| 1 | /* -*- c-file-style: "linux" -*- |
| 2 | |
| 3 | Copyright (C) 1996-2000 by Andrew Tridgell |
| 4 | Copyright (C) Paul Mackerras 1996 |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 19 | */ |
| 20 | |
| 21 | #include "rsync.h" |
| 22 | |
| 23 | extern int verbose; |
| 24 | extern int do_xfers; |
| 25 | extern int am_daemon; |
| 26 | extern int am_server; |
| 27 | extern int do_progress; |
| 28 | extern int log_before_transfer; |
| 29 | extern int log_format_has_i; |
| 30 | extern int daemon_log_format_has_i; |
| 31 | extern int csum_length; |
| 32 | extern int read_batch; |
| 33 | extern int write_batch; |
| 34 | extern int batch_gen_fd; |
| 35 | extern int protocol_version; |
| 36 | extern int relative_paths; |
| 37 | extern int keep_dirlinks; |
| 38 | extern int preserve_hard_links; |
| 39 | extern int preserve_perms; |
| 40 | extern int io_error; |
| 41 | extern int basis_dir_cnt; |
| 42 | extern int make_backups; |
| 43 | extern int cleanup_got_literal; |
| 44 | extern int remove_sent_files; |
| 45 | extern int module_id; |
| 46 | extern int ignore_errors; |
| 47 | extern int orig_umask; |
| 48 | extern int append_mode; |
| 49 | extern int sparse_files; |
| 50 | extern int keep_partial; |
| 51 | extern int checksum_seed; |
| 52 | extern int inplace; |
| 53 | extern int delay_updates; |
| 54 | extern struct stats stats; |
| 55 | extern char *log_format; |
| 56 | extern char *tmpdir; |
| 57 | extern char *partial_dir; |
| 58 | extern char *basis_dir[]; |
| 59 | extern struct file_list *the_file_list; |
| 60 | extern struct filter_list_struct server_filter_list; |
| 61 | |
| 62 | static struct bitbag *delayed_bits = NULL; |
| 63 | static int phase = 0; |
| 64 | |
| 65 | |
| 66 | /* |
| 67 | * get_tmpname() - create a tmp filename for a given filename |
| 68 | * |
| 69 | * If a tmpdir is defined, use that as the directory to |
| 70 | * put it in. Otherwise, the tmp filename is in the same |
| 71 | * directory as the given name. Note that there may be no |
| 72 | * directory at all in the given name! |
| 73 | * |
| 74 | * The tmp filename is basically the given filename with a |
| 75 | * dot prepended, and .XXXXXX appended (for mkstemp() to |
| 76 | * put its unique gunk in). Take care to not exceed |
| 77 | * either the MAXPATHLEN or NAME_MAX, esp. the last, as |
| 78 | * the basename basically becomes 8 chars longer. In that |
| 79 | * case, the original name is shortened sufficiently to |
| 80 | * make it all fit. |
| 81 | * |
| 82 | * Of course, there's no real reason for the tmp name to |
| 83 | * look like the original, except to satisfy us humans. |
| 84 | * As long as it's unique, rsync will work. |
| 85 | */ |
| 86 | |
| 87 | static int get_tmpname(char *fnametmp, char *fname) |
| 88 | { |
| 89 | char *f; |
| 90 | int length = 0; |
| 91 | int maxname; |
| 92 | |
| 93 | if (tmpdir) { |
| 94 | /* Note: this can't overflow, so the return value is safe */ |
| 95 | length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2); |
| 96 | fnametmp[length++] = '/'; |
| 97 | fnametmp[length] = '\0'; /* always NULL terminated */ |
| 98 | } |
| 99 | |
| 100 | if ((f = strrchr(fname, '/')) != NULL) { |
| 101 | ++f; |
| 102 | if (!tmpdir) { |
| 103 | length = f - fname; |
| 104 | /* copy up to and including the slash */ |
| 105 | strlcpy(fnametmp, fname, length + 1); |
| 106 | } |
| 107 | } else |
| 108 | f = fname; |
| 109 | fnametmp[length++] = '.'; |
| 110 | fnametmp[length] = '\0'; /* always NULL terminated */ |
| 111 | |
| 112 | maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8); |
| 113 | |
| 114 | if (maxname < 1) { |
| 115 | rprintf(FERROR, "temporary filename too long: %s\n", fname); |
| 116 | fnametmp[0] = '\0'; |
| 117 | return 0; |
| 118 | } |
| 119 | |
| 120 | strlcpy(fnametmp + length, f, maxname); |
| 121 | strcat(fnametmp + length, ".XXXXXX"); |
| 122 | |
| 123 | return 1; |
| 124 | } |
| 125 | |
| 126 | |
| 127 | static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r, |
| 128 | char *fname, int fd, OFF_T total_size) |
| 129 | { |
| 130 | static char file_sum1[MD4_SUM_LENGTH]; |
| 131 | static char file_sum2[MD4_SUM_LENGTH]; |
| 132 | struct map_struct *mapbuf; |
| 133 | struct sum_struct sum; |
| 134 | int32 len; |
| 135 | OFF_T offset = 0; |
| 136 | OFF_T offset2; |
| 137 | char *data; |
| 138 | int32 i; |
| 139 | char *map = NULL; |
| 140 | |
| 141 | read_sum_head(f_in, &sum); |
| 142 | |
| 143 | if (fd_r >= 0 && size_r > 0) { |
| 144 | int32 read_size = MAX(sum.blength * 2, 16*1024); |
| 145 | mapbuf = map_file(fd_r, size_r, read_size, sum.blength); |
| 146 | if (verbose > 2) { |
| 147 | rprintf(FINFO, "recv mapped %s of size %.0f\n", |
| 148 | fname_r, (double)size_r); |
| 149 | } |
| 150 | } else |
| 151 | mapbuf = NULL; |
| 152 | |
| 153 | sum_init(checksum_seed); |
| 154 | |
| 155 | if (append_mode) { |
| 156 | OFF_T j; |
| 157 | sum.flength = (OFF_T)sum.count * sum.blength; |
| 158 | if (sum.remainder) |
| 159 | sum.flength -= sum.blength - sum.remainder; |
| 160 | for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) { |
| 161 | if (do_progress) |
| 162 | show_progress(offset, total_size); |
| 163 | sum_update(map_ptr(mapbuf, offset, CHUNK_SIZE), |
| 164 | CHUNK_SIZE); |
| 165 | offset = j; |
| 166 | } |
| 167 | if (offset < sum.flength) { |
| 168 | int32 len = sum.flength - offset; |
| 169 | if (do_progress) |
| 170 | show_progress(offset, total_size); |
| 171 | sum_update(map_ptr(mapbuf, offset, len), len); |
| 172 | offset = sum.flength; |
| 173 | } |
| 174 | if (fd != -1 && do_lseek(fd, offset, SEEK_SET) != offset) { |
| 175 | rsyserr(FERROR, errno, "lseek failed on %s", |
| 176 | full_fname(fname)); |
| 177 | exit_cleanup(RERR_FILEIO); |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | while ((i = recv_token(f_in, &data)) != 0) { |
| 182 | if (do_progress) |
| 183 | show_progress(offset, total_size); |
| 184 | |
| 185 | if (i > 0) { |
| 186 | if (verbose > 3) { |
| 187 | rprintf(FINFO,"data recv %d at %.0f\n", |
| 188 | i,(double)offset); |
| 189 | } |
| 190 | |
| 191 | stats.literal_data += i; |
| 192 | cleanup_got_literal = 1; |
| 193 | |
| 194 | sum_update(data, i); |
| 195 | |
| 196 | if (fd != -1 && write_file(fd,data,i) != i) |
| 197 | goto report_write_error; |
| 198 | offset += i; |
| 199 | continue; |
| 200 | } |
| 201 | |
| 202 | i = -(i+1); |
| 203 | offset2 = i * (OFF_T)sum.blength; |
| 204 | len = sum.blength; |
| 205 | if (i == (int)sum.count-1 && sum.remainder != 0) |
| 206 | len = sum.remainder; |
| 207 | |
| 208 | stats.matched_data += len; |
| 209 | |
| 210 | if (verbose > 3) { |
| 211 | rprintf(FINFO, |
| 212 | "chunk[%d] of size %ld at %.0f offset=%.0f\n", |
| 213 | i, (long)len, (double)offset2, (double)offset); |
| 214 | } |
| 215 | |
| 216 | if (mapbuf) { |
| 217 | map = map_ptr(mapbuf,offset2,len); |
| 218 | |
| 219 | see_token(map, len); |
| 220 | sum_update(map, len); |
| 221 | } |
| 222 | |
| 223 | if (inplace) { |
| 224 | if (offset == offset2 && fd != -1) { |
| 225 | if (flush_write_file(fd) < 0) |
| 226 | goto report_write_error; |
| 227 | offset += len; |
| 228 | if (do_lseek(fd, len, SEEK_CUR) != offset) { |
| 229 | rsyserr(FERROR, errno, |
| 230 | "lseek failed on %s", |
| 231 | full_fname(fname)); |
| 232 | exit_cleanup(RERR_FILEIO); |
| 233 | } |
| 234 | continue; |
| 235 | } |
| 236 | } |
| 237 | if (fd != -1 && map && write_file(fd, map, len) != (int)len) |
| 238 | goto report_write_error; |
| 239 | offset += len; |
| 240 | } |
| 241 | |
| 242 | if (flush_write_file(fd) < 0) |
| 243 | goto report_write_error; |
| 244 | |
| 245 | #ifdef HAVE_FTRUNCATE |
| 246 | if (inplace && fd != -1) |
| 247 | ftruncate(fd, offset); |
| 248 | #endif |
| 249 | |
| 250 | if (do_progress) |
| 251 | end_progress(total_size); |
| 252 | |
| 253 | if (fd != -1 && offset > 0 && sparse_end(fd) != 0) { |
| 254 | report_write_error: |
| 255 | rsyserr(FERROR, errno, "write failed on %s", |
| 256 | full_fname(fname)); |
| 257 | exit_cleanup(RERR_FILEIO); |
| 258 | } |
| 259 | |
| 260 | sum_end(file_sum1); |
| 261 | |
| 262 | if (mapbuf) |
| 263 | unmap_file(mapbuf); |
| 264 | |
| 265 | read_buf(f_in,file_sum2,MD4_SUM_LENGTH); |
| 266 | if (verbose > 2) |
| 267 | rprintf(FINFO,"got file_sum\n"); |
| 268 | if (fd != -1 && memcmp(file_sum1, file_sum2, MD4_SUM_LENGTH) != 0) |
| 269 | return 0; |
| 270 | return 1; |
| 271 | } |
| 272 | |
| 273 | |
| 274 | static void discard_receive_data(int f_in, OFF_T length) |
| 275 | { |
| 276 | receive_data(f_in, NULL, -1, 0, NULL, -1, length); |
| 277 | } |
| 278 | |
| 279 | static void handle_delayed_updates(struct file_list *flist, char *local_name) |
| 280 | { |
| 281 | char *fname, *partialptr, numbuf[4]; |
| 282 | int i; |
| 283 | |
| 284 | for (i = -1; (i = bitbag_next_bit(delayed_bits, i)) >= 0; ) { |
| 285 | struct file_struct *file = flist->files[i]; |
| 286 | fname = local_name ? local_name : f_name(file, NULL); |
| 287 | if ((partialptr = partial_dir_fname(fname)) != NULL) { |
| 288 | if (make_backups && !make_backup(fname)) |
| 289 | continue; |
| 290 | if (verbose > 2) { |
| 291 | rprintf(FINFO, "renaming %s to %s\n", |
| 292 | partialptr, fname); |
| 293 | } |
| 294 | /* We don't use robust_rename() here because the |
| 295 | * partial-dir must be on the same drive. */ |
| 296 | if (do_rename(partialptr, fname) < 0) { |
| 297 | rsyserr(FERROR, errno, |
| 298 | "rename failed for %s (from %s)", |
| 299 | full_fname(fname), partialptr); |
| 300 | } else { |
| 301 | if (remove_sent_files |
| 302 | || (preserve_hard_links |
| 303 | && file->link_u.links)) { |
| 304 | SIVAL(numbuf, 0, i); |
| 305 | send_msg(MSG_SUCCESS,numbuf,4); |
| 306 | } |
| 307 | handle_partial_dir(partialptr, PDIR_DELETE); |
| 308 | } |
| 309 | } |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | static int get_next_gen_i(int batch_gen_fd, int next_gen_i, int desired_i) |
| 314 | { |
| 315 | while (next_gen_i < desired_i) { |
| 316 | if (next_gen_i >= 0) { |
| 317 | rprintf(FINFO, |
| 318 | "(No batched update for%s \"%s\")\n", |
| 319 | phase ? " resend of" : "", |
| 320 | f_name(the_file_list->files[next_gen_i], NULL)); |
| 321 | } |
| 322 | next_gen_i = read_int(batch_gen_fd); |
| 323 | if (next_gen_i == -1) |
| 324 | next_gen_i = the_file_list->count; |
| 325 | } |
| 326 | return next_gen_i; |
| 327 | } |
| 328 | |
| 329 | |
| 330 | /** |
| 331 | * main routine for receiver process. |
| 332 | * |
| 333 | * Receiver process runs on the same host as the generator process. */ |
| 334 | int recv_files(int f_in, struct file_list *flist, char *local_name) |
| 335 | { |
| 336 | int next_gen_i = -1; |
| 337 | int fd1,fd2; |
| 338 | STRUCT_STAT st; |
| 339 | int iflags, xlen; |
| 340 | char *fname, fbuf[MAXPATHLEN]; |
| 341 | char xname[MAXPATHLEN]; |
| 342 | char fnametmp[MAXPATHLEN]; |
| 343 | char *fnamecmp, *partialptr, numbuf[4]; |
| 344 | char fnamecmpbuf[MAXPATHLEN]; |
| 345 | uchar fnamecmp_type; |
| 346 | struct file_struct *file; |
| 347 | struct stats initial_stats; |
| 348 | int save_make_backups = make_backups; |
| 349 | int itemizing = am_daemon ? daemon_log_format_has_i |
| 350 | : !am_server && log_format_has_i; |
| 351 | int max_phase = protocol_version >= 29 ? 2 : 1; |
| 352 | int i, recv_ok; |
| 353 | |
| 354 | if (verbose > 2) |
| 355 | rprintf(FINFO,"recv_files(%d) starting\n",flist->count); |
| 356 | |
| 357 | if (flist->hlink_pool) { |
| 358 | pool_destroy(flist->hlink_pool); |
| 359 | flist->hlink_pool = NULL; |
| 360 | } |
| 361 | |
| 362 | if (delay_updates) |
| 363 | delayed_bits = bitbag_create(flist->count); |
| 364 | |
| 365 | while (1) { |
| 366 | cleanup_disable(); |
| 367 | |
| 368 | i = read_int(f_in); |
| 369 | if (i == -1) { |
| 370 | if (read_batch) { |
| 371 | get_next_gen_i(batch_gen_fd, next_gen_i, |
| 372 | flist->count); |
| 373 | next_gen_i = -1; |
| 374 | } |
| 375 | if (++phase > max_phase) |
| 376 | break; |
| 377 | csum_length = SUM_LENGTH; |
| 378 | if (verbose > 2) |
| 379 | rprintf(FINFO, "recv_files phase=%d\n", phase); |
| 380 | if (phase == 2 && delay_updates) |
| 381 | handle_delayed_updates(flist, local_name); |
| 382 | send_msg(MSG_DONE, "", 0); |
| 383 | if (keep_partial && !partial_dir) |
| 384 | make_backups = 0; /* prevents double backup */ |
| 385 | if (append_mode) { |
| 386 | append_mode = 0; |
| 387 | sparse_files = 0; |
| 388 | } |
| 389 | continue; |
| 390 | } |
| 391 | |
| 392 | iflags = read_item_attrs(f_in, -1, i, &fnamecmp_type, |
| 393 | xname, &xlen); |
| 394 | if (iflags == ITEM_IS_NEW) /* no-op packet */ |
| 395 | continue; |
| 396 | |
| 397 | file = flist->files[i]; |
| 398 | fname = local_name ? local_name : f_name(file, fbuf); |
| 399 | |
| 400 | if (verbose > 2) |
| 401 | rprintf(FINFO, "recv_files(%s)\n", fname); |
| 402 | |
| 403 | if (!(iflags & ITEM_TRANSFER)) { |
| 404 | maybe_log_item(file, iflags, itemizing, xname); |
| 405 | continue; |
| 406 | } |
| 407 | if (phase == 2) { |
| 408 | rprintf(FERROR, |
| 409 | "got transfer request in phase 2 [%s]\n", |
| 410 | who_am_i()); |
| 411 | exit_cleanup(RERR_PROTOCOL); |
| 412 | } |
| 413 | |
| 414 | stats.current_file_index = i; |
| 415 | stats.num_transferred_files++; |
| 416 | stats.total_transferred_size += file->length; |
| 417 | cleanup_got_literal = 0; |
| 418 | |
| 419 | if (server_filter_list.head |
| 420 | && check_filter(&server_filter_list, fname, 0) < 0) { |
| 421 | rprintf(FERROR, "attempt to hack rsync failed.\n"); |
| 422 | exit_cleanup(RERR_PROTOCOL); |
| 423 | } |
| 424 | |
| 425 | if (!do_xfers) { /* log the transfer */ |
| 426 | if (!am_server && log_format) |
| 427 | log_item(file, &stats, iflags, NULL); |
| 428 | if (read_batch) |
| 429 | discard_receive_data(f_in, file->length); |
| 430 | continue; |
| 431 | } |
| 432 | if (write_batch < 0) { |
| 433 | log_item(file, &stats, iflags, NULL); |
| 434 | if (!am_server) |
| 435 | discard_receive_data(f_in, file->length); |
| 436 | continue; |
| 437 | } |
| 438 | |
| 439 | if (read_batch) { |
| 440 | next_gen_i = get_next_gen_i(batch_gen_fd, next_gen_i, i); |
| 441 | if (i < next_gen_i) { |
| 442 | rprintf(FINFO, |
| 443 | "(Skipping batched update for \"%s\")\n", |
| 444 | fname); |
| 445 | discard_receive_data(f_in, file->length); |
| 446 | continue; |
| 447 | } |
| 448 | next_gen_i = -1; |
| 449 | } |
| 450 | |
| 451 | partialptr = partial_dir ? partial_dir_fname(fname) : fname; |
| 452 | |
| 453 | if (protocol_version >= 29) { |
| 454 | switch (fnamecmp_type) { |
| 455 | case FNAMECMP_FNAME: |
| 456 | fnamecmp = fname; |
| 457 | break; |
| 458 | case FNAMECMP_PARTIAL_DIR: |
| 459 | fnamecmp = partialptr; |
| 460 | break; |
| 461 | case FNAMECMP_BACKUP: |
| 462 | fnamecmp = get_backup_name(fname); |
| 463 | break; |
| 464 | case FNAMECMP_FUZZY: |
| 465 | if (file->dirname) { |
| 466 | pathjoin(fnamecmpbuf, MAXPATHLEN, |
| 467 | file->dirname, xname); |
| 468 | fnamecmp = fnamecmpbuf; |
| 469 | } else |
| 470 | fnamecmp = xname; |
| 471 | break; |
| 472 | default: |
| 473 | if (fnamecmp_type >= basis_dir_cnt) { |
| 474 | rprintf(FERROR, |
| 475 | "invalid basis_dir index: %d.\n", |
| 476 | fnamecmp_type); |
| 477 | exit_cleanup(RERR_PROTOCOL); |
| 478 | } |
| 479 | pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, |
| 480 | basis_dir[fnamecmp_type], fname); |
| 481 | fnamecmp = fnamecmpbuf; |
| 482 | break; |
| 483 | } |
| 484 | if (!fnamecmp || (server_filter_list.head |
| 485 | && check_filter(&server_filter_list, fname, 0) < 0)) |
| 486 | fnamecmp = fname; |
| 487 | } else { |
| 488 | /* Reminder: --inplace && --partial-dir are never |
| 489 | * enabled at the same time. */ |
| 490 | if (inplace && make_backups) { |
| 491 | if (!(fnamecmp = get_backup_name(fname))) |
| 492 | fnamecmp = fname; |
| 493 | } else if (partial_dir && partialptr) |
| 494 | fnamecmp = partialptr; |
| 495 | else |
| 496 | fnamecmp = fname; |
| 497 | } |
| 498 | |
| 499 | initial_stats = stats; |
| 500 | |
| 501 | /* open the file */ |
| 502 | fd1 = do_open(fnamecmp, O_RDONLY, 0); |
| 503 | |
| 504 | if (fd1 == -1 && protocol_version < 29) { |
| 505 | if (fnamecmp != fname) { |
| 506 | fnamecmp = fname; |
| 507 | fd1 = do_open(fnamecmp, O_RDONLY, 0); |
| 508 | } |
| 509 | |
| 510 | if (fd1 == -1 && basis_dir[0]) { |
| 511 | /* pre-29 allowed only one alternate basis */ |
| 512 | pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, |
| 513 | basis_dir[0], fname); |
| 514 | fnamecmp = fnamecmpbuf; |
| 515 | fd1 = do_open(fnamecmp, O_RDONLY, 0); |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | if (fd1 != -1 && do_fstat(fd1,&st) != 0) { |
| 520 | rsyserr(FERROR, errno, "fstat %s failed", |
| 521 | full_fname(fnamecmp)); |
| 522 | discard_receive_data(f_in, file->length); |
| 523 | close(fd1); |
| 524 | continue; |
| 525 | } |
| 526 | |
| 527 | if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) { |
| 528 | /* this special handling for directories |
| 529 | * wouldn't be necessary if robust_rename() |
| 530 | * and the underlying robust_unlink could cope |
| 531 | * with directories |
| 532 | */ |
| 533 | rprintf(FERROR,"recv_files: %s is a directory\n", |
| 534 | full_fname(fnamecmp)); |
| 535 | discard_receive_data(f_in, file->length); |
| 536 | close(fd1); |
| 537 | continue; |
| 538 | } |
| 539 | |
| 540 | if (fd1 != -1 && !S_ISREG(st.st_mode)) { |
| 541 | close(fd1); |
| 542 | fd1 = -1; |
| 543 | } |
| 544 | |
| 545 | /* If we're not preserving permissions, change the file-list's |
| 546 | * mode based on the local permissions and some heuristics. */ |
| 547 | if (!preserve_perms) { |
| 548 | int exists = fd1 != -1; |
| 549 | file->mode = dest_mode(file->mode, st.st_mode, exists); |
| 550 | } |
| 551 | |
| 552 | /* We now check to see if we are writing file "inplace" */ |
| 553 | if (inplace) { |
| 554 | fd2 = do_open(fname, O_WRONLY|O_CREAT, 0600); |
| 555 | if (fd2 == -1) { |
| 556 | rsyserr(FERROR, errno, "open %s failed", |
| 557 | full_fname(fname)); |
| 558 | discard_receive_data(f_in, file->length); |
| 559 | if (fd1 != -1) |
| 560 | close(fd1); |
| 561 | continue; |
| 562 | } |
| 563 | } else { |
| 564 | if (!get_tmpname(fnametmp,fname)) { |
| 565 | discard_receive_data(f_in, file->length); |
| 566 | if (fd1 != -1) |
| 567 | close(fd1); |
| 568 | continue; |
| 569 | } |
| 570 | |
| 571 | /* we initially set the perms without the |
| 572 | * setuid/setgid bits to ensure that there is no race |
| 573 | * condition. They are then correctly updated after |
| 574 | * the lchown. Thanks to snabb@epipe.fi for pointing |
| 575 | * this out. We also set it initially without group |
| 576 | * access because of a similar race condition. */ |
| 577 | fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS); |
| 578 | |
| 579 | /* in most cases parent directories will already exist |
| 580 | * because their information should have been previously |
| 581 | * transferred, but that may not be the case with -R */ |
| 582 | if (fd2 == -1 && relative_paths && errno == ENOENT |
| 583 | && create_directory_path(fnametmp, orig_umask) == 0) { |
| 584 | /* Get back to name with XXXXXX in it. */ |
| 585 | get_tmpname(fnametmp, fname); |
| 586 | fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS); |
| 587 | } |
| 588 | if (fd2 == -1) { |
| 589 | rsyserr(FERROR, errno, "mkstemp %s failed", |
| 590 | full_fname(fnametmp)); |
| 591 | discard_receive_data(f_in, file->length); |
| 592 | if (fd1 != -1) |
| 593 | close(fd1); |
| 594 | continue; |
| 595 | } |
| 596 | |
| 597 | if (keep_partial) |
| 598 | cleanup_set(fnametmp, partialptr, file, fd1, fd2); |
| 599 | } |
| 600 | |
| 601 | /* log the transfer */ |
| 602 | if (log_before_transfer) |
| 603 | log_item(file, &initial_stats, iflags, NULL); |
| 604 | else if (!am_server && verbose && do_progress) |
| 605 | rprintf(FINFO, "%s\n", fname); |
| 606 | |
| 607 | /* recv file data */ |
| 608 | recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size, |
| 609 | fname, fd2, file->length); |
| 610 | |
| 611 | if (!log_before_transfer) |
| 612 | log_item(file, &initial_stats, iflags, NULL); |
| 613 | |
| 614 | if (fd1 != -1) |
| 615 | close(fd1); |
| 616 | if (close(fd2) < 0) { |
| 617 | rsyserr(FERROR, errno, "close failed on %s", |
| 618 | full_fname(fnametmp)); |
| 619 | exit_cleanup(RERR_FILEIO); |
| 620 | } |
| 621 | |
| 622 | if ((recv_ok && (!delay_updates || !partialptr)) || inplace) { |
| 623 | if (partialptr == fname || *partial_dir == '/') |
| 624 | partialptr = NULL; |
| 625 | finish_transfer(fname, fnametmp, partialptr, |
| 626 | file, recv_ok, 1); |
| 627 | if (fnamecmp == partialptr) { |
| 628 | do_unlink(partialptr); |
| 629 | handle_partial_dir(partialptr, PDIR_DELETE); |
| 630 | } |
| 631 | } else if (keep_partial && partialptr |
| 632 | && handle_partial_dir(partialptr, PDIR_CREATE)) { |
| 633 | finish_transfer(partialptr, fnametmp, NULL, |
| 634 | file, recv_ok, !partial_dir); |
| 635 | if (delay_updates && recv_ok) { |
| 636 | bitbag_set_bit(delayed_bits, i); |
| 637 | recv_ok = -1; |
| 638 | } |
| 639 | } else { |
| 640 | partialptr = NULL; |
| 641 | do_unlink(fnametmp); |
| 642 | } |
| 643 | |
| 644 | cleanup_disable(); |
| 645 | |
| 646 | if (recv_ok > 0) { |
| 647 | if (remove_sent_files |
| 648 | || (preserve_hard_links && file->link_u.links)) { |
| 649 | SIVAL(numbuf, 0, i); |
| 650 | send_msg(MSG_SUCCESS, numbuf, 4); |
| 651 | } |
| 652 | } else if (!recv_ok) { |
| 653 | int msgtype = phase || read_batch ? FERROR : FINFO; |
| 654 | if (msgtype == FERROR || verbose) { |
| 655 | char *errstr, *redostr, *keptstr; |
| 656 | if (!(keep_partial && partialptr) && !inplace) |
| 657 | keptstr = "discarded"; |
| 658 | else if (partial_dir) |
| 659 | keptstr = "put into partial-dir"; |
| 660 | else |
| 661 | keptstr = "retained"; |
| 662 | if (msgtype == FERROR) { |
| 663 | errstr = "ERROR"; |
| 664 | redostr = ""; |
| 665 | } else { |
| 666 | errstr = "WARNING"; |
| 667 | redostr = " (will try again)"; |
| 668 | } |
| 669 | rprintf(msgtype, |
| 670 | "%s: %s failed verification -- update %s%s.\n", |
| 671 | errstr, fname, keptstr, redostr); |
| 672 | } |
| 673 | if (!phase) { |
| 674 | SIVAL(numbuf, 0, i); |
| 675 | send_msg(MSG_REDO, numbuf, 4); |
| 676 | } |
| 677 | } |
| 678 | } |
| 679 | make_backups = save_make_backups; |
| 680 | |
| 681 | if (phase == 2 && delay_updates) /* for protocol_version < 29 */ |
| 682 | handle_delayed_updates(flist, local_name); |
| 683 | |
| 684 | if (verbose > 2) |
| 685 | rprintf(FINFO,"recv_files finished\n"); |
| 686 | |
| 687 | return 0; |
| 688 | } |