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 snprintf(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 snprintf(fnametmp,MAXPATHLEN,"%s/.%s.XXXXXX",
199 snprintf(fnametmp,MAXPATHLEN,".%s.XXXXXX",fname);
206 static int receive_data(int f_in,struct map_struct *buf,int fd,char *fname,
210 unsigned int n,remainder,len,count;
214 static char file_sum1[MD4_SUM_LENGTH];
215 static char file_sum2[MD4_SUM_LENGTH];
218 count = read_int(f_in);
220 remainder = read_int(f_in);
224 for (i=recv_token(f_in,&data); i != 0; i=recv_token(f_in,&data)) {
226 show_progress(offset, total_size);
229 extern int cleanup_got_literal;
232 rprintf(FINFO,"data recv %d at %.0f\n",
236 stats.literal_data += i;
237 cleanup_got_literal = 1;
241 if (fd != -1 && write_file(fd,data,i) != i) {
242 rprintf(FERROR,"write failed on %s : %s\n",fname,strerror(errno));
243 exit_cleanup(RERR_FILEIO);
250 offset2 = i*(OFF_T)n;
252 if (i == (int) count-1 && remainder != 0)
255 stats.matched_data += len;
258 rprintf(FINFO,"chunk[%d] of size %d at %.0f offset=%.0f\n",
259 i,len,(double)offset2,(double)offset);
262 map = map_ptr(buf,offset2,len);
268 if (fd != -1 && write_file(fd,map,len) != (int) len) {
269 rprintf(FERROR,"write failed on %s : %s\n",
270 fname,strerror(errno));
271 exit_cleanup(RERR_FILEIO);
276 end_progress(total_size);
278 if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
279 rprintf(FERROR,"write failed on %s : %s\n",
280 fname,strerror(errno));
281 exit_cleanup(RERR_FILEIO);
286 if (remote_version >= 14) {
287 read_buf(f_in,file_sum2,MD4_SUM_LENGTH);
289 rprintf(FINFO,"got file_sum\n");
292 memcmp(file_sum1,file_sum2,MD4_SUM_LENGTH) != 0) {
301 * main routine for receiver process.
303 * Receiver process runs on the same host as the generator process. */
304 int recv_files(int f_in,struct file_list *flist,char *local_name,int f_gen)
309 char template[MAXPATHLEN];
310 char fnametmp[MAXPATHLEN];
312 char fnamecmpbuf[MAXPATHLEN];
313 struct map_struct *buf;
315 struct file_struct *file;
318 extern struct stats stats;
319 extern int preserve_perms;
320 extern int delete_after;
321 extern int orig_umask;
322 struct stats initial_stats;
325 rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
333 if (phase==0 && remote_version >= 13) {
335 csum_length = SUM_LENGTH;
337 rprintf(FINFO,"recv_files phase=%d\n",phase);
344 if (i < 0 || i >= flist->count) {
345 rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n",
347 exit_cleanup(RERR_PROTOCOL);
350 file = flist->files[i];
351 fname = f_name(file);
353 stats.num_transferred_files++;
354 stats.total_transferred_size += file->length;
361 log_transfer(file, fname);
366 initial_stats = stats;
369 rprintf(FINFO,"recv_files(%s)\n",fname);
374 fd1 = do_open(fnamecmp, O_RDONLY, 0);
376 if ((fd1 == -1) && (compare_dest != NULL)) {
377 /* try the file at compare_dest instead */
378 snprintf(fnamecmpbuf,MAXPATHLEN,"%s/%s",
380 fnamecmp = fnamecmpbuf;
381 fd1 = do_open(fnamecmp, O_RDONLY, 0);
384 if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
385 rprintf(FERROR,"fstat %s : %s\n",fnamecmp,strerror(errno));
386 receive_data(f_in,NULL,-1,NULL,file->length);
391 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
392 rprintf(FERROR,"%s : not a regular file (recv_files)\n",fnamecmp);
393 receive_data(f_in,NULL,-1,NULL,file->length);
398 if (fd1 != -1 && !preserve_perms) {
399 /* if the file exists already and we aren't perserving
400 presmissions then act as though the remote end sent
401 us the file permissions we already have */
402 file->mode = st.st_mode;
405 if (fd1 != -1 && st.st_size > 0) {
406 buf = map_file(fd1,st.st_size);
408 rprintf(FINFO,"recv mapped %s of size %.0f\n",fnamecmp,(double)st.st_size);
413 if (!get_tmpname(fnametmp,fname)) {
414 if (buf) unmap_file(buf);
415 if (fd1 != -1) close(fd1);
419 strlcpy(template, fnametmp, sizeof(template));
421 /* we initially set the perms without the
422 setuid/setgid bits to ensure that there is no race
423 condition. They are then correctly updated after
424 the lchown. Thanks to snabb@epipe.fi for pointing
425 this out. We also set it initially without group
426 access because of a similar race condition. */
427 fd2 = do_mkstemp(fnametmp, 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, orig_umask) == 0) {
434 strlcpy(fnametmp, template, sizeof(fnametmp));
435 fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
438 rprintf(FERROR,"mkstemp %s failed: %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);
482 if (recurse && delete_mode && !local_name && flist->count>0) {
487 if (preserve_hard_links)
490 /* now we need to fix any directory permissions that were
491 modified during the transfer */
492 for (i = 0; i < flist->count; i++) {
493 file = flist->files[i];
494 if (!file->basename || !S_ISDIR(file->mode)) continue;
495 recv_generator(local_name?local_name:f_name(file),flist,i,-1);
499 rprintf(FINFO,"recv_files finished\n");