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);
168 * get_tmpname() - create a tmp filename for a given filename
170 * If a tmpdir is defined, use that as the directory to
171 * put it in. Otherwise, the tmp filename is in the same
172 * directory as the given name. Note that there may be no
173 * directory at all in the given name!
175 * The tmp filename is basically the given filename with a
176 * dot prepended, and .XXXXXX appended (for mkstemp() to
177 * put its unique gunk in). Take care to not exceed
178 * either the MAXPATHLEN or NAME_MAX, esp. the last, as
179 * the basename basically becomes 8 chars longer. In that
180 * case, the original name is shortened sufficiently to
183 * Of course, there's no real reason for the tmp name to
184 * look like the original, except to satisfy us humans.
185 * As long as it's unique, rsync will work.
188 static int get_tmpname(char *fnametmp, char *fname)
195 strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
196 length = strlen(fnametmp);
197 fnametmp[length++] = '/';
198 fnametmp[length] = '\0'; /* always NULL terminated */
201 if ((f = strrchr(fname, '/'))) { /* extra () for gcc */
205 strlcpy(fnametmp, fname, length + 1);
206 } /* copy up to and including the slash */
210 fnametmp[length++] = '.';
211 fnametmp[length] = '\0'; /* always NULL terminated */
213 maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8);
217 rprintf(FERROR, "temporary filename too long: %s\n", fname);
222 strlcpy(fnametmp + length, f, maxname);
223 strcat(fnametmp + length, ".XXXXXX");
229 static int receive_data(int f_in,struct map_struct *buf,int fd,char *fname,
233 unsigned int n,remainder,len,count;
237 static char file_sum1[MD4_SUM_LENGTH];
238 static char file_sum2[MD4_SUM_LENGTH];
241 count = read_int(f_in);
243 remainder = read_int(f_in);
247 for (i=recv_token(f_in,&data); i != 0; i=recv_token(f_in,&data)) {
249 show_progress(offset, total_size);
252 extern int cleanup_got_literal;
255 rprintf(FINFO,"data recv %d at %.0f\n",
259 stats.literal_data += i;
260 cleanup_got_literal = 1;
264 if (fd != -1 && write_file(fd,data,i) != i) {
265 rprintf(FERROR,"write failed on %s : %s\n",fname,strerror(errno));
266 exit_cleanup(RERR_FILEIO);
273 offset2 = i*(OFF_T)n;
275 if (i == (int) count-1 && remainder != 0)
278 stats.matched_data += len;
281 rprintf(FINFO,"chunk[%d] of size %d at %.0f offset=%.0f\n",
282 i,len,(double)offset2,(double)offset);
285 map = map_ptr(buf,offset2,len);
291 if (fd != -1 && write_file(fd,map,len) != (int) len) {
292 rprintf(FERROR,"write failed on %s : %s\n",
293 fname,strerror(errno));
294 exit_cleanup(RERR_FILEIO);
299 end_progress(total_size);
301 if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
302 rprintf(FERROR,"write failed on %s : %s\n",
303 fname,strerror(errno));
304 exit_cleanup(RERR_FILEIO);
309 if (remote_version >= 14) {
310 read_buf(f_in,file_sum2,MD4_SUM_LENGTH);
312 rprintf(FINFO,"got file_sum\n");
315 memcmp(file_sum1,file_sum2,MD4_SUM_LENGTH) != 0) {
324 * main routine for receiver process.
326 * Receiver process runs on the same host as the generator process. */
327 int recv_files(int f_in,struct file_list *flist,char *local_name,int f_gen)
332 char template[MAXPATHLEN];
333 char fnametmp[MAXPATHLEN];
335 char fnamecmpbuf[MAXPATHLEN];
336 struct map_struct *buf;
338 struct file_struct *file;
341 extern struct stats stats;
342 extern int preserve_perms;
343 extern int delete_after;
344 extern int orig_umask;
345 struct stats initial_stats;
348 rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
356 if (phase==0 && remote_version >= 13) {
358 csum_length = SUM_LENGTH;
360 rprintf(FINFO,"recv_files phase=%d\n",phase);
367 if (i < 0 || i >= flist->count) {
368 rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n",
370 exit_cleanup(RERR_PROTOCOL);
373 file = flist->files[i];
374 fname = f_name(file);
376 stats.num_transferred_files++;
377 stats.total_transferred_size += file->length;
383 if (!am_server && verbose) { /* log transfer */
384 rprintf(FINFO, "%s\n", fname);
389 initial_stats = stats;
392 rprintf(FINFO,"recv_files(%s)\n",fname);
397 fd1 = do_open(fnamecmp, O_RDONLY, 0);
399 if ((fd1 == -1) && (compare_dest != NULL)) {
400 /* try the file at compare_dest instead */
401 snprintf(fnamecmpbuf,MAXPATHLEN,"%s/%s",
403 fnamecmp = fnamecmpbuf;
404 fd1 = do_open(fnamecmp, O_RDONLY, 0);
407 if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
408 rprintf(FERROR,"fstat %s : %s\n",fnamecmp,strerror(errno));
409 receive_data(f_in,NULL,-1,NULL,file->length);
414 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
415 rprintf(FERROR,"%s : not a regular file (recv_files)\n",fnamecmp);
416 receive_data(f_in,NULL,-1,NULL,file->length);
421 if (fd1 != -1 && !preserve_perms) {
422 /* if the file exists already and we aren't preserving
423 permissions then act as though the remote end sent
424 us the file permissions we already have */
425 file->mode = st.st_mode;
428 if (fd1 != -1 && st.st_size > 0) {
429 buf = map_file(fd1,st.st_size);
431 rprintf(FINFO,"recv mapped %s of size %.0f\n",fnamecmp,(double)st.st_size);
436 if (!get_tmpname(fnametmp,fname)) {
437 if (buf) unmap_file(buf);
438 if (fd1 != -1) close(fd1);
442 strlcpy(template, fnametmp, sizeof(template));
444 /* we initially set the perms without the
445 setuid/setgid bits to ensure that there is no race
446 condition. They are then correctly updated after
447 the lchown. Thanks to snabb@epipe.fi for pointing
448 this out. We also set it initially without group
449 access because of a similar race condition. */
450 fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
452 /* in most cases parent directories will already exist
453 because their information should have been previously
454 transferred, but that may not be the case with -R */
455 if (fd2 == -1 && relative_paths && errno == ENOENT &&
456 create_directory_path(fnametmp, orig_umask) == 0) {
457 strlcpy(fnametmp, template, sizeof(fnametmp));
458 fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
461 rprintf(FERROR,"mkstemp %s failed: %s\n",fnametmp,strerror(errno));
462 receive_data(f_in,buf,-1,NULL,file->length);
463 if (buf) unmap_file(buf);
464 if (fd1 != -1) close(fd1);
468 cleanup_set(fnametmp, fname, file, buf, fd1, fd2);
470 if (!am_server && verbose) { /* log transfer */
471 rprintf(FINFO, "%s\n", fname);
475 recv_ok = receive_data(f_in,buf,fd2,fname,file->length);
477 log_recv(file, &initial_stats);
479 if (buf) unmap_file(buf);
486 rprintf(FINFO,"renaming %s to %s\n",fnametmp,fname);
488 finish_transfer(fname, fnametmp, file);
493 if (csum_length == SUM_LENGTH) {
494 rprintf(FERROR,"ERROR: file corruption in %s. File changed during transfer?\n",
498 rprintf(FINFO,"redoing %s(%d)\n",fname,i);
505 if (recurse && delete_mode && !local_name && flist->count>0) {
510 if (preserve_hard_links)
513 /* now we need to fix any directory permissions that were
514 modified during the transfer */
515 for (i = 0; i < flist->count; i++) {
516 file = flist->files[i];
517 if (!file->basename || !S_ISDIR(file->mode)) continue;
518 recv_generator(local_name?local_name:f_name(file),flist,i,-1);
522 rprintf(FINFO,"recv_files finished\n");