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;
31 extern int protocol_version;
32 extern int remove_sent_files;
33 extern int updating_basis_file;
34 extern int make_backups;
35 extern int do_progress;
37 extern struct stats stats;
38 extern struct file_list *the_file_list;
39 extern char *log_format;
45 * The sender gets checksums from the generator, calculates deltas,
46 * and transmits them to the receiver. The sender process runs on the
47 * machine holding the source files.
51 * Receive the checksums for a buffer
53 static struct sum_struct *receive_sums(int f)
59 if (!(s = new(struct sum_struct)))
60 out_of_memory("receive_sums");
67 rprintf(FINFO, "count=%.0f n=%ld rem=%ld\n",
68 (double)s->count, (long)s->blength, (long)s->remainder);
74 if (!(s->sums = new_array(struct sum_buf, s->count)))
75 out_of_memory("receive_sums");
77 for (i = 0; i < s->count; i++) {
78 s->sums[i].sum1 = read_int(f);
79 read_buf(f, s->sums[i].sum2, s->s2length);
81 s->sums[i].offset = offset;
84 if (i == s->count-1 && s->remainder != 0)
85 s->sums[i].len = s->remainder;
87 s->sums[i].len = s->blength;
88 offset += s->sums[i].len;
92 "chunk[%d] len=%d offset=%.0f sum1=%08x\n",
93 i, s->sums[i].len, (double)s->sums[i].offset,
103 void successful_send(int ndx)
105 char fname[MAXPATHLEN];
106 struct file_struct *file;
109 if (ndx < 0 || ndx >= the_file_list->count)
112 file = the_file_list->files[ndx];
113 /* The generator might tell us about symlinks we didn't send. */
114 if (!(file->flags & FLAG_SENT) && !S_ISLNK(file->mode))
116 if (file->dir.root) {
117 offset = stringjoin(fname, sizeof fname,
118 file->dir.root, "/", NULL);
121 f_name_to(file, fname + offset);
122 if (remove_sent_files && do_unlink(fname) == 0 && verbose > 1) {
123 rprintf(FINFO, "sender removed %s\n",
124 safe_fname(fname + offset));
128 static void write_ndx_and_attrs(int f_out, int ndx, int iflags,
129 uchar fnamecmp_type, char *buf, int len)
131 write_int(f_out, ndx);
132 if (protocol_version < 29)
134 write_shortint(f_out, iflags);
135 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
136 write_byte(f_out, fnamecmp_type);
137 if (iflags & ITEM_XNAME_FOLLOWS)
138 write_vstring(f_out, buf, len);
141 /* This is also used by receive.c with f_out = -1. */
142 int read_item_attrs(int f_in, int f_out, int ndx, uchar *type_ptr,
143 char *buf, int *len_ptr)
146 uchar fnamecmp_type = FNAMECMP_FNAME;
147 int iflags = protocol_version >= 29 ? read_shortint(f_in)
148 : ITEM_TRANSFER | ITEM_MISSING_DATA;
150 /* Handle the new keep-alive (no-op) packet. */
151 if (ndx == the_file_list->count && iflags == ITEM_IS_NEW)
153 else if (ndx < 0 || ndx >= the_file_list->count) {
154 rprintf(FERROR, "Invalid file index: %d (count=%d) [%s]\n",
155 ndx, the_file_list->count, who_am_i());
156 exit_cleanup(RERR_PROTOCOL);
157 } else if (iflags == ITEM_IS_NEW) {
158 rprintf(FERROR, "Invalid itemized flag word: %x [%s]\n",
160 exit_cleanup(RERR_PROTOCOL);
163 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
164 fnamecmp_type = read_byte(f_in);
165 *type_ptr = fnamecmp_type;
167 if (iflags & ITEM_XNAME_FOLLOWS) {
168 if ((len = read_vstring(f_in, buf, MAXPATHLEN)) < 0)
169 exit_cleanup(RERR_PROTOCOL);
176 if (iflags & ITEM_TRANSFER) {
177 if (!S_ISREG(the_file_list->files[ndx]->mode)) {
179 "received request to transfer non-regular file: %d [%s]\n",
181 exit_cleanup(RERR_PROTOCOL);
183 } else if (f_out >= 0) {
184 write_ndx_and_attrs(f_out, ndx, iflags,
185 fnamecmp_type, buf, len);
191 void send_files(struct file_list *flist, int f_out, int f_in)
194 struct sum_struct *s;
195 struct map_struct *mbuf = NULL;
197 char *fname2, fname[MAXPATHLEN];
198 char xname[MAXPATHLEN];
201 struct file_struct *file;
202 int phase = 0, max_phase = protocol_version >= 29 ? 2 : 1;
203 struct stats initial_stats;
204 int save_make_backups = make_backups;
205 int itemizing = am_daemon ? daemon_log_format_has_i
206 : !am_server && log_format_has_i;
210 rprintf(FINFO, "send_files starting\n");
217 if (++phase > max_phase)
219 csum_length = SUM_LENGTH;
221 rprintf(FINFO, "send_files phase=%d\n", phase);
222 write_int(f_out, -1);
223 /* For inplace: redo phase turns off the backup
224 * flag so that we do a regular inplace send. */
229 iflags = read_item_attrs(f_in, f_out, i, &fnamecmp_type,
231 if (iflags == ITEM_IS_NEW) /* no-op packet */
234 file = flist->files[i];
235 if (file->dir.root) {
236 /* N.B. We're sure that this fits, so offset is OK. */
237 offset = strlcpy(fname, file->dir.root, sizeof fname);
238 if (!offset || fname[offset-1] != '/')
239 fname[offset++] = '/';
242 fname2 = f_name_to(file, fname + offset);
245 rprintf(FINFO, "send_files(%d, %s)\n", i, fname);
247 if (!(iflags & ITEM_TRANSFER)) {
248 maybe_log_item(file, iflags, itemizing, xname);
253 "got transfer request in phase 2 [%s]\n",
255 exit_cleanup(RERR_PROTOCOL);
258 updating_basis_file = inplace && (protocol_version >= 29
259 ? fnamecmp_type == FNAMECMP_FNAME : !make_backups);
261 stats.current_file_index = i;
262 stats.num_transferred_files++;
263 stats.total_transferred_size += file->length;
265 if (dry_run) { /* log the transfer */
266 if (!am_server && log_format)
267 log_item(file, &stats, iflags, NULL);
268 write_ndx_and_attrs(f_out, i, iflags, fnamecmp_type,
273 initial_stats = stats;
275 if (!(s = receive_sums(f_in))) {
276 io_error |= IOERR_GENERAL;
277 rprintf(FERROR, "receive_sums failed\n");
281 fd = do_open(fname, O_RDONLY, 0);
283 if (errno == ENOENT) {
284 enum logcode c = am_daemon
285 && protocol_version < 28 ? FERROR
287 io_error |= IOERR_VANISHED;
288 rprintf(c, "file has vanished: %s\n",
291 io_error |= IOERR_GENERAL;
292 rsyserr(FERROR, errno,
293 "send_files failed to open %s",
300 /* map the local file */
301 if (do_fstat(fd, &st) != 0) {
302 io_error |= IOERR_GENERAL;
303 rsyserr(FERROR, errno, "fstat failed");
310 int32 read_size = MAX(s->blength * 3, MAX_MAP_SIZE);
311 mbuf = map_file(fd, st.st_size, read_size, s->blength);
316 rprintf(FINFO, "send_files mapped %s of size %.0f\n",
317 safe_fname(fname), (double)st.st_size);
320 write_ndx_and_attrs(f_out, i, iflags, fnamecmp_type,
322 write_sum_head(f_out, s);
325 rprintf(FINFO, "calling match_sums %s\n",
329 if (log_before_transfer)
330 log_item(file, &initial_stats, iflags, NULL);
331 else if (!am_server && verbose && do_progress)
332 rprintf(FINFO, "%s\n", safe_fname(fname2));
334 set_compression(fname);
336 match_sums(f_out, s, mbuf, st.st_size);
338 end_progress(st.st_size);
340 if (!log_before_transfer)
341 log_item(file, &initial_stats, iflags, NULL);
344 j = unmap_file(mbuf);
346 io_error |= IOERR_GENERAL;
348 "read errors mapping %s",
357 rprintf(FINFO, "sender finished %s\n",
361 /* Flag that we actually sent this entry. */
362 file->flags |= FLAG_SENT;
364 make_backups = save_make_backups;
367 rprintf(FINFO, "send files finished\n");
371 write_int(f_out, -1);