2 * Routines only used by the sending process.
4 * Copyright (C) 1996 Andrew Tridgell
5 * Copyright (C) 1996 Paul Mackerras
6 * Copyright (C) 2003, 2004, 2005, 2006 Wayne Davison
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
29 extern int incremental;
30 extern int log_before_transfer;
31 extern int stdout_format_has_i;
32 extern int logfile_format_has_i;
33 extern int csum_length;
34 extern int append_mode;
36 extern int allowed_lull;
37 extern int protocol_version;
38 extern int remove_source_files;
39 extern int updating_basis_file;
40 extern int make_backups;
41 extern int do_progress;
44 extern int write_batch;
45 extern struct stats stats;
46 extern struct file_list *cur_flist, *first_flist;
47 extern char *stdout_format;
52 * The sender gets checksums from the generator, calculates deltas,
53 * and transmits them to the receiver. The sender process runs on the
54 * machine holding the source files.
58 * Receive the checksums for a buffer
60 static struct sum_struct *receive_sums(int f)
64 int lull_mod = allowed_lull * 5;
67 if (!(s = new(struct sum_struct)))
68 out_of_memory("receive_sums");
75 rprintf(FINFO, "count=%.0f n=%ld rem=%ld\n",
76 (double)s->count, (long)s->blength, (long)s->remainder);
79 if (append_mode > 0) {
80 s->flength = (OFF_T)s->count * s->blength;
82 s->flength -= s->blength - s->remainder;
89 if (!(s->sums = new_array(struct sum_buf, s->count)))
90 out_of_memory("receive_sums");
92 for (i = 0; i < s->count; i++) {
93 s->sums[i].sum1 = read_int(f);
94 read_buf(f, s->sums[i].sum2, s->s2length);
96 s->sums[i].offset = offset;
99 if (i == s->count-1 && s->remainder != 0)
100 s->sums[i].len = s->remainder;
102 s->sums[i].len = s->blength;
103 offset += s->sums[i].len;
105 if (allowed_lull && !(i % lull_mod))
106 maybe_send_keepalive();
110 "chunk[%d] len=%d offset=%.0f sum1=%08x\n",
111 i, s->sums[i].len, (double)s->sums[i].offset,
121 void successful_send(int ndx)
123 char fname[MAXPATHLEN];
124 struct file_struct *file;
125 struct file_list *flist;
127 if (!remove_source_files)
130 if (!(flist = flist_for_ndx(ndx))) {
132 "INTERNAL ERROR: unable to find flist for item %d\n",
137 file = flist->files[ndx - flist->ndx_start];
138 if (!push_flist_dir(F_ROOTDIR(file), -1))
142 if (do_unlink(fname) == 0) {
144 rprintf(FINFO, "sender removed %s\n", fname);
146 rsyserr(FERROR, errno, "sender failed to remove %s", fname);
149 void write_ndx_and_attrs(int f_out, int ndx, int iflags,
150 uchar fnamecmp_type, char *buf, int len)
152 write_ndx(f_out, ndx);
153 if (protocol_version < 29)
155 write_shortint(f_out, iflags);
156 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
157 write_byte(f_out, fnamecmp_type);
158 if (iflags & ITEM_XNAME_FOLLOWS)
159 write_vstring(f_out, buf, len);
162 void send_files(int f_in, int f_out)
165 struct sum_struct *s;
166 struct map_struct *mbuf = NULL;
168 char fname[MAXPATHLEN], xname[MAXPATHLEN];
169 const char *path, *slash;
172 struct file_struct *file;
173 int phase = 0, max_phase = protocol_version >= 29 ? 2 : 1;
174 struct stats initial_stats;
175 int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i;
176 enum logcode log_code = log_before_transfer ? FLOG : FINFO;
177 int f_xfer = write_batch < 0 ? batch_fd : f_out;
181 rprintf(FINFO, "send_files starting\n");
185 send_extra_file_list(f_out, 1000);
187 /* This call also sets cur_flist. */
188 ndx = read_ndx_and_attrs(f_in, f_out, &iflags,
189 &fnamecmp_type, xname, &xlen);
190 if (ndx == NDX_DONE) {
191 if (incremental && first_flist) {
192 flist_free(first_flist);
194 write_ndx(f_out, NDX_DONE);
198 if (++phase > max_phase)
201 rprintf(FINFO, "send_files phase=%d\n", phase);
202 write_ndx(f_out, NDX_DONE);
206 file = cur_flist->files[ndx - cur_flist->ndx_start];
207 if (F_ROOTDIR(file)) {
208 path = F_ROOTDIR(file);
213 if (!push_flist_dir(F_ROOTDIR(file), -1))
218 rprintf(FINFO, "send_files(%d, %s%s%s)\n", ndx, path,slash,fname);
220 if (!(iflags & ITEM_TRANSFER)) {
221 maybe_log_item(file, iflags, itemizing, xname);
226 "got transfer request in phase 2 [%s]\n",
228 exit_cleanup(RERR_PROTOCOL);
231 if (file->flags & FLAG_FILE_SENT) {
232 if (csum_length == SHORT_SUM_LENGTH) {
233 /* For inplace: redo phase turns off the backup
234 * flag so that we do a regular inplace send. */
235 make_backups = -make_backups;
236 append_mode = -append_mode;
237 csum_length = SUM_LENGTH;
240 if (csum_length != SHORT_SUM_LENGTH) {
241 make_backups = -make_backups;
242 append_mode = -append_mode;
243 csum_length = SHORT_SUM_LENGTH;
247 updating_basis_file = inplace && (protocol_version >= 29
248 ? fnamecmp_type == FNAMECMP_FNAME : make_backups <= 0);
250 stats.current_file_index = ndx;
251 stats.num_transferred_files++;
252 stats.total_transferred_size += F_LENGTH(file);
254 if (!do_xfers) { /* log the transfer */
255 log_item(FCLIENT, file, &stats, iflags, NULL);
256 write_ndx_and_attrs(f_out, ndx, iflags, fnamecmp_type,
261 initial_stats = stats;
263 if (!(s = receive_sums(f_in))) {
264 io_error |= IOERR_GENERAL;
265 rprintf(FERROR, "receive_sums failed\n");
266 exit_cleanup(RERR_PROTOCOL);
269 fd = do_open(fname, O_RDONLY, 0);
271 if (errno == ENOENT) {
272 enum logcode c = am_daemon
273 && protocol_version < 28 ? FERROR
275 io_error |= IOERR_VANISHED;
276 rprintf(c, "file has vanished: %s\n",
279 io_error |= IOERR_GENERAL;
280 rsyserr(FERROR, errno,
281 "send_files failed to open %s",
285 if (protocol_version >= 30)
286 send_msg_int(MSG_NO_SEND, ndx);
290 /* map the local file */
291 if (do_fstat(fd, &st) != 0) {
292 io_error |= IOERR_GENERAL;
293 rsyserr(FERROR, errno, "fstat failed");
296 exit_cleanup(RERR_PROTOCOL);
300 int32 read_size = MAX(s->blength * 3, MAX_MAP_SIZE);
301 mbuf = map_file(fd, st.st_size, read_size, s->blength);
306 rprintf(FINFO, "send_files mapped %s%s%s of size %.0f\n",
307 path,slash,fname, (double)st.st_size);
310 write_ndx_and_attrs(f_out, ndx, iflags, fnamecmp_type,
312 write_sum_head(f_xfer, s);
315 rprintf(FINFO, "calling match_sums %s%s%s\n", path,slash,fname);
317 if (log_before_transfer)
318 log_item(FCLIENT, file, &initial_stats, iflags, NULL);
319 else if (!am_server && verbose && do_progress)
320 rprintf(FCLIENT, "%s\n", fname);
322 set_compression(fname);
324 match_sums(f_xfer, s, mbuf, st.st_size);
326 end_progress(st.st_size);
328 log_item(log_code, file, &initial_stats, iflags, NULL);
331 j = unmap_file(mbuf);
333 io_error |= IOERR_GENERAL;
335 "read errors mapping %s",
344 rprintf(FINFO, "sender finished %s%s%s\n", path,slash,fname);
346 /* Flag that we actually sent this entry. */
347 file->flags |= FLAG_FILE_SENT;
349 if (make_backups < 0)
350 make_backups = -make_backups;
353 rprintf(FINFO, "send files finished\n");
357 write_ndx(f_out, NDX_DONE);