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Linux needs symlink xattrs. Fixes bug 8201.
[rsync/qnx.git] / flist.c
blob0758f8967d90a93723c1f57e40b04ea1f9f3fb7c
1 /*
2 * Generate and receive file lists.
3 *
4 * Copyright (C) 1996 Andrew Tridgell
5 * Copyright (C) 1996 Paul Mackerras
6 * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
7 * Copyright (C) 2002-2009 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 #include "ifuncs.h"
25 #include "rounding.h"
26 #include "inums.h"
27 #include "io.h"
28
29 extern int am_root;
30 extern int am_server;
31 extern int am_daemon;
32 extern int am_sender;
33 extern int am_generator;
34 extern int inc_recurse;
35 extern int always_checksum;
36 extern int module_id;
37 extern int ignore_errors;
38 extern int numeric_ids;
39 extern int recurse;
40 extern int use_qsort;
41 extern int xfer_dirs;
42 extern int filesfrom_fd;
43 extern int one_file_system;
44 extern int copy_dirlinks;
45 extern int preserve_uid;
46 extern int preserve_gid;
47 extern int preserve_acls;
48 extern int preserve_xattrs;
49 extern int preserve_links;
50 extern int preserve_hard_links;
51 extern int preserve_devices;
52 extern int preserve_specials;
53 extern int delete_during;
54 extern int missing_args;
55 extern int eol_nulls;
56 extern int relative_paths;
57 extern int implied_dirs;
58 extern int ignore_perishable;
59 extern int non_perishable_cnt;
60 extern int prune_empty_dirs;
61 extern int copy_links;
62 extern int copy_unsafe_links;
63 extern int protocol_version;
64 extern int sanitize_paths;
65 extern int munge_symlinks;
66 extern int use_safe_inc_flist;
67 extern int need_unsorted_flist;
68 extern int sender_symlink_iconv;
69 extern int output_needs_newline;
70 extern int sender_keeps_checksum;
71 extern int unsort_ndx;
72 extern uid_t our_uid;
73 extern struct stats stats;
74 extern char *filesfrom_host;
75 extern char *usermap, *groupmap;
76
77 extern char curr_dir[MAXPATHLEN];
78
79 extern struct chmod_mode_struct *chmod_modes;
80
81 extern filter_rule_list filter_list;
82 extern filter_rule_list daemon_filter_list;
83
84 #ifdef ICONV_OPTION
85 extern int filesfrom_convert;
86 extern iconv_t ic_send, ic_recv;
87 #endif
88
89 #ifdef HAVE_UTIMENSAT
90 #ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
91 #define ST_MTIME_NSEC st_mtim.tv_nsec
92 #elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
93 #define ST_MTIME_NSEC st_mtimensec
94 #endif
95 #endif
96
97 #define PTR_SIZE (sizeof (struct file_struct *))
98
99 int io_error;
100 int checksum_len;
101 dev_t filesystem_dev; /* used to implement -x */
102
103 struct file_list *cur_flist, *first_flist, *dir_flist;
104 int send_dir_ndx = -1, send_dir_depth = -1;
105 int flist_cnt = 0; /* how many (non-tmp) file list objects exist */
106 int file_total = 0; /* total of all active items over all file-lists */
107 int file_old_total = 0; /* total of active items that will soon be gone */
108 int flist_eof = 0; /* all the file-lists are now known */
109
110 #define NORMAL_NAME 0
111 #define SLASH_ENDING_NAME 1
112 #define DOTDIR_NAME 2
113
114 /* Starting from protocol version 26, we always use 64-bit ino_t and dev_t
115 * internally, even if this platform does not allow files to have 64-bit inums.
116 * The only exception is if we're on a platform with no 64-bit type at all.
117 *
118 * Because we use read_longint() to get these off the wire, if you transfer
119 * devices or (for protocols < 30) hardlinks with dev or inum > 2**32 to a
120 * machine with no 64-bit types then you will get an overflow error.
121 *
122 * Note that if you transfer devices from a 64-bit-devt machine (say, Solaris)
123 * to a 32-bit-devt machine (say, Linux-2.2/x86) then the device numbers will
124 * be truncated. But it's a kind of silly thing to do anyhow. */
125
126 /* The tmp_* vars are used as a cache area by make_file() to store data
127 * that the sender doesn't need to remember in its file list. The data
128 * will survive just long enough to be used by send_file_entry(). */
129 static dev_t tmp_rdev;
130 #ifdef SUPPORT_HARD_LINKS
131 static int64 tmp_dev = -1, tmp_ino;
132 #endif
133 static char tmp_sum[MAX_DIGEST_LEN];
134
135 static char empty_sum[MAX_DIGEST_LEN];
136 static int flist_count_offset; /* for --delete --progress */
137
138 static void flist_sort_and_clean(struct file_list *flist, int strip_root);
139 static void output_flist(struct file_list *flist);
140
141 void init_flist(void)
142 {
143 if (DEBUG_GTE(FLIST, 4)) {
144 rprintf(FINFO, "FILE_STRUCT_LEN=%d, EXTRA_LEN=%d\n",
145 (int)FILE_STRUCT_LEN, (int)EXTRA_LEN);
146 }
147 checksum_len = protocol_version < 21 ? 2
148 : protocol_version < 30 ? MD4_DIGEST_LEN
149 : MD5_DIGEST_LEN;
150 }
151
152 static int show_filelist_p(void)
153 {
154 return INFO_GTE(FLIST, 1) && xfer_dirs && !am_server && !inc_recurse;
155 }
156
157 static void start_filelist_progress(char *kind)
158 {
159 rprintf(FCLIENT, "%s ... ", kind);
160 output_needs_newline = 1;
161 rflush(FINFO);
162 }
163
164 static void emit_filelist_progress(int count)
165 {
166 rprintf(FCLIENT, " %d files...\r", count);
167 }
168
169 static void maybe_emit_filelist_progress(int count)
170 {
171 if (INFO_GTE(FLIST, 2) && show_filelist_p() && (count % 100) == 0)
172 emit_filelist_progress(count);
173 }
174
175 static void finish_filelist_progress(const struct file_list *flist)
176 {
177 if (INFO_GTE(FLIST, 2)) {
178 /* This overwrites the progress line */
179 rprintf(FINFO, "%d file%sto consider\n",
180 flist->used, flist->used == 1 ? " " : "s ");
181 } else {
182 output_needs_newline = 0;
183 rprintf(FINFO, "done\n");
184 }
185 }
186
187 void show_flist_stats(void)
188 {
189 /* Nothing yet */
190 }
191
192 /* Stat either a symlink or its referent, depending on the settings of
193 * copy_links, copy_unsafe_links, etc. Returns -1 on error, 0 on success.
194 *
195 * If path is the name of a symlink, then the linkbuf buffer (which must hold
196 * MAXPATHLEN chars) will be set to the symlink's target string.
197 *
198 * The stat structure pointed to by stp will contain information about the
199 * link or the referent as appropriate, if they exist. */
200 static int readlink_stat(const char *path, STRUCT_STAT *stp, char *linkbuf)
201 {
202 #ifdef SUPPORT_LINKS
203 if (link_stat(path, stp, copy_dirlinks) < 0)
204 return -1;
205 if (S_ISLNK(stp->st_mode)) {
206 int llen = do_readlink(path, linkbuf, MAXPATHLEN - 1);
207 if (llen < 0)
208 return -1;
209 linkbuf[llen] = '\0';
210 if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
211 if (INFO_GTE(SYMSAFE, 1)) {
212 rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
213 path, linkbuf);
214 }
215 return x_stat(path, stp, NULL);
216 }
217 if (munge_symlinks && am_sender && llen > SYMLINK_PREFIX_LEN
218 && strncmp(linkbuf, SYMLINK_PREFIX, SYMLINK_PREFIX_LEN) == 0) {
219 memmove(linkbuf, linkbuf + SYMLINK_PREFIX_LEN,
220 llen - SYMLINK_PREFIX_LEN + 1);
221 }
222 }
223 return 0;
224 #else
225 return x_stat(path, stp, NULL);
226 #endif
227 }
228
229 int link_stat(const char *path, STRUCT_STAT *stp, int follow_dirlinks)
230 {
231 #ifdef SUPPORT_LINKS
232 if (copy_links)
233 return x_stat(path, stp, NULL);
234 if (x_lstat(path, stp, NULL) < 0)
235 return -1;
236 if (follow_dirlinks && S_ISLNK(stp->st_mode)) {
237 STRUCT_STAT st;
238 if (x_stat(path, &st, NULL) == 0 && S_ISDIR(st.st_mode))
239 *stp = st;
240 }
241 return 0;
242 #else
243 return x_stat(path, stp, NULL);
244 #endif
245 }
246
247 static inline int is_daemon_excluded(const char *fname, int is_dir)
248 {
249 if (daemon_filter_list.head
250 && check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
251 errno = ENOENT;
252 return 1;
253 }
254 return 0;
255 }
256
257 static inline int path_is_daemon_excluded(char *path, int ignore_filename)
258 {
259 if (daemon_filter_list.head) {
260 char *slash = path;
261
262 while ((slash = strchr(slash+1, '/')) != NULL) {
263 int ret;
264 *slash = '\0';
265 ret = check_filter(&daemon_filter_list, FLOG, path, 1);
266 *slash = '/';
267 if (ret < 0) {
268 errno = ENOENT;
269 return 1;
270 }
271 }
272
273 if (!ignore_filename
274 && check_filter(&daemon_filter_list, FLOG, path, 1) < 0) {
275 errno = ENOENT;
276 return 1;
277 }
278 }
279
280 return 0;
281 }
282
283 /* This function is used to check if a file should be included/excluded
284 * from the list of files based on its name and type etc. The value of
285 * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
286 static int is_excluded(const char *fname, int is_dir, int filter_level)
287 {
288 #if 0 /* This currently never happens, so avoid a useless compare. */
289 if (filter_level == NO_FILTERS)
290 return 0;
291 #endif
292 if (is_daemon_excluded(fname, is_dir))
293 return 1;
294 if (filter_level != ALL_FILTERS)
295 return 0;
296 if (filter_list.head
297 && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
298 return 1;
299 return 0;
300 }
301
302 static void send_directory(int f, struct file_list *flist,
303 char *fbuf, int len, int flags);
304
305 static const char *pathname, *orig_dir;
306 static int pathname_len;
307
308 /* Make sure flist can hold at least flist->used + extra entries. */
309 static void flist_expand(struct file_list *flist, int extra)
310 {
311 struct file_struct **new_ptr;
312
313 if (flist->used + extra <= flist->malloced)
314 return;
315
316 if (flist->malloced < FLIST_START)
317 flist->malloced = FLIST_START;
318 else if (flist->malloced >= FLIST_LINEAR)
319 flist->malloced += FLIST_LINEAR;
320 else
321 flist->malloced *= 2;
322
323 /* In case count jumped or we are starting the list
324 * with a known size just set it. */
325 if (flist->malloced < flist->used + extra)
326 flist->malloced = flist->used + extra;
327
328 new_ptr = realloc_array(flist->files, struct file_struct *,
329 flist->malloced);
330
331 if (DEBUG_GTE(FLIST, 1) && flist->malloced != FLIST_START) {
332 rprintf(FCLIENT, "[%s] expand file_list pointer array to %s bytes, did%s move\n",
333 who_am_i(),
334 big_num(sizeof flist->files[0] * flist->malloced),
335 (new_ptr == flist->files) ? " not" : "");
336 }
337
338 flist->files = new_ptr;
339
340 if (!flist->files)
341 out_of_memory("flist_expand");
342 }
343
344 static void flist_done_allocating(struct file_list *flist)
345 {
346 void *ptr = pool_boundary(flist->file_pool, 8*1024);
347 if (flist->pool_boundary == ptr)
348 flist->pool_boundary = NULL; /* list didn't use any pool memory */
349 else
350 flist->pool_boundary = ptr;
351 }
352
353 /* Call this with EITHER (1) "file, NULL, 0" to chdir() to the file's
354 * F_PATHNAME(), or (2) "NULL, dir, dirlen" to chdir() to the supplied dir,
355 * with dir == NULL taken to be the starting directory, and dirlen < 0
356 * indicating that strdup(dir) should be called and then the -dirlen length
357 * value checked to ensure that it is not daemon-excluded. */
358 int change_pathname(struct file_struct *file, const char *dir, int dirlen)
359 {
360 if (dirlen < 0) {
361 char *cpy = strdup(dir);
362 if (*cpy != '/')
363 change_dir(orig_dir, CD_SKIP_CHDIR);
364 if (path_is_daemon_excluded(cpy, 0))
365 goto chdir_error;
366 dir = cpy;
367 dirlen = -dirlen;
368 } else {
369 if (file) {
370 if (pathname == F_PATHNAME(file))
371 return 1;
372 dir = F_PATHNAME(file);
373 if (dir)
374 dirlen = strlen(dir);
375 } else if (pathname == dir)
376 return 1;
377 if (dir && *dir != '/')
378 change_dir(orig_dir, CD_SKIP_CHDIR);
379 }
380
381 pathname = dir;
382 pathname_len = dirlen;
383
384 if (!dir)
385 dir = orig_dir;
386
387 if (!change_dir(dir, CD_NORMAL)) {
388 chdir_error:
389 io_error |= IOERR_GENERAL;
390 rsyserr(FERROR_XFER, errno, "change_dir %s failed", full_fname(dir));
391 if (dir != orig_dir)
392 change_dir(orig_dir, CD_NORMAL);
393 pathname = NULL;
394 pathname_len = 0;
395 return 0;
396 }
397
398 return 1;
399 }
400
401 static void send_file_entry(int f, const char *fname, struct file_struct *file,
402 #ifdef SUPPORT_LINKS
403 const char *symlink_name, int symlink_len,
404 #endif
405 int ndx, int first_ndx)
406 {
407 static time_t modtime;
408 static mode_t mode;
409 #ifdef SUPPORT_HARD_LINKS
410 static int64 dev;
411 #endif
412 static dev_t rdev;
413 static uint32 rdev_major;
414 static uid_t uid;
415 static gid_t gid;
416 static const char *user_name, *group_name;
417 static char lastname[MAXPATHLEN];
418 #ifdef SUPPORT_HARD_LINKS
419 int first_hlink_ndx = -1;
420 #endif
421 int l1, l2;
422 int xflags;
423
424 /* Initialize starting value of xflags and adjust counts. */
425 if (S_ISREG(file->mode))
426 xflags = 0;
427 else if (S_ISDIR(file->mode)) {
428 stats.num_dirs++;
429 if (protocol_version >= 30) {
430 if (file->flags & FLAG_CONTENT_DIR)
431 xflags = file->flags & FLAG_TOP_DIR;
432 else if (file->flags & FLAG_IMPLIED_DIR)
433 xflags = XMIT_TOP_DIR | XMIT_NO_CONTENT_DIR;
434 else
435 xflags = XMIT_NO_CONTENT_DIR;
436 } else
437 xflags = file->flags & FLAG_TOP_DIR; /* FLAG_TOP_DIR == XMIT_TOP_DIR */
438 } else {
439 if (S_ISLNK(file->mode))
440 stats.num_symlinks++;
441 else if (IS_DEVICE(file->mode))
442 stats.num_devices++;
443 else if (IS_SPECIAL(file->mode))
444 stats.num_specials++;
445 xflags = 0;
446 }
447
448 if (file->mode == mode)
449 xflags |= XMIT_SAME_MODE;
450 else
451 mode = file->mode;
452
453 if (preserve_devices && IS_DEVICE(mode)) {
454 if (protocol_version < 28) {
455 if (tmp_rdev == rdev)
456 xflags |= XMIT_SAME_RDEV_pre28;
457 else
458 rdev = tmp_rdev;
459 } else {
460 rdev = tmp_rdev;
461 if ((uint32)major(rdev) == rdev_major)
462 xflags |= XMIT_SAME_RDEV_MAJOR;
463 else
464 rdev_major = major(rdev);
465 if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu)
466 xflags |= XMIT_RDEV_MINOR_8_pre30;
467 }
468 } else if (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31) {
469 /* Special files don't need an rdev number, so just make
470 * the historical transmission of the value efficient. */
471 if (protocol_version < 28)
472 xflags |= XMIT_SAME_RDEV_pre28;
473 else {
474 rdev = MAKEDEV(major(rdev), 0);
475 xflags |= XMIT_SAME_RDEV_MAJOR;
476 if (protocol_version < 30)
477 xflags |= XMIT_RDEV_MINOR_8_pre30;
478 }
479 } else if (protocol_version < 28)
480 rdev = MAKEDEV(0, 0);
481 if (!preserve_uid || ((uid_t)F_OWNER(file) == uid && *lastname))
482 xflags |= XMIT_SAME_UID;
483 else {
484 uid = F_OWNER(file);
485 if (!numeric_ids) {
486 user_name = add_uid(uid);
487 if (inc_recurse && user_name)
488 xflags |= XMIT_USER_NAME_FOLLOWS;
489 }
490 }
491 if (!preserve_gid || ((gid_t)F_GROUP(file) == gid && *lastname))
492 xflags |= XMIT_SAME_GID;
493 else {
494 gid = F_GROUP(file);
495 if (!numeric_ids) {
496 group_name = add_gid(gid);
497 if (inc_recurse && group_name)
498 xflags |= XMIT_GROUP_NAME_FOLLOWS;
499 }
500 }
501 if (file->modtime == modtime)
502 xflags |= XMIT_SAME_TIME;
503 else
504 modtime = file->modtime;
505 if (NSEC_BUMP(file) && protocol_version >= 31)
506 xflags |= XMIT_MOD_NSEC;
507
508 #ifdef SUPPORT_HARD_LINKS
509 if (tmp_dev != -1) {
510 if (protocol_version >= 30) {
511 struct ht_int64_node *np = idev_find(tmp_dev, tmp_ino);
512 first_hlink_ndx = (int32)(long)np->data - 1;
513 if (first_hlink_ndx < 0) {
514 np->data = (void*)(long)(first_ndx + ndx + 1);
515 xflags |= XMIT_HLINK_FIRST;
516 }
517 if (DEBUG_GTE(HLINK, 1)) {
518 if (first_hlink_ndx >= 0) {
519 rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
520 who_am_i(), first_ndx + ndx, first_hlink_ndx,
521 first_hlink_ndx >= first_ndx ? "" : "un");
522 } else if (DEBUG_GTE(HLINK, 3)) {
523 rprintf(FINFO, "[%s] dev:inode for #%d is %s:%s\n",
524 who_am_i(), first_ndx + ndx,
525 big_num(tmp_dev), big_num(tmp_ino));
526 }
527 }
528 } else {
529 if (tmp_dev == dev) {
530 if (protocol_version >= 28)
531 xflags |= XMIT_SAME_DEV_pre30;
532 } else
533 dev = tmp_dev;
534 }
535 xflags |= XMIT_HLINKED;
536 }
537 #endif
538
539 for (l1 = 0;
540 lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
541 l1++) {}
542 l2 = strlen(fname+l1);
543
544 if (l1 > 0)
545 xflags |= XMIT_SAME_NAME;
546 if (l2 > 255)
547 xflags |= XMIT_LONG_NAME;
548
549 /* We must make sure we don't send a zero flag byte or the
550 * other end will terminate the flist transfer. Note that
551 * the use of XMIT_TOP_DIR on a non-dir has no meaning, so
552 * it's harmless way to add a bit to the first flag byte. */
553 if (protocol_version >= 28) {
554 if (!xflags && !S_ISDIR(mode))
555 xflags |= XMIT_TOP_DIR;
556 if ((xflags & 0xFF00) || !xflags) {
557 xflags |= XMIT_EXTENDED_FLAGS;
558 write_shortint(f, xflags);
559 } else
560 write_byte(f, xflags);
561 } else {
562 if (!(xflags & 0xFF))
563 xflags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
564 write_byte(f, xflags);
565 }
566 if (xflags & XMIT_SAME_NAME)
567 write_byte(f, l1);
568 if (xflags & XMIT_LONG_NAME)
569 write_varint30(f, l2);
570 else
571 write_byte(f, l2);
572 write_buf(f, fname + l1, l2);
573
574 #ifdef SUPPORT_HARD_LINKS
575 if (first_hlink_ndx >= 0) {
576 write_varint(f, first_hlink_ndx);
577 if (first_hlink_ndx >= first_ndx)
578 goto the_end;
579 }
580 #endif
581
582 write_varlong30(f, F_LENGTH(file), 3);
583 if (!(xflags & XMIT_SAME_TIME)) {
584 if (protocol_version >= 30)
585 write_varlong(f, modtime, 4);
586 else
587 write_int(f, modtime);
588 }
589 if (xflags & XMIT_MOD_NSEC)
590 write_varint(f, F_MOD_NSEC(file));
591 if (!(xflags & XMIT_SAME_MODE))
592 write_int(f, to_wire_mode(mode));
593 if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
594 if (protocol_version < 30)
595 write_int(f, uid);
596 else {
597 write_varint(f, uid);
598 if (xflags & XMIT_USER_NAME_FOLLOWS) {
599 int len = strlen(user_name);
600 write_byte(f, len);
601 write_buf(f, user_name, len);
602 }
603 }
604 }
605 if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
606 if (protocol_version < 30)
607 write_int(f, gid);
608 else {
609 write_varint(f, gid);
610 if (xflags & XMIT_GROUP_NAME_FOLLOWS) {
611 int len = strlen(group_name);
612 write_byte(f, len);
613 write_buf(f, group_name, len);
614 }
615 }
616 }
617 if ((preserve_devices && IS_DEVICE(mode))
618 || (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31)) {
619 if (protocol_version < 28) {
620 if (!(xflags & XMIT_SAME_RDEV_pre28))
621 write_int(f, (int)rdev);
622 } else {
623 if (!(xflags & XMIT_SAME_RDEV_MAJOR))
624 write_varint30(f, major(rdev));
625 if (protocol_version >= 30)
626 write_varint(f, minor(rdev));
627 else if (xflags & XMIT_RDEV_MINOR_8_pre30)
628 write_byte(f, minor(rdev));
629 else
630 write_int(f, minor(rdev));
631 }
632 }
633
634 #ifdef SUPPORT_LINKS
635 if (symlink_len) {
636 write_varint30(f, symlink_len);
637 write_buf(f, symlink_name, symlink_len);
638 }
639 #endif
640
641 #ifdef SUPPORT_HARD_LINKS
642 if (tmp_dev != -1 && protocol_version < 30) {
643 /* Older protocols expect the dev number to be transmitted
644 * 1-incremented so that it is never zero. */
645 if (protocol_version < 26) {
646 /* 32-bit dev_t and ino_t */
647 write_int(f, (int32)(dev+1));
648 write_int(f, (int32)tmp_ino);
649 } else {
650 /* 64-bit dev_t and ino_t */
651 if (!(xflags & XMIT_SAME_DEV_pre30))
652 write_longint(f, dev+1);
653 write_longint(f, tmp_ino);
654 }
655 }
656 #endif
657
658 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
659 const char *sum;
660 if (S_ISREG(mode))
661 sum = tmp_sum;
662 else {
663 /* Prior to 28, we sent a useless set of nulls. */
664 sum = empty_sum;
665 }
666 write_buf(f, sum, checksum_len);
667 }
668
669 #ifdef SUPPORT_HARD_LINKS
670 the_end:
671 #endif
672 strlcpy(lastname, fname, MAXPATHLEN);
673
674 if (S_ISREG(mode) || S_ISLNK(mode))
675 stats.total_size += F_LENGTH(file);
676 }
677
678 static struct file_struct *recv_file_entry(int f, struct file_list *flist, int xflags)
679 {
680 static int64 modtime;
681 static mode_t mode;
682 #ifdef SUPPORT_HARD_LINKS
683 static int64 dev;
684 #endif
685 static dev_t rdev;
686 static uint32 rdev_major;
687 static uid_t uid;
688 static gid_t gid;
689 static uint16 gid_flags;
690 static char lastname[MAXPATHLEN], *lastdir;
691 static int lastdir_depth, lastdir_len = -1;
692 static unsigned int del_hier_name_len = 0;
693 static int in_del_hier = 0;
694 char thisname[MAXPATHLEN];
695 unsigned int l1 = 0, l2 = 0;
696 int alloc_len, basename_len, linkname_len;
697 int extra_len = file_extra_cnt * EXTRA_LEN;
698 int first_hlink_ndx = -1;
699 int64 file_length;
700 uint32 modtime_nsec;
701 const char *basename;
702 struct file_struct *file;
703 alloc_pool_t *pool;
704 char *bp;
705
706 if (xflags & XMIT_SAME_NAME)
707 l1 = read_byte(f);
708
709 if (xflags & XMIT_LONG_NAME)
710 l2 = read_varint30(f);
711 else
712 l2 = read_byte(f);
713
714 if (l2 >= MAXPATHLEN - l1) {
715 rprintf(FERROR,
716 "overflow: xflags=0x%x l1=%d l2=%d lastname=%s [%s]\n",
717 xflags, l1, l2, lastname, who_am_i());
718 overflow_exit("recv_file_entry");
719 }
720
721 strlcpy(thisname, lastname, l1 + 1);
722 read_sbuf(f, &thisname[l1], l2);
723 thisname[l1 + l2] = 0;
724
725 /* Abuse basename_len for a moment... */
726 basename_len = strlcpy(lastname, thisname, MAXPATHLEN);
727
728 #ifdef ICONV_OPTION
729 if (ic_recv != (iconv_t)-1) {
730 xbuf outbuf, inbuf;
731
732 INIT_CONST_XBUF(outbuf, thisname);
733 INIT_XBUF(inbuf, lastname, basename_len, (size_t)-1);
734
735 if (iconvbufs(ic_recv, &inbuf, &outbuf, ICB_INIT) < 0) {
736 io_error |= IOERR_GENERAL;
737 rprintf(FERROR_UTF8,
738 "[%s] cannot convert filename: %s (%s)\n",
739 who_am_i(), lastname, strerror(errno));
740 outbuf.len = 0;
741 }
742 thisname[outbuf.len] = '\0';
743 }
744 #endif
745
746 if (*thisname)
747 clean_fname(thisname, 0);
748
749 if (sanitize_paths)
750 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
751
752 if ((basename = strrchr(thisname, '/')) != NULL) {
753 int len = basename++ - thisname;
754 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
755 lastdir = new_array(char, len + 1);
756 memcpy(lastdir, thisname, len);
757 lastdir[len] = '\0';
758 lastdir_len = len;
759 lastdir_depth = count_dir_elements(lastdir);
760 }
761 } else
762 basename = thisname;
763 basename_len = strlen(basename) + 1; /* count the '\0' */
764
765 #ifdef SUPPORT_HARD_LINKS
766 if (protocol_version >= 30
767 && BITS_SETnUNSET(xflags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
768 first_hlink_ndx = read_varint(f);
769 if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->ndx_start + flist->used) {
770 rprintf(FERROR,
771 "hard-link reference out of range: %d (%d)\n",
772 first_hlink_ndx, flist->ndx_start + flist->used);
773 exit_cleanup(RERR_PROTOCOL);
774 }
775 if (DEBUG_GTE(HLINK, 1)) {
776 rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
777 who_am_i(), flist->used+flist->ndx_start, first_hlink_ndx,
778 first_hlink_ndx >= flist->ndx_start ? "" : "un");
779 }
780 if (first_hlink_ndx >= flist->ndx_start) {
781 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
782 file_length = F_LENGTH(first);
783 modtime = first->modtime;
784 modtime_nsec = F_MOD_NSEC(first);
785 mode = first->mode;
786 if (preserve_uid)
787 uid = F_OWNER(first);
788 if (preserve_gid)
789 gid = F_GROUP(first);
790 if (preserve_devices && IS_DEVICE(mode)) {
791 uint32 *devp = F_RDEV_P(first);
792 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
793 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
794 }
795 if (preserve_links && S_ISLNK(mode))
796 linkname_len = strlen(F_SYMLINK(first)) + 1;
797 else
798 linkname_len = 0;
799 goto create_object;
800 }
801 }
802 #endif
803
804 file_length = read_varlong30(f, 3);
805 if (!(xflags & XMIT_SAME_TIME)) {
806 if (protocol_version >= 30) {
807 modtime = read_varlong(f, 4);
808 #if SIZEOF_TIME_T < SIZEOF_INT64
809 if (!am_generator && (int64)(time_t)modtime != modtime) {
810 rprintf(FERROR_XFER,
811 "Time value of %s truncated on receiver.\n",
812 lastname);
813 }
814 #endif
815 } else
816 modtime = read_int(f);
817 }
818 if (xflags & XMIT_MOD_NSEC)
819 modtime_nsec = read_varint(f);
820 else
821 modtime_nsec = 0;
822 if (!(xflags & XMIT_SAME_MODE))
823 mode = from_wire_mode(read_int(f));
824
825 if (chmod_modes && !S_ISLNK(mode) && mode)
826 mode = tweak_mode(mode, chmod_modes);
827
828 if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
829 if (protocol_version < 30)
830 uid = (uid_t)read_int(f);
831 else {
832 uid = (uid_t)read_varint(f);
833 if (xflags & XMIT_USER_NAME_FOLLOWS)
834 uid = recv_user_name(f, uid);
835 else if (inc_recurse && am_root && (!numeric_ids || usermap))
836 uid = match_uid(uid);
837 }
838 }
839 if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
840 if (protocol_version < 30)
841 gid = (gid_t)read_int(f);
842 else {
843 gid = (gid_t)read_varint(f);
844 gid_flags = 0;
845 if (xflags & XMIT_GROUP_NAME_FOLLOWS)
846 gid = recv_group_name(f, gid, &gid_flags);
847 else if (inc_recurse && (!am_root || !numeric_ids || groupmap))
848 gid = match_gid(gid, &gid_flags);
849 }
850 }
851
852 if ((preserve_devices && IS_DEVICE(mode))
853 || (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31)) {
854 if (protocol_version < 28) {
855 if (!(xflags & XMIT_SAME_RDEV_pre28))
856 rdev = (dev_t)read_int(f);
857 } else {
858 uint32 rdev_minor;
859 if (!(xflags & XMIT_SAME_RDEV_MAJOR))
860 rdev_major = read_varint30(f);
861 if (protocol_version >= 30)
862 rdev_minor = read_varint(f);
863 else if (xflags & XMIT_RDEV_MINOR_8_pre30)
864 rdev_minor = read_byte(f);
865 else
866 rdev_minor = read_int(f);
867 rdev = MAKEDEV(rdev_major, rdev_minor);
868 }
869 if (IS_DEVICE(mode))
870 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
871 file_length = 0;
872 } else if (protocol_version < 28)
873 rdev = MAKEDEV(0, 0);
874
875 #ifdef SUPPORT_LINKS
876 if (preserve_links && S_ISLNK(mode)) {
877 linkname_len = read_varint30(f) + 1; /* count the '\0' */
878 if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
879 rprintf(FERROR, "overflow: linkname_len=%d\n",
880 linkname_len - 1);
881 overflow_exit("recv_file_entry");
882 }
883 #ifdef ICONV_OPTION
884 /* We don't know how much extra room we need to convert
885 * the as-yet-unread symlink data, so let's hope that a
886 * double-size buffer is plenty. */
887 if (sender_symlink_iconv)
888 linkname_len *= 2;
889 #endif
890 if (munge_symlinks)
891 linkname_len += SYMLINK_PREFIX_LEN;
892 }
893 else
894 #endif
895 linkname_len = 0;
896
897 #ifdef SUPPORT_HARD_LINKS
898 create_object:
899 if (preserve_hard_links) {
900 if (protocol_version < 28 && S_ISREG(mode))
901 xflags |= XMIT_HLINKED;
902 if (xflags & XMIT_HLINKED)
903 extra_len += (inc_recurse+1) * EXTRA_LEN;
904 }
905 #endif
906
907 #ifdef SUPPORT_ACLS
908 /* Directories need an extra int32 for the default ACL. */
909 if (preserve_acls && S_ISDIR(mode))
910 extra_len += EXTRA_LEN;
911 #endif
912
913 if (always_checksum && S_ISREG(mode))
914 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
915
916 #if SIZEOF_INT64 >= 8
917 if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
918 extra_len += EXTRA_LEN;
919 #endif
920 #ifdef HAVE_UTIMENSAT
921 if (modtime_nsec)
922 extra_len += EXTRA_LEN;
923 #endif
924 if (file_length < 0) {
925 rprintf(FERROR, "Offset underflow: file-length is negative\n");
926 exit_cleanup(RERR_UNSUPPORTED);
927 }
928
929 if (inc_recurse && S_ISDIR(mode)) {
930 if (one_file_system) {
931 /* Room to save the dir's device for -x */
932 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
933 }
934 pool = dir_flist->file_pool;
935 } else
936 pool = flist->file_pool;
937
938 #if EXTRA_ROUNDING > 0
939 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
940 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
941 #endif
942
943 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
944 + linkname_len;
945 bp = pool_alloc(pool, alloc_len, "recv_file_entry");
946
947 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
948 bp += extra_len;
949 file = (struct file_struct *)bp;
950 bp += FILE_STRUCT_LEN;
951
952 memcpy(bp, basename, basename_len);
953
954 #ifdef SUPPORT_HARD_LINKS
955 if (xflags & XMIT_HLINKED)
956 file->flags |= FLAG_HLINKED;
957 #endif
958 file->modtime = (time_t)modtime;
959 #ifdef HAVE_UTIMENSAT
960 if (modtime_nsec) {
961 file->flags |= FLAG_MOD_NSEC;
962 OPT_EXTRA(file, 0)->unum = modtime_nsec;
963 }
964 #endif
965 file->len32 = (uint32)file_length;
966 #if SIZEOF_INT64 >= 8
967 if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
968 #if SIZEOF_CAPITAL_OFF_T < 8
969 rprintf(FERROR, "Offset overflow: attempted 64-bit file-length\n");
970 exit_cleanup(RERR_UNSUPPORTED);
971 #else
972 file->flags |= FLAG_LENGTH64;
973 OPT_EXTRA(file, NSEC_BUMP(file))->unum = (uint32)(file_length >> 32);
974 #endif
975 }
976 #endif
977 file->mode = mode;
978 if (preserve_uid)
979 F_OWNER(file) = uid;
980 if (preserve_gid) {
981 F_GROUP(file) = gid;
982 file->flags |= gid_flags;
983 }
984 if (unsort_ndx)
985 F_NDX(file) = flist->used + flist->ndx_start;
986
987 if (basename != thisname) {
988 file->dirname = lastdir;
989 F_DEPTH(file) = lastdir_depth + 1;
990 } else
991 F_DEPTH(file) = 1;
992
993 if (S_ISDIR(mode)) {
994 if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
995 F_DEPTH(file)--;
996 if (protocol_version >= 30) {
997 if (!(xflags & XMIT_NO_CONTENT_DIR)) {
998 if (xflags & XMIT_TOP_DIR)
999 file->flags |= FLAG_TOP_DIR;
1000 file->flags |= FLAG_CONTENT_DIR;
1001 } else if (xflags & XMIT_TOP_DIR)
1002 file->flags |= FLAG_IMPLIED_DIR;
1003 } else if (xflags & XMIT_TOP_DIR) {
1004 in_del_hier = recurse;
1005 del_hier_name_len = F_DEPTH(file) == 0 ? 0 : l1 + l2;
1006 if (relative_paths && del_hier_name_len > 2
1007 && lastname[del_hier_name_len-1] == '.'
1008 && lastname[del_hier_name_len-2] == '/')
1009 del_hier_name_len -= 2;
1010 file->flags |= FLAG_TOP_DIR | FLAG_CONTENT_DIR;
1011 } else if (in_del_hier) {
1012 if (!relative_paths || !del_hier_name_len
1013 || (l1 >= del_hier_name_len
1014 && lastname[del_hier_name_len] == '/'))
1015 file->flags |= FLAG_CONTENT_DIR;
1016 else
1017 in_del_hier = 0;
1018 }
1019 }
1020
1021 if (preserve_devices && IS_DEVICE(mode)) {
1022 uint32 *devp = F_RDEV_P(file);
1023 DEV_MAJOR(devp) = major(rdev);
1024 DEV_MINOR(devp) = minor(rdev);
1025 }
1026
1027 #ifdef SUPPORT_LINKS
1028 if (linkname_len) {
1029 bp += basename_len;
1030 if (first_hlink_ndx >= flist->ndx_start) {
1031 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1032 memcpy(bp, F_SYMLINK(first), linkname_len);
1033 } else {
1034 if (munge_symlinks) {
1035 strlcpy(bp, SYMLINK_PREFIX, linkname_len);
1036 bp += SYMLINK_PREFIX_LEN;
1037 linkname_len -= SYMLINK_PREFIX_LEN;
1038 }
1039 #ifdef ICONV_OPTION
1040 if (sender_symlink_iconv) {
1041 xbuf outbuf, inbuf;
1042
1043 alloc_len = linkname_len;
1044 linkname_len /= 2;
1045
1046 /* Read the symlink data into the end of our double-sized
1047 * buffer and then convert it into the right spot. */
1048 INIT_XBUF(inbuf, bp + alloc_len - linkname_len,
1049 linkname_len - 1, (size_t)-1);
1050 read_sbuf(f, inbuf.buf, inbuf.len);
1051 INIT_XBUF(outbuf, bp, 0, alloc_len);
1052
1053 if (iconvbufs(ic_recv, &inbuf, &outbuf, ICB_INIT) < 0) {
1054 io_error |= IOERR_GENERAL;
1055 rprintf(FERROR_XFER,
1056 "[%s] cannot convert symlink data for: %s (%s)\n",
1057 who_am_i(), full_fname(thisname), strerror(errno));
1058 bp = (char*)file->basename;
1059 *bp++ = '\0';
1060 outbuf.len = 0;
1061 }
1062 bp[outbuf.len] = '\0';
1063 } else
1064 #endif
1065 read_sbuf(f, bp, linkname_len - 1);
1066 if (sanitize_paths && !munge_symlinks && *bp)
1067 sanitize_path(bp, bp, "", lastdir_depth, SP_DEFAULT);
1068 }
1069 }
1070 #endif
1071
1072 #ifdef SUPPORT_HARD_LINKS
1073 if (preserve_hard_links && xflags & XMIT_HLINKED) {
1074 if (protocol_version >= 30) {
1075 if (xflags & XMIT_HLINK_FIRST) {
1076 F_HL_GNUM(file) = flist->ndx_start + flist->used;
1077 } else
1078 F_HL_GNUM(file) = first_hlink_ndx;
1079 } else {
1080 static int32 cnt = 0;
1081 struct ht_int64_node *np;
1082 int64 ino;
1083 int32 ndx;
1084 if (protocol_version < 26) {
1085 dev = read_int(f);
1086 ino = read_int(f);
1087 } else {
1088 if (!(xflags & XMIT_SAME_DEV_pre30))
1089 dev = read_longint(f);
1090 ino = read_longint(f);
1091 }
1092 np = idev_find(dev, ino);
1093 ndx = (int32)(long)np->data - 1;
1094 if (ndx < 0) {
1095 ndx = cnt++;
1096 np->data = (void*)(long)cnt;
1097 }
1098 F_HL_GNUM(file) = ndx;
1099 }
1100 }
1101 #endif
1102
1103 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
1104 if (S_ISREG(mode))
1105 bp = F_SUM(file);
1106 else {
1107 /* Prior to 28, we get a useless set of nulls. */
1108 bp = tmp_sum;
1109 }
1110 if (first_hlink_ndx >= flist->ndx_start) {
1111 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1112 memcpy(bp, F_SUM(first), checksum_len);
1113 } else
1114 read_buf(f, bp, checksum_len);
1115 }
1116
1117 #ifdef SUPPORT_ACLS
1118 if (preserve_acls && !S_ISLNK(mode))
1119 receive_acl(f, file);
1120 #endif
1121 #ifdef SUPPORT_XATTRS
1122 if (preserve_xattrs)
1123 receive_xattr(f, file);
1124 #endif
1125
1126 if (S_ISREG(mode) || S_ISLNK(mode))
1127 stats.total_size += file_length;
1128
1129 return file;
1130 }
1131
1132 /* Create a file_struct for a named file by reading its stat() information
1133 * and performing extensive checks against global options.
1134 *
1135 * Returns a pointer to the new file struct, or NULL if there was an error
1136 * or this file should be excluded.
1137 *
1138 * Note: Any error (here or in send_file_name) that results in the omission of
1139 * an existent source file from the file list should set
1140 * "io_error |= IOERR_GENERAL" to avoid deletion of the file from the
1141 * destination if --delete is on. */
1142 struct file_struct *make_file(const char *fname, struct file_list *flist,
1143 STRUCT_STAT *stp, int flags, int filter_level)
1144 {
1145 static char *lastdir;
1146 static int lastdir_len = -1;
1147 struct file_struct *file;
1148 char thisname[MAXPATHLEN];
1149 char linkname[MAXPATHLEN];
1150 int alloc_len, basename_len, linkname_len;
1151 int extra_len = file_extra_cnt * EXTRA_LEN;
1152 const char *basename;
1153 alloc_pool_t *pool;
1154 STRUCT_STAT st;
1155 char *bp;
1156
1157 if (strlcpy(thisname, fname, sizeof thisname) >= sizeof thisname) {
1158 io_error |= IOERR_GENERAL;
1159 rprintf(FERROR_XFER, "skipping overly long name: %s\n", fname);
1160 return NULL;
1161 }
1162 clean_fname(thisname, 0);
1163 if (sanitize_paths)
1164 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
1165
1166 if (stp && (S_ISDIR(stp->st_mode) || stp->st_mode == 0)) {
1167 /* This is needed to handle a "symlink/." with a --relative
1168 * dir, or a request to delete a specific file. */
1169 st = *stp;
1170 *linkname = '\0'; /* make IBM code checker happy */
1171 } else if (readlink_stat(thisname, &st, linkname) != 0) {
1172 int save_errno = errno;
1173 /* See if file is excluded before reporting an error. */
1174 if (filter_level != NO_FILTERS
1175 && (is_excluded(thisname, 0, filter_level)
1176 || is_excluded(thisname, 1, filter_level))) {
1177 if (ignore_perishable && save_errno != ENOENT)
1178 non_perishable_cnt++;
1179 return NULL;
1180 }
1181 if (save_errno == ENOENT) {
1182 #ifdef SUPPORT_LINKS
1183 /* When our options tell us to follow a symlink that
1184 * points nowhere, tell the user about the symlink
1185 * instead of giving a "vanished" message. We only
1186 * dereference a symlink if one of the --copy*links
1187 * options was specified, so there's no need for the
1188 * extra lstat() if one of these options isn't on. */
1189 if ((copy_links || copy_unsafe_links || copy_dirlinks)
1190 && x_lstat(thisname, &st, NULL) == 0
1191 && S_ISLNK(st.st_mode)) {
1192 io_error |= IOERR_GENERAL;
1193 rprintf(FERROR_XFER, "symlink has no referent: %s\n",
1194 full_fname(thisname));
1195 } else
1196 #endif
1197 {
1198 enum logcode c = am_daemon && protocol_version < 28
1199 ? FERROR : FWARNING;
1200 io_error |= IOERR_VANISHED;
1201 rprintf(c, "file has vanished: %s\n",
1202 full_fname(thisname));
1203 }
1204 } else {
1205 io_error |= IOERR_GENERAL;
1206 rsyserr(FERROR_XFER, save_errno, "readlink_stat(%s) failed",
1207 full_fname(thisname));
1208 }
1209 return NULL;
1210 } else if (st.st_mode == 0) {
1211 io_error |= IOERR_GENERAL;
1212 rprintf(FINFO, "skipping file with bogus (zero) st_mode: %s\n",
1213 full_fname(thisname));
1214 return NULL;
1215 }
1216
1217 if (filter_level == NO_FILTERS)
1218 goto skip_filters;
1219
1220 if (S_ISDIR(st.st_mode)) {
1221 if (!xfer_dirs) {
1222 rprintf(FINFO, "skipping directory %s\n", thisname);
1223 return NULL;
1224 }
1225 /* -x only affects dirs because we need to avoid recursing
1226 * into a mount-point directory, not to avoid copying a
1227 * symlinked file if -L (or similar) was specified. */
1228 if (one_file_system && st.st_dev != filesystem_dev
1229 && BITS_SETnUNSET(flags, FLAG_CONTENT_DIR, FLAG_TOP_DIR)) {
1230 if (one_file_system > 1) {
1231 if (INFO_GTE(MOUNT, 1)) {
1232 rprintf(FINFO,
1233 "[%s] skipping mount-point dir %s\n",
1234 who_am_i(), thisname);
1235 }
1236 return NULL;
1237 }
1238 flags |= FLAG_MOUNT_DIR;
1239 flags &= ~FLAG_CONTENT_DIR;
1240 }
1241 } else
1242 flags &= ~FLAG_CONTENT_DIR;
1243
1244 if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
1245 if (ignore_perishable)
1246 non_perishable_cnt++;
1247 return NULL;
1248 }
1249
1250 if (lp_ignore_nonreadable(module_id)) {
1251 #ifdef SUPPORT_LINKS
1252 if (!S_ISLNK(st.st_mode))
1253 #endif
1254 if (access(thisname, R_OK) != 0)
1255 return NULL;
1256 }
1257
1258 skip_filters:
1259
1260 /* Only divert a directory in the main transfer. */
1261 if (flist) {
1262 if (flist->prev && S_ISDIR(st.st_mode)
1263 && flags & FLAG_DIVERT_DIRS) {
1264 /* Room for parent/sibling/next-child info. */
1265 extra_len += DIRNODE_EXTRA_CNT * EXTRA_LEN;
1266 if (relative_paths)
1267 extra_len += PTR_EXTRA_CNT * EXTRA_LEN;
1268 pool = dir_flist->file_pool;
1269 } else
1270 pool = flist->file_pool;
1271 } else {
1272 #ifdef SUPPORT_ACLS
1273 /* Directories need an extra int32 for the default ACL. */
1274 if (preserve_acls && S_ISDIR(st.st_mode))
1275 extra_len += EXTRA_LEN;
1276 #endif
1277 pool = NULL;
1278 }
1279
1280 if (DEBUG_GTE(FLIST, 2)) {
1281 rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
1282 who_am_i(), thisname, filter_level);
1283 }
1284
1285 if ((basename = strrchr(thisname, '/')) != NULL) {
1286 int len = basename++ - thisname;
1287 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
1288 lastdir = new_array(char, len + 1);
1289 memcpy(lastdir, thisname, len);
1290 lastdir[len] = '\0';
1291 lastdir_len = len;
1292 }
1293 } else
1294 basename = thisname;
1295 basename_len = strlen(basename) + 1; /* count the '\0' */
1296
1297 #ifdef SUPPORT_LINKS
1298 linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
1299 #else
1300 linkname_len = 0;
1301 #endif
1302
1303 #ifdef ST_MTIME_NSEC
1304 if (st.ST_MTIME_NSEC && protocol_version >= 31)
1305 extra_len += EXTRA_LEN;
1306 #endif
1307 #if SIZEOF_CAPITAL_OFF_T >= 8
1308 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
1309 extra_len += EXTRA_LEN;
1310 #endif
1311
1312 if (always_checksum && am_sender && S_ISREG(st.st_mode)) {
1313 file_checksum(thisname, tmp_sum, st.st_size);
1314 if (sender_keeps_checksum)
1315 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
1316 }
1317
1318 #if EXTRA_ROUNDING > 0
1319 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
1320 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
1321 #endif
1322
1323 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
1324 + linkname_len;
1325 if (pool)
1326 bp = pool_alloc(pool, alloc_len, "make_file");
1327 else {
1328 if (!(bp = new_array(char, alloc_len)))
1329 out_of_memory("make_file");
1330 }
1331
1332 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
1333 bp += extra_len;
1334 file = (struct file_struct *)bp;
1335 bp += FILE_STRUCT_LEN;
1336
1337 memcpy(bp, basename, basename_len);
1338
1339 #ifdef SUPPORT_HARD_LINKS
1340 if (preserve_hard_links && flist && flist->prev) {
1341 if (protocol_version >= 28
1342 ? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
1343 : S_ISREG(st.st_mode)) {
1344 tmp_dev = (int64)st.st_dev;
1345 tmp_ino = (int64)st.st_ino;
1346 } else
1347 tmp_dev = -1;
1348 }
1349 #endif
1350
1351 #ifdef HAVE_STRUCT_STAT_ST_RDEV
1352 if (IS_DEVICE(st.st_mode)) {
1353 tmp_rdev = st.st_rdev;
1354 st.st_size = 0;
1355 } else if (IS_SPECIAL(st.st_mode))
1356 st.st_size = 0;
1357 #endif
1358
1359 file->flags = flags;
1360 file->modtime = st.st_mtime;
1361 #ifdef ST_MTIME_NSEC
1362 if (st.ST_MTIME_NSEC && protocol_version >= 31) {
1363 file->flags |= FLAG_MOD_NSEC;
1364 OPT_EXTRA(file, 0)->unum = st.ST_MTIME_NSEC;
1365 }
1366 #endif
1367 file->len32 = (uint32)st.st_size;
1368 #if SIZEOF_CAPITAL_OFF_T >= 8
1369 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
1370 file->flags |= FLAG_LENGTH64;
1371 OPT_EXTRA(file, NSEC_BUMP(file))->unum = (uint32)(st.st_size >> 32);
1372 }
1373 #endif
1374 file->mode = st.st_mode;
1375 if (preserve_uid)
1376 F_OWNER(file) = st.st_uid;
1377 if (preserve_gid)
1378 F_GROUP(file) = st.st_gid;
1379 if (am_generator && st.st_uid == our_uid)
1380 file->flags |= FLAG_OWNED_BY_US;
1381
1382 if (basename != thisname)
1383 file->dirname = lastdir;
1384
1385 #ifdef SUPPORT_LINKS
1386 if (linkname_len)
1387 memcpy(bp + basename_len, linkname, linkname_len);
1388 #endif
1389
1390 if (am_sender)
1391 F_PATHNAME(file) = pathname;
1392 else if (!pool)
1393 F_DEPTH(file) = extra_len / EXTRA_LEN;
1394
1395 if (basename_len == 0+1) {
1396 if (!pool)
1397 unmake_file(file);
1398 return NULL;
1399 }
1400
1401 if (sender_keeps_checksum && S_ISREG(st.st_mode))
1402 memcpy(F_SUM(file), tmp_sum, checksum_len);
1403
1404 if (unsort_ndx)
1405 F_NDX(file) = stats.num_dirs;
1406
1407 return file;
1408 }
1409
1410 /* Only called for temporary file_struct entries created by make_file(). */
1411 void unmake_file(struct file_struct *file)
1412 {
1413 free(REQ_EXTRA(file, F_DEPTH(file)));
1414 }
1415
1416 static struct file_struct *send_file_name(int f, struct file_list *flist,
1417 const char *fname, STRUCT_STAT *stp,
1418 int flags, int filter_level)
1419 {
1420 struct file_struct *file;
1421
1422 file = make_file(fname, flist, stp, flags, filter_level);
1423 if (!file)
1424 return NULL;
1425
1426 if (chmod_modes && !S_ISLNK(file->mode) && file->mode)
1427 file->mode = tweak_mode(file->mode, chmod_modes);
1428
1429 if (f >= 0) {
1430 char fbuf[MAXPATHLEN];
1431 #ifdef SUPPORT_LINKS
1432 const char *symlink_name;
1433 int symlink_len;
1434 #ifdef ICONV_OPTION
1435 char symlink_buf[MAXPATHLEN];
1436 #endif
1437 #endif
1438 #if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
1439 stat_x sx;
1440 init_stat_x(&sx);
1441 #endif
1442
1443 #ifdef SUPPORT_LINKS
1444 if (preserve_links && S_ISLNK(file->mode)) {
1445 symlink_name = F_SYMLINK(file);
1446 symlink_len = strlen(symlink_name);
1447 if (symlink_len == 0) {
1448 io_error |= IOERR_GENERAL;
1449 f_name(file, fbuf);
1450 rprintf(FERROR_XFER,
1451 "skipping symlink with 0-length value: %s\n",
1452 full_fname(fbuf));
1453 return NULL;
1454 }
1455 } else {
1456 symlink_name = NULL;
1457 symlink_len = 0;
1458 }
1459 #endif
1460
1461 #ifdef ICONV_OPTION
1462 if (ic_send != (iconv_t)-1) {
1463 xbuf outbuf, inbuf;
1464
1465 INIT_CONST_XBUF(outbuf, fbuf);
1466
1467 if (file->dirname) {
1468 INIT_XBUF_STRLEN(inbuf, (char*)file->dirname);
1469 outbuf.size -= 2; /* Reserve room for '/' & 1 more char. */
1470 if (iconvbufs(ic_send, &inbuf, &outbuf, ICB_INIT) < 0)
1471 goto convert_error;
1472 outbuf.size += 2;
1473 fbuf[outbuf.len++] = '/';
1474 }
1475
1476 INIT_XBUF_STRLEN(inbuf, (char*)file->basename);
1477 if (iconvbufs(ic_send, &inbuf, &outbuf, ICB_INIT) < 0) {
1478 convert_error:
1479 io_error |= IOERR_GENERAL;
1480 rprintf(FERROR_XFER,
1481 "[%s] cannot convert filename: %s (%s)\n",
1482 who_am_i(), f_name(file, fbuf), strerror(errno));
1483 return NULL;
1484 }
1485 fbuf[outbuf.len] = '\0';
1486
1487 #ifdef SUPPORT_LINKS
1488 if (symlink_len && sender_symlink_iconv) {
1489 INIT_XBUF(inbuf, (char*)symlink_name, symlink_len, (size_t)-1);
1490 INIT_CONST_XBUF(outbuf, symlink_buf);
1491 if (iconvbufs(ic_send, &inbuf, &outbuf, ICB_INIT) < 0) {
1492 io_error |= IOERR_GENERAL;
1493 f_name(file, fbuf);
1494 rprintf(FERROR_XFER,
1495 "[%s] cannot convert symlink data for: %s (%s)\n",
1496 who_am_i(), full_fname(fbuf), strerror(errno));
1497 return NULL;
1498 }
1499 symlink_buf[outbuf.len] = '\0';
1500
1501 symlink_name = symlink_buf;
1502 symlink_len = outbuf.len;
1503 }
1504 #endif
1505 } else
1506 #endif
1507 f_name(file, fbuf);
1508
1509 #ifdef SUPPORT_ACLS
1510 if (preserve_acls && !S_ISLNK(file->mode)) {
1511 sx.st.st_mode = file->mode;
1512 if (get_acl(fname, &sx) < 0) {
1513 io_error |= IOERR_GENERAL;
1514 return NULL;
1515 }
1516 }
1517 #endif
1518 #ifdef SUPPORT_XATTRS
1519 if (preserve_xattrs) {
1520 sx.st.st_mode = file->mode;
1521 if (get_xattr(fname, &sx) < 0) {
1522 io_error |= IOERR_GENERAL;
1523 return NULL;
1524 }
1525 }
1526 #endif
1527
1528 send_file_entry(f, fbuf, file,
1529 #ifdef SUPPORT_LINKS
1530 symlink_name, symlink_len,
1531 #endif
1532 flist->used, flist->ndx_start);
1533
1534 #ifdef SUPPORT_ACLS
1535 if (preserve_acls && !S_ISLNK(file->mode)) {
1536 send_acl(f, &sx);
1537 free_acl(&sx);
1538 }
1539 #endif
1540 #ifdef SUPPORT_XATTRS
1541 if (preserve_xattrs) {
1542 F_XATTR(file) = send_xattr(f, &sx);
1543 free_xattr(&sx);
1544 }
1545 #endif
1546 }
1547
1548 maybe_emit_filelist_progress(flist->used + flist_count_offset);
1549
1550 flist_expand(flist, 1);
1551 flist->files[flist->used++] = file;
1552
1553 return file;
1554 }
1555
1556 static void send_if_directory(int f, struct file_list *flist,
1557 struct file_struct *file,
1558 char *fbuf, unsigned int ol,
1559 int flags)
1560 {
1561 char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
1562
1563 if (S_ISDIR(file->mode)
1564 && !(file->flags & FLAG_MOUNT_DIR) && f_name(file, fbuf)) {
1565 void *save_filters;
1566 unsigned int len = strlen(fbuf);
1567 if (len > 1 && fbuf[len-1] == '/')
1568 fbuf[--len] = '\0';
1569 save_filters = push_local_filters(fbuf, len);
1570 send_directory(f, flist, fbuf, len, flags);
1571 pop_local_filters(save_filters);
1572 fbuf[ol] = '\0';
1573 if (is_dot_dir)
1574 fbuf[ol-1] = '.';
1575 }
1576 }
1577
1578 static int file_compare(const void *file1, const void *file2)
1579 {
1580 return f_name_cmp(*(struct file_struct **)file1,
1581 *(struct file_struct **)file2);
1582 }
1583
1584 /* The guts of a merge-sort algorithm. This was derived from the glibc
1585 * version, but I (Wayne) changed the merge code to do less copying and
1586 * to require only half the amount of temporary memory. */
1587 static void fsort_tmp(struct file_struct **fp, size_t num,
1588 struct file_struct **tmp)
1589 {
1590 struct file_struct **f1, **f2, **t;
1591 size_t n1, n2;
1592
1593 n1 = num / 2;
1594 n2 = num - n1;
1595 f1 = fp;
1596 f2 = fp + n1;
1597
1598 if (n1 > 1)
1599 fsort_tmp(f1, n1, tmp);
1600 if (n2 > 1)
1601 fsort_tmp(f2, n2, tmp);
1602
1603 while (f_name_cmp(*f1, *f2) <= 0) {
1604 if (!--n1)
1605 return;
1606 f1++;
1607 }
1608
1609 t = tmp;
1610 memcpy(t, f1, n1 * PTR_SIZE);
1611
1612 *f1++ = *f2++, n2--;
1613
1614 while (n1 > 0 && n2 > 0) {
1615 if (f_name_cmp(*t, *f2) <= 0)
1616 *f1++ = *t++, n1--;
1617 else
1618 *f1++ = *f2++, n2--;
1619 }
1620
1621 if (n1 > 0)
1622 memcpy(f1, t, n1 * PTR_SIZE);
1623 }
1624
1625 /* This file-struct sorting routine makes sure that any identical names in
1626 * the file list stay in the same order as they were in the original list.
1627 * This is particularly vital in inc_recurse mode where we expect a sort
1628 * on the flist to match the exact order of a sort on the dir_flist. */
1629 static void fsort(struct file_struct **fp, size_t num)
1630 {
1631 if (num <= 1)
1632 return;
1633
1634 if (use_qsort)
1635 qsort(fp, num, PTR_SIZE, file_compare);
1636 else {
1637 struct file_struct **tmp = new_array(struct file_struct *,
1638 (num+1) / 2);
1639 fsort_tmp(fp, num, tmp);
1640 free(tmp);
1641 }
1642 }
1643
1644 /* We take an entire set of sibling dirs from the sorted flist and link them
1645 * into the tree, setting the appropriate parent/child/sibling pointers. */
1646 static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist,
1647 int dir_cnt)
1648 {
1649 int i;
1650 int32 *dp = NULL;
1651 int32 *parent_dp = parent_ndx < 0 ? NULL
1652 : F_DIR_NODE_P(dir_flist->sorted[parent_ndx]);
1653
1654 flist_expand(dir_flist, dir_cnt);
1655 dir_flist->sorted = dir_flist->files;
1656
1657 for (i = 0; dir_cnt; i++) {
1658 struct file_struct *file = from_flist->sorted[i];
1659
1660 if (!S_ISDIR(file->mode))
1661 continue;
1662
1663 dir_flist->files[dir_flist->used++] = file;
1664 dir_cnt--;
1665
1666 if (file->basename[0] == '.' && file->basename[1] == '\0')
1667 continue;
1668
1669 if (dp)
1670 DIR_NEXT_SIBLING(dp) = dir_flist->used - 1;
1671 else if (parent_dp)
1672 DIR_FIRST_CHILD(parent_dp) = dir_flist->used - 1;
1673 else
1674 send_dir_ndx = dir_flist->used - 1;
1675
1676 dp = F_DIR_NODE_P(file);
1677 DIR_PARENT(dp) = parent_ndx;
1678 DIR_FIRST_CHILD(dp) = -1;
1679 }
1680 if (dp)
1681 DIR_NEXT_SIBLING(dp) = -1;
1682 }
1683
1684 static void interpret_stat_error(const char *fname, int is_dir)
1685 {
1686 if (errno == ENOENT) {
1687 io_error |= IOERR_VANISHED;
1688 rprintf(FWARNING, "%s has vanished: %s\n",
1689 is_dir ? "directory" : "file", full_fname(fname));
1690 } else {
1691 io_error |= IOERR_GENERAL;
1692 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
1693 full_fname(fname));
1694 }
1695 }
1696
1697 /* This function is normally called by the sender, but the receiving side also
1698 * calls it from get_dirlist() with f set to -1 so that we just construct the
1699 * file list in memory without sending it over the wire. Also, get_dirlist()
1700 * might call this with f set to -2, which also indicates that local filter
1701 * rules should be ignored. */
1702 static void send_directory(int f, struct file_list *flist, char *fbuf, int len,
1703 int flags)
1704 {
1705 struct dirent *di;
1706 unsigned remainder;
1707 char *p;
1708 DIR *d;
1709 int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
1710 int start = flist->used;
1711 int filter_level = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
1712
1713 assert(flist != NULL);
1714
1715 if (!(d = opendir(fbuf))) {
1716 if (errno == ENOENT) {
1717 if (am_sender) /* Can abuse this for vanished error w/ENOENT: */
1718 interpret_stat_error(fbuf, True);
1719 return;
1720 }
1721 io_error |= IOERR_GENERAL;
1722 rsyserr(FERROR_XFER, errno, "opendir %s failed", full_fname(fbuf));
1723 return;
1724 }
1725
1726 p = fbuf + len;
1727 if (len == 1 && *fbuf == '/')
1728 remainder = MAXPATHLEN - 1;
1729 else if (len < MAXPATHLEN-1) {
1730 *p++ = '/';
1731 *p = '\0';
1732 remainder = MAXPATHLEN - (len + 1);
1733 } else
1734 remainder = 0;
1735
1736 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1737 unsigned name_len;
1738 char *dname = d_name(di);
1739 if (dname[0] == '.' && (dname[1] == '\0'
1740 || (dname[1] == '.' && dname[2] == '\0')))
1741 continue;
1742 name_len = strlcpy(p, dname, remainder);
1743 if (name_len >= remainder) {
1744 char save = fbuf[len];
1745 fbuf[len] = '\0';
1746 io_error |= IOERR_GENERAL;
1747 rprintf(FERROR_XFER,
1748 "filename overflows max-path len by %u: %s/%s\n",
1749 name_len - remainder + 1, fbuf, dname);
1750 fbuf[len] = save;
1751 continue;
1752 }
1753 if (dname[0] == '\0') {
1754 io_error |= IOERR_GENERAL;
1755 rprintf(FERROR_XFER,
1756 "cannot send file with empty name in %s\n",
1757 full_fname(fbuf));
1758 continue;
1759 }
1760
1761 send_file_name(f, flist, fbuf, NULL, flags, filter_level);
1762 }
1763
1764 fbuf[len] = '\0';
1765
1766 if (errno) {
1767 io_error |= IOERR_GENERAL;
1768 rsyserr(FERROR_XFER, errno, "readdir(%s)", full_fname(fbuf));
1769 }
1770
1771 closedir(d);
1772
1773 if (f >= 0 && recurse && !divert_dirs) {
1774 int i, end = flist->used - 1;
1775 /* send_if_directory() bumps flist->used, so use "end". */
1776 for (i = start; i <= end; i++)
1777 send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
1778 }
1779 }
1780
1781 static void send_implied_dirs(int f, struct file_list *flist, char *fname,
1782 char *start, char *limit, int flags, char name_type)
1783 {
1784 static char lastpath[MAXPATHLEN] = "";
1785 static int lastpath_len = 0;
1786 static struct file_struct *lastpath_struct = NULL;
1787 struct file_struct *file;
1788 item_list *relname_list;
1789 relnamecache **rnpp;
1790 int len, need_new_dir, depth = 0;
1791 filter_rule_list save_filter_list = filter_list;
1792
1793 flags = (flags | FLAG_IMPLIED_DIR) & ~(FLAG_TOP_DIR | FLAG_CONTENT_DIR);
1794 filter_list.head = filter_list.tail = NULL; /* Don't filter implied dirs. */
1795
1796 if (inc_recurse) {
1797 if (lastpath_struct && F_PATHNAME(lastpath_struct) == pathname
1798 && lastpath_len == limit - fname
1799 && strncmp(lastpath, fname, lastpath_len) == 0)
1800 need_new_dir = 0;
1801 else
1802 need_new_dir = 1;
1803 } else {
1804 char *tp = fname, *lp = lastpath;
1805 /* Skip any initial directories in our path that we
1806 * have in common with lastpath. */
1807 assert(start == fname);
1808 for ( ; ; tp++, lp++) {
1809 if (tp == limit) {
1810 if (*lp == '/' || *lp == '\0')
1811 goto done;
1812 break;
1813 }
1814 if (*lp != *tp)
1815 break;
1816 if (*tp == '/') {
1817 start = tp;
1818 depth++;
1819 }
1820 }
1821 need_new_dir = 1;
1822 }
1823
1824 if (need_new_dir) {
1825 int save_copy_links = copy_links;
1826 int save_xfer_dirs = xfer_dirs;
1827 char *slash;
1828
1829 copy_links = xfer_dirs = 1;
1830
1831 *limit = '\0';
1832
1833 for (slash = start; (slash = strchr(slash+1, '/')) != NULL; ) {
1834 *slash = '\0';
1835 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1836 depth++;
1837 if (!inc_recurse && file && S_ISDIR(file->mode))
1838 change_local_filter_dir(fname, strlen(fname), depth);
1839 *slash = '/';
1840 }
1841
1842 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1843 if (inc_recurse) {
1844 if (file && !S_ISDIR(file->mode))
1845 file = NULL;
1846 lastpath_struct = file;
1847 } else if (file && S_ISDIR(file->mode))
1848 change_local_filter_dir(fname, strlen(fname), ++depth);
1849
1850 strlcpy(lastpath, fname, sizeof lastpath);
1851 lastpath_len = limit - fname;
1852
1853 *limit = '/';
1854
1855 copy_links = save_copy_links;
1856 xfer_dirs = save_xfer_dirs;
1857
1858 if (!inc_recurse)
1859 goto done;
1860 }
1861
1862 if (!lastpath_struct)
1863 goto done; /* dir must have vanished */
1864
1865 len = strlen(limit+1);
1866 memcpy(&relname_list, F_DIR_RELNAMES_P(lastpath_struct), sizeof relname_list);
1867 if (!relname_list) {
1868 if (!(relname_list = new0(item_list)))
1869 out_of_memory("send_implied_dirs");
1870 memcpy(F_DIR_RELNAMES_P(lastpath_struct), &relname_list, sizeof relname_list);
1871 }
1872 rnpp = EXPAND_ITEM_LIST(relname_list, relnamecache *, 32);
1873 if (!(*rnpp = (relnamecache*)new_array(char, sizeof (relnamecache) + len)))
1874 out_of_memory("send_implied_dirs");
1875 (*rnpp)->name_type = name_type;
1876 strlcpy((*rnpp)->fname, limit+1, len + 1);
1877
1878 done:
1879 filter_list = save_filter_list;
1880 }
1881
1882 static NORETURN void fatal_unsafe_io_error(void)
1883 {
1884 /* This (sadly) can only happen when pushing data because
1885 * the sender does not know about what kind of delete
1886 * is in effect on the receiving side when pulling. */
1887 rprintf(FERROR_XFER, "FATAL I/O ERROR: dying to avoid a --delete-during issue with a pre-3.0.7 receiver.\n");
1888 exit_cleanup(RERR_UNSUPPORTED);
1889 }
1890
1891 static void send1extra(int f, struct file_struct *file, struct file_list *flist)
1892 {
1893 char fbuf[MAXPATHLEN];
1894 item_list *relname_list;
1895 int len, dlen, flags = FLAG_DIVERT_DIRS | FLAG_CONTENT_DIR;
1896 size_t j;
1897
1898 f_name(file, fbuf);
1899 dlen = strlen(fbuf);
1900
1901 if (!change_pathname(file, NULL, 0))
1902 exit_cleanup(RERR_FILESELECT);
1903
1904 change_local_filter_dir(fbuf, dlen, send_dir_depth);
1905
1906 if (file->flags & FLAG_CONTENT_DIR) {
1907 if (one_file_system) {
1908 STRUCT_STAT st;
1909 if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
1910 interpret_stat_error(fbuf, True);
1911 return;
1912 }
1913 filesystem_dev = st.st_dev;
1914 }
1915 send_directory(f, flist, fbuf, dlen, flags);
1916 }
1917
1918 if (!relative_paths)
1919 return;
1920
1921 memcpy(&relname_list, F_DIR_RELNAMES_P(file), sizeof relname_list);
1922 if (!relname_list)
1923 return;
1924
1925 for (j = 0; j < relname_list->count; j++) {
1926 char *slash;
1927 relnamecache *rnp = ((relnamecache**)relname_list->items)[j];
1928 char name_type = rnp->name_type;
1929
1930 fbuf[dlen] = '/';
1931 len = strlcpy(fbuf + dlen + 1, rnp->fname, sizeof fbuf - dlen - 1);
1932 free(rnp);
1933 if (len >= (int)sizeof fbuf)
1934 continue; /* Impossible... */
1935
1936 slash = strchr(fbuf+dlen+1, '/');
1937 if (slash) {
1938 send_implied_dirs(f, flist, fbuf, fbuf+dlen+1, slash, flags, name_type);
1939 continue;
1940 }
1941
1942 if (name_type != NORMAL_NAME) {
1943 STRUCT_STAT st;
1944 if (link_stat(fbuf, &st, 1) != 0) {
1945 interpret_stat_error(fbuf, True);
1946 continue;
1947 }
1948 send_file_name(f, flist, fbuf, &st, FLAG_TOP_DIR | flags, ALL_FILTERS);
1949 } else
1950 send_file_name(f, flist, fbuf, NULL, FLAG_TOP_DIR | flags, ALL_FILTERS);
1951 }
1952
1953 free(relname_list);
1954 }
1955
1956 void send_extra_file_list(int f, int at_least)
1957 {
1958 struct file_list *flist;
1959 int64 start_write;
1960 uint16 prev_flags;
1961 int save_io_error = io_error;
1962
1963 if (flist_eof)
1964 return;
1965
1966 if (at_least < 0)
1967 at_least = file_total - file_old_total + 1;
1968
1969 /* Keep sending data until we have the requested number of
1970 * files in the upcoming file-lists. */
1971 while (file_total - file_old_total < at_least) {
1972 struct file_struct *file = dir_flist->sorted[send_dir_ndx];
1973 int dir_ndx, dstart = stats.num_dirs;
1974 const char *pathname = F_PATHNAME(file);
1975 int32 *dp;
1976
1977 flist = flist_new(0, "send_extra_file_list");
1978 start_write = stats.total_written;
1979
1980 if (unsort_ndx)
1981 dir_ndx = F_NDX(file);
1982 else
1983 dir_ndx = send_dir_ndx;
1984 write_ndx(f, NDX_FLIST_OFFSET - dir_ndx);
1985 flist->parent_ndx = dir_ndx;
1986
1987 send1extra(f, file, flist);
1988 prev_flags = file->flags;
1989 dp = F_DIR_NODE_P(file);
1990
1991 /* If there are any duplicate directory names that follow, we
1992 * send all the dirs together in one file-list. The dir_flist
1993 * tree links all the child subdirs onto the last dup dir. */
1994 while ((dir_ndx = DIR_NEXT_SIBLING(dp)) >= 0
1995 && dir_flist->sorted[dir_ndx]->flags & FLAG_DUPLICATE) {
1996 send_dir_ndx = dir_ndx;
1997 file = dir_flist->sorted[dir_ndx];
1998 /* Try to avoid some duplicate scanning of identical dirs. */
1999 if (F_PATHNAME(file) == pathname && prev_flags & FLAG_CONTENT_DIR)
2000 file->flags &= ~FLAG_CONTENT_DIR;
2001 send1extra(f, file, flist);
2002 prev_flags = file->flags;
2003 dp = F_DIR_NODE_P(file);
2004 }
2005
2006 if (io_error == save_io_error || ignore_errors)
2007 write_byte(f, 0);
2008 else if (use_safe_inc_flist) {
2009 write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
2010 write_varint(f, io_error);
2011 } else {
2012 if (delete_during)
2013 fatal_unsafe_io_error();
2014 write_byte(f, 0);
2015 }
2016
2017 if (need_unsorted_flist) {
2018 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2019 out_of_memory("send_extra_file_list");
2020 memcpy(flist->sorted, flist->files,
2021 flist->used * sizeof (struct file_struct*));
2022 } else
2023 flist->sorted = flist->files;
2024
2025 flist_sort_and_clean(flist, 0);
2026
2027 add_dirs_to_tree(send_dir_ndx, flist, stats.num_dirs - dstart);
2028 flist_done_allocating(flist);
2029
2030 file_total += flist->used;
2031 stats.flist_size += stats.total_written - start_write;
2032 stats.num_files += flist->used;
2033 if (DEBUG_GTE(FLIST, 3))
2034 output_flist(flist);
2035
2036 if (DIR_FIRST_CHILD(dp) >= 0) {
2037 send_dir_ndx = DIR_FIRST_CHILD(dp);
2038 send_dir_depth++;
2039 } else {
2040 while (DIR_NEXT_SIBLING(dp) < 0) {
2041 if ((send_dir_ndx = DIR_PARENT(dp)) < 0) {
2042 write_ndx(f, NDX_FLIST_EOF);
2043 flist_eof = 1;
2044 if (DEBUG_GTE(FLIST, 3))
2045 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2046 change_local_filter_dir(NULL, 0, 0);
2047 goto finish;
2048 }
2049 send_dir_depth--;
2050 file = dir_flist->sorted[send_dir_ndx];
2051 dp = F_DIR_NODE_P(file);
2052 }
2053 send_dir_ndx = DIR_NEXT_SIBLING(dp);
2054 }
2055 }
2056
2057 finish:
2058 if (io_error != save_io_error && protocol_version == 30 && !ignore_errors)
2059 send_msg_int(MSG_IO_ERROR, io_error);
2060 }
2061
2062 struct file_list *send_file_list(int f, int argc, char *argv[])
2063 {
2064 static const char *lastdir;
2065 static int lastdir_len = -1;
2066 int len, dirlen;
2067 STRUCT_STAT st;
2068 char *p, *dir;
2069 struct file_list *flist;
2070 struct timeval start_tv, end_tv;
2071 int64 start_write;
2072 int use_ff_fd = 0;
2073 int disable_buffering, reenable_multiplex = -1;
2074 int flags = recurse ? FLAG_CONTENT_DIR : 0;
2075 int reading_remotely = filesfrom_host != NULL;
2076 int rl_flags = (reading_remotely ? 0 : RL_DUMP_COMMENTS)
2077 #ifdef ICONV_OPTION
2078 | (filesfrom_convert ? RL_CONVERT : 0)
2079 #endif
2080 | (eol_nulls || reading_remotely ? RL_EOL_NULLS : 0);
2081 int implied_dot_dir = 0;
2082
2083 rprintf(FLOG, "building file list\n");
2084 if (show_filelist_p())
2085 start_filelist_progress("building file list");
2086 else if (inc_recurse && INFO_GTE(FLIST, 1) && !am_server)
2087 rprintf(FCLIENT, "sending incremental file list\n");
2088
2089 start_write = stats.total_written;
2090 gettimeofday(&start_tv, NULL);
2091
2092 if (relative_paths && protocol_version >= 30)
2093 implied_dirs = 1; /* We send flagged implied dirs */
2094
2095 #ifdef SUPPORT_HARD_LINKS
2096 if (preserve_hard_links && protocol_version >= 30 && !cur_flist)
2097 init_hard_links();
2098 #endif
2099
2100 flist = cur_flist = flist_new(0, "send_file_list");
2101 if (inc_recurse) {
2102 dir_flist = flist_new(FLIST_TEMP, "send_file_list");
2103 flags |= FLAG_DIVERT_DIRS;
2104 } else
2105 dir_flist = cur_flist;
2106
2107 disable_buffering = io_start_buffering_out(f);
2108 if (filesfrom_fd >= 0) {
2109 if (argv[0] && !change_dir(argv[0], CD_NORMAL)) {
2110 rsyserr(FERROR_XFER, errno, "change_dir %s failed",
2111 full_fname(argv[0]));
2112 exit_cleanup(RERR_FILESELECT);
2113 }
2114 if (protocol_version < 31) {
2115 /* Older protocols send the files-from data w/o packaging
2116 * it in multiplexed I/O packets, so temporarily switch
2117 * to buffered I/O to match this behavior. */
2118 reenable_multiplex = io_end_multiplex_in(MPLX_TO_BUFFERED);
2119 }
2120 use_ff_fd = 1;
2121 }
2122
2123 if (!orig_dir)
2124 orig_dir = strdup(curr_dir);
2125
2126 while (1) {
2127 char fbuf[MAXPATHLEN], *fn, name_type;
2128
2129 if (use_ff_fd) {
2130 if (read_line(filesfrom_fd, fbuf, sizeof fbuf, rl_flags) == 0)
2131 break;
2132 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2133 } else {
2134 if (argc-- == 0)
2135 break;
2136 strlcpy(fbuf, *argv++, MAXPATHLEN);
2137 if (sanitize_paths)
2138 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2139 }
2140
2141 len = strlen(fbuf);
2142 if (relative_paths) {
2143 /* We clean up fbuf below. */
2144 name_type = NORMAL_NAME;
2145 } else if (!len || fbuf[len - 1] == '/') {
2146 if (len == 2 && fbuf[0] == '.') {
2147 /* Turn "./" into just "." rather than "./." */
2148 fbuf[--len] = '\0';
2149 } else {
2150 if (len + 1 >= MAXPATHLEN)
2151 overflow_exit("send_file_list");
2152 fbuf[len++] = '.';
2153 fbuf[len] = '\0';
2154 }
2155 name_type = DOTDIR_NAME;
2156 } else if (len > 1 && fbuf[len-1] == '.' && fbuf[len-2] == '.'
2157 && (len == 2 || fbuf[len-3] == '/')) {
2158 if (len + 2 >= MAXPATHLEN)
2159 overflow_exit("send_file_list");
2160 fbuf[len++] = '/';
2161 fbuf[len++] = '.';
2162 fbuf[len] = '\0';
2163 name_type = DOTDIR_NAME;
2164 } else if (fbuf[len-1] == '.' && (len == 1 || fbuf[len-2] == '/'))
2165 name_type = DOTDIR_NAME;
2166 else
2167 name_type = NORMAL_NAME;
2168
2169 dir = NULL;
2170
2171 if (!relative_paths) {
2172 p = strrchr(fbuf, '/');
2173 if (p) {
2174 *p = '\0';
2175 if (p == fbuf)
2176 dir = "/";
2177 else
2178 dir = fbuf;
2179 len -= p - fbuf + 1;
2180 fn = p + 1;
2181 } else
2182 fn = fbuf;
2183 } else {
2184 if ((p = strstr(fbuf, "/./")) != NULL) {
2185 *p = '\0';
2186 if (p == fbuf)
2187 dir = "/";
2188 else {
2189 dir = fbuf;
2190 clean_fname(dir, 0);
2191 }
2192 fn = p + 3;
2193 while (*fn == '/')
2194 fn++;
2195 if (!*fn)
2196 *--fn = '\0'; /* ensure room for '.' */
2197 } else
2198 fn = fbuf;
2199 /* A leading ./ can be used in relative mode to affect
2200 * the dest dir without its name being in the path. */
2201 if (*fn == '.' && fn[1] == '/' && !implied_dot_dir) {
2202 send_file_name(f, flist, ".", NULL,
2203 (flags | FLAG_IMPLIED_DIR) & ~FLAG_CONTENT_DIR,
2204 ALL_FILTERS);
2205 implied_dot_dir = 1;
2206 }
2207 len = clean_fname(fn, CFN_KEEP_TRAILING_SLASH
2208 | CFN_DROP_TRAILING_DOT_DIR);
2209 if (len == 1) {
2210 if (fn[0] == '/') {
2211 fn = "/.";
2212 len = 2;
2213 name_type = DOTDIR_NAME;
2214 } else if (fn[0] == '.')
2215 name_type = DOTDIR_NAME;
2216 } else if (fn[len-1] == '/') {
2217 fn[--len] = '\0';
2218 if (len == 1 && *fn == '.')
2219 name_type = DOTDIR_NAME;
2220 else
2221 name_type = SLASH_ENDING_NAME;
2222 }
2223 /* Reject a ".." dir in the active part of the path. */
2224 for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
2225 if ((p[2] == '/' || p[2] == '\0')
2226 && (p == fn || p[-1] == '/')) {
2227 rprintf(FERROR,
2228 "found \"..\" dir in relative path: %s\n",
2229 fn);
2230 exit_cleanup(RERR_SYNTAX);
2231 }
2232 }
2233 }
2234
2235 if (!*fn) {
2236 len = 1;
2237 fn = ".";
2238 name_type = DOTDIR_NAME;
2239 }
2240
2241 dirlen = dir ? strlen(dir) : 0;
2242 if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
2243 if (!change_pathname(NULL, dir, -dirlen))
2244 continue;
2245 lastdir = pathname;
2246 lastdir_len = pathname_len;
2247 } else if (!change_pathname(NULL, lastdir, lastdir_len))
2248 continue;
2249
2250 if (fn != fbuf)
2251 memmove(fbuf, fn, len + 1);
2252
2253 if (link_stat(fbuf, &st, copy_dirlinks || name_type != NORMAL_NAME) != 0
2254 || (name_type != DOTDIR_NAME && is_daemon_excluded(fbuf, S_ISDIR(st.st_mode)))
2255 || (relative_paths && path_is_daemon_excluded(fbuf, 1))) {
2256 if (errno != ENOENT || missing_args == 0) {
2257 /* This is a transfer error, but inhibit deletion
2258 * only if we might be omitting an existing file. */
2259 if (errno != ENOENT)
2260 io_error |= IOERR_GENERAL;
2261 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
2262 full_fname(fbuf));
2263 continue;
2264 } else if (missing_args == 1) {
2265 /* Just ignore the arg. */
2266 continue;
2267 } else /* (missing_args == 2) */ {
2268 /* Send the arg as a "missing" entry with
2269 * mode 0, which tells the generator to delete it. */
2270 memset(&st, 0, sizeof st);
2271 }
2272 }
2273
2274 /* A dot-dir should not be excluded! */
2275 if (name_type != DOTDIR_NAME && st.st_mode != 0
2276 && is_excluded(fbuf, S_ISDIR(st.st_mode) != 0, ALL_FILTERS))
2277 continue;
2278
2279 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
2280 rprintf(FINFO, "skipping directory %s\n", fbuf);
2281 continue;
2282 }
2283
2284 if (inc_recurse && relative_paths && *fbuf) {
2285 if ((p = strchr(fbuf+1, '/')) != NULL) {
2286 if (p - fbuf == 1 && *fbuf == '.') {
2287 if ((fn = strchr(p+1, '/')) != NULL)
2288 p = fn;
2289 } else
2290 fn = p;
2291 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, name_type);
2292 if (fn == p)
2293 continue;
2294 }
2295 } else if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
2296 /* Send the implied directories at the start of the
2297 * source spec, so we get their permissions right. */
2298 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, 0);
2299 }
2300
2301 if (one_file_system)
2302 filesystem_dev = st.st_dev;
2303
2304 if (recurse || (xfer_dirs && name_type != NORMAL_NAME)) {
2305 struct file_struct *file;
2306 file = send_file_name(f, flist, fbuf, &st,
2307 FLAG_TOP_DIR | FLAG_CONTENT_DIR | flags,
2308 NO_FILTERS);
2309 if (!file)
2310 continue;
2311 if (inc_recurse) {
2312 if (name_type == DOTDIR_NAME) {
2313 if (send_dir_depth < 0) {
2314 send_dir_depth = 0;
2315 change_local_filter_dir(fbuf, len, send_dir_depth);
2316 }
2317 send_directory(f, flist, fbuf, len, flags);
2318 }
2319 } else
2320 send_if_directory(f, flist, file, fbuf, len, flags);
2321 } else
2322 send_file_name(f, flist, fbuf, &st, flags, NO_FILTERS);
2323 }
2324
2325 if (reenable_multiplex >= 0)
2326 io_start_multiplex_in(reenable_multiplex);
2327
2328 gettimeofday(&end_tv, NULL);
2329 stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2330 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2331 if (stats.flist_buildtime == 0)
2332 stats.flist_buildtime = 1;
2333 start_tv = end_tv;
2334
2335 /* Indicate end of file list */
2336 if (io_error == 0 || ignore_errors)
2337 write_byte(f, 0);
2338 else if (use_safe_inc_flist) {
2339 write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
2340 write_varint(f, io_error);
2341 } else {
2342 if (delete_during && inc_recurse)
2343 fatal_unsafe_io_error();
2344 write_byte(f, 0);
2345 }
2346
2347 #ifdef SUPPORT_HARD_LINKS
2348 if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
2349 idev_destroy();
2350 #endif
2351
2352 if (show_filelist_p())
2353 finish_filelist_progress(flist);
2354
2355 gettimeofday(&end_tv, NULL);
2356 stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2357 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2358
2359 /* When converting names, both sides keep an unsorted file-list array
2360 * because the names will differ on the sending and receiving sides
2361 * (both sides will use the unsorted index number for each item). */
2362
2363 /* Sort the list without removing any duplicates. This allows the
2364 * receiving side to ask for whatever name it kept. For incremental
2365 * recursion mode, the sender marks duplicate dirs so that it can
2366 * send them together in a single file-list. */
2367 if (need_unsorted_flist) {
2368 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2369 out_of_memory("send_file_list");
2370 memcpy(flist->sorted, flist->files,
2371 flist->used * sizeof (struct file_struct*));
2372 } else
2373 flist->sorted = flist->files;
2374 flist_sort_and_clean(flist, 0);
2375 file_total += flist->used;
2376 file_old_total += flist->used;
2377
2378 if (numeric_ids <= 0 && !inc_recurse)
2379 send_id_list(f);
2380
2381 /* send the io_error flag */
2382 if (protocol_version < 30)
2383 write_int(f, ignore_errors ? 0 : io_error);
2384 else if (!use_safe_inc_flist && io_error && !ignore_errors)
2385 send_msg_int(MSG_IO_ERROR, io_error);
2386
2387 if (disable_buffering)
2388 io_end_buffering_out(IOBUF_FREE_BUFS);
2389
2390 stats.flist_size = stats.total_written - start_write;
2391 stats.num_files = flist->used;
2392
2393 if (DEBUG_GTE(FLIST, 3))
2394 output_flist(flist);
2395
2396 if (DEBUG_GTE(FLIST, 2))
2397 rprintf(FINFO, "send_file_list done\n");
2398
2399 if (inc_recurse) {
2400 send_dir_depth = 1;
2401 add_dirs_to_tree(-1, flist, stats.num_dirs);
2402 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2403 flist->parent_ndx = -1;
2404 flist_done_allocating(flist);
2405 if (send_dir_ndx < 0) {
2406 write_ndx(f, NDX_FLIST_EOF);
2407 flist_eof = 1;
2408 if (DEBUG_GTE(FLIST, 3))
2409 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2410 }
2411 else if (file_total == 1) {
2412 /* If we're creating incremental file-lists and there
2413 * was just 1 item in the first file-list, send 1 more
2414 * file-list to check if this is a 1-file xfer. */
2415 send_extra_file_list(f, 1);
2416 }
2417 } else {
2418 flist_eof = 1;
2419 if (DEBUG_GTE(FLIST, 3))
2420 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2421 }
2422
2423 return flist;
2424 }
2425
2426 struct file_list *recv_file_list(int f)
2427 {
2428 struct file_list *flist;
2429 int dstart, flags;
2430 int64 start_read;
2431
2432 if (!first_flist) {
2433 if (show_filelist_p())
2434 start_filelist_progress("receiving file list");
2435 else if (inc_recurse && INFO_GTE(FLIST, 1) && !am_server)
2436 rprintf(FCLIENT, "receiving incremental file list\n");
2437 rprintf(FLOG, "receiving file list\n");
2438 if (usermap)
2439 parse_name_map(usermap, True);
2440 if (groupmap)
2441 parse_name_map(groupmap, False);
2442 }
2443
2444 start_read = stats.total_read;
2445
2446 #ifdef SUPPORT_HARD_LINKS
2447 if (preserve_hard_links && !first_flist)
2448 init_hard_links();
2449 #endif
2450
2451 flist = flist_new(0, "recv_file_list");
2452
2453 if (inc_recurse) {
2454 if (flist->ndx_start == 1)
2455 dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
2456 dstart = dir_flist->used;
2457 } else {
2458 dir_flist = flist;
2459 dstart = 0;
2460 }
2461
2462 while ((flags = read_byte(f)) != 0) {
2463 struct file_struct *file;
2464
2465 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
2466 flags |= read_byte(f) << 8;
2467
2468 if (flags == (XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST)) {
2469 int err;
2470 if (!use_safe_inc_flist) {
2471 rprintf(FERROR, "Invalid flist flag: %x\n", flags);
2472 exit_cleanup(RERR_PROTOCOL);
2473 }
2474 err = read_varint(f);
2475 if (!ignore_errors)
2476 io_error |= err;
2477 break;
2478 }
2479
2480 flist_expand(flist, 1);
2481 file = recv_file_entry(f, flist, flags);
2482
2483 if (S_ISREG(file->mode)) {
2484 /* Already counted */
2485 } else if (S_ISDIR(file->mode)) {
2486 if (inc_recurse) {
2487 flist_expand(dir_flist, 1);
2488 dir_flist->files[dir_flist->used++] = file;
2489 }
2490 stats.num_dirs++;
2491 } else if (S_ISLNK(file->mode))
2492 stats.num_symlinks++;
2493 else if (IS_DEVICE(file->mode))
2494 stats.num_symlinks++;
2495 else
2496 stats.num_specials++;
2497
2498 flist->files[flist->used++] = file;
2499
2500 maybe_emit_filelist_progress(flist->used);
2501
2502 if (DEBUG_GTE(FLIST, 2)) {
2503 char *name = f_name(file, NULL);
2504 rprintf(FINFO, "recv_file_name(%s)\n", NS(name));
2505 }
2506 }
2507 file_total += flist->used;
2508
2509 if (DEBUG_GTE(FLIST, 2))
2510 rprintf(FINFO, "received %d names\n", flist->used);
2511
2512 if (show_filelist_p())
2513 finish_filelist_progress(flist);
2514
2515 if (need_unsorted_flist) {
2516 /* Create an extra array of index pointers that we can sort for
2517 * the generator's use (for wading through the files in sorted
2518 * order and for calling flist_find()). We keep the "files"
2519 * list unsorted for our exchange of index numbers with the
2520 * other side (since their names may not sort the same). */
2521 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2522 out_of_memory("recv_file_list");
2523 memcpy(flist->sorted, flist->files,
2524 flist->used * sizeof (struct file_struct*));
2525 if (inc_recurse && dir_flist->used > dstart) {
2526 static int dir_flist_malloced = 0;
2527 if (dir_flist_malloced < dir_flist->malloced) {
2528 dir_flist->sorted = realloc_array(dir_flist->sorted,
2529 struct file_struct *,
2530 dir_flist->malloced);
2531 dir_flist_malloced = dir_flist->malloced;
2532 }
2533 memcpy(dir_flist->sorted + dstart, dir_flist->files + dstart,
2534 (dir_flist->used - dstart) * sizeof (struct file_struct*));
2535 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2536 }
2537 } else {
2538 flist->sorted = flist->files;
2539 if (inc_recurse && dir_flist->used > dstart) {
2540 dir_flist->sorted = dir_flist->files;
2541 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2542 }
2543 }
2544
2545 if (inc_recurse)
2546 flist_done_allocating(flist);
2547 else if (f >= 0) {
2548 recv_id_list(f, flist);
2549 flist_eof = 1;
2550 if (DEBUG_GTE(FLIST, 3))
2551 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2552 }
2553
2554 flist_sort_and_clean(flist, relative_paths);
2555
2556 if (protocol_version < 30) {
2557 /* Recv the io_error flag */
2558 int err = read_int(f);
2559 if (!ignore_errors)
2560 io_error |= err;
2561 } else if (inc_recurse && flist->ndx_start == 1) {
2562 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2563 flist->parent_ndx = -1;
2564 }
2565
2566 if (DEBUG_GTE(FLIST, 3))
2567 output_flist(flist);
2568
2569 if (DEBUG_GTE(FLIST, 2))
2570 rprintf(FINFO, "recv_file_list done\n");
2571
2572 stats.flist_size += stats.total_read - start_read;
2573 stats.num_files += flist->used;
2574
2575 return flist;
2576 }
2577
2578 /* This is only used once by the receiver if the very first file-list
2579 * has exactly one item in it. */
2580 void recv_additional_file_list(int f)
2581 {
2582 struct file_list *flist;
2583 int ndx = read_ndx(f);
2584 if (ndx == NDX_FLIST_EOF) {
2585 flist_eof = 1;
2586 if (DEBUG_GTE(FLIST, 3))
2587 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2588 change_local_filter_dir(NULL, 0, 0);
2589 } else {
2590 ndx = NDX_FLIST_OFFSET - ndx;
2591 if (ndx < 0 || ndx >= dir_flist->used) {
2592 ndx = NDX_FLIST_OFFSET - ndx;
2593 rprintf(FERROR,
2594 "[%s] Invalid dir index: %d (%d - %d)\n",
2595 who_am_i(), ndx, NDX_FLIST_OFFSET,
2596 NDX_FLIST_OFFSET - dir_flist->used + 1);
2597 exit_cleanup(RERR_PROTOCOL);
2598 }
2599 if (DEBUG_GTE(FLIST, 3)) {
2600 rprintf(FINFO, "[%s] receiving flist for dir %d\n",
2601 who_am_i(), ndx);
2602 }
2603 flist = recv_file_list(f);
2604 flist->parent_ndx = ndx;
2605 }
2606 }
2607
2608 /* Search for an identically-named item in the file list. Note that the
2609 * items must agree in their directory-ness, or no match is returned. */
2610 int flist_find(struct file_list *flist, struct file_struct *f)
2611 {
2612 int low = flist->low, high = flist->high;
2613 int diff, mid, mid_up;
2614
2615 while (low <= high) {
2616 mid = (low + high) / 2;
2617 if (F_IS_ACTIVE(flist->sorted[mid]))
2618 mid_up = mid;
2619 else {
2620 /* Scan for the next non-empty entry using the cached
2621 * distance values. If the value isn't fully up-to-
2622 * date, update it. */
2623 mid_up = mid + F_DEPTH(flist->sorted[mid]);
2624 if (!F_IS_ACTIVE(flist->sorted[mid_up])) {
2625 do {
2626 mid_up += F_DEPTH(flist->sorted[mid_up]);
2627 } while (!F_IS_ACTIVE(flist->sorted[mid_up]));
2628 F_DEPTH(flist->sorted[mid]) = mid_up - mid;
2629 }
2630 if (mid_up > high) {
2631 /* If there's nothing left above us, set high to
2632 * a non-empty entry below us and continue. */
2633 high = mid - (int)flist->sorted[mid]->len32;
2634 if (!F_IS_ACTIVE(flist->sorted[high])) {
2635 do {
2636 high -= (int)flist->sorted[high]->len32;
2637 } while (!F_IS_ACTIVE(flist->sorted[high]));
2638 flist->sorted[mid]->len32 = mid - high;
2639 }
2640 continue;
2641 }
2642 }
2643 diff = f_name_cmp(flist->sorted[mid_up], f);
2644 if (diff == 0) {
2645 if (protocol_version < 29
2646 && S_ISDIR(flist->sorted[mid_up]->mode)
2647 != S_ISDIR(f->mode))
2648 return -1;
2649 return mid_up;
2650 }
2651 if (diff < 0)
2652 low = mid_up + 1;
2653 else
2654 high = mid - 1;
2655 }
2656 return -1;
2657 }
2658
2659 /* Search for an identically-named item in the file list. Differs from
2660 * flist_find in that an item that agrees with "f" in directory-ness is
2661 * preferred but one that does not is still found. */
2662 int flist_find_ignore_dirness(struct file_list *flist, struct file_struct *f)
2663 {
2664 mode_t save_mode;
2665 int ndx;
2666
2667 /* First look for an item that agrees in directory-ness. */
2668 ndx = flist_find(flist, f);
2669 if (ndx >= 0)
2670 return ndx;
2671
2672 /* Temporarily flip f->mode to look for an item of opposite
2673 * directory-ness. */
2674 save_mode = f->mode;
2675 f->mode = S_ISDIR(f->mode) ? S_IFREG : S_IFDIR;
2676 ndx = flist_find(flist, f);
2677 f->mode = save_mode;
2678 return ndx;
2679 }
2680
2681 /*
2682 * Free up any resources a file_struct has allocated
2683 * and clear the file.
2684 */
2685 void clear_file(struct file_struct *file)
2686 {
2687 /* The +1 zeros out the first char of the basename. */
2688 memset(file, 0, FILE_STRUCT_LEN + 1);
2689 /* In an empty entry, F_DEPTH() is an offset to the next non-empty
2690 * entry. Likewise for len32 in the opposite direction. We assume
2691 * that we're alone for now since flist_find() will adjust the counts
2692 * it runs into that aren't up-to-date. */
2693 file->len32 = F_DEPTH(file) = 1;
2694 }
2695
2696 /* Allocate a new file list. */
2697 struct file_list *flist_new(int flags, char *msg)
2698 {
2699 struct file_list *flist;
2700
2701 if (!(flist = new0(struct file_list)))
2702 out_of_memory(msg);
2703
2704 if (flags & FLIST_TEMP) {
2705 if (!(flist->file_pool = pool_create(SMALL_EXTENT, 0,
2706 out_of_memory,
2707 POOL_INTERN)))
2708 out_of_memory(msg);
2709 } else {
2710 /* This is a doubly linked list with prev looping back to
2711 * the end of the list, but the last next pointer is NULL. */
2712 if (!first_flist) {
2713 flist->file_pool = pool_create(NORMAL_EXTENT, 0,
2714 out_of_memory,
2715 POOL_INTERN);
2716 if (!flist->file_pool)
2717 out_of_memory(msg);
2718
2719 flist->ndx_start = flist->flist_num = inc_recurse ? 1 : 0;
2720
2721 first_flist = cur_flist = flist->prev = flist;
2722 } else {
2723 struct file_list *prev = first_flist->prev;
2724
2725 flist->file_pool = first_flist->file_pool;
2726
2727 flist->ndx_start = prev->ndx_start + prev->used + 1;
2728 flist->flist_num = prev->flist_num + 1;
2729
2730 flist->prev = prev;
2731 prev->next = first_flist->prev = flist;
2732 }
2733 flist->pool_boundary = pool_boundary(flist->file_pool, 0);
2734 flist_cnt++;
2735 }
2736
2737 return flist;
2738 }
2739
2740 /* Free up all elements in a flist. */
2741 void flist_free(struct file_list *flist)
2742 {
2743 if (!flist->prev) {
2744 /* Was FLIST_TEMP dir-list. */
2745 } else if (flist == flist->prev) {
2746 first_flist = cur_flist = NULL;
2747 file_total = 0;
2748 flist_cnt = 0;
2749 } else {
2750 if (flist == cur_flist)
2751 cur_flist = flist->next;
2752 if (flist == first_flist)
2753 first_flist = first_flist->next;
2754 else {
2755 flist->prev->next = flist->next;
2756 if (!flist->next)
2757 flist->next = first_flist;
2758 }
2759 flist->next->prev = flist->prev;
2760 file_total -= flist->used;
2761 flist_cnt--;
2762 }
2763
2764 if (!flist->prev || !flist_cnt)
2765 pool_destroy(flist->file_pool);
2766 else
2767 pool_free_old(flist->file_pool, flist->pool_boundary);
2768
2769 if (flist->sorted && flist->sorted != flist->files)
2770 free(flist->sorted);
2771 free(flist->files);
2772 free(flist);
2773 }
2774
2775 /* This routine ensures we don't have any duplicate names in our file list.
2776 * duplicate names can cause corruption because of the pipelining. */
2777 static void flist_sort_and_clean(struct file_list *flist, int strip_root)
2778 {
2779 char fbuf[MAXPATHLEN];
2780 int i, prev_i;
2781
2782 if (!flist)
2783 return;
2784 if (flist->used == 0) {
2785 flist->high = -1;
2786 flist->low = 0;
2787 return;
2788 }
2789
2790 fsort(flist->sorted, flist->used);
2791
2792 if (!am_sender || inc_recurse) {
2793 for (i = prev_i = 0; i < flist->used; i++) {
2794 if (F_IS_ACTIVE(flist->sorted[i])) {
2795 prev_i = i;
2796 break;
2797 }
2798 }
2799 flist->low = prev_i;
2800 } else {
2801 i = prev_i = flist->used - 1;
2802 flist->low = 0;
2803 }
2804
2805 while (++i < flist->used) {
2806 int j;
2807 struct file_struct *file = flist->sorted[i];
2808
2809 if (!F_IS_ACTIVE(file))
2810 continue;
2811 if (f_name_cmp(file, flist->sorted[prev_i]) == 0)
2812 j = prev_i;
2813 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
2814 int save_mode = file->mode;
2815 /* Make sure that this directory doesn't duplicate a
2816 * non-directory earlier in the list. */
2817 flist->high = prev_i;
2818 file->mode = S_IFREG;
2819 j = flist_find(flist, file);
2820 file->mode = save_mode;
2821 } else
2822 j = -1;
2823 if (j >= 0) {
2824 int keep, drop;
2825 /* If one is a dir and the other is not, we want to
2826 * keep the dir because it might have contents in the
2827 * list. Otherwise keep the first one. */
2828 if (S_ISDIR(file->mode)) {
2829 struct file_struct *fp = flist->sorted[j];
2830 if (!S_ISDIR(fp->mode))
2831 keep = i, drop = j;
2832 else {
2833 if (am_sender)
2834 file->flags |= FLAG_DUPLICATE;
2835 else { /* Make sure we merge our vital flags. */
2836 fp->flags |= file->flags & (FLAG_TOP_DIR|FLAG_CONTENT_DIR);
2837 fp->flags &= file->flags | ~FLAG_IMPLIED_DIR;
2838 }
2839 keep = j, drop = i;
2840 }
2841 } else
2842 keep = j, drop = i;
2843
2844 if (!am_sender) {
2845 if (DEBUG_GTE(DUP, 1)) {
2846 rprintf(FINFO,
2847 "removing duplicate name %s from file list (%d)\n",
2848 f_name(file, fbuf), drop + flist->ndx_start);
2849 }
2850 clear_file(flist->sorted[drop]);
2851 }
2852
2853 if (keep == i) {
2854 if (flist->low == drop) {
2855 for (j = drop + 1;
2856 j < i && !F_IS_ACTIVE(flist->sorted[j]);
2857 j++) {}
2858 flist->low = j;
2859 }
2860 prev_i = i;
2861 }
2862 } else
2863 prev_i = i;
2864 }
2865 flist->high = prev_i;
2866
2867 if (strip_root) {
2868 /* We need to strip off the leading slashes for relative
2869 * paths, but this must be done _after_ the sorting phase. */
2870 for (i = flist->low; i <= flist->high; i++) {
2871 struct file_struct *file = flist->sorted[i];
2872
2873 if (!file->dirname)
2874 continue;
2875 while (*file->dirname == '/')
2876 file->dirname++;
2877 if (!*file->dirname)
2878 file->dirname = NULL;
2879 }
2880 }
2881
2882 if (prune_empty_dirs && !am_sender) {
2883 int j, prev_depth = 0;
2884
2885 prev_i = 0; /* It's OK that this isn't really true. */
2886
2887 for (i = flist->low; i <= flist->high; i++) {
2888 struct file_struct *fp, *file = flist->sorted[i];
2889
2890 /* This temporarily abuses the F_DEPTH() value for a
2891 * directory that is in a chain that might get pruned.
2892 * We restore the old value if it gets a reprieve. */
2893 if (S_ISDIR(file->mode) && F_DEPTH(file)) {
2894 /* Dump empty dirs when coming back down. */
2895 for (j = prev_depth; j >= F_DEPTH(file); j--) {
2896 fp = flist->sorted[prev_i];
2897 if (F_DEPTH(fp) >= 0)
2898 break;
2899 prev_i = -F_DEPTH(fp)-1;
2900 clear_file(fp);
2901 }
2902 prev_depth = F_DEPTH(file);
2903 if (is_excluded(f_name(file, fbuf), 1,
2904 ALL_FILTERS)) {
2905 /* Keep dirs through this dir. */
2906 for (j = prev_depth-1; ; j--) {
2907 fp = flist->sorted[prev_i];
2908 if (F_DEPTH(fp) >= 0)
2909 break;
2910 prev_i = -F_DEPTH(fp)-1;
2911 F_DEPTH(fp) = j;
2912 }
2913 } else
2914 F_DEPTH(file) = -prev_i-1;
2915 prev_i = i;
2916 } else {
2917 /* Keep dirs through this non-dir. */
2918 for (j = prev_depth; ; j--) {
2919 fp = flist->sorted[prev_i];
2920 if (F_DEPTH(fp) >= 0)
2921 break;
2922 prev_i = -F_DEPTH(fp)-1;
2923 F_DEPTH(fp) = j;
2924 }
2925 }
2926 }
2927 /* Dump all remaining empty dirs. */
2928 while (1) {
2929 struct file_struct *fp = flist->sorted[prev_i];
2930 if (F_DEPTH(fp) >= 0)
2931 break;
2932 prev_i = -F_DEPTH(fp)-1;
2933 clear_file(fp);
2934 }
2935
2936 for (i = flist->low; i <= flist->high; i++) {
2937 if (F_IS_ACTIVE(flist->sorted[i]))
2938 break;
2939 }
2940 flist->low = i;
2941 for (i = flist->high; i >= flist->low; i--) {
2942 if (F_IS_ACTIVE(flist->sorted[i]))
2943 break;
2944 }
2945 flist->high = i;
2946 }
2947 }
2948
2949 static void output_flist(struct file_list *flist)
2950 {
2951 char uidbuf[16], gidbuf[16], depthbuf[16];
2952 struct file_struct *file;
2953 const char *root, *dir, *slash, *name, *trail;
2954 const char *who = who_am_i();
2955 int i;
2956
2957 rprintf(FINFO, "[%s] flist start=%d, used=%d, low=%d, high=%d\n",
2958 who, flist->ndx_start, flist->used, flist->low, flist->high);
2959 for (i = 0; i < flist->used; i++) {
2960 file = flist->files[i];
2961 if ((am_root || am_sender) && uid_ndx) {
2962 snprintf(uidbuf, sizeof uidbuf, " uid=%u",
2963 F_OWNER(file));
2964 } else
2965 *uidbuf = '\0';
2966 if (gid_ndx) {
2967 static char parens[] = "(\0)\0\0\0";
2968 char *pp = parens + (file->flags & FLAG_SKIP_GROUP ? 0 : 3);
2969 snprintf(gidbuf, sizeof gidbuf, " gid=%s%u%s",
2970 pp, F_GROUP(file), pp + 2);
2971 } else
2972 *gidbuf = '\0';
2973 if (!am_sender)
2974 snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
2975 if (F_IS_ACTIVE(file)) {
2976 root = am_sender ? NS(F_PATHNAME(file)) : depthbuf;
2977 if ((dir = file->dirname) == NULL)
2978 dir = slash = "";
2979 else
2980 slash = "/";
2981 name = file->basename;
2982 trail = S_ISDIR(file->mode) ? "/" : "";
2983 } else
2984 root = dir = slash = name = trail = "";
2985 rprintf(FINFO,
2986 "[%s] i=%d %s %s%s%s%s mode=0%o len=%s%s%s flags=%x\n",
2987 who, i + flist->ndx_start,
2988 root, dir, slash, name, trail,
2989 (int)file->mode, comma_num(F_LENGTH(file)),
2990 uidbuf, gidbuf, file->flags);
2991 }
2992 }
2993
2994 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
2995 enum fnc_type { t_PATH, t_ITEM };
2996
2997 static int found_prefix;
2998
2999 /* Compare the names of two file_struct entities, similar to how strcmp()
3000 * would do if it were operating on the joined strings.
3001 *
3002 * Some differences beginning with protocol_version 29: (1) directory names
3003 * are compared with an assumed trailing slash so that they compare in a
3004 * way that would cause them to sort immediately prior to any content they
3005 * may have; (2) a directory of any name compares after a non-directory of
3006 * any name at the same depth; (3) a directory with name "." compares prior
3007 * to anything else. These changes mean that a directory and a non-dir
3008 * with the same name will not compare as equal (protocol_version >= 29).
3009 *
3010 * The dirname component can be an empty string, but the basename component
3011 * cannot (and never is in the current codebase). The basename component
3012 * may be NULL (for a removed item), in which case it is considered to be
3013 * after any existing item. */
3014 int f_name_cmp(const struct file_struct *f1, const struct file_struct *f2)
3015 {
3016 int dif;
3017 const uchar *c1, *c2;
3018 enum fnc_state state1, state2;
3019 enum fnc_type type1, type2;
3020 enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
3021
3022 if (!f1 || !F_IS_ACTIVE(f1)) {
3023 if (!f2 || !F_IS_ACTIVE(f2))
3024 return 0;
3025 return -1;
3026 }
3027 if (!f2 || !F_IS_ACTIVE(f2))
3028 return 1;
3029
3030 c1 = (uchar*)f1->dirname;
3031 c2 = (uchar*)f2->dirname;
3032 if (c1 == c2)
3033 c1 = c2 = NULL;
3034 if (!c1) {
3035 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
3036 c1 = (const uchar*)f1->basename;
3037 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
3038 type1 = t_ITEM;
3039 state1 = s_TRAILING;
3040 c1 = (uchar*)"";
3041 } else
3042 state1 = s_BASE;
3043 } else {
3044 type1 = t_path;
3045 state1 = s_DIR;
3046 }
3047 if (!c2) {
3048 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
3049 c2 = (const uchar*)f2->basename;
3050 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
3051 type2 = t_ITEM;
3052 state2 = s_TRAILING;
3053 c2 = (uchar*)"";
3054 } else
3055 state2 = s_BASE;
3056 } else {
3057 type2 = t_path;
3058 state2 = s_DIR;
3059 }
3060
3061 if (type1 != type2)
3062 return type1 == t_PATH ? 1 : -1;
3063
3064 do {
3065 if (!*c1) {
3066 switch (state1) {
3067 case s_DIR:
3068 state1 = s_SLASH;
3069 c1 = (uchar*)"/";
3070 break;
3071 case s_SLASH:
3072 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
3073 c1 = (const uchar*)f1->basename;
3074 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
3075 type1 = t_ITEM;
3076 state1 = s_TRAILING;
3077 c1 = (uchar*)"";
3078 } else
3079 state1 = s_BASE;
3080 break;
3081 case s_BASE:
3082 state1 = s_TRAILING;
3083 if (type1 == t_PATH) {
3084 c1 = (uchar*)"/";
3085 break;
3086 }
3087 /* FALL THROUGH */
3088 case s_TRAILING:
3089 type1 = t_ITEM;
3090 break;
3091 }
3092 if (*c2 && type1 != type2)
3093 return type1 == t_PATH ? 1 : -1;
3094 }
3095 if (!*c2) {
3096 switch (state2) {
3097 case s_DIR:
3098 state2 = s_SLASH;
3099 c2 = (uchar*)"/";
3100 break;
3101 case s_SLASH:
3102 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
3103 c2 = (const uchar*)f2->basename;
3104 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
3105 type2 = t_ITEM;
3106 state2 = s_TRAILING;
3107 c2 = (uchar*)"";
3108 } else
3109 state2 = s_BASE;
3110 break;
3111 case s_BASE:
3112 state2 = s_TRAILING;
3113 if (type2 == t_PATH) {
3114 c2 = (uchar*)"/";
3115 break;
3116 }
3117 /* FALL THROUGH */
3118 case s_TRAILING:
3119 found_prefix = 1;
3120 if (!*c1)
3121 return 0;
3122 type2 = t_ITEM;
3123 break;
3124 }
3125 if (type1 != type2)
3126 return type1 == t_PATH ? 1 : -1;
3127 }
3128 } while ((dif = (int)*c1++ - (int)*c2++) == 0);
3129
3130 return dif;
3131 }
3132
3133 /* Returns 1 if f1's filename has all of f2's filename as a prefix. This does
3134 * not match if f2's basename is not an exact match of a path element in f1.
3135 * E.g. /path/foo is not a prefix of /path/foobar/baz, but /path/foobar is. */
3136 int f_name_has_prefix(const struct file_struct *f1, const struct file_struct *f2)
3137 {
3138 found_prefix = 0;
3139 f_name_cmp(f1, f2);
3140 return found_prefix;
3141 }
3142
3143 char *f_name_buf(void)
3144 {
3145 static char names[5][MAXPATHLEN];
3146 static unsigned int n;
3147
3148 n = (n + 1) % (sizeof names / sizeof names[0]);
3149
3150 return names[n];
3151 }
3152
3153 /* Return a copy of the full filename of a flist entry, using the indicated
3154 * buffer or one of 5 static buffers if fbuf is NULL. No size-checking is
3155 * done because we checked the size when creating the file_struct entry.
3156 */
3157 char *f_name(const struct file_struct *f, char *fbuf)
3158 {
3159 if (!f || !F_IS_ACTIVE(f))
3160 return NULL;
3161
3162 if (!fbuf)
3163 fbuf = f_name_buf();
3164
3165 if (f->dirname) {
3166 int len = strlen(f->dirname);
3167 memcpy(fbuf, f->dirname, len);
3168 fbuf[len] = '/';
3169 strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
3170 } else
3171 strlcpy(fbuf, f->basename, MAXPATHLEN);
3172
3173 return fbuf;
3174 }
3175
3176 /* Do a non-recursive scan of the named directory, possibly ignoring all
3177 * exclude rules except for the daemon's. If "dlen" is >=0, it is the length
3178 * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
3179 * buffer (the functions we call will append names onto the end, but the old
3180 * dir value will be restored on exit). */
3181 struct file_list *get_dirlist(char *dirname, int dlen, int flags)
3182 {
3183 struct file_list *dirlist;
3184 char dirbuf[MAXPATHLEN];
3185 int save_recurse = recurse;
3186 int save_xfer_dirs = xfer_dirs;
3187 int save_prune_empty_dirs = prune_empty_dirs;
3188 int senddir_fd = flags & GDL_IGNORE_FILTER_RULES ? -2 : -1;
3189
3190 if (dlen < 0) {
3191 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
3192 if (dlen >= MAXPATHLEN)
3193 return NULL;
3194 dirname = dirbuf;
3195 }
3196
3197 dirlist = flist_new(FLIST_TEMP, "get_dirlist");
3198
3199 recurse = 0;
3200 xfer_dirs = 1;
3201 send_directory(senddir_fd, dirlist, dirname, dlen, FLAG_CONTENT_DIR);
3202 xfer_dirs = save_xfer_dirs;
3203 recurse = save_recurse;
3204 if (INFO_GTE(PROGRESS, 1))
3205 flist_count_offset += dirlist->used;
3206
3207 prune_empty_dirs = 0;
3208 dirlist->sorted = dirlist->files;
3209 flist_sort_and_clean(dirlist, 0);
3210 prune_empty_dirs = save_prune_empty_dirs;
3211
3212 if (DEBUG_GTE(FLIST, 3))
3213 output_flist(dirlist);
3214
3215 return dirlist;
3216 }