Commit | Line | Data |
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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; | |
b78296cb | 28 | extern int itemize_changes; |
2f03f956 | 29 | extern int relative_paths; |
716e73d4 | 30 | extern int keep_dirlinks; |
2f03f956 AT |
31 | extern int preserve_links; |
32 | extern int am_root; | |
33 | extern int preserve_devices; | |
34 | extern int preserve_hard_links; | |
6744b62d WD |
35 | extern int preserve_perms; |
36 | extern int preserve_uid; | |
37 | extern int preserve_gid; | |
3ea9bbd6 WD |
38 | extern int preserve_times; |
39 | extern int omit_dir_times; | |
fa13f396 | 40 | extern int delete_during; |
2f03f956 | 41 | extern int update_only; |
3d6feada | 42 | extern int opt_ignore_existing; |
cd6aa5b5 WD |
43 | extern int inplace; |
44 | extern int make_backups; | |
2f03f956 AT |
45 | extern int csum_length; |
46 | extern int ignore_times; | |
f83f0548 | 47 | extern int size_only; |
7d1bfaf7 | 48 | extern OFF_T max_size; |
2f03f956 | 49 | extern int io_timeout; |
d04e9c51 | 50 | extern int protocol_version; |
8e85be0a | 51 | extern int fuzzy_basis; |
2f03f956 | 52 | extern int always_checksum; |
a7260c40 | 53 | extern char *partial_dir; |
b7e8628c | 54 | extern char *basis_dir[]; |
2be2fb3e | 55 | extern int compare_dest; |
59c95e42 | 56 | extern int link_dest; |
5774786f WD |
57 | extern int whole_file; |
58 | extern int local_server; | |
5774786f | 59 | extern int list_only; |
b9f592fb | 60 | extern int read_batch; |
5774786f WD |
61 | extern int only_existing; |
62 | extern int orig_umask; | |
63 | extern int safe_symlinks; | |
a255c592 | 64 | extern long block_size; /* "long" because popt can't set an int32. */ |
2f03f956 | 65 | |
7842418b | 66 | extern struct filter_list_struct server_filter_list; |
97f9dcae | 67 | |
b7e8628c | 68 | static int unchanged_attrs(struct file_struct *file, STRUCT_STAT *st) |
2f03f956 | 69 | { |
b7e8628c WD |
70 | if (preserve_perms |
71 | && (st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) | |
84acca07 | 72 | return 0; |
bb24028f | 73 | |
b7e8628c WD |
74 | if (am_root && preserve_uid && st->st_uid != file->uid) |
75 | return 0; | |
bb24028f | 76 | |
b7e8628c WD |
77 | if (preserve_gid && file->gid != GID_NONE && st->st_gid != file->gid) |
78 | return 0; | |
79 | ||
80 | return 1; | |
81 | } | |
82 | ||
06a1dbad WD |
83 | |
84 | #define SC_CHECKSUM_CHANGED (1<<0) | |
85 | #define SC_SYMLINK_CHANGED (1<<1) | |
86 | #define SC_SENDING_FILE (1<<2) | |
87 | #define SC_NO_BASIS (1<<3) | |
88 | #define SC_NO_NL (1<<4) | |
89 | ||
90 | static void showchg(const char *fname, struct file_struct *file, int statret, | |
91 | STRUCT_STAT *st, int flags) | |
92 | { | |
93 | static char ch[] = "*XcstpogDL"; | |
94 | int keep_time; | |
95 | char *s; | |
96 | ||
97 | ch[0] = flags & SC_SENDING_FILE ? '*' : ' '; | |
98 | ch[1] = S_ISDIR(file->mode) ? 'd' : IS_DEVICE(file->mode) ? 'D' | |
99 | : S_ISLNK(file->mode) ? 'L' : 'f'; | |
100 | ||
101 | if (statret < 0) { | |
102 | for (s = ch + 2; *s; ) *s++ = '+'; | |
103 | goto print_it; | |
104 | } | |
105 | ||
106 | keep_time = !preserve_times ? 0 | |
107 | : S_ISDIR(file->mode) ? !omit_dir_times : !S_ISLNK(file->mode); | |
108 | ||
109 | ch[2] = !(flags & SC_CHECKSUM_CHANGED) ? '-' : 'c'; | |
110 | ch[3] = !S_ISREG(file->mode) || file->length == st->st_size ? '-' : 's'; | |
111 | ch[4] = flags & SC_SENDING_FILE && !keep_time ? 'T' | |
112 | : !keep_time || file->modtime == st->st_mtime ? '-' : 't'; | |
113 | ch[5] = !preserve_perms || file->mode == st->st_mode ? '-' : 'p'; | |
114 | ch[6] = !am_root || !preserve_uid || file->uid == st->st_uid ? '-' : 'o'; | |
115 | ch[7] = preserve_gid && file->gid != GID_NONE && st->st_gid != file->gid ? 'g' : '-'; | |
116 | ch[8] = IS_DEVICE(file->mode) && file->u.rdev != st->st_rdev ? 'D' : '-'; | |
117 | ch[9] = flags & SC_SYMLINK_CHANGED ? 'L' : '-'; | |
118 | ||
119 | if (flags & SC_NO_BASIS) | |
120 | ch[4] = ch[5] = ch[6] = ch[7] = '-'; | |
121 | ||
122 | s = ch + 2; | |
123 | if (!(flags & SC_SENDING_FILE)) | |
124 | while (*s == '-') s++; | |
125 | if (*s) { | |
126 | print_it: | |
69864a5c | 127 | rprintf(FINFO, "%s %s%s%s", ch, safe_fname(fname), |
06a1dbad WD |
128 | ch[1] == 'd' ? "/" : "", |
129 | flags & SC_NO_NL ? "" : "\n"); | |
130 | } | |
131 | } | |
132 | ||
133 | ||
b7e8628c WD |
134 | /* Perform our quick-check heuristic for determining if a file is unchanged. */ |
135 | static int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st) | |
136 | { | |
137 | if (st->st_size != file->length) | |
138 | return 0; | |
59c95e42 | 139 | |
2cda2560 | 140 | /* if always checksum is set then we use the checksum instead |
2f03f956 AT |
141 | of the file time to determine whether to sync */ |
142 | if (always_checksum && S_ISREG(st->st_mode)) { | |
143 | char sum[MD4_SUM_LENGTH]; | |
b7e8628c | 144 | file_checksum(fn, sum, st->st_size); |
728d0922 | 145 | return memcmp(sum, file->u.sum, protocol_version < 21 ? 2 |
84acca07 | 146 | : MD4_SUM_LENGTH) == 0; |
2f03f956 AT |
147 | } |
148 | ||
cc1e997d | 149 | if (size_only) |
84acca07 | 150 | return 1; |
2f03f956 | 151 | |
cc1e997d | 152 | if (ignore_times) |
84acca07 | 153 | return 0; |
cc1e997d | 154 | |
84acca07 | 155 | return cmp_modtime(st->st_mtime, file->modtime) == 0; |
2f03f956 AT |
156 | } |
157 | ||
158 | ||
ec8290c8 | 159 | /* |
195bd906 | 160 | * set (initialize) the size entries in the per-file sum_struct |
ec8290c8 | 161 | * calculating dynamic block and checksum sizes. |
195bd906 | 162 | * |
ec8290c8 | 163 | * This is only called from generate_and_send_sums() but is a separate |
195bd906 S |
164 | * function to encapsulate the logic. |
165 | * | |
166 | * The block size is a rounded square root of file length. | |
167 | * | |
168 | * The checksum size is determined according to: | |
169 | * blocksum_bits = BLOCKSUM_EXP + 2*log2(file_len) - log2(block_len) | |
170 | * provided by Donovan Baarda which gives a probability of rsync | |
171 | * algorithm corrupting data and falling back using the whole md4 | |
172 | * checksums. | |
173 | * | |
174 | * This might be made one of several selectable heuristics. | |
175 | */ | |
1490812a | 176 | static void sum_sizes_sqroot(struct sum_struct *sum, int64 len) |
195bd906 | 177 | { |
a255c592 | 178 | int32 blength; |
da9d12f5 | 179 | int s2length; |
195bd906 | 180 | |
a255c592 | 181 | if (block_size) |
195bd906 | 182 | blength = block_size; |
a255c592 | 183 | else if (len <= BLOCK_SIZE * BLOCK_SIZE) |
195bd906 | 184 | blength = BLOCK_SIZE; |
a255c592 WD |
185 | else { |
186 | int32 c; | |
1490812a | 187 | int64 l; |
eae7165c WD |
188 | int cnt; |
189 | for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {} | |
190 | if (cnt >= 31 || c >= MAX_BLOCK_SIZE) | |
191 | blength = MAX_BLOCK_SIZE; | |
192 | else { | |
193 | blength = 0; | |
194 | do { | |
195 | blength |= c; | |
1490812a | 196 | if (len < (int64)blength * blength) |
eae7165c WD |
197 | blength &= ~c; |
198 | c >>= 1; | |
199 | } while (c >= 8); /* round to multiple of 8 */ | |
200 | blength = MAX(blength, BLOCK_SIZE); | |
195bd906 | 201 | } |
195bd906 S |
202 | } |
203 | ||
d04e9c51 | 204 | if (protocol_version < 27) { |
195bd906 S |
205 | s2length = csum_length; |
206 | } else if (csum_length == SUM_LENGTH) { | |
207 | s2length = SUM_LENGTH; | |
208 | } else { | |
a255c592 | 209 | int32 c; |
1490812a | 210 | int64 l; |
da9d12f5 | 211 | int b = BLOCKSUM_BIAS; |
a255c592 WD |
212 | for (l = len; l >>= 1; b += 2) {} |
213 | for (c = blength; c >>= 1 && b; b--) {} | |
214 | /* add a bit, subtract rollsum, round up. */ | |
215 | s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */ | |
195bd906 S |
216 | s2length = MAX(s2length, csum_length); |
217 | s2length = MIN(s2length, SUM_LENGTH); | |
218 | } | |
219 | ||
220 | sum->flength = len; | |
221 | sum->blength = blength; | |
222 | sum->s2length = s2length; | |
223 | sum->count = (len + (blength - 1)) / blength; | |
224 | sum->remainder = (len % blength); | |
225 | ||
226 | if (sum->count && verbose > 2) { | |
a255c592 WD |
227 | rprintf(FINFO, |
228 | "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n", | |
229 | (double)sum->count, (long)sum->remainder, (long)sum->blength, | |
da9d12f5 | 230 | sum->s2length, (double)sum->flength); |
195bd906 S |
231 | } |
232 | } | |
80605142 | 233 | |
bceec82f | 234 | |
80605142 WD |
235 | /* |
236 | * Generate and send a stream of signatures/checksums that describe a buffer | |
e66dfd18 | 237 | * |
80605142 WD |
238 | * Generate approximately one checksum every block_len bytes. |
239 | */ | |
cd6aa5b5 | 240 | static void generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy) |
2f03f956 | 241 | { |
a1cbe76e | 242 | int32 i; |
6e45e1dd | 243 | struct map_struct *mapbuf; |
80605142 | 244 | struct sum_struct sum; |
2f03f956 AT |
245 | OFF_T offset = 0; |
246 | ||
423dba8e | 247 | sum_sizes_sqroot(&sum, len); |
e66dfd18 | 248 | |
6e45e1dd | 249 | if (len > 0) |
96d910c7 | 250 | mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength); |
6e45e1dd WD |
251 | else |
252 | mapbuf = NULL; | |
253 | ||
fc0257c9 | 254 | write_sum_head(f_out, &sum); |
2f03f956 | 255 | |
80605142 | 256 | for (i = 0; i < sum.count; i++) { |
a255c592 | 257 | int32 n1 = (int32)MIN(len, (OFF_T)sum.blength); |
6e45e1dd | 258 | char *map = map_ptr(mapbuf, offset, n1); |
80605142 WD |
259 | uint32 sum1 = get_checksum1(map, n1); |
260 | char sum2[SUM_LENGTH]; | |
2f03f956 | 261 | |
cd6aa5b5 WD |
262 | if (f_copy >= 0) |
263 | full_write(f_copy, map, n1); | |
264 | ||
80605142 | 265 | get_checksum2(map, n1, sum2); |
2f03f956 | 266 | |
80605142 | 267 | if (verbose > 3) { |
e66dfd18 | 268 | rprintf(FINFO, |
a255c592 WD |
269 | "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n", |
270 | (double)i, (double)offset, (long)n1, | |
0e36d9da | 271 | (unsigned long)sum1); |
80605142 WD |
272 | } |
273 | write_int(f_out, sum1); | |
fc0257c9 | 274 | write_buf(f_out, sum2, sum.s2length); |
2f03f956 AT |
275 | len -= n1; |
276 | offset += n1; | |
277 | } | |
6e45e1dd WD |
278 | |
279 | if (mapbuf) | |
280 | unmap_file(mapbuf); | |
2f03f956 AT |
281 | } |
282 | ||
06a1dbad | 283 | |
8e85be0a WD |
284 | /* Try to find a filename in the same dir as "fname" with a similar name. */ |
285 | static int find_fuzzy(struct file_struct *file, struct file_list *dirlist) | |
286 | { | |
287 | int fname_len, fname_suf_len; | |
288 | const char *fname_suf, *fname = file->basename; | |
289 | uint32 lowest_dist = 0x7FFFFFFF; | |
290 | int j, lowest_j = -1; | |
291 | ||
292 | fname_len = strlen(fname); | |
293 | fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len); | |
294 | ||
295 | for (j = 0; j < dirlist->count; j++) { | |
296 | struct file_struct *fp = dirlist->files[j]; | |
297 | const char *suf, *name; | |
298 | int len, suf_len; | |
299 | uint32 dist; | |
300 | ||
301 | if (!S_ISREG(fp->mode) || !fp->length | |
302 | || fp->flags & FLAG_NO_FUZZY) | |
303 | continue; | |
304 | ||
305 | name = fp->basename; | |
306 | ||
307 | if (fp->length == file->length | |
308 | && fp->modtime == file->modtime) { | |
309 | if (verbose > 4) { | |
310 | rprintf(FINFO, | |
311 | "fuzzy size/modtime match for %s\n", | |
312 | name); | |
313 | } | |
314 | return j; | |
315 | } | |
316 | ||
317 | len = strlen(name); | |
318 | suf = find_filename_suffix(name, len, &suf_len); | |
319 | ||
320 | dist = fuzzy_distance(name, len, fname, fname_len); | |
321 | /* Add some extra weight to how well the suffixes match. */ | |
322 | dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len) | |
323 | * 10; | |
324 | if (verbose > 4) { | |
325 | rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n", | |
326 | name, (int)(dist>>16), (int)(dist&0xFFFF)); | |
327 | } | |
328 | if (dist <= lowest_dist) { | |
329 | lowest_dist = dist; | |
330 | lowest_j = j; | |
331 | } | |
332 | } | |
333 | ||
334 | return lowest_j; | |
335 | } | |
336 | ||
2f03f956 | 337 | |
0492fdfb WD |
338 | /* Acts on flist->file's ndx'th item, whose name is fname. If a directory, |
339 | * make sure it exists, and has the right permissions/timestamp info. For | |
340 | * all other non-regular files (symlinks, etc.) we create them here. For | |
341 | * regular files that have changed, we try to find a basis file and then | |
342 | * start sending checksums. | |
ef1aa910 | 343 | * |
0492fdfb WD |
344 | * Note that f_out is set to -1 when doing final directory-permission and |
345 | * modification-time repair. */ | |
fa13f396 | 346 | static void recv_generator(char *fname, struct file_list *flist, |
0492fdfb | 347 | struct file_struct *file, int ndx, |
41cfde6b | 348 | int f_out, int f_out_name) |
2cda2560 | 349 | { |
df337831 | 350 | static int missing_below = -1; |
8e85be0a WD |
351 | static char *fuzzy_dirname = NULL; |
352 | static struct file_list *fuzzy_dirlist = NULL; | |
353 | struct file_struct *fuzzy_file = NULL; | |
41cfde6b | 354 | int fd = -1, f_copy = -1; |
89f7eff3 | 355 | STRUCT_STAT st, partial_st; |
41cfde6b | 356 | struct file_struct *back_file = NULL; |
e7d13fe5 | 357 | int statret, stat_errno; |
41cfde6b | 358 | char *fnamecmp, *partialptr, *backupptr = NULL; |
375a4556 | 359 | char fnamecmpbuf[MAXPATHLEN]; |
41cfde6b | 360 | uchar fnamecmp_type; |
f7632fc6 | 361 | |
dfd5ba6a WD |
362 | if (list_only) |
363 | return; | |
2f03f956 | 364 | |
8e85be0a WD |
365 | if (!fname) { |
366 | if (fuzzy_dirlist) { | |
367 | flist_free(fuzzy_dirlist); | |
368 | fuzzy_dirlist = NULL; | |
369 | fuzzy_dirname = NULL; | |
370 | } | |
371 | if (missing_below >= 0) { | |
372 | dry_run--; | |
373 | missing_below = -1; | |
374 | } | |
375 | return; | |
376 | } | |
377 | ||
4875d6b6 WD |
378 | if (verbose > 2) { |
379 | rprintf(FINFO, "recv_generator(%s,%d)\n", | |
380 | safe_fname(fname), ndx); | |
381 | } | |
2f03f956 | 382 | |
7842418b WD |
383 | if (server_filter_list.head |
384 | && check_filter(&server_filter_list, fname, | |
385 | S_ISDIR(file->mode)) < 0) { | |
3e35c34b WD |
386 | if (verbose) { |
387 | rprintf(FINFO, "skipping server-excluded file \"%s\"\n", | |
ecc81fce | 388 | safe_fname(fname)); |
3e35c34b | 389 | } |
97f9dcae | 390 | return; |
3e35c34b | 391 | } |
97f9dcae | 392 | |
8e85be0a | 393 | if (missing_below >= 0 && file->dir.depth <= missing_below) { |
df337831 WD |
394 | dry_run--; |
395 | missing_below = -1; | |
396 | } | |
73f7af0e WD |
397 | if (dry_run > 1) { |
398 | statret = -1; | |
399 | stat_errno = ENOENT; | |
400 | } else { | |
8e85be0a WD |
401 | if (fuzzy_basis && S_ISREG(file->mode)) { |
402 | char *dn = file->dirname ? file->dirname : "."; | |
403 | /* Yes, identical dirnames are guaranteed to have | |
404 | * identical pointers at this point. */ | |
405 | if (fuzzy_dirname != dn) { | |
406 | if (fuzzy_dirlist) | |
407 | flist_free(fuzzy_dirlist); | |
408 | fuzzy_dirname = dn; | |
409 | fuzzy_dirlist = get_dirlist(fuzzy_dirname, 1); | |
410 | } | |
411 | } | |
412 | ||
73f7af0e WD |
413 | statret = link_stat(fname, &st, |
414 | keep_dirlinks && S_ISDIR(file->mode)); | |
415 | stat_errno = errno; | |
416 | } | |
63787382 | 417 | |
a7260c40 | 418 | if (only_existing && statret == -1 && stat_errno == ENOENT) { |
1347d512 | 419 | /* we only want to update existing files */ |
ecc81fce WD |
420 | if (verbose > 1) { |
421 | rprintf(FINFO, "not creating new file \"%s\"\n", | |
422 | safe_fname(fname)); | |
423 | } | |
1347d512 AT |
424 | return; |
425 | } | |
426 | ||
d9b4d267 WD |
427 | if (statret == 0 && !preserve_perms |
428 | && S_ISDIR(st.st_mode) == S_ISDIR(file->mode)) { | |
4df9f368 | 429 | /* if the file exists already and we aren't perserving |
2cda2560 WD |
430 | * permissions then act as though the remote end sent |
431 | * us the file permissions we already have */ | |
67e78a82 WD |
432 | file->mode = (file->mode & ~CHMOD_BITS) |
433 | | (st.st_mode & CHMOD_BITS); | |
4df9f368 AT |
434 | } |
435 | ||
2f03f956 | 436 | if (S_ISDIR(file->mode)) { |
2cda2560 WD |
437 | /* The file to be received is a directory, so we need |
438 | * to prepare appropriately. If there is already a | |
439 | * file of that name and it is *not* a directory, then | |
440 | * we need to delete it. If it doesn't exist, then | |
027428eb | 441 | * (perhaps recursively) create it. */ |
2f03f956 | 442 | if (statret == 0 && !S_ISDIR(st.st_mode)) { |
7e38410e | 443 | delete_file(fname, DEL_TERSE); |
2f03f956 AT |
444 | statret = -1; |
445 | } | |
df337831 WD |
446 | if (dry_run && statret != 0 && missing_below < 0) { |
447 | missing_below = file->dir.depth; | |
448 | dry_run++; | |
449 | } | |
b78296cb | 450 | if (itemize_changes && f_out != -1) |
06a1dbad | 451 | showchg(fname, file, statret, &st, 0); |
2f03f956 | 452 | if (statret != 0 && do_mkdir(fname,file->mode) != 0 && errno != EEXIST) { |
027428eb WD |
453 | if (!relative_paths || errno != ENOENT |
454 | || create_directory_path(fname, orig_umask) < 0 | |
455 | || do_mkdir(fname, file->mode) < 0) { | |
d62bcc17 WD |
456 | rsyserr(FERROR, errno, |
457 | "recv_generator: mkdir %s failed", | |
458 | full_fname(fname)); | |
2f03f956 AT |
459 | } |
460 | } | |
716e73d4 | 461 | if (set_perms(fname, file, statret ? NULL : &st, 0) |
b78296cb | 462 | && verbose && f_out != -1 && !itemize_changes) |
ecc81fce | 463 | rprintf(FINFO, "%s/\n", safe_fname(fname)); |
c93fad5e | 464 | if (delete_during && f_out != -1 && csum_length != SUM_LENGTH |
31937d36 WD |
465 | && (file->flags & FLAG_DEL_HERE)) |
466 | delete_in_dir(flist, fname, file); | |
2f03f956 | 467 | return; |
06a1dbad WD |
468 | } |
469 | ||
470 | if (max_size && file->length > max_size) { | |
4875d6b6 WD |
471 | if (verbose > 1) { |
472 | rprintf(FINFO, "%s is over max-size\n", | |
473 | safe_fname(fname)); | |
474 | } | |
7d1bfaf7 | 475 | return; |
2f03f956 AT |
476 | } |
477 | ||
478 | if (preserve_links && S_ISLNK(file->mode)) { | |
4f5b0756 | 479 | #ifdef SUPPORT_LINKS |
728d0922 | 480 | if (safe_symlinks && unsafe_symlink(file->u.link, fname)) { |
2f03f956 | 481 | if (verbose) { |
4875d6b6 WD |
482 | rprintf(FINFO, |
483 | "ignoring unsafe symlink %s -> \"%s\"\n", | |
484 | full_fname(fname), | |
485 | safe_fname(file->u.link)); | |
2f03f956 AT |
486 | } |
487 | return; | |
488 | } | |
489 | if (statret == 0) { | |
7e38410e WD |
490 | int dflag = S_ISDIR(st.st_mode) ? DEL_DIR : 0; |
491 | char lnk[MAXPATHLEN]; | |
492 | int len; | |
493 | ||
494 | if (!dflag | |
495 | && (len = readlink(fname, lnk, MAXPATHLEN-1)) > 0) { | |
496 | lnk[len] = 0; | |
85d4d142 MP |
497 | /* A link already pointing to the |
498 | * right place -- no further action | |
499 | * required. */ | |
7e38410e | 500 | if (strcmp(lnk, file->u.link) == 0) { |
b78296cb | 501 | if (itemize_changes) |
06a1dbad | 502 | showchg(fname, file, 0, &st, 0); |
c41b52c4 WD |
503 | set_perms(fname, file, &st, |
504 | PERMS_REPORT); | |
2f03f956 AT |
505 | return; |
506 | } | |
2cda2560 | 507 | } |
7e38410e WD |
508 | /* Not the right symlink (or not a symlink), so |
509 | * delete it. */ | |
510 | delete_file(fname, dflag | DEL_TERSE); | |
2f03f956 | 511 | } |
728d0922 | 512 | if (do_symlink(file->u.link,fname) != 0) { |
d62bcc17 | 513 | rsyserr(FERROR, errno, "symlink %s -> \"%s\" failed", |
ecc81fce | 514 | full_fname(fname), safe_fname(file->u.link)); |
2f03f956 AT |
515 | } else { |
516 | set_perms(fname,file,NULL,0); | |
b78296cb | 517 | if (itemize_changes) { |
06a1dbad WD |
518 | showchg(fname, file, statret, &st, |
519 | SC_SYMLINK_CHANGED | |
520 | | (verbose ? SC_NO_NL : 0)); | |
521 | } | |
2f03f956 | 522 | if (verbose) { |
06a1dbad | 523 | rprintf(FINFO, "%s -> %s\n", |
b78296cb | 524 | itemize_changes ? "" : safe_fname(fname), |
06a1dbad | 525 | safe_fname(file->u.link)); |
2f03f956 AT |
526 | } |
527 | } | |
528 | #endif | |
529 | return; | |
530 | } | |
531 | ||
2f03f956 | 532 | if (am_root && preserve_devices && IS_DEVICE(file->mode)) { |
b78296cb | 533 | if (itemize_changes) |
06a1dbad | 534 | showchg(fname, file, statret, &st, 0); |
2cda2560 | 535 | if (statret != 0 || |
2f03f956 | 536 | st.st_mode != file->mode || |
3915fd75 | 537 | st.st_rdev != file->u.rdev) { |
7e38410e WD |
538 | int dflag = S_ISDIR(st.st_mode) ? DEL_DIR : 0; |
539 | delete_file(fname, dflag | DEL_TERSE); | |
d62bcc17 | 540 | if (verbose > 2) { |
2f03f956 | 541 | rprintf(FINFO,"mknod(%s,0%o,0x%x)\n", |
ecc81fce WD |
542 | safe_fname(fname), |
543 | (int)file->mode, (int)file->u.rdev); | |
d62bcc17 | 544 | } |
728d0922 | 545 | if (do_mknod(fname,file->mode,file->u.rdev) != 0) { |
d62bcc17 WD |
546 | rsyserr(FERROR, errno, "mknod %s failed", |
547 | full_fname(fname)); | |
2f03f956 AT |
548 | } else { |
549 | set_perms(fname,file,NULL,0); | |
b78296cb | 550 | if (verbose && !itemize_changes) { |
ecc81fce WD |
551 | rprintf(FINFO, "%s\n", |
552 | safe_fname(fname)); | |
553 | } | |
2f03f956 AT |
554 | } |
555 | } else { | |
c41b52c4 | 556 | set_perms(fname, file, &st, PERMS_REPORT); |
2f03f956 AT |
557 | } |
558 | return; | |
559 | } | |
2f03f956 | 560 | |
6dff5992 | 561 | if (preserve_hard_links && hard_link_check(file, HL_CHECK_MASTER)) |
2f03f956 | 562 | return; |
2f03f956 AT |
563 | |
564 | if (!S_ISREG(file->mode)) { | |
ecc81fce WD |
565 | rprintf(FINFO, "skipping non-regular file \"%s\"\n", |
566 | safe_fname(fname)); | |
2f03f956 AT |
567 | return; |
568 | } | |
569 | ||
375a4556 | 570 | fnamecmp = fname; |
41cfde6b | 571 | fnamecmp_type = FNAMECMP_FNAME; |
375a4556 | 572 | |
06a1dbad | 573 | if (statret != 0 && basis_dir[0] != NULL) { |
b7e8628c WD |
574 | int fallback_match = -1; |
575 | int match_level = 0; | |
576 | int i = 0; | |
577 | do { | |
578 | pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, | |
579 | basis_dir[i], fname); | |
580 | if (link_stat(fnamecmpbuf, &st, 0) == 0 | |
581 | && S_ISREG(st.st_mode)) { | |
582 | statret = 0; | |
583 | if (link_dest) { | |
584 | if (!match_level) { | |
585 | fallback_match = i; | |
586 | match_level = 1; | |
587 | } else if (match_level == 2 | |
588 | && !unchanged_attrs(file, &st)) | |
589 | continue; | |
590 | if (!unchanged_file(fnamecmpbuf, file, &st)) | |
591 | continue; | |
592 | fallback_match = i; | |
593 | match_level = 2; | |
594 | if (!unchanged_attrs(file, &st)) | |
595 | continue; | |
596 | } | |
597 | match_level = 3; | |
598 | break; | |
599 | } | |
600 | } while (basis_dir[++i] != NULL); | |
601 | if (statret == 0) { | |
602 | if (match_level < 3) { | |
603 | i = fallback_match; | |
604 | pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, | |
605 | basis_dir[i], fname); | |
606 | } | |
4f5b0756 | 607 | #ifdef HAVE_LINK |
b7e8628c | 608 | if (link_dest && match_level == 3 && !dry_run) { |
e7d13fe5 WD |
609 | if (do_link(fnamecmpbuf, fname) < 0) { |
610 | if (verbose) { | |
611 | rsyserr(FINFO, errno, | |
612 | "link %s => %s", | |
4875d6b6 | 613 | full_fname(fnamecmpbuf), |
e7d13fe5 WD |
614 | safe_fname(fname)); |
615 | } | |
616 | fnamecmp = fnamecmpbuf; | |
2be2fb3e | 617 | fnamecmp_type = i; |
e7bc9b64 | 618 | } |
e7d13fe5 | 619 | } else |
59c95e42 | 620 | #endif |
41cfde6b | 621 | { |
e7d13fe5 | 622 | fnamecmp = fnamecmpbuf; |
2be2fb3e | 623 | fnamecmp_type = i; |
41cfde6b | 624 | } |
e7d13fe5 WD |
625 | } |
626 | } | |
627 | ||
628 | if (statret == 0 && !S_ISREG(st.st_mode)) { | |
7e38410e WD |
629 | int dflag = S_ISDIR(st.st_mode) ? DEL_DIR : 0; |
630 | if (delete_file(fname, dflag | DEL_TERSE) != 0) | |
e7d13fe5 WD |
631 | return; |
632 | statret = -1; | |
633 | stat_errno = ENOENT; | |
375a4556 DD |
634 | } |
635 | ||
9d954dca | 636 | if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL |
72c19bb3 WD |
637 | && link_stat(partialptr, &partial_st, 0) == 0 |
638 | && S_ISREG(partial_st.st_mode)) { | |
06a1dbad | 639 | if (statret != 0) |
72c19bb3 WD |
640 | goto prepare_to_open; |
641 | } else | |
642 | partialptr = NULL; | |
89f7eff3 | 643 | |
06a1dbad | 644 | if (statret != 0 && fuzzy_basis && dry_run <= 1) { |
8e85be0a WD |
645 | int j = find_fuzzy(file, fuzzy_dirlist); |
646 | if (j >= 0) { | |
647 | fuzzy_file = fuzzy_dirlist->files[j]; | |
648 | f_name_to(fuzzy_file, fnamecmpbuf); | |
649 | if (verbose > 2) { | |
650 | rprintf(FINFO, "fuzzy basis selected for %s: %s\n", | |
651 | safe_fname(fname), safe_fname(fnamecmpbuf)); | |
652 | } | |
653 | st.st_mode = fuzzy_file->mode; | |
654 | st.st_size = fuzzy_file->length; | |
655 | st.st_mtime = fuzzy_file->modtime; | |
656 | statret = 0; | |
657 | fnamecmp = fnamecmpbuf; | |
658 | fnamecmp_type = FNAMECMP_FUZZY; | |
659 | } | |
660 | } | |
661 | ||
06a1dbad | 662 | if (statret != 0) { |
6dff5992 WD |
663 | if (preserve_hard_links && hard_link_check(file, HL_SKIP)) |
664 | return; | |
41cfde6b WD |
665 | if (stat_errno == ENOENT) |
666 | goto notify_others; | |
667 | if (verbose > 1) { | |
e7d13fe5 WD |
668 | rsyserr(FERROR, stat_errno, |
669 | "recv_generator: failed to stat %s", | |
d62bcc17 | 670 | full_fname(fname)); |
2f03f956 AT |
671 | } |
672 | return; | |
673 | } | |
674 | ||
41cfde6b | 675 | if (opt_ignore_existing && fnamecmp_type == FNAMECMP_FNAME) { |
3d6feada | 676 | if (verbose > 1) |
ecc81fce | 677 | rprintf(FINFO, "%s exists\n", safe_fname(fname)); |
3d6feada | 678 | return; |
2cda2560 | 679 | } |
3d6feada | 680 | |
41cfde6b | 681 | if (update_only && fnamecmp_type == FNAMECMP_FNAME |
d3a4375f | 682 | && cmp_modtime(st.st_mtime, file->modtime) > 0) { |
2f03f956 | 683 | if (verbose > 1) |
ecc81fce | 684 | rprintf(FINFO, "%s is newer\n", safe_fname(fname)); |
2f03f956 AT |
685 | return; |
686 | } | |
687 | ||
2be2fb3e | 688 | if (!compare_dest && fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH) |
b7e8628c | 689 | ; |
8e85be0a WD |
690 | else if (fnamecmp_type == FNAMECMP_FUZZY) |
691 | ; | |
b7e8628c | 692 | else if (unchanged_file(fnamecmp, file, &st)) { |
b78296cb | 693 | if (itemize_changes) { |
06a1dbad WD |
694 | showchg(fname, file, statret, &st, |
695 | fnamecmp_type == FNAMECMP_FNAME ? 0 | |
696 | : SC_NO_BASIS); | |
697 | } | |
41cfde6b | 698 | if (fnamecmp_type == FNAMECMP_FNAME) |
c41b52c4 | 699 | set_perms(fname, file, &st, PERMS_REPORT); |
2f03f956 AT |
700 | return; |
701 | } | |
702 | ||
89f7eff3 | 703 | prepare_to_open: |
9d954dca WD |
704 | if (partialptr) { |
705 | st = partial_st; | |
706 | fnamecmp = partialptr; | |
707 | fnamecmp_type = FNAMECMP_PARTIAL_DIR; | |
708 | statret = 0; | |
709 | } | |
710 | ||
3841a04e WD |
711 | if (dry_run || read_batch) |
712 | goto notify_others; | |
713 | if (whole_file > 0) { | |
06a1dbad WD |
714 | if (statret == 0) |
715 | statret = 1; | |
41cfde6b | 716 | goto notify_others; |
2f03f956 AT |
717 | } |
718 | ||
8e85be0a WD |
719 | if (fuzzy_basis) { |
720 | int j = flist_find(fuzzy_dirlist, file); | |
721 | if (j >= 0) /* don't use changing file as future fuzzy basis */ | |
722 | fuzzy_dirlist->files[j]->flags |= FLAG_NO_FUZZY; | |
723 | } | |
724 | ||
2cda2560 | 725 | /* open the file */ |
8c9fd200 | 726 | fd = do_open(fnamecmp, O_RDONLY, 0); |
2f03f956 AT |
727 | |
728 | if (fd == -1) { | |
d62bcc17 WD |
729 | rsyserr(FERROR, errno, "failed to open %s, continuing", |
730 | full_fname(fnamecmp)); | |
cd6aa5b5 | 731 | pretend_missing: |
60be6acf | 732 | /* pretend the file didn't exist */ |
6dff5992 WD |
733 | if (preserve_hard_links && hard_link_check(file, HL_SKIP)) |
734 | return; | |
41cfde6b WD |
735 | statret = -1; |
736 | goto notify_others; | |
2f03f956 AT |
737 | } |
738 | ||
cd6aa5b5 WD |
739 | if (inplace && make_backups) { |
740 | if (!(backupptr = get_backup_name(fname))) { | |
741 | close(fd); | |
742 | return; | |
743 | } | |
7842418b | 744 | if (!(back_file = make_file(fname, NULL, NO_FILTERS))) { |
cd6aa5b5 WD |
745 | close(fd); |
746 | goto pretend_missing; | |
747 | } | |
748 | if (robust_unlink(backupptr) && errno != ENOENT) { | |
749 | rsyserr(FERROR, errno, "unlink %s", | |
750 | full_fname(backupptr)); | |
751 | free(back_file); | |
752 | close(fd); | |
753 | return; | |
754 | } | |
755 | if ((f_copy = do_open(backupptr, | |
756 | O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) { | |
757 | rsyserr(FERROR, errno, "open %s", | |
758 | full_fname(backupptr)); | |
759 | free(back_file); | |
760 | close(fd); | |
761 | return; | |
762 | } | |
41cfde6b | 763 | fnamecmp_type = FNAMECMP_BACKUP; |
cd6aa5b5 WD |
764 | } |
765 | ||
dfd5ba6a | 766 | if (verbose > 3) { |
ecc81fce WD |
767 | rprintf(FINFO, "gen mapped %s of size %.0f\n", |
768 | safe_fname(fnamecmp), (double)st.st_size); | |
dfd5ba6a | 769 | } |
2f03f956 | 770 | |
2f03f956 | 771 | if (verbose > 2) |
0492fdfb | 772 | rprintf(FINFO, "generating and sending sums for %d\n", ndx); |
2f03f956 | 773 | |
41cfde6b | 774 | notify_others: |
0492fdfb | 775 | write_int(f_out, ndx); |
17b5b32f WD |
776 | if (protocol_version >= 29 && inplace && !read_batch) |
777 | write_byte(f_out, fnamecmp_type); | |
8e85be0a | 778 | if (f_out_name >= 0) { |
41cfde6b | 779 | write_byte(f_out_name, fnamecmp_type); |
8e85be0a WD |
780 | if (fnamecmp_type == FNAMECMP_FUZZY) { |
781 | uchar lenbuf[3], *lb = lenbuf; | |
782 | int len = strlen(fuzzy_file->basename); | |
783 | if (len > 0x7F) { | |
784 | #if MAXPATHLEN > 0x7FFF | |
785 | *lb++ = len / 0x10000 + 0x80; | |
786 | *lb++ = len / 0x100; | |
787 | #else | |
788 | *lb++ = len / 0x100 + 0x80; | |
789 | #endif | |
790 | } | |
791 | *lb = len; | |
792 | write_buf(f_out_name, lenbuf, lb - lenbuf + 1); | |
793 | write_buf(f_out_name, fuzzy_file->basename, len); | |
794 | } | |
795 | } | |
b78296cb | 796 | if (itemize_changes) { |
06a1dbad WD |
797 | showchg(fname, file, statret, &st, |
798 | (always_checksum ? SC_CHECKSUM_CHANGED : 0) | |
799 | | SC_SENDING_FILE); | |
800 | } | |
cd6aa5b5 | 801 | |
41cfde6b WD |
802 | if (dry_run || read_batch) |
803 | return; | |
804 | ||
805 | if (statret == 0) { | |
806 | generate_and_send_sums(fd, st.st_size, f_out, f_copy); | |
2f03f956 | 807 | |
41cfde6b WD |
808 | if (f_copy >= 0) { |
809 | close(f_copy); | |
810 | set_perms(backupptr, back_file, NULL, 0); | |
811 | if (verbose > 1) { | |
812 | rprintf(FINFO, "backed up %s to %s\n", | |
4875d6b6 | 813 | safe_fname(fname), safe_fname(backupptr)); |
41cfde6b WD |
814 | } |
815 | free(back_file); | |
816 | } | |
817 | ||
818 | close(fd); | |
819 | } else | |
820 | write_sum_head(f_out, NULL); | |
2f03f956 AT |
821 | } |
822 | ||
823 | ||
41cfde6b WD |
824 | void generate_files(int f_out, struct file_list *flist, char *local_name, |
825 | int f_out_name) | |
2f03f956 AT |
826 | { |
827 | int i; | |
e1f67417 | 828 | int phase = 0; |
968c8030 | 829 | char fbuf[MAXPATHLEN]; |
3ea9bbd6 WD |
830 | int need_retouch_dir_times = preserve_times && !omit_dir_times; |
831 | int need_retouch_dir_perms = 0; | |
0492fdfb WD |
832 | int save_only_existing = only_existing; |
833 | int save_opt_ignore_existing = opt_ignore_existing; | |
2f03f956 | 834 | |
45e08edb WD |
835 | if (verbose > 2) { |
836 | rprintf(FINFO, "generator starting pid=%ld count=%d\n", | |
837 | (long)getpid(), flist->count); | |
838 | } | |
2f03f956 | 839 | |
3e7053ac MP |
840 | if (verbose >= 2) { |
841 | rprintf(FINFO, | |
f38bd4a0 | 842 | whole_file > 0 |
3e7053ac MP |
843 | ? "delta-transmission disabled for local transfer or --whole-file\n" |
844 | : "delta transmission enabled\n"); | |
845 | } | |
2cda2560 | 846 | |
0492fdfb WD |
847 | /* We expect to just sit around now, so don't exit on a timeout. |
848 | * If we really get a timeout then the other process should exit. */ | |
a57873b7 AT |
849 | io_timeout = 0; |
850 | ||
2f03f956 AT |
851 | for (i = 0; i < flist->count; i++) { |
852 | struct file_struct *file = flist->files[i]; | |
dfd5ba6a | 853 | struct file_struct copy; |
2f03f956 | 854 | |
dfd5ba6a WD |
855 | if (!file->basename) |
856 | continue; | |
0492fdfb WD |
857 | |
858 | /* We need to ensure that any dirs we create have writeable | |
859 | * permissions during the time we are putting files within | |
860 | * them. This is then fixed after the transfer is done. */ | |
dfd5ba6a WD |
861 | if (!am_root && S_ISDIR(file->mode) && !(file->mode & S_IWUSR)) { |
862 | copy = *file; | |
dfd5ba6a WD |
863 | copy.mode |= S_IWUSR; /* user write */ |
864 | file = © | |
3ea9bbd6 | 865 | need_retouch_dir_perms = 1; |
2f03f956 AT |
866 | } |
867 | ||
3fef5364 | 868 | recv_generator(local_name ? local_name : f_name_to(file, fbuf), |
fa13f396 | 869 | flist, file, i, f_out, f_out_name); |
2f03f956 | 870 | } |
8e85be0a | 871 | recv_generator(NULL, NULL, NULL, 0, -1, -1); |
c93fad5e | 872 | if (delete_during) |
31937d36 | 873 | delete_in_dir(NULL, NULL, NULL); |
2f03f956 AT |
874 | |
875 | phase++; | |
876 | csum_length = SUM_LENGTH; | |
0492fdfb WD |
877 | only_existing = max_size = opt_ignore_existing = 0; |
878 | update_only = always_checksum = size_only = 0; | |
e1f67417 | 879 | ignore_times = 1; |
2f03f956 AT |
880 | |
881 | if (verbose > 2) | |
882 | rprintf(FINFO,"generate_files phase=%d\n",phase); | |
883 | ||
7daccb8e | 884 | write_int(f_out, -1); |
2f03f956 | 885 | |
bc63ae3f S |
886 | /* files can cycle through the system more than once |
887 | * to catch initial checksum errors */ | |
b9b15fb1 | 888 | while ((i = get_redo_num()) != -1) { |
bc63ae3f | 889 | struct file_struct *file = flist->files[i]; |
3fef5364 | 890 | recv_generator(local_name ? local_name : f_name_to(file, fbuf), |
fa13f396 | 891 | flist, file, i, f_out, f_out_name); |
bc63ae3f | 892 | } |
2f03f956 | 893 | |
bc63ae3f | 894 | phase++; |
0492fdfb WD |
895 | only_existing = save_only_existing; |
896 | opt_ignore_existing = save_opt_ignore_existing; | |
897 | ||
bc63ae3f S |
898 | if (verbose > 2) |
899 | rprintf(FINFO,"generate_files phase=%d\n",phase); | |
2f03f956 | 900 | |
7daccb8e | 901 | write_int(f_out, -1); |
6dff5992 | 902 | |
b0da4b23 WD |
903 | /* Read post-redo-phase MSG_DONE and any prior messages. */ |
904 | get_redo_num(); | |
905 | ||
6dff5992 WD |
906 | if (preserve_hard_links) |
907 | do_hard_links(); | |
908 | ||
0492fdfb WD |
909 | if ((need_retouch_dir_perms || need_retouch_dir_times) |
910 | && !list_only && !local_name && !dry_run) { | |
3ea9bbd6 WD |
911 | /* Now we need to fix any directory permissions that were |
912 | * modified during the transfer and/or re-set any tweaked | |
913 | * modified-time values. */ | |
914 | for (i = 0; i < flist->count; i++) { | |
915 | struct file_struct *file = flist->files[i]; | |
916 | if (!file->basename || !S_ISDIR(file->mode)) | |
917 | continue; | |
918 | if (!need_retouch_dir_times && file->mode & S_IWUSR) | |
919 | continue; | |
920 | recv_generator(local_name ? local_name : f_name(file), | |
921 | flist, file, i, -1, -1); | |
922 | } | |
6dff5992 | 923 | } |
8e85be0a | 924 | recv_generator(NULL, NULL, NULL, 0, -1, -1); |
6dff5992 WD |
925 | |
926 | if (verbose > 2) | |
927 | rprintf(FINFO,"generate_files finished\n"); | |
2f03f956 | 928 | } |