flist.c

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