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) 2002-2007 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 version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
  21  */
  22
  23 #include "rsync.h"
  24 #include "rounding.h"
  25 #include "io.h"
  26
  27 extern int verbose;
  28 extern int list_only;
  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 do_progress;
  36 extern int always_checksum;
  37 extern int module_id;
  38 extern int ignore_errors;
  39 extern int numeric_ids;
  40 extern int recurse;
  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_acls;
  47 extern int preserve_xattrs;
  48 extern int preserve_links;
  49 extern int preserve_hard_links;
  50 extern int preserve_devices;
  51 extern int preserve_specials;
  52 extern int preserve_uid;
  53 extern int preserve_gid;
  54 extern int relative_paths;
  55 extern int implied_dirs;
  56 extern int file_extra_cnt;
  57 extern int ignore_perishable;
  58 extern int non_perishable_cnt;
  59 extern int prune_empty_dirs;
  60 extern int copy_links;
  61 extern int copy_unsafe_links;
  62 extern int protocol_version;
  63 extern int sanitize_paths;
  64 extern struct stats stats;
  65
  66 extern char curr_dir[MAXPATHLEN];
  67
  68 extern struct chmod_mode_struct *chmod_modes;
  69
  70 extern struct filter_list_struct filter_list;
  71 extern struct filter_list_struct server_filter_list;
  72
  73 #ifdef ICONV_OPTION
  74 extern int ic_ndx;
  75 extern int need_unsorted_flist;
  76 extern iconv_t ic_send, ic_recv;
  77 #endif
  78
  79 int io_error;
  80 int checksum_len;
  81 dev_t filesystem_dev; /* used to implement -x */
  82
  83 struct file_list *cur_flist, *first_flist, *dir_flist;
  84 int send_dir_ndx = -1, send_dir_depth = 0;
  85 int flist_cnt = 0; /* how many (non-tmp) file list objects exist */
  86 int file_total = 0; /* total of all active items over all file-lists */
  87 int flist_eof = 0; /* all the file-lists are now known */
  88
  89 /* The tmp_* vars are used as a cache area by make_file() to store data
  90  * that the sender doesn't need to remember in its file list.  The data
  91  * will survive just long enough to be used by send_file_entry(). */
  92 static dev_t tmp_rdev;
  93 #ifdef SUPPORT_HARD_LINKS
  94 static int64 tmp_dev, tmp_ino;
  95 #endif
  96 static char tmp_sum[MAX_DIGEST_LEN];
  97
  98 static char empty_sum[MAX_DIGEST_LEN];
  99 static int flist_count_offset; /* for --delete --progress */
 100
 101 static void clean_flist(struct file_list *flist, int strip_root);
 102 static void output_flist(struct file_list *flist);
 103
 104 void init_flist(void)
 105 {
 106         if (verbose > 4) {
 107                 rprintf(FINFO, "FILE_STRUCT_LEN=%d, EXTRA_LEN=%d\n",
 108                         (int)FILE_STRUCT_LEN, (int)EXTRA_LEN);
 109         }
 110         checksum_len = protocol_version < 21 ? 2
 111                      : protocol_version < 30 ? MD4_DIGEST_LEN
 112                      : MD5_DIGEST_LEN;
 113 }
 114
 115 static int show_filelist_p(void)
 116 {
 117         return verbose && xfer_dirs && !am_server && !inc_recurse;
 118 }
 119
 120 static void start_filelist_progress(char *kind)
 121 {
 122         rprintf(FCLIENT, "%s ... ", kind);
 123         if (verbose > 1 || do_progress)
 124                 rprintf(FCLIENT, "\n");
 125         rflush(FINFO);
 126 }
 127
 128 static void emit_filelist_progress(int count)
 129 {
 130         rprintf(FCLIENT, " %d files...\r", count);
 131 }
 132
 133 static void maybe_emit_filelist_progress(int count)
 134 {
 135         if (do_progress && show_filelist_p() && (count % 100) == 0)
 136                 emit_filelist_progress(count);
 137 }
 138
 139 static void finish_filelist_progress(const struct file_list *flist)
 140 {
 141         if (do_progress) {
 142                 /* This overwrites the progress line */
 143                 rprintf(FINFO, "%d file%sto consider\n",
 144                         flist->count, flist->count == 1 ? " " : "s ");
 145         } else
 146                 rprintf(FINFO, "done\n");
 147 }
 148
 149 void show_flist_stats(void)
 150 {
 151         /* Nothing yet */
 152 }
 153
 154 static void list_file_entry(struct file_struct *f)
 155 {
 156         char permbuf[PERMSTRING_SIZE];
 157         double len;
 158
 159         if (!F_IS_ACTIVE(f)) {
 160                 /* this can happen if duplicate names were removed */
 161                 return;
 162         }
 163
 164         permstring(permbuf, f->mode);
 165         len = F_LENGTH(f);
 166
 167         /* TODO: indicate '+' if the entry has an ACL. */
 168
 169 #ifdef SUPPORT_LINKS
 170         if (preserve_links && S_ISLNK(f->mode)) {
 171                 rprintf(FINFO, "%s %11.0f %s %s -> %s\n",
 172                         permbuf, len, timestring(f->modtime),
 173                         f_name(f, NULL), F_SYMLINK(f));
 174         } else
 175 #endif
 176         {
 177                 rprintf(FINFO, "%s %11.0f %s %s\n",
 178                         permbuf, len, timestring(f->modtime),
 179                         f_name(f, NULL));
 180         }
 181 }
 182
 183 /* Stat either a symlink or its referent, depending on the settings of
 184  * copy_links, copy_unsafe_links, etc.  Returns -1 on error, 0 on success.
 185  *
 186  * If path is the name of a symlink, then the linkbuf buffer (which must hold
 187  * MAXPATHLEN chars) will be set to the symlink's target string.
 188  *
 189  * The stat structure pointed to by stp will contain information about the
 190  * link or the referent as appropriate, if they exist. */
 191 static int readlink_stat(const char *path, STRUCT_STAT *stp, char *linkbuf)
 192 {
 193 #ifdef SUPPORT_LINKS
 194         if (link_stat(path, stp, copy_dirlinks) < 0)
 195                 return -1;
 196         if (S_ISLNK(stp->st_mode)) {
 197                 int llen = readlink(path, linkbuf, MAXPATHLEN - 1);
 198                 if (llen < 0)
 199                         return -1;
 200                 linkbuf[llen] = '\0';
 201                 if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
 202                         if (verbose > 1) {
 203                                 rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
 204                                         path, linkbuf);
 205                         }
 206                         return x_stat(path, stp, NULL);
 207                 }
 208         }
 209         return 0;
 210 #else
 211         return x_stat(path, stp, NULL);
 212 #endif
 213 }
 214
 215 int link_stat(const char *path, STRUCT_STAT *stp, int follow_dirlinks)
 216 {
 217 #ifdef SUPPORT_LINKS
 218         if (copy_links)
 219                 return x_stat(path, stp, NULL);
 220         if (x_lstat(path, stp, NULL) < 0)
 221                 return -1;
 222         if (follow_dirlinks && S_ISLNK(stp->st_mode)) {
 223                 STRUCT_STAT st;
 224                 if (x_stat(path, &st, NULL) == 0 && S_ISDIR(st.st_mode))
 225                         *stp = st;
 226         }
 227         return 0;
 228 #else
 229         return x_stat(path, stp, NULL);
 230 #endif
 231 }
 232
 233 /* This function is used to check if a file should be included/excluded
 234  * from the list of files based on its name and type etc.  The value of
 235  * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
 236 static int is_excluded(char *fname, int is_dir, int filter_level)
 237 {
 238 #if 0 /* This currently never happens, so avoid a useless compare. */
 239         if (filter_level == NO_FILTERS)
 240                 return 0;
 241 #endif
 242         if (fname) {
 243                 /* never exclude '.', even if somebody does --exclude '*' */
 244                 if (fname[0] == '.' && !fname[1])
 245                         return 0;
 246                 /* Handle the -R version of the '.' dir. */
 247                 if (fname[0] == '/') {
 248                         int len = strlen(fname);
 249                         if (fname[len-1] == '.' && fname[len-2] == '/')
 250                                 return 0;
 251                 }
 252         }
 253         if (server_filter_list.head
 254             && check_filter(&server_filter_list, fname, is_dir) < 0)
 255                 return 1;
 256         if (filter_level != ALL_FILTERS)
 257                 return 0;
 258         if (filter_list.head
 259             && check_filter(&filter_list, fname, is_dir) < 0)
 260                 return 1;
 261         return 0;
 262 }
 263
 264 static void send_directory(int f, struct file_list *flist,
 265                            char *fbuf, int len, int flags);
 266
 267 static const char *pathname, *orig_dir;
 268 static int pathname_len;
 269
 270
 271 /**
 272  * Make sure @p flist is big enough to hold at least @p flist->count
 273  * entries.
 274  **/
 275 void flist_expand(struct file_list *flist)
 276 {
 277         struct file_struct **new_ptr;
 278
 279         if (flist->count < flist->malloced)
 280                 return;
 281
 282         if (flist->malloced < FLIST_START)
 283                 flist->malloced = FLIST_START;
 284         else if (flist->malloced >= FLIST_LINEAR)
 285                 flist->malloced += FLIST_LINEAR;
 286         else
 287                 flist->malloced *= 2;
 288
 289         /* In case count jumped or we are starting the list
 290          * with a known size just set it. */
 291         if (flist->malloced < flist->count)
 292                 flist->malloced = flist->count;
 293
 294 #ifdef ICONV_OPTION
 295         if (inc_recurse && flist == dir_flist && need_unsorted_flist) {
 296                 flist->sorted = realloc_array(flist->sorted, struct file_struct *,
 297                                               flist->malloced);
 298         }
 299 #endif
 300
 301         new_ptr = realloc_array(flist->files, struct file_struct *,
 302                                 flist->malloced);
 303
 304         if (verbose >= 2 && flist->malloced != FLIST_START) {
 305                 rprintf(FCLIENT, "[%s] expand file_list to %.0f bytes, did%s move\n",
 306                     who_am_i(),
 307                     (double)sizeof flist->files[0] * flist->malloced,
 308                     (new_ptr == flist->files) ? " not" : "");
 309         }
 310
 311         flist->files = new_ptr;
 312
 313         if (!flist->files)
 314                 out_of_memory("flist_expand");
 315 }
 316
 317 int push_pathname(const char *dir, int len)
 318 {
 319         if (dir == pathname)
 320                 return 1;
 321
 322         if (!orig_dir)
 323                 orig_dir = strdup(curr_dir);
 324
 325         if (pathname && !pop_dir(orig_dir)) {
 326                 rsyserr(FERROR, errno, "pop_dir %s failed",
 327                         full_fname(orig_dir));
 328                 exit_cleanup(RERR_FILESELECT);
 329         }
 330
 331         if (dir && !push_dir(dir, 0)) {
 332                 io_error |= IOERR_GENERAL;
 333                 rsyserr(FERROR, errno, "push_dir %s failed in %s",
 334                         full_fname(dir), curr_dir);
 335                 return 0;
 336         }
 337
 338         pathname = dir;
 339         pathname_len = len >= 0 ? len : dir ? (int)strlen(dir) : 0;
 340
 341         return 1;
 342 }
 343
 344 static void send_file_entry(int f, struct file_struct *file, int ndx)
 345 {
 346         static time_t modtime;
 347         static mode_t mode;
 348         static int64 dev;
 349         static dev_t rdev;
 350         static uint32 rdev_major;
 351         static uid_t uid;
 352         static gid_t gid;
 353         static char *user_name, *group_name;
 354         static char lastname[MAXPATHLEN];
 355         char fname[MAXPATHLEN];
 356         int first_hlink_ndx = -1;
 357         int l1, l2;
 358         int flags;
 359
 360 #ifdef ICONV_OPTION
 361         if (ic_send != (iconv_t)-1) {
 362                 ICONV_CONST char *ibuf;
 363                 char *obuf = fname;
 364                 size_t ocnt = MAXPATHLEN, icnt;
 365
 366                 iconv(ic_send, NULL,0, NULL,0);
 367                 if ((ibuf = (ICONV_CONST char *)file->dirname) != NULL) {
 368                     icnt = strlen(ibuf);
 369                     ocnt--; /* pre-subtract the space for the '/' */
 370                     if (iconv(ic_send, &ibuf,&icnt, &obuf,&ocnt) == (size_t)-1)
 371                         goto convert_error;
 372                     *obuf++ = '/';
 373                 }
 374
 375                 ibuf = (ICONV_CONST char *)file->basename;
 376                 icnt = strlen(ibuf);
 377                 if (iconv(ic_send, &ibuf,&icnt, &obuf,&ocnt) == (size_t)-1) {
 378                   convert_error:
 379                         io_error |= IOERR_GENERAL;
 380                         rprintf(FINFO,
 381                             "[%s] cannot convert filename: %s (%s)\n",
 382                             who_am_i(), f_name(file, fname), strerror(errno));
 383                         return;
 384                 }
 385                 *obuf = '\0';
 386         } else
 387 #endif
 388                 f_name(file, fname);
 389
 390         flags = file->flags & FLAG_TOP_DIR; /* FLAG_TOP_DIR == XMIT_TOP_DIR */
 391
 392         if (file->mode == mode)
 393                 flags |= XMIT_SAME_MODE;
 394         else
 395                 mode = file->mode;
 396         if ((preserve_devices && IS_DEVICE(mode))
 397          || (preserve_specials && IS_SPECIAL(mode))) {
 398                 if (protocol_version < 28) {
 399                         if (tmp_rdev == rdev)
 400                                 flags |= XMIT_SAME_RDEV_pre28;
 401                         else
 402                                 rdev = tmp_rdev;
 403                 } else {
 404                         rdev = tmp_rdev;
 405                         if ((uint32)major(rdev) == rdev_major)
 406                                 flags |= XMIT_SAME_RDEV_MAJOR;
 407                         else
 408                                 rdev_major = major(rdev);
 409                         if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu)
 410                                 flags |= XMIT_RDEV_MINOR_8_pre30;
 411                 }
 412         } else if (protocol_version < 28)
 413                 rdev = MAKEDEV(0, 0);
 414         if (preserve_uid) {
 415                 if ((uid_t)F_OWNER(file) == uid && *lastname)
 416                         flags |= XMIT_SAME_UID;
 417                 else {
 418                         uid = F_OWNER(file);
 419                         if (preserve_uid && !numeric_ids) {
 420                                 user_name = add_uid(uid);
 421                                 if (inc_recurse && user_name)
 422                                         flags |= XMIT_USER_NAME_FOLLOWS;
 423                         }
 424                 }
 425         }
 426         if (preserve_gid) {
 427                 if ((gid_t)F_GROUP(file) == gid && *lastname)
 428                         flags |= XMIT_SAME_GID;
 429                 else {
 430                         gid = F_GROUP(file);
 431                         if (preserve_gid && !numeric_ids) {
 432                                 group_name = add_gid(gid);
 433                                 if (inc_recurse && group_name)
 434                                         flags |= XMIT_GROUP_NAME_FOLLOWS;
 435                         }
 436                 }
 437         }
 438         if (file->modtime == modtime)
 439                 flags |= XMIT_SAME_TIME;
 440         else
 441                 modtime = file->modtime;
 442
 443 #ifdef SUPPORT_HARD_LINKS
 444         if (tmp_dev != 0) {
 445                 if (protocol_version >= 30) {
 446                         struct idev_node *np = idev_node(tmp_dev, tmp_ino);
 447                         first_hlink_ndx = (int32)(long)np->data - 1;
 448                         if (first_hlink_ndx < 0) {
 449                                 np->data = (void*)(long)(ndx + 1);
 450                                 flags |= XMIT_HLINK_FIRST;
 451                         }
 452                         flags |= XMIT_HLINKED;
 453                 } else {
 454                         if (tmp_dev == dev) {
 455                                 if (protocol_version >= 28)
 456                                         flags |= XMIT_SAME_DEV_pre30;
 457                         } else
 458                                 dev = tmp_dev;
 459                         flags |= XMIT_HLINKED;
 460                 }
 461         }
 462 #endif
 463
 464         for (l1 = 0;
 465             lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
 466             l1++) {}
 467         l2 = strlen(fname+l1);
 468
 469         if (l1 > 0)
 470                 flags |= XMIT_SAME_NAME;
 471         if (l2 > 255)
 472                 flags |= XMIT_LONG_NAME;
 473
 474         /* We must make sure we don't send a zero flag byte or the
 475          * other end will terminate the flist transfer.  Note that
 476          * the use of XMIT_TOP_DIR on a non-dir has no meaning, so
 477          * it's harmless way to add a bit to the first flag byte. */
 478         if (protocol_version >= 28) {
 479                 if (!flags && !S_ISDIR(mode))
 480                         flags |= XMIT_TOP_DIR;
 481                 if ((flags & 0xFF00) || !flags) {
 482                         flags |= XMIT_EXTENDED_FLAGS;
 483                         write_shortint(f, flags);
 484                 } else
 485                         write_byte(f, flags);
 486         } else {
 487                 if (!(flags & 0xFF))
 488                         flags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
 489                 write_byte(f, flags);
 490         }
 491         if (flags & XMIT_SAME_NAME)
 492                 write_byte(f, l1);
 493         if (flags & XMIT_LONG_NAME)
 494                 write_varint30(f, l2);
 495         else
 496                 write_byte(f, l2);
 497         write_buf(f, fname + l1, l2);
 498
 499         if (first_hlink_ndx >= 0) {
 500                 write_varint30(f, first_hlink_ndx);
 501                 goto the_end;
 502         }
 503
 504         write_varlong30(f, F_LENGTH(file), 3);
 505         if (!(flags & XMIT_SAME_TIME)) {
 506                 if (protocol_version >= 30)
 507                         write_varlong(f, modtime, 4);
 508                 else
 509                         write_int(f, modtime);
 510         }
 511         if (!(flags & XMIT_SAME_MODE))
 512                 write_int(f, to_wire_mode(mode));
 513         if (preserve_uid && !(flags & XMIT_SAME_UID)) {
 514                 if (protocol_version < 30)
 515                         write_int(f, uid);
 516                 else {
 517                         write_varint(f, uid);
 518                         if (flags & XMIT_USER_NAME_FOLLOWS) {
 519                                 int len = strlen(user_name);
 520                                 write_byte(f, len);
 521                                 write_buf(f, user_name, len);
 522                         }
 523                 }
 524         }
 525         if (preserve_gid && !(flags & XMIT_SAME_GID)) {
 526                 if (protocol_version < 30)
 527                         write_int(f, gid);
 528                 else {
 529                         write_varint(f, gid);
 530                         if (flags & XMIT_GROUP_NAME_FOLLOWS) {
 531                                 int len = strlen(group_name);
 532                                 write_byte(f, len);
 533                                 write_buf(f, group_name, len);
 534                         }
 535                 }
 536         }
 537         if ((preserve_devices && IS_DEVICE(mode))
 538          || (preserve_specials && IS_SPECIAL(mode))) {
 539                 if (protocol_version < 28) {
 540                         if (!(flags & XMIT_SAME_RDEV_pre28))
 541                                 write_int(f, (int)rdev);
 542                 } else {
 543                         if (!(flags & XMIT_SAME_RDEV_MAJOR))
 544                                 write_varint30(f, major(rdev));
 545                         if (protocol_version >= 30)
 546                                 write_varint(f, minor(rdev));
 547                         else if (flags & XMIT_RDEV_MINOR_8_pre30)
 548                                 write_byte(f, minor(rdev));
 549                         else
 550                                 write_int(f, minor(rdev));
 551                 }
 552         }
 553
 554 #ifdef SUPPORT_LINKS
 555         if (preserve_links && S_ISLNK(mode)) {
 556                 const char *sl = F_SYMLINK(file);
 557                 int len = strlen(sl);
 558                 write_varint30(f, len);
 559                 write_buf(f, sl, len);
 560         }
 561 #endif
 562
 563 #ifdef SUPPORT_HARD_LINKS
 564         if (tmp_dev != 0 && protocol_version < 30) {
 565                 if (protocol_version < 26) {
 566                         /* 32-bit dev_t and ino_t */
 567                         write_int(f, (int32)dev);
 568                         write_int(f, (int32)tmp_ino);
 569                 } else {
 570                         /* 64-bit dev_t and ino_t */
 571                         if (!(flags & XMIT_SAME_DEV_pre30))
 572                                 write_longint(f, dev);
 573                         write_longint(f, tmp_ino);
 574                 }
 575         }
 576 #endif
 577
 578         if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
 579                 const char *sum;
 580                 if (S_ISREG(mode))
 581                         sum = tmp_sum;
 582                 else {
 583                         /* Prior to 28, we sent a useless set of nulls. */
 584                         sum = empty_sum;
 585                 }
 586                 write_buf(f, sum, checksum_len);
 587         }
 588
 589   the_end:
 590         strlcpy(lastname, fname, MAXPATHLEN);
 591
 592         if (S_ISREG(mode) || S_ISLNK(mode))
 593                 stats.total_size += F_LENGTH(file);
 594 }
 595
 596 static struct file_struct *recv_file_entry(struct file_list *flist,
 597                                            int xflags, int f)
 598 {
 599         static int64 modtime;
 600         static mode_t mode;
 601         static int64 dev;
 602         static dev_t rdev;
 603         static uint32 rdev_major;
 604         static uid_t uid;
 605         static gid_t gid;
 606         static uint16 gid_flags;
 607         static char lastname[MAXPATHLEN], *lastdir;
 608         static int lastdir_depth, lastdir_len = -1;
 609         static unsigned int del_hier_name_len = 0;
 610         static int in_del_hier = 0;
 611         char thisname[MAXPATHLEN];
 612         unsigned int l1 = 0, l2 = 0;
 613         int alloc_len, basename_len, linkname_len;
 614         int extra_len = file_extra_cnt * EXTRA_LEN;
 615         int first_hlink_ndx = -1;
 616         OFF_T file_length;
 617         const char *basename;
 618         struct file_struct *file;
 619         alloc_pool_t *pool;
 620         char *bp;
 621
 622         if (xflags & XMIT_SAME_NAME)
 623                 l1 = read_byte(f);
 624
 625         if (xflags & XMIT_LONG_NAME)
 626                 l2 = read_varint30(f);
 627         else
 628                 l2 = read_byte(f);
 629
 630         if (l2 >= MAXPATHLEN - l1) {
 631                 rprintf(FERROR,
 632                         "overflow: xflags=0x%x l1=%d l2=%d lastname=%s [%s]\n",
 633                         xflags, l1, l2, lastname, who_am_i());
 634                 overflow_exit("recv_file_entry");
 635         }
 636
 637         strlcpy(thisname, lastname, l1 + 1);
 638         read_sbuf(f, &thisname[l1], l2);
 639         thisname[l1 + l2] = 0;
 640
 641         /* Abuse basename_len for a moment... */
 642         basename_len = strlcpy(lastname, thisname, MAXPATHLEN);
 643
 644 #ifdef ICONV_OPTION
 645         if (ic_recv != (iconv_t)-1) {
 646                 char *obuf = thisname;
 647                 ICONV_CONST char *ibuf = (ICONV_CONST char *)lastname;
 648                 size_t ocnt = MAXPATHLEN, icnt = basename_len;
 649
 650                 if (icnt >= MAXPATHLEN) {
 651                         errno = E2BIG;
 652                         goto convert_error;
 653                 }
 654
 655                 iconv(ic_recv, NULL,0, NULL,0);
 656                 if (iconv(ic_recv, &ibuf,&icnt, &obuf,&ocnt) == (size_t)-1) {
 657                   convert_error:
 658                         io_error |= IOERR_GENERAL;
 659                         rprintf(FINFO,
 660                             "[%s] cannot convert filename: %s (%s)\n",
 661                             who_am_i(), lastname, strerror(errno));
 662                         obuf = thisname;
 663                 }
 664                 *obuf = '\0';
 665         }
 666 #endif
 667
 668         clean_fname(thisname, 0);
 669
 670         if (sanitize_paths)
 671                 sanitize_path(thisname, thisname, "", 0, NULL);
 672
 673         if ((basename = strrchr(thisname, '/')) != NULL) {
 674                 int len = basename++ - thisname;
 675                 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
 676                         lastdir = new_array(char, len + 1);
 677                         memcpy(lastdir, thisname, len);
 678                         lastdir[len] = '\0';
 679                         lastdir_len = len;
 680                         lastdir_depth = count_dir_elements(lastdir);
 681                 }
 682         } else
 683                 basename = thisname;
 684         basename_len = strlen(basename) + 1; /* count the '\0' */
 685
 686 #ifdef SUPPORT_HARD_LINKS
 687         if (protocol_version >= 30
 688          && BITS_SETnUNSET(xflags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
 689                 struct file_struct *first;
 690                 first_hlink_ndx = read_varint30(f);
 691                 if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->count) {
 692                         rprintf(FERROR,
 693                                 "hard-link reference out of range: %d (%d)\n",
 694                                 first_hlink_ndx, flist->count);
 695                         exit_cleanup(RERR_PROTOCOL);
 696                 }
 697                 first = flist->files[first_hlink_ndx];
 698                 file_length = F_LENGTH(first);
 699                 modtime = first->modtime;
 700                 mode = first->mode;
 701                 if (preserve_uid)
 702                         uid = F_OWNER(first);
 703                 if (preserve_gid)
 704                         gid = F_GROUP(first);
 705                 if ((preserve_devices && IS_DEVICE(mode))
 706                  || (preserve_specials && IS_SPECIAL(mode))) {
 707                         uint32 *devp = F_RDEV_P(first);
 708                         rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
 709                         extra_len += 2 * EXTRA_LEN;
 710                 }
 711                 if (preserve_links && S_ISLNK(mode))
 712                         linkname_len = strlen(F_SYMLINK(first)) + 1;
 713                 else
 714                         linkname_len = 0;
 715                 goto create_object;
 716         }
 717 #endif
 718
 719         file_length = read_varlong30(f, 3);
 720         if (!(xflags & XMIT_SAME_TIME)) {
 721                 if (protocol_version >= 30) {
 722                         modtime = read_varlong(f, 4);
 723 #if SIZEOF_TIME_T < SIZEOF_INT64
 724                         if ((modtime > INT_MAX || modtime < INT_MIN) && !am_generator) {
 725                                 rprintf(FERROR,
 726                                     "Time value of %s truncated on receiver.\n",
 727                                     lastname);
 728                         }
 729 #endif
 730                 } else
 731                         modtime = read_int(f);
 732         }
 733         if (!(xflags & XMIT_SAME_MODE))
 734                 mode = from_wire_mode(read_int(f));
 735
 736         if (chmod_modes && !S_ISLNK(mode))
 737                 mode = tweak_mode(mode, chmod_modes);
 738
 739         if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
 740                 if (protocol_version < 30)
 741                         uid = (uid_t)read_int(f);
 742                 else {
 743                         uid = (uid_t)read_varint(f);
 744                         if (xflags & XMIT_USER_NAME_FOLLOWS)
 745                                 uid = recv_user_name(f, uid);
 746                         else if (inc_recurse && am_root && !numeric_ids)
 747                                 uid = match_uid(uid);
 748                 }
 749         }
 750         if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
 751                 if (protocol_version < 30)
 752                         gid = (gid_t)read_int(f);
 753                 else {
 754                         gid = (gid_t)read_varint(f);
 755                         gid_flags = 0;
 756                         if (xflags & XMIT_GROUP_NAME_FOLLOWS)
 757                                 gid = recv_group_name(f, gid, &gid_flags);
 758                         else if (inc_recurse && (!am_root || !numeric_ids))
 759                                 gid = match_gid(gid, &gid_flags);
 760                 }
 761         }
 762
 763         if ((preserve_devices && IS_DEVICE(mode))
 764          || (preserve_specials && IS_SPECIAL(mode))) {
 765                 if (protocol_version < 28) {
 766                         if (!(xflags & XMIT_SAME_RDEV_pre28))
 767                                 rdev = (dev_t)read_int(f);
 768                 } else {
 769                         uint32 rdev_minor;
 770                         if (!(xflags & XMIT_SAME_RDEV_MAJOR))
 771                                 rdev_major = read_varint30(f);
 772                         if (protocol_version >= 30)
 773                                 rdev_minor = read_varint(f);
 774                         else if (xflags & XMIT_RDEV_MINOR_8_pre30)
 775                                 rdev_minor = read_byte(f);
 776                         else
 777                                 rdev_minor = read_int(f);
 778                         rdev = MAKEDEV(rdev_major, rdev_minor);
 779                 }
 780                 extra_len += 2 * EXTRA_LEN;
 781                 file_length = 0;
 782         } else if (protocol_version < 28)
 783                 rdev = MAKEDEV(0, 0);
 784
 785 #ifdef SUPPORT_LINKS
 786         if (preserve_links && S_ISLNK(mode)) {
 787                 linkname_len = read_varint30(f) + 1; /* count the '\0' */
 788                 if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
 789                         rprintf(FERROR, "overflow: linkname_len=%d\n",
 790                                 linkname_len - 1);
 791                         overflow_exit("recv_file_entry");
 792                 }
 793         }
 794         else
 795 #endif
 796                 linkname_len = 0;
 797
 798 #ifdef SUPPORT_HARD_LINKS
 799   create_object:
 800         if (preserve_hard_links) {
 801                 if (protocol_version < 28 && S_ISREG(mode))
 802                         xflags |= XMIT_HLINKED;
 803                 if (xflags & XMIT_HLINKED)
 804                         extra_len += EXTRA_LEN;
 805         }
 806 #endif
 807
 808 #ifdef SUPPORT_ACLS
 809         /* We need one or two index int32s when we're preserving ACLs. */
 810         if (preserve_acls)
 811                 extra_len += (S_ISDIR(mode) ? 2 : 1) * EXTRA_LEN;
 812 #endif
 813
 814         if (always_checksum && S_ISREG(mode))
 815                 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
 816
 817         if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
 818                 extra_len += EXTRA_LEN;
 819
 820 #if EXTRA_ROUNDING > 0
 821         if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
 822                 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
 823 #endif
 824
 825         if (inc_recurse && S_ISDIR(mode)) {
 826                 if (one_file_system) {
 827                         /* Room to save the dir's device for -x */
 828                         extra_len += 2 * EXTRA_LEN;
 829                 }
 830                 pool = dir_flist->file_pool;
 831         } else
 832                 pool = flist->file_pool;
 833
 834         alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
 835                   + linkname_len;
 836         bp = pool_alloc(pool, alloc_len, "recv_file_entry");
 837
 838         memset(bp, 0, extra_len + FILE_STRUCT_LEN);
 839         bp += extra_len;
 840         file = (struct file_struct *)bp;
 841         bp += FILE_STRUCT_LEN;
 842
 843         memcpy(bp, basename, basename_len);
 844         bp += basename_len + linkname_len; /* skip space for symlink too */
 845
 846 #ifdef SUPPORT_HARD_LINKS
 847         if (xflags & XMIT_HLINKED)
 848                 file->flags |= FLAG_HLINKED;
 849 #endif
 850         file->modtime = (time_t)modtime;
 851         file->len32 = (uint32)file_length;
 852         if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
 853                 file->flags |= FLAG_LENGTH64;
 854                 OPT_EXTRA(file, 0)->unum = (uint32)(file_length >> 32);
 855         }
 856         file->mode = mode;
 857         if (preserve_uid)
 858                 F_OWNER(file) = uid;
 859         if (preserve_gid) {
 860                 F_GROUP(file) = gid;
 861                 file->flags |= gid_flags;
 862         }
 863 #ifdef ICONV_OPTION
 864         if (ic_ndx)
 865                 F_NDX(file) = flist->count + flist->ndx_start;
 866 #endif
 867
 868         if (basename != thisname) {
 869                 file->dirname = lastdir;
 870                 F_DEPTH(file) = lastdir_depth + 1;
 871         } else
 872                 F_DEPTH(file) = 1;
 873
 874         if (S_ISDIR(mode)) {
 875                 if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
 876                         F_DEPTH(file)--;
 877                 if (xflags & XMIT_TOP_DIR) {
 878                         in_del_hier = recurse;
 879                         del_hier_name_len = F_DEPTH(file) == 0 ? 0 : l1 + l2;
 880                         if (relative_paths && del_hier_name_len > 2
 881                             && lastname[del_hier_name_len-1] == '.'
 882                             && lastname[del_hier_name_len-2] == '/')
 883                                 del_hier_name_len -= 2;
 884                         file->flags |= FLAG_TOP_DIR | FLAG_XFER_DIR;
 885                 } else if (in_del_hier) {
 886                         if (!relative_paths || !del_hier_name_len
 887                          || (l1 >= del_hier_name_len
 888                           && lastname[del_hier_name_len] == '/'))
 889                                 file->flags |= FLAG_XFER_DIR;
 890                         else
 891                                 in_del_hier = 0;
 892                 }
 893         }
 894
 895         if ((preserve_devices && IS_DEVICE(mode))
 896          || (preserve_specials && IS_SPECIAL(mode))) {
 897                 uint32 *devp = F_RDEV_P(file);
 898                 DEV_MAJOR(devp) = major(rdev);
 899                 DEV_MINOR(devp) = minor(rdev);
 900         }
 901
 902 #ifdef SUPPORT_LINKS
 903         if (linkname_len) {
 904                 bp = (char*)file->basename + basename_len;
 905                 if (first_hlink_ndx >= 0) {
 906                         struct file_struct *first = flist->files[first_hlink_ndx];
 907                         memcpy(bp, F_SYMLINK(first), linkname_len);
 908                 } else
 909                         read_sbuf(f, bp, linkname_len - 1);
 910                 if (sanitize_paths)
 911                         sanitize_path(bp, bp, "", lastdir_depth, NULL);
 912         }
 913 #endif
 914
 915 #ifdef SUPPORT_HARD_LINKS
 916         if (preserve_hard_links && xflags & XMIT_HLINKED) {
 917                 if (protocol_version >= 30) {
 918                         F_HL_GNUM(file) = xflags & XMIT_HLINK_FIRST
 919                                         ? flist->count : first_hlink_ndx;
 920                 } else {
 921                         static int32 cnt = 0;
 922                         struct idev_node *np;
 923                         int64 ino;
 924                         int32 ndx;
 925                         if (protocol_version < 26) {
 926                                 dev = read_int(f);
 927                                 ino = read_int(f);
 928                         } else {
 929                                 if (!(xflags & XMIT_SAME_DEV_pre30))
 930                                         dev = read_longint(f);
 931                                 ino = read_longint(f);
 932                         }
 933                         np = idev_node(dev, ino);
 934                         ndx = (int32)(long)np->data - 1;
 935                         if (ndx < 0) {
 936                                 ndx = cnt++;
 937                                 np->data = (void*)(long)cnt;
 938                         }
 939                         F_HL_GNUM(file) = ndx;
 940                 }
 941         }
 942 #endif
 943
 944         if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
 945                 if (S_ISREG(mode))
 946                         bp = (char*)F_SUM(file);
 947                 else {
 948                         /* Prior to 28, we get a useless set of nulls. */
 949                         bp = tmp_sum;
 950                 }
 951                 if (first_hlink_ndx >= 0) {
 952                         struct file_struct *first = flist->files[first_hlink_ndx];
 953                         memcpy(bp, F_SUM(first), checksum_len);
 954                 } else
 955                         read_buf(f, bp, checksum_len);
 956         }
 957
 958 #ifdef SUPPORT_ACLS
 959         if (preserve_acls && !S_ISLNK(mode))
 960                 receive_acl(file, f);
 961 #endif
 962 #ifdef SUPPORT_XATTRS
 963         if (preserve_xattrs)
 964                 receive_xattr(file, f );
 965 #endif
 966
 967         if (S_ISREG(mode) || S_ISLNK(mode))
 968                 stats.total_size += file_length;
 969
 970         return file;
 971 }
 972
 973 /**
 974  * Create a file_struct for a named file by reading its stat()
 975  * information and performing extensive checks against global
 976  * options.
 977  *
 978  * @return the new file, or NULL if there was an error or this file
 979  * should be excluded.
 980  *
 981  * @todo There is a small optimization opportunity here to avoid
 982  * stat()ing the file in some circumstances, which has a certain cost.
 983  * We are called immediately after doing readdir(), and so we may
 984  * already know the d_type of the file.  We could for example avoid
 985  * statting directories if we're not recursing, but this is not a very
 986  * important case.  Some systems may not have d_type.
 987  **/
 988 struct file_struct *make_file(const char *fname, struct file_list *flist,
 989                               STRUCT_STAT *stp, int flags, int filter_level)
 990 {
 991         static char *lastdir;
 992         static int lastdir_len = -1;
 993         struct file_struct *file;
 994         STRUCT_STAT st;
 995         char thisname[MAXPATHLEN];
 996         char linkname[MAXPATHLEN];
 997         int alloc_len, basename_len, linkname_len;
 998         int extra_len = file_extra_cnt * EXTRA_LEN;
 999         const char *basename;
1000         char *bp;
1001
1002         if (strlcpy(thisname, fname, sizeof thisname)
1003             >= sizeof thisname - pathname_len) {
1004                 rprintf(FINFO, "skipping overly long name: %s\n", fname);
1005                 return NULL;
1006         }
1007         clean_fname(thisname, 0);
1008         if (sanitize_paths)
1009                 sanitize_path(thisname, thisname, "", 0, NULL);
1010
1011         if (stp && S_ISDIR(stp->st_mode)) {
1012                 st = *stp; /* Needed for "symlink/." with --relative. */
1013                 *linkname = '\0'; /* make IBM code checker happy */
1014         } else if (readlink_stat(thisname, &st, linkname) != 0) {
1015                 int save_errno = errno;
1016                 /* See if file is excluded before reporting an error. */
1017                 if (filter_level != NO_FILTERS
1018                  && (is_excluded(thisname, 0, filter_level)
1019                   || is_excluded(thisname, 1, filter_level))) {
1020                         if (ignore_perishable && save_errno != ENOENT)
1021                                 non_perishable_cnt++;
1022                         return NULL;
1023                 }
1024                 if (save_errno == ENOENT) {
1025 #ifdef SUPPORT_LINKS
1026                         /* Avoid "vanished" error if symlink points nowhere. */
1027                         if (copy_links && x_lstat(thisname, &st, NULL) == 0
1028                             && S_ISLNK(st.st_mode)) {
1029                                 io_error |= IOERR_GENERAL;
1030                                 rprintf(FERROR, "symlink has no referent: %s\n",
1031                                         full_fname(thisname));
1032                         } else
1033 #endif
1034                         {
1035                                 enum logcode c = am_daemon && protocol_version < 28
1036                                     ? FERROR : FINFO;
1037                                 io_error |= IOERR_VANISHED;
1038                                 rprintf(c, "file has vanished: %s\n",
1039                                         full_fname(thisname));
1040                         }
1041                 } else {
1042                         io_error |= IOERR_GENERAL;
1043                         rsyserr(FERROR, save_errno, "readlink %s failed",
1044                                 full_fname(thisname));
1045                 }
1046                 return NULL;
1047         }
1048
1049         /* backup.c calls us with filter_level set to NO_FILTERS. */
1050         if (filter_level == NO_FILTERS)
1051                 goto skip_filters;
1052
1053         if (S_ISDIR(st.st_mode) && !xfer_dirs) {
1054                 rprintf(FINFO, "skipping directory %s\n", thisname);
1055                 return NULL;
1056         }
1057
1058         /* -x only affects directories because we need to avoid recursing
1059          * into a mount-point directory, not to avoid copying a symlinked
1060          * file if -L (or similar) was specified. */
1061         if (one_file_system && st.st_dev != filesystem_dev
1062          && S_ISDIR(st.st_mode)) {
1063                 if (one_file_system > 1) {
1064                         if (verbose > 2) {
1065                                 rprintf(FINFO, "skipping mount-point dir %s\n",
1066                                         thisname);
1067                         }
1068                         return NULL;
1069                 }
1070                 flags |= FLAG_MOUNT_DIR;
1071         }
1072
1073         if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
1074                 if (ignore_perishable)
1075                         non_perishable_cnt++;
1076                 return NULL;
1077         }
1078
1079         if (lp_ignore_nonreadable(module_id)) {
1080 #ifdef SUPPORT_LINKS
1081                 if (!S_ISLNK(st.st_mode))
1082 #endif
1083                         if (access(thisname, R_OK) != 0)
1084                                 return NULL;
1085         }
1086
1087   skip_filters:
1088
1089         /* Only divert a directory in the main transfer. */
1090         if (flist && flist->prev && S_ISDIR(st.st_mode)
1091          && flags & FLAG_DIVERT_DIRS) {
1092                 flist = dir_flist;
1093                 /* Room for parent/sibling/next-child info. */
1094                 extra_len += 3 * EXTRA_LEN;
1095         }
1096
1097         if (verbose > 2) {
1098                 rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
1099                         who_am_i(), thisname, filter_level);
1100         }
1101
1102         if ((basename = strrchr(thisname, '/')) != NULL) {
1103                 int len = basename++ - thisname;
1104                 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
1105                         lastdir = new_array(char, len + 1);
1106                         memcpy(lastdir, thisname, len);
1107                         lastdir[len] = '\0';
1108                         lastdir_len = len;
1109                 }
1110         } else
1111                 basename = thisname;
1112         basename_len = strlen(basename) + 1; /* count the '\0' */
1113
1114 #ifdef SUPPORT_LINKS
1115         linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
1116 #else
1117         linkname_len = 0;
1118 #endif
1119
1120         if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
1121                 extra_len += EXTRA_LEN;
1122
1123 #if EXTRA_ROUNDING > 0
1124         if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
1125                 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
1126 #endif
1127
1128         alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
1129                   + linkname_len;
1130         if (flist)
1131                 bp = pool_alloc(flist->file_pool, alloc_len, "make_file");
1132         else {
1133                 if (!(bp = new_array(char, alloc_len)))
1134                         out_of_memory("make_file");
1135         }
1136
1137         memset(bp, 0, extra_len + FILE_STRUCT_LEN);
1138         bp += extra_len;
1139         file = (struct file_struct *)bp;
1140         bp += FILE_STRUCT_LEN;
1141
1142         memcpy(bp, basename, basename_len);
1143         bp += basename_len + linkname_len; /* skip space for symlink too */
1144
1145 #ifdef SUPPORT_HARD_LINKS
1146         if (preserve_hard_links && flist && flist->prev) {
1147                 if (protocol_version >= 28
1148                  ? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
1149                  : S_ISREG(st.st_mode)) {
1150                         tmp_dev = st.st_dev;
1151                         tmp_ino = st.st_ino;
1152                 } else
1153                         tmp_dev = 0;
1154         }
1155 #endif
1156
1157 #ifdef HAVE_STRUCT_STAT_ST_RDEV
1158         if (IS_DEVICE(st.st_mode) || IS_SPECIAL(st.st_mode)) {
1159                 tmp_rdev = st.st_rdev;
1160                 st.st_size = 0;
1161         }
1162 #endif
1163
1164         file->flags = flags;
1165         file->modtime = st.st_mtime;
1166         file->len32 = (uint32)st.st_size;
1167         if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
1168                 file->flags |= FLAG_LENGTH64;
1169                 OPT_EXTRA(file, 0)->unum = (uint32)(st.st_size >> 32);
1170         }
1171         file->mode = st.st_mode;
1172         if (preserve_uid)
1173                 F_OWNER(file) = st.st_uid;
1174         if (preserve_gid)
1175                 F_GROUP(file) = st.st_gid;
1176
1177         if (basename != thisname)
1178                 file->dirname = lastdir;
1179
1180 #ifdef SUPPORT_LINKS
1181         if (linkname_len) {
1182                 bp = (char*)file->basename + basename_len;
1183                 memcpy(bp, linkname, linkname_len);
1184         }
1185 #endif
1186
1187         if (always_checksum && am_sender && S_ISREG(st.st_mode))
1188                 file_checksum(thisname, tmp_sum, st.st_size);
1189
1190         F_PATHNAME(file) = pathname;
1191
1192         /* This code is only used by the receiver when it is building
1193          * a list of files for a delete pass. */
1194         if (keep_dirlinks && linkname_len && flist) {
1195                 STRUCT_STAT st2;
1196                 int save_mode = file->mode;
1197                 file->mode = S_IFDIR; /* Find a directory with our name. */
1198                 if (flist_find(dir_flist, file) >= 0
1199                     && x_stat(thisname, &st2, NULL) == 0 && S_ISDIR(st2.st_mode)) {
1200                         file->modtime = st2.st_mtime;
1201                         file->len32 = 0;
1202                         file->mode = st2.st_mode;
1203                         if (preserve_uid)
1204                                 F_OWNER(file) = st2.st_uid;
1205                         if (preserve_gid)
1206                                 F_GROUP(file) = st2.st_gid;
1207                 } else
1208                         file->mode = save_mode;
1209         }
1210
1211         if (basename_len == 0+1)
1212                 return NULL;
1213
1214         if (inc_recurse && flist == dir_flist) {
1215                 flist_expand(dir_flist);
1216 #ifdef ICONV_OPTION
1217                 if (ic_ndx)
1218                         F_NDX(file) = dir_flist->count;
1219                 if (need_unsorted_flist)
1220                         dir_flist->sorted[dir_flist->count] = file;
1221 #endif
1222                 dir_flist->files[dir_flist->count++] = file;
1223         }
1224
1225         return file;
1226 }
1227
1228 /* Only called for temporary file_struct entries created by make_file(). */
1229 void unmake_file(struct file_struct *file)
1230 {
1231         int extra_cnt = file_extra_cnt + LEN64_BUMP(file);
1232 #if EXTRA_ROUNDING > 0
1233         if (extra_cnt & EXTRA_ROUNDING)
1234                 extra_cnt = (extra_cnt | EXTRA_ROUNDING) + 1;
1235 #endif
1236         free(REQ_EXTRA(file, extra_cnt));
1237 }
1238
1239 static struct file_struct *send_file_name(int f, struct file_list *flist,
1240                                           char *fname, STRUCT_STAT *stp,
1241                                           int flags, int filter_flags)
1242 {
1243         struct file_struct *file;
1244 #if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
1245         statx sx;
1246 #endif
1247
1248         file = make_file(fname, flist, stp, flags, filter_flags);
1249         if (!file)
1250                 return NULL;
1251
1252         if (chmod_modes && !S_ISLNK(file->mode))
1253                 file->mode = tweak_mode(file->mode, chmod_modes);
1254
1255 #ifdef SUPPORT_ACLS
1256         if (preserve_acls && !S_ISLNK(file->mode) && f >= 0) {
1257                 sx.st.st_mode = file->mode;
1258                 sx.acc_acl = sx.def_acl = NULL;
1259                 if (get_acl(fname, &sx) < 0)
1260                         return NULL;
1261         }
1262 #endif
1263 #ifdef SUPPORT_XATTRS
1264         if (preserve_xattrs && f >= 0) {
1265                 sx.xattr = NULL;
1266                 if (get_xattr(fname, &sx) < 0)
1267                         return NULL;
1268         }
1269 #endif
1270
1271         maybe_emit_filelist_progress(flist->count + flist_count_offset);
1272
1273         flist_expand(flist);
1274         flist->files[flist->count++] = file;
1275         if (f >= 0) {
1276                 send_file_entry(f, file, flist->count - 1);
1277 #ifdef SUPPORT_ACLS
1278                 if (preserve_acls && !S_ISLNK(file->mode)) {
1279                         send_acl(&sx, f);
1280                         free_acl(&sx);
1281                 }
1282 #endif
1283 #ifdef SUPPORT_XATTRS
1284                 if (preserve_xattrs) {
1285                         F_XATTR(file) = send_xattr(&sx, f);
1286                         free_xattr(&sx);
1287                 }
1288 #endif
1289         }
1290         return file;
1291 }
1292
1293 static void send_if_directory(int f, struct file_list *flist,
1294                               struct file_struct *file,
1295                               char *fbuf, unsigned int ol,
1296                               int flags)
1297 {
1298         char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
1299
1300         if (S_ISDIR(file->mode)
1301             && !(file->flags & FLAG_MOUNT_DIR) && f_name(file, fbuf)) {
1302                 void *save_filters;
1303                 unsigned int len = strlen(fbuf);
1304                 if (len > 1 && fbuf[len-1] == '/')
1305                         fbuf[--len] = '\0';
1306                 if (len >= MAXPATHLEN - 1) {
1307                         io_error |= IOERR_GENERAL;
1308                         rprintf(FERROR, "skipping long-named directory: %s\n",
1309                                 full_fname(fbuf));
1310                         return;
1311                 }
1312                 save_filters = push_local_filters(fbuf, len);
1313                 send_directory(f, flist, fbuf, len, flags);
1314                 pop_local_filters(save_filters);
1315                 fbuf[ol] = '\0';
1316                 if (is_dot_dir)
1317                         fbuf[ol-1] = '.';
1318         }
1319 }
1320
1321 static int file_compare(struct file_struct **file1, struct file_struct **file2)
1322 {
1323         return f_name_cmp(*file1, *file2);
1324 }
1325
1326 /* We take an entire set of sibling dirs from dir_flist (start <= ndx <= end),
1327  * sort them by name, and link them into the tree, setting the appropriate
1328  * parent/child/sibling pointers. */
1329 static void add_dirs_to_tree(int parent_ndx, int start, int end)
1330 {
1331         int i;
1332         int32 *dp = NULL;
1333         int32 *parent_dp = parent_ndx < 0 ? NULL
1334                          : F_DIRNODE_P(dir_flist->sorted[parent_ndx]);
1335
1336         qsort(dir_flist->sorted + start, end - start + 1,
1337               sizeof dir_flist->sorted[0], (int (*)())file_compare);
1338
1339         if (verbose > 3)
1340                 output_flist(dir_flist);
1341
1342         for (i = start; i <= end; i++) {
1343                 struct file_struct *file = dir_flist->sorted[i];
1344                 if (!(file->flags & FLAG_XFER_DIR)
1345                  || file->flags & FLAG_MOUNT_DIR)
1346                         continue;
1347                 if (dp)
1348                         DIR_NEXT_SIBLING(dp) = i;
1349                 else if (parent_dp)
1350                         DIR_FIRST_CHILD(parent_dp) = i;
1351                 else
1352                         send_dir_ndx = i;
1353                 dp = F_DIRNODE_P(file);
1354                 DIR_PARENT(dp) = parent_ndx;
1355                 DIR_FIRST_CHILD(dp) = -1;
1356         }
1357         if (dp)
1358                 DIR_NEXT_SIBLING(dp) = -1;
1359 }
1360
1361 /* This function is normally called by the sender, but the receiving side also
1362  * calls it from get_dirlist() with f set to -1 so that we just construct the
1363  * file list in memory without sending it over the wire.  Also, get_dirlist()
1364  * might call this with f set to -2, which also indicates that local filter
1365  * rules should be ignored. */
1366 static void send_directory(int f, struct file_list *flist, char *fbuf, int len,
1367                            int flags)
1368 {
1369         struct dirent *di;
1370         unsigned remainder;
1371         char *p;
1372         DIR *d;
1373         int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
1374         int start = flist->count;
1375         int filter_flags = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
1376
1377         assert(flist != NULL);
1378
1379         if (!(d = opendir(fbuf))) {
1380                 io_error |= IOERR_GENERAL;
1381                 rsyserr(FERROR, errno, "opendir %s failed", full_fname(fbuf));
1382                 return;
1383         }
1384
1385         p = fbuf + len;
1386         if (len != 1 || *fbuf != '/')
1387                 *p++ = '/';
1388         *p = '\0';
1389         remainder = MAXPATHLEN - (p - fbuf);
1390
1391         for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1392                 char *dname = d_name(di);
1393                 if (dname[0] == '.' && (dname[1] == '\0'
1394                     || (dname[1] == '.' && dname[2] == '\0')))
1395                         continue;
1396                 if (strlcpy(p, dname, remainder) >= remainder) {
1397                         io_error |= IOERR_GENERAL;
1398                         rprintf(FINFO,
1399                                 "cannot send long-named file %s\n",
1400                                 full_fname(fbuf));
1401                         continue;
1402                 }
1403
1404                 send_file_name(f, flist, fbuf, NULL, flags, filter_flags);
1405         }
1406
1407         fbuf[len] = '\0';
1408
1409         if (errno) {
1410                 io_error |= IOERR_GENERAL;
1411                 rsyserr(FERROR, errno, "readdir(%s)", full_fname(fbuf));
1412         }
1413
1414         closedir(d);
1415
1416         if (f >= 0 && recurse && !divert_dirs) {
1417                 int i, end = flist->count - 1;
1418                 /* send_if_directory() bumps flist->count, so use "end". */
1419                 for (i = start; i <= end; i++)
1420                         send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
1421         }
1422 }
1423
1424 static void send1extra(int f, struct file_struct *file, struct file_list *flist)
1425 {
1426         char fbuf[MAXPATHLEN];
1427         int dlen;
1428
1429         f_name(file, fbuf);
1430         dlen = strlen(fbuf);
1431
1432         if (F_PATHNAME(file) != pathname) {
1433                 if (!push_pathname(F_PATHNAME(file), -1))
1434                         exit_cleanup(RERR_FILESELECT);
1435         }
1436
1437         change_local_filter_dir(fbuf, dlen, send_dir_depth);
1438
1439         send_directory(f, flist, fbuf, dlen, FLAG_DIVERT_DIRS | FLAG_XFER_DIR);
1440 }
1441
1442 void send_extra_file_list(int f, int at_least)
1443 {
1444         struct file_list *flist;
1445         int64 start_write;
1446         int future_cnt, save_io_error = io_error;
1447
1448         if (flist_eof)
1449                 return;
1450
1451         /* Keep sending data until we have the requested number of
1452          * files in the upcoming file-lists. */
1453         if (cur_flist->next) {
1454                 flist = first_flist->prev; /* the newest flist */
1455                 future_cnt = flist->count + flist->ndx_start
1456                            - cur_flist->next->ndx_start;
1457         } else
1458                 future_cnt = 0;
1459         while (future_cnt < at_least) {
1460                 struct file_struct *file = dir_flist->sorted[send_dir_ndx];
1461                 int start = dir_flist->count;
1462                 int32 *dp;
1463
1464                 flist = flist_new(0, "send_extra_file_list");
1465                 start_write = stats.total_written;
1466
1467                 /* If this is the first of a set of duplicate dirs, we must
1468                  * send all the dirs together in a single file-list.  We must
1469                  * also send the index of the last dir in the header. */
1470                 if (file->flags & FLAG_DUPLICATE) {
1471                         int dir_ndx, end_ndx = send_dir_ndx;
1472                         struct file_struct *fp = file;
1473
1474                         while (1) {
1475                                 dp = F_DIRNODE_P(fp);
1476                                 end_ndx = DIR_NEXT_SIBLING(dp);
1477                                 fp = dir_flist->sorted[end_ndx];
1478                                 if (!(fp->flags & FLAG_DUPLICATE))
1479                                         break;
1480                         }
1481
1482 #ifdef ICONV_OPTION
1483                         if (ic_ndx)
1484                                 dir_ndx = F_NDX(fp);
1485                         else
1486 #endif
1487                                 dir_ndx = end_ndx;
1488                         write_ndx(f, NDX_FLIST_OFFSET - dir_ndx);
1489
1490                         while (1) {
1491                                 send1extra(f, file, flist);
1492                                 if (send_dir_ndx == end_ndx)
1493                                         break;
1494                                 dp = F_DIRNODE_P(file);
1495                                 send_dir_ndx = DIR_NEXT_SIBLING(dp);
1496                                 file = dir_flist->sorted[send_dir_ndx];
1497                         }
1498                 } else {
1499                         int dir_ndx;
1500 #ifdef ICONV_OPTION
1501                         if (ic_ndx)
1502                                 dir_ndx = F_NDX(file);
1503                         else
1504 #endif
1505                                 dir_ndx = send_dir_ndx;
1506                         write_ndx(f, NDX_FLIST_OFFSET - dir_ndx);
1507
1508                         send1extra(f, file, flist);
1509                 }
1510                 write_byte(f, 0);
1511
1512 #ifdef ICONV_OPTION
1513                 if (!need_unsorted_flist)
1514 #endif
1515                         dir_flist->sorted = dir_flist->files;
1516                 add_dirs_to_tree(send_dir_ndx, start, dir_flist->count - 1);
1517
1518 #ifdef ICONV_OPTION
1519                 if (need_unsorted_flist) {
1520                         if (inc_recurse) {
1521                                 if (!(flist->sorted = new_array(struct file_struct *, flist->count)))
1522                                         out_of_memory("send_extra_file_list");
1523                                 memcpy(flist->sorted, flist->files,
1524                                        flist->count * sizeof (struct file_struct*));
1525                                 clean_flist(flist, 0);
1526                         } else
1527                                 flist->sorted = flist->files;
1528                 } else
1529 #endif
1530                 {
1531                         flist->sorted = flist->files;
1532                         clean_flist(flist, 0);
1533                 }
1534
1535                 file_total += flist->count;
1536                 future_cnt += flist->count;
1537                 stats.flist_size += stats.total_written - start_write;
1538                 stats.num_files += flist->count;
1539                 if (verbose > 3)
1540                         output_flist(flist);
1541
1542                 dp = F_DIRNODE_P(file);
1543                 if (DIR_FIRST_CHILD(dp) >= 0) {
1544                         send_dir_ndx = DIR_FIRST_CHILD(dp);
1545                         send_dir_depth++;
1546                 } else {
1547                         while (DIR_NEXT_SIBLING(dp) < 0) {
1548                                 if ((send_dir_ndx = DIR_PARENT(dp)) < 0) {
1549                                         write_ndx(f, NDX_FLIST_EOF);
1550                                         flist_eof = 1;
1551                                         change_local_filter_dir(NULL, 0, 0);
1552                                         goto finish;
1553                                 }
1554                                 send_dir_depth--;
1555                                 file = dir_flist->sorted[send_dir_ndx];
1556                                 dp = F_DIRNODE_P(file);
1557                         }
1558                         send_dir_ndx = DIR_NEXT_SIBLING(dp);
1559                 }
1560         }
1561
1562   finish:
1563         if (io_error != save_io_error && !ignore_errors)
1564                 send_msg_int(MSG_IO_ERROR, io_error);
1565 }
1566
1567 struct file_list *send_file_list(int f, int argc, char *argv[])
1568 {
1569         static const char *lastdir;
1570         static int lastdir_len = -1;
1571         int len, dirlen;
1572         STRUCT_STAT st;
1573         char *p, *dir;
1574         char lastpath[MAXPATHLEN] = "";
1575         struct file_list *flist;
1576         struct timeval start_tv, end_tv;
1577         int64 start_write;
1578         int use_ff_fd = 0;
1579         int flags, disable_buffering;
1580
1581         rprintf(FLOG, "building file list\n");
1582         if (show_filelist_p())
1583                 start_filelist_progress("building file list");
1584         else if (inc_recurse && verbose && !am_server)
1585                 rprintf(FCLIENT, "sending incremental file list\n");
1586
1587         start_write = stats.total_written;
1588         gettimeofday(&start_tv, NULL);
1589
1590 #ifdef SUPPORT_HARD_LINKS
1591         if (preserve_hard_links && protocol_version >= 30 && !cur_flist)
1592                 init_hard_links();
1593 #endif
1594
1595         flist = cur_flist = flist_new(0, "send_file_list");
1596         if (inc_recurse) {
1597                 dir_flist = flist_new(FLIST_TEMP, "send_file_list");
1598                 flags = FLAG_DIVERT_DIRS;
1599         } else {
1600                 dir_flist = cur_flist;
1601                 flags = 0;
1602         }
1603
1604         disable_buffering = io_start_buffering_out(f);
1605         if (filesfrom_fd >= 0) {
1606                 if (argv[0] && !push_dir(argv[0], 0)) {
1607                         rsyserr(FERROR, errno, "push_dir %s failed in %s",
1608                                 full_fname(argv[0]), curr_dir);
1609                         exit_cleanup(RERR_FILESELECT);
1610                 }
1611                 use_ff_fd = 1;
1612         }
1613
1614         while (1) {
1615                 char fbuf[MAXPATHLEN];
1616                 char *fn;
1617                 int is_dot_dir;
1618
1619                 if (use_ff_fd) {
1620                         if (read_filesfrom_line(filesfrom_fd, fbuf) == 0)
1621                                 break;
1622                         sanitize_path(fbuf, fbuf, "", 0, NULL);
1623                 } else {
1624                         if (argc-- == 0)
1625                                 break;
1626                         strlcpy(fbuf, *argv++, MAXPATHLEN);
1627                         if (sanitize_paths)
1628                                 sanitize_path(fbuf, fbuf, "", 0, NULL);
1629                 }
1630
1631                 len = strlen(fbuf);
1632                 if (relative_paths) {
1633                         /* We clean up fbuf below. */
1634                         is_dot_dir = 0;
1635                 } else if (!len || fbuf[len - 1] == '/') {
1636                         if (len == 2 && fbuf[0] == '.') {
1637                                 /* Turn "./" into just "." rather than "./." */
1638                                 fbuf[1] = '\0';
1639                         } else {
1640                                 if (len + 1 >= MAXPATHLEN)
1641                                         overflow_exit("send_file_list");
1642                                 fbuf[len++] = '.';
1643                                 fbuf[len] = '\0';
1644                         }
1645                         is_dot_dir = 1;
1646                 } else if (len > 1 && fbuf[len-1] == '.' && fbuf[len-2] == '.'
1647                     && (len == 2 || fbuf[len-3] == '/')) {
1648                         if (len + 2 >= MAXPATHLEN)
1649                                 overflow_exit("send_file_list");
1650                         fbuf[len++] = '/';
1651                         fbuf[len++] = '.';
1652                         fbuf[len] = '\0';
1653                         is_dot_dir = 1;
1654                 } else {
1655                         is_dot_dir = fbuf[len-1] == '.'
1656                                    && (len == 1 || fbuf[len-2] == '/');
1657                 }
1658
1659                 dir = NULL;
1660
1661                 if (!relative_paths) {
1662                         p = strrchr(fbuf, '/');
1663                         if (p) {
1664                                 *p = '\0';
1665                                 if (p == fbuf)
1666                                         dir = "/";
1667                                 else
1668                                         dir = fbuf;
1669                                 len -= p - fbuf + 1;
1670                                 fn = p + 1;
1671                         } else
1672                                 fn = fbuf;
1673                 } else {
1674                         if ((p = strstr(fbuf, "/./")) != NULL) {
1675                                 *p = '\0';
1676                                 if (p == fbuf)
1677                                         dir = "/";
1678                                 else
1679                                         dir = fbuf;
1680                                 len -= p - fbuf + 3;
1681                                 fn = p + 3;
1682                         } else
1683                                 fn = fbuf;
1684                         /* Get rid of trailing "/" and "/.". */
1685                         while (len) {
1686                                 if (fn[len - 1] == '/') {
1687                                         is_dot_dir = 1;
1688                                         if (!--len && !dir) {
1689                                                 len++;
1690                                                 break;
1691                                         }
1692                                 }
1693                                 else if (len >= 2 && fn[len - 1] == '.'
1694                                                   && fn[len - 2] == '/') {
1695                                         is_dot_dir = 1;
1696                                         if (!(len -= 2) && !dir) {
1697                                                 len++;
1698                                                 break;
1699                                         }
1700                                 } else
1701                                         break;
1702                         }
1703                         if (len == 1 && fn[0] == '/')
1704                                 fn[len++] = '.';
1705                         fn[len] = '\0';
1706                         /* Reject a ".." dir in the active part of the path. */
1707                         for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
1708                                 if ((p[2] == '/' || p[2] == '\0')
1709                                  && (p == fn || p[-1] == '/')) {
1710                                         rprintf(FERROR,
1711                                             "found \"..\" dir in relative path: %s\n",
1712                                             fbuf);
1713                                         exit_cleanup(RERR_SYNTAX);
1714                                 }
1715                         }
1716                 }
1717
1718                 if (!*fn) {
1719                         len = 1;
1720                         fn = ".";
1721                 }
1722
1723                 dirlen = dir ? strlen(dir) : 0;
1724                 if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
1725                         if (!push_pathname(dir ? strdup(dir) : NULL, dirlen))
1726                                 goto push_error;
1727                         lastdir = pathname;
1728                         lastdir_len = pathname_len;
1729                 } else if (!push_pathname(lastdir, lastdir_len)) {
1730                   push_error:
1731                         io_error |= IOERR_GENERAL;
1732                         rsyserr(FERROR, errno, "push_dir %s failed in %s",
1733                                 full_fname(dir), curr_dir);
1734                         continue;
1735                 }
1736
1737                 if (fn != fbuf)
1738                         memmove(fbuf, fn, len + 1);
1739
1740                 if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
1741                         io_error |= IOERR_GENERAL;
1742                         rsyserr(FERROR, errno, "link_stat %s failed",
1743                                 full_fname(fbuf));
1744                         continue;
1745                 }
1746
1747                 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
1748                         rprintf(FINFO, "skipping directory %s\n", fbuf);
1749                         continue;
1750                 }
1751
1752                 if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
1753                         /* Send the implied directories at the start of the
1754                          * source spec, so we get their permissions right. */
1755                         char *lp = lastpath, *slash = fbuf;
1756                         *p = '\0';
1757                         /* Skip any initial directories in our path that we
1758                          * have in common with lastpath. */
1759                         for (fn = fbuf; *fn && *lp == *fn; lp++, fn++) {
1760                                 if (*fn == '/')
1761                                         slash = fn;
1762                         }
1763                         *p = '/';
1764                         if (fn != p || (*lp && *lp != '/')) {
1765                                 int save_copy_links = copy_links;
1766                                 int save_xfer_dirs = xfer_dirs;
1767                                 int dir_flags = inc_recurse ? FLAG_DIVERT_DIRS : 0;
1768                                 copy_links |= copy_unsafe_links;
1769                                 xfer_dirs = 1;
1770                                 while ((slash = strchr(slash+1, '/')) != 0) {
1771                                         *slash = '\0';
1772                                         send_file_name(f, flist, fbuf, NULL,
1773                                                        dir_flags, ALL_FILTERS);
1774                                         *slash = '/';
1775                                 }
1776                                 copy_links = save_copy_links;
1777                                 xfer_dirs = save_xfer_dirs;
1778                                 *p = '\0';
1779                                 strlcpy(lastpath, fbuf, sizeof lastpath);
1780                                 *p = '/';
1781                         }
1782                 }
1783
1784                 if (one_file_system)
1785                         filesystem_dev = st.st_dev;
1786
1787                 if (recurse || (xfer_dirs && is_dot_dir)) {
1788                         struct file_struct *file;
1789                         int top_flags = FLAG_TOP_DIR | FLAG_XFER_DIR | flags;
1790                         file = send_file_name(f, flist, fbuf, &st,
1791                                               top_flags, ALL_FILTERS);
1792                         if (file && !inc_recurse)
1793                                 send_if_directory(f, flist, file, fbuf, len, flags);
1794                 } else
1795                         send_file_name(f, flist, fbuf, &st, flags, ALL_FILTERS);
1796         }
1797
1798         gettimeofday(&end_tv, NULL);
1799         stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
1800                               + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
1801         if (stats.flist_buildtime == 0)
1802                 stats.flist_buildtime = 1;
1803         start_tv = end_tv;
1804
1805         write_byte(f, 0); /* Indicate end of file list */
1806
1807 #ifdef SUPPORT_HARD_LINKS
1808         if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
1809                 idev_destroy();
1810 #endif
1811
1812         if (show_filelist_p())
1813                 finish_filelist_progress(flist);
1814
1815         gettimeofday(&end_tv, NULL);
1816         stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
1817                              + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
1818
1819         /* When converting names, both sides keep an unsorted file-list array
1820          * because the names will differ on the sending and receiving sides
1821          * (both sides will use the unsorted index number for each item). */
1822
1823         /* Sort the list without removing any duplicates.  This allows the
1824          * receiving side to ask for whatever name it kept.  For incremental
1825          * recursion mode, the sender marks duplicate dirs so that it can
1826          * send them together in a single file-list. */
1827 #ifdef ICONV_OPTION
1828         if (need_unsorted_flist) {
1829                 if (inc_recurse) {
1830                         if (!(flist->sorted = new_array(struct file_struct *, flist->count)))
1831                                 out_of_memory("send_file_list");
1832                         memcpy(flist->sorted, flist->files,
1833                                flist->count * sizeof (struct file_struct*));
1834                         clean_flist(flist, 0);
1835                 } else
1836                         flist->sorted = flist->files;
1837         } else
1838 #endif
1839         {
1840                 flist->sorted = flist->files;
1841                 clean_flist(flist, 0);
1842         }
1843         file_total += flist->count;
1844
1845         if (!numeric_ids && !inc_recurse)
1846                 send_id_list(f);
1847
1848         /* send the io_error flag */
1849         if (protocol_version < 30)
1850                 write_int(f, ignore_errors ? 0 : io_error);
1851         else if (io_error && !ignore_errors)
1852                 send_msg_int(MSG_IO_ERROR, io_error);
1853
1854         if (disable_buffering)
1855                 io_end_buffering_out();
1856
1857         stats.flist_size = stats.total_written - start_write;
1858         stats.num_files = flist->count;
1859
1860         if (verbose > 3)
1861                 output_flist(flist);
1862
1863         if (verbose > 2)
1864                 rprintf(FINFO, "send_file_list done\n");
1865
1866         if (inc_recurse) {
1867 #ifdef ICONV_OPTION
1868                 if (!need_unsorted_flist)
1869 #endif
1870                         dir_flist->sorted = dir_flist->files;
1871                 add_dirs_to_tree(-1, 0, dir_flist->count - 1);
1872                 if (send_dir_ndx < 0) {
1873                         write_ndx(f, NDX_FLIST_EOF);
1874                         flist_eof = 1;
1875                 }
1876                 else if (file_total == 1) {
1877                         /* If we're creating incremental file-lists and there
1878                          * was just 1 item in the first file-list, send 1 more
1879                          * file-list to check if this is a 1-file xfer. */
1880                         send_extra_file_list(f, 1);
1881                 }
1882         }
1883
1884         return flist;
1885 }
1886
1887 struct file_list *recv_file_list(int f)
1888 {
1889         struct file_list *flist;
1890         int dstart, flags;
1891         int64 start_read;
1892
1893         if (!first_flist)
1894                 rprintf(FLOG, "receiving file list\n");
1895         if (show_filelist_p())
1896                 start_filelist_progress("receiving file list");
1897         else if (inc_recurse && verbose && !am_server && !first_flist)
1898                 rprintf(FCLIENT, "receiving incremental file list\n");
1899
1900         start_read = stats.total_read;
1901
1902         flist = flist_new(0, "recv_file_list");
1903
1904 #ifdef SUPPORT_HARD_LINKS
1905         if (preserve_hard_links && protocol_version < 30)
1906                 init_hard_links();
1907 #endif
1908
1909         if (inc_recurse) {
1910                 if (flist->ndx_start == 0)
1911                         dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
1912                 dstart = dir_flist->count;
1913         } else {
1914                 dir_flist = flist;
1915                 dstart = 0;
1916         }
1917
1918         while ((flags = read_byte(f)) != 0) {
1919                 struct file_struct *file;
1920
1921                 flist_expand(flist);
1922
1923                 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
1924                         flags |= read_byte(f) << 8;
1925                 file = recv_file_entry(flist, flags, f);
1926
1927                 if (inc_recurse && S_ISDIR(file->mode)) {
1928                         flist_expand(dir_flist);
1929 #ifdef ICONV_OPTION
1930                         if (need_unsorted_flist)
1931                                 dir_flist->sorted[dir_flist->count] = file;
1932 #endif
1933                         dir_flist->files[dir_flist->count++] = file;
1934                 }
1935
1936                 flist->files[flist->count++] = file;
1937
1938                 maybe_emit_filelist_progress(flist->count);
1939
1940                 if (verbose > 2) {
1941                         rprintf(FINFO, "recv_file_name(%s)\n",
1942                                 f_name(file, NULL));
1943                 }
1944         }
1945         file_total += flist->count;
1946
1947         if (verbose > 2)
1948                 rprintf(FINFO, "received %d names\n", flist->count);
1949
1950         if (show_filelist_p())
1951                 finish_filelist_progress(flist);
1952
1953 #ifdef ICONV_OPTION
1954         if (need_unsorted_flist) {
1955                 /* Create an extra array of index pointers that we can sort for
1956                  * the generator's use (for wading through the files in sorted
1957                  * order and for calling flist_find()).  We keep the "files"
1958                  * list unsorted for our exchange of index numbers with the
1959                  * other side (since their names may not sort the same). */
1960                 if (!(flist->sorted = new_array(struct file_struct *, flist->count)))
1961                         out_of_memory("recv_file_list");
1962                 memcpy(flist->sorted, flist->files,
1963                        flist->count * sizeof (struct file_struct*));
1964                 if (inc_recurse) {
1965                         qsort(dir_flist->sorted + dstart, dir_flist->count - dstart,
1966                               sizeof (struct file_struct*), (int (*)())file_compare);
1967                 }
1968         } else
1969 #endif
1970         {
1971                 flist->sorted = flist->files;
1972                 if (inc_recurse) {
1973                         dir_flist->sorted = dir_flist->files;
1974                         qsort(dir_flist->sorted + dstart, dir_flist->count - dstart,
1975                               sizeof (struct file_struct*), (int (*)())file_compare);
1976                 }
1977         }
1978
1979         if (!inc_recurse && f >= 0)
1980                 recv_id_list(f, flist);
1981
1982         clean_flist(flist, relative_paths);
1983
1984         if (protocol_version < 30) {
1985                 /* Recv the io_error flag */
1986                 if (ignore_errors)
1987                         read_int(f);
1988                 else
1989                         io_error |= read_int(f);
1990         }
1991
1992         if (verbose > 3)
1993                 output_flist(flist);
1994
1995         if (list_only) {
1996                 int i;
1997                 for (i = 0; i < flist->count; i++)
1998                         list_file_entry(flist->files[i]);
1999         }
2000
2001         if (verbose > 2)
2002                 rprintf(FINFO, "recv_file_list done\n");
2003
2004         stats.flist_size += stats.total_read - start_read;
2005         stats.num_files += flist->count;
2006
2007         return flist;
2008 }
2009
2010 /* This is only used once by the receiver if the very first file-list
2011  * has exactly one item in it. */
2012 void recv_additional_file_list(int f)
2013 {
2014         struct file_list *flist;
2015         int ndx = read_ndx(f);
2016         if (ndx == NDX_FLIST_EOF) {
2017                 flist_eof = 1;
2018                 change_local_filter_dir(NULL, 0, 0);
2019         } else {
2020                 ndx = NDX_FLIST_OFFSET - ndx;
2021                 if (ndx < 0 || ndx >= dir_flist->count) {
2022                         ndx = NDX_FLIST_OFFSET - ndx;
2023                         rprintf(FERROR,
2024                                 "Invalid dir index: %d (%d - %d)\n",
2025                                 ndx, NDX_FLIST_OFFSET,
2026                                 NDX_FLIST_OFFSET - dir_flist->count);
2027                         exit_cleanup(RERR_PROTOCOL);
2028                 }
2029                 flist = recv_file_list(f);
2030                 flist->parent_ndx = ndx;
2031         }
2032 }
2033
2034 /* Search for an identically-named item in the file list.  Note that the
2035  * items must agree in their directory-ness, or no match is returned. */
2036 int flist_find(struct file_list *flist, struct file_struct *f)
2037 {
2038         int low = flist->low, high = flist->high;
2039         int diff, mid, mid_up;
2040
2041         while (low <= high) {
2042                 mid = (low + high) / 2;
2043                 if (F_IS_ACTIVE(flist->sorted[mid]))
2044                         mid_up = mid;
2045                 else {
2046                         /* Scan for the next non-empty entry using the cached
2047                          * distance values.  If the value isn't fully up-to-
2048                          * date, update it. */
2049                         mid_up = mid + F_DEPTH(flist->sorted[mid]);
2050                         if (!F_IS_ACTIVE(flist->sorted[mid_up])) {
2051                                 do {
2052                                     mid_up += F_DEPTH(flist->sorted[mid_up]);
2053                                 } while (!F_IS_ACTIVE(flist->sorted[mid_up]));
2054                                 F_DEPTH(flist->sorted[mid]) = mid_up - mid;
2055                         }
2056                         if (mid_up > high) {
2057                                 /* If there's nothing left above us, set high to
2058                                  * a non-empty entry below us and continue. */
2059                                 high = mid - (int)flist->sorted[mid]->len32;
2060                                 if (!F_IS_ACTIVE(flist->sorted[high])) {
2061                                         do {
2062                                             high -= (int)flist->sorted[high]->len32;
2063                                         } while (!F_IS_ACTIVE(flist->sorted[high]));
2064                                         flist->sorted[mid]->len32 = mid - high;
2065                                 }
2066                                 continue;
2067                         }
2068                 }
2069                 diff = f_name_cmp(flist->sorted[mid_up], f);
2070                 if (diff == 0) {
2071                         if (protocol_version < 29
2072                             && S_ISDIR(flist->sorted[mid_up]->mode)
2073                             != S_ISDIR(f->mode))
2074                                 return -1;
2075                         return mid_up;
2076                 }
2077                 if (diff < 0)
2078                         low = mid_up + 1;
2079                 else
2080                         high = mid - 1;
2081         }
2082         return -1;
2083 }
2084
2085 /*
2086  * Free up any resources a file_struct has allocated
2087  * and clear the file.
2088  */
2089 void clear_file(struct file_struct *file)
2090 {
2091         /* The +1 zeros out the first char of the basename. */
2092         memset(file, 0, FILE_STRUCT_LEN + 1);
2093         /* In an empty entry, F_DEPTH() is an offset to the next non-empty
2094          * entry.  Likewise for len32 in the opposite direction.  We assume
2095          * that we're alone for now since flist_find() will adjust the counts
2096          * it runs into that aren't up-to-date. */
2097         file->len32 = F_DEPTH(file) = 1;
2098 }
2099
2100 /* Allocate a new file list. */
2101 struct file_list *flist_new(int flags, char *msg)
2102 {
2103         struct file_list *flist;
2104
2105         flist = new(struct file_list);
2106         if (!flist)
2107                 out_of_memory(msg);
2108
2109         memset(flist, 0, sizeof flist[0]);
2110
2111         if (!(flags & FLIST_TEMP)) {
2112                 if (first_flist) {
2113                         flist->ndx_start = first_flist->prev->ndx_start
2114                                          + first_flist->prev->count;
2115                 }
2116                 /* This is a doubly linked list with prev looping back to
2117                  * the end of the list, but the last next pointer is NULL. */
2118                 if (!first_flist)
2119                         first_flist = cur_flist = flist->prev = flist;
2120                 else {
2121                         flist->prev = first_flist->prev;
2122                         flist->prev->next = first_flist->prev = flist;
2123                 }
2124                 flist_cnt++;
2125         }
2126
2127         if (!(flist->file_pool = pool_create(FILE_EXTENT, 0, out_of_memory, POOL_INTERN)))
2128                 out_of_memory(msg);
2129
2130         return flist;
2131 }
2132
2133 /* Free up all elements in a flist. */
2134 void flist_free(struct file_list *flist)
2135 {
2136         if (!flist->prev)
2137                 ; /* Was FLIST_TEMP dir-list. */
2138         else if (flist == flist->prev) {
2139                 first_flist = cur_flist = NULL;
2140                 file_total = 0;
2141                 flist_cnt = 0;
2142         } else {
2143                 if (flist == cur_flist)
2144                         cur_flist = flist->next;
2145                 if (flist == first_flist)
2146                         first_flist = first_flist->next;
2147                 else {
2148                         flist->prev->next = flist->next;
2149                         if (!flist->next)
2150                                 flist->next = first_flist;
2151                 }
2152                 flist->next->prev = flist->prev;
2153                 file_total -= flist->count;
2154                 flist_cnt--;
2155         }
2156
2157         pool_destroy(flist->file_pool);
2158         if (flist->sorted && flist->sorted != flist->files)
2159                 free(flist->sorted);
2160         free(flist->files);
2161         free(flist);
2162 }
2163
2164 /* This routine ensures we don't have any duplicate names in our file list.
2165  * duplicate names can cause corruption because of the pipelining. */
2166 static void clean_flist(struct file_list *flist, int strip_root)
2167 {
2168         char fbuf[MAXPATHLEN];
2169         int i, prev_i;
2170
2171         if (!flist)
2172                 return;
2173         if (flist->count == 0) {
2174                 flist->high = -1;
2175                 return;
2176         }
2177
2178         qsort(flist->sorted, flist->count,
2179             sizeof flist->sorted[0], (int (*)())file_compare);
2180
2181         if (!am_sender || inc_recurse) {
2182                 for (i = prev_i = 0; i < flist->count; i++) {
2183                         if (F_IS_ACTIVE(flist->sorted[i])) {
2184                                 prev_i = i;
2185                                 break;
2186                         }
2187                 }
2188                 flist->low = prev_i;
2189         } else {
2190                 i = prev_i = flist->count - 1;
2191                 flist->low = 0;
2192         }
2193
2194         while (++i < flist->count) {
2195                 int j;
2196                 struct file_struct *file = flist->sorted[i];
2197
2198                 if (!F_IS_ACTIVE(file))
2199                         continue;
2200                 if (f_name_cmp(file, flist->sorted[prev_i]) == 0)
2201                         j = prev_i;
2202                 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
2203                         int save_mode = file->mode;
2204                         /* Make sure that this directory doesn't duplicate a
2205                          * non-directory earlier in the list. */
2206                         flist->high = prev_i;
2207                         file->mode = S_IFREG;
2208                         j = flist_find(flist, file);
2209                         file->mode = save_mode;
2210                 } else
2211                         j = -1;
2212                 if (j >= 0) {
2213                         struct file_struct *fp = flist->sorted[j];
2214                         int keep, drop;
2215                         /* If one is a dir and the other is not, we want to
2216                          * keep the dir because it might have contents in the
2217                          * list. */
2218                         if (S_ISDIR(file->mode) != S_ISDIR(fp->mode)) {
2219                                 if (S_ISDIR(file->mode))
2220                                         keep = i, drop = j;
2221                                 else
2222                                         keep = j, drop = i;
2223                         } else if (protocol_version < 27)
2224                                 keep = j, drop = i;
2225                         else
2226                                 keep = i, drop = j;
2227
2228                         if (am_sender)
2229                                 flist->sorted[drop]->flags |= FLAG_DUPLICATE;
2230                         else {
2231                                 if (verbose > 1) {
2232                                         rprintf(FINFO,
2233                                             "removing duplicate name %s from file list (%d)\n",
2234                                             f_name(file, fbuf), drop + flist->ndx_start);
2235                                 }
2236                                 /* Make sure we don't lose track of a user-specified
2237                                  * top directory. */
2238                                 flist->sorted[keep]->flags |= flist->sorted[drop]->flags
2239                                                            & (FLAG_TOP_DIR|FLAG_XFER_DIR);
2240
2241                                 clear_file(flist->sorted[drop]);
2242                         }
2243
2244                         if (keep == i) {
2245                                 if (flist->low == drop) {
2246                                         for (j = drop + 1;
2247                                              j < i && !F_IS_ACTIVE(flist->sorted[j]);
2248                                              j++) {}
2249                                         flist->low = j;
2250                                 }
2251                                 prev_i = i;
2252                         }
2253                 } else
2254                         prev_i = i;
2255         }
2256         flist->high = prev_i;
2257
2258         if (strip_root) {
2259                 /* We need to strip off the leading slashes for relative
2260                  * paths, but this must be done _after_ the sorting phase. */
2261                 for (i = flist->low; i <= flist->high; i++) {
2262                         struct file_struct *file = flist->sorted[i];
2263
2264                         if (!file->dirname)
2265                                 continue;
2266                         while (*file->dirname == '/')
2267                                 file->dirname++;
2268                         if (!*file->dirname)
2269                                 file->dirname = NULL;
2270                 }
2271         }
2272
2273         if (prune_empty_dirs && !am_sender) {
2274                 int j, prev_depth = 0;
2275
2276                 prev_i = 0; /* It's OK that this isn't really true. */
2277
2278                 for (i = flist->low; i <= flist->high; i++) {
2279                         struct file_struct *fp, *file = flist->sorted[i];
2280
2281                         /* This temporarily abuses the F_DEPTH() value for a
2282                          * directory that is in a chain that might get pruned.
2283                          * We restore the old value if it gets a reprieve. */
2284                         if (S_ISDIR(file->mode) && F_DEPTH(file)) {
2285                                 /* Dump empty dirs when coming back down. */
2286                                 for (j = prev_depth; j >= F_DEPTH(file); j--) {
2287                                         fp = flist->sorted[prev_i];
2288                                         if (F_DEPTH(fp) >= 0)
2289                                                 break;
2290                                         prev_i = -F_DEPTH(fp)-1;
2291                                         clear_file(fp);
2292                                 }
2293                                 prev_depth = F_DEPTH(file);
2294                                 if (is_excluded(f_name(file, fbuf), 1,
2295                                                        ALL_FILTERS)) {
2296                                         /* Keep dirs through this dir. */
2297                                         for (j = prev_depth-1; ; j--) {
2298                                                 fp = flist->sorted[prev_i];
2299                                                 if (F_DEPTH(fp) >= 0)
2300                                                         break;
2301                                                 prev_i = -F_DEPTH(fp)-1;
2302                                                 F_DEPTH(fp) = j;
2303                                         }
2304                                 } else
2305                                         F_DEPTH(file) = -prev_i-1;
2306                                 prev_i = i;
2307                         } else {
2308                                 /* Keep dirs through this non-dir. */
2309                                 for (j = prev_depth; ; j--) {
2310                                         fp = flist->sorted[prev_i];
2311                                         if (F_DEPTH(fp) >= 0)
2312                                                 break;
2313                                         prev_i = -F_DEPTH(fp)-1;
2314                                         F_DEPTH(fp) = j;
2315                                 }
2316                         }
2317                 }
2318                 /* Dump all remaining empty dirs. */
2319                 while (1) {
2320                         struct file_struct *fp = flist->sorted[prev_i];
2321                         if (F_DEPTH(fp) >= 0)
2322                                 break;
2323                         prev_i = -F_DEPTH(fp)-1;
2324                         clear_file(fp);
2325                 }
2326
2327                 for (i = flist->low; i <= flist->high; i++) {
2328                         if (F_IS_ACTIVE(flist->sorted[i]))
2329                                 break;
2330                 }
2331                 flist->low = i;
2332                 for (i = flist->high; i >= flist->low; i--) {
2333                         if (F_IS_ACTIVE(flist->sorted[i]))
2334                                 break;
2335                 }
2336                 flist->high = i;
2337         }
2338 }
2339
2340 static void output_flist(struct file_list *flist)
2341 {
2342         char uidbuf[16], gidbuf[16], depthbuf[16];
2343         struct file_struct *file;
2344         const char *root, *dir, *slash, *name, *trail;
2345         const char *who = who_am_i();
2346         int i;
2347
2348         rprintf(FINFO, "[%s] flist start=%d, count=%d, low=%d, high=%d\n",
2349                 who, flist->ndx_start, flist->count, flist->low, flist->high);
2350         for (i = 0; i < flist->count; i++) {
2351                 file = flist->sorted[i];
2352                 if ((am_root || am_sender) && preserve_uid) {
2353                         snprintf(uidbuf, sizeof uidbuf, " uid=%u",
2354                                  F_OWNER(file));
2355                 } else
2356                         *uidbuf = '\0';
2357                 if (preserve_gid) {
2358                         static char parens[] = "(\0)\0\0\0";
2359                         char *pp = parens + (file->flags & FLAG_SKIP_GROUP ? 0 : 3);
2360                         snprintf(gidbuf, sizeof gidbuf, " gid=%s%u%s",
2361                                  pp, F_GROUP(file), pp + 2);
2362                 } else
2363                         *gidbuf = '\0';
2364                 if (!am_sender)
2365                         snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
2366                 if (F_IS_ACTIVE(file)) {
2367                         root = am_sender ? NS(F_PATHNAME(file)) : depthbuf;
2368                         if ((dir = file->dirname) == NULL)
2369                                 dir = slash = "";
2370                         else
2371                                 slash = "/";
2372                         name = file->basename;
2373                         trail = S_ISDIR(file->mode) ? "/" : "";
2374                 } else
2375                         root = dir = slash = name = trail = "";
2376                 rprintf(FINFO,
2377                         "[%s] i=%d %s %s%s%s%s mode=0%o len=%.0f%s%s flags=%x\n",
2378                         who, i + flist->ndx_start,
2379                         root, dir, slash, name, trail,
2380                         (int)file->mode, (double)F_LENGTH(file),
2381                         uidbuf, gidbuf, file->flags);
2382         }
2383 }
2384
2385 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
2386 enum fnc_type { t_PATH, t_ITEM };
2387
2388 /* Compare the names of two file_struct entities, similar to how strcmp()
2389  * would do if it were operating on the joined strings.
2390  *
2391  * Some differences beginning with protocol_version 29: (1) directory names
2392  * are compared with an assumed trailing slash so that they compare in a
2393  * way that would cause them to sort immediately prior to any content they
2394  * may have; (2) a directory of any name compares after a non-directory of
2395  * any name at the same depth; (3) a directory with name "." compares prior
2396  * to anything else.  These changes mean that a directory and a non-dir
2397  * with the same name will not compare as equal (protocol_version >= 29).
2398  *
2399  * The dirname component can be an empty string, but the basename component
2400  * cannot (and never is in the current codebase).  The basename component
2401  * may be NULL (for a removed item), in which case it is considered to be
2402  * after any existing item. */
2403 int f_name_cmp(struct file_struct *f1, struct file_struct *f2)
2404 {
2405         int dif;
2406         const uchar *c1, *c2;
2407         enum fnc_state state1, state2;
2408         enum fnc_type type1, type2;
2409         enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
2410
2411         if (!f1 || !F_IS_ACTIVE(f1)) {
2412                 if (!f2 || !F_IS_ACTIVE(f2))
2413                         return 0;
2414                 return -1;
2415         }
2416         if (!f2 || !F_IS_ACTIVE(f2))
2417                 return 1;
2418
2419         c1 = (uchar*)f1->dirname;
2420         c2 = (uchar*)f2->dirname;
2421         if (c1 == c2)
2422                 c1 = c2 = NULL;
2423         if (!c1) {
2424                 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2425                 c1 = (const uchar*)f1->basename;
2426                 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2427                         type1 = t_ITEM;
2428                         state1 = s_TRAILING;
2429                         c1 = (uchar*)"";
2430                 } else
2431                         state1 = s_BASE;
2432         } else {
2433                 type1 = t_path;
2434                 state1 = s_DIR;
2435         }
2436         if (!c2) {
2437                 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2438                 c2 = (const uchar*)f2->basename;
2439                 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2440                         type2 = t_ITEM;
2441                         state2 = s_TRAILING;
2442                         c2 = (uchar*)"";
2443                 } else
2444                         state2 = s_BASE;
2445         } else {
2446                 type2 = t_path;
2447                 state2 = s_DIR;
2448         }
2449
2450         if (type1 != type2)
2451                 return type1 == t_PATH ? 1 : -1;
2452
2453         do {
2454                 if (!*c1) {
2455                         switch (state1) {
2456                         case s_DIR:
2457                                 state1 = s_SLASH;
2458                                 c1 = (uchar*)"/";
2459                                 break;
2460                         case s_SLASH:
2461                                 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2462                                 c1 = (const uchar*)f1->basename;
2463                                 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2464                                         type1 = t_ITEM;
2465                                         state1 = s_TRAILING;
2466                                         c1 = (uchar*)"";
2467                                 } else
2468                                         state1 = s_BASE;
2469                                 break;
2470                         case s_BASE:
2471                                 state1 = s_TRAILING;
2472                                 if (type1 == t_PATH) {
2473                                         c1 = (uchar*)"/";
2474                                         break;
2475                                 }
2476                                 /* FALL THROUGH */
2477                         case s_TRAILING:
2478                                 type1 = t_ITEM;
2479                                 break;
2480                         }
2481                         if (*c2 && type1 != type2)
2482                                 return type1 == t_PATH ? 1 : -1;
2483                 }
2484                 if (!*c2) {
2485                         switch (state2) {
2486                         case s_DIR:
2487                                 state2 = s_SLASH;
2488                                 c2 = (uchar*)"/";
2489                                 break;
2490                         case s_SLASH:
2491                                 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2492                                 c2 = (const uchar*)f2->basename;
2493                                 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2494                                         type2 = t_ITEM;
2495                                         state2 = s_TRAILING;
2496                                         c2 = (uchar*)"";
2497                                 } else
2498                                         state2 = s_BASE;
2499                                 break;
2500                         case s_BASE:
2501                                 state2 = s_TRAILING;
2502                                 if (type2 == t_PATH) {
2503                                         c2 = (uchar*)"/";
2504                                         break;
2505                                 }
2506                                 /* FALL THROUGH */
2507                         case s_TRAILING:
2508                                 if (!*c1)
2509                                         return 0;
2510                                 type2 = t_ITEM;
2511                                 break;
2512                         }
2513                         if (type1 != type2)
2514                                 return type1 == t_PATH ? 1 : -1;
2515                 }
2516         } while ((dif = (int)*c1++ - (int)*c2++) == 0);
2517
2518         return dif;
2519 }
2520
2521 char *f_name_buf(void)
2522 {
2523         static char names[5][MAXPATHLEN];
2524         static unsigned int n;
2525
2526         n = (n + 1) % (sizeof names / sizeof names[0]);
2527
2528         return names[n];
2529 }
2530
2531 /* Return a copy of the full filename of a flist entry, using the indicated
2532  * buffer or one of 5 static buffers if fbuf is NULL.  No size-checking is
2533  * done because we checked the size when creating the file_struct entry.
2534  */
2535 char *f_name(struct file_struct *f, char *fbuf)
2536 {
2537         if (!f || !F_IS_ACTIVE(f))
2538                 return NULL;
2539
2540         if (!fbuf)
2541                 fbuf = f_name_buf();
2542
2543         if (f->dirname) {
2544                 int len = strlen(f->dirname);
2545                 memcpy(fbuf, f->dirname, len);
2546                 fbuf[len] = '/';
2547                 strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
2548         } else
2549                 strlcpy(fbuf, f->basename, MAXPATHLEN);
2550
2551         return fbuf;
2552 }
2553
2554 /* Do a non-recursive scan of the named directory, possibly ignoring all
2555  * exclude rules except for the daemon's.  If "dlen" is >=0, it is the length
2556  * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
2557  * buffer (the functions we call will append names onto the end, but the old
2558  * dir value will be restored on exit). */
2559 struct file_list *get_dirlist(char *dirname, int dlen, int ignore_filter_rules)
2560 {
2561         struct file_list *dirlist;
2562         char dirbuf[MAXPATHLEN];
2563         int save_recurse = recurse;
2564         int save_xfer_dirs = xfer_dirs;
2565
2566         if (dlen < 0) {
2567                 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
2568                 if (dlen >= MAXPATHLEN)
2569                         return NULL;
2570                 dirname = dirbuf;
2571         }
2572
2573         dirlist = flist_new(FLIST_TEMP, "get_dirlist");
2574
2575         recurse = 0;
2576         xfer_dirs = 1;
2577         send_directory(ignore_filter_rules ? -2 : -1, dirlist, dirname, dlen, 0);
2578         xfer_dirs = save_xfer_dirs;
2579         recurse = save_recurse;
2580         if (do_progress)
2581                 flist_count_offset += dirlist->count;
2582
2583         dirlist->sorted = dirlist->files;
2584         clean_flist(dirlist, 0);
2585
2586         if (verbose > 3)
2587                 output_flist(dirlist);
2588
2589         return dirlist;
2590 }