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; | |
2f03f956 | 37 | extern int update_only; |
3d6feada | 38 | extern int opt_ignore_existing; |
cd6aa5b5 WD |
39 | extern int inplace; |
40 | extern int make_backups; | |
2f03f956 AT |
41 | extern int csum_length; |
42 | extern int ignore_times; | |
f83f0548 | 43 | extern int size_only; |
2f03f956 | 44 | extern int io_timeout; |
d04e9c51 | 45 | extern int protocol_version; |
2f03f956 | 46 | extern int always_checksum; |
a7260c40 | 47 | extern char *partial_dir; |
60c8d7bc | 48 | extern char *compare_dest; |
59c95e42 | 49 | extern int link_dest; |
5774786f WD |
50 | extern int whole_file; |
51 | extern int local_server; | |
5774786f | 52 | extern int list_only; |
b9f592fb | 53 | extern int read_batch; |
5774786f WD |
54 | extern int only_existing; |
55 | extern int orig_umask; | |
56 | extern int safe_symlinks; | |
ec8290c8 | 57 | extern unsigned int block_size; |
2f03f956 | 58 | |
97f9dcae WD |
59 | extern struct exclude_list_struct server_exclude_list; |
60 | ||
2f03f956 AT |
61 | |
62 | /* choose whether to skip a particular file */ | |
dfd5ba6a | 63 | static int skip_file(char *fname, struct file_struct *file, STRUCT_STAT *st) |
2f03f956 | 64 | { |
cc1e997d | 65 | if (st->st_size != file->length) |
84acca07 | 66 | return 0; |
59c95e42 | 67 | if (link_dest) { |
e7bc9b64 | 68 | if (preserve_perms |
67e78a82 | 69 | && (st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) |
84acca07 | 70 | return 0; |
bb24028f | 71 | |
6744b62d | 72 | if (am_root && preserve_uid && st->st_uid != file->uid) |
84acca07 | 73 | return 0; |
bb24028f | 74 | |
a60e2dca S |
75 | if (preserve_gid && file->gid != GID_NONE |
76 | && st->st_gid != file->gid) | |
84acca07 | 77 | return 0; |
59c95e42 DD |
78 | } |
79 | ||
2cda2560 | 80 | /* if always checksum is set then we use the checksum instead |
2f03f956 AT |
81 | of the file time to determine whether to sync */ |
82 | if (always_checksum && S_ISREG(st->st_mode)) { | |
83 | char sum[MD4_SUM_LENGTH]; | |
84 | file_checksum(fname,sum,st->st_size); | |
728d0922 | 85 | return memcmp(sum, file->u.sum, protocol_version < 21 ? 2 |
84acca07 | 86 | : MD4_SUM_LENGTH) == 0; |
2f03f956 AT |
87 | } |
88 | ||
cc1e997d | 89 | if (size_only) |
84acca07 | 90 | return 1; |
2f03f956 | 91 | |
cc1e997d | 92 | if (ignore_times) |
84acca07 | 93 | return 0; |
cc1e997d | 94 | |
84acca07 | 95 | return cmp_modtime(st->st_mtime, file->modtime) == 0; |
2f03f956 AT |
96 | } |
97 | ||
98 | ||
2f03f956 | 99 | /* |
0e36d9da | 100 | * NULL sum_struct means we have no checksums |
195bd906 | 101 | */ |
fc0257c9 | 102 | void write_sum_head(int f, struct sum_struct *sum) |
2f03f956 | 103 | { |
fc0257c9 S |
104 | static struct sum_struct null_sum; |
105 | ||
c338460d | 106 | if (sum == NULL) |
fc0257c9 S |
107 | sum = &null_sum; |
108 | ||
109 | write_int(f, sum->count); | |
110 | write_int(f, sum->blength); | |
d04e9c51 | 111 | if (protocol_version >= 27) |
fc0257c9 S |
112 | write_int(f, sum->s2length); |
113 | write_int(f, sum->remainder); | |
2f03f956 AT |
114 | } |
115 | ||
ec8290c8 | 116 | /* |
195bd906 | 117 | * set (initialize) the size entries in the per-file sum_struct |
ec8290c8 | 118 | * calculating dynamic block and checksum sizes. |
195bd906 | 119 | * |
ec8290c8 | 120 | * This is only called from generate_and_send_sums() but is a separate |
195bd906 S |
121 | * function to encapsulate the logic. |
122 | * | |
123 | * The block size is a rounded square root of file length. | |
124 | * | |
125 | * The checksum size is determined according to: | |
126 | * blocksum_bits = BLOCKSUM_EXP + 2*log2(file_len) - log2(block_len) | |
127 | * provided by Donovan Baarda which gives a probability of rsync | |
128 | * algorithm corrupting data and falling back using the whole md4 | |
129 | * checksums. | |
130 | * | |
131 | * This might be made one of several selectable heuristics. | |
132 | */ | |
bceec82f | 133 | |
423dba8e | 134 | static void sum_sizes_sqroot(struct sum_struct *sum, uint64 len) |
195bd906 | 135 | { |
da9d12f5 WD |
136 | unsigned int blength; |
137 | int s2length; | |
195bd906 S |
138 | uint32 c; |
139 | uint64 l; | |
140 | ||
141 | if (block_size) { | |
142 | blength = block_size; | |
143 | } else if (len <= BLOCK_SIZE * BLOCK_SIZE) { | |
144 | blength = BLOCK_SIZE; | |
145 | } else { | |
146 | l = len; | |
147 | c = 1; | |
148 | while (l >>= 2) { | |
149 | c <<= 1; | |
150 | } | |
151 | blength = 0; | |
152 | do { | |
153 | blength |= c; | |
fb55e28d | 154 | if (len < (uint64)blength * blength) |
195bd906 S |
155 | blength &= ~c; |
156 | c >>= 1; | |
157 | } while (c >= 8); /* round to multiple of 8 */ | |
158 | blength = MAX(blength, BLOCK_SIZE); | |
159 | } | |
160 | ||
d04e9c51 | 161 | if (protocol_version < 27) { |
195bd906 S |
162 | s2length = csum_length; |
163 | } else if (csum_length == SUM_LENGTH) { | |
164 | s2length = SUM_LENGTH; | |
165 | } else { | |
da9d12f5 | 166 | int b = BLOCKSUM_BIAS; |
195bd906 S |
167 | l = len; |
168 | while (l >>= 1) { | |
169 | b += 2; | |
170 | } | |
171 | c = blength; | |
172 | while (c >>= 1 && b) { | |
173 | b--; | |
174 | } | |
175 | s2length = (b + 1 - 32 + 7) / 8; /* add a bit, | |
176 | * subtract rollsum, | |
177 | * round up | |
178 | * --optimize in compiler-- | |
179 | */ | |
180 | s2length = MAX(s2length, csum_length); | |
181 | s2length = MIN(s2length, SUM_LENGTH); | |
182 | } | |
183 | ||
184 | sum->flength = len; | |
185 | sum->blength = blength; | |
186 | sum->s2length = s2length; | |
187 | sum->count = (len + (blength - 1)) / blength; | |
188 | sum->remainder = (len % blength); | |
189 | ||
190 | if (sum->count && verbose > 2) { | |
0e36d9da WD |
191 | rprintf(FINFO, "count=%.0f rem=%u blength=%u s2length=%d flength=%.0f\n", |
192 | (double)sum->count, sum->remainder, sum->blength, | |
da9d12f5 | 193 | sum->s2length, (double)sum->flength); |
195bd906 S |
194 | } |
195 | } | |
80605142 | 196 | |
bceec82f | 197 | |
80605142 WD |
198 | /* |
199 | * Generate and send a stream of signatures/checksums that describe a buffer | |
e66dfd18 | 200 | * |
80605142 WD |
201 | * Generate approximately one checksum every block_len bytes. |
202 | */ | |
cd6aa5b5 | 203 | static void generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy) |
2f03f956 | 204 | { |
80605142 | 205 | size_t i; |
6e45e1dd | 206 | struct map_struct *mapbuf; |
80605142 | 207 | struct sum_struct sum; |
2f03f956 AT |
208 | OFF_T offset = 0; |
209 | ||
423dba8e | 210 | sum_sizes_sqroot(&sum, len); |
e66dfd18 | 211 | |
6e45e1dd | 212 | if (len > 0) |
96d910c7 | 213 | mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength); |
6e45e1dd WD |
214 | else |
215 | mapbuf = NULL; | |
216 | ||
fc0257c9 | 217 | write_sum_head(f_out, &sum); |
2f03f956 | 218 | |
80605142 | 219 | for (i = 0; i < sum.count; i++) { |
0e36d9da | 220 | unsigned int n1 = MIN(len, sum.blength); |
6e45e1dd | 221 | char *map = map_ptr(mapbuf, offset, n1); |
80605142 WD |
222 | uint32 sum1 = get_checksum1(map, n1); |
223 | char sum2[SUM_LENGTH]; | |
2f03f956 | 224 | |
cd6aa5b5 WD |
225 | if (f_copy >= 0) |
226 | full_write(f_copy, map, n1); | |
227 | ||
80605142 | 228 | get_checksum2(map, n1, sum2); |
2f03f956 | 229 | |
80605142 | 230 | if (verbose > 3) { |
e66dfd18 | 231 | rprintf(FINFO, |
0e36d9da WD |
232 | "chunk[%.0f] offset=%.0f len=%u sum1=%08lx\n", |
233 | (double)i, (double)offset, n1, | |
234 | (unsigned long)sum1); | |
80605142 WD |
235 | } |
236 | write_int(f_out, sum1); | |
fc0257c9 | 237 | write_buf(f_out, sum2, sum.s2length); |
2f03f956 AT |
238 | len -= n1; |
239 | offset += n1; | |
240 | } | |
6e45e1dd WD |
241 | |
242 | if (mapbuf) | |
243 | unmap_file(mapbuf); | |
2f03f956 AT |
244 | } |
245 | ||
246 | ||
ef1aa910 | 247 | |
fd322eef | 248 | /* |
420ef2c4 | 249 | * Acts on file number @p i from @p flist, whose name is @p fname. |
ef1aa910 MP |
250 | * |
251 | * First fixes up permissions, then generates checksums for the file. | |
252 | * | |
420ef2c4 MP |
253 | * @note This comment was added later by mbp who was trying to work it |
254 | * out. It might be wrong. | |
fd322eef WD |
255 | */ |
256 | static void recv_generator(char *fname, struct file_struct *file, int i, | |
257 | int f_out) | |
2cda2560 | 258 | { |
cd6aa5b5 | 259 | int fd, f_copy; |
89f7eff3 | 260 | STRUCT_STAT st, partial_st; |
cd6aa5b5 | 261 | struct file_struct *back_file; |
e7d13fe5 | 262 | int statret, stat_errno; |
cd6aa5b5 | 263 | char *fnamecmp, *partialptr, *backupptr; |
375a4556 | 264 | char fnamecmpbuf[MAXPATHLEN]; |
f7632fc6 | 265 | |
dfd5ba6a WD |
266 | if (list_only) |
267 | return; | |
2f03f956 AT |
268 | |
269 | if (verbose > 2) | |
ecc81fce | 270 | rprintf(FINFO, "recv_generator(%s,%d)\n", safe_fname(fname), i); |
2f03f956 | 271 | |
97f9dcae WD |
272 | if (server_exclude_list.head |
273 | && check_exclude(&server_exclude_list, fname, | |
3e35c34b WD |
274 | S_ISDIR(file->mode)) < 0) { |
275 | if (verbose) { | |
276 | rprintf(FINFO, "skipping server-excluded file \"%s\"\n", | |
ecc81fce | 277 | safe_fname(fname)); |
3e35c34b | 278 | } |
97f9dcae | 279 | return; |
3e35c34b | 280 | } |
97f9dcae | 281 | |
73f7af0e WD |
282 | if (dry_run > 1) { |
283 | statret = -1; | |
284 | stat_errno = ENOENT; | |
285 | } else { | |
286 | statret = link_stat(fname, &st, | |
287 | keep_dirlinks && S_ISDIR(file->mode)); | |
288 | stat_errno = errno; | |
289 | } | |
63787382 | 290 | |
a7260c40 | 291 | if (only_existing && statret == -1 && stat_errno == ENOENT) { |
1347d512 | 292 | /* we only want to update existing files */ |
ecc81fce WD |
293 | if (verbose > 1) { |
294 | rprintf(FINFO, "not creating new file \"%s\"\n", | |
295 | safe_fname(fname)); | |
296 | } | |
1347d512 AT |
297 | return; |
298 | } | |
299 | ||
d9b4d267 WD |
300 | if (statret == 0 && !preserve_perms |
301 | && S_ISDIR(st.st_mode) == S_ISDIR(file->mode)) { | |
4df9f368 | 302 | /* if the file exists already and we aren't perserving |
2cda2560 WD |
303 | * permissions then act as though the remote end sent |
304 | * us the file permissions we already have */ | |
67e78a82 WD |
305 | file->mode = (file->mode & ~CHMOD_BITS) |
306 | | (st.st_mode & CHMOD_BITS); | |
4df9f368 AT |
307 | } |
308 | ||
2f03f956 | 309 | if (S_ISDIR(file->mode)) { |
2cda2560 WD |
310 | /* The file to be received is a directory, so we need |
311 | * to prepare appropriately. If there is already a | |
312 | * file of that name and it is *not* a directory, then | |
313 | * we need to delete it. If it doesn't exist, then | |
314 | * recursively create it. */ | |
315 | ||
ec8290c8 WD |
316 | if (dry_run) |
317 | return; /* TODO: causes inaccuracies -- fix */ | |
2f03f956 | 318 | if (statret == 0 && !S_ISDIR(st.st_mode)) { |
c7c11a0d | 319 | if (robust_unlink(fname) != 0) { |
d62bcc17 WD |
320 | rsyserr(FERROR, errno, |
321 | "recv_generator: unlink %s to make room for directory", | |
322 | full_fname(fname)); | |
2f03f956 AT |
323 | return; |
324 | } | |
325 | statret = -1; | |
326 | } | |
327 | if (statret != 0 && do_mkdir(fname,file->mode) != 0 && errno != EEXIST) { | |
d62bcc17 WD |
328 | if (!(relative_paths && errno == ENOENT |
329 | && create_directory_path(fname, orig_umask) == 0 | |
330 | && do_mkdir(fname, file->mode) == 0)) { | |
331 | rsyserr(FERROR, errno, | |
332 | "recv_generator: mkdir %s failed", | |
333 | full_fname(fname)); | |
2f03f956 AT |
334 | } |
335 | } | |
716e73d4 WD |
336 | /* f_out is set to -1 when doing final directory-permission |
337 | * and modification-time repair. */ | |
338 | if (set_perms(fname, file, statret ? NULL : &st, 0) | |
339 | && verbose && f_out != -1) | |
ecc81fce | 340 | rprintf(FINFO, "%s/\n", safe_fname(fname)); |
2f03f956 AT |
341 | return; |
342 | } | |
343 | ||
344 | if (preserve_links && S_ISLNK(file->mode)) { | |
345 | #if SUPPORT_LINKS | |
346 | char lnk[MAXPATHLEN]; | |
347 | int l; | |
2f03f956 | 348 | |
728d0922 | 349 | if (safe_symlinks && unsafe_symlink(file->u.link, fname)) { |
2f03f956 | 350 | if (verbose) { |
ea42541f | 351 | rprintf(FINFO, "ignoring unsafe symlink %s -> \"%s\"\n", |
728d0922 | 352 | full_fname(fname), file->u.link); |
2f03f956 AT |
353 | } |
354 | return; | |
355 | } | |
356 | if (statret == 0) { | |
357 | l = readlink(fname,lnk,MAXPATHLEN-1); | |
358 | if (l > 0) { | |
359 | lnk[l] = 0; | |
85d4d142 MP |
360 | /* A link already pointing to the |
361 | * right place -- no further action | |
362 | * required. */ | |
728d0922 | 363 | if (strcmp(lnk,file->u.link) == 0) { |
c41b52c4 WD |
364 | set_perms(fname, file, &st, |
365 | PERMS_REPORT); | |
2f03f956 AT |
366 | return; |
367 | } | |
2cda2560 | 368 | } |
85d4d142 MP |
369 | /* Not a symlink, so delete whatever's |
370 | * already there and put a new symlink | |
2cda2560 | 371 | * in place. */ |
4b3977bf | 372 | delete_file(fname); |
2f03f956 | 373 | } |
728d0922 | 374 | if (do_symlink(file->u.link,fname) != 0) { |
d62bcc17 | 375 | rsyserr(FERROR, errno, "symlink %s -> \"%s\" failed", |
ecc81fce | 376 | full_fname(fname), safe_fname(file->u.link)); |
2f03f956 AT |
377 | } else { |
378 | set_perms(fname,file,NULL,0); | |
379 | if (verbose) { | |
ecc81fce WD |
380 | rprintf(FINFO, "%s -> %s\n", safe_fname(fname), |
381 | safe_fname(file->u.link)); | |
2f03f956 AT |
382 | } |
383 | } | |
384 | #endif | |
385 | return; | |
386 | } | |
387 | ||
388 | #ifdef HAVE_MKNOD | |
389 | if (am_root && preserve_devices && IS_DEVICE(file->mode)) { | |
2cda2560 | 390 | if (statret != 0 || |
2f03f956 | 391 | st.st_mode != file->mode || |
3915fd75 | 392 | st.st_rdev != file->u.rdev) { |
2f03f956 | 393 | delete_file(fname); |
d62bcc17 | 394 | if (verbose > 2) { |
2f03f956 | 395 | rprintf(FINFO,"mknod(%s,0%o,0x%x)\n", |
ecc81fce WD |
396 | safe_fname(fname), |
397 | (int)file->mode, (int)file->u.rdev); | |
d62bcc17 | 398 | } |
728d0922 | 399 | if (do_mknod(fname,file->mode,file->u.rdev) != 0) { |
d62bcc17 WD |
400 | rsyserr(FERROR, errno, "mknod %s failed", |
401 | full_fname(fname)); | |
2f03f956 AT |
402 | } else { |
403 | set_perms(fname,file,NULL,0); | |
ecc81fce WD |
404 | if (verbose) { |
405 | rprintf(FINFO, "%s\n", | |
406 | safe_fname(fname)); | |
407 | } | |
2f03f956 AT |
408 | } |
409 | } else { | |
c41b52c4 | 410 | set_perms(fname, file, &st, PERMS_REPORT); |
2f03f956 AT |
411 | } |
412 | return; | |
413 | } | |
414 | #endif | |
415 | ||
6dff5992 | 416 | if (preserve_hard_links && hard_link_check(file, HL_CHECK_MASTER)) |
2f03f956 | 417 | return; |
2f03f956 AT |
418 | |
419 | if (!S_ISREG(file->mode)) { | |
ecc81fce WD |
420 | rprintf(FINFO, "skipping non-regular file \"%s\"\n", |
421 | safe_fname(fname)); | |
2f03f956 AT |
422 | return; |
423 | } | |
424 | ||
375a4556 DD |
425 | fnamecmp = fname; |
426 | ||
c338460d | 427 | if (statret == -1 && compare_dest != NULL) { |
375a4556 | 428 | /* try the file at compare_dest instead */ |
248ed45f | 429 | pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, compare_dest, fname); |
e7d13fe5 WD |
430 | if (link_stat(fnamecmpbuf, &st, 0) == 0 |
431 | && S_ISREG(st.st_mode)) { | |
59c95e42 | 432 | #if HAVE_LINK |
e7d13fe5 WD |
433 | if (link_dest && !dry_run) { |
434 | if (do_link(fnamecmpbuf, fname) < 0) { | |
435 | if (verbose) { | |
436 | rsyserr(FINFO, errno, | |
437 | "link %s => %s", | |
438 | fnamecmpbuf, | |
439 | safe_fname(fname)); | |
440 | } | |
441 | fnamecmp = fnamecmpbuf; | |
e7bc9b64 | 442 | } |
e7d13fe5 | 443 | } else |
59c95e42 | 444 | #endif |
e7d13fe5 WD |
445 | fnamecmp = fnamecmpbuf; |
446 | statret = 0; | |
447 | } | |
448 | } | |
449 | ||
450 | if (statret == 0 && !S_ISREG(st.st_mode)) { | |
451 | if (delete_file(fname) != 0) | |
452 | return; | |
453 | statret = -1; | |
454 | stat_errno = ENOENT; | |
375a4556 DD |
455 | } |
456 | ||
72c19bb3 WD |
457 | if (partial_dir && (partialptr = partial_dir_fname(fname)) |
458 | && link_stat(partialptr, &partial_st, 0) == 0 | |
459 | && S_ISREG(partial_st.st_mode)) { | |
460 | if (statret == -1) | |
461 | goto prepare_to_open; | |
462 | } else | |
463 | partialptr = NULL; | |
89f7eff3 | 464 | |
2f03f956 | 465 | if (statret == -1) { |
6dff5992 WD |
466 | if (preserve_hard_links && hard_link_check(file, HL_SKIP)) |
467 | return; | |
e7d13fe5 | 468 | if (stat_errno == ENOENT) { |
2f03f956 | 469 | write_int(f_out,i); |
727b35f6 | 470 | if (!dry_run && !read_batch) |
ec8290c8 | 471 | write_sum_head(f_out, NULL); |
ea42541f | 472 | } else if (verbose > 1) { |
e7d13fe5 WD |
473 | rsyserr(FERROR, stat_errno, |
474 | "recv_generator: failed to stat %s", | |
d62bcc17 | 475 | full_fname(fname)); |
2f03f956 AT |
476 | } |
477 | return; | |
478 | } | |
479 | ||
2cda2560 | 480 | if (opt_ignore_existing && fnamecmp == fname) { |
3d6feada | 481 | if (verbose > 1) |
ecc81fce | 482 | rprintf(FINFO, "%s exists\n", safe_fname(fname)); |
3d6feada | 483 | return; |
2cda2560 | 484 | } |
3d6feada | 485 | |
d3a4375f WD |
486 | if (update_only && fnamecmp == fname |
487 | && cmp_modtime(st.st_mtime, file->modtime) > 0) { | |
2f03f956 | 488 | if (verbose > 1) |
ecc81fce | 489 | rprintf(FINFO, "%s is newer\n", safe_fname(fname)); |
2f03f956 AT |
490 | return; |
491 | } | |
492 | ||
065a6052 | 493 | if (skip_file(fnamecmp, file, &st)) { |
bd4ed7f7 | 494 | if (fnamecmp == fname) |
c41b52c4 | 495 | set_perms(fname, file, &st, PERMS_REPORT); |
2f03f956 AT |
496 | return; |
497 | } | |
498 | ||
89f7eff3 | 499 | prepare_to_open: |
727b35f6 | 500 | if (dry_run || read_batch) { |
2f03f956 AT |
501 | write_int(f_out,i); |
502 | return; | |
503 | } | |
504 | ||
f38bd4a0 | 505 | if (whole_file > 0) { |
2f03f956 | 506 | write_int(f_out,i); |
fc0257c9 | 507 | write_sum_head(f_out, NULL); |
2f03f956 AT |
508 | return; |
509 | } | |
510 | ||
89f7eff3 WD |
511 | if (partialptr) { |
512 | st = partial_st; | |
513 | fnamecmp = partialptr; | |
a7260c40 WD |
514 | } |
515 | ||
2cda2560 | 516 | /* open the file */ |
8c9fd200 | 517 | fd = do_open(fnamecmp, O_RDONLY, 0); |
2f03f956 AT |
518 | |
519 | if (fd == -1) { | |
d62bcc17 WD |
520 | rsyserr(FERROR, errno, "failed to open %s, continuing", |
521 | full_fname(fnamecmp)); | |
cd6aa5b5 | 522 | pretend_missing: |
60be6acf | 523 | /* pretend the file didn't exist */ |
6dff5992 WD |
524 | if (preserve_hard_links && hard_link_check(file, HL_SKIP)) |
525 | return; | |
60be6acf | 526 | write_int(f_out,i); |
fc0257c9 | 527 | write_sum_head(f_out, NULL); |
2f03f956 AT |
528 | return; |
529 | } | |
530 | ||
cd6aa5b5 WD |
531 | if (inplace && make_backups) { |
532 | if (!(backupptr = get_backup_name(fname))) { | |
533 | close(fd); | |
534 | return; | |
535 | } | |
536 | if (!(back_file = make_file(fname, NULL, NO_EXCLUDES))) { | |
537 | close(fd); | |
538 | goto pretend_missing; | |
539 | } | |
540 | if (robust_unlink(backupptr) && errno != ENOENT) { | |
541 | rsyserr(FERROR, errno, "unlink %s", | |
542 | full_fname(backupptr)); | |
543 | free(back_file); | |
544 | close(fd); | |
545 | return; | |
546 | } | |
547 | if ((f_copy = do_open(backupptr, | |
548 | O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) { | |
549 | rsyserr(FERROR, errno, "open %s", | |
550 | full_fname(backupptr)); | |
551 | free(back_file); | |
552 | close(fd); | |
553 | return; | |
554 | } | |
555 | } else { | |
556 | backupptr = NULL; | |
557 | back_file = NULL; | |
558 | f_copy = -1; | |
559 | } | |
560 | ||
dfd5ba6a | 561 | if (verbose > 3) { |
ecc81fce WD |
562 | rprintf(FINFO, "gen mapped %s of size %.0f\n", |
563 | safe_fname(fnamecmp), (double)st.st_size); | |
dfd5ba6a | 564 | } |
2f03f956 | 565 | |
2f03f956 | 566 | if (verbose > 2) |
80605142 | 567 | rprintf(FINFO, "generating and sending sums for %d\n", i); |
2f03f956 AT |
568 | |
569 | write_int(f_out,i); | |
cd6aa5b5 WD |
570 | generate_and_send_sums(fd, st.st_size, f_out, f_copy); |
571 | ||
572 | if (f_copy >= 0) { | |
573 | close(f_copy); | |
574 | set_perms(backupptr, back_file, NULL, 0); | |
89389a29 WD |
575 | if (verbose > 1) |
576 | rprintf(FINFO, "backed up %s to %s\n", fname, backupptr); | |
cd6aa5b5 WD |
577 | free(back_file); |
578 | } | |
2f03f956 AT |
579 | |
580 | close(fd); | |
2f03f956 AT |
581 | } |
582 | ||
583 | ||
7daccb8e | 584 | void generate_files(int f_out, struct file_list *flist, char *local_name) |
2f03f956 AT |
585 | { |
586 | int i; | |
e1f67417 | 587 | int phase = 0; |
968c8030 | 588 | char fbuf[MAXPATHLEN]; |
2f03f956 | 589 | |
45e08edb WD |
590 | if (verbose > 2) { |
591 | rprintf(FINFO, "generator starting pid=%ld count=%d\n", | |
592 | (long)getpid(), flist->count); | |
593 | } | |
2f03f956 | 594 | |
3e7053ac MP |
595 | if (verbose >= 2) { |
596 | rprintf(FINFO, | |
f38bd4a0 | 597 | whole_file > 0 |
3e7053ac MP |
598 | ? "delta-transmission disabled for local transfer or --whole-file\n" |
599 | : "delta transmission enabled\n"); | |
600 | } | |
2cda2560 | 601 | |
a57873b7 AT |
602 | /* we expect to just sit around now, so don't exit on a |
603 | timeout. If we really get a timeout then the other process should | |
604 | exit */ | |
605 | io_timeout = 0; | |
606 | ||
2f03f956 AT |
607 | for (i = 0; i < flist->count; i++) { |
608 | struct file_struct *file = flist->files[i]; | |
dfd5ba6a | 609 | struct file_struct copy; |
2f03f956 | 610 | |
dfd5ba6a WD |
611 | if (!file->basename) |
612 | continue; | |
2f03f956 AT |
613 | /* we need to ensure that any directories we create have writeable |
614 | permissions initially so that we can create the files within | |
615 | them. This is then fixed after the files are transferred */ | |
dfd5ba6a WD |
616 | if (!am_root && S_ISDIR(file->mode) && !(file->mode & S_IWUSR)) { |
617 | copy = *file; | |
2cda2560 WD |
618 | /* XXX: Could this be causing a problem on SCO? Perhaps their |
619 | * handling of permissions is strange? */ | |
dfd5ba6a WD |
620 | copy.mode |= S_IWUSR; /* user write */ |
621 | file = © | |
2f03f956 AT |
622 | } |
623 | ||
3fef5364 | 624 | recv_generator(local_name ? local_name : f_name_to(file, fbuf), |
7daccb8e | 625 | file, i, f_out); |
2f03f956 AT |
626 | } |
627 | ||
628 | phase++; | |
629 | csum_length = SUM_LENGTH; | |
e1f67417 | 630 | ignore_times = 1; |
2f03f956 AT |
631 | |
632 | if (verbose > 2) | |
633 | rprintf(FINFO,"generate_files phase=%d\n",phase); | |
634 | ||
7daccb8e | 635 | write_int(f_out, -1); |
2f03f956 | 636 | |
bc63ae3f S |
637 | /* files can cycle through the system more than once |
638 | * to catch initial checksum errors */ | |
b9b15fb1 | 639 | while ((i = get_redo_num()) != -1) { |
bc63ae3f | 640 | struct file_struct *file = flist->files[i]; |
3fef5364 | 641 | recv_generator(local_name ? local_name : f_name_to(file, fbuf), |
7daccb8e | 642 | file, i, f_out); |
bc63ae3f | 643 | } |
2f03f956 | 644 | |
bc63ae3f S |
645 | phase++; |
646 | if (verbose > 2) | |
647 | rprintf(FINFO,"generate_files phase=%d\n",phase); | |
2f03f956 | 648 | |
7daccb8e | 649 | write_int(f_out, -1); |
6dff5992 WD |
650 | |
651 | if (preserve_hard_links) | |
652 | do_hard_links(); | |
653 | ||
654 | /* now we need to fix any directory permissions that were | |
655 | * modified during the transfer */ | |
656 | for (i = 0; i < flist->count; i++) { | |
657 | struct file_struct *file = flist->files[i]; | |
ec8290c8 WD |
658 | if (!file->basename || !S_ISDIR(file->mode)) |
659 | continue; | |
6dff5992 WD |
660 | recv_generator(local_name ? local_name : f_name(file), |
661 | file, i, -1); | |
662 | } | |
663 | ||
664 | if (verbose > 2) | |
665 | rprintf(FINFO,"generate_files finished\n"); | |
2f03f956 | 666 | } |