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) 2003-2013 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: #include "inums.h"
25: #include "ifuncs.h"
26:
27: extern int dry_run;
28: extern int do_xfers;
29: extern int stdout_format_has_i;
30: extern int logfile_format_has_i;
31: extern int am_root;
32: extern int am_server;
33: extern int am_daemon;
34: extern int inc_recurse;
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 delete_mode;
48: extern int delete_before;
49: extern int delete_during;
50: extern int delete_after;
51: extern int missing_args;
52: extern int msgdone_cnt;
53: extern int ignore_errors;
54: extern int remove_source_files;
55: extern int delay_updates;
56: extern int update_only;
57: extern int human_readable;
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 int compare_dest;
79: extern int copy_dest;
80: extern int link_dest;
81: extern int whole_file;
82: extern int list_only;
83: extern int read_batch;
84: extern int write_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 int skipped_deletes;
92: extern dev_t filesystem_dev;
93: extern mode_t orig_umask;
94: extern uid_t our_uid;
95: extern char *tmpdir;
96: extern char *basis_dir[MAX_BASIS_DIRS+1];
97: extern struct file_list *cur_flist, *first_flist, *dir_flist;
98: extern filter_rule_list filter_list, daemon_filter_list;
99:
100: int maybe_ATTRS_REPORT = 0;
101:
102: static dev_t dev_zero;
103: static int deldelay_size = 0, deldelay_cnt = 0;
104: static char *deldelay_buf = NULL;
105: static int deldelay_fd = -1;
106: static int loopchk_limit;
107: static int dir_tweaking;
108: static int symlink_timeset_failed_flags;
109: static int need_retouch_dir_times;
110: static int need_retouch_dir_perms;
111: static const char *solo_file = NULL;
112:
113: enum nonregtype {
114: TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
115: };
116:
117: /* Forward declarations. */
118: #ifdef SUPPORT_HARD_LINKS
119: static void handle_skipped_hlink(struct file_struct *file, int itemizing,
120: enum logcode code, int f_out);
121: #endif
122:
123: #define EARLY_DELAY_DONE_MSG() (!delay_updates)
124: #define EARLY_DELETE_DONE_MSG() (!(delete_during == 2 || delete_after))
125:
126: static int start_delete_delay_temp(void)
127: {
128: char fnametmp[MAXPATHLEN];
129: int save_dry_run = dry_run;
130:
131: dry_run = 0;
132: if (!get_tmpname(fnametmp, "deldelay", False)
133: || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
134: rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
135: inc_recurse ? "" : " -- switching to --delete-after");
136: delete_during = 0;
137: delete_after = !inc_recurse;
138: dry_run = save_dry_run;
139: return 0;
140: }
141: unlink(fnametmp);
142: dry_run = save_dry_run;
143: return 1;
144: }
145:
146: static int flush_delete_delay(void)
147: {
148: if (deldelay_fd < 0 && !start_delete_delay_temp())
149: return 0;
150: if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
151: rsyserr(FERROR, errno, "flush of delete-delay buffer");
152: delete_during = 0;
153: delete_after = !inc_recurse;
154: close(deldelay_fd);
155: return 0;
156: }
157: deldelay_cnt = 0;
158: return 1;
159: }
160:
161: static int remember_delete(struct file_struct *file, const char *fname, int flags)
162: {
163: int len;
164:
165: if (deldelay_cnt == deldelay_size && !flush_delete_delay())
166: return 0;
167:
168: if (flags & DEL_NO_UID_WRITE)
169: deldelay_buf[deldelay_cnt++] = '!';
170:
171: while (1) {
172: len = snprintf(deldelay_buf + deldelay_cnt,
173: deldelay_size - deldelay_cnt,
174: "%x %s%c",
175: (int)file->mode, fname, '\0');
176: if ((deldelay_cnt += len) <= deldelay_size)
177: break;
178: deldelay_cnt -= len;
179: if (!flush_delete_delay())
180: return 0;
181: }
182:
183: return 1;
184: }
185:
186: static int read_delay_line(char *buf, int *flags_p)
187: {
188: static int read_pos = 0;
189: int j, len, mode;
190: char *bp, *past_space;
191:
192: while (1) {
193: for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
194: if (j < deldelay_cnt)
195: break;
196: if (deldelay_fd < 0) {
197: if (j > read_pos)
198: goto invalid_data;
199: return -1;
200: }
201: deldelay_cnt -= read_pos;
202: if (deldelay_cnt == deldelay_size)
203: goto invalid_data;
204: if (deldelay_cnt && read_pos) {
205: memmove(deldelay_buf, deldelay_buf + read_pos,
206: deldelay_cnt);
207: }
208: len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
209: deldelay_size - deldelay_cnt);
210: if (len == 0) {
211: if (deldelay_cnt) {
212: rprintf(FERROR,
213: "ERROR: unexpected EOF in delete-delay file.\n");
214: }
215: return -1;
216: }
217: if (len < 0) {
218: rsyserr(FERROR, errno,
219: "reading delete-delay file");
220: return -1;
221: }
222: deldelay_cnt += len;
223: read_pos = 0;
224: }
225:
226: bp = deldelay_buf + read_pos;
227: if (*bp == '!') {
228: bp++;
229: *flags_p = DEL_NO_UID_WRITE;
230: } else
231: *flags_p = 0;
232:
233: if (sscanf(bp, "%x ", &mode) != 1) {
234: invalid_data:
235: rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
236: return -1;
237: }
238: past_space = strchr(bp, ' ') + 1;
239: len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
240: read_pos = j + 1;
241:
242: if (len > MAXPATHLEN) {
243: rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
244: return -1;
245: }
246:
247: /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
248: * instead of returning a pointer to our buffer. */
249: memcpy(buf, past_space, len);
250:
251: return mode;
252: }
253:
254: static void do_delayed_deletions(char *delbuf)
255: {
256: int mode, flags;
257:
258: if (deldelay_fd >= 0) {
259: if (deldelay_cnt && !flush_delete_delay())
260: return;
261: lseek(deldelay_fd, 0, 0);
262: }
263: while ((mode = read_delay_line(delbuf, &flags)) >= 0)
264: delete_item(delbuf, mode, flags | DEL_RECURSE);
265: if (deldelay_fd >= 0)
266: close(deldelay_fd);
267: }
268:
269: /* This function is used to implement per-directory deletion, and is used by
270: * all the --delete-WHEN options. Note that the fbuf pointer must point to a
271: * MAXPATHLEN buffer with the name of the directory in it (the functions we
272: * call will append names onto the end, but the old dir value will be restored
273: * on exit). */
274: static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
275: {
276: static int already_warned = 0;
277: struct file_list *dirlist;
278: char delbuf[MAXPATHLEN];
279: int dlen, i;
280:
281: if (!fbuf) {
282: change_local_filter_dir(NULL, 0, 0);
283: return;
284: }
285:
286: if (DEBUG_GTE(DEL, 2))
287: rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
288:
289: if (allowed_lull)
290: maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
291:
292: if (io_error & IOERR_GENERAL && !ignore_errors) {
293: if (already_warned)
294: return;
295: rprintf(FINFO,
296: "IO error encountered -- skipping file deletion\n");
297: already_warned = 1;
298: return;
299: }
300:
301: dlen = strlen(fbuf);
302: change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
303:
304: if (one_file_system) {
305: if (file->flags & FLAG_TOP_DIR)
306: filesystem_dev = *fs_dev;
307: else if (filesystem_dev != *fs_dev)
308: return;
309: }
310:
311: dirlist = get_dirlist(fbuf, dlen, 0);
312:
313: /* If an item in dirlist is not found in flist, delete it
314: * from the filesystem. */
315: for (i = dirlist->used; i--; ) {
316: struct file_struct *fp = dirlist->files[i];
317: if (!F_IS_ACTIVE(fp))
318: continue;
319: if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
320: if (INFO_GTE(MOUNT, 1))
321: rprintf(FINFO, "cannot delete mount point: %s\n",
322: f_name(fp, NULL));
323: continue;
324: }
325: /* Here we want to match regardless of file type. Replacement
326: * of a file with one of another type is handled separately by
327: * a delete_item call with a DEL_MAKE_ROOM flag. */
328: if (flist_find_ignore_dirness(cur_flist, fp) < 0) {
329: int flags = DEL_RECURSE;
330: if (!(fp->mode & S_IWUSR) && !am_root && fp->flags & FLAG_OWNED_BY_US)
331: flags |= DEL_NO_UID_WRITE;
332: f_name(fp, delbuf);
333: if (delete_during == 2) {
334: if (!remember_delete(fp, delbuf, flags))
335: break;
336: } else
337: delete_item(delbuf, fp->mode, flags);
338: }
339: }
340:
341: flist_free(dirlist);
342: }
343:
344: /* This deletes any files on the receiving side that are not present on the
345: * sending side. This is used by --delete-before and --delete-after. */
346: static void do_delete_pass(void)
347: {
348: char fbuf[MAXPATHLEN];
349: STRUCT_STAT st;
350: int j;
351:
352: /* dry_run is incremented when the destination doesn't exist yet. */
353: if (dry_run > 1 || list_only)
354: return;
355:
356: for (j = 0; j < cur_flist->used; j++) {
357: struct file_struct *file = cur_flist->sorted[j];
358:
359: f_name(file, fbuf);
360:
361: if (!(file->flags & FLAG_CONTENT_DIR)) {
362: change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
363: continue;
364: }
365:
366: if (DEBUG_GTE(DEL, 1) && file->flags & FLAG_TOP_DIR)
367: rprintf(FINFO, "deleting in %s\n", fbuf);
368:
369: if (link_stat(fbuf, &st, keep_dirlinks) < 0
370: || !S_ISDIR(st.st_mode))
371: continue;
372:
373: delete_in_dir(fbuf, file, &st.st_dev);
374: }
375: delete_in_dir(NULL, NULL, &dev_zero);
376:
377: if (INFO_GTE(FLIST, 2) && !am_server)
378: rprintf(FINFO, " \r");
379: }
380:
381: static inline int time_differs(struct file_struct *file, stat_x *sxp)
382: {
383: return cmp_time(sxp->st.st_mtime, file->modtime);
384: }
385:
386: static inline int perms_differ(struct file_struct *file, stat_x *sxp)
387: {
388: if (preserve_perms)
389: return !BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS);
390:
391: if (preserve_executability)
392: return (sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0);
393:
394: return 0;
395: }
396:
397: static inline int ownership_differs(struct file_struct *file, stat_x *sxp)
398: {
399: if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
400: return 1;
401:
402: if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
403: return 1;
404:
405: return 0;
406: }
407:
408: #ifdef SUPPORT_ACLS
409: static inline int acls_differ(const char *fname, struct file_struct *file, stat_x *sxp)
410: {
411: if (preserve_acls) {
412: if (!ACL_READY(*sxp))
413: get_acl(fname, sxp);
414: if (set_acl(NULL, file, sxp, file->mode))
415: return 1;
416: }
417:
418: return 0;
419: }
420: #endif
421:
422: #ifdef SUPPORT_XATTRS
423: static inline int xattrs_differ(const char *fname, struct file_struct *file, stat_x *sxp)
424: {
425: if (preserve_xattrs) {
426: if (!XATTR_READY(*sxp))
427: get_xattr(fname, sxp);
428: if (xattr_diff(file, sxp, 0))
429: return 1;
430: }
431:
432: return 0;
433: }
434: #endif
435:
436: int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
437: {
438: if (S_ISLNK(file->mode)) {
439: #ifdef CAN_SET_SYMLINK_TIMES
440: if (preserve_times & PRESERVE_LINK_TIMES && time_differs(file, sxp))
441: return 0;
442: #endif
443: #ifdef CAN_CHMOD_SYMLINK
444: if (perms_differ(file, sxp))
445: return 0;
446: #endif
447: #ifdef CAN_CHOWN_SYMLINK
448: if (ownership_differs(file, sxp))
449: return 0;
450: #endif
451: #if defined SUPPORT_ACLS && 0 /* no current symlink-ACL support */
452: if (acls_differ(fname, file, sxp))
453: return 0;
454: #endif
455: #if defined SUPPORT_XATTRS && !defined NO_SYMLINK_XATTRS
456: if (xattrs_differ(fname, file, sxp))
457: return 0;
458: #endif
459: } else {
460: if (preserve_times && time_differs(file, sxp))
461: return 0;
462: if (perms_differ(file, sxp))
463: return 0;
464: if (ownership_differs(file, sxp))
465: return 0;
466: #ifdef SUPPORT_ACLS
467: if (acls_differ(fname, file, sxp))
468: return 0;
469: #endif
470: #ifdef SUPPORT_XATTRS
471: if (xattrs_differ(fname, file, sxp))
472: return 0;
473: #endif
474: }
475:
476: return 1;
477: }
478:
479: void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
480: stat_x *sxp, int32 iflags, uchar fnamecmp_type,
481: const char *xname)
482: {
483: if (statret >= 0) { /* A from-dest-dir statret can == 1! */
484: int keep_time = !preserve_times ? 0
485: : S_ISDIR(file->mode) ? preserve_times & PRESERVE_DIR_TIMES
486: : S_ISLNK(file->mode) ? preserve_times & PRESERVE_LINK_TIMES
487: : 1;
488:
489: if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
490: iflags |= ITEM_REPORT_SIZE;
491: if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
492: if (iflags & ITEM_LOCAL_CHANGE)
493: iflags |= symlink_timeset_failed_flags;
494: } else if (keep_time
495: ? cmp_time(file->modtime, sxp->st.st_mtime) != 0
496: : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
497: && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
498: iflags |= ITEM_REPORT_TIME;
499: #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
500: if (S_ISLNK(file->mode)) {
501: ;
502: } else
503: #endif
504: if (preserve_perms) {
505: if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
506: iflags |= ITEM_REPORT_PERMS;
507: } else if (preserve_executability
508: && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
509: iflags |= ITEM_REPORT_PERMS;
510: if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
511: iflags |= ITEM_REPORT_OWNER;
512: if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
513: && sxp->st.st_gid != (gid_t)F_GROUP(file))
514: iflags |= ITEM_REPORT_GROUP;
515: #ifdef SUPPORT_ACLS
516: if (preserve_acls && !S_ISLNK(file->mode)) {
517: if (!ACL_READY(*sxp))
518: get_acl(fnamecmp, sxp);
519: if (set_acl(NULL, file, sxp, file->mode))
520: iflags |= ITEM_REPORT_ACL;
521: }
522: #endif
523: #ifdef SUPPORT_XATTRS
524: if (preserve_xattrs) {
525: if (!XATTR_READY(*sxp))
526: get_xattr(fnamecmp, sxp);
527: if (xattr_diff(file, sxp, 1))
528: iflags |= ITEM_REPORT_XATTR;
529: }
530: #endif
531: } else {
532: #ifdef SUPPORT_XATTRS
533: if (preserve_xattrs && xattr_diff(file, NULL, 1))
534: iflags |= ITEM_REPORT_XATTR;
535: #endif
536: iflags |= ITEM_IS_NEW;
537: }
538:
539: iflags &= 0xffff;
540: if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || INFO_GTE(NAME, 2)
541: || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
542: if (protocol_version >= 29) {
543: if (ndx >= 0)
544: write_ndx(sock_f_out, ndx);
545: write_shortint(sock_f_out, iflags);
546: if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
547: write_byte(sock_f_out, fnamecmp_type);
548: if (iflags & ITEM_XNAME_FOLLOWS)
549: write_vstring(sock_f_out, xname, strlen(xname));
550: #ifdef SUPPORT_XATTRS
551: if (preserve_xattrs && do_xfers
552: && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
553: int fd = iflags & ITEM_REPORT_XATTR
554: && (protocol_version < 31 || !BITS_SET(iflags, ITEM_XNAME_FOLLOWS|ITEM_LOCAL_CHANGE))
555: ? sock_f_out : -1;
556: send_xattr_request(NULL, file, fd);
557: }
558: #endif
559: } else if (ndx >= 0) {
560: enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
561: log_item(code, file, iflags, xname);
562: }
563: }
564: }
565:
566:
567: /* Perform our quick-check heuristic for determining if a file is unchanged. */
568: int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
569: {
570: if (st->st_size != F_LENGTH(file))
571: return 0;
572:
573: /* if always checksum is set then we use the checksum instead
574: of the file time to determine whether to sync */
575: if (always_checksum > 0 && S_ISREG(st->st_mode)) {
576: char sum[MAX_DIGEST_LEN];
577: file_checksum(fn, sum, st->st_size);
578: return memcmp(sum, F_SUM(file), checksum_len) == 0;
579: }
580:
581: if (size_only > 0)
582: return 1;
583:
584: if (ignore_times)
585: return 0;
586:
587: return cmp_time(st->st_mtime, file->modtime) == 0;
588: }
589:
590:
591: /*
592: * set (initialize) the size entries in the per-file sum_struct
593: * calculating dynamic block and checksum sizes.
594: *
595: * This is only called from generate_and_send_sums() but is a separate
596: * function to encapsulate the logic.
597: *
598: * The block size is a rounded square root of file length.
599: *
600: * The checksum size is determined according to:
601: * blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
602: * provided by Donovan Baarda which gives a probability of rsync
603: * algorithm corrupting data and falling back using the whole md4
604: * checksums.
605: *
606: * This might be made one of several selectable heuristics.
607: */
608: static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
609: {
610: int32 blength;
611: int s2length;
612: int64 l;
613:
614: if (len < 0) {
615: /* The file length overflowed our int64 var, so we can't process this file. */
616: sum->count = -1; /* indicate overflow error */
617: return;
618: }
619:
620: if (block_size)
621: blength = block_size;
622: else if (len <= BLOCK_SIZE * BLOCK_SIZE)
623: blength = BLOCK_SIZE;
624: else {
625: int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
626: int32 c;
627: int cnt;
628: for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
629: if (c < 0 || c >= max_blength)
630: blength = max_blength;
631: else {
632: blength = 0;
633: do {
634: blength |= c;
635: if (len < (int64)blength * blength)
636: blength &= ~c;
637: c >>= 1;
638: } while (c >= 8); /* round to multiple of 8 */
639: blength = MAX(blength, BLOCK_SIZE);
640: }
641: }
642:
643: if (protocol_version < 27) {
644: s2length = csum_length;
645: } else if (csum_length == SUM_LENGTH) {
646: s2length = SUM_LENGTH;
647: } else {
648: int32 c;
649: int b = BLOCKSUM_BIAS;
650: for (l = len; l >>= 1; b += 2) {}
651: for (c = blength; (c >>= 1) && b; b--) {}
652: /* add a bit, subtract rollsum, round up. */
653: s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
654: s2length = MAX(s2length, csum_length);
655: s2length = MIN(s2length, SUM_LENGTH);
656: }
657:
658: sum->flength = len;
659: sum->blength = blength;
660: sum->s2length = s2length;
661: sum->remainder = (int32)(len % blength);
662: sum->count = (int32)(l = (len / blength) + (sum->remainder != 0));
663:
664: if ((int64)sum->count != l)
665: sum->count = -1;
666:
667: if (sum->count && DEBUG_GTE(DELTASUM, 2)) {
668: rprintf(FINFO,
669: "count=%s rem=%ld blength=%ld s2length=%d flength=%s\n",
670: big_num(sum->count), (long)sum->remainder, (long)sum->blength,
671: sum->s2length, big_num(sum->flength));
672: }
673: }
674:
675:
676: /*
677: * Generate and send a stream of signatures/checksums that describe a buffer
678: *
679: * Generate approximately one checksum every block_len bytes.
680: */
681: static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
682: {
683: int32 i;
684: struct map_struct *mapbuf;
685: struct sum_struct sum;
686: OFF_T offset = 0;
687:
688: sum_sizes_sqroot(&sum, len);
689: if (sum.count < 0)
690: return -1;
691: write_sum_head(f_out, &sum);
692:
693: if (append_mode > 0 && f_copy < 0)
694: return 0;
695:
696: if (len > 0)
697: mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
698: else
699: mapbuf = NULL;
700:
701: for (i = 0; i < sum.count; i++) {
702: int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
703: char *map = map_ptr(mapbuf, offset, n1);
704: char sum2[SUM_LENGTH];
705: uint32 sum1;
706:
707: len -= n1;
708: offset += n1;
709:
710: if (f_copy >= 0) {
711: full_write(f_copy, map, n1);
712: if (append_mode > 0)
713: continue;
714: }
715:
716: sum1 = get_checksum1(map, n1);
717: get_checksum2(map, n1, sum2);
718:
719: if (DEBUG_GTE(DELTASUM, 3)) {
720: rprintf(FINFO,
721: "chunk[%s] offset=%s len=%ld sum1=%08lx\n",
722: big_num(i), big_num(offset - n1), (long)n1,
723: (unsigned long)sum1);
724: }
725: write_int(f_out, sum1);
726: write_buf(f_out, sum2, sum.s2length);
727: }
728:
729: if (mapbuf)
730: unmap_file(mapbuf);
731:
732: return 0;
733: }
734:
735:
736: /* Try to find a filename in the same dir as "fname" with a similar name. */
737: static struct file_struct *find_fuzzy(struct file_struct *file, struct file_list *dirlist_array[], uchar *fnamecmp_type_ptr)
738: {
739: int fname_len, fname_suf_len;
740: const char *fname_suf, *fname = file->basename;
741: uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
742: int i, j;
743: struct file_struct *lowest_fp = NULL;
744:
745: fname_len = strlen(fname);
746: fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
747:
748: /* Try to find an exact size+mtime match first. */
749: for (i = 0; i < fuzzy_basis; i++) {
750: struct file_list *dirlist = dirlist_array[i];
751:
752: if (!dirlist)
753: continue;
754:
755: for (j = 0; j < dirlist->used; j++) {
756: struct file_struct *fp = dirlist->files[j];
757:
758: if (!S_ISREG(fp->mode) || !F_LENGTH(fp) || fp->flags & FLAG_FILE_SENT)
759: continue;
760:
761: if (F_LENGTH(fp) == F_LENGTH(file) && cmp_time(fp->modtime, file->modtime) == 0) {
762: if (DEBUG_GTE(FUZZY, 2))
763: rprintf(FINFO, "fuzzy size/modtime match for %s\n", f_name(fp, NULL));
764: *fnamecmp_type_ptr = FNAMECMP_FUZZY + i;
765: return fp;
766: }
767:
768: }
769: }
770:
771: for (i = 0; i < fuzzy_basis; i++) {
772: struct file_list *dirlist = dirlist_array[i];
773:
774: if (!dirlist)
775: continue;
776:
777: for (j = 0; j < dirlist->used; j++) {
778: struct file_struct *fp = dirlist->files[j];
779: const char *suf, *name;
780: int len, suf_len;
781: uint32 dist;
782:
783: if (!S_ISREG(fp->mode) || !F_LENGTH(fp) || fp->flags & FLAG_FILE_SENT)
784: continue;
785:
786: name = fp->basename;
787: len = strlen(name);
788: suf = find_filename_suffix(name, len, &suf_len);
789:
790: dist = fuzzy_distance(name, len, fname, fname_len);
791: /* Add some extra weight to how well the suffixes match. */
792: dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len) * 10;
793: if (DEBUG_GTE(FUZZY, 2)) {
794: rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
795: f_name(fp, NULL), (int)(dist>>16), (int)(dist&0xFFFF));
796: }
797: if (dist <= lowest_dist) {
798: lowest_dist = dist;
799: lowest_fp = fp;
800: *fnamecmp_type_ptr = FNAMECMP_FUZZY + i;
801: }
802: }
803: }
804:
805: return lowest_fp;
806: }
807:
808: /* Copy a file found in our --copy-dest handling. */
809: static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
810: {
811: char buf[MAXPATHLEN];
812: const char *copy_to, *partialptr;
813: int save_preserve_xattrs = preserve_xattrs;
814: int ok, fd_w;
815:
816: if (inplace) {
817: /* Let copy_file open the destination in place. */
818: fd_w = -1;
819: copy_to = dest;
820: } else {
821: fd_w = open_tmpfile(buf, dest, file);
822: if (fd_w < 0)
823: return -1;
824: copy_to = buf;
825: }
826: cleanup_set(copy_to, NULL, NULL, -1, -1);
827: if (copy_file(src, copy_to, fd_w, file->mode) < 0) {
828: if (INFO_GTE(COPY, 1)) {
829: rsyserr(FINFO, errno, "copy_file %s => %s",
830: full_fname(src), copy_to);
831: }
832: /* Try to clean up. */
833: unlink(copy_to);
834: cleanup_disable();
835: return -1;
836: }
837: partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
838: preserve_xattrs = 0; /* xattrs were copied with file */
839: ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
840: preserve_xattrs = save_preserve_xattrs;
841: cleanup_disable();
842: return ok ? 0 : -1;
843: }
844:
845: /* This is only called for regular files. We return -2 if we've finished
846: * handling the file, -1 if no dest-linking occurred, or a non-negative
847: * value if we found an alternate basis file. If we're called with the
848: * find_exact_for_existing flag, the destination file already exists, so
849: * we only try to find an exact alt-dest match. In this case, the returns
850: * are only -2 & -1 (both as above). */
851: static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
852: char *cmpbuf, stat_x *sxp, int find_exact_for_existing,
853: int itemizing, enum logcode code)
854: {
855: STRUCT_STAT real_st = sxp->st;
856: int best_match = -1;
857: int match_level = 0;
858: int j = 0;
859:
860: do {
861: pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
862: if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
863: continue;
864: switch (match_level) {
865: case 0:
866: best_match = j;
867: match_level = 1;
868: /* FALL THROUGH */
869: case 1:
870: if (!unchanged_file(cmpbuf, file, &sxp->st))
871: continue;
872: best_match = j;
873: match_level = 2;
874: /* FALL THROUGH */
875: case 2:
876: if (!unchanged_attrs(cmpbuf, file, sxp)) {
877: free_stat_x(sxp);
878: continue;
879: }
880: best_match = j;
881: match_level = 3;
882: break;
883: }
884: break;
885: } while (basis_dir[++j] != NULL);
886:
887: if (!match_level)
888: return -1;
889:
890: if (j != best_match) {
891: j = best_match;
892: pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
893: if (link_stat(cmpbuf, &sxp->st, 0) < 0)
894: return -1;
895: }
896:
897: if (match_level == 3 && !copy_dest) {
898: if (find_exact_for_existing) {
899: if (link_dest && real_st.st_dev == sxp->st.st_dev && real_st.st_ino == sxp->st.st_ino)
900: return -1;
901: if (do_unlink(fname) < 0 && errno != ENOENT) {
902: sxp->st = real_st;
903: return -1;
904: }
905: }
906: #ifdef SUPPORT_HARD_LINKS
907: if (link_dest) {
908: if (!hard_link_one(file, fname, cmpbuf, 1))
909: goto try_a_copy;
910: if (preserve_hard_links && F_IS_HLINKED(file))
911: finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
912: if (!maybe_ATTRS_REPORT && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
913: itemize(cmpbuf, file, ndx, 1, sxp,
914: ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
915: 0, "");
916: }
917: } else
918: #endif
919: {
920: if (itemizing)
921: itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
922: }
923: if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
924: rprintf(FCLIENT, "%s is uptodate\n", fname);
925: return -2;
926: }
927:
928: if (find_exact_for_existing) {
929: sxp->st = real_st;
930: return -1;
931: }
932:
933: if (match_level >= 2) {
934: #ifdef SUPPORT_HARD_LINKS
935: try_a_copy: /* Copy the file locally. */
936: #endif
937: if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0) {
938: if (find_exact_for_existing) /* Can get here via hard-link failure */
939: sxp->st = real_st;
940: return -1;
941: }
942: if (itemizing)
943: itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
944: if (maybe_ATTRS_REPORT
945: && ((!itemizing && INFO_GTE(NAME, 1) && match_level == 2)
946: || (INFO_GTE(NAME, 2) && match_level == 3))) {
947: code = match_level == 3 ? FCLIENT : FINFO;
948: rprintf(code, "%s%s\n", fname,
949: match_level == 3 ? " is uptodate" : "");
950: }
951: #ifdef SUPPORT_HARD_LINKS
952: if (preserve_hard_links && F_IS_HLINKED(file))
953: finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
954: #endif
955: return -2;
956: }
957:
958: return FNAMECMP_BASIS_DIR_LOW + j;
959: }
960:
961: /* This is only called for non-regular files. We return -2 if we've finished
962: * handling the file, or -1 if no dest-linking occurred, or a non-negative
963: * value if we found an alternate basis file. */
964: static int try_dests_non(struct file_struct *file, char *fname, int ndx,
965: char *cmpbuf, stat_x *sxp, int itemizing,
966: enum logcode code)
967: {
968: int best_match = -1;
969: int match_level = 0;
970: enum nonregtype type;
971: uint32 *devp;
972: #ifdef SUPPORT_LINKS
973: char lnk[MAXPATHLEN];
974: int len;
975: #endif
976: int j = 0;
977:
978: #ifndef SUPPORT_LINKS
979: if (S_ISLNK(file->mode))
980: return -1;
981: #endif
982: if (S_ISDIR(file->mode)) {
983: type = TYPE_DIR;
984: } else if (IS_SPECIAL(file->mode))
985: type = TYPE_SPECIAL;
986: else if (IS_DEVICE(file->mode))
987: type = TYPE_DEVICE;
988: #ifdef SUPPORT_LINKS
989: else if (S_ISLNK(file->mode))
990: type = TYPE_SYMLINK;
991: #endif
992: else {
993: rprintf(FERROR,
994: "internal: try_dests_non() called with invalid mode (%o)\n",
995: (int)file->mode);
996: exit_cleanup(RERR_UNSUPPORTED);
997: }
998:
999: do {
1000: pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1001: if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1002: continue;
1003: switch (type) {
1004: case TYPE_DIR:
1005: if (!S_ISDIR(sxp->st.st_mode))
1006: continue;
1007: break;
1008: case TYPE_SPECIAL:
1009: if (!IS_SPECIAL(sxp->st.st_mode))
1010: continue;
1011: break;
1012: case TYPE_DEVICE:
1013: if (!IS_DEVICE(sxp->st.st_mode))
1014: continue;
1015: break;
1016: case TYPE_SYMLINK:
1017: #ifdef SUPPORT_LINKS
1018: if (!S_ISLNK(sxp->st.st_mode))
1019: continue;
1020: break;
1021: #else
1022: return -1;
1023: #endif
1024: }
1025: if (match_level < 1) {
1026: match_level = 1;
1027: best_match = j;
1028: }
1029: switch (type) {
1030: case TYPE_DIR:
1031: case TYPE_SPECIAL:
1032: break;
1033: case TYPE_DEVICE:
1034: devp = F_RDEV_P(file);
1035: if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1036: continue;
1037: break;
1038: case TYPE_SYMLINK:
1039: #ifdef SUPPORT_LINKS
1040: if ((len = do_readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1041: continue;
1042: lnk[len] = '\0';
1043: if (strcmp(lnk, F_SYMLINK(file)) != 0)
1044: continue;
1045: break;
1046: #else
1047: return -1;
1048: #endif
1049: }
1050: if (match_level < 2) {
1051: match_level = 2;
1052: best_match = j;
1053: }
1054: if (unchanged_attrs(cmpbuf, file, sxp)) {
1055: match_level = 3;
1056: best_match = j;
1057: break;
1058: }
1059: } while (basis_dir[++j] != NULL);
1060:
1061: if (!match_level)
1062: return -1;
1063:
1064: if (j != best_match) {
1065: j = best_match;
1066: pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1067: if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1068: return -1;
1069: }
1070:
1071: if (match_level == 3) {
1072: #ifdef SUPPORT_HARD_LINKS
1073: if (link_dest
1074: #ifndef CAN_HARDLINK_SYMLINK
1075: && !S_ISLNK(file->mode)
1076: #endif
1077: #ifndef CAN_HARDLINK_SPECIAL
1078: && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1079: #endif
1080: && !S_ISDIR(file->mode)) {
1081: if (do_link(cmpbuf, fname) < 0) {
1082: rsyserr(FERROR_XFER, errno,
1083: "failed to hard-link %s with %s",
1084: cmpbuf, fname);
1085: return j;
1086: }
1087: if (preserve_hard_links && F_IS_HLINKED(file))
1088: finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1089: } else
1090: #endif
1091: match_level = 2;
1092: if (itemizing && stdout_format_has_i
1093: && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1094: int chg = compare_dest && type != TYPE_DIR ? 0
1095: : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1096: char *lp = match_level == 3 ? "" : NULL;
1097: itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1098: }
1099: if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) {
1100: rprintf(FCLIENT, "%s%s is uptodate\n",
1101: fname, type == TYPE_DIR ? "/" : "");
1102: }
1103: return -2;
1104: }
1105:
1106: return j;
1107: }
1108:
1109: static void list_file_entry(struct file_struct *f)
1110: {
1111: char permbuf[PERMSTRING_SIZE];
1112: int64 len;
1113: int colwidth = human_readable ? 14 : 11;
1114:
1115: if (!F_IS_ACTIVE(f)) {
1116: /* this can happen if duplicate names were removed */
1117: return;
1118: }
1119:
1120: permstring(permbuf, f->mode);
1121: len = F_LENGTH(f);
1122:
1123: /* TODO: indicate '+' if the entry has an ACL. */
1124:
1125: #ifdef SUPPORT_LINKS
1126: if (preserve_links && S_ISLNK(f->mode)) {
1127: rprintf(FINFO, "%s %*s %s %s -> %s\n",
1128: permbuf, colwidth, human_num(len),
1129: timestring(f->modtime), f_name(f, NULL),
1130: F_SYMLINK(f));
1131: } else
1132: #endif
1133: if (missing_args == 2 && f->mode == 0) {
1134: rprintf(FINFO, "%-*s %s\n",
1135: colwidth + 31, "*missing",
1136: f_name(f, NULL));
1137: } else {
1138: rprintf(FINFO, "%s %*s %s %s\n",
1139: permbuf, colwidth, human_num(len),
1140: timestring(f->modtime), f_name(f, NULL));
1141: }
1142: }
1143:
1144: static int phase = 0;
1145: static int dflt_perms;
1146:
1147: static int implied_dirs_are_missing;
1148: /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1149: static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1150: {
1151: return F_DEPTH(file) > F_DEPTH(subtree)
1152: && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1153: }
1154:
1155: /* Acts on the indicated item in cur_flist whose name is fname. If a dir,
1156: * make sure it exists, and has the right permissions/timestamp info. For
1157: * all other non-regular files (symlinks, etc.) we create them here. For
1158: * regular files that have changed, we try to find a basis file and then
1159: * start sending checksums. The ndx is the file's unique index value.
1160: *
1161: * The fname parameter must point to a MAXPATHLEN buffer! (e.g it gets
1162: * passed to delete_item(), which can use it during a recursive delete.)
1163: *
1164: * Note that f_out is set to -1 when doing final directory-permission and
1165: * modification-time repair. */
1166: static void recv_generator(char *fname, struct file_struct *file, int ndx,
1167: int itemizing, enum logcode code, int f_out)
1168: {
1169: static const char *parent_dirname = "";
1170: /* Missing dir not created due to --dry-run; will still be scanned. */
1171: static struct file_struct *dry_missing_dir = NULL;
1172: /* Missing dir whose contents are skipped altogether due to
1173: * --ignore-non-existing, daemon exclude, or mkdir failure. */
1174: static struct file_struct *skip_dir = NULL;
1175: static struct file_list *fuzzy_dirlist[MAX_BASIS_DIRS+1];
1176: static int need_fuzzy_dirlist = 0;
1177: struct file_struct *fuzzy_file = NULL;
1178: int fd = -1, f_copy = -1;
1179: stat_x sx, real_sx;
1180: STRUCT_STAT partial_st;
1181: struct file_struct *back_file = NULL;
1182: int statret, real_ret, stat_errno;
1183: char *fnamecmp, *partialptr, *backupptr = NULL;
1184: char fnamecmpbuf[MAXPATHLEN];
1185: uchar fnamecmp_type;
1186: int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1187: int is_dir = !S_ISDIR(file->mode) ? 0
1188: : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1189: : 1;
1190:
1191: if (DEBUG_GTE(GENR, 1))
1192: rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1193:
1194: if (list_only) {
1195: if (is_dir < 0
1196: || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1197: return;
1198: list_file_entry(file);
1199: return;
1200: }
1201:
1202: if (skip_dir) {
1203: if (is_below(file, skip_dir)) {
1204: if (is_dir)
1205: file->flags |= FLAG_MISSING_DIR;
1206: #ifdef SUPPORT_HARD_LINKS
1207: else if (F_IS_HLINKED(file))
1208: handle_skipped_hlink(file, itemizing, code, f_out);
1209: #endif
1210: return;
1211: }
1212: skip_dir = NULL;
1213: }
1214:
1215: init_stat_x(&sx);
1216: if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1217: if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1218: if (is_dir < 0)
1219: return;
1220: #ifdef SUPPORT_HARD_LINKS
1221: if (F_IS_HLINKED(file))
1222: handle_skipped_hlink(file, itemizing, code, f_out);
1223: #endif
1224: rprintf(FERROR_XFER,
1225: "ERROR: daemon refused to receive %s \"%s\"\n",
1226: is_dir ? "directory" : "file", fname);
1227: if (is_dir)
1228: goto skipping_dir_contents;
1229: return;
1230: }
1231: }
1232:
1233: if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1234: int i;
1235: parent_is_dry_missing:
1236: for (i = 0; i < fuzzy_basis; i++) {
1237: if (fuzzy_dirlist[i]) {
1238: flist_free(fuzzy_dirlist[i]);
1239: fuzzy_dirlist[i] = NULL;
1240: }
1241: }
1242: parent_dirname = "";
1243: statret = -1;
1244: stat_errno = ENOENT;
1245: } else {
1246: const char *dn = file->dirname ? file->dirname : ".";
1247: dry_missing_dir = NULL;
1248: if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1249: if (relative_paths && !implied_dirs
1250: && do_stat(dn, &sx.st) < 0) {
1251: if (dry_run)
1252: goto parent_is_dry_missing;
1253: if (make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0) {
1254: rsyserr(FERROR_XFER, errno,
1255: "recv_generator: mkdir %s failed",
1256: full_fname(dn));
1257: }
1258: }
1259: if (fuzzy_basis) {
1260: int i;
1261: for (i = 0; i < fuzzy_basis; i++) {
1262: if (fuzzy_dirlist[i]) {
1263: flist_free(fuzzy_dirlist[i]);
1264: fuzzy_dirlist[i] = NULL;
1265: }
1266: }
1267: need_fuzzy_dirlist = 1;
1268: }
1269: #ifdef SUPPORT_ACLS
1270: if (!preserve_perms)
1271: dflt_perms = default_perms_for_dir(dn);
1272: #endif
1273: }
1274: parent_dirname = dn;
1275:
1276: if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1277: int i;
1278: strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1279: for (i = 0; i < fuzzy_basis; i++) {
1280: if (i && pathjoin(fnamecmpbuf, MAXPATHLEN, basis_dir[i-1], dn) >= MAXPATHLEN)
1281: continue;
1282: fuzzy_dirlist[i] = get_dirlist(fnamecmpbuf, -1, GDL_IGNORE_FILTER_RULES);
1283: if (fuzzy_dirlist[i] && fuzzy_dirlist[i]->used == 0) {
1284: flist_free(fuzzy_dirlist[i]);
1285: fuzzy_dirlist[i] = NULL;
1286: }
1287: }
1288: need_fuzzy_dirlist = 0;
1289: }
1290:
1291: statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1292: stat_errno = errno;
1293: }
1294:
1295: if (missing_args == 2 && file->mode == 0) {
1296: if (filter_list.head && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
1297: return;
1298: if (statret == 0)
1299: delete_item(fname, sx.st.st_mode, del_opts);
1300: return;
1301: }
1302:
1303: if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1304: if (is_dir) {
1305: if (is_dir < 0)
1306: return;
1307: skip_dir = file;
1308: file->flags |= FLAG_MISSING_DIR;
1309: }
1310: #ifdef SUPPORT_HARD_LINKS
1311: else if (F_IS_HLINKED(file))
1312: handle_skipped_hlink(file, itemizing, code, f_out);
1313: #endif
1314: if (INFO_GTE(SKIP, 1)) {
1315: rprintf(FINFO, "not creating new %s \"%s\"\n",
1316: is_dir ? "directory" : "file", fname);
1317: }
1318: return;
1319: }
1320:
1321: if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1322: && !am_root && sx.st.st_uid == our_uid)
1323: del_opts |= DEL_NO_UID_WRITE;
1324:
1325: if (ignore_existing > 0 && statret == 0
1326: && (!is_dir || !S_ISDIR(sx.st.st_mode))) {
1327: if (INFO_GTE(SKIP, 1) && is_dir >= 0)
1328: rprintf(FINFO, "%s exists\n", fname);
1329: #ifdef SUPPORT_HARD_LINKS
1330: if (F_IS_HLINKED(file))
1331: handle_skipped_hlink(file, itemizing, code, f_out);
1332: #endif
1333: goto cleanup;
1334: }
1335:
1336: fnamecmp = fname;
1337:
1338: if (is_dir) {
1339: mode_t added_perms;
1340: if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1341: goto cleanup;
1342: if (am_root < 0) {
1343: /* For --fake-super, the dir must be useable by the copying
1344: * user, just like it would be for root. */
1345: added_perms = S_IRUSR|S_IWUSR|S_IXUSR;
1346: } else
1347: added_perms = 0;
1348: if (is_dir < 0) {
1349: /* In inc_recurse mode we want to make sure any missing
1350: * directories get created while we're still processing
1351: * the parent dir (which allows us to touch the parent
1352: * dir's mtime right away). We will handle the dir in
1353: * full later (right before we handle its contents). */
1354: if (statret == 0
1355: && (S_ISDIR(sx.st.st_mode)
1356: || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1357: goto cleanup; /* Any errors get reported later. */
1358: if (do_mkdir(fname, (file->mode|added_perms) & 0700) == 0)
1359: file->flags |= FLAG_DIR_CREATED;
1360: goto cleanup;
1361: }
1362: /* The file to be received is a directory, so we need
1363: * to prepare appropriately. If there is already a
1364: * file of that name and it is *not* a directory, then
1365: * we need to delete it. If it doesn't exist, then
1366: * (perhaps recursively) create it. */
1367: if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1368: if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1369: goto skipping_dir_contents;
1370: statret = -1;
1371: }
1372: if (dry_run && statret != 0) {
1373: if (!dry_missing_dir)
1374: dry_missing_dir = file;
1375: file->flags |= FLAG_MISSING_DIR;
1376: }
1377: init_stat_x(&real_sx);
1378: real_sx.st = sx.st;
1379: real_ret = statret;
1380: if (file->flags & FLAG_DIR_CREATED)
1381: statret = -1;
1382: if (!preserve_perms) { /* See comment in non-dir code below. */
1383: file->mode = dest_mode(file->mode, sx.st.st_mode,
1384: dflt_perms, statret == 0);
1385: }
1386: if (statret != 0 && basis_dir[0] != NULL) {
1387: int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1388: itemizing, code);
1389: if (j == -2) {
1390: itemizing = 0;
1391: code = FNONE;
1392: statret = 1;
1393: } else if (j >= 0) {
1394: statret = 1;
1395: fnamecmp = fnamecmpbuf;
1396: }
1397: }
1398: if (itemizing && f_out != -1) {
1399: itemize(fnamecmp, file, ndx, statret, &sx,
1400: statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1401: }
1402: if (real_ret != 0 && do_mkdir(fname,file->mode|added_perms) < 0 && errno != EEXIST) {
1403: if (!relative_paths || errno != ENOENT
1404: || make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0
1405: || (do_mkdir(fname, file->mode|added_perms) < 0 && errno != EEXIST)) {
1406: rsyserr(FERROR_XFER, errno,
1407: "recv_generator: mkdir %s failed",
1408: full_fname(fname));
1409: skipping_dir_contents:
1410: rprintf(FERROR,
1411: "*** Skipping any contents from this failed directory ***\n");
1412: skip_dir = file;
1413: file->flags |= FLAG_MISSING_DIR;
1414: goto cleanup;
1415: }
1416: }
1417:
1418: #ifdef SUPPORT_XATTRS
1419: if (preserve_xattrs && statret == 1)
1420: copy_xattrs(fnamecmpbuf, fname);
1421: #endif
1422: if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1423: && INFO_GTE(NAME, 1) && code != FNONE && f_out != -1)
1424: rprintf(code, "%s/\n", fname);
1425:
1426: /* We need to ensure that the dirs in the transfer have both
1427: * readable and writable permissions during the time we are
1428: * putting files within them. This is then restored to the
1429: * former permissions after the transfer is done. */
1430: #ifdef HAVE_CHMOD
1431: if (!am_root && (file->mode & S_IRWXU) != S_IRWXU && dir_tweaking) {
1432: mode_t mode = file->mode | S_IRWXU;
1433: if (do_chmod(fname, mode) < 0) {
1434: rsyserr(FERROR_XFER, errno,
1435: "failed to modify permissions on %s",
1436: full_fname(fname));
1437: }
1438: need_retouch_dir_perms = 1;
1439: }
1440: #endif
1441:
1442: if (real_ret != 0 && one_file_system)
1443: real_sx.st.st_dev = filesystem_dev;
1444: if (inc_recurse) {
1445: if (one_file_system) {
1446: uint32 *devp = F_DIR_DEV_P(file);
1447: DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1448: DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1449: }
1450: }
1451: else if (delete_during && f_out != -1 && !phase
1452: && !(file->flags & FLAG_MISSING_DIR)) {
1453: if (file->flags & FLAG_CONTENT_DIR)
1454: delete_in_dir(fname, file, &real_sx.st.st_dev);
1455: else
1456: change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1457: }
1458: goto cleanup;
1459: }
1460:
1461: /* If we're not preserving permissions, change the file-list's
1462: * mode based on the local permissions and some heuristics. */
1463: if (!preserve_perms) {
1464: int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1465: file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1466: exists);
1467: }
1468:
1469: #ifdef SUPPORT_HARD_LINKS
1470: if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1471: && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1472: goto cleanup;
1473: #endif
1474:
1475: if (preserve_links && S_ISLNK(file->mode)) {
1476: #ifdef SUPPORT_LINKS
1477: const char *sl = F_SYMLINK(file);
1478: if (safe_symlinks && unsafe_symlink(sl, fname)) {
1479: if (INFO_GTE(NAME, 1)) {
1480: if (solo_file) {
1481: /* fname contains the destination path, but we
1482: * want to report the source path. */
1483: fname = f_name(file, NULL);
1484: }
1485: rprintf(FINFO,
1486: "ignoring unsafe symlink \"%s\" -> \"%s\"\n",
1487: fname, sl);
1488: }
1489: return;
1490: }
1491: if (statret == 0) {
1492: char lnk[MAXPATHLEN];
1493: int len;
1494:
1495: if (S_ISLNK(sx.st.st_mode)
1496: && (len = do_readlink(fname, lnk, MAXPATHLEN-1)) > 0
1497: && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1498: /* The link is pointing to the right place. */
1499: set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1500: if (itemizing)
1501: itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1502: #if defined SUPPORT_HARD_LINKS && defined CAN_HARDLINK_SYMLINK
1503: if (preserve_hard_links && F_IS_HLINKED(file))
1504: finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1505: #endif
1506: if (remove_source_files == 1)
1507: goto return_with_success;
1508: goto cleanup;
1509: }
1510: } else if (basis_dir[0] != NULL) {
1511: int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1512: itemizing, code);
1513: if (j == -2) {
1514: #ifndef CAN_HARDLINK_SYMLINK
1515: if (link_dest) {
1516: /* Resort to --copy-dest behavior. */
1517: } else
1518: #endif
1519: if (!copy_dest)
1520: goto cleanup;
1521: itemizing = 0;
1522: code = FNONE;
1523: } else if (j >= 0)
1524: statret = 1;
1525: }
1526: if (atomic_create(file, fname, sl, MAKEDEV(0, 0), &sx, statret == 0 ? DEL_FOR_SYMLINK : 0)) {
1527: set_file_attrs(fname, file, NULL, NULL, 0);
1528: if (itemizing) {
1529: if (statret == 0 && !S_ISLNK(sx.st.st_mode))
1530: statret = -1;
1531: itemize(fname, file, ndx, statret, &sx,
1532: ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1533: }
1534: if (code != FNONE && INFO_GTE(NAME, 1))
1535: rprintf(code, "%s -> %s\n", fname, sl);
1536: #ifdef SUPPORT_HARD_LINKS
1537: if (preserve_hard_links && F_IS_HLINKED(file))
1538: finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1539: #endif
1540: /* This does not check remove_source_files == 1
1541: * because this is one of the items that the old
1542: * --remove-sent-files option would remove. */
1543: if (remove_source_files)
1544: goto return_with_success;
1545: }
1546: #endif
1547: goto cleanup;
1548: }
1549:
1550: if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1551: || (preserve_specials && IS_SPECIAL(file->mode))) {
1552: dev_t rdev;
1553: int del_for_flag = 0;
1554: if (IS_DEVICE(file->mode)) {
1555: uint32 *devp = F_RDEV_P(file);
1556: rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1557: } else
1558: rdev = 0;
1559: if (statret == 0) {
1560: if (IS_DEVICE(file->mode)) {
1561: if (!IS_DEVICE(sx.st.st_mode))
1562: statret = -1;
1563: del_for_flag = DEL_FOR_DEVICE;
1564: } else {
1565: if (!IS_SPECIAL(sx.st.st_mode))
1566: statret = -1;
1567: del_for_flag = DEL_FOR_SPECIAL;
1568: }
1569: if (statret == 0
1570: && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1571: && (IS_SPECIAL(sx.st.st_mode) || sx.st.st_rdev == rdev)) {
1572: /* The device or special file is identical. */
1573: set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1574: if (itemizing)
1575: itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1576: #ifdef SUPPORT_HARD_LINKS
1577: if (preserve_hard_links && F_IS_HLINKED(file))
1578: finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1579: #endif
1580: if (remove_source_files == 1)
1581: goto return_with_success;
1582: goto cleanup;
1583: }
1584: } else if (basis_dir[0] != NULL) {
1585: int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1586: itemizing, code);
1587: if (j == -2) {
1588: #ifndef CAN_HARDLINK_SPECIAL
1589: if (link_dest) {
1590: /* Resort to --copy-dest behavior. */
1591: } else
1592: #endif
1593: if (!copy_dest)
1594: goto cleanup;
1595: itemizing = 0;
1596: code = FNONE;
1597: } else if (j >= 0)
1598: statret = 1;
1599: }
1600: if (DEBUG_GTE(GENR, 1)) {
1601: rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1602: fname, (int)file->mode,
1603: (long)major(rdev), (long)minor(rdev));
1604: }
1605: if (atomic_create(file, fname, NULL, rdev, &sx, del_for_flag)) {
1606: set_file_attrs(fname, file, NULL, NULL, 0);
1607: if (itemizing) {
1608: itemize(fname, file, ndx, statret, &sx,
1609: ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1610: }
1611: if (code != FNONE && INFO_GTE(NAME, 1))
1612: rprintf(code, "%s\n", fname);
1613: #ifdef SUPPORT_HARD_LINKS
1614: if (preserve_hard_links && F_IS_HLINKED(file))
1615: finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1616: #endif
1617: if (remove_source_files == 1)
1618: goto return_with_success;
1619: }
1620: goto cleanup;
1621: }
1622:
1623: if (!S_ISREG(file->mode)) {
1624: if (solo_file)
1625: fname = f_name(file, NULL);
1626: rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1627: goto cleanup;
1628: }
1629:
1630: if (max_size >= 0 && F_LENGTH(file) > max_size) {
1631: if (INFO_GTE(SKIP, 1)) {
1632: if (solo_file)
1633: fname = f_name(file, NULL);
1634: rprintf(FINFO, "%s is over max-size\n", fname);
1635: }
1636: goto cleanup;
1637: }
1638: if (min_size >= 0 && F_LENGTH(file) < min_size) {
1639: if (INFO_GTE(SKIP, 1)) {
1640: if (solo_file)
1641: fname = f_name(file, NULL);
1642: rprintf(FINFO, "%s is under min-size\n", fname);
1643: }
1644: goto cleanup;
1645: }
1646:
1647: if (update_only > 0 && statret == 0
1648: && cmp_time(sx.st.st_mtime, file->modtime) > 0) {
1649: if (INFO_GTE(SKIP, 1))
1650: rprintf(FINFO, "%s is newer\n", fname);
1651: #ifdef SUPPORT_HARD_LINKS
1652: if (F_IS_HLINKED(file))
1653: handle_skipped_hlink(file, itemizing, code, f_out);
1654: #endif
1655: goto cleanup;
1656: }
1657:
1658: fnamecmp_type = FNAMECMP_FNAME;
1659:
1660: if (statret == 0 && !S_ISREG(sx.st.st_mode)) {
1661: if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1662: goto cleanup;
1663: statret = -1;
1664: stat_errno = ENOENT;
1665: }
1666:
1667: if (basis_dir[0] != NULL && (statret != 0 || !copy_dest)) {
1668: int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1669: statret == 0, itemizing, code);
1670: if (j == -2) {
1671: if (remove_source_files == 1)
1672: goto return_with_success;
1673: goto cleanup;
1674: }
1675: if (j >= 0) {
1676: fnamecmp = fnamecmpbuf;
1677: fnamecmp_type = j;
1678: statret = 0;
1679: }
1680: }
1681:
1682: init_stat_x(&real_sx);
1683: real_sx.st = sx.st; /* Don't copy xattr/acl pointers, as they would free wrong. */
1684: real_ret = statret;
1685:
1686: if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1687: && link_stat(partialptr, &partial_st, 0) == 0
1688: && S_ISREG(partial_st.st_mode)) {
1689: if (statret != 0)
1690: goto prepare_to_open;
1691: } else
1692: partialptr = NULL;
1693:
1694: if (statret != 0 && fuzzy_basis) {
1695: /* Sets fnamecmp_type to FNAMECMP_FUZZY or above. */
1696: fuzzy_file = find_fuzzy(file, fuzzy_dirlist, &fnamecmp_type);
1697: if (fuzzy_file) {
1698: f_name(fuzzy_file, fnamecmpbuf);
1699: if (DEBUG_GTE(FUZZY, 1)) {
1700: rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1701: fname, fnamecmpbuf);
1702: }
1703: sx.st.st_size = F_LENGTH(fuzzy_file);
1704: statret = 0;
1705: fnamecmp = fnamecmpbuf;
1706: }
1707: }
1708:
1709: if (statret != 0) {
1710: #ifdef SUPPORT_HARD_LINKS
1711: if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1712: cur_flist->in_progress++;
1713: goto cleanup;
1714: }
1715: #endif
1716: if (stat_errno == ENOENT)
1717: goto notify_others;
1718: rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1719: full_fname(fname));
1720: goto cleanup;
1721: }
1722:
1723: if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1724: ;
1725: else if (fnamecmp_type == FNAMECMP_FUZZY)
1726: ;
1727: else if (unchanged_file(fnamecmp, file, &sx.st)) {
1728: if (partialptr) {
1729: do_unlink(partialptr);
1730: handle_partial_dir(partialptr, PDIR_DELETE);
1731: }
1732: set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1733: if (itemizing)
1734: itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1735: #ifdef SUPPORT_HARD_LINKS
1736: if (preserve_hard_links && F_IS_HLINKED(file))
1737: finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1738: #endif
1739: if (remove_source_files != 1)
1740: goto cleanup;
1741: return_with_success:
1742: if (!dry_run)
1743: send_msg_int(MSG_SUCCESS, ndx);
1744: goto cleanup;
1745: }
1746:
1747: if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1748: #ifdef SUPPORT_HARD_LINKS
1749: if (F_IS_HLINKED(file))
1750: handle_skipped_hlink(file, itemizing, code, f_out);
1751: #endif
1752: goto cleanup;
1753: }
1754:
1755: prepare_to_open:
1756: if (partialptr) {
1757: sx.st = partial_st;
1758: fnamecmp = partialptr;
1759: fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1760: statret = 0;
1761: }
1762:
1763: if (!do_xfers)
1764: goto notify_others;
1765:
1766: if (read_batch || whole_file) {
1767: if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1768: if (!(backupptr = get_backup_name(fname)))
1769: goto cleanup;
1770: if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1771: goto pretend_missing;
1772: if (copy_file(fname, backupptr, -1, back_file->mode) < 0) {
1773: unmake_file(back_file);
1774: back_file = NULL;
1775: goto cleanup;
1776: }
1777: }
1778: goto notify_others;
1779: }
1780:
1781: if (fuzzy_dirlist[0]) {
1782: int j = flist_find(fuzzy_dirlist[0], file);
1783: if (j >= 0) /* don't use changing file as future fuzzy basis */
1784: fuzzy_dirlist[0]->files[j]->flags |= FLAG_FILE_SENT;
1785: }
1786:
1787: /* open the file */
1788: if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1789: rsyserr(FERROR, errno, "failed to open %s, continuing",
1790: full_fname(fnamecmp));
1791: pretend_missing:
1792: /* pretend the file didn't exist */
1793: #ifdef SUPPORT_HARD_LINKS
1794: if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1795: cur_flist->in_progress++;
1796: goto cleanup;
1797: }
1798: #endif
1799: statret = real_ret = -1;
1800: goto notify_others;
1801: }
1802:
1803: if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1804: if (!(backupptr = get_backup_name(fname))) {
1805: close(fd);
1806: goto cleanup;
1807: }
1808: if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1809: close(fd);
1810: goto pretend_missing;
1811: }
1812: if (robust_unlink(backupptr) && errno != ENOENT) {
1813: rsyserr(FERROR_XFER, errno, "unlink %s",
1814: full_fname(backupptr));
1815: unmake_file(back_file);
1816: back_file = NULL;
1817: close(fd);
1818: goto cleanup;
1819: }
1820: if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1821: rsyserr(FERROR_XFER, errno, "open %s", full_fname(backupptr));
1822: unmake_file(back_file);
1823: back_file = NULL;
1824: close(fd);
1825: goto cleanup;
1826: }
1827: fnamecmp_type = FNAMECMP_BACKUP;
1828: }
1829:
1830: if (DEBUG_GTE(DELTASUM, 3)) {
1831: rprintf(FINFO, "gen mapped %s of size %s\n",
1832: fnamecmp, big_num(sx.st.st_size));
1833: }
1834:
1835: if (DEBUG_GTE(DELTASUM, 2))
1836: rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1837:
1838: notify_others:
1839: if (remove_source_files && !delay_updates && !phase && !dry_run)
1840: increment_active_files(ndx, itemizing, code);
1841: if (inc_recurse && (!dry_run || write_batch < 0))
1842: cur_flist->in_progress++;
1843: #ifdef SUPPORT_HARD_LINKS
1844: if (preserve_hard_links && F_IS_HLINKED(file))
1845: file->flags |= FLAG_FILE_SENT;
1846: #endif
1847: write_ndx(f_out, ndx);
1848: if (itemizing) {
1849: int iflags = ITEM_TRANSFER;
1850: if (always_checksum > 0)
1851: iflags |= ITEM_REPORT_CHANGE;
1852: if (fnamecmp_type != FNAMECMP_FNAME)
1853: iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1854: if (fnamecmp_type >= FNAMECMP_FUZZY)
1855: iflags |= ITEM_XNAME_FOLLOWS;
1856: itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1857: fuzzy_file ? fuzzy_file->basename : NULL);
1858: free_stat_x(&real_sx);
1859: }
1860:
1861: if (!do_xfers) {
1862: #ifdef SUPPORT_HARD_LINKS
1863: if (preserve_hard_links && F_IS_HLINKED(file))
1864: finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1865: #endif
1866: goto cleanup;
1867: }
1868: if (read_batch)
1869: goto cleanup;
1870:
1871: if (statret != 0 || whole_file)
1872: write_sum_head(f_out, NULL);
1873: else if (sx.st.st_size <= 0) {
1874: write_sum_head(f_out, NULL);
1875: close(fd);
1876: } else {
1877: if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
1878: rprintf(FWARNING,
1879: "WARNING: file is too large for checksum sending: %s\n",
1880: fnamecmp);
1881: write_sum_head(f_out, NULL);
1882: }
1883: close(fd);
1884: }
1885:
1886: cleanup:
1887: if (back_file) {
1888: int save_preserve_xattrs = preserve_xattrs;
1889: if (f_copy >= 0)
1890: close(f_copy);
1891: #ifdef SUPPORT_XATTRS
1892: if (preserve_xattrs) {
1893: copy_xattrs(fname, backupptr);
1894: preserve_xattrs = 0;
1895: }
1896: #endif
1897: set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1898: preserve_xattrs = save_preserve_xattrs;
1899: if (INFO_GTE(BACKUP, 1)) {
1900: rprintf(FINFO, "backed up %s to %s\n",
1901: fname, backupptr);
1902: }
1903: unmake_file(back_file);
1904: }
1905:
1906: free_stat_x(&sx);
1907: }
1908:
1909: /* If we are replacing an existing hard link, symlink, device, or special file,
1910: * create a temp-name item and rename it into place. Only a symlink or hard
1911: * link puts a non-NULL value into the lnk arg. Only a device puts a non-0
1912: * value into the rdev arg. Specify 0 for the del_for_flag if there is not a
1913: * file to replace. This returns 1 on success and 0 on failure. */
1914: int atomic_create(struct file_struct *file, char *fname, const char *lnk,
1915: dev_t rdev, stat_x *sxp, int del_for_flag)
1916: {
1917: char tmpname[MAXPATHLEN];
1918: const char *create_name;
1919: int skip_atomic, dir_in_the_way = del_for_flag && S_ISDIR(sxp->st.st_mode);
1920:
1921: if (!del_for_flag || dir_in_the_way || tmpdir || !get_tmpname(tmpname, fname, True))
1922: skip_atomic = 1;
1923: else
1924: skip_atomic = 0;
1925:
1926: if (del_for_flag) {
1927: if (make_backups > 0 && !dir_in_the_way) {
1928: if (!make_backup(fname, skip_atomic))
1929: return 0;
1930: } else if (skip_atomic) {
1931: int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1932: if (delete_item(fname, sxp->st.st_mode, del_opts | del_for_flag) != 0)
1933: return 0;
1934: }
1935: }
1936:
1937: create_name = skip_atomic ? fname : tmpname;
1938:
1939: if (lnk) {
1940: #ifdef SUPPORT_LINKS
1941: if (S_ISLNK(file->mode)
1942: #ifdef SUPPORT_HARD_LINKS /* The first symlink in a hard-linked cluster is always created. */
1943: && (!F_IS_HLINKED(file) || file->flags & FLAG_HLINK_FIRST)
1944: #endif
1945: ) {
1946: if (do_symlink(lnk, create_name) < 0) {
1947: rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
1948: full_fname(create_name), lnk);
1949: return 0;
1950: }
1951: } else
1952: #endif
1953: #ifdef SUPPORT_HARD_LINKS
1954: if (!hard_link_one(file, create_name, lnk, 0))
1955: return 0;
1956: #endif
1957: } else {
1958: if (do_mknod(create_name, file->mode, rdev) < 0) {
1959: rsyserr(FERROR_XFER, errno, "mknod %s failed",
1960: full_fname(create_name));
1961: return 0;
1962: }
1963: }
1964:
1965: if (!skip_atomic) {
1966: if (do_rename(tmpname, fname) < 0) {
1967: rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\" failed",
1968: full_fname(tmpname), full_fname(fname));
1969: do_unlink(tmpname);
1970: return 0;
1971: }
1972: }
1973:
1974: return 1;
1975: }
1976:
1977: #ifdef SUPPORT_HARD_LINKS
1978: static void handle_skipped_hlink(struct file_struct *file, int itemizing,
1979: enum logcode code, int f_out)
1980: {
1981: char fbuf[MAXPATHLEN];
1982: int new_last_ndx;
1983: struct file_list *save_flist = cur_flist;
1984:
1985: /* If we skip the last item in a chain of links and there was a
1986: * prior non-skipped hard-link waiting to finish, finish it now. */
1987: if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
1988: return;
1989:
1990: file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
1991: cur_flist->in_progress--; /* undo prior increment */
1992: f_name(file, fbuf);
1993: recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
1994:
1995: cur_flist = save_flist;
1996: }
1997: #endif
1998:
1999: static void touch_up_dirs(struct file_list *flist, int ndx)
2000: {
2001: static int counter = 0;
2002: struct file_struct *file;
2003: char *fname;
2004: BOOL fix_dir_perms;
2005: int i, start, end;
2006:
2007: if (ndx < 0) {
2008: start = 0;
2009: end = flist->used - 1;
2010: } else
2011: start = end = ndx;
2012:
2013: /* Fix any directory permissions that were modified during the
2014: * transfer and/or re-set any tweaked modified-time values. */
2015: for (i = start; i <= end; i++, counter++) {
2016: file = flist->files[i];
2017: if (!S_ISDIR(file->mode)
2018: || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
2019: continue;
2020: if (DEBUG_GTE(TIME, 2)) {
2021: fname = f_name(file, NULL);
2022: rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
2023: NS(fname), i);
2024: }
2025: /* Be sure not to retouch permissions with --fake-super. */
2026: fix_dir_perms = !am_root && !(file->mode & S_IWUSR);
2027: if (!F_IS_ACTIVE(file) || file->flags & FLAG_MISSING_DIR
2028: || !(need_retouch_dir_times || fix_dir_perms))
2029: continue;
2030: fname = f_name(file, NULL);
2031: if (fix_dir_perms)
2032: do_chmod(fname, file->mode);
2033: if (need_retouch_dir_times) {
2034: STRUCT_STAT st;
2035: if (link_stat(fname, &st, 0) == 0
2036: && cmp_time(st.st_mtime, file->modtime) != 0)
2037: set_modtime(fname, file->modtime, F_MOD_NSEC(file), file->mode);
2038: }
2039: if (counter >= loopchk_limit) {
2040: if (allowed_lull)
2041: maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
2042: else
2043: maybe_flush_socket(0);
2044: counter = 0;
2045: }
2046: }
2047: }
2048:
2049: void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
2050: {
2051: struct file_struct *file;
2052: struct file_list *flist;
2053: char fbuf[MAXPATHLEN];
2054: int ndx;
2055:
2056: while (1) {
2057: #ifdef SUPPORT_HARD_LINKS
2058: if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
2059: int send_failed = (ndx == -2);
2060: if (send_failed)
2061: ndx = get_hlink_num();
2062: flist = flist_for_ndx(ndx, "check_for_finished_files.1");
2063: file = flist->files[ndx - flist->ndx_start];
2064: assert(file->flags & FLAG_HLINKED);
2065: if (send_failed)
2066: handle_skipped_hlink(file, itemizing, code, sock_f_out);
2067: else
2068: finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
2069: flist->in_progress--;
2070: continue;
2071: }
2072: #endif
2073:
2074: if (check_redo && (ndx = get_redo_num()) != -1) {
2075: OFF_T save_max_size = max_size;
2076: OFF_T save_min_size = min_size;
2077: csum_length = SUM_LENGTH;
2078: max_size = -1;
2079: min_size = -1;
2080: ignore_existing = -ignore_existing;
2081: ignore_non_existing = -ignore_non_existing;
2082: update_only = -update_only;
2083: always_checksum = -always_checksum;
2084: size_only = -size_only;
2085: append_mode = -append_mode;
2086: make_backups = -make_backups; /* avoid dup backup w/inplace */
2087: ignore_times++;
2088:
2089: flist = cur_flist;
2090: cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
2091:
2092: file = cur_flist->files[ndx - cur_flist->ndx_start];
2093: if (solo_file)
2094: strlcpy(fbuf, solo_file, sizeof fbuf);
2095: else
2096: f_name(file, fbuf);
2097: recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
2098: cur_flist->to_redo--;
2099:
2100: cur_flist = flist;
2101:
2102: csum_length = SHORT_SUM_LENGTH;
2103: max_size = save_max_size;
2104: min_size = save_min_size;
2105: ignore_existing = -ignore_existing;
2106: ignore_non_existing = -ignore_non_existing;
2107: update_only = -update_only;
2108: always_checksum = -always_checksum;
2109: size_only = -size_only;
2110: append_mode = -append_mode;
2111: make_backups = -make_backups;
2112: ignore_times--;
2113: continue;
2114: }
2115:
2116: if (cur_flist == first_flist)
2117: break;
2118:
2119: /* We only get here if inc_recurse is enabled. */
2120: if (first_flist->in_progress || first_flist->to_redo)
2121: break;
2122:
2123: write_ndx(sock_f_out, NDX_DONE);
2124: if (!read_batch && !flist_eof) {
2125: int old_total = 0;
2126: for (flist = first_flist; flist != cur_flist; flist = flist->next)
2127: old_total += flist->used;
2128: maybe_flush_socket(!flist_eof && file_total - old_total < MIN_FILECNT_LOOKAHEAD/2);
2129: }
2130:
2131: if (delete_during == 2 || !dir_tweaking) {
2132: /* Skip directory touch-up. */
2133: } else if (first_flist->parent_ndx >= 0)
2134: touch_up_dirs(dir_flist, first_flist->parent_ndx);
2135:
2136: flist_free(first_flist); /* updates first_flist */
2137: }
2138: }
2139:
2140: void generate_files(int f_out, const char *local_name)
2141: {
2142: int i, ndx, next_loopchk = 0;
2143: char fbuf[MAXPATHLEN];
2144: int itemizing;
2145: enum logcode code;
2146: int save_info_flist = info_levels[INFO_FLIST];
2147: int save_info_progress = info_levels[INFO_PROGRESS];
2148:
2149: if (protocol_version >= 29) {
2150: itemizing = 1;
2151: maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2152: code = logfile_format_has_i ? FNONE : FLOG;
2153: } else if (am_daemon) {
2154: itemizing = logfile_format_has_i && do_xfers;
2155: maybe_ATTRS_REPORT = ATTRS_REPORT;
2156: code = itemizing || !do_xfers ? FCLIENT : FINFO;
2157: } else if (!am_server) {
2158: itemizing = stdout_format_has_i;
2159: maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2160: code = itemizing ? FNONE : FINFO;
2161: } else {
2162: itemizing = 0;
2163: maybe_ATTRS_REPORT = ATTRS_REPORT;
2164: code = FINFO;
2165: }
2166: solo_file = local_name;
2167: dir_tweaking = !(list_only || solo_file || dry_run);
2168: need_retouch_dir_times = preserve_times & PRESERVE_DIR_TIMES;
2169: loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2170: symlink_timeset_failed_flags = ITEM_REPORT_TIME
2171: | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2172: implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2173:
2174: if (DEBUG_GTE(GENR, 1))
2175: rprintf(FINFO, "generator starting pid=%d\n", (int)getpid());
2176:
2177: if (delete_before && !solo_file && cur_flist->used > 0)
2178: do_delete_pass();
2179: if (delete_during == 2) {
2180: deldelay_size = BIGPATHBUFLEN * 4;
2181: deldelay_buf = new_array(char, deldelay_size);
2182: if (!deldelay_buf)
2183: out_of_memory("delete-delay");
2184: }
2185: info_levels[INFO_FLIST] = info_levels[INFO_PROGRESS] = 0;
2186:
2187: if (append_mode > 0 || whole_file < 0)
2188: whole_file = 0;
2189: if (DEBUG_GTE(FLIST, 1)) {
2190: rprintf(FINFO, "delta-transmission %s\n",
2191: whole_file
2192: ? "disabled for local transfer or --whole-file"
2193: : "enabled");
2194: }
2195:
2196: dflt_perms = (ACCESSPERMS & ~orig_umask);
2197:
2198: do {
2199: #ifdef SUPPORT_HARD_LINKS
2200: if (preserve_hard_links && inc_recurse) {
2201: while (!flist_eof && file_total < MIN_FILECNT_LOOKAHEAD/2)
2202: wait_for_receiver();
2203: }
2204: #endif
2205:
2206: if (inc_recurse && cur_flist->parent_ndx >= 0) {
2207: struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2208: if (solo_file)
2209: strlcpy(fbuf, solo_file, sizeof fbuf);
2210: else
2211: f_name(fp, fbuf);
2212: ndx = cur_flist->ndx_start - 1;
2213: recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2214: if (delete_during && dry_run < 2 && !list_only
2215: && !(fp->flags & FLAG_MISSING_DIR)) {
2216: if (fp->flags & FLAG_CONTENT_DIR) {
2217: dev_t dirdev;
2218: if (one_file_system) {
2219: uint32 *devp = F_DIR_DEV_P(fp);
2220: dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2221: } else
2222: dirdev = MAKEDEV(0, 0);
2223: delete_in_dir(fbuf, fp, &dirdev);
2224: } else
2225: change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2226: }
2227: }
2228: for (i = cur_flist->low; i <= cur_flist->high; i++) {
2229: struct file_struct *file = cur_flist->sorted[i];
2230:
2231: if (!F_IS_ACTIVE(file))
2232: continue;
2233:
2234: if (unsort_ndx)
2235: ndx = F_NDX(file);
2236: else
2237: ndx = i + cur_flist->ndx_start;
2238:
2239: if (solo_file)
2240: strlcpy(fbuf, solo_file, sizeof fbuf);
2241: else
2242: f_name(file, fbuf);
2243: recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2244:
2245: check_for_finished_files(itemizing, code, 0);
2246:
2247: if (i + cur_flist->ndx_start >= next_loopchk) {
2248: if (allowed_lull)
2249: maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
2250: else
2251: maybe_flush_socket(0);
2252: next_loopchk += loopchk_limit;
2253: }
2254: }
2255:
2256: if (!inc_recurse) {
2257: write_ndx(f_out, NDX_DONE);
2258: break;
2259: }
2260:
2261: while (1) {
2262: check_for_finished_files(itemizing, code, 1);
2263: if (cur_flist->next || flist_eof)
2264: break;
2265: wait_for_receiver();
2266: }
2267: } while ((cur_flist = cur_flist->next) != NULL);
2268:
2269: if (delete_during)
2270: delete_in_dir(NULL, NULL, &dev_zero);
2271: phase++;
2272: if (DEBUG_GTE(GENR, 1))
2273: rprintf(FINFO, "generate_files phase=%d\n", phase);
2274:
2275: while (1) {
2276: check_for_finished_files(itemizing, code, 1);
2277: if (msgdone_cnt)
2278: break;
2279: wait_for_receiver();
2280: }
2281:
2282: phase++;
2283: if (DEBUG_GTE(GENR, 1))
2284: rprintf(FINFO, "generate_files phase=%d\n", phase);
2285:
2286: write_ndx(f_out, NDX_DONE);
2287:
2288: /* Reduce round-trip lag-time for a useless delay-updates phase. */
2289: if (protocol_version >= 29 && EARLY_DELAY_DONE_MSG())
2290: write_ndx(f_out, NDX_DONE);
2291:
2292: if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG()) {
2293: if ((INFO_GTE(STATS, 2) && (delete_mode || force_delete)) || read_batch)
2294: write_del_stats(f_out);
2295: if (EARLY_DELAY_DONE_MSG()) /* Can't send this before delay */
2296: write_ndx(f_out, NDX_DONE);
2297: }
2298:
2299: /* Read MSG_DONE for the redo phase (and any prior messages). */
2300: while (1) {
2301: check_for_finished_files(itemizing, code, 0);
2302: if (msgdone_cnt > 1)
2303: break;
2304: wait_for_receiver();
2305: }
2306:
2307: if (protocol_version >= 29) {
2308: phase++;
2309: if (DEBUG_GTE(GENR, 1))
2310: rprintf(FINFO, "generate_files phase=%d\n", phase);
2311: if (!EARLY_DELAY_DONE_MSG()) {
2312: write_ndx(f_out, NDX_DONE);
2313: if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG())
2314: write_ndx(f_out, NDX_DONE);
2315: }
2316: /* Read MSG_DONE for delay-updates phase & prior messages. */
2317: while (msgdone_cnt == 2)
2318: wait_for_receiver();
2319: }
2320:
2321: info_levels[INFO_FLIST] = save_info_flist;
2322: info_levels[INFO_PROGRESS] = save_info_progress;
2323:
2324: if (delete_during == 2)
2325: do_delayed_deletions(fbuf);
2326: if (delete_after && !solo_file && file_total > 0)
2327: do_delete_pass();
2328:
2329: if (max_delete >= 0 && skipped_deletes) {
2330: rprintf(FWARNING,
2331: "Deletions stopped due to --max-delete limit (%d skipped)\n",
2332: skipped_deletes);
2333: io_error |= IOERR_DEL_LIMIT;
2334: }
2335:
2336: if (protocol_version >= 31) {
2337: if (!EARLY_DELETE_DONE_MSG()) {
2338: if (INFO_GTE(STATS, 2) || read_batch)
2339: write_del_stats(f_out);
2340: write_ndx(f_out, NDX_DONE);
2341: }
2342:
2343: /* Read MSG_DONE for late-delete phase & prior messages. */
2344: while (msgdone_cnt == 3)
2345: wait_for_receiver();
2346: }
2347:
2348: if ((need_retouch_dir_perms || need_retouch_dir_times)
2349: && dir_tweaking && (!inc_recurse || delete_during == 2))
2350: touch_up_dirs(dir_flist, -1);
2351:
2352: if (DEBUG_GTE(GENR, 1))
2353: rprintf(FINFO, "generate_files finished\n");
2354: }
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