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; | |
fa13f396 | 37 | extern int delete_during; |
2f03f956 | 38 | extern int update_only; |
3d6feada | 39 | extern int opt_ignore_existing; |
cd6aa5b5 WD |
40 | extern int inplace; |
41 | extern int make_backups; | |
2f03f956 AT |
42 | extern int csum_length; |
43 | extern int ignore_times; | |
f83f0548 | 44 | extern int size_only; |
7d1bfaf7 | 45 | extern OFF_T max_size; |
2f03f956 | 46 | extern int io_timeout; |
d04e9c51 | 47 | extern int protocol_version; |
2f03f956 | 48 | extern int always_checksum; |
a7260c40 | 49 | extern char *partial_dir; |
b7e8628c | 50 | extern char *basis_dir[]; |
2be2fb3e | 51 | extern int compare_dest; |
59c95e42 | 52 | extern int link_dest; |
5774786f WD |
53 | extern int whole_file; |
54 | extern int local_server; | |
5774786f | 55 | extern int list_only; |
b9f592fb | 56 | extern int read_batch; |
5774786f WD |
57 | extern int only_existing; |
58 | extern int orig_umask; | |
59 | extern int safe_symlinks; | |
a255c592 | 60 | extern long block_size; /* "long" because popt can't set an int32. */ |
2f03f956 | 61 | |
97f9dcae WD |
62 | extern struct exclude_list_struct server_exclude_list; |
63 | ||
b7e8628c | 64 | static int unchanged_attrs(struct file_struct *file, STRUCT_STAT *st) |
2f03f956 | 65 | { |
b7e8628c WD |
66 | if (preserve_perms |
67 | && (st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) | |
84acca07 | 68 | return 0; |
bb24028f | 69 | |
b7e8628c WD |
70 | if (am_root && preserve_uid && st->st_uid != file->uid) |
71 | return 0; | |
bb24028f | 72 | |
b7e8628c WD |
73 | if (preserve_gid && file->gid != GID_NONE && st->st_gid != file->gid) |
74 | return 0; | |
75 | ||
76 | return 1; | |
77 | } | |
78 | ||
79 | /* Perform our quick-check heuristic for determining if a file is unchanged. */ | |
80 | static int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st) | |
81 | { | |
82 | if (st->st_size != file->length) | |
83 | return 0; | |
59c95e42 | 84 | |
2cda2560 | 85 | /* if always checksum is set then we use the checksum instead |
2f03f956 AT |
86 | of the file time to determine whether to sync */ |
87 | if (always_checksum && S_ISREG(st->st_mode)) { | |
88 | char sum[MD4_SUM_LENGTH]; | |
b7e8628c | 89 | file_checksum(fn, sum, st->st_size); |
728d0922 | 90 | return memcmp(sum, file->u.sum, protocol_version < 21 ? 2 |
84acca07 | 91 | : MD4_SUM_LENGTH) == 0; |
2f03f956 AT |
92 | } |
93 | ||
cc1e997d | 94 | if (size_only) |
84acca07 | 95 | return 1; |
2f03f956 | 96 | |
cc1e997d | 97 | if (ignore_times) |
84acca07 | 98 | return 0; |
cc1e997d | 99 | |
84acca07 | 100 | return cmp_modtime(st->st_mtime, file->modtime) == 0; |
2f03f956 AT |
101 | } |
102 | ||
103 | ||
ec8290c8 | 104 | /* |
195bd906 | 105 | * set (initialize) the size entries in the per-file sum_struct |
ec8290c8 | 106 | * calculating dynamic block and checksum sizes. |
195bd906 | 107 | * |
ec8290c8 | 108 | * This is only called from generate_and_send_sums() but is a separate |
195bd906 S |
109 | * function to encapsulate the logic. |
110 | * | |
111 | * The block size is a rounded square root of file length. | |
112 | * | |
113 | * The checksum size is determined according to: | |
114 | * blocksum_bits = BLOCKSUM_EXP + 2*log2(file_len) - log2(block_len) | |
115 | * provided by Donovan Baarda which gives a probability of rsync | |
116 | * algorithm corrupting data and falling back using the whole md4 | |
117 | * checksums. | |
118 | * | |
119 | * This might be made one of several selectable heuristics. | |
120 | */ | |
1490812a | 121 | static void sum_sizes_sqroot(struct sum_struct *sum, int64 len) |
195bd906 | 122 | { |
a255c592 | 123 | int32 blength; |
da9d12f5 | 124 | int s2length; |
195bd906 | 125 | |
a255c592 | 126 | if (block_size) |
195bd906 | 127 | blength = block_size; |
a255c592 | 128 | else if (len <= BLOCK_SIZE * BLOCK_SIZE) |
195bd906 | 129 | blength = BLOCK_SIZE; |
a255c592 WD |
130 | else { |
131 | int32 c; | |
1490812a | 132 | int64 l; |
eae7165c WD |
133 | int cnt; |
134 | for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {} | |
135 | if (cnt >= 31 || c >= MAX_BLOCK_SIZE) | |
136 | blength = MAX_BLOCK_SIZE; | |
137 | else { | |
138 | blength = 0; | |
139 | do { | |
140 | blength |= c; | |
1490812a | 141 | if (len < (int64)blength * blength) |
eae7165c WD |
142 | blength &= ~c; |
143 | c >>= 1; | |
144 | } while (c >= 8); /* round to multiple of 8 */ | |
145 | blength = MAX(blength, BLOCK_SIZE); | |
195bd906 | 146 | } |
195bd906 S |
147 | } |
148 | ||
d04e9c51 | 149 | if (protocol_version < 27) { |
195bd906 S |
150 | s2length = csum_length; |
151 | } else if (csum_length == SUM_LENGTH) { | |
152 | s2length = SUM_LENGTH; | |
153 | } else { | |
a255c592 | 154 | int32 c; |
1490812a | 155 | int64 l; |
da9d12f5 | 156 | int b = BLOCKSUM_BIAS; |
a255c592 WD |
157 | for (l = len; l >>= 1; b += 2) {} |
158 | for (c = blength; c >>= 1 && b; b--) {} | |
159 | /* add a bit, subtract rollsum, round up. */ | |
160 | s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */ | |
195bd906 S |
161 | s2length = MAX(s2length, csum_length); |
162 | s2length = MIN(s2length, SUM_LENGTH); | |
163 | } | |
164 | ||
165 | sum->flength = len; | |
166 | sum->blength = blength; | |
167 | sum->s2length = s2length; | |
168 | sum->count = (len + (blength - 1)) / blength; | |
169 | sum->remainder = (len % blength); | |
170 | ||
171 | if (sum->count && verbose > 2) { | |
a255c592 WD |
172 | rprintf(FINFO, |
173 | "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n", | |
174 | (double)sum->count, (long)sum->remainder, (long)sum->blength, | |
da9d12f5 | 175 | sum->s2length, (double)sum->flength); |
195bd906 S |
176 | } |
177 | } | |
80605142 | 178 | |
bceec82f | 179 | |
80605142 WD |
180 | /* |
181 | * Generate and send a stream of signatures/checksums that describe a buffer | |
e66dfd18 | 182 | * |
80605142 WD |
183 | * Generate approximately one checksum every block_len bytes. |
184 | */ | |
cd6aa5b5 | 185 | static void generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy) |
2f03f956 | 186 | { |
80605142 | 187 | size_t i; |
6e45e1dd | 188 | struct map_struct *mapbuf; |
80605142 | 189 | struct sum_struct sum; |
2f03f956 AT |
190 | OFF_T offset = 0; |
191 | ||
423dba8e | 192 | sum_sizes_sqroot(&sum, len); |
e66dfd18 | 193 | |
6e45e1dd | 194 | if (len > 0) |
96d910c7 | 195 | mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength); |
6e45e1dd WD |
196 | else |
197 | mapbuf = NULL; | |
198 | ||
fc0257c9 | 199 | write_sum_head(f_out, &sum); |
2f03f956 | 200 | |
80605142 | 201 | for (i = 0; i < sum.count; i++) { |
a255c592 | 202 | int32 n1 = (int32)MIN(len, (OFF_T)sum.blength); |
6e45e1dd | 203 | char *map = map_ptr(mapbuf, offset, n1); |
80605142 WD |
204 | uint32 sum1 = get_checksum1(map, n1); |
205 | char sum2[SUM_LENGTH]; | |
2f03f956 | 206 | |
cd6aa5b5 WD |
207 | if (f_copy >= 0) |
208 | full_write(f_copy, map, n1); | |
209 | ||
80605142 | 210 | get_checksum2(map, n1, sum2); |
2f03f956 | 211 | |
80605142 | 212 | if (verbose > 3) { |
e66dfd18 | 213 | rprintf(FINFO, |
a255c592 WD |
214 | "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n", |
215 | (double)i, (double)offset, (long)n1, | |
0e36d9da | 216 | (unsigned long)sum1); |
80605142 WD |
217 | } |
218 | write_int(f_out, sum1); | |
fc0257c9 | 219 | write_buf(f_out, sum2, sum.s2length); |
2f03f956 AT |
220 | len -= n1; |
221 | offset += n1; | |
222 | } | |
6e45e1dd WD |
223 | |
224 | if (mapbuf) | |
225 | unmap_file(mapbuf); | |
2f03f956 AT |
226 | } |
227 | ||
228 | ||
fd322eef | 229 | /* |
420ef2c4 | 230 | * Acts on file number @p i from @p flist, whose name is @p fname. |
ef1aa910 MP |
231 | * |
232 | * First fixes up permissions, then generates checksums for the file. | |
233 | * | |
420ef2c4 MP |
234 | * @note This comment was added later by mbp who was trying to work it |
235 | * out. It might be wrong. | |
fd322eef | 236 | */ |
fa13f396 WD |
237 | static void recv_generator(char *fname, struct file_list *flist, |
238 | struct file_struct *file, int i, | |
41cfde6b | 239 | int f_out, int f_out_name) |
2cda2560 | 240 | { |
41cfde6b | 241 | int fd = -1, f_copy = -1; |
89f7eff3 | 242 | STRUCT_STAT st, partial_st; |
41cfde6b | 243 | struct file_struct *back_file = NULL; |
e7d13fe5 | 244 | int statret, stat_errno; |
41cfde6b | 245 | char *fnamecmp, *partialptr, *backupptr = NULL; |
375a4556 | 246 | char fnamecmpbuf[MAXPATHLEN]; |
41cfde6b | 247 | uchar fnamecmp_type; |
f7632fc6 | 248 | |
dfd5ba6a WD |
249 | if (list_only) |
250 | return; | |
2f03f956 AT |
251 | |
252 | if (verbose > 2) | |
ecc81fce | 253 | rprintf(FINFO, "recv_generator(%s,%d)\n", safe_fname(fname), i); |
2f03f956 | 254 | |
97f9dcae WD |
255 | if (server_exclude_list.head |
256 | && check_exclude(&server_exclude_list, fname, | |
3e35c34b WD |
257 | S_ISDIR(file->mode)) < 0) { |
258 | if (verbose) { | |
259 | rprintf(FINFO, "skipping server-excluded file \"%s\"\n", | |
ecc81fce | 260 | safe_fname(fname)); |
3e35c34b | 261 | } |
97f9dcae | 262 | return; |
3e35c34b | 263 | } |
97f9dcae | 264 | |
73f7af0e WD |
265 | if (dry_run > 1) { |
266 | statret = -1; | |
267 | stat_errno = ENOENT; | |
268 | } else { | |
269 | statret = link_stat(fname, &st, | |
270 | keep_dirlinks && S_ISDIR(file->mode)); | |
271 | stat_errno = errno; | |
272 | } | |
63787382 | 273 | |
a7260c40 | 274 | if (only_existing && statret == -1 && stat_errno == ENOENT) { |
1347d512 | 275 | /* we only want to update existing files */ |
ecc81fce WD |
276 | if (verbose > 1) { |
277 | rprintf(FINFO, "not creating new file \"%s\"\n", | |
278 | safe_fname(fname)); | |
279 | } | |
1347d512 AT |
280 | return; |
281 | } | |
282 | ||
d9b4d267 WD |
283 | if (statret == 0 && !preserve_perms |
284 | && S_ISDIR(st.st_mode) == S_ISDIR(file->mode)) { | |
4df9f368 | 285 | /* if the file exists already and we aren't perserving |
2cda2560 WD |
286 | * permissions then act as though the remote end sent |
287 | * us the file permissions we already have */ | |
67e78a82 WD |
288 | file->mode = (file->mode & ~CHMOD_BITS) |
289 | | (st.st_mode & CHMOD_BITS); | |
4df9f368 AT |
290 | } |
291 | ||
2f03f956 | 292 | if (S_ISDIR(file->mode)) { |
2cda2560 WD |
293 | /* The file to be received is a directory, so we need |
294 | * to prepare appropriately. If there is already a | |
295 | * file of that name and it is *not* a directory, then | |
296 | * we need to delete it. If it doesn't exist, then | |
027428eb | 297 | * (perhaps recursively) create it. */ |
2f03f956 | 298 | if (statret == 0 && !S_ISDIR(st.st_mode)) { |
7e38410e | 299 | delete_file(fname, DEL_TERSE); |
2f03f956 AT |
300 | statret = -1; |
301 | } | |
302 | if (statret != 0 && do_mkdir(fname,file->mode) != 0 && errno != EEXIST) { | |
027428eb WD |
303 | if (!relative_paths || errno != ENOENT |
304 | || create_directory_path(fname, orig_umask) < 0 | |
305 | || do_mkdir(fname, file->mode) < 0) { | |
d62bcc17 WD |
306 | rsyserr(FERROR, errno, |
307 | "recv_generator: mkdir %s failed", | |
308 | full_fname(fname)); | |
2f03f956 AT |
309 | } |
310 | } | |
716e73d4 WD |
311 | /* f_out is set to -1 when doing final directory-permission |
312 | * and modification-time repair. */ | |
313 | if (set_perms(fname, file, statret ? NULL : &st, 0) | |
314 | && verbose && f_out != -1) | |
ecc81fce | 315 | rprintf(FINFO, "%s/\n", safe_fname(fname)); |
fa13f396 WD |
316 | if (delete_during && f_out != -1 |
317 | && (file->flags & FLAG_DEL_START)) | |
318 | delete_in_dir(flist, fname); | |
2f03f956 | 319 | return; |
7d1bfaf7 WD |
320 | } else if (max_size && file->length > max_size) { |
321 | if (verbose > 1) | |
322 | rprintf(FINFO, "%s is over max-size\n", fname); | |
323 | return; | |
2f03f956 AT |
324 | } |
325 | ||
326 | if (preserve_links && S_ISLNK(file->mode)) { | |
327 | #if SUPPORT_LINKS | |
728d0922 | 328 | if (safe_symlinks && unsafe_symlink(file->u.link, fname)) { |
2f03f956 | 329 | if (verbose) { |
ea42541f | 330 | rprintf(FINFO, "ignoring unsafe symlink %s -> \"%s\"\n", |
728d0922 | 331 | full_fname(fname), file->u.link); |
2f03f956 AT |
332 | } |
333 | return; | |
334 | } | |
335 | if (statret == 0) { | |
7e38410e WD |
336 | int dflag = S_ISDIR(st.st_mode) ? DEL_DIR : 0; |
337 | char lnk[MAXPATHLEN]; | |
338 | int len; | |
339 | ||
340 | if (!dflag | |
341 | && (len = readlink(fname, lnk, MAXPATHLEN-1)) > 0) { | |
342 | lnk[len] = 0; | |
85d4d142 MP |
343 | /* A link already pointing to the |
344 | * right place -- no further action | |
345 | * required. */ | |
7e38410e | 346 | if (strcmp(lnk, file->u.link) == 0) { |
c41b52c4 WD |
347 | set_perms(fname, file, &st, |
348 | PERMS_REPORT); | |
2f03f956 AT |
349 | return; |
350 | } | |
2cda2560 | 351 | } |
7e38410e WD |
352 | /* Not the right symlink (or not a symlink), so |
353 | * delete it. */ | |
354 | delete_file(fname, dflag | DEL_TERSE); | |
2f03f956 | 355 | } |
728d0922 | 356 | if (do_symlink(file->u.link,fname) != 0) { |
d62bcc17 | 357 | rsyserr(FERROR, errno, "symlink %s -> \"%s\" failed", |
ecc81fce | 358 | full_fname(fname), safe_fname(file->u.link)); |
2f03f956 AT |
359 | } else { |
360 | set_perms(fname,file,NULL,0); | |
361 | if (verbose) { | |
ecc81fce WD |
362 | rprintf(FINFO, "%s -> %s\n", safe_fname(fname), |
363 | safe_fname(file->u.link)); | |
2f03f956 AT |
364 | } |
365 | } | |
366 | #endif | |
367 | return; | |
368 | } | |
369 | ||
2f03f956 | 370 | if (am_root && preserve_devices && IS_DEVICE(file->mode)) { |
2cda2560 | 371 | if (statret != 0 || |
2f03f956 | 372 | st.st_mode != file->mode || |
3915fd75 | 373 | st.st_rdev != file->u.rdev) { |
7e38410e WD |
374 | int dflag = S_ISDIR(st.st_mode) ? DEL_DIR : 0; |
375 | delete_file(fname, dflag | DEL_TERSE); | |
d62bcc17 | 376 | if (verbose > 2) { |
2f03f956 | 377 | rprintf(FINFO,"mknod(%s,0%o,0x%x)\n", |
ecc81fce WD |
378 | safe_fname(fname), |
379 | (int)file->mode, (int)file->u.rdev); | |
d62bcc17 | 380 | } |
728d0922 | 381 | if (do_mknod(fname,file->mode,file->u.rdev) != 0) { |
d62bcc17 WD |
382 | rsyserr(FERROR, errno, "mknod %s failed", |
383 | full_fname(fname)); | |
2f03f956 AT |
384 | } else { |
385 | set_perms(fname,file,NULL,0); | |
ecc81fce WD |
386 | if (verbose) { |
387 | rprintf(FINFO, "%s\n", | |
388 | safe_fname(fname)); | |
389 | } | |
2f03f956 AT |
390 | } |
391 | } else { | |
c41b52c4 | 392 | set_perms(fname, file, &st, PERMS_REPORT); |
2f03f956 AT |
393 | } |
394 | return; | |
395 | } | |
2f03f956 | 396 | |
6dff5992 | 397 | if (preserve_hard_links && hard_link_check(file, HL_CHECK_MASTER)) |
2f03f956 | 398 | return; |
2f03f956 AT |
399 | |
400 | if (!S_ISREG(file->mode)) { | |
ecc81fce WD |
401 | rprintf(FINFO, "skipping non-regular file \"%s\"\n", |
402 | safe_fname(fname)); | |
2f03f956 AT |
403 | return; |
404 | } | |
405 | ||
375a4556 | 406 | fnamecmp = fname; |
41cfde6b | 407 | fnamecmp_type = FNAMECMP_FNAME; |
375a4556 | 408 | |
b7e8628c WD |
409 | if (statret == -1 && basis_dir[0] != NULL) { |
410 | int fallback_match = -1; | |
411 | int match_level = 0; | |
412 | int i = 0; | |
413 | do { | |
414 | pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, | |
415 | basis_dir[i], fname); | |
416 | if (link_stat(fnamecmpbuf, &st, 0) == 0 | |
417 | && S_ISREG(st.st_mode)) { | |
418 | statret = 0; | |
419 | if (link_dest) { | |
420 | if (!match_level) { | |
421 | fallback_match = i; | |
422 | match_level = 1; | |
423 | } else if (match_level == 2 | |
424 | && !unchanged_attrs(file, &st)) | |
425 | continue; | |
426 | if (!unchanged_file(fnamecmpbuf, file, &st)) | |
427 | continue; | |
428 | fallback_match = i; | |
429 | match_level = 2; | |
430 | if (!unchanged_attrs(file, &st)) | |
431 | continue; | |
432 | } | |
433 | match_level = 3; | |
434 | break; | |
435 | } | |
436 | } while (basis_dir[++i] != NULL); | |
437 | if (statret == 0) { | |
438 | if (match_level < 3) { | |
439 | i = fallback_match; | |
440 | pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, | |
441 | basis_dir[i], fname); | |
442 | } | |
59c95e42 | 443 | #if HAVE_LINK |
b7e8628c | 444 | if (link_dest && match_level == 3 && !dry_run) { |
e7d13fe5 WD |
445 | if (do_link(fnamecmpbuf, fname) < 0) { |
446 | if (verbose) { | |
447 | rsyserr(FINFO, errno, | |
448 | "link %s => %s", | |
449 | fnamecmpbuf, | |
450 | safe_fname(fname)); | |
451 | } | |
452 | fnamecmp = fnamecmpbuf; | |
2be2fb3e | 453 | fnamecmp_type = i; |
e7bc9b64 | 454 | } |
e7d13fe5 | 455 | } else |
59c95e42 | 456 | #endif |
41cfde6b | 457 | { |
e7d13fe5 | 458 | fnamecmp = fnamecmpbuf; |
2be2fb3e | 459 | fnamecmp_type = i; |
41cfde6b | 460 | } |
e7d13fe5 WD |
461 | } |
462 | } | |
463 | ||
464 | if (statret == 0 && !S_ISREG(st.st_mode)) { | |
7e38410e WD |
465 | int dflag = S_ISDIR(st.st_mode) ? DEL_DIR : 0; |
466 | if (delete_file(fname, dflag | DEL_TERSE) != 0) | |
e7d13fe5 WD |
467 | return; |
468 | statret = -1; | |
469 | stat_errno = ENOENT; | |
375a4556 DD |
470 | } |
471 | ||
9d954dca | 472 | if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL |
72c19bb3 WD |
473 | && link_stat(partialptr, &partial_st, 0) == 0 |
474 | && S_ISREG(partial_st.st_mode)) { | |
475 | if (statret == -1) | |
476 | goto prepare_to_open; | |
477 | } else | |
478 | partialptr = NULL; | |
89f7eff3 | 479 | |
2f03f956 | 480 | if (statret == -1) { |
6dff5992 WD |
481 | if (preserve_hard_links && hard_link_check(file, HL_SKIP)) |
482 | return; | |
41cfde6b WD |
483 | if (stat_errno == ENOENT) |
484 | goto notify_others; | |
485 | if (verbose > 1) { | |
e7d13fe5 WD |
486 | rsyserr(FERROR, stat_errno, |
487 | "recv_generator: failed to stat %s", | |
d62bcc17 | 488 | full_fname(fname)); |
2f03f956 AT |
489 | } |
490 | return; | |
491 | } | |
492 | ||
41cfde6b | 493 | if (opt_ignore_existing && fnamecmp_type == FNAMECMP_FNAME) { |
3d6feada | 494 | if (verbose > 1) |
ecc81fce | 495 | rprintf(FINFO, "%s exists\n", safe_fname(fname)); |
3d6feada | 496 | return; |
2cda2560 | 497 | } |
3d6feada | 498 | |
41cfde6b | 499 | if (update_only && fnamecmp_type == FNAMECMP_FNAME |
d3a4375f | 500 | && cmp_modtime(st.st_mtime, file->modtime) > 0) { |
2f03f956 | 501 | if (verbose > 1) |
ecc81fce | 502 | rprintf(FINFO, "%s is newer\n", safe_fname(fname)); |
2f03f956 AT |
503 | return; |
504 | } | |
505 | ||
2be2fb3e | 506 | if (!compare_dest && fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH) |
b7e8628c WD |
507 | ; |
508 | else if (unchanged_file(fnamecmp, file, &st)) { | |
41cfde6b | 509 | if (fnamecmp_type == FNAMECMP_FNAME) |
c41b52c4 | 510 | set_perms(fname, file, &st, PERMS_REPORT); |
2f03f956 AT |
511 | return; |
512 | } | |
513 | ||
89f7eff3 | 514 | prepare_to_open: |
9d954dca WD |
515 | if (partialptr) { |
516 | st = partial_st; | |
517 | fnamecmp = partialptr; | |
518 | fnamecmp_type = FNAMECMP_PARTIAL_DIR; | |
519 | statret = 0; | |
520 | } | |
521 | ||
41cfde6b WD |
522 | if (dry_run || whole_file > 0) { |
523 | statret = -1; | |
524 | goto notify_others; | |
2f03f956 | 525 | } |
41cfde6b WD |
526 | if (read_batch) |
527 | goto notify_others; | |
2f03f956 | 528 | |
2cda2560 | 529 | /* open the file */ |
8c9fd200 | 530 | fd = do_open(fnamecmp, O_RDONLY, 0); |
2f03f956 AT |
531 | |
532 | if (fd == -1) { | |
d62bcc17 WD |
533 | rsyserr(FERROR, errno, "failed to open %s, continuing", |
534 | full_fname(fnamecmp)); | |
cd6aa5b5 | 535 | pretend_missing: |
60be6acf | 536 | /* pretend the file didn't exist */ |
6dff5992 WD |
537 | if (preserve_hard_links && hard_link_check(file, HL_SKIP)) |
538 | return; | |
41cfde6b WD |
539 | statret = -1; |
540 | goto notify_others; | |
2f03f956 AT |
541 | } |
542 | ||
cd6aa5b5 WD |
543 | if (inplace && make_backups) { |
544 | if (!(backupptr = get_backup_name(fname))) { | |
545 | close(fd); | |
546 | return; | |
547 | } | |
548 | if (!(back_file = make_file(fname, NULL, NO_EXCLUDES))) { | |
549 | close(fd); | |
550 | goto pretend_missing; | |
551 | } | |
552 | if (robust_unlink(backupptr) && errno != ENOENT) { | |
553 | rsyserr(FERROR, errno, "unlink %s", | |
554 | full_fname(backupptr)); | |
555 | free(back_file); | |
556 | close(fd); | |
557 | return; | |
558 | } | |
559 | if ((f_copy = do_open(backupptr, | |
560 | O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) { | |
561 | rsyserr(FERROR, errno, "open %s", | |
562 | full_fname(backupptr)); | |
563 | free(back_file); | |
564 | close(fd); | |
565 | return; | |
566 | } | |
41cfde6b | 567 | fnamecmp_type = FNAMECMP_BACKUP; |
cd6aa5b5 WD |
568 | } |
569 | ||
dfd5ba6a | 570 | if (verbose > 3) { |
ecc81fce WD |
571 | rprintf(FINFO, "gen mapped %s of size %.0f\n", |
572 | safe_fname(fnamecmp), (double)st.st_size); | |
dfd5ba6a | 573 | } |
2f03f956 | 574 | |
2f03f956 | 575 | if (verbose > 2) |
80605142 | 576 | rprintf(FINFO, "generating and sending sums for %d\n", i); |
2f03f956 | 577 | |
41cfde6b WD |
578 | notify_others: |
579 | write_int(f_out, i); | |
17b5b32f WD |
580 | if (protocol_version >= 29 && inplace && !read_batch) |
581 | write_byte(f_out, fnamecmp_type); | |
41cfde6b WD |
582 | if (f_out_name >= 0) |
583 | write_byte(f_out_name, fnamecmp_type); | |
cd6aa5b5 | 584 | |
41cfde6b WD |
585 | if (dry_run || read_batch) |
586 | return; | |
587 | ||
588 | if (statret == 0) { | |
589 | generate_and_send_sums(fd, st.st_size, f_out, f_copy); | |
2f03f956 | 590 | |
41cfde6b WD |
591 | if (f_copy >= 0) { |
592 | close(f_copy); | |
593 | set_perms(backupptr, back_file, NULL, 0); | |
594 | if (verbose > 1) { | |
595 | rprintf(FINFO, "backed up %s to %s\n", | |
596 | fname, backupptr); | |
597 | } | |
598 | free(back_file); | |
599 | } | |
600 | ||
601 | close(fd); | |
602 | } else | |
603 | write_sum_head(f_out, NULL); | |
2f03f956 AT |
604 | } |
605 | ||
606 | ||
41cfde6b WD |
607 | void generate_files(int f_out, struct file_list *flist, char *local_name, |
608 | int f_out_name) | |
2f03f956 AT |
609 | { |
610 | int i; | |
e1f67417 | 611 | int phase = 0; |
968c8030 | 612 | char fbuf[MAXPATHLEN]; |
2f03f956 | 613 | |
45e08edb WD |
614 | if (verbose > 2) { |
615 | rprintf(FINFO, "generator starting pid=%ld count=%d\n", | |
616 | (long)getpid(), flist->count); | |
617 | } | |
2f03f956 | 618 | |
3e7053ac MP |
619 | if (verbose >= 2) { |
620 | rprintf(FINFO, | |
f38bd4a0 | 621 | whole_file > 0 |
3e7053ac MP |
622 | ? "delta-transmission disabled for local transfer or --whole-file\n" |
623 | : "delta transmission enabled\n"); | |
624 | } | |
2cda2560 | 625 | |
a57873b7 AT |
626 | /* we expect to just sit around now, so don't exit on a |
627 | timeout. If we really get a timeout then the other process should | |
628 | exit */ | |
629 | io_timeout = 0; | |
630 | ||
2f03f956 AT |
631 | for (i = 0; i < flist->count; i++) { |
632 | struct file_struct *file = flist->files[i]; | |
dfd5ba6a | 633 | struct file_struct copy; |
2f03f956 | 634 | |
dfd5ba6a WD |
635 | if (!file->basename) |
636 | continue; | |
2f03f956 AT |
637 | /* we need to ensure that any directories we create have writeable |
638 | permissions initially so that we can create the files within | |
639 | them. This is then fixed after the files are transferred */ | |
dfd5ba6a WD |
640 | if (!am_root && S_ISDIR(file->mode) && !(file->mode & S_IWUSR)) { |
641 | copy = *file; | |
2cda2560 WD |
642 | /* XXX: Could this be causing a problem on SCO? Perhaps their |
643 | * handling of permissions is strange? */ | |
dfd5ba6a WD |
644 | copy.mode |= S_IWUSR; /* user write */ |
645 | file = © | |
2f03f956 AT |
646 | } |
647 | ||
3fef5364 | 648 | recv_generator(local_name ? local_name : f_name_to(file, fbuf), |
fa13f396 | 649 | flist, file, i, f_out, f_out_name); |
2f03f956 AT |
650 | } |
651 | ||
652 | phase++; | |
653 | csum_length = SUM_LENGTH; | |
e1f67417 | 654 | ignore_times = 1; |
2f03f956 AT |
655 | |
656 | if (verbose > 2) | |
657 | rprintf(FINFO,"generate_files phase=%d\n",phase); | |
658 | ||
7daccb8e | 659 | write_int(f_out, -1); |
2f03f956 | 660 | |
bc63ae3f S |
661 | /* files can cycle through the system more than once |
662 | * to catch initial checksum errors */ | |
b9b15fb1 | 663 | while ((i = get_redo_num()) != -1) { |
bc63ae3f | 664 | struct file_struct *file = flist->files[i]; |
3fef5364 | 665 | recv_generator(local_name ? local_name : f_name_to(file, fbuf), |
fa13f396 | 666 | flist, file, i, f_out, f_out_name); |
bc63ae3f | 667 | } |
2f03f956 | 668 | |
bc63ae3f S |
669 | phase++; |
670 | if (verbose > 2) | |
671 | rprintf(FINFO,"generate_files phase=%d\n",phase); | |
2f03f956 | 672 | |
7daccb8e | 673 | write_int(f_out, -1); |
6dff5992 | 674 | |
b0da4b23 WD |
675 | /* Read post-redo-phase MSG_DONE and any prior messages. */ |
676 | get_redo_num(); | |
677 | ||
6dff5992 WD |
678 | if (preserve_hard_links) |
679 | do_hard_links(); | |
680 | ||
681 | /* now we need to fix any directory permissions that were | |
682 | * modified during the transfer */ | |
683 | for (i = 0; i < flist->count; i++) { | |
684 | struct file_struct *file = flist->files[i]; | |
ec8290c8 WD |
685 | if (!file->basename || !S_ISDIR(file->mode)) |
686 | continue; | |
6dff5992 | 687 | recv_generator(local_name ? local_name : f_name(file), |
fa13f396 | 688 | flist, file, i, -1, -1); |
6dff5992 WD |
689 | } |
690 | ||
691 | if (verbose > 2) | |
692 | rprintf(FINFO,"generate_files finished\n"); | |
2f03f956 | 693 | } |