flist.c

   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) 2002-2008 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 "io.h"
  27
  28 extern int am_root;
  29 extern int am_server;
  30 extern int am_daemon;
  31 extern int am_sender;
  32 extern int am_generator;
  33 extern int inc_recurse;
  34 extern int always_checksum;
  35 extern int module_id;
  36 extern int ignore_errors;
  37 extern int numeric_ids;
  38 extern int recurse;
  39 extern int use_qsort;
  40 extern int xfer_dirs;
  41 extern int filesfrom_fd;
  42 extern int one_file_system;
  43 extern int copy_dirlinks;
  44 extern int keep_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 uid_ndx;
  54 extern int gid_ndx;
  55 extern int eol_nulls;
  56 extern int relative_paths;
  57 extern int implied_dirs;
  58 extern int file_extra_cnt;
  59 extern int ignore_perishable;
  60 extern int non_perishable_cnt;
  61 extern int prune_empty_dirs;
  62 extern int copy_links;
  63 extern int copy_unsafe_links;
  64 extern int protocol_version;
  65 extern int sanitize_paths;
  66 extern int munge_symlinks;
  67 extern int need_unsorted_flist;
  68 extern int output_needs_newline;
  69 extern int sender_keeps_checksum;
  70 extern int unsort_ndx;
  71 extern struct stats stats;
  72 extern char *filesfrom_host;
  73
  74 extern char curr_dir[MAXPATHLEN];
  75
  76 extern struct chmod_mode_struct *chmod_modes;
  77
  78 extern struct filter_list_struct filter_list;
  79 extern struct filter_list_struct daemon_filter_list;
  80
  81 #ifdef ICONV_OPTION
  82 extern int filesfrom_convert;
  83 extern iconv_t ic_send, ic_recv;
  84 #endif
  85
  86 #define PTR_SIZE (sizeof (struct file_struct *))
  87
  88 int io_error;
  89 int checksum_len;
  90 dev_t filesystem_dev; /* used to implement -x */
  91
  92 struct file_list *cur_flist, *first_flist, *dir_flist;
  93 int send_dir_ndx = -1, send_dir_depth = -1;
  94 int flist_cnt = 0; /* how many (non-tmp) file list objects exist */
  95 int file_total = 0; /* total of all active items over all file-lists */
  96 int flist_eof = 0; /* all the file-lists are now known */
  97
  98 #define NORMAL_NAME 0
  99 #define SLASH_ENDING_NAME 1
 100 #define DOTDIR_NAME 2
 101
 102 /* Starting from protocol version 26, we always use 64-bit ino_t and dev_t
 103  * internally, even if this platform does not allow files to have 64-bit inums.
 104  * The only exception is if we're on a platform with no 64-bit type at all.
 105  *
 106  * Because we use read_longint() to get these off the wire, if you transfer
 107  * devices or (for protocols < 30) hardlinks with dev or inum > 2**32 to a
 108  * machine with no 64-bit types then you will get an overflow error.
 109  *
 110  * Note that if you transfer devices from a 64-bit-devt machine (say, Solaris)
 111  * to a 32-bit-devt machine (say, Linux-2.2/x86) then the device numbers will
 112  * be truncated.  But it's a kind of silly thing to do anyhow. */
 113
 114 /* The tmp_* vars are used as a cache area by make_file() to store data
 115  * that the sender doesn't need to remember in its file list.  The data
 116  * will survive just long enough to be used by send_file_entry(). */
 117 static dev_t tmp_rdev;
 118 #ifdef SUPPORT_HARD_LINKS
 119 static int64 tmp_dev, tmp_ino;
 120 #endif
 121 static char tmp_sum[MAX_DIGEST_LEN];
 122
 123 static char empty_sum[MAX_DIGEST_LEN];
 124 static int flist_count_offset; /* for --delete --progress */
 125 static int dir_count = 0;
 126
 127 static void flist_sort_and_clean(struct file_list *flist, int strip_root);
 128 static void output_flist(struct file_list *flist);
 129
 130 void init_flist(void)
 131 {
 132         if (DEBUG_GTE(FLIST, 4)) {
 133                 rprintf(FINFO, "FILE_STRUCT_LEN=%d, EXTRA_LEN=%d\n",
 134                         (int)FILE_STRUCT_LEN, (int)EXTRA_LEN);
 135         }
 136         checksum_len = protocol_version < 21 ? 2
 137                      : protocol_version < 30 ? MD4_DIGEST_LEN
 138                      : MD5_DIGEST_LEN;
 139 }
 140
 141 static int show_filelist_p(void)
 142 {
 143         return INFO_GTE(FLIST, 1) && xfer_dirs && !am_server && !inc_recurse;
 144 }
 145
 146 static void start_filelist_progress(char *kind)
 147 {
 148         rprintf(FCLIENT, "%s ... ", kind);
 149         output_needs_newline = 1;
 150         rflush(FINFO);
 151 }
 152
 153 static void emit_filelist_progress(int count)
 154 {
 155         rprintf(FCLIENT, " %d files...\r", count);
 156 }
 157
 158 static void maybe_emit_filelist_progress(int count)
 159 {
 160         if (INFO_GTE(FLIST, 2) && show_filelist_p() && (count % 100) == 0)
 161                 emit_filelist_progress(count);
 162 }
 163
 164 static void finish_filelist_progress(const struct file_list *flist)
 165 {
 166         if (INFO_GTE(FLIST, 2)) {
 167                 /* This overwrites the progress line */
 168                 rprintf(FINFO, "%d file%sto consider\n",
 169                         flist->used, flist->used == 1 ? " " : "s ");
 170         } else {
 171                 output_needs_newline = 0;
 172                 rprintf(FINFO, "done\n");
 173         }
 174 }
 175
 176 void show_flist_stats(void)
 177 {
 178         /* Nothing yet */
 179 }
 180
 181 /* Stat either a symlink or its referent, depending on the settings of
 182  * copy_links, copy_unsafe_links, etc.  Returns -1 on error, 0 on success.
 183  *
 184  * If path is the name of a symlink, then the linkbuf buffer (which must hold
 185  * MAXPATHLEN chars) will be set to the symlink's target string.
 186  *
 187  * The stat structure pointed to by stp will contain information about the
 188  * link or the referent as appropriate, if they exist. */
 189 static int readlink_stat(const char *path, STRUCT_STAT *stp, char *linkbuf)
 190 {
 191 #ifdef SUPPORT_LINKS
 192         if (link_stat(path, stp, copy_dirlinks) < 0)
 193                 return -1;
 194         if (S_ISLNK(stp->st_mode)) {
 195                 int llen = readlink(path, linkbuf, MAXPATHLEN - 1);
 196                 if (llen < 0)
 197                         return -1;
 198                 linkbuf[llen] = '\0';
 199                 if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
 200                         if (INFO_GTE(SYMSAFE, 1)) {
 201                                 rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
 202                                         path, linkbuf);
 203                         }
 204                         return x_stat(path, stp, NULL);
 205                 }
 206                 if (munge_symlinks && am_sender && llen > SYMLINK_PREFIX_LEN
 207                  && strncmp(linkbuf, SYMLINK_PREFIX, SYMLINK_PREFIX_LEN) == 0) {
 208                         memmove(linkbuf, linkbuf + SYMLINK_PREFIX_LEN,
 209                                 llen - SYMLINK_PREFIX_LEN + 1);
 210                 }
 211         }
 212         return 0;
 213 #else
 214         return x_stat(path, stp, NULL);
 215 #endif
 216 }
 217
 218 int link_stat(const char *path, STRUCT_STAT *stp, int follow_dirlinks)
 219 {
 220 #ifdef SUPPORT_LINKS
 221         if (copy_links)
 222                 return x_stat(path, stp, NULL);
 223         if (x_lstat(path, stp, NULL) < 0)
 224                 return -1;
 225         if (follow_dirlinks && S_ISLNK(stp->st_mode)) {
 226                 STRUCT_STAT st;
 227                 if (x_stat(path, &st, NULL) == 0 && S_ISDIR(st.st_mode))
 228                         *stp = st;
 229         }
 230         return 0;
 231 #else
 232         return x_stat(path, stp, NULL);
 233 #endif
 234 }
 235
 236 static inline int is_daemon_excluded(const char *fname, int is_dir)
 237 {
 238         if (daemon_filter_list.head
 239          && check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
 240                 errno = ENOENT;
 241                 return 1;
 242         }
 243         return 0;
 244 }
 245
 246 static inline int path_is_daemon_excluded(char *path, int ignore_filename)
 247 {
 248         if (daemon_filter_list.head) {
 249                 char *slash = path;
 250
 251                 while ((slash = strchr(slash+1, '/')) != NULL) {
 252                         int ret;
 253                         *slash = '\0';
 254                         ret = check_filter(&daemon_filter_list, FLOG, path, 1);
 255                         *slash = '/';
 256                         if (ret < 0) {
 257                                 errno = ENOENT;
 258                                 return 1;
 259                         }
 260                 }
 261
 262                 if (!ignore_filename
 263                  && check_filter(&daemon_filter_list, FLOG, path, 1) < 0) {
 264                         errno = ENOENT;
 265                         return 1;
 266                 }
 267         }
 268
 269         return 0;
 270 }
 271
 272 /* This function is used to check if a file should be included/excluded
 273  * from the list of files based on its name and type etc.  The value of
 274  * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
 275 static int is_excluded(const char *fname, int is_dir, int filter_level)
 276 {
 277 #if 0 /* This currently never happens, so avoid a useless compare. */
 278         if (filter_level == NO_FILTERS)
 279                 return 0;
 280 #endif
 281         if (is_daemon_excluded(fname, is_dir))
 282                 return 1;
 283         if (filter_level != ALL_FILTERS)
 284                 return 0;
 285         if (filter_list.head
 286             && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
 287                 return 1;
 288         return 0;
 289 }
 290
 291 static void send_directory(int f, struct file_list *flist,
 292                            char *fbuf, int len, int flags);
 293
 294 static const char *pathname, *orig_dir;
 295 static int pathname_len;
 296
 297 /* Make sure flist can hold at least flist->used + extra entries. */
 298 static void flist_expand(struct file_list *flist, int extra)
 299 {
 300         struct file_struct **new_ptr;
 301
 302         if (flist->used + extra <= flist->malloced)
 303                 return;
 304
 305         if (flist->malloced < FLIST_START)
 306                 flist->malloced = FLIST_START;
 307         else if (flist->malloced >= FLIST_LINEAR)
 308                 flist->malloced += FLIST_LINEAR;
 309         else
 310                 flist->malloced *= 2;
 311
 312         /* In case count jumped or we are starting the list
 313          * with a known size just set it. */
 314         if (flist->malloced < flist->used + extra)
 315                 flist->malloced = flist->used + extra;
 316
 317         new_ptr = realloc_array(flist->files, struct file_struct *,
 318                                 flist->malloced);
 319
 320         if (DEBUG_GTE(FLIST, 1) && flist->malloced != FLIST_START) {
 321                 rprintf(FCLIENT, "[%s] expand file_list pointer array to %s bytes, did%s move\n",
 322                     who_am_i(),
 323                     big_num(sizeof flist->files[0] * flist->malloced, 0),
 324                     (new_ptr == flist->files) ? " not" : "");
 325         }
 326
 327         flist->files = new_ptr;
 328
 329         if (!flist->files)
 330                 out_of_memory("flist_expand");
 331 }
 332
 333 static void flist_done_allocating(struct file_list *flist)
 334 {
 335         void *ptr = pool_boundary(flist->file_pool, 8*1024);
 336         if (flist->pool_boundary == ptr)
 337                 flist->pool_boundary = NULL; /* list didn't use any pool memory */
 338         else
 339                 flist->pool_boundary = ptr;
 340 }
 341
 342 /* Call this with EITHER (1) "file, NULL, 0" to chdir() to the file's
 343  * F_PATHNAME(), or (2) "NULL, dir, dirlen" to chdir() to the supplied dir,
 344  * with dir == NULL taken to be the starting directory, and dirlen < 0
 345  * indicating that strdup(dir) should be called and then the -dirlen length
 346  * value checked to ensure that it is not daemon-excluded. */
 347 int change_pathname(struct file_struct *file, const char *dir, int dirlen)
 348 {
 349         if (dirlen < 0) {
 350                 char *cpy = strdup(dir);
 351                 if (*cpy != '/')
 352                         change_dir(orig_dir, CD_SKIP_CHDIR);
 353                 if (path_is_daemon_excluded(cpy, 0))
 354                         goto chdir_error;
 355                 dir = cpy;
 356                 dirlen = -dirlen;
 357         } else {
 358                 if (file) {
 359                         if (pathname == F_PATHNAME(file))
 360                                 return 1;
 361                         dir = F_PATHNAME(file);
 362                         if (dir)
 363                                 dirlen = strlen(dir);
 364                 } else if (pathname == dir)
 365                         return 1;
 366                 if (dir && *dir != '/')
 367                         change_dir(orig_dir, CD_SKIP_CHDIR);
 368         }
 369
 370         pathname = dir;
 371         pathname_len = dirlen;
 372
 373         if (!dir)
 374                 dir = orig_dir;
 375
 376         if (!change_dir(dir, CD_NORMAL)) {
 377           chdir_error:
 378                 io_error |= IOERR_GENERAL;
 379                 rsyserr(FERROR_XFER, errno, "change_dir %s failed", full_fname(dir));
 380                 if (dir != orig_dir)
 381                         change_dir(orig_dir, CD_NORMAL);
 382                 pathname = NULL;
 383                 pathname_len = 0;
 384                 return 0;
 385         }
 386
 387         return 1;
 388 }
 389
 390 static void send_file_entry(int f, const char *fname, struct file_struct *file,
 391 #ifdef SUPPORT_LINKS
 392                             const char *symlink_name, int symlink_len,
 393 #endif
 394                             int ndx, int first_ndx)
 395 {
 396         static time_t modtime;
 397         static mode_t mode;
 398 #ifdef SUPPORT_HARD_LINKS
 399         static int64 dev;
 400 #endif
 401         static dev_t rdev;
 402         static uint32 rdev_major;
 403         static uid_t uid;
 404         static gid_t gid;
 405         static const char *user_name, *group_name;
 406         static char lastname[MAXPATHLEN];
 407 #ifdef SUPPORT_HARD_LINKS
 408         int first_hlink_ndx = -1;
 409 #endif
 410         int l1, l2;
 411         int xflags;
 412
 413         /* Initialize starting value of xflags. */
 414         if (protocol_version >= 30 && S_ISDIR(file->mode)) {
 415                 dir_count++;
 416                 if (file->flags & FLAG_CONTENT_DIR)
 417                         xflags = file->flags & FLAG_TOP_DIR;
 418                 else if (file->flags & FLAG_IMPLIED_DIR)
 419                         xflags = XMIT_TOP_DIR | XMIT_NO_CONTENT_DIR;
 420                 else
 421                         xflags = XMIT_NO_CONTENT_DIR;
 422         } else
 423                 xflags = file->flags & FLAG_TOP_DIR; /* FLAG_TOP_DIR == XMIT_TOP_DIR */
 424
 425         if (file->mode == mode)
 426                 xflags |= XMIT_SAME_MODE;
 427         else
 428                 mode = file->mode;
 429
 430         if ((preserve_devices && IS_DEVICE(mode))
 431          || (preserve_specials && IS_SPECIAL(mode))) {
 432                 if (protocol_version < 28) {
 433                         if (tmp_rdev == rdev)
 434                                 xflags |= XMIT_SAME_RDEV_pre28;
 435                         else
 436                                 rdev = tmp_rdev;
 437                 } else {
 438                         rdev = tmp_rdev;
 439                         if ((uint32)major(rdev) == rdev_major)
 440                                 xflags |= XMIT_SAME_RDEV_MAJOR;
 441                         else
 442                                 rdev_major = major(rdev);
 443                         if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu)
 444                                 xflags |= XMIT_RDEV_MINOR_8_pre30;
 445                 }
 446         } else if (protocol_version < 28)
 447                 rdev = MAKEDEV(0, 0);
 448         if (!preserve_uid || ((uid_t)F_OWNER(file) == uid && *lastname))
 449                 xflags |= XMIT_SAME_UID;
 450         else {
 451                 uid = F_OWNER(file);
 452                 if (!numeric_ids) {
 453                         user_name = add_uid(uid);
 454                         if (inc_recurse && user_name)
 455                                 xflags |= XMIT_USER_NAME_FOLLOWS;
 456                 }
 457         }
 458         if (!preserve_gid || ((gid_t)F_GROUP(file) == gid && *lastname))
 459                 xflags |= XMIT_SAME_GID;
 460         else {
 461                 gid = F_GROUP(file);
 462                 if (!numeric_ids) {
 463                         group_name = add_gid(gid);
 464                         if (inc_recurse && group_name)
 465                                 xflags |= XMIT_GROUP_NAME_FOLLOWS;
 466                 }
 467         }
 468         if (file->modtime == modtime)
 469                 xflags |= XMIT_SAME_TIME;
 470         else
 471                 modtime = file->modtime;
 472
 473 #ifdef SUPPORT_HARD_LINKS
 474         if (tmp_dev != 0) {
 475                 if (protocol_version >= 30) {
 476                         struct ht_int64_node *np = idev_find(tmp_dev, tmp_ino);
 477                         first_hlink_ndx = (int32)(long)np->data - 1;
 478                         if (first_hlink_ndx < 0) {
 479                                 np->data = (void*)(long)(first_ndx + ndx + 1);
 480                                 xflags |= XMIT_HLINK_FIRST;
 481                         }
 482                         if (DEBUG_GTE(HLINK, 1)) {
 483                                 if (first_hlink_ndx >= 0) {
 484                                         rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
 485                                                 who_am_i(), first_ndx + ndx, first_hlink_ndx,
 486                                                 first_hlink_ndx >= first_ndx ? "" : "un");
 487                                 } else if (DEBUG_GTE(HLINK, 3)) {
 488                                         rprintf(FINFO, "[%s] dev:inode for #%d is %s:%s\n",
 489                                                 who_am_i(), first_ndx + ndx,
 490                                                 big_num(tmp_dev, 0), big_num(tmp_ino, 0));
 491                                 }
 492                         }
 493                 } else {
 494                         if (tmp_dev == dev) {
 495                                 if (protocol_version >= 28)
 496                                         xflags |= XMIT_SAME_DEV_pre30;
 497                         } else
 498                                 dev = tmp_dev;
 499                 }
 500                 xflags |= XMIT_HLINKED;
 501         }
 502 #endif
 503
 504         for (l1 = 0;
 505             lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
 506             l1++) {}
 507         l2 = strlen(fname+l1);
 508
 509         if (l1 > 0)
 510                 xflags |= XMIT_SAME_NAME;
 511         if (l2 > 255)
 512                 xflags |= XMIT_LONG_NAME;
 513
 514         /* We must make sure we don't send a zero flag byte or the
 515          * other end will terminate the flist transfer.  Note that
 516          * the use of XMIT_TOP_DIR on a non-dir has no meaning, so
 517          * it's harmless way to add a bit to the first flag byte. */
 518         if (protocol_version >= 28) {
 519                 if (!xflags && !S_ISDIR(mode))
 520                         xflags |= XMIT_TOP_DIR;
 521                 if ((xflags & 0xFF00) || !xflags) {
 522                         xflags |= XMIT_EXTENDED_FLAGS;
 523                         write_shortint(f, xflags);
 524                 } else
 525                         write_byte(f, xflags);
 526         } else {
 527                 if (!(xflags & 0xFF))
 528                         xflags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
 529                 write_byte(f, xflags);
 530         }
 531         if (xflags & XMIT_SAME_NAME)
 532                 write_byte(f, l1);
 533         if (xflags & XMIT_LONG_NAME)
 534                 write_varint30(f, l2);
 535         else
 536                 write_byte(f, l2);
 537         write_buf(f, fname + l1, l2);
 538
 539 #ifdef SUPPORT_HARD_LINKS
 540         if (first_hlink_ndx >= 0) {
 541                 write_varint(f, first_hlink_ndx);
 542                 if (first_hlink_ndx >= first_ndx)
 543                         goto the_end;
 544         }
 545 #endif
 546
 547         write_varlong30(f, F_LENGTH(file), 3);
 548         if (!(xflags & XMIT_SAME_TIME)) {
 549                 if (protocol_version >= 30)
 550                         write_varlong(f, modtime, 4);
 551                 else
 552                         write_int(f, modtime);
 553         }
 554         if (!(xflags & XMIT_SAME_MODE))
 555                 write_int(f, to_wire_mode(mode));
 556         if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
 557                 if (protocol_version < 30)
 558                         write_int(f, uid);
 559                 else {
 560                         write_varint(f, uid);
 561                         if (xflags & XMIT_USER_NAME_FOLLOWS) {
 562                                 int len = strlen(user_name);
 563                                 write_byte(f, len);
 564                                 write_buf(f, user_name, len);
 565                         }
 566                 }
 567         }
 568         if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
 569                 if (protocol_version < 30)
 570                         write_int(f, gid);
 571                 else {
 572                         write_varint(f, gid);
 573                         if (xflags & XMIT_GROUP_NAME_FOLLOWS) {
 574                                 int len = strlen(group_name);
 575                                 write_byte(f, len);
 576                                 write_buf(f, group_name, len);
 577                         }
 578                 }
 579         }
 580         if ((preserve_devices && IS_DEVICE(mode))
 581          || (preserve_specials && IS_SPECIAL(mode))) {
 582                 if (protocol_version < 28) {
 583                         if (!(xflags & XMIT_SAME_RDEV_pre28))
 584                                 write_int(f, (int)rdev);
 585                 } else {
 586                         if (!(xflags & XMIT_SAME_RDEV_MAJOR))
 587                                 write_varint30(f, major(rdev));
 588                         if (protocol_version >= 30)
 589                                 write_varint(f, minor(rdev));
 590                         else if (xflags & XMIT_RDEV_MINOR_8_pre30)
 591                                 write_byte(f, minor(rdev));
 592                         else
 593                                 write_int(f, minor(rdev));
 594                 }
 595         }
 596
 597 #ifdef SUPPORT_LINKS
 598         if (symlink_len) {
 599                 write_varint30(f, symlink_len);
 600                 write_buf(f, symlink_name, symlink_len);
 601         }
 602 #endif
 603
 604 #ifdef SUPPORT_HARD_LINKS
 605         if (tmp_dev != 0 && protocol_version < 30) {
 606                 if (protocol_version < 26) {
 607                         /* 32-bit dev_t and ino_t */
 608                         write_int(f, (int32)dev);
 609                         write_int(f, (int32)tmp_ino);
 610                 } else {
 611                         /* 64-bit dev_t and ino_t */
 612                         if (!(xflags & XMIT_SAME_DEV_pre30))
 613                                 write_longint(f, dev);
 614                         write_longint(f, tmp_ino);
 615                 }
 616         }
 617 #endif
 618
 619         if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
 620                 const char *sum;
 621                 if (S_ISREG(mode))
 622                         sum = tmp_sum;
 623                 else {
 624                         /* Prior to 28, we sent a useless set of nulls. */
 625                         sum = empty_sum;
 626                 }
 627                 write_buf(f, sum, checksum_len);
 628         }
 629
 630 #ifdef SUPPORT_HARD_LINKS
 631   the_end:
 632 #endif
 633         strlcpy(lastname, fname, MAXPATHLEN);
 634
 635         if (S_ISREG(mode) || S_ISLNK(mode))
 636                 stats.total_size += F_LENGTH(file);
 637 }
 638
 639 static struct file_struct *recv_file_entry(struct file_list *flist,
 640                                            int xflags, int f)
 641 {
 642         static int64 modtime;
 643         static mode_t mode;
 644 #ifdef SUPPORT_HARD_LINKS
 645         static int64 dev;
 646 #endif
 647         static dev_t rdev;
 648         static uint32 rdev_major;
 649         static uid_t uid;
 650         static gid_t gid;
 651         static uint16 gid_flags;
 652         static char lastname[MAXPATHLEN], *lastdir;
 653         static int lastdir_depth, lastdir_len = -1;
 654         static unsigned int del_hier_name_len = 0;
 655         static int in_del_hier = 0;
 656         char thisname[MAXPATHLEN];
 657         unsigned int l1 = 0, l2 = 0;
 658         int alloc_len, basename_len, linkname_len;
 659         int extra_len = file_extra_cnt * EXTRA_LEN;
 660         int first_hlink_ndx = -1;
 661         int64 file_length;
 662         const char *basename;
 663         struct file_struct *file;
 664         alloc_pool_t *pool;
 665         char *bp;
 666
 667         if (xflags & XMIT_SAME_NAME)
 668                 l1 = read_byte(f);
 669
 670         if (xflags & XMIT_LONG_NAME)
 671                 l2 = read_varint30(f);
 672         else
 673                 l2 = read_byte(f);
 674
 675         if (l2 >= MAXPATHLEN - l1) {
 676                 rprintf(FERROR,
 677                         "overflow: xflags=0x%x l1=%d l2=%d lastname=%s [%s]\n",
 678                         xflags, l1, l2, lastname, who_am_i());
 679                 overflow_exit("recv_file_entry");
 680         }
 681
 682         strlcpy(thisname, lastname, l1 + 1);
 683         read_sbuf(f, &thisname[l1], l2);
 684         thisname[l1 + l2] = 0;
 685
 686         /* Abuse basename_len for a moment... */
 687         basename_len = strlcpy(lastname, thisname, MAXPATHLEN);
 688
 689 #ifdef ICONV_OPTION
 690         if (ic_recv != (iconv_t)-1) {
 691                 xbuf outbuf, inbuf;
 692
 693                 INIT_CONST_XBUF(outbuf, thisname);
 694                 INIT_XBUF(inbuf, lastname, basename_len, (size_t)-1);
 695
 696                 if (iconvbufs(ic_recv, &inbuf, &outbuf, 0) < 0) {
 697                         io_error |= IOERR_GENERAL;
 698                         rprintf(FERROR_XFER,
 699                             "[%s] cannot convert filename: %s (%s)\n",
 700                             who_am_i(), lastname, strerror(errno));
 701                         outbuf.len = 0;
 702                 }
 703                 thisname[outbuf.len] = '\0';
 704         }
 705 #endif
 706
 707         if (*thisname)
 708                 clean_fname(thisname, 0);
 709
 710         if (sanitize_paths)
 711                 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
 712
 713         if ((basename = strrchr(thisname, '/')) != NULL) {
 714                 int len = basename++ - thisname;
 715                 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
 716                         lastdir = new_array(char, len + 1);
 717                         memcpy(lastdir, thisname, len);
 718                         lastdir[len] = '\0';
 719                         lastdir_len = len;
 720                         lastdir_depth = count_dir_elements(lastdir);
 721                 }
 722         } else
 723                 basename = thisname;
 724         basename_len = strlen(basename) + 1; /* count the '\0' */
 725
 726 #ifdef SUPPORT_HARD_LINKS
 727         if (protocol_version >= 30
 728          && BITS_SETnUNSET(xflags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
 729                 first_hlink_ndx = read_varint(f);
 730                 if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->ndx_start + flist->used) {
 731                         rprintf(FERROR,
 732                                 "hard-link reference out of range: %d (%d)\n",
 733                                 first_hlink_ndx, flist->ndx_start + flist->used);
 734                         exit_cleanup(RERR_PROTOCOL);
 735                 }
 736                 if (DEBUG_GTE(HLINK, 1)) {
 737                         rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
 738                                 who_am_i(), flist->used+flist->ndx_start, first_hlink_ndx,
 739                                 first_hlink_ndx >= flist->ndx_start ? "" : "un");
 740                 }
 741                 if (first_hlink_ndx >= flist->ndx_start) {
 742                         struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
 743                         file_length = F_LENGTH(first);
 744                         modtime = first->modtime;
 745                         mode = first->mode;
 746                         if (preserve_uid)
 747                                 uid = F_OWNER(first);
 748                         if (preserve_gid)
 749                                 gid = F_GROUP(first);
 750                         if ((preserve_devices && IS_DEVICE(mode))
 751                          || (preserve_specials && IS_SPECIAL(mode))) {
 752                                 uint32 *devp = F_RDEV_P(first);
 753                                 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
 754                                 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
 755                         }
 756                         if (preserve_links && S_ISLNK(mode))
 757                                 linkname_len = strlen(F_SYMLINK(first)) + 1;
 758                         else
 759                                 linkname_len = 0;
 760                         goto create_object;
 761                 }
 762         }
 763 #endif
 764
 765         file_length = read_varlong30(f, 3);
 766         if (!(xflags & XMIT_SAME_TIME)) {
 767                 if (protocol_version >= 30) {
 768                         modtime = read_varlong(f, 4);
 769 #if SIZEOF_TIME_T < SIZEOF_INT64
 770                         if (!am_generator && (int64)(time_t)modtime != modtime) {
 771                                 rprintf(FERROR_XFER,
 772                                     "Time value of %s truncated on receiver.\n",
 773                                     lastname);
 774                         }
 775 #endif
 776                 } else
 777                         modtime = read_int(f);
 778         }
 779         if (!(xflags & XMIT_SAME_MODE))
 780                 mode = from_wire_mode(read_int(f));
 781
 782         if (chmod_modes && !S_ISLNK(mode))
 783                 mode = tweak_mode(mode, chmod_modes);
 784
 785         if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
 786                 if (protocol_version < 30)
 787                         uid = (uid_t)read_int(f);
 788                 else {
 789                         uid = (uid_t)read_varint(f);
 790                         if (xflags & XMIT_USER_NAME_FOLLOWS)
 791                                 uid = recv_user_name(f, uid);
 792                         else if (inc_recurse && am_root && !numeric_ids)
 793                                 uid = match_uid(uid);
 794                 }
 795         }
 796         if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
 797                 if (protocol_version < 30)
 798                         gid = (gid_t)read_int(f);
 799                 else {
 800                         gid = (gid_t)read_varint(f);
 801                         gid_flags = 0;
 802                         if (xflags & XMIT_GROUP_NAME_FOLLOWS)
 803                                 gid = recv_group_name(f, gid, &gid_flags);
 804                         else if (inc_recurse && (!am_root || !numeric_ids))
 805                                 gid = match_gid(gid, &gid_flags);
 806                 }
 807         }
 808
 809         if ((preserve_devices && IS_DEVICE(mode))
 810          || (preserve_specials && IS_SPECIAL(mode))) {
 811                 if (protocol_version < 28) {
 812                         if (!(xflags & XMIT_SAME_RDEV_pre28))
 813                                 rdev = (dev_t)read_int(f);
 814                 } else {
 815                         uint32 rdev_minor;
 816                         if (!(xflags & XMIT_SAME_RDEV_MAJOR))
 817                                 rdev_major = read_varint30(f);
 818                         if (protocol_version >= 30)
 819                                 rdev_minor = read_varint(f);
 820                         else if (xflags & XMIT_RDEV_MINOR_8_pre30)
 821                                 rdev_minor = read_byte(f);
 822                         else
 823                                 rdev_minor = read_int(f);
 824                         rdev = MAKEDEV(rdev_major, rdev_minor);
 825                 }
 826                 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
 827                 file_length = 0;
 828         } else if (protocol_version < 28)
 829                 rdev = MAKEDEV(0, 0);
 830
 831 #ifdef SUPPORT_LINKS
 832         if (preserve_links && S_ISLNK(mode)) {
 833                 linkname_len = read_varint30(f) + 1; /* count the '\0' */
 834                 if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
 835                         rprintf(FERROR, "overflow: linkname_len=%d\n",
 836                                 linkname_len - 1);
 837                         overflow_exit("recv_file_entry");
 838                 }
 839 #ifdef ICONV_OPTION
 840                 /* We don't know how much extra room we need to convert
 841                  * the as-yet-unread symlink name when converting it,
 842                  * so let's hope that a double-size buffer is plenty. */
 843                 if (ic_recv != (iconv_t)-1)
 844                         linkname_len = linkname_len * 2 + 1;
 845 #endif
 846                 if (munge_symlinks)
 847                         linkname_len += SYMLINK_PREFIX_LEN;
 848         }
 849         else
 850 #endif
 851                 linkname_len = 0;
 852
 853 #ifdef SUPPORT_HARD_LINKS
 854   create_object:
 855         if (preserve_hard_links) {
 856                 if (protocol_version < 28 && S_ISREG(mode))
 857                         xflags |= XMIT_HLINKED;
 858                 if (xflags & XMIT_HLINKED)
 859                         extra_len += (inc_recurse+1) * EXTRA_LEN;
 860         }
 861 #endif
 862
 863 #ifdef SUPPORT_ACLS
 864         /* Directories need an extra int32 for the default ACL. */
 865         if (preserve_acls && S_ISDIR(mode))
 866                 extra_len += EXTRA_LEN;
 867 #endif
 868
 869         if (always_checksum && S_ISREG(mode))
 870                 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
 871
 872 #if SIZEOF_INT64 >= 8
 873         if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
 874                 extra_len += EXTRA_LEN;
 875 #endif
 876         if (file_length < 0) {
 877                 rprintf(FERROR, "Offset underflow: file-length is negative\n");
 878                 exit_cleanup(RERR_UNSUPPORTED);
 879         }
 880
 881         if (inc_recurse && S_ISDIR(mode)) {
 882                 if (one_file_system) {
 883                         /* Room to save the dir's device for -x */
 884                         extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
 885                 }
 886                 pool = dir_flist->file_pool;
 887         } else
 888                 pool = flist->file_pool;
 889
 890 #if EXTRA_ROUNDING > 0
 891         if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
 892                 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
 893 #endif
 894
 895         alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
 896                   + linkname_len;
 897         bp = pool_alloc(pool, alloc_len, "recv_file_entry");
 898
 899         memset(bp, 0, extra_len + FILE_STRUCT_LEN);
 900         bp += extra_len;
 901         file = (struct file_struct *)bp;
 902         bp += FILE_STRUCT_LEN;
 903
 904         memcpy(bp, basename, basename_len);
 905
 906 #ifdef SUPPORT_HARD_LINKS
 907         if (xflags & XMIT_HLINKED)
 908                 file->flags |= FLAG_HLINKED;
 909 #endif
 910         file->modtime = (time_t)modtime;
 911         file->len32 = (uint32)file_length;
 912 #if SIZEOF_INT64 >= 8
 913         if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
 914 #if SIZEOF_CAPITAL_OFF_T < 8
 915                 rprintf(FERROR, "Offset overflow: attempted 64-bit file-length\n");
 916                 exit_cleanup(RERR_UNSUPPORTED);
 917 #else
 918                 file->flags |= FLAG_LENGTH64;
 919                 OPT_EXTRA(file, 0)->unum = (uint32)(file_length >> 32);
 920 #endif
 921         }
 922 #endif
 923         file->mode = mode;
 924         if (preserve_uid)
 925                 F_OWNER(file) = uid;
 926         if (preserve_gid) {
 927                 F_GROUP(file) = gid;
 928                 file->flags |= gid_flags;
 929         }
 930         if (unsort_ndx)
 931                 F_NDX(file) = flist->used + flist->ndx_start;
 932
 933         if (basename != thisname) {
 934                 file->dirname = lastdir;
 935                 F_DEPTH(file) = lastdir_depth + 1;
 936         } else
 937                 F_DEPTH(file) = 1;
 938
 939         if (S_ISDIR(mode)) {
 940                 if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
 941                         F_DEPTH(file)--;
 942                 if (protocol_version >= 30) {
 943                         if (!(xflags & XMIT_NO_CONTENT_DIR)) {
 944                                 if (xflags & XMIT_TOP_DIR)
 945                                         file->flags |= FLAG_TOP_DIR;
 946                                 file->flags |= FLAG_CONTENT_DIR;
 947                         } else if (xflags & XMIT_TOP_DIR)
 948                                 file->flags |= FLAG_IMPLIED_DIR;
 949                 } else if (xflags & XMIT_TOP_DIR) {
 950                         in_del_hier = recurse;
 951                         del_hier_name_len = F_DEPTH(file) == 0 ? 0 : l1 + l2;
 952                         if (relative_paths && del_hier_name_len > 2
 953                             && lastname[del_hier_name_len-1] == '.'
 954                             && lastname[del_hier_name_len-2] == '/')
 955                                 del_hier_name_len -= 2;
 956                         file->flags |= FLAG_TOP_DIR | FLAG_CONTENT_DIR;
 957                 } else if (in_del_hier) {
 958                         if (!relative_paths || !del_hier_name_len
 959                          || (l1 >= del_hier_name_len
 960                           && lastname[del_hier_name_len] == '/'))
 961                                 file->flags |= FLAG_CONTENT_DIR;
 962                         else
 963                                 in_del_hier = 0;
 964                 }
 965         }
 966
 967         if ((preserve_devices && IS_DEVICE(mode))
 968          || (preserve_specials && IS_SPECIAL(mode))) {
 969                 uint32 *devp = F_RDEV_P(file);
 970                 DEV_MAJOR(devp) = major(rdev);
 971                 DEV_MINOR(devp) = minor(rdev);
 972         }
 973
 974 #ifdef SUPPORT_LINKS
 975         if (linkname_len) {
 976                 bp += basename_len;
 977                 if (first_hlink_ndx >= flist->ndx_start) {
 978                         struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
 979                         memcpy(bp, F_SYMLINK(first), linkname_len);
 980                 } else {
 981                         if (munge_symlinks) {
 982                                 strlcpy(bp, SYMLINK_PREFIX, linkname_len);
 983                                 bp += SYMLINK_PREFIX_LEN;
 984                                 linkname_len -= SYMLINK_PREFIX_LEN;
 985                         }
 986 #ifdef ICONV_OPTION
 987                         if (ic_recv != (iconv_t)-1) {
 988                                 xbuf outbuf, inbuf;
 989
 990                                 alloc_len = linkname_len;
 991                                 linkname_len /= 2; /* (linkname_len-1) / 2 for odd values. */
 992
 993                                 /* Read the symlink name into the end of our double-sized
 994                                  * buffer and then convert it into the right spot. */
 995                                 INIT_XBUF(inbuf, bp + alloc_len - linkname_len,
 996                                           linkname_len - 1, (size_t)-1);
 997                                 read_sbuf(f, inbuf.buf, inbuf.len);
 998                                 INIT_XBUF(outbuf, bp, 0, alloc_len);
 999
1000                                 if (iconvbufs(ic_recv, &inbuf, &outbuf, 0) < 0) {
1001                                         io_error |= IOERR_GENERAL;
1002                                         rprintf(FERROR_XFER,
1003                                             "[%s] cannot convert symlink name for: %s (%s)\n",
1004                                             who_am_i(), full_fname(thisname), strerror(errno));
1005                                         bp = (char*)file->basename;
1006                                         *bp++ = '\0';
1007                                         outbuf.len = 0;
1008                                 }
1009                                 bp[outbuf.len] = '\0';
1010                         } else
1011 #endif
1012                                 read_sbuf(f, bp, linkname_len - 1);
1013                         if (sanitize_paths && !munge_symlinks && *bp)
1014                                 sanitize_path(bp, bp, "", lastdir_depth, SP_DEFAULT);
1015                 }
1016         }
1017 #endif
1018
1019 #ifdef SUPPORT_HARD_LINKS
1020         if (preserve_hard_links && xflags & XMIT_HLINKED) {
1021                 if (protocol_version >= 30) {
1022                         if (xflags & XMIT_HLINK_FIRST) {
1023                                 F_HL_GNUM(file) = flist->ndx_start + flist->used;
1024                         } else
1025                                 F_HL_GNUM(file) = first_hlink_ndx;
1026                 } else {
1027                         static int32 cnt = 0;
1028                         struct ht_int64_node *np;
1029                         int64 ino;
1030                         int32 ndx;
1031                         if (protocol_version < 26) {
1032                                 dev = read_int(f);
1033                                 ino = read_int(f);
1034                         } else {
1035                                 if (!(xflags & XMIT_SAME_DEV_pre30))
1036                                         dev = read_longint(f);
1037                                 ino = read_longint(f);
1038                         }
1039                         np = idev_find(dev, ino);
1040                         ndx = (int32)(long)np->data - 1;
1041                         if (ndx < 0) {
1042                                 ndx = cnt++;
1043                                 np->data = (void*)(long)cnt;
1044                         }
1045                         F_HL_GNUM(file) = ndx;
1046                 }
1047         }
1048 #endif
1049
1050         if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
1051                 if (S_ISREG(mode))
1052                         bp = F_SUM(file);
1053                 else {
1054                         /* Prior to 28, we get a useless set of nulls. */
1055                         bp = tmp_sum;
1056                 }
1057                 if (first_hlink_ndx >= flist->ndx_start) {
1058                         struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1059                         memcpy(bp, F_SUM(first), checksum_len);
1060                 } else
1061                         read_buf(f, bp, checksum_len);
1062         }
1063
1064 #ifdef SUPPORT_ACLS
1065         if (preserve_acls && !S_ISLNK(mode))
1066                 receive_acl(file, f);
1067 #endif
1068 #ifdef SUPPORT_XATTRS
1069         if (preserve_xattrs)
1070                 receive_xattr(file, f );
1071 #endif
1072
1073         if (S_ISREG(mode) || S_ISLNK(mode))
1074                 stats.total_size += file_length;
1075
1076         return file;
1077 }
1078
1079 /* Create a file_struct for a named file by reading its stat() information
1080  * and performing extensive checks against global options.
1081  *
1082  * Returns a pointer to the new file struct, or NULL if there was an error
1083  * or this file should be excluded.
1084  *
1085  * Note: Any error (here or in send_file_name) that results in the omission of
1086  * an existent source file from the file list should set
1087  * "io_error |= IOERR_GENERAL" to avoid deletion of the file from the
1088  * destination if --delete is on. */
1089 struct file_struct *make_file(const char *fname, struct file_list *flist,
1090                               STRUCT_STAT *stp, int flags, int filter_level)
1091 {
1092         static char *lastdir;
1093         static int lastdir_len = -1;
1094         struct file_struct *file;
1095         char thisname[MAXPATHLEN];
1096         char linkname[MAXPATHLEN];
1097         int alloc_len, basename_len, linkname_len;
1098         int extra_len = file_extra_cnt * EXTRA_LEN;
1099         const char *basename;
1100         alloc_pool_t *pool;
1101         STRUCT_STAT st;
1102         char *bp;
1103
1104         if (strlcpy(thisname, fname, sizeof thisname) >= sizeof thisname) {
1105                 io_error |= IOERR_GENERAL;
1106                 rprintf(FERROR_XFER, "skipping overly long name: %s\n", fname);
1107                 return NULL;
1108         }
1109         clean_fname(thisname, 0);
1110         if (sanitize_paths)
1111                 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
1112
1113         if (stp && S_ISDIR(stp->st_mode)) {
1114                 st = *stp; /* Needed for "symlink/." with --relative. */
1115                 *linkname = '\0'; /* make IBM code checker happy */
1116         } else if (readlink_stat(thisname, &st, linkname) != 0) {
1117                 int save_errno = errno;
1118                 /* See if file is excluded before reporting an error. */
1119                 if (filter_level != NO_FILTERS
1120                  && (is_excluded(thisname, 0, filter_level)
1121                   || is_excluded(thisname, 1, filter_level))) {
1122                         if (ignore_perishable && save_errno != ENOENT)
1123                                 non_perishable_cnt++;
1124                         return NULL;
1125                 }
1126                 if (save_errno == ENOENT) {
1127 #ifdef SUPPORT_LINKS
1128                         /* When our options tell us to follow a symlink that
1129                          * points nowhere, tell the user about the symlink
1130                          * instead of giving a "vanished" message.  We only
1131                          * dereference a symlink if one of the --copy*links
1132                          * options was specified, so there's no need for the
1133                          * extra lstat() if one of these options isn't on. */
1134                         if ((copy_links || copy_unsafe_links || copy_dirlinks)
1135                          && x_lstat(thisname, &st, NULL) == 0
1136                          && S_ISLNK(st.st_mode)) {
1137                                 io_error |= IOERR_GENERAL;
1138                                 rprintf(FERROR_XFER, "symlink has no referent: %s\n",
1139                                         full_fname(thisname));
1140                         } else
1141 #endif
1142                         {
1143                                 enum logcode c = am_daemon && protocol_version < 28
1144                                                ? FERROR : FWARNING;
1145                                 io_error |= IOERR_VANISHED;
1146                                 rprintf(c, "file has vanished: %s\n",
1147                                         full_fname(thisname));
1148                         }
1149                 } else {
1150                         io_error |= IOERR_GENERAL;
1151                         rsyserr(FERROR_XFER, save_errno, "readlink %s failed",
1152                                 full_fname(thisname));
1153                 }
1154                 return NULL;
1155         }
1156
1157         if (filter_level == NO_FILTERS)
1158                 goto skip_filters;
1159
1160         if (S_ISDIR(st.st_mode)) {
1161                 if (!xfer_dirs) {
1162                         rprintf(FINFO, "skipping directory %s\n", thisname);
1163                         return NULL;
1164                 }
1165                 /* -x only affects dirs because we need to avoid recursing
1166                  * into a mount-point directory, not to avoid copying a
1167                  * symlinked file if -L (or similar) was specified. */
1168                 if (one_file_system && st.st_dev != filesystem_dev
1169                  && BITS_SETnUNSET(flags, FLAG_CONTENT_DIR, FLAG_TOP_DIR)) {
1170                         if (one_file_system > 1) {
1171                                 if (INFO_GTE(MOUNT, 1)) {
1172                                         rprintf(FINFO,
1173                                             "[%s] skipping mount-point dir %s\n",
1174                                             who_am_i(), thisname);
1175                                 }
1176                                 return NULL;
1177                         }
1178                         flags |= FLAG_MOUNT_DIR;
1179                         flags &= ~FLAG_CONTENT_DIR;
1180                 }
1181         } else
1182                 flags &= ~FLAG_CONTENT_DIR;
1183
1184         if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
1185                 if (ignore_perishable)
1186                         non_perishable_cnt++;
1187                 return NULL;
1188         }
1189
1190         if (lp_ignore_nonreadable(module_id)) {
1191 #ifdef SUPPORT_LINKS
1192                 if (!S_ISLNK(st.st_mode))
1193 #endif
1194                         if (access(thisname, R_OK) != 0)
1195                                 return NULL;
1196         }
1197
1198   skip_filters:
1199
1200         /* Only divert a directory in the main transfer. */
1201         if (flist) {
1202                 if (flist->prev && S_ISDIR(st.st_mode)
1203                  && flags & FLAG_DIVERT_DIRS) {
1204                         /* Room for parent/sibling/next-child info. */
1205                         extra_len += DIRNODE_EXTRA_CNT * EXTRA_LEN;
1206                         if (relative_paths)
1207                                 extra_len += PTR_EXTRA_CNT * EXTRA_LEN;
1208                         pool = dir_flist->file_pool;
1209                 } else
1210                         pool = flist->file_pool;
1211         } else {
1212 #ifdef SUPPORT_ACLS
1213                 /* Directories need an extra int32 for the default ACL. */
1214                 if (preserve_acls && S_ISDIR(st.st_mode))
1215                         extra_len += EXTRA_LEN;
1216 #endif
1217                 pool = NULL;
1218         }
1219
1220         if (DEBUG_GTE(FLIST, 2)) {
1221                 rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
1222                         who_am_i(), thisname, filter_level);
1223         }
1224
1225         if ((basename = strrchr(thisname, '/')) != NULL) {
1226                 int len = basename++ - thisname;
1227                 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
1228                         lastdir = new_array(char, len + 1);
1229                         memcpy(lastdir, thisname, len);
1230                         lastdir[len] = '\0';
1231                         lastdir_len = len;
1232                 }
1233         } else
1234                 basename = thisname;
1235         basename_len = strlen(basename) + 1; /* count the '\0' */
1236
1237 #ifdef SUPPORT_LINKS
1238         linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
1239 #else
1240         linkname_len = 0;
1241 #endif
1242
1243 #if SIZEOF_CAPITAL_OFF_T >= 8
1244         if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
1245                 extra_len += EXTRA_LEN;
1246 #endif
1247
1248         if (always_checksum && am_sender && S_ISREG(st.st_mode)) {
1249                 file_checksum(thisname, tmp_sum, st.st_size);
1250                 if (sender_keeps_checksum)
1251                         extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
1252         }
1253
1254 #if EXTRA_ROUNDING > 0
1255         if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
1256                 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
1257 #endif
1258
1259         alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
1260                   + linkname_len;
1261         if (pool)
1262                 bp = pool_alloc(pool, alloc_len, "make_file");
1263         else {
1264                 if (!(bp = new_array(char, alloc_len)))
1265                         out_of_memory("make_file");
1266         }
1267
1268         memset(bp, 0, extra_len + FILE_STRUCT_LEN);
1269         bp += extra_len;
1270         file = (struct file_struct *)bp;
1271         bp += FILE_STRUCT_LEN;
1272
1273         memcpy(bp, basename, basename_len);
1274
1275 #ifdef SUPPORT_HARD_LINKS
1276         if (preserve_hard_links && flist && flist->prev) {
1277                 if (protocol_version >= 28
1278                  ? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
1279                  : S_ISREG(st.st_mode)) {
1280                         tmp_dev = (int64)st.st_dev + 1;
1281                         tmp_ino = (int64)st.st_ino;
1282                 } else
1283                         tmp_dev = 0;
1284         }
1285 #endif
1286
1287 #ifdef HAVE_STRUCT_STAT_ST_RDEV
1288         if (IS_DEVICE(st.st_mode) || IS_SPECIAL(st.st_mode)) {
1289                 tmp_rdev = st.st_rdev;
1290                 st.st_size = 0;
1291         }
1292 #endif
1293
1294         file->flags = flags;
1295         file->modtime = st.st_mtime;
1296         file->len32 = (uint32)st.st_size;
1297 #if SIZEOF_CAPITAL_OFF_T >= 8
1298         if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
1299                 file->flags |= FLAG_LENGTH64;
1300                 OPT_EXTRA(file, 0)->unum = (uint32)(st.st_size >> 32);
1301         }
1302 #endif
1303         file->mode = st.st_mode;
1304         if (uid_ndx) /* Check uid_ndx instead of preserve_uid for del support */
1305                 F_OWNER(file) = st.st_uid;
1306         if (gid_ndx) /* Check gid_ndx instead of preserve_gid for del support */
1307                 F_GROUP(file) = st.st_gid;
1308
1309         if (basename != thisname)
1310                 file->dirname = lastdir;
1311
1312 #ifdef SUPPORT_LINKS
1313         if (linkname_len)
1314                 memcpy(bp + basename_len, linkname, linkname_len);
1315 #endif
1316
1317         if (am_sender)
1318                 F_PATHNAME(file) = pathname;
1319         else if (!pool)
1320                 F_DEPTH(file) = extra_len / EXTRA_LEN;
1321
1322         /* This code is only used by the receiver when it is building
1323          * a list of files for a delete pass. */
1324         if (keep_dirlinks && linkname_len && flist) {
1325                 STRUCT_STAT st2;
1326                 int save_mode = file->mode;
1327                 file->mode = S_IFDIR; /* Find a directory with our name. */
1328                 if (flist_find(dir_flist, file) >= 0
1329                  && x_stat(thisname, &st2, NULL) == 0 && S_ISDIR(st2.st_mode)) {
1330                         file->modtime = st2.st_mtime;
1331                         file->len32 = 0;
1332                         file->mode = st2.st_mode;
1333                         if (uid_ndx)
1334                                 F_OWNER(file) = st2.st_uid;
1335                         if (gid_ndx)
1336                                 F_GROUP(file) = st2.st_gid;
1337                 } else
1338                         file->mode = save_mode;
1339         }
1340
1341         if (basename_len == 0+1) {
1342                 if (!pool)
1343                         unmake_file(file);
1344                 return NULL;
1345         }
1346
1347         if (sender_keeps_checksum && S_ISREG(st.st_mode))
1348                 memcpy(F_SUM(file), tmp_sum, checksum_len);
1349
1350         if (unsort_ndx)
1351                 F_NDX(file) = dir_count;
1352
1353         return file;
1354 }
1355
1356 /* Only called for temporary file_struct entries created by make_file(). */
1357 void unmake_file(struct file_struct *file)
1358 {
1359         free(REQ_EXTRA(file, F_DEPTH(file)));
1360 }
1361
1362 static struct file_struct *send_file_name(int f, struct file_list *flist,
1363                                           const char *fname, STRUCT_STAT *stp,
1364                                           int flags, int filter_level)
1365 {
1366         struct file_struct *file;
1367
1368         file = make_file(fname, flist, stp, flags, filter_level);
1369         if (!file)
1370                 return NULL;
1371
1372         if (chmod_modes && !S_ISLNK(file->mode))
1373                 file->mode = tweak_mode(file->mode, chmod_modes);
1374
1375         if (f >= 0) {
1376                 char fbuf[MAXPATHLEN];
1377 #ifdef SUPPORT_LINKS
1378                 const char *symlink_name;
1379                 int symlink_len;
1380 #ifdef ICONV_OPTION
1381                 char symlink_buf[MAXPATHLEN];
1382 #endif
1383 #endif
1384 #if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
1385                 stat_x sx;
1386 #endif
1387
1388 #ifdef SUPPORT_LINKS
1389                 if (preserve_links && S_ISLNK(file->mode)) {
1390                         symlink_name = F_SYMLINK(file);
1391                         symlink_len = strlen(symlink_name);
1392                 } else {
1393                         symlink_name = NULL;
1394                         symlink_len = 0;
1395                 }
1396 #endif
1397
1398 #ifdef ICONV_OPTION
1399                 if (ic_send != (iconv_t)-1) {
1400                         xbuf outbuf, inbuf;
1401
1402                         INIT_CONST_XBUF(outbuf, fbuf);
1403
1404                         if (file->dirname) {
1405                                 INIT_XBUF_STRLEN(inbuf, (char*)file->dirname);
1406                                 outbuf.size -= 2; /* Reserve room for '/' & 1 more char. */
1407                                 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0)
1408                                         goto convert_error;
1409                                 outbuf.size += 2;
1410                                 fbuf[outbuf.len++] = '/';
1411                         }
1412
1413                         INIT_XBUF_STRLEN(inbuf, (char*)file->basename);
1414                         if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0) {
1415                           convert_error:
1416                                 io_error |= IOERR_GENERAL;
1417                                 rprintf(FERROR_XFER,
1418                                     "[%s] cannot convert filename: %s (%s)\n",
1419                                     who_am_i(), f_name(file, fbuf), strerror(errno));
1420                                 return NULL;
1421                         }
1422                         fbuf[outbuf.len] = '\0';
1423
1424 #ifdef SUPPORT_LINKS
1425                         if (symlink_len) {
1426                                 INIT_XBUF(inbuf, (char*)symlink_name, symlink_len, (size_t)-1);
1427                                 INIT_CONST_XBUF(outbuf, symlink_buf);
1428                                 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0) {
1429                                         io_error |= IOERR_GENERAL;
1430                                         f_name(file, fbuf);
1431                                         rprintf(FERROR_XFER,
1432                                             "[%s] cannot convert symlink name for: %s (%s)\n",
1433                                             who_am_i(), full_fname(fbuf), strerror(errno));
1434                                         return NULL;
1435                                 }
1436                                 symlink_buf[outbuf.len] = '\0';
1437
1438                                 symlink_name = symlink_buf;
1439                                 symlink_len = outbuf.len;
1440                         }
1441 #endif
1442                 } else
1443 #endif
1444                         f_name(file, fbuf);
1445
1446 #ifdef SUPPORT_ACLS
1447                 if (preserve_acls && !S_ISLNK(file->mode)) {
1448                         sx.st.st_mode = file->mode;
1449                         sx.acc_acl = sx.def_acl = NULL;
1450                         if (get_acl(fname, &sx) < 0) {
1451                                 io_error |= IOERR_GENERAL;
1452                                 return NULL;
1453                         }
1454                 }
1455 #endif
1456 #ifdef SUPPORT_XATTRS
1457                 if (preserve_xattrs) {
1458                         sx.xattr = NULL;
1459                         if (get_xattr(fname, &sx) < 0) {
1460                                 io_error |= IOERR_GENERAL;
1461                                 return NULL;
1462                         }
1463                 }
1464 #endif
1465
1466                 send_file_entry(f, fbuf, file,
1467 #ifdef SUPPORT_LINKS
1468                                 symlink_name, symlink_len,
1469 #endif
1470                                 flist->used, flist->ndx_start);
1471
1472 #ifdef SUPPORT_ACLS
1473                 if (preserve_acls && !S_ISLNK(file->mode)) {
1474                         send_acl(&sx, f);
1475                         free_acl(&sx);
1476                 }
1477 #endif
1478 #ifdef SUPPORT_XATTRS
1479                 if (preserve_xattrs) {
1480                         F_XATTR(file) = send_xattr(&sx, f);
1481                         free_xattr(&sx);
1482                 }
1483 #endif
1484         }
1485
1486         maybe_emit_filelist_progress(flist->used + flist_count_offset);
1487
1488         flist_expand(flist, 1);
1489         flist->files[flist->used++] = file;
1490
1491         return file;
1492 }
1493
1494 static void send_if_directory(int f, struct file_list *flist,
1495                               struct file_struct *file,
1496                               char *fbuf, unsigned int ol,
1497                               int flags)
1498 {
1499         char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
1500
1501         if (S_ISDIR(file->mode)
1502             && !(file->flags & FLAG_MOUNT_DIR) && f_name(file, fbuf)) {
1503                 void *save_filters;
1504                 unsigned int len = strlen(fbuf);
1505                 if (len > 1 && fbuf[len-1] == '/')
1506                         fbuf[--len] = '\0';
1507                 if (len >= MAXPATHLEN - 1) {
1508                         io_error |= IOERR_GENERAL;
1509                         rprintf(FERROR_XFER, "skipping long-named directory: %s\n",
1510                                 full_fname(fbuf));
1511                         return;
1512                 }
1513                 save_filters = push_local_filters(fbuf, len);
1514                 send_directory(f, flist, fbuf, len, flags);
1515                 pop_local_filters(save_filters);
1516                 fbuf[ol] = '\0';
1517                 if (is_dot_dir)
1518                         fbuf[ol-1] = '.';
1519         }
1520 }
1521
1522 static int file_compare(const void *file1, const void *file2)
1523 {
1524         return f_name_cmp(*(struct file_struct **)file1,
1525                           *(struct file_struct **)file2);
1526 }
1527
1528 /* The guts of a merge-sort algorithm.  This was derived from the glibc
1529  * version, but I (Wayne) changed the merge code to do less copying and
1530  * to require only half the amount of temporary memory. */
1531 static void fsort_tmp(struct file_struct **fp, size_t num,
1532                       struct file_struct **tmp)
1533 {
1534         struct file_struct **f1, **f2, **t;
1535         size_t n1, n2;
1536
1537         n1 = num / 2;
1538         n2 = num - n1;
1539         f1 = fp;
1540         f2 = fp + n1;
1541
1542         if (n1 > 1)
1543                 fsort_tmp(f1, n1, tmp);
1544         if (n2 > 1)
1545                 fsort_tmp(f2, n2, tmp);
1546
1547         while (f_name_cmp(*f1, *f2) <= 0) {
1548                 if (!--n1)
1549                         return;
1550                 f1++;
1551         }
1552
1553         t = tmp;
1554         memcpy(t, f1, n1 * PTR_SIZE);
1555
1556         *f1++ = *f2++, n2--;
1557
1558         while (n1 > 0 && n2 > 0) {
1559                 if (f_name_cmp(*t, *f2) <= 0)
1560                         *f1++ = *t++, n1--;
1561                 else
1562                         *f1++ = *f2++, n2--;
1563         }
1564
1565         if (n1 > 0)
1566                 memcpy(f1, t, n1 * PTR_SIZE);
1567 }
1568
1569 /* This file-struct sorting routine makes sure that any identical names in
1570  * the file list stay in the same order as they were in the original list.
1571  * This is particularly vital in inc_recurse mode where we expect a sort
1572  * on the flist to match the exact order of a sort on the dir_flist. */
1573 static void fsort(struct file_struct **fp, size_t num)
1574 {
1575         if (num <= 1)
1576                 return;
1577
1578         if (use_qsort)
1579                 qsort(fp, num, PTR_SIZE, file_compare);
1580         else {
1581                 struct file_struct **tmp = new_array(struct file_struct *,
1582                                                      (num+1) / 2);
1583                 fsort_tmp(fp, num, tmp);
1584                 free(tmp);
1585         }
1586 }
1587
1588 /* We take an entire set of sibling dirs from the sorted flist and link them
1589  * into the tree, setting the appropriate parent/child/sibling pointers. */
1590 static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist,
1591                              int dir_cnt)
1592 {
1593         int i;
1594         int32 *dp = NULL;
1595         int32 *parent_dp = parent_ndx < 0 ? NULL
1596                          : F_DIR_NODE_P(dir_flist->sorted[parent_ndx]);
1597
1598         flist_expand(dir_flist, dir_cnt);
1599         dir_flist->sorted = dir_flist->files;
1600
1601         for (i = 0; dir_cnt; i++) {
1602                 struct file_struct *file = from_flist->sorted[i];
1603
1604                 if (!S_ISDIR(file->mode))
1605                         continue;
1606
1607                 dir_flist->files[dir_flist->used++] = file;
1608                 dir_cnt--;
1609
1610                 if (file->basename[0] == '.' && file->basename[1] == '\0')
1611                         continue;
1612
1613                 if (dp)
1614                         DIR_NEXT_SIBLING(dp) = dir_flist->used - 1;
1615                 else if (parent_dp)
1616                         DIR_FIRST_CHILD(parent_dp) = dir_flist->used - 1;
1617                 else
1618                         send_dir_ndx = dir_flist->used - 1;
1619
1620                 dp = F_DIR_NODE_P(file);
1621                 DIR_PARENT(dp) = parent_ndx;
1622                 DIR_FIRST_CHILD(dp) = -1;
1623         }
1624         if (dp)
1625                 DIR_NEXT_SIBLING(dp) = -1;
1626 }
1627
1628 /* This function is normally called by the sender, but the receiving side also
1629  * calls it from get_dirlist() with f set to -1 so that we just construct the
1630  * file list in memory without sending it over the wire.  Also, get_dirlist()
1631  * might call this with f set to -2, which also indicates that local filter
1632  * rules should be ignored. */
1633 static void send_directory(int f, struct file_list *flist, char *fbuf, int len,
1634                            int flags)
1635 {
1636         struct dirent *di;
1637         unsigned remainder;
1638         char *p;
1639         DIR *d;
1640         int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
1641         int start = flist->used;
1642         int filter_level = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
1643
1644         assert(flist != NULL);
1645
1646         if (!(d = opendir(fbuf))) {
1647                 io_error |= IOERR_GENERAL;
1648                 rsyserr(FERROR_XFER, errno, "opendir %s failed", full_fname(fbuf));
1649                 return;
1650         }
1651
1652         p = fbuf + len;
1653         if (len != 1 || *fbuf != '/')
1654                 *p++ = '/';
1655         *p = '\0';
1656         remainder = MAXPATHLEN - (p - fbuf);
1657
1658         for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1659                 char *dname = d_name(di);
1660                 if (dname[0] == '.' && (dname[1] == '\0'
1661                     || (dname[1] == '.' && dname[2] == '\0')))
1662                         continue;
1663                 if (strlcpy(p, dname, remainder) >= remainder) {
1664                         io_error |= IOERR_GENERAL;
1665                         rprintf(FERROR_XFER,
1666                                 "cannot send long-named file %s\n",
1667                                 full_fname(fbuf));
1668                         continue;
1669                 }
1670                 if (dname[0] == '\0') {
1671                         io_error |= IOERR_GENERAL;
1672                         rprintf(FERROR_XFER,
1673                                 "cannot send file with empty name in %s\n",
1674                                 full_fname(fbuf));
1675                         continue;
1676                 }
1677
1678                 send_file_name(f, flist, fbuf, NULL, flags, filter_level);
1679         }
1680
1681         fbuf[len] = '\0';
1682
1683         if (errno) {
1684                 io_error |= IOERR_GENERAL;
1685                 rsyserr(FERROR_XFER, errno, "readdir(%s)", full_fname(fbuf));
1686         }
1687
1688         closedir(d);
1689
1690         if (f >= 0 && recurse && !divert_dirs) {
1691                 int i, end = flist->used - 1;
1692                 /* send_if_directory() bumps flist->used, so use "end". */
1693                 for (i = start; i <= end; i++)
1694                         send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
1695         }
1696 }
1697
1698 static void send_implied_dirs(int f, struct file_list *flist, char *fname,
1699                               char *start, char *limit, int flags, char name_type)
1700 {
1701         static char lastpath[MAXPATHLEN] = "";
1702         static int lastpath_len = 0;
1703         static struct file_struct *lastpath_struct = NULL;
1704         struct file_struct *file;
1705         item_list *relname_list;
1706         relnamecache **rnpp;
1707         int len, need_new_dir, depth = 0;
1708         struct filter_list_struct save_filter_list = filter_list;
1709
1710         flags = (flags | FLAG_IMPLIED_DIR) & ~(FLAG_TOP_DIR | FLAG_CONTENT_DIR);
1711         filter_list.head = filter_list.tail = NULL; /* Don't filter implied dirs. */
1712
1713         if (inc_recurse) {
1714                 if (lastpath_struct && F_PATHNAME(lastpath_struct) == pathname
1715                  && lastpath_len == limit - fname
1716                  && strncmp(lastpath, fname, lastpath_len) == 0)
1717                         need_new_dir = 0;
1718                 else
1719                         need_new_dir = 1;
1720         } else {
1721                 char *tp = fname, *lp = lastpath;
1722                 /* Skip any initial directories in our path that we
1723                  * have in common with lastpath. */
1724                 assert(start == fname);
1725                 for ( ; ; tp++, lp++) {
1726                         if (tp == limit) {
1727                                 if (*lp == '/' || *lp == '\0')
1728                                         goto done;
1729                                 break;
1730                         }
1731                         if (*lp != *tp)
1732                                 break;
1733                         if (*tp == '/') {
1734                                 start = tp;
1735                                 depth++;
1736                         }
1737                 }
1738                 need_new_dir = 1;
1739         }
1740
1741         if (need_new_dir) {
1742                 int save_copy_links = copy_links;
1743                 int save_xfer_dirs = xfer_dirs;
1744                 char *slash;
1745
1746                 copy_links = xfer_dirs = 1;
1747
1748                 *limit = '\0';
1749
1750                 for (slash = start; (slash = strchr(slash+1, '/')) != NULL; ) {
1751                         *slash = '\0';
1752                         file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1753                         depth++;
1754                         if (!inc_recurse && file && S_ISDIR(file->mode))
1755                                 change_local_filter_dir(fname, strlen(fname), depth);
1756                         *slash = '/';
1757                 }
1758
1759                 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1760                 if (inc_recurse) {
1761                         if (file && !S_ISDIR(file->mode))
1762                                 file = NULL;
1763                         lastpath_struct = file;
1764                 } else if (file && S_ISDIR(file->mode))
1765                         change_local_filter_dir(fname, strlen(fname), ++depth);
1766
1767                 strlcpy(lastpath, fname, sizeof lastpath);
1768                 lastpath_len = limit - fname;
1769
1770                 *limit = '/';
1771
1772                 copy_links = save_copy_links;
1773                 xfer_dirs = save_xfer_dirs;
1774
1775                 if (!inc_recurse)
1776                         goto done;
1777         }
1778
1779         if (!lastpath_struct)
1780                 goto done; /* dir must have vanished */
1781
1782         len = strlen(limit+1);
1783         memcpy(&relname_list, F_DIR_RELNAMES_P(lastpath_struct), sizeof relname_list);
1784         if (!relname_list) {
1785                 if (!(relname_list = new0(item_list)))
1786                         out_of_memory("send_implied_dirs");
1787                 memcpy(F_DIR_RELNAMES_P(lastpath_struct), &relname_list, sizeof relname_list);
1788         }
1789         rnpp = EXPAND_ITEM_LIST(relname_list, relnamecache *, 32);
1790         if (!(*rnpp = (relnamecache*)new_array(char, sizeof (relnamecache) + len)))
1791                 out_of_memory("send_implied_dirs");
1792         (*rnpp)->name_type = name_type;
1793         strlcpy((*rnpp)->fname, limit+1, len + 1);
1794
1795 done:
1796         filter_list = save_filter_list;
1797 }
1798
1799 static void send1extra(int f, struct file_struct *file, struct file_list *flist)
1800 {
1801         char fbuf[MAXPATHLEN];
1802         item_list *relname_list;
1803         int len, dlen, flags = FLAG_DIVERT_DIRS | FLAG_CONTENT_DIR;
1804         size_t j;
1805
1806         f_name(file, fbuf);
1807         dlen = strlen(fbuf);
1808
1809         if (!change_pathname(file, NULL, 0))
1810                 exit_cleanup(RERR_FILESELECT);
1811
1812         change_local_filter_dir(fbuf, dlen, send_dir_depth);
1813
1814         if (file->flags & FLAG_CONTENT_DIR) {
1815                 if (one_file_system) {
1816                         STRUCT_STAT st;
1817                         if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
1818                                 io_error |= IOERR_GENERAL;
1819                                 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
1820                                         full_fname(fbuf));
1821                                 return;
1822                         }
1823                         filesystem_dev = st.st_dev;
1824                 }
1825                 send_directory(f, flist, fbuf, dlen, flags);
1826         }
1827
1828         if (!relative_paths)
1829                 return;
1830
1831         memcpy(&relname_list, F_DIR_RELNAMES_P(file), sizeof relname_list);
1832         if (!relname_list)
1833                 return;
1834
1835         for (j = 0; j < relname_list->count; j++) {
1836                 char *slash;
1837                 relnamecache *rnp = ((relnamecache**)relname_list->items)[j];
1838                 char name_type = rnp->name_type;
1839
1840                 fbuf[dlen] = '/';
1841                 len = strlcpy(fbuf + dlen + 1, rnp->fname, sizeof fbuf - dlen - 1);
1842                 free(rnp);
1843                 if (len >= (int)sizeof fbuf)
1844                         continue; /* Impossible... */
1845
1846                 slash = strchr(fbuf+dlen+1, '/');
1847                 if (slash) {
1848                         send_implied_dirs(f, flist, fbuf, fbuf+dlen+1, slash, flags, name_type);
1849                         continue;
1850                 }
1851
1852                 if (name_type != NORMAL_NAME) {
1853                         STRUCT_STAT st;
1854                         if (link_stat(fbuf, &st, 1) != 0) {
1855                                 io_error |= IOERR_GENERAL;
1856                                 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
1857                                         full_fname(fbuf));
1858                                 continue;
1859                         }
1860                         send_file_name(f, flist, fbuf, &st, FLAG_TOP_DIR | flags, ALL_FILTERS);
1861                 } else
1862                         send_file_name(f, flist, fbuf, NULL, FLAG_TOP_DIR | flags, ALL_FILTERS);
1863         }
1864
1865         free(relname_list);
1866 }
1867
1868 void send_extra_file_list(int f, int at_least)
1869 {
1870         struct file_list *flist;
1871         int64 start_write;
1872         uint16 prev_flags;
1873         int old_cnt, save_io_error = io_error;
1874
1875         if (flist_eof)
1876                 return;
1877
1878         /* Keep sending data until we have the requested number of
1879          * files in the upcoming file-lists. */
1880         old_cnt = cur_flist->used;
1881         for (flist = first_flist; flist != cur_flist; flist = flist->next)
1882                 old_cnt += flist->used;
1883         while (file_total - old_cnt < at_least) {
1884                 struct file_struct *file = dir_flist->sorted[send_dir_ndx];
1885                 int dir_ndx, dstart = dir_count;
1886                 const char *pathname = F_PATHNAME(file);
1887                 int32 *dp;
1888
1889                 flist = flist_new(0, "send_extra_file_list");
1890                 start_write = stats.total_written;
1891
1892                 if (unsort_ndx)
1893                         dir_ndx = F_NDX(file);
1894                 else
1895                         dir_ndx = send_dir_ndx;
1896                 write_ndx(f, NDX_FLIST_OFFSET - dir_ndx);
1897                 flist->parent_ndx = dir_ndx;
1898
1899                 send1extra(f, file, flist);
1900                 prev_flags = file->flags;
1901                 dp = F_DIR_NODE_P(file);
1902
1903                 /* If there are any duplicate directory names that follow, we
1904                  * send all the dirs together in one file-list.  The dir_flist
1905                  * tree links all the child subdirs onto the last dup dir. */
1906                 while ((dir_ndx = DIR_NEXT_SIBLING(dp)) >= 0
1907                     && dir_flist->sorted[dir_ndx]->flags & FLAG_DUPLICATE) {
1908                         send_dir_ndx = dir_ndx;
1909                         file = dir_flist->sorted[dir_ndx];
1910                         /* Try to avoid some duplicate scanning of identical dirs. */
1911                         if (F_PATHNAME(file) == pathname && prev_flags & FLAG_CONTENT_DIR)
1912                                 file->flags &= ~FLAG_CONTENT_DIR;
1913                         send1extra(f, file, flist);
1914                         prev_flags = file->flags;
1915                         dp = F_DIR_NODE_P(file);
1916                 }
1917
1918                 write_byte(f, 0);
1919
1920                 if (need_unsorted_flist) {
1921                         if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
1922                                 out_of_memory("send_extra_file_list");
1923                         memcpy(flist->sorted, flist->files,
1924                                flist->used * sizeof (struct file_struct*));
1925                 } else
1926                         flist->sorted = flist->files;
1927
1928                 flist_sort_and_clean(flist, 0);
1929
1930                 add_dirs_to_tree(send_dir_ndx, flist, dir_count - dstart);
1931                 flist_done_allocating(flist);
1932
1933                 file_total += flist->used;
1934                 stats.flist_size += stats.total_written - start_write;
1935                 stats.num_files += flist->used;
1936                 if (DEBUG_GTE(FLIST, 3))
1937                         output_flist(flist);
1938
1939                 if (DIR_FIRST_CHILD(dp) >= 0) {
1940                         send_dir_ndx = DIR_FIRST_CHILD(dp);
1941                         send_dir_depth++;
1942                 } else {
1943                         while (DIR_NEXT_SIBLING(dp) < 0) {
1944                                 if ((send_dir_ndx = DIR_PARENT(dp)) < 0) {
1945                                         write_ndx(f, NDX_FLIST_EOF);
1946                                         flist_eof = 1;
1947                                         change_local_filter_dir(NULL, 0, 0);
1948                                         goto finish;
1949                                 }
1950                                 send_dir_depth--;
1951                                 file = dir_flist->sorted[send_dir_ndx];
1952                                 dp = F_DIR_NODE_P(file);
1953                         }
1954                         send_dir_ndx = DIR_NEXT_SIBLING(dp);
1955                 }
1956         }
1957
1958   finish:
1959         if (io_error != save_io_error && !ignore_errors)
1960                 send_msg_int(MSG_IO_ERROR, io_error);
1961 }
1962
1963 struct file_list *send_file_list(int f, int argc, char *argv[])
1964 {
1965         static const char *lastdir;
1966         static int lastdir_len = -1;
1967         int len, dirlen;
1968         STRUCT_STAT st;
1969         char *p, *dir;
1970         struct file_list *flist;
1971         struct timeval start_tv, end_tv;
1972         int64 start_write;
1973         int use_ff_fd = 0;
1974         int disable_buffering;
1975         int flags = recurse ? FLAG_CONTENT_DIR : 0;
1976         int reading_remotely = filesfrom_host != NULL;
1977         int rl_flags = (reading_remotely ? 0 : RL_DUMP_COMMENTS)
1978 #ifdef ICONV_OPTION
1979                      | (filesfrom_convert ? RL_CONVERT : 0)
1980 #endif
1981                      | (eol_nulls || reading_remotely ? RL_EOL_NULLS : 0);
1982         int implied_dot_dir = 0;
1983
1984         rprintf(FLOG, "building file list\n");
1985         if (show_filelist_p())
1986                 start_filelist_progress("building file list");
1987         else if (inc_recurse && INFO_GTE(FLIST, 1) && !am_server)
1988                 rprintf(FCLIENT, "sending incremental file list\n");
1989
1990         start_write = stats.total_written;
1991         gettimeofday(&start_tv, NULL);
1992
1993         if (!orig_dir)
1994                 orig_dir = strdup(curr_dir);
1995
1996         if (relative_paths && protocol_version >= 30)
1997                 implied_dirs = 1; /* We send flagged implied dirs */
1998
1999 #ifdef SUPPORT_HARD_LINKS
2000         if (preserve_hard_links && protocol_version >= 30 && !cur_flist)
2001                 init_hard_links();
2002 #endif
2003
2004         flist = cur_flist = flist_new(0, "send_file_list");
2005         if (inc_recurse) {
2006                 dir_flist = flist_new(FLIST_TEMP, "send_file_list");
2007                 flags |= FLAG_DIVERT_DIRS;
2008         } else
2009                 dir_flist = cur_flist;
2010
2011         disable_buffering = io_start_buffering_out(f);
2012         if (filesfrom_fd >= 0) {
2013                 if (argv[0] && !change_dir(argv[0], CD_NORMAL)) {
2014                         rsyserr(FERROR_XFER, errno, "change_dir %s failed",
2015                                 full_fname(argv[0]));
2016                         exit_cleanup(RERR_FILESELECT);
2017                 }
2018                 use_ff_fd = 1;
2019         }
2020
2021         while (1) {
2022                 char fbuf[MAXPATHLEN], *fn, name_type;
2023
2024                 if (use_ff_fd) {
2025                         if (read_line(filesfrom_fd, fbuf, sizeof fbuf, rl_flags) == 0)
2026                                 break;
2027                         sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2028                 } else {
2029                         if (argc-- == 0)
2030                                 break;
2031                         strlcpy(fbuf, *argv++, MAXPATHLEN);
2032                         if (sanitize_paths)
2033                                 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2034                 }
2035
2036                 len = strlen(fbuf);
2037                 if (relative_paths) {
2038                         /* We clean up fbuf below. */
2039                         name_type = NORMAL_NAME;
2040                 } else if (!len || fbuf[len - 1] == '/') {
2041                         if (len == 2 && fbuf[0] == '.') {
2042                                 /* Turn "./" into just "." rather than "./." */
2043                                 fbuf[--len] = '\0';
2044                         } else {
2045                                 if (len + 1 >= MAXPATHLEN)
2046                                         overflow_exit("send_file_list");
2047                                 fbuf[len++] = '.';
2048                                 fbuf[len] = '\0';
2049                         }
2050                         name_type = DOTDIR_NAME;
2051                 } else if (len > 1 && fbuf[len-1] == '.' && fbuf[len-2] == '.'
2052                     && (len == 2 || fbuf[len-3] == '/')) {
2053                         if (len + 2 >= MAXPATHLEN)
2054                                 overflow_exit("send_file_list");
2055                         fbuf[len++] = '/';
2056                         fbuf[len++] = '.';
2057                         fbuf[len] = '\0';
2058                         name_type = DOTDIR_NAME;
2059                 } else if (fbuf[len-1] == '.' && (len == 1 || fbuf[len-2] == '/'))
2060                         name_type = DOTDIR_NAME;
2061                 else
2062                         name_type = NORMAL_NAME;
2063
2064                 dir = NULL;
2065
2066                 if (!relative_paths) {
2067                         p = strrchr(fbuf, '/');
2068                         if (p) {
2069                                 *p = '\0';
2070                                 if (p == fbuf)
2071                                         dir = "/";
2072                                 else
2073                                         dir = fbuf;
2074                                 len -= p - fbuf + 1;
2075                                 fn = p + 1;
2076                         } else
2077                                 fn = fbuf;
2078                 } else {
2079                         if ((p = strstr(fbuf, "/./")) != NULL) {
2080                                 *p = '\0';
2081                                 if (p == fbuf)
2082                                         dir = "/";
2083                                 else {
2084                                         dir = fbuf;
2085                                         clean_fname(dir, 0);
2086                                 }
2087                                 fn = p + 3;
2088                                 while (*fn == '/')
2089                                         fn++;
2090                                 if (!*fn)
2091                                         *--fn = '\0'; /* ensure room for '.' */
2092                         } else
2093                                 fn = fbuf;
2094                         /* A leading ./ can be used in relative mode to affect
2095                          * the dest dir without its name being in the path. */
2096                         if (*fn == '.' && fn[1] == '/' && !implied_dot_dir) {
2097                                 send_file_name(f, flist, ".", NULL,
2098                                     (flags | FLAG_IMPLIED_DIR) & ~FLAG_CONTENT_DIR,
2099                                     ALL_FILTERS);
2100                                 implied_dot_dir = 1;
2101                         }
2102                         len = clean_fname(fn, CFN_KEEP_TRAILING_SLASH
2103                                             | CFN_DROP_TRAILING_DOT_DIR);
2104                         if (len == 1) {
2105                                 if (fn[0] == '/') {
2106                                         fn = "/.";
2107                                         len = 2;
2108                                         name_type = DOTDIR_NAME;
2109                                 } else if (fn[0] == '.')
2110                                         name_type = DOTDIR_NAME;
2111                         } else if (fn[len-1] == '/') {
2112                                 fn[--len] = '\0';
2113                                 if (len == 1 && *fn == '.')
2114                                         name_type = DOTDIR_NAME;
2115                                 else
2116                                         name_type = SLASH_ENDING_NAME;
2117                         }
2118                         /* Reject a ".." dir in the active part of the path. */
2119                         for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
2120                                 if ((p[2] == '/' || p[2] == '\0')
2121                                  && (p == fn || p[-1] == '/')) {
2122                                         rprintf(FERROR,
2123                                             "found \"..\" dir in relative path: %s\n",
2124                                             fn);
2125                                         exit_cleanup(RERR_SYNTAX);
2126                                 }
2127                         }
2128                 }
2129
2130                 if (!*fn) {
2131                         len = 1;
2132                         fn = ".";
2133                         name_type = DOTDIR_NAME;
2134                 }
2135
2136                 dirlen = dir ? strlen(dir) : 0;
2137                 if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
2138                         if (!change_pathname(NULL, dir, -dirlen))
2139                                 continue;
2140                         lastdir = pathname;
2141                         lastdir_len = pathname_len;
2142                 } else if (!change_pathname(NULL, lastdir, lastdir_len))
2143                         continue;
2144
2145                 if (fn != fbuf)
2146                         memmove(fbuf, fn, len + 1);
2147
2148                 if (link_stat(fbuf, &st, copy_dirlinks || name_type != NORMAL_NAME) != 0
2149                  || (name_type != DOTDIR_NAME && is_daemon_excluded(fbuf, S_ISDIR(st.st_mode)))
2150                  || (relative_paths && path_is_daemon_excluded(fbuf, 1))) {
2151                         io_error |= IOERR_GENERAL;
2152                         rsyserr(FERROR_XFER, errno, "link_stat %s failed",
2153                                 full_fname(fbuf));
2154                         continue;
2155                 }
2156
2157                 /* A dot-dir should not be excluded! */
2158                 if (name_type != DOTDIR_NAME
2159                  && is_excluded(fbuf, S_ISDIR(st.st_mode) != 0, ALL_FILTERS))
2160                         continue;
2161
2162                 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
2163                         rprintf(FINFO, "skipping directory %s\n", fbuf);
2164                         continue;
2165                 }
2166
2167                 if (inc_recurse && relative_paths && *fbuf) {
2168                         if ((p = strchr(fbuf+1, '/')) != NULL) {
2169                                 if (p - fbuf == 1 && *fbuf == '.') {
2170                                         if ((fn = strchr(p+1, '/')) != NULL)
2171                                                 p = fn;
2172                                 } else
2173                                         fn = p;
2174                                 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, name_type);
2175                                 if (fn == p)
2176                                         continue;
2177                         }
2178                 } else if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
2179                         /* Send the implied directories at the start of the
2180                          * source spec, so we get their permissions right. */
2181                         send_implied_dirs(f, flist, fbuf, fbuf, p, flags, 0);
2182                 }
2183
2184                 if (one_file_system)
2185                         filesystem_dev = st.st_dev;
2186
2187                 if (recurse || (xfer_dirs && name_type != NORMAL_NAME)) {
2188                         struct file_struct *file;
2189                         file = send_file_name(f, flist, fbuf, &st,
2190                                               FLAG_TOP_DIR | FLAG_CONTENT_DIR | flags,
2191                                               NO_FILTERS);
2192                         if (!file)
2193                                 continue;
2194                         if (inc_recurse) {
2195                                 if (name_type == DOTDIR_NAME) {
2196                                         if (send_dir_depth < 0) {
2197                                                 send_dir_depth = 0;
2198                                                 change_local_filter_dir(fbuf, len, send_dir_depth);
2199                                         }
2200                                         send_directory(f, flist, fbuf, len, flags);
2201                                 }
2202                         } else
2203                                 send_if_directory(f, flist, file, fbuf, len, flags);
2204                 } else
2205                         send_file_name(f, flist, fbuf, &st, flags, NO_FILTERS);
2206         }
2207
2208         gettimeofday(&end_tv, NULL);
2209         stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2210                               + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2211         if (stats.flist_buildtime == 0)
2212                 stats.flist_buildtime = 1;
2213         start_tv = end_tv;
2214
2215         write_byte(f, 0); /* Indicate end of file list */
2216
2217 #ifdef SUPPORT_HARD_LINKS
2218         if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
2219                 idev_destroy();
2220 #endif
2221
2222         if (show_filelist_p())
2223                 finish_filelist_progress(flist);
2224
2225         gettimeofday(&end_tv, NULL);
2226         stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2227                              + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2228
2229         /* When converting names, both sides keep an unsorted file-list array
2230          * because the names will differ on the sending and receiving sides
2231          * (both sides will use the unsorted index number for each item). */
2232
2233         /* Sort the list without removing any duplicates.  This allows the
2234          * receiving side to ask for whatever name it kept.  For incremental
2235          * recursion mode, the sender marks duplicate dirs so that it can
2236          * send them together in a single file-list. */
2237         if (need_unsorted_flist) {
2238                 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2239                         out_of_memory("send_file_list");
2240                 memcpy(flist->sorted, flist->files,
2241                        flist->used * sizeof (struct file_struct*));
2242         } else
2243                 flist->sorted = flist->files;
2244         flist_sort_and_clean(flist, 0);
2245         file_total += flist->used;
2246
2247         if (numeric_ids <= 0 && !inc_recurse)
2248                 send_id_list(f);
2249
2250         /* send the io_error flag */
2251         if (protocol_version < 30)
2252                 write_int(f, ignore_errors ? 0 : io_error);
2253         else if (io_error && !ignore_errors)
2254                 send_msg_int(MSG_IO_ERROR, io_error);
2255
2256         if (disable_buffering)
2257                 io_end_buffering_out();
2258
2259         stats.flist_size = stats.total_written - start_write;
2260         stats.num_files = flist->used;
2261
2262         if (DEBUG_GTE(FLIST, 3))
2263                 output_flist(flist);
2264
2265         if (DEBUG_GTE(FLIST, 2))
2266                 rprintf(FINFO, "send_file_list done\n");
2267
2268         if (inc_recurse) {
2269                 send_dir_depth = 1;
2270                 add_dirs_to_tree(-1, flist, dir_count);
2271                 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2272                         flist->parent_ndx = -1;
2273                 flist_done_allocating(flist);
2274                 if (send_dir_ndx < 0) {
2275                         write_ndx(f, NDX_FLIST_EOF);
2276                         flist_eof = 1;
2277                 }
2278                 else if (file_total == 1) {
2279                         /* If we're creating incremental file-lists and there
2280                          * was just 1 item in the first file-list, send 1 more
2281                          * file-list to check if this is a 1-file xfer. */
2282                         send_extra_file_list(f, 1);
2283                 }
2284         }
2285
2286         return flist;
2287 }
2288
2289 struct file_list *recv_file_list(int f)
2290 {
2291         struct file_list *flist;
2292         int dstart, flags;
2293         int64 start_read;
2294
2295         if (!first_flist) {
2296                 if (show_filelist_p())
2297                         start_filelist_progress("receiving file list");
2298                 else if (inc_recurse && INFO_GTE(FLIST, 1) && !am_server)
2299                         rprintf(FCLIENT, "receiving incremental file list\n");
2300                 rprintf(FLOG, "receiving file list\n");
2301         }
2302
2303         start_read = stats.total_read;
2304
2305 #ifdef SUPPORT_HARD_LINKS
2306         if (preserve_hard_links && !first_flist)
2307                 init_hard_links();
2308 #endif
2309
2310         flist = flist_new(0, "recv_file_list");
2311
2312         if (inc_recurse) {
2313                 if (flist->ndx_start == 1)
2314                         dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
2315                 dstart = dir_flist->used;
2316         } else {
2317                 dir_flist = flist;
2318                 dstart = 0;
2319         }
2320
2321         while ((flags = read_byte(f)) != 0) {
2322                 struct file_struct *file;
2323
2324                 flist_expand(flist, 1);
2325
2326                 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
2327                         flags |= read_byte(f) << 8;
2328                 file = recv_file_entry(flist, flags, f);
2329
2330                 if (inc_recurse && S_ISDIR(file->mode)) {
2331                         flist_expand(dir_flist, 1);
2332                         dir_flist->files[dir_flist->used++] = file;
2333                 }
2334
2335                 flist->files[flist->used++] = file;
2336
2337                 maybe_emit_filelist_progress(flist->used);
2338
2339                 if (DEBUG_GTE(FLIST, 2)) {
2340                         char *name = f_name(file, NULL);
2341                         rprintf(FINFO, "recv_file_name(%s)\n", NS(name));
2342                 }
2343         }
2344         file_total += flist->used;
2345
2346         if (DEBUG_GTE(FLIST, 2))
2347                 rprintf(FINFO, "received %d names\n", flist->used);
2348
2349         if (show_filelist_p())
2350                 finish_filelist_progress(flist);
2351
2352         if (need_unsorted_flist) {
2353                 /* Create an extra array of index pointers that we can sort for
2354                  * the generator's use (for wading through the files in sorted
2355                  * order and for calling flist_find()).  We keep the "files"
2356                  * list unsorted for our exchange of index numbers with the
2357                  * other side (since their names may not sort the same). */
2358                 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2359                         out_of_memory("recv_file_list");
2360                 memcpy(flist->sorted, flist->files,
2361                        flist->used * sizeof (struct file_struct*));
2362                 if (inc_recurse && dir_flist->used > dstart) {
2363                         static int dir_flist_malloced = 0;
2364                         if (dir_flist_malloced < dir_flist->malloced) {
2365                                 dir_flist->sorted = realloc_array(dir_flist->sorted,
2366                                                         struct file_struct *,
2367                                                         dir_flist->malloced);
2368                                 dir_flist_malloced = dir_flist->malloced;
2369                         }
2370                         memcpy(dir_flist->sorted + dstart, dir_flist->files + dstart,
2371                                (dir_flist->used - dstart) * sizeof (struct file_struct*));
2372                         fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2373                 }
2374         } else {
2375                 flist->sorted = flist->files;
2376                 if (inc_recurse && dir_flist->used > dstart) {
2377                         dir_flist->sorted = dir_flist->files;
2378                         fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2379                 }
2380         }
2381
2382         if (inc_recurse)
2383                 flist_done_allocating(flist);
2384         else if (f >= 0)
2385                 recv_id_list(f, flist);
2386
2387         flist_sort_and_clean(flist, relative_paths);
2388
2389         if (protocol_version < 30) {
2390                 /* Recv the io_error flag */
2391                 if (ignore_errors)
2392                         read_int(f);
2393                 else
2394                         io_error |= read_int(f);
2395         } else if (inc_recurse && flist->ndx_start == 1) {
2396                 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2397                         flist->parent_ndx = -1;
2398         }
2399
2400         if (DEBUG_GTE(FLIST, 3))
2401                 output_flist(flist);
2402
2403         if (DEBUG_GTE(FLIST, 2))
2404                 rprintf(FINFO, "recv_file_list done\n");
2405
2406         stats.flist_size += stats.total_read - start_read;
2407         stats.num_files += flist->used;
2408
2409         return flist;
2410 }
2411
2412 /* This is only used once by the receiver if the very first file-list
2413  * has exactly one item in it. */
2414 void recv_additional_file_list(int f)
2415 {
2416         struct file_list *flist;
2417         int ndx = read_ndx(f);
2418         if (ndx == NDX_FLIST_EOF) {
2419                 flist_eof = 1;
2420                 change_local_filter_dir(NULL, 0, 0);
2421         } else {
2422                 ndx = NDX_FLIST_OFFSET - ndx;
2423                 if (ndx < 0 || ndx >= dir_flist->used) {
2424                         ndx = NDX_FLIST_OFFSET - ndx;
2425                         rprintf(FERROR,
2426                                 "[%s] Invalid dir index: %d (%d - %d)\n",
2427                                 who_am_i(), ndx, NDX_FLIST_OFFSET,
2428                                 NDX_FLIST_OFFSET - dir_flist->used + 1);
2429                         exit_cleanup(RERR_PROTOCOL);
2430                 }
2431                 if (DEBUG_GTE(FLIST, 3)) {
2432                         rprintf(FINFO, "[%s] receiving flist for dir %d\n",
2433                                 who_am_i(), ndx);
2434                 }
2435                 flist = recv_file_list(f);
2436                 flist->parent_ndx = ndx;
2437         }
2438 }
2439
2440 /* Search for an identically-named item in the file list.  Note that the
2441  * items must agree in their directory-ness, or no match is returned. */
2442 int flist_find(struct file_list *flist, struct file_struct *f)
2443 {
2444         int low = flist->low, high = flist->high;
2445         int diff, mid, mid_up;
2446
2447         while (low <= high) {
2448                 mid = (low + high) / 2;
2449                 if (F_IS_ACTIVE(flist->sorted[mid]))
2450                         mid_up = mid;
2451                 else {
2452                         /* Scan for the next non-empty entry using the cached
2453                          * distance values.  If the value isn't fully up-to-
2454                          * date, update it. */
2455                         mid_up = mid + F_DEPTH(flist->sorted[mid]);
2456                         if (!F_IS_ACTIVE(flist->sorted[mid_up])) {
2457                                 do {
2458                                     mid_up += F_DEPTH(flist->sorted[mid_up]);
2459                                 } while (!F_IS_ACTIVE(flist->sorted[mid_up]));
2460                                 F_DEPTH(flist->sorted[mid]) = mid_up - mid;
2461                         }
2462                         if (mid_up > high) {
2463                                 /* If there's nothing left above us, set high to
2464                                  * a non-empty entry below us and continue. */
2465                                 high = mid - (int)flist->sorted[mid]->len32;
2466                                 if (!F_IS_ACTIVE(flist->sorted[high])) {
2467                                         do {
2468                                             high -= (int)flist->sorted[high]->len32;
2469                                         } while (!F_IS_ACTIVE(flist->sorted[high]));
2470                                         flist->sorted[mid]->len32 = mid - high;
2471                                 }
2472                                 continue;
2473                         }
2474                 }
2475                 diff = f_name_cmp(flist->sorted[mid_up], f);
2476                 if (diff == 0) {
2477                         if (protocol_version < 29
2478                             && S_ISDIR(flist->sorted[mid_up]->mode)
2479                             != S_ISDIR(f->mode))
2480                                 return -1;
2481                         return mid_up;
2482                 }
2483                 if (diff < 0)
2484                         low = mid_up + 1;
2485                 else
2486                         high = mid - 1;
2487         }
2488         return -1;
2489 }
2490
2491 /*
2492  * Free up any resources a file_struct has allocated
2493  * and clear the file.
2494  */
2495 void clear_file(struct file_struct *file)
2496 {
2497         /* The +1 zeros out the first char of the basename. */
2498         memset(file, 0, FILE_STRUCT_LEN + 1);
2499         /* In an empty entry, F_DEPTH() is an offset to the next non-empty
2500          * entry.  Likewise for len32 in the opposite direction.  We assume
2501          * that we're alone for now since flist_find() will adjust the counts
2502          * it runs into that aren't up-to-date. */
2503         file->len32 = F_DEPTH(file) = 1;
2504 }
2505
2506 /* Allocate a new file list. */
2507 struct file_list *flist_new(int flags, char *msg)
2508 {
2509         struct file_list *flist;
2510
2511         if (!(flist = new0(struct file_list)))
2512                 out_of_memory(msg);
2513
2514         if (flags & FLIST_TEMP) {
2515                 if (!(flist->file_pool = pool_create(SMALL_EXTENT, 0,
2516                                                      out_of_memory,
2517                                                      POOL_INTERN)))
2518                         out_of_memory(msg);
2519         } else {
2520                 /* This is a doubly linked list with prev looping back to
2521                  * the end of the list, but the last next pointer is NULL. */
2522                 if (!first_flist) {
2523                         flist->file_pool = pool_create(NORMAL_EXTENT, 0,
2524                                                        out_of_memory,
2525                                                        POOL_INTERN);
2526                         if (!flist->file_pool)
2527                                 out_of_memory(msg);
2528
2529                         flist->ndx_start = flist->flist_num = inc_recurse ? 1 : 0;
2530
2531                         first_flist = cur_flist = flist->prev = flist;
2532                 } else {
2533                         struct file_list *prev = first_flist->prev;
2534
2535                         flist->file_pool = first_flist->file_pool;
2536
2537                         flist->ndx_start = prev->ndx_start + prev->used + 1;
2538                         flist->flist_num = prev->flist_num + 1;
2539
2540                         flist->prev = prev;
2541                         prev->next = first_flist->prev = flist;
2542                 }
2543                 flist->pool_boundary = pool_boundary(flist->file_pool, 0);
2544                 flist_cnt++;
2545         }
2546
2547         return flist;
2548 }
2549
2550 /* Free up all elements in a flist. */
2551 void flist_free(struct file_list *flist)
2552 {
2553         if (!flist->prev) {
2554                 /* Was FLIST_TEMP dir-list. */
2555         } else if (flist == flist->prev) {
2556                 first_flist = cur_flist = NULL;
2557                 file_total = 0;
2558                 flist_cnt = 0;
2559         } else {
2560                 if (flist == cur_flist)
2561                         cur_flist = flist->next;
2562                 if (flist == first_flist)
2563                         first_flist = first_flist->next;
2564                 else {
2565                         flist->prev->next = flist->next;
2566                         if (!flist->next)
2567                                 flist->next = first_flist;
2568                 }
2569                 flist->next->prev = flist->prev;
2570                 file_total -= flist->used;
2571                 flist_cnt--;
2572         }
2573
2574         if (!flist->prev || !flist_cnt)
2575                 pool_destroy(flist->file_pool);
2576         else
2577                 pool_free_old(flist->file_pool, flist->pool_boundary);
2578
2579         if (flist->sorted && flist->sorted != flist->files)
2580                 free(flist->sorted);
2581         free(flist->files);
2582         free(flist);
2583 }
2584
2585 /* This routine ensures we don't have any duplicate names in our file list.
2586  * duplicate names can cause corruption because of the pipelining. */
2587 static void flist_sort_and_clean(struct file_list *flist, int strip_root)
2588 {
2589         char fbuf[MAXPATHLEN];
2590         int i, prev_i;
2591
2592         if (!flist)
2593                 return;
2594         if (flist->used == 0) {
2595                 flist->high = -1;
2596                 flist->low = 0;
2597                 return;
2598         }
2599
2600         fsort(flist->sorted, flist->used);
2601
2602         if (!am_sender || inc_recurse) {
2603                 for (i = prev_i = 0; i < flist->used; i++) {
2604                         if (F_IS_ACTIVE(flist->sorted[i])) {
2605                                 prev_i = i;
2606                                 break;
2607                         }
2608                 }
2609                 flist->low = prev_i;
2610         } else {
2611                 i = prev_i = flist->used - 1;
2612                 flist->low = 0;
2613         }
2614
2615         while (++i < flist->used) {
2616                 int j;
2617                 struct file_struct *file = flist->sorted[i];
2618
2619                 if (!F_IS_ACTIVE(file))
2620                         continue;
2621                 if (f_name_cmp(file, flist->sorted[prev_i]) == 0)
2622                         j = prev_i;
2623                 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
2624                         int save_mode = file->mode;
2625                         /* Make sure that this directory doesn't duplicate a
2626                          * non-directory earlier in the list. */
2627                         flist->high = prev_i;
2628                         file->mode = S_IFREG;
2629                         j = flist_find(flist, file);
2630                         file->mode = save_mode;
2631                 } else
2632                         j = -1;
2633                 if (j >= 0) {
2634                         int keep, drop;
2635                         /* If one is a dir and the other is not, we want to
2636                          * keep the dir because it might have contents in the
2637                          * list.  Otherwise keep the first one. */
2638                         if (S_ISDIR(file->mode)) {
2639                                 struct file_struct *fp = flist->sorted[j];
2640                                 if (!S_ISDIR(fp->mode))
2641                                         keep = i, drop = j;
2642                                 else {
2643                                         if (am_sender)
2644                                                 file->flags |= FLAG_DUPLICATE;
2645                                         else { /* Make sure we merge our vital flags. */
2646                                                 fp->flags |= file->flags & (FLAG_TOP_DIR|FLAG_CONTENT_DIR);
2647                                                 fp->flags &= file->flags | ~FLAG_IMPLIED_DIR;
2648                                         }
2649                                         keep = j, drop = i;
2650                                 }
2651                         } else
2652                                 keep = j, drop = i;
2653
2654                         if (!am_sender) {
2655                                 if (DEBUG_GTE(DUP, 1)) {
2656                                         rprintf(FINFO,
2657                                             "removing duplicate name %s from file list (%d)\n",
2658                                             f_name(file, fbuf), drop + flist->ndx_start);
2659                                 }
2660                                 clear_file(flist->sorted[drop]);
2661                         }
2662
2663                         if (keep == i) {
2664                                 if (flist->low == drop) {
2665                                         for (j = drop + 1;
2666                                              j < i && !F_IS_ACTIVE(flist->sorted[j]);
2667                                              j++) {}
2668                                         flist->low = j;
2669                                 }
2670                                 prev_i = i;
2671                         }
2672                 } else
2673                         prev_i = i;
2674         }
2675         flist->high = prev_i;
2676
2677         if (strip_root) {
2678                 /* We need to strip off the leading slashes for relative
2679                  * paths, but this must be done _after_ the sorting phase. */
2680                 for (i = flist->low; i <= flist->high; i++) {
2681                         struct file_struct *file = flist->sorted[i];
2682
2683                         if (!file->dirname)
2684                                 continue;
2685                         while (*file->dirname == '/')
2686                                 file->dirname++;
2687                         if (!*file->dirname)
2688                                 file->dirname = NULL;
2689                 }
2690         }
2691
2692         if (prune_empty_dirs && !am_sender) {
2693                 int j, prev_depth = 0;
2694
2695                 prev_i = 0; /* It's OK that this isn't really true. */
2696
2697                 for (i = flist->low; i <= flist->high; i++) {
2698                         struct file_struct *fp, *file = flist->sorted[i];
2699
2700                         /* This temporarily abuses the F_DEPTH() value for a
2701                          * directory that is in a chain that might get pruned.
2702                          * We restore the old value if it gets a reprieve. */
2703                         if (S_ISDIR(file->mode) && F_DEPTH(file)) {
2704                                 /* Dump empty dirs when coming back down. */
2705                                 for (j = prev_depth; j >= F_DEPTH(file); j--) {
2706                                         fp = flist->sorted[prev_i];
2707                                         if (F_DEPTH(fp) >= 0)
2708                                                 break;
2709                                         prev_i = -F_DEPTH(fp)-1;
2710                                         clear_file(fp);
2711                                 }
2712                                 prev_depth = F_DEPTH(file);
2713                                 if (is_excluded(f_name(file, fbuf), 1,
2714                                                        ALL_FILTERS)) {
2715                                         /* Keep dirs through this dir. */
2716                                         for (j = prev_depth-1; ; j--) {
2717                                                 fp = flist->sorted[prev_i];
2718                                                 if (F_DEPTH(fp) >= 0)
2719                                                         break;
2720                                                 prev_i = -F_DEPTH(fp)-1;
2721                                                 F_DEPTH(fp) = j;
2722                                         }
2723                                 } else
2724                                         F_DEPTH(file) = -prev_i-1;
2725                                 prev_i = i;
2726                         } else {
2727                                 /* Keep dirs through this non-dir. */
2728                                 for (j = prev_depth; ; j--) {
2729                                         fp = flist->sorted[prev_i];
2730                                         if (F_DEPTH(fp) >= 0)
2731                                                 break;
2732                                         prev_i = -F_DEPTH(fp)-1;
2733                                         F_DEPTH(fp) = j;
2734                                 }
2735                         }
2736                 }
2737                 /* Dump all remaining empty dirs. */
2738                 while (1) {
2739                         struct file_struct *fp = flist->sorted[prev_i];
2740                         if (F_DEPTH(fp) >= 0)
2741                                 break;
2742                         prev_i = -F_DEPTH(fp)-1;
2743                         clear_file(fp);
2744                 }
2745
2746                 for (i = flist->low; i <= flist->high; i++) {
2747                         if (F_IS_ACTIVE(flist->sorted[i]))
2748                                 break;
2749                 }
2750                 flist->low = i;
2751                 for (i = flist->high; i >= flist->low; i--) {
2752                         if (F_IS_ACTIVE(flist->sorted[i]))
2753                                 break;
2754                 }
2755                 flist->high = i;
2756         }
2757 }
2758
2759 static void output_flist(struct file_list *flist)
2760 {
2761         char uidbuf[16], gidbuf[16], depthbuf[16];
2762         struct file_struct *file;
2763         const char *root, *dir, *slash, *name, *trail;
2764         const char *who = who_am_i();
2765         int i;
2766
2767         rprintf(FINFO, "[%s] flist start=%d, used=%d, low=%d, high=%d\n",
2768                 who, flist->ndx_start, flist->used, flist->low, flist->high);
2769         for (i = 0; i < flist->used; i++) {
2770                 file = flist->files[i];
2771                 if ((am_root || am_sender) && uid_ndx) {
2772                         snprintf(uidbuf, sizeof uidbuf, " uid=%u",
2773                                  F_OWNER(file));
2774                 } else
2775                         *uidbuf = '\0';
2776                 if (gid_ndx) {
2777                         static char parens[] = "(\0)\0\0\0";
2778                         char *pp = parens + (file->flags & FLAG_SKIP_GROUP ? 0 : 3);
2779                         snprintf(gidbuf, sizeof gidbuf, " gid=%s%u%s",
2780                                  pp, F_GROUP(file), pp + 2);
2781                 } else
2782                         *gidbuf = '\0';
2783                 if (!am_sender)
2784                         snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
2785                 if (F_IS_ACTIVE(file)) {
2786                         root = am_sender ? NS(F_PATHNAME(file)) : depthbuf;
2787                         if ((dir = file->dirname) == NULL)
2788                                 dir = slash = "";
2789                         else
2790                                 slash = "/";
2791                         name = file->basename;
2792                         trail = S_ISDIR(file->mode) ? "/" : "";
2793                 } else
2794                         root = dir = slash = name = trail = "";
2795                 rprintf(FINFO,
2796                         "[%s] i=%d %s %s%s%s%s mode=0%o len=%s%s%s flags=%x\n",
2797                         who, i + flist->ndx_start,
2798                         root, dir, slash, name, trail,
2799                         (int)file->mode, big_num(F_LENGTH(file), 0),
2800                         uidbuf, gidbuf, file->flags);
2801         }
2802 }
2803
2804 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
2805 enum fnc_type { t_PATH, t_ITEM };
2806
2807 static int found_prefix;
2808
2809 /* Compare the names of two file_struct entities, similar to how strcmp()
2810  * would do if it were operating on the joined strings.
2811  *
2812  * Some differences beginning with protocol_version 29: (1) directory names
2813  * are compared with an assumed trailing slash so that they compare in a
2814  * way that would cause them to sort immediately prior to any content they
2815  * may have; (2) a directory of any name compares after a non-directory of
2816  * any name at the same depth; (3) a directory with name "." compares prior
2817  * to anything else.  These changes mean that a directory and a non-dir
2818  * with the same name will not compare as equal (protocol_version >= 29).
2819  *
2820  * The dirname component can be an empty string, but the basename component
2821  * cannot (and never is in the current codebase).  The basename component
2822  * may be NULL (for a removed item), in which case it is considered to be
2823  * after any existing item. */
2824 int f_name_cmp(const struct file_struct *f1, const struct file_struct *f2)
2825 {
2826         int dif;
2827         const uchar *c1, *c2;
2828         enum fnc_state state1, state2;
2829         enum fnc_type type1, type2;
2830         enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
2831
2832         if (!f1 || !F_IS_ACTIVE(f1)) {
2833                 if (!f2 || !F_IS_ACTIVE(f2))
2834                         return 0;
2835                 return -1;
2836         }
2837         if (!f2 || !F_IS_ACTIVE(f2))
2838                 return 1;
2839
2840         c1 = (uchar*)f1->dirname;
2841         c2 = (uchar*)f2->dirname;
2842         if (c1 == c2)
2843                 c1 = c2 = NULL;
2844         if (!c1) {
2845                 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2846                 c1 = (const uchar*)f1->basename;
2847                 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2848                         type1 = t_ITEM;
2849                         state1 = s_TRAILING;
2850                         c1 = (uchar*)"";
2851                 } else
2852                         state1 = s_BASE;
2853         } else {
2854                 type1 = t_path;
2855                 state1 = s_DIR;
2856         }
2857         if (!c2) {
2858                 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2859                 c2 = (const uchar*)f2->basename;
2860                 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2861                         type2 = t_ITEM;
2862                         state2 = s_TRAILING;
2863                         c2 = (uchar*)"";
2864                 } else
2865                         state2 = s_BASE;
2866         } else {
2867                 type2 = t_path;
2868                 state2 = s_DIR;
2869         }
2870
2871         if (type1 != type2)
2872                 return type1 == t_PATH ? 1 : -1;
2873
2874         do {
2875                 if (!*c1) {
2876                         switch (state1) {
2877                         case s_DIR:
2878                                 state1 = s_SLASH;
2879                                 c1 = (uchar*)"/";
2880                                 break;
2881                         case s_SLASH:
2882                                 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2883                                 c1 = (const uchar*)f1->basename;
2884                                 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2885                                         type1 = t_ITEM;
2886                                         state1 = s_TRAILING;
2887                                         c1 = (uchar*)"";
2888                                 } else
2889                                         state1 = s_BASE;
2890                                 break;
2891                         case s_BASE:
2892                                 state1 = s_TRAILING;
2893                                 if (type1 == t_PATH) {
2894                                         c1 = (uchar*)"/";
2895                                         break;
2896                                 }
2897                                 /* FALL THROUGH */
2898                         case s_TRAILING:
2899                                 type1 = t_ITEM;
2900                                 break;
2901                         }
2902                         if (*c2 && type1 != type2)
2903                                 return type1 == t_PATH ? 1 : -1;
2904                 }
2905                 if (!*c2) {
2906                         switch (state2) {
2907                         case s_DIR:
2908                                 state2 = s_SLASH;
2909                                 c2 = (uchar*)"/";
2910                                 break;
2911                         case s_SLASH:
2912                                 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2913                                 c2 = (const uchar*)f2->basename;
2914                                 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2915                                         type2 = t_ITEM;
2916                                         state2 = s_TRAILING;
2917                                         c2 = (uchar*)"";
2918                                 } else
2919                                         state2 = s_BASE;
2920                                 break;
2921                         case s_BASE:
2922                                 state2 = s_TRAILING;
2923                                 if (type2 == t_PATH) {
2924                                         c2 = (uchar*)"/";
2925                                         break;
2926                                 }
2927                                 /* FALL THROUGH */
2928                         case s_TRAILING:
2929                                 found_prefix = 1;
2930                                 if (!*c1)
2931                                         return 0;
2932                                 type2 = t_ITEM;
2933                                 break;
2934                         }
2935                         if (type1 != type2)
2936                                 return type1 == t_PATH ? 1 : -1;
2937                 }
2938         } while ((dif = (int)*c1++ - (int)*c2++) == 0);
2939
2940         return dif;
2941 }
2942
2943 /* Returns 1 if f1's filename has all of f2's filename as a prefix.  This does
2944  * not match if f2's basename is not an exact match of a path element in f1.
2945  * E.g. /path/foo is not a prefix of /path/foobar/baz, but /path/foobar is. */
2946 int f_name_has_prefix(const struct file_struct *f1, const struct file_struct *f2)
2947 {
2948         found_prefix = 0;
2949         f_name_cmp(f1, f2);
2950         return found_prefix;
2951 }
2952
2953 char *f_name_buf(void)
2954 {
2955         static char names[5][MAXPATHLEN];
2956         static unsigned int n;
2957
2958         n = (n + 1) % (sizeof names / sizeof names[0]);
2959
2960         return names[n];
2961 }
2962
2963 /* Return a copy of the full filename of a flist entry, using the indicated
2964  * buffer or one of 5 static buffers if fbuf is NULL.  No size-checking is
2965  * done because we checked the size when creating the file_struct entry.
2966  */
2967 char *f_name(const struct file_struct *f, char *fbuf)
2968 {
2969         if (!f || !F_IS_ACTIVE(f))
2970                 return NULL;
2971
2972         if (!fbuf)
2973                 fbuf = f_name_buf();
2974
2975         if (f->dirname) {
2976                 int len = strlen(f->dirname);
2977                 memcpy(fbuf, f->dirname, len);
2978                 fbuf[len] = '/';
2979                 strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
2980         } else
2981                 strlcpy(fbuf, f->basename, MAXPATHLEN);
2982
2983         return fbuf;
2984 }
2985
2986 /* Do a non-recursive scan of the named directory, possibly ignoring all
2987  * exclude rules except for the daemon's.  If "dlen" is >=0, it is the length
2988  * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
2989  * buffer (the functions we call will append names onto the end, but the old
2990  * dir value will be restored on exit). */
2991 struct file_list *get_dirlist(char *dirname, int dlen, int ignore_filter_rules)
2992 {
2993         struct file_list *dirlist;
2994         char dirbuf[MAXPATHLEN];
2995         int save_recurse = recurse;
2996         int save_xfer_dirs = xfer_dirs;
2997         int save_prune_empty_dirs = prune_empty_dirs;
2998
2999         if (dlen < 0) {
3000                 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
3001                 if (dlen >= MAXPATHLEN)
3002                         return NULL;
3003                 dirname = dirbuf;
3004         }
3005
3006         dirlist = flist_new(FLIST_TEMP, "get_dirlist");
3007
3008         recurse = 0;
3009         xfer_dirs = 1;
3010         send_directory(ignore_filter_rules ? -2 : -1, dirlist, dirname, dlen, 0);
3011         xfer_dirs = save_xfer_dirs;
3012         recurse = save_recurse;
3013         if (INFO_GTE(PROGRESS, 1))
3014                 flist_count_offset += dirlist->used;
3015
3016         prune_empty_dirs = 0;
3017         dirlist->sorted = dirlist->files;
3018         flist_sort_and_clean(dirlist, 0);
3019         prune_empty_dirs = save_prune_empty_dirs;
3020
3021         if (DEBUG_GTE(FLIST, 3))
3022                 output_flist(dirlist);
3023
3024         return dirlist;
3025 }