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_dir;
40 extern char *backup_suffix;
41 extern int backup_suffix_len;
43 static struct delete_list {
47 static int dlist_len, dlist_alloc_len;
49 /* yuck! This function wouldn't have been necessary if I had the sorting
50 algorithm right. Unfortunately fixing the sorting algorithm would introduce
51 a backward incompatibility as file list indexes are sent over the link.
53 static int delete_already_done(struct file_list *flist,int j)
58 if (link_stat(f_name(flist->files[j]), &st)) return 1;
60 for (i=0;i<dlist_len;i++) {
61 if (st.st_ino == delete_list[i].inode &&
62 (DEV64_T)st.st_dev == delete_list[i].dev)
69 static void add_delete_entry(struct file_struct *file)
71 if (dlist_len == dlist_alloc_len) {
72 dlist_alloc_len += 1024;
73 delete_list = (struct delete_list *)Realloc(delete_list, sizeof(delete_list[0])*dlist_alloc_len);
74 if (!delete_list) out_of_memory("add_delete_entry");
77 delete_list[dlist_len].dev = file->dev;
78 delete_list[dlist_len].inode = file->inode;
82 rprintf(FINFO,"added %s to delete list\n", f_name(file));
85 static void delete_one(char *fn, int is_dir)
88 if (robust_unlink(fn) != 0) {
89 rprintf(FERROR, "delete_one: unlink %s: %s\n",
92 rprintf(FINFO, "deleting %s\n", fn);
95 if (do_rmdir(fn) != 0) {
96 if (errno != ENOTEMPTY && errno != EEXIST) {
97 rprintf(FERROR, "delete_one: rmdir %s: %s\n",
100 } else if (verbose) {
101 rprintf(FINFO, "deleting directory %s\n", fn);
107 static int is_backup_file(char *fn)
109 int k = strlen(fn) - backup_suffix_len;
110 return k > 0 && strcmp(fn+k, backup_suffix) == 0;
114 /* this deletes any files on the receiving side that are not present
115 on the sending side. For version 1.6.4 I have changed the behaviour
116 to match more closely what most people seem to expect of this option */
117 void delete_files(struct file_list *flist)
119 struct file_list *local_file_list;
122 extern int module_id;
123 extern int ignore_errors;
124 extern int max_delete;
125 static int deletion_count;
130 if (io_error && !(lp_ignore_errors(module_id) || ignore_errors)) {
131 rprintf(FINFO,"IO error encountered - skipping file deletion\n");
135 for (j=0;j<flist->count;j++) {
136 if (!S_ISDIR(flist->files[j]->mode) ||
137 !(flist->files[j]->flags & FLAG_DELETE)) continue;
139 if (remote_version < 19 &&
140 delete_already_done(flist, j)) continue;
142 name = strdup(f_name(flist->files[j]));
144 if (!(local_file_list = send_file_list(-1,1,&name))) {
150 rprintf(FINFO,"deleting in %s\n", name);
152 for (i=local_file_list->count-1;i>=0;i--) {
153 if (max_delete && deletion_count > max_delete) break;
154 if (!local_file_list->files[i]->basename) continue;
155 if (remote_version < 19 &&
156 S_ISDIR(local_file_list->files[i]->mode))
157 add_delete_entry(local_file_list->files[i]);
158 if (-1 == flist_find(flist,local_file_list->files[i])) {
159 char *f = f_name(local_file_list->files[i]);
160 if (make_backups && (backup_dir || !is_backup_file(f))) {
161 (void) make_backup(f);
163 rprintf(FINFO, "deleting %s\n", f);
165 int mode = local_file_list->files[i]->mode;
166 delete_one(f, S_ISDIR(mode) != 0);
171 flist_free(local_file_list);
178 * get_tmpname() - create a tmp filename for a given filename
180 * If a tmpdir is defined, use that as the directory to
181 * put it in. Otherwise, the tmp filename is in the same
182 * directory as the given name. Note that there may be no
183 * directory at all in the given name!
185 * The tmp filename is basically the given filename with a
186 * dot prepended, and .XXXXXX appended (for mkstemp() to
187 * put its unique gunk in). Take care to not exceed
188 * either the MAXPATHLEN or NAME_MAX, esp. the last, as
189 * the basename basically becomes 8 chars longer. In that
190 * case, the original name is shortened sufficiently to
193 * Of course, there's no real reason for the tmp name to
194 * look like the original, except to satisfy us humans.
195 * As long as it's unique, rsync will work.
198 static int get_tmpname(char *fnametmp, char *fname)
205 strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
206 length = strlen(fnametmp);
207 fnametmp[length++] = '/';
208 fnametmp[length] = '\0'; /* always NULL terminated */
211 if ((f = strrchr(fname, '/')) != NULL) {
215 /* copy up to and including the slash */
216 strlcpy(fnametmp, fname, length + 1);
221 fnametmp[length++] = '.';
222 fnametmp[length] = '\0'; /* always NULL terminated */
224 maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8);
227 rprintf(FERROR, "temporary filename too long: %s\n", fname);
232 strlcpy(fnametmp + length, f, maxname);
233 strcat(fnametmp + length, ".XXXXXX");
239 static int receive_data(int f_in,struct map_struct *buf,int fd,char *fname,
243 struct sum_struct sum;
248 static char file_sum1[MD4_SUM_LENGTH];
249 static char file_sum2[MD4_SUM_LENGTH];
252 read_sum_head(f_in, &sum);
256 for (i=recv_token(f_in,&data); i != 0; i=recv_token(f_in,&data)) {
258 show_progress(offset, total_size);
261 extern int cleanup_got_literal;
264 rprintf(FINFO,"data recv %d at %.0f\n",
268 stats.literal_data += i;
269 cleanup_got_literal = 1;
273 if (fd != -1 && write_file(fd,data,i) != i) {
274 rprintf(FERROR,"write failed on %s : %s\n",fname,strerror(errno));
275 exit_cleanup(RERR_FILEIO);
282 offset2 = i*(OFF_T)sum.blength;
284 if (i == (int) sum.count-1 && sum.remainder != 0)
287 stats.matched_data += len;
290 rprintf(FINFO,"chunk[%d] of size %d at %.0f offset=%.0f\n",
291 i,len,(double)offset2,(double)offset);
294 map = map_ptr(buf,offset2,len);
300 if (fd != -1 && write_file(fd,map,len) != (int) len) {
301 rprintf(FERROR,"write failed on %s : %s\n",
302 fname,strerror(errno));
303 exit_cleanup(RERR_FILEIO);
309 end_progress(total_size);
311 if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
312 rprintf(FERROR,"write failed on %s : %s\n",
313 fname,strerror(errno));
314 exit_cleanup(RERR_FILEIO);
319 read_buf(f_in,file_sum2,MD4_SUM_LENGTH);
321 rprintf(FINFO,"got file_sum\n");
324 && memcmp(file_sum1,file_sum2,MD4_SUM_LENGTH) != 0) {
332 * main routine for receiver process.
334 * Receiver process runs on the same host as the generator process. */
335 int recv_files(int f_in,struct file_list *flist,char *local_name,int f_gen)
340 char template[MAXPATHLEN];
341 char fnametmp[MAXPATHLEN];
343 char fnamecmpbuf[MAXPATHLEN];
344 struct map_struct *buf;
346 struct file_struct *file;
349 extern struct stats stats;
350 extern int preserve_perms;
351 extern int delete_after;
352 extern int orig_umask;
353 struct stats initial_stats;
356 rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
366 csum_length = SUM_LENGTH;
368 rprintf(FINFO,"recv_files phase=%d\n",phase);
375 if (i < 0 || i >= flist->count) {
376 rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n",
378 exit_cleanup(RERR_PROTOCOL);
381 file = flist->files[i];
382 fname = f_name(file);
384 stats.num_transferred_files++;
385 stats.total_transferred_size += file->length;
391 if (!am_server && verbose) { /* log transfer */
392 rprintf(FINFO, "%s\n", fname);
397 initial_stats = stats;
400 rprintf(FINFO,"recv_files(%s)\n",fname);
405 fd1 = do_open(fnamecmp, O_RDONLY, 0);
407 if ((fd1 == -1) && (compare_dest != NULL)) {
408 /* try the file at compare_dest instead */
409 snprintf(fnamecmpbuf,MAXPATHLEN,"%s/%s",
411 fnamecmp = fnamecmpbuf;
412 fd1 = do_open(fnamecmp, O_RDONLY, 0);
415 if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
416 rprintf(FERROR,"fstat %s : %s\n",fnamecmp,strerror(errno));
417 receive_data(f_in,NULL,-1,NULL,file->length);
422 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
423 rprintf(FERROR,"%s : not a regular file (recv_files)\n",fnamecmp);
424 receive_data(f_in,NULL,-1,NULL,file->length);
429 if (fd1 != -1 && !preserve_perms) {
430 /* if the file exists already and we aren't preserving
431 permissions then act as though the remote end sent
432 us the file permissions we already have */
433 file->mode = st.st_mode;
436 if (fd1 != -1 && st.st_size > 0) {
437 buf = map_file(fd1,st.st_size);
439 rprintf(FINFO,"recv mapped %s of size %.0f\n",fnamecmp,(double)st.st_size);
444 if (!get_tmpname(fnametmp,fname)) {
445 if (buf) unmap_file(buf);
446 if (fd1 != -1) close(fd1);
450 strlcpy(template, fnametmp, sizeof(template));
452 /* we initially set the perms without the
453 setuid/setgid bits to ensure that there is no race
454 condition. They are then correctly updated after
455 the lchown. Thanks to snabb@epipe.fi for pointing
456 this out. We also set it initially without group
457 access because of a similar race condition. */
458 fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
460 /* in most cases parent directories will already exist
461 because their information should have been previously
462 transferred, but that may not be the case with -R */
463 if (fd2 == -1 && relative_paths && errno == ENOENT &&
464 create_directory_path(fnametmp, orig_umask) == 0) {
465 strlcpy(fnametmp, template, sizeof(fnametmp));
466 fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
469 extern char curr_dir[];
471 if (*fnametmp == '.') {
476 rprintf(FERROR, "mkstemp %s%s%s failed: %s\n",
477 p1, p2, fnametmp, strerror(errno));
478 receive_data(f_in,buf,-1,NULL,file->length);
479 if (buf) unmap_file(buf);
480 if (fd1 != -1) close(fd1);
484 cleanup_set(fnametmp, fname, file, buf, fd1, fd2);
486 if (!am_server && verbose) { /* log transfer */
487 rprintf(FINFO, "%s\n", fname);
491 recv_ok = receive_data(f_in,buf,fd2,fname,file->length);
493 log_recv(file, &initial_stats);
495 if (buf) unmap_file(buf);
502 rprintf(FINFO,"renaming %s to %s\n",fnametmp,fname);
504 finish_transfer(fname, fnametmp, file);
509 if (csum_length == SUM_LENGTH) {
510 rprintf(FERROR,"ERROR: file corruption in %s. File changed during transfer?\n",
514 rprintf(FINFO,"redoing %s(%d)\n",fname,i);
521 if (recurse && delete_mode && !local_name && flist->count>0) {
526 if (preserve_hard_links)
529 /* now we need to fix any directory permissions that were
530 modified during the transfer */
531 for (i = 0; i < flist->count; i++) {
532 file = flist->files[i];
533 if (!file->basename || !S_ISDIR(file->mode)) continue;
534 recv_generator(local_name?local_name:f_name(file),flist,i,-1);
538 rprintf(FINFO,"recv_files finished\n");