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.
26 extern int log_before_transfer;
27 extern int log_format_has_i;
28 extern int daemon_log_format_has_i;
29 extern int csum_length;
31 extern int protocol_version;
32 extern int remove_sent_files;
33 extern int updating_basis_file;
34 extern int make_backups;
35 extern int do_progress;
37 extern struct stats stats;
38 extern struct file_list *the_file_list;
39 extern char *log_format;
45 * The sender gets checksums from the generator, calculates deltas,
46 * and transmits them to the receiver. The sender process runs on the
47 * machine holding the source files.
51 * Receive the checksums for a buffer
53 static struct sum_struct *receive_sums(int f)
59 if (!(s = new(struct sum_struct)))
60 out_of_memory("receive_sums");
67 rprintf(FINFO, "count=%.0f n=%ld rem=%ld\n",
68 (double)s->count, (long)s->blength, (long)s->remainder);
74 if (!(s->sums = new_array(struct sum_buf, s->count)))
75 out_of_memory("receive_sums");
77 for (i = 0; i < s->count; i++) {
78 s->sums[i].sum1 = read_int(f);
79 read_buf(f, s->sums[i].sum2, s->s2length);
81 s->sums[i].offset = offset;
84 if (i == s->count-1 && s->remainder != 0)
85 s->sums[i].len = s->remainder;
87 s->sums[i].len = s->blength;
88 offset += s->sums[i].len;
92 "chunk[%d] len=%d offset=%.0f sum1=%08x\n",
93 i, s->sums[i].len, (double)s->sums[i].offset,
103 void successful_send(int ndx)
105 char fname[MAXPATHLEN];
106 struct file_struct *file;
109 if (ndx < 0 || ndx >= the_file_list->count)
112 file = the_file_list->files[ndx];
113 /* The generator might tell us about symlinks we didn't send. */
114 if (!(file->flags & FLAG_SENT) && !S_ISLNK(file->mode))
116 if (file->dir.root) {
117 offset = stringjoin(fname, sizeof fname,
118 file->dir.root, "/", NULL);
121 f_name_to(file, fname + offset);
122 if (remove_sent_files && do_unlink(fname) == 0 && verbose > 1) {
123 rprintf(FINFO, "sender removed %s\n",
124 safe_fname(fname + offset));
128 /* This is also used by receive.c with f_out = -1. */
129 int read_iflags(int f_in, int f_out, int ndx, char *buf)
132 int iflags = protocol_version >= 29 ? read_shortint(f_in)
133 : ITEM_TRANSFER | ITEM_MISSING_DATA;
134 int isave = iflags; /* XXX remove soon */
136 /* Handle the new keep-alive (no-op) packet. */
137 if (ndx == the_file_list->count && iflags == ITEM_IS_NEW)
139 else if (ndx < 0 || ndx >= the_file_list->count) {
140 rprintf(FERROR, "Invalid file index %d (count=%d) [%s]\n",
141 ndx, the_file_list->count, who_am_i());
142 exit_cleanup(RERR_PROTOCOL);
143 } else if (iflags == ITEM_IS_NEW) {
144 rprintf(FERROR, "Invalid itemized flag word [%s]\n",
146 exit_cleanup(RERR_PROTOCOL);
149 if (iflags & ITEM_HARD_LINKED)
150 len = read_vstring(f_in, buf, MAXPATHLEN);
156 /* XXX Temporary backward compatibility when talking to 2.6.4pre[12] */
157 if (protocol_version >= 29 && iflags & ITEM_TRANSFER
158 && !S_ISREG(the_file_list->files[ndx]->mode)) {
159 iflags &= ~ITEM_TRANSFER;
160 iflags |= ITEM_LOCAL_CHANGE;
163 if (iflags & ITEM_TRANSFER) {
164 if (!S_ISREG(the_file_list->files[ndx]->mode)) {
166 "received index of non-regular file: %d [%s]\n",
168 exit_cleanup(RERR_PROTOCOL);
170 } else if (f_out >= 0) {
171 write_int(f_out, ndx);
172 write_shortint(f_out, isave /*XXX iflags */);
174 write_vstring(f_out, buf, len);
180 void send_files(struct file_list *flist, int f_out, int f_in)
183 struct sum_struct *s;
184 struct map_struct *mbuf = NULL;
186 char *fname2, fname[MAXPATHLEN];
187 char fnametmp[MAXPATHLEN];
189 struct file_struct *file;
191 struct stats initial_stats;
192 int save_make_backups = make_backups;
193 int itemizing = am_daemon ? daemon_log_format_has_i
194 : !am_server && log_format_has_i;
198 rprintf(FINFO, "send_files starting\n");
207 csum_length = SUM_LENGTH;
208 write_int(f_out, -1);
210 rprintf(FINFO, "send_files phase=%d\n", phase);
211 /* For inplace: redo phase turns off the backup
212 * flag so that we do a regular inplace send. */
219 iflags = read_iflags(f_in, f_out, i, fnametmp);
220 if (iflags == ITEM_IS_NEW) /* no-op packet */
223 file = flist->files[i];
224 if (file->dir.root) {
225 /* N.B. We're sure that this fits, so offset is OK. */
226 offset = strlcpy(fname, file->dir.root, sizeof fname);
227 if (!offset || fname[offset-1] != '/')
228 fname[offset++] = '/';
231 fname2 = f_name_to(file, fname + offset);
234 rprintf(FINFO, "send_files(%d, %s)\n", i, fname);
236 if (!(iflags & ITEM_TRANSFER)) {
237 maybe_log_item(file, iflags, itemizing, fnametmp);
241 if (inplace && protocol_version >= 29) {
242 updating_basis_file = !(iflags & ITEM_USING_ALT_BASIS);
244 updating_basis_file = inplace && !make_backups;
246 stats.current_file_index = i;
247 stats.num_transferred_files++;
248 stats.total_transferred_size += file->length;
250 if (dry_run) { /* log the transfer */
251 if (!am_server && log_format)
252 log_item(file, &stats, iflags, NULL);
254 if (protocol_version >= 29)
255 write_shortint(f_out, iflags);
259 initial_stats = stats;
261 if (!(s = receive_sums(f_in))) {
262 io_error |= IOERR_GENERAL;
263 rprintf(FERROR, "receive_sums failed\n");
267 fd = do_open(fname, O_RDONLY, 0);
269 if (errno == ENOENT) {
270 enum logcode c = am_daemon
271 && protocol_version < 28 ? FERROR
273 io_error |= IOERR_VANISHED;
274 rprintf(c, "file has vanished: %s\n",
277 io_error |= IOERR_GENERAL;
278 rsyserr(FERROR, errno,
279 "send_files failed to open %s",
286 /* map the local file */
287 if (do_fstat(fd, &st) != 0) {
288 io_error |= IOERR_GENERAL;
289 rsyserr(FERROR, errno, "fstat failed");
296 int32 read_size = MAX(s->blength * 3, MAX_MAP_SIZE);
297 mbuf = map_file(fd, st.st_size, read_size, s->blength);
302 rprintf(FINFO, "send_files mapped %s of size %.0f\n",
303 safe_fname(fname), (double)st.st_size);
307 if (protocol_version >= 29)
308 write_shortint(f_out, iflags);
309 write_sum_head(f_out, s);
312 rprintf(FINFO, "calling match_sums %s\n",
316 if (log_before_transfer)
317 log_item(file, &initial_stats, iflags, NULL);
318 else if (!am_server && verbose && do_progress)
319 rprintf(FINFO, "%s\n", safe_fname(fname2));
321 set_compression(fname);
323 match_sums(f_out, s, mbuf, st.st_size);
324 if (!log_before_transfer)
325 log_item(file, &initial_stats, iflags, NULL);
328 j = unmap_file(mbuf);
330 io_error |= IOERR_GENERAL;
332 "read errors mapping %s",
341 rprintf(FINFO, "sender finished %s\n",
345 /* Flag that we actually sent this entry. */
346 file->flags |= FLAG_SENT;
348 make_backups = save_make_backups;
351 rprintf(FINFO, "send files finished\n");
355 write_int(f_out, -1);