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Commit | Line | Data |
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6aae748e | 1 | /* |
0f78b815 WD |
2 | * Routines to support hard-linking. |
3 | * | |
4 | * Copyright (C) 1996 Andrew Tridgell | |
5 | * Copyright (C) 1996 Paul Mackerras | |
6 | * Copyright (C) 2002 Martin Pool <mbp@samba.org> | |
db5bfe67 | 7 | * Copyright (C) 2004-2022 Wayne Davison |
0f78b815 WD |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
8e41b68e WD |
10 | * it under the terms of the GNU General Public License as published by |
11 | * the Free Software Foundation; either version 3 of the License, or | |
12 | * (at your option) any later version. | |
0f78b815 WD |
13 | * |
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. | |
18 | * | |
e7c67065 | 19 | * You should have received a copy of the GNU General Public License along |
4fd842f9 | 20 | * with this program; if not, visit the http://fsf.org website. |
0f78b815 | 21 | */ |
dc5ddbcc AT |
22 | |
23 | #include "rsync.h" | |
5dd14f0c | 24 | #include "inums.h" |
09ca0d15 | 25 | #include "ifuncs.h" |
dc5ddbcc | 26 | |
82ad07c4 | 27 | extern int dry_run; |
eb67a690 | 28 | extern int list_only; |
d4d6646a WD |
29 | extern int am_sender; |
30 | extern int inc_recurse; | |
841d9436 | 31 | extern int do_xfers; |
1d6c9676 | 32 | extern int alt_dest_type; |
1c3344a1 | 33 | extern int preserve_acls; |
315c2152 | 34 | extern int preserve_xattrs; |
c905bf37 | 35 | extern int protocol_version; |
47c11975 | 36 | extern int remove_source_files; |
20f90d5e | 37 | extern int stdout_format_has_i; |
aadc84d3 | 38 | extern int maybe_ATTRS_REPORT; |
f7a76b9c | 39 | extern int unsort_ndx; |
b791d680 | 40 | extern char *basis_dir[MAX_BASIS_DIRS+1]; |
e982d591 | 41 | extern struct file_list *cur_flist; |
dc5ddbcc | 42 | |
4f5b0756 | 43 | #ifdef SUPPORT_HARD_LINKS |
9f2e3c3f | 44 | |
c905bf37 WD |
45 | /* Starting with protocol 30, we use a simple hashtable on the sending side |
46 | * for hashing the st_dev and st_ino info. The receiving side gets told | |
47 | * (via flags and a "group index") which items are hard-linked together, so | |
d4d6646a WD |
48 | * we can avoid the pool of dev+inode data. For incremental recursion mode, |
49 | * the receiver will use a ndx hash to remember old pathnames. */ | |
c905bf37 | 50 | |
f8005578 WD |
51 | static void *data_when_new = ""; |
52 | ||
d4d6646a WD |
53 | static struct hashtable *dev_tbl; |
54 | ||
55 | static struct hashtable *prior_hlinks; | |
56 | ||
57 | static struct file_list *hlink_flist; | |
9f2e3c3f | 58 | |
aadc84d3 WD |
59 | void init_hard_links(void) |
60 | { | |
d4d6646a | 61 | if (am_sender || protocol_version < 30) |
f8005578 | 62 | dev_tbl = hashtable_create(16, HT_KEY64); |
d4d6646a | 63 | else if (inc_recurse) |
f8005578 | 64 | prior_hlinks = hashtable_create(1024, HT_KEY32); |
c905bf37 WD |
65 | } |
66 | ||
62606570 | 67 | struct ht_int64_node *idev_find(int64 dev, int64 ino) |
c905bf37 | 68 | { |
62606570 | 69 | static struct ht_int64_node *dev_node = NULL; |
c905bf37 | 70 | |
db22e586 WD |
71 | /* Note that some OSes have a dev == 0, so increment to avoid storing a 0. */ |
72 | if (!dev_node || dev_node->key != dev+1) { | |
c905bf37 | 73 | /* We keep a separate hash table of inodes for every device. */ |
f8005578 WD |
74 | dev_node = hashtable_find(dev_tbl, dev+1, data_when_new); |
75 | if (dev_node->data == data_when_new) { | |
76 | dev_node->data = hashtable_create(512, HT_KEY64); | |
56ac8123 | 77 | if (DEBUG_GTE(HLINK, 3)) { |
e63ff70e WD |
78 | rprintf(FINFO, "[%s] created hashtable for dev %s\n", |
79 | who_am_i(), big_num(dev)); | |
0c096e29 WD |
80 | } |
81 | } | |
f8005578 | 82 | } |
c905bf37 | 83 | |
f8005578 | 84 | return hashtable_find(dev_node->data, ino, (void*)-1L); |
c905bf37 WD |
85 | } |
86 | ||
87 | void idev_destroy(void) | |
88 | { | |
89 | int i; | |
90 | ||
91 | for (i = 0; i < dev_tbl->size; i++) { | |
62606570 WD |
92 | struct ht_int32_node *node = HT_NODE(dev_tbl, dev_tbl->nodes, i); |
93 | if (node->data) | |
94 | hashtable_destroy(node->data); | |
c905bf37 WD |
95 | } |
96 | ||
62606570 | 97 | hashtable_destroy(dev_tbl); |
c905bf37 WD |
98 | } |
99 | ||
c905bf37 | 100 | static int hlink_compare_gnum(int *int1, int *int2) |
1d5cda22 | 101 | { |
d4d6646a WD |
102 | struct file_struct *f1 = hlink_flist->sorted[*int1]; |
103 | struct file_struct *f2 = hlink_flist->sorted[*int2]; | |
719985cb WD |
104 | int32 gnum1 = F_HL_GNUM(f1); |
105 | int32 gnum2 = F_HL_GNUM(f2); | |
1d5cda22 | 106 | |
c905bf37 WD |
107 | if (gnum1 != gnum2) |
108 | return gnum1 > gnum2 ? 1 : -1; | |
9935066b | 109 | |
c905bf37 WD |
110 | return *int1 > *int2 ? 1 : -1; |
111 | } | |
9935066b | 112 | |
c905bf37 WD |
113 | static void match_gnums(int32 *ndx_list, int ndx_count) |
114 | { | |
115 | int32 from, prev; | |
116 | struct file_struct *file, *file_next; | |
d4d6646a | 117 | struct ht_int32_node *node = NULL; |
719985cb | 118 | int32 gnum, gnum_next; |
c905bf37 | 119 | |
e63ff70e | 120 | qsort(ndx_list, ndx_count, sizeof ndx_list[0], (int (*)()) hlink_compare_gnum); |
c905bf37 WD |
121 | |
122 | for (from = 0; from < ndx_count; from++) { | |
d4d6646a WD |
123 | file = hlink_flist->sorted[ndx_list[from]]; |
124 | gnum = F_HL_GNUM(file); | |
125 | if (inc_recurse) { | |
f8005578 WD |
126 | node = hashtable_find(prior_hlinks, gnum, data_when_new); |
127 | if (node->data == data_when_new) { | |
11eb67ee | 128 | node->data = new_array0(char, 5); |
d4d6646a | 129 | assert(gnum >= hlink_flist->ndx_start); |
c980db5f WD |
130 | file->flags |= FLAG_HLINK_FIRST; |
131 | prev = -1; | |
132 | } else if (CVAL(node->data, 0) == 0) { | |
133 | struct file_list *flist; | |
c980db5f | 134 | prev = IVAL(node->data, 1); |
e982d591 | 135 | flist = flist_for_ndx(prev, NULL); |
c9b62cf3 WD |
136 | if (flist) |
137 | flist->files[prev - flist->ndx_start]->flags &= ~FLAG_HLINK_LAST; | |
138 | else { | |
139 | /* We skipped all prior files in this | |
140 | * group, so mark this as a "first". */ | |
141 | file->flags |= FLAG_HLINK_FIRST; | |
142 | prev = -1; | |
143 | } | |
c980db5f WD |
144 | } else |
145 | prev = -1; | |
146 | } else { | |
d4d6646a WD |
147 | file->flags |= FLAG_HLINK_FIRST; |
148 | prev = -1; | |
c980db5f | 149 | } |
d4d6646a WD |
150 | for ( ; from < ndx_count-1; file = file_next, gnum = gnum_next, from++) { /*SHARED ITERATOR*/ |
151 | file_next = hlink_flist->sorted[ndx_list[from+1]]; | |
c905bf37 WD |
152 | gnum_next = F_HL_GNUM(file_next); |
153 | if (gnum != gnum_next) | |
154 | break; | |
c905bf37 | 155 | F_HL_PREV(file) = prev; |
5288be3a | 156 | /* The linked list uses over-the-wire ndx values. */ |
f7a76b9c | 157 | if (unsort_ndx) |
332cf6df WD |
158 | prev = F_NDX(file); |
159 | else | |
d4d6646a | 160 | prev = ndx_list[from] + hlink_flist->ndx_start; |
c905bf37 | 161 | } |
d4d6646a | 162 | if (prev < 0 && !inc_recurse) { |
c980db5f WD |
163 | /* Disable hard-link bit and set DONE so that |
164 | * HLINK_BUMP()-dependent values are unaffected. */ | |
d4d6646a | 165 | file->flags &= ~(FLAG_HLINKED | FLAG_HLINK_FIRST); |
0eeb9f54 | 166 | file->flags |= FLAG_HLINK_DONE; |
d4d6646a WD |
167 | continue; |
168 | } | |
169 | ||
170 | file->flags |= FLAG_HLINK_LAST; | |
171 | F_HL_PREV(file) = prev; | |
172 | if (inc_recurse && CVAL(node->data, 0) == 0) { | |
f7a76b9c | 173 | if (unsort_ndx) |
d4d6646a WD |
174 | prev = F_NDX(file); |
175 | else | |
d4d6646a WD |
176 | prev = ndx_list[from] + hlink_flist->ndx_start; |
177 | SIVAL(node->data, 1, prev); | |
c905bf37 WD |
178 | } |
179 | } | |
180 | } | |
181 | ||
182 | /* Analyze the hard-links in the file-list by creating a list of all the | |
183 | * items that have hlink data, sorting them, and matching up identical | |
184 | * values into clusters. These will be a single linked list from last | |
185 | * to first when we're done. */ | |
d4d6646a | 186 | void match_hard_links(struct file_list *flist) |
c905bf37 | 187 | { |
ced4fd89 | 188 | if (!list_only && flist->used) { |
eb67a690 WD |
189 | int i, ndx_count = 0; |
190 | int32 *ndx_list; | |
c905bf37 | 191 | |
11eb67ee | 192 | ndx_list = new_array(int32, flist->used); |
c905bf37 | 193 | |
eb67a690 WD |
194 | for (i = 0; i < flist->used; i++) { |
195 | if (F_IS_HLINKED(flist->sorted[i])) | |
196 | ndx_list[ndx_count++] = i; | |
197 | } | |
1d5cda22 | 198 | |
eb67a690 | 199 | hlink_flist = flist; |
d4d6646a | 200 | |
eb67a690 WD |
201 | if (ndx_count) |
202 | match_gnums(ndx_list, ndx_count); | |
007996b4 | 203 | |
eb67a690 WD |
204 | free(ndx_list); |
205 | } | |
007996b4 WD |
206 | if (protocol_version < 30) |
207 | idev_destroy(); | |
dc5ddbcc AT |
208 | } |
209 | ||
3cd5301f | 210 | static int maybe_hard_link(struct file_struct *file, int ndx, |
c55fb5e1 | 211 | char *fname, int statret, stat_x *sxp, |
aadc84d3 WD |
212 | const char *oldname, STRUCT_STAT *old_stp, |
213 | const char *realname, int itemizing, enum logcode code) | |
3cd5301f WD |
214 | { |
215 | if (statret == 0) { | |
1c3344a1 WD |
216 | if (sxp->st.st_dev == old_stp->st_dev |
217 | && sxp->st.st_ino == old_stp->st_ino) { | |
3cd5301f | 218 | if (itemizing) { |
1c3344a1 | 219 | itemize(fname, file, ndx, statret, sxp, |
3cd5301f WD |
220 | ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS, |
221 | 0, ""); | |
222 | } | |
951e826b | 223 | if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) |
aadc84d3 WD |
224 | rprintf(FCLIENT, "%s is uptodate\n", fname); |
225 | file->flags |= FLAG_HLINK_DONE; | |
3cd5301f WD |
226 | return 0; |
227 | } | |
3cd5301f | 228 | } |
aadc84d3 | 229 | |
ba43e885 | 230 | if (atomic_create(file, fname, NULL, oldname, MAKEDEV(0, 0), sxp, statret == 0 ? DEL_FOR_FILE : 0)) { |
aadc84d3 | 231 | if (itemizing) { |
1c3344a1 | 232 | itemize(fname, file, ndx, statret, sxp, |
aadc84d3 WD |
233 | ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS, 0, |
234 | realname); | |
235 | } | |
951e826b | 236 | if (code != FNONE && INFO_GTE(NAME, 1)) |
aadc84d3 WD |
237 | rprintf(code, "%s => %s\n", fname, realname); |
238 | return 0; | |
239 | } | |
c55fb5e1 | 240 | |
aadc84d3 | 241 | return -1; |
3cd5301f | 242 | } |
3cd5301f | 243 | |
d4d6646a | 244 | /* Figure out if a prior entry is still there or if we just have a |
c9b62cf3 WD |
245 | * cached name for it. */ |
246 | static char *check_prior(struct file_struct *file, int gnum, | |
247 | int *prev_ndx_p, struct file_list **flist_p) | |
d4d6646a | 248 | { |
c9b62cf3 | 249 | struct file_struct *fp; |
d4d6646a | 250 | struct ht_int32_node *node; |
c9b62cf3 | 251 | int prev_ndx = F_HL_PREV(file); |
d4d6646a | 252 | |
c9b62cf3 | 253 | while (1) { |
487cb526 WD |
254 | struct file_list *flist; |
255 | if (prev_ndx < 0 | |
e982d591 | 256 | || (flist = flist_for_ndx(prev_ndx, NULL)) == NULL) |
c9b62cf3 WD |
257 | break; |
258 | fp = flist->files[prev_ndx - flist->ndx_start]; | |
259 | if (!(fp->flags & FLAG_SKIP_HLINK)) { | |
260 | *prev_ndx_p = prev_ndx; | |
261 | *flist_p = flist; | |
262 | return NULL; | |
263 | } | |
264 | F_HL_PREV(file) = prev_ndx = F_HL_PREV(fp); | |
d4d6646a WD |
265 | } |
266 | ||
876ad10c | 267 | if (inc_recurse |
f8005578 | 268 | && (node = hashtable_find(prior_hlinks, gnum, NULL)) != NULL) { |
487cb526 WD |
269 | assert(node->data != NULL); |
270 | if (CVAL(node->data, 0) != 0) { | |
271 | *prev_ndx_p = -1; | |
272 | *flist_p = NULL; | |
273 | return node->data; | |
274 | } | |
c9b62cf3 | 275 | /* The prior file must have been skipped. */ |
487cb526 | 276 | F_HL_PREV(file) = -1; |
c9b62cf3 WD |
277 | } |
278 | ||
487cb526 WD |
279 | *prev_ndx_p = -1; |
280 | *flist_p = NULL; | |
281 | return NULL; | |
d4d6646a WD |
282 | } |
283 | ||
aadc84d3 WD |
284 | /* Only called if FLAG_HLINKED is set and FLAG_HLINK_FIRST is not. Returns: |
285 | * 0 = process the file, 1 = skip the file, -1 = error occurred. */ | |
c55fb5e1 | 286 | int hard_link_check(struct file_struct *file, int ndx, char *fname, |
13710874 | 287 | int statret, stat_x *sxp, int itemizing, |
aadc84d3 | 288 | enum logcode code) |
d38fc305 | 289 | { |
aadc84d3 | 290 | STRUCT_STAT prev_st; |
d4d6646a WD |
291 | char namebuf[MAXPATHLEN], altbuf[MAXPATHLEN]; |
292 | char *realname, *prev_name; | |
c980db5f WD |
293 | struct file_list *flist; |
294 | int gnum = inc_recurse ? F_HL_GNUM(file) : -1; | |
c9b62cf3 | 295 | int prev_ndx; |
d4d6646a | 296 | |
c9b62cf3 | 297 | prev_name = realname = check_prior(file, gnum, &prev_ndx, &flist); |
d4d6646a WD |
298 | |
299 | if (!prev_name) { | |
c9b62cf3 WD |
300 | struct file_struct *prev_file; |
301 | ||
302 | if (!flist) { | |
303 | /* The previous file was skipped, so this one is | |
304 | * treated as if it were the first in its group. */ | |
56ac8123 WD |
305 | if (DEBUG_GTE(HLINK, 2)) { |
306 | rprintf(FINFO, "hlink for %d (%s,%d): virtual first\n", | |
307 | ndx, f_name(file, NULL), gnum); | |
308 | } | |
c9b62cf3 WD |
309 | return 0; |
310 | } | |
311 | ||
312 | prev_file = flist->files[prev_ndx - flist->ndx_start]; | |
d4d6646a | 313 | |
5288be3a | 314 | /* Is the previous link not complete yet? */ |
d4d6646a WD |
315 | if (!(prev_file->flags & FLAG_HLINK_DONE)) { |
316 | /* Is the previous link being transferred? */ | |
317 | if (prev_file->flags & FLAG_FILE_SENT) { | |
5288be3a WD |
318 | /* Add ourselves to the list of files that will |
319 | * be updated when the transfer completes, and | |
320 | * mark ourself as waiting for the transfer. */ | |
d4d6646a WD |
321 | F_HL_PREV(file) = F_HL_PREV(prev_file); |
322 | F_HL_PREV(prev_file) = ndx; | |
323 | file->flags |= FLAG_FILE_SENT; | |
324 | cur_flist->in_progress++; | |
56ac8123 WD |
325 | if (DEBUG_GTE(HLINK, 2)) { |
326 | rprintf(FINFO, "hlink for %d (%s,%d): waiting for %d\n", | |
327 | ndx, f_name(file, NULL), gnum, F_HL_PREV(file)); | |
328 | } | |
d4d6646a WD |
329 | return 1; |
330 | } | |
56ac8123 WD |
331 | if (DEBUG_GTE(HLINK, 2)) { |
332 | rprintf(FINFO, "hlink for %d (%s,%d): looking for a leader\n", | |
333 | ndx, f_name(file, NULL), gnum); | |
334 | } | |
d4d6646a | 335 | return 0; |
6cbde57d | 336 | } |
aadc84d3 | 337 | |
d4d6646a WD |
338 | /* There is a finished file to link with! */ |
339 | if (!(prev_file->flags & FLAG_HLINK_FIRST)) { | |
c980db5f | 340 | /* The previous previous is FIRST when prev is not. */ |
c9b62cf3 | 341 | prev_name = realname = check_prior(prev_file, gnum, &prev_ndx, &flist); |
c980db5f | 342 | /* Update our previous pointer to point to the FIRST. */ |
d4d6646a WD |
343 | F_HL_PREV(file) = prev_ndx; |
344 | } | |
c980db5f WD |
345 | |
346 | if (!prev_name) { | |
347 | int alt_dest; | |
348 | ||
56ac8123 | 349 | assert(flist != NULL); |
c980db5f WD |
350 | prev_file = flist->files[prev_ndx - flist->ndx_start]; |
351 | /* F_HL_PREV() is alt_dest value when DONE && FIRST. */ | |
352 | alt_dest = F_HL_PREV(prev_file); | |
56ac8123 WD |
353 | if (DEBUG_GTE(HLINK, 2)) { |
354 | rprintf(FINFO, "hlink for %d (%s,%d): found flist match (alt %d)\n", | |
355 | ndx, f_name(file, NULL), gnum, alt_dest); | |
356 | } | |
c980db5f WD |
357 | |
358 | if (alt_dest >= 0 && dry_run) { | |
359 | pathjoin(namebuf, MAXPATHLEN, basis_dir[alt_dest], | |
360 | f_name(prev_file, NULL)); | |
361 | prev_name = namebuf; | |
362 | realname = f_name(prev_file, altbuf); | |
363 | } else { | |
364 | prev_name = f_name(prev_file, namebuf); | |
365 | realname = prev_name; | |
366 | } | |
d4d6646a | 367 | } |
aadc84d3 WD |
368 | } |
369 | ||
56ac8123 WD |
370 | if (DEBUG_GTE(HLINK, 2)) { |
371 | rprintf(FINFO, "hlink for %d (%s,%d): leader is %d (%s)\n", | |
372 | ndx, f_name(file, NULL), gnum, prev_ndx, prev_name); | |
373 | } | |
374 | ||
aadc84d3 | 375 | if (link_stat(prev_name, &prev_st, 0) < 0) { |
b15fa9bd WD |
376 | if (!dry_run || errno != ENOENT) { |
377 | rsyserr(FERROR_XFER, errno, "stat %s failed", full_fname(prev_name)); | |
378 | return -1; | |
379 | } | |
380 | /* A new hard-link will get a new dev & inode, so approximate | |
381 | * those values in dry-run mode by zeroing them. */ | |
382 | memset(&prev_st, 0, sizeof prev_st); | |
aadc84d3 WD |
383 | } |
384 | ||
385 | if (statret < 0 && basis_dir[0] != NULL) { | |
386 | /* If we match an alt-dest item, we don't output this as a change. */ | |
387 | char cmpbuf[MAXPATHLEN]; | |
13710874 | 388 | stat_x alt_sx; |
aadc84d3 | 389 | int j = 0; |
09ca0d15 | 390 | init_stat_x(&alt_sx); |
aadc84d3 WD |
391 | do { |
392 | pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname); | |
1c3344a1 | 393 | if (link_stat(cmpbuf, &alt_sx.st, 0) < 0) |
aadc84d3 | 394 | continue; |
1d6c9676 | 395 | if (alt_dest_type == LINK_DEST) { |
1c3344a1 WD |
396 | if (prev_st.st_dev != alt_sx.st.st_dev |
397 | || prev_st.st_ino != alt_sx.st.st_ino) | |
aadc84d3 WD |
398 | continue; |
399 | statret = 1; | |
1aa343e8 | 400 | if (stdout_format_has_i == 0 |
951e826b | 401 | || (!INFO_GTE(NAME, 2) && stdout_format_has_i < 2)) { |
1aa343e8 | 402 | itemizing = 0; |
aadc84d3 | 403 | code = FNONE; |
951e826b | 404 | if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) |
aadc84d3 WD |
405 | rprintf(FCLIENT, "%s is uptodate\n", fname); |
406 | } | |
407 | break; | |
541b23d1 | 408 | } |
d2a97a7a | 409 | if (!quick_check_ok(FT_REG, cmpbuf, file, &alt_sx.st)) |
aadc84d3 WD |
410 | continue; |
411 | statret = 1; | |
1c3344a1 | 412 | if (unchanged_attrs(cmpbuf, file, &alt_sx)) |
aadc84d3 WD |
413 | break; |
414 | } while (basis_dir[++j] != NULL); | |
1c3344a1 WD |
415 | if (statret == 1) { |
416 | sxp->st = alt_sx.st; | |
417 | #ifdef SUPPORT_ACLS | |
418 | if (preserve_acls && !S_ISLNK(file->mode)) { | |
315c2152 WD |
419 | free_acl(sxp); |
420 | if (!ACL_READY(alt_sx)) | |
1c3344a1 WD |
421 | get_acl(cmpbuf, sxp); |
422 | else { | |
423 | sxp->acc_acl = alt_sx.acc_acl; | |
424 | sxp->def_acl = alt_sx.def_acl; | |
315c2152 | 425 | alt_sx.acc_acl = alt_sx.def_acl = NULL; |
1c3344a1 WD |
426 | } |
427 | } | |
428 | #endif | |
315c2152 WD |
429 | #ifdef SUPPORT_XATTRS |
430 | if (preserve_xattrs) { | |
431 | free_xattr(sxp); | |
432 | if (!XATTR_READY(alt_sx)) | |
433 | get_xattr(cmpbuf, sxp); | |
434 | else { | |
435 | sxp->xattr = alt_sx.xattr; | |
436 | alt_sx.xattr = NULL; | |
437 | } | |
438 | } | |
439 | #endif | |
d42e7181 WD |
440 | } else |
441 | free_stat_x(&alt_sx); | |
d38fc305 | 442 | } |
aadc84d3 | 443 | |
1c3344a1 | 444 | if (maybe_hard_link(file, ndx, fname, statret, sxp, prev_name, &prev_st, |
aadc84d3 WD |
445 | realname, itemizing, code) < 0) |
446 | return -1; | |
447 | ||
448 | if (remove_source_files == 1 && do_xfers) | |
5183c0d6 | 449 | send_msg_success(fname, ndx); |
aadc84d3 WD |
450 | |
451 | return 1; | |
d38fc305 WD |
452 | } |
453 | ||
aadc84d3 WD |
454 | int hard_link_one(struct file_struct *file, const char *fname, |
455 | const char *oldname, int terse) | |
a16bbc39 | 456 | { |
aadc84d3 WD |
457 | if (do_link(oldname, fname) < 0) { |
458 | enum logcode code; | |
3cd5301f | 459 | if (terse) { |
951e826b | 460 | if (!INFO_GTE(NAME, 1)) |
e96c7777 | 461 | return 0; |
3cd5301f WD |
462 | code = FINFO; |
463 | } else | |
3f0211b6 | 464 | code = FERROR_XFER; |
3cd5301f | 465 | rsyserr(code, errno, "link %s => %s failed", |
aadc84d3 WD |
466 | full_fname(fname), oldname); |
467 | return 0; | |
9f2e3c3f WD |
468 | } |
469 | ||
aadc84d3 WD |
470 | file->flags |= FLAG_HLINK_DONE; |
471 | ||
472 | return 1; | |
a16bbc39 | 473 | } |
fae5bb31 | 474 | |
c980db5f | 475 | void finish_hard_link(struct file_struct *file, const char *fname, int fin_ndx, |
aadc84d3 WD |
476 | STRUCT_STAT *stp, int itemizing, enum logcode code, |
477 | int alt_dest) | |
dc5ddbcc | 478 | { |
13710874 | 479 | stat_x prev_sx; |
1c3344a1 | 480 | STRUCT_STAT st; |
fdf74bed | 481 | char prev_name[MAXPATHLEN], alt_name[MAXPATHLEN]; |
aadc84d3 | 482 | const char *our_name; |
d4d6646a | 483 | struct file_list *flist; |
aadc84d3 WD |
484 | int prev_statret, ndx, prev_ndx = F_HL_PREV(file); |
485 | ||
486 | if (stp == NULL && prev_ndx >= 0) { | |
b55115ec | 487 | if (link_stat(fname, &st, 0) < 0 && !dry_run) { |
3f0211b6 | 488 | rsyserr(FERROR_XFER, errno, "stat %s failed", |
aadc84d3 WD |
489 | full_fname(fname)); |
490 | return; | |
9f2e3c3f | 491 | } |
aadc84d3 | 492 | stp = &st; |
9f2e3c3f | 493 | } |
aadc84d3 WD |
494 | |
495 | /* FIRST combined with DONE means we were the first to get done. */ | |
496 | file->flags |= FLAG_HLINK_FIRST | FLAG_HLINK_DONE; | |
497 | F_HL_PREV(file) = alt_dest; | |
498 | if (alt_dest >= 0 && dry_run) { | |
499 | pathjoin(alt_name, MAXPATHLEN, basis_dir[alt_dest], | |
500 | f_name(file, NULL)); | |
501 | our_name = alt_name; | |
502 | } else | |
503 | our_name = fname; | |
504 | ||
09ca0d15 | 505 | init_stat_x(&prev_sx); |
1c3344a1 | 506 | |
aadc84d3 | 507 | while ((ndx = prev_ndx) >= 0) { |
1c3344a1 | 508 | int val; |
e982d591 | 509 | flist = flist_for_ndx(ndx, "finish_hard_link"); |
d4d6646a | 510 | file = flist->files[ndx - flist->ndx_start]; |
aadc84d3 WD |
511 | file->flags = (file->flags & ~FLAG_HLINK_FIRST) | FLAG_HLINK_DONE; |
512 | prev_ndx = F_HL_PREV(file); | |
c980db5f | 513 | F_HL_PREV(file) = fin_ndx; |
fdf74bed | 514 | prev_statret = link_stat(f_name(file, prev_name), &prev_sx.st, 0); |
1c3344a1 WD |
515 | val = maybe_hard_link(file, ndx, prev_name, prev_statret, &prev_sx, |
516 | our_name, stp, fname, itemizing, code); | |
d4d6646a | 517 | flist->in_progress--; |
d42e7181 | 518 | free_stat_x(&prev_sx); |
1c3344a1 | 519 | if (val < 0) |
1d5cda22 | 520 | continue; |
663b2857 | 521 | if (remove_source_files == 1 && do_xfers) |
5183c0d6 | 522 | send_msg_success(fname, ndx); |
aadc84d3 | 523 | } |
d4d6646a WD |
524 | |
525 | if (inc_recurse) { | |
526 | int gnum = F_HL_GNUM(file); | |
f8005578 | 527 | struct ht_int32_node *node = hashtable_find(prior_hlinks, gnum, NULL); |
c3541d30 WD |
528 | if (node == NULL) { |
529 | rprintf(FERROR, "Unable to find a hlink node for %d (%s)\n", gnum, f_name(file, prev_name)); | |
530 | exit_cleanup(RERR_MESSAGEIO); | |
531 | } | |
532 | if (node->data == NULL) { | |
533 | rprintf(FERROR, "Hlink node data for %d is NULL (%s)\n", gnum, f_name(file, prev_name)); | |
534 | exit_cleanup(RERR_MESSAGEIO); | |
535 | } | |
18070203 WD |
536 | if (CVAL(node->data, 0) != 0) { |
537 | rprintf(FERROR, "Hlink node data for %d already has path=%s (%s)\n", | |
538 | gnum, (char*)node->data, f_name(file, prev_name)); | |
539 | exit_cleanup(RERR_MESSAGEIO); | |
540 | } | |
d4d6646a | 541 | free(node->data); |
11eb67ee | 542 | node->data = strdup(our_name); |
d4d6646a | 543 | } |
dc5ddbcc | 544 | } |
c9b62cf3 WD |
545 | |
546 | int skip_hard_link(struct file_struct *file, struct file_list **flist_p) | |
547 | { | |
548 | struct file_list *flist; | |
549 | int prev_ndx; | |
550 | ||
551 | file->flags |= FLAG_SKIP_HLINK; | |
552 | if (!(file->flags & FLAG_HLINK_LAST)) | |
553 | return -1; | |
554 | ||
555 | check_prior(file, F_HL_GNUM(file), &prev_ndx, &flist); | |
556 | if (prev_ndx >= 0) { | |
557 | file = flist->files[prev_ndx - flist->ndx_start]; | |
558 | if (file->flags & (FLAG_HLINK_DONE|FLAG_FILE_SENT)) | |
559 | return -1; | |
560 | file->flags |= FLAG_HLINK_LAST; | |
561 | *flist_p = flist; | |
562 | } | |
563 | ||
564 | return prev_ndx; | |
565 | } | |
a2ebbffc | 566 | #endif |