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 log_before_transfer;
30 extern int stdout_format_has_i;
31 extern int logfile_format_has_i;
32 extern int csum_length;
33 extern int append_mode;
35 extern int allowed_lull;
36 extern int protocol_version;
37 extern int remove_sender_files;
38 extern int updating_basis_file;
39 extern int make_backups;
40 extern int do_progress;
43 extern int write_batch;
44 extern struct stats stats;
45 extern struct file_list *the_file_list;
46 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);
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;
127 if (ndx < 0 || ndx >= the_file_list->count)
130 file = the_file_list->files[ndx];
131 if (file->dir.root) {
132 offset = stringjoin(fname, sizeof fname,
133 file->dir.root, "/", NULL);
136 f_name(file, fname + offset);
137 if (remove_sender_files && do_unlink(fname) == 0 && verbose > 1)
138 rprintf(FINFO, "sender removed %s\n", fname + offset);
141 static void write_ndx_and_attrs(int f_out, int ndx, int iflags,
142 uchar fnamecmp_type, char *buf, int len)
144 write_int(f_out, ndx);
145 if (protocol_version < 29)
147 write_shortint(f_out, iflags);
148 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
149 write_byte(f_out, fnamecmp_type);
150 if (iflags & ITEM_XNAME_FOLLOWS)
151 write_vstring(f_out, buf, len);
154 /* This is also used by receive.c with f_out = -1. */
155 int read_item_attrs(int f_in, int f_out, int ndx, uchar *type_ptr,
156 char *buf, int *len_ptr)
159 uchar fnamecmp_type = FNAMECMP_FNAME;
160 int iflags = protocol_version >= 29 ? read_shortint(f_in)
161 : ITEM_TRANSFER | ITEM_MISSING_DATA;
163 /* Handle the new keep-alive (no-op) packet. */
164 if (ndx == the_file_list->count && iflags == ITEM_IS_NEW)
166 else if (ndx < 0 || ndx >= the_file_list->count) {
167 rprintf(FERROR, "Invalid file index: %d (count=%d) [%s]\n",
168 ndx, the_file_list->count, who_am_i());
169 exit_cleanup(RERR_PROTOCOL);
170 } else if (iflags == ITEM_IS_NEW) {
171 rprintf(FERROR, "Invalid itemized flag word: %x [%s]\n",
173 exit_cleanup(RERR_PROTOCOL);
176 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
177 fnamecmp_type = read_byte(f_in);
178 *type_ptr = fnamecmp_type;
180 if (iflags & ITEM_XNAME_FOLLOWS) {
181 if ((len = read_vstring(f_in, buf, MAXPATHLEN)) < 0)
182 exit_cleanup(RERR_PROTOCOL);
189 if (iflags & ITEM_TRANSFER) {
190 if (!S_ISREG(the_file_list->files[ndx]->mode)) {
192 "received request to transfer non-regular file: %d [%s]\n",
194 exit_cleanup(RERR_PROTOCOL);
196 } else if (f_out >= 0) {
197 write_ndx_and_attrs(f_out, ndx, iflags,
198 fnamecmp_type, buf, len);
204 void send_files(struct file_list *flist, int f_out, int f_in)
207 struct sum_struct *s;
208 struct map_struct *mbuf = NULL;
210 char *fname2, fname[MAXPATHLEN];
211 char xname[MAXPATHLEN];
214 struct file_struct *file;
215 int phase = 0, max_phase = protocol_version >= 29 ? 2 : 1;
216 struct stats initial_stats;
217 int save_make_backups = make_backups;
218 int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i;
219 enum logcode log_code = log_before_transfer ? FLOG : FINFO;
220 int f_xfer = write_batch < 0 ? batch_fd : f_out;
224 rprintf(FINFO, "send_files starting\n");
231 if (++phase > max_phase)
233 csum_length = SUM_LENGTH;
235 rprintf(FINFO, "send_files phase=%d\n", phase);
236 write_int(f_out, -1);
237 /* For inplace: redo phase turns off the backup
238 * flag so that we do a regular inplace send. */
244 iflags = read_item_attrs(f_in, f_out, i, &fnamecmp_type,
246 if (iflags == ITEM_IS_NEW) /* no-op packet */
249 file = flist->files[i];
250 if (file->dir.root) {
251 /* N.B. We're sure that this fits, so offset is OK. */
252 offset = strlcpy(fname, file->dir.root, sizeof fname);
253 if (!offset || fname[offset-1] != '/')
254 fname[offset++] = '/';
257 fname2 = f_name(file, fname + offset);
260 rprintf(FINFO, "send_files(%d, %s)\n", i, fname);
262 if (!(iflags & ITEM_TRANSFER)) {
263 maybe_log_item(file, iflags, itemizing, xname);
268 "got transfer request in phase 2 [%s]\n",
270 exit_cleanup(RERR_PROTOCOL);
273 updating_basis_file = inplace && (protocol_version >= 29
274 ? fnamecmp_type == FNAMECMP_FNAME : !make_backups);
276 stats.current_file_index = i;
277 stats.num_transferred_files++;
278 stats.total_transferred_size += file->length;
280 if (!do_xfers) { /* log the transfer */
281 log_item(FCLIENT, file, &stats, iflags, NULL);
282 write_ndx_and_attrs(f_out, i, iflags, fnamecmp_type,
287 initial_stats = stats;
289 if (!(s = receive_sums(f_in))) {
290 io_error |= IOERR_GENERAL;
291 rprintf(FERROR, "receive_sums failed\n");
295 fd = do_open(fname, O_RDONLY, 0);
297 if (errno == ENOENT) {
298 enum logcode c = am_daemon
299 && protocol_version < 28 ? FERROR
301 io_error |= IOERR_VANISHED;
302 rprintf(c, "file has vanished: %s\n",
305 io_error |= IOERR_GENERAL;
306 rsyserr(FERROR, errno,
307 "send_files failed to open %s",
314 /* map the local file */
315 if (do_fstat(fd, &st) != 0) {
316 io_error |= IOERR_GENERAL;
317 rsyserr(FERROR, errno, "fstat failed");
324 int32 read_size = MAX(s->blength * 3, MAX_MAP_SIZE);
325 mbuf = map_file(fd, st.st_size, read_size, s->blength);
330 rprintf(FINFO, "send_files mapped %s of size %.0f\n",
331 fname, (double)st.st_size);
334 write_ndx_and_attrs(f_out, i, iflags, fnamecmp_type,
336 write_sum_head(f_xfer, s);
339 rprintf(FINFO, "calling match_sums %s\n", fname);
341 if (log_before_transfer)
342 log_item(FCLIENT, file, &initial_stats, iflags, NULL);
343 else if (!am_server && verbose && do_progress)
344 rprintf(FCLIENT, "%s\n", fname2);
346 set_compression(fname);
348 match_sums(f_xfer, s, mbuf, st.st_size);
350 end_progress(st.st_size);
352 log_item(log_code, file, &initial_stats, iflags, NULL);
355 j = unmap_file(mbuf);
357 io_error |= IOERR_GENERAL;
359 "read errors mapping %s",
368 rprintf(FINFO, "sender finished %s\n", fname);
370 /* Flag that we actually sent this entry. */
371 file->flags |= FLAG_SENT;
373 make_backups = save_make_backups;
376 rprintf(FINFO, "send files finished\n");
380 write_int(f_out, -1);