rsync.c

   1 /*
   2  * Routines common to more than one of the rsync processes.
   3  *
   4  * Copyright (C) 1996 Andrew Tridgell
   5  * Copyright (C) 1996 Paul Mackerras
   6  * Copyright (C) 2003-2008 Wayne Davison
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 3 of the License, or
  11  * (at your option) any later version.
  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, visit the http://fsf.org website.
  20  */
  21
  22 #include "rsync.h"
  23 #include "ifuncs.h"
  24 #if defined HAVE_LIBCHARSET_H && defined HAVE_LOCALE_CHARSET
  25 #include <libcharset.h>
  26 #elif defined HAVE_LANGINFO_H && defined HAVE_NL_LANGINFO
  27 #include <langinfo.h>
  28 #endif
  29
  30 extern int verbose;
  31 extern int dry_run;
  32 extern int preserve_acls;
  33 extern int preserve_xattrs;
  34 extern int preserve_perms;
  35 extern int preserve_executability;
  36 extern int preserve_times;
  37 extern int am_root;
  38 extern int am_server;
  39 extern int am_sender;
  40 extern int am_generator;
  41 extern int am_starting_up;
  42 extern int allow_8bit_chars;
  43 extern int protocol_version;
  44 extern int uid_ndx;
  45 extern int gid_ndx;
  46 extern int inc_recurse;
  47 extern int inplace;
  48 extern int flist_eof;
  49 extern int keep_dirlinks;
  50 extern int make_backups;
  51 extern struct file_list *cur_flist, *first_flist, *dir_flist;
  52 extern struct chmod_mode_struct *daemon_chmod_modes;
  53 #ifdef ICONV_OPTION
  54 extern char *iconv_opt;
  55 #endif
  56
  57 #ifdef ICONV_CONST
  58 iconv_t ic_chck = (iconv_t)-1;
  59 # ifdef ICONV_OPTION
  60 iconv_t ic_send = (iconv_t)-1, ic_recv = (iconv_t)-1;
  61 # endif
  62
  63 static const char *default_charset(void)
  64 {
  65 # if defined HAVE_LIBCHARSET_H && defined HAVE_LOCALE_CHARSET
  66         return locale_charset();
  67 # elif defined HAVE_LANGINFO_H && defined HAVE_NL_LANGINFO
  68         return nl_langinfo(CODESET);
  69 # else
  70         return ""; /* Works with (at the very least) gnu iconv... */
  71 # endif
  72 }
  73
  74 void setup_iconv(void)
  75 {
  76         const char *defset = default_charset();
  77 # ifdef ICONV_OPTION
  78         const char *charset;
  79         char *cp;
  80 # endif
  81
  82         if (!am_server && !allow_8bit_chars) {
  83
  84                 /* It's OK if this fails... */
  85                 ic_chck = iconv_open(defset, defset);
  86
  87                 if (verbose > 3) {
  88                         if (ic_chck == (iconv_t)-1) {
  89                                 rprintf(FINFO,
  90                                         "note: iconv_open(\"%s\", \"%s\") failed (%d)"
  91                                         " -- using isprint() instead of iconv().\n",
  92                                         defset, defset, errno);
  93                         } else {
  94                                 rprintf(FINFO,
  95                                         "note: iconv_open(\"%s\", \"%s\") succeeded.\n",
  96                                         defset, defset);
  97                         }
  98                 }
  99         }
 100
 101 # ifdef ICONV_OPTION
 102         if (!iconv_opt)
 103                 return;
 104
 105         if ((cp = strchr(iconv_opt, ',')) != NULL) {
 106                 if (am_server) /* A local transfer needs this. */
 107                         iconv_opt = cp + 1;
 108                 else
 109                         *cp = '\0';
 110         }
 111
 112         if (!*iconv_opt || (*iconv_opt == '.' && iconv_opt[1] == '\0'))
 113                 charset = defset;
 114         else
 115                 charset = iconv_opt;
 116
 117         if ((ic_send = iconv_open(UTF8_CHARSET, charset)) == (iconv_t)-1) {
 118                 rprintf(FERROR, "iconv_open(\"%s\", \"%s\") failed\n",
 119                         UTF8_CHARSET, charset);
 120                 exit_cleanup(RERR_UNSUPPORTED);
 121         }
 122
 123         if ((ic_recv = iconv_open(charset, UTF8_CHARSET)) == (iconv_t)-1) {
 124                 rprintf(FERROR, "iconv_open(\"%s\", \"%s\") failed\n",
 125                         charset, UTF8_CHARSET);
 126                 exit_cleanup(RERR_UNSUPPORTED);
 127         }
 128
 129         if (verbose > 1) {
 130                 rprintf(FINFO, "%s charset: %s\n",
 131                         am_server ? "server" : "client",
 132                         *charset ? charset : "[LOCALE]");
 133         }
 134 # endif
 135 }
 136
 137 /* This function converts the characters in the "in" xbuf into characters
 138  * in the "out" xbuf.  The "len" of the "in" xbuf is used starting from its
 139  * "pos".  The "size" of the "out" xbuf restricts how many characters can be
 140  * stored, starting at its "pos+len" position.  Note that the last byte of
 141  * the buffer is never used, which reserves space for a terminating '\0'.
 142  * We return a 0 on success or a -1 on error.  An error also sets errno to
 143  * E2BIG, EILSEQ, or EINVAL (see below); otherwise errno will be set to 0.
 144  * The "in" xbuf is altered to update "pos" and "len".  The "out" xbuf has
 145  * data appended, and its "len" incremented.   If ICB_EXPAND_OUT is set in
 146  * "flags", the "out" xbuf will also be allocated if empty, and expanded if
 147  * too small (so E2BIG will not be returned).  If ICB_INCLUDE_BAD is set in
 148  * "flags", any badly-encoded chars are included verbatim in the "out" xbuf,
 149  * so EILSEQ will not be returned.  Likewise for ICB_INCLUDE_INCOMPLETE with
 150  * respect to an incomplete multi-byte char at the end, which ensures that
 151  * EINVAL is not returned.  Anytime "in.pos" is 0 we will reset the iconv()
 152  * state prior to processing the characters. */
 153 int iconvbufs(iconv_t ic, xbuf *in, xbuf *out, int flags)
 154 {
 155         ICONV_CONST char *ibuf;
 156         size_t icnt, ocnt;
 157         char *obuf;
 158
 159         if (!out->size && flags & ICB_EXPAND_OUT)
 160                 alloc_xbuf(out, 1024);
 161
 162         if (!in->pos)
 163                 iconv(ic, NULL, 0, NULL, 0);
 164
 165         ibuf = in->buf + in->pos;
 166         icnt = in->len;
 167
 168         obuf = out->buf + (out->pos + out->len);
 169         ocnt = out->size - (out->pos + out->len) - 1;
 170
 171         while (icnt) {
 172                 while (iconv(ic, &ibuf, &icnt, &obuf, &ocnt) == (size_t)-1) {
 173                         if (errno == EINTR)
 174                                 continue;
 175                         if (errno == EINVAL) {
 176                                 if (!(flags & ICB_INCLUDE_INCOMPLETE))
 177                                         goto finish;
 178                         } else if (errno == EILSEQ) {
 179                                 if (!(flags & ICB_INCLUDE_BAD))
 180                                         goto finish;
 181                         } else {
 182                                 size_t opos = obuf - out->buf;
 183                                 if (!(flags & ICB_EXPAND_OUT)) {
 184                                         errno = E2BIG;
 185                                         goto finish;
 186                                 }
 187                                 realloc_xbuf(out, out->size + 1024);
 188                                 obuf = out->buf + opos;
 189                                 ocnt += 1024;
 190                                 continue;
 191                         }
 192                         *obuf++ = *ibuf++;
 193                         ocnt--, icnt--;
 194                 }
 195         }
 196
 197         errno = 0;
 198
 199   finish:
 200         in->len = icnt;
 201         in->pos = ibuf - in->buf;
 202         out->len = obuf - out->buf - out->pos;
 203
 204         return errno ? -1 : 0;
 205 }
 206 #endif
 207
 208 void send_protected_args(int fd, char *args[])
 209 {
 210 #ifdef ICONV_OPTION
 211         int i, convert = ic_send != (iconv_t)-1;
 212         xbuf outbuf, inbuf;
 213
 214         if (convert)
 215                 alloc_xbuf(&outbuf, 1024);
 216 #endif
 217
 218         for (i = 0; args[i]; i++) {} /* find first NULL */
 219         args[i] = "rsync"; /* set a new arg0 */
 220         if (verbose > 1)
 221                 print_child_argv("protected args:", args + i + 1);
 222         do {
 223 #ifdef ICONV_OPTION
 224                 if (convert) {
 225                         INIT_XBUF_STRLEN(inbuf, args[i]);
 226                         iconvbufs(ic_send, &inbuf, &outbuf,
 227                                   ICB_EXPAND_OUT | ICB_INCLUDE_BAD | ICB_INCLUDE_INCOMPLETE);
 228                         outbuf.buf[outbuf.len] = '\0';
 229                         write_buf(fd, outbuf.buf, outbuf.len + 1);
 230                         outbuf.len = 0;
 231                 } else
 232 #endif
 233                         write_buf(fd, args[i], strlen(args[i]) + 1);
 234         } while (args[++i]);
 235         write_byte(fd, 0);
 236
 237 #ifdef ICONV_OPTION
 238         if (convert)
 239                 free(outbuf.buf);
 240 #endif
 241 }
 242
 243 int read_ndx_and_attrs(int f_in, int *iflag_ptr, uchar *type_ptr,
 244                        char *buf, int *len_ptr)
 245 {
 246         int len, iflags = 0;
 247         struct file_list *flist;
 248         uchar fnamecmp_type = FNAMECMP_FNAME;
 249         int ndx, save_verbose = verbose;
 250
 251   read_loop:
 252         while (1) {
 253                 ndx = read_ndx(f_in);
 254
 255                 if (ndx >= 0)
 256                         break;
 257                 if (ndx == NDX_DONE)
 258                         return ndx;
 259                 if (!inc_recurse || am_sender)
 260                         goto invalid_ndx;
 261                 if (ndx == NDX_FLIST_EOF) {
 262                         flist_eof = 1;
 263                         send_msg(MSG_FLIST_EOF, "", 0, 0);
 264                         continue;
 265                 }
 266                 ndx = NDX_FLIST_OFFSET - ndx;
 267                 if (ndx < 0 || ndx >= dir_flist->used) {
 268                         ndx = NDX_FLIST_OFFSET - ndx;
 269                         rprintf(FERROR,
 270                                 "[%s] Invalid dir index: %d (%d - %d)\n",
 271                                 who_am_i(), ndx, NDX_FLIST_OFFSET,
 272                                 NDX_FLIST_OFFSET - dir_flist->used + 1);
 273                         exit_cleanup(RERR_PROTOCOL);
 274                 }
 275
 276                 /* Send everything read from f_in to msg_fd_out. */
 277                 if (verbose > 3) {
 278                         rprintf(FINFO, "[%s] receiving flist for dir %d\n",
 279                                 who_am_i(), ndx);
 280                 }
 281                 verbose = 0;
 282                 send_msg_int(MSG_FLIST, ndx);
 283                 start_flist_forward(f_in);
 284                 flist = recv_file_list(f_in);
 285                 flist->parent_ndx = ndx;
 286                 stop_flist_forward();
 287                 verbose = save_verbose;
 288         }
 289
 290         iflags = protocol_version >= 29 ? read_shortint(f_in)
 291                    : ITEM_TRANSFER | ITEM_MISSING_DATA;
 292
 293         /* Honor the old-style keep-alive indicator. */
 294         if (protocol_version < 30
 295          && ndx == cur_flist->used && iflags == ITEM_IS_NEW) {
 296                 if (am_sender)
 297                         maybe_send_keepalive();
 298                 goto read_loop;
 299         }
 300
 301         if (!(flist = flist_for_ndx(ndx))) {
 302                 int start, used;
 303           invalid_ndx:
 304                 start = first_flist ? first_flist->ndx_start : 0;
 305                 used = first_flist ? first_flist->used : 0;
 306                 rprintf(FERROR,
 307                         "Invalid file index: %d (%d - %d) with iflags %x [%s]\n",
 308                         ndx, start - 1, start + used -1, iflags, who_am_i());
 309                 exit_cleanup(RERR_PROTOCOL);
 310         }
 311         cur_flist = flist;
 312
 313         if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
 314                 fnamecmp_type = read_byte(f_in);
 315         *type_ptr = fnamecmp_type;
 316
 317         if (iflags & ITEM_XNAME_FOLLOWS) {
 318                 if ((len = read_vstring(f_in, buf, MAXPATHLEN)) < 0)
 319                         exit_cleanup(RERR_PROTOCOL);
 320         } else {
 321                 *buf = '\0';
 322                 len = -1;
 323         }
 324         *len_ptr = len;
 325
 326         if (iflags & ITEM_TRANSFER) {
 327                 int i = ndx - cur_flist->ndx_start;
 328                 if (i < 0 || !S_ISREG(cur_flist->files[i]->mode)) {
 329                         rprintf(FERROR,
 330                                 "received request to transfer non-regular file: %d [%s]\n",
 331                                 ndx, who_am_i());
 332                         exit_cleanup(RERR_PROTOCOL);
 333                 }
 334         }
 335
 336         *iflag_ptr = iflags;
 337         return ndx;
 338 }
 339
 340 /*
 341   free a sums struct
 342   */
 343 void free_sums(struct sum_struct *s)
 344 {
 345         if (s->sums) free(s->sums);
 346         free(s);
 347 }
 348
 349 /* This is only called when we aren't preserving permissions.  Figure out what
 350  * the permissions should be and return them merged back into the mode. */
 351 mode_t dest_mode(mode_t flist_mode, mode_t stat_mode, int dflt_perms,
 352                  int exists)
 353 {
 354         int new_mode;
 355         /* If the file already exists, we'll return the local permissions,
 356          * possibly tweaked by the --executability option. */
 357         if (exists) {
 358                 new_mode = (flist_mode & ~CHMOD_BITS) | (stat_mode & CHMOD_BITS);
 359                 if (preserve_executability && S_ISREG(flist_mode)) {
 360                         /* If the source file is executable, grant execute
 361                          * rights to everyone who can read, but ONLY if the
 362                          * file isn't already executable. */
 363                         if (!(flist_mode & 0111))
 364                                 new_mode &= ~0111;
 365                         else if (!(stat_mode & 0111))
 366                                 new_mode |= (new_mode & 0444) >> 2;
 367                 }
 368         } else {
 369                 /* Apply destination default permissions and turn
 370                  * off special permissions. */
 371                 new_mode = flist_mode & (~CHMOD_BITS | dflt_perms);
 372         }
 373         return new_mode;
 374 }
 375
 376 int set_file_attrs(const char *fname, struct file_struct *file, stat_x *sxp,
 377                    const char *fnamecmp, int flags)
 378 {
 379         int updated = 0;
 380         stat_x sx2;
 381         int change_uid, change_gid;
 382         mode_t new_mode = file->mode;
 383         int inherit;
 384
 385         if (!sxp) {
 386                 if (dry_run)
 387                         return 1;
 388                 if (link_stat(fname, &sx2.st, 0) < 0) {
 389                         rsyserr(FERROR_XFER, errno, "stat %s failed",
 390                                 full_fname(fname));
 391                         return 0;
 392                 }
 393 #ifdef SUPPORT_ACLS
 394                 sx2.acc_acl = sx2.def_acl = NULL;
 395 #endif
 396 #ifdef SUPPORT_XATTRS
 397                 sx2.xattr = NULL;
 398 #endif
 399                 sxp = &sx2;
 400                 inherit = !preserve_perms;
 401         } else
 402                 inherit = !preserve_perms && file->flags & FLAG_DIR_CREATED;
 403
 404         if (inherit && S_ISDIR(new_mode) && sxp->st.st_mode & S_ISGID) {
 405                 /* We just created this directory and its setgid
 406                  * bit is on, so make sure it stays on. */
 407                 new_mode |= S_ISGID;
 408         }
 409
 410         if (daemon_chmod_modes && !S_ISLNK(new_mode))
 411                 new_mode = tweak_mode(new_mode, daemon_chmod_modes);
 412
 413 #ifdef SUPPORT_ACLS
 414         if (preserve_acls && !S_ISLNK(file->mode) && !ACL_READY(*sxp))
 415                 get_acl(fname, sxp);
 416 #endif
 417
 418 #ifdef SUPPORT_XATTRS
 419         if (am_root < 0)
 420                 set_stat_xattr(fname, file, new_mode);
 421         if (preserve_xattrs && fnamecmp)
 422                 set_xattr(fname, file, fnamecmp, sxp);
 423 #endif
 424
 425         if (!preserve_times || (S_ISDIR(sxp->st.st_mode) && preserve_times == 1))
 426                 flags |= ATTRS_SKIP_MTIME;
 427         if (!(flags & ATTRS_SKIP_MTIME)
 428             && cmp_time(sxp->st.st_mtime, file->modtime) != 0) {
 429                 int ret = set_modtime(fname, file->modtime, sxp->st.st_mode);
 430                 if (ret < 0) {
 431                         rsyserr(FERROR_XFER, errno, "failed to set times on %s",
 432                                 full_fname(fname));
 433                         goto cleanup;
 434                 }
 435                 if (ret == 0) /* ret == 1 if symlink could not be set */
 436                         updated = 1;
 437                 else
 438                         file->flags |= FLAG_TIME_FAILED;
 439         }
 440
 441         change_uid = am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file);
 442         change_gid = gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
 443                   && sxp->st.st_gid != (gid_t)F_GROUP(file);
 444 #if !defined HAVE_LCHOWN && !defined CHOWN_MODIFIES_SYMLINK
 445         if (S_ISLNK(sxp->st.st_mode)) {
 446                 ;
 447         } else
 448 #endif
 449         if (change_uid || change_gid) {
 450                 if (verbose > 2) {
 451                         if (change_uid) {
 452                                 rprintf(FINFO,
 453                                         "set uid of %s from %u to %u\n",
 454                                         fname, (unsigned)sxp->st.st_uid, F_OWNER(file));
 455                         }
 456                         if (change_gid) {
 457                                 rprintf(FINFO,
 458                                         "set gid of %s from %u to %u\n",
 459                                         fname, (unsigned)sxp->st.st_gid, F_GROUP(file));
 460                         }
 461                 }
 462                 if (am_root >= 0) {
 463                         if (do_lchown(fname,
 464                             change_uid ? (uid_t)F_OWNER(file) : sxp->st.st_uid,
 465                             change_gid ? (gid_t)F_GROUP(file) : sxp->st.st_gid) != 0) {
 466                                 /* We shouldn't have attempted to change uid
 467                                  * or gid unless have the privilege. */
 468                                 rsyserr(FERROR_XFER, errno, "%s %s failed",
 469                                     change_uid ? "chown" : "chgrp",
 470                                     full_fname(fname));
 471                                 goto cleanup;
 472                         }
 473                         /* A lchown had been done, so we need to re-stat if
 474                          * the destination had the setuid or setgid bits set
 475                          * (due to the side effect of the chown call). */
 476                         if (sxp->st.st_mode & (S_ISUID | S_ISGID)) {
 477                                 link_stat(fname, &sxp->st,
 478                                           keep_dirlinks && S_ISDIR(sxp->st.st_mode));
 479                         }
 480                 }
 481                 updated = 1;
 482         }
 483
 484 #ifdef SUPPORT_ACLS
 485         /* It's OK to call set_acl() now, even for a dir, as the generator
 486          * will enable owner-writability using chmod, if necessary.
 487          *
 488          * If set_acl() changes permission bits in the process of setting
 489          * an access ACL, it changes sxp->st.st_mode so we know whether we
 490          * need to chmod(). */
 491         if (preserve_acls && !S_ISLNK(new_mode) && set_acl(fname, file, sxp) == 0)
 492                 updated = 1;
 493 #endif
 494
 495 #ifdef HAVE_CHMOD
 496         if (!BITS_EQUAL(sxp->st.st_mode, new_mode, CHMOD_BITS)) {
 497                 int ret = am_root < 0 ? 0 : do_chmod(fname, new_mode);
 498                 if (ret < 0) {
 499                         rsyserr(FERROR_XFER, errno,
 500                                 "failed to set permissions on %s",
 501                                 full_fname(fname));
 502                         goto cleanup;
 503                 }
 504                 if (ret == 0) /* ret == 1 if symlink could not be set */
 505                         updated = 1;
 506         }
 507 #endif
 508
 509         if (verbose > 1 && flags & ATTRS_REPORT) {
 510                 if (updated)
 511                         rprintf(FCLIENT, "%s\n", fname);
 512                 else
 513                         rprintf(FCLIENT, "%s is uptodate\n", fname);
 514         }
 515   cleanup:
 516         if (sxp == &sx2) {
 517 #ifdef SUPPORT_ACLS
 518                 if (preserve_acls)
 519                         free_acl(&sx2);
 520 #endif
 521 #ifdef SUPPORT_XATTRS
 522                 if (preserve_xattrs)
 523                         free_xattr(&sx2);
 524 #endif
 525         }
 526         return updated;
 527 }
 528
 529 RETSIGTYPE sig_int(UNUSED(int val))
 530 {
 531         /* KLUGE: if the user hits Ctrl-C while ssh is prompting
 532          * for a password, then our cleanup's sending of a SIGUSR1
 533          * signal to all our children may kill ssh before it has a
 534          * chance to restore the tty settings (i.e. turn echo back
 535          * on).  By sleeping for a short time, ssh gets a bigger
 536          * chance to do the right thing.  If child processes are
 537          * not ssh waiting for a password, then this tiny delay
 538          * shouldn't hurt anything. */
 539         msleep(400);
 540         exit_cleanup(RERR_SIGNAL);
 541 }
 542
 543 /* Finish off a file transfer: renaming the file and setting the file's
 544  * attributes (e.g. permissions, ownership, etc.).  If the robust_rename()
 545  * call is forced to copy the temp file and partialptr is both non-NULL and
 546  * not an absolute path, we stage the file into the partial-dir and then
 547  * rename it into place.  This returns 1 on succcess or 0 on failure. */
 548 int finish_transfer(const char *fname, const char *fnametmp,
 549                     const char *fnamecmp, const char *partialptr,
 550                     struct file_struct *file, int ok_to_set_time,
 551                     int overwriting_basis)
 552 {
 553         int ret;
 554         const char *temp_copy_name = partialptr && *partialptr != '/' ? partialptr : NULL;
 555
 556         if (inplace) {
 557                 if (verbose > 2)
 558                         rprintf(FINFO, "finishing %s\n", fname);
 559                 fnametmp = fname;
 560                 goto do_set_file_attrs;
 561         }
 562
 563         if (make_backups > 0 && overwriting_basis && !make_backup(fname))
 564                 return 1;
 565
 566         /* Change permissions before putting the file into place. */
 567         set_file_attrs(fnametmp, file, NULL, fnamecmp,
 568                        ok_to_set_time ? 0 : ATTRS_SKIP_MTIME);
 569
 570         /* move tmp file over real file */
 571         if (verbose > 2)
 572                 rprintf(FINFO, "renaming %s to %s\n", fnametmp, fname);
 573         ret = robust_rename(fnametmp, fname, temp_copy_name,
 574                             file->mode & INITACCESSPERMS);
 575         if (ret < 0) {
 576                 rsyserr(FERROR_XFER, errno, "%s %s -> \"%s\"",
 577                         ret == -2 ? "copy" : "rename",
 578                         full_fname(fnametmp), fname);
 579                 if (!partialptr || (ret == -2 && temp_copy_name)
 580                  || robust_rename(fnametmp, partialptr, NULL,
 581                                   file->mode & INITACCESSPERMS) < 0)
 582                         do_unlink(fnametmp);
 583                 return 0;
 584         }
 585         if (ret == 0) {
 586                 /* The file was moved into place (not copied), so it's done. */
 587                 return 1;
 588         }
 589         /* The file was copied, so tweak the perms of the copied file.  If it
 590          * was copied to partialptr, move it into its final destination. */
 591         fnametmp = temp_copy_name ? temp_copy_name : fname;
 592
 593   do_set_file_attrs:
 594         set_file_attrs(fnametmp, file, NULL, fnamecmp,
 595                        ok_to_set_time ? 0 : ATTRS_SKIP_MTIME);
 596
 597         if (temp_copy_name) {
 598                 if (do_rename(fnametmp, fname) < 0) {
 599                         rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\"",
 600                                 full_fname(fnametmp), fname);
 601                         return 0;
 602                 }
 603                 handle_partial_dir(temp_copy_name, PDIR_DELETE);
 604         }
 605         return 1;
 606 }
 607
 608 struct file_list *flist_for_ndx(int ndx)
 609 {
 610         struct file_list *flist = cur_flist;
 611
 612         if (!flist && !(flist = first_flist))
 613                 return NULL;
 614
 615         while (ndx < flist->ndx_start-1) {
 616                 if (flist == first_flist)
 617                         return NULL;
 618                 flist = flist->prev;
 619         }
 620         while (ndx >= flist->ndx_start + flist->used) {
 621                 if (!(flist = flist->next))
 622                         return NULL;
 623         }
 624         return flist;
 625 }
 626
 627 const char *who_am_i(void)
 628 {
 629         if (am_starting_up)
 630                 return am_server ? "server" : "client";
 631         return am_sender ? "sender" : am_generator ? "generator" : "receiver";
 632 }