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;
38 extern int write_batch;
39 extern struct stats stats;
40 extern struct file_list *the_file_list;
41 extern char *log_format;
47 * The sender gets checksums from the generator, calculates deltas,
48 * and transmits them to the receiver. The sender process runs on the
49 * machine holding the source files.
53 * Receive the checksums for a buffer
55 static struct sum_struct *receive_sums(int f)
61 if (!(s = new(struct sum_struct)))
62 out_of_memory("receive_sums");
69 rprintf(FINFO, "count=%.0f n=%ld rem=%ld\n",
70 (double)s->count, (long)s->blength, (long)s->remainder);
76 if (!(s->sums = new_array(struct sum_buf, s->count)))
77 out_of_memory("receive_sums");
79 for (i = 0; i < s->count; i++) {
80 s->sums[i].sum1 = read_int(f);
81 read_buf(f, s->sums[i].sum2, s->s2length);
83 s->sums[i].offset = offset;
86 if (i == s->count-1 && s->remainder != 0)
87 s->sums[i].len = s->remainder;
89 s->sums[i].len = s->blength;
90 offset += s->sums[i].len;
94 "chunk[%d] len=%d offset=%.0f sum1=%08x\n",
95 i, s->sums[i].len, (double)s->sums[i].offset,
105 void successful_send(int ndx)
107 char fname[MAXPATHLEN];
108 struct file_struct *file;
111 if (ndx < 0 || ndx >= the_file_list->count)
114 file = the_file_list->files[ndx];
115 /* The generator might tell us about symlinks we didn't send. */
116 if (!(file->flags & FLAG_SENT) && !S_ISLNK(file->mode))
118 if (file->dir.root) {
119 offset = stringjoin(fname, sizeof fname,
120 file->dir.root, "/", NULL);
123 f_name_to(file, fname + offset);
124 if (remove_sent_files && do_unlink(fname) == 0 && verbose > 1) {
125 rprintf(FINFO, "sender removed %s\n",
126 safe_fname(fname + offset));
130 static void write_ndx_and_attrs(int f_out, int ndx, int iflags,
131 uchar fnamecmp_type, char *buf, int len)
133 write_int(f_out, ndx);
134 if (protocol_version < 29)
136 write_shortint(f_out, iflags);
137 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
138 write_byte(f_out, fnamecmp_type);
139 if (iflags & ITEM_XNAME_FOLLOWS)
140 write_vstring(f_out, buf, len);
143 /* This is also used by receive.c with f_out = -1. */
144 int read_item_attrs(int f_in, int f_out, int ndx, uchar *type_ptr,
145 char *buf, int *len_ptr)
148 uchar fnamecmp_type = FNAMECMP_FNAME;
149 int iflags = protocol_version >= 29 ? read_shortint(f_in)
150 : ITEM_TRANSFER | ITEM_MISSING_DATA;
152 /* Handle the new keep-alive (no-op) packet. */
153 if (ndx == the_file_list->count && iflags == ITEM_IS_NEW)
155 else if (ndx < 0 || ndx >= the_file_list->count) {
156 rprintf(FERROR, "Invalid file index: %d (count=%d) [%s]\n",
157 ndx, the_file_list->count, who_am_i());
158 exit_cleanup(RERR_PROTOCOL);
159 } else if (iflags == ITEM_IS_NEW) {
160 rprintf(FERROR, "Invalid itemized flag word: %x [%s]\n",
162 exit_cleanup(RERR_PROTOCOL);
165 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
166 fnamecmp_type = read_byte(f_in);
167 *type_ptr = fnamecmp_type;
169 if (iflags & ITEM_XNAME_FOLLOWS) {
170 if ((len = read_vstring(f_in, buf, MAXPATHLEN)) < 0)
171 exit_cleanup(RERR_PROTOCOL);
178 if (iflags & ITEM_TRANSFER) {
179 if (!S_ISREG(the_file_list->files[ndx]->mode)) {
181 "received request to transfer non-regular file: %d [%s]\n",
183 exit_cleanup(RERR_PROTOCOL);
185 } else if (f_out >= 0) {
186 write_ndx_and_attrs(f_out, ndx, iflags,
187 fnamecmp_type, buf, len);
193 void send_files(struct file_list *flist, int f_out, int f_in)
196 struct sum_struct *s;
197 struct map_struct *mbuf = NULL;
199 char *fname2, fname[MAXPATHLEN];
200 char xname[MAXPATHLEN];
203 struct file_struct *file;
204 int phase = 0, max_phase = protocol_version >= 29 ? 2 : 1;
205 struct stats initial_stats;
206 int save_make_backups = make_backups;
207 int itemizing = am_daemon ? daemon_log_format_has_i
208 : !am_server && log_format_has_i;
209 int f_xfer = write_batch < 0 ? batch_fd : f_out;
213 rprintf(FINFO, "send_files starting\n");
220 if (++phase > max_phase)
222 csum_length = SUM_LENGTH;
224 rprintf(FINFO, "send_files phase=%d\n", phase);
225 write_int(f_out, -1);
226 /* For inplace: redo phase turns off the backup
227 * flag so that we do a regular inplace send. */
232 iflags = read_item_attrs(f_in, f_out, i, &fnamecmp_type,
234 if (iflags == ITEM_IS_NEW) /* no-op packet */
237 file = flist->files[i];
238 if (file->dir.root) {
239 /* N.B. We're sure that this fits, so offset is OK. */
240 offset = strlcpy(fname, file->dir.root, sizeof fname);
241 if (!offset || fname[offset-1] != '/')
242 fname[offset++] = '/';
245 fname2 = f_name_to(file, fname + offset);
248 rprintf(FINFO, "send_files(%d, %s)\n", i, fname);
250 if (!(iflags & ITEM_TRANSFER)) {
251 maybe_log_item(file, iflags, itemizing, xname);
256 "got transfer request in phase 2 [%s]\n",
258 exit_cleanup(RERR_PROTOCOL);
261 updating_basis_file = inplace && (protocol_version >= 29
262 ? fnamecmp_type == FNAMECMP_FNAME : !make_backups);
264 stats.current_file_index = i;
265 stats.num_transferred_files++;
266 stats.total_transferred_size += file->length;
268 if (!do_xfers) { /* log the transfer */
269 if (!am_server && log_format)
270 log_item(file, &stats, iflags, NULL);
271 write_ndx_and_attrs(f_out, i, iflags, fnamecmp_type,
276 initial_stats = stats;
278 if (!(s = receive_sums(f_in))) {
279 io_error |= IOERR_GENERAL;
280 rprintf(FERROR, "receive_sums failed\n");
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, errno,
296 "send_files failed to open %s",
303 /* map the local file */
304 if (do_fstat(fd, &st) != 0) {
305 io_error |= IOERR_GENERAL;
306 rsyserr(FERROR, errno, "fstat failed");
313 int32 read_size = MAX(s->blength * 3, MAX_MAP_SIZE);
314 mbuf = map_file(fd, st.st_size, read_size, s->blength);
319 rprintf(FINFO, "send_files mapped %s of size %.0f\n",
320 safe_fname(fname), (double)st.st_size);
323 write_ndx_and_attrs(f_out, i, iflags, fnamecmp_type,
325 write_sum_head(f_xfer, s);
328 rprintf(FINFO, "calling match_sums %s\n",
332 if (log_before_transfer)
333 log_item(file, &initial_stats, iflags, NULL);
334 else if (!am_server && verbose && do_progress)
335 rprintf(FINFO, "%s\n", safe_fname(fname2));
337 set_compression(fname);
339 match_sums(f_xfer, s, mbuf, st.st_size);
341 end_progress(st.st_size);
343 if (!log_before_transfer)
344 log_item(file, &initial_stats, iflags, NULL);
347 j = unmap_file(mbuf);
349 io_error |= IOERR_GENERAL;
351 "read errors mapping %s",
360 rprintf(FINFO, "sender finished %s\n",
364 /* Flag that we actually sent this entry. */
365 file->flags |= FLAG_SENT;
367 make_backups = save_make_backups;
370 rprintf(FINFO, "send files finished\n");
374 write_int(f_out, -1);