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Improve --timeout method to take into account all socket I/O that is
[rsync/qnx.git] / generator.c
blob7e32fe1fe5ea96fa686ccb4387594df6e45eeb45
1 /*
2 * Routines that are exclusive to the generator process.
3 *
4 * Copyright (C) 1996-2000 Andrew Tridgell
5 * Copyright (C) 1996 Paul Mackerras
6 * Copyright (C) 2002 Martin Pool <mbp@samba.org>
7 * Copyright (C) 2003-2009 Wayne Davison
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, visit the http://fsf.org website.
21 */
22
23 #include "rsync.h"
24
25 extern int verbose;
26 extern int dry_run;
27 extern int do_xfers;
28 extern int stdout_format_has_i;
29 extern int logfile_format_has_i;
30 extern int am_root;
31 extern int am_server;
32 extern int am_daemon;
33 extern int inc_recurse;
34 extern int do_progress;
35 extern int relative_paths;
36 extern int implied_dirs;
37 extern int keep_dirlinks;
38 extern int preserve_acls;
39 extern int preserve_xattrs;
40 extern int preserve_links;
41 extern int preserve_devices;
42 extern int preserve_specials;
43 extern int preserve_hard_links;
44 extern int preserve_executability;
45 extern int preserve_perms;
46 extern int preserve_times;
47 extern int uid_ndx;
48 extern int gid_ndx;
49 extern int delete_mode;
50 extern int delete_before;
51 extern int delete_during;
52 extern int delete_after;
53 extern int msgdone_cnt;
54 extern int ignore_errors;
55 extern int remove_source_files;
56 extern int delay_updates;
57 extern int update_only;
58 extern int ignore_existing;
59 extern int ignore_non_existing;
60 extern int inplace;
61 extern int append_mode;
62 extern int make_backups;
63 extern int csum_length;
64 extern int ignore_times;
65 extern int size_only;
66 extern OFF_T max_size;
67 extern OFF_T min_size;
68 extern int io_error;
69 extern int flist_eof;
70 extern int allowed_lull;
71 extern int sock_f_out;
72 extern int protocol_version;
73 extern int file_total;
74 extern int fuzzy_basis;
75 extern int always_checksum;
76 extern int checksum_len;
77 extern char *partial_dir;
78 extern char *basis_dir[];
79 extern int compare_dest;
80 extern int copy_dest;
81 extern int link_dest;
82 extern int whole_file;
83 extern int list_only;
84 extern int read_batch;
85 extern int safe_symlinks;
86 extern long block_size; /* "long" because popt can't set an int32. */
87 extern int unsort_ndx;
88 extern int max_delete;
89 extern int force_delete;
90 extern int one_file_system;
91 extern struct stats stats;
92 extern dev_t filesystem_dev;
93 extern mode_t orig_umask;
94 extern uid_t our_uid;
95 extern char *backup_dir;
96 extern char *backup_suffix;
97 extern int backup_suffix_len;
98 extern struct file_list *cur_flist, *first_flist, *dir_flist;
99 extern struct filter_list_struct daemon_filter_list;
100
101 int ignore_perishable = 0;
102 int non_perishable_cnt = 0;
103 int maybe_ATTRS_REPORT = 0;
104
105 static dev_t dev_zero;
106 static int deletion_count = 0; /* used to implement --max-delete */
107 static int deldelay_size = 0, deldelay_cnt = 0;
108 static char *deldelay_buf = NULL;
109 static int deldelay_fd = -1;
110 static int loopchk_limit;
111 static int dir_tweaking;
112 static int symlink_timeset_failed_flags;
113 static int need_retouch_dir_times;
114 static int need_retouch_dir_perms;
115 static const char *solo_file = NULL;
116
117 /* For calling delete_item() and delete_dir_contents(). */
118 #define DEL_NO_UID_WRITE (1<<0) /* file/dir has our uid w/o write perm */
119 #define DEL_RECURSE (1<<1) /* if dir, delete all contents */
120 #define DEL_DIR_IS_EMPTY (1<<2) /* internal delete_FUNCTIONS use only */
121 #define DEL_FOR_FILE (1<<3) /* making room for a replacement file */
122 #define DEL_FOR_DIR (1<<4) /* making room for a replacement dir */
123 #define DEL_FOR_SYMLINK (1<<5) /* making room for a replacement symlink */
124 #define DEL_FOR_DEVICE (1<<6) /* making room for a replacement device */
125 #define DEL_FOR_SPECIAL (1<<7) /* making room for a replacement special */
126
127 #define DEL_MAKE_ROOM (DEL_FOR_FILE|DEL_FOR_DIR|DEL_FOR_SYMLINK|DEL_FOR_DEVICE|DEL_FOR_SPECIAL)
128
129 enum nonregtype {
130 TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
131 };
132
133 enum delret {
134 DR_SUCCESS = 0, DR_FAILURE, DR_AT_LIMIT, DR_NOT_EMPTY
135 };
136
137 /* Forward declarations. */
138 static enum delret delete_dir_contents(char *fname, uint16 flags);
139 #ifdef SUPPORT_HARD_LINKS
140 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
141 enum logcode code, int f_out);
142 #endif
143
144 static int is_backup_file(char *fn)
145 {
146 int k = strlen(fn) - backup_suffix_len;
147 return k > 0 && strcmp(fn+k, backup_suffix) == 0;
148 }
149
150 /* Delete a file or directory. If DEL_RECURSE is set in the flags, this will
151 * delete recursively.
152 *
153 * Note that fbuf must point to a MAXPATHLEN buffer if the mode indicates it's
154 * a directory! (The buffer is used for recursion, but returned unchanged.)
155 */
156 static enum delret delete_item(char *fbuf, uint16 mode, uint16 flags)
157 {
158 enum delret ret;
159 char *what;
160 int ok;
161
162 if (verbose > 2) {
163 rprintf(FINFO, "delete_item(%s) mode=%o flags=%d\n",
164 fbuf, (int)mode, (int)flags);
165 }
166
167 if (flags & DEL_NO_UID_WRITE)
168 do_chmod(fbuf, mode | S_IWUSR);
169
170 if (S_ISDIR(mode) && !(flags & DEL_DIR_IS_EMPTY)) {
171 int save_uid_ndx = uid_ndx;
172 /* This only happens on the first call to delete_item() since
173 * delete_dir_contents() always calls us w/DEL_DIR_IS_EMPTY. */
174 if (!uid_ndx)
175 uid_ndx = ++file_extra_cnt;
176 ignore_perishable = 1;
177 /* If DEL_RECURSE is not set, this just reports emptiness. */
178 ret = delete_dir_contents(fbuf, flags);
179 ignore_perishable = 0;
180 if (!save_uid_ndx) {
181 --file_extra_cnt;
182 uid_ndx = 0;
183 }
184 if (ret == DR_NOT_EMPTY || ret == DR_AT_LIMIT)
185 goto check_ret;
186 /* OK: try to delete the directory. */
187 }
188
189 if (!(flags & DEL_MAKE_ROOM) && max_delete >= 0 && ++deletion_count > max_delete)
190 return DR_AT_LIMIT;
191
192 if (S_ISDIR(mode)) {
193 what = "rmdir";
194 ok = do_rmdir(fbuf) == 0;
195 } else if (make_backups > 0 && (backup_dir || !is_backup_file(fbuf))) {
196 what = "make_backup";
197 ok = make_backup(fbuf);
198 } else {
199 what = "unlink";
200 ok = robust_unlink(fbuf) == 0;
201 }
202
203 if (ok) {
204 if (!(flags & DEL_MAKE_ROOM))
205 log_delete(fbuf, mode);
206 ret = DR_SUCCESS;
207 } else {
208 if (S_ISDIR(mode) && errno == ENOTEMPTY) {
209 rprintf(FINFO, "cannot delete non-empty directory: %s\n",
210 fbuf);
211 ret = DR_NOT_EMPTY;
212 } else if (errno != ENOENT) {
213 rsyserr(FERROR, errno, "delete_file: %s(%s) failed",
214 what, fbuf);
215 ret = DR_FAILURE;
216 } else {
217 deletion_count--;
218 ret = DR_SUCCESS;
219 }
220 }
221
222 check_ret:
223 if (ret != DR_SUCCESS && flags & DEL_MAKE_ROOM) {
224 const char *desc;
225 switch (flags & DEL_MAKE_ROOM) {
226 case DEL_FOR_FILE: desc = "regular file"; break;
227 case DEL_FOR_DIR: desc = "directory"; break;
228 case DEL_FOR_SYMLINK: desc = "symlink"; break;
229 case DEL_FOR_DEVICE: desc = "device file"; break;
230 case DEL_FOR_SPECIAL: desc = "special file"; break;
231 default: exit_cleanup(RERR_UNSUPPORTED); /* IMPOSSIBLE */
232 }
233 rprintf(FERROR_XFER, "could not make way for new %s: %s\n",
234 desc, fbuf);
235 }
236 return ret;
237 }
238
239 /* The directory is about to be deleted: if DEL_RECURSE is given, delete all
240 * its contents, otherwise just checks for content. Returns DR_SUCCESS or
241 * DR_NOT_EMPTY. Note that fname must point to a MAXPATHLEN buffer! (The
242 * buffer is used for recursion, but returned unchanged.)
243 */
244 static enum delret delete_dir_contents(char *fname, uint16 flags)
245 {
246 struct file_list *dirlist;
247 enum delret ret;
248 unsigned remainder;
249 void *save_filters;
250 int j, dlen;
251 char *p;
252
253 if (verbose > 3) {
254 rprintf(FINFO, "delete_dir_contents(%s) flags=%d\n",
255 fname, flags);
256 }
257
258 dlen = strlen(fname);
259 save_filters = push_local_filters(fname, dlen);
260
261 non_perishable_cnt = 0;
262 dirlist = get_dirlist(fname, dlen, 0);
263 ret = non_perishable_cnt ? DR_NOT_EMPTY : DR_SUCCESS;
264
265 if (!dirlist->used)
266 goto done;
267
268 if (!(flags & DEL_RECURSE)) {
269 ret = DR_NOT_EMPTY;
270 goto done;
271 }
272
273 p = fname + dlen;
274 if (dlen != 1 || *fname != '/')
275 *p++ = '/';
276 remainder = MAXPATHLEN - (p - fname);
277
278 /* We do our own recursion, so make delete_item() non-recursive. */
279 flags = (flags & ~(DEL_RECURSE|DEL_MAKE_ROOM|DEL_NO_UID_WRITE))
280 | DEL_DIR_IS_EMPTY;
281
282 for (j = dirlist->used; j--; ) {
283 struct file_struct *fp = dirlist->files[j];
284
285 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
286 if (verbose > 1) {
287 rprintf(FINFO,
288 "mount point, %s, pins parent directory\n",
289 f_name(fp, NULL));
290 }
291 ret = DR_NOT_EMPTY;
292 continue;
293 }
294
295 strlcpy(p, fp->basename, remainder);
296 if (!(fp->mode & S_IWUSR) && !am_root && (uid_t)F_OWNER(fp) == our_uid)
297 do_chmod(fname, fp->mode | S_IWUSR);
298 /* Save stack by recursing to ourself directly. */
299 if (S_ISDIR(fp->mode)) {
300 if (delete_dir_contents(fname, flags | DEL_RECURSE) != DR_SUCCESS)
301 ret = DR_NOT_EMPTY;
302 }
303 if (delete_item(fname, fp->mode, flags) != DR_SUCCESS)
304 ret = DR_NOT_EMPTY;
305 }
306
307 fname[dlen] = '\0';
308
309 done:
310 flist_free(dirlist);
311 pop_local_filters(save_filters);
312
313 if (ret == DR_NOT_EMPTY) {
314 rprintf(FINFO, "cannot delete non-empty directory: %s\n",
315 fname);
316 }
317 return ret;
318 }
319
320 static int start_delete_delay_temp(void)
321 {
322 char fnametmp[MAXPATHLEN];
323 int save_dry_run = dry_run;
324
325 dry_run = 0;
326 if (!get_tmpname(fnametmp, "deldelay")
327 || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
328 rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
329 inc_recurse ? "" : " -- switching to --delete-after");
330 delete_during = 0;
331 delete_after = !inc_recurse;
332 dry_run = save_dry_run;
333 return 0;
334 }
335 unlink(fnametmp);
336 dry_run = save_dry_run;
337 return 1;
338 }
339
340 static int flush_delete_delay(void)
341 {
342 if (deldelay_fd < 0 && !start_delete_delay_temp())
343 return 0;
344 if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
345 rsyserr(FERROR, errno, "flush of delete-delay buffer");
346 delete_during = 0;
347 delete_after = !inc_recurse;
348 close(deldelay_fd);
349 return 0;
350 }
351 deldelay_cnt = 0;
352 return 1;
353 }
354
355 static int remember_delete(struct file_struct *file, const char *fname, int flags)
356 {
357 int len;
358
359 if (deldelay_cnt == deldelay_size && !flush_delete_delay())
360 return 0;
361
362 if (flags & DEL_NO_UID_WRITE)
363 deldelay_buf[deldelay_cnt++] = '!';
364
365 while (1) {
366 len = snprintf(deldelay_buf + deldelay_cnt,
367 deldelay_size - deldelay_cnt,
368 "%x %s%c",
369 (int)file->mode, fname, '\0');
370 if ((deldelay_cnt += len) <= deldelay_size)
371 break;
372 deldelay_cnt -= len;
373 if (!flush_delete_delay())
374 return 0;
375 }
376
377 return 1;
378 }
379
380 static int read_delay_line(char *buf, int *flags_p)
381 {
382 static int read_pos = 0;
383 int j, len, mode;
384 char *bp, *past_space;
385
386 while (1) {
387 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
388 if (j < deldelay_cnt)
389 break;
390 if (deldelay_fd < 0) {
391 if (j > read_pos)
392 goto invalid_data;
393 return -1;
394 }
395 deldelay_cnt -= read_pos;
396 if (deldelay_cnt == deldelay_size)
397 goto invalid_data;
398 if (deldelay_cnt && read_pos) {
399 memmove(deldelay_buf, deldelay_buf + read_pos,
400 deldelay_cnt);
401 }
402 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
403 deldelay_size - deldelay_cnt);
404 if (len == 0) {
405 if (deldelay_cnt) {
406 rprintf(FERROR,
407 "ERROR: unexpected EOF in delete-delay file.\n");
408 }
409 return -1;
410 }
411 if (len < 0) {
412 rsyserr(FERROR, errno,
413 "reading delete-delay file");
414 return -1;
415 }
416 deldelay_cnt += len;
417 read_pos = 0;
418 }
419
420 bp = deldelay_buf + read_pos;
421 if (*bp == '!') {
422 bp++;
423 *flags_p = DEL_NO_UID_WRITE;
424 } else
425 *flags_p = 0;
426
427 if (sscanf(bp, "%x ", &mode) != 1) {
428 invalid_data:
429 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
430 return -1;
431 }
432 past_space = strchr(bp, ' ') + 1;
433 len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
434 read_pos = j + 1;
435
436 if (len > MAXPATHLEN) {
437 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
438 return -1;
439 }
440
441 /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
442 * instead of returning a pointer to our buffer. */
443 memcpy(buf, past_space, len);
444
445 return mode;
446 }
447
448 static void do_delayed_deletions(char *delbuf)
449 {
450 int mode, flags;
451
452 if (deldelay_fd >= 0) {
453 if (deldelay_cnt && !flush_delete_delay())
454 return;
455 lseek(deldelay_fd, 0, 0);
456 }
457 while ((mode = read_delay_line(delbuf, &flags)) >= 0)
458 delete_item(delbuf, mode, flags | DEL_RECURSE);
459 if (deldelay_fd >= 0)
460 close(deldelay_fd);
461 }
462
463 /* This function is used to implement per-directory deletion, and is used by
464 * all the --delete-WHEN options. Note that the fbuf pointer must point to a
465 * MAXPATHLEN buffer with the name of the directory in it (the functions we
466 * call will append names onto the end, but the old dir value will be restored
467 * on exit). */
468 static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
469 {
470 static int already_warned = 0;
471 struct file_list *dirlist;
472 char delbuf[MAXPATHLEN];
473 int dlen, i;
474 int save_uid_ndx = uid_ndx;
475
476 if (!fbuf) {
477 change_local_filter_dir(NULL, 0, 0);
478 return;
479 }
480
481 if (verbose > 2)
482 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
483
484 if (allowed_lull)
485 maybe_send_keepalive();
486
487 if (io_error && !ignore_errors) {
488 if (already_warned)
489 return;
490 rprintf(FINFO,
491 "IO error encountered -- skipping file deletion\n");
492 already_warned = 1;
493 return;
494 }
495
496 dlen = strlen(fbuf);
497 change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
498
499 if (one_file_system) {
500 if (file->flags & FLAG_TOP_DIR)
501 filesystem_dev = *fs_dev;
502 else if (filesystem_dev != *fs_dev)
503 return;
504 }
505
506 if (!uid_ndx)
507 uid_ndx = ++file_extra_cnt;
508
509 dirlist = get_dirlist(fbuf, dlen, 0);
510
511 /* If an item in dirlist is not found in flist, delete it
512 * from the filesystem. */
513 for (i = dirlist->used; i--; ) {
514 struct file_struct *fp = dirlist->files[i];
515 if (!F_IS_ACTIVE(fp))
516 continue;
517 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
518 if (verbose > 1)
519 rprintf(FINFO, "cannot delete mount point: %s\n",
520 f_name(fp, NULL));
521 continue;
522 }
523 /* Here we want to match regardless of file type. Replacement
524 * of a file with one of another type is handled separately by
525 * a delete_item call with a DEL_MAKE_ROOM flag. */
526 if (flist_find_ignore_dirness(cur_flist, fp) < 0) {
527 int flags = DEL_RECURSE;
528 if (!(fp->mode & S_IWUSR) && !am_root && (uid_t)F_OWNER(fp) == our_uid)
529 flags |= DEL_NO_UID_WRITE;
530 f_name(fp, delbuf);
531 if (delete_during == 2) {
532 if (!remember_delete(fp, delbuf, flags))
533 break;
534 } else
535 delete_item(delbuf, fp->mode, flags);
536 }
537 }
538
539 flist_free(dirlist);
540
541 if (!save_uid_ndx) {
542 --file_extra_cnt;
543 uid_ndx = 0;
544 }
545 }
546
547 /* This deletes any files on the receiving side that are not present on the
548 * sending side. This is used by --delete-before and --delete-after. */
549 static void do_delete_pass(void)
550 {
551 char fbuf[MAXPATHLEN];
552 STRUCT_STAT st;
553 int j;
554
555 /* dry_run is incremented when the destination doesn't exist yet. */
556 if (dry_run > 1 || list_only)
557 return;
558
559 for (j = 0; j < cur_flist->used; j++) {
560 struct file_struct *file = cur_flist->sorted[j];
561
562 f_name(file, fbuf);
563
564 if (!(file->flags & FLAG_CONTENT_DIR)) {
565 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
566 continue;
567 }
568
569 if (verbose > 1 && file->flags & FLAG_TOP_DIR)
570 rprintf(FINFO, "deleting in %s\n", fbuf);
571
572 if (link_stat(fbuf, &st, keep_dirlinks) < 0
573 || !S_ISDIR(st.st_mode))
574 continue;
575
576 delete_in_dir(fbuf, file, &st.st_dev);
577 }
578 delete_in_dir(NULL, NULL, &dev_zero);
579
580 if (do_progress && !am_server)
581 rprintf(FINFO, " \r");
582 }
583
584 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
585 {
586 #if !defined HAVE_LUTIMES || !defined HAVE_UTIMES
587 if (S_ISLNK(file->mode)) {
588 ;
589 } else
590 #endif
591 if (preserve_times && cmp_time(sxp->st.st_mtime, file->modtime) != 0)
592 return 0;
593
594 if (preserve_perms) {
595 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
596 return 0;
597 } else if (preserve_executability
598 && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
599 return 0;
600
601 if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
602 return 0;
603
604 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
605 return 0;
606
607 #ifdef SUPPORT_ACLS
608 if (preserve_acls && !S_ISLNK(file->mode)) {
609 if (!ACL_READY(*sxp))
610 get_acl(fname, sxp);
611 if (set_acl(NULL, file, sxp) == 0)
612 return 0;
613 }
614 #endif
615 #ifdef SUPPORT_XATTRS
616 if (preserve_xattrs) {
617 if (!XATTR_READY(*sxp))
618 get_xattr(fname, sxp);
619 if (xattr_diff(file, sxp, 0))
620 return 0;
621 }
622 #endif
623
624 return 1;
625 }
626
627 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
628 stat_x *sxp, int32 iflags, uchar fnamecmp_type,
629 const char *xname)
630 {
631 if (statret >= 0) { /* A from-dest-dir statret can == 1! */
632 int keep_time = !preserve_times ? 0
633 : S_ISDIR(file->mode) ? preserve_times > 1 :
634 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
635 1;
636 #else
637 !S_ISLNK(file->mode);
638 #endif
639
640 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
641 iflags |= ITEM_REPORT_SIZE;
642 if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
643 if (iflags & ITEM_LOCAL_CHANGE)
644 iflags |= symlink_timeset_failed_flags;
645 } else if (keep_time
646 ? cmp_time(file->modtime, sxp->st.st_mtime) != 0
647 : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
648 && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
649 iflags |= ITEM_REPORT_TIME;
650 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
651 if (S_ISLNK(file->mode)) {
652 ;
653 } else
654 #endif
655 if (preserve_perms) {
656 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
657 iflags |= ITEM_REPORT_PERMS;
658 } else if (preserve_executability
659 && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
660 iflags |= ITEM_REPORT_PERMS;
661 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
662 iflags |= ITEM_REPORT_OWNER;
663 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
664 && sxp->st.st_gid != (gid_t)F_GROUP(file))
665 iflags |= ITEM_REPORT_GROUP;
666 #ifdef SUPPORT_ACLS
667 if (preserve_acls && !S_ISLNK(file->mode)) {
668 if (!ACL_READY(*sxp))
669 get_acl(fnamecmp, sxp);
670 if (set_acl(NULL, file, sxp) == 0)
671 iflags |= ITEM_REPORT_ACL;
672 }
673 #endif
674 #ifdef SUPPORT_XATTRS
675 if (preserve_xattrs) {
676 if (!XATTR_READY(*sxp))
677 get_xattr(fnamecmp, sxp);
678 if (xattr_diff(file, sxp, 1))
679 iflags |= ITEM_REPORT_XATTR;
680 }
681 #endif
682 } else {
683 #ifdef SUPPORT_XATTRS
684 if (preserve_xattrs && xattr_diff(file, NULL, 1))
685 iflags |= ITEM_REPORT_XATTR;
686 #endif
687 iflags |= ITEM_IS_NEW;
688 }
689
690 iflags &= 0xffff;
691 if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || verbose > 1
692 || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
693 if (protocol_version >= 29) {
694 if (ndx >= 0)
695 write_ndx(sock_f_out, ndx);
696 write_shortint(sock_f_out, iflags);
697 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
698 write_byte(sock_f_out, fnamecmp_type);
699 if (iflags & ITEM_XNAME_FOLLOWS)
700 write_vstring(sock_f_out, xname, strlen(xname));
701 #ifdef SUPPORT_XATTRS
702 if (preserve_xattrs && do_xfers
703 && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
704 send_xattr_request(NULL, file,
705 iflags & ITEM_REPORT_XATTR ? sock_f_out : -1);
706 }
707 #endif
708 } else if (ndx >= 0) {
709 enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
710 log_item(code, file, &stats, iflags, xname);
711 }
712 }
713 }
714
715
716 /* Perform our quick-check heuristic for determining if a file is unchanged. */
717 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
718 {
719 if (st->st_size != F_LENGTH(file))
720 return 0;
721
722 /* if always checksum is set then we use the checksum instead
723 of the file time to determine whether to sync */
724 if (always_checksum > 0 && S_ISREG(st->st_mode)) {
725 char sum[MAX_DIGEST_LEN];
726 file_checksum(fn, sum, st->st_size);
727 return memcmp(sum, F_SUM(file), checksum_len) == 0;
728 }
729
730 if (size_only > 0)
731 return 1;
732
733 if (ignore_times)
734 return 0;
735
736 return cmp_time(st->st_mtime, file->modtime) == 0;
737 }
738
739
740 /*
741 * set (initialize) the size entries in the per-file sum_struct
742 * calculating dynamic block and checksum sizes.
743 *
744 * This is only called from generate_and_send_sums() but is a separate
745 * function to encapsulate the logic.
746 *
747 * The block size is a rounded square root of file length.
748 *
749 * The checksum size is determined according to:
750 * blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
751 * provided by Donovan Baarda which gives a probability of rsync
752 * algorithm corrupting data and falling back using the whole md4
753 * checksums.
754 *
755 * This might be made one of several selectable heuristics.
756 */
757 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
758 {
759 int32 blength;
760 int s2length;
761 int64 l;
762
763 if (block_size)
764 blength = block_size;
765 else if (len <= BLOCK_SIZE * BLOCK_SIZE)
766 blength = BLOCK_SIZE;
767 else {
768 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
769 int32 c;
770 int cnt;
771 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
772 if (c < 0 || c >= max_blength)
773 blength = max_blength;
774 else {
775 blength = 0;
776 do {
777 blength |= c;
778 if (len < (int64)blength * blength)
779 blength &= ~c;
780 c >>= 1;
781 } while (c >= 8); /* round to multiple of 8 */
782 blength = MAX(blength, BLOCK_SIZE);
783 }
784 }
785
786 if (protocol_version < 27) {
787 s2length = csum_length;
788 } else if (csum_length == SUM_LENGTH) {
789 s2length = SUM_LENGTH;
790 } else {
791 int32 c;
792 int b = BLOCKSUM_BIAS;
793 for (l = len; l >>= 1; b += 2) {}
794 for (c = blength; (c >>= 1) && b; b--) {}
795 /* add a bit, subtract rollsum, round up. */
796 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
797 s2length = MAX(s2length, csum_length);
798 s2length = MIN(s2length, SUM_LENGTH);
799 }
800
801 sum->flength = len;
802 sum->blength = blength;
803 sum->s2length = s2length;
804 sum->remainder = (int32)(len % blength);
805 sum->count = (int32)(l = (len / blength) + (sum->remainder != 0));
806
807 if ((int64)sum->count != l)
808 sum->count = -1;
809
810 if (sum->count && verbose > 2) {
811 rprintf(FINFO,
812 "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n",
813 (double)sum->count, (long)sum->remainder, (long)sum->blength,
814 sum->s2length, (double)sum->flength);
815 }
816 }
817
818
819 /*
820 * Generate and send a stream of signatures/checksums that describe a buffer
821 *
822 * Generate approximately one checksum every block_len bytes.
823 */
824 static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
825 {
826 int32 i;
827 struct map_struct *mapbuf;
828 struct sum_struct sum;
829 OFF_T offset = 0;
830
831 sum_sizes_sqroot(&sum, len);
832 if (sum.count < 0)
833 return -1;
834 write_sum_head(f_out, &sum);
835
836 if (append_mode > 0 && f_copy < 0)
837 return 0;
838
839 if (len > 0)
840 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
841 else
842 mapbuf = NULL;
843
844 for (i = 0; i < sum.count; i++) {
845 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
846 char *map = map_ptr(mapbuf, offset, n1);
847 char sum2[SUM_LENGTH];
848 uint32 sum1;
849
850 len -= n1;
851 offset += n1;
852
853 if (f_copy >= 0) {
854 full_write(f_copy, map, n1);
855 if (append_mode > 0)
856 continue;
857 }
858
859 sum1 = get_checksum1(map, n1);
860 get_checksum2(map, n1, sum2);
861
862 if (verbose > 3) {
863 rprintf(FINFO,
864 "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n",
865 (double)i, (double)offset - n1, (long)n1,
866 (unsigned long)sum1);
867 }
868 write_int(f_out, sum1);
869 write_buf(f_out, sum2, sum.s2length);
870 }
871
872 if (mapbuf)
873 unmap_file(mapbuf);
874
875 return 0;
876 }
877
878
879 /* Try to find a filename in the same dir as "fname" with a similar name. */
880 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
881 {
882 int fname_len, fname_suf_len;
883 const char *fname_suf, *fname = file->basename;
884 uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
885 int j, lowest_j = -1;
886
887 fname_len = strlen(fname);
888 fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
889
890 for (j = 0; j < dirlist->used; j++) {
891 struct file_struct *fp = dirlist->files[j];
892 const char *suf, *name;
893 int len, suf_len;
894 uint32 dist;
895
896 if (!S_ISREG(fp->mode) || !F_LENGTH(fp)
897 || fp->flags & FLAG_FILE_SENT)
898 continue;
899
900 name = fp->basename;
901
902 if (F_LENGTH(fp) == F_LENGTH(file)
903 && cmp_time(fp->modtime, file->modtime) == 0) {
904 if (verbose > 4) {
905 rprintf(FINFO,
906 "fuzzy size/modtime match for %s\n",
907 name);
908 }
909 return j;
910 }
911
912 len = strlen(name);
913 suf = find_filename_suffix(name, len, &suf_len);
914
915 dist = fuzzy_distance(name, len, fname, fname_len);
916 /* Add some extra weight to how well the suffixes match. */
917 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
918 * 10;
919 if (verbose > 4) {
920 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
921 name, (int)(dist>>16), (int)(dist&0xFFFF));
922 }
923 if (dist <= lowest_dist) {
924 lowest_dist = dist;
925 lowest_j = j;
926 }
927 }
928
929 return lowest_j;
930 }
931
932 /* Copy a file found in our --copy-dest handling. */
933 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
934 {
935 char buf[MAXPATHLEN];
936 const char *copy_to, *partialptr;
937 int save_preserve_xattrs = preserve_xattrs;
938 int ok, fd_w;
939
940 if (inplace) {
941 /* Let copy_file open the destination in place. */
942 fd_w = -1;
943 copy_to = dest;
944 } else {
945 fd_w = open_tmpfile(buf, dest, file);
946 if (fd_w < 0)
947 return -1;
948 copy_to = buf;
949 }
950 cleanup_set(copy_to, NULL, NULL, -1, -1);
951 if (copy_file(src, copy_to, fd_w, file->mode, 0) < 0) {
952 if (verbose) {
953 rsyserr(FINFO, errno, "copy_file %s => %s",
954 full_fname(src), copy_to);
955 }
956 /* Try to clean up. */
957 unlink(copy_to);
958 cleanup_disable();
959 return -1;
960 }
961 partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
962 preserve_xattrs = 0; /* xattrs were copied with file */
963 ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
964 preserve_xattrs = save_preserve_xattrs;
965 cleanup_disable();
966 return ok ? 0 : -1;
967 }
968
969 /* This is only called for regular files. We return -2 if we've finished
970 * handling the file, -1 if no dest-linking occurred, or a non-negative
971 * value if we found an alternate basis file. */
972 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
973 char *cmpbuf, stat_x *sxp, int itemizing,
974 enum logcode code)
975 {
976 int best_match = -1;
977 int match_level = 0;
978 int j = 0;
979
980 do {
981 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
982 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
983 continue;
984 switch (match_level) {
985 case 0:
986 best_match = j;
987 match_level = 1;
988 /* FALL THROUGH */
989 case 1:
990 if (!unchanged_file(cmpbuf, file, &sxp->st))
991 continue;
992 best_match = j;
993 match_level = 2;
994 /* FALL THROUGH */
995 case 2:
996 if (!unchanged_attrs(cmpbuf, file, sxp))
997 continue;
998 best_match = j;
999 match_level = 3;
1000 break;
1001 }
1002 break;
1003 } while (basis_dir[++j] != NULL);
1004
1005 if (!match_level)
1006 return -1;
1007
1008 if (j != best_match) {
1009 j = best_match;
1010 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1011 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1012 return -1;
1013 }
1014
1015 if (match_level == 3 && !copy_dest) {
1016 #ifdef SUPPORT_HARD_LINKS
1017 if (link_dest) {
1018 if (!hard_link_one(file, fname, cmpbuf, 1))
1019 goto try_a_copy;
1020 if (preserve_hard_links && F_IS_HLINKED(file))
1021 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
1022 if (!maybe_ATTRS_REPORT && (verbose > 1 || stdout_format_has_i > 1)) {
1023 itemize(cmpbuf, file, ndx, 1, sxp,
1024 ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
1025 0, "");
1026 }
1027 } else
1028 #endif
1029 if (itemizing)
1030 itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
1031 if (verbose > 1 && maybe_ATTRS_REPORT)
1032 rprintf(FCLIENT, "%s is uptodate\n", fname);
1033 return -2;
1034 }
1035
1036 if (match_level >= 2) {
1037 #ifdef SUPPORT_HARD_LINKS
1038 try_a_copy: /* Copy the file locally. */
1039 #endif
1040 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0)
1041 return -1;
1042 if (itemizing)
1043 itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
1044 if (maybe_ATTRS_REPORT
1045 && ((!itemizing && verbose && match_level == 2)
1046 || (verbose > 1 && match_level == 3))) {
1047 code = match_level == 3 ? FCLIENT : FINFO;
1048 rprintf(code, "%s%s\n", fname,
1049 match_level == 3 ? " is uptodate" : "");
1050 }
1051 #ifdef SUPPORT_HARD_LINKS
1052 if (preserve_hard_links && F_IS_HLINKED(file))
1053 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
1054 #endif
1055 return -2;
1056 }
1057
1058 return FNAMECMP_BASIS_DIR_LOW + j;
1059 }
1060
1061 /* This is only called for non-regular files. We return -2 if we've finished
1062 * handling the file, or -1 if no dest-linking occurred, or a non-negative
1063 * value if we found an alternate basis file. */
1064 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
1065 char *cmpbuf, stat_x *sxp, int itemizing,
1066 enum logcode code)
1067 {
1068 char lnk[MAXPATHLEN];
1069 int best_match = -1;
1070 int match_level = 0;
1071 enum nonregtype type;
1072 uint32 *devp;
1073 int len, j = 0;
1074
1075 #ifndef SUPPORT_LINKS
1076 if (S_ISLNK(file->mode))
1077 return -1;
1078 #endif
1079 if (S_ISDIR(file->mode)) {
1080 type = TYPE_DIR;
1081 } else if (IS_SPECIAL(file->mode))
1082 type = TYPE_SPECIAL;
1083 else if (IS_DEVICE(file->mode))
1084 type = TYPE_DEVICE;
1085 #ifdef SUPPORT_LINKS
1086 else if (S_ISLNK(file->mode))
1087 type = TYPE_SYMLINK;
1088 #endif
1089 else {
1090 rprintf(FERROR,
1091 "internal: try_dests_non() called with invalid mode (%o)\n",
1092 (int)file->mode);
1093 exit_cleanup(RERR_UNSUPPORTED);
1094 }
1095
1096 do {
1097 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1098 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1099 continue;
1100 switch (type) {
1101 case TYPE_DIR:
1102 if (!S_ISDIR(sxp->st.st_mode))
1103 continue;
1104 break;
1105 case TYPE_SPECIAL:
1106 if (!IS_SPECIAL(sxp->st.st_mode))
1107 continue;
1108 break;
1109 case TYPE_DEVICE:
1110 if (!IS_DEVICE(sxp->st.st_mode))
1111 continue;
1112 break;
1113 #ifdef SUPPORT_LINKS
1114 case TYPE_SYMLINK:
1115 if (!S_ISLNK(sxp->st.st_mode))
1116 continue;
1117 break;
1118 #endif
1119 }
1120 if (match_level < 1) {
1121 match_level = 1;
1122 best_match = j;
1123 }
1124 switch (type) {
1125 case TYPE_DIR:
1126 case TYPE_SPECIAL:
1127 break;
1128 case TYPE_DEVICE:
1129 devp = F_RDEV_P(file);
1130 if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1131 continue;
1132 break;
1133 #ifdef SUPPORT_LINKS
1134 case TYPE_SYMLINK:
1135 if ((len = readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1136 continue;
1137 lnk[len] = '\0';
1138 if (strcmp(lnk, F_SYMLINK(file)) != 0)
1139 continue;
1140 break;
1141 #endif
1142 }
1143 if (match_level < 2) {
1144 match_level = 2;
1145 best_match = j;
1146 }
1147 if (unchanged_attrs(cmpbuf, file, sxp)) {
1148 match_level = 3;
1149 best_match = j;
1150 break;
1151 }
1152 } while (basis_dir[++j] != NULL);
1153
1154 if (!match_level)
1155 return -1;
1156
1157 if (j != best_match) {
1158 j = best_match;
1159 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1160 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1161 return -1;
1162 }
1163
1164 if (match_level == 3) {
1165 #ifdef SUPPORT_HARD_LINKS
1166 if (link_dest
1167 #ifndef CAN_HARDLINK_SYMLINK
1168 && !S_ISLNK(file->mode)
1169 #endif
1170 #ifndef CAN_HARDLINK_SPECIAL
1171 && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1172 #endif
1173 && !S_ISDIR(file->mode)) {
1174 if (do_link(cmpbuf, fname) < 0) {
1175 rsyserr(FERROR_XFER, errno,
1176 "failed to hard-link %s with %s",
1177 cmpbuf, fname);
1178 return j;
1179 }
1180 if (preserve_hard_links && F_IS_HLINKED(file))
1181 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1182 } else
1183 #endif
1184 match_level = 2;
1185 if (itemizing && stdout_format_has_i
1186 && (verbose > 1 || stdout_format_has_i > 1)) {
1187 int chg = compare_dest && type != TYPE_DIR ? 0
1188 : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1189 char *lp = match_level == 3 ? "" : NULL;
1190 itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1191 }
1192 if (verbose > 1 && maybe_ATTRS_REPORT) {
1193 rprintf(FCLIENT, "%s%s is uptodate\n",
1194 fname, type == TYPE_DIR ? "/" : "");
1195 }
1196 return -2;
1197 }
1198
1199 return j;
1200 }
1201
1202 static void list_file_entry(struct file_struct *f)
1203 {
1204 char permbuf[PERMSTRING_SIZE];
1205 double len;
1206
1207 if (!F_IS_ACTIVE(f)) {
1208 /* this can happen if duplicate names were removed */
1209 return;
1210 }
1211
1212 permstring(permbuf, f->mode);
1213 len = F_LENGTH(f);
1214
1215 /* TODO: indicate '+' if the entry has an ACL. */
1216
1217 #ifdef SUPPORT_LINKS
1218 if (preserve_links && S_ISLNK(f->mode)) {
1219 rprintf(FINFO, "%s %11.0f %s %s -> %s\n",
1220 permbuf, len, timestring(f->modtime),
1221 f_name(f, NULL), F_SYMLINK(f));
1222 } else
1223 #endif
1224 {
1225 rprintf(FINFO, "%s %11.0f %s %s\n",
1226 permbuf, len, timestring(f->modtime),
1227 f_name(f, NULL));
1228 }
1229 }
1230
1231 static int phase = 0;
1232 static int dflt_perms;
1233
1234 static int implied_dirs_are_missing;
1235 /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1236 static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1237 {
1238 return F_DEPTH(file) > F_DEPTH(subtree)
1239 && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1240 }
1241
1242 /* Acts on the indicated item in cur_flist whose name is fname. If a dir,
1243 * make sure it exists, and has the right permissions/timestamp info. For
1244 * all other non-regular files (symlinks, etc.) we create them here. For
1245 * regular files that have changed, we try to find a basis file and then
1246 * start sending checksums. The ndx is the file's unique index value.
1247 *
1248 * The fname parameter must point to a MAXPATHLEN buffer! (e.g it gets
1249 * passed to delete_item(), which can use it during a recursive delete.)
1250 *
1251 * Note that f_out is set to -1 when doing final directory-permission and
1252 * modification-time repair. */
1253 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1254 int itemizing, enum logcode code, int f_out)
1255 {
1256 static const char *parent_dirname = "";
1257 /* Missing dir not created due to --dry-run; will still be scanned. */
1258 static struct file_struct *dry_missing_dir = NULL;
1259 /* Missing dir whose contents are skipped altogether due to
1260 * --ignore-non-existing, daemon exclude, or mkdir failure. */
1261 static struct file_struct *skip_dir = NULL;
1262 static struct file_list *fuzzy_dirlist = NULL;
1263 static int need_fuzzy_dirlist = 0;
1264 struct file_struct *fuzzy_file = NULL;
1265 int fd = -1, f_copy = -1;
1266 stat_x sx, real_sx;
1267 STRUCT_STAT partial_st;
1268 struct file_struct *back_file = NULL;
1269 int statret, real_ret, stat_errno;
1270 char *fnamecmp, *partialptr, *backupptr = NULL;
1271 char fnamecmpbuf[MAXPATHLEN];
1272 uchar fnamecmp_type;
1273 int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1274 int is_dir = !S_ISDIR(file->mode) ? 0
1275 : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1276 : 1;
1277
1278 if (verbose > 2)
1279 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1280
1281 if (list_only) {
1282 if (is_dir < 0
1283 || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1284 return;
1285 list_file_entry(file);
1286 return;
1287 }
1288
1289 if (skip_dir) {
1290 if (is_below(file, skip_dir)) {
1291 if (is_dir)
1292 file->flags |= FLAG_MISSING_DIR;
1293 #ifdef SUPPORT_HARD_LINKS
1294 else if (F_IS_HLINKED(file))
1295 handle_skipped_hlink(file, itemizing, code, f_out);
1296 #endif
1297 return;
1298 }
1299 skip_dir = NULL;
1300 }
1301
1302 if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1303 if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1304 if (is_dir < 0)
1305 return;
1306 #ifdef SUPPORT_HARD_LINKS
1307 if (F_IS_HLINKED(file))
1308 handle_skipped_hlink(file, itemizing, code, f_out);
1309 #endif
1310 rprintf(FERROR_XFER,
1311 "skipping daemon-excluded %s \"%s\"\n",
1312 is_dir ? "directory" : "file", fname);
1313 if (is_dir)
1314 goto skipping_dir_contents;
1315 return;
1316 }
1317 }
1318
1319 #ifdef SUPPORT_ACLS
1320 sx.acc_acl = sx.def_acl = NULL;
1321 #endif
1322 #ifdef SUPPORT_XATTRS
1323 sx.xattr = NULL;
1324 #endif
1325 if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1326 parent_is_dry_missing:
1327 if (fuzzy_dirlist) {
1328 flist_free(fuzzy_dirlist);
1329 fuzzy_dirlist = NULL;
1330 }
1331 parent_dirname = "";
1332 statret = -1;
1333 stat_errno = ENOENT;
1334 } else {
1335 const char *dn = file->dirname ? file->dirname : ".";
1336 dry_missing_dir = NULL;
1337 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1338 if (relative_paths && !implied_dirs
1339 && do_stat(dn, &sx.st) < 0) {
1340 if (dry_run)
1341 goto parent_is_dry_missing;
1342 if (create_directory_path(fname) < 0) {
1343 rsyserr(FERROR_XFER, errno,
1344 "recv_generator: mkdir %s failed",
1345 full_fname(dn));
1346 }
1347 }
1348 if (fuzzy_dirlist) {
1349 flist_free(fuzzy_dirlist);
1350 fuzzy_dirlist = NULL;
1351 }
1352 if (fuzzy_basis)
1353 need_fuzzy_dirlist = 1;
1354 #ifdef SUPPORT_ACLS
1355 if (!preserve_perms)
1356 dflt_perms = default_perms_for_dir(dn);
1357 #endif
1358 }
1359 parent_dirname = dn;
1360
1361 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1362 strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1363 fuzzy_dirlist = get_dirlist(fnamecmpbuf, -1, 1);
1364 need_fuzzy_dirlist = 0;
1365 }
1366
1367 statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1368 stat_errno = errno;
1369 }
1370
1371 if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1372 if (is_dir) {
1373 if (is_dir < 0)
1374 return;
1375 skip_dir = file;
1376 file->flags |= FLAG_MISSING_DIR;
1377 }
1378 #ifdef SUPPORT_HARD_LINKS
1379 else if (F_IS_HLINKED(file))
1380 handle_skipped_hlink(file, itemizing, code, f_out);
1381 #endif
1382 if (verbose > 1) {
1383 rprintf(FINFO, "not creating new %s \"%s\"\n",
1384 is_dir ? "directory" : "file", fname);
1385 }
1386 return;
1387 }
1388
1389 if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1390 && !am_root && sx.st.st_uid == our_uid)
1391 del_opts |= DEL_NO_UID_WRITE;
1392
1393 if (ignore_existing > 0 && statret == 0
1394 && (!is_dir || !S_ISDIR(sx.st.st_mode))) {
1395 if (verbose > 1 && is_dir >= 0)
1396 rprintf(FINFO, "%s exists\n", fname);
1397 #ifdef SUPPORT_HARD_LINKS
1398 if (F_IS_HLINKED(file))
1399 handle_skipped_hlink(file, itemizing, code, f_out);
1400 #endif
1401 goto cleanup;
1402 }
1403
1404 if (is_dir) {
1405 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1406 goto cleanup;
1407 if (is_dir < 0) {
1408 /* In inc_recurse mode we want to make sure any missing
1409 * directories get created while we're still processing
1410 * the parent dir (which allows us to touch the parent
1411 * dir's mtime right away). We will handle the dir in
1412 * full later (right before we handle its contents). */
1413 if (statret == 0
1414 && (S_ISDIR(sx.st.st_mode)
1415 || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1416 goto cleanup; /* Any errors get reported later. */
1417 if (do_mkdir(fname, file->mode & 0700) == 0)
1418 file->flags |= FLAG_DIR_CREATED;
1419 goto cleanup;
1420 }
1421 /* The file to be received is a directory, so we need
1422 * to prepare appropriately. If there is already a
1423 * file of that name and it is *not* a directory, then
1424 * we need to delete it. If it doesn't exist, then
1425 * (perhaps recursively) create it. */
1426 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1427 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1428 goto skipping_dir_contents;
1429 statret = -1;
1430 }
1431 if (dry_run && statret != 0) {
1432 if (!dry_missing_dir)
1433 dry_missing_dir = file;
1434 file->flags |= FLAG_MISSING_DIR;
1435 }
1436 real_ret = statret;
1437 real_sx = sx;
1438 if (file->flags & FLAG_DIR_CREATED)
1439 statret = -1;
1440 if (!preserve_perms) { /* See comment in non-dir code below. */
1441 file->mode = dest_mode(file->mode, sx.st.st_mode,
1442 dflt_perms, statret == 0);
1443 }
1444 if (statret != 0 && basis_dir[0] != NULL) {
1445 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1446 itemizing, code);
1447 if (j == -2) {
1448 itemizing = 0;
1449 code = FNONE;
1450 statret = 1;
1451 } else if (j >= 0)
1452 statret = 1;
1453 }
1454 if (itemizing && f_out != -1) {
1455 itemize(fname, file, ndx, statret, &sx,
1456 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1457 }
1458 if (real_ret != 0 && do_mkdir(fname,file->mode) < 0 && errno != EEXIST) {
1459 if (!relative_paths || errno != ENOENT
1460 || create_directory_path(fname) < 0
1461 || (do_mkdir(fname, file->mode) < 0 && errno != EEXIST)) {
1462 rsyserr(FERROR_XFER, errno,
1463 "recv_generator: mkdir %s failed",
1464 full_fname(fname));
1465 skipping_dir_contents:
1466 rprintf(FERROR,
1467 "*** Skipping any contents from this failed directory ***\n");
1468 skip_dir = file;
1469 file->flags |= FLAG_MISSING_DIR;
1470 goto cleanup;
1471 }
1472 }
1473 #ifdef SUPPORT_XATTRS
1474 if (preserve_xattrs && statret == 1)
1475 copy_xattrs(fnamecmpbuf, fname);
1476 #endif
1477 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1478 && verbose && code != FNONE && f_out != -1)
1479 rprintf(code, "%s/\n", fname);
1480
1481 /* We need to ensure that the dirs in the transfer have writable
1482 * permissions during the time we are putting files within them.
1483 * This is then fixed after the transfer is done. */
1484 #ifdef HAVE_CHMOD
1485 if (!am_root && !(file->mode & S_IWUSR) && dir_tweaking) {
1486 mode_t mode = file->mode | S_IWUSR;
1487 if (do_chmod(fname, mode) < 0) {
1488 rsyserr(FERROR_XFER, errno,
1489 "failed to modify permissions on %s",
1490 full_fname(fname));
1491 }
1492 need_retouch_dir_perms = 1;
1493 }
1494 #endif
1495
1496 if (real_ret != 0 && one_file_system)
1497 real_sx.st.st_dev = filesystem_dev;
1498 if (inc_recurse) {
1499 if (one_file_system) {
1500 uint32 *devp = F_DIR_DEV_P(file);
1501 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1502 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1503 }
1504 }
1505 else if (delete_during && f_out != -1 && !phase
1506 && !(file->flags & FLAG_MISSING_DIR)) {
1507 if (file->flags & FLAG_CONTENT_DIR)
1508 delete_in_dir(fname, file, &real_sx.st.st_dev);
1509 else
1510 change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1511 }
1512 goto cleanup;
1513 }
1514
1515 /* If we're not preserving permissions, change the file-list's
1516 * mode based on the local permissions and some heuristics. */
1517 if (!preserve_perms) {
1518 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1519 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1520 exists);
1521 }
1522
1523 #ifdef SUPPORT_HARD_LINKS
1524 if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1525 && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1526 goto cleanup;
1527 #endif
1528
1529 if (preserve_links && S_ISLNK(file->mode)) {
1530 #ifdef SUPPORT_LINKS
1531 const char *sl = F_SYMLINK(file);
1532 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1533 if (verbose) {
1534 if (solo_file)
1535 fname = f_name(file, NULL);
1536 rprintf(FINFO,
1537 "ignoring unsafe symlink %s -> \"%s\"\n",
1538 full_fname(fname), sl);
1539 }
1540 return;
1541 }
1542 if (statret == 0) {
1543 char lnk[MAXPATHLEN];
1544 int len;
1545
1546 if (!S_ISLNK(sx.st.st_mode))
1547 statret = -1;
1548 else if ((len = readlink(fname, lnk, MAXPATHLEN-1)) > 0
1549 && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1550 /* The link is pointing to the right place. */
1551 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1552 if (itemizing)
1553 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1554 #if defined SUPPORT_HARD_LINKS && defined CAN_HARDLINK_SYMLINK
1555 if (preserve_hard_links && F_IS_HLINKED(file))
1556 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1557 #endif
1558 if (remove_source_files == 1)
1559 goto return_with_success;
1560 goto cleanup;
1561 }
1562 /* Not the right symlink (or not a symlink), so
1563 * delete it. */
1564 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_SYMLINK) != 0)
1565 goto cleanup;
1566 } else if (basis_dir[0] != NULL) {
1567 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1568 itemizing, code);
1569 if (j == -2) {
1570 #ifndef CAN_HARDLINK_SYMLINK
1571 if (link_dest) {
1572 /* Resort to --copy-dest behavior. */
1573 } else
1574 #endif
1575 if (!copy_dest)
1576 goto cleanup;
1577 itemizing = 0;
1578 code = FNONE;
1579 } else if (j >= 0)
1580 statret = 1;
1581 }
1582 #ifdef SUPPORT_HARD_LINKS
1583 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1584 cur_flist->in_progress++;
1585 goto cleanup;
1586 }
1587 #endif
1588 if (do_symlink(sl, fname) != 0) {
1589 rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
1590 full_fname(fname), sl);
1591 } else {
1592 set_file_attrs(fname, file, NULL, NULL, 0);
1593 if (itemizing) {
1594 itemize(fname, file, ndx, statret, &sx,
1595 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1596 }
1597 if (code != FNONE && verbose)
1598 rprintf(code, "%s -> %s\n", fname, sl);
1599 #ifdef SUPPORT_HARD_LINKS
1600 if (preserve_hard_links && F_IS_HLINKED(file))
1601 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1602 #endif
1603 /* This does not check remove_source_files == 1
1604 * because this is one of the items that the old
1605 * --remove-sent-files option would remove. */
1606 if (remove_source_files)
1607 goto return_with_success;
1608 }
1609 #endif
1610 goto cleanup;
1611 }
1612
1613 if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1614 || (preserve_specials && IS_SPECIAL(file->mode))) {
1615 dev_t rdev;
1616 if (IS_DEVICE(file->mode)) {
1617 uint32 *devp = F_RDEV_P(file);
1618 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1619 } else
1620 rdev = 0;
1621 if (statret == 0) {
1622 int del_for_flag;
1623 if (IS_DEVICE(file->mode)) {
1624 if (!IS_DEVICE(sx.st.st_mode))
1625 statret = -1;
1626 del_for_flag = DEL_FOR_DEVICE;
1627 } else {
1628 if (!IS_SPECIAL(sx.st.st_mode))
1629 statret = -1;
1630 del_for_flag = DEL_FOR_SPECIAL;
1631 }
1632 if (statret == 0
1633 && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1634 && (IS_SPECIAL(sx.st.st_mode) || sx.st.st_rdev == rdev)) {
1635 /* The device or special file is identical. */
1636 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1637 if (itemizing)
1638 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1639 #ifdef SUPPORT_HARD_LINKS
1640 if (preserve_hard_links && F_IS_HLINKED(file))
1641 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1642 #endif
1643 if (remove_source_files == 1)
1644 goto return_with_success;
1645 goto cleanup;
1646 }
1647 if (delete_item(fname, sx.st.st_mode, del_opts | del_for_flag) != 0)
1648 goto cleanup;
1649 } else if (basis_dir[0] != NULL) {
1650 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1651 itemizing, code);
1652 if (j == -2) {
1653 #ifndef CAN_HARDLINK_SPECIAL
1654 if (link_dest) {
1655 /* Resort to --copy-dest behavior. */
1656 } else
1657 #endif
1658 if (!copy_dest)
1659 goto cleanup;
1660 itemizing = 0;
1661 code = FNONE;
1662 } else if (j >= 0)
1663 statret = 1;
1664 }
1665 #ifdef SUPPORT_HARD_LINKS
1666 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1667 cur_flist->in_progress++;
1668 goto cleanup;
1669 }
1670 #endif
1671 if (verbose > 2) {
1672 rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1673 fname, (int)file->mode,
1674 (long)major(rdev), (long)minor(rdev));
1675 }
1676 if (do_mknod(fname, file->mode, rdev) < 0) {
1677 rsyserr(FERROR_XFER, errno, "mknod %s failed",
1678 full_fname(fname));
1679 } else {
1680 set_file_attrs(fname, file, NULL, NULL, 0);
1681 if (itemizing) {
1682 itemize(fname, file, ndx, statret, &sx,
1683 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1684 }
1685 if (code != FNONE && verbose)
1686 rprintf(code, "%s\n", fname);
1687 #ifdef SUPPORT_HARD_LINKS
1688 if (preserve_hard_links && F_IS_HLINKED(file))
1689 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1690 #endif
1691 if (remove_source_files == 1)
1692 goto return_with_success;
1693 }
1694 goto cleanup;
1695 }
1696
1697 if (!S_ISREG(file->mode)) {
1698 if (solo_file)
1699 fname = f_name(file, NULL);
1700 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1701 goto cleanup;
1702 }
1703
1704 if (max_size > 0 && F_LENGTH(file) > max_size) {
1705 if (verbose > 1) {
1706 if (solo_file)
1707 fname = f_name(file, NULL);
1708 rprintf(FINFO, "%s is over max-size\n", fname);
1709 }
1710 goto cleanup;
1711 }
1712 if (min_size > 0 && F_LENGTH(file) < min_size) {
1713 if (verbose > 1) {
1714 if (solo_file)
1715 fname = f_name(file, NULL);
1716 rprintf(FINFO, "%s is under min-size\n", fname);
1717 }
1718 goto cleanup;
1719 }
1720
1721 if (update_only > 0 && statret == 0
1722 && cmp_time(sx.st.st_mtime, file->modtime) > 0) {
1723 if (verbose > 1)
1724 rprintf(FINFO, "%s is newer\n", fname);
1725 #ifdef SUPPORT_HARD_LINKS
1726 if (F_IS_HLINKED(file))
1727 handle_skipped_hlink(file, itemizing, code, f_out);
1728 #endif
1729 goto cleanup;
1730 }
1731
1732 fnamecmp = fname;
1733 fnamecmp_type = FNAMECMP_FNAME;
1734
1735 if (statret == 0 && !S_ISREG(sx.st.st_mode)) {
1736 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1737 goto cleanup;
1738 statret = -1;
1739 stat_errno = ENOENT;
1740 }
1741
1742 if (statret != 0 && basis_dir[0] != NULL) {
1743 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1744 itemizing, code);
1745 if (j == -2) {
1746 if (remove_source_files == 1)
1747 goto return_with_success;
1748 goto cleanup;
1749 }
1750 if (j >= 0) {
1751 fnamecmp = fnamecmpbuf;
1752 fnamecmp_type = j;
1753 statret = 0;
1754 }
1755 }
1756
1757 real_ret = statret;
1758 real_sx = sx;
1759
1760 if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1761 && link_stat(partialptr, &partial_st, 0) == 0
1762 && S_ISREG(partial_st.st_mode)) {
1763 if (statret != 0)
1764 goto prepare_to_open;
1765 } else
1766 partialptr = NULL;
1767
1768 if (statret != 0 && fuzzy_dirlist) {
1769 int j = find_fuzzy(file, fuzzy_dirlist);
1770 if (j >= 0) {
1771 fuzzy_file = fuzzy_dirlist->files[j];
1772 f_name(fuzzy_file, fnamecmpbuf);
1773 if (verbose > 2) {
1774 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1775 fname, fnamecmpbuf);
1776 }
1777 sx.st.st_size = F_LENGTH(fuzzy_file);
1778 statret = 0;
1779 fnamecmp = fnamecmpbuf;
1780 fnamecmp_type = FNAMECMP_FUZZY;
1781 }
1782 }
1783
1784 if (statret != 0) {
1785 #ifdef SUPPORT_HARD_LINKS
1786 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1787 cur_flist->in_progress++;
1788 goto cleanup;
1789 }
1790 #endif
1791 if (stat_errno == ENOENT)
1792 goto notify_others;
1793 rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1794 full_fname(fname));
1795 goto cleanup;
1796 }
1797
1798 if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1799 ;
1800 else if (fnamecmp_type == FNAMECMP_FUZZY)
1801 ;
1802 else if (unchanged_file(fnamecmp, file, &sx.st)) {
1803 if (partialptr) {
1804 do_unlink(partialptr);
1805 handle_partial_dir(partialptr, PDIR_DELETE);
1806 }
1807 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1808 if (itemizing)
1809 itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1810 #ifdef SUPPORT_HARD_LINKS
1811 if (preserve_hard_links && F_IS_HLINKED(file))
1812 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1813 #endif
1814 if (remove_source_files != 1)
1815 goto cleanup;
1816 return_with_success:
1817 if (!dry_run)
1818 send_msg_int(MSG_SUCCESS, ndx);
1819 goto cleanup;
1820 }
1821
1822 if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1823 #ifdef SUPPORT_HARD_LINKS
1824 if (F_IS_HLINKED(file))
1825 handle_skipped_hlink(file, itemizing, code, f_out);
1826 #endif
1827 goto cleanup;
1828 }
1829
1830 prepare_to_open:
1831 if (partialptr) {
1832 sx.st = partial_st;
1833 fnamecmp = partialptr;
1834 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1835 statret = 0;
1836 }
1837
1838 if (!do_xfers)
1839 goto notify_others;
1840
1841 if (read_batch || whole_file) {
1842 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1843 if (!(backupptr = get_backup_name(fname)))
1844 goto cleanup;
1845 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1846 goto pretend_missing;
1847 if (copy_file(fname, backupptr, -1, back_file->mode, 1) < 0) {
1848 unmake_file(back_file);
1849 back_file = NULL;
1850 goto cleanup;
1851 }
1852 }
1853 goto notify_others;
1854 }
1855
1856 if (fuzzy_dirlist) {
1857 int j = flist_find(fuzzy_dirlist, file);
1858 if (j >= 0) /* don't use changing file as future fuzzy basis */
1859 fuzzy_dirlist->files[j]->flags |= FLAG_FILE_SENT;
1860 }
1861
1862 /* open the file */
1863 if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1864 rsyserr(FERROR, errno, "failed to open %s, continuing",
1865 full_fname(fnamecmp));
1866 pretend_missing:
1867 /* pretend the file didn't exist */
1868 #ifdef SUPPORT_HARD_LINKS
1869 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1870 cur_flist->in_progress++;
1871 goto cleanup;
1872 }
1873 #endif
1874 statret = real_ret = -1;
1875 goto notify_others;
1876 }
1877
1878 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1879 if (!(backupptr = get_backup_name(fname))) {
1880 close(fd);
1881 goto cleanup;
1882 }
1883 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1884 close(fd);
1885 goto pretend_missing;
1886 }
1887 if (robust_unlink(backupptr) && errno != ENOENT) {
1888 rsyserr(FERROR_XFER, errno, "unlink %s",
1889 full_fname(backupptr));
1890 unmake_file(back_file);
1891 back_file = NULL;
1892 close(fd);
1893 goto cleanup;
1894 }
1895 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1896 int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
1897 if (errno == ENOENT && make_bak_dir(backupptr) == 0) {
1898 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0)
1899 save_errno = errno ? errno : save_errno;
1900 else
1901 save_errno = 0;
1902 }
1903 if (save_errno) {
1904 rsyserr(FERROR_XFER, save_errno, "open %s", full_fname(backupptr));
1905 unmake_file(back_file);
1906 back_file = NULL;
1907 close(fd);
1908 goto cleanup;
1909 }
1910 }
1911 fnamecmp_type = FNAMECMP_BACKUP;
1912 }
1913
1914 if (verbose > 3) {
1915 rprintf(FINFO, "gen mapped %s of size %.0f\n",
1916 fnamecmp, (double)sx.st.st_size);
1917 }
1918
1919 if (verbose > 2)
1920 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1921
1922 notify_others:
1923 if (remove_source_files && !delay_updates && !phase && !dry_run)
1924 increment_active_files(ndx, itemizing, code);
1925 if (inc_recurse && !dry_run)
1926 cur_flist->in_progress++;
1927 #ifdef SUPPORT_HARD_LINKS
1928 if (preserve_hard_links && F_IS_HLINKED(file))
1929 file->flags |= FLAG_FILE_SENT;
1930 #endif
1931 write_ndx(f_out, ndx);
1932 if (itemizing) {
1933 int iflags = ITEM_TRANSFER;
1934 if (always_checksum > 0)
1935 iflags |= ITEM_REPORT_CHANGE;
1936 if (fnamecmp_type != FNAMECMP_FNAME)
1937 iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1938 if (fnamecmp_type == FNAMECMP_FUZZY)
1939 iflags |= ITEM_XNAME_FOLLOWS;
1940 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1941 fuzzy_file ? fuzzy_file->basename : NULL);
1942 #ifdef SUPPORT_ACLS
1943 if (preserve_acls)
1944 free_acl(&real_sx);
1945 #endif
1946 #ifdef SUPPORT_XATTRS
1947 if (preserve_xattrs)
1948 free_xattr(&real_sx);
1949 #endif
1950 }
1951
1952 if (!do_xfers) {
1953 #ifdef SUPPORT_HARD_LINKS
1954 if (preserve_hard_links && F_IS_HLINKED(file))
1955 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1956 #endif
1957 goto cleanup;
1958 }
1959 if (read_batch)
1960 goto cleanup;
1961
1962 if (statret != 0 || whole_file)
1963 write_sum_head(f_out, NULL);
1964 else if (sx.st.st_size <= 0) {
1965 write_sum_head(f_out, NULL);
1966 close(fd);
1967 } else {
1968 if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
1969 rprintf(FWARNING,
1970 "WARNING: file is too large for checksum sending: %s\n",
1971 fnamecmp);
1972 write_sum_head(f_out, NULL);
1973 }
1974 close(fd);
1975 }
1976
1977 cleanup:
1978 if (back_file) {
1979 int save_preserve_xattrs = preserve_xattrs;
1980 if (f_copy >= 0)
1981 close(f_copy);
1982 #ifdef SUPPORT_XATTRS
1983 if (preserve_xattrs) {
1984 copy_xattrs(fname, backupptr);
1985 preserve_xattrs = 0;
1986 }
1987 #endif
1988 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1989 preserve_xattrs = save_preserve_xattrs;
1990 if (verbose > 1) {
1991 rprintf(FINFO, "backed up %s to %s\n",
1992 fname, backupptr);
1993 }
1994 unmake_file(back_file);
1995 }
1996
1997 #ifdef SUPPORT_ACLS
1998 if (preserve_acls)
1999 free_acl(&sx);
2000 #endif
2001 #ifdef SUPPORT_XATTRS
2002 if (preserve_xattrs)
2003 free_xattr(&sx);
2004 #endif
2005 return;
2006 }
2007
2008 #ifdef SUPPORT_HARD_LINKS
2009 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
2010 enum logcode code, int f_out)
2011 {
2012 char fbuf[MAXPATHLEN];
2013 int new_last_ndx;
2014 struct file_list *save_flist = cur_flist;
2015
2016 /* If we skip the last item in a chain of links and there was a
2017 * prior non-skipped hard-link waiting to finish, finish it now. */
2018 if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
2019 return;
2020
2021 file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
2022 cur_flist->in_progress--; /* undo prior increment */
2023 f_name(file, fbuf);
2024 recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
2025
2026 cur_flist = save_flist;
2027 }
2028 #endif
2029
2030 static void touch_up_dirs(struct file_list *flist, int ndx)
2031 {
2032 static int counter = 0;
2033 struct file_struct *file;
2034 char *fname;
2035 BOOL fix_dir_perms;
2036 int i, start, end;
2037
2038 if (ndx < 0) {
2039 start = 0;
2040 end = flist->used - 1;
2041 } else
2042 start = end = ndx;
2043
2044 /* Fix any directory permissions that were modified during the
2045 * transfer and/or re-set any tweaked modified-time values. */
2046 for (i = start; i <= end; i++, counter++) {
2047 file = flist->files[i];
2048 if (!S_ISDIR(file->mode)
2049 || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
2050 continue;
2051 if (verbose > 3) {
2052 fname = f_name(file, NULL);
2053 rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
2054 NS(fname), i);
2055 }
2056 /* Be sure not to retouch permissions with --fake-super. */
2057 fix_dir_perms = !am_root && !(file->mode & S_IWUSR);
2058 if (!F_IS_ACTIVE(file) || file->flags & FLAG_MISSING_DIR
2059 || !(need_retouch_dir_times || fix_dir_perms))
2060 continue;
2061 fname = f_name(file, NULL);
2062 if (fix_dir_perms)
2063 do_chmod(fname, file->mode);
2064 if (need_retouch_dir_times) {
2065 STRUCT_STAT st;
2066 if (link_stat(fname, &st, 0) == 0
2067 && cmp_time(st.st_mtime, file->modtime) != 0)
2068 set_modtime(fname, file->modtime, file->mode);
2069 }
2070 if (counter >= loopchk_limit) {
2071 if (allowed_lull)
2072 maybe_send_keepalive();
2073 else
2074 maybe_flush_socket(0);
2075 counter = 0;
2076 }
2077 }
2078 }
2079
2080 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
2081 {
2082 struct file_struct *file;
2083 struct file_list *flist;
2084 char fbuf[MAXPATHLEN];
2085 int ndx;
2086
2087 while (1) {
2088 #ifdef SUPPORT_HARD_LINKS
2089 if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
2090 flist = flist_for_ndx(ndx, "check_for_finished_files.1");
2091 file = flist->files[ndx - flist->ndx_start];
2092 assert(file->flags & FLAG_HLINKED);
2093 finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
2094 flist->in_progress--;
2095 continue;
2096 }
2097 #endif
2098
2099 if (check_redo && (ndx = get_redo_num()) != -1) {
2100 csum_length = SUM_LENGTH;
2101 max_size = -max_size;
2102 min_size = -min_size;
2103 ignore_existing = -ignore_existing;
2104 ignore_non_existing = -ignore_non_existing;
2105 update_only = -update_only;
2106 always_checksum = -always_checksum;
2107 size_only = -size_only;
2108 append_mode = -append_mode;
2109 make_backups = -make_backups; /* avoid dup backup w/inplace */
2110 ignore_times++;
2111
2112 flist = cur_flist;
2113 cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
2114
2115 file = cur_flist->files[ndx - cur_flist->ndx_start];
2116 if (solo_file)
2117 strlcpy(fbuf, solo_file, sizeof fbuf);
2118 else
2119 f_name(file, fbuf);
2120 recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
2121 cur_flist->to_redo--;
2122
2123 cur_flist = flist;
2124
2125 csum_length = SHORT_SUM_LENGTH;
2126 max_size = -max_size;
2127 min_size = -min_size;
2128 ignore_existing = -ignore_existing;
2129 ignore_non_existing = -ignore_non_existing;
2130 update_only = -update_only;
2131 always_checksum = -always_checksum;
2132 size_only = -size_only;
2133 append_mode = -append_mode;
2134 make_backups = -make_backups;
2135 ignore_times--;
2136 continue;
2137 }
2138
2139 if (cur_flist == first_flist)
2140 break;
2141
2142 /* We only get here if inc_recurse is enabled. */
2143 if (first_flist->in_progress || first_flist->to_redo)
2144 break;
2145
2146 write_ndx(sock_f_out, NDX_DONE);
2147 if (!read_batch)
2148 maybe_flush_socket(1);
2149
2150 if (delete_during == 2 || !dir_tweaking) {
2151 /* Skip directory touch-up. */
2152 } else if (first_flist->parent_ndx >= 0)
2153 touch_up_dirs(dir_flist, first_flist->parent_ndx);
2154
2155 flist_free(first_flist); /* updates first_flist */
2156 }
2157 }
2158
2159 void generate_files(int f_out, const char *local_name)
2160 {
2161 int i, ndx, next_loopchk = 0;
2162 char fbuf[MAXPATHLEN];
2163 int itemizing;
2164 enum logcode code;
2165 int save_do_progress = do_progress;
2166
2167 if (protocol_version >= 29) {
2168 itemizing = 1;
2169 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2170 code = logfile_format_has_i ? FNONE : FLOG;
2171 } else if (am_daemon) {
2172 itemizing = logfile_format_has_i && do_xfers;
2173 maybe_ATTRS_REPORT = ATTRS_REPORT;
2174 code = itemizing || !do_xfers ? FCLIENT : FINFO;
2175 } else if (!am_server) {
2176 itemizing = stdout_format_has_i;
2177 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2178 code = itemizing ? FNONE : FINFO;
2179 } else {
2180 itemizing = 0;
2181 maybe_ATTRS_REPORT = ATTRS_REPORT;
2182 code = FINFO;
2183 }
2184 solo_file = local_name;
2185 dir_tweaking = !(list_only || solo_file || dry_run);
2186 need_retouch_dir_times = preserve_times > 1;
2187 loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2188 symlink_timeset_failed_flags = ITEM_REPORT_TIME
2189 | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2190 implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2191
2192 if (verbose > 2)
2193 rprintf(FINFO, "generator starting pid=%ld\n", (long)getpid());
2194
2195 if (delete_before && !solo_file && cur_flist->used > 0)
2196 do_delete_pass();
2197 if (delete_during == 2) {
2198 deldelay_size = BIGPATHBUFLEN * 4;
2199 deldelay_buf = new_array(char, deldelay_size);
2200 if (!deldelay_buf)
2201 out_of_memory("delete-delay");
2202 }
2203 do_progress = 0;
2204
2205 if (append_mode > 0 || whole_file < 0)
2206 whole_file = 0;
2207 if (verbose >= 2) {
2208 rprintf(FINFO, "delta-transmission %s\n",
2209 whole_file
2210 ? "disabled for local transfer or --whole-file"
2211 : "enabled");
2212 }
2213
2214 dflt_perms = (ACCESSPERMS & ~orig_umask);
2215
2216 do {
2217 #ifdef SUPPORT_HARD_LINKS
2218 if (preserve_hard_links && inc_recurse) {
2219 while (!flist_eof && file_total < FILECNT_LOOKAHEAD/2)
2220 wait_for_receiver();
2221 }
2222 #endif
2223
2224 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2225 struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2226 if (solo_file)
2227 strlcpy(fbuf, solo_file, sizeof fbuf);
2228 else
2229 f_name(fp, fbuf);
2230 ndx = cur_flist->ndx_start - 1;
2231 recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2232 if (delete_during && dry_run < 2 && !list_only
2233 && !(fp->flags & FLAG_MISSING_DIR)) {
2234 if (fp->flags & FLAG_CONTENT_DIR) {
2235 dev_t dirdev;
2236 if (one_file_system) {
2237 uint32 *devp = F_DIR_DEV_P(fp);
2238 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2239 } else
2240 dirdev = MAKEDEV(0, 0);
2241 delete_in_dir(fbuf, fp, &dirdev);
2242 } else
2243 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2244 }
2245 }
2246 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2247 struct file_struct *file = cur_flist->sorted[i];
2248
2249 if (!F_IS_ACTIVE(file))
2250 continue;
2251
2252 if (unsort_ndx)
2253 ndx = F_NDX(file);
2254 else
2255 ndx = i + cur_flist->ndx_start;
2256
2257 if (solo_file)
2258 strlcpy(fbuf, solo_file, sizeof fbuf);
2259 else
2260 f_name(file, fbuf);
2261 recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2262
2263 check_for_finished_files(itemizing, code, 0);
2264
2265 if (i + cur_flist->ndx_start >= next_loopchk) {
2266 if (allowed_lull)
2267 maybe_send_keepalive();
2268 else
2269 maybe_flush_socket(0);
2270 next_loopchk += loopchk_limit;
2271 }
2272 }
2273
2274 if (!inc_recurse) {
2275 write_ndx(f_out, NDX_DONE);
2276 break;
2277 }
2278
2279 while (1) {
2280 check_for_finished_files(itemizing, code, 1);
2281 if (cur_flist->next || flist_eof)
2282 break;
2283 wait_for_receiver();
2284 }
2285 } while ((cur_flist = cur_flist->next) != NULL);
2286
2287 if (delete_during)
2288 delete_in_dir(NULL, NULL, &dev_zero);
2289 phase++;
2290 if (verbose > 2)
2291 rprintf(FINFO, "generate_files phase=%d\n", phase);
2292
2293 while (1) {
2294 check_for_finished_files(itemizing, code, 1);
2295 if (msgdone_cnt)
2296 break;
2297 wait_for_receiver();
2298 }
2299
2300 phase++;
2301 if (verbose > 2)
2302 rprintf(FINFO, "generate_files phase=%d\n", phase);
2303
2304 write_ndx(f_out, NDX_DONE);
2305
2306 /* Reduce round-trip lag-time for a useless delay-updates phase. */
2307 if (protocol_version >= 29 && !delay_updates)
2308 write_ndx(f_out, NDX_DONE);
2309
2310 /* Read MSG_DONE for the redo phase (and any prior messages). */
2311 while (1) {
2312 check_for_finished_files(itemizing, code, 0);
2313 if (msgdone_cnt > 1)
2314 break;
2315 wait_for_receiver();
2316 }
2317
2318 if (protocol_version >= 29) {
2319 phase++;
2320 if (verbose > 2)
2321 rprintf(FINFO, "generate_files phase=%d\n", phase);
2322 if (delay_updates)
2323 write_ndx(f_out, NDX_DONE);
2324 /* Read MSG_DONE for delay-updates phase & prior messages. */
2325 while (msgdone_cnt == 2)
2326 wait_for_receiver();
2327 }
2328
2329 do_progress = save_do_progress;
2330 if (delete_during == 2)
2331 do_delayed_deletions(fbuf);
2332 if (delete_after && !solo_file && file_total > 0)
2333 do_delete_pass();
2334
2335 if ((need_retouch_dir_perms || need_retouch_dir_times)
2336 && dir_tweaking && (!inc_recurse || delete_during == 2))
2337 touch_up_dirs(dir_flist, -1);
2338
2339 if (max_delete >= 0 && deletion_count > max_delete) {
2340 rprintf(FWARNING,
2341 "Deletions stopped due to --max-delete limit (%d skipped)\n",
2342 deletion_count - max_delete);
2343 io_error |= IOERR_DEL_LIMIT;
2344 }
2345
2346 if (verbose > 2)
2347 rprintf(FINFO, "generate_files finished\n");
2348 }