
362 | } | |
363 | break; | |
364 | } | |
365 | ||
366 | if (i < 0 || i >= flist->count) { | |
367 | rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n", | |
368 | i, flist->count); | |
65417579 | 369 | exit_cleanup(RERR_PROTOCOL); |
2f03f956 AT |
370 | } |
371 | ||
372 | file = flist->files[i]; | |
373 | fname = f_name(file); | |
374 | ||
375 | stats.num_transferred_files++; | |
376 | stats.total_transferred_size += file->length; | |
377 | ||
378 | if (local_name) | |
379 | fname = local_name; | |
380 | ||
381 | if (dry_run) { | |
42d4edc0 S |
382 | if (!am_server && verbose) { /* log transfer */ |
383 | rprintf(FINFO, "%s\n", fname); | |
11a5a3c7 | 384 | } |
2f03f956 AT |
385 | continue; |
386 | } | |
387 | ||
1b7c47cb AT |
388 | initial_stats = stats; |
389 | ||
2f03f956 AT |
390 | if (verbose > 2) |
391 | rprintf(FINFO,"recv_files(%s)\n",fname); | |
392 | ||
375a4556 DD |
393 | fnamecmp = fname; |
394 | ||
2f03f956 | 395 | /* open the file */ |
8c9fd200 | 396 | fd1 = do_open(fnamecmp, O_RDONLY, 0); |
375a4556 DD |
397 | |
398 | if ((fd1 == -1) && (compare_dest != NULL)) { | |
399 | /* try the file at compare_dest instead */ | |
8950ac03 | 400 | snprintf(fnamecmpbuf,MAXPATHLEN,"%s/%s", |
375a4556 DD |
401 | compare_dest,fname); |
402 | fnamecmp = fnamecmpbuf; | |
8c9fd200 | 403 | fd1 = do_open(fnamecmp, O_RDONLY, 0); |
375a4556 | 404 | } |
2f03f956 AT |
405 | |
406 | if (fd1 != -1 && do_fstat(fd1,&st) != 0) { | |
375a4556 | 407 | rprintf(FERROR,"fstat %s : %s\n",fnamecmp,strerror(errno)); |
2f03f956 AT |
408 | receive_data(f_in,NULL,-1,NULL,file->length); |
409 | close(fd1); | |
410 | continue; | |
411 | } | |
412 | ||
413 | if (fd1 != -1 && !S_ISREG(st.st_mode)) { | |
375a4556 | 414 | rprintf(FERROR,"%s : not a regular file (recv_files)\n",fnamecmp); |
2f03f956 AT |
415 | receive_data(f_in,NULL,-1,NULL,file->length); |
416 | close(fd1); | |
417 | continue; | |
418 | } | |
419 | ||
4df9f368 | 420 | if (fd1 != -1 && !preserve_perms) { |
85ed0aa3 S |
421 | /* if the file exists already and we aren't preserving |
422 | permissions then act as though the remote end sent | |
4df9f368 AT |
423 | us the file permissions we already have */ |
424 | file->mode = st.st_mode; | |
425 | } | |
426 | ||
2f03f956 AT |
427 | if (fd1 != -1 && st.st_size > 0) { |
428 | buf = map_file(fd1,st.st_size); | |
429 | if (verbose > 2) | |
5f808dfb | 430 | rprintf(FINFO,"recv mapped %s of size %.0f\n",fnamecmp,(double)st.st_size); |
2f03f956 AT |
431 | } else { |
432 | buf = NULL; | |
433 | } | |
434 | ||
435 | if (!get_tmpname(fnametmp,fname)) { | |
436 | if (buf) unmap_file(buf); | |
437 | if (fd1 != -1) close(fd1); | |
438 | continue; | |
439 | } | |
440 | ||
f62c17e3 | 441 | strlcpy(template, fnametmp, sizeof(template)); |
2f03f956 AT |
442 | |
443 | /* we initially set the perms without the | |
444 | setuid/setgid bits to ensure that there is no race | |
445 | condition. They are then correctly updated after | |
446 | the lchown. Thanks to snabb@epipe.fi for pointing | |
972a3619 DD |
447 | this out. We also set it initially without group |
448 | access because of a similar race condition. */ | |
f62c17e3 | 449 | fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS); |
2f03f956 | 450 | |
752eaba4 DD |
451 | /* in most cases parent directories will already exist |
452 | because their information should have been previously | |
453 | transferred, but that may not be the case with -R */ | |
454 | if (fd2 == -1 && relative_paths && errno == ENOENT && | |
b35d0d8e | 455 | create_directory_path(fnametmp, orig_umask) == 0) { |
f62c17e3 AT |
456 | strlcpy(fnametmp, template, sizeof(fnametmp)); |
457 | fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS); | |
2f03f956 AT |
458 | } |
459 | if (fd2 == -1) { | |
1b3cadaa | 460 | rprintf(FERROR,"mkstemp %s failed: %s\n",fnametmp,strerror(errno)); |
2f03f956 AT |
461 | receive_data(f_in,buf,-1,NULL,file->length); |
462 | if (buf) unmap_file(buf); | |
463 | if (fd1 != -1) close(fd1); | |
464 | continue; | |
465 | } | |
466 | ||
c6b81a98 | 467 | cleanup_set(fnametmp, fname, file, buf, fd1, fd2); |
2f03f956 | 468 | |
42d4edc0 S |
469 | if (!am_server && verbose) { /* log transfer */ |
470 | rprintf(FINFO, "%s\n", fname); | |
11a5a3c7 AT |
471 | } |
472 | ||
2f03f956 AT |
473 | /* recv file data */ |
474 | recv_ok = receive_data(f_in,buf,fd2,fname,file->length); | |
1b7c47cb AT |
475 | |
476 | log_recv(file, &initial_stats); | |
2f03f956 AT |
477 | |
478 | if (buf) unmap_file(buf); | |
479 | if (fd1 != -1) { | |
480 | close(fd1); | |
481 | } | |
482 | close(fd2); | |
483 | ||
484 | if (verbose > 2) | |
485 | rprintf(FINFO,"renaming %s to %s\n",fnametmp,fname); | |
486 | ||
487 | finish_transfer(fname, fnametmp, file); | |
c6b81a98 | 488 | |
2f03f956 | 489 | cleanup_disable(); |
554e0a8d | 490 | |
2f03f956 AT |
491 | if (!recv_ok) { |
492 | if (csum_length == SUM_LENGTH) { | |
493 | rprintf(FERROR,"ERROR: file corruption in %s. File changed during transfer?\n", | |
494 | fname); | |
495 | } else { | |
496 | if (verbose > 1) | |
497 | rprintf(FINFO,"redoing %s(%d)\n",fname,i); | |
498 | write_int(f_gen,i); | |
499 | } | |
500 | } | |
501 | } | |
502 | ||
57df171b AT |
503 | if (delete_after) { |
504 | if (recurse && delete_mode && !local_name && flist->count>0) { | |
505 | delete_files(flist); | |
506 | } | |
507 | } | |
508 | ||
2f03f956 | 509 | if (preserve_hard_links) |
fae5bb31 | 510 | do_hard_links(); |
2f03f956 AT |
511 | |
512 | /* now we need to fix any directory permissions that were | |
513 | modified during the transfer */ | |
514 | for (i = 0; i < flist->count; i++) { | |
515 | file = flist->files[i]; | |
516 | if (!file->basename || !S_ISDIR(file->mode)) continue; | |
e78733d9 | 517 | recv_generator(local_name?local_name:f_name(file),flist,i,-1); |
2f03f956 AT |
518 | } |
519 | ||
520 | if (verbose > 2) | |
521 | rprintf(FINFO,"recv_files finished\n"); | |
522 | ||
523 | return 0; | |
524 | } | |
525 |