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;
40 static struct delete_list {
44 static int dlist_len, dlist_alloc_len;
47 /* yuck! This function wouldn't have been necessary if I had the sorting
48 algorithm right. Unfortunately fixing the sorting algorithm would introduce
49 a backward incompatibility as file list indexes are sent over the link.
51 static int delete_already_done(struct file_list *flist,int j)
56 if (link_stat(f_name(flist->files[j]), &st)) return 1;
58 for (i=0;i<dlist_len;i++) {
59 if (st.st_ino == delete_list[i].inode &&
60 st.st_dev == delete_list[i].dev)
67 static void add_delete_entry(struct file_struct *file)
69 if (dlist_len == dlist_alloc_len) {
70 dlist_alloc_len += 1024;
71 delete_list = (struct delete_list *)Realloc(delete_list, sizeof(delete_list[0])*dlist_alloc_len);
72 if (!delete_list) out_of_memory("add_delete_entry");
75 delete_list[dlist_len].dev = file->dev;
76 delete_list[dlist_len].inode = file->inode;
80 rprintf(FINFO,"added %s to delete list\n", f_name(file));
83 static void delete_one(struct file_struct *f)
85 if (!S_ISDIR(f->mode)) {
86 if (robust_unlink(f_name(f)) != 0) {
87 rprintf(FERROR,"unlink %s : %s\n",f_name(f),strerror(errno));
89 rprintf(FINFO,"deleting %s\n",f_name(f));
92 if (do_rmdir(f_name(f)) != 0) {
93 if (errno != ENOTEMPTY && errno != EEXIST)
94 rprintf(FERROR,"rmdir %s : %s\n",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 static void delete_files(struct file_list *flist)
109 struct file_list *local_file_list;
112 extern int module_id;
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 (!local_file_list->files[i]->basename) continue;
141 if (remote_version < 19 &&
142 S_ISDIR(local_file_list->files[i]->mode))
143 add_delete_entry(local_file_list->files[i]);
144 if (-1 == flist_find(flist,local_file_list->files[i])) {
145 char *f = f_name(local_file_list->files[i]);
146 int k = strlen(f) - strlen(backup_suffix);
147 if (make_backups && ((k <= 0) ||
148 (strcmp(f+k,backup_suffix) != 0))) {
149 (void) make_backup(f);
151 delete_one(local_file_list->files[i]);
155 flist_free(local_file_list);
161 static int get_tmpname(char *fnametmp, char *fname)
167 f = strrchr(fname,'/');
172 if (strlen(tmpdir)+strlen(f)+10 > MAXPATHLEN) {
173 rprintf(FERROR,"filename too long\n");
176 slprintf(fnametmp,MAXPATHLEN, "%s/.%s.XXXXXX",tmpdir,f);
180 f = strrchr(fname,'/');
182 if (strlen(fname)+9 > MAXPATHLEN) {
183 rprintf(FERROR,"filename too long\n");
189 slprintf(fnametmp,MAXPATHLEN,"%s/.%s.XXXXXX",
193 slprintf(fnametmp,MAXPATHLEN,".%s.XXXXXX",fname);
200 static int receive_data(int f_in,struct map_struct *buf,int fd,char *fname,
203 int i,n,remainder,len,count;
207 static char file_sum1[MD4_SUM_LENGTH];
208 static char file_sum2[MD4_SUM_LENGTH];
211 count = read_int(f_in);
213 remainder = read_int(f_in);
217 for (i=recv_token(f_in,&data); i != 0; i=recv_token(f_in,&data)) {
219 show_progress(offset, total_size);
222 extern int cleanup_got_literal;
225 rprintf(FINFO,"data recv %d at %d\n",
229 stats.literal_data += i;
230 cleanup_got_literal = 1;
234 if (fd != -1 && write_file(fd,data,i) != i) {
235 rprintf(FERROR,"write failed on %s : %s\n",fname,strerror(errno));
236 exit_cleanup(RERR_FILEIO);
245 if (i == count-1 && remainder != 0)
248 stats.matched_data += len;
251 rprintf(FINFO,"chunk[%d] of size %d at %d offset=%d\n",
252 i,len,(int)offset2,(int)offset);
254 map = map_ptr(buf,offset2,len);
259 if (fd != -1 && write_file(fd,map,len) != len) {
260 rprintf(FERROR,"write failed on %s : %s\n",
261 fname,strerror(errno));
262 exit_cleanup(RERR_FILEIO);
269 if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
270 rprintf(FERROR,"write failed on %s : %s\n",
271 fname,strerror(errno));
272 exit_cleanup(RERR_FILEIO);
277 if (remote_version >= 14) {
278 read_buf(f_in,file_sum2,MD4_SUM_LENGTH);
280 rprintf(FINFO,"got file_sum\n");
283 memcmp(file_sum1,file_sum2,MD4_SUM_LENGTH) != 0) {
292 int recv_files(int f_in,struct file_list *flist,char *local_name,int f_gen)
297 char fnametmp[MAXPATHLEN];
299 char fnamecmpbuf[MAXPATHLEN];
300 struct map_struct *buf;
302 struct file_struct *file;
305 extern struct stats stats;
306 extern int preserve_perms;
307 struct stats initial_stats;
310 rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
313 if (recurse && delete_mode && !local_name && flist->count>0) {
322 if (phase==0 && remote_version >= 13) {
324 csum_length = SUM_LENGTH;
326 rprintf(FINFO,"recv_files phase=%d\n",phase);
333 if (i < 0 || i >= flist->count) {
334 rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n",
336 exit_cleanup(RERR_PROTOCOL);
339 file = flist->files[i];
340 fname = f_name(file);
342 stats.num_transferred_files++;
343 stats.total_transferred_size += file->length;
350 log_transfer(file, fname);
355 initial_stats = stats;
358 rprintf(FINFO,"recv_files(%s)\n",fname);
363 fd1 = do_open(fnamecmp, O_RDONLY, 0);
365 if ((fd1 == -1) && (compare_dest != NULL)) {
366 /* try the file at compare_dest instead */
367 slprintf(fnamecmpbuf,MAXPATHLEN,"%s/%s",
369 fnamecmp = fnamecmpbuf;
370 fd1 = do_open(fnamecmp, O_RDONLY, 0);
373 if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
374 rprintf(FERROR,"fstat %s : %s\n",fnamecmp,strerror(errno));
375 receive_data(f_in,NULL,-1,NULL,file->length);
380 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
381 rprintf(FERROR,"%s : not a regular file (recv_files)\n",fnamecmp);
382 receive_data(f_in,NULL,-1,NULL,file->length);
387 if (fd1 != -1 && !preserve_perms) {
388 /* if the file exists already and we aren't perserving
389 presmissions then act as though the remote end sent
390 us the file permissions we already have */
391 file->mode = st.st_mode;
394 if (fd1 != -1 && st.st_size > 0) {
395 buf = map_file(fd1,st.st_size);
397 rprintf(FINFO,"recv mapped %s of size %d\n",fnamecmp,(int)st.st_size);
402 if (!get_tmpname(fnametmp,fname)) {
403 if (buf) unmap_file(buf);
404 if (fd1 != -1) close(fd1);
408 /* mktemp is deliberately used here instead of mkstemp.
409 because O_EXCL is used on the open, the race condition
410 is not a problem or a security hole, and we want to
411 control the access permissions on the created file. */
412 if (NULL == do_mktemp(fnametmp)) {
413 rprintf(FERROR,"mktemp %s failed\n",fnametmp);
414 receive_data(f_in,buf,-1,NULL,file->length);
415 if (buf) unmap_file(buf);
416 if (fd1 != -1) close(fd1);
420 /* we initially set the perms without the
421 setuid/setgid bits to ensure that there is no race
422 condition. They are then correctly updated after
423 the lchown. Thanks to snabb@epipe.fi for pointing
424 this out. We also set it initially without group
425 access because of a similar race condition. */
426 fd2 = do_open(fnametmp,O_WRONLY|O_CREAT|O_EXCL,
427 file->mode & INITACCESSPERMS);
429 /* in most cases parent directories will already exist
430 because their information should have been previously
431 transferred, but that may not be the case with -R */
432 if (fd2 == -1 && relative_paths && errno == ENOENT &&
433 create_directory_path(fnametmp) == 0) {
434 fd2 = do_open(fnametmp,O_WRONLY|O_CREAT|O_EXCL,
435 file->mode & INITACCESSPERMS);
438 rprintf(FERROR,"cannot create %s : %s\n",fnametmp,strerror(errno));
439 receive_data(f_in,buf,-1,NULL,file->length);
440 if (buf) unmap_file(buf);
441 if (fd1 != -1) close(fd1);
445 cleanup_set(fnametmp, fname, file, buf, fd1, fd2);
448 log_transfer(file, fname);
452 recv_ok = receive_data(f_in,buf,fd2,fname,file->length);
454 log_recv(file, &initial_stats);
456 if (buf) unmap_file(buf);
463 rprintf(FINFO,"renaming %s to %s\n",fnametmp,fname);
465 finish_transfer(fname, fnametmp, file);
470 if (csum_length == SUM_LENGTH) {
471 rprintf(FERROR,"ERROR: file corruption in %s. File changed during transfer?\n",
475 rprintf(FINFO,"redoing %s(%d)\n",fname,i);
481 if (preserve_hard_links)
482 do_hard_links(flist);
484 /* now we need to fix any directory permissions that were
485 modified during the transfer */
486 for (i = 0; i < flist->count; i++) {
487 file = flist->files[i];
488 if (!file->basename || !S_ISDIR(file->mode)) continue;
489 recv_generator(local_name?local_name:f_name(file),flist,i,-1);
493 rprintf(FINFO,"recv_files finished\n");