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;
30 extern int append_mode;
32 extern int allowed_lull;
33 extern int protocol_version;
34 extern int remove_sent_files;
35 extern int updating_basis_file;
36 extern int make_backups;
37 extern int do_progress;
40 extern int write_batch;
41 extern struct stats stats;
42 extern struct file_list *the_file_list;
43 extern char *log_format;
49 * The sender gets checksums from the generator, calculates deltas,
50 * and transmits them to the receiver. The sender process runs on the
51 * machine holding the source files.
55 * Receive the checksums for a buffer
57 static struct sum_struct *receive_sums(int f)
61 int lull_mod = allowed_lull * 5;
64 if (!(s = new(struct sum_struct)))
65 out_of_memory("receive_sums");
72 rprintf(FINFO, "count=%.0f n=%ld rem=%ld\n",
73 (double)s->count, (long)s->blength, (long)s->remainder);
77 s->flength = (OFF_T)s->count * s->blength;
79 s->flength -= s->blength - s->remainder;
86 if (!(s->sums = new_array(struct sum_buf, s->count)))
87 out_of_memory("receive_sums");
89 for (i = 0; i < s->count; i++) {
90 s->sums[i].sum1 = read_int(f);
91 read_buf(f, s->sums[i].sum2, s->s2length);
93 s->sums[i].offset = offset;
96 if (i == s->count-1 && s->remainder != 0)
97 s->sums[i].len = s->remainder;
99 s->sums[i].len = s->blength;
100 offset += s->sums[i].len;
102 if (allowed_lull && !(i % lull_mod))
103 maybe_send_keepalive();
107 "chunk[%d] len=%d offset=%.0f sum1=%08x\n",
108 i, s->sums[i].len, (double)s->sums[i].offset,
118 void successful_send(int ndx)
120 char fname[MAXPATHLEN];
121 struct file_struct *file;
124 if (ndx < 0 || ndx >= the_file_list->count)
127 file = the_file_list->files[ndx];
128 /* The generator might tell us about symlinks we didn't send. */
129 if (!(file->flags & FLAG_SENT) && !S_ISLNK(file->mode))
131 if (file->dir.root) {
132 offset = stringjoin(fname, sizeof fname,
133 file->dir.root, "/", NULL);
136 f_name_to(file, fname + offset);
137 if (remove_sent_files && do_unlink(fname) == 0 && verbose > 1) {
138 rprintf(FINFO, "sender removed %s\n",
139 safe_fname(fname + offset));
143 static void write_ndx_and_attrs(int f_out, int ndx, int iflags,
144 uchar fnamecmp_type, char *buf, int len)
146 write_int(f_out, ndx);
147 if (protocol_version < 29)
149 write_shortint(f_out, iflags);
150 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
151 write_byte(f_out, fnamecmp_type);
152 if (iflags & ITEM_XNAME_FOLLOWS)
153 write_vstring(f_out, buf, len);
156 /* This is also used by receive.c with f_out = -1. */
157 int read_item_attrs(int f_in, int f_out, int ndx, uchar *type_ptr,
158 char *buf, int *len_ptr)
161 uchar fnamecmp_type = FNAMECMP_FNAME;
162 int iflags = protocol_version >= 29 ? read_shortint(f_in)
163 : ITEM_TRANSFER | ITEM_MISSING_DATA;
165 /* Handle the new keep-alive (no-op) packet. */
166 if (ndx == the_file_list->count && iflags == ITEM_IS_NEW)
168 else if (ndx < 0 || ndx >= the_file_list->count) {
169 rprintf(FERROR, "Invalid file index: %d (count=%d) [%s]\n",
170 ndx, the_file_list->count, who_am_i());
171 exit_cleanup(RERR_PROTOCOL);
172 } else if (iflags == ITEM_IS_NEW) {
173 rprintf(FERROR, "Invalid itemized flag word: %x [%s]\n",
175 exit_cleanup(RERR_PROTOCOL);
178 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
179 fnamecmp_type = read_byte(f_in);
180 *type_ptr = fnamecmp_type;
182 if (iflags & ITEM_XNAME_FOLLOWS) {
183 if ((len = read_vstring(f_in, buf, MAXPATHLEN)) < 0)
184 exit_cleanup(RERR_PROTOCOL);
191 if (iflags & ITEM_TRANSFER) {
192 if (!S_ISREG(the_file_list->files[ndx]->mode)) {
194 "received request to transfer non-regular file: %d [%s]\n",
196 exit_cleanup(RERR_PROTOCOL);
198 } else if (f_out >= 0) {
199 write_ndx_and_attrs(f_out, ndx, iflags,
200 fnamecmp_type, buf, len);
206 void send_files(struct file_list *flist, int f_out, int f_in)
209 struct sum_struct *s;
210 struct map_struct *mbuf = NULL;
212 char *fname2, fname[MAXPATHLEN];
213 char xname[MAXPATHLEN];
216 struct file_struct *file;
217 int phase = 0, max_phase = protocol_version >= 29 ? 2 : 1;
218 struct stats initial_stats;
219 int save_make_backups = make_backups;
220 int itemizing = am_daemon ? daemon_log_format_has_i
221 : !am_server && log_format_has_i;
222 int f_xfer = write_batch < 0 ? batch_fd : f_out;
226 rprintf(FINFO, "send_files starting\n");
233 if (++phase > max_phase)
235 csum_length = SUM_LENGTH;
237 rprintf(FINFO, "send_files phase=%d\n", phase);
238 write_int(f_out, -1);
239 /* For inplace: redo phase turns off the backup
240 * flag so that we do a regular inplace send. */
246 iflags = read_item_attrs(f_in, f_out, i, &fnamecmp_type,
248 if (iflags == ITEM_IS_NEW) /* no-op packet */
251 file = flist->files[i];
252 if (file->dir.root) {
253 /* N.B. We're sure that this fits, so offset is OK. */
254 offset = strlcpy(fname, file->dir.root, sizeof fname);
255 if (!offset || fname[offset-1] != '/')
256 fname[offset++] = '/';
259 fname2 = f_name_to(file, fname + offset);
262 rprintf(FINFO, "send_files(%d, %s)\n", i, fname);
264 if (!(iflags & ITEM_TRANSFER)) {
265 maybe_log_item(file, iflags, itemizing, xname);
270 "got transfer request in phase 2 [%s]\n",
272 exit_cleanup(RERR_PROTOCOL);
275 updating_basis_file = inplace && (protocol_version >= 29
276 ? fnamecmp_type == FNAMECMP_FNAME : !make_backups);
278 stats.current_file_index = i;
279 stats.num_transferred_files++;
280 stats.total_transferred_size += file->length;
282 if (!do_xfers) { /* log the transfer */
283 if (!am_server && log_format)
284 log_item(file, &stats, iflags, NULL);
285 write_ndx_and_attrs(f_out, i, iflags, fnamecmp_type,
290 initial_stats = stats;
292 if (!(s = receive_sums(f_in))) {
293 io_error |= IOERR_GENERAL;
294 rprintf(FERROR, "receive_sums failed\n");
298 fd = do_open(fname, O_RDONLY, 0);
300 if (errno == ENOENT) {
301 enum logcode c = am_daemon
302 && protocol_version < 28 ? FERROR
304 io_error |= IOERR_VANISHED;
305 rprintf(c, "file has vanished: %s\n",
308 io_error |= IOERR_GENERAL;
309 rsyserr(FERROR, errno,
310 "send_files failed to open %s",
317 /* map the local file */
318 if (do_fstat(fd, &st) != 0) {
319 io_error |= IOERR_GENERAL;
320 rsyserr(FERROR, errno, "fstat failed");
327 int32 read_size = MAX(s->blength * 3, MAX_MAP_SIZE);
328 mbuf = map_file(fd, st.st_size, read_size, s->blength);
333 rprintf(FINFO, "send_files mapped %s of size %.0f\n",
334 safe_fname(fname), (double)st.st_size);
337 write_ndx_and_attrs(f_out, i, iflags, fnamecmp_type,
339 write_sum_head(f_xfer, s);
342 rprintf(FINFO, "calling match_sums %s\n",
346 if (log_before_transfer)
347 log_item(file, &initial_stats, iflags, NULL);
348 else if (!am_server && verbose && do_progress)
349 rprintf(FINFO, "%s\n", safe_fname(fname2));
351 set_compression(fname);
353 match_sums(f_xfer, s, mbuf, st.st_size);
355 end_progress(st.st_size);
357 if (!log_before_transfer)
358 log_item(file, &initial_stats, iflags, NULL);
361 j = unmap_file(mbuf);
363 io_error |= IOERR_GENERAL;
365 "read errors mapping %s",
374 rprintf(FINFO, "sender finished %s\n",
378 /* Flag that we actually sent this entry. */
379 file->flags |= FLAG_SENT;
381 make_backups = save_make_backups;
384 rprintf(FINFO, "send files finished\n");
388 write_int(f_out, -1);