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 sender_symlink_iconv;
  69 extern int output_needs_newline;
  70 extern int sender_keeps_checksum;
  71 extern int unsort_ndx;
  72 extern struct stats stats;
  73 extern char *filesfrom_host;
  74
  75 extern char curr_dir[MAXPATHLEN];
  76
  77 extern struct chmod_mode_struct *chmod_modes;
  78
  79 extern struct filter_list_struct filter_list;
  80 extern struct filter_list_struct daemon_filter_list;
  81
  82 #ifdef ICONV_OPTION
  83 extern int filesfrom_convert;
  84 extern iconv_t ic_send, ic_recv;
  85 #endif
  86
  87 #define PTR_SIZE (sizeof (struct file_struct *))
  88
  89 int io_error;
  90 int checksum_len;
  91 dev_t filesystem_dev; /* used to implement -x */
  92
  93 struct file_list *cur_flist, *first_flist, *dir_flist;
  94 int send_dir_ndx = -1, send_dir_depth = -1;
  95 int flist_cnt = 0; /* how many (non-tmp) file list objects exist */
  96 int file_total = 0; /* total of all active items over all file-lists */
  97 int flist_eof = 0; /* all the file-lists are now known */
  98
  99 #define NORMAL_NAME 0
 100 #define SLASH_ENDING_NAME 1
 101 #define DOTDIR_NAME 2
 102
 103 /* Starting from protocol version 26, we always use 64-bit ino_t and dev_t
 104  * internally, even if this platform does not allow files to have 64-bit inums.
 105  * The only exception is if we're on a platform with no 64-bit type at all.
 106  *
 107  * Because we use read_longint() to get these off the wire, if you transfer
 108  * devices or (for protocols < 30) hardlinks with dev or inum > 2**32 to a
 109  * machine with no 64-bit types then you will get an overflow error.
 110  *
 111  * Note that if you transfer devices from a 64-bit-devt machine (say, Solaris)
 112  * to a 32-bit-devt machine (say, Linux-2.2/x86) then the device numbers will
 113  * be truncated.  But it's a kind of silly thing to do anyhow. */
 114
 115 /* The tmp_* vars are used as a cache area by make_file() to store data
 116  * that the sender doesn't need to remember in its file list.  The data
 117  * will survive just long enough to be used by send_file_entry(). */
 118 static dev_t tmp_rdev;
 119 #ifdef SUPPORT_HARD_LINKS
 120 static int64 tmp_dev, tmp_ino;
 121 #endif
 122 static char tmp_sum[MAX_DIGEST_LEN];
 123
 124 static char empty_sum[MAX_DIGEST_LEN];
 125 static int flist_count_offset; /* for --delete --progress */
 126 static int dir_count = 0;
 127
 128 static void flist_sort_and_clean(struct file_list *flist, int strip_root);
 129 static void output_flist(struct file_list *flist);
 130
 131 void init_flist(void)
 132 {
 133         if (DEBUG_GTE(FLIST, 4)) {
 134                 rprintf(FINFO, "FILE_STRUCT_LEN=%d, EXTRA_LEN=%d\n",
 135                         (int)FILE_STRUCT_LEN, (int)EXTRA_LEN);
 136         }
 137         checksum_len = protocol_version < 21 ? 2
 138                      : protocol_version < 30 ? MD4_DIGEST_LEN
 139                      : MD5_DIGEST_LEN;
 140 }
 141
 142 static int show_filelist_p(void)
 143 {
 144         return INFO_GTE(FLIST, 1) && xfer_dirs && !am_server && !inc_recurse;
 145 }
 146
 147 static void start_filelist_progress(char *kind)
 148 {
 149         rprintf(FCLIENT, "%s ... ", kind);
 150         output_needs_newline = 1;
 151         rflush(FINFO);
 152 }
 153
 154 static void emit_filelist_progress(int count)
 155 {
 156         rprintf(FCLIENT, " %d files...\r", count);
 157 }
 158
 159 static void maybe_emit_filelist_progress(int count)
 160 {
 161         if (INFO_GTE(FLIST, 2) && show_filelist_p() && (count % 100) == 0)
 162                 emit_filelist_progress(count);
 163 }
 164
 165 static void finish_filelist_progress(const struct file_list *flist)
 166 {
 167         if (INFO_GTE(FLIST, 2)) {
 168                 /* This overwrites the progress line */
 169                 rprintf(FINFO, "%d file%sto consider\n",
 170                         flist->used, flist->used == 1 ? " " : "s ");
 171         } else {
 172                 output_needs_newline = 0;
 173                 rprintf(FINFO, "done\n");
 174         }
 175 }
 176
 177 void show_flist_stats(void)
 178 {
 179         /* Nothing yet */
 180 }
 181
 182 /* Stat either a symlink or its referent, depending on the settings of
 183  * copy_links, copy_unsafe_links, etc.  Returns -1 on error, 0 on success.
 184  *
 185  * If path is the name of a symlink, then the linkbuf buffer (which must hold
 186  * MAXPATHLEN chars) will be set to the symlink's target string.
 187  *
 188  * The stat structure pointed to by stp will contain information about the
 189  * link or the referent as appropriate, if they exist. */
 190 static int readlink_stat(const char *path, STRUCT_STAT *stp, char *linkbuf)
 191 {
 192 #ifdef SUPPORT_LINKS
 193         if (link_stat(path, stp, copy_dirlinks) < 0)
 194                 return -1;
 195         if (S_ISLNK(stp->st_mode)) {
 196                 int llen = readlink(path, linkbuf, MAXPATHLEN - 1);
 197                 if (llen < 0)
 198                         return -1;
 199                 linkbuf[llen] = '\0';
 200                 if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
 201                         if (INFO_GTE(SYMSAFE, 1)) {
 202                                 rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
 203                                         path, linkbuf);
 204                         }
 205                         return x_stat(path, stp, NULL);
 206                 }
 207                 if (munge_symlinks && am_sender && llen > SYMLINK_PREFIX_LEN
 208                  && strncmp(linkbuf, SYMLINK_PREFIX, SYMLINK_PREFIX_LEN) == 0) {
 209                         memmove(linkbuf, linkbuf + SYMLINK_PREFIX_LEN,
 210                                 llen - SYMLINK_PREFIX_LEN + 1);
 211                 }
 212         }
 213         return 0;
 214 #else
 215         return x_stat(path, stp, NULL);
 216 #endif
 217 }
 218
 219 int link_stat(const char *path, STRUCT_STAT *stp, int follow_dirlinks)
 220 {
 221 #ifdef SUPPORT_LINKS
 222         if (copy_links)
 223                 return x_stat(path, stp, NULL);
 224         if (x_lstat(path, stp, NULL) < 0)
 225                 return -1;
 226         if (follow_dirlinks && S_ISLNK(stp->st_mode)) {
 227                 STRUCT_STAT st;
 228                 if (x_stat(path, &st, NULL) == 0 && S_ISDIR(st.st_mode))
 229                         *stp = st;
 230         }
 231         return 0;
 232 #else
 233         return x_stat(path, stp, NULL);
 234 #endif
 235 }
 236
 237 static inline int is_daemon_excluded(const char *fname, int is_dir)
 238 {
 239         if (daemon_filter_list.head
 240          && check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
 241                 errno = ENOENT;
 242                 return 1;
 243         }
 244         return 0;
 245 }
 246
 247 static inline int path_is_daemon_excluded(char *path, int ignore_filename)
 248 {
 249         if (daemon_filter_list.head) {
 250                 char *slash = path;
 251
 252                 while ((slash = strchr(slash+1, '/')) != NULL) {
 253                         int ret;
 254                         *slash = '\0';
 255                         ret = check_filter(&daemon_filter_list, FLOG, path, 1);
 256                         *slash = '/';
 257                         if (ret < 0) {
 258                                 errno = ENOENT;
 259                                 return 1;
 260                         }
 261                 }
 262
 263                 if (!ignore_filename
 264                  && check_filter(&daemon_filter_list, FLOG, path, 1) < 0) {
 265                         errno = ENOENT;
 266                         return 1;
 267                 }
 268         }
 269
 270         return 0;
 271 }
 272
 273 /* This function is used to check if a file should be included/excluded
 274  * from the list of files based on its name and type etc.  The value of
 275  * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
 276 static int is_excluded(const char *fname, int is_dir, int filter_level)
 277 {
 278 #if 0 /* This currently never happens, so avoid a useless compare. */
 279         if (filter_level == NO_FILTERS)
 280                 return 0;
 281 #endif
 282         if (is_daemon_excluded(fname, is_dir))
 283                 return 1;
 284         if (filter_level != ALL_FILTERS)
 285                 return 0;
 286         if (filter_list.head
 287             && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
 288                 return 1;
 289         return 0;
 290 }
 291
 292 static void send_directory(int f, struct file_list *flist,
 293                            char *fbuf, int len, int flags);
 294
 295 static const char *pathname, *orig_dir;
 296 static int pathname_len;
 297
 298 /* Make sure flist can hold at least flist->used + extra entries. */
 299 static void flist_expand(struct file_list *flist, int extra)
 300 {
 301         struct file_struct **new_ptr;
 302
 303         if (flist->used + extra <= flist->malloced)
 304                 return;
 305
 306         if (flist->malloced < FLIST_START)
 307                 flist->malloced = FLIST_START;
 308         else if (flist->malloced >= FLIST_LINEAR)
 309                 flist->malloced += FLIST_LINEAR;
 310         else
 311                 flist->malloced *= 2;
 312
 313         /* In case count jumped or we are starting the list
 314          * with a known size just set it. */
 315         if (flist->malloced < flist->used + extra)
 316                 flist->malloced = flist->used + extra;
 317
 318         new_ptr = realloc_array(flist->files, struct file_struct *,
 319                                 flist->malloced);
 320
 321         if (DEBUG_GTE(FLIST, 1) && flist->malloced != FLIST_START) {
 322                 rprintf(FCLIENT, "[%s] expand file_list pointer array to %s bytes, did%s move\n",
 323                     who_am_i(),
 324                     big_num(sizeof flist->files[0] * flist->malloced, 0),
 325                     (new_ptr == flist->files) ? " not" : "");
 326         }
 327
 328         flist->files = new_ptr;
 329
 330         if (!flist->files)
 331                 out_of_memory("flist_expand");
 332 }
 333
 334 static void flist_done_allocating(struct file_list *flist)
 335 {
 336         void *ptr = pool_boundary(flist->file_pool, 8*1024);
 337         if (flist->pool_boundary == ptr)
 338                 flist->pool_boundary = NULL; /* list didn't use any pool memory */
 339         else
 340                 flist->pool_boundary = ptr;
 341 }
 342
 343 /* Call this with EITHER (1) "file, NULL, 0" to chdir() to the file's
 344  * F_PATHNAME(), or (2) "NULL, dir, dirlen" to chdir() to the supplied dir,
 345  * with dir == NULL taken to be the starting directory, and dirlen < 0
 346  * indicating that strdup(dir) should be called and then the -dirlen length
 347  * value checked to ensure that it is not daemon-excluded. */
 348 int change_pathname(struct file_struct *file, const char *dir, int dirlen)
 349 {
 350         if (dirlen < 0) {
 351                 char *cpy = strdup(dir);
 352                 if (*cpy != '/')
 353                         change_dir(orig_dir, CD_SKIP_CHDIR);
 354                 if (path_is_daemon_excluded(cpy, 0))
 355                         goto chdir_error;
 356                 dir = cpy;
 357                 dirlen = -dirlen;
 358         } else {
 359                 if (file) {
 360                         if (pathname == F_PATHNAME(file))
 361                                 return 1;
 362                         dir = F_PATHNAME(file);
 363                         if (dir)
 364                                 dirlen = strlen(dir);
 365                 } else if (pathname == dir)
 366                         return 1;
 367                 if (dir && *dir != '/')
 368                         change_dir(orig_dir, CD_SKIP_CHDIR);
 369         }
 370
 371         pathname = dir;
 372         pathname_len = dirlen;
 373
 374         if (!dir)
 375                 dir = orig_dir;
 376
 377         if (!change_dir(dir, CD_NORMAL)) {
 378           chdir_error:
 379                 io_error |= IOERR_GENERAL;
 380                 rsyserr(FERROR_XFER, errno, "change_dir %s failed", full_fname(dir));
 381                 if (dir != orig_dir)
 382                         change_dir(orig_dir, CD_NORMAL);
 383                 pathname = NULL;
 384                 pathname_len = 0;
 385                 return 0;
 386         }
 387
 388         return 1;
 389 }
 390
 391 static void send_file_entry(int f, const char *fname, struct file_struct *file,
 392 #ifdef SUPPORT_LINKS
 393                             const char *symlink_name, int symlink_len,
 394 #endif
 395                             int ndx, int first_ndx)
 396 {
 397         static time_t modtime;
 398         static mode_t mode;
 399 #ifdef SUPPORT_HARD_LINKS
 400         static int64 dev;
 401 #endif
 402         static dev_t rdev;
 403         static uint32 rdev_major;
 404         static uid_t uid;
 405         static gid_t gid;
 406         static const char *user_name, *group_name;
 407         static char lastname[MAXPATHLEN];
 408 #ifdef SUPPORT_HARD_LINKS
 409         int first_hlink_ndx = -1;
 410 #endif
 411         int l1, l2;
 412         int xflags;
 413
 414         /* Initialize starting value of xflags. */
 415         if (protocol_version >= 30 && S_ISDIR(file->mode)) {
 416                 dir_count++;
 417                 if (file->flags & FLAG_CONTENT_DIR)
 418                         xflags = file->flags & FLAG_TOP_DIR;
 419                 else if (file->flags & FLAG_IMPLIED_DIR)
 420                         xflags = XMIT_TOP_DIR | XMIT_NO_CONTENT_DIR;
 421                 else
 422                         xflags = XMIT_NO_CONTENT_DIR;
 423         } else
 424                 xflags = file->flags & FLAG_TOP_DIR; /* FLAG_TOP_DIR == XMIT_TOP_DIR */
 425
 426         if (file->mode == mode)
 427                 xflags |= XMIT_SAME_MODE;
 428         else
 429                 mode = file->mode;
 430
 431         if ((preserve_devices && IS_DEVICE(mode))
 432          || (preserve_specials && IS_SPECIAL(mode))) {
 433                 if (protocol_version < 28) {
 434                         if (tmp_rdev == rdev)
 435                                 xflags |= XMIT_SAME_RDEV_pre28;
 436                         else
 437                                 rdev = tmp_rdev;
 438                 } else {
 439                         rdev = tmp_rdev;
 440                         if ((uint32)major(rdev) == rdev_major)
 441                                 xflags |= XMIT_SAME_RDEV_MAJOR;
 442                         else
 443                                 rdev_major = major(rdev);
 444                         if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu)
 445                                 xflags |= XMIT_RDEV_MINOR_8_pre30;
 446                 }
 447         } else if (protocol_version < 28)
 448                 rdev = MAKEDEV(0, 0);
 449         if (!preserve_uid || ((uid_t)F_OWNER(file) == uid && *lastname))
 450                 xflags |= XMIT_SAME_UID;
 451         else {
 452                 uid = F_OWNER(file);
 453                 if (!numeric_ids) {
 454                         user_name = add_uid(uid);
 455                         if (inc_recurse && user_name)
 456                                 xflags |= XMIT_USER_NAME_FOLLOWS;
 457                 }
 458         }
 459         if (!preserve_gid || ((gid_t)F_GROUP(file) == gid && *lastname))
 460                 xflags |= XMIT_SAME_GID;
 461         else {
 462                 gid = F_GROUP(file);
 463                 if (!numeric_ids) {
 464                         group_name = add_gid(gid);
 465                         if (inc_recurse && group_name)
 466                                 xflags |= XMIT_GROUP_NAME_FOLLOWS;
 467                 }
 468         }
 469         if (file->modtime == modtime)
 470                 xflags |= XMIT_SAME_TIME;
 471         else
 472                 modtime = file->modtime;
 473
 474 #ifdef SUPPORT_HARD_LINKS
 475         if (tmp_dev != 0) {
 476                 if (protocol_version >= 30) {
 477                         struct ht_int64_node *np = idev_find(tmp_dev, tmp_ino);
 478                         first_hlink_ndx = (int32)(long)np->data - 1;
 479                         if (first_hlink_ndx < 0) {
 480                                 np->data = (void*)(long)(first_ndx + ndx + 1);
 481                                 xflags |= XMIT_HLINK_FIRST;
 482                         }
 483                         if (DEBUG_GTE(HLINK, 1)) {
 484                                 if (first_hlink_ndx >= 0) {
 485                                         rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
 486                                                 who_am_i(), first_ndx + ndx, first_hlink_ndx,
 487                                                 first_hlink_ndx >= first_ndx ? "" : "un");
 488                                 } else if (DEBUG_GTE(HLINK, 3)) {
 489                                         rprintf(FINFO, "[%s] dev:inode for #%d is %s:%s\n",
 490                                                 who_am_i(), first_ndx + ndx,
 491                                                 big_num(tmp_dev, 0), big_num(tmp_ino, 0));
 492                                 }
 493                         }
 494                 } else {
 495                         if (tmp_dev == dev) {
 496                                 if (protocol_version >= 28)
 497                                         xflags |= XMIT_SAME_DEV_pre30;
 498                         } else
 499                                 dev = tmp_dev;
 500                 }
 501                 xflags |= XMIT_HLINKED;
 502         }
 503 #endif
 504
 505         for (l1 = 0;
 506             lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
 507             l1++) {}
 508         l2 = strlen(fname+l1);
 509
 510         if (l1 > 0)
 511                 xflags |= XMIT_SAME_NAME;
 512         if (l2 > 255)
 513                 xflags |= XMIT_LONG_NAME;
 514
 515         /* We must make sure we don't send a zero flag byte or the
 516          * other end will terminate the flist transfer.  Note that
 517          * the use of XMIT_TOP_DIR on a non-dir has no meaning, so
 518          * it's harmless way to add a bit to the first flag byte. */
 519         if (protocol_version >= 28) {
 520                 if (!xflags && !S_ISDIR(mode))
 521                         xflags |= XMIT_TOP_DIR;
 522                 if ((xflags & 0xFF00) || !xflags) {
 523                         xflags |= XMIT_EXTENDED_FLAGS;
 524                         write_shortint(f, xflags);
 525                 } else
 526                         write_byte(f, xflags);
 527         } else {
 528                 if (!(xflags & 0xFF))
 529                         xflags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
 530                 write_byte(f, xflags);
 531         }
 532         if (xflags & XMIT_SAME_NAME)
 533                 write_byte(f, l1);
 534         if (xflags & XMIT_LONG_NAME)
 535                 write_varint30(f, l2);
 536         else
 537                 write_byte(f, l2);
 538         write_buf(f, fname + l1, l2);
 539
 540 #ifdef SUPPORT_HARD_LINKS
 541         if (first_hlink_ndx >= 0) {
 542                 write_varint(f, first_hlink_ndx);
 543                 if (first_hlink_ndx >= first_ndx)
 544                         goto the_end;
 545         }
 546 #endif
 547
 548         write_varlong30(f, F_LENGTH(file), 3);
 549         if (!(xflags & XMIT_SAME_TIME)) {
 550                 if (protocol_version >= 30)
 551                         write_varlong(f, modtime, 4);
 552                 else
 553                         write_int(f, modtime);
 554         }
 555         if (!(xflags & XMIT_SAME_MODE))
 556                 write_int(f, to_wire_mode(mode));
 557         if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
 558                 if (protocol_version < 30)
 559                         write_int(f, uid);
 560                 else {
 561                         write_varint(f, uid);
 562                         if (xflags & XMIT_USER_NAME_FOLLOWS) {
 563                                 int len = strlen(user_name);
 564                                 write_byte(f, len);
 565                                 write_buf(f, user_name, len);
 566                         }
 567                 }
 568         }
 569         if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
 570                 if (protocol_version < 30)
 571                         write_int(f, gid);
 572                 else {
 573                         write_varint(f, gid);
 574                         if (xflags & XMIT_GROUP_NAME_FOLLOWS) {
 575                                 int len = strlen(group_name);
 576                                 write_byte(f, len);
 577                                 write_buf(f, group_name, len);
 578                         }
 579                 }
 580         }
 581         if ((preserve_devices && IS_DEVICE(mode))
 582          || (preserve_specials && IS_SPECIAL(mode))) {
 583                 if (protocol_version < 28) {
 584                         if (!(xflags & XMIT_SAME_RDEV_pre28))
 585                                 write_int(f, (int)rdev);
 586                 } else {
 587                         if (!(xflags & XMIT_SAME_RDEV_MAJOR))
 588                                 write_varint30(f, major(rdev));
 589                         if (protocol_version >= 30)
 590                                 write_varint(f, minor(rdev));
 591                         else if (xflags & XMIT_RDEV_MINOR_8_pre30)
 592                                 write_byte(f, minor(rdev));
 593                         else
 594                                 write_int(f, minor(rdev));
 595                 }
 596         }
 597
 598 #ifdef SUPPORT_LINKS
 599         if (symlink_len) {
 600                 write_varint30(f, symlink_len);
 601                 write_buf(f, symlink_name, symlink_len);
 602         }
 603 #endif
 604
 605 #ifdef SUPPORT_HARD_LINKS
 606         if (tmp_dev != 0 && protocol_version < 30) {
 607                 if (protocol_version < 26) {
 608                         /* 32-bit dev_t and ino_t */
 609                         write_int(f, (int32)dev);
 610                         write_int(f, (int32)tmp_ino);
 611                 } else {
 612                         /* 64-bit dev_t and ino_t */
 613                         if (!(xflags & XMIT_SAME_DEV_pre30))
 614                                 write_longint(f, dev);
 615                         write_longint(f, tmp_ino);
 616                 }
 617         }
 618 #endif
 619
 620         if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
 621                 const char *sum;
 622                 if (S_ISREG(mode))
 623                         sum = tmp_sum;
 624                 else {
 625                         /* Prior to 28, we sent a useless set of nulls. */
 626                         sum = empty_sum;
 627                 }
 628                 write_buf(f, sum, checksum_len);
 629         }
 630
 631 #ifdef SUPPORT_HARD_LINKS
 632   the_end:
 633 #endif
 634         strlcpy(lastname, fname, MAXPATHLEN);
 635
 636         if (S_ISREG(mode) || S_ISLNK(mode))
 637                 stats.total_size += F_LENGTH(file);
 638 }
 639
 640 static struct file_struct *recv_file_entry(struct file_list *flist,
 641                                            int xflags, int f)
 642 {
 643         static int64 modtime;
 644         static mode_t mode;
 645 #ifdef SUPPORT_HARD_LINKS
 646         static int64 dev;
 647 #endif
 648         static dev_t rdev;
 649         static uint32 rdev_major;
 650         static uid_t uid;
 651         static gid_t gid;
 652         static uint16 gid_flags;
 653         static char lastname[MAXPATHLEN], *lastdir;
 654         static int lastdir_depth, lastdir_len = -1;
 655         static unsigned int del_hier_name_len = 0;
 656         static int in_del_hier = 0;
 657         char thisname[MAXPATHLEN];
 658         unsigned int l1 = 0, l2 = 0;
 659         int alloc_len, basename_len, linkname_len;
 660         int extra_len = file_extra_cnt * EXTRA_LEN;
 661         int first_hlink_ndx = -1;
 662         int64 file_length;
 663         const char *basename;
 664         struct file_struct *file;
 665         alloc_pool_t *pool;
 666         char *bp;
 667
 668         if (xflags & XMIT_SAME_NAME)
 669                 l1 = read_byte(f);
 670
 671         if (xflags & XMIT_LONG_NAME)
 672                 l2 = read_varint30(f);
 673         else
 674                 l2 = read_byte(f);
 675
 676         if (l2 >= MAXPATHLEN - l1) {
 677                 rprintf(FERROR,
 678                         "overflow: xflags=0x%x l1=%d l2=%d lastname=%s [%s]\n",
 679                         xflags, l1, l2, lastname, who_am_i());
 680                 overflow_exit("recv_file_entry");
 681         }
 682
 683         strlcpy(thisname, lastname, l1 + 1);
 684         read_sbuf(f, &thisname[l1], l2);
 685         thisname[l1 + l2] = 0;
 686
 687         /* Abuse basename_len for a moment... */
 688         basename_len = strlcpy(lastname, thisname, MAXPATHLEN);
 689
 690 #ifdef ICONV_OPTION
 691         if (ic_recv != (iconv_t)-1) {
 692                 xbuf outbuf, inbuf;
 693
 694                 INIT_CONST_XBUF(outbuf, thisname);
 695                 INIT_XBUF(inbuf, lastname, basename_len, (size_t)-1);
 696
 697                 if (iconvbufs(ic_recv, &inbuf, &outbuf, 0) < 0) {
 698                         io_error |= IOERR_GENERAL;
 699                         rprintf(FERROR_UTF8,
 700                             "[%s] cannot convert filename: %s (%s)\n",
 701                             who_am_i(), lastname, strerror(errno));
 702                         outbuf.len = 0;
 703                 }
 704                 thisname[outbuf.len] = '\0';
 705         }
 706 #endif
 707
 708         if (*thisname)
 709                 clean_fname(thisname, 0);
 710
 711         if (sanitize_paths)
 712                 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
 713
 714         if ((basename = strrchr(thisname, '/')) != NULL) {
 715                 int len = basename++ - thisname;
 716                 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
 717                         lastdir = new_array(char, len + 1);
 718                         memcpy(lastdir, thisname, len);
 719                         lastdir[len] = '\0';
 720                         lastdir_len = len;
 721                         lastdir_depth = count_dir_elements(lastdir);
 722                 }
 723         } else
 724                 basename = thisname;
 725         basename_len = strlen(basename) + 1; /* count the '\0' */
 726
 727 #ifdef SUPPORT_HARD_LINKS
 728         if (protocol_version >= 30
 729          && BITS_SETnUNSET(xflags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
 730                 first_hlink_ndx = read_varint(f);
 731                 if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->ndx_start + flist->used) {
 732                         rprintf(FERROR,
 733                                 "hard-link reference out of range: %d (%d)\n",
 734                                 first_hlink_ndx, flist->ndx_start + flist->used);
 735                         exit_cleanup(RERR_PROTOCOL);
 736                 }
 737                 if (DEBUG_GTE(HLINK, 1)) {
 738                         rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
 739                                 who_am_i(), flist->used+flist->ndx_start, first_hlink_ndx,
 740                                 first_hlink_ndx >= flist->ndx_start ? "" : "un");
 741                 }
 742                 if (first_hlink_ndx >= flist->ndx_start) {
 743                         struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
 744                         file_length = F_LENGTH(first);
 745                         modtime = first->modtime;
 746                         mode = first->mode;
 747                         if (preserve_uid)
 748                                 uid = F_OWNER(first);
 749                         if (preserve_gid)
 750                                 gid = F_GROUP(first);
 751                         if ((preserve_devices && IS_DEVICE(mode))
 752                          || (preserve_specials && IS_SPECIAL(mode))) {
 753                                 uint32 *devp = F_RDEV_P(first);
 754                                 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
 755                                 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
 756                         }
 757                         if (preserve_links && S_ISLNK(mode))
 758                                 linkname_len = strlen(F_SYMLINK(first)) + 1;
 759                         else
 760                                 linkname_len = 0;
 761                         goto create_object;
 762                 }
 763         }
 764 #endif
 765
 766         file_length = read_varlong30(f, 3);
 767         if (!(xflags & XMIT_SAME_TIME)) {
 768                 if (protocol_version >= 30) {
 769                         modtime = read_varlong(f, 4);
 770 #if SIZEOF_TIME_T < SIZEOF_INT64
 771                         if (!am_generator && (int64)(time_t)modtime != modtime) {
 772                                 rprintf(FERROR_XFER,
 773                                     "Time value of %s truncated on receiver.\n",
 774                                     lastname);
 775                         }
 776 #endif
 777                 } else
 778                         modtime = read_int(f);
 779         }
 780         if (!(xflags & XMIT_SAME_MODE))
 781                 mode = from_wire_mode(read_int(f));
 782
 783         if (chmod_modes && !S_ISLNK(mode))
 784                 mode = tweak_mode(mode, chmod_modes);
 785
 786         if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
 787                 if (protocol_version < 30)
 788                         uid = (uid_t)read_int(f);
 789                 else {
 790                         uid = (uid_t)read_varint(f);
 791                         if (xflags & XMIT_USER_NAME_FOLLOWS)
 792                                 uid = recv_user_name(f, uid);
 793                         else if (inc_recurse && am_root && !numeric_ids)
 794                                 uid = match_uid(uid);
 795                 }
 796         }
 797         if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
 798                 if (protocol_version < 30)
 799                         gid = (gid_t)read_int(f);
 800                 else {
 801                         gid = (gid_t)read_varint(f);
 802                         gid_flags = 0;
 803                         if (xflags & XMIT_GROUP_NAME_FOLLOWS)
 804                                 gid = recv_group_name(f, gid, &gid_flags);
 805                         else if (inc_recurse && (!am_root || !numeric_ids))
 806                                 gid = match_gid(gid, &gid_flags);
 807                 }
 808         }
 809
 810         if ((preserve_devices && IS_DEVICE(mode))
 811          || (preserve_specials && IS_SPECIAL(mode))) {
 812                 if (protocol_version < 28) {
 813                         if (!(xflags & XMIT_SAME_RDEV_pre28))
 814                                 rdev = (dev_t)read_int(f);
 815                 } else {
 816                         uint32 rdev_minor;
 817                         if (!(xflags & XMIT_SAME_RDEV_MAJOR))
 818                                 rdev_major = read_varint30(f);
 819                         if (protocol_version >= 30)
 820                                 rdev_minor = read_varint(f);
 821                         else if (xflags & XMIT_RDEV_MINOR_8_pre30)
 822                                 rdev_minor = read_byte(f);
 823                         else
 824                                 rdev_minor = read_int(f);
 825                         rdev = MAKEDEV(rdev_major, rdev_minor);
 826                 }
 827                 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
 828                 file_length = 0;
 829         } else if (protocol_version < 28)
 830                 rdev = MAKEDEV(0, 0);
 831
 832 #ifdef SUPPORT_LINKS
 833         if (preserve_links && S_ISLNK(mode)) {
 834                 linkname_len = read_varint30(f) + 1; /* count the '\0' */
 835                 if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
 836                         rprintf(FERROR, "overflow: linkname_len=%d\n",
 837                                 linkname_len - 1);
 838                         overflow_exit("recv_file_entry");
 839                 }
 840 #ifdef ICONV_OPTION
 841                 /* We don't know how much extra room we need to convert
 842                  * the as-yet-unread symlink data, so let's hope that a
 843                  * double-size buffer is plenty. */
 844                 if (sender_symlink_iconv)
 845                         linkname_len *= 2;
 846 #endif
 847                 if (munge_symlinks)
 848                         linkname_len += SYMLINK_PREFIX_LEN;
 849         }
 850         else
 851 #endif
 852                 linkname_len = 0;
 853
 854 #ifdef SUPPORT_HARD_LINKS
 855   create_object:
 856         if (preserve_hard_links) {
 857                 if (protocol_version < 28 && S_ISREG(mode))
 858                         xflags |= XMIT_HLINKED;
 859                 if (xflags & XMIT_HLINKED)
 860                         extra_len += (inc_recurse+1) * EXTRA_LEN;
 861         }
 862 #endif
 863
 864 #ifdef SUPPORT_ACLS
 865         /* Directories need an extra int32 for the default ACL. */
 866         if (preserve_acls && S_ISDIR(mode))
 867                 extra_len += EXTRA_LEN;
 868 #endif
 869
 870         if (always_checksum && S_ISREG(mode))
 871                 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
 872
 873 #if SIZEOF_INT64 >= 8
 874         if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
 875                 extra_len += EXTRA_LEN;
 876 #endif
 877         if (file_length < 0) {
 878                 rprintf(FERROR, "Offset underflow: file-length is negative\n");
 879                 exit_cleanup(RERR_UNSUPPORTED);
 880         }
 881
 882         if (inc_recurse && S_ISDIR(mode)) {
 883                 if (one_file_system) {
 884                         /* Room to save the dir's device for -x */
 885                         extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
 886                 }
 887                 pool = dir_flist->file_pool;
 888         } else
 889                 pool = flist->file_pool;
 890
 891 #if EXTRA_ROUNDING > 0
 892         if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
 893                 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
 894 #endif
 895
 896         alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
 897                   + linkname_len;
 898         bp = pool_alloc(pool, alloc_len, "recv_file_entry");
 899
 900         memset(bp, 0, extra_len + FILE_STRUCT_LEN);
 901         bp += extra_len;
 902         file = (struct file_struct *)bp;
 903         bp += FILE_STRUCT_LEN;
 904
 905         memcpy(bp, basename, basename_len);
 906
 907 #ifdef SUPPORT_HARD_LINKS
 908         if (xflags & XMIT_HLINKED)
 909                 file->flags |= FLAG_HLINKED;
 910 #endif
 911         file->modtime = (time_t)modtime;
 912         file->len32 = (uint32)file_length;
 913 #if SIZEOF_INT64 >= 8
 914         if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
 915 #if SIZEOF_CAPITAL_OFF_T < 8
 916                 rprintf(FERROR, "Offset overflow: attempted 64-bit file-length\n");
 917                 exit_cleanup(RERR_UNSUPPORTED);
 918 #else
 919                 file->flags |= FLAG_LENGTH64;
 920                 OPT_EXTRA(file, 0)->unum = (uint32)(file_length >> 32);
 921 #endif
 922         }
 923 #endif
 924         file->mode = mode;
 925         if (preserve_uid)
 926                 F_OWNER(file) = uid;
 927         if (preserve_gid) {
 928                 F_GROUP(file) = gid;
 929                 file->flags |= gid_flags;
 930         }
 931         if (unsort_ndx)
 932                 F_NDX(file) = flist->used + flist->ndx_start;
 933
 934         if (basename != thisname) {
 935                 file->dirname = lastdir;
 936                 F_DEPTH(file) = lastdir_depth + 1;
 937         } else
 938                 F_DEPTH(file) = 1;
 939
 940         if (S_ISDIR(mode)) {
 941                 if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
 942                         F_DEPTH(file)--;
 943                 if (protocol_version >= 30) {
 944                         if (!(xflags & XMIT_NO_CONTENT_DIR)) {
 945                                 if (xflags & XMIT_TOP_DIR)
 946                                         file->flags |= FLAG_TOP_DIR;
 947                                 file->flags |= FLAG_CONTENT_DIR;
 948                         } else if (xflags & XMIT_TOP_DIR)
 949                                 file->flags |= FLAG_IMPLIED_DIR;
 950                 } else if (xflags & XMIT_TOP_DIR) {
 951                         in_del_hier = recurse;
 952                         del_hier_name_len = F_DEPTH(file) == 0 ? 0 : l1 + l2;
 953                         if (relative_paths && del_hier_name_len > 2
 954                             && lastname[del_hier_name_len-1] == '.'
 955                             && lastname[del_hier_name_len-2] == '/')
 956                                 del_hier_name_len -= 2;
 957                         file->flags |= FLAG_TOP_DIR | FLAG_CONTENT_DIR;
 958                 } else if (in_del_hier) {
 959                         if (!relative_paths || !del_hier_name_len
 960                          || (l1 >= del_hier_name_len
 961                           && lastname[del_hier_name_len] == '/'))
 962                                 file->flags |= FLAG_CONTENT_DIR;
 963                         else
 964                                 in_del_hier = 0;
 965                 }
 966         }
 967
 968         if ((preserve_devices && IS_DEVICE(mode))
 969          || (preserve_specials && IS_SPECIAL(mode))) {
 970                 uint32 *devp = F_RDEV_P(file);
 971                 DEV_MAJOR(devp) = major(rdev);
 972                 DEV_MINOR(devp) = minor(rdev);
 973         }
 974
 975 #ifdef SUPPORT_LINKS
 976         if (linkname_len) {
 977                 bp += basename_len;
 978                 if (first_hlink_ndx >= flist->ndx_start) {
 979                         struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
 980                         memcpy(bp, F_SYMLINK(first), linkname_len);
 981                 } else {
 982                         if (munge_symlinks) {
 983                                 strlcpy(bp, SYMLINK_PREFIX, linkname_len);
 984                                 bp += SYMLINK_PREFIX_LEN;
 985                                 linkname_len -= SYMLINK_PREFIX_LEN;
 986                         }
 987 #ifdef ICONV_OPTION
 988                         if (sender_symlink_iconv) {
 989                                 xbuf outbuf, inbuf;
 990
 991                                 alloc_len = linkname_len;
 992                                 linkname_len /= 2;
 993
 994                                 /* Read the symlink data into the end of our double-sized
 995                                  * buffer and then convert it into the right spot. */
 996                                 INIT_XBUF(inbuf, bp + alloc_len - linkname_len,
 997                                           linkname_len - 1, (size_t)-1);
 998                                 read_sbuf(f, inbuf.buf, inbuf.len);
 999                                 INIT_XBUF(outbuf, bp, 0, alloc_len);
1000
1001                                 if (iconvbufs(ic_recv, &inbuf, &outbuf, 0) < 0) {
1002                                         io_error |= IOERR_GENERAL;
1003                                         rprintf(FERROR_XFER,
1004                                             "[%s] cannot convert symlink data for: %s (%s)\n",
1005                                             who_am_i(), full_fname(thisname), strerror(errno));
1006                                         bp = (char*)file->basename;
1007                                         *bp++ = '\0';
1008                                         outbuf.len = 0;
1009                                 }
1010                                 bp[outbuf.len] = '\0';
1011                         } else
1012 #endif
1013                                 read_sbuf(f, bp, linkname_len - 1);
1014                         if (sanitize_paths && !munge_symlinks && *bp)
1015                                 sanitize_path(bp, bp, "", lastdir_depth, SP_DEFAULT);
1016                 }
1017         }
1018 #endif
1019
1020 #ifdef SUPPORT_HARD_LINKS
1021         if (preserve_hard_links && xflags & XMIT_HLINKED) {
1022                 if (protocol_version >= 30) {
1023                         if (xflags & XMIT_HLINK_FIRST) {
1024                                 F_HL_GNUM(file) = flist->ndx_start + flist->used;
1025                         } else
1026                                 F_HL_GNUM(file) = first_hlink_ndx;
1027                 } else {
1028                         static int32 cnt = 0;
1029                         struct ht_int64_node *np;
1030                         int64 ino;
1031                         int32 ndx;
1032                         if (protocol_version < 26) {
1033                                 dev = read_int(f);
1034                                 ino = read_int(f);
1035                         } else {
1036                                 if (!(xflags & XMIT_SAME_DEV_pre30))
1037                                         dev = read_longint(f);
1038                                 ino = read_longint(f);
1039                         }
1040                         np = idev_find(dev, ino);
1041                         ndx = (int32)(long)np->data - 1;
1042                         if (ndx < 0) {
1043                                 ndx = cnt++;
1044                                 np->data = (void*)(long)cnt;
1045                         }
1046                         F_HL_GNUM(file) = ndx;
1047                 }
1048         }
1049 #endif
1050
1051         if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
1052                 if (S_ISREG(mode))
1053                         bp = F_SUM(file);
1054                 else {
1055                         /* Prior to 28, we get a useless set of nulls. */
1056                         bp = tmp_sum;
1057                 }
1058                 if (first_hlink_ndx >= flist->ndx_start) {
1059                         struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1060                         memcpy(bp, F_SUM(first), checksum_len);
1061                 } else
1062                         read_buf(f, bp, checksum_len);
1063         }
1064
1065 #ifdef SUPPORT_ACLS
1066         if (preserve_acls && !S_ISLNK(mode))
1067                 receive_acl(file, f);
1068 #endif
1069 #ifdef SUPPORT_XATTRS
1070         if (preserve_xattrs)
1071                 receive_xattr(file, f );
1072 #endif
1073
1074         if (S_ISREG(mode) || S_ISLNK(mode))
1075                 stats.total_size += file_length;
1076
1077         return file;
1078 }
1079
1080 /* Create a file_struct for a named file by reading its stat() information
1081  * and performing extensive checks against global options.
1082  *
1083  * Returns a pointer to the new file struct, or NULL if there was an error
1084  * or this file should be excluded.
1085  *
1086  * Note: Any error (here or in send_file_name) that results in the omission of
1087  * an existent source file from the file list should set
1088  * "io_error |= IOERR_GENERAL" to avoid deletion of the file from the
1089  * destination if --delete is on. */
1090 struct file_struct *make_file(const char *fname, struct file_list *flist,
1091                               STRUCT_STAT *stp, int flags, int filter_level)
1092 {
1093         static char *lastdir;
1094         static int lastdir_len = -1;
1095         struct file_struct *file;
1096         char thisname[MAXPATHLEN];
1097         char linkname[MAXPATHLEN];
1098         int alloc_len, basename_len, linkname_len;
1099         int extra_len = file_extra_cnt * EXTRA_LEN;
1100         const char *basename;
1101         alloc_pool_t *pool;
1102         STRUCT_STAT st;
1103         char *bp;
1104
1105         if (strlcpy(thisname, fname, sizeof thisname) >= sizeof thisname) {
1106                 io_error |= IOERR_GENERAL;
1107                 rprintf(FERROR_XFER, "skipping overly long name: %s\n", fname);
1108                 return NULL;
1109         }
1110         clean_fname(thisname, 0);
1111         if (sanitize_paths)
1112                 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
1113
1114         if (stp && S_ISDIR(stp->st_mode)) {
1115                 st = *stp; /* Needed for "symlink/." with --relative. */
1116                 *linkname = '\0'; /* make IBM code checker happy */
1117         } else if (readlink_stat(thisname, &st, linkname) != 0) {
1118                 int save_errno = errno;
1119                 /* See if file is excluded before reporting an error. */
1120                 if (filter_level != NO_FILTERS
1121                  && (is_excluded(thisname, 0, filter_level)
1122                   || is_excluded(thisname, 1, filter_level))) {
1123                         if (ignore_perishable && save_errno != ENOENT)
1124                                 non_perishable_cnt++;
1125                         return NULL;
1126                 }
1127                 if (save_errno == ENOENT) {
1128 #ifdef SUPPORT_LINKS
1129                         /* When our options tell us to follow a symlink that
1130                          * points nowhere, tell the user about the symlink
1131                          * instead of giving a "vanished" message.  We only
1132                          * dereference a symlink if one of the --copy*links
1133                          * options was specified, so there's no need for the
1134                          * extra lstat() if one of these options isn't on. */
1135                         if ((copy_links || copy_unsafe_links || copy_dirlinks)
1136                          && x_lstat(thisname, &st, NULL) == 0
1137                          && S_ISLNK(st.st_mode)) {
1138                                 io_error |= IOERR_GENERAL;
1139                                 rprintf(FERROR_XFER, "symlink has no referent: %s\n",
1140                                         full_fname(thisname));
1141                         } else
1142 #endif
1143                         {
1144                                 enum logcode c = am_daemon && protocol_version < 28
1145                                                ? FERROR : FWARNING;
1146                                 io_error |= IOERR_VANISHED;
1147                                 rprintf(c, "file has vanished: %s\n",
1148                                         full_fname(thisname));
1149                         }
1150                 } else {
1151                         io_error |= IOERR_GENERAL;
1152                         rsyserr(FERROR_XFER, save_errno, "readlink_stat(%s) failed",
1153                                 full_fname(thisname));
1154                 }
1155                 return NULL;
1156         }
1157
1158         if (filter_level == NO_FILTERS)
1159                 goto skip_filters;
1160
1161         if (S_ISDIR(st.st_mode)) {
1162                 if (!xfer_dirs) {
1163                         rprintf(FINFO, "skipping directory %s\n", thisname);
1164                         return NULL;
1165                 }
1166                 /* -x only affects dirs because we need to avoid recursing
1167                  * into a mount-point directory, not to avoid copying a
1168                  * symlinked file if -L (or similar) was specified. */
1169                 if (one_file_system && st.st_dev != filesystem_dev
1170                  && BITS_SETnUNSET(flags, FLAG_CONTENT_DIR, FLAG_TOP_DIR)) {
1171                         if (one_file_system > 1) {
1172                                 if (INFO_GTE(MOUNT, 1)) {
1173                                         rprintf(FINFO,
1174                                             "[%s] skipping mount-point dir %s\n",
1175                                             who_am_i(), thisname);
1176                                 }
1177                                 return NULL;
1178                         }
1179                         flags |= FLAG_MOUNT_DIR;
1180                         flags &= ~FLAG_CONTENT_DIR;
1181                 }
1182         } else
1183                 flags &= ~FLAG_CONTENT_DIR;
1184
1185         if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
1186                 if (ignore_perishable)
1187                         non_perishable_cnt++;
1188                 return NULL;
1189         }
1190
1191         if (lp_ignore_nonreadable(module_id)) {
1192 #ifdef SUPPORT_LINKS
1193                 if (!S_ISLNK(st.st_mode))
1194 #endif
1195                         if (access(thisname, R_OK) != 0)
1196                                 return NULL;
1197         }
1198
1199   skip_filters:
1200
1201         /* Only divert a directory in the main transfer. */
1202         if (flist) {
1203                 if (flist->prev && S_ISDIR(st.st_mode)
1204                  && flags & FLAG_DIVERT_DIRS) {
1205                         /* Room for parent/sibling/next-child info. */
1206                         extra_len += DIRNODE_EXTRA_CNT * EXTRA_LEN;
1207                         if (relative_paths)
1208                                 extra_len += PTR_EXTRA_CNT * EXTRA_LEN;
1209                         pool = dir_flist->file_pool;
1210                 } else
1211                         pool = flist->file_pool;
1212         } else {
1213 #ifdef SUPPORT_ACLS
1214                 /* Directories need an extra int32 for the default ACL. */
1215                 if (preserve_acls && S_ISDIR(st.st_mode))
1216                         extra_len += EXTRA_LEN;
1217 #endif
1218                 pool = NULL;
1219         }
1220
1221         if (DEBUG_GTE(FLIST, 2)) {
1222                 rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
1223                         who_am_i(), thisname, filter_level);
1224         }
1225
1226         if ((basename = strrchr(thisname, '/')) != NULL) {
1227                 int len = basename++ - thisname;
1228                 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
1229                         lastdir = new_array(char, len + 1);
1230                         memcpy(lastdir, thisname, len);
1231                         lastdir[len] = '\0';
1232                         lastdir_len = len;
1233                 }
1234         } else
1235                 basename = thisname;
1236         basename_len = strlen(basename) + 1; /* count the '\0' */
1237
1238 #ifdef SUPPORT_LINKS
1239         linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
1240 #else
1241         linkname_len = 0;
1242 #endif
1243
1244 #if SIZEOF_CAPITAL_OFF_T >= 8
1245         if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
1246                 extra_len += EXTRA_LEN;
1247 #endif
1248
1249         if (always_checksum && am_sender && S_ISREG(st.st_mode)) {
1250                 file_checksum(thisname, tmp_sum, st.st_size);
1251                 if (sender_keeps_checksum)
1252                         extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
1253         }
1254
1255 #if EXTRA_ROUNDING > 0
1256         if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
1257                 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
1258 #endif
1259
1260         alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
1261                   + linkname_len;
1262         if (pool)
1263                 bp = pool_alloc(pool, alloc_len, "make_file");
1264         else {
1265                 if (!(bp = new_array(char, alloc_len)))
1266                         out_of_memory("make_file");
1267         }
1268
1269         memset(bp, 0, extra_len + FILE_STRUCT_LEN);
1270         bp += extra_len;
1271         file = (struct file_struct *)bp;
1272         bp += FILE_STRUCT_LEN;
1273
1274         memcpy(bp, basename, basename_len);
1275
1276 #ifdef SUPPORT_HARD_LINKS
1277         if (preserve_hard_links && flist && flist->prev) {
1278                 if (protocol_version >= 28
1279                  ? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
1280                  : S_ISREG(st.st_mode)) {
1281                         tmp_dev = (int64)st.st_dev + 1;
1282                         tmp_ino = (int64)st.st_ino;
1283                 } else
1284                         tmp_dev = 0;
1285         }
1286 #endif
1287
1288 #ifdef HAVE_STRUCT_STAT_ST_RDEV
1289         if (IS_DEVICE(st.st_mode) || IS_SPECIAL(st.st_mode)) {
1290                 tmp_rdev = st.st_rdev;
1291                 st.st_size = 0;
1292         }
1293 #endif
1294
1295         file->flags = flags;
1296         file->modtime = st.st_mtime;
1297         file->len32 = (uint32)st.st_size;
1298 #if SIZEOF_CAPITAL_OFF_T >= 8
1299         if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
1300                 file->flags |= FLAG_LENGTH64;
1301                 OPT_EXTRA(file, 0)->unum = (uint32)(st.st_size >> 32);
1302         }
1303 #endif
1304         file->mode = st.st_mode;
1305         if (uid_ndx) /* Check uid_ndx instead of preserve_uid for del support */
1306                 F_OWNER(file) = st.st_uid;
1307         if (gid_ndx) /* Check gid_ndx instead of preserve_gid for del support */
1308                 F_GROUP(file) = st.st_gid;
1309
1310         if (basename != thisname)
1311                 file->dirname = lastdir;
1312
1313 #ifdef SUPPORT_LINKS
1314         if (linkname_len)
1315                 memcpy(bp + basename_len, linkname, linkname_len);
1316 #endif
1317
1318         if (am_sender)
1319                 F_PATHNAME(file) = pathname;
1320         else if (!pool)
1321                 F_DEPTH(file) = extra_len / EXTRA_LEN;
1322
1323         /* This code is only used by the receiver when it is building
1324          * a list of files for a delete pass. */
1325         if (keep_dirlinks && linkname_len && flist) {
1326                 STRUCT_STAT st2;
1327                 int save_mode = file->mode;
1328                 file->mode = S_IFDIR; /* Find a directory with our name. */
1329                 if (flist_find(dir_flist, file) >= 0
1330                  && x_stat(thisname, &st2, NULL) == 0 && S_ISDIR(st2.st_mode)) {
1331                         file->modtime = st2.st_mtime;
1332                         file->len32 = 0;
1333                         file->mode = st2.st_mode;
1334                         if (uid_ndx)
1335                                 F_OWNER(file) = st2.st_uid;
1336                         if (gid_ndx)
1337                                 F_GROUP(file) = st2.st_gid;
1338                 } else
1339                         file->mode = save_mode;
1340         }
1341
1342         if (basename_len == 0+1) {
1343                 if (!pool)
1344                         unmake_file(file);
1345                 return NULL;
1346         }
1347
1348         if (sender_keeps_checksum && S_ISREG(st.st_mode))
1349                 memcpy(F_SUM(file), tmp_sum, checksum_len);
1350
1351         if (unsort_ndx)
1352                 F_NDX(file) = dir_count;
1353
1354         return file;
1355 }
1356
1357 /* Only called for temporary file_struct entries created by make_file(). */
1358 void unmake_file(struct file_struct *file)
1359 {
1360         free(REQ_EXTRA(file, F_DEPTH(file)));
1361 }
1362
1363 static struct file_struct *send_file_name(int f, struct file_list *flist,
1364                                           const char *fname, STRUCT_STAT *stp,
1365                                           int flags, int filter_level)
1366 {
1367         struct file_struct *file;
1368
1369         file = make_file(fname, flist, stp, flags, filter_level);
1370         if (!file)
1371                 return NULL;
1372
1373         if (chmod_modes && !S_ISLNK(file->mode))
1374                 file->mode = tweak_mode(file->mode, chmod_modes);
1375
1376         if (f >= 0) {
1377                 char fbuf[MAXPATHLEN];
1378 #ifdef SUPPORT_LINKS
1379                 const char *symlink_name;
1380                 int symlink_len;
1381 #ifdef ICONV_OPTION
1382                 char symlink_buf[MAXPATHLEN];
1383 #endif
1384 #endif
1385 #if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
1386                 stat_x sx;
1387 #endif
1388
1389 #ifdef SUPPORT_LINKS
1390                 if (preserve_links && S_ISLNK(file->mode)) {
1391                         symlink_name = F_SYMLINK(file);
1392                         symlink_len = strlen(symlink_name);
1393                 } else {
1394                         symlink_name = NULL;
1395                         symlink_len = 0;
1396                 }
1397 #endif
1398
1399 #ifdef ICONV_OPTION
1400                 if (ic_send != (iconv_t)-1) {
1401                         xbuf outbuf, inbuf;
1402
1403                         INIT_CONST_XBUF(outbuf, fbuf);
1404
1405                         if (file->dirname) {
1406                                 INIT_XBUF_STRLEN(inbuf, (char*)file->dirname);
1407                                 outbuf.size -= 2; /* Reserve room for '/' & 1 more char. */
1408                                 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0)
1409                                         goto convert_error;
1410                                 outbuf.size += 2;
1411                                 fbuf[outbuf.len++] = '/';
1412                         }
1413
1414                         INIT_XBUF_STRLEN(inbuf, (char*)file->basename);
1415                         if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0) {
1416                           convert_error:
1417                                 io_error |= IOERR_GENERAL;
1418                                 rprintf(FERROR_XFER,
1419                                     "[%s] cannot convert filename: %s (%s)\n",
1420                                     who_am_i(), f_name(file, fbuf), strerror(errno));
1421                                 return NULL;
1422                         }
1423                         fbuf[outbuf.len] = '\0';
1424
1425 #ifdef SUPPORT_LINKS
1426                         if (symlink_len && sender_symlink_iconv) {
1427                                 INIT_XBUF(inbuf, (char*)symlink_name, symlink_len, (size_t)-1);
1428                                 INIT_CONST_XBUF(outbuf, symlink_buf);
1429                                 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0) {
1430                                         io_error |= IOERR_GENERAL;
1431                                         f_name(file, fbuf);
1432                                         rprintf(FERROR_XFER,
1433                                             "[%s] cannot convert symlink data for: %s (%s)\n",
1434                                             who_am_i(), full_fname(fbuf), strerror(errno));
1435                                         return NULL;
1436                                 }
1437                                 symlink_buf[outbuf.len] = '\0';
1438
1439                                 symlink_name = symlink_buf;
1440                                 symlink_len = outbuf.len;
1441                         }
1442 #endif
1443                 } else
1444 #endif
1445                         f_name(file, fbuf);
1446
1447 #ifdef SUPPORT_ACLS
1448                 if (preserve_acls && !S_ISLNK(file->mode)) {
1449                         sx.st.st_mode = file->mode;
1450                         sx.acc_acl = sx.def_acl = NULL;
1451                         if (get_acl(fname, &sx) < 0) {
1452                                 io_error |= IOERR_GENERAL;
1453                                 return NULL;
1454                         }
1455                 }
1456 #endif
1457 #ifdef SUPPORT_XATTRS
1458                 if (preserve_xattrs) {
1459                         sx.xattr = NULL;
1460                         if (get_xattr(fname, &sx) < 0) {
1461                                 io_error |= IOERR_GENERAL;
1462                                 return NULL;
1463                         }
1464                 }
1465 #endif
1466
1467                 send_file_entry(f, fbuf, file,
1468 #ifdef SUPPORT_LINKS
1469                                 symlink_name, symlink_len,
1470 #endif
1471                                 flist->used, flist->ndx_start);
1472
1473 #ifdef SUPPORT_ACLS
1474                 if (preserve_acls && !S_ISLNK(file->mode)) {
1475                         send_acl(&sx, f);
1476                         free_acl(&sx);
1477                 }
1478 #endif
1479 #ifdef SUPPORT_XATTRS
1480                 if (preserve_xattrs) {
1481                         F_XATTR(file) = send_xattr(&sx, f);
1482                         free_xattr(&sx);
1483                 }
1484 #endif
1485         }
1486
1487         maybe_emit_filelist_progress(flist->used + flist_count_offset);
1488
1489         flist_expand(flist, 1);
1490         flist->files[flist->used++] = file;
1491
1492         return file;
1493 }
1494
1495 static void send_if_directory(int f, struct file_list *flist,
1496                               struct file_struct *file,
1497                               char *fbuf, unsigned int ol,
1498                               int flags)
1499 {
1500         char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
1501
1502         if (S_ISDIR(file->mode)
1503             && !(file->flags & FLAG_MOUNT_DIR) && f_name(file, fbuf)) {
1504                 void *save_filters;
1505                 unsigned int len = strlen(fbuf);
1506                 if (len > 1 && fbuf[len-1] == '/')
1507                         fbuf[--len] = '\0';
1508                 if (len >= MAXPATHLEN - 1) {
1509                         io_error |= IOERR_GENERAL;
1510                         rprintf(FERROR_XFER, "skipping long-named directory: %s\n",
1511                                 full_fname(fbuf));
1512                         return;
1513                 }
1514                 save_filters = push_local_filters(fbuf, len);
1515                 send_directory(f, flist, fbuf, len, flags);
1516                 pop_local_filters(save_filters);
1517                 fbuf[ol] = '\0';
1518                 if (is_dot_dir)
1519                         fbuf[ol-1] = '.';
1520         }
1521 }
1522
1523 static int file_compare(const void *file1, const void *file2)
1524 {
1525         return f_name_cmp(*(struct file_struct **)file1,
1526                           *(struct file_struct **)file2);
1527 }
1528
1529 /* The guts of a merge-sort algorithm.  This was derived from the glibc
1530  * version, but I (Wayne) changed the merge code to do less copying and
1531  * to require only half the amount of temporary memory. */
1532 static void fsort_tmp(struct file_struct **fp, size_t num,
1533                       struct file_struct **tmp)
1534 {
1535         struct file_struct **f1, **f2, **t;
1536         size_t n1, n2;
1537
1538         n1 = num / 2;
1539         n2 = num - n1;
1540         f1 = fp;
1541         f2 = fp + n1;
1542
1543         if (n1 > 1)
1544                 fsort_tmp(f1, n1, tmp);
1545         if (n2 > 1)
1546                 fsort_tmp(f2, n2, tmp);
1547
1548         while (f_name_cmp(*f1, *f2) <= 0) {
1549                 if (!--n1)
1550                         return;
1551                 f1++;
1552         }
1553
1554         t = tmp;
1555         memcpy(t, f1, n1 * PTR_SIZE);
1556
1557         *f1++ = *f2++, n2--;
1558
1559         while (n1 > 0 && n2 > 0) {
1560                 if (f_name_cmp(*t, *f2) <= 0)
1561                         *f1++ = *t++, n1--;
1562                 else
1563                         *f1++ = *f2++, n2--;
1564         }
1565
1566         if (n1 > 0)
1567                 memcpy(f1, t, n1 * PTR_SIZE);
1568 }
1569
1570 /* This file-struct sorting routine makes sure that any identical names in
1571  * the file list stay in the same order as they were in the original list.
1572  * This is particularly vital in inc_recurse mode where we expect a sort
1573  * on the flist to match the exact order of a sort on the dir_flist. */
1574 static void fsort(struct file_struct **fp, size_t num)
1575 {
1576         if (num <= 1)
1577                 return;
1578
1579         if (use_qsort)
1580                 qsort(fp, num, PTR_SIZE, file_compare);
1581         else {
1582                 struct file_struct **tmp = new_array(struct file_struct *,
1583                                                      (num+1) / 2);
1584                 fsort_tmp(fp, num, tmp);
1585                 free(tmp);
1586         }
1587 }
1588
1589 /* We take an entire set of sibling dirs from the sorted flist and link them
1590  * into the tree, setting the appropriate parent/child/sibling pointers. */
1591 static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist,
1592                              int dir_cnt)
1593 {
1594         int i;
1595         int32 *dp = NULL;
1596         int32 *parent_dp = parent_ndx < 0 ? NULL
1597                          : F_DIR_NODE_P(dir_flist->sorted[parent_ndx]);
1598
1599         flist_expand(dir_flist, dir_cnt);
1600         dir_flist->sorted = dir_flist->files;
1601
1602         for (i = 0; dir_cnt; i++) {
1603                 struct file_struct *file = from_flist->sorted[i];
1604
1605                 if (!S_ISDIR(file->mode))
1606                         continue;
1607
1608                 dir_flist->files[dir_flist->used++] = file;
1609                 dir_cnt--;
1610
1611                 if (file->basename[0] == '.' && file->basename[1] == '\0')
1612                         continue;
1613
1614                 if (dp)
1615                         DIR_NEXT_SIBLING(dp) = dir_flist->used - 1;
1616                 else if (parent_dp)
1617                         DIR_FIRST_CHILD(parent_dp) = dir_flist->used - 1;
1618                 else
1619                         send_dir_ndx = dir_flist->used - 1;
1620
1621                 dp = F_DIR_NODE_P(file);
1622                 DIR_PARENT(dp) = parent_ndx;
1623                 DIR_FIRST_CHILD(dp) = -1;
1624         }
1625         if (dp)
1626                 DIR_NEXT_SIBLING(dp) = -1;
1627 }
1628
1629 /* This function is normally called by the sender, but the receiving side also
1630  * calls it from get_dirlist() with f set to -1 so that we just construct the
1631  * file list in memory without sending it over the wire.  Also, get_dirlist()
1632  * might call this with f set to -2, which also indicates that local filter
1633  * rules should be ignored. */
1634 static void send_directory(int f, struct file_list *flist, char *fbuf, int len,
1635                            int flags)
1636 {
1637         struct dirent *di;
1638         unsigned remainder;
1639         char *p;
1640         DIR *d;
1641         int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
1642         int start = flist->used;
1643         int filter_level = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
1644
1645         assert(flist != NULL);
1646
1647         if (!(d = opendir(fbuf))) {
1648                 io_error |= IOERR_GENERAL;
1649                 rsyserr(FERROR_XFER, errno, "opendir %s failed", full_fname(fbuf));
1650                 return;
1651         }
1652
1653         p = fbuf + len;
1654         if (len != 1 || *fbuf != '/')
1655                 *p++ = '/';
1656         *p = '\0';
1657         remainder = MAXPATHLEN - (p - fbuf);
1658
1659         for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1660                 char *dname = d_name(di);
1661                 if (dname[0] == '.' && (dname[1] == '\0'
1662                     || (dname[1] == '.' && dname[2] == '\0')))
1663                         continue;
1664                 if (strlcpy(p, dname, remainder) >= remainder) {
1665                         io_error |= IOERR_GENERAL;
1666                         rprintf(FERROR_XFER,
1667                                 "cannot send long-named file %s\n",
1668                                 full_fname(fbuf));
1669                         continue;
1670                 }
1671                 if (dname[0] == '\0') {
1672                         io_error |= IOERR_GENERAL;
1673                         rprintf(FERROR_XFER,
1674                                 "cannot send file with empty name in %s\n",
1675                                 full_fname(fbuf));
1676                         continue;
1677                 }
1678
1679                 send_file_name(f, flist, fbuf, NULL, flags, filter_level);
1680         }
1681
1682         fbuf[len] = '\0';
1683
1684         if (errno) {
1685                 io_error |= IOERR_GENERAL;
1686                 rsyserr(FERROR_XFER, errno, "readdir(%s)", full_fname(fbuf));
1687         }
1688
1689         closedir(d);
1690
1691         if (f >= 0 && recurse && !divert_dirs) {
1692                 int i, end = flist->used - 1;
1693                 /* send_if_directory() bumps flist->used, so use "end". */
1694                 for (i = start; i <= end; i++)
1695                         send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
1696         }
1697 }
1698
1699 static void send_implied_dirs(int f, struct file_list *flist, char *fname,
1700                               char *start, char *limit, int flags, char name_type)
1701 {
1702         static char lastpath[MAXPATHLEN] = "";
1703         static int lastpath_len = 0;
1704         static struct file_struct *lastpath_struct = NULL;
1705         struct file_struct *file;
1706         item_list *relname_list;
1707         relnamecache **rnpp;
1708         int len, need_new_dir, depth = 0;
1709         struct filter_list_struct save_filter_list = filter_list;
1710
1711         flags = (flags | FLAG_IMPLIED_DIR) & ~(FLAG_TOP_DIR | FLAG_CONTENT_DIR);
1712         filter_list.head = filter_list.tail = NULL; /* Don't filter implied dirs. */
1713
1714         if (inc_recurse) {
1715                 if (lastpath_struct && F_PATHNAME(lastpath_struct) == pathname
1716                  && lastpath_len == limit - fname
1717                  && strncmp(lastpath, fname, lastpath_len) == 0)
1718                         need_new_dir = 0;
1719                 else
1720                         need_new_dir = 1;
1721         } else {
1722                 char *tp = fname, *lp = lastpath;
1723                 /* Skip any initial directories in our path that we
1724                  * have in common with lastpath. */
1725                 assert(start == fname);
1726                 for ( ; ; tp++, lp++) {
1727                         if (tp == limit) {
1728                                 if (*lp == '/' || *lp == '\0')
1729                                         goto done;
1730                                 break;
1731                         }
1732                         if (*lp != *tp)
1733                                 break;
1734                         if (*tp == '/') {
1735                                 start = tp;
1736                                 depth++;
1737                         }
1738                 }
1739                 need_new_dir = 1;
1740         }
1741
1742         if (need_new_dir) {
1743                 int save_copy_links = copy_links;
1744                 int save_xfer_dirs = xfer_dirs;
1745                 char *slash;
1746
1747                 copy_links = xfer_dirs = 1;
1748
1749                 *limit = '\0';
1750
1751                 for (slash = start; (slash = strchr(slash+1, '/')) != NULL; ) {
1752                         *slash = '\0';
1753                         file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1754                         depth++;
1755                         if (!inc_recurse && file && S_ISDIR(file->mode))
1756                                 change_local_filter_dir(fname, strlen(fname), depth);
1757                         *slash = '/';
1758                 }
1759
1760                 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1761                 if (inc_recurse) {
1762                         if (file && !S_ISDIR(file->mode))
1763                                 file = NULL;
1764                         lastpath_struct = file;
1765                 } else if (file && S_ISDIR(file->mode))
1766                         change_local_filter_dir(fname, strlen(fname), ++depth);
1767
1768                 strlcpy(lastpath, fname, sizeof lastpath);
1769                 lastpath_len = limit - fname;
1770
1771                 *limit = '/';
1772
1773                 copy_links = save_copy_links;
1774                 xfer_dirs = save_xfer_dirs;
1775
1776                 if (!inc_recurse)
1777                         goto done;
1778         }
1779
1780         if (!lastpath_struct)
1781                 goto done; /* dir must have vanished */
1782
1783         len = strlen(limit+1);
1784         memcpy(&relname_list, F_DIR_RELNAMES_P(lastpath_struct), sizeof relname_list);
1785         if (!relname_list) {
1786                 if (!(relname_list = new0(item_list)))
1787                         out_of_memory("send_implied_dirs");
1788                 memcpy(F_DIR_RELNAMES_P(lastpath_struct), &relname_list, sizeof relname_list);
1789         }
1790         rnpp = EXPAND_ITEM_LIST(relname_list, relnamecache *, 32);
1791         if (!(*rnpp = (relnamecache*)new_array(char, sizeof (relnamecache) + len)))
1792                 out_of_memory("send_implied_dirs");
1793         (*rnpp)->name_type = name_type;
1794         strlcpy((*rnpp)->fname, limit+1, len + 1);
1795
1796 done:
1797         filter_list = save_filter_list;
1798 }
1799
1800 static void send1extra(int f, struct file_struct *file, struct file_list *flist)
1801 {
1802         char fbuf[MAXPATHLEN];
1803         item_list *relname_list;
1804         int len, dlen, flags = FLAG_DIVERT_DIRS | FLAG_CONTENT_DIR;
1805         size_t j;
1806
1807         f_name(file, fbuf);
1808         dlen = strlen(fbuf);
1809
1810         if (!change_pathname(file, NULL, 0))
1811                 exit_cleanup(RERR_FILESELECT);
1812
1813         change_local_filter_dir(fbuf, dlen, send_dir_depth);
1814
1815         if (file->flags & FLAG_CONTENT_DIR) {
1816                 if (one_file_system) {
1817                         STRUCT_STAT st;
1818                         if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
1819                                 io_error |= IOERR_GENERAL;
1820                                 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
1821                                         full_fname(fbuf));
1822                                 return;
1823                         }
1824                         filesystem_dev = st.st_dev;
1825                 }
1826                 send_directory(f, flist, fbuf, dlen, flags);
1827         }
1828
1829         if (!relative_paths)
1830                 return;
1831
1832         memcpy(&relname_list, F_DIR_RELNAMES_P(file), sizeof relname_list);
1833         if (!relname_list)
1834                 return;
1835
1836         for (j = 0; j < relname_list->count; j++) {
1837                 char *slash;
1838                 relnamecache *rnp = ((relnamecache**)relname_list->items)[j];
1839                 char name_type = rnp->name_type;
1840
1841                 fbuf[dlen] = '/';
1842                 len = strlcpy(fbuf + dlen + 1, rnp->fname, sizeof fbuf - dlen - 1);
1843                 free(rnp);
1844                 if (len >= (int)sizeof fbuf)
1845                         continue; /* Impossible... */
1846
1847                 slash = strchr(fbuf+dlen+1, '/');
1848                 if (slash) {
1849                         send_implied_dirs(f, flist, fbuf, fbuf+dlen+1, slash, flags, name_type);
1850                         continue;
1851                 }
1852
1853                 if (name_type != NORMAL_NAME) {
1854                         STRUCT_STAT st;
1855                         if (link_stat(fbuf, &st, 1) != 0) {
1856                                 io_error |= IOERR_GENERAL;
1857                                 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
1858                                         full_fname(fbuf));
1859                                 continue;
1860                         }
1861                         send_file_name(f, flist, fbuf, &st, FLAG_TOP_DIR | flags, ALL_FILTERS);
1862                 } else
1863                         send_file_name(f, flist, fbuf, NULL, FLAG_TOP_DIR | flags, ALL_FILTERS);
1864         }
1865
1866         free(relname_list);
1867 }
1868
1869 void send_extra_file_list(int f, int at_least)
1870 {
1871         struct file_list *flist;
1872         int64 start_write;
1873         uint16 prev_flags;
1874         int old_cnt, save_io_error = io_error;
1875
1876         if (flist_eof)
1877                 return;
1878
1879         /* Keep sending data until we have the requested number of
1880          * files in the upcoming file-lists. */
1881         old_cnt = cur_flist->used;
1882         for (flist = first_flist; flist != cur_flist; flist = flist->next)
1883                 old_cnt += flist->used;
1884         while (file_total - old_cnt < at_least) {
1885                 struct file_struct *file = dir_flist->sorted[send_dir_ndx];
1886                 int dir_ndx, dstart = dir_count;
1887                 const char *pathname = F_PATHNAME(file);
1888                 int32 *dp;
1889
1890                 flist = flist_new(0, "send_extra_file_list");
1891                 start_write = stats.total_written;
1892
1893                 if (unsort_ndx)
1894                         dir_ndx = F_NDX(file);
1895                 else
1896                         dir_ndx = send_dir_ndx;
1897                 write_ndx(f, NDX_FLIST_OFFSET - dir_ndx);
1898                 flist->parent_ndx = dir_ndx;
1899
1900                 send1extra(f, file, flist);
1901                 prev_flags = file->flags;
1902                 dp = F_DIR_NODE_P(file);
1903
1904                 /* If there are any duplicate directory names that follow, we
1905                  * send all the dirs together in one file-list.  The dir_flist
1906                  * tree links all the child subdirs onto the last dup dir. */
1907                 while ((dir_ndx = DIR_NEXT_SIBLING(dp)) >= 0
1908                     && dir_flist->sorted[dir_ndx]->flags & FLAG_DUPLICATE) {
1909                         send_dir_ndx = dir_ndx;
1910                         file = dir_flist->sorted[dir_ndx];
1911                         /* Try to avoid some duplicate scanning of identical dirs. */
1912                         if (F_PATHNAME(file) == pathname && prev_flags & FLAG_CONTENT_DIR)
1913                                 file->flags &= ~FLAG_CONTENT_DIR;
1914                         send1extra(f, file, flist);
1915                         prev_flags = file->flags;
1916                         dp = F_DIR_NODE_P(file);
1917                 }
1918
1919                 write_byte(f, 0);
1920
1921                 if (need_unsorted_flist) {
1922                         if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
1923                                 out_of_memory("send_extra_file_list");
1924                         memcpy(flist->sorted, flist->files,
1925                                flist->used * sizeof (struct file_struct*));
1926                 } else
1927                         flist->sorted = flist->files;
1928
1929                 flist_sort_and_clean(flist, 0);
1930
1931                 add_dirs_to_tree(send_dir_ndx, flist, dir_count - dstart);
1932                 flist_done_allocating(flist);
1933
1934                 file_total += flist->used;
1935                 stats.flist_size += stats.total_written - start_write;
1936                 stats.num_files += flist->used;
1937                 if (DEBUG_GTE(FLIST, 3))
1938                         output_flist(flist);
1939
1940                 if (DIR_FIRST_CHILD(dp) >= 0) {
1941                         send_dir_ndx = DIR_FIRST_CHILD(dp);
1942                         send_dir_depth++;
1943                 } else {
1944                         while (DIR_NEXT_SIBLING(dp) < 0) {
1945                                 if ((send_dir_ndx = DIR_PARENT(dp)) < 0) {
1946                                         write_ndx(f, NDX_FLIST_EOF);
1947                                         flist_eof = 1;
1948                                         change_local_filter_dir(NULL, 0, 0);
1949                                         goto finish;
1950                                 }
1951                                 send_dir_depth--;
1952                                 file = dir_flist->sorted[send_dir_ndx];
1953                                 dp = F_DIR_NODE_P(file);
1954                         }
1955                         send_dir_ndx = DIR_NEXT_SIBLING(dp);
1956                 }
1957         }
1958
1959   finish:
1960         if (io_error != save_io_error && !ignore_errors)
1961                 send_msg_int(MSG_IO_ERROR, io_error);
1962 }
1963
1964 struct file_list *send_file_list(int f, int argc, char *argv[])
1965 {
1966         static const char *lastdir;
1967         static int lastdir_len = -1;
1968         int len, dirlen;
1969         STRUCT_STAT st;
1970         char *p, *dir;
1971         struct file_list *flist;
1972         struct timeval start_tv, end_tv;
1973         int64 start_write;
1974         int use_ff_fd = 0;
1975         int disable_buffering;
1976         int flags = recurse ? FLAG_CONTENT_DIR : 0;
1977         int reading_remotely = filesfrom_host != NULL;
1978         int rl_flags = (reading_remotely ? 0 : RL_DUMP_COMMENTS)
1979 #ifdef ICONV_OPTION
1980                      | (filesfrom_convert ? RL_CONVERT : 0)
1981 #endif
1982                      | (eol_nulls || reading_remotely ? RL_EOL_NULLS : 0);
1983         int implied_dot_dir = 0;
1984
1985         rprintf(FLOG, "building file list\n");
1986         if (show_filelist_p())
1987                 start_filelist_progress("building file list");
1988         else if (inc_recurse && INFO_GTE(FLIST, 1) && !am_server)
1989                 rprintf(FCLIENT, "sending incremental file list\n");
1990
1991         start_write = stats.total_written;
1992         gettimeofday(&start_tv, NULL);
1993
1994         if (!orig_dir)
1995                 orig_dir = strdup(curr_dir);
1996
1997         if (relative_paths && protocol_version >= 30)
1998                 implied_dirs = 1; /* We send flagged implied dirs */
1999
2000 #ifdef SUPPORT_HARD_LINKS
2001         if (preserve_hard_links && protocol_version >= 30 && !cur_flist)
2002                 init_hard_links();
2003 #endif
2004
2005         flist = cur_flist = flist_new(0, "send_file_list");
2006         if (inc_recurse) {
2007                 dir_flist = flist_new(FLIST_TEMP, "send_file_list");
2008                 flags |= FLAG_DIVERT_DIRS;
2009         } else
2010                 dir_flist = cur_flist;
2011
2012         disable_buffering = io_start_buffering_out(f);
2013         if (filesfrom_fd >= 0) {
2014                 if (argv[0] && !change_dir(argv[0], CD_NORMAL)) {
2015                         rsyserr(FERROR_XFER, errno, "change_dir %s failed",
2016                                 full_fname(argv[0]));
2017                         exit_cleanup(RERR_FILESELECT);
2018                 }
2019                 use_ff_fd = 1;
2020         }
2021
2022         while (1) {
2023                 char fbuf[MAXPATHLEN], *fn, name_type;
2024
2025                 if (use_ff_fd) {
2026                         if (read_line(filesfrom_fd, fbuf, sizeof fbuf, rl_flags) == 0)
2027                                 break;
2028                         sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2029                 } else {
2030                         if (argc-- == 0)
2031                                 break;
2032                         strlcpy(fbuf, *argv++, MAXPATHLEN);
2033                         if (sanitize_paths)
2034                                 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2035                 }
2036
2037                 len = strlen(fbuf);
2038                 if (relative_paths) {
2039                         /* We clean up fbuf below. */
2040                         name_type = NORMAL_NAME;
2041                 } else if (!len || fbuf[len - 1] == '/') {
2042                         if (len == 2 && fbuf[0] == '.') {
2043                                 /* Turn "./" into just "." rather than "./." */
2044                                 fbuf[--len] = '\0';
2045                         } else {
2046                                 if (len + 1 >= MAXPATHLEN)
2047                                         overflow_exit("send_file_list");
2048                                 fbuf[len++] = '.';
2049                                 fbuf[len] = '\0';
2050                         }
2051                         name_type = DOTDIR_NAME;
2052                 } else if (len > 1 && fbuf[len-1] == '.' && fbuf[len-2] == '.'
2053                     && (len == 2 || fbuf[len-3] == '/')) {
2054                         if (len + 2 >= MAXPATHLEN)
2055                                 overflow_exit("send_file_list");
2056                         fbuf[len++] = '/';
2057                         fbuf[len++] = '.';
2058                         fbuf[len] = '\0';
2059                         name_type = DOTDIR_NAME;
2060                 } else if (fbuf[len-1] == '.' && (len == 1 || fbuf[len-2] == '/'))
2061                         name_type = DOTDIR_NAME;
2062                 else
2063                         name_type = NORMAL_NAME;
2064
2065                 dir = NULL;
2066
2067                 if (!relative_paths) {
2068                         p = strrchr(fbuf, '/');
2069                         if (p) {
2070                                 *p = '\0';
2071                                 if (p == fbuf)
2072                                         dir = "/";
2073                                 else
2074                                         dir = fbuf;
2075                                 len -= p - fbuf + 1;
2076                                 fn = p + 1;
2077                         } else
2078                                 fn = fbuf;
2079                 } else {
2080                         if ((p = strstr(fbuf, "/./")) != NULL) {
2081                                 *p = '\0';
2082                                 if (p == fbuf)
2083                                         dir = "/";
2084                                 else {
2085                                         dir = fbuf;
2086                                         clean_fname(dir, 0);
2087                                 }
2088                                 fn = p + 3;
2089                                 while (*fn == '/')
2090                                         fn++;
2091                                 if (!*fn)
2092                                         *--fn = '\0'; /* ensure room for '.' */
2093                         } else
2094                                 fn = fbuf;
2095                         /* A leading ./ can be used in relative mode to affect
2096                          * the dest dir without its name being in the path. */
2097                         if (*fn == '.' && fn[1] == '/' && !implied_dot_dir) {
2098                                 send_file_name(f, flist, ".", NULL,
2099                                     (flags | FLAG_IMPLIED_DIR) & ~FLAG_CONTENT_DIR,
2100                                     ALL_FILTERS);
2101                                 implied_dot_dir = 1;
2102                         }
2103                         len = clean_fname(fn, CFN_KEEP_TRAILING_SLASH
2104                                             | CFN_DROP_TRAILING_DOT_DIR);
2105                         if (len == 1) {
2106                                 if (fn[0] == '/') {
2107                                         fn = "/.";
2108                                         len = 2;
2109                                         name_type = DOTDIR_NAME;
2110                                 } else if (fn[0] == '.')
2111                                         name_type = DOTDIR_NAME;
2112                         } else if (fn[len-1] == '/') {
2113                                 fn[--len] = '\0';
2114                                 if (len == 1 && *fn == '.')
2115                                         name_type = DOTDIR_NAME;
2116                                 else
2117                                         name_type = SLASH_ENDING_NAME;
2118                         }
2119                         /* Reject a ".." dir in the active part of the path. */
2120                         for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
2121                                 if ((p[2] == '/' || p[2] == '\0')
2122                                  && (p == fn || p[-1] == '/')) {
2123                                         rprintf(FERROR,
2124                                             "found \"..\" dir in relative path: %s\n",
2125                                             fn);
2126                                         exit_cleanup(RERR_SYNTAX);
2127                                 }
2128                         }
2129                 }
2130
2131                 if (!*fn) {
2132                         len = 1;
2133                         fn = ".";
2134                         name_type = DOTDIR_NAME;
2135                 }
2136
2137                 dirlen = dir ? strlen(dir) : 0;
2138                 if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
2139                         if (!change_pathname(NULL, dir, -dirlen))
2140                                 continue;
2141                         lastdir = pathname;
2142                         lastdir_len = pathname_len;
2143                 } else if (!change_pathname(NULL, lastdir, lastdir_len))
2144                         continue;
2145
2146                 if (fn != fbuf)
2147                         memmove(fbuf, fn, len + 1);
2148
2149                 if (link_stat(fbuf, &st, copy_dirlinks || name_type != NORMAL_NAME) != 0
2150                  || (name_type != DOTDIR_NAME && is_daemon_excluded(fbuf, S_ISDIR(st.st_mode)))
2151                  || (relative_paths && path_is_daemon_excluded(fbuf, 1))) {
2152                         io_error |= IOERR_GENERAL;
2153                         rsyserr(FERROR_XFER, errno, "link_stat %s failed",
2154                                 full_fname(fbuf));
2155                         continue;
2156                 }
2157
2158                 /* A dot-dir should not be excluded! */
2159                 if (name_type != DOTDIR_NAME
2160                  && is_excluded(fbuf, S_ISDIR(st.st_mode) != 0, ALL_FILTERS))
2161                         continue;
2162
2163                 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
2164                         rprintf(FINFO, "skipping directory %s\n", fbuf);
2165                         continue;
2166                 }
2167
2168                 if (inc_recurse && relative_paths && *fbuf) {
2169                         if ((p = strchr(fbuf+1, '/')) != NULL) {
2170                                 if (p - fbuf == 1 && *fbuf == '.') {
2171                                         if ((fn = strchr(p+1, '/')) != NULL)
2172                                                 p = fn;
2173                                 } else
2174                                         fn = p;
2175                                 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, name_type);
2176                                 if (fn == p)
2177                                         continue;
2178                         }
2179                 } else if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
2180                         /* Send the implied directories at the start of the
2181                          * source spec, so we get their permissions right. */
2182                         send_implied_dirs(f, flist, fbuf, fbuf, p, flags, 0);
2183                 }
2184
2185                 if (one_file_system)
2186                         filesystem_dev = st.st_dev;
2187
2188                 if (recurse || (xfer_dirs && name_type != NORMAL_NAME)) {
2189                         struct file_struct *file;
2190                         file = send_file_name(f, flist, fbuf, &st,
2191                                               FLAG_TOP_DIR | FLAG_CONTENT_DIR | flags,
2192                                               NO_FILTERS);
2193                         if (!file)
2194                                 continue;
2195                         if (inc_recurse) {
2196                                 if (name_type == DOTDIR_NAME) {
2197                                         if (send_dir_depth < 0) {
2198                                                 send_dir_depth = 0;
2199                                                 change_local_filter_dir(fbuf, len, send_dir_depth);
2200                                         }
2201                                         send_directory(f, flist, fbuf, len, flags);
2202                                 }
2203                         } else
2204                                 send_if_directory(f, flist, file, fbuf, len, flags);
2205                 } else
2206                         send_file_name(f, flist, fbuf, &st, flags, NO_FILTERS);
2207         }
2208
2209         gettimeofday(&end_tv, NULL);
2210         stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2211                               + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2212         if (stats.flist_buildtime == 0)
2213                 stats.flist_buildtime = 1;
2214         start_tv = end_tv;
2215
2216         write_byte(f, 0); /* Indicate end of file list */
2217
2218 #ifdef SUPPORT_HARD_LINKS
2219         if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
2220                 idev_destroy();
2221 #endif
2222
2223         if (show_filelist_p())
2224                 finish_filelist_progress(flist);
2225
2226         gettimeofday(&end_tv, NULL);
2227         stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2228                              + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2229
2230         /* When converting names, both sides keep an unsorted file-list array
2231          * because the names will differ on the sending and receiving sides
2232          * (both sides will use the unsorted index number for each item). */
2233
2234         /* Sort the list without removing any duplicates.  This allows the
2235          * receiving side to ask for whatever name it kept.  For incremental
2236          * recursion mode, the sender marks duplicate dirs so that it can
2237          * send them together in a single file-list. */
2238         if (need_unsorted_flist) {
2239                 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2240                         out_of_memory("send_file_list");
2241                 memcpy(flist->sorted, flist->files,
2242                        flist->used * sizeof (struct file_struct*));
2243         } else
2244                 flist->sorted = flist->files;
2245         flist_sort_and_clean(flist, 0);
2246         file_total += flist->used;
2247
2248         if (numeric_ids <= 0 && !inc_recurse)
2249                 send_id_list(f);
2250
2251         /* send the io_error flag */
2252         if (protocol_version < 30)
2253                 write_int(f, ignore_errors ? 0 : io_error);
2254         else if (io_error && !ignore_errors)
2255                 send_msg_int(MSG_IO_ERROR, io_error);
2256
2257         if (disable_buffering)
2258                 io_end_buffering_out();
2259
2260         stats.flist_size = stats.total_written - start_write;
2261         stats.num_files = flist->used;
2262
2263         if (DEBUG_GTE(FLIST, 3))
2264                 output_flist(flist);
2265
2266         if (DEBUG_GTE(FLIST, 2))
2267                 rprintf(FINFO, "send_file_list done\n");
2268
2269         if (inc_recurse) {
2270                 send_dir_depth = 1;
2271                 add_dirs_to_tree(-1, flist, dir_count);
2272                 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2273                         flist->parent_ndx = -1;
2274                 flist_done_allocating(flist);
2275                 if (send_dir_ndx < 0) {
2276                         write_ndx(f, NDX_FLIST_EOF);
2277                         flist_eof = 1;
2278                 }
2279                 else if (file_total == 1) {
2280                         /* If we're creating incremental file-lists and there
2281                          * was just 1 item in the first file-list, send 1 more
2282                          * file-list to check if this is a 1-file xfer. */
2283                         send_extra_file_list(f, 1);
2284                 }
2285         }
2286
2287         return flist;
2288 }
2289
2290 struct file_list *recv_file_list(int f)
2291 {
2292         struct file_list *flist;
2293         int dstart, flags;
2294         int64 start_read;
2295
2296         if (!first_flist) {
2297                 if (show_filelist_p())
2298                         start_filelist_progress("receiving file list");
2299                 else if (inc_recurse && INFO_GTE(FLIST, 1) && !am_server)
2300                         rprintf(FCLIENT, "receiving incremental file list\n");
2301                 rprintf(FLOG, "receiving file list\n");
2302         }
2303
2304         start_read = stats.total_read;
2305
2306 #ifdef SUPPORT_HARD_LINKS
2307         if (preserve_hard_links && !first_flist)
2308                 init_hard_links();
2309 #endif
2310
2311         flist = flist_new(0, "recv_file_list");
2312
2313         if (inc_recurse) {
2314                 if (flist->ndx_start == 1)
2315                         dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
2316                 dstart = dir_flist->used;
2317         } else {
2318                 dir_flist = flist;
2319                 dstart = 0;
2320         }
2321
2322         while ((flags = read_byte(f)) != 0) {
2323                 struct file_struct *file;
2324
2325                 flist_expand(flist, 1);
2326
2327                 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
2328                         flags |= read_byte(f) << 8;
2329                 file = recv_file_entry(flist, flags, f);
2330
2331                 if (inc_recurse && S_ISDIR(file->mode)) {
2332                         flist_expand(dir_flist, 1);
2333                         dir_flist->files[dir_flist->used++] = file;
2334                 }
2335
2336                 flist->files[flist->used++] = file;
2337
2338                 maybe_emit_filelist_progress(flist->used);
2339
2340                 if (DEBUG_GTE(FLIST, 2)) {
2341                         char *name = f_name(file, NULL);
2342                         rprintf(FINFO, "recv_file_name(%s)\n", NS(name));
2343                 }
2344         }
2345         file_total += flist->used;
2346
2347         if (DEBUG_GTE(FLIST, 2))
2348                 rprintf(FINFO, "received %d names\n", flist->used);
2349
2350         if (show_filelist_p())
2351                 finish_filelist_progress(flist);
2352
2353         if (need_unsorted_flist) {
2354                 /* Create an extra array of index pointers that we can sort for
2355                  * the generator's use (for wading through the files in sorted
2356                  * order and for calling flist_find()).  We keep the "files"
2357                  * list unsorted for our exchange of index numbers with the
2358                  * other side (since their names may not sort the same). */
2359                 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2360                         out_of_memory("recv_file_list");
2361                 memcpy(flist->sorted, flist->files,
2362                        flist->used * sizeof (struct file_struct*));
2363                 if (inc_recurse && dir_flist->used > dstart) {
2364                         static int dir_flist_malloced = 0;
2365                         if (dir_flist_malloced < dir_flist->malloced) {
2366                                 dir_flist->sorted = realloc_array(dir_flist->sorted,
2367                                                         struct file_struct *,
2368                                                         dir_flist->malloced);
2369                                 dir_flist_malloced = dir_flist->malloced;
2370                         }
2371                         memcpy(dir_flist->sorted + dstart, dir_flist->files + dstart,
2372                                (dir_flist->used - dstart) * sizeof (struct file_struct*));
2373                         fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2374                 }
2375         } else {
2376                 flist->sorted = flist->files;
2377                 if (inc_recurse && dir_flist->used > dstart) {
2378                         dir_flist->sorted = dir_flist->files;
2379                         fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2380                 }
2381         }
2382
2383         if (inc_recurse)
2384                 flist_done_allocating(flist);
2385         else if (f >= 0)
2386                 recv_id_list(f, flist);
2387
2388         flist_sort_and_clean(flist, relative_paths);
2389
2390         if (protocol_version < 30) {
2391                 /* Recv the io_error flag */
2392                 if (ignore_errors)
2393                         read_int(f);
2394                 else
2395                         io_error |= read_int(f);
2396         } else if (inc_recurse && flist->ndx_start == 1) {
2397                 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2398                         flist->parent_ndx = -1;
2399         }
2400
2401         if (DEBUG_GTE(FLIST, 3))
2402                 output_flist(flist);
2403
2404         if (DEBUG_GTE(FLIST, 2))
2405                 rprintf(FINFO, "recv_file_list done\n");
2406
2407         stats.flist_size += stats.total_read - start_read;
2408         stats.num_files += flist->used;
2409
2410         return flist;
2411 }
2412
2413 /* This is only used once by the receiver if the very first file-list
2414  * has exactly one item in it. */
2415 void recv_additional_file_list(int f)
2416 {
2417         struct file_list *flist;
2418         int ndx = read_ndx(f);
2419         if (ndx == NDX_FLIST_EOF) {
2420                 flist_eof = 1;
2421                 change_local_filter_dir(NULL, 0, 0);
2422         } else {
2423                 ndx = NDX_FLIST_OFFSET - ndx;
2424                 if (ndx < 0 || ndx >= dir_flist->used) {
2425                         ndx = NDX_FLIST_OFFSET - ndx;
2426                         rprintf(FERROR,
2427                                 "[%s] Invalid dir index: %d (%d - %d)\n",
2428                                 who_am_i(), ndx, NDX_FLIST_OFFSET,
2429                                 NDX_FLIST_OFFSET - dir_flist->used + 1);
2430                         exit_cleanup(RERR_PROTOCOL);
2431                 }
2432                 if (DEBUG_GTE(FLIST, 3)) {
2433                         rprintf(FINFO, "[%s] receiving flist for dir %d\n",
2434                                 who_am_i(), ndx);
2435                 }
2436                 flist = recv_file_list(f);
2437                 flist->parent_ndx = ndx;
2438         }
2439 }
2440
2441 /* Search for an identically-named item in the file list.  Note that the
2442  * items must agree in their directory-ness, or no match is returned. */
2443 int flist_find(struct file_list *flist, struct file_struct *f)
2444 {
2445         int low = flist->low, high = flist->high;
2446         int diff, mid, mid_up;
2447
2448         while (low <= high) {
2449                 mid = (low + high) / 2;
2450                 if (F_IS_ACTIVE(flist->sorted[mid]))
2451                         mid_up = mid;
2452                 else {
2453                         /* Scan for the next non-empty entry using the cached
2454                          * distance values.  If the value isn't fully up-to-
2455                          * date, update it. */
2456                         mid_up = mid + F_DEPTH(flist->sorted[mid]);
2457                         if (!F_IS_ACTIVE(flist->sorted[mid_up])) {
2458                                 do {
2459                                     mid_up += F_DEPTH(flist->sorted[mid_up]);
2460                                 } while (!F_IS_ACTIVE(flist->sorted[mid_up]));
2461                                 F_DEPTH(flist->sorted[mid]) = mid_up - mid;
2462                         }
2463                         if (mid_up > high) {
2464                                 /* If there's nothing left above us, set high to
2465                                  * a non-empty entry below us and continue. */
2466                                 high = mid - (int)flist->sorted[mid]->len32;
2467                                 if (!F_IS_ACTIVE(flist->sorted[high])) {
2468                                         do {
2469                                             high -= (int)flist->sorted[high]->len32;
2470                                         } while (!F_IS_ACTIVE(flist->sorted[high]));
2471                                         flist->sorted[mid]->len32 = mid - high;
2472                                 }
2473                                 continue;
2474                         }
2475                 }
2476                 diff = f_name_cmp(flist->sorted[mid_up], f);
2477                 if (diff == 0) {
2478                         if (protocol_version < 29
2479                             && S_ISDIR(flist->sorted[mid_up]->mode)
2480                             != S_ISDIR(f->mode))
2481                                 return -1;
2482                         return mid_up;
2483                 }
2484                 if (diff < 0)
2485                         low = mid_up + 1;
2486                 else
2487                         high = mid - 1;
2488         }
2489         return -1;
2490 }
2491
2492 /*
2493  * Free up any resources a file_struct has allocated
2494  * and clear the file.
2495  */
2496 void clear_file(struct file_struct *file)
2497 {
2498         /* The +1 zeros out the first char of the basename. */
2499         memset(file, 0, FILE_STRUCT_LEN + 1);
2500         /* In an empty entry, F_DEPTH() is an offset to the next non-empty
2501          * entry.  Likewise for len32 in the opposite direction.  We assume
2502          * that we're alone for now since flist_find() will adjust the counts
2503          * it runs into that aren't up-to-date. */
2504         file->len32 = F_DEPTH(file) = 1;
2505 }
2506
2507 /* Allocate a new file list. */
2508 struct file_list *flist_new(int flags, char *msg)
2509 {
2510         struct file_list *flist;
2511
2512         if (!(flist = new0(struct file_list)))
2513                 out_of_memory(msg);
2514
2515         if (flags & FLIST_TEMP) {
2516                 if (!(flist->file_pool = pool_create(SMALL_EXTENT, 0,
2517                                                      out_of_memory,
2518                                                      POOL_INTERN)))
2519                         out_of_memory(msg);
2520         } else {
2521                 /* This is a doubly linked list with prev looping back to
2522                  * the end of the list, but the last next pointer is NULL. */
2523                 if (!first_flist) {
2524                         flist->file_pool = pool_create(NORMAL_EXTENT, 0,
2525                                                        out_of_memory,
2526                                                        POOL_INTERN);
2527                         if (!flist->file_pool)
2528                                 out_of_memory(msg);
2529
2530                         flist->ndx_start = flist->flist_num = inc_recurse ? 1 : 0;
2531
2532                         first_flist = cur_flist = flist->prev = flist;
2533                 } else {
2534                         struct file_list *prev = first_flist->prev;
2535
2536                         flist->file_pool = first_flist->file_pool;
2537
2538                         flist->ndx_start = prev->ndx_start + prev->used + 1;
2539                         flist->flist_num = prev->flist_num + 1;
2540
2541                         flist->prev = prev;
2542                         prev->next = first_flist->prev = flist;
2543                 }
2544                 flist->pool_boundary = pool_boundary(flist->file_pool, 0);
2545                 flist_cnt++;
2546         }
2547
2548         return flist;
2549 }
2550
2551 /* Free up all elements in a flist. */
2552 void flist_free(struct file_list *flist)
2553 {
2554         if (!flist->prev) {
2555                 /* Was FLIST_TEMP dir-list. */
2556         } else if (flist == flist->prev) {
2557                 first_flist = cur_flist = NULL;
2558                 file_total = 0;
2559                 flist_cnt = 0;
2560         } else {
2561                 if (flist == cur_flist)
2562                         cur_flist = flist->next;
2563                 if (flist == first_flist)
2564                         first_flist = first_flist->next;
2565                 else {
2566                         flist->prev->next = flist->next;
2567                         if (!flist->next)
2568                                 flist->next = first_flist;
2569                 }
2570                 flist->next->prev = flist->prev;
2571                 file_total -= flist->used;
2572                 flist_cnt--;
2573         }
2574
2575         if (!flist->prev || !flist_cnt)
2576                 pool_destroy(flist->file_pool);
2577         else
2578                 pool_free_old(flist->file_pool, flist->pool_boundary);
2579
2580         if (flist->sorted && flist->sorted != flist->files)
2581                 free(flist->sorted);
2582         free(flist->files);
2583         free(flist);
2584 }
2585
2586 /* This routine ensures we don't have any duplicate names in our file list.
2587  * duplicate names can cause corruption because of the pipelining. */
2588 static void flist_sort_and_clean(struct file_list *flist, int strip_root)
2589 {
2590         char fbuf[MAXPATHLEN];
2591         int i, prev_i;
2592
2593         if (!flist)
2594                 return;
2595         if (flist->used == 0) {
2596                 flist->high = -1;
2597                 flist->low = 0;
2598                 return;
2599         }
2600
2601         fsort(flist->sorted, flist->used);
2602
2603         if (!am_sender || inc_recurse) {
2604                 for (i = prev_i = 0; i < flist->used; i++) {
2605                         if (F_IS_ACTIVE(flist->sorted[i])) {
2606                                 prev_i = i;
2607                                 break;
2608                         }
2609                 }
2610                 flist->low = prev_i;
2611         } else {
2612                 i = prev_i = flist->used - 1;
2613                 flist->low = 0;
2614         }
2615
2616         while (++i < flist->used) {
2617                 int j;
2618                 struct file_struct *file = flist->sorted[i];
2619
2620                 if (!F_IS_ACTIVE(file))
2621                         continue;
2622                 if (f_name_cmp(file, flist->sorted[prev_i]) == 0)
2623                         j = prev_i;
2624                 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
2625                         int save_mode = file->mode;
2626                         /* Make sure that this directory doesn't duplicate a
2627                          * non-directory earlier in the list. */
2628                         flist->high = prev_i;
2629                         file->mode = S_IFREG;
2630                         j = flist_find(flist, file);
2631                         file->mode = save_mode;
2632                 } else
2633                         j = -1;
2634                 if (j >= 0) {
2635                         int keep, drop;
2636                         /* If one is a dir and the other is not, we want to
2637                          * keep the dir because it might have contents in the
2638                          * list.  Otherwise keep the first one. */
2639                         if (S_ISDIR(file->mode)) {
2640                                 struct file_struct *fp = flist->sorted[j];
2641                                 if (!S_ISDIR(fp->mode))
2642                                         keep = i, drop = j;
2643                                 else {
2644                                         if (am_sender)
2645                                                 file->flags |= FLAG_DUPLICATE;
2646                                         else { /* Make sure we merge our vital flags. */
2647                                                 fp->flags |= file->flags & (FLAG_TOP_DIR|FLAG_CONTENT_DIR);
2648                                                 fp->flags &= file->flags | ~FLAG_IMPLIED_DIR;
2649                                         }
2650                                         keep = j, drop = i;
2651                                 }
2652                         } else
2653                                 keep = j, drop = i;
2654
2655                         if (!am_sender) {
2656                                 if (DEBUG_GTE(DUP, 1)) {
2657                                         rprintf(FINFO,
2658                                             "removing duplicate name %s from file list (%d)\n",
2659                                             f_name(file, fbuf), drop + flist->ndx_start);
2660                                 }
2661                                 clear_file(flist->sorted[drop]);
2662                         }
2663
2664                         if (keep == i) {
2665                                 if (flist->low == drop) {
2666                                         for (j = drop + 1;
2667                                              j < i && !F_IS_ACTIVE(flist->sorted[j]);
2668                                              j++) {}
2669                                         flist->low = j;
2670                                 }
2671                                 prev_i = i;
2672                         }
2673                 } else
2674                         prev_i = i;
2675         }
2676         flist->high = prev_i;
2677
2678         if (strip_root) {
2679                 /* We need to strip off the leading slashes for relative
2680                  * paths, but this must be done _after_ the sorting phase. */
2681                 for (i = flist->low; i <= flist->high; i++) {
2682                         struct file_struct *file = flist->sorted[i];
2683
2684                         if (!file->dirname)
2685                                 continue;
2686                         while (*file->dirname == '/')
2687                                 file->dirname++;
2688                         if (!*file->dirname)
2689                                 file->dirname = NULL;
2690                 }
2691         }
2692
2693         if (prune_empty_dirs && !am_sender) {
2694                 int j, prev_depth = 0;
2695
2696                 prev_i = 0; /* It's OK that this isn't really true. */
2697
2698                 for (i = flist->low; i <= flist->high; i++) {
2699                         struct file_struct *fp, *file = flist->sorted[i];
2700
2701                         /* This temporarily abuses the F_DEPTH() value for a
2702                          * directory that is in a chain that might get pruned.
2703                          * We restore the old value if it gets a reprieve. */
2704                         if (S_ISDIR(file->mode) && F_DEPTH(file)) {
2705                                 /* Dump empty dirs when coming back down. */
2706                                 for (j = prev_depth; j >= F_DEPTH(file); j--) {
2707                                         fp = flist->sorted[prev_i];
2708                                         if (F_DEPTH(fp) >= 0)
2709                                                 break;
2710                                         prev_i = -F_DEPTH(fp)-1;
2711                                         clear_file(fp);
2712                                 }
2713                                 prev_depth = F_DEPTH(file);
2714                                 if (is_excluded(f_name(file, fbuf), 1,
2715                                                        ALL_FILTERS)) {
2716                                         /* Keep dirs through this dir. */
2717                                         for (j = prev_depth-1; ; j--) {
2718                                                 fp = flist->sorted[prev_i];
2719                                                 if (F_DEPTH(fp) >= 0)
2720                                                         break;
2721                                                 prev_i = -F_DEPTH(fp)-1;
2722                                                 F_DEPTH(fp) = j;
2723                                         }
2724                                 } else
2725                                         F_DEPTH(file) = -prev_i-1;
2726                                 prev_i = i;
2727                         } else {
2728                                 /* Keep dirs through this non-dir. */
2729                                 for (j = prev_depth; ; j--) {
2730                                         fp = flist->sorted[prev_i];
2731                                         if (F_DEPTH(fp) >= 0)
2732                                                 break;
2733                                         prev_i = -F_DEPTH(fp)-1;
2734                                         F_DEPTH(fp) = j;
2735                                 }
2736                         }
2737                 }
2738                 /* Dump all remaining empty dirs. */
2739                 while (1) {
2740                         struct file_struct *fp = flist->sorted[prev_i];
2741                         if (F_DEPTH(fp) >= 0)
2742                                 break;
2743                         prev_i = -F_DEPTH(fp)-1;
2744                         clear_file(fp);
2745                 }
2746
2747                 for (i = flist->low; i <= flist->high; i++) {
2748                         if (F_IS_ACTIVE(flist->sorted[i]))
2749                                 break;
2750                 }
2751                 flist->low = i;
2752                 for (i = flist->high; i >= flist->low; i--) {
2753                         if (F_IS_ACTIVE(flist->sorted[i]))
2754                                 break;
2755                 }
2756                 flist->high = i;
2757         }
2758 }
2759
2760 static void output_flist(struct file_list *flist)
2761 {
2762         char uidbuf[16], gidbuf[16], depthbuf[16];
2763         struct file_struct *file;
2764         const char *root, *dir, *slash, *name, *trail;
2765         const char *who = who_am_i();
2766         int i;
2767
2768         rprintf(FINFO, "[%s] flist start=%d, used=%d, low=%d, high=%d\n",
2769                 who, flist->ndx_start, flist->used, flist->low, flist->high);
2770         for (i = 0; i < flist->used; i++) {
2771                 file = flist->files[i];
2772                 if ((am_root || am_sender) && uid_ndx) {
2773                         snprintf(uidbuf, sizeof uidbuf, " uid=%u",
2774                                  F_OWNER(file));
2775                 } else
2776                         *uidbuf = '\0';
2777                 if (gid_ndx) {
2778                         static char parens[] = "(\0)\0\0\0";
2779                         char *pp = parens + (file->flags & FLAG_SKIP_GROUP ? 0 : 3);
2780                         snprintf(gidbuf, sizeof gidbuf, " gid=%s%u%s",
2781                                  pp, F_GROUP(file), pp + 2);
2782                 } else
2783                         *gidbuf = '\0';
2784                 if (!am_sender)
2785                         snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
2786                 if (F_IS_ACTIVE(file)) {
2787                         root = am_sender ? NS(F_PATHNAME(file)) : depthbuf;
2788                         if ((dir = file->dirname) == NULL)
2789                                 dir = slash = "";
2790                         else
2791                                 slash = "/";
2792                         name = file->basename;
2793                         trail = S_ISDIR(file->mode) ? "/" : "";
2794                 } else
2795                         root = dir = slash = name = trail = "";
2796                 rprintf(FINFO,
2797                         "[%s] i=%d %s %s%s%s%s mode=0%o len=%s%s%s flags=%x\n",
2798                         who, i + flist->ndx_start,
2799                         root, dir, slash, name, trail,
2800                         (int)file->mode, big_num(F_LENGTH(file), 0),
2801                         uidbuf, gidbuf, file->flags);
2802         }
2803 }
2804
2805 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
2806 enum fnc_type { t_PATH, t_ITEM };
2807
2808 static int found_prefix;
2809
2810 /* Compare the names of two file_struct entities, similar to how strcmp()
2811  * would do if it were operating on the joined strings.
2812  *
2813  * Some differences beginning with protocol_version 29: (1) directory names
2814  * are compared with an assumed trailing slash so that they compare in a
2815  * way that would cause them to sort immediately prior to any content they
2816  * may have; (2) a directory of any name compares after a non-directory of
2817  * any name at the same depth; (3) a directory with name "." compares prior
2818  * to anything else.  These changes mean that a directory and a non-dir
2819  * with the same name will not compare as equal (protocol_version >= 29).
2820  *
2821  * The dirname component can be an empty string, but the basename component
2822  * cannot (and never is in the current codebase).  The basename component
2823  * may be NULL (for a removed item), in which case it is considered to be
2824  * after any existing item. */
2825 int f_name_cmp(const struct file_struct *f1, const struct file_struct *f2)
2826 {
2827         int dif;
2828         const uchar *c1, *c2;
2829         enum fnc_state state1, state2;
2830         enum fnc_type type1, type2;
2831         enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
2832
2833         if (!f1 || !F_IS_ACTIVE(f1)) {
2834                 if (!f2 || !F_IS_ACTIVE(f2))
2835                         return 0;
2836                 return -1;
2837         }
2838         if (!f2 || !F_IS_ACTIVE(f2))
2839                 return 1;
2840
2841         c1 = (uchar*)f1->dirname;
2842         c2 = (uchar*)f2->dirname;
2843         if (c1 == c2)
2844                 c1 = c2 = NULL;
2845         if (!c1) {
2846                 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2847                 c1 = (const uchar*)f1->basename;
2848                 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2849                         type1 = t_ITEM;
2850                         state1 = s_TRAILING;
2851                         c1 = (uchar*)"";
2852                 } else
2853                         state1 = s_BASE;
2854         } else {
2855                 type1 = t_path;
2856                 state1 = s_DIR;
2857         }
2858         if (!c2) {
2859                 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2860                 c2 = (const uchar*)f2->basename;
2861                 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2862                         type2 = t_ITEM;
2863                         state2 = s_TRAILING;
2864                         c2 = (uchar*)"";
2865                 } else
2866                         state2 = s_BASE;
2867         } else {
2868                 type2 = t_path;
2869                 state2 = s_DIR;
2870         }
2871
2872         if (type1 != type2)
2873                 return type1 == t_PATH ? 1 : -1;
2874
2875         do {
2876                 if (!*c1) {
2877                         switch (state1) {
2878                         case s_DIR:
2879                                 state1 = s_SLASH;
2880                                 c1 = (uchar*)"/";
2881                                 break;
2882                         case s_SLASH:
2883                                 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2884                                 c1 = (const uchar*)f1->basename;
2885                                 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2886                                         type1 = t_ITEM;
2887                                         state1 = s_TRAILING;
2888                                         c1 = (uchar*)"";
2889                                 } else
2890                                         state1 = s_BASE;
2891                                 break;
2892                         case s_BASE:
2893                                 state1 = s_TRAILING;
2894                                 if (type1 == t_PATH) {
2895                                         c1 = (uchar*)"/";
2896                                         break;
2897                                 }
2898                                 /* FALL THROUGH */
2899                         case s_TRAILING:
2900                                 type1 = t_ITEM;
2901                                 break;
2902                         }
2903                         if (*c2 && type1 != type2)
2904                                 return type1 == t_PATH ? 1 : -1;
2905                 }
2906                 if (!*c2) {
2907                         switch (state2) {
2908                         case s_DIR:
2909                                 state2 = s_SLASH;
2910                                 c2 = (uchar*)"/";
2911                                 break;
2912                         case s_SLASH:
2913                                 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2914                                 c2 = (const uchar*)f2->basename;
2915                                 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2916                                         type2 = t_ITEM;
2917                                         state2 = s_TRAILING;
2918                                         c2 = (uchar*)"";
2919                                 } else
2920                                         state2 = s_BASE;
2921                                 break;
2922                         case s_BASE:
2923                                 state2 = s_TRAILING;
2924                                 if (type2 == t_PATH) {
2925                                         c2 = (uchar*)"/";
2926                                         break;
2927                                 }
2928                                 /* FALL THROUGH */
2929                         case s_TRAILING:
2930                                 found_prefix = 1;
2931                                 if (!*c1)
2932                                         return 0;
2933                                 type2 = t_ITEM;
2934                                 break;
2935                         }
2936                         if (type1 != type2)
2937                                 return type1 == t_PATH ? 1 : -1;
2938                 }
2939         } while ((dif = (int)*c1++ - (int)*c2++) == 0);
2940
2941         return dif;
2942 }
2943
2944 /* Returns 1 if f1's filename has all of f2's filename as a prefix.  This does
2945  * not match if f2's basename is not an exact match of a path element in f1.
2946  * E.g. /path/foo is not a prefix of /path/foobar/baz, but /path/foobar is. */
2947 int f_name_has_prefix(const struct file_struct *f1, const struct file_struct *f2)
2948 {
2949         found_prefix = 0;
2950         f_name_cmp(f1, f2);
2951         return found_prefix;
2952 }
2953
2954 char *f_name_buf(void)
2955 {
2956         static char names[5][MAXPATHLEN];
2957         static unsigned int n;
2958
2959         n = (n + 1) % (sizeof names / sizeof names[0]);
2960
2961         return names[n];
2962 }
2963
2964 /* Return a copy of the full filename of a flist entry, using the indicated
2965  * buffer or one of 5 static buffers if fbuf is NULL.  No size-checking is
2966  * done because we checked the size when creating the file_struct entry.
2967  */
2968 char *f_name(const struct file_struct *f, char *fbuf)
2969 {
2970         if (!f || !F_IS_ACTIVE(f))
2971                 return NULL;
2972
2973         if (!fbuf)
2974                 fbuf = f_name_buf();
2975
2976         if (f->dirname) {
2977                 int len = strlen(f->dirname);
2978                 memcpy(fbuf, f->dirname, len);
2979                 fbuf[len] = '/';
2980                 strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
2981         } else
2982                 strlcpy(fbuf, f->basename, MAXPATHLEN);
2983
2984         return fbuf;
2985 }
2986
2987 /* Do a non-recursive scan of the named directory, possibly ignoring all
2988  * exclude rules except for the daemon's.  If "dlen" is >=0, it is the length
2989  * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
2990  * buffer (the functions we call will append names onto the end, but the old
2991  * dir value will be restored on exit). */
2992 struct file_list *get_dirlist(char *dirname, int dlen, int ignore_filter_rules)
2993 {
2994         struct file_list *dirlist;
2995         char dirbuf[MAXPATHLEN];
2996         int save_recurse = recurse;
2997         int save_xfer_dirs = xfer_dirs;
2998         int save_prune_empty_dirs = prune_empty_dirs;
2999
3000         if (dlen < 0) {
3001                 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
3002                 if (dlen >= MAXPATHLEN)
3003                         return NULL;
3004                 dirname = dirbuf;
3005         }
3006
3007         dirlist = flist_new(FLIST_TEMP, "get_dirlist");
3008
3009         recurse = 0;
3010         xfer_dirs = 1;
3011         send_directory(ignore_filter_rules ? -2 : -1, dirlist, dirname, dlen, 0);
3012         xfer_dirs = save_xfer_dirs;
3013         recurse = save_recurse;
3014         if (INFO_GTE(PROGRESS, 1))
3015                 flist_count_offset += dirlist->used;
3016
3017         prune_empty_dirs = 0;
3018         dirlist->sorted = dirlist->files;
3019         flist_sort_and_clean(dirlist, 0);
3020         prune_empty_dirs = save_prune_empty_dirs;
3021
3022         if (DEBUG_GTE(FLIST, 3))
3023                 output_flist(dirlist);
3024
3025         return dirlist;
3026 }