2 Copyright (C) Andrew Tridgell 1996
3 Copyright (C) Paul Mackerras 1996
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 extern int delete_mode;
25 extern int remote_version;
26 extern int csum_length;
27 extern struct stats stats;
30 extern int relative_paths;
31 extern int preserve_hard_links;
32 extern int cvs_exclude;
35 extern char *compare_dest;
36 extern int make_backups;
37 extern char *backup_suffix;
39 static struct delete_list {
43 static int dlist_len, dlist_alloc_len;
45 /* yuck! This function wouldn't have been necessary if I had the sorting
46 algorithm right. Unfortunately fixing the sorting algorithm would introduce
47 a backward incompatibility as file list indexes are sent over the link.
49 static int delete_already_done(struct file_list *flist,int j)
54 if (link_stat(f_name(flist->files[j]), &st)) return 1;
56 for (i=0;i<dlist_len;i++) {
57 if (st.st_ino == delete_list[i].inode &&
58 st.st_dev == delete_list[i].dev)
65 static void add_delete_entry(struct file_struct *file)
67 if (dlist_len == dlist_alloc_len) {
68 dlist_alloc_len += 1024;
69 delete_list = (struct delete_list *)Realloc(delete_list, sizeof(delete_list[0])*dlist_alloc_len);
70 if (!delete_list) out_of_memory("add_delete_entry");
73 delete_list[dlist_len].dev = file->dev;
74 delete_list[dlist_len].inode = file->inode;
78 rprintf(FINFO,"added %s to delete list\n", f_name(file));
81 static void delete_one(struct file_struct *f)
83 if (!S_ISDIR(f->mode)) {
84 if (robust_unlink(f_name(f)) != 0) {
85 rprintf(FERROR,"unlink %s : %s\n",f_name(f),strerror(errno));
87 rprintf(FINFO,"deleting %s\n",f_name(f));
90 if (do_rmdir(f_name(f)) != 0) {
91 if (errno != ENOTEMPTY && errno != EEXIST)
92 rprintf(FERROR,"rmdir %s : %s\n",f_name(f),strerror(errno));
94 rprintf(FINFO,"deleting directory %s\n",f_name(f));
102 /* this deletes any files on the receiving side that are not present
103 on the sending side. For version 1.6.4 I have changed the behaviour
104 to match more closely what most people seem to expect of this option */
105 void delete_files(struct file_list *flist)
107 struct file_list *local_file_list;
110 extern int module_id;
111 extern int max_delete;
112 static int deletion_count;
117 if (io_error && !lp_ignore_errors(module_id)) {
118 rprintf(FINFO,"IO error encountered - skipping file deletion\n");
122 for (j=0;j<flist->count;j++) {
123 if (!S_ISDIR(flist->files[j]->mode) ||
124 !(flist->files[j]->flags & FLAG_DELETE)) continue;
126 if (remote_version < 19 &&
127 delete_already_done(flist, j)) continue;
129 name = strdup(f_name(flist->files[j]));
131 if (!(local_file_list = send_file_list(-1,1,&name))) {
137 rprintf(FINFO,"deleting in %s\n", name);
139 for (i=local_file_list->count-1;i>=0;i--) {
140 if (max_delete && deletion_count > max_delete) break;
141 if (!local_file_list->files[i]->basename) continue;
142 if (remote_version < 19 &&
143 S_ISDIR(local_file_list->files[i]->mode))
144 add_delete_entry(local_file_list->files[i]);
145 if (-1 == flist_find(flist,local_file_list->files[i])) {
146 char *f = f_name(local_file_list->files[i]);
147 int k = strlen(f) - strlen(backup_suffix);
148 /* Hi Andrew, do we really need to play with backup_suffix here? */
149 if (make_backups && ((k <= 0) ||
150 (strcmp(f+k,backup_suffix) != 0))) {
151 (void) make_backup(f);
154 delete_one(local_file_list->files[i]);
158 flist_free(local_file_list);
164 static int get_tmpname(char *fnametmp, char *fname)
170 f = strrchr(fname,'/');
175 if (strlen(tmpdir)+strlen(f)+10 > MAXPATHLEN) {
176 rprintf(FERROR,"filename too long\n");
179 slprintf(fnametmp,MAXPATHLEN, "%s/.%s.XXXXXX",tmpdir,f);
183 f = strrchr(fname,'/');
185 if (strlen(fname)+9 > MAXPATHLEN) {
186 rprintf(FERROR,"filename too long\n");
192 slprintf(fnametmp,MAXPATHLEN,"%s/.%s.XXXXXX",
196 slprintf(fnametmp,MAXPATHLEN,".%s.XXXXXX",fname);
203 static int receive_data(int f_in,struct map_struct *buf,int fd,char *fname,
206 int i,n,remainder,len,count;
210 static char file_sum1[MD4_SUM_LENGTH];
211 static char file_sum2[MD4_SUM_LENGTH];
214 count = read_int(f_in);
216 remainder = read_int(f_in);
220 for (i=recv_token(f_in,&data); i != 0; i=recv_token(f_in,&data)) {
222 show_progress(offset, total_size);
225 extern int cleanup_got_literal;
228 rprintf(FINFO,"data recv %d at %.0f\n",
232 stats.literal_data += i;
233 cleanup_got_literal = 1;
237 if (fd != -1 && write_file(fd,data,i) != i) {
238 rprintf(FERROR,"write failed on %s : %s\n",fname,strerror(errno));
239 exit_cleanup(RERR_FILEIO);
246 offset2 = i*(OFF_T)n;
248 if (i == count-1 && remainder != 0)
251 stats.matched_data += len;
254 rprintf(FINFO,"chunk[%d] of size %d at %.0f offset=%.0f\n",
255 i,len,(double)offset2,(double)offset);
258 map = map_ptr(buf,offset2,len);
264 if (fd != -1 && write_file(fd,map,len) != len) {
265 rprintf(FERROR,"write failed on %s : %s\n",
266 fname,strerror(errno));
267 exit_cleanup(RERR_FILEIO);
272 end_progress(total_size);
274 if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
275 rprintf(FERROR,"write failed on %s : %s\n",
276 fname,strerror(errno));
277 exit_cleanup(RERR_FILEIO);
282 if (remote_version >= 14) {
283 read_buf(f_in,file_sum2,MD4_SUM_LENGTH);
285 rprintf(FINFO,"got file_sum\n");
288 memcmp(file_sum1,file_sum2,MD4_SUM_LENGTH) != 0) {
296 /* main routine for receiver process. Receiver process runs on the
297 same host as the generator process. */
299 int recv_files(int f_in,struct file_list *flist,char *local_name,int f_gen)
304 char fnametmp[MAXPATHLEN];
306 char fnamecmpbuf[MAXPATHLEN];
307 struct map_struct *buf;
309 struct file_struct *file;
312 extern struct stats stats;
313 extern int preserve_perms;
314 extern int delete_after;
315 struct stats initial_stats;
318 rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
326 if (phase==0 && remote_version >= 13) {
328 csum_length = SUM_LENGTH;
330 rprintf(FINFO,"recv_files phase=%d\n",phase);
337 if (i < 0 || i >= flist->count) {
338 rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n",
340 exit_cleanup(RERR_PROTOCOL);
343 file = flist->files[i];
344 fname = f_name(file);
346 stats.num_transferred_files++;
347 stats.total_transferred_size += file->length;
354 log_transfer(file, fname);
359 initial_stats = stats;
362 rprintf(FINFO,"recv_files(%s)\n",fname);
367 fd1 = do_open(fnamecmp, O_RDONLY, 0);
369 if ((fd1 == -1) && (compare_dest != NULL)) {
370 /* try the file at compare_dest instead */
371 slprintf(fnamecmpbuf,MAXPATHLEN,"%s/%s",
373 fnamecmp = fnamecmpbuf;
374 fd1 = do_open(fnamecmp, O_RDONLY, 0);
377 if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
378 rprintf(FERROR,"fstat %s : %s\n",fnamecmp,strerror(errno));
379 receive_data(f_in,NULL,-1,NULL,file->length);
384 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
385 rprintf(FERROR,"%s : not a regular file (recv_files)\n",fnamecmp);
386 receive_data(f_in,NULL,-1,NULL,file->length);
391 if (fd1 != -1 && !preserve_perms) {
392 /* if the file exists already and we aren't perserving
393 presmissions then act as though the remote end sent
394 us the file permissions we already have */
395 file->mode = st.st_mode;
398 if (fd1 != -1 && st.st_size > 0) {
399 buf = map_file(fd1,st.st_size);
401 rprintf(FINFO,"recv mapped %s of size %.0f\n",fnamecmp,(double)st.st_size);
406 if (!get_tmpname(fnametmp,fname)) {
407 if (buf) unmap_file(buf);
408 if (fd1 != -1) close(fd1);
412 /* mktemp is deliberately used here instead of mkstemp.
413 because O_EXCL is used on the open, the race condition
414 is not a problem or a security hole, and we want to
415 control the access permissions on the created file. */
416 if (NULL == do_mktemp(fnametmp)) {
417 rprintf(FERROR,"mktemp %s failed\n",fnametmp);
418 receive_data(f_in,buf,-1,NULL,file->length);
419 if (buf) unmap_file(buf);
420 if (fd1 != -1) close(fd1);
424 /* we initially set the perms without the
425 setuid/setgid bits to ensure that there is no race
426 condition. They are then correctly updated after
427 the lchown. Thanks to snabb@epipe.fi for pointing
428 this out. We also set it initially without group
429 access because of a similar race condition. */
430 fd2 = do_open(fnametmp,O_WRONLY|O_CREAT|O_EXCL,
431 file->mode & INITACCESSPERMS);
433 /* in most cases parent directories will already exist
434 because their information should have been previously
435 transferred, but that may not be the case with -R */
436 if (fd2 == -1 && relative_paths && errno == ENOENT &&
437 create_directory_path(fnametmp) == 0) {
438 fd2 = do_open(fnametmp,O_WRONLY|O_CREAT|O_EXCL,
439 file->mode & INITACCESSPERMS);
442 rprintf(FERROR,"cannot create %s : %s\n",fnametmp,strerror(errno));
443 receive_data(f_in,buf,-1,NULL,file->length);
444 if (buf) unmap_file(buf);
445 if (fd1 != -1) close(fd1);
449 cleanup_set(fnametmp, fname, file, buf, fd1, fd2);
452 log_transfer(file, fname);
456 recv_ok = receive_data(f_in,buf,fd2,fname,file->length);
458 log_recv(file, &initial_stats);
460 if (buf) unmap_file(buf);
467 rprintf(FINFO,"renaming %s to %s\n",fnametmp,fname);
469 finish_transfer(fname, fnametmp, file);
474 if (csum_length == SUM_LENGTH) {
475 rprintf(FERROR,"ERROR: file corruption in %s. File changed during transfer?\n",
479 rprintf(FINFO,"redoing %s(%d)\n",fname,i);
486 if (recurse && delete_mode && !local_name && flist->count>0) {
491 if (preserve_hard_links)
492 do_hard_links(flist);
494 /* now we need to fix any directory permissions that were
495 modified during the transfer */
496 for (i = 0; i < flist->count; i++) {
497 file = flist->files[i];
498 if (!file->basename || !S_ISDIR(file->mode)) continue;
499 recv_generator(local_name?local_name:f_name(file),flist,i,-1);
503 rprintf(FINFO,"recv_files finished\n");