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 int do_progress;
39 extern char *backup_suffix;
41 static struct delete_list {
45 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,"delete_one: 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,"delete_one: rmdir %s: %s\n",
95 f_name(f), strerror(errno));
97 rprintf(FINFO,"deleting directory %s\n",f_name(f));
105 /* this deletes any files on the receiving side that are not present
106 on the sending side. For version 1.6.4 I have changed the behaviour
107 to match more closely what most people seem to expect of this option */
108 void delete_files(struct file_list *flist)
110 struct file_list *local_file_list;
113 extern int module_id;
114 extern int ignore_errors;
115 extern int max_delete;
116 static int deletion_count;
121 if (io_error && !(lp_ignore_errors(module_id) || ignore_errors)) {
122 rprintf(FINFO,"IO error encountered - skipping file deletion\n");
126 for (j=0;j<flist->count;j++) {
127 if (!S_ISDIR(flist->files[j]->mode) ||
128 !(flist->files[j]->flags & FLAG_DELETE)) continue;
130 if (remote_version < 19 &&
131 delete_already_done(flist, j)) continue;
133 name = strdup(f_name(flist->files[j]));
135 if (!(local_file_list = send_file_list(-1,1,&name))) {
141 rprintf(FINFO,"deleting in %s\n", name);
143 for (i=local_file_list->count-1;i>=0;i--) {
144 if (max_delete && deletion_count > max_delete) break;
145 if (!local_file_list->files[i]->basename) continue;
146 if (remote_version < 19 &&
147 S_ISDIR(local_file_list->files[i]->mode))
148 add_delete_entry(local_file_list->files[i]);
149 if (-1 == flist_find(flist,local_file_list->files[i])) {
150 char *f = f_name(local_file_list->files[i]);
151 int k = strlen(f) - strlen(backup_suffix);
152 /* Hi Andrew, do we really need to play with backup_suffix here? */
153 if (make_backups && ((k <= 0) ||
154 (strcmp(f+k,backup_suffix) != 0))) {
155 (void) make_backup(f);
158 delete_one(local_file_list->files[i]);
162 flist_free(local_file_list);
169 * get_tmpname() - create a tmp filename for a given filename
171 * If a tmpdir is defined, use that as the directory to
172 * put it in. Otherwise, the tmp filename is in the same
173 * directory as the given name. Note that there may be no
174 * directory at all in the given name!
176 * The tmp filename is basically the given filename with a
177 * dot prepended, and .XXXXXX appended (for mkstemp() to
178 * put its unique gunk in). Take care to not exceed
179 * either the MAXPATHLEN or NAME_MAX, esp. the last, as
180 * the basename basically becomes 8 chars longer. In that
181 * case, the original name is shortened sufficiently to
184 * Of course, there's no real reason for the tmp name to
185 * look like the original, except to satisfy us humans.
186 * As long as it's unique, rsync will work.
189 static int get_tmpname(char *fnametmp, char *fname)
196 strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
197 length = strlen(fnametmp);
198 fnametmp[length++] = '/';
199 fnametmp[length] = '\0'; /* always NULL terminated */
202 if ((f = strrchr(fname, '/'))) { /* extra () for gcc */
206 strlcpy(fnametmp, fname, length + 1);
207 } /* copy up to and including the slash */
211 fnametmp[length++] = '.';
212 fnametmp[length] = '\0'; /* always NULL terminated */
214 maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8);
218 rprintf(FERROR, "temporary filename too long: %s\n", fname);
223 strlcpy(fnametmp + length, f, maxname);
224 strcat(fnametmp + length, ".XXXXXX");
230 static int receive_data(int f_in,struct map_struct *buf,int fd,char *fname,
234 struct sum_struct sum;
239 static char file_sum1[MD4_SUM_LENGTH];
240 static char file_sum2[MD4_SUM_LENGTH];
243 read_sum_head(f_in, &sum);
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)sum.blength;
275 if (i == (int) sum.count-1 && sum.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);
300 end_progress(total_size);
302 if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
303 rprintf(FERROR,"write failed on %s : %s\n",
304 fname,strerror(errno));
305 exit_cleanup(RERR_FILEIO);
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) {
323 * main routine for receiver process.
325 * Receiver process runs on the same host as the generator process. */
326 int recv_files(int f_in,struct file_list *flist,char *local_name,int f_gen)
331 char template[MAXPATHLEN];
332 char fnametmp[MAXPATHLEN];
334 char fnamecmpbuf[MAXPATHLEN];
335 struct map_struct *buf;
337 struct file_struct *file;
340 extern struct stats stats;
341 extern int preserve_perms;
342 extern int delete_after;
343 extern int orig_umask;
344 struct stats initial_stats;
347 rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
357 csum_length = SUM_LENGTH;
359 rprintf(FINFO,"recv_files phase=%d\n",phase);
366 if (i < 0 || i >= flist->count) {
367 rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n",
369 exit_cleanup(RERR_PROTOCOL);
372 file = flist->files[i];
373 fname = f_name(file);
375 stats.num_transferred_files++;
376 stats.total_transferred_size += file->length;
382 if (!am_server && verbose) { /* log transfer */
383 rprintf(FINFO, "%s\n", fname);
388 initial_stats = stats;
391 rprintf(FINFO,"recv_files(%s)\n",fname);
396 fd1 = do_open(fnamecmp, O_RDONLY, 0);
398 if ((fd1 == -1) && (compare_dest != NULL)) {
399 /* try the file at compare_dest instead */
400 snprintf(fnamecmpbuf,MAXPATHLEN,"%s/%s",
402 fnamecmp = fnamecmpbuf;
403 fd1 = do_open(fnamecmp, O_RDONLY, 0);
406 if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
407 rprintf(FERROR,"fstat %s : %s\n",fnamecmp,strerror(errno));
408 receive_data(f_in,NULL,-1,NULL,file->length);
413 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
414 rprintf(FERROR,"%s : not a regular file (recv_files)\n",fnamecmp);
415 receive_data(f_in,NULL,-1,NULL,file->length);
420 if (fd1 != -1 && !preserve_perms) {
421 /* if the file exists already and we aren't preserving
422 permissions then act as though the remote end sent
423 us the file permissions we already have */
424 file->mode = st.st_mode;
427 if (fd1 != -1 && st.st_size > 0) {
428 buf = map_file(fd1,st.st_size);
430 rprintf(FINFO,"recv mapped %s of size %.0f\n",fnamecmp,(double)st.st_size);
435 if (!get_tmpname(fnametmp,fname)) {
436 if (buf) unmap_file(buf);
437 if (fd1 != -1) close(fd1);
441 strlcpy(template, fnametmp, sizeof(template));
443 /* we initially set the perms without the
444 setuid/setgid bits to ensure that there is no race
445 condition. They are then correctly updated after
446 the lchown. Thanks to snabb@epipe.fi for pointing
447 this out. We also set it initially without group
448 access because of a similar race condition. */
449 fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
451 /* in most cases parent directories will already exist
452 because their information should have been previously
453 transferred, but that may not be the case with -R */
454 if (fd2 == -1 && relative_paths && errno == ENOENT &&
455 create_directory_path(fnametmp, orig_umask) == 0) {
456 strlcpy(fnametmp, template, sizeof(fnametmp));
457 fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
460 rprintf(FERROR,"mkstemp %s failed: %s\n",fnametmp,strerror(errno));
461 receive_data(f_in,buf,-1,NULL,file->length);
462 if (buf) unmap_file(buf);
463 if (fd1 != -1) close(fd1);
467 cleanup_set(fnametmp, fname, file, buf, fd1, fd2);
469 if (!am_server && verbose) { /* log transfer */
470 rprintf(FINFO, "%s\n", fname);
474 recv_ok = receive_data(f_in,buf,fd2,fname,file->length);
476 log_recv(file, &initial_stats);
478 if (buf) unmap_file(buf);
485 rprintf(FINFO,"renaming %s to %s\n",fnametmp,fname);
487 finish_transfer(fname, fnametmp, file);
492 if (csum_length == SUM_LENGTH) {
493 rprintf(FERROR,"ERROR: file corruption in %s. File changed during transfer?\n",
497 rprintf(FINFO,"redoing %s(%d)\n",fname,i);
504 if (recurse && delete_mode && !local_name && flist->count>0) {
509 if (preserve_hard_links)
512 /* now we need to fix any directory permissions that were
513 modified during the transfer */
514 for (i = 0; i < flist->count; i++) {
515 file = flist->files[i];
516 if (!file->basename || !S_ISDIR(file->mode)) continue;
517 recv_generator(local_name?local_name:f_name(file),flist,i,-1);
521 rprintf(FINFO,"recv_files finished\n");