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) 2003-2013 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:
25: extern int dry_run;
26: extern int do_xfers;
27: extern int am_root;
28: extern int am_server;
29: extern int inc_recurse;
30: extern int log_before_transfer;
31: extern int stdout_format_has_i;
32: extern int logfile_format_has_i;
33: extern int csum_length;
34: extern int read_batch;
35: extern int write_batch;
36: extern int batch_gen_fd;
37: extern int protocol_version;
38: extern int relative_paths;
39: extern int preserve_hard_links;
40: extern int preserve_perms;
41: extern int preserve_xattrs;
42: extern int basis_dir_cnt;
43: extern int make_backups;
44: extern int cleanup_got_literal;
45: extern int remove_source_files;
46: extern int append_mode;
47: extern int sparse_files;
48: extern int preallocate_files;
49: extern int keep_partial;
50: extern int checksum_len;
51: extern int checksum_seed;
52: extern int inplace;
53: extern int allowed_lull;
54: extern int delay_updates;
55: extern mode_t orig_umask;
56: extern struct stats stats;
57: extern char *tmpdir;
58: extern char *partial_dir;
59: extern char *basis_dir[MAX_BASIS_DIRS+1];
60: extern char sender_file_sum[MAX_DIGEST_LEN];
61: extern struct file_list *cur_flist, *first_flist, *dir_flist;
62: extern filter_rule_list daemon_filter_list;
63:
64: static struct bitbag *delayed_bits = NULL;
65: static int phase = 0, redoing = 0;
66: static flist_ndx_list batch_redo_list;
67: /* We're either updating the basis file or an identical copy: */
68: static int updating_basis_or_equiv;
69:
70: #define TMPNAME_SUFFIX ".XXXXXX"
71: #define TMPNAME_SUFFIX_LEN ((int)sizeof TMPNAME_SUFFIX - 1)
72: #define MAX_UNIQUE_NUMBER 999999
73: #define MAX_UNIQUE_LOOP 100
74:
75: /* get_tmpname() - create a tmp filename for a given filename
76: *
77: * If a tmpdir is defined, use that as the directory to put it in. Otherwise,
78: * the tmp filename is in the same directory as the given name. Note that
79: * there may be no directory at all in the given name!
80: *
81: * The tmp filename is basically the given filename with a dot prepended, and
82: * .XXXXXX appended (for mkstemp() to put its unique gunk in). We take care
83: * to not exceed either the MAXPATHLEN or NAME_MAX, especially the last, as
84: * the basename basically becomes 8 characters longer. In such a case, the
85: * original name is shortened sufficiently to make it all fit.
86: *
87: * If the make_unique arg is True, the XXXXXX string is replaced with a unique
88: * string that doesn't exist at the time of the check. This is intended to be
89: * used for creating hard links, symlinks, devices, and special files, since
90: * normal files should be handled by mkstemp() for safety.
91: *
92: * Of course, the only reason the file is based on the original name is to
93: * make it easier to figure out what purpose a temp file is serving when a
94: * transfer is in progress. */
95: int get_tmpname(char *fnametmp, const char *fname, BOOL make_unique)
96: {
97: int maxname, length = 0;
98: const char *f;
99: char *suf;
100:
101: if (tmpdir) {
102: /* Note: this can't overflow, so the return value is safe */
103: length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
104: fnametmp[length++] = '/';
105: }
106:
107: if ((f = strrchr(fname, '/')) != NULL) {
108: ++f;
109: if (!tmpdir) {
110: length = f - fname;
111: /* copy up to and including the slash */
112: strlcpy(fnametmp, fname, length + 1);
113: }
114: } else
115: f = fname;
116: if (*f == '.') /* avoid an extra leading dot for OS X's sake */
117: f++;
118: fnametmp[length++] = '.';
119:
120: /* The maxname value is bufsize, and includes space for the '\0'.
121: * NAME_MAX needs an extra -1 for the name's leading dot. */
122: maxname = MIN(MAXPATHLEN - length - TMPNAME_SUFFIX_LEN,
123: NAME_MAX - 1 - TMPNAME_SUFFIX_LEN);
124:
125: if (maxname < 0) {
126: rprintf(FERROR_XFER, "temporary filename too long: %s\n", fname);
127: fnametmp[0] = '\0';
128: return 0;
129: }
130:
131: if (maxname) {
132: int added = strlcpy(fnametmp + length, f, maxname);
133: if (added >= maxname)
134: added = maxname - 1;
135: suf = fnametmp + length + added;
136:
137: /* Trim any dangling high-bit chars if the first-trimmed char (if any) is
138: * also a high-bit char, just in case we cut into a multi-byte sequence.
139: * We are guaranteed to stop because of the leading '.' we added. */
140: if ((int)f[added] & 0x80) {
141: while ((int)suf[-1] & 0x80)
142: suf--;
143: }
144: /* trim one trailing dot before our suffix's dot */
145: if (suf[-1] == '.')
146: suf--;
147: } else
148: suf = fnametmp + length - 1; /* overwrite the leading dot with suffix's dot */
149:
150: if (make_unique) {
151: static unsigned counter_limit;
152: unsigned counter;
153:
154: if (!counter_limit) {
155: counter_limit = (unsigned)getpid() + MAX_UNIQUE_LOOP;
156: if (counter_limit > MAX_UNIQUE_NUMBER || counter_limit < MAX_UNIQUE_LOOP)
157: counter_limit = MAX_UNIQUE_LOOP;
158: }
159: counter = counter_limit - MAX_UNIQUE_LOOP;
160:
161: /* This doesn't have to be very good because we don't need
162: * to worry about someone trying to guess the values: all
163: * a conflict will do is cause a device, special file, hard
164: * link, or symlink to fail to be created. Also: avoid
165: * using mktemp() due to gcc's annoying warning. */
166: while (1) {
167: snprintf(suf, TMPNAME_SUFFIX_LEN+1, ".%d", counter);
168: if (access(fnametmp, 0) < 0)
169: break;
170: if (++counter >= counter_limit)
171: return 0;
172: }
173: } else
174: memcpy(suf, TMPNAME_SUFFIX, TMPNAME_SUFFIX_LEN+1);
175:
176: return 1;
177: }
178:
179: /* Opens a temporary file for writing.
180: * Success: Writes name into fnametmp, returns fd.
181: * Failure: Clobbers fnametmp, returns -1.
182: * Calling cleanup_set() is the caller's job. */
183: int open_tmpfile(char *fnametmp, const char *fname, struct file_struct *file)
184: {
185: int fd;
186: mode_t added_perms;
187:
188: if (!get_tmpname(fnametmp, fname, False))
189: return -1;
190:
191: if (am_root < 0) {
192: /* For --fake-super, the file must be useable by the copying
193: * user, just like it would be for root. */
194: added_perms = S_IRUSR|S_IWUSR;
195: } else {
196: /* For a normal copy, we need to be able to tweak things like xattrs. */
197: added_perms = S_IWUSR;
198: }
199:
200: /* We initially set the perms without the setuid/setgid bits or group
201: * access to ensure that there is no race condition. They will be
202: * correctly updated after the right owner and group info is set.
203: * (Thanks to snabb@epipe.fi for pointing this out.) */
204: fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
205:
206: #if 0
207: /* In most cases parent directories will already exist because their
208: * information should have been previously transferred, but that may
209: * not be the case with -R */
210: if (fd == -1 && relative_paths && errno == ENOENT
211: && make_path(fnametmp, MKP_SKIP_SLASH | MKP_DROP_NAME) == 0) {
212: /* Get back to name with XXXXXX in it. */
213: get_tmpname(fnametmp, fname, False);
214: fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
215: }
216: #endif
217:
218: if (fd == -1) {
219: rsyserr(FERROR_XFER, errno, "mkstemp %s failed",
220: full_fname(fnametmp));
221: return -1;
222: }
223:
224: return fd;
225: }
226:
227: static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
228: const char *fname, int fd, OFF_T total_size)
229: {
230: static char file_sum1[MAX_DIGEST_LEN];
231: struct map_struct *mapbuf;
232: struct sum_struct sum;
233: int32 len;
234: OFF_T offset = 0;
235: OFF_T offset2;
236: char *data;
237: int32 i;
238: char *map = NULL;
239: #ifdef SUPPORT_PREALLOCATION
240: #ifdef PREALLOCATE_NEEDS_TRUNCATE
241: OFF_T preallocated_len = 0;
242: #endif
243:
244: if (preallocate_files && fd != -1 && total_size > 0 && (!inplace || total_size > size_r)) {
245: /* Try to preallocate enough space for file's eventual length. Can
246: * reduce fragmentation on filesystems like ext4, xfs, and NTFS. */
247: if (do_fallocate(fd, 0, total_size) == 0) {
248: #ifdef PREALLOCATE_NEEDS_TRUNCATE
249: preallocated_len = total_size;
250: #endif
251: } else
252: rsyserr(FWARNING, errno, "do_fallocate %s", full_fname(fname));
253: }
254: #endif
255:
256: read_sum_head(f_in, &sum);
257:
258: if (fd_r >= 0 && size_r > 0) {
259: int32 read_size = MAX(sum.blength * 2, 16*1024);
260: mapbuf = map_file(fd_r, size_r, read_size, sum.blength);
261: if (DEBUG_GTE(DELTASUM, 2)) {
262: rprintf(FINFO, "recv mapped %s of size %s\n",
263: fname_r, big_num(size_r));
264: }
265: } else
266: mapbuf = NULL;
267:
268: sum_init(checksum_seed);
269:
270: if (append_mode > 0) {
271: OFF_T j;
272: sum.flength = (OFF_T)sum.count * sum.blength;
273: if (sum.remainder)
274: sum.flength -= sum.blength - sum.remainder;
275: if (append_mode == 2 && mapbuf) {
276: for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) {
277: if (INFO_GTE(PROGRESS, 1))
278: show_progress(offset, total_size);
279: sum_update(map_ptr(mapbuf, offset, CHUNK_SIZE),
280: CHUNK_SIZE);
281: offset = j;
282: }
283: if (offset < sum.flength) {
284: int32 len = (int32)(sum.flength - offset);
285: if (INFO_GTE(PROGRESS, 1))
286: show_progress(offset, total_size);
287: sum_update(map_ptr(mapbuf, offset, len), len);
288: }
289: }
290: offset = sum.flength;
291: if (fd != -1 && (j = do_lseek(fd, offset, SEEK_SET)) != offset) {
292: rsyserr(FERROR_XFER, errno, "lseek of %s returned %s, not %s",
293: full_fname(fname), big_num(j), big_num(offset));
294: exit_cleanup(RERR_FILEIO);
295: }
296: }
297:
298: while ((i = recv_token(f_in, &data)) != 0) {
299: if (INFO_GTE(PROGRESS, 1))
300: show_progress(offset, total_size);
301:
302: if (allowed_lull)
303: maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH | MSK_ACTIVE_RECEIVER);
304:
305: if (i > 0) {
306: if (DEBUG_GTE(DELTASUM, 3)) {
307: rprintf(FINFO,"data recv %d at %s\n",
308: i, big_num(offset));
309: }
310:
311: stats.literal_data += i;
312: cleanup_got_literal = 1;
313:
314: sum_update(data, i);
315:
316: if (fd != -1 && write_file(fd,data,i) != i)
317: goto report_write_error;
318: offset += i;
319: continue;
320: }
321:
322: i = -(i+1);
323: offset2 = i * (OFF_T)sum.blength;
324: len = sum.blength;
325: if (i == (int)sum.count-1 && sum.remainder != 0)
326: len = sum.remainder;
327:
328: stats.matched_data += len;
329:
330: if (DEBUG_GTE(DELTASUM, 3)) {
331: rprintf(FINFO,
332: "chunk[%d] of size %ld at %s offset=%s%s\n",
333: i, (long)len, big_num(offset2), big_num(offset),
334: updating_basis_or_equiv && offset == offset2 ? " (seek)" : "");
335: }
336:
337: if (mapbuf) {
338: map = map_ptr(mapbuf,offset2,len);
339:
340: see_token(map, len);
341: sum_update(map, len);
342: }
343:
344: if (updating_basis_or_equiv) {
345: if (offset == offset2 && fd != -1) {
346: OFF_T pos;
347: if (flush_write_file(fd) < 0)
348: goto report_write_error;
349: offset += len;
350: if ((pos = do_lseek(fd, len, SEEK_CUR)) != offset) {
351: rsyserr(FERROR_XFER, errno,
352: "lseek of %s returned %s, not %s",
353: full_fname(fname),
354: big_num(pos), big_num(offset));
355: exit_cleanup(RERR_FILEIO);
356: }
357: continue;
358: }
359: }
360: if (fd != -1 && map && write_file(fd, map, len) != (int)len)
361: goto report_write_error;
362: offset += len;
363: }
364:
365: if (flush_write_file(fd) < 0)
366: goto report_write_error;
367:
368: #ifdef HAVE_FTRUNCATE
369: /* inplace: New data could be shorter than old data.
370: * preallocate_files: total_size could have been an overestimate.
371: * Cut off any extra preallocated zeros from dest file. */
372: if ((inplace
373: #ifdef PREALLOCATE_NEEDS_TRUNCATE
374: || preallocated_len > offset
375: #endif
376: ) && fd != -1 && do_ftruncate(fd, offset) < 0) {
377: rsyserr(FERROR_XFER, errno, "ftruncate failed on %s",
378: full_fname(fname));
379: }
380: #endif
381:
382: if (INFO_GTE(PROGRESS, 1))
383: end_progress(total_size);
384:
385: if (fd != -1 && offset > 0 && sparse_end(fd, offset) != 0) {
386: report_write_error:
387: rsyserr(FERROR_XFER, errno, "write failed on %s",
388: full_fname(fname));
389: exit_cleanup(RERR_FILEIO);
390: }
391:
392: if (sum_end(file_sum1) != checksum_len)
393: overflow_exit("checksum_len"); /* Impossible... */
394:
395: if (mapbuf)
396: unmap_file(mapbuf);
397:
398: read_buf(f_in, sender_file_sum, checksum_len);
399: if (DEBUG_GTE(DELTASUM, 2))
400: rprintf(FINFO,"got file_sum\n");
401: if (fd != -1 && memcmp(file_sum1, sender_file_sum, checksum_len) != 0)
402: return 0;
403: return 1;
404: }
405:
406:
407: static void discard_receive_data(int f_in, OFF_T length)
408: {
409: receive_data(f_in, NULL, -1, 0, NULL, -1, length);
410: }
411:
412: static void handle_delayed_updates(char *local_name)
413: {
414: char *fname, *partialptr;
415: int ndx;
416:
417: for (ndx = -1; (ndx = bitbag_next_bit(delayed_bits, ndx)) >= 0; ) {
418: struct file_struct *file = cur_flist->files[ndx];
419: fname = local_name ? local_name : f_name(file, NULL);
420: if ((partialptr = partial_dir_fname(fname)) != NULL) {
421: if (make_backups > 0 && !make_backup(fname, False))
422: continue;
423: if (DEBUG_GTE(RECV, 1)) {
424: rprintf(FINFO, "renaming %s to %s\n",
425: partialptr, fname);
426: }
427: /* We don't use robust_rename() here because the
428: * partial-dir must be on the same drive. */
429: if (do_rename(partialptr, fname) < 0) {
430: rsyserr(FERROR_XFER, errno,
431: "rename failed for %s (from %s)",
432: full_fname(fname), partialptr);
433: } else {
434: if (remove_source_files
435: || (preserve_hard_links && F_IS_HLINKED(file)))
436: send_msg_int(MSG_SUCCESS, ndx);
437: handle_partial_dir(partialptr, PDIR_DELETE);
438: }
439: }
440: }
441: }
442:
443: static void no_batched_update(int ndx, BOOL is_redo)
444: {
445: struct file_list *flist = flist_for_ndx(ndx, "no_batched_update");
446: struct file_struct *file = flist->files[ndx - flist->ndx_start];
447:
448: rprintf(FERROR_XFER, "(No batched update for%s \"%s\")\n",
449: is_redo ? " resend of" : "", f_name(file, NULL));
450:
451: if (inc_recurse && !dry_run)
452: send_msg_int(MSG_NO_SEND, ndx);
453: }
454:
455: static int we_want_redo(int desired_ndx)
456: {
457: static int redo_ndx = -1;
458:
459: while (redo_ndx < desired_ndx) {
460: if (redo_ndx >= 0)
461: no_batched_update(redo_ndx, True);
462: if ((redo_ndx = flist_ndx_pop(&batch_redo_list)) < 0)
463: return 0;
464: }
465:
466: if (redo_ndx == desired_ndx) {
467: redo_ndx = -1;
468: return 1;
469: }
470:
471: return 0;
472: }
473:
474: static int gen_wants_ndx(int desired_ndx, int flist_num)
475: {
476: static int next_ndx = -1;
477: static int done_cnt = 0;
478: static BOOL got_eof = False;
479:
480: if (got_eof)
481: return 0;
482:
483: /* TODO: integrate gen-reading I/O into perform_io() so this is not needed? */
484: io_flush(FULL_FLUSH);
485:
486: while (next_ndx < desired_ndx) {
487: if (inc_recurse && flist_num <= done_cnt)
488: return 0;
489: if (next_ndx >= 0)
490: no_batched_update(next_ndx, False);
491: if ((next_ndx = read_int(batch_gen_fd)) < 0) {
492: if (inc_recurse) {
493: done_cnt++;
494: continue;
495: }
496: got_eof = True;
497: return 0;
498: }
499: }
500:
501: if (next_ndx == desired_ndx) {
502: next_ndx = -1;
503: return 1;
504: }
505:
506: return 0;
507: }
508:
509: /**
510: * main routine for receiver process.
511: *
512: * Receiver process runs on the same host as the generator process. */
513: int recv_files(int f_in, int f_out, char *local_name)
514: {
515: int fd1,fd2;
516: STRUCT_STAT st;
517: int iflags, xlen;
518: char *fname, fbuf[MAXPATHLEN];
519: char xname[MAXPATHLEN];
520: char fnametmp[MAXPATHLEN];
521: char *fnamecmp, *partialptr;
522: char fnamecmpbuf[MAXPATHLEN];
523: uchar fnamecmp_type;
524: struct file_struct *file;
525: int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i;
526: enum logcode log_code = log_before_transfer ? FLOG : FINFO;
527: int max_phase = protocol_version >= 29 ? 2 : 1;
528: int dflt_perms = (ACCESSPERMS & ~orig_umask);
529: #ifdef SUPPORT_ACLS
530: const char *parent_dirname = "";
531: #endif
532: int ndx, recv_ok;
533:
534: if (DEBUG_GTE(RECV, 1))
535: rprintf(FINFO, "recv_files(%d) starting\n", cur_flist->used);
536:
537: if (delay_updates)
538: delayed_bits = bitbag_create(cur_flist->used + 1);
539:
540: while (1) {
541: cleanup_disable();
542:
543: /* This call also sets cur_flist. */
544: ndx = read_ndx_and_attrs(f_in, f_out, &iflags, &fnamecmp_type,
545: xname, &xlen);
546: if (ndx == NDX_DONE) {
547: if (!am_server && INFO_GTE(PROGRESS, 2) && cur_flist) {
548: set_current_file_index(NULL, 0);
549: end_progress(0);
550: }
551: if (inc_recurse && first_flist) {
552: if (read_batch) {
553: ndx = first_flist->used + first_flist->ndx_start;
554: gen_wants_ndx(ndx, first_flist->flist_num);
555: }
556: flist_free(first_flist);
557: if (first_flist)
558: continue;
559: } else if (read_batch && first_flist) {
560: ndx = first_flist->used;
561: gen_wants_ndx(ndx, first_flist->flist_num);
562: }
563: if (++phase > max_phase)
564: break;
565: if (DEBUG_GTE(RECV, 1))
566: rprintf(FINFO, "recv_files phase=%d\n", phase);
567: if (phase == 2 && delay_updates)
568: handle_delayed_updates(local_name);
569: write_int(f_out, NDX_DONE);
570: continue;
571: }
572:
573: if (ndx - cur_flist->ndx_start >= 0)
574: file = cur_flist->files[ndx - cur_flist->ndx_start];
575: else
576: file = dir_flist->files[cur_flist->parent_ndx];
577: fname = local_name ? local_name : f_name(file, fbuf);
578:
579: if (DEBUG_GTE(RECV, 1))
580: rprintf(FINFO, "recv_files(%s)\n", fname);
581:
582: #ifdef SUPPORT_XATTRS
583: if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && do_xfers
584: && (protocol_version < 31 || !BITS_SET(iflags, ITEM_XNAME_FOLLOWS|ITEM_LOCAL_CHANGE)))
585: recv_xattr_request(file, f_in);
586: #endif
587:
588: if (!(iflags & ITEM_TRANSFER)) {
589: maybe_log_item(file, iflags, itemizing, xname);
590: #ifdef SUPPORT_XATTRS
591: if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && do_xfers
592: && !BITS_SET(iflags, ITEM_XNAME_FOLLOWS|ITEM_LOCAL_CHANGE))
593: set_file_attrs(fname, file, NULL, fname, 0);
594: #endif
595: if (iflags & ITEM_IS_NEW) {
596: stats.created_files++;
597: if (S_ISREG(file->mode)) {
598: /* Nothing further to count. */
599: } else if (S_ISDIR(file->mode))
600: stats.created_dirs++;
601: #ifdef SUPPORT_LINKS
602: else if (S_ISLNK(file->mode))
603: stats.created_symlinks++;
604: #endif
605: else if (IS_DEVICE(file->mode))
606: stats.created_devices++;
607: else
608: stats.created_specials++;
609: }
610: continue;
611: }
612: if (phase == 2) {
613: rprintf(FERROR,
614: "got transfer request in phase 2 [%s]\n",
615: who_am_i());
616: exit_cleanup(RERR_PROTOCOL);
617: }
618:
619: if (file->flags & FLAG_FILE_SENT) {
620: if (csum_length == SHORT_SUM_LENGTH) {
621: if (keep_partial && !partial_dir)
622: make_backups = -make_backups; /* prevents double backup */
623: if (append_mode)
624: sparse_files = -sparse_files;
625: append_mode = -append_mode;
626: csum_length = SUM_LENGTH;
627: redoing = 1;
628: }
629: } else {
630: if (csum_length != SHORT_SUM_LENGTH) {
631: if (keep_partial && !partial_dir)
632: make_backups = -make_backups;
633: if (append_mode)
634: sparse_files = -sparse_files;
635: append_mode = -append_mode;
636: csum_length = SHORT_SUM_LENGTH;
637: redoing = 0;
638: }
639: if (iflags & ITEM_IS_NEW)
640: stats.created_files++;
641: }
642:
643: if (!am_server && INFO_GTE(PROGRESS, 1))
644: set_current_file_index(file, ndx);
645: stats.xferred_files++;
646: stats.total_transferred_size += F_LENGTH(file);
647:
648: cleanup_got_literal = 0;
649:
650: if (daemon_filter_list.head
651: && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0) {
652: rprintf(FERROR, "attempt to hack rsync failed.\n");
653: exit_cleanup(RERR_PROTOCOL);
654: }
655:
656: if (read_batch) {
657: int wanted = redoing
658: ? we_want_redo(ndx)
659: : gen_wants_ndx(ndx, cur_flist->flist_num);
660: if (!wanted) {
661: rprintf(FINFO,
662: "(Skipping batched update for%s \"%s\")\n",
663: redoing ? " resend of" : "",
664: fname);
665: discard_receive_data(f_in, F_LENGTH(file));
666: file->flags |= FLAG_FILE_SENT;
667: continue;
668: }
669: }
670:
671: if (!log_before_transfer)
672: remember_initial_stats();
673:
674: if (!do_xfers) { /* log the transfer */
675: log_item(FCLIENT, file, iflags, NULL);
676: if (read_batch)
677: discard_receive_data(f_in, F_LENGTH(file));
678: continue;
679: }
680: if (write_batch < 0) {
681: log_item(FCLIENT, file, iflags, NULL);
682: if (!am_server)
683: discard_receive_data(f_in, F_LENGTH(file));
684: if (inc_recurse)
685: send_msg_int(MSG_SUCCESS, ndx);
686: continue;
687: }
688:
689: partialptr = partial_dir ? partial_dir_fname(fname) : fname;
690:
691: if (protocol_version >= 29) {
692: switch (fnamecmp_type) {
693: case FNAMECMP_FNAME:
694: fnamecmp = fname;
695: break;
696: case FNAMECMP_PARTIAL_DIR:
697: fnamecmp = partialptr;
698: break;
699: case FNAMECMP_BACKUP:
700: fnamecmp = get_backup_name(fname);
701: break;
702: case FNAMECMP_FUZZY:
703: if (file->dirname) {
704: pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, file->dirname, xname);
705: fnamecmp = fnamecmpbuf;
706: } else
707: fnamecmp = xname;
708: break;
709: default:
710: if (fnamecmp_type > FNAMECMP_FUZZY && fnamecmp_type-FNAMECMP_FUZZY <= basis_dir_cnt) {
711: fnamecmp_type -= FNAMECMP_FUZZY + 1;
712: if (file->dirname) {
713: stringjoin(fnamecmpbuf, sizeof fnamecmpbuf,
714: basis_dir[fnamecmp_type], "/", file->dirname, "/", xname, NULL);
715: } else
716: pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, basis_dir[fnamecmp_type], xname);
717: } else if (fnamecmp_type >= basis_dir_cnt) {
718: rprintf(FERROR,
719: "invalid basis_dir index: %d.\n",
720: fnamecmp_type);
721: exit_cleanup(RERR_PROTOCOL);
722: } else
723: pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, basis_dir[fnamecmp_type], fname);
724: fnamecmp = fnamecmpbuf;
725: break;
726: }
727: if (!fnamecmp || (daemon_filter_list.head
728: && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0)) {
729: fnamecmp = fname;
730: fnamecmp_type = FNAMECMP_FNAME;
731: }
732: } else {
733: /* Reminder: --inplace && --partial-dir are never
734: * enabled at the same time. */
735: if (inplace && make_backups > 0) {
736: if (!(fnamecmp = get_backup_name(fname)))
737: fnamecmp = fname;
738: else
739: fnamecmp_type = FNAMECMP_BACKUP;
740: } else if (partial_dir && partialptr)
741: fnamecmp = partialptr;
742: else
743: fnamecmp = fname;
744: }
745:
746: /* open the file */
747: fd1 = do_open(fnamecmp, O_RDONLY, 0);
748:
749: if (fd1 == -1 && protocol_version < 29) {
750: if (fnamecmp != fname) {
751: fnamecmp = fname;
752: fd1 = do_open(fnamecmp, O_RDONLY, 0);
753: }
754:
755: if (fd1 == -1 && basis_dir[0]) {
756: /* pre-29 allowed only one alternate basis */
757: pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
758: basis_dir[0], fname);
759: fnamecmp = fnamecmpbuf;
760: fd1 = do_open(fnamecmp, O_RDONLY, 0);
761: }
762: }
763:
764: updating_basis_or_equiv = inplace
765: && (fnamecmp == fname || fnamecmp_type == FNAMECMP_BACKUP);
766:
767: if (fd1 == -1) {
768: st.st_mode = 0;
769: st.st_size = 0;
770: } else if (do_fstat(fd1,&st) != 0) {
771: rsyserr(FERROR_XFER, errno, "fstat %s failed",
772: full_fname(fnamecmp));
773: discard_receive_data(f_in, F_LENGTH(file));
774: close(fd1);
775: if (inc_recurse)
776: send_msg_int(MSG_NO_SEND, ndx);
777: continue;
778: }
779:
780: if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
781: /* this special handling for directories
782: * wouldn't be necessary if robust_rename()
783: * and the underlying robust_unlink could cope
784: * with directories
785: */
786: rprintf(FERROR_XFER, "recv_files: %s is a directory\n",
787: full_fname(fnamecmp));
788: discard_receive_data(f_in, F_LENGTH(file));
789: close(fd1);
790: if (inc_recurse)
791: send_msg_int(MSG_NO_SEND, ndx);
792: continue;
793: }
794:
795: if (fd1 != -1 && !S_ISREG(st.st_mode)) {
796: close(fd1);
797: fd1 = -1;
798: }
799:
800: /* If we're not preserving permissions, change the file-list's
801: * mode based on the local permissions and some heuristics. */
802: if (!preserve_perms) {
803: int exists = fd1 != -1;
804: #ifdef SUPPORT_ACLS
805: const char *dn = file->dirname ? file->dirname : ".";
806: if (parent_dirname != dn
807: && strcmp(parent_dirname, dn) != 0) {
808: dflt_perms = default_perms_for_dir(dn);
809: parent_dirname = dn;
810: }
811: #endif
812: file->mode = dest_mode(file->mode, st.st_mode,
813: dflt_perms, exists);
814: }
815:
816: /* We now check to see if we are writing the file "inplace" */
817: if (inplace) {
818: fd2 = do_open(fname, O_WRONLY|O_CREAT, 0600);
819: if (fd2 == -1) {
820: rsyserr(FERROR_XFER, errno, "open %s failed",
821: full_fname(fname));
822: } else if (updating_basis_or_equiv)
823: cleanup_set(NULL, NULL, file, fd1, fd2);
824: } else {
825: fd2 = open_tmpfile(fnametmp, fname, file);
826: if (fd2 != -1)
827: cleanup_set(fnametmp, partialptr, file, fd1, fd2);
828: }
829:
830: if (fd2 == -1) {
831: discard_receive_data(f_in, F_LENGTH(file));
832: if (fd1 != -1)
833: close(fd1);
834: if (inc_recurse)
835: send_msg_int(MSG_NO_SEND, ndx);
836: continue;
837: }
838:
839: /* log the transfer */
840: if (log_before_transfer)
841: log_item(FCLIENT, file, iflags, NULL);
842: else if (!am_server && INFO_GTE(NAME, 1) && INFO_EQ(PROGRESS, 1))
843: rprintf(FINFO, "%s\n", fname);
844:
845: /* recv file data */
846: recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size,
847: fname, fd2, F_LENGTH(file));
848:
849: log_item(log_code, file, iflags, NULL);
850:
851: if (fd1 != -1)
852: close(fd1);
853: if (close(fd2) < 0) {
854: rsyserr(FERROR, errno, "close failed on %s",
855: full_fname(fnametmp));
856: exit_cleanup(RERR_FILEIO);
857: }
858:
859: if ((recv_ok && (!delay_updates || !partialptr)) || inplace) {
860: if (partialptr == fname)
861: partialptr = NULL;
862: if (!finish_transfer(fname, fnametmp, fnamecmp,
863: partialptr, file, recv_ok, 1))
864: recv_ok = -1;
865: else if (fnamecmp == partialptr) {
866: do_unlink(partialptr);
867: handle_partial_dir(partialptr, PDIR_DELETE);
868: }
869: } else if (keep_partial && partialptr) {
870: if (!handle_partial_dir(partialptr, PDIR_CREATE)) {
871: rprintf(FERROR,
872: "Unable to create partial-dir for %s -- discarding %s.\n",
873: local_name ? local_name : f_name(file, NULL),
874: recv_ok ? "completed file" : "partial file");
875: do_unlink(fnametmp);
876: recv_ok = -1;
877: } else if (!finish_transfer(partialptr, fnametmp, fnamecmp, NULL,
878: file, recv_ok, !partial_dir))
879: recv_ok = -1;
880: else if (delay_updates && recv_ok) {
881: bitbag_set_bit(delayed_bits, ndx);
882: recv_ok = 2;
883: } else
884: partialptr = NULL;
885: } else
886: do_unlink(fnametmp);
887:
888: cleanup_disable();
889:
890: if (read_batch)
891: file->flags |= FLAG_FILE_SENT;
892:
893: switch (recv_ok) {
894: case 2:
895: break;
896: case 1:
897: if (remove_source_files || inc_recurse
898: || (preserve_hard_links && F_IS_HLINKED(file)))
899: send_msg_int(MSG_SUCCESS, ndx);
900: break;
901: case 0: {
902: enum logcode msgtype = redoing ? FERROR_XFER : FWARNING;
903: if (msgtype == FERROR_XFER || INFO_GTE(NAME, 1)) {
904: char *errstr, *redostr, *keptstr;
905: if (!(keep_partial && partialptr) && !inplace)
906: keptstr = "discarded";
907: else if (partial_dir)
908: keptstr = "put into partial-dir";
909: else
910: keptstr = "retained";
911: if (msgtype == FERROR_XFER) {
912: errstr = "ERROR";
913: redostr = "";
914: } else {
915: errstr = "WARNING";
916: redostr = read_batch ? " (may try again)"
917: : " (will try again)";
918: }
919: rprintf(msgtype,
920: "%s: %s failed verification -- update %s%s.\n",
921: errstr, local_name ? f_name(file, NULL) : fname,
922: keptstr, redostr);
923: }
924: if (!redoing) {
925: if (read_batch)
926: flist_ndx_push(&batch_redo_list, ndx);
927: send_msg_int(MSG_REDO, ndx);
928: file->flags |= FLAG_FILE_SENT;
929: } else if (inc_recurse)
930: send_msg_int(MSG_NO_SEND, ndx);
931: break;
932: }
933: case -1:
934: if (inc_recurse)
935: send_msg_int(MSG_NO_SEND, ndx);
936: break;
937: }
938: }
939: if (make_backups < 0)
940: make_backups = -make_backups;
941:
942: if (phase == 2 && delay_updates) /* for protocol_version < 29 */
943: handle_delayed_updates(local_name);
944:
945: if (DEBUG_GTE(RECV, 1))
946: rprintf(FINFO,"recv_files finished\n");
947:
948: return 0;
949: }
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