2 * Routines only used by the sending process.
4 * Copyright (C) 1996 Andrew Tridgell
5 * Copyright (C) 1996 Paul Mackerras
6 * Copyright (C) 2003-2008 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 3 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, 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;
43 extern int write_batch;
44 extern struct stats stats;
45 extern struct file_list *cur_flist, *first_flist, *dir_flist;
50 * The sender gets checksums from the generator, calculates deltas,
51 * and transmits them to the receiver. The sender process runs on the
52 * machine holding the source files.
56 * Receive the checksums for a buffer
58 static struct sum_struct *receive_sums(int f)
62 int lull_mod = allowed_lull * 5;
65 if (!(s = new(struct sum_struct)))
66 out_of_memory("receive_sums");
72 if (DEBUG_GTE(DELTASUM, 3)) {
73 rprintf(FINFO, "count=%s n=%ld rem=%ld\n",
74 big_num(s->count, 0), (long)s->blength, (long)s->remainder);
77 if (append_mode > 0) {
78 s->flength = (OFF_T)s->count * s->blength;
80 s->flength -= s->blength - s->remainder;
87 if (!(s->sums = new_array(struct sum_buf, s->count)))
88 out_of_memory("receive_sums");
90 for (i = 0; i < s->count; i++) {
91 s->sums[i].sum1 = read_int(f);
92 read_buf(f, s->sums[i].sum2, s->s2length);
94 s->sums[i].offset = offset;
97 if (i == s->count-1 && s->remainder != 0)
98 s->sums[i].len = s->remainder;
100 s->sums[i].len = s->blength;
101 offset += s->sums[i].len;
103 if (allowed_lull && !(i % lull_mod))
104 maybe_send_keepalive();
106 if (DEBUG_GTE(DELTASUM, 3)) {
108 "chunk[%d] len=%d offset=%s sum1=%08x\n",
109 i, s->sums[i].len, big_num(s->sums[i].offset, 0),
119 void successful_send(int ndx)
121 char fname[MAXPATHLEN];
122 struct file_struct *file;
123 struct file_list *flist;
125 if (!remove_source_files)
128 flist = flist_for_ndx(ndx, "successful_send");
129 file = flist->files[ndx - flist->ndx_start];
130 if (!change_pathname(file, NULL, 0))
134 if (do_unlink(fname) == 0) {
135 if (INFO_GTE(REMOVE, 1))
136 rprintf(FINFO, "sender removed %s\n", fname);
138 rsyserr(FERROR, errno, "sender failed to remove %s", fname);
141 static void write_ndx_and_attrs(int f_out, int ndx, int iflags,
142 const char *fname, struct file_struct *file,
143 uchar fnamecmp_type, char *buf, int len)
145 write_ndx(f_out, ndx);
146 if (protocol_version < 29)
148 write_shortint(f_out, iflags);
149 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
150 write_byte(f_out, fnamecmp_type);
151 if (iflags & ITEM_XNAME_FOLLOWS)
152 write_vstring(f_out, buf, len);
153 #ifdef SUPPORT_XATTRS
154 if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && !dry_run)
155 send_xattr_request(fname, file, f_out);
159 void send_files(int f_in, int f_out)
162 struct sum_struct *s;
163 struct map_struct *mbuf = NULL;
165 char fname[MAXPATHLEN], xname[MAXPATHLEN];
166 const char *path, *slash;
169 struct file_struct *file;
170 int phase = 0, max_phase = protocol_version >= 29 ? 2 : 1;
171 struct stats initial_stats;
172 int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i;
173 enum logcode log_code = log_before_transfer ? FLOG : FINFO;
174 int f_xfer = write_batch < 0 ? batch_fd : f_out;
177 if (DEBUG_GTE(SEND, 1))
178 rprintf(FINFO, "send_files starting\n");
182 send_extra_file_list(f_out, FILECNT_LOOKAHEAD);
184 /* This call also sets cur_flist. */
185 ndx = read_ndx_and_attrs(f_in, &iflags, &fnamecmp_type,
187 if (ndx == NDX_DONE) {
188 if (!am_server && INFO_GTE(PROGRESS, 2) && cur_flist) {
189 set_current_file_index(NULL, 0);
192 if (inc_recurse && first_flist) {
193 flist_free(first_flist);
195 write_ndx(f_out, NDX_DONE);
199 if (++phase > max_phase)
201 if (DEBUG_GTE(SEND, 1))
202 rprintf(FINFO, "send_files phase=%d\n", phase);
203 write_ndx(f_out, NDX_DONE);
208 send_extra_file_list(f_out, FILECNT_LOOKAHEAD);
210 if (ndx - cur_flist->ndx_start >= 0)
211 file = cur_flist->files[ndx - cur_flist->ndx_start];
213 file = dir_flist->files[cur_flist->parent_ndx];
214 if (F_PATHNAME(file)) {
215 path = F_PATHNAME(file);
220 if (!change_pathname(file, NULL, 0))
224 if (DEBUG_GTE(SEND, 1))
225 rprintf(FINFO, "send_files(%d, %s%s%s)\n", ndx, path,slash,fname);
227 #ifdef SUPPORT_XATTRS
228 if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && !dry_run)
229 recv_xattr_request(file, f_in);
232 if (!(iflags & ITEM_TRANSFER)) {
233 maybe_log_item(file, iflags, itemizing, xname);
234 write_ndx_and_attrs(f_out, ndx, iflags, fname, file,
235 fnamecmp_type, xname, xlen);
240 "got transfer request in phase 2 [%s]\n",
242 exit_cleanup(RERR_PROTOCOL);
245 if (file->flags & FLAG_FILE_SENT) {
246 if (csum_length == SHORT_SUM_LENGTH) {
247 /* For inplace: redo phase turns off the backup
248 * flag so that we do a regular inplace send. */
249 make_backups = -make_backups;
250 append_mode = -append_mode;
251 csum_length = SUM_LENGTH;
254 if (csum_length != SHORT_SUM_LENGTH) {
255 make_backups = -make_backups;
256 append_mode = -append_mode;
257 csum_length = SHORT_SUM_LENGTH;
261 updating_basis_file = inplace && (protocol_version >= 29
262 ? fnamecmp_type == FNAMECMP_FNAME : make_backups <= 0);
264 if (!am_server && INFO_GTE(PROGRESS, 1))
265 set_current_file_index(file, ndx);
266 stats.num_transferred_files++;
267 stats.total_transferred_size += F_LENGTH(file);
269 if (!do_xfers) { /* log the transfer */
270 log_item(FCLIENT, file, &stats, iflags, NULL);
271 write_ndx_and_attrs(f_out, ndx, iflags, fname, file,
272 fnamecmp_type, xname, xlen);
276 initial_stats = stats;
278 if (!(s = receive_sums(f_in))) {
279 io_error |= IOERR_GENERAL;
280 rprintf(FERROR_XFER, "receive_sums failed\n");
281 exit_cleanup(RERR_PROTOCOL);
284 fd = do_open(fname, O_RDONLY, 0);
286 if (errno == ENOENT) {
287 enum logcode c = am_daemon
288 && protocol_version < 28 ? FERROR
290 io_error |= IOERR_VANISHED;
291 rprintf(c, "file has vanished: %s\n",
294 io_error |= IOERR_GENERAL;
295 rsyserr(FERROR_XFER, errno,
296 "send_files failed to open %s",
300 if (protocol_version >= 30)
301 send_msg_int(MSG_NO_SEND, ndx);
305 /* map the local file */
306 if (do_fstat(fd, &st) != 0) {
307 io_error |= IOERR_GENERAL;
308 rsyserr(FERROR_XFER, errno, "fstat failed");
311 exit_cleanup(RERR_PROTOCOL);
315 int32 read_size = MAX(s->blength * 3, MAX_MAP_SIZE);
316 mbuf = map_file(fd, st.st_size, read_size, s->blength);
320 if (DEBUG_GTE(DELTASUM, 2)) {
321 rprintf(FINFO, "send_files mapped %s%s%s of size %s\n",
322 path,slash,fname, big_num(st.st_size, 0));
325 write_ndx_and_attrs(f_out, ndx, iflags, fname, file,
326 fnamecmp_type, xname, xlen);
327 write_sum_head(f_xfer, s);
329 if (DEBUG_GTE(DELTASUM, 2))
330 rprintf(FINFO, "calling match_sums %s%s%s\n", path,slash,fname);
332 if (log_before_transfer)
333 log_item(FCLIENT, file, &initial_stats, iflags, NULL);
334 else if (!am_server && INFO_GTE(NAME, 1) && INFO_EQ(PROGRESS, 1))
335 rprintf(FCLIENT, "%s\n", fname);
337 set_compression(fname);
339 match_sums(f_xfer, s, mbuf, st.st_size);
340 if (INFO_GTE(PROGRESS, 1))
341 end_progress(st.st_size);
343 log_item(log_code, file, &initial_stats, iflags, NULL);
346 j = unmap_file(mbuf);
348 io_error |= IOERR_GENERAL;
349 rsyserr(FERROR_XFER, j,
350 "read errors mapping %s",
358 if (DEBUG_GTE(SEND, 1))
359 rprintf(FINFO, "sender finished %s%s%s\n", path,slash,fname);
361 /* Flag that we actually sent this entry. */
362 file->flags |= FLAG_FILE_SENT;
364 if (make_backups < 0)
365 make_backups = -make_backups;
367 if (DEBUG_GTE(SEND, 1))
368 rprintf(FINFO, "send files finished\n");
372 write_ndx(f_out, NDX_DONE);