2 * Routines only used by the sending process.
4 * Copyright (C) 1996 Andrew Tridgell
5 * Copyright (C) 1996 Paul Mackerras
6 * Copyright (C) 2003-2007 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 version 3 as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, visit the http://fsf.org website.
28 extern int inc_recurse;
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 preserve_xattrs;
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, *dir_flist;
51 * The sender gets checksums from the generator, calculates deltas,
52 * and transmits them to the receiver. The sender process runs on the
53 * machine holding the source files.
57 * Receive the checksums for a buffer
59 static struct sum_struct *receive_sums(int f)
63 int lull_mod = allowed_lull * 5;
66 if (!(s = new(struct sum_struct)))
67 out_of_memory("receive_sums");
74 rprintf(FINFO, "count=%.0f n=%ld rem=%ld\n",
75 (double)s->count, (long)s->blength, (long)s->remainder);
78 if (append_mode > 0) {
79 s->flength = (OFF_T)s->count * s->blength;
81 s->flength -= s->blength - s->remainder;
88 if (!(s->sums = new_array(struct sum_buf, s->count)))
89 out_of_memory("receive_sums");
91 for (i = 0; i < s->count; i++) {
92 s->sums[i].sum1 = read_int(f);
93 read_buf(f, s->sums[i].sum2, s->s2length);
95 s->sums[i].offset = offset;
98 if (i == s->count-1 && s->remainder != 0)
99 s->sums[i].len = s->remainder;
101 s->sums[i].len = s->blength;
102 offset += s->sums[i].len;
104 if (allowed_lull && !(i % lull_mod))
105 maybe_send_keepalive();
109 "chunk[%d] len=%d offset=%.0f sum1=%08x\n",
110 i, s->sums[i].len, (double)s->sums[i].offset,
120 void successful_send(int ndx)
122 char fname[MAXPATHLEN];
123 struct file_struct *file;
124 struct file_list *flist;
126 if (!remove_source_files)
129 if (!(flist = flist_for_ndx(ndx))) {
131 "INTERNAL ERROR: unable to find flist for item %d\n",
136 file = flist->files[ndx - flist->ndx_start];
137 if (!push_pathname(F_PATHNAME(file), -1))
141 if (do_unlink(fname) == 0) {
143 rprintf(FINFO, "sender removed %s\n", fname);
145 rsyserr(FERROR, errno, "sender failed to remove %s", fname);
148 static void write_ndx_and_attrs(int f_out, int ndx, int iflags,
149 const char *fname, struct file_struct *file,
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);
160 #ifdef SUPPORT_XATTRS
161 if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && !dry_run)
162 send_xattr_request(fname, file, f_out);
166 void send_files(int f_in, int f_out)
169 struct sum_struct *s;
170 struct map_struct *mbuf = NULL;
172 char fname[MAXPATHLEN], xname[MAXPATHLEN];
173 const char *path, *slash;
176 struct file_struct *file;
177 int phase = 0, max_phase = protocol_version >= 29 ? 2 : 1;
178 struct stats initial_stats;
179 int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i;
180 enum logcode log_code = log_before_transfer ? FLOG : FINFO;
181 int f_xfer = write_batch < 0 ? batch_fd : f_out;
185 rprintf(FINFO, "send_files starting\n");
189 send_extra_file_list(f_out, FILECNT_LOOKAHEAD);
191 /* This call also sets cur_flist. */
192 ndx = read_ndx_and_attrs(f_in, &iflags, &fnamecmp_type,
194 if (ndx == NDX_DONE) {
195 if (inc_recurse && first_flist) {
196 flist_free(first_flist);
198 write_ndx(f_out, NDX_DONE);
202 if (++phase > max_phase)
205 rprintf(FINFO, "send_files phase=%d\n", phase);
206 write_ndx(f_out, NDX_DONE);
211 send_extra_file_list(f_out, FILECNT_LOOKAHEAD);
213 if (ndx - cur_flist->ndx_start >= 0)
214 file = cur_flist->files[ndx - cur_flist->ndx_start];
216 file = dir_flist->files[cur_flist->parent_ndx];
217 if (F_PATHNAME(file)) {
218 path = F_PATHNAME(file);
223 if (!push_pathname(F_PATHNAME(file), -1))
228 rprintf(FINFO, "send_files(%d, %s%s%s)\n", ndx, path,slash,fname);
230 #ifdef SUPPORT_XATTRS
231 if (preserve_xattrs && iflags & ITEM_REPORT_XATTR)
232 recv_xattr_request(file, f_in);
235 if (!(iflags & ITEM_TRANSFER)) {
236 maybe_log_item(file, iflags, itemizing, xname);
237 write_ndx_and_attrs(f_out, ndx, iflags, fname, file,
238 fnamecmp_type, xname, xlen);
243 "got transfer request in phase 2 [%s]\n",
245 exit_cleanup(RERR_PROTOCOL);
248 if (file->flags & FLAG_FILE_SENT) {
249 if (csum_length == SHORT_SUM_LENGTH) {
250 /* For inplace: redo phase turns off the backup
251 * flag so that we do a regular inplace send. */
252 make_backups = -make_backups;
253 append_mode = -append_mode;
254 csum_length = SUM_LENGTH;
257 if (csum_length != SHORT_SUM_LENGTH) {
258 make_backups = -make_backups;
259 append_mode = -append_mode;
260 csum_length = SHORT_SUM_LENGTH;
264 updating_basis_file = inplace && (protocol_version >= 29
265 ? fnamecmp_type == FNAMECMP_FNAME : make_backups <= 0);
267 stats.current_file_index = ndx;
268 stats.num_transferred_files++;
269 stats.total_transferred_size += F_LENGTH(file);
271 if (!do_xfers) { /* log the transfer */
272 log_item(FCLIENT, file, &stats, iflags, NULL);
273 write_ndx_and_attrs(f_out, ndx, iflags, fname, file,
274 fnamecmp_type, xname, xlen);
278 initial_stats = stats;
280 if (!(s = receive_sums(f_in))) {
281 io_error |= IOERR_GENERAL;
282 rprintf(FERROR, "receive_sums failed\n");
283 exit_cleanup(RERR_PROTOCOL);
286 fd = do_open(fname, O_RDONLY, 0);
288 if (errno == ENOENT) {
289 enum logcode c = am_daemon
290 && protocol_version < 28 ? FERROR
292 io_error |= IOERR_VANISHED;
293 rprintf(c, "file has vanished: %s\n",
296 io_error |= IOERR_GENERAL;
297 rsyserr(FERROR, errno,
298 "send_files failed to open %s",
302 if (protocol_version >= 30)
303 send_msg_int(MSG_NO_SEND, ndx);
307 /* map the local file */
308 if (do_fstat(fd, &st) != 0) {
309 io_error |= IOERR_GENERAL;
310 rsyserr(FERROR, errno, "fstat failed");
313 exit_cleanup(RERR_PROTOCOL);
317 int32 read_size = MAX(s->blength * 3, MAX_MAP_SIZE);
318 mbuf = map_file(fd, st.st_size, read_size, s->blength);
323 rprintf(FINFO, "send_files mapped %s%s%s of size %.0f\n",
324 path,slash,fname, (double)st.st_size);
327 write_ndx_and_attrs(f_out, ndx, iflags, fname, file,
328 fnamecmp_type, xname, xlen);
329 write_sum_head(f_xfer, s);
332 rprintf(FINFO, "calling match_sums %s%s%s\n", path,slash,fname);
334 if (log_before_transfer)
335 log_item(FCLIENT, file, &initial_stats, iflags, NULL);
336 else if (!am_server && verbose && do_progress)
337 rprintf(FCLIENT, "%s\n", fname);
339 set_compression(fname);
341 match_sums(f_xfer, s, mbuf, st.st_size);
343 end_progress(st.st_size);
345 log_item(log_code, file, &initial_stats, iflags, NULL);
348 j = unmap_file(mbuf);
350 io_error |= IOERR_GENERAL;
352 "read errors mapping %s",
361 rprintf(FINFO, "sender finished %s%s%s\n", path,slash,fname);
363 /* Flag that we actually sent this entry. */
364 file->flags |= FLAG_FILE_SENT;
366 if (make_backups < 0)
367 make_backups = -make_backups;
370 rprintf(FINFO, "send files finished\n");
374 write_ndx(f_out, NDX_DONE);