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_source_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_source_files) {
138 if (do_unlink(fname) == 0) {
140 rprintf(FINFO, "sender removed %s\n", fname + offset);
142 rsyserr(FERROR, errno, "sender failed to remove %s", fname + offset);
146 static void write_ndx_and_attrs(int f_out, int ndx, int iflags,
147 uchar fnamecmp_type, char *buf, int len)
149 write_int(f_out, ndx);
150 if (protocol_version < 29)
152 write_shortint(f_out, iflags);
153 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
154 write_byte(f_out, fnamecmp_type);
155 if (iflags & ITEM_XNAME_FOLLOWS)
156 write_vstring(f_out, buf, len);
159 /* This is also used by receive.c with f_out = -1. */
160 int read_item_attrs(int f_in, int f_out, int ndx, uchar *type_ptr,
161 char *buf, int *len_ptr)
164 uchar fnamecmp_type = FNAMECMP_FNAME;
165 int iflags = protocol_version >= 29 ? read_shortint(f_in)
166 : ITEM_TRANSFER | ITEM_MISSING_DATA;
168 /* Handle the new keep-alive (no-op) packet. */
169 if (ndx == the_file_list->count && iflags == ITEM_IS_NEW)
171 else if (ndx < 0 || ndx >= the_file_list->count) {
172 rprintf(FERROR, "Invalid file index: %d (count=%d) [%s]\n",
173 ndx, the_file_list->count, who_am_i());
174 exit_cleanup(RERR_PROTOCOL);
175 } else if (iflags == ITEM_IS_NEW) {
176 rprintf(FERROR, "Invalid itemized flag word: %x [%s]\n",
178 exit_cleanup(RERR_PROTOCOL);
181 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
182 fnamecmp_type = read_byte(f_in);
183 *type_ptr = fnamecmp_type;
185 if (iflags & ITEM_XNAME_FOLLOWS) {
186 if ((len = read_vstring(f_in, buf, MAXPATHLEN)) < 0)
187 exit_cleanup(RERR_PROTOCOL);
194 if (iflags & ITEM_TRANSFER) {
195 if (!S_ISREG(the_file_list->files[ndx]->mode)) {
197 "received request to transfer non-regular file: %d [%s]\n",
199 exit_cleanup(RERR_PROTOCOL);
201 } else if (f_out >= 0) {
202 write_ndx_and_attrs(f_out, ndx, iflags,
203 fnamecmp_type, buf, len);
209 void send_files(struct file_list *flist, int f_out, int f_in)
212 struct sum_struct *s;
213 struct map_struct *mbuf = NULL;
215 char *fname2, fname[MAXPATHLEN];
216 char xname[MAXPATHLEN];
219 struct file_struct *file;
220 int phase = 0, max_phase = protocol_version >= 29 ? 2 : 1;
221 struct stats initial_stats;
222 int save_make_backups = make_backups;
223 int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i;
224 enum logcode log_code = log_before_transfer ? FLOG : FINFO;
225 int f_xfer = write_batch < 0 ? batch_fd : f_out;
229 rprintf(FINFO, "send_files starting\n");
236 if (++phase > max_phase)
238 csum_length = SUM_LENGTH;
240 rprintf(FINFO, "send_files phase=%d\n", phase);
241 write_int(f_out, -1);
242 /* For inplace: redo phase turns off the backup
243 * flag so that we do a regular inplace send. */
249 iflags = read_item_attrs(f_in, f_out, i, &fnamecmp_type,
251 if (iflags == ITEM_IS_NEW) /* no-op packet */
254 file = flist->files[i];
255 if (file->dir.root) {
256 /* N.B. We're sure that this fits, so offset is OK. */
257 offset = strlcpy(fname, file->dir.root, sizeof fname);
258 if (!offset || fname[offset-1] != '/')
259 fname[offset++] = '/';
262 fname2 = f_name(file, fname + offset);
265 rprintf(FINFO, "send_files(%d, %s)\n", i, fname);
267 if (!(iflags & ITEM_TRANSFER)) {
268 maybe_log_item(file, iflags, itemizing, xname);
273 "got transfer request in phase 2 [%s]\n",
275 exit_cleanup(RERR_PROTOCOL);
278 updating_basis_file = inplace && (protocol_version >= 29
279 ? fnamecmp_type == FNAMECMP_FNAME : !make_backups);
281 stats.current_file_index = i;
282 stats.num_transferred_files++;
283 stats.total_transferred_size += file->length;
285 if (!do_xfers) { /* log the transfer */
286 log_item(FCLIENT, file, &stats, iflags, NULL);
287 write_ndx_and_attrs(f_out, i, iflags, fnamecmp_type,
292 initial_stats = stats;
294 if (!(s = receive_sums(f_in))) {
295 io_error |= IOERR_GENERAL;
296 rprintf(FERROR, "receive_sums failed\n");
300 fd = do_open(fname, O_RDONLY, 0);
302 if (errno == ENOENT) {
303 enum logcode c = am_daemon
304 && protocol_version < 28 ? FERROR
306 io_error |= IOERR_VANISHED;
307 rprintf(c, "file has vanished: %s\n",
310 io_error |= IOERR_GENERAL;
311 rsyserr(FERROR, errno,
312 "send_files failed to open %s",
319 /* map the local file */
320 if (do_fstat(fd, &st) != 0) {
321 io_error |= IOERR_GENERAL;
322 rsyserr(FERROR, errno, "fstat failed");
329 int32 read_size = MAX(s->blength * 3, MAX_MAP_SIZE);
330 mbuf = map_file(fd, st.st_size, read_size, s->blength);
335 rprintf(FINFO, "send_files mapped %s of size %.0f\n",
336 fname, (double)st.st_size);
339 write_ndx_and_attrs(f_out, i, iflags, fnamecmp_type,
341 write_sum_head(f_xfer, s);
344 rprintf(FINFO, "calling match_sums %s\n", fname);
346 if (log_before_transfer)
347 log_item(FCLIENT, file, &initial_stats, iflags, NULL);
348 else if (!am_server && verbose && do_progress)
349 rprintf(FCLIENT, "%s\n", fname2);
351 set_compression(fname);
353 match_sums(f_xfer, s, mbuf, st.st_size);
355 end_progress(st.st_size);
357 log_item(log_code, file, &initial_stats, iflags, NULL);
360 j = unmap_file(mbuf);
362 io_error |= IOERR_GENERAL;
364 "read errors mapping %s",
373 rprintf(FINFO, "sender finished %s\n", fname);
375 /* Flag that we actually sent this entry. */
376 file->flags |= FLAG_SENT;
378 make_backups = save_make_backups;
381 rprintf(FINFO, "send files finished\n");
385 write_int(f_out, -1);