Avoid re-setting (and sending) xattrs on a hard-linked file w/the same xattrs.
[rsync/rsync.git] / receiver.c
... / ...
CommitLineData
1/*
2 * Routines only used by the receiving process.
3 *
4 * Copyright (C) 1996-2000 Andrew Tridgell
5 * Copyright (C) 1996 Paul Mackerras
6 * Copyright (C) 2003-2009 Wayne Davison
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 3 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, visit the http://fsf.org website.
20 */
21
22#include "rsync.h"
23#include "inums.h"
24
25extern int dry_run;
26extern int do_xfers;
27extern int am_root;
28extern int am_server;
29extern int inc_recurse;
30extern int log_before_transfer;
31extern int stdout_format_has_i;
32extern int logfile_format_has_i;
33extern int csum_length;
34extern int read_batch;
35extern int write_batch;
36extern int batch_gen_fd;
37extern int protocol_version;
38extern int relative_paths;
39extern int preserve_hard_links;
40extern int preserve_perms;
41extern int preserve_xattrs;
42extern int basis_dir_cnt;
43extern int make_backups;
44extern int cleanup_got_literal;
45extern int remove_source_files;
46extern int append_mode;
47extern int sparse_files;
48extern int keep_partial;
49extern int checksum_len;
50extern int checksum_seed;
51extern int inplace;
52extern int allowed_lull;
53extern int delay_updates;
54extern mode_t orig_umask;
55extern struct stats stats;
56extern char *tmpdir;
57extern char *partial_dir;
58extern char *basis_dir[MAX_BASIS_DIRS+1];
59extern char sender_file_sum[MAX_DIGEST_LEN];
60extern struct file_list *cur_flist, *first_flist, *dir_flist;
61extern filter_rule_list daemon_filter_list;
62
63static struct bitbag *delayed_bits = NULL;
64static int phase = 0, redoing = 0;
65static flist_ndx_list batch_redo_list;
66/* We're either updating the basis file or an identical copy: */
67static int updating_basis_or_equiv;
68
69#define TMPNAME_SUFFIX ".XXXXXX"
70#define TMPNAME_SUFFIX_LEN ((int)sizeof TMPNAME_SUFFIX - 1)
71#define MAX_UNIQUE_NUMBER 999999
72#define MAX_UNIQUE_LOOP 100
73
74/* get_tmpname() - create a tmp filename for a given filename
75 *
76 * If a tmpdir is defined, use that as the directory to put it in. Otherwise,
77 * the tmp filename is in the same directory as the given name. Note that
78 * there may be no directory at all in the given name!
79 *
80 * The tmp filename is basically the given filename with a dot prepended, and
81 * .XXXXXX appended (for mkstemp() to put its unique gunk in). We take care
82 * to not exceed either the MAXPATHLEN or NAME_MAX, especially the last, as
83 * the basename basically becomes 8 characters longer. In such a case, the
84 * original name is shortened sufficiently to make it all fit.
85 *
86 * If the make_unique arg is True, the XXXXXX string is replaced with a unique
87 * string that doesn't exist at the time of the check. This is intended to be
88 * used for creating hard links, symlinks, devices, and special files, since
89 * normal files should be handled by mkstemp() for safety.
90 *
91 * Of course, the only reason the file is based on the original name is to
92 * make it easier to figure out what purpose a temp file is serving when a
93 * transfer is in progress. */
94int get_tmpname(char *fnametmp, const char *fname, BOOL make_unique)
95{
96 int maxname, added, length = 0;
97 const char *f;
98 char *suf;
99
100 if (tmpdir) {
101 /* Note: this can't overflow, so the return value is safe */
102 length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
103 fnametmp[length++] = '/';
104 }
105
106 if ((f = strrchr(fname, '/')) != NULL) {
107 ++f;
108 if (!tmpdir) {
109 length = f - fname;
110 /* copy up to and including the slash */
111 strlcpy(fnametmp, fname, length + 1);
112 }
113 } else
114 f = fname;
115 fnametmp[length++] = '.';
116
117 /* The maxname value is bufsize, and includes space for the '\0'.
118 * NAME_MAX needs an extra -1 for the name's leading dot. */
119 maxname = MIN(MAXPATHLEN - length - TMPNAME_SUFFIX_LEN,
120 NAME_MAX - 1 - TMPNAME_SUFFIX_LEN);
121
122 if (maxname < 1) {
123 rprintf(FERROR_XFER, "temporary filename too long: %s\n", fname);
124 fnametmp[0] = '\0';
125 return 0;
126 }
127
128 added = strlcpy(fnametmp + length, f, maxname);
129 if (added >= maxname)
130 added = maxname - 1;
131 suf = fnametmp + length + added;
132
133 /* Trim any dangling high-bit chars if the first-trimmed char (if any) is
134 * also a high-bit char, just in case we cut into a multi-byte sequence.
135 * We are guaranteed to stop because of the leading '.' we added. */
136 if ((int)f[added] & 0x80) {
137 while ((int)suf[-1] & 0x80)
138 suf--;
139 }
140
141 if (make_unique) {
142 static unsigned counter_limit;
143 unsigned counter;
144
145 if (!counter_limit) {
146 counter_limit = (unsigned)getpid() + MAX_UNIQUE_LOOP;
147 if (counter_limit > MAX_UNIQUE_NUMBER || counter_limit < MAX_UNIQUE_LOOP)
148 counter_limit = MAX_UNIQUE_LOOP;
149 }
150 counter = counter_limit - MAX_UNIQUE_LOOP;
151
152 /* This doesn't have to be very good because we don't need
153 * to worry about someone trying to guess the values: all
154 * a conflict will do is cause a device, special file, hard
155 * link, or symlink to fail to be created. Also: avoid
156 * using mktemp() due to gcc's annoying warning. */
157 while (1) {
158 snprintf(suf, TMPNAME_SUFFIX_LEN+1, ".%d", counter);
159 if (access(fnametmp, 0) < 0)
160 break;
161 if (++counter >= counter_limit)
162 return 0;
163 }
164 } else
165 memcpy(suf, TMPNAME_SUFFIX, TMPNAME_SUFFIX_LEN+1);
166
167 return 1;
168}
169
170/* Opens a temporary file for writing.
171 * Success: Writes name into fnametmp, returns fd.
172 * Failure: Clobbers fnametmp, returns -1.
173 * Calling cleanup_set() is the caller's job. */
174int open_tmpfile(char *fnametmp, const char *fname, struct file_struct *file)
175{
176 int fd;
177 mode_t added_perms;
178
179 if (!get_tmpname(fnametmp, fname, False))
180 return -1;
181
182 if (am_root < 0) {
183 /* For --fake-super, the file must be useable by the copying
184 * user, just like it would be for root. */
185 added_perms = S_IRUSR|S_IWUSR;
186 } else {
187 /* For a normal copy, we need to be able to tweak things like xattrs. */
188 added_perms = S_IWUSR;
189 }
190
191 /* We initially set the perms without the setuid/setgid bits or group
192 * access to ensure that there is no race condition. They will be
193 * correctly updated after the right owner and group info is set.
194 * (Thanks to snabb@epipe.fi for pointing this out.) */
195 fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
196
197#if 0
198 /* In most cases parent directories will already exist because their
199 * information should have been previously transferred, but that may
200 * not be the case with -R */
201 if (fd == -1 && relative_paths && errno == ENOENT
202 && make_path(fnametmp, MKP_SKIP_SLASH | MKP_DROP_NAME) == 0) {
203 /* Get back to name with XXXXXX in it. */
204 get_tmpname(fnametmp, fname, False);
205 fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
206 }
207#endif
208
209 if (fd == -1) {
210 rsyserr(FERROR_XFER, errno, "mkstemp %s failed",
211 full_fname(fnametmp));
212 return -1;
213 }
214
215 return fd;
216}
217
218static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
219 const char *fname, int fd, OFF_T total_size)
220{
221 static char file_sum1[MAX_DIGEST_LEN];
222 struct map_struct *mapbuf;
223 struct sum_struct sum;
224 int32 len;
225 OFF_T offset = 0;
226 OFF_T offset2;
227 char *data;
228 int32 i;
229 char *map = NULL;
230
231 read_sum_head(f_in, &sum);
232
233 if (fd_r >= 0 && size_r > 0) {
234 int32 read_size = MAX(sum.blength * 2, 16*1024);
235 mapbuf = map_file(fd_r, size_r, read_size, sum.blength);
236 if (DEBUG_GTE(DELTASUM, 2)) {
237 rprintf(FINFO, "recv mapped %s of size %s\n",
238 fname_r, big_num(size_r));
239 }
240 } else
241 mapbuf = NULL;
242
243 sum_init(checksum_seed);
244
245 if (append_mode > 0) {
246 OFF_T j;
247 sum.flength = (OFF_T)sum.count * sum.blength;
248 if (sum.remainder)
249 sum.flength -= sum.blength - sum.remainder;
250 if (append_mode == 2 && mapbuf) {
251 for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) {
252 if (INFO_GTE(PROGRESS, 1))
253 show_progress(offset, total_size);
254 sum_update(map_ptr(mapbuf, offset, CHUNK_SIZE),
255 CHUNK_SIZE);
256 offset = j;
257 }
258 if (offset < sum.flength) {
259 int32 len = (int32)(sum.flength - offset);
260 if (INFO_GTE(PROGRESS, 1))
261 show_progress(offset, total_size);
262 sum_update(map_ptr(mapbuf, offset, len), len);
263 }
264 }
265 offset = sum.flength;
266 if (fd != -1 && (j = do_lseek(fd, offset, SEEK_SET)) != offset) {
267 rsyserr(FERROR_XFER, errno, "lseek of %s returned %s, not %s",
268 full_fname(fname), big_num(j), big_num(offset));
269 exit_cleanup(RERR_FILEIO);
270 }
271 }
272
273 while ((i = recv_token(f_in, &data)) != 0) {
274 if (INFO_GTE(PROGRESS, 1))
275 show_progress(offset, total_size);
276
277 if (allowed_lull)
278 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH | MSK_ACTIVE_RECEIVER);
279
280 if (i > 0) {
281 if (DEBUG_GTE(DELTASUM, 3)) {
282 rprintf(FINFO,"data recv %d at %s\n",
283 i, big_num(offset));
284 }
285
286 stats.literal_data += i;
287 cleanup_got_literal = 1;
288
289 sum_update(data, i);
290
291 if (fd != -1 && write_file(fd,data,i) != i)
292 goto report_write_error;
293 offset += i;
294 continue;
295 }
296
297 i = -(i+1);
298 offset2 = i * (OFF_T)sum.blength;
299 len = sum.blength;
300 if (i == (int)sum.count-1 && sum.remainder != 0)
301 len = sum.remainder;
302
303 stats.matched_data += len;
304
305 if (DEBUG_GTE(DELTASUM, 3)) {
306 rprintf(FINFO,
307 "chunk[%d] of size %ld at %s offset=%s%s\n",
308 i, (long)len, big_num(offset2), big_num(offset),
309 updating_basis_or_equiv && offset == offset2 ? " (seek)" : "");
310 }
311
312 if (mapbuf) {
313 map = map_ptr(mapbuf,offset2,len);
314
315 see_token(map, len);
316 sum_update(map, len);
317 }
318
319 if (updating_basis_or_equiv) {
320 if (offset == offset2 && fd != -1) {
321 OFF_T pos;
322 if (flush_write_file(fd) < 0)
323 goto report_write_error;
324 offset += len;
325 if ((pos = do_lseek(fd, len, SEEK_CUR)) != offset) {
326 rsyserr(FERROR_XFER, errno,
327 "lseek of %s returned %s, not %s",
328 full_fname(fname),
329 big_num(pos), big_num(offset));
330 exit_cleanup(RERR_FILEIO);
331 }
332 continue;
333 }
334 }
335 if (fd != -1 && map && write_file(fd, map, len) != (int)len)
336 goto report_write_error;
337 offset += len;
338 }
339
340 if (flush_write_file(fd) < 0)
341 goto report_write_error;
342
343#ifdef HAVE_FTRUNCATE
344 if (inplace && fd != -1 && do_ftruncate(fd, offset) < 0) {
345 rsyserr(FERROR_XFER, errno, "ftruncate failed on %s",
346 full_fname(fname));
347 }
348#endif
349
350 if (INFO_GTE(PROGRESS, 1))
351 end_progress(total_size);
352
353 if (fd != -1 && offset > 0 && sparse_end(fd, offset) != 0) {
354 report_write_error:
355 rsyserr(FERROR_XFER, errno, "write failed on %s",
356 full_fname(fname));
357 exit_cleanup(RERR_FILEIO);
358 }
359
360 if (sum_end(file_sum1) != checksum_len)
361 overflow_exit("checksum_len"); /* Impossible... */
362
363 if (mapbuf)
364 unmap_file(mapbuf);
365
366 read_buf(f_in, sender_file_sum, checksum_len);
367 if (DEBUG_GTE(DELTASUM, 2))
368 rprintf(FINFO,"got file_sum\n");
369 if (fd != -1 && memcmp(file_sum1, sender_file_sum, checksum_len) != 0)
370 return 0;
371 return 1;
372}
373
374
375static void discard_receive_data(int f_in, OFF_T length)
376{
377 receive_data(f_in, NULL, -1, 0, NULL, -1, length);
378}
379
380static void handle_delayed_updates(char *local_name)
381{
382 char *fname, *partialptr;
383 int ndx;
384
385 for (ndx = -1; (ndx = bitbag_next_bit(delayed_bits, ndx)) >= 0; ) {
386 struct file_struct *file = cur_flist->files[ndx];
387 fname = local_name ? local_name : f_name(file, NULL);
388 if ((partialptr = partial_dir_fname(fname)) != NULL) {
389 if (make_backups > 0 && !make_backup(fname, False))
390 continue;
391 if (DEBUG_GTE(RECV, 1)) {
392 rprintf(FINFO, "renaming %s to %s\n",
393 partialptr, fname);
394 }
395 /* We don't use robust_rename() here because the
396 * partial-dir must be on the same drive. */
397 if (do_rename(partialptr, fname) < 0) {
398 rsyserr(FERROR_XFER, errno,
399 "rename failed for %s (from %s)",
400 full_fname(fname), partialptr);
401 } else {
402 if (remove_source_files
403 || (preserve_hard_links && F_IS_HLINKED(file)))
404 send_msg_int(MSG_SUCCESS, ndx);
405 handle_partial_dir(partialptr, PDIR_DELETE);
406 }
407 }
408 }
409}
410
411static void no_batched_update(int ndx, BOOL is_redo)
412{
413 struct file_list *flist = flist_for_ndx(ndx, "no_batched_update");
414 struct file_struct *file = flist->files[ndx - flist->ndx_start];
415
416 rprintf(FERROR_XFER, "(No batched update for%s \"%s\")\n",
417 is_redo ? " resend of" : "", f_name(file, NULL));
418
419 if (inc_recurse && !dry_run)
420 send_msg_int(MSG_NO_SEND, ndx);
421}
422
423static int we_want_redo(int desired_ndx)
424{
425 static int redo_ndx = -1;
426
427 while (redo_ndx < desired_ndx) {
428 if (redo_ndx >= 0)
429 no_batched_update(redo_ndx, True);
430 if ((redo_ndx = flist_ndx_pop(&batch_redo_list)) < 0)
431 return 0;
432 }
433
434 if (redo_ndx == desired_ndx) {
435 redo_ndx = -1;
436 return 1;
437 }
438
439 return 0;
440}
441
442static int gen_wants_ndx(int desired_ndx, int flist_num)
443{
444 static int next_ndx = -1;
445 static int done_cnt = 0;
446 static BOOL got_eof = False;
447
448 if (got_eof)
449 return 0;
450
451 /* TODO: integrate gen-reading I/O into perform_io() so this is not needed? */
452 io_flush(FULL_FLUSH);
453
454 while (next_ndx < desired_ndx) {
455 if (inc_recurse && flist_num <= done_cnt)
456 return 0;
457 if (next_ndx >= 0)
458 no_batched_update(next_ndx, False);
459 if ((next_ndx = read_int(batch_gen_fd)) < 0) {
460 if (inc_recurse) {
461 done_cnt++;
462 continue;
463 }
464 got_eof = True;
465 return 0;
466 }
467 }
468
469 if (next_ndx == desired_ndx) {
470 next_ndx = -1;
471 return 1;
472 }
473
474 return 0;
475}
476
477/**
478 * main routine for receiver process.
479 *
480 * Receiver process runs on the same host as the generator process. */
481int recv_files(int f_in, int f_out, char *local_name)
482{
483 int fd1,fd2;
484 STRUCT_STAT st;
485 int iflags, xlen;
486 char *fname, fbuf[MAXPATHLEN];
487 char xname[MAXPATHLEN];
488 char fnametmp[MAXPATHLEN];
489 char *fnamecmp, *partialptr;
490 char fnamecmpbuf[MAXPATHLEN];
491 uchar fnamecmp_type;
492 struct file_struct *file;
493 int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i;
494 enum logcode log_code = log_before_transfer ? FLOG : FINFO;
495 int max_phase = protocol_version >= 29 ? 2 : 1;
496 int dflt_perms = (ACCESSPERMS & ~orig_umask);
497#ifdef SUPPORT_ACLS
498 const char *parent_dirname = "";
499#endif
500 int ndx, recv_ok;
501
502 if (DEBUG_GTE(RECV, 1))
503 rprintf(FINFO, "recv_files(%d) starting\n", cur_flist->used);
504
505 if (delay_updates)
506 delayed_bits = bitbag_create(cur_flist->used + 1);
507
508 while (1) {
509 cleanup_disable();
510
511 /* This call also sets cur_flist. */
512 ndx = read_ndx_and_attrs(f_in, f_out, &iflags, &fnamecmp_type,
513 xname, &xlen);
514 if (ndx == NDX_DONE) {
515 if (!am_server && INFO_GTE(PROGRESS, 2) && cur_flist) {
516 set_current_file_index(NULL, 0);
517 end_progress(0);
518 }
519 if (inc_recurse && first_flist) {
520 if (read_batch) {
521 ndx = first_flist->used + first_flist->ndx_start;
522 gen_wants_ndx(ndx, first_flist->flist_num);
523 }
524 flist_free(first_flist);
525 if (first_flist)
526 continue;
527 } else if (read_batch && first_flist) {
528 ndx = first_flist->used;
529 gen_wants_ndx(ndx, first_flist->flist_num);
530 }
531 if (++phase > max_phase)
532 break;
533 if (DEBUG_GTE(RECV, 1))
534 rprintf(FINFO, "recv_files phase=%d\n", phase);
535 if (phase == 2 && delay_updates)
536 handle_delayed_updates(local_name);
537 write_int(f_out, NDX_DONE);
538 continue;
539 }
540
541 if (ndx - cur_flist->ndx_start >= 0)
542 file = cur_flist->files[ndx - cur_flist->ndx_start];
543 else
544 file = dir_flist->files[cur_flist->parent_ndx];
545 fname = local_name ? local_name : f_name(file, fbuf);
546
547 if (DEBUG_GTE(RECV, 1))
548 rprintf(FINFO, "recv_files(%s)\n", fname);
549
550#ifdef SUPPORT_XATTRS
551 if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && do_xfers
552 && (protocol_version < 31 || !BITS_SET(iflags, ITEM_XNAME_FOLLOWS|ITEM_LOCAL_CHANGE)))
553 recv_xattr_request(file, f_in);
554#endif
555
556 if (!(iflags & ITEM_TRANSFER)) {
557 maybe_log_item(file, iflags, itemizing, xname);
558#ifdef SUPPORT_XATTRS
559 if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && do_xfers
560 && !BITS_SET(iflags, ITEM_XNAME_FOLLOWS|ITEM_LOCAL_CHANGE))
561 set_file_attrs(fname, file, NULL, fname, 0);
562#endif
563 if (iflags & ITEM_IS_NEW) {
564 stats.created_files++;
565 if (S_ISREG(file->mode)) {
566 /* Nothing further to count. */
567 } else if (S_ISDIR(file->mode))
568 stats.created_dirs++;
569#ifdef SUPPORT_LINKS
570 else if (S_ISLNK(file->mode))
571 stats.created_symlinks++;
572#endif
573 else if (IS_DEVICE(file->mode))
574 stats.created_devices++;
575 else
576 stats.created_specials++;
577 }
578 continue;
579 }
580 if (phase == 2) {
581 rprintf(FERROR,
582 "got transfer request in phase 2 [%s]\n",
583 who_am_i());
584 exit_cleanup(RERR_PROTOCOL);
585 }
586
587 if (file->flags & FLAG_FILE_SENT) {
588 if (csum_length == SHORT_SUM_LENGTH) {
589 if (keep_partial && !partial_dir)
590 make_backups = -make_backups; /* prevents double backup */
591 if (append_mode)
592 sparse_files = -sparse_files;
593 append_mode = -append_mode;
594 csum_length = SUM_LENGTH;
595 redoing = 1;
596 }
597 } else {
598 if (csum_length != SHORT_SUM_LENGTH) {
599 if (keep_partial && !partial_dir)
600 make_backups = -make_backups;
601 if (append_mode)
602 sparse_files = -sparse_files;
603 append_mode = -append_mode;
604 csum_length = SHORT_SUM_LENGTH;
605 redoing = 0;
606 }
607 if (iflags & ITEM_IS_NEW)
608 stats.created_files++;
609 }
610
611 if (!am_server && INFO_GTE(PROGRESS, 1))
612 set_current_file_index(file, ndx);
613 stats.xferred_files++;
614 stats.total_transferred_size += F_LENGTH(file);
615
616 cleanup_got_literal = 0;
617
618 if (daemon_filter_list.head
619 && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0) {
620 rprintf(FERROR, "attempt to hack rsync failed.\n");
621 exit_cleanup(RERR_PROTOCOL);
622 }
623
624 if (read_batch) {
625 int wanted = redoing
626 ? we_want_redo(ndx)
627 : gen_wants_ndx(ndx, cur_flist->flist_num);
628 if (!wanted) {
629 rprintf(FINFO,
630 "(Skipping batched update for%s \"%s\")\n",
631 redoing ? " resend of" : "",
632 fname);
633 discard_receive_data(f_in, F_LENGTH(file));
634 file->flags |= FLAG_FILE_SENT;
635 continue;
636 }
637 }
638
639 if (!log_before_transfer)
640 remember_initial_stats();
641
642 if (!do_xfers) { /* log the transfer */
643 log_item(FCLIENT, file, iflags, NULL);
644 if (read_batch)
645 discard_receive_data(f_in, F_LENGTH(file));
646 continue;
647 }
648 if (write_batch < 0) {
649 log_item(FCLIENT, file, iflags, NULL);
650 if (!am_server)
651 discard_receive_data(f_in, F_LENGTH(file));
652 continue;
653 }
654
655 partialptr = partial_dir ? partial_dir_fname(fname) : fname;
656
657 if (protocol_version >= 29) {
658 switch (fnamecmp_type) {
659 case FNAMECMP_FNAME:
660 fnamecmp = fname;
661 break;
662 case FNAMECMP_PARTIAL_DIR:
663 fnamecmp = partialptr;
664 break;
665 case FNAMECMP_BACKUP:
666 fnamecmp = get_backup_name(fname);
667 break;
668 case FNAMECMP_FUZZY:
669 if (file->dirname) {
670 pathjoin(fnamecmpbuf, MAXPATHLEN,
671 file->dirname, xname);
672 fnamecmp = fnamecmpbuf;
673 } else
674 fnamecmp = xname;
675 break;
676 default:
677 if (fnamecmp_type >= basis_dir_cnt) {
678 rprintf(FERROR,
679 "invalid basis_dir index: %d.\n",
680 fnamecmp_type);
681 exit_cleanup(RERR_PROTOCOL);
682 }
683 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
684 basis_dir[fnamecmp_type], fname);
685 fnamecmp = fnamecmpbuf;
686 break;
687 }
688 if (!fnamecmp || (daemon_filter_list.head
689 && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0)) {
690 fnamecmp = fname;
691 fnamecmp_type = FNAMECMP_FNAME;
692 }
693 } else {
694 /* Reminder: --inplace && --partial-dir are never
695 * enabled at the same time. */
696 if (inplace && make_backups > 0) {
697 if (!(fnamecmp = get_backup_name(fname)))
698 fnamecmp = fname;
699 else
700 fnamecmp_type = FNAMECMP_BACKUP;
701 } else if (partial_dir && partialptr)
702 fnamecmp = partialptr;
703 else
704 fnamecmp = fname;
705 }
706
707 /* open the file */
708 fd1 = do_open(fnamecmp, O_RDONLY, 0);
709
710 if (fd1 == -1 && protocol_version < 29) {
711 if (fnamecmp != fname) {
712 fnamecmp = fname;
713 fd1 = do_open(fnamecmp, O_RDONLY, 0);
714 }
715
716 if (fd1 == -1 && basis_dir[0]) {
717 /* pre-29 allowed only one alternate basis */
718 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
719 basis_dir[0], fname);
720 fnamecmp = fnamecmpbuf;
721 fd1 = do_open(fnamecmp, O_RDONLY, 0);
722 }
723 }
724
725 updating_basis_or_equiv = inplace
726 && (fnamecmp == fname || fnamecmp_type == FNAMECMP_BACKUP);
727
728 if (fd1 == -1) {
729 st.st_mode = 0;
730 st.st_size = 0;
731 } else if (do_fstat(fd1,&st) != 0) {
732 rsyserr(FERROR_XFER, errno, "fstat %s failed",
733 full_fname(fnamecmp));
734 discard_receive_data(f_in, F_LENGTH(file));
735 close(fd1);
736 if (inc_recurse)
737 send_msg_int(MSG_NO_SEND, ndx);
738 continue;
739 }
740
741 if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
742 /* this special handling for directories
743 * wouldn't be necessary if robust_rename()
744 * and the underlying robust_unlink could cope
745 * with directories
746 */
747 rprintf(FERROR_XFER, "recv_files: %s is a directory\n",
748 full_fname(fnamecmp));
749 discard_receive_data(f_in, F_LENGTH(file));
750 close(fd1);
751 if (inc_recurse)
752 send_msg_int(MSG_NO_SEND, ndx);
753 continue;
754 }
755
756 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
757 close(fd1);
758 fd1 = -1;
759 }
760
761 /* If we're not preserving permissions, change the file-list's
762 * mode based on the local permissions and some heuristics. */
763 if (!preserve_perms) {
764 int exists = fd1 != -1;
765#ifdef SUPPORT_ACLS
766 const char *dn = file->dirname ? file->dirname : ".";
767 if (parent_dirname != dn
768 && strcmp(parent_dirname, dn) != 0) {
769 dflt_perms = default_perms_for_dir(dn);
770 parent_dirname = dn;
771 }
772#endif
773 file->mode = dest_mode(file->mode, st.st_mode,
774 dflt_perms, exists);
775 }
776
777 /* We now check to see if we are writing the file "inplace" */
778 if (inplace) {
779 fd2 = do_open(fname, O_WRONLY|O_CREAT, 0600);
780 if (fd2 == -1) {
781 rsyserr(FERROR_XFER, errno, "open %s failed",
782 full_fname(fname));
783 }
784 } else {
785 fd2 = open_tmpfile(fnametmp, fname, file);
786 if (fd2 != -1)
787 cleanup_set(fnametmp, partialptr, file, fd1, fd2);
788 }
789
790 if (fd2 == -1) {
791 discard_receive_data(f_in, F_LENGTH(file));
792 if (fd1 != -1)
793 close(fd1);
794 if (inc_recurse)
795 send_msg_int(MSG_NO_SEND, ndx);
796 continue;
797 }
798
799 /* log the transfer */
800 if (log_before_transfer)
801 log_item(FCLIENT, file, iflags, NULL);
802 else if (!am_server && INFO_GTE(NAME, 1) && INFO_EQ(PROGRESS, 1))
803 rprintf(FINFO, "%s\n", fname);
804
805 /* recv file data */
806 recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size,
807 fname, fd2, F_LENGTH(file));
808
809 log_item(log_code, file, iflags, NULL);
810
811 if (fd1 != -1)
812 close(fd1);
813 if (close(fd2) < 0) {
814 rsyserr(FERROR, errno, "close failed on %s",
815 full_fname(fnametmp));
816 exit_cleanup(RERR_FILEIO);
817 }
818
819 if ((recv_ok && (!delay_updates || !partialptr)) || inplace) {
820 if (partialptr == fname)
821 partialptr = NULL;
822 if (!finish_transfer(fname, fnametmp, fnamecmp,
823 partialptr, file, recv_ok, 1))
824 recv_ok = -1;
825 else if (fnamecmp == partialptr) {
826 do_unlink(partialptr);
827 handle_partial_dir(partialptr, PDIR_DELETE);
828 }
829 } else if (keep_partial && partialptr) {
830 if (!handle_partial_dir(partialptr, PDIR_CREATE)) {
831 rprintf(FERROR,
832 "Unable to create partial-dir for %s -- discarding %s.\n",
833 local_name ? local_name : f_name(file, NULL),
834 recv_ok ? "completed file" : "partial file");
835 do_unlink(fnametmp);
836 recv_ok = -1;
837 } else if (!finish_transfer(partialptr, fnametmp, fnamecmp, NULL,
838 file, recv_ok, !partial_dir))
839 recv_ok = -1;
840 else if (delay_updates && recv_ok) {
841 bitbag_set_bit(delayed_bits, ndx);
842 recv_ok = 2;
843 } else
844 partialptr = NULL;
845 } else
846 do_unlink(fnametmp);
847
848 cleanup_disable();
849
850 if (read_batch)
851 file->flags |= FLAG_FILE_SENT;
852
853 switch (recv_ok) {
854 case 2:
855 break;
856 case 1:
857 if (remove_source_files || inc_recurse
858 || (preserve_hard_links && F_IS_HLINKED(file)))
859 send_msg_int(MSG_SUCCESS, ndx);
860 break;
861 case 0: {
862 enum logcode msgtype = redoing ? FERROR_XFER : FWARNING;
863 if (msgtype == FERROR_XFER || INFO_GTE(NAME, 1)) {
864 char *errstr, *redostr, *keptstr;
865 if (!(keep_partial && partialptr) && !inplace)
866 keptstr = "discarded";
867 else if (partial_dir)
868 keptstr = "put into partial-dir";
869 else
870 keptstr = "retained";
871 if (msgtype == FERROR_XFER) {
872 errstr = "ERROR";
873 redostr = "";
874 } else {
875 errstr = "WARNING";
876 redostr = read_batch ? " (may try again)"
877 : " (will try again)";
878 }
879 rprintf(msgtype,
880 "%s: %s failed verification -- update %s%s.\n",
881 errstr, local_name ? f_name(file, NULL) : fname,
882 keptstr, redostr);
883 }
884 if (!redoing) {
885 if (read_batch)
886 flist_ndx_push(&batch_redo_list, ndx);
887 send_msg_int(MSG_REDO, ndx);
888 file->flags |= FLAG_FILE_SENT;
889 } else if (inc_recurse)
890 send_msg_int(MSG_NO_SEND, ndx);
891 break;
892 }
893 case -1:
894 if (inc_recurse)
895 send_msg_int(MSG_NO_SEND, ndx);
896 break;
897 }
898 }
899 if (make_backups < 0)
900 make_backups = -make_backups;
901
902 if (phase == 2 && delay_updates) /* for protocol_version < 29 */
903 handle_delayed_updates(local_name);
904
905 if (DEBUG_GTE(RECV, 1))
906 rprintf(FINFO,"recv_files finished\n");
907
908 return 0;
909}