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 "inums.h"
  27 #include "io.h"
  28
  29 extern int am_root;
  30 extern int am_server;
  31 extern int am_daemon;
  32 extern int am_sender;
  33 extern int am_generator;
  34 extern int inc_recurse;
  35 extern int always_checksum;
  36 extern int module_id;
  37 extern int ignore_errors;
  38 extern int numeric_ids;
  39 extern int recurse;
  40 extern int use_qsort;
  41 extern int xfer_dirs;
  42 extern int filesfrom_fd;
  43 extern int one_file_system;
  44 extern int copy_dirlinks;
  45 extern int keep_dirlinks;
  46 extern int preserve_uid;
  47 extern int preserve_gid;
  48 extern int preserve_acls;
  49 extern int preserve_xattrs;
  50 extern int preserve_links;
  51 extern int preserve_hard_links;
  52 extern int preserve_devices;
  53 extern int preserve_specials;
  54 extern int uid_ndx;
  55 extern int gid_ndx;
  56 extern int eol_nulls;
  57 extern int relative_paths;
  58 extern int implied_dirs;
  59 extern int file_extra_cnt;
  60 extern int ignore_perishable;
  61 extern int non_perishable_cnt;
  62 extern int prune_empty_dirs;
  63 extern int copy_links;
  64 extern int copy_unsafe_links;
  65 extern int protocol_version;
  66 extern int sanitize_paths;
  67 extern int munge_symlinks;
  68 extern int need_unsorted_flist;
  69 extern int sender_symlink_iconv;
  70 extern int output_needs_newline;
  71 extern int sender_keeps_checksum;
  72 extern int unsort_ndx;
  73 extern struct stats stats;
  74 extern char *filesfrom_host;
  75
  76 extern char curr_dir[MAXPATHLEN];
  77
  78 extern struct chmod_mode_struct *chmod_modes;
  79
  80 extern struct filter_list_struct filter_list;
  81 extern struct filter_list_struct daemon_filter_list;
  82
  83 #ifdef ICONV_OPTION
  84 extern int filesfrom_convert;
  85 extern iconv_t ic_send, ic_recv;
  86 #endif
  87
  88 #define PTR_SIZE (sizeof (struct file_struct *))
  89
  90 int io_error;
  91 int checksum_len;
  92 dev_t filesystem_dev; /* used to implement -x */
  93
  94 struct file_list *cur_flist, *first_flist, *dir_flist;
  95 int send_dir_ndx = -1, send_dir_depth = -1;
  96 int flist_cnt = 0; /* how many (non-tmp) file list objects exist */
  97 int file_total = 0; /* total of all active items over all file-lists */
  98 int flist_eof = 0; /* all the file-lists are now known */
  99
 100 #define NORMAL_NAME 0
 101 #define SLASH_ENDING_NAME 1
 102 #define DOTDIR_NAME 2
 103
 104 /* Starting from protocol version 26, we always use 64-bit ino_t and dev_t
 105  * internally, even if this platform does not allow files to have 64-bit inums.
 106  * The only exception is if we're on a platform with no 64-bit type at all.
 107  *
 108  * Because we use read_longint() to get these off the wire, if you transfer
 109  * devices or (for protocols < 30) hardlinks with dev or inum > 2**32 to a
 110  * machine with no 64-bit types then you will get an overflow error.
 111  *
 112  * Note that if you transfer devices from a 64-bit-devt machine (say, Solaris)
 113  * to a 32-bit-devt machine (say, Linux-2.2/x86) then the device numbers will
 114  * be truncated.  But it's a kind of silly thing to do anyhow. */
 115
 116 /* The tmp_* vars are used as a cache area by make_file() to store data
 117  * that the sender doesn't need to remember in its file list.  The data
 118  * will survive just long enough to be used by send_file_entry(). */
 119 static dev_t tmp_rdev;
 120 #ifdef SUPPORT_HARD_LINKS
 121 static int64 tmp_dev, tmp_ino;
 122 #endif
 123 static char tmp_sum[MAX_DIGEST_LEN];
 124
 125 static char empty_sum[MAX_DIGEST_LEN];
 126 static int flist_count_offset; /* for --delete --progress */
 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),
 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 and adjust counts. */
 415         if (S_ISREG(file->mode))
 416                 xflags = 0;
 417         else if (S_ISDIR(file->mode)) {
 418                 stats.num_dirs++;
 419                 if (protocol_version >= 30) {
 420                         if (file->flags & FLAG_CONTENT_DIR)
 421                                 xflags = file->flags & FLAG_TOP_DIR;
 422                         else if (file->flags & FLAG_IMPLIED_DIR)
 423                                 xflags = XMIT_TOP_DIR | XMIT_NO_CONTENT_DIR;
 424                         else
 425                                 xflags = XMIT_NO_CONTENT_DIR;
 426                 } else
 427                         xflags = file->flags & FLAG_TOP_DIR; /* FLAG_TOP_DIR == XMIT_TOP_DIR */
 428         } else {
 429                 if (S_ISLNK(file->mode))
 430                         stats.num_symlinks++;
 431                 else if (IS_DEVICE(file->mode))
 432                         stats.num_devices++;
 433                 else
 434                         stats.num_specials++;
 435                 xflags = 0;
 436         }
 437
 438         if (file->mode == mode)
 439                 xflags |= XMIT_SAME_MODE;
 440         else
 441                 mode = file->mode;
 442
 443         if ((preserve_devices && IS_DEVICE(mode))
 444          || (preserve_specials && IS_SPECIAL(mode))) {
 445                 if (protocol_version < 28) {
 446                         if (tmp_rdev == rdev)
 447                                 xflags |= XMIT_SAME_RDEV_pre28;
 448                         else
 449                                 rdev = tmp_rdev;
 450                 } else {
 451                         rdev = tmp_rdev;
 452                         if ((uint32)major(rdev) == rdev_major)
 453                                 xflags |= XMIT_SAME_RDEV_MAJOR;
 454                         else
 455                                 rdev_major = major(rdev);
 456                         if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu)
 457                                 xflags |= XMIT_RDEV_MINOR_8_pre30;
 458                 }
 459         } else if (protocol_version < 28)
 460                 rdev = MAKEDEV(0, 0);
 461         if (!preserve_uid || ((uid_t)F_OWNER(file) == uid && *lastname))
 462                 xflags |= XMIT_SAME_UID;
 463         else {
 464                 uid = F_OWNER(file);
 465                 if (!numeric_ids) {
 466                         user_name = add_uid(uid);
 467                         if (inc_recurse && user_name)
 468                                 xflags |= XMIT_USER_NAME_FOLLOWS;
 469                 }
 470         }
 471         if (!preserve_gid || ((gid_t)F_GROUP(file) == gid && *lastname))
 472                 xflags |= XMIT_SAME_GID;
 473         else {
 474                 gid = F_GROUP(file);
 475                 if (!numeric_ids) {
 476                         group_name = add_gid(gid);
 477                         if (inc_recurse && group_name)
 478                                 xflags |= XMIT_GROUP_NAME_FOLLOWS;
 479                 }
 480         }
 481         if (file->modtime == modtime)
 482                 xflags |= XMIT_SAME_TIME;
 483         else
 484                 modtime = file->modtime;
 485
 486 #ifdef SUPPORT_HARD_LINKS
 487         if (tmp_dev != 0) {
 488                 if (protocol_version >= 30) {
 489                         struct ht_int64_node *np = idev_find(tmp_dev, tmp_ino);
 490                         first_hlink_ndx = (int32)(long)np->data - 1;
 491                         if (first_hlink_ndx < 0) {
 492                                 np->data = (void*)(long)(first_ndx + ndx + 1);
 493                                 xflags |= XMIT_HLINK_FIRST;
 494                         }
 495                         if (DEBUG_GTE(HLINK, 1)) {
 496                                 if (first_hlink_ndx >= 0) {
 497                                         rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
 498                                                 who_am_i(), first_ndx + ndx, first_hlink_ndx,
 499                                                 first_hlink_ndx >= first_ndx ? "" : "un");
 500                                 } else if (DEBUG_GTE(HLINK, 3)) {
 501                                         rprintf(FINFO, "[%s] dev:inode for #%d is %s:%s\n",
 502                                                 who_am_i(), first_ndx + ndx,
 503                                                 big_num(tmp_dev), big_num(tmp_ino));
 504                                 }
 505                         }
 506                 } else {
 507                         if (tmp_dev == dev) {
 508                                 if (protocol_version >= 28)
 509                                         xflags |= XMIT_SAME_DEV_pre30;
 510                         } else
 511                                 dev = tmp_dev;
 512                 }
 513                 xflags |= XMIT_HLINKED;
 514         }
 515 #endif
 516
 517         for (l1 = 0;
 518             lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
 519             l1++) {}
 520         l2 = strlen(fname+l1);
 521
 522         if (l1 > 0)
 523                 xflags |= XMIT_SAME_NAME;
 524         if (l2 > 255)
 525                 xflags |= XMIT_LONG_NAME;
 526
 527         /* We must make sure we don't send a zero flag byte or the
 528          * other end will terminate the flist transfer.  Note that
 529          * the use of XMIT_TOP_DIR on a non-dir has no meaning, so
 530          * it's harmless way to add a bit to the first flag byte. */
 531         if (protocol_version >= 28) {
 532                 if (!xflags && !S_ISDIR(mode))
 533                         xflags |= XMIT_TOP_DIR;
 534                 if ((xflags & 0xFF00) || !xflags) {
 535                         xflags |= XMIT_EXTENDED_FLAGS;
 536                         write_shortint(f, xflags);
 537                 } else
 538                         write_byte(f, xflags);
 539         } else {
 540                 if (!(xflags & 0xFF))
 541                         xflags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
 542                 write_byte(f, xflags);
 543         }
 544         if (xflags & XMIT_SAME_NAME)
 545                 write_byte(f, l1);
 546         if (xflags & XMIT_LONG_NAME)
 547                 write_varint30(f, l2);
 548         else
 549                 write_byte(f, l2);
 550         write_buf(f, fname + l1, l2);
 551
 552 #ifdef SUPPORT_HARD_LINKS
 553         if (first_hlink_ndx >= 0) {
 554                 write_varint(f, first_hlink_ndx);
 555                 if (first_hlink_ndx >= first_ndx)
 556                         goto the_end;
 557         }
 558 #endif
 559
 560         write_varlong30(f, F_LENGTH(file), 3);
 561         if (!(xflags & XMIT_SAME_TIME)) {
 562                 if (protocol_version >= 30)
 563                         write_varlong(f, modtime, 4);
 564                 else
 565                         write_int(f, modtime);
 566         }
 567         if (!(xflags & XMIT_SAME_MODE))
 568                 write_int(f, to_wire_mode(mode));
 569         if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
 570                 if (protocol_version < 30)
 571                         write_int(f, uid);
 572                 else {
 573                         write_varint(f, uid);
 574                         if (xflags & XMIT_USER_NAME_FOLLOWS) {
 575                                 int len = strlen(user_name);
 576                                 write_byte(f, len);
 577                                 write_buf(f, user_name, len);
 578                         }
 579                 }
 580         }
 581         if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
 582                 if (protocol_version < 30)
 583                         write_int(f, gid);
 584                 else {
 585                         write_varint(f, gid);
 586                         if (xflags & XMIT_GROUP_NAME_FOLLOWS) {
 587                                 int len = strlen(group_name);
 588                                 write_byte(f, len);
 589                                 write_buf(f, group_name, len);
 590                         }
 591                 }
 592         }
 593         if ((preserve_devices && IS_DEVICE(mode))
 594          || (preserve_specials && IS_SPECIAL(mode))) {
 595                 if (protocol_version < 28) {
 596                         if (!(xflags & XMIT_SAME_RDEV_pre28))
 597                                 write_int(f, (int)rdev);
 598                 } else {
 599                         if (!(xflags & XMIT_SAME_RDEV_MAJOR))
 600                                 write_varint30(f, major(rdev));
 601                         if (protocol_version >= 30)
 602                                 write_varint(f, minor(rdev));
 603                         else if (xflags & XMIT_RDEV_MINOR_8_pre30)
 604                                 write_byte(f, minor(rdev));
 605                         else
 606                                 write_int(f, minor(rdev));
 607                 }
 608         }
 609
 610 #ifdef SUPPORT_LINKS
 611         if (symlink_len) {
 612                 write_varint30(f, symlink_len);
 613                 write_buf(f, symlink_name, symlink_len);
 614         }
 615 #endif
 616
 617 #ifdef SUPPORT_HARD_LINKS
 618         if (tmp_dev != 0 && protocol_version < 30) {
 619                 if (protocol_version < 26) {
 620                         /* 32-bit dev_t and ino_t */
 621                         write_int(f, (int32)dev);
 622                         write_int(f, (int32)tmp_ino);
 623                 } else {
 624                         /* 64-bit dev_t and ino_t */
 625                         if (!(xflags & XMIT_SAME_DEV_pre30))
 626                                 write_longint(f, dev);
 627                         write_longint(f, tmp_ino);
 628                 }
 629         }
 630 #endif
 631
 632         if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
 633                 const char *sum;
 634                 if (S_ISREG(mode))
 635                         sum = tmp_sum;
 636                 else {
 637                         /* Prior to 28, we sent a useless set of nulls. */
 638                         sum = empty_sum;
 639                 }
 640                 write_buf(f, sum, checksum_len);
 641         }
 642
 643 #ifdef SUPPORT_HARD_LINKS
 644   the_end:
 645 #endif
 646         strlcpy(lastname, fname, MAXPATHLEN);
 647
 648         if (S_ISREG(mode) || S_ISLNK(mode))
 649                 stats.total_size += F_LENGTH(file);
 650 }
 651
 652 static struct file_struct *recv_file_entry(struct file_list *flist,
 653                                            int xflags, int f)
 654 {
 655         static int64 modtime;
 656         static mode_t mode;
 657 #ifdef SUPPORT_HARD_LINKS
 658         static int64 dev;
 659 #endif
 660         static dev_t rdev;
 661         static uint32 rdev_major;
 662         static uid_t uid;
 663         static gid_t gid;
 664         static uint16 gid_flags;
 665         static char lastname[MAXPATHLEN], *lastdir;
 666         static int lastdir_depth, lastdir_len = -1;
 667         static unsigned int del_hier_name_len = 0;
 668         static int in_del_hier = 0;
 669         char thisname[MAXPATHLEN];
 670         unsigned int l1 = 0, l2 = 0;
 671         int alloc_len, basename_len, linkname_len;
 672         int extra_len = file_extra_cnt * EXTRA_LEN;
 673         int first_hlink_ndx = -1;
 674         int64 file_length;
 675         const char *basename;
 676         struct file_struct *file;
 677         alloc_pool_t *pool;
 678         char *bp;
 679
 680         if (xflags & XMIT_SAME_NAME)
 681                 l1 = read_byte(f);
 682
 683         if (xflags & XMIT_LONG_NAME)
 684                 l2 = read_varint30(f);
 685         else
 686                 l2 = read_byte(f);
 687
 688         if (l2 >= MAXPATHLEN - l1) {
 689                 rprintf(FERROR,
 690                         "overflow: xflags=0x%x l1=%d l2=%d lastname=%s [%s]\n",
 691                         xflags, l1, l2, lastname, who_am_i());
 692                 overflow_exit("recv_file_entry");
 693         }
 694
 695         strlcpy(thisname, lastname, l1 + 1);
 696         read_sbuf(f, &thisname[l1], l2);
 697         thisname[l1 + l2] = 0;
 698
 699         /* Abuse basename_len for a moment... */
 700         basename_len = strlcpy(lastname, thisname, MAXPATHLEN);
 701
 702 #ifdef ICONV_OPTION
 703         if (ic_recv != (iconv_t)-1) {
 704                 xbuf outbuf, inbuf;
 705
 706                 INIT_CONST_XBUF(outbuf, thisname);
 707                 INIT_XBUF(inbuf, lastname, basename_len, (size_t)-1);
 708
 709                 if (iconvbufs(ic_recv, &inbuf, &outbuf, 0) < 0) {
 710                         io_error |= IOERR_GENERAL;
 711                         rprintf(FERROR_UTF8,
 712                             "[%s] cannot convert filename: %s (%s)\n",
 713                             who_am_i(), lastname, strerror(errno));
 714                         outbuf.len = 0;
 715                 }
 716                 thisname[outbuf.len] = '\0';
 717         }
 718 #endif
 719
 720         if (*thisname)
 721                 clean_fname(thisname, 0);
 722
 723         if (sanitize_paths)
 724                 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
 725
 726         if ((basename = strrchr(thisname, '/')) != NULL) {
 727                 int len = basename++ - thisname;
 728                 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
 729                         lastdir = new_array(char, len + 1);
 730                         memcpy(lastdir, thisname, len);
 731                         lastdir[len] = '\0';
 732                         lastdir_len = len;
 733                         lastdir_depth = count_dir_elements(lastdir);
 734                 }
 735         } else
 736                 basename = thisname;
 737         basename_len = strlen(basename) + 1; /* count the '\0' */
 738
 739 #ifdef SUPPORT_HARD_LINKS
 740         if (protocol_version >= 30
 741          && BITS_SETnUNSET(xflags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
 742                 first_hlink_ndx = read_varint(f);
 743                 if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->ndx_start + flist->used) {
 744                         rprintf(FERROR,
 745                                 "hard-link reference out of range: %d (%d)\n",
 746                                 first_hlink_ndx, flist->ndx_start + flist->used);
 747                         exit_cleanup(RERR_PROTOCOL);
 748                 }
 749                 if (DEBUG_GTE(HLINK, 1)) {
 750                         rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
 751                                 who_am_i(), flist->used+flist->ndx_start, first_hlink_ndx,
 752                                 first_hlink_ndx >= flist->ndx_start ? "" : "un");
 753                 }
 754                 if (first_hlink_ndx >= flist->ndx_start) {
 755                         struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
 756                         file_length = F_LENGTH(first);
 757                         modtime = first->modtime;
 758                         mode = first->mode;
 759                         if (preserve_uid)
 760                                 uid = F_OWNER(first);
 761                         if (preserve_gid)
 762                                 gid = F_GROUP(first);
 763                         if ((preserve_devices && IS_DEVICE(mode))
 764                          || (preserve_specials && IS_SPECIAL(mode))) {
 765                                 uint32 *devp = F_RDEV_P(first);
 766                                 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
 767                                 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
 768                         }
 769                         if (preserve_links && S_ISLNK(mode))
 770                                 linkname_len = strlen(F_SYMLINK(first)) + 1;
 771                         else
 772                                 linkname_len = 0;
 773                         goto create_object;
 774                 }
 775         }
 776 #endif
 777
 778         file_length = read_varlong30(f, 3);
 779         if (!(xflags & XMIT_SAME_TIME)) {
 780                 if (protocol_version >= 30) {
 781                         modtime = read_varlong(f, 4);
 782 #if SIZEOF_TIME_T < SIZEOF_INT64
 783                         if (!am_generator && (int64)(time_t)modtime != modtime) {
 784                                 rprintf(FERROR_XFER,
 785                                     "Time value of %s truncated on receiver.\n",
 786                                     lastname);
 787                         }
 788 #endif
 789                 } else
 790                         modtime = read_int(f);
 791         }
 792         if (!(xflags & XMIT_SAME_MODE))
 793                 mode = from_wire_mode(read_int(f));
 794
 795         if (chmod_modes && !S_ISLNK(mode))
 796                 mode = tweak_mode(mode, chmod_modes);
 797
 798         if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
 799                 if (protocol_version < 30)
 800                         uid = (uid_t)read_int(f);
 801                 else {
 802                         uid = (uid_t)read_varint(f);
 803                         if (xflags & XMIT_USER_NAME_FOLLOWS)
 804                                 uid = recv_user_name(f, uid);
 805                         else if (inc_recurse && am_root && !numeric_ids)
 806                                 uid = match_uid(uid);
 807                 }
 808         }
 809         if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
 810                 if (protocol_version < 30)
 811                         gid = (gid_t)read_int(f);
 812                 else {
 813                         gid = (gid_t)read_varint(f);
 814                         gid_flags = 0;
 815                         if (xflags & XMIT_GROUP_NAME_FOLLOWS)
 816                                 gid = recv_group_name(f, gid, &gid_flags);
 817                         else if (inc_recurse && (!am_root || !numeric_ids))
 818                                 gid = match_gid(gid, &gid_flags);
 819                 }
 820         }
 821
 822         if ((preserve_devices && IS_DEVICE(mode))
 823          || (preserve_specials && IS_SPECIAL(mode))) {
 824                 if (protocol_version < 28) {
 825                         if (!(xflags & XMIT_SAME_RDEV_pre28))
 826                                 rdev = (dev_t)read_int(f);
 827                 } else {
 828                         uint32 rdev_minor;
 829                         if (!(xflags & XMIT_SAME_RDEV_MAJOR))
 830                                 rdev_major = read_varint30(f);
 831                         if (protocol_version >= 30)
 832                                 rdev_minor = read_varint(f);
 833                         else if (xflags & XMIT_RDEV_MINOR_8_pre30)
 834                                 rdev_minor = read_byte(f);
 835                         else
 836                                 rdev_minor = read_int(f);
 837                         rdev = MAKEDEV(rdev_major, rdev_minor);
 838                 }
 839                 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
 840                 file_length = 0;
 841         } else if (protocol_version < 28)
 842                 rdev = MAKEDEV(0, 0);
 843
 844 #ifdef SUPPORT_LINKS
 845         if (preserve_links && S_ISLNK(mode)) {
 846                 linkname_len = read_varint30(f) + 1; /* count the '\0' */
 847                 if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
 848                         rprintf(FERROR, "overflow: linkname_len=%d\n",
 849                                 linkname_len - 1);
 850                         overflow_exit("recv_file_entry");
 851                 }
 852 #ifdef ICONV_OPTION
 853                 /* We don't know how much extra room we need to convert
 854                  * the as-yet-unread symlink data, so let's hope that a
 855                  * double-size buffer is plenty. */
 856                 if (sender_symlink_iconv)
 857                         linkname_len *= 2;
 858 #endif
 859                 if (munge_symlinks)
 860                         linkname_len += SYMLINK_PREFIX_LEN;
 861         }
 862         else
 863 #endif
 864                 linkname_len = 0;
 865
 866 #ifdef SUPPORT_HARD_LINKS
 867   create_object:
 868         if (preserve_hard_links) {
 869                 if (protocol_version < 28 && S_ISREG(mode))
 870                         xflags |= XMIT_HLINKED;
 871                 if (xflags & XMIT_HLINKED)
 872                         extra_len += (inc_recurse+1) * EXTRA_LEN;
 873         }
 874 #endif
 875
 876 #ifdef SUPPORT_ACLS
 877         /* Directories need an extra int32 for the default ACL. */
 878         if (preserve_acls && S_ISDIR(mode))
 879                 extra_len += EXTRA_LEN;
 880 #endif
 881
 882         if (always_checksum && S_ISREG(mode))
 883                 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
 884
 885 #if SIZEOF_INT64 >= 8
 886         if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
 887                 extra_len += EXTRA_LEN;
 888 #endif
 889         if (file_length < 0) {
 890                 rprintf(FERROR, "Offset underflow: file-length is negative\n");
 891                 exit_cleanup(RERR_UNSUPPORTED);
 892         }
 893
 894         if (inc_recurse && S_ISDIR(mode)) {
 895                 if (one_file_system) {
 896                         /* Room to save the dir's device for -x */
 897                         extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
 898                 }
 899                 pool = dir_flist->file_pool;
 900         } else
 901                 pool = flist->file_pool;
 902
 903 #if EXTRA_ROUNDING > 0
 904         if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
 905                 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
 906 #endif
 907
 908         alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
 909                   + linkname_len;
 910         bp = pool_alloc(pool, alloc_len, "recv_file_entry");
 911
 912         memset(bp, 0, extra_len + FILE_STRUCT_LEN);
 913         bp += extra_len;
 914         file = (struct file_struct *)bp;
 915         bp += FILE_STRUCT_LEN;
 916
 917         memcpy(bp, basename, basename_len);
 918
 919 #ifdef SUPPORT_HARD_LINKS
 920         if (xflags & XMIT_HLINKED)
 921                 file->flags |= FLAG_HLINKED;
 922 #endif
 923         file->modtime = (time_t)modtime;
 924         file->len32 = (uint32)file_length;
 925 #if SIZEOF_INT64 >= 8
 926         if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
 927 #if SIZEOF_CAPITAL_OFF_T < 8
 928                 rprintf(FERROR, "Offset overflow: attempted 64-bit file-length\n");
 929                 exit_cleanup(RERR_UNSUPPORTED);
 930 #else
 931                 file->flags |= FLAG_LENGTH64;
 932                 OPT_EXTRA(file, 0)->unum = (uint32)(file_length >> 32);
 933 #endif
 934         }
 935 #endif
 936         file->mode = mode;
 937         if (preserve_uid)
 938                 F_OWNER(file) = uid;
 939         if (preserve_gid) {
 940                 F_GROUP(file) = gid;
 941                 file->flags |= gid_flags;
 942         }
 943         if (unsort_ndx)
 944                 F_NDX(file) = flist->used + flist->ndx_start;
 945
 946         if (basename != thisname) {
 947                 file->dirname = lastdir;
 948                 F_DEPTH(file) = lastdir_depth + 1;
 949         } else
 950                 F_DEPTH(file) = 1;
 951
 952         if (S_ISDIR(mode)) {
 953                 if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
 954                         F_DEPTH(file)--;
 955                 if (protocol_version >= 30) {
 956                         if (!(xflags & XMIT_NO_CONTENT_DIR)) {
 957                                 if (xflags & XMIT_TOP_DIR)
 958                                         file->flags |= FLAG_TOP_DIR;
 959                                 file->flags |= FLAG_CONTENT_DIR;
 960                         } else if (xflags & XMIT_TOP_DIR)
 961                                 file->flags |= FLAG_IMPLIED_DIR;
 962                 } else if (xflags & XMIT_TOP_DIR) {
 963                         in_del_hier = recurse;
 964                         del_hier_name_len = F_DEPTH(file) == 0 ? 0 : l1 + l2;
 965                         if (relative_paths && del_hier_name_len > 2
 966                             && lastname[del_hier_name_len-1] == '.'
 967                             && lastname[del_hier_name_len-2] == '/')
 968                                 del_hier_name_len -= 2;
 969                         file->flags |= FLAG_TOP_DIR | FLAG_CONTENT_DIR;
 970                 } else if (in_del_hier) {
 971                         if (!relative_paths || !del_hier_name_len
 972                          || (l1 >= del_hier_name_len
 973                           && lastname[del_hier_name_len] == '/'))
 974                                 file->flags |= FLAG_CONTENT_DIR;
 975                         else
 976                                 in_del_hier = 0;
 977                 }
 978         }
 979
 980         if ((preserve_devices && IS_DEVICE(mode))
 981          || (preserve_specials && IS_SPECIAL(mode))) {
 982                 uint32 *devp = F_RDEV_P(file);
 983                 DEV_MAJOR(devp) = major(rdev);
 984                 DEV_MINOR(devp) = minor(rdev);
 985         }
 986
 987 #ifdef SUPPORT_LINKS
 988         if (linkname_len) {
 989                 bp += basename_len;
 990                 if (first_hlink_ndx >= flist->ndx_start) {
 991                         struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
 992                         memcpy(bp, F_SYMLINK(first), linkname_len);
 993                 } else {
 994                         if (munge_symlinks) {
 995                                 strlcpy(bp, SYMLINK_PREFIX, linkname_len);
 996                                 bp += SYMLINK_PREFIX_LEN;
 997                                 linkname_len -= SYMLINK_PREFIX_LEN;
 998                         }
 999 #ifdef ICONV_OPTION
1000                         if (sender_symlink_iconv) {
1001                                 xbuf outbuf, inbuf;
1002
1003                                 alloc_len = linkname_len;
1004                                 linkname_len /= 2;
1005
1006                                 /* Read the symlink data into the end of our double-sized
1007                                  * buffer and then convert it into the right spot. */
1008                                 INIT_XBUF(inbuf, bp + alloc_len - linkname_len,
1009                                           linkname_len - 1, (size_t)-1);
1010                                 read_sbuf(f, inbuf.buf, inbuf.len);
1011                                 INIT_XBUF(outbuf, bp, 0, alloc_len);
1012
1013                                 if (iconvbufs(ic_recv, &inbuf, &outbuf, 0) < 0) {
1014                                         io_error |= IOERR_GENERAL;
1015                                         rprintf(FERROR_XFER,
1016                                             "[%s] cannot convert symlink data for: %s (%s)\n",
1017                                             who_am_i(), full_fname(thisname), strerror(errno));
1018                                         bp = (char*)file->basename;
1019                                         *bp++ = '\0';
1020                                         outbuf.len = 0;
1021                                 }
1022                                 bp[outbuf.len] = '\0';
1023                         } else
1024 #endif
1025                                 read_sbuf(f, bp, linkname_len - 1);
1026                         if (sanitize_paths && !munge_symlinks && *bp)
1027                                 sanitize_path(bp, bp, "", lastdir_depth, SP_DEFAULT);
1028                 }
1029         }
1030 #endif
1031
1032 #ifdef SUPPORT_HARD_LINKS
1033         if (preserve_hard_links && xflags & XMIT_HLINKED) {
1034                 if (protocol_version >= 30) {
1035                         if (xflags & XMIT_HLINK_FIRST) {
1036                                 F_HL_GNUM(file) = flist->ndx_start + flist->used;
1037                         } else
1038                                 F_HL_GNUM(file) = first_hlink_ndx;
1039                 } else {
1040                         static int32 cnt = 0;
1041                         struct ht_int64_node *np;
1042                         int64 ino;
1043                         int32 ndx;
1044                         if (protocol_version < 26) {
1045                                 dev = read_int(f);
1046                                 ino = read_int(f);
1047                         } else {
1048                                 if (!(xflags & XMIT_SAME_DEV_pre30))
1049                                         dev = read_longint(f);
1050                                 ino = read_longint(f);
1051                         }
1052                         np = idev_find(dev, ino);
1053                         ndx = (int32)(long)np->data - 1;
1054                         if (ndx < 0) {
1055                                 ndx = cnt++;
1056                                 np->data = (void*)(long)cnt;
1057                         }
1058                         F_HL_GNUM(file) = ndx;
1059                 }
1060         }
1061 #endif
1062
1063         if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
1064                 if (S_ISREG(mode))
1065                         bp = F_SUM(file);
1066                 else {
1067                         /* Prior to 28, we get a useless set of nulls. */
1068                         bp = tmp_sum;
1069                 }
1070                 if (first_hlink_ndx >= flist->ndx_start) {
1071                         struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1072                         memcpy(bp, F_SUM(first), checksum_len);
1073                 } else
1074                         read_buf(f, bp, checksum_len);
1075         }
1076
1077 #ifdef SUPPORT_ACLS
1078         if (preserve_acls && !S_ISLNK(mode))
1079                 receive_acl(file, f);
1080 #endif
1081 #ifdef SUPPORT_XATTRS
1082         if (preserve_xattrs)
1083                 receive_xattr(file, f );
1084 #endif
1085
1086         if (S_ISREG(mode) || S_ISLNK(mode))
1087                 stats.total_size += file_length;
1088
1089         return file;
1090 }
1091
1092 /* Create a file_struct for a named file by reading its stat() information
1093  * and performing extensive checks against global options.
1094  *
1095  * Returns a pointer to the new file struct, or NULL if there was an error
1096  * or this file should be excluded.
1097  *
1098  * Note: Any error (here or in send_file_name) that results in the omission of
1099  * an existent source file from the file list should set
1100  * "io_error |= IOERR_GENERAL" to avoid deletion of the file from the
1101  * destination if --delete is on. */
1102 struct file_struct *make_file(const char *fname, struct file_list *flist,
1103                               STRUCT_STAT *stp, int flags, int filter_level)
1104 {
1105         static char *lastdir;
1106         static int lastdir_len = -1;
1107         struct file_struct *file;
1108         char thisname[MAXPATHLEN];
1109         char linkname[MAXPATHLEN];
1110         int alloc_len, basename_len, linkname_len;
1111         int extra_len = file_extra_cnt * EXTRA_LEN;
1112         const char *basename;
1113         alloc_pool_t *pool;
1114         STRUCT_STAT st;
1115         char *bp;
1116
1117         if (strlcpy(thisname, fname, sizeof thisname) >= sizeof thisname) {
1118                 io_error |= IOERR_GENERAL;
1119                 rprintf(FERROR_XFER, "skipping overly long name: %s\n", fname);
1120                 return NULL;
1121         }
1122         clean_fname(thisname, 0);
1123         if (sanitize_paths)
1124                 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
1125
1126         if (stp && S_ISDIR(stp->st_mode)) {
1127                 st = *stp; /* Needed for "symlink/." with --relative. */
1128                 *linkname = '\0'; /* make IBM code checker happy */
1129         } else if (readlink_stat(thisname, &st, linkname) != 0) {
1130                 int save_errno = errno;
1131                 /* See if file is excluded before reporting an error. */
1132                 if (filter_level != NO_FILTERS
1133                  && (is_excluded(thisname, 0, filter_level)
1134                   || is_excluded(thisname, 1, filter_level))) {
1135                         if (ignore_perishable && save_errno != ENOENT)
1136                                 non_perishable_cnt++;
1137                         return NULL;
1138                 }
1139                 if (save_errno == ENOENT) {
1140 #ifdef SUPPORT_LINKS
1141                         /* When our options tell us to follow a symlink that
1142                          * points nowhere, tell the user about the symlink
1143                          * instead of giving a "vanished" message.  We only
1144                          * dereference a symlink if one of the --copy*links
1145                          * options was specified, so there's no need for the
1146                          * extra lstat() if one of these options isn't on. */
1147                         if ((copy_links || copy_unsafe_links || copy_dirlinks)
1148                          && x_lstat(thisname, &st, NULL) == 0
1149                          && S_ISLNK(st.st_mode)) {
1150                                 io_error |= IOERR_GENERAL;
1151                                 rprintf(FERROR_XFER, "symlink has no referent: %s\n",
1152                                         full_fname(thisname));
1153                         } else
1154 #endif
1155                         {
1156                                 enum logcode c = am_daemon && protocol_version < 28
1157                                                ? FERROR : FWARNING;
1158                                 io_error |= IOERR_VANISHED;
1159                                 rprintf(c, "file has vanished: %s\n",
1160                                         full_fname(thisname));
1161                         }
1162                 } else {
1163                         io_error |= IOERR_GENERAL;
1164                         rsyserr(FERROR_XFER, save_errno, "readlink_stat(%s) failed",
1165                                 full_fname(thisname));
1166                 }
1167                 return NULL;
1168         }
1169
1170         if (filter_level == NO_FILTERS)
1171                 goto skip_filters;
1172
1173         if (S_ISDIR(st.st_mode)) {
1174                 if (!xfer_dirs) {
1175                         rprintf(FINFO, "skipping directory %s\n", thisname);
1176                         return NULL;
1177                 }
1178                 /* -x only affects dirs because we need to avoid recursing
1179                  * into a mount-point directory, not to avoid copying a
1180                  * symlinked file if -L (or similar) was specified. */
1181                 if (one_file_system && st.st_dev != filesystem_dev
1182                  && BITS_SETnUNSET(flags, FLAG_CONTENT_DIR, FLAG_TOP_DIR)) {
1183                         if (one_file_system > 1) {
1184                                 if (INFO_GTE(MOUNT, 1)) {
1185                                         rprintf(FINFO,
1186                                             "[%s] skipping mount-point dir %s\n",
1187                                             who_am_i(), thisname);
1188                                 }
1189                                 return NULL;
1190                         }
1191                         flags |= FLAG_MOUNT_DIR;
1192                         flags &= ~FLAG_CONTENT_DIR;
1193                 }
1194         } else
1195                 flags &= ~FLAG_CONTENT_DIR;
1196
1197         if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
1198                 if (ignore_perishable)
1199                         non_perishable_cnt++;
1200                 return NULL;
1201         }
1202
1203         if (lp_ignore_nonreadable(module_id)) {
1204 #ifdef SUPPORT_LINKS
1205                 if (!S_ISLNK(st.st_mode))
1206 #endif
1207                         if (access(thisname, R_OK) != 0)
1208                                 return NULL;
1209         }
1210
1211   skip_filters:
1212
1213         /* Only divert a directory in the main transfer. */
1214         if (flist) {
1215                 if (flist->prev && S_ISDIR(st.st_mode)
1216                  && flags & FLAG_DIVERT_DIRS) {
1217                         /* Room for parent/sibling/next-child info. */
1218                         extra_len += DIRNODE_EXTRA_CNT * EXTRA_LEN;
1219                         if (relative_paths)
1220                                 extra_len += PTR_EXTRA_CNT * EXTRA_LEN;
1221                         pool = dir_flist->file_pool;
1222                 } else
1223                         pool = flist->file_pool;
1224         } else {
1225 #ifdef SUPPORT_ACLS
1226                 /* Directories need an extra int32 for the default ACL. */
1227                 if (preserve_acls && S_ISDIR(st.st_mode))
1228                         extra_len += EXTRA_LEN;
1229 #endif
1230                 pool = NULL;
1231         }
1232
1233         if (DEBUG_GTE(FLIST, 2)) {
1234                 rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
1235                         who_am_i(), thisname, filter_level);
1236         }
1237
1238         if ((basename = strrchr(thisname, '/')) != NULL) {
1239                 int len = basename++ - thisname;
1240                 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
1241                         lastdir = new_array(char, len + 1);
1242                         memcpy(lastdir, thisname, len);
1243                         lastdir[len] = '\0';
1244                         lastdir_len = len;
1245                 }
1246         } else
1247                 basename = thisname;
1248         basename_len = strlen(basename) + 1; /* count the '\0' */
1249
1250 #ifdef SUPPORT_LINKS
1251         linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
1252 #else
1253         linkname_len = 0;
1254 #endif
1255
1256 #if SIZEOF_CAPITAL_OFF_T >= 8
1257         if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
1258                 extra_len += EXTRA_LEN;
1259 #endif
1260
1261         if (always_checksum && am_sender && S_ISREG(st.st_mode)) {
1262                 file_checksum(thisname, tmp_sum, st.st_size);
1263                 if (sender_keeps_checksum)
1264                         extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
1265         }
1266
1267 #if EXTRA_ROUNDING > 0
1268         if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
1269                 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
1270 #endif
1271
1272         alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
1273                   + linkname_len;
1274         if (pool)
1275                 bp = pool_alloc(pool, alloc_len, "make_file");
1276         else {
1277                 if (!(bp = new_array(char, alloc_len)))
1278                         out_of_memory("make_file");
1279         }
1280
1281         memset(bp, 0, extra_len + FILE_STRUCT_LEN);
1282         bp += extra_len;
1283         file = (struct file_struct *)bp;
1284         bp += FILE_STRUCT_LEN;
1285
1286         memcpy(bp, basename, basename_len);
1287
1288 #ifdef SUPPORT_HARD_LINKS
1289         if (preserve_hard_links && flist && flist->prev) {
1290                 if (protocol_version >= 28
1291                  ? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
1292                  : S_ISREG(st.st_mode)) {
1293                         tmp_dev = (int64)st.st_dev + 1;
1294                         tmp_ino = (int64)st.st_ino;
1295                 } else
1296                         tmp_dev = 0;
1297         }
1298 #endif
1299
1300 #ifdef HAVE_STRUCT_STAT_ST_RDEV
1301         if (IS_DEVICE(st.st_mode) || IS_SPECIAL(st.st_mode)) {
1302                 tmp_rdev = st.st_rdev;
1303                 st.st_size = 0;
1304         }
1305 #endif
1306
1307         file->flags = flags;
1308         file->modtime = st.st_mtime;
1309         file->len32 = (uint32)st.st_size;
1310 #if SIZEOF_CAPITAL_OFF_T >= 8
1311         if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
1312                 file->flags |= FLAG_LENGTH64;
1313                 OPT_EXTRA(file, 0)->unum = (uint32)(st.st_size >> 32);
1314         }
1315 #endif
1316         file->mode = st.st_mode;
1317         if (uid_ndx) /* Check uid_ndx instead of preserve_uid for del support */
1318                 F_OWNER(file) = st.st_uid;
1319         if (gid_ndx) /* Check gid_ndx instead of preserve_gid for del support */
1320                 F_GROUP(file) = st.st_gid;
1321
1322         if (basename != thisname)
1323                 file->dirname = lastdir;
1324
1325 #ifdef SUPPORT_LINKS
1326         if (linkname_len)
1327                 memcpy(bp + basename_len, linkname, linkname_len);
1328 #endif
1329
1330         if (am_sender)
1331                 F_PATHNAME(file) = pathname;
1332         else if (!pool)
1333                 F_DEPTH(file) = extra_len / EXTRA_LEN;
1334
1335         /* This code is only used by the receiver when it is building
1336          * a list of files for a delete pass. */
1337         if (keep_dirlinks && linkname_len && flist) {
1338                 STRUCT_STAT st2;
1339                 int save_mode = file->mode;
1340                 file->mode = S_IFDIR; /* Find a directory with our name. */
1341                 if (flist_find(dir_flist, file) >= 0
1342                  && x_stat(thisname, &st2, NULL) == 0 && S_ISDIR(st2.st_mode)) {
1343                         file->modtime = st2.st_mtime;
1344                         file->len32 = 0;
1345                         file->mode = st2.st_mode;
1346                         if (uid_ndx)
1347                                 F_OWNER(file) = st2.st_uid;
1348                         if (gid_ndx)
1349                                 F_GROUP(file) = st2.st_gid;
1350                 } else
1351                         file->mode = save_mode;
1352         }
1353
1354         if (basename_len == 0+1) {
1355                 if (!pool)
1356                         unmake_file(file);
1357                 return NULL;
1358         }
1359
1360         if (sender_keeps_checksum && S_ISREG(st.st_mode))
1361                 memcpy(F_SUM(file), tmp_sum, checksum_len);
1362
1363         if (unsort_ndx)
1364                 F_NDX(file) = stats.num_dirs;
1365
1366         return file;
1367 }
1368
1369 /* Only called for temporary file_struct entries created by make_file(). */
1370 void unmake_file(struct file_struct *file)
1371 {
1372         free(REQ_EXTRA(file, F_DEPTH(file)));
1373 }
1374
1375 static struct file_struct *send_file_name(int f, struct file_list *flist,
1376                                           const char *fname, STRUCT_STAT *stp,
1377                                           int flags, int filter_level)
1378 {
1379         struct file_struct *file;
1380
1381         file = make_file(fname, flist, stp, flags, filter_level);
1382         if (!file)
1383                 return NULL;
1384
1385         if (chmod_modes && !S_ISLNK(file->mode))
1386                 file->mode = tweak_mode(file->mode, chmod_modes);
1387
1388         if (f >= 0) {
1389                 char fbuf[MAXPATHLEN];
1390 #ifdef SUPPORT_LINKS
1391                 const char *symlink_name;
1392                 int symlink_len;
1393 #ifdef ICONV_OPTION
1394                 char symlink_buf[MAXPATHLEN];
1395 #endif
1396 #endif
1397 #if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
1398                 stat_x sx;
1399 #endif
1400
1401 #ifdef SUPPORT_LINKS
1402                 if (preserve_links && S_ISLNK(file->mode)) {
1403                         symlink_name = F_SYMLINK(file);
1404                         symlink_len = strlen(symlink_name);
1405                 } else {
1406                         symlink_name = NULL;
1407                         symlink_len = 0;
1408                 }
1409 #endif
1410
1411 #ifdef ICONV_OPTION
1412                 if (ic_send != (iconv_t)-1) {
1413                         xbuf outbuf, inbuf;
1414
1415                         INIT_CONST_XBUF(outbuf, fbuf);
1416
1417                         if (file->dirname) {
1418                                 INIT_XBUF_STRLEN(inbuf, (char*)file->dirname);
1419                                 outbuf.size -= 2; /* Reserve room for '/' & 1 more char. */
1420                                 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0)
1421                                         goto convert_error;
1422                                 outbuf.size += 2;
1423                                 fbuf[outbuf.len++] = '/';
1424                         }
1425
1426                         INIT_XBUF_STRLEN(inbuf, (char*)file->basename);
1427                         if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0) {
1428                           convert_error:
1429                                 io_error |= IOERR_GENERAL;
1430                                 rprintf(FERROR_XFER,
1431                                     "[%s] cannot convert filename: %s (%s)\n",
1432                                     who_am_i(), f_name(file, fbuf), strerror(errno));
1433                                 return NULL;
1434                         }
1435                         fbuf[outbuf.len] = '\0';
1436
1437 #ifdef SUPPORT_LINKS
1438                         if (symlink_len && sender_symlink_iconv) {
1439                                 INIT_XBUF(inbuf, (char*)symlink_name, symlink_len, (size_t)-1);
1440                                 INIT_CONST_XBUF(outbuf, symlink_buf);
1441                                 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0) {
1442                                         io_error |= IOERR_GENERAL;
1443                                         f_name(file, fbuf);
1444                                         rprintf(FERROR_XFER,
1445                                             "[%s] cannot convert symlink data for: %s (%s)\n",
1446                                             who_am_i(), full_fname(fbuf), strerror(errno));
1447                                         return NULL;
1448                                 }
1449                                 symlink_buf[outbuf.len] = '\0';
1450
1451                                 symlink_name = symlink_buf;
1452                                 symlink_len = outbuf.len;
1453                         }
1454 #endif
1455                 } else
1456 #endif
1457                         f_name(file, fbuf);
1458
1459 #ifdef SUPPORT_ACLS
1460                 if (preserve_acls && !S_ISLNK(file->mode)) {
1461                         sx.st.st_mode = file->mode;
1462                         sx.acc_acl = sx.def_acl = NULL;
1463                         if (get_acl(fname, &sx) < 0) {
1464                                 io_error |= IOERR_GENERAL;
1465                                 return NULL;
1466                         }
1467                 }
1468 #endif
1469 #ifdef SUPPORT_XATTRS
1470                 if (preserve_xattrs) {
1471                         sx.xattr = NULL;
1472                         if (get_xattr(fname, &sx) < 0) {
1473                                 io_error |= IOERR_GENERAL;
1474                                 return NULL;
1475                         }
1476                 }
1477 #endif
1478
1479                 send_file_entry(f, fbuf, file,
1480 #ifdef SUPPORT_LINKS
1481                                 symlink_name, symlink_len,
1482 #endif
1483                                 flist->used, flist->ndx_start);
1484
1485 #ifdef SUPPORT_ACLS
1486                 if (preserve_acls && !S_ISLNK(file->mode)) {
1487                         send_acl(&sx, f);
1488                         free_acl(&sx);
1489                 }
1490 #endif
1491 #ifdef SUPPORT_XATTRS
1492                 if (preserve_xattrs) {
1493                         F_XATTR(file) = send_xattr(&sx, f);
1494                         free_xattr(&sx);
1495                 }
1496 #endif
1497         }
1498
1499         maybe_emit_filelist_progress(flist->used + flist_count_offset);
1500
1501         flist_expand(flist, 1);
1502         flist->files[flist->used++] = file;
1503
1504         return file;
1505 }
1506
1507 static void send_if_directory(int f, struct file_list *flist,
1508                               struct file_struct *file,
1509                               char *fbuf, unsigned int ol,
1510                               int flags)
1511 {
1512         char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
1513
1514         if (S_ISDIR(file->mode)
1515             && !(file->flags & FLAG_MOUNT_DIR) && f_name(file, fbuf)) {
1516                 void *save_filters;
1517                 unsigned int len = strlen(fbuf);
1518                 if (len > 1 && fbuf[len-1] == '/')
1519                         fbuf[--len] = '\0';
1520                 if (len >= MAXPATHLEN - 1) {
1521                         io_error |= IOERR_GENERAL;
1522                         rprintf(FERROR_XFER, "skipping long-named directory: %s\n",
1523                                 full_fname(fbuf));
1524                         return;
1525                 }
1526                 save_filters = push_local_filters(fbuf, len);
1527                 send_directory(f, flist, fbuf, len, flags);
1528                 pop_local_filters(save_filters);
1529                 fbuf[ol] = '\0';
1530                 if (is_dot_dir)
1531                         fbuf[ol-1] = '.';
1532         }
1533 }
1534
1535 static int file_compare(const void *file1, const void *file2)
1536 {
1537         return f_name_cmp(*(struct file_struct **)file1,
1538                           *(struct file_struct **)file2);
1539 }
1540
1541 /* The guts of a merge-sort algorithm.  This was derived from the glibc
1542  * version, but I (Wayne) changed the merge code to do less copying and
1543  * to require only half the amount of temporary memory. */
1544 static void fsort_tmp(struct file_struct **fp, size_t num,
1545                       struct file_struct **tmp)
1546 {
1547         struct file_struct **f1, **f2, **t;
1548         size_t n1, n2;
1549
1550         n1 = num / 2;
1551         n2 = num - n1;
1552         f1 = fp;
1553         f2 = fp + n1;
1554
1555         if (n1 > 1)
1556                 fsort_tmp(f1, n1, tmp);
1557         if (n2 > 1)
1558                 fsort_tmp(f2, n2, tmp);
1559
1560         while (f_name_cmp(*f1, *f2) <= 0) {
1561                 if (!--n1)
1562                         return;
1563                 f1++;
1564         }
1565
1566         t = tmp;
1567         memcpy(t, f1, n1 * PTR_SIZE);
1568
1569         *f1++ = *f2++, n2--;
1570
1571         while (n1 > 0 && n2 > 0) {
1572                 if (f_name_cmp(*t, *f2) <= 0)
1573                         *f1++ = *t++, n1--;
1574                 else
1575                         *f1++ = *f2++, n2--;
1576         }
1577
1578         if (n1 > 0)
1579                 memcpy(f1, t, n1 * PTR_SIZE);
1580 }
1581
1582 /* This file-struct sorting routine makes sure that any identical names in
1583  * the file list stay in the same order as they were in the original list.
1584  * This is particularly vital in inc_recurse mode where we expect a sort
1585  * on the flist to match the exact order of a sort on the dir_flist. */
1586 static void fsort(struct file_struct **fp, size_t num)
1587 {
1588         if (num <= 1)
1589                 return;
1590
1591         if (use_qsort)
1592                 qsort(fp, num, PTR_SIZE, file_compare);
1593         else {
1594                 struct file_struct **tmp = new_array(struct file_struct *,
1595                                                      (num+1) / 2);
1596                 fsort_tmp(fp, num, tmp);
1597                 free(tmp);
1598         }
1599 }
1600
1601 /* We take an entire set of sibling dirs from the sorted flist and link them
1602  * into the tree, setting the appropriate parent/child/sibling pointers. */
1603 static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist,
1604                              int dir_cnt)
1605 {
1606         int i;
1607         int32 *dp = NULL;
1608         int32 *parent_dp = parent_ndx < 0 ? NULL
1609                          : F_DIR_NODE_P(dir_flist->sorted[parent_ndx]);
1610
1611         flist_expand(dir_flist, dir_cnt);
1612         dir_flist->sorted = dir_flist->files;
1613
1614         for (i = 0; dir_cnt; i++) {
1615                 struct file_struct *file = from_flist->sorted[i];
1616
1617                 if (!S_ISDIR(file->mode))
1618                         continue;
1619
1620                 dir_flist->files[dir_flist->used++] = file;
1621                 dir_cnt--;
1622
1623                 if (file->basename[0] == '.' && file->basename[1] == '\0')
1624                         continue;
1625
1626                 if (dp)
1627                         DIR_NEXT_SIBLING(dp) = dir_flist->used - 1;
1628                 else if (parent_dp)
1629                         DIR_FIRST_CHILD(parent_dp) = dir_flist->used - 1;
1630                 else
1631                         send_dir_ndx = dir_flist->used - 1;
1632
1633                 dp = F_DIR_NODE_P(file);
1634                 DIR_PARENT(dp) = parent_ndx;
1635                 DIR_FIRST_CHILD(dp) = -1;
1636         }
1637         if (dp)
1638                 DIR_NEXT_SIBLING(dp) = -1;
1639 }
1640
1641 /* This function is normally called by the sender, but the receiving side also
1642  * calls it from get_dirlist() with f set to -1 so that we just construct the
1643  * file list in memory without sending it over the wire.  Also, get_dirlist()
1644  * might call this with f set to -2, which also indicates that local filter
1645  * rules should be ignored. */
1646 static void send_directory(int f, struct file_list *flist, char *fbuf, int len,
1647                            int flags)
1648 {
1649         struct dirent *di;
1650         unsigned remainder;
1651         char *p;
1652         DIR *d;
1653         int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
1654         int start = flist->used;
1655         int filter_level = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
1656
1657         assert(flist != NULL);
1658
1659         if (!(d = opendir(fbuf))) {
1660                 io_error |= IOERR_GENERAL;
1661                 rsyserr(FERROR_XFER, errno, "opendir %s failed", full_fname(fbuf));
1662                 return;
1663         }
1664
1665         p = fbuf + len;
1666         if (len != 1 || *fbuf != '/')
1667                 *p++ = '/';
1668         *p = '\0';
1669         remainder = MAXPATHLEN - (p - fbuf);
1670
1671         for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1672                 char *dname = d_name(di);
1673                 if (dname[0] == '.' && (dname[1] == '\0'
1674                     || (dname[1] == '.' && dname[2] == '\0')))
1675                         continue;
1676                 if (strlcpy(p, dname, remainder) >= remainder) {
1677                         io_error |= IOERR_GENERAL;
1678                         rprintf(FERROR_XFER,
1679                                 "cannot send long-named file %s\n",
1680                                 full_fname(fbuf));
1681                         continue;
1682                 }
1683                 if (dname[0] == '\0') {
1684                         io_error |= IOERR_GENERAL;
1685                         rprintf(FERROR_XFER,
1686                                 "cannot send file with empty name in %s\n",
1687                                 full_fname(fbuf));
1688                         continue;
1689                 }
1690
1691                 send_file_name(f, flist, fbuf, NULL, flags, filter_level);
1692         }
1693
1694         fbuf[len] = '\0';
1695
1696         if (errno) {
1697                 io_error |= IOERR_GENERAL;
1698                 rsyserr(FERROR_XFER, errno, "readdir(%s)", full_fname(fbuf));
1699         }
1700
1701         closedir(d);
1702
1703         if (f >= 0 && recurse && !divert_dirs) {
1704                 int i, end = flist->used - 1;
1705                 /* send_if_directory() bumps flist->used, so use "end". */
1706                 for (i = start; i <= end; i++)
1707                         send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
1708         }
1709 }
1710
1711 static void send_implied_dirs(int f, struct file_list *flist, char *fname,
1712                               char *start, char *limit, int flags, char name_type)
1713 {
1714         static char lastpath[MAXPATHLEN] = "";
1715         static int lastpath_len = 0;
1716         static struct file_struct *lastpath_struct = NULL;
1717         struct file_struct *file;
1718         item_list *relname_list;
1719         relnamecache **rnpp;
1720         int len, need_new_dir, depth = 0;
1721         struct filter_list_struct save_filter_list = filter_list;
1722
1723         flags = (flags | FLAG_IMPLIED_DIR) & ~(FLAG_TOP_DIR | FLAG_CONTENT_DIR);
1724         filter_list.head = filter_list.tail = NULL; /* Don't filter implied dirs. */
1725
1726         if (inc_recurse) {
1727                 if (lastpath_struct && F_PATHNAME(lastpath_struct) == pathname
1728                  && lastpath_len == limit - fname
1729                  && strncmp(lastpath, fname, lastpath_len) == 0)
1730                         need_new_dir = 0;
1731                 else
1732                         need_new_dir = 1;
1733         } else {
1734                 char *tp = fname, *lp = lastpath;
1735                 /* Skip any initial directories in our path that we
1736                  * have in common with lastpath. */
1737                 assert(start == fname);
1738                 for ( ; ; tp++, lp++) {
1739                         if (tp == limit) {
1740                                 if (*lp == '/' || *lp == '\0')
1741                                         goto done;
1742                                 break;
1743                         }
1744                         if (*lp != *tp)
1745                                 break;
1746                         if (*tp == '/') {
1747                                 start = tp;
1748                                 depth++;
1749                         }
1750                 }
1751                 need_new_dir = 1;
1752         }
1753
1754         if (need_new_dir) {
1755                 int save_copy_links = copy_links;
1756                 int save_xfer_dirs = xfer_dirs;
1757                 char *slash;
1758
1759                 copy_links = xfer_dirs = 1;
1760
1761                 *limit = '\0';
1762
1763                 for (slash = start; (slash = strchr(slash+1, '/')) != NULL; ) {
1764                         *slash = '\0';
1765                         file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1766                         depth++;
1767                         if (!inc_recurse && file && S_ISDIR(file->mode))
1768                                 change_local_filter_dir(fname, strlen(fname), depth);
1769                         *slash = '/';
1770                 }
1771
1772                 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1773                 if (inc_recurse) {
1774                         if (file && !S_ISDIR(file->mode))
1775                                 file = NULL;
1776                         lastpath_struct = file;
1777                 } else if (file && S_ISDIR(file->mode))
1778                         change_local_filter_dir(fname, strlen(fname), ++depth);
1779
1780                 strlcpy(lastpath, fname, sizeof lastpath);
1781                 lastpath_len = limit - fname;
1782
1783                 *limit = '/';
1784
1785                 copy_links = save_copy_links;
1786                 xfer_dirs = save_xfer_dirs;
1787
1788                 if (!inc_recurse)
1789                         goto done;
1790         }
1791
1792         if (!lastpath_struct)
1793                 goto done; /* dir must have vanished */
1794
1795         len = strlen(limit+1);
1796         memcpy(&relname_list, F_DIR_RELNAMES_P(lastpath_struct), sizeof relname_list);
1797         if (!relname_list) {
1798                 if (!(relname_list = new0(item_list)))
1799                         out_of_memory("send_implied_dirs");
1800                 memcpy(F_DIR_RELNAMES_P(lastpath_struct), &relname_list, sizeof relname_list);
1801         }
1802         rnpp = EXPAND_ITEM_LIST(relname_list, relnamecache *, 32);
1803         if (!(*rnpp = (relnamecache*)new_array(char, sizeof (relnamecache) + len)))
1804                 out_of_memory("send_implied_dirs");
1805         (*rnpp)->name_type = name_type;
1806         strlcpy((*rnpp)->fname, limit+1, len + 1);
1807
1808 done:
1809         filter_list = save_filter_list;
1810 }
1811
1812 static void send1extra(int f, struct file_struct *file, struct file_list *flist)
1813 {
1814         char fbuf[MAXPATHLEN];
1815         item_list *relname_list;
1816         int len, dlen, flags = FLAG_DIVERT_DIRS | FLAG_CONTENT_DIR;
1817         size_t j;
1818
1819         f_name(file, fbuf);
1820         dlen = strlen(fbuf);
1821
1822         if (!change_pathname(file, NULL, 0))
1823                 exit_cleanup(RERR_FILESELECT);
1824
1825         change_local_filter_dir(fbuf, dlen, send_dir_depth);
1826
1827         if (file->flags & FLAG_CONTENT_DIR) {
1828                 if (one_file_system) {
1829                         STRUCT_STAT st;
1830                         if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
1831                                 io_error |= IOERR_GENERAL;
1832                                 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
1833                                         full_fname(fbuf));
1834                                 return;
1835                         }
1836                         filesystem_dev = st.st_dev;
1837                 }
1838                 send_directory(f, flist, fbuf, dlen, flags);
1839         }
1840
1841         if (!relative_paths)
1842                 return;
1843
1844         memcpy(&relname_list, F_DIR_RELNAMES_P(file), sizeof relname_list);
1845         if (!relname_list)
1846                 return;
1847
1848         for (j = 0; j < relname_list->count; j++) {
1849                 char *slash;
1850                 relnamecache *rnp = ((relnamecache**)relname_list->items)[j];
1851                 char name_type = rnp->name_type;
1852
1853                 fbuf[dlen] = '/';
1854                 len = strlcpy(fbuf + dlen + 1, rnp->fname, sizeof fbuf - dlen - 1);
1855                 free(rnp);
1856                 if (len >= (int)sizeof fbuf)
1857                         continue; /* Impossible... */
1858
1859                 slash = strchr(fbuf+dlen+1, '/');
1860                 if (slash) {
1861                         send_implied_dirs(f, flist, fbuf, fbuf+dlen+1, slash, flags, name_type);
1862                         continue;
1863                 }
1864
1865                 if (name_type != NORMAL_NAME) {
1866                         STRUCT_STAT st;
1867                         if (link_stat(fbuf, &st, 1) != 0) {
1868                                 io_error |= IOERR_GENERAL;
1869                                 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
1870                                         full_fname(fbuf));
1871                                 continue;
1872                         }
1873                         send_file_name(f, flist, fbuf, &st, FLAG_TOP_DIR | flags, ALL_FILTERS);
1874                 } else
1875                         send_file_name(f, flist, fbuf, NULL, FLAG_TOP_DIR | flags, ALL_FILTERS);
1876         }
1877
1878         free(relname_list);
1879 }
1880
1881 void send_extra_file_list(int f, int at_least)
1882 {
1883         struct file_list *flist;
1884         int64 start_write;
1885         uint16 prev_flags;
1886         int old_cnt, save_io_error = io_error;
1887
1888         if (flist_eof)
1889                 return;
1890
1891         /* Keep sending data until we have the requested number of
1892          * files in the upcoming file-lists. */
1893         old_cnt = cur_flist->used;
1894         for (flist = first_flist; flist != cur_flist; flist = flist->next)
1895                 old_cnt += flist->used;
1896         while (file_total - old_cnt < at_least) {
1897                 struct file_struct *file = dir_flist->sorted[send_dir_ndx];
1898                 int dir_ndx, dstart = stats.num_dirs;
1899                 const char *pathname = F_PATHNAME(file);
1900                 int32 *dp;
1901
1902                 flist = flist_new(0, "send_extra_file_list");
1903                 start_write = stats.total_written;
1904
1905                 if (unsort_ndx)
1906                         dir_ndx = F_NDX(file);
1907                 else
1908                         dir_ndx = send_dir_ndx;
1909                 write_ndx(f, NDX_FLIST_OFFSET - dir_ndx);
1910                 flist->parent_ndx = dir_ndx;
1911
1912                 send1extra(f, file, flist);
1913                 prev_flags = file->flags;
1914                 dp = F_DIR_NODE_P(file);
1915
1916                 /* If there are any duplicate directory names that follow, we
1917                  * send all the dirs together in one file-list.  The dir_flist
1918                  * tree links all the child subdirs onto the last dup dir. */
1919                 while ((dir_ndx = DIR_NEXT_SIBLING(dp)) >= 0
1920                     && dir_flist->sorted[dir_ndx]->flags & FLAG_DUPLICATE) {
1921                         send_dir_ndx = dir_ndx;
1922                         file = dir_flist->sorted[dir_ndx];
1923                         /* Try to avoid some duplicate scanning of identical dirs. */
1924                         if (F_PATHNAME(file) == pathname && prev_flags & FLAG_CONTENT_DIR)
1925                                 file->flags &= ~FLAG_CONTENT_DIR;
1926                         send1extra(f, file, flist);
1927                         prev_flags = file->flags;
1928                         dp = F_DIR_NODE_P(file);
1929                 }
1930
1931                 if (protocol_version < 31 || io_error == save_io_error || ignore_errors)
1932                         write_byte(f, 0);
1933                 else {
1934                         write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
1935                         write_int(f, io_error);
1936                 }
1937
1938                 if (need_unsorted_flist) {
1939                         if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
1940                                 out_of_memory("send_extra_file_list");
1941                         memcpy(flist->sorted, flist->files,
1942                                flist->used * sizeof (struct file_struct*));
1943                 } else
1944                         flist->sorted = flist->files;
1945
1946                 flist_sort_and_clean(flist, 0);
1947
1948                 add_dirs_to_tree(send_dir_ndx, flist, stats.num_dirs - dstart);
1949                 flist_done_allocating(flist);
1950
1951                 file_total += flist->used;
1952                 stats.flist_size += stats.total_written - start_write;
1953                 stats.num_files += flist->used;
1954                 if (DEBUG_GTE(FLIST, 3))
1955                         output_flist(flist);
1956
1957                 if (DIR_FIRST_CHILD(dp) >= 0) {
1958                         send_dir_ndx = DIR_FIRST_CHILD(dp);
1959                         send_dir_depth++;
1960                 } else {
1961                         while (DIR_NEXT_SIBLING(dp) < 0) {
1962                                 if ((send_dir_ndx = DIR_PARENT(dp)) < 0) {
1963                                         write_ndx(f, NDX_FLIST_EOF);
1964                                         flist_eof = 1;
1965                                         change_local_filter_dir(NULL, 0, 0);
1966                                         goto finish;
1967                                 }
1968                                 send_dir_depth--;
1969                                 file = dir_flist->sorted[send_dir_ndx];
1970                                 dp = F_DIR_NODE_P(file);
1971                         }
1972                         send_dir_ndx = DIR_NEXT_SIBLING(dp);
1973                 }
1974         }
1975
1976   finish:
1977         if (io_error != save_io_error && protocol_version == 30 && !ignore_errors)
1978                 send_msg_int(MSG_IO_ERROR, io_error);
1979 }
1980
1981 struct file_list *send_file_list(int f, int argc, char *argv[])
1982 {
1983         static const char *lastdir;
1984         static int lastdir_len = -1;
1985         int len, dirlen;
1986         STRUCT_STAT st;
1987         char *p, *dir;
1988         struct file_list *flist;
1989         struct timeval start_tv, end_tv;
1990         int64 start_write;
1991         int use_ff_fd = 0;
1992         int disable_buffering;
1993         int flags = recurse ? FLAG_CONTENT_DIR : 0;
1994         int reading_remotely = filesfrom_host != NULL;
1995         int rl_flags = (reading_remotely ? 0 : RL_DUMP_COMMENTS)
1996 #ifdef ICONV_OPTION
1997                      | (filesfrom_convert ? RL_CONVERT : 0)
1998 #endif
1999                      | (eol_nulls || reading_remotely ? RL_EOL_NULLS : 0);
2000         int implied_dot_dir = 0;
2001
2002         rprintf(FLOG, "building file list\n");
2003         if (show_filelist_p())
2004                 start_filelist_progress("building file list");
2005         else if (inc_recurse && INFO_GTE(FLIST, 1) && !am_server)
2006                 rprintf(FCLIENT, "sending incremental file list\n");
2007
2008         start_write = stats.total_written;
2009         gettimeofday(&start_tv, NULL);
2010
2011         if (!orig_dir)
2012                 orig_dir = strdup(curr_dir);
2013
2014         if (relative_paths && protocol_version >= 30)
2015                 implied_dirs = 1; /* We send flagged implied dirs */
2016
2017 #ifdef SUPPORT_HARD_LINKS
2018         if (preserve_hard_links && protocol_version >= 30 && !cur_flist)
2019                 init_hard_links();
2020 #endif
2021
2022         flist = cur_flist = flist_new(0, "send_file_list");
2023         if (inc_recurse) {
2024                 dir_flist = flist_new(FLIST_TEMP, "send_file_list");
2025                 flags |= FLAG_DIVERT_DIRS;
2026         } else
2027                 dir_flist = cur_flist;
2028
2029         disable_buffering = io_start_buffering_out(f);
2030         if (filesfrom_fd >= 0) {
2031                 if (argv[0] && !change_dir(argv[0], CD_NORMAL)) {
2032                         rsyserr(FERROR_XFER, errno, "change_dir %s failed",
2033                                 full_fname(argv[0]));
2034                         exit_cleanup(RERR_FILESELECT);
2035                 }
2036                 use_ff_fd = 1;
2037         }
2038
2039         while (1) {
2040                 char fbuf[MAXPATHLEN], *fn, name_type;
2041
2042                 if (use_ff_fd) {
2043                         if (read_line(filesfrom_fd, fbuf, sizeof fbuf, rl_flags) == 0)
2044                                 break;
2045                         sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2046                 } else {
2047                         if (argc-- == 0)
2048                                 break;
2049                         strlcpy(fbuf, *argv++, MAXPATHLEN);
2050                         if (sanitize_paths)
2051                                 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2052                 }
2053
2054                 len = strlen(fbuf);
2055                 if (relative_paths) {
2056                         /* We clean up fbuf below. */
2057                         name_type = NORMAL_NAME;
2058                 } else if (!len || fbuf[len - 1] == '/') {
2059                         if (len == 2 && fbuf[0] == '.') {
2060                                 /* Turn "./" into just "." rather than "./." */
2061                                 fbuf[--len] = '\0';
2062                         } else {
2063                                 if (len + 1 >= MAXPATHLEN)
2064                                         overflow_exit("send_file_list");
2065                                 fbuf[len++] = '.';
2066                                 fbuf[len] = '\0';
2067                         }
2068                         name_type = DOTDIR_NAME;
2069                 } else if (len > 1 && fbuf[len-1] == '.' && fbuf[len-2] == '.'
2070                     && (len == 2 || fbuf[len-3] == '/')) {
2071                         if (len + 2 >= MAXPATHLEN)
2072                                 overflow_exit("send_file_list");
2073                         fbuf[len++] = '/';
2074                         fbuf[len++] = '.';
2075                         fbuf[len] = '\0';
2076                         name_type = DOTDIR_NAME;
2077                 } else if (fbuf[len-1] == '.' && (len == 1 || fbuf[len-2] == '/'))
2078                         name_type = DOTDIR_NAME;
2079                 else
2080                         name_type = NORMAL_NAME;
2081
2082                 dir = NULL;
2083
2084                 if (!relative_paths) {
2085                         p = strrchr(fbuf, '/');
2086                         if (p) {
2087                                 *p = '\0';
2088                                 if (p == fbuf)
2089                                         dir = "/";
2090                                 else
2091                                         dir = fbuf;
2092                                 len -= p - fbuf + 1;
2093                                 fn = p + 1;
2094                         } else
2095                                 fn = fbuf;
2096                 } else {
2097                         if ((p = strstr(fbuf, "/./")) != NULL) {
2098                                 *p = '\0';
2099                                 if (p == fbuf)
2100                                         dir = "/";
2101                                 else {
2102                                         dir = fbuf;
2103                                         clean_fname(dir, 0);
2104                                 }
2105                                 fn = p + 3;
2106                                 while (*fn == '/')
2107                                         fn++;
2108                                 if (!*fn)
2109                                         *--fn = '\0'; /* ensure room for '.' */
2110                         } else
2111                                 fn = fbuf;
2112                         /* A leading ./ can be used in relative mode to affect
2113                          * the dest dir without its name being in the path. */
2114                         if (*fn == '.' && fn[1] == '/' && !implied_dot_dir) {
2115                                 send_file_name(f, flist, ".", NULL,
2116                                     (flags | FLAG_IMPLIED_DIR) & ~FLAG_CONTENT_DIR,
2117                                     ALL_FILTERS);
2118                                 implied_dot_dir = 1;
2119                         }
2120                         len = clean_fname(fn, CFN_KEEP_TRAILING_SLASH
2121                                             | CFN_DROP_TRAILING_DOT_DIR);
2122                         if (len == 1) {
2123                                 if (fn[0] == '/') {
2124                                         fn = "/.";
2125                                         len = 2;
2126                                         name_type = DOTDIR_NAME;
2127                                 } else if (fn[0] == '.')
2128                                         name_type = DOTDIR_NAME;
2129                         } else if (fn[len-1] == '/') {
2130                                 fn[--len] = '\0';
2131                                 if (len == 1 && *fn == '.')
2132                                         name_type = DOTDIR_NAME;
2133                                 else
2134                                         name_type = SLASH_ENDING_NAME;
2135                         }
2136                         /* Reject a ".." dir in the active part of the path. */
2137                         for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
2138                                 if ((p[2] == '/' || p[2] == '\0')
2139                                  && (p == fn || p[-1] == '/')) {
2140                                         rprintf(FERROR,
2141                                             "found \"..\" dir in relative path: %s\n",
2142                                             fn);
2143                                         exit_cleanup(RERR_SYNTAX);
2144                                 }
2145                         }
2146                 }
2147
2148                 if (!*fn) {
2149                         len = 1;
2150                         fn = ".";
2151                         name_type = DOTDIR_NAME;
2152                 }
2153
2154                 dirlen = dir ? strlen(dir) : 0;
2155                 if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
2156                         if (!change_pathname(NULL, dir, -dirlen))
2157                                 continue;
2158                         lastdir = pathname;
2159                         lastdir_len = pathname_len;
2160                 } else if (!change_pathname(NULL, lastdir, lastdir_len))
2161                         continue;
2162
2163                 if (fn != fbuf)
2164                         memmove(fbuf, fn, len + 1);
2165
2166                 if (link_stat(fbuf, &st, copy_dirlinks || name_type != NORMAL_NAME) != 0
2167                  || (name_type != DOTDIR_NAME && is_daemon_excluded(fbuf, S_ISDIR(st.st_mode)))
2168                  || (relative_paths && path_is_daemon_excluded(fbuf, 1))) {
2169                         io_error |= IOERR_GENERAL;
2170                         rsyserr(FERROR_XFER, errno, "link_stat %s failed",
2171                                 full_fname(fbuf));
2172                         continue;
2173                 }
2174
2175                 /* A dot-dir should not be excluded! */
2176                 if (name_type != DOTDIR_NAME
2177                  && is_excluded(fbuf, S_ISDIR(st.st_mode) != 0, ALL_FILTERS))
2178                         continue;
2179
2180                 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
2181                         rprintf(FINFO, "skipping directory %s\n", fbuf);
2182                         continue;
2183                 }
2184
2185                 if (inc_recurse && relative_paths && *fbuf) {
2186                         if ((p = strchr(fbuf+1, '/')) != NULL) {
2187                                 if (p - fbuf == 1 && *fbuf == '.') {
2188                                         if ((fn = strchr(p+1, '/')) != NULL)
2189                                                 p = fn;
2190                                 } else
2191                                         fn = p;
2192                                 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, name_type);
2193                                 if (fn == p)
2194                                         continue;
2195                         }
2196                 } else if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
2197                         /* Send the implied directories at the start of the
2198                          * source spec, so we get their permissions right. */
2199                         send_implied_dirs(f, flist, fbuf, fbuf, p, flags, 0);
2200                 }
2201
2202                 if (one_file_system)
2203                         filesystem_dev = st.st_dev;
2204
2205                 if (recurse || (xfer_dirs && name_type != NORMAL_NAME)) {
2206                         struct file_struct *file;
2207                         file = send_file_name(f, flist, fbuf, &st,
2208                                               FLAG_TOP_DIR | FLAG_CONTENT_DIR | flags,
2209                                               NO_FILTERS);
2210                         if (!file)
2211                                 continue;
2212                         if (inc_recurse) {
2213                                 if (name_type == DOTDIR_NAME) {
2214                                         if (send_dir_depth < 0) {
2215                                                 send_dir_depth = 0;
2216                                                 change_local_filter_dir(fbuf, len, send_dir_depth);
2217                                         }
2218                                         send_directory(f, flist, fbuf, len, flags);
2219                                 }
2220                         } else
2221                                 send_if_directory(f, flist, file, fbuf, len, flags);
2222                 } else
2223                         send_file_name(f, flist, fbuf, &st, flags, NO_FILTERS);
2224         }
2225
2226         gettimeofday(&end_tv, NULL);
2227         stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2228                               + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2229         if (stats.flist_buildtime == 0)
2230                 stats.flist_buildtime = 1;
2231         start_tv = end_tv;
2232
2233         /* Indicate end of file list */
2234         if (protocol_version < 31 || io_error == 0 || ignore_errors)
2235                 write_byte(f, 0);
2236         else {
2237                 write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
2238                 write_int(f, io_error);
2239         }
2240
2241 #ifdef SUPPORT_HARD_LINKS
2242         if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
2243                 idev_destroy();
2244 #endif
2245
2246         if (show_filelist_p())
2247                 finish_filelist_progress(flist);
2248
2249         gettimeofday(&end_tv, NULL);
2250         stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2251                              + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2252
2253         /* When converting names, both sides keep an unsorted file-list array
2254          * because the names will differ on the sending and receiving sides
2255          * (both sides will use the unsorted index number for each item). */
2256
2257         /* Sort the list without removing any duplicates.  This allows the
2258          * receiving side to ask for whatever name it kept.  For incremental
2259          * recursion mode, the sender marks duplicate dirs so that it can
2260          * send them together in a single file-list. */
2261         if (need_unsorted_flist) {
2262                 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2263                         out_of_memory("send_file_list");
2264                 memcpy(flist->sorted, flist->files,
2265                        flist->used * sizeof (struct file_struct*));
2266         } else
2267                 flist->sorted = flist->files;
2268         flist_sort_and_clean(flist, 0);
2269         file_total += flist->used;
2270
2271         if (numeric_ids <= 0 && !inc_recurse)
2272                 send_id_list(f);
2273
2274         /* send the io_error flag */
2275         if (protocol_version < 30)
2276                 write_int(f, ignore_errors ? 0 : io_error);
2277         else if (io_error && protocol_version == 30 && !ignore_errors)
2278                 send_msg_int(MSG_IO_ERROR, io_error);
2279
2280         if (disable_buffering)
2281                 io_end_buffering_out();
2282
2283         stats.flist_size = stats.total_written - start_write;
2284         stats.num_files = flist->used;
2285
2286         if (DEBUG_GTE(FLIST, 3))
2287                 output_flist(flist);
2288
2289         if (DEBUG_GTE(FLIST, 2))
2290                 rprintf(FINFO, "send_file_list done\n");
2291
2292         if (inc_recurse) {
2293                 send_dir_depth = 1;
2294                 add_dirs_to_tree(-1, flist, stats.num_dirs);
2295                 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2296                         flist->parent_ndx = -1;
2297                 flist_done_allocating(flist);
2298                 if (send_dir_ndx < 0) {
2299                         write_ndx(f, NDX_FLIST_EOF);
2300                         flist_eof = 1;
2301                 }
2302                 else if (file_total == 1) {
2303                         /* If we're creating incremental file-lists and there
2304                          * was just 1 item in the first file-list, send 1 more
2305                          * file-list to check if this is a 1-file xfer. */
2306                         send_extra_file_list(f, 1);
2307                 }
2308         }
2309
2310         return flist;
2311 }
2312
2313 struct file_list *recv_file_list(int f)
2314 {
2315         struct file_list *flist;
2316         int dstart, flags;
2317         int64 start_read;
2318
2319         if (!first_flist) {
2320                 if (show_filelist_p())
2321                         start_filelist_progress("receiving file list");
2322                 else if (inc_recurse && INFO_GTE(FLIST, 1) && !am_server)
2323                         rprintf(FCLIENT, "receiving incremental file list\n");
2324                 rprintf(FLOG, "receiving file list\n");
2325         }
2326
2327         start_read = stats.total_read;
2328
2329 #ifdef SUPPORT_HARD_LINKS
2330         if (preserve_hard_links && !first_flist)
2331                 init_hard_links();
2332 #endif
2333
2334         flist = flist_new(0, "recv_file_list");
2335
2336         if (inc_recurse) {
2337                 if (flist->ndx_start == 1)
2338                         dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
2339                 dstart = dir_flist->used;
2340         } else {
2341                 dir_flist = flist;
2342                 dstart = 0;
2343         }
2344
2345         while ((flags = read_byte(f)) != 0) {
2346                 struct file_struct *file;
2347
2348                 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
2349                         flags |= read_byte(f) << 8;
2350
2351                 if (flags == (XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST)) {
2352                         int err;
2353                         if (protocol_version < 31) {
2354                                 rprintf(FERROR, "Invalid flist flag: %x\n", flags);
2355                                 exit_cleanup(RERR_PROTOCOL);
2356                         }
2357                         err = read_int(f);
2358                         if (!ignore_errors)
2359                                 io_error |= err;
2360                         break;
2361                 }
2362
2363                 flist_expand(flist, 1);
2364                 file = recv_file_entry(flist, flags, f);
2365
2366                 if (S_ISREG(file->mode)) {
2367                         /* Already counted */
2368                 } else if (S_ISDIR(file->mode)) {
2369                         if (inc_recurse) {
2370                                 flist_expand(dir_flist, 1);
2371                                 dir_flist->files[dir_flist->used++] = file;
2372                         }
2373                         stats.num_dirs++;
2374                 } else if (S_ISLNK(file->mode))
2375                         stats.num_symlinks++;
2376                 else if (IS_DEVICE(file->mode))
2377                         stats.num_symlinks++;
2378                 else
2379                         stats.num_specials++;
2380
2381                 flist->files[flist->used++] = file;
2382
2383                 maybe_emit_filelist_progress(flist->used);
2384
2385                 if (DEBUG_GTE(FLIST, 2)) {
2386                         char *name = f_name(file, NULL);
2387                         rprintf(FINFO, "recv_file_name(%s)\n", NS(name));
2388                 }
2389         }
2390         file_total += flist->used;
2391
2392         if (DEBUG_GTE(FLIST, 2))
2393                 rprintf(FINFO, "received %d names\n", flist->used);
2394
2395         if (show_filelist_p())
2396                 finish_filelist_progress(flist);
2397
2398         if (need_unsorted_flist) {
2399                 /* Create an extra array of index pointers that we can sort for
2400                  * the generator's use (for wading through the files in sorted
2401                  * order and for calling flist_find()).  We keep the "files"
2402                  * list unsorted for our exchange of index numbers with the
2403                  * other side (since their names may not sort the same). */
2404                 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2405                         out_of_memory("recv_file_list");
2406                 memcpy(flist->sorted, flist->files,
2407                        flist->used * sizeof (struct file_struct*));
2408                 if (inc_recurse && dir_flist->used > dstart) {
2409                         static int dir_flist_malloced = 0;
2410                         if (dir_flist_malloced < dir_flist->malloced) {
2411                                 dir_flist->sorted = realloc_array(dir_flist->sorted,
2412                                                         struct file_struct *,
2413                                                         dir_flist->malloced);
2414                                 dir_flist_malloced = dir_flist->malloced;
2415                         }
2416                         memcpy(dir_flist->sorted + dstart, dir_flist->files + dstart,
2417                                (dir_flist->used - dstart) * sizeof (struct file_struct*));
2418                         fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2419                 }
2420         } else {
2421                 flist->sorted = flist->files;
2422                 if (inc_recurse && dir_flist->used > dstart) {
2423                         dir_flist->sorted = dir_flist->files;
2424                         fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2425                 }
2426         }
2427
2428         if (inc_recurse)
2429                 flist_done_allocating(flist);
2430         else if (f >= 0)
2431                 recv_id_list(f, flist);
2432
2433         flist_sort_and_clean(flist, relative_paths);
2434
2435         if (protocol_version < 30) {
2436                 /* Recv the io_error flag */
2437                 int err = read_int(f);
2438                 if (!ignore_errors)
2439                         io_error |= err;
2440         } else if (inc_recurse && flist->ndx_start == 1) {
2441                 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2442                         flist->parent_ndx = -1;
2443         }
2444
2445         if (DEBUG_GTE(FLIST, 3))
2446                 output_flist(flist);
2447
2448         if (DEBUG_GTE(FLIST, 2))
2449                 rprintf(FINFO, "recv_file_list done\n");
2450
2451         stats.flist_size += stats.total_read - start_read;
2452         stats.num_files += flist->used;
2453
2454         return flist;
2455 }
2456
2457 /* This is only used once by the receiver if the very first file-list
2458  * has exactly one item in it. */
2459 void recv_additional_file_list(int f)
2460 {
2461         struct file_list *flist;
2462         int ndx = read_ndx(f);
2463         if (ndx == NDX_FLIST_EOF) {
2464                 flist_eof = 1;
2465                 change_local_filter_dir(NULL, 0, 0);
2466         } else {
2467                 ndx = NDX_FLIST_OFFSET - ndx;
2468                 if (ndx < 0 || ndx >= dir_flist->used) {
2469                         ndx = NDX_FLIST_OFFSET - ndx;
2470                         rprintf(FERROR,
2471                                 "[%s] Invalid dir index: %d (%d - %d)\n",
2472                                 who_am_i(), ndx, NDX_FLIST_OFFSET,
2473                                 NDX_FLIST_OFFSET - dir_flist->used + 1);
2474                         exit_cleanup(RERR_PROTOCOL);
2475                 }
2476                 if (DEBUG_GTE(FLIST, 3)) {
2477                         rprintf(FINFO, "[%s] receiving flist for dir %d\n",
2478                                 who_am_i(), ndx);
2479                 }
2480                 flist = recv_file_list(f);
2481                 flist->parent_ndx = ndx;
2482         }
2483 }
2484
2485 /* Search for an identically-named item in the file list.  Note that the
2486  * items must agree in their directory-ness, or no match is returned. */
2487 int flist_find(struct file_list *flist, struct file_struct *f)
2488 {
2489         int low = flist->low, high = flist->high;
2490         int diff, mid, mid_up;
2491
2492         while (low <= high) {
2493                 mid = (low + high) / 2;
2494                 if (F_IS_ACTIVE(flist->sorted[mid]))
2495                         mid_up = mid;
2496                 else {
2497                         /* Scan for the next non-empty entry using the cached
2498                          * distance values.  If the value isn't fully up-to-
2499                          * date, update it. */
2500                         mid_up = mid + F_DEPTH(flist->sorted[mid]);
2501                         if (!F_IS_ACTIVE(flist->sorted[mid_up])) {
2502                                 do {
2503                                     mid_up += F_DEPTH(flist->sorted[mid_up]);
2504                                 } while (!F_IS_ACTIVE(flist->sorted[mid_up]));
2505                                 F_DEPTH(flist->sorted[mid]) = mid_up - mid;
2506                         }
2507                         if (mid_up > high) {
2508                                 /* If there's nothing left above us, set high to
2509                                  * a non-empty entry below us and continue. */
2510                                 high = mid - (int)flist->sorted[mid]->len32;
2511                                 if (!F_IS_ACTIVE(flist->sorted[high])) {
2512                                         do {
2513                                             high -= (int)flist->sorted[high]->len32;
2514                                         } while (!F_IS_ACTIVE(flist->sorted[high]));
2515                                         flist->sorted[mid]->len32 = mid - high;
2516                                 }
2517                                 continue;
2518                         }
2519                 }
2520                 diff = f_name_cmp(flist->sorted[mid_up], f);
2521                 if (diff == 0) {
2522                         if (protocol_version < 29
2523                             && S_ISDIR(flist->sorted[mid_up]->mode)
2524                             != S_ISDIR(f->mode))
2525                                 return -1;
2526                         return mid_up;
2527                 }
2528                 if (diff < 0)
2529                         low = mid_up + 1;
2530                 else
2531                         high = mid - 1;
2532         }
2533         return -1;
2534 }
2535
2536 /*
2537  * Free up any resources a file_struct has allocated
2538  * and clear the file.
2539  */
2540 void clear_file(struct file_struct *file)
2541 {
2542         /* The +1 zeros out the first char of the basename. */
2543         memset(file, 0, FILE_STRUCT_LEN + 1);
2544         /* In an empty entry, F_DEPTH() is an offset to the next non-empty
2545          * entry.  Likewise for len32 in the opposite direction.  We assume
2546          * that we're alone for now since flist_find() will adjust the counts
2547          * it runs into that aren't up-to-date. */
2548         file->len32 = F_DEPTH(file) = 1;
2549 }
2550
2551 /* Allocate a new file list. */
2552 struct file_list *flist_new(int flags, char *msg)
2553 {
2554         struct file_list *flist;
2555
2556         if (!(flist = new0(struct file_list)))
2557                 out_of_memory(msg);
2558
2559         if (flags & FLIST_TEMP) {
2560                 if (!(flist->file_pool = pool_create(SMALL_EXTENT, 0,
2561                                                      out_of_memory,
2562                                                      POOL_INTERN)))
2563                         out_of_memory(msg);
2564         } else {
2565                 /* This is a doubly linked list with prev looping back to
2566                  * the end of the list, but the last next pointer is NULL. */
2567                 if (!first_flist) {
2568                         flist->file_pool = pool_create(NORMAL_EXTENT, 0,
2569                                                        out_of_memory,
2570                                                        POOL_INTERN);
2571                         if (!flist->file_pool)
2572                                 out_of_memory(msg);
2573
2574                         flist->ndx_start = flist->flist_num = inc_recurse ? 1 : 0;
2575
2576                         first_flist = cur_flist = flist->prev = flist;
2577                 } else {
2578                         struct file_list *prev = first_flist->prev;
2579
2580                         flist->file_pool = first_flist->file_pool;
2581
2582                         flist->ndx_start = prev->ndx_start + prev->used + 1;
2583                         flist->flist_num = prev->flist_num + 1;
2584
2585                         flist->prev = prev;
2586                         prev->next = first_flist->prev = flist;
2587                 }
2588                 flist->pool_boundary = pool_boundary(flist->file_pool, 0);
2589                 flist_cnt++;
2590         }
2591
2592         return flist;
2593 }
2594
2595 /* Free up all elements in a flist. */
2596 void flist_free(struct file_list *flist)
2597 {
2598         if (!flist->prev) {
2599                 /* Was FLIST_TEMP dir-list. */
2600         } else if (flist == flist->prev) {
2601                 first_flist = cur_flist = NULL;
2602                 file_total = 0;
2603                 flist_cnt = 0;
2604         } else {
2605                 if (flist == cur_flist)
2606                         cur_flist = flist->next;
2607                 if (flist == first_flist)
2608                         first_flist = first_flist->next;
2609                 else {
2610                         flist->prev->next = flist->next;
2611                         if (!flist->next)
2612                                 flist->next = first_flist;
2613                 }
2614                 flist->next->prev = flist->prev;
2615                 file_total -= flist->used;
2616                 flist_cnt--;
2617         }
2618
2619         if (!flist->prev || !flist_cnt)
2620                 pool_destroy(flist->file_pool);
2621         else
2622                 pool_free_old(flist->file_pool, flist->pool_boundary);
2623
2624         if (flist->sorted && flist->sorted != flist->files)
2625                 free(flist->sorted);
2626         free(flist->files);
2627         free(flist);
2628 }
2629
2630 /* This routine ensures we don't have any duplicate names in our file list.
2631  * duplicate names can cause corruption because of the pipelining. */
2632 static void flist_sort_and_clean(struct file_list *flist, int strip_root)
2633 {
2634         char fbuf[MAXPATHLEN];
2635         int i, prev_i;
2636
2637         if (!flist)
2638                 return;
2639         if (flist->used == 0) {
2640                 flist->high = -1;
2641                 flist->low = 0;
2642                 return;
2643         }
2644
2645         fsort(flist->sorted, flist->used);
2646
2647         if (!am_sender || inc_recurse) {
2648                 for (i = prev_i = 0; i < flist->used; i++) {
2649                         if (F_IS_ACTIVE(flist->sorted[i])) {
2650                                 prev_i = i;
2651                                 break;
2652                         }
2653                 }
2654                 flist->low = prev_i;
2655         } else {
2656                 i = prev_i = flist->used - 1;
2657                 flist->low = 0;
2658         }
2659
2660         while (++i < flist->used) {
2661                 int j;
2662                 struct file_struct *file = flist->sorted[i];
2663
2664                 if (!F_IS_ACTIVE(file))
2665                         continue;
2666                 if (f_name_cmp(file, flist->sorted[prev_i]) == 0)
2667                         j = prev_i;
2668                 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
2669                         int save_mode = file->mode;
2670                         /* Make sure that this directory doesn't duplicate a
2671                          * non-directory earlier in the list. */
2672                         flist->high = prev_i;
2673                         file->mode = S_IFREG;
2674                         j = flist_find(flist, file);
2675                         file->mode = save_mode;
2676                 } else
2677                         j = -1;
2678                 if (j >= 0) {
2679                         int keep, drop;
2680                         /* If one is a dir and the other is not, we want to
2681                          * keep the dir because it might have contents in the
2682                          * list.  Otherwise keep the first one. */
2683                         if (S_ISDIR(file->mode)) {
2684                                 struct file_struct *fp = flist->sorted[j];
2685                                 if (!S_ISDIR(fp->mode))
2686                                         keep = i, drop = j;
2687                                 else {
2688                                         if (am_sender)
2689                                                 file->flags |= FLAG_DUPLICATE;
2690                                         else { /* Make sure we merge our vital flags. */
2691                                                 fp->flags |= file->flags & (FLAG_TOP_DIR|FLAG_CONTENT_DIR);
2692                                                 fp->flags &= file->flags | ~FLAG_IMPLIED_DIR;
2693                                         }
2694                                         keep = j, drop = i;
2695                                 }
2696                         } else
2697                                 keep = j, drop = i;
2698
2699                         if (!am_sender) {
2700                                 if (DEBUG_GTE(DUP, 1)) {
2701                                         rprintf(FINFO,
2702                                             "removing duplicate name %s from file list (%d)\n",
2703                                             f_name(file, fbuf), drop + flist->ndx_start);
2704                                 }
2705                                 clear_file(flist->sorted[drop]);
2706                         }
2707
2708                         if (keep == i) {
2709                                 if (flist->low == drop) {
2710                                         for (j = drop + 1;
2711                                              j < i && !F_IS_ACTIVE(flist->sorted[j]);
2712                                              j++) {}
2713                                         flist->low = j;
2714                                 }
2715                                 prev_i = i;
2716                         }
2717                 } else
2718                         prev_i = i;
2719         }
2720         flist->high = prev_i;
2721
2722         if (strip_root) {
2723                 /* We need to strip off the leading slashes for relative
2724                  * paths, but this must be done _after_ the sorting phase. */
2725                 for (i = flist->low; i <= flist->high; i++) {
2726                         struct file_struct *file = flist->sorted[i];
2727
2728                         if (!file->dirname)
2729                                 continue;
2730                         while (*file->dirname == '/')
2731                                 file->dirname++;
2732                         if (!*file->dirname)
2733                                 file->dirname = NULL;
2734                 }
2735         }
2736
2737         if (prune_empty_dirs && !am_sender) {
2738                 int j, prev_depth = 0;
2739
2740                 prev_i = 0; /* It's OK that this isn't really true. */
2741
2742                 for (i = flist->low; i <= flist->high; i++) {
2743                         struct file_struct *fp, *file = flist->sorted[i];
2744
2745                         /* This temporarily abuses the F_DEPTH() value for a
2746                          * directory that is in a chain that might get pruned.
2747                          * We restore the old value if it gets a reprieve. */
2748                         if (S_ISDIR(file->mode) && F_DEPTH(file)) {
2749                                 /* Dump empty dirs when coming back down. */
2750                                 for (j = prev_depth; j >= F_DEPTH(file); j--) {
2751                                         fp = flist->sorted[prev_i];
2752                                         if (F_DEPTH(fp) >= 0)
2753                                                 break;
2754                                         prev_i = -F_DEPTH(fp)-1;
2755                                         clear_file(fp);
2756                                 }
2757                                 prev_depth = F_DEPTH(file);
2758                                 if (is_excluded(f_name(file, fbuf), 1,
2759                                                        ALL_FILTERS)) {
2760                                         /* Keep dirs through this dir. */
2761                                         for (j = prev_depth-1; ; j--) {
2762                                                 fp = flist->sorted[prev_i];
2763                                                 if (F_DEPTH(fp) >= 0)
2764                                                         break;
2765                                                 prev_i = -F_DEPTH(fp)-1;
2766                                                 F_DEPTH(fp) = j;
2767                                         }
2768                                 } else
2769                                         F_DEPTH(file) = -prev_i-1;
2770                                 prev_i = i;
2771                         } else {
2772                                 /* Keep dirs through this non-dir. */
2773                                 for (j = prev_depth; ; j--) {
2774                                         fp = flist->sorted[prev_i];
2775                                         if (F_DEPTH(fp) >= 0)
2776                                                 break;
2777                                         prev_i = -F_DEPTH(fp)-1;
2778                                         F_DEPTH(fp) = j;
2779                                 }
2780                         }
2781                 }
2782                 /* Dump all remaining empty dirs. */
2783                 while (1) {
2784                         struct file_struct *fp = flist->sorted[prev_i];
2785                         if (F_DEPTH(fp) >= 0)
2786                                 break;
2787                         prev_i = -F_DEPTH(fp)-1;
2788                         clear_file(fp);
2789                 }
2790
2791                 for (i = flist->low; i <= flist->high; i++) {
2792                         if (F_IS_ACTIVE(flist->sorted[i]))
2793                                 break;
2794                 }
2795                 flist->low = i;
2796                 for (i = flist->high; i >= flist->low; i--) {
2797                         if (F_IS_ACTIVE(flist->sorted[i]))
2798                                 break;
2799                 }
2800                 flist->high = i;
2801         }
2802 }
2803
2804 static void output_flist(struct file_list *flist)
2805 {
2806         char uidbuf[16], gidbuf[16], depthbuf[16];
2807         struct file_struct *file;
2808         const char *root, *dir, *slash, *name, *trail;
2809         const char *who = who_am_i();
2810         int i;
2811
2812         rprintf(FINFO, "[%s] flist start=%d, used=%d, low=%d, high=%d\n",
2813                 who, flist->ndx_start, flist->used, flist->low, flist->high);
2814         for (i = 0; i < flist->used; i++) {
2815                 file = flist->files[i];
2816                 if ((am_root || am_sender) && uid_ndx) {
2817                         snprintf(uidbuf, sizeof uidbuf, " uid=%u",
2818                                  F_OWNER(file));
2819                 } else
2820                         *uidbuf = '\0';
2821                 if (gid_ndx) {
2822                         static char parens[] = "(\0)\0\0\0";
2823                         char *pp = parens + (file->flags & FLAG_SKIP_GROUP ? 0 : 3);
2824                         snprintf(gidbuf, sizeof gidbuf, " gid=%s%u%s",
2825                                  pp, F_GROUP(file), pp + 2);
2826                 } else
2827                         *gidbuf = '\0';
2828                 if (!am_sender)
2829                         snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
2830                 if (F_IS_ACTIVE(file)) {
2831                         root = am_sender ? NS(F_PATHNAME(file)) : depthbuf;
2832                         if ((dir = file->dirname) == NULL)
2833                                 dir = slash = "";
2834                         else
2835                                 slash = "/";
2836                         name = file->basename;
2837                         trail = S_ISDIR(file->mode) ? "/" : "";
2838                 } else
2839                         root = dir = slash = name = trail = "";
2840                 rprintf(FINFO,
2841                         "[%s] i=%d %s %s%s%s%s mode=0%o len=%s%s%s flags=%x\n",
2842                         who, i + flist->ndx_start,
2843                         root, dir, slash, name, trail,
2844                         (int)file->mode, comma_num(F_LENGTH(file)),
2845                         uidbuf, gidbuf, file->flags);
2846         }
2847 }
2848
2849 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
2850 enum fnc_type { t_PATH, t_ITEM };
2851
2852 static int found_prefix;
2853
2854 /* Compare the names of two file_struct entities, similar to how strcmp()
2855  * would do if it were operating on the joined strings.
2856  *
2857  * Some differences beginning with protocol_version 29: (1) directory names
2858  * are compared with an assumed trailing slash so that they compare in a
2859  * way that would cause them to sort immediately prior to any content they
2860  * may have; (2) a directory of any name compares after a non-directory of
2861  * any name at the same depth; (3) a directory with name "." compares prior
2862  * to anything else.  These changes mean that a directory and a non-dir
2863  * with the same name will not compare as equal (protocol_version >= 29).
2864  *
2865  * The dirname component can be an empty string, but the basename component
2866  * cannot (and never is in the current codebase).  The basename component
2867  * may be NULL (for a removed item), in which case it is considered to be
2868  * after any existing item. */
2869 int f_name_cmp(const struct file_struct *f1, const struct file_struct *f2)
2870 {
2871         int dif;
2872         const uchar *c1, *c2;
2873         enum fnc_state state1, state2;
2874         enum fnc_type type1, type2;
2875         enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
2876
2877         if (!f1 || !F_IS_ACTIVE(f1)) {
2878                 if (!f2 || !F_IS_ACTIVE(f2))
2879                         return 0;
2880                 return -1;
2881         }
2882         if (!f2 || !F_IS_ACTIVE(f2))
2883                 return 1;
2884
2885         c1 = (uchar*)f1->dirname;
2886         c2 = (uchar*)f2->dirname;
2887         if (c1 == c2)
2888                 c1 = c2 = NULL;
2889         if (!c1) {
2890                 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2891                 c1 = (const uchar*)f1->basename;
2892                 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2893                         type1 = t_ITEM;
2894                         state1 = s_TRAILING;
2895                         c1 = (uchar*)"";
2896                 } else
2897                         state1 = s_BASE;
2898         } else {
2899                 type1 = t_path;
2900                 state1 = s_DIR;
2901         }
2902         if (!c2) {
2903                 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2904                 c2 = (const uchar*)f2->basename;
2905                 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2906                         type2 = t_ITEM;
2907                         state2 = s_TRAILING;
2908                         c2 = (uchar*)"";
2909                 } else
2910                         state2 = s_BASE;
2911         } else {
2912                 type2 = t_path;
2913                 state2 = s_DIR;
2914         }
2915
2916         if (type1 != type2)
2917                 return type1 == t_PATH ? 1 : -1;
2918
2919         do {
2920                 if (!*c1) {
2921                         switch (state1) {
2922                         case s_DIR:
2923                                 state1 = s_SLASH;
2924                                 c1 = (uchar*)"/";
2925                                 break;
2926                         case s_SLASH:
2927                                 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2928                                 c1 = (const uchar*)f1->basename;
2929                                 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2930                                         type1 = t_ITEM;
2931                                         state1 = s_TRAILING;
2932                                         c1 = (uchar*)"";
2933                                 } else
2934                                         state1 = s_BASE;
2935                                 break;
2936                         case s_BASE:
2937                                 state1 = s_TRAILING;
2938                                 if (type1 == t_PATH) {
2939                                         c1 = (uchar*)"/";
2940                                         break;
2941                                 }
2942                                 /* FALL THROUGH */
2943                         case s_TRAILING:
2944                                 type1 = t_ITEM;
2945                                 break;
2946                         }
2947                         if (*c2 && type1 != type2)
2948                                 return type1 == t_PATH ? 1 : -1;
2949                 }
2950                 if (!*c2) {
2951                         switch (state2) {
2952                         case s_DIR:
2953                                 state2 = s_SLASH;
2954                                 c2 = (uchar*)"/";
2955                                 break;
2956                         case s_SLASH:
2957                                 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2958                                 c2 = (const uchar*)f2->basename;
2959                                 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2960                                         type2 = t_ITEM;
2961                                         state2 = s_TRAILING;
2962                                         c2 = (uchar*)"";
2963                                 } else
2964                                         state2 = s_BASE;
2965                                 break;
2966                         case s_BASE:
2967                                 state2 = s_TRAILING;
2968                                 if (type2 == t_PATH) {
2969                                         c2 = (uchar*)"/";
2970                                         break;
2971                                 }
2972                                 /* FALL THROUGH */
2973                         case s_TRAILING:
2974                                 found_prefix = 1;
2975                                 if (!*c1)
2976                                         return 0;
2977                                 type2 = t_ITEM;
2978                                 break;
2979                         }
2980                         if (type1 != type2)
2981                                 return type1 == t_PATH ? 1 : -1;
2982                 }
2983         } while ((dif = (int)*c1++ - (int)*c2++) == 0);
2984
2985         return dif;
2986 }
2987
2988 /* Returns 1 if f1's filename has all of f2's filename as a prefix.  This does
2989  * not match if f2's basename is not an exact match of a path element in f1.
2990  * E.g. /path/foo is not a prefix of /path/foobar/baz, but /path/foobar is. */
2991 int f_name_has_prefix(const struct file_struct *f1, const struct file_struct *f2)
2992 {
2993         found_prefix = 0;
2994         f_name_cmp(f1, f2);
2995         return found_prefix;
2996 }
2997
2998 char *f_name_buf(void)
2999 {
3000         static char names[5][MAXPATHLEN];
3001         static unsigned int n;
3002
3003         n = (n + 1) % (sizeof names / sizeof names[0]);
3004
3005         return names[n];
3006 }
3007
3008 /* Return a copy of the full filename of a flist entry, using the indicated
3009  * buffer or one of 5 static buffers if fbuf is NULL.  No size-checking is
3010  * done because we checked the size when creating the file_struct entry.
3011  */
3012 char *f_name(const struct file_struct *f, char *fbuf)
3013 {
3014         if (!f || !F_IS_ACTIVE(f))
3015                 return NULL;
3016
3017         if (!fbuf)
3018                 fbuf = f_name_buf();
3019
3020         if (f->dirname) {
3021                 int len = strlen(f->dirname);
3022                 memcpy(fbuf, f->dirname, len);
3023                 fbuf[len] = '/';
3024                 strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
3025         } else
3026                 strlcpy(fbuf, f->basename, MAXPATHLEN);
3027
3028         return fbuf;
3029 }
3030
3031 /* Do a non-recursive scan of the named directory, possibly ignoring all
3032  * exclude rules except for the daemon's.  If "dlen" is >=0, it is the length
3033  * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
3034  * buffer (the functions we call will append names onto the end, but the old
3035  * dir value will be restored on exit). */
3036 struct file_list *get_dirlist(char *dirname, int dlen, int ignore_filter_rules)
3037 {
3038         struct file_list *dirlist;
3039         char dirbuf[MAXPATHLEN];
3040         int save_recurse = recurse;
3041         int save_xfer_dirs = xfer_dirs;
3042         int save_prune_empty_dirs = prune_empty_dirs;
3043
3044         if (dlen < 0) {
3045                 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
3046                 if (dlen >= MAXPATHLEN)
3047                         return NULL;
3048                 dirname = dirbuf;
3049         }
3050
3051         dirlist = flist_new(FLIST_TEMP, "get_dirlist");
3052
3053         recurse = 0;
3054         xfer_dirs = 1;
3055         send_directory(ignore_filter_rules ? -2 : -1, dirlist, dirname, dlen, 0);
3056         xfer_dirs = save_xfer_dirs;
3057         recurse = save_recurse;
3058         if (INFO_GTE(PROGRESS, 1))
3059                 flist_count_offset += dirlist->used;
3060
3061         prune_empty_dirs = 0;
3062         dirlist->sorted = dirlist->files;
3063         flist_sort_and_clean(dirlist, 0);
3064         prune_empty_dirs = save_prune_empty_dirs;
3065
3066         if (DEBUG_GTE(FLIST, 3))
3067                 output_flist(dirlist);
3068
3069         return dirlist;
3070 }