generator.c

   1 /*
   2  * Routines that are exclusive to the generator process.
   3  *
   4  * Copyright (C) 1996-2000 Andrew Tridgell
   5  * Copyright (C) 1996 Paul Mackerras
   6  * Copyright (C) 2002 Martin Pool <mbp@samba.org>
   7  * Copyright (C) 2003-2020 Wayne Davison
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 3 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, visit the http://fsf.org website.
  21  */
  22
  23 #include "rsync.h"
  24 #include "inums.h"
  25 #include "ifuncs.h"
  26
  27 extern int dry_run;
  28 extern int do_xfers;
  29 extern int stdout_format_has_i;
  30 extern int logfile_format_has_i;
  31 extern int am_root;
  32 extern int am_server;
  33 extern int am_daemon;
  34 extern int inc_recurse;
  35 extern int relative_paths;
  36 extern int implied_dirs;
  37 extern int keep_dirlinks;
  38 extern int preserve_acls;
  39 extern int preserve_xattrs;
  40 extern int preserve_links;
  41 extern int preserve_devices;
  42 extern int write_devices;
  43 extern int preserve_specials;
  44 extern int preserve_hard_links;
  45 extern int preserve_executability;
  46 extern int preserve_perms;
  47 extern int preserve_times;
  48 extern int delete_mode;
  49 extern int delete_before;
  50 extern int delete_during;
  51 extern int delete_after;
  52 extern int missing_args;
  53 extern int msgdone_cnt;
  54 extern int ignore_errors;
  55 extern int remove_source_files;
  56 extern int delay_updates;
  57 extern int update_only;
  58 extern int human_readable;
  59 extern int ignore_existing;
  60 extern int ignore_non_existing;
  61 extern int want_xattr_optim;
  62 extern int modify_window;
  63 extern int inplace;
  64 extern int append_mode;
  65 extern int make_backups;
  66 extern int csum_length;
  67 extern int ignore_times;
  68 extern int size_only;
  69 extern OFF_T max_size;
  70 extern OFF_T min_size;
  71 extern int io_error;
  72 extern int flist_eof;
  73 extern int allowed_lull;
  74 extern int sock_f_out;
  75 extern int protocol_version;
  76 extern int file_total;
  77 extern int fuzzy_basis;
  78 extern int always_checksum;
  79 extern int flist_csum_len;
  80 extern char *partial_dir;
  81 extern int alt_dest_type;
  82 extern int whole_file;
  83 extern int list_only;
  84 extern int read_batch;
  85 extern int write_batch;
  86 extern int safe_symlinks;
  87 extern int32 block_size;
  88 extern int unsort_ndx;
  89 extern int max_delete;
  90 extern int force_delete;
  91 extern int one_file_system;
  92 extern int skipped_deletes;
  93 extern dev_t filesystem_dev;
  94 extern mode_t orig_umask;
  95 extern uid_t our_uid;
  96 extern char *tmpdir;
  97 extern char *basis_dir[MAX_BASIS_DIRS+1];
  98 extern struct file_list *cur_flist, *first_flist, *dir_flist;
  99 extern filter_rule_list filter_list, daemon_filter_list;
 100
 101 int maybe_ATTRS_REPORT = 0;
 102 int maybe_ATTRS_ACCURATE_TIME = 0;
 103
 104 static dev_t dev_zero;
 105 static int deldelay_size = 0, deldelay_cnt = 0;
 106 static char *deldelay_buf = NULL;
 107 static int deldelay_fd = -1;
 108 static int loopchk_limit;
 109 static int dir_tweaking;
 110 static int symlink_timeset_failed_flags;
 111 static int need_retouch_dir_times;
 112 static int need_retouch_dir_perms;
 113 static const char *solo_file = NULL;
 114
 115 /* Forward declarations. */
 116 #ifdef SUPPORT_HARD_LINKS
 117 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
 118                                  enum logcode code, int f_out);
 119 #endif
 120
 121 #define EARLY_DELAY_DONE_MSG() (!delay_updates)
 122 #define EARLY_DELETE_DONE_MSG() (!(delete_during == 2 || delete_after))
 123
 124 static int start_delete_delay_temp(void)
 125 {
 126         char fnametmp[MAXPATHLEN];
 127         int save_dry_run = dry_run;
 128
 129         dry_run = 0;
 130         if (!get_tmpname(fnametmp, "deldelay", False)
 131          || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
 132                 rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
 133                         inc_recurse ? "" : " -- switching to --delete-after");
 134                 delete_during = 0;
 135                 delete_after = !inc_recurse;
 136                 dry_run = save_dry_run;
 137                 return 0;
 138         }
 139         unlink(fnametmp);
 140         dry_run = save_dry_run;
 141         return 1;
 142 }
 143
 144 static int flush_delete_delay(void)
 145 {
 146         if (deldelay_fd < 0 && !start_delete_delay_temp())
 147                 return 0;
 148         if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
 149                 rsyserr(FERROR, errno, "flush of delete-delay buffer");
 150                 delete_during = 0;
 151                 delete_after = !inc_recurse;
 152                 close(deldelay_fd);
 153                 return 0;
 154         }
 155         deldelay_cnt = 0;
 156         return 1;
 157 }
 158
 159 static int remember_delete(struct file_struct *file, const char *fname, int flags)
 160 {
 161         int len;
 162
 163         if (deldelay_cnt == deldelay_size && !flush_delete_delay())
 164                 return 0;
 165
 166         if (flags & DEL_NO_UID_WRITE)
 167                 deldelay_buf[deldelay_cnt++] = '!';
 168
 169         while (1) {
 170                 len = snprintf(deldelay_buf + deldelay_cnt, deldelay_size - deldelay_cnt,
 171                                "%x %s%c", (int)file->mode, fname, '\0');
 172                 if ((deldelay_cnt += len) <= deldelay_size)
 173                         break;
 174                 deldelay_cnt -= len;
 175                 if (!flush_delete_delay())
 176                         return 0;
 177         }
 178
 179         return 1;
 180 }
 181
 182 static int read_delay_line(char *buf, int *flags_p)
 183 {
 184         static int read_pos = 0;
 185         int j, len, mode;
 186         char *bp, *past_space;
 187
 188         while (1) {
 189                 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
 190                 if (j < deldelay_cnt)
 191                         break;
 192                 if (deldelay_fd < 0) {
 193                         if (j > read_pos)
 194                                 goto invalid_data;
 195                         return -1;
 196                 }
 197                 deldelay_cnt -= read_pos;
 198                 if (deldelay_cnt == deldelay_size)
 199                         goto invalid_data;
 200                 if (deldelay_cnt && read_pos) {
 201                         memmove(deldelay_buf, deldelay_buf + read_pos,
 202                                 deldelay_cnt);
 203                 }
 204                 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
 205                            deldelay_size - deldelay_cnt);
 206                 if (len == 0) {
 207                         if (deldelay_cnt) {
 208                                 rprintf(FERROR, "ERROR: unexpected EOF in delete-delay file.\n");
 209                         }
 210                         return -1;
 211                 }
 212                 if (len < 0) {
 213                         rsyserr(FERROR, errno,
 214                                 "reading delete-delay file");
 215                         return -1;
 216                 }
 217                 deldelay_cnt += len;
 218                 read_pos = 0;
 219         }
 220
 221         bp = deldelay_buf + read_pos;
 222         if (*bp == '!') {
 223                 bp++;
 224                 *flags_p = DEL_NO_UID_WRITE;
 225         } else
 226                 *flags_p = 0;
 227
 228         if (sscanf(bp, "%x ", &mode) != 1) {
 229           invalid_data:
 230                 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
 231                 return -1;
 232         }
 233         past_space = strchr(bp, ' ') + 1;
 234         len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
 235         read_pos = j + 1;
 236
 237         if (len > MAXPATHLEN) {
 238                 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
 239                 return -1;
 240         }
 241
 242         /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
 243          * instead of returning a pointer to our buffer. */
 244         memcpy(buf, past_space, len);
 245
 246         return mode;
 247 }
 248
 249 static void do_delayed_deletions(char *delbuf)
 250 {
 251         int mode, flags;
 252
 253         if (deldelay_fd >= 0) {
 254                 if (deldelay_cnt && !flush_delete_delay())
 255                         return;
 256                 lseek(deldelay_fd, 0, 0);
 257         }
 258         while ((mode = read_delay_line(delbuf, &flags)) >= 0)
 259                 delete_item(delbuf, mode, flags | DEL_RECURSE);
 260         if (deldelay_fd >= 0)
 261                 close(deldelay_fd);
 262 }
 263
 264 /* This function is used to implement per-directory deletion, and is used by
 265  * all the --delete-WHEN options.  Note that the fbuf pointer must point to a
 266  * MAXPATHLEN buffer with the name of the directory in it (the functions we
 267  * call will append names onto the end, but the old dir value will be restored
 268  * on exit). */
 269 static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
 270 {
 271         static int already_warned = 0;
 272         static struct hashtable *dev_tbl;
 273         struct file_list *dirlist;
 274         char delbuf[MAXPATHLEN];
 275         int dlen, i;
 276
 277         if (!fbuf) {
 278                 change_local_filter_dir(NULL, 0, 0);
 279                 return;
 280         }
 281
 282         if (DEBUG_GTE(DEL, 2))
 283                 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
 284
 285         if (allowed_lull)
 286                 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
 287
 288         if (io_error & IOERR_GENERAL && !ignore_errors) {
 289                 if (already_warned)
 290                         return;
 291                 rprintf(FINFO,
 292                         "IO error encountered -- skipping file deletion\n");
 293                 already_warned = 1;
 294                 return;
 295         }
 296
 297         dlen = strlen(fbuf);
 298         change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
 299
 300         if (one_file_system) {
 301                 if (!dev_tbl)
 302                         dev_tbl = hashtable_create(16, HT_KEY64);
 303                 if (file->flags & FLAG_TOP_DIR) {
 304                         hashtable_find(dev_tbl, *fs_dev+1, "");
 305                         filesystem_dev = *fs_dev;
 306                 } else if (filesystem_dev != *fs_dev) {
 307                         if (!hashtable_find(dev_tbl, *fs_dev+1, NULL))
 308                                 return;
 309                         filesystem_dev = *fs_dev; /* it's a prior top-dir dev */
 310                 }
 311         }
 312
 313         dirlist = get_dirlist(fbuf, dlen, 0);
 314
 315         /* If an item in dirlist is not found in flist, delete it
 316          * from the filesystem. */
 317         for (i = dirlist->used; i--; ) {
 318                 struct file_struct *fp = dirlist->files[i];
 319                 if (!F_IS_ACTIVE(fp))
 320                         continue;
 321                 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
 322                         if (INFO_GTE(MOUNT, 1))
 323                                 rprintf(FINFO, "cannot delete mount point: %s\n",
 324                                         f_name(fp, NULL));
 325                         continue;
 326                 }
 327                 /* Here we want to match regardless of file type.  Replacement
 328                  * of a file with one of another type is handled separately by
 329                  * a delete_item call with a DEL_MAKE_ROOM flag. */
 330                 if (flist_find_ignore_dirness(cur_flist, fp) < 0) {
 331                         int flags = DEL_RECURSE;
 332                         if (!(fp->mode & S_IWUSR) && !am_root && fp->flags & FLAG_OWNED_BY_US)
 333                                 flags |= DEL_NO_UID_WRITE;
 334                         f_name(fp, delbuf);
 335                         if (delete_during == 2) {
 336                                 if (!remember_delete(fp, delbuf, flags))
 337                                         break;
 338                         } else
 339                                 delete_item(delbuf, fp->mode, flags);
 340                 }
 341         }
 342
 343         flist_free(dirlist);
 344 }
 345
 346 /* This deletes any files on the receiving side that are not present on the
 347  * sending side.  This is used by --delete-before and --delete-after. */
 348 static void do_delete_pass(void)
 349 {
 350         char fbuf[MAXPATHLEN];
 351         STRUCT_STAT st;
 352         int j;
 353
 354         /* dry_run is incremented when the destination doesn't exist yet. */
 355         if (dry_run > 1 || list_only)
 356                 return;
 357
 358         for (j = 0; j < cur_flist->used; j++) {
 359                 struct file_struct *file = cur_flist->sorted[j];
 360
 361                 if (!F_IS_ACTIVE(file))
 362                         continue;
 363
 364                 f_name(file, fbuf);
 365
 366                 if (!(file->flags & FLAG_CONTENT_DIR)) {
 367                         change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
 368                         continue;
 369                 }
 370
 371                 if (DEBUG_GTE(DEL, 1) && file->flags & FLAG_TOP_DIR)
 372                         rprintf(FINFO, "deleting in %s\n", fbuf);
 373
 374                 if (link_stat(fbuf, &st, keep_dirlinks) < 0
 375                  || !S_ISDIR(st.st_mode))
 376                         continue;
 377
 378                 delete_in_dir(fbuf, file, &st.st_dev);
 379         }
 380         delete_in_dir(NULL, NULL, &dev_zero);
 381
 382         if (INFO_GTE(FLIST, 2) && !am_server)
 383                 rprintf(FINFO, "                    \r");
 384 }
 385
 386 static inline int mtime_differs(STRUCT_STAT *stp, struct file_struct *file)
 387 {
 388 #ifdef ST_MTIME_NSEC
 389         return !same_time(stp->st_mtime, stp->ST_MTIME_NSEC, file->modtime, F_MOD_NSEC_or_0(file));
 390 #else
 391         return !same_time(stp->st_mtime, 0, file->modtime, 0);
 392 #endif
 393 }
 394
 395 static inline int any_time_differs(stat_x *sxp, struct file_struct *file, UNUSED(const char *fname))
 396 {
 397         int differs = mtime_differs(&sxp->st, file);
 398 #ifdef SUPPORT_CRTIMES
 399         if (!differs && crtimes_ndx) {
 400                 if (sxp->crtime == 0)
 401                         sxp->crtime = get_create_time(fname);
 402                 differs = !same_time(sxp->crtime, 0, F_CRTIME(file), 0);
 403         }
 404 #endif
 405         return differs;
 406 }
 407
 408 static inline int perms_differ(struct file_struct *file, stat_x *sxp)
 409 {
 410         if (preserve_perms)
 411                 return !BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS);
 412
 413         if (preserve_executability)
 414                 return (sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0);
 415
 416         return 0;
 417 }
 418
 419 static inline int ownership_differs(struct file_struct *file, stat_x *sxp)
 420 {
 421         if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
 422                 return 1;
 423
 424         if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
 425                 return 1;
 426
 427         return 0;
 428 }
 429
 430 #ifdef SUPPORT_ACLS
 431 static inline int acls_differ(const char *fname, struct file_struct *file, stat_x *sxp)
 432 {
 433         if (preserve_acls) {
 434                 if (!ACL_READY(*sxp))
 435                         get_acl(fname, sxp);
 436                 if (set_acl(NULL, file, sxp, file->mode))
 437                         return 1;
 438         }
 439
 440         return 0;
 441 }
 442 #endif
 443
 444 #ifdef SUPPORT_XATTRS
 445 static inline int xattrs_differ(const char *fname, struct file_struct *file, stat_x *sxp)
 446 {
 447         if (preserve_xattrs) {
 448                 if (!XATTR_READY(*sxp))
 449                         get_xattr(fname, sxp);
 450                 if (xattr_diff(file, sxp, 0))
 451                         return 1;
 452         }
 453
 454         return 0;
 455 }
 456 #endif
 457
 458 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
 459 {
 460         if (S_ISLNK(file->mode)) {
 461 #ifdef CAN_SET_SYMLINK_TIMES
 462                 if (preserve_times & PRESERVE_LINK_TIMES && any_time_differs(sxp, file, fname))
 463                         return 0;
 464 #endif
 465 #ifdef CAN_CHMOD_SYMLINK
 466                 if (perms_differ(file, sxp))
 467                         return 0;
 468 #endif
 469 #ifdef CAN_CHOWN_SYMLINK
 470                 if (ownership_differs(file, sxp))
 471                         return 0;
 472 #endif
 473 #if defined SUPPORT_ACLS && 0 /* no current symlink-ACL support */
 474                 if (acls_differ(fname, file, sxp))
 475                         return 0;
 476 #endif
 477 #if defined SUPPORT_XATTRS && !defined NO_SYMLINK_XATTRS
 478                 if (xattrs_differ(fname, file, sxp))
 479                         return 0;
 480 #endif
 481         } else {
 482                 if (preserve_times && any_time_differs(sxp, file, fname))
 483                         return 0;
 484                 if (perms_differ(file, sxp))
 485                         return 0;
 486                 if (ownership_differs(file, sxp))
 487                         return 0;
 488 #ifdef SUPPORT_ACLS
 489                 if (acls_differ(fname, file, sxp))
 490                         return 0;
 491 #endif
 492 #ifdef SUPPORT_XATTRS
 493                 if (xattrs_differ(fname, file, sxp))
 494                         return 0;
 495 #endif
 496         }
 497
 498         return 1;
 499 }
 500
 501 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
 502              stat_x *sxp, int32 iflags, uchar fnamecmp_type,
 503              const char *xname)
 504 {
 505         if (statret >= 0) { /* A from-dest-dir statret can == 1! */
 506                 int keep_time = !preserve_times ? 0
 507                     : S_ISDIR(file->mode) ? preserve_times & PRESERVE_DIR_TIMES
 508                     : S_ISLNK(file->mode) ? preserve_times & PRESERVE_LINK_TIMES
 509                     : 1;
 510
 511                 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
 512                         iflags |= ITEM_REPORT_SIZE;
 513                 if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
 514                         if (iflags & ITEM_LOCAL_CHANGE)
 515                                 iflags |= symlink_timeset_failed_flags;
 516                 } else if (keep_time
 517                  ? mtime_differs(&sxp->st, file)
 518                  : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
 519                   && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
 520                         iflags |= ITEM_REPORT_TIME;
 521                 if (atimes_ndx && !S_ISDIR(file->mode) && !S_ISLNK(file->mode)
 522                  && !same_time(F_ATIME(file), 0, sxp->st.st_atime, 0))
 523                         iflags |= ITEM_REPORT_ATIME;
 524 #ifdef SUPPORT_CRTIMES
 525                 if (crtimes_ndx) {
 526                         if (sxp->crtime == 0)
 527                                 sxp->crtime = get_create_time(fnamecmp);
 528                         if (!same_time(sxp->crtime, 0, F_CRTIME(file), 0))
 529                                 iflags |= ITEM_REPORT_CRTIME;
 530                 }
 531 #endif
 532 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
 533                 if (S_ISLNK(file->mode)) {
 534                         ;
 535                 } else
 536 #endif
 537                 if (preserve_perms) {
 538                         if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
 539                                 iflags |= ITEM_REPORT_PERMS;
 540                 } else if (preserve_executability
 541                  && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
 542                         iflags |= ITEM_REPORT_PERMS;
 543                 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
 544                         iflags |= ITEM_REPORT_OWNER;
 545                 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
 546                         iflags |= ITEM_REPORT_GROUP;
 547 #ifdef SUPPORT_ACLS
 548                 if (preserve_acls && !S_ISLNK(file->mode)) {
 549                         if (!ACL_READY(*sxp))
 550                                 get_acl(fnamecmp, sxp);
 551                         if (set_acl(NULL, file, sxp, file->mode))
 552                                 iflags |= ITEM_REPORT_ACL;
 553                 }
 554 #endif
 555 #ifdef SUPPORT_XATTRS
 556                 if (preserve_xattrs) {
 557                         if (!XATTR_READY(*sxp))
 558                                 get_xattr(fnamecmp, sxp);
 559                         if (xattr_diff(file, sxp, 1))
 560                                 iflags |= ITEM_REPORT_XATTR;
 561                 }
 562 #endif
 563         } else {
 564 #ifdef SUPPORT_XATTRS
 565                 if (preserve_xattrs && xattr_diff(file, NULL, 1))
 566                         iflags |= ITEM_REPORT_XATTR;
 567 #endif
 568                 iflags |= ITEM_IS_NEW;
 569         }
 570
 571         iflags &= 0xffff;
 572         if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || INFO_GTE(NAME, 2)
 573           || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
 574                 if (protocol_version >= 29) {
 575                         if (ndx >= 0)
 576                                 write_ndx(sock_f_out, ndx);
 577                         write_shortint(sock_f_out, iflags);
 578                         if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
 579                                 write_byte(sock_f_out, fnamecmp_type);
 580                         if (iflags & ITEM_XNAME_FOLLOWS)
 581                                 write_vstring(sock_f_out, xname, strlen(xname));
 582 #ifdef SUPPORT_XATTRS
 583                         if (preserve_xattrs && do_xfers
 584                          && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
 585                                 int fd = iflags & ITEM_REPORT_XATTR
 586                                       && !(want_xattr_optim && BITS_SET(iflags, ITEM_XNAME_FOLLOWS|ITEM_LOCAL_CHANGE))
 587                                        ? sock_f_out : -1;
 588                                 send_xattr_request(NULL, file, fd);
 589                         }
 590 #endif
 591                 } else if (ndx >= 0) {
 592                         enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
 593                         log_item(code, file, iflags, xname);
 594                 }
 595         }
 596 }
 597
 598 static enum filetype get_file_type(mode_t mode)
 599 {
 600         if (S_ISREG(mode))
 601                 return FT_REG;
 602         if (S_ISLNK(mode))
 603                 return FT_SYMLINK;
 604         if (S_ISDIR(mode))
 605                 return FT_DIR;
 606         if (IS_SPECIAL(mode))
 607                 return FT_SPECIAL;
 608         if (IS_DEVICE(mode))
 609                 return FT_DEVICE;
 610         return FT_UNSUPPORTED;
 611 }
 612
 613 /* Perform our quick-check heuristic for determining if a file is unchanged. */
 614 int quick_check_ok(enum filetype ftype, const char *fn, struct file_struct *file, STRUCT_STAT *st)
 615 {
 616         switch (ftype) {
 617           case FT_REG:
 618                 if (st->st_size != F_LENGTH(file))
 619                         return 0;
 620
 621                 /* If always_checksum is set then we use the checksum instead
 622                  * of the file mtime to determine whether to sync. */
 623                 if (always_checksum > 0) {
 624                         char sum[MAX_DIGEST_LEN];
 625                         file_checksum(fn, st, sum);
 626                         return memcmp(sum, F_SUM(file), flist_csum_len) == 0;
 627                 }
 628
 629                 if (size_only > 0)
 630                         return 1;
 631
 632                 if (ignore_times)
 633                         return 0;
 634
 635                 if (mtime_differs(st, file))
 636                         return 0;
 637                 break;
 638           case FT_DIR:
 639                 break;
 640           case FT_SYMLINK: {
 641 #ifdef SUPPORT_LINKS
 642                 char lnk[MAXPATHLEN];
 643                 int len = do_readlink(fn, lnk, MAXPATHLEN-1);
 644                 if (len <= 0)
 645                         return 0;
 646                 lnk[len] = '\0';
 647                 if (strcmp(lnk, F_SYMLINK(file)) != 0)
 648                         return 0;
 649                 break;
 650 #else
 651                 return -1;
 652 #endif
 653           }
 654           case FT_SPECIAL:
 655                 if (!BITS_EQUAL(file->mode, st->st_mode, _S_IFMT))
 656                         return 0;
 657                 break;
 658           case FT_DEVICE: {
 659                 uint32 *devp = F_RDEV_P(file);
 660                 if (st->st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
 661                         return 0;
 662                 break;
 663           }
 664           case FT_UNSUPPORTED:
 665                 return -1;
 666         }
 667         return 1;
 668 }
 669
 670 /*
 671  * set (initialize) the size entries in the per-file sum_struct
 672  * calculating dynamic block and checksum sizes.
 673  *
 674  * This is only called from generate_and_send_sums() but is a separate
 675  * function to encapsulate the logic.
 676  *
 677  * The block size is a rounded square root of file length.
 678  *
 679  * The checksum size is determined according to:
 680  *     blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
 681  * provided by Donovan Baarda which gives a probability of rsync
 682  * algorithm corrupting data and falling back using the whole md4
 683  * checksums.
 684  *
 685  * This might be made one of several selectable heuristics.
 686  */
 687 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
 688 {
 689         int32 blength;
 690         int s2length;
 691         int64 l;
 692
 693         if (len < 0) {
 694                 /* The file length overflowed our int64 var, so we can't process this file. */
 695                 sum->count = -1; /* indicate overflow error */
 696                 return;
 697         }
 698
 699         if (block_size)
 700                 blength = block_size;
 701         else if (len <= BLOCK_SIZE * BLOCK_SIZE)
 702                 blength = BLOCK_SIZE;
 703         else {
 704                 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
 705                 int32 c;
 706                 int cnt;
 707                 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
 708                 if (c < 0 || c >= max_blength)
 709                         blength = max_blength;
 710                 else {
 711                         blength = 0;
 712                         do {
 713                                 blength |= c;
 714                                 if (len < (int64)blength * blength)
 715                                         blength &= ~c;
 716                                 c >>= 1;
 717                         } while (c >= 8);       /* round to multiple of 8 */
 718                         blength = MAX(blength, BLOCK_SIZE);
 719                 }
 720         }
 721
 722         if (protocol_version < 27) {
 723                 s2length = csum_length;
 724         } else if (csum_length == SUM_LENGTH) {
 725                 s2length = SUM_LENGTH;
 726         } else {
 727                 int32 c;
 728                 int b = BLOCKSUM_BIAS;
 729                 for (l = len; l >>= 1; b += 2) {}
 730                 for (c = blength; (c >>= 1) && b; b--) {}
 731                 /* add a bit, subtract rollsum, round up. */
 732                 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
 733                 s2length = MAX(s2length, csum_length);
 734                 s2length = MIN(s2length, SUM_LENGTH);
 735         }
 736
 737         sum->flength    = len;
 738         sum->blength    = blength;
 739         sum->s2length   = s2length;
 740         sum->remainder  = (int32)(len % blength);
 741         sum->count      = (int32)(l = (len / blength) + (sum->remainder != 0));
 742
 743         if ((int64)sum->count != l)
 744                 sum->count = -1;
 745
 746         if (sum->count && DEBUG_GTE(DELTASUM, 2)) {
 747                 rprintf(FINFO,
 748                         "count=%s rem=%ld blength=%ld s2length=%d flength=%s\n",
 749                         big_num(sum->count), (long)sum->remainder, (long)sum->blength,
 750                         sum->s2length, big_num(sum->flength));
 751         }
 752 }
 753
 754
 755 /*
 756  * Generate and send a stream of signatures/checksums that describe a buffer
 757  *
 758  * Generate approximately one checksum every block_len bytes.
 759  */
 760 static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
 761 {
 762         int32 i;
 763         struct map_struct *mapbuf;
 764         struct sum_struct sum;
 765         OFF_T offset = 0;
 766
 767         sum_sizes_sqroot(&sum, len);
 768         if (sum.count < 0)
 769                 return -1;
 770         write_sum_head(f_out, &sum);
 771
 772         if (append_mode > 0 && f_copy < 0)
 773                 return 0;
 774
 775         if (len > 0)
 776                 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
 777         else
 778                 mapbuf = NULL;
 779
 780         for (i = 0; i < sum.count; i++) {
 781                 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
 782                 char *map = map_ptr(mapbuf, offset, n1);
 783                 char sum2[SUM_LENGTH];
 784                 uint32 sum1;
 785
 786                 len -= n1;
 787                 offset += n1;
 788
 789                 if (f_copy >= 0) {
 790                         full_write(f_copy, map, n1);
 791                         if (append_mode > 0)
 792                                 continue;
 793                 }
 794
 795                 sum1 = get_checksum1(map, n1);
 796                 get_checksum2(map, n1, sum2);
 797
 798                 if (DEBUG_GTE(DELTASUM, 3)) {
 799                         rprintf(FINFO,
 800                                 "chunk[%s] offset=%s len=%ld sum1=%08lx\n",
 801                                 big_num(i), big_num(offset - n1), (long)n1,
 802                                 (unsigned long)sum1);
 803                 }
 804                 write_int(f_out, sum1);
 805                 write_buf(f_out, sum2, sum.s2length);
 806         }
 807
 808         if (mapbuf)
 809                 unmap_file(mapbuf);
 810
 811         return 0;
 812 }
 813
 814
 815 /* Try to find a filename in the same dir as "fname" with a similar name. */
 816 static struct file_struct *find_fuzzy(struct file_struct *file, struct file_list *dirlist_array[], uchar *fnamecmp_type_ptr)
 817 {
 818         int fname_len, fname_suf_len;
 819         const char *fname_suf, *fname = file->basename;
 820         uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
 821         int i, j;
 822         struct file_struct *lowest_fp = NULL;
 823
 824         fname_len = strlen(fname);
 825         fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
 826
 827         /* Try to find an exact size+mtime match first. */
 828         for (i = 0; i < fuzzy_basis; i++) {
 829                 struct file_list *dirlist = dirlist_array[i];
 830
 831                 if (!dirlist)
 832                         continue;
 833
 834                 for (j = 0; j < dirlist->used; j++) {
 835                         struct file_struct *fp = dirlist->files[j];
 836
 837                         if (!F_IS_ACTIVE(fp))
 838                                 continue;
 839
 840                         if (!S_ISREG(fp->mode) || !F_LENGTH(fp) || fp->flags & FLAG_FILE_SENT)
 841                                 continue;
 842
 843                         if (F_LENGTH(fp) == F_LENGTH(file) && same_time(fp->modtime, 0, file->modtime, 0)) {
 844                                 if (DEBUG_GTE(FUZZY, 2))
 845                                         rprintf(FINFO, "fuzzy size/modtime match for %s\n", f_name(fp, NULL));
 846                                 *fnamecmp_type_ptr = FNAMECMP_FUZZY + i;
 847                                 return fp;
 848                         }
 849
 850                 }
 851         }
 852
 853         for (i = 0; i < fuzzy_basis; i++) {
 854                 struct file_list *dirlist = dirlist_array[i];
 855
 856                 if (!dirlist)
 857                         continue;
 858
 859                 for (j = 0; j < dirlist->used; j++) {
 860                         struct file_struct *fp = dirlist->files[j];
 861                         const char *suf, *name;
 862                         int len, suf_len;
 863                         uint32 dist;
 864
 865                         if (!F_IS_ACTIVE(fp))
 866                                 continue;
 867
 868                         if (!S_ISREG(fp->mode) || !F_LENGTH(fp) || fp->flags & FLAG_FILE_SENT)
 869                                 continue;
 870
 871                         name = fp->basename;
 872                         len = strlen(name);
 873                         suf = find_filename_suffix(name, len, &suf_len);
 874
 875                         dist = fuzzy_distance(name, len, fname, fname_len);
 876                         /* Add some extra weight to how well the suffixes match. */
 877                         dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len) * 10;
 878                         if (DEBUG_GTE(FUZZY, 2)) {
 879                                 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
 880                                         f_name(fp, NULL), (int)(dist>>16), (int)(dist&0xFFFF));
 881                         }
 882                         if (dist <= lowest_dist) {
 883                                 lowest_dist = dist;
 884                                 lowest_fp = fp;
 885                                 *fnamecmp_type_ptr = FNAMECMP_FUZZY + i;
 886                         }
 887                 }
 888         }
 889
 890         return lowest_fp;
 891 }
 892
 893 /* Copy a file found in our --copy-dest handling. */
 894 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
 895 {
 896         char buf[MAXPATHLEN];
 897         const char *copy_to, *partialptr;
 898         int save_preserve_xattrs = preserve_xattrs;
 899         int ok, fd_w;
 900
 901         if (inplace) {
 902                 /* Let copy_file open the destination in place. */
 903                 fd_w = -1;
 904                 copy_to = dest;
 905         } else {
 906                 fd_w = open_tmpfile(buf, dest, file);
 907                 if (fd_w < 0)
 908                         return -1;
 909                 copy_to = buf;
 910         }
 911         cleanup_set(copy_to, NULL, NULL, -1, -1);
 912         if (copy_file(src, copy_to, fd_w, file->mode) < 0) {
 913                 if (INFO_GTE(COPY, 1)) {
 914                         rsyserr(FINFO, errno, "copy_file %s => %s",
 915                                 full_fname(src), copy_to);
 916                 }
 917                 /* Try to clean up. */
 918                 unlink(copy_to);
 919                 cleanup_disable();
 920                 return -1;
 921         }
 922         partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
 923         preserve_xattrs = 0; /* xattrs were copied with file */
 924         ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
 925         preserve_xattrs = save_preserve_xattrs;
 926         cleanup_disable();
 927         return ok ? 0 : -1;
 928 }
 929
 930 /* This is only called for regular files.  We return -2 if we've finished
 931  * handling the file, -1 if no dest-linking occurred, or a non-negative
 932  * value if we found an alternate basis file.  If we're called with the
 933  * find_exact_for_existing flag, the destination file already exists, so
 934  * we only try to find an exact alt-dest match.  In this case, the returns
 935  * are only -2 & -1 (both as above). */
 936 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
 937                          char *cmpbuf, stat_x *sxp, int find_exact_for_existing,
 938                          int itemizing, enum logcode code)
 939 {
 940         STRUCT_STAT real_st = sxp->st;
 941         int best_match = -1;
 942         int match_level = 0;
 943         int j = 0;
 944
 945         do {
 946                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 947                 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
 948                         continue;
 949                 if (match_level == 0) {
 950                         best_match = j;
 951                         match_level = 1;
 952                 }
 953                 if (!quick_check_ok(FT_REG, cmpbuf, file, &sxp->st))
 954                         continue;
 955                 if (match_level == 1) {
 956                         best_match = j;
 957                         match_level = 2;
 958                 }
 959                 if (unchanged_attrs(cmpbuf, file, sxp)) {
 960                         best_match = j;
 961                         match_level = 3;
 962                         break;
 963                 }
 964                 free_stat_x(sxp);
 965         } while (basis_dir[++j] != NULL);
 966
 967         if (!match_level)
 968                 goto got_nothing_for_ya;
 969
 970         if (j != best_match) {
 971                 j = best_match;
 972                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 973                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
 974                         goto got_nothing_for_ya;
 975         }
 976
 977         if (match_level == 3 && alt_dest_type != COPY_DEST) {
 978                 if (find_exact_for_existing) {
 979                         if (alt_dest_type == LINK_DEST && real_st.st_dev == sxp->st.st_dev && real_st.st_ino == sxp->st.st_ino)
 980                                 return -1;
 981                         if (do_unlink(fname) < 0 && errno != ENOENT)
 982                                 goto got_nothing_for_ya;
 983                 }
 984 #ifdef SUPPORT_HARD_LINKS
 985                 if (alt_dest_type == LINK_DEST) {
 986                         if (!hard_link_one(file, fname, cmpbuf, 1))
 987                                 goto try_a_copy;
 988                         if (atimes_ndx)
 989                                 set_file_attrs(fname, file, sxp, NULL, 0);
 990                         if (preserve_hard_links && F_IS_HLINKED(file))
 991                                 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
 992                         if (!maybe_ATTRS_REPORT && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
 993                                 itemize(cmpbuf, file, ndx, 1, sxp,
 994                                         ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
 995                                         0, "");
 996                         }
 997                 } else
 998 #endif
 999                 {
1000                         if (itemizing)
1001                                 itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
1002                 }
1003                 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
1004                         rprintf(FCLIENT, "%s is uptodate\n", fname);
1005                 return -2;
1006         }
1007
1008         if (find_exact_for_existing)
1009                 goto got_nothing_for_ya;
1010
1011         if (match_level >= 2) {
1012 #ifdef SUPPORT_HARD_LINKS
1013           try_a_copy: /* Copy the file locally. */
1014 #endif
1015                 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0) {
1016                         if (find_exact_for_existing) /* Can get here via hard-link failure */
1017                                 goto got_nothing_for_ya;
1018                         return -1;
1019                 }
1020                 if (itemizing)
1021                         itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
1022                 if (maybe_ATTRS_REPORT
1023                  && ((!itemizing && INFO_GTE(NAME, 1) && match_level == 2)
1024                   || (INFO_GTE(NAME, 2) && match_level == 3))) {
1025                         code = match_level == 3 ? FCLIENT : FINFO;
1026                         rprintf(code, "%s%s\n", fname,
1027                                 match_level == 3 ? " is uptodate" : "");
1028                 }
1029 #ifdef SUPPORT_HARD_LINKS
1030                 if (preserve_hard_links && F_IS_HLINKED(file))
1031                         finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
1032 #endif
1033                 return -2;
1034         }
1035
1036         return FNAMECMP_BASIS_DIR_LOW + j;
1037
1038 got_nothing_for_ya:
1039         sxp->st = real_st;
1040         return -1;
1041 }
1042
1043 /* This is only called for non-regular files.  We return -2 if we've finished
1044  * handling the file, or -1 if no dest-linking occurred, or a non-negative
1045  * value if we found an alternate basis file. */
1046 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
1047                          char *cmpbuf, stat_x *sxp, int itemizing,
1048                          enum logcode code)
1049 {
1050         int best_match = -1;
1051         int match_level = 0;
1052         enum filetype ftype = get_file_type(file->mode);
1053         int j = 0;
1054
1055 #ifndef SUPPORT_LINKS
1056         if (ftype == FT_SYMLINK)
1057                 return -1;
1058 #endif
1059         if (ftype == FT_REG || ftype == FT_UNSUPPORTED) {
1060                 rprintf(FERROR,
1061                         "internal: try_dests_non() called with invalid mode (%o)\n",
1062                         (int)file->mode);
1063                 exit_cleanup(RERR_UNSUPPORTED);
1064         }
1065
1066         do {
1067                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1068                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1069                         continue;
1070                 if (ftype != get_file_type(sxp->st.st_mode))
1071                         continue;
1072                 if (match_level < 1) {
1073                         match_level = 1;
1074                         best_match = j;
1075                 }
1076                 if (!quick_check_ok(ftype, cmpbuf, file, &sxp->st))
1077                         continue;
1078                 if (match_level < 2) {
1079                         match_level = 2;
1080                         best_match = j;
1081                 }
1082                 if (unchanged_attrs(cmpbuf, file, sxp)) {
1083                         match_level = 3;
1084                         best_match = j;
1085                         break;
1086                 }
1087         } while (basis_dir[++j] != NULL);
1088
1089         if (!match_level)
1090                 return -1;
1091
1092         if (j != best_match) {
1093                 j = best_match;
1094                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1095                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1096                         return -1;
1097         }
1098
1099         if (match_level == 3) {
1100 #ifdef SUPPORT_HARD_LINKS
1101                 if (alt_dest_type == LINK_DEST
1102 #ifndef CAN_HARDLINK_SYMLINK
1103                  && !S_ISLNK(file->mode)
1104 #endif
1105 #ifndef CAN_HARDLINK_SPECIAL
1106                  && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1107 #endif
1108                  && !S_ISDIR(file->mode)) {
1109                         if (do_link(cmpbuf, fname) < 0) {
1110                                 rsyserr(FERROR_XFER, errno,
1111                                         "failed to hard-link %s with %s",
1112                                         cmpbuf, fname);
1113                                 return j;
1114                         }
1115                         if (preserve_hard_links && F_IS_HLINKED(file))
1116                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1117                 } else
1118 #endif
1119                         match_level = 2;
1120                 if (itemizing && stdout_format_has_i
1121                  && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1122                         int chg = alt_dest_type == COMPARE_DEST && ftype != FT_DIR ? 0
1123                             : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1124                         char *lp = match_level == 3 ? "" : NULL;
1125                         itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1126                 }
1127                 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) {
1128                         rprintf(FCLIENT, "%s%s is uptodate\n",
1129                                 fname, ftype == FT_DIR ? "/" : "");
1130                 }
1131                 return -2;
1132         }
1133
1134         return j;
1135 }
1136
1137 static void list_file_entry(struct file_struct *f)
1138 {
1139         char permbuf[PERMSTRING_SIZE];
1140         const char *mtime_str = timestring(f->modtime);
1141         int size_width = human_readable ? 14 : 11;
1142         int mtime_width = 1 + strlen(mtime_str);
1143         int atime_width = atimes_ndx ? mtime_width : 0;
1144         int crtime_width = crtimes_ndx ? mtime_width : 0;
1145
1146         if (!F_IS_ACTIVE(f)) {
1147                 /* this can happen if duplicate names were removed */
1148                 return;
1149         }
1150
1151         /* TODO: indicate '+' if the entry has an ACL. */
1152
1153         if (missing_args == 2 && f->mode == 0) {
1154                 rprintf(FINFO, "%-*s %s\n",
1155                         10 + 1 + size_width + mtime_width + atime_width + crtime_width, "*missing",
1156                         f_name(f, NULL));
1157         } else {
1158                 const char *atime_str = atimes_ndx && !S_ISDIR(f->mode) ? timestring(F_ATIME(f)) : "";
1159                 const char *crtime_str = crtimes_ndx ? timestring(F_CRTIME(f)) : "";
1160                 const char *arrow, *lnk;
1161
1162                 permstring(permbuf, f->mode);
1163
1164 #ifdef SUPPORT_LINKS
1165                 if (preserve_links && S_ISLNK(f->mode)) {
1166                         arrow = " -> ";
1167                         lnk = F_SYMLINK(f);
1168                 } else
1169 #endif
1170                         arrow = lnk = "";
1171
1172                 rprintf(FINFO, "%s %*s %s%*s%*s %s%s%s\n",
1173                         permbuf, size_width, human_num(F_LENGTH(f)),
1174                         timestring(f->modtime), atime_width, atime_str, crtime_width, crtime_str,
1175                         f_name(f, NULL), arrow, lnk);
1176         }
1177 }
1178
1179 static int phase = 0;
1180 static int dflt_perms;
1181
1182 static int implied_dirs_are_missing;
1183 /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1184 static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1185 {
1186         return F_DEPTH(file) > F_DEPTH(subtree)
1187                 && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1188 }
1189
1190 /* Acts on the indicated item in cur_flist whose name is fname.  If a dir,
1191  * make sure it exists, and has the right permissions/timestamp info.  For
1192  * all other non-regular files (symlinks, etc.) we create them here.  For
1193  * regular files that have changed, we try to find a basis file and then
1194  * start sending checksums.  The ndx is the file's unique index value.
1195  *
1196  * The fname parameter must point to a MAXPATHLEN buffer!  (e.g it gets
1197  * passed to delete_item(), which can use it during a recursive delete.)
1198  *
1199  * Note that f_out is set to -1 when doing final directory-permission and
1200  * modification-time repair. */
1201 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1202                            int itemizing, enum logcode code, int f_out)
1203 {
1204         static const char *parent_dirname = "";
1205         static struct file_struct *prior_dir_file = NULL;
1206         /* Missing dir not created due to --dry-run; will still be scanned. */
1207         static struct file_struct *dry_missing_dir = NULL;
1208         /* Missing dir whose contents are skipped altogether due to
1209          * --ignore-non-existing, daemon exclude, or mkdir failure. */
1210         static struct file_struct *skip_dir = NULL;
1211         static struct file_list *fuzzy_dirlist[MAX_BASIS_DIRS+1];
1212         static int need_fuzzy_dirlist = 0;
1213         struct file_struct *fuzzy_file = NULL;
1214         int fd = -1, f_copy = -1;
1215         stat_x sx, real_sx;
1216         STRUCT_STAT partial_st;
1217         struct file_struct *back_file = NULL;
1218         int statret, real_ret, stat_errno;
1219         char *fnamecmp, *partialptr, *backupptr = NULL;
1220         char fnamecmpbuf[MAXPATHLEN];
1221         uchar fnamecmp_type;
1222         int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1223         enum filetype stype, ftype = get_file_type(file->mode);
1224         int is_dir = ftype != FT_DIR ? 0
1225                    : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1226                    : 1;
1227
1228         if (DEBUG_GTE(GENR, 1))
1229                 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1230
1231         if (list_only) {
1232                 if (is_dir < 0
1233                  || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1234                         return;
1235                 list_file_entry(file);
1236                 return;
1237         }
1238
1239         maybe_ATTRS_ACCURATE_TIME = always_checksum ? ATTRS_ACCURATE_TIME : 0;
1240
1241         if (skip_dir) {
1242                 if (is_below(file, skip_dir)) {
1243                         if (is_dir)
1244                                 file->flags |= FLAG_MISSING_DIR;
1245 #ifdef SUPPORT_HARD_LINKS
1246                         else if (F_IS_HLINKED(file))
1247                                 handle_skipped_hlink(file, itemizing, code, f_out);
1248 #endif
1249                         return;
1250                 }
1251                 skip_dir = NULL;
1252         }
1253
1254         init_stat_x(&sx);
1255         if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1256                 if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1257                         if (is_dir < 0)
1258                                 return;
1259 #ifdef SUPPORT_HARD_LINKS
1260                         if (F_IS_HLINKED(file))
1261                                 handle_skipped_hlink(file, itemizing, code, f_out);
1262 #endif
1263                         rprintf(FERROR_XFER,
1264                                 "ERROR: daemon refused to receive %s \"%s\"\n",
1265                                 is_dir ? "directory" : "file", fname);
1266                         if (is_dir)
1267                                 goto skipping_dir_contents;
1268                         return;
1269                 }
1270         }
1271         sx.crtime = 0;
1272
1273         if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1274                 int i;
1275           parent_is_dry_missing:
1276                 for (i = 0; i < fuzzy_basis; i++) {
1277                         if (fuzzy_dirlist[i]) {
1278                                 flist_free(fuzzy_dirlist[i]);
1279                                 fuzzy_dirlist[i] = NULL;
1280                         }
1281                 }
1282                 parent_dirname = "";
1283                 statret = -1;
1284                 stat_errno = ENOENT;
1285         } else {
1286                 const char *dn = file->dirname ? file->dirname : ".";
1287                 dry_missing_dir = NULL;
1288                 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1289                         /* Each parent dir must be in the file list or the flist data is bad.
1290                          * Optimization: most of the time the parent dir will be the last dir
1291                          * this function was asked to process in the file list. */
1292                         if (!inc_recurse
1293                          && (*dn != '.' || dn[1]) /* Avoid an issue with --relative and the "." dir. */
1294                          && (!prior_dir_file || strcmp(dn, f_name(prior_dir_file, NULL)) != 0)) {
1295                                 int ok = 0, j = flist_find_name(cur_flist, dn, -1);
1296                                 if (j >= 0) {
1297                                         struct file_struct *f = cur_flist->sorted[j];
1298                                         if (S_ISDIR(f->mode) || (missing_args == 2 && !file->mode && !f->mode))
1299                                                 ok = 1;
1300                                 }
1301                                 /* The --delete-missing-args option can actually put invalid entries into
1302                                  * the file list, so if that option was specified, we'll just complain about
1303                                  * it and allow it. */
1304                                 if (!ok && missing_args == 2 && file->mode == 0 && j < 0)
1305                                         rprintf(FERROR, "WARNING: parent dir is absent in the file list: %s\n", dn);
1306                                 else if (!ok) {
1307                                         rprintf(FERROR, "ABORTING due to invalid path from sender: %s/%s\n",
1308                                                 dn, file->basename);
1309                                         exit_cleanup(RERR_PROTOCOL);
1310                                 }
1311                         }
1312                         if (relative_paths && !implied_dirs && file->mode != 0
1313                          && do_stat(dn, &sx.st) < 0) {
1314                                 if (dry_run)
1315                                         goto parent_is_dry_missing;
1316                                 if (make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0) {
1317                                         rsyserr(FERROR_XFER, errno,
1318                                                 "recv_generator: mkdir %s failed",
1319                                                 full_fname(dn));
1320                                 }
1321                         }
1322                         if (fuzzy_basis) {
1323                                 int i;
1324                                 for (i = 0; i < fuzzy_basis; i++) {
1325                                         if (fuzzy_dirlist[i]) {
1326                                                 flist_free(fuzzy_dirlist[i]);
1327                                                 fuzzy_dirlist[i] = NULL;
1328                                         }
1329                                 }
1330                                 need_fuzzy_dirlist = 1;
1331                         }
1332 #ifdef SUPPORT_ACLS
1333                         if (!preserve_perms)
1334                                 dflt_perms = default_perms_for_dir(dn);
1335 #endif
1336                 }
1337                 parent_dirname = dn;
1338
1339                 statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1340                 stat_errno = errno;
1341         }
1342
1343         if (missing_args == 2 && file->mode == 0) {
1344                 if (filter_list.head && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
1345                         return;
1346                 if (statret == 0)
1347                         delete_item(fname, sx.st.st_mode, del_opts);
1348                 return;
1349         }
1350
1351         if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1352                 if (is_dir) {
1353                         if (is_dir < 0)
1354                                 return;
1355                         skip_dir = file;
1356                         file->flags |= FLAG_MISSING_DIR;
1357                 }
1358 #ifdef SUPPORT_HARD_LINKS
1359                 else if (F_IS_HLINKED(file))
1360                         handle_skipped_hlink(file, itemizing, code, f_out);
1361 #endif
1362                 if (INFO_GTE(SKIP, 1)) {
1363                         rprintf(FINFO, "not creating new %s \"%s\"\n",
1364                                 is_dir ? "directory" : "file", fname);
1365                 }
1366                 return;
1367         }
1368
1369         if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1370          && !am_root && sx.st.st_uid == our_uid)
1371                 del_opts |= DEL_NO_UID_WRITE;
1372
1373         if (statret == 0)
1374                 stype = get_file_type(sx.st.st_mode);
1375         else
1376                 stype = FT_UNSUPPORTED;
1377
1378         if (ignore_existing > 0 && statret == 0
1379          && (!is_dir || stype != FT_DIR)) {
1380                 if (INFO_GTE(SKIP, 1) && is_dir >= 0) {
1381                         const char *suf;
1382                         if (ftype != stype)
1383                                 suf = " (type differs)";
1384                         else if (ftype == FT_REG && always_checksum > 0 && !INFO_GTE(SKIP, 2))
1385                                 suf = ""; /* skip quick-check checksum unless SKIP2 was specified */
1386                         else if (quick_check_ok(ftype, fname, file, &sx.st))
1387                                 suf = " (uptodate)";
1388                         else
1389                                 suf = " (differs)";
1390                         rprintf(FINFO, "%s exists%s\n", fname, suf);
1391                 }
1392 #ifdef SUPPORT_HARD_LINKS
1393                 if (F_IS_HLINKED(file))
1394                         handle_skipped_hlink(file, itemizing, code, f_out);
1395 #endif
1396                 goto cleanup;
1397         }
1398
1399         fnamecmp = fname;
1400
1401         if (is_dir) {
1402                 mode_t added_perms;
1403                 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1404                         goto cleanup;
1405                 if (am_root < 0) {
1406                         /* For --fake-super, the dir must be useable by the copying
1407                          * user, just like it would be for root. */
1408                         added_perms = S_IRUSR|S_IWUSR|S_IXUSR;
1409                 } else
1410                         added_perms = 0;
1411                 if (is_dir < 0) {
1412                         if (!(preserve_times & PRESERVE_DIR_TIMES))
1413                                 goto cleanup;
1414                         /* In inc_recurse mode we want to make sure any missing
1415                          * directories get created while we're still processing
1416                          * the parent dir (which allows us to touch the parent
1417                          * dir's mtime right away).  We will handle the dir in
1418                          * full later (right before we handle its contents). */
1419                         if (statret == 0
1420                          && (stype == FT_DIR
1421                           || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1422                                 goto cleanup; /* Any errors get reported later. */
1423                         if (do_mkdir(fname, (file->mode|added_perms) & 0700) == 0)
1424                                 file->flags |= FLAG_DIR_CREATED;
1425                         goto cleanup;
1426                 }
1427                 /* The file to be received is a directory, so we need
1428                  * to prepare appropriately.  If there is already a
1429                  * file of that name and it is *not* a directory, then
1430                  * we need to delete it.  If it doesn't exist, then
1431                  * (perhaps recursively) create it. */
1432                 if (statret == 0 && stype != FT_DIR) {
1433                         if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1434                                 goto skipping_dir_contents;
1435                         statret = -1;
1436                 }
1437                 if (dry_run && statret != 0) {
1438                         if (!dry_missing_dir)
1439                                 dry_missing_dir = file;
1440                         file->flags |= FLAG_MISSING_DIR;
1441                 }
1442                 init_stat_x(&real_sx);
1443                 real_sx.st = sx.st;
1444                 real_ret = statret;
1445                 if (file->flags & FLAG_DIR_CREATED)
1446                         statret = -1;
1447                 if (!preserve_perms) { /* See comment in non-dir code below. */
1448                         file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms, statret == 0);
1449                 }
1450                 if (statret != 0 && basis_dir[0] != NULL) {
1451                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx, itemizing, code);
1452                         if (j == -2) {
1453                                 itemizing = 0;
1454                                 code = FNONE;
1455                                 statret = 1;
1456                         } else if (j >= 0) {
1457                                 statret = 1;
1458                                 fnamecmp = fnamecmpbuf;
1459                         }
1460                 }
1461                 if (itemizing && f_out != -1) {
1462                         itemize(fnamecmp, file, ndx, statret, &sx,
1463                                 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1464                 }
1465                 if (real_ret != 0 && do_mkdir(fname,file->mode|added_perms) < 0 && errno != EEXIST) {
1466                         if (!relative_paths || errno != ENOENT
1467                          || make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0
1468                          || (do_mkdir(fname, file->mode|added_perms) < 0 && errno != EEXIST)) {
1469                                 rsyserr(FERROR_XFER, errno,
1470                                         "recv_generator: mkdir %s failed",
1471                                         full_fname(fname));
1472                           skipping_dir_contents:
1473                                 rprintf(FERROR, "*** Skipping any contents from this failed directory ***\n");
1474                                 skip_dir = file;
1475                                 file->flags |= FLAG_MISSING_DIR;
1476                                 goto cleanup;
1477                         }
1478                 }
1479
1480 #ifdef SUPPORT_XATTRS
1481                 if (preserve_xattrs && statret == 1)
1482                         copy_xattrs(fnamecmpbuf, fname);
1483 #endif
1484                 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1485                  && INFO_GTE(NAME, 1) && code != FNONE && f_out != -1)
1486                         rprintf(code, "%s/\n", fname);
1487
1488                 /* We need to ensure that the dirs in the transfer have both
1489                  * readable and writable permissions during the time we are
1490                  * putting files within them.  This is then restored to the
1491                  * former permissions after the transfer is done. */
1492 #ifdef HAVE_CHMOD
1493                 if (!am_root && (file->mode & S_IRWXU) != S_IRWXU && dir_tweaking) {
1494                         mode_t mode = file->mode | S_IRWXU;
1495                         if (do_chmod(fname, mode) < 0) {
1496                                 rsyserr(FERROR_XFER, errno,
1497                                         "failed to modify permissions on %s",
1498                                         full_fname(fname));
1499                         }
1500                         need_retouch_dir_perms = 1;
1501                 }
1502 #endif
1503
1504                 if (real_ret != 0 && one_file_system)
1505                         real_sx.st.st_dev = filesystem_dev;
1506                 if (inc_recurse) {
1507                         if (one_file_system) {
1508                                 uint32 *devp = F_DIR_DEV_P(file);
1509                                 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1510                                 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1511                         }
1512                 }
1513                 else if (delete_during && f_out != -1 && !phase
1514                     && !(file->flags & FLAG_MISSING_DIR)) {
1515                         if (file->flags & FLAG_CONTENT_DIR)
1516                                 delete_in_dir(fname, file, &real_sx.st.st_dev);
1517                         else
1518                                 change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1519                 }
1520                 prior_dir_file = file;
1521                 goto cleanup;
1522         }
1523
1524         /* If we're not preserving permissions, change the file-list's
1525          * mode based on the local permissions and some heuristics. */
1526         if (!preserve_perms) {
1527                 int exists = statret == 0 && stype != FT_DIR;
1528                 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms, exists);
1529         }
1530
1531 #ifdef SUPPORT_HARD_LINKS
1532         if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1533          && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1534                 goto cleanup;
1535 #endif
1536
1537         if (preserve_links && ftype == FT_SYMLINK) {
1538 #ifdef SUPPORT_LINKS
1539                 const char *sl = F_SYMLINK(file);
1540                 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1541                         if (INFO_GTE(NAME, 1)) {
1542                                 if (solo_file) {
1543                                         /* fname contains the destination path, but we
1544                                          * want to report the source path. */
1545                                         fname = f_name(file, NULL);
1546                                 }
1547                                 rprintf(FINFO,
1548                                         "ignoring unsafe symlink \"%s\" -> \"%s\"\n",
1549                                         fname, sl);
1550                         }
1551                         goto cleanup;
1552                 }
1553                 if (statret == 0) {
1554                         if (stype == FT_SYMLINK && quick_check_ok(stype, fname, file, &sx.st)) {
1555                                 /* The link is pointing to the right place. */
1556                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1557                                 if (itemizing)
1558                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1559 #ifdef SUPPORT_HARD_LINKS
1560                                 if (preserve_hard_links && F_IS_HLINKED(file))
1561                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1562 #endif
1563                                 if (remove_source_files == 1)
1564                                         goto return_with_success;
1565                                 goto cleanup;
1566                         }
1567                 } else if (basis_dir[0] != NULL) {
1568                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx, itemizing, code);
1569                         if (j == -2) {
1570 #ifndef CAN_HARDLINK_SYMLINK
1571                                 if (alt_dest_type == LINK_DEST) {
1572                                         /* Resort to --copy-dest behavior. */
1573                                 } else
1574 #endif
1575                                 if (alt_dest_type != COPY_DEST)
1576                                         goto cleanup;
1577                                 itemizing = 0;
1578                                 code = FNONE;
1579                         } else if (j >= 0) {
1580                                 statret = 1;
1581                                 fnamecmp = fnamecmpbuf;
1582                         }
1583                 }
1584                 if (atomic_create(file, fname, sl, NULL, MAKEDEV(0, 0), &sx, statret == 0 ? DEL_FOR_SYMLINK : 0)) {
1585                         set_file_attrs(fname, file, NULL, NULL, 0);
1586                         if (itemizing) {
1587                                 if (statret == 0 && stype != FT_SYMLINK)
1588                                         statret = -1;
1589                                 itemize(fnamecmp, file, ndx, statret, &sx,
1590                                         ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1591                         }
1592                         if (code != FNONE && INFO_GTE(NAME, 1))
1593                                 rprintf(code, "%s -> %s\n", fname, sl);
1594 #ifdef SUPPORT_HARD_LINKS
1595                         if (preserve_hard_links && F_IS_HLINKED(file))
1596                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1597 #endif
1598                         /* This does not check remove_source_files == 1
1599                          * because this is one of the items that the old
1600                          * --remove-sent-files option would remove. */
1601                         if (remove_source_files)
1602                                 goto return_with_success;
1603                 }
1604 #endif
1605                 goto cleanup;
1606         }
1607
1608         if ((am_root && preserve_devices && ftype == FT_DEVICE)
1609          || (preserve_specials && ftype == FT_SPECIAL)) {
1610                 dev_t rdev;
1611                 int del_for_flag;
1612                 if (ftype == FT_DEVICE) {
1613                         uint32 *devp = F_RDEV_P(file);
1614                         rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1615                         del_for_flag = DEL_FOR_DEVICE;
1616                 } else {
1617                         rdev = 0;
1618                         del_for_flag = DEL_FOR_SPECIAL;
1619                 }
1620                 if (statret == 0) {
1621                         if (ftype != stype)
1622                                 statret = -1;
1623                         else if (quick_check_ok(ftype, fname, file, &sx.st)) {
1624                                 /* The device or special file is identical. */
1625                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1626                                 if (itemizing)
1627                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1628 #ifdef SUPPORT_HARD_LINKS
1629                                 if (preserve_hard_links && F_IS_HLINKED(file))
1630                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1631 #endif
1632                                 if (remove_source_files == 1)
1633                                         goto return_with_success;
1634                                 goto cleanup;
1635                         }
1636                 } else if (basis_dir[0] != NULL) {
1637                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx, itemizing, code);
1638                         if (j == -2) {
1639 #ifndef CAN_HARDLINK_SPECIAL
1640                                 if (alt_dest_type == LINK_DEST) {
1641                                         /* Resort to --copy-dest behavior. */
1642                                 } else
1643 #endif
1644                                 if (alt_dest_type != COPY_DEST)
1645                                         goto cleanup;
1646                                 itemizing = 0;
1647                                 code = FNONE;
1648                         } else if (j >= 0) {
1649                                 statret = 1;
1650                                 fnamecmp = fnamecmpbuf;
1651                         }
1652                 }
1653                 if (DEBUG_GTE(GENR, 1)) {
1654                         rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1655                                 fname, (int)file->mode,
1656                                 (long)major(rdev), (long)minor(rdev));
1657                 }
1658                 if (atomic_create(file, fname, NULL, NULL, rdev, &sx, del_for_flag)) {
1659                         set_file_attrs(fname, file, NULL, NULL, 0);
1660                         if (itemizing) {
1661                                 itemize(fnamecmp, file, ndx, statret, &sx,
1662                                         ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1663                         }
1664                         if (code != FNONE && INFO_GTE(NAME, 1))
1665                                 rprintf(code, "%s\n", fname);
1666 #ifdef SUPPORT_HARD_LINKS
1667                         if (preserve_hard_links && F_IS_HLINKED(file))
1668                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1669 #endif
1670                         if (remove_source_files == 1)
1671                                 goto return_with_success;
1672                 }
1673                 goto cleanup;
1674         }
1675
1676         if (ftype != FT_REG) {
1677                 if (solo_file)
1678                         fname = f_name(file, NULL);
1679                 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1680                 goto cleanup;
1681         }
1682
1683         if (max_size >= 0 && F_LENGTH(file) > max_size) {
1684                 if (INFO_GTE(SKIP, 1)) {
1685                         if (solo_file)
1686                                 fname = f_name(file, NULL);
1687                         rprintf(FINFO, "%s is over max-size\n", fname);
1688                 }
1689                 goto cleanup;
1690         }
1691         if (min_size >= 0 && F_LENGTH(file) < min_size) {
1692                 if (INFO_GTE(SKIP, 1)) {
1693                         if (solo_file)
1694                                 fname = f_name(file, NULL);
1695                         rprintf(FINFO, "%s is under min-size\n", fname);
1696                 }
1697                 goto cleanup;
1698         }
1699
1700         if (update_only > 0 && statret == 0 && file->modtime - sx.st.st_mtime < modify_window) {
1701                 if (INFO_GTE(SKIP, 1))
1702                         rprintf(FINFO, "%s is newer\n", fname);
1703 #ifdef SUPPORT_HARD_LINKS
1704                 if (F_IS_HLINKED(file))
1705                         handle_skipped_hlink(file, itemizing, code, f_out);
1706 #endif
1707                 goto cleanup;
1708         }
1709
1710         fnamecmp_type = FNAMECMP_FNAME;
1711
1712         if (statret == 0 && !(stype == FT_REG || (write_devices && stype == FT_DEVICE))) {
1713                 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1714                         goto cleanup;
1715                 statret = -1;
1716                 stat_errno = ENOENT;
1717         }
1718
1719         if (basis_dir[0] != NULL && (statret != 0 || alt_dest_type != COPY_DEST)) {
1720                 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx, statret == 0, itemizing, code);
1721                 if (j == -2) {
1722                         if (remove_source_files == 1)
1723                                 goto return_with_success;
1724                         goto cleanup;
1725                 }
1726                 if (j >= 0) {
1727                         fnamecmp = fnamecmpbuf;
1728                         fnamecmp_type = j;
1729                         statret = 0;
1730                 }
1731         }
1732
1733         init_stat_x(&real_sx);
1734         real_sx.st = sx.st; /* Don't copy xattr/acl pointers, as they would free wrong. */
1735         real_ret = statret;
1736
1737         if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1738          && link_stat(partialptr, &partial_st, 0) == 0
1739          && S_ISREG(partial_st.st_mode)) {
1740                 if (statret != 0)
1741                         goto prepare_to_open;
1742         } else
1743                 partialptr = NULL;
1744
1745         if (statret != 0 && fuzzy_basis) {
1746                 if (need_fuzzy_dirlist) {
1747                         const char *dn = file->dirname ? file->dirname : ".";
1748                         int i;
1749                         strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1750                         for (i = 0; i < fuzzy_basis; i++) {
1751                                 if (i && pathjoin(fnamecmpbuf, MAXPATHLEN, basis_dir[i-1], dn) >= MAXPATHLEN)
1752                                         continue;
1753                                 fuzzy_dirlist[i] = get_dirlist(fnamecmpbuf, -1, GDL_IGNORE_FILTER_RULES | GDL_PERHAPS_DIR);
1754                                 if (fuzzy_dirlist[i] && fuzzy_dirlist[i]->used == 0) {
1755                                         flist_free(fuzzy_dirlist[i]);
1756                                         fuzzy_dirlist[i] = NULL;
1757                                 }
1758                         }
1759                         need_fuzzy_dirlist = 0;
1760                 }
1761
1762                 /* Sets fnamecmp_type to FNAMECMP_FUZZY or above. */
1763                 fuzzy_file = find_fuzzy(file, fuzzy_dirlist, &fnamecmp_type);
1764                 if (fuzzy_file) {
1765                         f_name(fuzzy_file, fnamecmpbuf);
1766                         if (DEBUG_GTE(FUZZY, 1)) {
1767                                 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1768                                         fname, fnamecmpbuf);
1769                         }
1770                         sx.st.st_size = F_LENGTH(fuzzy_file);
1771                         statret = 0;
1772                         fnamecmp = fnamecmpbuf;
1773                 }
1774         }
1775
1776         if (statret != 0) {
1777 #ifdef SUPPORT_HARD_LINKS
1778                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1779                         cur_flist->in_progress++;
1780                         goto cleanup;
1781                 }
1782 #endif
1783                 if (stat_errno == ENOENT)
1784                         goto notify_others;
1785                 rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1786                         full_fname(fname));
1787                 goto cleanup;
1788         }
1789
1790         if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1791                 ;
1792         else if (fnamecmp_type >= FNAMECMP_FUZZY)
1793                 ;
1794         else if (quick_check_ok(FT_REG, fnamecmp, file, &sx.st)) {
1795                 if (partialptr) {
1796                         do_unlink(partialptr);
1797                         handle_partial_dir(partialptr, PDIR_DELETE);
1798                 }
1799                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT | maybe_ATTRS_ACCURATE_TIME);
1800                 if (itemizing)
1801                         itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1802 #ifdef SUPPORT_HARD_LINKS
1803                 if (preserve_hard_links && F_IS_HLINKED(file))
1804                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1805 #endif
1806                 if (remove_source_files != 1)
1807                         goto cleanup;
1808           return_with_success:
1809                 if (!dry_run)
1810                         send_msg_int(MSG_SUCCESS, ndx);
1811                 goto cleanup;
1812         }
1813
1814         if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1815 #ifdef SUPPORT_HARD_LINKS
1816                 if (F_IS_HLINKED(file))
1817                         handle_skipped_hlink(file, itemizing, code, f_out);
1818 #endif
1819                 goto cleanup;
1820         }
1821
1822   prepare_to_open:
1823         if (partialptr) {
1824                 sx.st = partial_st;
1825                 fnamecmp = partialptr;
1826                 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1827                 statret = 0;
1828         }
1829
1830         if (!do_xfers)
1831                 goto notify_others;
1832
1833         if (read_batch || whole_file) {
1834                 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1835                         if (!(backupptr = get_backup_name(fname)))
1836                                 goto cleanup;
1837                         if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1838                                 goto pretend_missing;
1839                         if (copy_file(fname, backupptr, -1, back_file->mode) < 0) {
1840                                 unmake_file(back_file);
1841                                 back_file = NULL;
1842                                 goto cleanup;
1843                         }
1844                 }
1845                 goto notify_others;
1846         }
1847
1848         if (fuzzy_dirlist[0]) {
1849                 int j = flist_find(fuzzy_dirlist[0], file);
1850                 if (j >= 0) /* don't use changing file as future fuzzy basis */
1851                         fuzzy_dirlist[0]->files[j]->flags |= FLAG_FILE_SENT;
1852         }
1853
1854         /* open the file */
1855         if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1856                 rsyserr(FERROR, errno, "failed to open %s, continuing",
1857                         full_fname(fnamecmp));
1858           pretend_missing:
1859                 /* pretend the file didn't exist */
1860 #ifdef SUPPORT_HARD_LINKS
1861                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1862                         cur_flist->in_progress++;
1863                         goto cleanup;
1864                 }
1865 #endif
1866                 statret = real_ret = -1;
1867                 goto notify_others;
1868         }
1869
1870         if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1871                 if (!(backupptr = get_backup_name(fname))) {
1872                         close(fd);
1873                         goto cleanup;
1874                 }
1875                 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1876                         close(fd);
1877                         goto pretend_missing;
1878                 }
1879                 if (robust_unlink(backupptr) && errno != ENOENT) {
1880                         rsyserr(FERROR_XFER, errno, "unlink %s",
1881                                 full_fname(backupptr));
1882                         unmake_file(back_file);
1883                         back_file = NULL;
1884                         close(fd);
1885                         goto cleanup;
1886                 }
1887                 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1888                         rsyserr(FERROR_XFER, errno, "open %s", full_fname(backupptr));
1889                         unmake_file(back_file);
1890                         back_file = NULL;
1891                         close(fd);
1892                         goto cleanup;
1893                 }
1894                 fnamecmp_type = FNAMECMP_BACKUP;
1895         }
1896
1897         if (DEBUG_GTE(DELTASUM, 3)) {
1898                 rprintf(FINFO, "gen mapped %s of size %s\n",
1899                         fnamecmp, big_num(sx.st.st_size));
1900         }
1901
1902         if (DEBUG_GTE(DELTASUM, 2))
1903                 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1904
1905   notify_others:
1906         if (remove_source_files && !delay_updates && !phase && !dry_run)
1907                 increment_active_files(ndx, itemizing, code);
1908         if (inc_recurse && (!dry_run || write_batch < 0))
1909                 cur_flist->in_progress++;
1910 #ifdef SUPPORT_HARD_LINKS
1911         if (preserve_hard_links && F_IS_HLINKED(file))
1912                 file->flags |= FLAG_FILE_SENT;
1913 #endif
1914         write_ndx(f_out, ndx);
1915         if (itemizing) {
1916                 int iflags = ITEM_TRANSFER;
1917                 if (always_checksum > 0)
1918                         iflags |= ITEM_REPORT_CHANGE;
1919                 if (fnamecmp_type != FNAMECMP_FNAME)
1920                         iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1921                 if (fnamecmp_type >= FNAMECMP_FUZZY)
1922                         iflags |= ITEM_XNAME_FOLLOWS;
1923                 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1924                         fuzzy_file ? fuzzy_file->basename : NULL);
1925                 free_stat_x(&real_sx);
1926         }
1927
1928         if (!do_xfers) {
1929 #ifdef SUPPORT_HARD_LINKS
1930                 if (preserve_hard_links && F_IS_HLINKED(file))
1931                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1932 #endif
1933                 goto cleanup;
1934         }
1935         if (read_batch)
1936                 goto cleanup;
1937
1938         if (statret != 0 || whole_file)
1939                 write_sum_head(f_out, NULL);
1940         else if (sx.st.st_size <= 0) {
1941                 write_sum_head(f_out, NULL);
1942                 close(fd);
1943         } else {
1944                 if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
1945                         rprintf(FWARNING,
1946                                 "WARNING: file is too large for checksum sending: %s\n",
1947                                 fnamecmp);
1948                         write_sum_head(f_out, NULL);
1949                 }
1950                 close(fd);
1951         }
1952
1953   cleanup:
1954         if (back_file) {
1955                 int save_preserve_xattrs = preserve_xattrs;
1956                 if (f_copy >= 0)
1957                         close(f_copy);
1958 #ifdef SUPPORT_XATTRS
1959                 if (preserve_xattrs) {
1960                         copy_xattrs(fname, backupptr);
1961                         preserve_xattrs = 0;
1962                 }
1963 #endif
1964                 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1965                 preserve_xattrs = save_preserve_xattrs;
1966                 if (INFO_GTE(BACKUP, 1)) {
1967                         rprintf(FINFO, "backed up %s to %s\n",
1968                                 fname, backupptr);
1969                 }
1970                 unmake_file(back_file);
1971         }
1972
1973         free_stat_x(&sx);
1974 }
1975
1976 /* If we are replacing an existing hard link, symlink, device, or special file,
1977  * create a temp-name item and rename it into place.  A symlimk specifies slnk,
1978  * a hard link specifies hlnk, otherwise we create a device based on rdev.
1979  * Specify 0 for the del_for_flag if there is not a file to replace.  This
1980  * returns 1 on success and 0 on failure. */
1981 int atomic_create(struct file_struct *file, char *fname, const char *slnk, const char *hlnk,
1982                   dev_t rdev, stat_x *sxp, int del_for_flag)
1983 {
1984         char tmpname[MAXPATHLEN];
1985         const char *create_name;
1986         int skip_atomic, dir_in_the_way = del_for_flag && S_ISDIR(sxp->st.st_mode);
1987
1988         if (!del_for_flag || dir_in_the_way || tmpdir || !get_tmpname(tmpname, fname, True))
1989                 skip_atomic = 1;
1990         else
1991                 skip_atomic = 0;
1992
1993         if (del_for_flag) {
1994                 if (make_backups > 0 && !dir_in_the_way) {
1995                         if (!make_backup(fname, skip_atomic))
1996                                 return 0;
1997                 } else if (skip_atomic) {
1998                         int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1999                         if (delete_item(fname, sxp->st.st_mode, del_opts | del_for_flag) != 0)
2000                                 return 0;
2001                 }
2002         }
2003
2004         create_name = skip_atomic ? fname : tmpname;
2005
2006         if (slnk) {
2007 #ifdef SUPPORT_LINKS
2008                 if (do_symlink(slnk, create_name) < 0) {
2009                         rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
2010                                 full_fname(create_name), slnk);
2011                         return 0;
2012                 }
2013 #else
2014                 return 0;
2015 #endif
2016         } else if (hlnk) {
2017 #ifdef SUPPORT_HARD_LINKS
2018                 if (!hard_link_one(file, create_name, hlnk, 0))
2019                         return 0;
2020 #else
2021                 return 0;
2022 #endif
2023         } else {
2024                 if (do_mknod(create_name, file->mode, rdev) < 0) {
2025                         rsyserr(FERROR_XFER, errno, "mknod %s failed",
2026                                 full_fname(create_name));
2027                         return 0;
2028                 }
2029         }
2030
2031         if (!skip_atomic) {
2032                 if (do_rename(tmpname, fname) < 0) {
2033                         rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\" failed",
2034                                 full_fname(tmpname), full_fname(fname));
2035                         do_unlink(tmpname);
2036                         return 0;
2037                 }
2038         }
2039
2040         return 1;
2041 }
2042
2043 #ifdef SUPPORT_HARD_LINKS
2044 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
2045                                  enum logcode code, int f_out)
2046 {
2047         char fbuf[MAXPATHLEN];
2048         int new_last_ndx;
2049         struct file_list *save_flist = cur_flist;
2050
2051         /* If we skip the last item in a chain of links and there was a
2052          * prior non-skipped hard-link waiting to finish, finish it now. */
2053         if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
2054                 return;
2055
2056         file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
2057         cur_flist->in_progress--; /* undo prior increment */
2058         f_name(file, fbuf);
2059         recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
2060
2061         cur_flist = save_flist;
2062 }
2063 #endif
2064
2065 static void touch_up_dirs(struct file_list *flist, int ndx)
2066 {
2067         static int counter = 0;
2068         struct file_struct *file;
2069         char *fname;
2070         BOOL fix_dir_perms;
2071         int i, start, end;
2072
2073         if (ndx < 0) {
2074                 start = 0;
2075                 end = flist->used - 1;
2076         } else
2077                 start = end = ndx;
2078
2079         /* Fix any directory permissions that were modified during the
2080          * transfer and/or re-set any tweaked modified-time values. */
2081         for (i = start; i <= end; i++, counter++) {
2082                 file = flist->files[i];
2083                 if (!F_IS_ACTIVE(file))
2084                         continue;
2085                 if (!S_ISDIR(file->mode)
2086                  || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
2087                         continue;
2088                 if (DEBUG_GTE(TIME, 2)) {
2089                         fname = f_name(file, NULL);
2090                         rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
2091                                 NS(fname), i);
2092                 }
2093                 /* Be sure not to retouch permissions with --fake-super. */
2094                 fix_dir_perms = !am_root && !(file->mode & S_IWUSR);
2095                 if (file->flags & FLAG_MISSING_DIR || !(need_retouch_dir_times || fix_dir_perms))
2096                         continue;
2097                 fname = f_name(file, NULL);
2098                 if (fix_dir_perms)
2099                         do_chmod(fname, file->mode);
2100                 if (need_retouch_dir_times) {
2101                         STRUCT_STAT st;
2102                         if (link_stat(fname, &st, 0) == 0 && mtime_differs(&st, file)) {
2103                                 st.st_mtime = file->modtime;
2104 #ifdef ST_MTIME_NSEC
2105                                 st.ST_MTIME_NSEC = F_MOD_NSEC_or_0(file);
2106 #endif
2107                                 set_times(fname, &st);
2108                         }
2109                 }
2110                 if (counter >= loopchk_limit) {
2111                         if (allowed_lull)
2112                                 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
2113                         else
2114                                 maybe_flush_socket(0);
2115                         counter = 0;
2116                 }
2117         }
2118 }
2119
2120 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
2121 {
2122         struct file_struct *file;
2123         struct file_list *flist;
2124         char fbuf[MAXPATHLEN];
2125         int ndx;
2126
2127         while (1) {
2128 #ifdef SUPPORT_HARD_LINKS
2129                 if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
2130                         int send_failed = (ndx == -2);
2131                         if (send_failed)
2132                                 ndx = get_hlink_num();
2133                         flist = flist_for_ndx(ndx, "check_for_finished_files.1");
2134                         file = flist->files[ndx - flist->ndx_start];
2135                         assert(file->flags & FLAG_HLINKED);
2136                         if (send_failed)
2137                                 handle_skipped_hlink(file, itemizing, code, sock_f_out);
2138                         else
2139                                 finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
2140                         flist->in_progress--;
2141                         continue;
2142                 }
2143 #endif
2144
2145                 if (check_redo && (ndx = get_redo_num()) != -1) {
2146                         OFF_T save_max_size = max_size;
2147                         OFF_T save_min_size = min_size;
2148                         csum_length = SUM_LENGTH;
2149                         max_size = -1;
2150                         min_size = -1;
2151                         ignore_existing = -ignore_existing;
2152                         ignore_non_existing = -ignore_non_existing;
2153                         update_only = -update_only;
2154                         always_checksum = -always_checksum;
2155                         size_only = -size_only;
2156                         append_mode = -append_mode;
2157                         make_backups = -make_backups; /* avoid dup backup w/inplace */
2158                         ignore_times++;
2159
2160                         flist = cur_flist;
2161                         cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
2162
2163                         file = cur_flist->files[ndx - cur_flist->ndx_start];
2164                         if (solo_file)
2165                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2166                         else
2167                                 f_name(file, fbuf);
2168                         recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
2169                         cur_flist->to_redo--;
2170
2171                         cur_flist = flist;
2172
2173                         csum_length = SHORT_SUM_LENGTH;
2174                         max_size = save_max_size;
2175                         min_size = save_min_size;
2176                         ignore_existing = -ignore_existing;
2177                         ignore_non_existing = -ignore_non_existing;
2178                         update_only = -update_only;
2179                         always_checksum = -always_checksum;
2180                         size_only = -size_only;
2181                         append_mode = -append_mode;
2182                         make_backups = -make_backups;
2183                         ignore_times--;
2184                         continue;
2185                 }
2186
2187                 if (cur_flist == first_flist)
2188                         break;
2189
2190                 /* We only get here if inc_recurse is enabled. */
2191                 if (first_flist->in_progress || first_flist->to_redo)
2192                         break;
2193
2194                 write_ndx(sock_f_out, NDX_DONE);
2195                 if (!read_batch && !flist_eof) {
2196                         int old_total = 0;
2197                         for (flist = first_flist; flist != cur_flist; flist = flist->next)
2198                                 old_total += flist->used;
2199                         maybe_flush_socket(!flist_eof && file_total - old_total < MIN_FILECNT_LOOKAHEAD/2);
2200                 }
2201
2202                 if (delete_during == 2 || !dir_tweaking) {
2203                         /* Skip directory touch-up. */
2204                 } else if (first_flist->parent_ndx >= 0)
2205                         touch_up_dirs(dir_flist, first_flist->parent_ndx);
2206
2207                 flist_free(first_flist); /* updates first_flist */
2208         }
2209 }
2210
2211 void generate_files(int f_out, const char *local_name)
2212 {
2213         int i, ndx, next_loopchk = 0;
2214         char fbuf[MAXPATHLEN];
2215         int itemizing;
2216         enum logcode code;
2217         int save_info_flist = info_levels[INFO_FLIST];
2218         int save_info_progress = info_levels[INFO_PROGRESS];
2219
2220         if (protocol_version >= 29) {
2221                 itemizing = 1;
2222                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2223                 code = logfile_format_has_i ? FNONE : FLOG;
2224         } else if (am_daemon) {
2225                 itemizing = logfile_format_has_i && do_xfers;
2226                 maybe_ATTRS_REPORT = ATTRS_REPORT;
2227                 code = itemizing || !do_xfers ? FCLIENT : FINFO;
2228         } else if (!am_server) {
2229                 itemizing = stdout_format_has_i;
2230                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2231                 code = itemizing ? FNONE : FINFO;
2232         } else {
2233                 itemizing = 0;
2234                 maybe_ATTRS_REPORT = ATTRS_REPORT;
2235                 code = FINFO;
2236         }
2237         solo_file = local_name;
2238         dir_tweaking = !(list_only || solo_file || dry_run);
2239         need_retouch_dir_times = preserve_times & PRESERVE_DIR_TIMES;
2240         loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2241         symlink_timeset_failed_flags = ITEM_REPORT_TIME
2242             | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2243         implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2244
2245         if (DEBUG_GTE(GENR, 1))
2246                 rprintf(FINFO, "generator starting pid=%d\n", (int)getpid());
2247
2248         if (delete_before && !solo_file && cur_flist->used > 0)
2249                 do_delete_pass();
2250         if (delete_during == 2) {
2251                 deldelay_size = BIGPATHBUFLEN * 4;
2252                 deldelay_buf = new_array(char, deldelay_size);
2253         }
2254         info_levels[INFO_FLIST] = info_levels[INFO_PROGRESS] = 0;
2255
2256         if (append_mode > 0 || whole_file < 0)
2257                 whole_file = 0;
2258         if (DEBUG_GTE(FLIST, 1)) {
2259                 rprintf(FINFO, "delta-transmission %s\n",
2260                         whole_file
2261                         ? "disabled for local transfer or --whole-file"
2262                         : "enabled");
2263         }
2264
2265         dflt_perms = (ACCESSPERMS & ~orig_umask);
2266
2267         do {
2268 #ifdef SUPPORT_HARD_LINKS
2269                 if (preserve_hard_links && inc_recurse) {
2270                         while (!flist_eof && file_total < MIN_FILECNT_LOOKAHEAD/2)
2271                                 wait_for_receiver();
2272                 }
2273 #endif
2274
2275                 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2276                         struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2277                         if (solo_file)
2278                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2279                         else
2280                                 f_name(fp, fbuf);
2281                         ndx = cur_flist->ndx_start - 1;
2282                         recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2283                         if (delete_during && dry_run < 2 && !list_only
2284                          && !(fp->flags & FLAG_MISSING_DIR)) {
2285                                 if (fp->flags & FLAG_CONTENT_DIR) {
2286                                         dev_t dirdev;
2287                                         if (one_file_system) {
2288                                                 uint32 *devp = F_DIR_DEV_P(fp);
2289                                                 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2290                                         } else
2291                                                 dirdev = MAKEDEV(0, 0);
2292                                         delete_in_dir(fbuf, fp, &dirdev);
2293                                 } else
2294                                         change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2295                         }
2296                 }
2297                 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2298                         struct file_struct *file = cur_flist->sorted[i];
2299
2300                         if (!F_IS_ACTIVE(file))
2301                                 continue;
2302
2303                         if (unsort_ndx)
2304                                 ndx = F_NDX(file);
2305                         else
2306                                 ndx = i + cur_flist->ndx_start;
2307
2308                         if (solo_file)
2309                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2310                         else
2311                                 f_name(file, fbuf);
2312                         recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2313
2314                         check_for_finished_files(itemizing, code, 0);
2315
2316                         if (i + cur_flist->ndx_start >= next_loopchk) {
2317                                 if (allowed_lull)
2318                                         maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
2319                                 else
2320                                         maybe_flush_socket(0);
2321                                 next_loopchk += loopchk_limit;
2322                         }
2323                 }
2324
2325                 if (!inc_recurse) {
2326                         write_ndx(f_out, NDX_DONE);
2327                         break;
2328                 }
2329
2330                 while (1) {
2331                         check_for_finished_files(itemizing, code, 1);
2332                         if (cur_flist->next || flist_eof)
2333                                 break;
2334                         wait_for_receiver();
2335                 }
2336         } while ((cur_flist = cur_flist->next) != NULL);
2337
2338         if (delete_during)
2339                 delete_in_dir(NULL, NULL, &dev_zero);
2340         phase++;
2341         if (DEBUG_GTE(GENR, 1))
2342                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2343
2344         while (1) {
2345                 check_for_finished_files(itemizing, code, 1);
2346                 if (msgdone_cnt)
2347                         break;
2348                 wait_for_receiver();
2349         }
2350
2351         phase++;
2352         if (DEBUG_GTE(GENR, 1))
2353                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2354
2355         write_ndx(f_out, NDX_DONE);
2356
2357         /* Reduce round-trip lag-time for a useless delay-updates phase. */
2358         if (protocol_version >= 29 && EARLY_DELAY_DONE_MSG())
2359                 write_ndx(f_out, NDX_DONE);
2360
2361         if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG()) {
2362                 if ((INFO_GTE(STATS, 2) && (delete_mode || force_delete)) || read_batch)
2363                         write_del_stats(f_out);
2364                 if (EARLY_DELAY_DONE_MSG()) /* Can't send this before delay */
2365                         write_ndx(f_out, NDX_DONE);
2366         }
2367
2368         /* Read MSG_DONE for the redo phase (and any prior messages). */
2369         while (1) {
2370                 check_for_finished_files(itemizing, code, 0);
2371                 if (msgdone_cnt > 1)
2372                         break;
2373                 wait_for_receiver();
2374         }
2375
2376         if (protocol_version >= 29) {
2377                 phase++;
2378                 if (DEBUG_GTE(GENR, 1))
2379                         rprintf(FINFO, "generate_files phase=%d\n", phase);
2380                 if (!EARLY_DELAY_DONE_MSG()) {
2381                         write_ndx(f_out, NDX_DONE);
2382                         if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG())
2383                                 write_ndx(f_out, NDX_DONE);
2384                 }
2385                 /* Read MSG_DONE for delay-updates phase & prior messages. */
2386                 while (msgdone_cnt == 2)
2387                         wait_for_receiver();
2388         }
2389
2390         info_levels[INFO_FLIST] = save_info_flist;
2391         info_levels[INFO_PROGRESS] = save_info_progress;
2392
2393         if (delete_during == 2)
2394                 do_delayed_deletions(fbuf);
2395         if (delete_after && !solo_file && file_total > 0)
2396                 do_delete_pass();
2397
2398         if (max_delete >= 0 && skipped_deletes) {
2399                 rprintf(FWARNING,
2400                         "Deletions stopped due to --max-delete limit (%d skipped)\n",
2401                         skipped_deletes);
2402                 io_error |= IOERR_DEL_LIMIT;
2403         }
2404
2405         if (protocol_version >= 31) {
2406                 if (!EARLY_DELETE_DONE_MSG()) {
2407                         if (INFO_GTE(STATS, 2) || read_batch)
2408                                 write_del_stats(f_out);
2409                         write_ndx(f_out, NDX_DONE);
2410                 }
2411
2412                 /* Read MSG_DONE for late-delete phase & prior messages. */
2413                 while (msgdone_cnt == 3)
2414                         wait_for_receiver();
2415         }
2416
2417         if ((need_retouch_dir_perms || need_retouch_dir_times)
2418          && dir_tweaking && (!inc_recurse || delete_during == 2))
2419                 touch_up_dirs(dir_flist, -1);
2420
2421         if (DEBUG_GTE(GENR, 1))
2422                 rprintf(FINFO, "generate_files finished\n");
2423 }