Commit | Line | Data |
---|---|---|
ef1aa910 | 1 | /* -*- c-file-style: "linux" -*- |
91262d5d MP |
2 | |
3 | rsync -- fast file replication program | |
2cda2560 WD |
4 | |
5 | Copyright (C) 1996-2000 by Andrew Tridgell | |
2f03f956 | 6 | Copyright (C) Paul Mackerras 1996 |
91262d5d | 7 | Copyright (C) 2002 by Martin Pool <mbp@samba.org> |
2cda2560 | 8 | |
2f03f956 AT |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
2cda2560 | 13 | |
2f03f956 AT |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
2cda2560 | 18 | |
2f03f956 AT |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
22 | */ | |
23 | ||
24 | #include "rsync.h" | |
25 | ||
26 | extern int verbose; | |
27 | extern int dry_run; | |
28 | extern int relative_paths; | |
716e73d4 | 29 | extern int keep_dirlinks; |
2f03f956 AT |
30 | extern int preserve_links; |
31 | extern int am_root; | |
32 | extern int preserve_devices; | |
33 | extern int preserve_hard_links; | |
6744b62d WD |
34 | extern int preserve_perms; |
35 | extern int preserve_uid; | |
36 | extern int preserve_gid; | |
3ea9bbd6 WD |
37 | extern int preserve_times; |
38 | extern int omit_dir_times; | |
fa13f396 | 39 | extern int delete_during; |
2f03f956 | 40 | extern int update_only; |
3d6feada | 41 | extern int opt_ignore_existing; |
cd6aa5b5 WD |
42 | extern int inplace; |
43 | extern int make_backups; | |
2f03f956 AT |
44 | extern int csum_length; |
45 | extern int ignore_times; | |
f83f0548 | 46 | extern int size_only; |
7d1bfaf7 | 47 | extern OFF_T max_size; |
2f03f956 | 48 | extern int io_timeout; |
d04e9c51 | 49 | extern int protocol_version; |
2f03f956 | 50 | extern int always_checksum; |
a7260c40 | 51 | extern char *partial_dir; |
b7e8628c | 52 | extern char *basis_dir[]; |
2be2fb3e | 53 | extern int compare_dest; |
59c95e42 | 54 | extern int link_dest; |
5774786f WD |
55 | extern int whole_file; |
56 | extern int local_server; | |
5774786f | 57 | extern int list_only; |
b9f592fb | 58 | extern int read_batch; |
5774786f WD |
59 | extern int only_existing; |
60 | extern int orig_umask; | |
61 | extern int safe_symlinks; | |
a255c592 | 62 | extern long block_size; /* "long" because popt can't set an int32. */ |
2f03f956 | 63 | |
7842418b | 64 | extern struct filter_list_struct server_filter_list; |
97f9dcae | 65 | |
b7e8628c | 66 | static int unchanged_attrs(struct file_struct *file, STRUCT_STAT *st) |
2f03f956 | 67 | { |
b7e8628c WD |
68 | if (preserve_perms |
69 | && (st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) | |
84acca07 | 70 | return 0; |
bb24028f | 71 | |
b7e8628c WD |
72 | if (am_root && preserve_uid && st->st_uid != file->uid) |
73 | return 0; | |
bb24028f | 74 | |
b7e8628c WD |
75 | if (preserve_gid && file->gid != GID_NONE && st->st_gid != file->gid) |
76 | return 0; | |
77 | ||
78 | return 1; | |
79 | } | |
80 | ||
81 | /* Perform our quick-check heuristic for determining if a file is unchanged. */ | |
82 | static int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st) | |
83 | { | |
84 | if (st->st_size != file->length) | |
85 | return 0; | |
59c95e42 | 86 | |
2cda2560 | 87 | /* if always checksum is set then we use the checksum instead |
2f03f956 AT |
88 | of the file time to determine whether to sync */ |
89 | if (always_checksum && S_ISREG(st->st_mode)) { | |
90 | char sum[MD4_SUM_LENGTH]; | |
b7e8628c | 91 | file_checksum(fn, sum, st->st_size); |
728d0922 | 92 | return memcmp(sum, file->u.sum, protocol_version < 21 ? 2 |
84acca07 | 93 | : MD4_SUM_LENGTH) == 0; |
2f03f956 AT |
94 | } |
95 | ||
cc1e997d | 96 | if (size_only) |
84acca07 | 97 | return 1; |
2f03f956 | 98 | |
cc1e997d | 99 | if (ignore_times) |
84acca07 | 100 | return 0; |
cc1e997d | 101 | |
84acca07 | 102 | return cmp_modtime(st->st_mtime, file->modtime) == 0; |
2f03f956 AT |
103 | } |
104 | ||
105 | ||
ec8290c8 | 106 | /* |
195bd906 | 107 | * set (initialize) the size entries in the per-file sum_struct |
ec8290c8 | 108 | * calculating dynamic block and checksum sizes. |
195bd906 | 109 | * |
ec8290c8 | 110 | * This is only called from generate_and_send_sums() but is a separate |
195bd906 S |
111 | * function to encapsulate the logic. |
112 | * | |
113 | * The block size is a rounded square root of file length. | |
114 | * | |
115 | * The checksum size is determined according to: | |
116 | * blocksum_bits = BLOCKSUM_EXP + 2*log2(file_len) - log2(block_len) | |
117 | * provided by Donovan Baarda which gives a probability of rsync | |
118 | * algorithm corrupting data and falling back using the whole md4 | |
119 | * checksums. | |
120 | * | |
121 | * This might be made one of several selectable heuristics. | |
122 | */ | |
1490812a | 123 | static void sum_sizes_sqroot(struct sum_struct *sum, int64 len) |
195bd906 | 124 | { |
a255c592 | 125 | int32 blength; |
da9d12f5 | 126 | int s2length; |
195bd906 | 127 | |
a255c592 | 128 | if (block_size) |
195bd906 | 129 | blength = block_size; |
a255c592 | 130 | else if (len <= BLOCK_SIZE * BLOCK_SIZE) |
195bd906 | 131 | blength = BLOCK_SIZE; |
a255c592 WD |
132 | else { |
133 | int32 c; | |
1490812a | 134 | int64 l; |
eae7165c WD |
135 | int cnt; |
136 | for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {} | |
137 | if (cnt >= 31 || c >= MAX_BLOCK_SIZE) | |
138 | blength = MAX_BLOCK_SIZE; | |
139 | else { | |
140 | blength = 0; | |
141 | do { | |
142 | blength |= c; | |
1490812a | 143 | if (len < (int64)blength * blength) |
eae7165c WD |
144 | blength &= ~c; |
145 | c >>= 1; | |
146 | } while (c >= 8); /* round to multiple of 8 */ | |
147 | blength = MAX(blength, BLOCK_SIZE); | |
195bd906 | 148 | } |
195bd906 S |
149 | } |
150 | ||
d04e9c51 | 151 | if (protocol_version < 27) { |
195bd906 S |
152 | s2length = csum_length; |
153 | } else if (csum_length == SUM_LENGTH) { | |
154 | s2length = SUM_LENGTH; | |
155 | } else { | |
a255c592 | 156 | int32 c; |
1490812a | 157 | int64 l; |
da9d12f5 | 158 | int b = BLOCKSUM_BIAS; |
a255c592 WD |
159 | for (l = len; l >>= 1; b += 2) {} |
160 | for (c = blength; c >>= 1 && b; b--) {} | |
161 | /* add a bit, subtract rollsum, round up. */ | |
162 | s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */ | |
195bd906 S |
163 | s2length = MAX(s2length, csum_length); |
164 | s2length = MIN(s2length, SUM_LENGTH); | |
165 | } | |
166 | ||
167 | sum->flength = len; | |
168 | sum->blength = blength; | |
169 | sum->s2length = s2length; | |
170 | sum->count = (len + (blength - 1)) / blength; | |
171 | sum->remainder = (len % blength); | |
172 | ||
173 | if (sum->count && verbose > 2) { | |
a255c592 WD |
174 | rprintf(FINFO, |
175 | "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n", | |
176 | (double)sum->count, (long)sum->remainder, (long)sum->blength, | |
da9d12f5 | 177 | sum->s2length, (double)sum->flength); |
195bd906 S |
178 | } |
179 | } | |
80605142 | 180 | |
bceec82f | 181 | |
80605142 WD |
182 | /* |
183 | * Generate and send a stream of signatures/checksums that describe a buffer | |
e66dfd18 | 184 | * |
80605142 WD |
185 | * Generate approximately one checksum every block_len bytes. |
186 | */ | |
cd6aa5b5 | 187 | static void generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy) |
2f03f956 | 188 | { |
80605142 | 189 | size_t i; |
6e45e1dd | 190 | struct map_struct *mapbuf; |
80605142 | 191 | struct sum_struct sum; |
2f03f956 AT |
192 | OFF_T offset = 0; |
193 | ||
423dba8e | 194 | sum_sizes_sqroot(&sum, len); |
e66dfd18 | 195 | |
6e45e1dd | 196 | if (len > 0) |
96d910c7 | 197 | mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength); |
6e45e1dd WD |
198 | else |
199 | mapbuf = NULL; | |
200 | ||
fc0257c9 | 201 | write_sum_head(f_out, &sum); |
2f03f956 | 202 | |
80605142 | 203 | for (i = 0; i < sum.count; i++) { |
a255c592 | 204 | int32 n1 = (int32)MIN(len, (OFF_T)sum.blength); |
6e45e1dd | 205 | char *map = map_ptr(mapbuf, offset, n1); |
80605142 WD |
206 | uint32 sum1 = get_checksum1(map, n1); |
207 | char sum2[SUM_LENGTH]; | |
2f03f956 | 208 | |
cd6aa5b5 WD |
209 | if (f_copy >= 0) |
210 | full_write(f_copy, map, n1); | |
211 | ||
80605142 | 212 | get_checksum2(map, n1, sum2); |
2f03f956 | 213 | |
80605142 | 214 | if (verbose > 3) { |
e66dfd18 | 215 | rprintf(FINFO, |
a255c592 WD |
216 | "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n", |
217 | (double)i, (double)offset, (long)n1, | |
0e36d9da | 218 | (unsigned long)sum1); |
80605142 WD |
219 | } |
220 | write_int(f_out, sum1); | |
fc0257c9 | 221 | write_buf(f_out, sum2, sum.s2length); |
2f03f956 AT |
222 | len -= n1; |
223 | offset += n1; | |
224 | } | |
6e45e1dd WD |
225 | |
226 | if (mapbuf) | |
227 | unmap_file(mapbuf); | |
2f03f956 AT |
228 | } |
229 | ||
230 | ||
0492fdfb WD |
231 | /* Acts on flist->file's ndx'th item, whose name is fname. If a directory, |
232 | * make sure it exists, and has the right permissions/timestamp info. For | |
233 | * all other non-regular files (symlinks, etc.) we create them here. For | |
234 | * regular files that have changed, we try to find a basis file and then | |
235 | * start sending checksums. | |
ef1aa910 | 236 | * |
0492fdfb WD |
237 | * Note that f_out is set to -1 when doing final directory-permission and |
238 | * modification-time repair. */ | |
fa13f396 | 239 | static void recv_generator(char *fname, struct file_list *flist, |
0492fdfb | 240 | struct file_struct *file, int ndx, |
41cfde6b | 241 | int f_out, int f_out_name) |
2cda2560 | 242 | { |
41cfde6b | 243 | int fd = -1, f_copy = -1; |
89f7eff3 | 244 | STRUCT_STAT st, partial_st; |
41cfde6b | 245 | struct file_struct *back_file = NULL; |
e7d13fe5 | 246 | int statret, stat_errno; |
41cfde6b | 247 | char *fnamecmp, *partialptr, *backupptr = NULL; |
375a4556 | 248 | char fnamecmpbuf[MAXPATHLEN]; |
41cfde6b | 249 | uchar fnamecmp_type; |
f7632fc6 | 250 | |
dfd5ba6a WD |
251 | if (list_only) |
252 | return; | |
2f03f956 | 253 | |
4875d6b6 WD |
254 | if (verbose > 2) { |
255 | rprintf(FINFO, "recv_generator(%s,%d)\n", | |
256 | safe_fname(fname), ndx); | |
257 | } | |
2f03f956 | 258 | |
7842418b WD |
259 | if (server_filter_list.head |
260 | && check_filter(&server_filter_list, fname, | |
261 | S_ISDIR(file->mode)) < 0) { | |
3e35c34b WD |
262 | if (verbose) { |
263 | rprintf(FINFO, "skipping server-excluded file \"%s\"\n", | |
ecc81fce | 264 | safe_fname(fname)); |
3e35c34b | 265 | } |
97f9dcae | 266 | return; |
3e35c34b | 267 | } |
97f9dcae | 268 | |
73f7af0e WD |
269 | if (dry_run > 1) { |
270 | statret = -1; | |
271 | stat_errno = ENOENT; | |
272 | } else { | |
273 | statret = link_stat(fname, &st, | |
274 | keep_dirlinks && S_ISDIR(file->mode)); | |
275 | stat_errno = errno; | |
276 | } | |
63787382 | 277 | |
a7260c40 | 278 | if (only_existing && statret == -1 && stat_errno == ENOENT) { |
1347d512 | 279 | /* we only want to update existing files */ |
ecc81fce WD |
280 | if (verbose > 1) { |
281 | rprintf(FINFO, "not creating new file \"%s\"\n", | |
282 | safe_fname(fname)); | |
283 | } | |
1347d512 AT |
284 | return; |
285 | } | |
286 | ||
d9b4d267 WD |
287 | if (statret == 0 && !preserve_perms |
288 | && S_ISDIR(st.st_mode) == S_ISDIR(file->mode)) { | |
4df9f368 | 289 | /* if the file exists already and we aren't perserving |
2cda2560 WD |
290 | * permissions then act as though the remote end sent |
291 | * us the file permissions we already have */ | |
67e78a82 WD |
292 | file->mode = (file->mode & ~CHMOD_BITS) |
293 | | (st.st_mode & CHMOD_BITS); | |
4df9f368 AT |
294 | } |
295 | ||
2f03f956 | 296 | if (S_ISDIR(file->mode)) { |
2cda2560 WD |
297 | /* The file to be received is a directory, so we need |
298 | * to prepare appropriately. If there is already a | |
299 | * file of that name and it is *not* a directory, then | |
300 | * we need to delete it. If it doesn't exist, then | |
027428eb | 301 | * (perhaps recursively) create it. */ |
2f03f956 | 302 | if (statret == 0 && !S_ISDIR(st.st_mode)) { |
7e38410e | 303 | delete_file(fname, DEL_TERSE); |
2f03f956 AT |
304 | statret = -1; |
305 | } | |
306 | if (statret != 0 && do_mkdir(fname,file->mode) != 0 && errno != EEXIST) { | |
027428eb WD |
307 | if (!relative_paths || errno != ENOENT |
308 | || create_directory_path(fname, orig_umask) < 0 | |
309 | || do_mkdir(fname, file->mode) < 0) { | |
d62bcc17 WD |
310 | rsyserr(FERROR, errno, |
311 | "recv_generator: mkdir %s failed", | |
312 | full_fname(fname)); | |
2f03f956 AT |
313 | } |
314 | } | |
716e73d4 WD |
315 | if (set_perms(fname, file, statret ? NULL : &st, 0) |
316 | && verbose && f_out != -1) | |
ecc81fce | 317 | rprintf(FINFO, "%s/\n", safe_fname(fname)); |
c93fad5e | 318 | if (delete_during && f_out != -1 && csum_length != SUM_LENGTH |
31937d36 WD |
319 | && (file->flags & FLAG_DEL_HERE)) |
320 | delete_in_dir(flist, fname, file); | |
2f03f956 | 321 | return; |
7d1bfaf7 | 322 | } else if (max_size && file->length > max_size) { |
4875d6b6 WD |
323 | if (verbose > 1) { |
324 | rprintf(FINFO, "%s is over max-size\n", | |
325 | safe_fname(fname)); | |
326 | } | |
7d1bfaf7 | 327 | return; |
2f03f956 AT |
328 | } |
329 | ||
330 | if (preserve_links && S_ISLNK(file->mode)) { | |
331 | #if SUPPORT_LINKS | |
728d0922 | 332 | if (safe_symlinks && unsafe_symlink(file->u.link, fname)) { |
2f03f956 | 333 | if (verbose) { |
4875d6b6 WD |
334 | rprintf(FINFO, |
335 | "ignoring unsafe symlink %s -> \"%s\"\n", | |
336 | full_fname(fname), | |
337 | safe_fname(file->u.link)); | |
2f03f956 AT |
338 | } |
339 | return; | |
340 | } | |
341 | if (statret == 0) { | |
7e38410e WD |
342 | int dflag = S_ISDIR(st.st_mode) ? DEL_DIR : 0; |
343 | char lnk[MAXPATHLEN]; | |
344 | int len; | |
345 | ||
346 | if (!dflag | |
347 | && (len = readlink(fname, lnk, MAXPATHLEN-1)) > 0) { | |
348 | lnk[len] = 0; | |
85d4d142 MP |
349 | /* A link already pointing to the |
350 | * right place -- no further action | |
351 | * required. */ | |
7e38410e | 352 | if (strcmp(lnk, file->u.link) == 0) { |
c41b52c4 WD |
353 | set_perms(fname, file, &st, |
354 | PERMS_REPORT); | |
2f03f956 AT |
355 | return; |
356 | } | |
2cda2560 | 357 | } |
7e38410e WD |
358 | /* Not the right symlink (or not a symlink), so |
359 | * delete it. */ | |
360 | delete_file(fname, dflag | DEL_TERSE); | |
2f03f956 | 361 | } |
728d0922 | 362 | if (do_symlink(file->u.link,fname) != 0) { |
d62bcc17 | 363 | rsyserr(FERROR, errno, "symlink %s -> \"%s\" failed", |
ecc81fce | 364 | full_fname(fname), safe_fname(file->u.link)); |
2f03f956 AT |
365 | } else { |
366 | set_perms(fname,file,NULL,0); | |
367 | if (verbose) { | |
ecc81fce WD |
368 | rprintf(FINFO, "%s -> %s\n", safe_fname(fname), |
369 | safe_fname(file->u.link)); | |
2f03f956 AT |
370 | } |
371 | } | |
372 | #endif | |
373 | return; | |
374 | } | |
375 | ||
2f03f956 | 376 | if (am_root && preserve_devices && IS_DEVICE(file->mode)) { |
2cda2560 | 377 | if (statret != 0 || |
2f03f956 | 378 | st.st_mode != file->mode || |
3915fd75 | 379 | st.st_rdev != file->u.rdev) { |
7e38410e WD |
380 | int dflag = S_ISDIR(st.st_mode) ? DEL_DIR : 0; |
381 | delete_file(fname, dflag | DEL_TERSE); | |
d62bcc17 | 382 | if (verbose > 2) { |
2f03f956 | 383 | rprintf(FINFO,"mknod(%s,0%o,0x%x)\n", |
ecc81fce WD |
384 | safe_fname(fname), |
385 | (int)file->mode, (int)file->u.rdev); | |
d62bcc17 | 386 | } |
728d0922 | 387 | if (do_mknod(fname,file->mode,file->u.rdev) != 0) { |
d62bcc17 WD |
388 | rsyserr(FERROR, errno, "mknod %s failed", |
389 | full_fname(fname)); | |
2f03f956 AT |
390 | } else { |
391 | set_perms(fname,file,NULL,0); | |
ecc81fce WD |
392 | if (verbose) { |
393 | rprintf(FINFO, "%s\n", | |
394 | safe_fname(fname)); | |
395 | } | |
2f03f956 AT |
396 | } |
397 | } else { | |
c41b52c4 | 398 | set_perms(fname, file, &st, PERMS_REPORT); |
2f03f956 AT |
399 | } |
400 | return; | |
401 | } | |
2f03f956 | 402 | |
6dff5992 | 403 | if (preserve_hard_links && hard_link_check(file, HL_CHECK_MASTER)) |
2f03f956 | 404 | return; |
2f03f956 AT |
405 | |
406 | if (!S_ISREG(file->mode)) { | |
ecc81fce WD |
407 | rprintf(FINFO, "skipping non-regular file \"%s\"\n", |
408 | safe_fname(fname)); | |
2f03f956 AT |
409 | return; |
410 | } | |
411 | ||
375a4556 | 412 | fnamecmp = fname; |
41cfde6b | 413 | fnamecmp_type = FNAMECMP_FNAME; |
375a4556 | 414 | |
b7e8628c WD |
415 | if (statret == -1 && basis_dir[0] != NULL) { |
416 | int fallback_match = -1; | |
417 | int match_level = 0; | |
418 | int i = 0; | |
419 | do { | |
420 | pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, | |
421 | basis_dir[i], fname); | |
422 | if (link_stat(fnamecmpbuf, &st, 0) == 0 | |
423 | && S_ISREG(st.st_mode)) { | |
424 | statret = 0; | |
425 | if (link_dest) { | |
426 | if (!match_level) { | |
427 | fallback_match = i; | |
428 | match_level = 1; | |
429 | } else if (match_level == 2 | |
430 | && !unchanged_attrs(file, &st)) | |
431 | continue; | |
432 | if (!unchanged_file(fnamecmpbuf, file, &st)) | |
433 | continue; | |
434 | fallback_match = i; | |
435 | match_level = 2; | |
436 | if (!unchanged_attrs(file, &st)) | |
437 | continue; | |
438 | } | |
439 | match_level = 3; | |
440 | break; | |
441 | } | |
442 | } while (basis_dir[++i] != NULL); | |
443 | if (statret == 0) { | |
444 | if (match_level < 3) { | |
445 | i = fallback_match; | |
446 | pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, | |
447 | basis_dir[i], fname); | |
448 | } | |
59c95e42 | 449 | #if HAVE_LINK |
b7e8628c | 450 | if (link_dest && match_level == 3 && !dry_run) { |
e7d13fe5 WD |
451 | if (do_link(fnamecmpbuf, fname) < 0) { |
452 | if (verbose) { | |
453 | rsyserr(FINFO, errno, | |
454 | "link %s => %s", | |
4875d6b6 | 455 | full_fname(fnamecmpbuf), |
e7d13fe5 WD |
456 | safe_fname(fname)); |
457 | } | |
458 | fnamecmp = fnamecmpbuf; | |
2be2fb3e | 459 | fnamecmp_type = i; |
e7bc9b64 | 460 | } |
e7d13fe5 | 461 | } else |
59c95e42 | 462 | #endif |
41cfde6b | 463 | { |
e7d13fe5 | 464 | fnamecmp = fnamecmpbuf; |
2be2fb3e | 465 | fnamecmp_type = i; |
41cfde6b | 466 | } |
e7d13fe5 WD |
467 | } |
468 | } | |
469 | ||
470 | if (statret == 0 && !S_ISREG(st.st_mode)) { | |
7e38410e WD |
471 | int dflag = S_ISDIR(st.st_mode) ? DEL_DIR : 0; |
472 | if (delete_file(fname, dflag | DEL_TERSE) != 0) | |
e7d13fe5 WD |
473 | return; |
474 | statret = -1; | |
475 | stat_errno = ENOENT; | |
375a4556 DD |
476 | } |
477 | ||
9d954dca | 478 | if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL |
72c19bb3 WD |
479 | && link_stat(partialptr, &partial_st, 0) == 0 |
480 | && S_ISREG(partial_st.st_mode)) { | |
481 | if (statret == -1) | |
482 | goto prepare_to_open; | |
483 | } else | |
484 | partialptr = NULL; | |
89f7eff3 | 485 | |
2f03f956 | 486 | if (statret == -1) { |
6dff5992 WD |
487 | if (preserve_hard_links && hard_link_check(file, HL_SKIP)) |
488 | return; | |
41cfde6b WD |
489 | if (stat_errno == ENOENT) |
490 | goto notify_others; | |
491 | if (verbose > 1) { | |
e7d13fe5 WD |
492 | rsyserr(FERROR, stat_errno, |
493 | "recv_generator: failed to stat %s", | |
d62bcc17 | 494 | full_fname(fname)); |
2f03f956 AT |
495 | } |
496 | return; | |
497 | } | |
498 | ||
41cfde6b | 499 | if (opt_ignore_existing && fnamecmp_type == FNAMECMP_FNAME) { |
3d6feada | 500 | if (verbose > 1) |
ecc81fce | 501 | rprintf(FINFO, "%s exists\n", safe_fname(fname)); |
3d6feada | 502 | return; |
2cda2560 | 503 | } |
3d6feada | 504 | |
41cfde6b | 505 | if (update_only && fnamecmp_type == FNAMECMP_FNAME |
d3a4375f | 506 | && cmp_modtime(st.st_mtime, file->modtime) > 0) { |
2f03f956 | 507 | if (verbose > 1) |
ecc81fce | 508 | rprintf(FINFO, "%s is newer\n", safe_fname(fname)); |
2f03f956 AT |
509 | return; |
510 | } | |
511 | ||
2be2fb3e | 512 | if (!compare_dest && fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH) |
b7e8628c WD |
513 | ; |
514 | else if (unchanged_file(fnamecmp, file, &st)) { | |
41cfde6b | 515 | if (fnamecmp_type == FNAMECMP_FNAME) |
c41b52c4 | 516 | set_perms(fname, file, &st, PERMS_REPORT); |
2f03f956 AT |
517 | return; |
518 | } | |
519 | ||
89f7eff3 | 520 | prepare_to_open: |
9d954dca WD |
521 | if (partialptr) { |
522 | st = partial_st; | |
523 | fnamecmp = partialptr; | |
524 | fnamecmp_type = FNAMECMP_PARTIAL_DIR; | |
525 | statret = 0; | |
526 | } | |
527 | ||
41cfde6b WD |
528 | if (dry_run || whole_file > 0) { |
529 | statret = -1; | |
530 | goto notify_others; | |
2f03f956 | 531 | } |
41cfde6b WD |
532 | if (read_batch) |
533 | goto notify_others; | |
2f03f956 | 534 | |
2cda2560 | 535 | /* open the file */ |
8c9fd200 | 536 | fd = do_open(fnamecmp, O_RDONLY, 0); |
2f03f956 AT |
537 | |
538 | if (fd == -1) { | |
d62bcc17 WD |
539 | rsyserr(FERROR, errno, "failed to open %s, continuing", |
540 | full_fname(fnamecmp)); | |
cd6aa5b5 | 541 | pretend_missing: |
60be6acf | 542 | /* pretend the file didn't exist */ |
6dff5992 WD |
543 | if (preserve_hard_links && hard_link_check(file, HL_SKIP)) |
544 | return; | |
41cfde6b WD |
545 | statret = -1; |
546 | goto notify_others; | |
2f03f956 AT |
547 | } |
548 | ||
cd6aa5b5 WD |
549 | if (inplace && make_backups) { |
550 | if (!(backupptr = get_backup_name(fname))) { | |
551 | close(fd); | |
552 | return; | |
553 | } | |
7842418b | 554 | if (!(back_file = make_file(fname, NULL, NO_FILTERS))) { |
cd6aa5b5 WD |
555 | close(fd); |
556 | goto pretend_missing; | |
557 | } | |
558 | if (robust_unlink(backupptr) && errno != ENOENT) { | |
559 | rsyserr(FERROR, errno, "unlink %s", | |
560 | full_fname(backupptr)); | |
561 | free(back_file); | |
562 | close(fd); | |
563 | return; | |
564 | } | |
565 | if ((f_copy = do_open(backupptr, | |
566 | O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) { | |
567 | rsyserr(FERROR, errno, "open %s", | |
568 | full_fname(backupptr)); | |
569 | free(back_file); | |
570 | close(fd); | |
571 | return; | |
572 | } | |
41cfde6b | 573 | fnamecmp_type = FNAMECMP_BACKUP; |
cd6aa5b5 WD |
574 | } |
575 | ||
dfd5ba6a | 576 | if (verbose > 3) { |
ecc81fce WD |
577 | rprintf(FINFO, "gen mapped %s of size %.0f\n", |
578 | safe_fname(fnamecmp), (double)st.st_size); | |
dfd5ba6a | 579 | } |
2f03f956 | 580 | |
2f03f956 | 581 | if (verbose > 2) |
0492fdfb | 582 | rprintf(FINFO, "generating and sending sums for %d\n", ndx); |
2f03f956 | 583 | |
41cfde6b | 584 | notify_others: |
0492fdfb | 585 | write_int(f_out, ndx); |
17b5b32f WD |
586 | if (protocol_version >= 29 && inplace && !read_batch) |
587 | write_byte(f_out, fnamecmp_type); | |
41cfde6b WD |
588 | if (f_out_name >= 0) |
589 | write_byte(f_out_name, fnamecmp_type); | |
cd6aa5b5 | 590 | |
41cfde6b WD |
591 | if (dry_run || read_batch) |
592 | return; | |
593 | ||
594 | if (statret == 0) { | |
595 | generate_and_send_sums(fd, st.st_size, f_out, f_copy); | |
2f03f956 | 596 | |
41cfde6b WD |
597 | if (f_copy >= 0) { |
598 | close(f_copy); | |
599 | set_perms(backupptr, back_file, NULL, 0); | |
600 | if (verbose > 1) { | |
601 | rprintf(FINFO, "backed up %s to %s\n", | |
4875d6b6 | 602 | safe_fname(fname), safe_fname(backupptr)); |
41cfde6b WD |
603 | } |
604 | free(back_file); | |
605 | } | |
606 | ||
607 | close(fd); | |
608 | } else | |
609 | write_sum_head(f_out, NULL); | |
2f03f956 AT |
610 | } |
611 | ||
612 | ||
41cfde6b WD |
613 | void generate_files(int f_out, struct file_list *flist, char *local_name, |
614 | int f_out_name) | |
2f03f956 AT |
615 | { |
616 | int i; | |
e1f67417 | 617 | int phase = 0; |
968c8030 | 618 | char fbuf[MAXPATHLEN]; |
3ea9bbd6 WD |
619 | int need_retouch_dir_times = preserve_times && !omit_dir_times; |
620 | int need_retouch_dir_perms = 0; | |
0492fdfb WD |
621 | int save_only_existing = only_existing; |
622 | int save_opt_ignore_existing = opt_ignore_existing; | |
2f03f956 | 623 | |
45e08edb WD |
624 | if (verbose > 2) { |
625 | rprintf(FINFO, "generator starting pid=%ld count=%d\n", | |
626 | (long)getpid(), flist->count); | |
627 | } | |
2f03f956 | 628 | |
3e7053ac MP |
629 | if (verbose >= 2) { |
630 | rprintf(FINFO, | |
f38bd4a0 | 631 | whole_file > 0 |
3e7053ac MP |
632 | ? "delta-transmission disabled for local transfer or --whole-file\n" |
633 | : "delta transmission enabled\n"); | |
634 | } | |
2cda2560 | 635 | |
0492fdfb WD |
636 | /* We expect to just sit around now, so don't exit on a timeout. |
637 | * If we really get a timeout then the other process should exit. */ | |
a57873b7 AT |
638 | io_timeout = 0; |
639 | ||
2f03f956 AT |
640 | for (i = 0; i < flist->count; i++) { |
641 | struct file_struct *file = flist->files[i]; | |
dfd5ba6a | 642 | struct file_struct copy; |
2f03f956 | 643 | |
dfd5ba6a WD |
644 | if (!file->basename) |
645 | continue; | |
0492fdfb WD |
646 | |
647 | /* We need to ensure that any dirs we create have writeable | |
648 | * permissions during the time we are putting files within | |
649 | * them. This is then fixed after the transfer is done. */ | |
dfd5ba6a WD |
650 | if (!am_root && S_ISDIR(file->mode) && !(file->mode & S_IWUSR)) { |
651 | copy = *file; | |
dfd5ba6a WD |
652 | copy.mode |= S_IWUSR; /* user write */ |
653 | file = © | |
3ea9bbd6 | 654 | need_retouch_dir_perms = 1; |
2f03f956 AT |
655 | } |
656 | ||
3fef5364 | 657 | recv_generator(local_name ? local_name : f_name_to(file, fbuf), |
fa13f396 | 658 | flist, file, i, f_out, f_out_name); |
2f03f956 | 659 | } |
c93fad5e | 660 | if (delete_during) |
31937d36 | 661 | delete_in_dir(NULL, NULL, NULL); |
2f03f956 AT |
662 | |
663 | phase++; | |
664 | csum_length = SUM_LENGTH; | |
0492fdfb WD |
665 | only_existing = max_size = opt_ignore_existing = 0; |
666 | update_only = always_checksum = size_only = 0; | |
e1f67417 | 667 | ignore_times = 1; |
2f03f956 AT |
668 | |
669 | if (verbose > 2) | |
670 | rprintf(FINFO,"generate_files phase=%d\n",phase); | |
671 | ||
7daccb8e | 672 | write_int(f_out, -1); |
2f03f956 | 673 | |
bc63ae3f S |
674 | /* files can cycle through the system more than once |
675 | * to catch initial checksum errors */ | |
b9b15fb1 | 676 | while ((i = get_redo_num()) != -1) { |
bc63ae3f | 677 | struct file_struct *file = flist->files[i]; |
3fef5364 | 678 | recv_generator(local_name ? local_name : f_name_to(file, fbuf), |
fa13f396 | 679 | flist, file, i, f_out, f_out_name); |
bc63ae3f | 680 | } |
2f03f956 | 681 | |
bc63ae3f | 682 | phase++; |
0492fdfb WD |
683 | only_existing = save_only_existing; |
684 | opt_ignore_existing = save_opt_ignore_existing; | |
685 | ||
bc63ae3f S |
686 | if (verbose > 2) |
687 | rprintf(FINFO,"generate_files phase=%d\n",phase); | |
2f03f956 | 688 | |
7daccb8e | 689 | write_int(f_out, -1); |
6dff5992 | 690 | |
b0da4b23 WD |
691 | /* Read post-redo-phase MSG_DONE and any prior messages. */ |
692 | get_redo_num(); | |
693 | ||
6dff5992 WD |
694 | if (preserve_hard_links) |
695 | do_hard_links(); | |
696 | ||
0492fdfb WD |
697 | if ((need_retouch_dir_perms || need_retouch_dir_times) |
698 | && !list_only && !local_name && !dry_run) { | |
3ea9bbd6 WD |
699 | /* Now we need to fix any directory permissions that were |
700 | * modified during the transfer and/or re-set any tweaked | |
701 | * modified-time values. */ | |
702 | for (i = 0; i < flist->count; i++) { | |
703 | struct file_struct *file = flist->files[i]; | |
704 | if (!file->basename || !S_ISDIR(file->mode)) | |
705 | continue; | |
706 | if (!need_retouch_dir_times && file->mode & S_IWUSR) | |
707 | continue; | |
708 | recv_generator(local_name ? local_name : f_name(file), | |
709 | flist, file, i, -1, -1); | |
710 | } | |
6dff5992 WD |
711 | } |
712 | ||
713 | if (verbose > 2) | |
714 | rprintf(FINFO,"generate_files finished\n"); | |
2f03f956 | 715 | } |