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1.1 misho 1: /*
2: * Routines that are exclusive to the generator process.
3: *
4: * Copyright (C) 1996-2000 Andrew Tridgell
5: * Copyright (C) 1996 Paul Mackerras
6: * Copyright (C) 2002 Martin Pool <mbp@samba.org>
7: * Copyright (C) 2003-2009 Wayne Davison
8: *
9: * This program is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 3 of the License, or
12: * (at your option) any later version.
13: *
14: * This program is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: * GNU General Public License for more details.
18: *
19: * You should have received a copy of the GNU General Public License along
20: * with this program; if not, visit the http://fsf.org website.
21: */
22:
23: #include "rsync.h"
24:
25: extern int verbose;
26: extern int dry_run;
27: extern int do_xfers;
28: extern int stdout_format_has_i;
29: extern int logfile_format_has_i;
30: extern int am_root;
31: extern int am_server;
32: extern int am_daemon;
33: extern int inc_recurse;
34: extern int do_progress;
35: extern int relative_paths;
36: extern int implied_dirs;
37: extern int keep_dirlinks;
38: extern int preserve_acls;
39: extern int preserve_xattrs;
40: extern int preserve_links;
41: extern int preserve_devices;
42: extern int preserve_specials;
43: extern int preserve_hard_links;
44: extern int preserve_executability;
45: extern int preserve_perms;
46: extern int preserve_times;
47: extern int delete_mode;
48: extern int delete_before;
49: extern int delete_during;
50: extern int delete_after;
51: extern int msgdone_cnt;
52: extern int ignore_errors;
53: extern int remove_source_files;
54: extern int delay_updates;
55: extern int update_only;
56: extern int ignore_existing;
57: extern int ignore_non_existing;
58: extern int inplace;
59: extern int append_mode;
60: extern int make_backups;
61: extern int csum_length;
62: extern int ignore_times;
63: extern int size_only;
64: extern OFF_T max_size;
65: extern OFF_T min_size;
66: extern int io_error;
67: extern int flist_eof;
68: extern int allowed_lull;
69: extern int sock_f_out;
70: extern int ignore_timeout;
71: extern int protocol_version;
72: extern int file_total;
73: extern int fuzzy_basis;
74: extern int always_checksum;
75: extern int checksum_len;
76: extern char *partial_dir;
77: extern char *basis_dir[MAX_BASIS_DIRS+1];
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 safe_symlinks;
85: extern long block_size; /* "long" because popt can't set an int32. */
86: extern int unsort_ndx;
87: extern int max_delete;
88: extern int force_delete;
89: extern int one_file_system;
90: extern struct stats stats;
91: extern dev_t filesystem_dev;
92: extern mode_t orig_umask;
93: extern uid_t our_uid;
94: extern char *backup_dir;
95: extern char *backup_suffix;
96: extern int backup_suffix_len;
97: extern struct file_list *cur_flist, *first_flist, *dir_flist;
98: extern struct filter_list_struct daemon_filter_list;
99:
100: int ignore_perishable = 0;
101: int non_perishable_cnt = 0;
102: int maybe_ATTRS_REPORT = 0;
103:
104: static dev_t dev_zero;
105: static int deletion_count = 0; /* used to implement --max-delete */
106: static int deldelay_size = 0, deldelay_cnt = 0;
107: static char *deldelay_buf = NULL;
108: static int deldelay_fd = -1;
109: static int loopchk_limit;
110: static int dir_tweaking;
111: static int symlink_timeset_failed_flags;
112: static int need_retouch_dir_times;
113: static int need_retouch_dir_perms;
114: static const char *solo_file = NULL;
115:
116: /* For calling delete_item() and delete_dir_contents(). */
117: #define DEL_NO_UID_WRITE (1<<0) /* file/dir has our uid w/o write perm */
118: #define DEL_RECURSE (1<<1) /* if dir, delete all contents */
119: #define DEL_DIR_IS_EMPTY (1<<2) /* internal delete_FUNCTIONS use only */
120: #define DEL_FOR_FILE (1<<3) /* making room for a replacement file */
121: #define DEL_FOR_DIR (1<<4) /* making room for a replacement dir */
122: #define DEL_FOR_SYMLINK (1<<5) /* making room for a replacement symlink */
123: #define DEL_FOR_DEVICE (1<<6) /* making room for a replacement device */
124: #define DEL_FOR_SPECIAL (1<<7) /* making room for a replacement special */
125:
126: #define DEL_MAKE_ROOM (DEL_FOR_FILE|DEL_FOR_DIR|DEL_FOR_SYMLINK|DEL_FOR_DEVICE|DEL_FOR_SPECIAL)
127:
128: enum nonregtype {
129: TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
130: };
131:
132: enum delret {
133: DR_SUCCESS = 0, DR_FAILURE, DR_AT_LIMIT, DR_NOT_EMPTY
134: };
135:
136: /* Forward declarations. */
137: static enum delret delete_dir_contents(char *fname, uint16 flags);
138: #ifdef SUPPORT_HARD_LINKS
139: static void handle_skipped_hlink(struct file_struct *file, int itemizing,
140: enum logcode code, int f_out);
141: #endif
142:
143: static int is_backup_file(char *fn)
144: {
145: int k = strlen(fn) - backup_suffix_len;
146: return k > 0 && strcmp(fn+k, backup_suffix) == 0;
147: }
148:
149: /* Delete a file or directory. If DEL_RECURSE is set in the flags, this will
150: * delete recursively.
151: *
152: * Note that fbuf must point to a MAXPATHLEN buffer if the mode indicates it's
153: * a directory! (The buffer is used for recursion, but returned unchanged.)
154: */
155: static enum delret delete_item(char *fbuf, uint16 mode, uint16 flags)
156: {
157: enum delret ret;
158: char *what;
159: int ok;
160:
161: if (verbose > 2) {
162: rprintf(FINFO, "delete_item(%s) mode=%o flags=%d\n",
163: fbuf, (int)mode, (int)flags);
164: }
165:
166: if (flags & DEL_NO_UID_WRITE)
167: do_chmod(fbuf, mode | S_IWUSR);
168:
169: if (S_ISDIR(mode) && !(flags & DEL_DIR_IS_EMPTY)) {
170: /* This only happens on the first call to delete_item() since
171: * delete_dir_contents() always calls us w/DEL_DIR_IS_EMPTY. */
172: ignore_perishable = 1;
173: /* If DEL_RECURSE is not set, this just reports emptiness. */
174: ret = delete_dir_contents(fbuf, flags);
175: ignore_perishable = 0;
176: if (ret == DR_NOT_EMPTY || ret == DR_AT_LIMIT)
177: goto check_ret;
178: /* OK: try to delete the directory. */
179: }
180:
181: if (!(flags & DEL_MAKE_ROOM) && max_delete >= 0 && ++deletion_count > max_delete)
182: return DR_AT_LIMIT;
183:
184: if (S_ISDIR(mode)) {
185: what = "rmdir";
186: ok = do_rmdir(fbuf) == 0;
187: } else if (make_backups > 0 && (backup_dir || !is_backup_file(fbuf))) {
188: what = "make_backup";
189: ok = make_backup(fbuf);
190: } else {
191: what = "unlink";
192: ok = robust_unlink(fbuf) == 0;
193: }
194:
195: if (ok) {
196: if (!(flags & DEL_MAKE_ROOM))
197: log_delete(fbuf, mode);
198: ret = DR_SUCCESS;
199: } else {
200: if (S_ISDIR(mode) && errno == ENOTEMPTY) {
201: rprintf(FINFO, "cannot delete non-empty directory: %s\n",
202: fbuf);
203: ret = DR_NOT_EMPTY;
204: } else if (errno != ENOENT) {
205: rsyserr(FERROR, errno, "delete_file: %s(%s) failed",
206: what, fbuf);
207: ret = DR_FAILURE;
208: } else {
209: deletion_count--;
210: ret = DR_SUCCESS;
211: }
212: }
213:
214: check_ret:
215: if (ret != DR_SUCCESS && flags & DEL_MAKE_ROOM) {
216: const char *desc;
217: switch (flags & DEL_MAKE_ROOM) {
218: case DEL_FOR_FILE: desc = "regular file"; break;
219: case DEL_FOR_DIR: desc = "directory"; break;
220: case DEL_FOR_SYMLINK: desc = "symlink"; break;
221: case DEL_FOR_DEVICE: desc = "device file"; break;
222: case DEL_FOR_SPECIAL: desc = "special file"; break;
223: default: exit_cleanup(RERR_UNSUPPORTED); /* IMPOSSIBLE */
224: }
225: rprintf(FERROR_XFER, "could not make way for new %s: %s\n",
226: desc, fbuf);
227: }
228: return ret;
229: }
230:
231: /* The directory is about to be deleted: if DEL_RECURSE is given, delete all
232: * its contents, otherwise just checks for content. Returns DR_SUCCESS or
233: * DR_NOT_EMPTY. Note that fname must point to a MAXPATHLEN buffer! (The
234: * buffer is used for recursion, but returned unchanged.)
235: */
236: static enum delret delete_dir_contents(char *fname, uint16 flags)
237: {
238: struct file_list *dirlist;
239: enum delret ret;
240: unsigned remainder;
241: void *save_filters;
242: int j, dlen;
243: char *p;
244:
245: if (verbose > 3) {
246: rprintf(FINFO, "delete_dir_contents(%s) flags=%d\n",
247: fname, flags);
248: }
249:
250: dlen = strlen(fname);
251: save_filters = push_local_filters(fname, dlen);
252:
253: non_perishable_cnt = 0;
254: dirlist = get_dirlist(fname, dlen, 0);
255: ret = non_perishable_cnt ? DR_NOT_EMPTY : DR_SUCCESS;
256:
257: if (!dirlist->used)
258: goto done;
259:
260: if (!(flags & DEL_RECURSE)) {
261: ret = DR_NOT_EMPTY;
262: goto done;
263: }
264:
265: p = fname + dlen;
266: if (dlen != 1 || *fname != '/')
267: *p++ = '/';
268: remainder = MAXPATHLEN - (p - fname);
269:
270: /* We do our own recursion, so make delete_item() non-recursive. */
271: flags = (flags & ~(DEL_RECURSE|DEL_MAKE_ROOM|DEL_NO_UID_WRITE))
272: | DEL_DIR_IS_EMPTY;
273:
274: for (j = dirlist->used; j--; ) {
275: struct file_struct *fp = dirlist->files[j];
276:
277: if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
278: if (verbose > 1) {
279: rprintf(FINFO,
280: "mount point, %s, pins parent directory\n",
281: f_name(fp, NULL));
282: }
283: ret = DR_NOT_EMPTY;
284: continue;
285: }
286:
287: strlcpy(p, fp->basename, remainder);
288: if (!(fp->mode & S_IWUSR) && !am_root && fp->flags & FLAG_OWNED_BY_US)
289: do_chmod(fname, fp->mode | S_IWUSR);
290: /* Save stack by recursing to ourself directly. */
291: if (S_ISDIR(fp->mode)) {
292: if (delete_dir_contents(fname, flags | DEL_RECURSE) != DR_SUCCESS)
293: ret = DR_NOT_EMPTY;
294: }
295: if (delete_item(fname, fp->mode, flags) != DR_SUCCESS)
296: ret = DR_NOT_EMPTY;
297: }
298:
299: fname[dlen] = '\0';
300:
301: done:
302: flist_free(dirlist);
303: pop_local_filters(save_filters);
304:
305: if (ret == DR_NOT_EMPTY) {
306: rprintf(FINFO, "cannot delete non-empty directory: %s\n",
307: fname);
308: }
309: return ret;
310: }
311:
312: static int start_delete_delay_temp(void)
313: {
314: char fnametmp[MAXPATHLEN];
315: int save_dry_run = dry_run;
316:
317: dry_run = 0;
318: if (!get_tmpname(fnametmp, "deldelay")
319: || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
320: rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
321: inc_recurse ? "" : " -- switching to --delete-after");
322: delete_during = 0;
323: delete_after = !inc_recurse;
324: dry_run = save_dry_run;
325: return 0;
326: }
327: unlink(fnametmp);
328: dry_run = save_dry_run;
329: return 1;
330: }
331:
332: static int flush_delete_delay(void)
333: {
334: if (deldelay_fd < 0 && !start_delete_delay_temp())
335: return 0;
336: if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
337: rsyserr(FERROR, errno, "flush of delete-delay buffer");
338: delete_during = 0;
339: delete_after = !inc_recurse;
340: close(deldelay_fd);
341: return 0;
342: }
343: deldelay_cnt = 0;
344: return 1;
345: }
346:
347: static int remember_delete(struct file_struct *file, const char *fname, int flags)
348: {
349: int len;
350:
351: if (deldelay_cnt == deldelay_size && !flush_delete_delay())
352: return 0;
353:
354: if (flags & DEL_NO_UID_WRITE)
355: deldelay_buf[deldelay_cnt++] = '!';
356:
357: while (1) {
358: len = snprintf(deldelay_buf + deldelay_cnt,
359: deldelay_size - deldelay_cnt,
360: "%x %s%c",
361: (int)file->mode, fname, '\0');
362: if ((deldelay_cnt += len) <= deldelay_size)
363: break;
364: deldelay_cnt -= len;
365: if (!flush_delete_delay())
366: return 0;
367: }
368:
369: return 1;
370: }
371:
372: static int read_delay_line(char *buf, int *flags_p)
373: {
374: static int read_pos = 0;
375: int j, len, mode;
376: char *bp, *past_space;
377:
378: while (1) {
379: for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
380: if (j < deldelay_cnt)
381: break;
382: if (deldelay_fd < 0) {
383: if (j > read_pos)
384: goto invalid_data;
385: return -1;
386: }
387: deldelay_cnt -= read_pos;
388: if (deldelay_cnt == deldelay_size)
389: goto invalid_data;
390: if (deldelay_cnt && read_pos) {
391: memmove(deldelay_buf, deldelay_buf + read_pos,
392: deldelay_cnt);
393: }
394: len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
395: deldelay_size - deldelay_cnt);
396: if (len == 0) {
397: if (deldelay_cnt) {
398: rprintf(FERROR,
399: "ERROR: unexpected EOF in delete-delay file.\n");
400: }
401: return -1;
402: }
403: if (len < 0) {
404: rsyserr(FERROR, errno,
405: "reading delete-delay file");
406: return -1;
407: }
408: deldelay_cnt += len;
409: read_pos = 0;
410: }
411:
412: bp = deldelay_buf + read_pos;
413: if (*bp == '!') {
414: bp++;
415: *flags_p = DEL_NO_UID_WRITE;
416: } else
417: *flags_p = 0;
418:
419: if (sscanf(bp, "%x ", &mode) != 1) {
420: invalid_data:
421: rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
422: return -1;
423: }
424: past_space = strchr(bp, ' ') + 1;
425: len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
426: read_pos = j + 1;
427:
428: if (len > MAXPATHLEN) {
429: rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
430: return -1;
431: }
432:
433: /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
434: * instead of returning a pointer to our buffer. */
435: memcpy(buf, past_space, len);
436:
437: return mode;
438: }
439:
440: static void do_delayed_deletions(char *delbuf)
441: {
442: int mode, flags;
443:
444: if (deldelay_fd >= 0) {
445: if (deldelay_cnt && !flush_delete_delay())
446: return;
447: lseek(deldelay_fd, 0, 0);
448: }
449: while ((mode = read_delay_line(delbuf, &flags)) >= 0)
450: delete_item(delbuf, mode, flags | DEL_RECURSE);
451: if (deldelay_fd >= 0)
452: close(deldelay_fd);
453: }
454:
455: /* This function is used to implement per-directory deletion, and is used by
456: * all the --delete-WHEN options. Note that the fbuf pointer must point to a
457: * MAXPATHLEN buffer with the name of the directory in it (the functions we
458: * call will append names onto the end, but the old dir value will be restored
459: * on exit). */
460: static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
461: {
462: static int already_warned = 0;
463: struct file_list *dirlist;
464: char delbuf[MAXPATHLEN];
465: int dlen, i;
466:
467: if (!fbuf) {
468: change_local_filter_dir(NULL, 0, 0);
469: return;
470: }
471:
472: if (verbose > 2)
473: rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
474:
475: if (allowed_lull)
476: maybe_send_keepalive();
477:
478: if (io_error && !ignore_errors) {
479: if (already_warned)
480: return;
481: rprintf(FINFO,
482: "IO error encountered -- skipping file deletion\n");
483: already_warned = 1;
484: return;
485: }
486:
487: dlen = strlen(fbuf);
488: change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
489:
490: if (one_file_system) {
491: if (file->flags & FLAG_TOP_DIR)
492: filesystem_dev = *fs_dev;
493: else if (filesystem_dev != *fs_dev)
494: return;
495: }
496:
497: dirlist = get_dirlist(fbuf, dlen, 0);
498:
499: /* If an item in dirlist is not found in flist, delete it
500: * from the filesystem. */
501: for (i = dirlist->used; i--; ) {
502: struct file_struct *fp = dirlist->files[i];
503: if (!F_IS_ACTIVE(fp))
504: continue;
505: if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
506: if (verbose > 1)
507: rprintf(FINFO, "cannot delete mount point: %s\n",
508: f_name(fp, NULL));
509: continue;
510: }
511: /* Here we want to match regardless of file type. Replacement
512: * of a file with one of another type is handled separately by
513: * a delete_item call with a DEL_MAKE_ROOM flag. */
514: if (flist_find_ignore_dirness(cur_flist, fp) < 0) {
515: int flags = DEL_RECURSE;
516: if (!(fp->mode & S_IWUSR) && !am_root && fp->flags & FLAG_OWNED_BY_US)
517: flags |= DEL_NO_UID_WRITE;
518: f_name(fp, delbuf);
519: if (delete_during == 2) {
520: if (!remember_delete(fp, delbuf, flags))
521: break;
522: } else
523: delete_item(delbuf, fp->mode, flags);
524: }
525: }
526:
527: flist_free(dirlist);
528: }
529:
530: /* This deletes any files on the receiving side that are not present on the
531: * sending side. This is used by --delete-before and --delete-after. */
532: static void do_delete_pass(void)
533: {
534: char fbuf[MAXPATHLEN];
535: STRUCT_STAT st;
536: int j;
537:
538: /* dry_run is incremented when the destination doesn't exist yet. */
539: if (dry_run > 1 || list_only)
540: return;
541:
542: for (j = 0; j < cur_flist->used; j++) {
543: struct file_struct *file = cur_flist->sorted[j];
544:
545: f_name(file, fbuf);
546:
547: if (!(file->flags & FLAG_CONTENT_DIR)) {
548: change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
549: continue;
550: }
551:
552: if (verbose > 1 && file->flags & FLAG_TOP_DIR)
553: rprintf(FINFO, "deleting in %s\n", fbuf);
554:
555: if (link_stat(fbuf, &st, keep_dirlinks) < 0
556: || !S_ISDIR(st.st_mode))
557: continue;
558:
559: delete_in_dir(fbuf, file, &st.st_dev);
560: }
561: delete_in_dir(NULL, NULL, &dev_zero);
562:
563: if (do_progress && !am_server)
564: rprintf(FINFO, " \r");
565: }
566:
567: static inline int time_differs(struct file_struct *file, stat_x *sxp)
568: {
569: return cmp_time(sxp->st.st_mtime, file->modtime);
570: }
571:
572: static inline int perms_differ(struct file_struct *file, stat_x *sxp)
573: {
574: if (preserve_perms)
575: return !BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS);
576:
577: if (preserve_executability)
578: return (sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0);
579:
580: return 0;
581: }
582:
583: static inline int ownership_differs(struct file_struct *file, stat_x *sxp)
584: {
585: if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
586: return 1;
587:
588: if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
589: return 1;
590:
591: return 0;
592: }
593:
594: #ifdef SUPPORT_ACLS
595: static inline int acls_differ(const char *fname, struct file_struct *file, stat_x *sxp)
596: {
597: if (preserve_acls) {
598: if (!ACL_READY(*sxp))
599: get_acl(fname, sxp);
600: if (set_acl(NULL, file, sxp, file->mode))
601: return 1;
602: }
603:
604: return 0;
605: }
606: #endif
607:
608: #ifdef SUPPORT_XATTRS
609: static inline int xattrs_differ(const char *fname, struct file_struct *file, stat_x *sxp)
610: {
611: if (preserve_xattrs) {
612: if (!XATTR_READY(*sxp))
613: get_xattr(fname, sxp);
614: if (xattr_diff(file, sxp, 0))
615: return 1;
616: }
617:
618: return 0;
619: }
620: #endif
621:
622: int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
623: {
624: if (S_ISLNK(file->mode)) {
625: #ifdef CAN_SET_SYMLINK_TIMES
626: if (preserve_times & PRESERVE_LINK_TIMES && time_differs(file, sxp))
627: return 0;
628: #endif
629: #ifdef CAN_CHMOD_SYMLINK
630: if (perms_differ(file, sxp))
631: return 0;
632: #endif
633: #ifdef CAN_CHOWN_SYMLINK
634: if (ownership_differs(file, sxp))
635: return 0;
636: #endif
637: #if defined SUPPORT_ACLS && 0 /* no current symlink-ACL support */
638: if (acls_differ(fname, file, sxp))
639: return 0;
640: #endif
641: #if defined SUPPORT_XATTRS && !defined NO_SYMLINK_XATTRS
642: if (xattrs_differ(fname, file, sxp))
643: return 0;
644: #endif
645: } else {
646: if (preserve_times && time_differs(file, sxp))
647: return 0;
648: if (perms_differ(file, sxp))
649: return 0;
650: if (ownership_differs(file, sxp))
651: return 0;
652: #ifdef SUPPORT_ACLS
653: if (acls_differ(fname, file, sxp))
654: return 0;
655: #endif
656: #ifdef SUPPORT_XATTRS
657: if (xattrs_differ(fname, file, sxp))
658: return 0;
659: #endif
660: }
661:
662: return 1;
663: }
664:
665: void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
666: stat_x *sxp, int32 iflags, uchar fnamecmp_type,
667: const char *xname)
668: {
669: if (statret >= 0) { /* A from-dest-dir statret can == 1! */
670: int keep_time = !preserve_times ? 0
671: : S_ISDIR(file->mode) ? preserve_times & PRESERVE_DIR_TIMES
672: : S_ISLNK(file->mode) ? preserve_times & PRESERVE_LINK_TIMES
673: : 1;
674:
675: if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
676: iflags |= ITEM_REPORT_SIZE;
677: if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
678: if (iflags & ITEM_LOCAL_CHANGE)
679: iflags |= symlink_timeset_failed_flags;
680: } else if (keep_time
681: ? cmp_time(file->modtime, sxp->st.st_mtime) != 0
682: : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
683: && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
684: iflags |= ITEM_REPORT_TIME;
685: #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
686: if (S_ISLNK(file->mode)) {
687: ;
688: } else
689: #endif
690: if (preserve_perms) {
691: if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
692: iflags |= ITEM_REPORT_PERMS;
693: } else if (preserve_executability
694: && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
695: iflags |= ITEM_REPORT_PERMS;
696: if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
697: iflags |= ITEM_REPORT_OWNER;
698: if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
699: && sxp->st.st_gid != (gid_t)F_GROUP(file))
700: iflags |= ITEM_REPORT_GROUP;
701: #ifdef SUPPORT_ACLS
702: if (preserve_acls && !S_ISLNK(file->mode)) {
703: if (!ACL_READY(*sxp))
704: get_acl(fnamecmp, sxp);
705: if (set_acl(NULL, file, sxp, file->mode))
706: iflags |= ITEM_REPORT_ACL;
707: }
708: #endif
709: #ifdef SUPPORT_XATTRS
710: if (preserve_xattrs) {
711: if (!XATTR_READY(*sxp))
712: get_xattr(fnamecmp, sxp);
713: if (xattr_diff(file, sxp, 1))
714: iflags |= ITEM_REPORT_XATTR;
715: }
716: #endif
717: } else {
718: #ifdef SUPPORT_XATTRS
719: if (preserve_xattrs && xattr_diff(file, NULL, 1))
720: iflags |= ITEM_REPORT_XATTR;
721: #endif
722: iflags |= ITEM_IS_NEW;
723: }
724:
725: iflags &= 0xffff;
726: if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || verbose > 1
727: || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
728: if (protocol_version >= 29) {
729: if (ndx >= 0)
730: write_ndx(sock_f_out, ndx);
731: write_shortint(sock_f_out, iflags);
732: if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
733: write_byte(sock_f_out, fnamecmp_type);
734: if (iflags & ITEM_XNAME_FOLLOWS)
735: write_vstring(sock_f_out, xname, strlen(xname));
736: #ifdef SUPPORT_XATTRS
737: if (preserve_xattrs && do_xfers
738: && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
739: send_xattr_request(NULL, file,
740: iflags & ITEM_REPORT_XATTR ? sock_f_out : -1);
741: }
742: #endif
743: } else if (ndx >= 0) {
744: enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
745: log_item(code, file, &stats, iflags, xname);
746: }
747: }
748: }
749:
750:
751: /* Perform our quick-check heuristic for determining if a file is unchanged. */
752: int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
753: {
754: if (st->st_size != F_LENGTH(file))
755: return 0;
756:
757: /* if always checksum is set then we use the checksum instead
758: of the file time to determine whether to sync */
759: if (always_checksum > 0 && S_ISREG(st->st_mode)) {
760: char sum[MAX_DIGEST_LEN];
761: file_checksum(fn, sum, st->st_size);
762: return memcmp(sum, F_SUM(file), checksum_len) == 0;
763: }
764:
765: if (size_only > 0)
766: return 1;
767:
768: if (ignore_times)
769: return 0;
770:
771: return cmp_time(st->st_mtime, file->modtime) == 0;
772: }
773:
774:
775: /*
776: * set (initialize) the size entries in the per-file sum_struct
777: * calculating dynamic block and checksum sizes.
778: *
779: * This is only called from generate_and_send_sums() but is a separate
780: * function to encapsulate the logic.
781: *
782: * The block size is a rounded square root of file length.
783: *
784: * The checksum size is determined according to:
785: * blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
786: * provided by Donovan Baarda which gives a probability of rsync
787: * algorithm corrupting data and falling back using the whole md4
788: * checksums.
789: *
790: * This might be made one of several selectable heuristics.
791: */
792: static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
793: {
794: int32 blength;
795: int s2length;
796: int64 l;
797:
798: if (len < 0) {
799: /* The file length overflowed our int64 var, so we can't process this file. */
800: sum->count = -1; /* indicate overflow error */
801: return;
802: }
803:
804: if (block_size)
805: blength = block_size;
806: else if (len <= BLOCK_SIZE * BLOCK_SIZE)
807: blength = BLOCK_SIZE;
808: else {
809: int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
810: int32 c;
811: int cnt;
812: for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
813: if (c < 0 || c >= max_blength)
814: blength = max_blength;
815: else {
816: blength = 0;
817: do {
818: blength |= c;
819: if (len < (int64)blength * blength)
820: blength &= ~c;
821: c >>= 1;
822: } while (c >= 8); /* round to multiple of 8 */
823: blength = MAX(blength, BLOCK_SIZE);
824: }
825: }
826:
827: if (protocol_version < 27) {
828: s2length = csum_length;
829: } else if (csum_length == SUM_LENGTH) {
830: s2length = SUM_LENGTH;
831: } else {
832: int32 c;
833: int b = BLOCKSUM_BIAS;
834: for (l = len; l >>= 1; b += 2) {}
835: for (c = blength; (c >>= 1) && b; b--) {}
836: /* add a bit, subtract rollsum, round up. */
837: s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
838: s2length = MAX(s2length, csum_length);
839: s2length = MIN(s2length, SUM_LENGTH);
840: }
841:
842: sum->flength = len;
843: sum->blength = blength;
844: sum->s2length = s2length;
845: sum->remainder = (int32)(len % blength);
846: sum->count = (int32)(l = (len / blength) + (sum->remainder != 0));
847:
848: if ((int64)sum->count != l)
849: sum->count = -1;
850:
851: if (sum->count && verbose > 2) {
852: rprintf(FINFO,
853: "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n",
854: (double)sum->count, (long)sum->remainder, (long)sum->blength,
855: sum->s2length, (double)sum->flength);
856: }
857: }
858:
859:
860: /*
861: * Generate and send a stream of signatures/checksums that describe a buffer
862: *
863: * Generate approximately one checksum every block_len bytes.
864: */
865: static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
866: {
867: int32 i;
868: struct map_struct *mapbuf;
869: struct sum_struct sum;
870: OFF_T offset = 0;
871:
872: sum_sizes_sqroot(&sum, len);
873: if (sum.count < 0)
874: return -1;
875: write_sum_head(f_out, &sum);
876:
877: if (append_mode > 0 && f_copy < 0)
878: return 0;
879:
880: if (len > 0)
881: mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
882: else
883: mapbuf = NULL;
884:
885: for (i = 0; i < sum.count; i++) {
886: int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
887: char *map = map_ptr(mapbuf, offset, n1);
888: char sum2[SUM_LENGTH];
889: uint32 sum1;
890:
891: len -= n1;
892: offset += n1;
893:
894: if (f_copy >= 0) {
895: full_write(f_copy, map, n1);
896: if (append_mode > 0)
897: continue;
898: }
899:
900: sum1 = get_checksum1(map, n1);
901: get_checksum2(map, n1, sum2);
902:
903: if (verbose > 3) {
904: rprintf(FINFO,
905: "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n",
906: (double)i, (double)offset - n1, (long)n1,
907: (unsigned long)sum1);
908: }
909: write_int(f_out, sum1);
910: write_buf(f_out, sum2, sum.s2length);
911: }
912:
913: if (mapbuf)
914: unmap_file(mapbuf);
915:
916: return 0;
917: }
918:
919:
920: /* Try to find a filename in the same dir as "fname" with a similar name. */
921: static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
922: {
923: int fname_len, fname_suf_len;
924: const char *fname_suf, *fname = file->basename;
925: uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
926: int j, lowest_j = -1;
927:
928: fname_len = strlen(fname);
929: fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
930:
931: for (j = 0; j < dirlist->used; j++) {
932: struct file_struct *fp = dirlist->files[j];
933: const char *suf, *name;
934: int len, suf_len;
935: uint32 dist;
936:
937: if (!S_ISREG(fp->mode) || !F_LENGTH(fp)
938: || fp->flags & FLAG_FILE_SENT)
939: continue;
940:
941: name = fp->basename;
942:
943: if (F_LENGTH(fp) == F_LENGTH(file)
944: && cmp_time(fp->modtime, file->modtime) == 0) {
945: if (verbose > 4) {
946: rprintf(FINFO,
947: "fuzzy size/modtime match for %s\n",
948: name);
949: }
950: return j;
951: }
952:
953: len = strlen(name);
954: suf = find_filename_suffix(name, len, &suf_len);
955:
956: dist = fuzzy_distance(name, len, fname, fname_len);
957: /* Add some extra weight to how well the suffixes match. */
958: dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
959: * 10;
960: if (verbose > 4) {
961: rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
962: name, (int)(dist>>16), (int)(dist&0xFFFF));
963: }
964: if (dist <= lowest_dist) {
965: lowest_dist = dist;
966: lowest_j = j;
967: }
968: }
969:
970: return lowest_j;
971: }
972:
973: /* Copy a file found in our --copy-dest handling. */
974: static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
975: {
976: char buf[MAXPATHLEN];
977: const char *copy_to, *partialptr;
978: int save_preserve_xattrs = preserve_xattrs;
979: int ok, fd_w;
980:
981: if (inplace) {
982: /* Let copy_file open the destination in place. */
983: fd_w = -1;
984: copy_to = dest;
985: } else {
986: fd_w = open_tmpfile(buf, dest, file);
987: if (fd_w < 0)
988: return -1;
989: copy_to = buf;
990: }
991: cleanup_set(copy_to, NULL, NULL, -1, -1);
992: if (copy_file(src, copy_to, fd_w, file->mode, 0) < 0) {
993: if (verbose) {
994: rsyserr(FINFO, errno, "copy_file %s => %s",
995: full_fname(src), copy_to);
996: }
997: /* Try to clean up. */
998: unlink(copy_to);
999: cleanup_disable();
1000: return -1;
1001: }
1002: partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
1003: preserve_xattrs = 0; /* xattrs were copied with file */
1004: ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
1005: preserve_xattrs = save_preserve_xattrs;
1006: cleanup_disable();
1007: return ok ? 0 : -1;
1008: }
1009:
1010: /* This is only called for regular files. We return -2 if we've finished
1011: * handling the file, -1 if no dest-linking occurred, or a non-negative
1012: * value if we found an alternate basis file. */
1013: static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
1014: char *cmpbuf, stat_x *sxp, int itemizing,
1015: enum logcode code)
1016: {
1017: int best_match = -1;
1018: int match_level = 0;
1019: int j = 0;
1020:
1021: do {
1022: pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1023: if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
1024: continue;
1025: switch (match_level) {
1026: case 0:
1027: best_match = j;
1028: match_level = 1;
1029: /* FALL THROUGH */
1030: case 1:
1031: if (!unchanged_file(cmpbuf, file, &sxp->st))
1032: continue;
1033: best_match = j;
1034: match_level = 2;
1035: /* FALL THROUGH */
1036: case 2:
1037: if (!unchanged_attrs(cmpbuf, file, sxp))
1038: continue;
1039: best_match = j;
1040: match_level = 3;
1041: break;
1042: }
1043: break;
1044: } while (basis_dir[++j] != NULL);
1045:
1046: if (!match_level)
1047: return -1;
1048:
1049: if (j != best_match) {
1050: j = best_match;
1051: pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1052: if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1053: return -1;
1054: }
1055:
1056: if (match_level == 3 && !copy_dest) {
1057: #ifdef SUPPORT_HARD_LINKS
1058: if (link_dest) {
1059: if (!hard_link_one(file, fname, cmpbuf, 1))
1060: goto try_a_copy;
1061: if (preserve_hard_links && F_IS_HLINKED(file))
1062: finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
1063: if (!maybe_ATTRS_REPORT && (verbose > 1 || stdout_format_has_i > 1)) {
1064: itemize(cmpbuf, file, ndx, 1, sxp,
1065: ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
1066: 0, "");
1067: }
1068: } else
1069: #endif
1070: if (itemizing)
1071: itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
1072: if (verbose > 1 && maybe_ATTRS_REPORT)
1073: rprintf(FCLIENT, "%s is uptodate\n", fname);
1074: return -2;
1075: }
1076:
1077: if (match_level >= 2) {
1078: #ifdef SUPPORT_HARD_LINKS
1079: try_a_copy: /* Copy the file locally. */
1080: #endif
1081: if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0)
1082: return -1;
1083: if (itemizing)
1084: itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
1085: if (maybe_ATTRS_REPORT
1086: && ((!itemizing && verbose && match_level == 2)
1087: || (verbose > 1 && match_level == 3))) {
1088: code = match_level == 3 ? FCLIENT : FINFO;
1089: rprintf(code, "%s%s\n", fname,
1090: match_level == 3 ? " is uptodate" : "");
1091: }
1092: #ifdef SUPPORT_HARD_LINKS
1093: if (preserve_hard_links && F_IS_HLINKED(file))
1094: finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
1095: #endif
1096: return -2;
1097: }
1098:
1099: return FNAMECMP_BASIS_DIR_LOW + j;
1100: }
1101:
1102: /* This is only called for non-regular files. We return -2 if we've finished
1103: * handling the file, or -1 if no dest-linking occurred, or a non-negative
1104: * value if we found an alternate basis file. */
1105: static int try_dests_non(struct file_struct *file, char *fname, int ndx,
1106: char *cmpbuf, stat_x *sxp, int itemizing,
1107: enum logcode code)
1108: {
1109: char lnk[MAXPATHLEN];
1110: int best_match = -1;
1111: int match_level = 0;
1112: enum nonregtype type;
1113: uint32 *devp;
1114: int len, j = 0;
1115:
1116: #ifndef SUPPORT_LINKS
1117: if (S_ISLNK(file->mode))
1118: return -1;
1119: #endif
1120: if (S_ISDIR(file->mode)) {
1121: type = TYPE_DIR;
1122: } else if (IS_SPECIAL(file->mode))
1123: type = TYPE_SPECIAL;
1124: else if (IS_DEVICE(file->mode))
1125: type = TYPE_DEVICE;
1126: #ifdef SUPPORT_LINKS
1127: else if (S_ISLNK(file->mode))
1128: type = TYPE_SYMLINK;
1129: #endif
1130: else {
1131: rprintf(FERROR,
1132: "internal: try_dests_non() called with invalid mode (%o)\n",
1133: (int)file->mode);
1134: exit_cleanup(RERR_UNSUPPORTED);
1135: }
1136:
1137: do {
1138: pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1139: if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1140: continue;
1141: switch (type) {
1142: case TYPE_DIR:
1143: if (!S_ISDIR(sxp->st.st_mode))
1144: continue;
1145: break;
1146: case TYPE_SPECIAL:
1147: if (!IS_SPECIAL(sxp->st.st_mode))
1148: continue;
1149: break;
1150: case TYPE_DEVICE:
1151: if (!IS_DEVICE(sxp->st.st_mode))
1152: continue;
1153: break;
1154: #ifdef SUPPORT_LINKS
1155: case TYPE_SYMLINK:
1156: if (!S_ISLNK(sxp->st.st_mode))
1157: continue;
1158: break;
1159: #endif
1160: }
1161: if (match_level < 1) {
1162: match_level = 1;
1163: best_match = j;
1164: }
1165: switch (type) {
1166: case TYPE_DIR:
1167: case TYPE_SPECIAL:
1168: break;
1169: case TYPE_DEVICE:
1170: devp = F_RDEV_P(file);
1171: if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1172: continue;
1173: break;
1174: #ifdef SUPPORT_LINKS
1175: case TYPE_SYMLINK:
1176: if ((len = readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1177: continue;
1178: lnk[len] = '\0';
1179: if (strcmp(lnk, F_SYMLINK(file)) != 0)
1180: continue;
1181: break;
1182: #endif
1183: }
1184: if (match_level < 2) {
1185: match_level = 2;
1186: best_match = j;
1187: }
1188: if (unchanged_attrs(cmpbuf, file, sxp)) {
1189: match_level = 3;
1190: best_match = j;
1191: break;
1192: }
1193: } while (basis_dir[++j] != NULL);
1194:
1195: if (!match_level)
1196: return -1;
1197:
1198: if (j != best_match) {
1199: j = best_match;
1200: pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1201: if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1202: return -1;
1203: }
1204:
1205: if (match_level == 3) {
1206: #ifdef SUPPORT_HARD_LINKS
1207: if (link_dest
1208: #ifndef CAN_HARDLINK_SYMLINK
1209: && !S_ISLNK(file->mode)
1210: #endif
1211: #ifndef CAN_HARDLINK_SPECIAL
1212: && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1213: #endif
1214: && !S_ISDIR(file->mode)) {
1215: if (do_link(cmpbuf, fname) < 0) {
1216: rsyserr(FERROR_XFER, errno,
1217: "failed to hard-link %s with %s",
1218: cmpbuf, fname);
1219: return j;
1220: }
1221: if (preserve_hard_links && F_IS_HLINKED(file))
1222: finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1223: } else
1224: #endif
1225: match_level = 2;
1226: if (itemizing && stdout_format_has_i
1227: && (verbose > 1 || stdout_format_has_i > 1)) {
1228: int chg = compare_dest && type != TYPE_DIR ? 0
1229: : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1230: char *lp = match_level == 3 ? "" : NULL;
1231: itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1232: }
1233: if (verbose > 1 && maybe_ATTRS_REPORT) {
1234: rprintf(FCLIENT, "%s%s is uptodate\n",
1235: fname, type == TYPE_DIR ? "/" : "");
1236: }
1237: return -2;
1238: }
1239:
1240: return j;
1241: }
1242:
1243: static void list_file_entry(struct file_struct *f)
1244: {
1245: char permbuf[PERMSTRING_SIZE];
1246: double len;
1247:
1248: if (!F_IS_ACTIVE(f)) {
1249: /* this can happen if duplicate names were removed */
1250: return;
1251: }
1252:
1253: permstring(permbuf, f->mode);
1254: len = F_LENGTH(f);
1255:
1256: /* TODO: indicate '+' if the entry has an ACL. */
1257:
1258: #ifdef SUPPORT_LINKS
1259: if (preserve_links && S_ISLNK(f->mode)) {
1260: rprintf(FINFO, "%s %11.0f %s %s -> %s\n",
1261: permbuf, len, timestring(f->modtime),
1262: f_name(f, NULL), F_SYMLINK(f));
1263: } else
1264: #endif
1265: {
1266: rprintf(FINFO, "%s %11.0f %s %s\n",
1267: permbuf, len, timestring(f->modtime),
1268: f_name(f, NULL));
1269: }
1270: }
1271:
1272: static int phase = 0;
1273: static int dflt_perms;
1274:
1275: static int implied_dirs_are_missing;
1276: /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1277: static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1278: {
1279: return F_DEPTH(file) > F_DEPTH(subtree)
1280: && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1281: }
1282:
1283: /* Acts on the indicated item in cur_flist whose name is fname. If a dir,
1284: * make sure it exists, and has the right permissions/timestamp info. For
1285: * all other non-regular files (symlinks, etc.) we create them here. For
1286: * regular files that have changed, we try to find a basis file and then
1287: * start sending checksums. The ndx is the file's unique index value.
1288: *
1289: * The fname parameter must point to a MAXPATHLEN buffer! (e.g it gets
1290: * passed to delete_item(), which can use it during a recursive delete.)
1291: *
1292: * Note that f_out is set to -1 when doing final directory-permission and
1293: * modification-time repair. */
1294: static void recv_generator(char *fname, struct file_struct *file, int ndx,
1295: int itemizing, enum logcode code, int f_out)
1296: {
1297: static const char *parent_dirname = "";
1298: /* Missing dir not created due to --dry-run; will still be scanned. */
1299: static struct file_struct *dry_missing_dir = NULL;
1300: /* Missing dir whose contents are skipped altogether due to
1301: * --ignore-non-existing, daemon exclude, or mkdir failure. */
1302: static struct file_struct *skip_dir = NULL;
1303: static struct file_list *fuzzy_dirlist = NULL;
1304: static int need_fuzzy_dirlist = 0;
1305: struct file_struct *fuzzy_file = NULL;
1306: int fd = -1, f_copy = -1;
1307: stat_x sx, real_sx;
1308: STRUCT_STAT partial_st;
1309: struct file_struct *back_file = NULL;
1310: int statret, real_ret, stat_errno;
1311: char *fnamecmp, *partialptr, *backupptr = NULL;
1312: char fnamecmpbuf[MAXPATHLEN];
1313: uchar fnamecmp_type;
1314: int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1315: int is_dir = !S_ISDIR(file->mode) ? 0
1316: : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1317: : 1;
1318:
1319: if (verbose > 2)
1320: rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1321:
1322: if (list_only) {
1323: if (is_dir < 0
1324: || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1325: return;
1326: list_file_entry(file);
1327: return;
1328: }
1329:
1330: if (skip_dir) {
1331: if (is_below(file, skip_dir)) {
1332: if (is_dir)
1333: file->flags |= FLAG_MISSING_DIR;
1334: #ifdef SUPPORT_HARD_LINKS
1335: else if (F_IS_HLINKED(file))
1336: handle_skipped_hlink(file, itemizing, code, f_out);
1337: #endif
1338: return;
1339: }
1340: skip_dir = NULL;
1341: }
1342:
1343: #ifdef SUPPORT_ACLS
1344: sx.acc_acl = sx.def_acl = NULL;
1345: #endif
1346: #ifdef SUPPORT_XATTRS
1347: sx.xattr = NULL;
1348: #endif
1349: if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1350: if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1351: if (is_dir < 0)
1352: return;
1353: #ifdef SUPPORT_HARD_LINKS
1354: if (F_IS_HLINKED(file))
1355: handle_skipped_hlink(file, itemizing, code, f_out);
1356: #endif
1357: rprintf(FERROR_XFER,
1358: "ERROR: daemon refused to receive %s \"%s\"\n",
1359: is_dir ? "directory" : "file", fname);
1360: if (is_dir)
1361: goto skipping_dir_contents;
1362: return;
1363: }
1364: }
1365:
1366: if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1367: parent_is_dry_missing:
1368: if (fuzzy_dirlist) {
1369: flist_free(fuzzy_dirlist);
1370: fuzzy_dirlist = NULL;
1371: }
1372: parent_dirname = "";
1373: statret = -1;
1374: stat_errno = ENOENT;
1375: } else {
1376: const char *dn = file->dirname ? file->dirname : ".";
1377: dry_missing_dir = NULL;
1378: if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1379: if (relative_paths && !implied_dirs
1380: && do_stat(dn, &sx.st) < 0) {
1381: if (dry_run)
1382: goto parent_is_dry_missing;
1383: if (create_directory_path(fname) < 0) {
1384: rsyserr(FERROR_XFER, errno,
1385: "recv_generator: mkdir %s failed",
1386: full_fname(dn));
1387: }
1388: }
1389: if (fuzzy_dirlist) {
1390: flist_free(fuzzy_dirlist);
1391: fuzzy_dirlist = NULL;
1392: }
1393: if (fuzzy_basis)
1394: need_fuzzy_dirlist = 1;
1395: #ifdef SUPPORT_ACLS
1396: if (!preserve_perms)
1397: dflt_perms = default_perms_for_dir(dn);
1398: #endif
1399: }
1400: parent_dirname = dn;
1401:
1402: if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1403: strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1404: fuzzy_dirlist = get_dirlist(fnamecmpbuf, -1, GDL_IGNORE_FILTER_RULES);
1405: need_fuzzy_dirlist = 0;
1406: }
1407:
1408: statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1409: stat_errno = errno;
1410: }
1411:
1412: if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1413: if (is_dir) {
1414: if (is_dir < 0)
1415: return;
1416: skip_dir = file;
1417: file->flags |= FLAG_MISSING_DIR;
1418: }
1419: #ifdef SUPPORT_HARD_LINKS
1420: else if (F_IS_HLINKED(file))
1421: handle_skipped_hlink(file, itemizing, code, f_out);
1422: #endif
1423: if (verbose > 1) {
1424: rprintf(FINFO, "not creating new %s \"%s\"\n",
1425: is_dir ? "directory" : "file", fname);
1426: }
1427: return;
1428: }
1429:
1430: if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1431: && !am_root && sx.st.st_uid == our_uid)
1432: del_opts |= DEL_NO_UID_WRITE;
1433:
1434: if (ignore_existing > 0 && statret == 0
1435: && (!is_dir || !S_ISDIR(sx.st.st_mode))) {
1436: if (verbose > 1 && is_dir >= 0)
1437: rprintf(FINFO, "%s exists\n", fname);
1438: #ifdef SUPPORT_HARD_LINKS
1439: if (F_IS_HLINKED(file))
1440: handle_skipped_hlink(file, itemizing, code, f_out);
1441: #endif
1442: goto cleanup;
1443: }
1444:
1445: fnamecmp = fname;
1446:
1447: if (is_dir) {
1448: mode_t added_perms;
1449: if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1450: goto cleanup;
1451: if (am_root < 0) {
1452: /* For --fake-super, the dir must be useable by the copying
1453: * user, just like it would be for root. */
1454: added_perms = S_IRUSR|S_IWUSR|S_IXUSR;
1455: } else
1456: added_perms = 0;
1457: if (is_dir < 0) {
1458: /* In inc_recurse mode we want to make sure any missing
1459: * directories get created while we're still processing
1460: * the parent dir (which allows us to touch the parent
1461: * dir's mtime right away). We will handle the dir in
1462: * full later (right before we handle its contents). */
1463: if (statret == 0
1464: && (S_ISDIR(sx.st.st_mode)
1465: || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1466: goto cleanup; /* Any errors get reported later. */
1467: if (do_mkdir(fname, (file->mode|added_perms) & 0700) == 0)
1468: file->flags |= FLAG_DIR_CREATED;
1469: goto cleanup;
1470: }
1471: /* The file to be received is a directory, so we need
1472: * to prepare appropriately. If there is already a
1473: * file of that name and it is *not* a directory, then
1474: * we need to delete it. If it doesn't exist, then
1475: * (perhaps recursively) create it. */
1476: if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1477: if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1478: goto skipping_dir_contents;
1479: statret = -1;
1480: }
1481: if (dry_run && statret != 0) {
1482: if (!dry_missing_dir)
1483: dry_missing_dir = file;
1484: file->flags |= FLAG_MISSING_DIR;
1485: }
1486: real_ret = statret;
1487: real_sx = sx;
1488: if (file->flags & FLAG_DIR_CREATED)
1489: statret = -1;
1490: if (!preserve_perms) { /* See comment in non-dir code below. */
1491: file->mode = dest_mode(file->mode, sx.st.st_mode,
1492: dflt_perms, statret == 0);
1493: }
1494: if (statret != 0 && basis_dir[0] != NULL) {
1495: int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1496: itemizing, code);
1497: if (j == -2) {
1498: itemizing = 0;
1499: code = FNONE;
1500: statret = 1;
1501: } else if (j >= 0) {
1502: statret = 1;
1503: fnamecmp = fnamecmpbuf;
1504: }
1505: }
1506: if (itemizing && f_out != -1) {
1507: itemize(fnamecmp, file, ndx, statret, &sx,
1508: statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1509: }
1510: if (real_ret != 0 && do_mkdir(fname,file->mode|added_perms) < 0 && errno != EEXIST) {
1511: if (!relative_paths || errno != ENOENT
1512: || create_directory_path(fname) < 0
1513: || (do_mkdir(fname, file->mode|added_perms) < 0 && errno != EEXIST)) {
1514: rsyserr(FERROR_XFER, errno,
1515: "recv_generator: mkdir %s failed",
1516: full_fname(fname));
1517: skipping_dir_contents:
1518: rprintf(FERROR,
1519: "*** Skipping any contents from this failed directory ***\n");
1520: skip_dir = file;
1521: file->flags |= FLAG_MISSING_DIR;
1522: goto cleanup;
1523: }
1524: }
1525:
1526: #ifdef SUPPORT_XATTRS
1527: if (preserve_xattrs && statret == 1)
1528: copy_xattrs(fnamecmpbuf, fname);
1529: #endif
1530: if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1531: && verbose && code != FNONE && f_out != -1)
1532: rprintf(code, "%s/\n", fname);
1533:
1534: /* We need to ensure that the dirs in the transfer have both
1535: * readable and writable permissions during the time we are
1536: * putting files within them. This is then restored to the
1537: * former permissions after the transfer is done. */
1538: #ifdef HAVE_CHMOD
1539: if (!am_root && (file->mode & S_IRWXU) != S_IRWXU && dir_tweaking) {
1540: mode_t mode = file->mode | S_IRWXU;
1541: if (do_chmod(fname, mode) < 0) {
1542: rsyserr(FERROR_XFER, errno,
1543: "failed to modify permissions on %s",
1544: full_fname(fname));
1545: }
1546: need_retouch_dir_perms = 1;
1547: }
1548: #endif
1549:
1550: if (real_ret != 0 && one_file_system)
1551: real_sx.st.st_dev = filesystem_dev;
1552: if (inc_recurse) {
1553: if (one_file_system) {
1554: uint32 *devp = F_DIR_DEV_P(file);
1555: DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1556: DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1557: }
1558: }
1559: else if (delete_during && f_out != -1 && !phase
1560: && !(file->flags & FLAG_MISSING_DIR)) {
1561: if (file->flags & FLAG_CONTENT_DIR)
1562: delete_in_dir(fname, file, &real_sx.st.st_dev);
1563: else
1564: change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1565: }
1566: goto cleanup;
1567: }
1568:
1569: /* If we're not preserving permissions, change the file-list's
1570: * mode based on the local permissions and some heuristics. */
1571: if (!preserve_perms) {
1572: int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1573: file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1574: exists);
1575: }
1576:
1577: #ifdef SUPPORT_HARD_LINKS
1578: if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1579: && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1580: goto cleanup;
1581: #endif
1582:
1583: if (preserve_links && S_ISLNK(file->mode)) {
1584: #ifdef SUPPORT_LINKS
1585: const char *sl = F_SYMLINK(file);
1586: if (safe_symlinks && unsafe_symlink(sl, fname)) {
1587: if (verbose) {
1588: if (solo_file) {
1589: /* fname contains the destination path, but we
1590: * want to report the source path. */
1591: fname = f_name(file, NULL);
1592: }
1593: rprintf(FINFO,
1594: "ignoring unsafe symlink \"%s\" -> \"%s\"\n",
1595: fname, sl);
1596: }
1597: return;
1598: }
1599: if (statret == 0) {
1600: char lnk[MAXPATHLEN];
1601: int len;
1602:
1603: if (!S_ISLNK(sx.st.st_mode))
1604: statret = -1;
1605: else if ((len = readlink(fname, lnk, MAXPATHLEN-1)) > 0
1606: && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1607: /* The link is pointing to the right place. */
1608: set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1609: if (itemizing)
1610: itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1611: #if defined SUPPORT_HARD_LINKS && defined CAN_HARDLINK_SYMLINK
1612: if (preserve_hard_links && F_IS_HLINKED(file))
1613: finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1614: #endif
1615: if (remove_source_files == 1)
1616: goto return_with_success;
1617: goto cleanup;
1618: }
1619: /* Not the right symlink (or not a symlink), so
1620: * delete it. */
1621: if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_SYMLINK) != 0)
1622: goto cleanup;
1623: } else if (basis_dir[0] != NULL) {
1624: int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1625: itemizing, code);
1626: if (j == -2) {
1627: #ifndef CAN_HARDLINK_SYMLINK
1628: if (link_dest) {
1629: /* Resort to --copy-dest behavior. */
1630: } else
1631: #endif
1632: if (!copy_dest)
1633: goto cleanup;
1634: itemizing = 0;
1635: code = FNONE;
1636: } else if (j >= 0)
1637: statret = 1;
1638: }
1639: #ifdef SUPPORT_HARD_LINKS
1640: if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1641: cur_flist->in_progress++;
1642: goto cleanup;
1643: }
1644: #endif
1645: if (do_symlink(sl, fname) != 0) {
1646: rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
1647: full_fname(fname), sl);
1648: } else {
1649: set_file_attrs(fname, file, NULL, NULL, 0);
1650: if (itemizing) {
1651: itemize(fname, file, ndx, statret, &sx,
1652: ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1653: }
1654: if (code != FNONE && verbose)
1655: rprintf(code, "%s -> %s\n", fname, sl);
1656: #ifdef SUPPORT_HARD_LINKS
1657: if (preserve_hard_links && F_IS_HLINKED(file))
1658: finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1659: #endif
1660: /* This does not check remove_source_files == 1
1661: * because this is one of the items that the old
1662: * --remove-sent-files option would remove. */
1663: if (remove_source_files)
1664: goto return_with_success;
1665: }
1666: #endif
1667: goto cleanup;
1668: }
1669:
1670: if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1671: || (preserve_specials && IS_SPECIAL(file->mode))) {
1672: dev_t rdev;
1673: if (IS_DEVICE(file->mode)) {
1674: uint32 *devp = F_RDEV_P(file);
1675: rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1676: } else
1677: rdev = 0;
1678: if (statret == 0) {
1679: int del_for_flag;
1680: if (IS_DEVICE(file->mode)) {
1681: if (!IS_DEVICE(sx.st.st_mode))
1682: statret = -1;
1683: del_for_flag = DEL_FOR_DEVICE;
1684: } else {
1685: if (!IS_SPECIAL(sx.st.st_mode))
1686: statret = -1;
1687: del_for_flag = DEL_FOR_SPECIAL;
1688: }
1689: if (statret == 0
1690: && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1691: && (IS_SPECIAL(sx.st.st_mode) || sx.st.st_rdev == rdev)) {
1692: /* The device or special file is identical. */
1693: set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1694: if (itemizing)
1695: itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1696: #ifdef SUPPORT_HARD_LINKS
1697: if (preserve_hard_links && F_IS_HLINKED(file))
1698: finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1699: #endif
1700: if (remove_source_files == 1)
1701: goto return_with_success;
1702: goto cleanup;
1703: }
1704: if (delete_item(fname, sx.st.st_mode, del_opts | del_for_flag) != 0)
1705: goto cleanup;
1706: } else if (basis_dir[0] != NULL) {
1707: int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1708: itemizing, code);
1709: if (j == -2) {
1710: #ifndef CAN_HARDLINK_SPECIAL
1711: if (link_dest) {
1712: /* Resort to --copy-dest behavior. */
1713: } else
1714: #endif
1715: if (!copy_dest)
1716: goto cleanup;
1717: itemizing = 0;
1718: code = FNONE;
1719: } else if (j >= 0)
1720: statret = 1;
1721: }
1722: #ifdef SUPPORT_HARD_LINKS
1723: if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1724: cur_flist->in_progress++;
1725: goto cleanup;
1726: }
1727: #endif
1728: if (verbose > 2) {
1729: rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1730: fname, (int)file->mode,
1731: (long)major(rdev), (long)minor(rdev));
1732: }
1733: if (do_mknod(fname, file->mode, rdev) < 0) {
1734: rsyserr(FERROR_XFER, errno, "mknod %s failed",
1735: full_fname(fname));
1736: } else {
1737: set_file_attrs(fname, file, NULL, NULL, 0);
1738: if (itemizing) {
1739: itemize(fname, file, ndx, statret, &sx,
1740: ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1741: }
1742: if (code != FNONE && verbose)
1743: rprintf(code, "%s\n", fname);
1744: #ifdef SUPPORT_HARD_LINKS
1745: if (preserve_hard_links && F_IS_HLINKED(file))
1746: finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1747: #endif
1748: if (remove_source_files == 1)
1749: goto return_with_success;
1750: }
1751: goto cleanup;
1752: }
1753:
1754: if (!S_ISREG(file->mode)) {
1755: if (solo_file)
1756: fname = f_name(file, NULL);
1757: rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1758: goto cleanup;
1759: }
1760:
1761: if (max_size > 0 && F_LENGTH(file) > max_size) {
1762: if (verbose > 1) {
1763: if (solo_file)
1764: fname = f_name(file, NULL);
1765: rprintf(FINFO, "%s is over max-size\n", fname);
1766: }
1767: goto cleanup;
1768: }
1769: if (min_size > 0 && F_LENGTH(file) < min_size) {
1770: if (verbose > 1) {
1771: if (solo_file)
1772: fname = f_name(file, NULL);
1773: rprintf(FINFO, "%s is under min-size\n", fname);
1774: }
1775: goto cleanup;
1776: }
1777:
1778: if (update_only > 0 && statret == 0
1779: && cmp_time(sx.st.st_mtime, file->modtime) > 0) {
1780: if (verbose > 1)
1781: rprintf(FINFO, "%s is newer\n", fname);
1782: #ifdef SUPPORT_HARD_LINKS
1783: if (F_IS_HLINKED(file))
1784: handle_skipped_hlink(file, itemizing, code, f_out);
1785: #endif
1786: goto cleanup;
1787: }
1788:
1789: fnamecmp_type = FNAMECMP_FNAME;
1790:
1791: if (statret == 0 && !S_ISREG(sx.st.st_mode)) {
1792: if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1793: goto cleanup;
1794: statret = -1;
1795: stat_errno = ENOENT;
1796: }
1797:
1798: if (statret != 0 && basis_dir[0] != NULL) {
1799: int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1800: itemizing, code);
1801: if (j == -2) {
1802: if (remove_source_files == 1)
1803: goto return_with_success;
1804: goto cleanup;
1805: }
1806: if (j >= 0) {
1807: fnamecmp = fnamecmpbuf;
1808: fnamecmp_type = j;
1809: statret = 0;
1810: }
1811: }
1812:
1813: real_ret = statret;
1814: real_sx = sx;
1815:
1816: if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1817: && link_stat(partialptr, &partial_st, 0) == 0
1818: && S_ISREG(partial_st.st_mode)) {
1819: if (statret != 0)
1820: goto prepare_to_open;
1821: } else
1822: partialptr = NULL;
1823:
1824: if (statret != 0 && fuzzy_dirlist) {
1825: int j = find_fuzzy(file, fuzzy_dirlist);
1826: if (j >= 0) {
1827: fuzzy_file = fuzzy_dirlist->files[j];
1828: f_name(fuzzy_file, fnamecmpbuf);
1829: if (verbose > 2) {
1830: rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1831: fname, fnamecmpbuf);
1832: }
1833: sx.st.st_size = F_LENGTH(fuzzy_file);
1834: statret = 0;
1835: fnamecmp = fnamecmpbuf;
1836: fnamecmp_type = FNAMECMP_FUZZY;
1837: }
1838: }
1839:
1840: if (statret != 0) {
1841: #ifdef SUPPORT_HARD_LINKS
1842: if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1843: cur_flist->in_progress++;
1844: goto cleanup;
1845: }
1846: #endif
1847: if (stat_errno == ENOENT)
1848: goto notify_others;
1849: rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1850: full_fname(fname));
1851: goto cleanup;
1852: }
1853:
1854: if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1855: ;
1856: else if (fnamecmp_type == FNAMECMP_FUZZY)
1857: ;
1858: else if (unchanged_file(fnamecmp, file, &sx.st)) {
1859: if (partialptr) {
1860: do_unlink(partialptr);
1861: handle_partial_dir(partialptr, PDIR_DELETE);
1862: }
1863: set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1864: if (itemizing)
1865: itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1866: #ifdef SUPPORT_HARD_LINKS
1867: if (preserve_hard_links && F_IS_HLINKED(file))
1868: finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1869: #endif
1870: if (remove_source_files != 1)
1871: goto cleanup;
1872: return_with_success:
1873: if (!dry_run)
1874: send_msg_int(MSG_SUCCESS, ndx);
1875: goto cleanup;
1876: }
1877:
1878: if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1879: #ifdef SUPPORT_HARD_LINKS
1880: if (F_IS_HLINKED(file))
1881: handle_skipped_hlink(file, itemizing, code, f_out);
1882: #endif
1883: goto cleanup;
1884: }
1885:
1886: prepare_to_open:
1887: if (partialptr) {
1888: sx.st = partial_st;
1889: fnamecmp = partialptr;
1890: fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1891: statret = 0;
1892: }
1893:
1894: if (!do_xfers)
1895: goto notify_others;
1896:
1897: if (read_batch || whole_file) {
1898: if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1899: if (!(backupptr = get_backup_name(fname)))
1900: goto cleanup;
1901: if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1902: goto pretend_missing;
1903: if (copy_file(fname, backupptr, -1, back_file->mode, 1) < 0) {
1904: unmake_file(back_file);
1905: back_file = NULL;
1906: goto cleanup;
1907: }
1908: }
1909: goto notify_others;
1910: }
1911:
1912: if (fuzzy_dirlist) {
1913: int j = flist_find(fuzzy_dirlist, file);
1914: if (j >= 0) /* don't use changing file as future fuzzy basis */
1915: fuzzy_dirlist->files[j]->flags |= FLAG_FILE_SENT;
1916: }
1917:
1918: /* open the file */
1919: if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1920: rsyserr(FERROR, errno, "failed to open %s, continuing",
1921: full_fname(fnamecmp));
1922: pretend_missing:
1923: /* pretend the file didn't exist */
1924: #ifdef SUPPORT_HARD_LINKS
1925: if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1926: cur_flist->in_progress++;
1927: goto cleanup;
1928: }
1929: #endif
1930: statret = real_ret = -1;
1931: goto notify_others;
1932: }
1933:
1934: if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1935: if (!(backupptr = get_backup_name(fname))) {
1936: close(fd);
1937: goto cleanup;
1938: }
1939: if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1940: close(fd);
1941: goto pretend_missing;
1942: }
1943: if (robust_unlink(backupptr) && errno != ENOENT) {
1944: rsyserr(FERROR_XFER, errno, "unlink %s",
1945: full_fname(backupptr));
1946: unmake_file(back_file);
1947: back_file = NULL;
1948: close(fd);
1949: goto cleanup;
1950: }
1951: if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1952: int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
1953: if (errno == ENOENT && make_bak_dir(backupptr) == 0) {
1954: if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0)
1955: save_errno = errno ? errno : save_errno;
1956: else
1957: save_errno = 0;
1958: }
1959: if (save_errno) {
1960: rsyserr(FERROR_XFER, save_errno, "open %s", full_fname(backupptr));
1961: unmake_file(back_file);
1962: back_file = NULL;
1963: close(fd);
1964: goto cleanup;
1965: }
1966: }
1967: fnamecmp_type = FNAMECMP_BACKUP;
1968: }
1969:
1970: if (verbose > 3) {
1971: rprintf(FINFO, "gen mapped %s of size %.0f\n",
1972: fnamecmp, (double)sx.st.st_size);
1973: }
1974:
1975: if (verbose > 2)
1976: rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1977:
1978: notify_others:
1979: if (remove_source_files && !delay_updates && !phase && !dry_run)
1980: increment_active_files(ndx, itemizing, code);
1981: if (inc_recurse && !dry_run)
1982: cur_flist->in_progress++;
1983: #ifdef SUPPORT_HARD_LINKS
1984: if (preserve_hard_links && F_IS_HLINKED(file))
1985: file->flags |= FLAG_FILE_SENT;
1986: #endif
1987: write_ndx(f_out, ndx);
1988: if (itemizing) {
1989: int iflags = ITEM_TRANSFER;
1990: if (always_checksum > 0)
1991: iflags |= ITEM_REPORT_CHANGE;
1992: if (fnamecmp_type != FNAMECMP_FNAME)
1993: iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1994: if (fnamecmp_type == FNAMECMP_FUZZY)
1995: iflags |= ITEM_XNAME_FOLLOWS;
1996: itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1997: fuzzy_file ? fuzzy_file->basename : NULL);
1998: #ifdef SUPPORT_ACLS
1999: if (preserve_acls)
2000: free_acl(&real_sx);
2001: #endif
2002: #ifdef SUPPORT_XATTRS
2003: if (preserve_xattrs)
2004: free_xattr(&real_sx);
2005: #endif
2006: }
2007:
2008: if (!do_xfers) {
2009: #ifdef SUPPORT_HARD_LINKS
2010: if (preserve_hard_links && F_IS_HLINKED(file))
2011: finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
2012: #endif
2013: goto cleanup;
2014: }
2015: if (read_batch)
2016: goto cleanup;
2017:
2018: if (statret != 0 || whole_file)
2019: write_sum_head(f_out, NULL);
2020: else if (sx.st.st_size <= 0) {
2021: write_sum_head(f_out, NULL);
2022: close(fd);
2023: } else {
2024: if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
2025: rprintf(FWARNING,
2026: "WARNING: file is too large for checksum sending: %s\n",
2027: fnamecmp);
2028: write_sum_head(f_out, NULL);
2029: }
2030: close(fd);
2031: }
2032:
2033: cleanup:
2034: if (back_file) {
2035: int save_preserve_xattrs = preserve_xattrs;
2036: if (f_copy >= 0)
2037: close(f_copy);
2038: #ifdef SUPPORT_XATTRS
2039: if (preserve_xattrs) {
2040: copy_xattrs(fname, backupptr);
2041: preserve_xattrs = 0;
2042: }
2043: #endif
2044: set_file_attrs(backupptr, back_file, NULL, NULL, 0);
2045: preserve_xattrs = save_preserve_xattrs;
2046: if (verbose > 1) {
2047: rprintf(FINFO, "backed up %s to %s\n",
2048: fname, backupptr);
2049: }
2050: unmake_file(back_file);
2051: }
2052:
2053: #ifdef SUPPORT_ACLS
2054: if (preserve_acls)
2055: free_acl(&sx);
2056: #endif
2057: #ifdef SUPPORT_XATTRS
2058: if (preserve_xattrs)
2059: free_xattr(&sx);
2060: #endif
2061: return;
2062: }
2063:
2064: #ifdef SUPPORT_HARD_LINKS
2065: static void handle_skipped_hlink(struct file_struct *file, int itemizing,
2066: enum logcode code, int f_out)
2067: {
2068: char fbuf[MAXPATHLEN];
2069: int new_last_ndx;
2070: struct file_list *save_flist = cur_flist;
2071:
2072: /* If we skip the last item in a chain of links and there was a
2073: * prior non-skipped hard-link waiting to finish, finish it now. */
2074: if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
2075: return;
2076:
2077: file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
2078: cur_flist->in_progress--; /* undo prior increment */
2079: f_name(file, fbuf);
2080: recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
2081:
2082: cur_flist = save_flist;
2083: }
2084: #endif
2085:
2086: static void touch_up_dirs(struct file_list *flist, int ndx)
2087: {
2088: static int counter = 0;
2089: struct file_struct *file;
2090: char *fname;
2091: BOOL fix_dir_perms;
2092: int i, start, end;
2093:
2094: if (ndx < 0) {
2095: start = 0;
2096: end = flist->used - 1;
2097: } else
2098: start = end = ndx;
2099:
2100: /* Fix any directory permissions that were modified during the
2101: * transfer and/or re-set any tweaked modified-time values. */
2102: for (i = start; i <= end; i++, counter++) {
2103: file = flist->files[i];
2104: if (!S_ISDIR(file->mode)
2105: || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
2106: continue;
2107: if (verbose > 3) {
2108: fname = f_name(file, NULL);
2109: rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
2110: NS(fname), i);
2111: }
2112: /* Be sure not to retouch permissions with --fake-super. */
2113: fix_dir_perms = !am_root && !(file->mode & S_IWUSR);
2114: if (!F_IS_ACTIVE(file) || file->flags & FLAG_MISSING_DIR
2115: || !(need_retouch_dir_times || fix_dir_perms))
2116: continue;
2117: fname = f_name(file, NULL);
2118: if (fix_dir_perms)
2119: do_chmod(fname, file->mode);
2120: if (need_retouch_dir_times) {
2121: STRUCT_STAT st;
2122: if (link_stat(fname, &st, 0) == 0
2123: && cmp_time(st.st_mtime, file->modtime) != 0)
2124: set_modtime(fname, file->modtime, file->mode);
2125: }
2126: if (counter >= loopchk_limit) {
2127: if (allowed_lull)
2128: maybe_send_keepalive();
2129: else
2130: maybe_flush_socket(0);
2131: counter = 0;
2132: }
2133: }
2134: }
2135:
2136: void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
2137: {
2138: struct file_struct *file;
2139: struct file_list *flist;
2140: char fbuf[MAXPATHLEN];
2141: int ndx;
2142:
2143: while (1) {
2144: #ifdef SUPPORT_HARD_LINKS
2145: if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
2146: int send_failed = (ndx == -2);
2147: if (send_failed)
2148: ndx = get_hlink_num();
2149: flist = flist_for_ndx(ndx, "check_for_finished_files.1");
2150: file = flist->files[ndx - flist->ndx_start];
2151: assert(file->flags & FLAG_HLINKED);
2152: if (send_failed)
2153: handle_skipped_hlink(file, itemizing, code, sock_f_out);
2154: else
2155: finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
2156: flist->in_progress--;
2157: continue;
2158: }
2159: #endif
2160:
2161: if (check_redo && (ndx = get_redo_num()) != -1) {
2162: csum_length = SUM_LENGTH;
2163: max_size = -max_size;
2164: min_size = -min_size;
2165: ignore_existing = -ignore_existing;
2166: ignore_non_existing = -ignore_non_existing;
2167: update_only = -update_only;
2168: always_checksum = -always_checksum;
2169: size_only = -size_only;
2170: append_mode = -append_mode;
2171: make_backups = -make_backups; /* avoid dup backup w/inplace */
2172: ignore_times++;
2173:
2174: flist = cur_flist;
2175: cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
2176:
2177: file = cur_flist->files[ndx - cur_flist->ndx_start];
2178: if (solo_file)
2179: strlcpy(fbuf, solo_file, sizeof fbuf);
2180: else
2181: f_name(file, fbuf);
2182: recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
2183: cur_flist->to_redo--;
2184:
2185: cur_flist = flist;
2186:
2187: csum_length = SHORT_SUM_LENGTH;
2188: max_size = -max_size;
2189: min_size = -min_size;
2190: ignore_existing = -ignore_existing;
2191: ignore_non_existing = -ignore_non_existing;
2192: update_only = -update_only;
2193: always_checksum = -always_checksum;
2194: size_only = -size_only;
2195: append_mode = -append_mode;
2196: make_backups = -make_backups;
2197: ignore_times--;
2198: continue;
2199: }
2200:
2201: if (cur_flist == first_flist)
2202: break;
2203:
2204: /* We only get here if inc_recurse is enabled. */
2205: if (first_flist->in_progress || first_flist->to_redo)
2206: break;
2207:
2208: write_ndx(sock_f_out, NDX_DONE);
2209: if (!read_batch)
2210: maybe_flush_socket(1);
2211:
2212: if (delete_during == 2 || !dir_tweaking) {
2213: /* Skip directory touch-up. */
2214: } else if (first_flist->parent_ndx >= 0)
2215: touch_up_dirs(dir_flist, first_flist->parent_ndx);
2216:
2217: flist_free(first_flist); /* updates first_flist */
2218: }
2219: }
2220:
2221: void generate_files(int f_out, const char *local_name)
2222: {
2223: int i, ndx, next_loopchk = 0;
2224: char fbuf[MAXPATHLEN];
2225: int itemizing;
2226: enum logcode code;
2227: int save_do_progress = do_progress;
2228:
2229: if (protocol_version >= 29) {
2230: itemizing = 1;
2231: maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2232: code = logfile_format_has_i ? FNONE : FLOG;
2233: } else if (am_daemon) {
2234: itemizing = logfile_format_has_i && do_xfers;
2235: maybe_ATTRS_REPORT = ATTRS_REPORT;
2236: code = itemizing || !do_xfers ? FCLIENT : FINFO;
2237: } else if (!am_server) {
2238: itemizing = stdout_format_has_i;
2239: maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2240: code = itemizing ? FNONE : FINFO;
2241: } else {
2242: itemizing = 0;
2243: maybe_ATTRS_REPORT = ATTRS_REPORT;
2244: code = FINFO;
2245: }
2246: solo_file = local_name;
2247: dir_tweaking = !(list_only || solo_file || dry_run);
2248: need_retouch_dir_times = preserve_times & PRESERVE_DIR_TIMES;
2249: loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2250: symlink_timeset_failed_flags = ITEM_REPORT_TIME
2251: | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2252: implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2253:
2254: if (verbose > 2)
2255: rprintf(FINFO, "generator starting pid=%ld\n", (long)getpid());
2256:
2257: if (delete_before && !solo_file && cur_flist->used > 0)
2258: do_delete_pass();
2259: if (delete_during == 2) {
2260: deldelay_size = BIGPATHBUFLEN * 4;
2261: deldelay_buf = new_array(char, deldelay_size);
2262: if (!deldelay_buf)
2263: out_of_memory("delete-delay");
2264: }
2265: do_progress = 0;
2266:
2267: if (append_mode > 0 || whole_file < 0)
2268: whole_file = 0;
2269: if (verbose >= 2) {
2270: rprintf(FINFO, "delta-transmission %s\n",
2271: whole_file
2272: ? "disabled for local transfer or --whole-file"
2273: : "enabled");
2274: }
2275:
2276: /* Since we often fill up the outgoing socket and then just sit around
2277: * waiting for the other 2 processes to do their thing, we don't want
2278: * to exit on a timeout. If the data stops flowing, the receiver will
2279: * notice that and let us know via the message pipe (or its closing). */
2280: ignore_timeout = 1;
2281:
2282: dflt_perms = (ACCESSPERMS & ~orig_umask);
2283:
2284: do {
2285: #ifdef SUPPORT_HARD_LINKS
2286: if (preserve_hard_links && inc_recurse) {
2287: while (!flist_eof && file_total < FILECNT_LOOKAHEAD/2)
2288: wait_for_receiver();
2289: }
2290: #endif
2291:
2292: if (inc_recurse && cur_flist->parent_ndx >= 0) {
2293: struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2294: if (solo_file)
2295: strlcpy(fbuf, solo_file, sizeof fbuf);
2296: else
2297: f_name(fp, fbuf);
2298: ndx = cur_flist->ndx_start - 1;
2299: recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2300: if (delete_during && dry_run < 2 && !list_only
2301: && !(fp->flags & FLAG_MISSING_DIR)) {
2302: if (fp->flags & FLAG_CONTENT_DIR) {
2303: dev_t dirdev;
2304: if (one_file_system) {
2305: uint32 *devp = F_DIR_DEV_P(fp);
2306: dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2307: } else
2308: dirdev = MAKEDEV(0, 0);
2309: delete_in_dir(fbuf, fp, &dirdev);
2310: } else
2311: change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2312: }
2313: }
2314: for (i = cur_flist->low; i <= cur_flist->high; i++) {
2315: struct file_struct *file = cur_flist->sorted[i];
2316:
2317: if (!F_IS_ACTIVE(file))
2318: continue;
2319:
2320: if (unsort_ndx)
2321: ndx = F_NDX(file);
2322: else
2323: ndx = i + cur_flist->ndx_start;
2324:
2325: if (solo_file)
2326: strlcpy(fbuf, solo_file, sizeof fbuf);
2327: else
2328: f_name(file, fbuf);
2329: recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2330:
2331: check_for_finished_files(itemizing, code, 0);
2332:
2333: if (i + cur_flist->ndx_start >= next_loopchk) {
2334: if (allowed_lull)
2335: maybe_send_keepalive();
2336: else
2337: maybe_flush_socket(0);
2338: next_loopchk += loopchk_limit;
2339: }
2340: }
2341:
2342: if (!inc_recurse) {
2343: write_ndx(f_out, NDX_DONE);
2344: break;
2345: }
2346:
2347: while (1) {
2348: check_for_finished_files(itemizing, code, 1);
2349: if (cur_flist->next || flist_eof)
2350: break;
2351: wait_for_receiver();
2352: }
2353: } while ((cur_flist = cur_flist->next) != NULL);
2354:
2355: if (delete_during)
2356: delete_in_dir(NULL, NULL, &dev_zero);
2357: phase++;
2358: if (verbose > 2)
2359: rprintf(FINFO, "generate_files phase=%d\n", phase);
2360:
2361: while (1) {
2362: check_for_finished_files(itemizing, code, 1);
2363: if (msgdone_cnt)
2364: break;
2365: wait_for_receiver();
2366: }
2367:
2368: phase++;
2369: if (verbose > 2)
2370: rprintf(FINFO, "generate_files phase=%d\n", phase);
2371:
2372: write_ndx(f_out, NDX_DONE);
2373:
2374: /* Reduce round-trip lag-time for a useless delay-updates phase. */
2375: if (protocol_version >= 29 && !delay_updates)
2376: write_ndx(f_out, NDX_DONE);
2377:
2378: /* Read MSG_DONE for the redo phase (and any prior messages). */
2379: while (1) {
2380: check_for_finished_files(itemizing, code, 0);
2381: if (msgdone_cnt > 1)
2382: break;
2383: wait_for_receiver();
2384: }
2385:
2386: if (protocol_version >= 29) {
2387: phase++;
2388: if (verbose > 2)
2389: rprintf(FINFO, "generate_files phase=%d\n", phase);
2390: if (delay_updates)
2391: write_ndx(f_out, NDX_DONE);
2392: /* Read MSG_DONE for delay-updates phase & prior messages. */
2393: while (msgdone_cnt == 2)
2394: wait_for_receiver();
2395: }
2396:
2397: do_progress = save_do_progress;
2398: if (delete_during == 2)
2399: do_delayed_deletions(fbuf);
2400: if (delete_after && !solo_file && file_total > 0)
2401: do_delete_pass();
2402:
2403: if ((need_retouch_dir_perms || need_retouch_dir_times)
2404: && dir_tweaking && (!inc_recurse || delete_during == 2))
2405: touch_up_dirs(dir_flist, -1);
2406:
2407: if (max_delete >= 0 && deletion_count > max_delete) {
2408: rprintf(FWARNING,
2409: "Deletions stopped due to --max-delete limit (%d skipped)\n",
2410: deletion_count - max_delete);
2411: io_error |= IOERR_DEL_LIMIT;
2412: }
2413:
2414: if (verbose > 2)
2415: rprintf(FINFO, "generate_files finished\n");
2416: }