1 /* -*- c-file-style: "linux" -*-
3 Copyright (C) 1996-2000 by Andrew Tridgell
4 Copyright (C) Paul Mackerras 1996
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 extern int delete_mode;
26 extern int remote_version;
27 extern int csum_length;
28 extern struct stats stats;
31 extern int relative_paths;
32 extern int preserve_hard_links;
33 extern int cvs_exclude;
36 extern char *compare_dest;
37 extern int make_backups;
38 extern char *backup_suffix;
40 static struct delete_list {
44 static int dlist_len, dlist_alloc_len;
46 /* yuck! This function wouldn't have been necessary if I had the sorting
47 algorithm right. Unfortunately fixing the sorting algorithm would introduce
48 a backward incompatibility as file list indexes are sent over the link.
50 static int delete_already_done(struct file_list *flist,int j)
55 if (link_stat(f_name(flist->files[j]), &st)) return 1;
57 for (i=0;i<dlist_len;i++) {
58 if (st.st_ino == delete_list[i].inode &&
59 st.st_dev == delete_list[i].dev)
66 static void add_delete_entry(struct file_struct *file)
68 if (dlist_len == dlist_alloc_len) {
69 dlist_alloc_len += 1024;
70 delete_list = (struct delete_list *)Realloc(delete_list, sizeof(delete_list[0])*dlist_alloc_len);
71 if (!delete_list) out_of_memory("add_delete_entry");
74 delete_list[dlist_len].dev = file->dev;
75 delete_list[dlist_len].inode = file->inode;
79 rprintf(FINFO,"added %s to delete list\n", f_name(file));
82 static void delete_one(struct file_struct *f)
84 if (!S_ISDIR(f->mode)) {
85 if (robust_unlink(f_name(f)) != 0) {
86 rprintf(FERROR,"delete_one: unlink %s: %s\n",f_name(f),strerror(errno));
88 rprintf(FINFO,"deleting %s\n",f_name(f));
91 if (do_rmdir(f_name(f)) != 0) {
92 if (errno != ENOTEMPTY && errno != EEXIST)
93 rprintf(FERROR,"delete_one: rmdir %s: %s\n",
94 f_name(f), strerror(errno));
96 rprintf(FINFO,"deleting directory %s\n",f_name(f));
104 /* this deletes any files on the receiving side that are not present
105 on the sending side. For version 1.6.4 I have changed the behaviour
106 to match more closely what most people seem to expect of this option */
107 void delete_files(struct file_list *flist)
109 struct file_list *local_file_list;
112 extern int module_id;
113 extern int ignore_errors;
114 extern int max_delete;
115 static int deletion_count;
120 if (io_error && !(lp_ignore_errors(module_id) || ignore_errors)) {
121 rprintf(FINFO,"IO error encountered - skipping file deletion\n");
125 for (j=0;j<flist->count;j++) {
126 if (!S_ISDIR(flist->files[j]->mode) ||
127 !(flist->files[j]->flags & FLAG_DELETE)) continue;
129 if (remote_version < 19 &&
130 delete_already_done(flist, j)) continue;
132 name = strdup(f_name(flist->files[j]));
134 if (!(local_file_list = send_file_list(-1,1,&name))) {
140 rprintf(FINFO,"deleting in %s\n", name);
142 for (i=local_file_list->count-1;i>=0;i--) {
143 if (max_delete && deletion_count > max_delete) break;
144 if (!local_file_list->files[i]->basename) continue;
145 if (remote_version < 19 &&
146 S_ISDIR(local_file_list->files[i]->mode))
147 add_delete_entry(local_file_list->files[i]);
148 if (-1 == flist_find(flist,local_file_list->files[i])) {
149 char *f = f_name(local_file_list->files[i]);
150 int k = strlen(f) - strlen(backup_suffix);
151 /* Hi Andrew, do we really need to play with backup_suffix here? */
152 if (make_backups && ((k <= 0) ||
153 (strcmp(f+k,backup_suffix) != 0))) {
154 (void) make_backup(f);
157 delete_one(local_file_list->files[i]);
161 flist_free(local_file_list);
167 static int get_tmpname(char *fnametmp, char *fname)
173 f = strrchr(fname,'/');
178 if (strlen(tmpdir)+strlen(f)+10 > MAXPATHLEN) {
179 rprintf(FERROR,"filename too long\n");
182 slprintf(fnametmp,MAXPATHLEN, "%s/.%s.XXXXXX",tmpdir,f);
186 f = strrchr(fname,'/');
188 if (strlen(fname)+9 > MAXPATHLEN) {
189 rprintf(FERROR,"filename too long\n");
195 slprintf(fnametmp,MAXPATHLEN,"%s/.%s.XXXXXX",
199 slprintf(fnametmp,MAXPATHLEN,".%s.XXXXXX",fname);
206 static int receive_data(int f_in,struct map_struct *buf,int fd,char *fname,
209 int i,n,remainder,len,count;
213 static char file_sum1[MD4_SUM_LENGTH];
214 static char file_sum2[MD4_SUM_LENGTH];
217 count = read_int(f_in);
219 remainder = read_int(f_in);
223 for (i=recv_token(f_in,&data); i != 0; i=recv_token(f_in,&data)) {
225 show_progress(offset, total_size);
228 extern int cleanup_got_literal;
231 rprintf(FINFO,"data recv %d at %.0f\n",
235 stats.literal_data += i;
236 cleanup_got_literal = 1;
240 if (fd != -1 && write_file(fd,data,i) != i) {
241 rprintf(FERROR,"write failed on %s : %s\n",fname,strerror(errno));
242 exit_cleanup(RERR_FILEIO);
249 offset2 = i*(OFF_T)n;
251 if (i == count-1 && remainder != 0)
254 stats.matched_data += len;
257 rprintf(FINFO,"chunk[%d] of size %d at %.0f offset=%.0f\n",
258 i,len,(double)offset2,(double)offset);
261 map = map_ptr(buf,offset2,len);
267 if (fd != -1 && write_file(fd,map,len) != len) {
268 rprintf(FERROR,"write failed on %s : %s\n",
269 fname,strerror(errno));
270 exit_cleanup(RERR_FILEIO);
275 end_progress(total_size);
277 if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
278 rprintf(FERROR,"write failed on %s : %s\n",
279 fname,strerror(errno));
280 exit_cleanup(RERR_FILEIO);
285 if (remote_version >= 14) {
286 read_buf(f_in,file_sum2,MD4_SUM_LENGTH);
288 rprintf(FINFO,"got file_sum\n");
291 memcmp(file_sum1,file_sum2,MD4_SUM_LENGTH) != 0) {
299 /* main routine for receiver process. Receiver process runs on the
300 same host as the generator process. */
302 int recv_files(int f_in,struct file_list *flist,char *local_name,int f_gen)
307 char fnametmp[MAXPATHLEN];
309 char fnamecmpbuf[MAXPATHLEN];
310 struct map_struct *buf;
312 struct file_struct *file;
315 extern struct stats stats;
316 extern int preserve_perms;
317 extern int delete_after;
318 struct stats initial_stats;
321 rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
329 if (phase==0 && remote_version >= 13) {
331 csum_length = SUM_LENGTH;
333 rprintf(FINFO,"recv_files phase=%d\n",phase);
340 if (i < 0 || i >= flist->count) {
341 rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n",
343 exit_cleanup(RERR_PROTOCOL);
346 file = flist->files[i];
347 fname = f_name(file);
349 stats.num_transferred_files++;
350 stats.total_transferred_size += file->length;
357 log_transfer(file, fname);
362 initial_stats = stats;
365 rprintf(FINFO,"recv_files(%s)\n",fname);
370 fd1 = do_open(fnamecmp, O_RDONLY, 0);
372 if ((fd1 == -1) && (compare_dest != NULL)) {
373 /* try the file at compare_dest instead */
374 slprintf(fnamecmpbuf,MAXPATHLEN,"%s/%s",
376 fnamecmp = fnamecmpbuf;
377 fd1 = do_open(fnamecmp, O_RDONLY, 0);
380 if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
381 rprintf(FERROR,"fstat %s : %s\n",fnamecmp,strerror(errno));
382 receive_data(f_in,NULL,-1,NULL,file->length);
387 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
388 rprintf(FERROR,"%s : not a regular file (recv_files)\n",fnamecmp);
389 receive_data(f_in,NULL,-1,NULL,file->length);
394 if (fd1 != -1 && !preserve_perms) {
395 /* if the file exists already and we aren't perserving
396 presmissions then act as though the remote end sent
397 us the file permissions we already have */
398 file->mode = st.st_mode;
401 if (fd1 != -1 && st.st_size > 0) {
402 buf = map_file(fd1,st.st_size);
404 rprintf(FINFO,"recv mapped %s of size %.0f\n",fnamecmp,(double)st.st_size);
409 if (!get_tmpname(fnametmp,fname)) {
410 if (buf) unmap_file(buf);
411 if (fd1 != -1) close(fd1);
415 /* mktemp is deliberately used here instead of mkstemp.
416 because O_EXCL is used on the open, the race condition
417 is not a problem or a security hole, and we want to
418 control the access permissions on the created file. */
419 if (NULL == do_mktemp(fnametmp)) {
420 rprintf(FERROR,"mktemp %s failed\n",fnametmp);
421 receive_data(f_in,buf,-1,NULL,file->length);
422 if (buf) unmap_file(buf);
423 if (fd1 != -1) close(fd1);
427 /* we initially set the perms without the
428 setuid/setgid bits to ensure that there is no race
429 condition. They are then correctly updated after
430 the lchown. Thanks to snabb@epipe.fi for pointing
431 this out. We also set it initially without group
432 access because of a similar race condition. */
433 fd2 = do_open(fnametmp,O_WRONLY|O_CREAT|O_EXCL,
434 file->mode & INITACCESSPERMS);
436 /* in most cases parent directories will already exist
437 because their information should have been previously
438 transferred, but that may not be the case with -R */
439 if (fd2 == -1 && relative_paths && errno == ENOENT &&
440 create_directory_path(fnametmp) == 0) {
441 fd2 = do_open(fnametmp,O_WRONLY|O_CREAT|O_EXCL,
442 file->mode & INITACCESSPERMS);
445 rprintf(FERROR,"cannot create %s : %s\n",fnametmp,strerror(errno));
446 receive_data(f_in,buf,-1,NULL,file->length);
447 if (buf) unmap_file(buf);
448 if (fd1 != -1) close(fd1);
452 cleanup_set(fnametmp, fname, file, buf, fd1, fd2);
455 log_transfer(file, fname);
459 recv_ok = receive_data(f_in,buf,fd2,fname,file->length);
461 log_recv(file, &initial_stats);
463 if (buf) unmap_file(buf);
470 rprintf(FINFO,"renaming %s to %s\n",fnametmp,fname);
472 finish_transfer(fname, fnametmp, file);
477 if (csum_length == SUM_LENGTH) {
478 rprintf(FERROR,"ERROR: file corruption in %s. File changed during transfer?\n",
482 rprintf(FINFO,"redoing %s(%d)\n",fname,i);
489 if (recurse && delete_mode && !local_name && flist->count>0) {
494 if (preserve_hard_links)
495 do_hard_links(flist);
497 /* now we need to fix any directory permissions that were
498 modified during the transfer */
499 for (i = 0; i < flist->count; i++) {
500 file = flist->files[i];
501 if (!file->basename || !S_ISDIR(file->mode)) continue;
502 recv_generator(local_name?local_name:f_name(file),flist,i,-1);
506 rprintf(FINFO,"recv_files finished\n");