Commit | Line | Data |
---|---|---|
0f78b815 WD |
1 | /* |
2 | * Socket and pipe I/O utilities used in rsync. | |
d62bcc17 | 3 | * |
0f78b815 WD |
4 | * Copyright (C) 1996-2001 Andrew Tridgell |
5 | * Copyright (C) 1996 Paul Mackerras | |
6 | * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org> | |
d3d07a5e | 7 | * Copyright (C) 2003-2008 Wayne Davison |
d62bcc17 | 8 | * |
880da007 | 9 | * This program is free software; you can redistribute it and/or modify |
8e41b68e WD |
10 | * it under the terms of the GNU General Public License as published by |
11 | * the Free Software Foundation; either version 3 of the License, or | |
12 | * (at your option) any later version. | |
d62bcc17 | 13 | * |
880da007 MP |
14 | * This program is distributed in the hope that it will be useful, |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
d62bcc17 | 18 | * |
e7c67065 | 19 | * You should have received a copy of the GNU General Public License along |
4fd842f9 | 20 | * with this program; if not, visit the http://fsf.org website. |
880da007 | 21 | */ |
720b47f2 | 22 | |
0f78b815 WD |
23 | /* Rsync provides its own multiplexing system, which is used to send |
24 | * stderr and stdout over a single socket. | |
87ee2481 MP |
25 | * |
26 | * For historical reasons this is off during the start of the | |
27 | * connection, but it's switched on quite early using | |
0f78b815 | 28 | * io_start_multiplex_out() and io_start_multiplex_in(). */ |
720b47f2 | 29 | |
720b47f2 | 30 | #include "rsync.h" |
1b42f628 | 31 | #include "ifuncs.h" |
720b47f2 | 32 | |
880da007 | 33 | /** If no timeout is specified then use a 60 second select timeout */ |
8cd9fd4e AT |
34 | #define SELECT_TIMEOUT 60 |
35 | ||
7a55d06e | 36 | extern int bwlimit; |
71e58630 | 37 | extern size_t bwlimit_writemax; |
6ba9279f | 38 | extern int io_timeout; |
d17e1dd2 WD |
39 | extern int am_server; |
40 | extern int am_daemon; | |
41 | extern int am_sender; | |
98f8c9a5 | 42 | extern int am_generator; |
3ea6e0e7 | 43 | extern int inc_recurse; |
8ef246e0 | 44 | extern int io_error; |
e626b29e | 45 | extern int eol_nulls; |
8ef246e0 | 46 | extern int flist_eof; |
7f9bf6b7 | 47 | extern int list_only; |
3b0a30eb | 48 | extern int read_batch; |
ba525f77 | 49 | extern int protect_args; |
b9f592fb WD |
50 | extern int checksum_seed; |
51 | extern int protocol_version; | |
47c11975 | 52 | extern int remove_source_files; |
cdf236aa | 53 | extern int preserve_hard_links; |
a800434a | 54 | extern struct stats stats; |
19531e1f | 55 | extern struct file_list *cur_flist; |
332cf6df | 56 | #ifdef ICONV_OPTION |
ba525f77 | 57 | extern int filesfrom_convert; |
332cf6df WD |
58 | extern iconv_t ic_send, ic_recv; |
59 | #endif | |
720b47f2 | 60 | |
93465f51 WD |
61 | int csum_length = SHORT_SUM_LENGTH; /* initial value */ |
62 | int allowed_lull = 0; | |
9e2409ab | 63 | int ignore_timeout = 0; |
b9f592fb | 64 | int batch_fd = -1; |
04c722d5 | 65 | int msgdone_cnt = 0; |
805edf9d | 66 | |
cb2e1f18 | 67 | /* Ignore an EOF error if non-zero. See whine_about_eof(). */ |
574c2500 | 68 | int kluge_around_eof = 0; |
7a55d06e | 69 | |
d17e1dd2 WD |
70 | int msg_fd_in = -1; |
71 | int msg_fd_out = -1; | |
cdf236aa WD |
72 | int sock_f_in = -1; |
73 | int sock_f_out = -1; | |
7a55d06e | 74 | |
8ef246e0 WD |
75 | static int iobuf_f_in = -1; |
76 | static char *iobuf_in; | |
77 | static size_t iobuf_in_siz; | |
78 | static size_t iobuf_in_ndx; | |
79 | static size_t iobuf_in_remaining; | |
80 | ||
81 | static int iobuf_f_out = -1; | |
82 | static char *iobuf_out; | |
83 | static int iobuf_out_cnt; | |
84 | ||
85 | int flist_forward_from = -1; | |
86 | ||
1f75bb10 WD |
87 | static int io_multiplexing_out; |
88 | static int io_multiplexing_in; | |
3b0a30eb WD |
89 | static time_t last_io_in; |
90 | static time_t last_io_out; | |
1f75bb10 WD |
91 | static int no_flush; |
92 | ||
b9f592fb WD |
93 | static int write_batch_monitor_in = -1; |
94 | static int write_batch_monitor_out = -1; | |
95 | ||
56014c8c WD |
96 | static int io_filesfrom_f_in = -1; |
97 | static int io_filesfrom_f_out = -1; | |
ba525f77 WD |
98 | static xbuf ff_buf = EMPTY_XBUF; |
99 | static char ff_lastchar; | |
332cf6df | 100 | #ifdef ICONV_OPTION |
ba525f77 | 101 | static xbuf iconv_buf = EMPTY_XBUF; |
332cf6df | 102 | #endif |
0b789446 | 103 | static int defer_forwarding_messages = 0, keep_defer_forwarding = 0; |
3b0a30eb | 104 | static int select_timeout = SELECT_TIMEOUT; |
d6081c82 WD |
105 | static int active_filecnt = 0; |
106 | static OFF_T active_bytecnt = 0; | |
7f9bf6b7 | 107 | static int first_message = 1; |
720b47f2 | 108 | |
351e23ad WD |
109 | static char int_byte_extra[64] = { |
110 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* (00 - 3F)/4 */ | |
111 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* (40 - 7F)/4 */ | |
112 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* (80 - BF)/4 */ | |
113 | 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 5, 6, /* (C0 - FF)/4 */ | |
482f48cc WD |
114 | }; |
115 | ||
7f9bf6b7 WD |
116 | #define REMOTE_OPTION_ERROR "rsync: on remote machine: -" |
117 | #define REMOTE_OPTION_ERROR2 ": unknown option" | |
118 | ||
29349024 WD |
119 | enum festatus { FES_SUCCESS, FES_REDO, FES_NO_SEND }; |
120 | ||
dde5b772 | 121 | static void readfd(int fd, char *buffer, size_t N); |
8ef246e0 WD |
122 | static void writefd(int fd, const char *buf, size_t len); |
123 | static void writefd_unbuffered(int fd, const char *buf, size_t len); | |
332cf6df | 124 | static void mplex_write(int fd, enum msgcode code, const char *buf, size_t len, int convert); |
ff41a59f | 125 | |
c6816b94 WD |
126 | struct flist_ndx_item { |
127 | struct flist_ndx_item *next; | |
128 | int ndx; | |
d17e1dd2 WD |
129 | }; |
130 | ||
c6816b94 WD |
131 | struct flist_ndx_list { |
132 | struct flist_ndx_item *head, *tail; | |
133 | }; | |
134 | ||
cdf236aa | 135 | static struct flist_ndx_list redo_list, hlink_list; |
d17e1dd2 | 136 | |
08c88178 WD |
137 | struct msg_list_item { |
138 | struct msg_list_item *next; | |
332cf6df | 139 | char convert; |
954bbed8 | 140 | char buf[1]; |
d17e1dd2 WD |
141 | }; |
142 | ||
08c88178 WD |
143 | struct msg_list { |
144 | struct msg_list_item *head, *tail; | |
145 | }; | |
146 | ||
e4c877cf | 147 | static struct msg_list msg_queue; |
d17e1dd2 | 148 | |
c6816b94 | 149 | static void flist_ndx_push(struct flist_ndx_list *lp, int ndx) |
d17e1dd2 | 150 | { |
c6816b94 WD |
151 | struct flist_ndx_item *item; |
152 | ||
153 | if (!(item = new(struct flist_ndx_item))) | |
154 | out_of_memory("flist_ndx_push"); | |
155 | item->next = NULL; | |
156 | item->ndx = ndx; | |
157 | if (lp->tail) | |
158 | lp->tail->next = item; | |
d17e1dd2 | 159 | else |
c6816b94 WD |
160 | lp->head = item; |
161 | lp->tail = item; | |
162 | } | |
163 | ||
164 | static int flist_ndx_pop(struct flist_ndx_list *lp) | |
165 | { | |
166 | struct flist_ndx_item *next; | |
167 | int ndx; | |
168 | ||
169 | if (!lp->head) | |
170 | return -1; | |
171 | ||
172 | ndx = lp->head->ndx; | |
173 | next = lp->head->next; | |
174 | free(lp->head); | |
175 | lp->head = next; | |
176 | if (!next) | |
177 | lp->tail = NULL; | |
178 | ||
179 | return ndx; | |
d17e1dd2 WD |
180 | } |
181 | ||
29349024 WD |
182 | static void got_flist_entry_status(enum festatus status, const char *buf) |
183 | { | |
184 | int ndx = IVAL(buf, 0); | |
e982d591 | 185 | struct file_list *flist = flist_for_ndx(ndx, "got_flist_entry_status"); |
29349024 WD |
186 | |
187 | if (remove_source_files) { | |
188 | active_filecnt--; | |
189 | active_bytecnt -= F_LENGTH(flist->files[ndx - flist->ndx_start]); | |
190 | } | |
191 | ||
192 | if (inc_recurse) | |
193 | flist->in_progress--; | |
194 | ||
195 | switch (status) { | |
196 | case FES_SUCCESS: | |
197 | if (remove_source_files) | |
198 | send_msg(MSG_SUCCESS, buf, 4, 0); | |
199 | if (preserve_hard_links) { | |
200 | struct file_struct *file = flist->files[ndx - flist->ndx_start]; | |
37ce1679 | 201 | if (F_IS_HLINKED(file)) { |
29349024 | 202 | flist_ndx_push(&hlink_list, ndx); |
37ce1679 WD |
203 | flist->in_progress++; |
204 | } | |
29349024 WD |
205 | } |
206 | break; | |
207 | case FES_REDO: | |
208 | if (inc_recurse) | |
209 | flist->to_redo++; | |
210 | flist_ndx_push(&redo_list, ndx); | |
211 | break; | |
212 | case FES_NO_SEND: | |
213 | break; | |
214 | } | |
215 | } | |
216 | ||
8d9dc9f9 AT |
217 | static void check_timeout(void) |
218 | { | |
219 | time_t t; | |
90ba34e2 | 220 | |
9e2409ab | 221 | if (!io_timeout || ignore_timeout) |
d17e1dd2 | 222 | return; |
8d9dc9f9 | 223 | |
3b0a30eb WD |
224 | if (!last_io_in) { |
225 | last_io_in = time(NULL); | |
8d9dc9f9 AT |
226 | return; |
227 | } | |
228 | ||
229 | t = time(NULL); | |
230 | ||
3b0a30eb | 231 | if (t - last_io_in >= io_timeout) { |
0adb99b9 | 232 | if (!am_server && !am_daemon) { |
4ccfd96c | 233 | rprintf(FERROR, "io timeout after %d seconds -- exiting\n", |
3b0a30eb | 234 | (int)(t-last_io_in)); |
0adb99b9 | 235 | } |
65417579 | 236 | exit_cleanup(RERR_TIMEOUT); |
8d9dc9f9 AT |
237 | } |
238 | } | |
239 | ||
1f75bb10 WD |
240 | /* Note the fds used for the main socket (which might really be a pipe |
241 | * for a local transfer, but we can ignore that). */ | |
242 | void io_set_sock_fds(int f_in, int f_out) | |
243 | { | |
244 | sock_f_in = f_in; | |
245 | sock_f_out = f_out; | |
246 | } | |
247 | ||
3b0a30eb WD |
248 | void set_io_timeout(int secs) |
249 | { | |
250 | io_timeout = secs; | |
251 | ||
252 | if (!io_timeout || io_timeout > SELECT_TIMEOUT) | |
253 | select_timeout = SELECT_TIMEOUT; | |
254 | else | |
255 | select_timeout = io_timeout; | |
256 | ||
257 | allowed_lull = read_batch ? 0 : (io_timeout + 1) / 2; | |
258 | } | |
259 | ||
98f8c9a5 WD |
260 | /* Setup the fd used to receive MSG_* messages. Only needed during the |
261 | * early stages of being a local sender (up through the sending of the | |
262 | * file list) or when we're the generator (to fetch the messages from | |
263 | * the receiver). */ | |
d17e1dd2 WD |
264 | void set_msg_fd_in(int fd) |
265 | { | |
266 | msg_fd_in = fd; | |
267 | } | |
268 | ||
98f8c9a5 WD |
269 | /* Setup the fd used to send our MSG_* messages. Only needed when |
270 | * we're the receiver (to send our messages to the generator). */ | |
d17e1dd2 WD |
271 | void set_msg_fd_out(int fd) |
272 | { | |
273 | msg_fd_out = fd; | |
274 | set_nonblocking(msg_fd_out); | |
275 | } | |
276 | ||
277 | /* Add a message to the pending MSG_* list. */ | |
332cf6df | 278 | static void msg_list_add(struct msg_list *lst, int code, const char *buf, int len, int convert) |
554e0a8d | 279 | { |
954bbed8 WD |
280 | struct msg_list_item *m; |
281 | int sz = len + 4 + sizeof m[0] - 1; | |
d17e1dd2 | 282 | |
954bbed8 | 283 | if (!(m = (struct msg_list_item *)new_array(char, sz))) |
c6816b94 | 284 | out_of_memory("msg_list_add"); |
954bbed8 | 285 | m->next = NULL; |
332cf6df | 286 | m->convert = convert; |
954bbed8 WD |
287 | SIVAL(m->buf, 0, ((code+MPLEX_BASE)<<24) | len); |
288 | memcpy(m->buf + 4, buf, len); | |
289 | if (lst->tail) | |
290 | lst->tail->next = m; | |
d17e1dd2 | 291 | else |
954bbed8 WD |
292 | lst->head = m; |
293 | lst->tail = m; | |
554e0a8d AT |
294 | } |
295 | ||
0b789446 WD |
296 | static inline int flush_a_msg(int fd) |
297 | { | |
298 | struct msg_list_item *m = msg_queue.head; | |
299 | int len = IVAL(m->buf, 0) & 0xFFFFFF; | |
300 | int tag = *((uchar*)m->buf+3) - MPLEX_BASE; | |
301 | ||
302 | if (!(msg_queue.head = m->next)) | |
303 | msg_queue.tail = NULL; | |
304 | ||
305 | defer_forwarding_messages++; | |
306 | mplex_write(fd, tag, m->buf + 4, len, m->convert); | |
307 | defer_forwarding_messages--; | |
308 | ||
309 | free(m); | |
310 | ||
311 | return len; | |
312 | } | |
313 | ||
e4c877cf | 314 | static void msg_flush(void) |
3be97bf9 | 315 | { |
e4c877cf | 316 | if (am_generator) { |
0b789446 WD |
317 | while (msg_queue.head && io_multiplexing_out) |
318 | stats.total_written += flush_a_msg(sock_f_out) + 4; | |
e4c877cf | 319 | } else { |
0b789446 WD |
320 | while (msg_queue.head) |
321 | (void)flush_a_msg(msg_fd_out); | |
3be97bf9 WD |
322 | } |
323 | } | |
324 | ||
7f9bf6b7 WD |
325 | static void check_for_d_option_error(const char *msg) |
326 | { | |
327 | static char rsync263_opts[] = "BCDHIKLPRSTWabceghlnopqrtuvxz"; | |
328 | char *colon; | |
329 | int saw_d = 0; | |
330 | ||
331 | if (*msg != 'r' | |
332 | || strncmp(msg, REMOTE_OPTION_ERROR, sizeof REMOTE_OPTION_ERROR - 1) != 0) | |
333 | return; | |
334 | ||
335 | msg += sizeof REMOTE_OPTION_ERROR - 1; | |
336 | if (*msg == '-' || (colon = strchr(msg, ':')) == NULL | |
337 | || strncmp(colon, REMOTE_OPTION_ERROR2, sizeof REMOTE_OPTION_ERROR2 - 1) != 0) | |
338 | return; | |
339 | ||
340 | for ( ; *msg != ':'; msg++) { | |
341 | if (*msg == 'd') | |
342 | saw_d = 1; | |
343 | else if (*msg == 'e') | |
344 | break; | |
345 | else if (strchr(rsync263_opts, *msg) == NULL) | |
346 | return; | |
347 | } | |
348 | ||
349 | if (saw_d) { | |
350 | rprintf(FWARNING, | |
73cb6738 | 351 | "*** Try using \"--old-d\" if remote rsync is <= 2.6.3 ***\n"); |
7f9bf6b7 WD |
352 | } |
353 | } | |
354 | ||
98f8c9a5 WD |
355 | /* Read a message from the MSG_* fd and handle it. This is called either |
356 | * during the early stages of being a local sender (up through the sending | |
357 | * of the file list) or when we're the generator (to fetch the messages | |
358 | * from the receiver). */ | |
d17e1dd2 | 359 | static void read_msg_fd(void) |
554e0a8d | 360 | { |
f9c6b3e7 | 361 | char buf[2048]; |
06ce139f | 362 | size_t n; |
8ef246e0 | 363 | struct file_list *flist; |
d17e1dd2 | 364 | int fd = msg_fd_in; |
ff41a59f AT |
365 | int tag, len; |
366 | ||
00bdf899 | 367 | /* Temporarily disable msg_fd_in. This is needed to avoid looping back |
af436313 | 368 | * to this routine from writefd_unbuffered(). */ |
3be97bf9 | 369 | no_flush++; |
d17e1dd2 | 370 | msg_fd_in = -1; |
be21e29c | 371 | defer_forwarding_messages++; |
554e0a8d | 372 | |
dde5b772 | 373 | readfd(fd, buf, 4); |
ff41a59f AT |
374 | tag = IVAL(buf, 0); |
375 | ||
376 | len = tag & 0xFFFFFF; | |
d17e1dd2 | 377 | tag = (tag >> 24) - MPLEX_BASE; |
ff41a59f | 378 | |
d17e1dd2 WD |
379 | switch (tag) { |
380 | case MSG_DONE: | |
cc7b86bf | 381 | if (len < 0 || len > 1 || !am_generator) { |
8ef246e0 WD |
382 | invalid_msg: |
383 | rprintf(FERROR, "invalid message %d:%d [%s%s]\n", | |
384 | tag, len, who_am_i(), | |
3ea6e0e7 | 385 | inc_recurse ? "/inc" : ""); |
d17e1dd2 | 386 | exit_cleanup(RERR_STREAMIO); |
13c7bcbb | 387 | } |
cc7b86bf WD |
388 | if (len) { |
389 | readfd(fd, buf, len); | |
351e23ad | 390 | stats.total_read = read_varlong(fd, 3); |
cc7b86bf | 391 | } |
04c722d5 | 392 | msgdone_cnt++; |
d17e1dd2 WD |
393 | break; |
394 | case MSG_REDO: | |
8ef246e0 WD |
395 | if (len != 4 || !am_generator) |
396 | goto invalid_msg; | |
dde5b772 | 397 | readfd(fd, buf, 4); |
29349024 | 398 | got_flist_entry_status(FES_REDO, buf); |
8ef246e0 WD |
399 | break; |
400 | case MSG_FLIST: | |
3ea6e0e7 | 401 | if (len != 4 || !am_generator || !inc_recurse) |
8ef246e0 | 402 | goto invalid_msg; |
dde5b772 | 403 | readfd(fd, buf, 4); |
8ef246e0 WD |
404 | /* Read extra file list from receiver. */ |
405 | assert(iobuf_in != NULL); | |
406 | assert(iobuf_f_in == fd); | |
951e826b | 407 | if (DEBUG_GTE(FLIST, 2)) { |
1faa1a6d WD |
408 | rprintf(FINFO, "[%s] receiving flist for dir %d\n", |
409 | who_am_i(), IVAL(buf,0)); | |
410 | } | |
8ef246e0 WD |
411 | flist = recv_file_list(fd); |
412 | flist->parent_ndx = IVAL(buf,0); | |
da131912 WD |
413 | #ifdef SUPPORT_HARD_LINKS |
414 | if (preserve_hard_links) | |
415 | match_hard_links(flist); | |
416 | #endif | |
8ef246e0 WD |
417 | break; |
418 | case MSG_FLIST_EOF: | |
3ea6e0e7 | 419 | if (len != 0 || !am_generator || !inc_recurse) |
8ef246e0 WD |
420 | goto invalid_msg; |
421 | flist_eof = 1; | |
d17e1dd2 | 422 | break; |
e5f35681 WD |
423 | case MSG_IO_ERROR: |
424 | if (len != 4) | |
425 | goto invalid_msg; | |
426 | readfd(fd, buf, len); | |
427 | io_error |= IVAL(buf, 0); | |
428 | break; | |
0d67e00a | 429 | case MSG_DELETED: |
8ef246e0 WD |
430 | if (len >= (int)sizeof buf || !am_generator) |
431 | goto invalid_msg; | |
dde5b772 | 432 | readfd(fd, buf, len); |
332cf6df | 433 | send_msg(MSG_DELETED, buf, len, 1); |
0d67e00a | 434 | break; |
9981c27e | 435 | case MSG_SUCCESS: |
8ef246e0 WD |
436 | if (len != 4 || !am_generator) |
437 | goto invalid_msg; | |
29349024 WD |
438 | readfd(fd, buf, 4); |
439 | got_flist_entry_status(FES_SUCCESS, buf); | |
8ef246e0 WD |
440 | break; |
441 | case MSG_NO_SEND: | |
442 | if (len != 4 || !am_generator) | |
443 | goto invalid_msg; | |
29349024 WD |
444 | readfd(fd, buf, 4); |
445 | got_flist_entry_status(FES_NO_SEND, buf); | |
9981c27e | 446 | break; |
3f0211b6 | 447 | case MSG_ERROR_SOCKET: |
7c7462cd | 448 | case MSG_ERROR_UTF8: |
64119c79 | 449 | case MSG_CLIENT: |
8ef246e0 WD |
450 | if (!am_generator) |
451 | goto invalid_msg; | |
3f0211b6 | 452 | if (tag == MSG_ERROR_SOCKET) |
8ef246e0 | 453 | io_end_multiplex_out(); |
72f2d1b3 | 454 | /* FALL THROUGH */ |
d17e1dd2 WD |
455 | case MSG_INFO: |
456 | case MSG_ERROR: | |
3f0211b6 WD |
457 | case MSG_ERROR_XFER: |
458 | case MSG_WARNING: | |
d17e1dd2 WD |
459 | case MSG_LOG: |
460 | while (len) { | |
461 | n = len; | |
462 | if (n >= sizeof buf) | |
463 | n = sizeof buf - 1; | |
dde5b772 | 464 | readfd(fd, buf, n); |
332cf6df | 465 | rwrite((enum logcode)tag, buf, n, !am_generator); |
d17e1dd2 WD |
466 | len -= n; |
467 | } | |
468 | break; | |
469 | default: | |
f8b9da1a WD |
470 | rprintf(FERROR, "unknown message %d:%d [%s]\n", |
471 | tag, len, who_am_i()); | |
d17e1dd2 WD |
472 | exit_cleanup(RERR_STREAMIO); |
473 | } | |
474 | ||
3be97bf9 | 475 | no_flush--; |
d17e1dd2 | 476 | msg_fd_in = fd; |
17a4977b | 477 | if (!--defer_forwarding_messages && !no_flush) |
e4c877cf | 478 | msg_flush(); |
d17e1dd2 WD |
479 | } |
480 | ||
d6081c82 | 481 | /* This is used by the generator to limit how many file transfers can |
47c11975 | 482 | * be active at once when --remove-source-files is specified. Without |
d6081c82 WD |
483 | * this, sender-side deletions were mostly happening at the end. */ |
484 | void increment_active_files(int ndx, int itemizing, enum logcode code) | |
485 | { | |
486 | /* TODO: tune these limits? */ | |
5b986297 | 487 | while (active_filecnt >= (active_bytecnt >= 128*1024 ? 10 : 50)) { |
04c722d5 WD |
488 | check_for_finished_files(itemizing, code, 0); |
489 | if (iobuf_out_cnt) | |
490 | io_flush(NORMAL_FLUSH); | |
491 | else | |
492 | read_msg_fd(); | |
d6081c82 WD |
493 | } |
494 | ||
495 | active_filecnt++; | |
121bfb2b | 496 | active_bytecnt += F_LENGTH(cur_flist->files[ndx - cur_flist->ndx_start]); |
d6081c82 WD |
497 | } |
498 | ||
3be97bf9 | 499 | /* Write an message to a multiplexed stream. If this fails, rsync exits. */ |
332cf6df | 500 | static void mplex_write(int fd, enum msgcode code, const char *buf, size_t len, int convert) |
d17e1dd2 | 501 | { |
332cf6df | 502 | char buffer[BIGPATHBUFLEN]; /* Oversized for use by iconv code. */ |
3be97bf9 | 503 | size_t n = len; |
d17e1dd2 | 504 | |
332cf6df | 505 | #ifdef ICONV_OPTION |
ee6e80c7 WD |
506 | /* We need to convert buf before doing anything else so that we |
507 | * can include the (converted) byte length in the message header. */ | |
508 | if (convert && ic_send != (iconv_t)-1) { | |
509 | xbuf outbuf, inbuf; | |
510 | ||
511 | INIT_XBUF(outbuf, buffer + 4, 0, sizeof buffer - 4); | |
bb640d32 | 512 | INIT_XBUF(inbuf, (char*)buf, len, (size_t)-1); |
332cf6df | 513 | |
ee6e80c7 WD |
514 | iconvbufs(ic_send, &inbuf, &outbuf, |
515 | ICB_INCLUDE_BAD | ICB_INCLUDE_INCOMPLETE); | |
516 | if (inbuf.len > 0) { | |
517 | rprintf(FERROR, "overflowed conversion buffer in mplex_write"); | |
518 | exit_cleanup(RERR_UNSUPPORTED); | |
519 | } | |
520 | ||
521 | n = len = outbuf.len; | |
522 | } else | |
523 | #endif | |
524 | if (n > 1024 - 4) /* BIGPATHBUFLEN can handle 1024 bytes */ | |
525 | n = 0; /* We'd rather do 2 writes than too much memcpy(). */ | |
3be97bf9 WD |
526 | else |
527 | memcpy(buffer + 4, buf, n); | |
528 | ||
ee6e80c7 WD |
529 | SIVAL(buffer, 0, ((MPLEX_BASE + (int)code)<<24) + len); |
530 | ||
0b789446 | 531 | keep_defer_forwarding++; /* defer_forwarding_messages++ on return */ |
3be97bf9 | 532 | writefd_unbuffered(fd, buffer, n+4); |
0b789446 | 533 | keep_defer_forwarding--; |
3be97bf9 | 534 | |
ee6e80c7 WD |
535 | if (len > n) |
536 | writefd_unbuffered(fd, buf+n, len-n); | |
17a4977b WD |
537 | |
538 | if (!--defer_forwarding_messages && !no_flush) | |
539 | msg_flush(); | |
d17e1dd2 WD |
540 | } |
541 | ||
332cf6df | 542 | int send_msg(enum msgcode code, const char *buf, int len, int convert) |
37f35d89 WD |
543 | { |
544 | if (msg_fd_out < 0) { | |
12ccc73a | 545 | if (!defer_forwarding_messages) |
332cf6df | 546 | return io_multiplex_write(code, buf, len, convert); |
12ccc73a WD |
547 | if (!io_multiplexing_out) |
548 | return 0; | |
332cf6df | 549 | msg_list_add(&msg_queue, code, buf, len, convert); |
12ccc73a | 550 | return 1; |
37f35d89 | 551 | } |
e4c877cf | 552 | if (flist_forward_from >= 0) |
332cf6df | 553 | msg_list_add(&msg_queue, code, buf, len, convert); |
e4c877cf | 554 | else |
332cf6df | 555 | mplex_write(msg_fd_out, code, buf, len, convert); |
12ccc73a | 556 | return 1; |
37f35d89 WD |
557 | } |
558 | ||
155d9206 WD |
559 | void send_msg_int(enum msgcode code, int num) |
560 | { | |
561 | char numbuf[4]; | |
562 | SIVAL(numbuf, 0, num); | |
332cf6df | 563 | send_msg(code, numbuf, 4, 0); |
155d9206 WD |
564 | } |
565 | ||
8ef246e0 | 566 | void wait_for_receiver(void) |
d17e1dd2 | 567 | { |
0b789446 WD |
568 | if (io_flush(FULL_FLUSH)) |
569 | return; | |
570 | read_msg_fd(); | |
8ef246e0 | 571 | } |
554e0a8d | 572 | |
8ef246e0 WD |
573 | int get_redo_num(void) |
574 | { | |
c6816b94 | 575 | return flist_ndx_pop(&redo_list); |
554e0a8d AT |
576 | } |
577 | ||
cdf236aa WD |
578 | int get_hlink_num(void) |
579 | { | |
580 | return flist_ndx_pop(&hlink_list); | |
581 | } | |
582 | ||
56014c8c WD |
583 | /** |
584 | * When we're the receiver and we have a local --files-from list of names | |
585 | * that needs to be sent over the socket to the sender, we have to do two | |
586 | * things at the same time: send the sender a list of what files we're | |
587 | * processing and read the incoming file+info list from the sender. We do | |
588 | * this by augmenting the read_timeout() function to copy this data. It | |
ba525f77 WD |
589 | * uses ff_buf to read a block of data from f_in (when it is ready, since |
590 | * it might be a pipe) and then blast it out f_out (when it is ready to | |
591 | * receive more data). | |
56014c8c WD |
592 | */ |
593 | void io_set_filesfrom_fds(int f_in, int f_out) | |
594 | { | |
595 | io_filesfrom_f_in = f_in; | |
596 | io_filesfrom_f_out = f_out; | |
ba525f77 WD |
597 | alloc_xbuf(&ff_buf, 2048); |
598 | #ifdef ICONV_OPTION | |
599 | if (protect_args) | |
600 | alloc_xbuf(&iconv_buf, 1024); | |
601 | #endif | |
56014c8c | 602 | } |
720b47f2 | 603 | |
cb2e1f18 WD |
604 | /* It's almost always an error to get an EOF when we're trying to read from the |
605 | * network, because the protocol is (for the most part) self-terminating. | |
880da007 | 606 | * |
cb2e1f18 WD |
607 | * There is one case for the receiver when it is at the end of the transfer |
608 | * (hanging around reading any keep-alive packets that might come its way): if | |
609 | * the sender dies before the generator's kill-signal comes through, we can end | |
610 | * up here needing to loop until the kill-signal arrives. In this situation, | |
611 | * kluge_around_eof will be < 0. | |
612 | * | |
613 | * There is another case for older protocol versions (< 24) where the module | |
614 | * listing was not terminated, so we must ignore an EOF error in that case and | |
615 | * exit. In this situation, kluge_around_eof will be > 0. */ | |
1f75bb10 | 616 | static void whine_about_eof(int fd) |
7a55d06e | 617 | { |
574c2500 | 618 | if (kluge_around_eof && fd == sock_f_in) { |
55bb7fff | 619 | int i; |
574c2500 WD |
620 | if (kluge_around_eof > 0) |
621 | exit_cleanup(0); | |
55bb7fff WD |
622 | /* If we're still here after 10 seconds, exit with an error. */ |
623 | for (i = 10*1000/20; i--; ) | |
574c2500 WD |
624 | msleep(20); |
625 | } | |
3151cbae | 626 | |
00bdf899 | 627 | rprintf(FERROR, RSYNC_NAME ": connection unexpectedly closed " |
6d56efa6 | 628 | "(%s bytes received so far) [%s]\n", |
adc2476f | 629 | big_num(stats.total_read), who_am_i()); |
00bdf899 WD |
630 | |
631 | exit_cleanup(RERR_STREAMIO); | |
7a55d06e | 632 | } |
720b47f2 | 633 | |
880da007 | 634 | /** |
6ed6d7f5 | 635 | * Read from a socket with I/O timeout. return the number of bytes |
c3563c46 MP |
636 | * read. If no bytes can be read then exit, never return a number <= 0. |
637 | * | |
8886f8d0 MP |
638 | * TODO: If the remote shell connection fails, then current versions |
639 | * actually report an "unexpected EOF" error here. Since it's a | |
640 | * fairly common mistake to try to use rsh when ssh is required, we | |
641 | * should trap that: if we fail to read any data at all, we should | |
642 | * give a better explanation. We can tell whether the connection has | |
643 | * started by looking e.g. at whether the remote version is known yet. | |
c3563c46 | 644 | */ |
3151cbae | 645 | static int read_timeout(int fd, char *buf, size_t len) |
8d9dc9f9 | 646 | { |
d8aeda1e | 647 | int n, cnt = 0; |
4c36ddbe | 648 | |
dde5b772 | 649 | io_flush(FULL_FLUSH); |
ea2111d1 | 650 | |
d8aeda1e | 651 | while (cnt == 0) { |
7a55d06e | 652 | /* until we manage to read *something* */ |
56014c8c | 653 | fd_set r_fds, w_fds; |
4c36ddbe | 654 | struct timeval tv; |
1ea087a7 | 655 | int maxfd = fd; |
a57873b7 | 656 | int count; |
4c36ddbe | 657 | |
56014c8c | 658 | FD_ZERO(&r_fds); |
a7026ba9 | 659 | FD_ZERO(&w_fds); |
56014c8c | 660 | FD_SET(fd, &r_fds); |
3309507d | 661 | if (io_filesfrom_f_out >= 0) { |
56014c8c | 662 | int new_fd; |
ba525f77 | 663 | if (ff_buf.len == 0) { |
3309507d | 664 | if (io_filesfrom_f_in >= 0) { |
56014c8c WD |
665 | FD_SET(io_filesfrom_f_in, &r_fds); |
666 | new_fd = io_filesfrom_f_in; | |
667 | } else { | |
668 | io_filesfrom_f_out = -1; | |
669 | new_fd = -1; | |
670 | } | |
671 | } else { | |
56014c8c WD |
672 | FD_SET(io_filesfrom_f_out, &w_fds); |
673 | new_fd = io_filesfrom_f_out; | |
674 | } | |
1ea087a7 WD |
675 | if (new_fd > maxfd) |
676 | maxfd = new_fd; | |
554e0a8d AT |
677 | } |
678 | ||
e626b29e | 679 | tv.tv_sec = select_timeout; |
4c36ddbe AT |
680 | tv.tv_usec = 0; |
681 | ||
554e0a8d AT |
682 | errno = 0; |
683 | ||
a7026ba9 | 684 | count = select(maxfd + 1, &r_fds, &w_fds, NULL, &tv); |
a57873b7 | 685 | |
a57873b7 | 686 | if (count <= 0) { |
2a5df862 WD |
687 | if (errno == EBADF) { |
688 | defer_forwarding_messages = 0; | |
554e0a8d | 689 | exit_cleanup(RERR_SOCKETIO); |
2a5df862 | 690 | } |
bd717af8 | 691 | check_timeout(); |
4c36ddbe AT |
692 | continue; |
693 | } | |
694 | ||
3309507d | 695 | if (io_filesfrom_f_out >= 0) { |
ba525f77 | 696 | if (ff_buf.len) { |
56014c8c WD |
697 | if (FD_ISSET(io_filesfrom_f_out, &w_fds)) { |
698 | int l = write(io_filesfrom_f_out, | |
ba525f77 WD |
699 | ff_buf.buf + ff_buf.pos, |
700 | ff_buf.len); | |
56014c8c | 701 | if (l > 0) { |
ba525f77 WD |
702 | if (!(ff_buf.len -= l)) |
703 | ff_buf.pos = 0; | |
56014c8c | 704 | else |
ba525f77 | 705 | ff_buf.pos += l; |
47cffb77 | 706 | } else if (errno != EINTR) { |
56014c8c WD |
707 | /* XXX should we complain? */ |
708 | io_filesfrom_f_out = -1; | |
709 | } | |
710 | } | |
3309507d | 711 | } else if (io_filesfrom_f_in >= 0) { |
56014c8c | 712 | if (FD_ISSET(io_filesfrom_f_in, &r_fds)) { |
22955408 | 713 | #ifdef ICONV_OPTION |
ba525f77 | 714 | xbuf *ibuf = filesfrom_convert ? &iconv_buf : &ff_buf; |
22955408 WD |
715 | #else |
716 | xbuf *ibuf = &ff_buf; | |
717 | #endif | |
ba525f77 | 718 | int l = read(io_filesfrom_f_in, ibuf->buf, ibuf->size); |
56014c8c | 719 | if (l <= 0) { |
47cffb77 WD |
720 | if (l == 0 || errno != EINTR) { |
721 | /* Send end-of-file marker */ | |
ba525f77 WD |
722 | memcpy(ff_buf.buf, "\0\0", 2); |
723 | ff_buf.len = ff_lastchar? 2 : 1; | |
724 | ff_buf.pos = 0; | |
47cffb77 WD |
725 | io_filesfrom_f_in = -1; |
726 | } | |
56014c8c | 727 | } else { |
22955408 | 728 | #ifdef ICONV_OPTION |
ba525f77 WD |
729 | if (filesfrom_convert) { |
730 | iconv_buf.pos = 0; | |
731 | iconv_buf.len = l; | |
732 | iconvbufs(ic_send, &iconv_buf, &ff_buf, | |
733 | ICB_EXPAND_OUT|ICB_INCLUDE_BAD|ICB_INCLUDE_INCOMPLETE); | |
734 | l = ff_buf.len; | |
735 | } | |
22955408 | 736 | #endif |
56014c8c | 737 | if (!eol_nulls) { |
ba525f77 | 738 | char *s = ff_buf.buf + l; |
56014c8c | 739 | /* Transform CR and/or LF into '\0' */ |
ba525f77 | 740 | while (s-- > ff_buf.buf) { |
56014c8c WD |
741 | if (*s == '\n' || *s == '\r') |
742 | *s = '\0'; | |
743 | } | |
744 | } | |
ba525f77 | 745 | if (!ff_lastchar) { |
56014c8c WD |
746 | /* Last buf ended with a '\0', so don't |
747 | * let this buf start with one. */ | |
ba525f77 WD |
748 | while (l && ff_buf.buf[ff_buf.pos] == '\0') |
749 | ff_buf.pos++, l--; | |
56014c8c WD |
750 | } |
751 | if (!l) | |
ba525f77 | 752 | ff_buf.pos = 0; |
56014c8c | 753 | else { |
ba525f77 | 754 | char *f = ff_buf.buf + ff_buf.pos; |
56014c8c WD |
755 | char *t = f; |
756 | char *eob = f + l; | |
757 | /* Eliminate any multi-'\0' runs. */ | |
758 | while (f != eob) { | |
759 | if (!(*t++ = *f++)) { | |
760 | while (f != eob && !*f) | |
761 | f++, l--; | |
762 | } | |
763 | } | |
ba525f77 | 764 | ff_lastchar = f[-1]; |
56014c8c | 765 | } |
ba525f77 | 766 | ff_buf.len = l; |
56014c8c WD |
767 | } |
768 | } | |
769 | } | |
770 | } | |
771 | ||
f89b9368 WD |
772 | if (!FD_ISSET(fd, &r_fds)) |
773 | continue; | |
554e0a8d | 774 | |
4c36ddbe AT |
775 | n = read(fd, buf, len); |
776 | ||
1ea087a7 WD |
777 | if (n <= 0) { |
778 | if (n == 0) | |
1f75bb10 | 779 | whine_about_eof(fd); /* Doesn't return. */ |
d62bcc17 WD |
780 | if (errno == EINTR || errno == EWOULDBLOCK |
781 | || errno == EAGAIN) | |
7a55d06e | 782 | continue; |
1f75bb10 WD |
783 | |
784 | /* Don't write errors on a dead socket. */ | |
72f2d1b3 | 785 | if (fd == sock_f_in) { |
8ef246e0 | 786 | io_end_multiplex_out(); |
3f0211b6 | 787 | rsyserr(FERROR_SOCKET, errno, "read error"); |
72f2d1b3 WD |
788 | } else |
789 | rsyserr(FERROR, errno, "read error"); | |
1f75bb10 | 790 | exit_cleanup(RERR_STREAMIO); |
8d9dc9f9 | 791 | } |
00bdf899 WD |
792 | |
793 | buf += n; | |
794 | len -= n; | |
d8aeda1e | 795 | cnt += n; |
1f75bb10 | 796 | |
3b0a30eb WD |
797 | if (fd == sock_f_in && io_timeout) |
798 | last_io_in = time(NULL); | |
4c36ddbe | 799 | } |
8d9dc9f9 | 800 | |
d8aeda1e | 801 | return cnt; |
4c36ddbe | 802 | } |
8d9dc9f9 | 803 | |
67b8f3df | 804 | /* Read a line into the "buf" buffer. */ |
ba525f77 | 805 | int read_line(int fd, char *buf, size_t bufsiz, int flags) |
56014c8c | 806 | { |
ba525f77 | 807 | char ch, *s, *eob; |
56014c8c | 808 | int cnt; |
56014c8c | 809 | |
ba525f77 WD |
810 | #ifdef ICONV_OPTION |
811 | if (flags & RL_CONVERT && iconv_buf.size < bufsiz) | |
812 | realloc_xbuf(&iconv_buf, bufsiz + 1024); | |
813 | #endif | |
814 | ||
56014c8c | 815 | start: |
22955408 | 816 | #ifdef ICONV_OPTION |
ba525f77 | 817 | s = flags & RL_CONVERT ? iconv_buf.buf : buf; |
22955408 WD |
818 | #else |
819 | s = buf; | |
820 | #endif | |
ba525f77 | 821 | eob = s + bufsiz - 1; |
56014c8c WD |
822 | while (1) { |
823 | cnt = read(fd, &ch, 1); | |
824 | if (cnt < 0 && (errno == EWOULDBLOCK | |
825 | || errno == EINTR || errno == EAGAIN)) { | |
826 | struct timeval tv; | |
6c850772 WD |
827 | fd_set r_fds, e_fds; |
828 | FD_ZERO(&r_fds); | |
829 | FD_SET(fd, &r_fds); | |
830 | FD_ZERO(&e_fds); | |
831 | FD_SET(fd, &e_fds); | |
e626b29e | 832 | tv.tv_sec = select_timeout; |
56014c8c | 833 | tv.tv_usec = 0; |
6c850772 | 834 | if (!select(fd+1, &r_fds, NULL, &e_fds, &tv)) |
56014c8c | 835 | check_timeout(); |
35c8fd76 WD |
836 | /*if (FD_ISSET(fd, &e_fds)) |
837 | rprintf(FINFO, "select exception on fd %d\n", fd); */ | |
56014c8c WD |
838 | continue; |
839 | } | |
840 | if (cnt != 1) | |
841 | break; | |
ba525f77 | 842 | if (flags & RL_EOL_NULLS ? ch == '\0' : (ch == '\r' || ch == '\n')) { |
67b8f3df | 843 | /* Skip empty lines if dumping comments. */ |
ba525f77 | 844 | if (flags & RL_DUMP_COMMENTS && s == buf) |
56014c8c WD |
845 | continue; |
846 | break; | |
847 | } | |
848 | if (s < eob) | |
849 | *s++ = ch; | |
850 | } | |
851 | *s = '\0'; | |
7a55d06e | 852 | |
ba525f77 | 853 | if (flags & RL_DUMP_COMMENTS && (*buf == '#' || *buf == ';')) |
56014c8c WD |
854 | goto start; |
855 | ||
ba525f77 WD |
856 | #ifdef ICONV_OPTION |
857 | if (flags & RL_CONVERT) { | |
858 | xbuf outbuf; | |
859 | INIT_XBUF(outbuf, buf, 0, bufsiz); | |
860 | iconv_buf.pos = 0; | |
861 | iconv_buf.len = s - iconv_buf.buf; | |
862 | iconvbufs(ic_recv, &iconv_buf, &outbuf, | |
863 | ICB_INCLUDE_BAD | ICB_INCLUDE_INCOMPLETE); | |
864 | outbuf.buf[outbuf.len] = '\0'; | |
865 | return outbuf.len; | |
866 | } | |
867 | #endif | |
868 | ||
67b8f3df WD |
869 | return s - buf; |
870 | } | |
871 | ||
53936ef9 WD |
872 | void read_args(int f_in, char *mod_name, char *buf, size_t bufsiz, int rl_nulls, |
873 | char ***argv_p, int *argc_p, char **request_p) | |
67b8f3df WD |
874 | { |
875 | int maxargs = MAX_ARGS; | |
876 | int dot_pos = 0; | |
877 | int argc = 0; | |
878 | char **argv, *p; | |
22955408 WD |
879 | int rl_flags = (rl_nulls ? RL_EOL_NULLS : 0); |
880 | ||
881 | #ifdef ICONV_OPTION | |
882 | rl_flags |= (protect_args && ic_recv != (iconv_t)-1 ? RL_CONVERT : 0); | |
883 | #endif | |
67b8f3df WD |
884 | |
885 | if (!(argv = new_array(char *, maxargs))) | |
886 | out_of_memory("read_args"); | |
53936ef9 | 887 | if (mod_name && !protect_args) |
67b8f3df WD |
888 | argv[argc++] = "rsyncd"; |
889 | ||
890 | while (1) { | |
ba525f77 | 891 | if (read_line(f_in, buf, bufsiz, rl_flags) == 0) |
67b8f3df WD |
892 | break; |
893 | ||
53936ef9 | 894 | if (argc == maxargs-1) { |
67b8f3df WD |
895 | maxargs += MAX_ARGS; |
896 | if (!(argv = realloc_array(argv, char *, maxargs))) | |
897 | out_of_memory("read_args"); | |
898 | } | |
899 | ||
900 | if (dot_pos) { | |
901 | if (request_p) { | |
902 | *request_p = strdup(buf); | |
903 | request_p = NULL; | |
904 | } | |
905 | if (mod_name) | |
906 | glob_expand_module(mod_name, buf, &argv, &argc, &maxargs); | |
907 | else | |
908 | glob_expand(buf, &argv, &argc, &maxargs); | |
909 | } else { | |
910 | if (!(p = strdup(buf))) | |
911 | out_of_memory("read_args"); | |
912 | argv[argc++] = p; | |
913 | if (*p == '.' && p[1] == '\0') | |
914 | dot_pos = argc; | |
915 | } | |
916 | } | |
53936ef9 | 917 | argv[argc] = NULL; |
67b8f3df | 918 | |
987a5467 WD |
919 | glob_expand(NULL, NULL, NULL, NULL); |
920 | ||
67b8f3df WD |
921 | *argc_p = argc; |
922 | *argv_p = argv; | |
56014c8c | 923 | } |
7a55d06e | 924 | |
8ef246e0 | 925 | int io_start_buffering_out(int f_out) |
1f75bb10 | 926 | { |
8ef246e0 WD |
927 | if (iobuf_out) { |
928 | assert(f_out == iobuf_f_out); | |
929 | return 0; | |
930 | } | |
1f75bb10 WD |
931 | if (!(iobuf_out = new_array(char, IO_BUFFER_SIZE))) |
932 | out_of_memory("io_start_buffering_out"); | |
933 | iobuf_out_cnt = 0; | |
8ef246e0 WD |
934 | iobuf_f_out = f_out; |
935 | return 1; | |
1f75bb10 WD |
936 | } |
937 | ||
8ef246e0 | 938 | int io_start_buffering_in(int f_in) |
1f75bb10 | 939 | { |
8ef246e0 WD |
940 | if (iobuf_in) { |
941 | assert(f_in == iobuf_f_in); | |
942 | return 0; | |
943 | } | |
1f75bb10 WD |
944 | iobuf_in_siz = 2 * IO_BUFFER_SIZE; |
945 | if (!(iobuf_in = new_array(char, iobuf_in_siz))) | |
946 | out_of_memory("io_start_buffering_in"); | |
8ef246e0 WD |
947 | iobuf_f_in = f_in; |
948 | return 1; | |
1f75bb10 WD |
949 | } |
950 | ||
8ef246e0 | 951 | void io_end_buffering_in(void) |
1f75bb10 | 952 | { |
8ef246e0 WD |
953 | if (!iobuf_in) |
954 | return; | |
955 | free(iobuf_in); | |
956 | iobuf_in = NULL; | |
957 | iobuf_in_ndx = 0; | |
958 | iobuf_in_remaining = 0; | |
959 | iobuf_f_in = -1; | |
960 | } | |
961 | ||
962 | void io_end_buffering_out(void) | |
963 | { | |
964 | if (!iobuf_out) | |
965 | return; | |
966 | io_flush(FULL_FLUSH); | |
967 | free(iobuf_out); | |
968 | iobuf_out = NULL; | |
969 | iobuf_f_out = -1; | |
1f75bb10 WD |
970 | } |
971 | ||
be91bd81 | 972 | void maybe_flush_socket(int important) |
626bec8e | 973 | { |
be91bd81 WD |
974 | if (iobuf_out && iobuf_out_cnt |
975 | && (important || time(NULL) - last_io_out >= 5)) | |
626bec8e WD |
976 | io_flush(NORMAL_FLUSH); |
977 | } | |
978 | ||
cdf236aa | 979 | void maybe_send_keepalive(void) |
9e2409ab | 980 | { |
3b0a30eb | 981 | if (time(NULL) - last_io_out >= allowed_lull) { |
9e2409ab | 982 | if (!iobuf_out || !iobuf_out_cnt) { |
3221f451 WD |
983 | if (protocol_version < 29) |
984 | return; /* there's nothing we can do */ | |
8ef246e0 | 985 | if (protocol_version >= 30) |
332cf6df | 986 | send_msg(MSG_NOOP, "", 0, 0); |
8ef246e0 | 987 | else { |
9decb4d2 | 988 | write_int(sock_f_out, cur_flist->used); |
8ef246e0 WD |
989 | write_shortint(sock_f_out, ITEM_IS_NEW); |
990 | } | |
9e2409ab WD |
991 | } |
992 | if (iobuf_out) | |
993 | io_flush(NORMAL_FLUSH); | |
994 | } | |
995 | } | |
996 | ||
8ef246e0 WD |
997 | void start_flist_forward(int f_in) |
998 | { | |
999 | assert(iobuf_out != NULL); | |
1000 | assert(iobuf_f_out == msg_fd_out); | |
1001 | flist_forward_from = f_in; | |
1002 | } | |
1003 | ||
1004 | void stop_flist_forward() | |
1005 | { | |
8ef246e0 | 1006 | flist_forward_from = -1; |
dde5b772 | 1007 | io_flush(FULL_FLUSH); |
8ef246e0 WD |
1008 | } |
1009 | ||
880da007 MP |
1010 | /** |
1011 | * Continue trying to read len bytes - don't return until len has been | |
1012 | * read. | |
1013 | **/ | |
3151cbae | 1014 | static void read_loop(int fd, char *buf, size_t len) |
4c36ddbe AT |
1015 | { |
1016 | while (len) { | |
1017 | int n = read_timeout(fd, buf, len); | |
1018 | ||
1019 | buf += n; | |
1020 | len -= n; | |
8d9dc9f9 AT |
1021 | } |
1022 | } | |
1023 | ||
7a55d06e MP |
1024 | /** |
1025 | * Read from the file descriptor handling multiplexing - return number | |
1026 | * of bytes read. | |
d62bcc17 WD |
1027 | * |
1028 | * Never returns <= 0. | |
7a55d06e | 1029 | */ |
c399d22a | 1030 | static int readfd_unbuffered(int fd, char *buf, size_t len) |
8d9dc9f9 | 1031 | { |
f2a4853c | 1032 | size_t msg_bytes; |
d8aeda1e | 1033 | int tag, cnt = 0; |
33544bf4 | 1034 | char line[BIGPATHBUFLEN]; |
8d9dc9f9 | 1035 | |
8ef246e0 | 1036 | if (!iobuf_in || fd != iobuf_f_in) |
4c36ddbe | 1037 | return read_timeout(fd, buf, len); |
8d9dc9f9 | 1038 | |
8ef246e0 WD |
1039 | if (!io_multiplexing_in && iobuf_in_remaining == 0) { |
1040 | iobuf_in_remaining = read_timeout(fd, iobuf_in, iobuf_in_siz); | |
1f75bb10 | 1041 | iobuf_in_ndx = 0; |
76c21947 WD |
1042 | } |
1043 | ||
d8aeda1e | 1044 | while (cnt == 0) { |
8ef246e0 WD |
1045 | if (iobuf_in_remaining) { |
1046 | len = MIN(len, iobuf_in_remaining); | |
1f75bb10 WD |
1047 | memcpy(buf, iobuf_in + iobuf_in_ndx, len); |
1048 | iobuf_in_ndx += len; | |
8ef246e0 | 1049 | iobuf_in_remaining -= len; |
d8aeda1e | 1050 | cnt = len; |
76c21947 | 1051 | break; |
8d9dc9f9 AT |
1052 | } |
1053 | ||
909ce14f | 1054 | read_loop(fd, line, 4); |
ff41a59f | 1055 | tag = IVAL(line, 0); |
679e7657 | 1056 | |
f2a4853c | 1057 | msg_bytes = tag & 0xFFFFFF; |
d17e1dd2 | 1058 | tag = (tag >> 24) - MPLEX_BASE; |
8d9dc9f9 | 1059 | |
d17e1dd2 WD |
1060 | switch (tag) { |
1061 | case MSG_DATA: | |
f2a4853c | 1062 | if (msg_bytes > iobuf_in_siz) { |
1f75bb10 | 1063 | if (!(iobuf_in = realloc_array(iobuf_in, char, |
f2a4853c | 1064 | msg_bytes))) |
c399d22a | 1065 | out_of_memory("readfd_unbuffered"); |
f2a4853c | 1066 | iobuf_in_siz = msg_bytes; |
76c21947 | 1067 | } |
f2a4853c | 1068 | read_loop(fd, iobuf_in, msg_bytes); |
8ef246e0 | 1069 | iobuf_in_remaining = msg_bytes; |
1f75bb10 | 1070 | iobuf_in_ndx = 0; |
d17e1dd2 | 1071 | break; |
8ef246e0 WD |
1072 | case MSG_NOOP: |
1073 | if (am_sender) | |
1074 | maybe_send_keepalive(); | |
1075 | break; | |
1076 | case MSG_IO_ERROR: | |
1077 | if (msg_bytes != 4) | |
1078 | goto invalid_msg; | |
1079 | read_loop(fd, line, msg_bytes); | |
e5f35681 | 1080 | send_msg_int(MSG_IO_ERROR, IVAL(line, 0)); |
8ef246e0 WD |
1081 | io_error |= IVAL(line, 0); |
1082 | break; | |
0d67e00a | 1083 | case MSG_DELETED: |
f2a4853c WD |
1084 | if (msg_bytes >= sizeof line) |
1085 | goto overflow; | |
332cf6df WD |
1086 | #ifdef ICONV_OPTION |
1087 | if (ic_recv != (iconv_t)-1) { | |
ba525f77 WD |
1088 | xbuf outbuf, inbuf; |
1089 | char ibuf[512]; | |
332cf6df | 1090 | int add_null = 0; |
ba525f77 WD |
1091 | |
1092 | INIT_CONST_XBUF(outbuf, line); | |
bb640d32 | 1093 | INIT_XBUF(inbuf, ibuf, 0, (size_t)-1); |
ba525f77 | 1094 | |
332cf6df | 1095 | while (msg_bytes) { |
ba525f77 WD |
1096 | inbuf.len = msg_bytes > sizeof ibuf |
1097 | ? sizeof ibuf : msg_bytes; | |
1098 | read_loop(fd, inbuf.buf, inbuf.len); | |
1099 | if (!(msg_bytes -= inbuf.len) | |
1100 | && !ibuf[inbuf.len-1]) | |
1101 | inbuf.len--, add_null = 1; | |
1102 | if (iconvbufs(ic_send, &inbuf, &outbuf, | |
1103 | ICB_INCLUDE_BAD | ICB_INCLUDE_INCOMPLETE) < 0) | |
1104 | goto overflow; | |
ba525f77 WD |
1105 | } |
1106 | if (add_null) { | |
1107 | if (outbuf.len == outbuf.size) | |
1108 | goto overflow; | |
1109 | outbuf.buf[outbuf.len++] = '\0'; | |
332cf6df | 1110 | } |
ba525f77 | 1111 | msg_bytes = outbuf.len; |
332cf6df WD |
1112 | } else |
1113 | #endif | |
1114 | read_loop(fd, line, msg_bytes); | |
0d67e00a | 1115 | /* A directory name was sent with the trailing null */ |
f2a4853c | 1116 | if (msg_bytes > 0 && !line[msg_bytes-1]) |
0d67e00a | 1117 | log_delete(line, S_IFDIR); |
12bda6f7 WD |
1118 | else { |
1119 | line[msg_bytes] = '\0'; | |
0d67e00a | 1120 | log_delete(line, S_IFREG); |
12bda6f7 | 1121 | } |
0d67e00a | 1122 | break; |
9981c27e | 1123 | case MSG_SUCCESS: |
f2a4853c | 1124 | if (msg_bytes != 4) { |
8ef246e0 | 1125 | invalid_msg: |
cdf236aa | 1126 | rprintf(FERROR, "invalid multi-message %d:%ld [%s]\n", |
f2a4853c | 1127 | tag, (long)msg_bytes, who_am_i()); |
9981c27e WD |
1128 | exit_cleanup(RERR_STREAMIO); |
1129 | } | |
f2a4853c | 1130 | read_loop(fd, line, msg_bytes); |
9981c27e | 1131 | successful_send(IVAL(line, 0)); |
9981c27e | 1132 | break; |
8ef246e0 WD |
1133 | case MSG_NO_SEND: |
1134 | if (msg_bytes != 4) | |
1135 | goto invalid_msg; | |
1136 | read_loop(fd, line, msg_bytes); | |
1137 | send_msg_int(MSG_NO_SEND, IVAL(line, 0)); | |
1138 | break; | |
d17e1dd2 WD |
1139 | case MSG_INFO: |
1140 | case MSG_ERROR: | |
3f0211b6 WD |
1141 | case MSG_ERROR_XFER: |
1142 | case MSG_WARNING: | |
f2a4853c WD |
1143 | if (msg_bytes >= sizeof line) { |
1144 | overflow: | |
bd9fca47 | 1145 | rprintf(FERROR, |
cdf236aa | 1146 | "multiplexing overflow %d:%ld [%s]\n", |
f2a4853c | 1147 | tag, (long)msg_bytes, who_am_i()); |
d17e1dd2 WD |
1148 | exit_cleanup(RERR_STREAMIO); |
1149 | } | |
f2a4853c | 1150 | read_loop(fd, line, msg_bytes); |
332cf6df | 1151 | rwrite((enum logcode)tag, line, msg_bytes, 1); |
7f9bf6b7 WD |
1152 | if (first_message) { |
1153 | if (list_only && !am_sender && tag == 1) { | |
1154 | line[msg_bytes] = '\0'; | |
1155 | check_for_d_option_error(line); | |
1156 | } | |
1157 | first_message = 0; | |
1158 | } | |
d17e1dd2 WD |
1159 | break; |
1160 | default: | |
cdf236aa WD |
1161 | rprintf(FERROR, "unexpected tag %d [%s]\n", |
1162 | tag, who_am_i()); | |
65417579 | 1163 | exit_cleanup(RERR_STREAMIO); |
8d9dc9f9 | 1164 | } |
8d9dc9f9 AT |
1165 | } |
1166 | ||
8ef246e0 | 1167 | if (iobuf_in_remaining == 0) |
d17e1dd2 | 1168 | io_flush(NORMAL_FLUSH); |
76c21947 | 1169 | |
d8aeda1e | 1170 | return cnt; |
8d9dc9f9 AT |
1171 | } |
1172 | ||
dde5b772 WD |
1173 | /* Do a buffered read from fd. Don't return until all N bytes have |
1174 | * been read. If all N can't be read then exit with an error. */ | |
3151cbae | 1175 | static void readfd(int fd, char *buffer, size_t N) |
720b47f2 | 1176 | { |
d8aeda1e | 1177 | int cnt; |
d62bcc17 | 1178 | size_t total = 0; |
3151cbae | 1179 | |
6ba9279f | 1180 | while (total < N) { |
d8aeda1e WD |
1181 | cnt = readfd_unbuffered(fd, buffer + total, N-total); |
1182 | total += cnt; | |
7f28dbee | 1183 | } |
1b7c47cb | 1184 | |
b9f592fb WD |
1185 | if (fd == write_batch_monitor_in) { |
1186 | if ((size_t)write(batch_fd, buffer, total) != total) | |
1187 | exit_cleanup(RERR_FILEIO); | |
1188 | } | |
1f75bb10 | 1189 | |
8ef246e0 WD |
1190 | if (fd == flist_forward_from) |
1191 | writefd(iobuf_f_out, buffer, total); | |
1192 | ||
1f75bb10 WD |
1193 | if (fd == sock_f_in) |
1194 | stats.total_read += total; | |
720b47f2 AT |
1195 | } |
1196 | ||
3a993aa4 | 1197 | unsigned short read_shortint(int f) |
9361f839 | 1198 | { |
482f48cc WD |
1199 | char b[2]; |
1200 | readfd(f, b, 2); | |
1201 | return (UVAL(b, 1) << 8) + UVAL(b, 0); | |
9361f839 WD |
1202 | } |
1203 | ||
b7922338 | 1204 | int32 read_int(int f) |
720b47f2 | 1205 | { |
4c36ddbe | 1206 | char b[4]; |
d8aeda1e | 1207 | int32 num; |
d730b113 | 1208 | |
482f48cc WD |
1209 | readfd(f, b, 4); |
1210 | num = IVAL(b, 0); | |
1211 | #if SIZEOF_INT32 > 4 | |
1212 | if (num & (int32)0x80000000) | |
1213 | num |= ~(int32)0xffffffff; | |
1214 | #endif | |
d8aeda1e | 1215 | return num; |
720b47f2 AT |
1216 | } |
1217 | ||
351e23ad | 1218 | int32 read_varint(int f) |
3a6a366f | 1219 | { |
351e23ad WD |
1220 | union { |
1221 | char b[5]; | |
1222 | int32 x; | |
1223 | } u; | |
1224 | uchar ch; | |
1225 | int extra; | |
1226 | ||
1227 | u.x = 0; | |
1228 | readfd(f, (char*)&ch, 1); | |
1229 | extra = int_byte_extra[ch / 4]; | |
1230 | if (extra) { | |
1231 | uchar bit = ((uchar)1<<(8-extra)); | |
1232 | if (extra >= (int)sizeof u.b) { | |
1233 | rprintf(FERROR, "Overflow in read_varint()\n"); | |
1234 | exit_cleanup(RERR_STREAMIO); | |
1235 | } | |
1236 | readfd(f, u.b, extra); | |
1237 | u.b[extra] = ch & (bit-1); | |
1238 | } else | |
1239 | u.b[0] = ch; | |
1240 | #if CAREFUL_ALIGNMENT | |
1241 | u.x = IVAL(u.b,0); | |
1242 | #endif | |
1243 | #if SIZEOF_INT32 > 4 | |
1244 | if (u.x & (int32)0x80000000) | |
1245 | u.x |= ~(int32)0xffffffff; | |
1246 | #endif | |
1247 | return u.x; | |
1248 | } | |
71c46176 | 1249 | |
351e23ad WD |
1250 | int64 read_varlong(int f, uchar min_bytes) |
1251 | { | |
1252 | union { | |
1253 | char b[9]; | |
1254 | int64 x; | |
1255 | } u; | |
1256 | char b2[8]; | |
1257 | int extra; | |
71c46176 | 1258 | |
031fa9ad | 1259 | #if SIZEOF_INT64 < 8 |
351e23ad | 1260 | memset(u.b, 0, 8); |
031fa9ad | 1261 | #else |
351e23ad | 1262 | u.x = 0; |
031fa9ad | 1263 | #endif |
351e23ad WD |
1264 | readfd(f, b2, min_bytes); |
1265 | memcpy(u.b, b2+1, min_bytes-1); | |
1266 | extra = int_byte_extra[CVAL(b2, 0) / 4]; | |
1267 | if (extra) { | |
1268 | uchar bit = ((uchar)1<<(8-extra)); | |
1269 | if (min_bytes + extra > (int)sizeof u.b) { | |
1270 | rprintf(FERROR, "Overflow in read_varlong()\n"); | |
1271 | exit_cleanup(RERR_STREAMIO); | |
1272 | } | |
1273 | readfd(f, u.b + min_bytes - 1, extra); | |
1274 | u.b[min_bytes + extra - 1] = CVAL(b2, 0) & (bit-1); | |
4ea4acf1 | 1275 | #if SIZEOF_INT64 < 8 |
351e23ad | 1276 | if (min_bytes + extra > 5 || u.b[4] || CVAL(u.b,3) & 0x80) { |
4ea4acf1 WD |
1277 | rprintf(FERROR, "Integer overflow: attempted 64-bit offset\n"); |
1278 | exit_cleanup(RERR_UNSUPPORTED); | |
1279 | } | |
1280 | #endif | |
351e23ad WD |
1281 | } else |
1282 | u.b[min_bytes + extra - 1] = CVAL(b2, 0); | |
1283 | #if SIZEOF_INT64 < 8 | |
1284 | u.x = IVAL(u.b,0); | |
1285 | #elif CAREFUL_ALIGNMENT | |
1286 | u.x = IVAL(u.b,0) | (((int64)IVAL(u.b,4))<<32); | |
1287 | #endif | |
1288 | return u.x; | |
1289 | } | |
1290 | ||
1291 | int64 read_longint(int f) | |
1292 | { | |
4ea4acf1 | 1293 | #if SIZEOF_INT64 >= 8 |
351e23ad | 1294 | char b[9]; |
4ea4acf1 | 1295 | #endif |
351e23ad | 1296 | int32 num = read_int(f); |
71c46176 | 1297 | |
351e23ad WD |
1298 | if (num != (int32)0xffffffff) |
1299 | return num; | |
1300 | ||
1301 | #if SIZEOF_INT64 < 8 | |
1302 | rprintf(FERROR, "Integer overflow: attempted 64-bit offset\n"); | |
1303 | exit_cleanup(RERR_UNSUPPORTED); | |
1304 | #else | |
1305 | readfd(f, b, 8); | |
1306 | return IVAL(b,0) | (((int64)IVAL(b,4))<<32); | |
1307 | #endif | |
3a6a366f AT |
1308 | } |
1309 | ||
4a19c3b2 | 1310 | void read_buf(int f, char *buf, size_t len) |
720b47f2 | 1311 | { |
4c36ddbe | 1312 | readfd(f,buf,len); |
720b47f2 AT |
1313 | } |
1314 | ||
4a19c3b2 | 1315 | void read_sbuf(int f, char *buf, size_t len) |
575f2fca | 1316 | { |
93095cbe | 1317 | readfd(f, buf, len); |
af436313 | 1318 | buf[len] = '\0'; |
575f2fca AT |
1319 | } |
1320 | ||
9361f839 | 1321 | uchar read_byte(int f) |
182dca5c | 1322 | { |
9361f839 | 1323 | uchar c; |
93095cbe | 1324 | readfd(f, (char *)&c, 1); |
4c36ddbe | 1325 | return c; |
182dca5c | 1326 | } |
720b47f2 | 1327 | |
46e99b09 WD |
1328 | int read_vstring(int f, char *buf, int bufsize) |
1329 | { | |
1330 | int len = read_byte(f); | |
1331 | ||
1332 | if (len & 0x80) | |
1333 | len = (len & ~0x80) * 0x100 + read_byte(f); | |
1334 | ||
1335 | if (len >= bufsize) { | |
1336 | rprintf(FERROR, "over-long vstring received (%d > %d)\n", | |
1337 | len, bufsize - 1); | |
9a6ed83f | 1338 | return -1; |
46e99b09 WD |
1339 | } |
1340 | ||
1341 | if (len) | |
1342 | readfd(f, buf, len); | |
1343 | buf[len] = '\0'; | |
1344 | return len; | |
1345 | } | |
1346 | ||
188fed95 WD |
1347 | /* Populate a sum_struct with values from the socket. This is |
1348 | * called by both the sender and the receiver. */ | |
1349 | void read_sum_head(int f, struct sum_struct *sum) | |
1350 | { | |
8bd77e70 | 1351 | int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE; |
188fed95 | 1352 | sum->count = read_int(f); |
c638caa6 WD |
1353 | if (sum->count < 0) { |
1354 | rprintf(FERROR, "Invalid checksum count %ld [%s]\n", | |
1355 | (long)sum->count, who_am_i()); | |
1356 | exit_cleanup(RERR_PROTOCOL); | |
1357 | } | |
188fed95 | 1358 | sum->blength = read_int(f); |
8bd77e70 | 1359 | if (sum->blength < 0 || sum->blength > max_blength) { |
cdf236aa WD |
1360 | rprintf(FERROR, "Invalid block length %ld [%s]\n", |
1361 | (long)sum->blength, who_am_i()); | |
188fed95 WD |
1362 | exit_cleanup(RERR_PROTOCOL); |
1363 | } | |
1364 | sum->s2length = protocol_version < 27 ? csum_length : (int)read_int(f); | |
a0456b9c | 1365 | if (sum->s2length < 0 || sum->s2length > MAX_DIGEST_LEN) { |
cdf236aa WD |
1366 | rprintf(FERROR, "Invalid checksum length %d [%s]\n", |
1367 | sum->s2length, who_am_i()); | |
188fed95 WD |
1368 | exit_cleanup(RERR_PROTOCOL); |
1369 | } | |
1370 | sum->remainder = read_int(f); | |
1371 | if (sum->remainder < 0 || sum->remainder > sum->blength) { | |
cdf236aa WD |
1372 | rprintf(FERROR, "Invalid remainder length %ld [%s]\n", |
1373 | (long)sum->remainder, who_am_i()); | |
188fed95 WD |
1374 | exit_cleanup(RERR_PROTOCOL); |
1375 | } | |
1376 | } | |
1377 | ||
c207d7ec WD |
1378 | /* Send the values from a sum_struct over the socket. Set sum to |
1379 | * NULL if there are no checksums to send. This is called by both | |
1380 | * the generator and the sender. */ | |
1381 | void write_sum_head(int f, struct sum_struct *sum) | |
1382 | { | |
1383 | static struct sum_struct null_sum; | |
1384 | ||
1385 | if (sum == NULL) | |
1386 | sum = &null_sum; | |
1387 | ||
1388 | write_int(f, sum->count); | |
1389 | write_int(f, sum->blength); | |
1390 | if (protocol_version >= 27) | |
1391 | write_int(f, sum->s2length); | |
1392 | write_int(f, sum->remainder); | |
1393 | } | |
1394 | ||
08571358 MP |
1395 | /** |
1396 | * Sleep after writing to limit I/O bandwidth usage. | |
1397 | * | |
1398 | * @todo Rather than sleeping after each write, it might be better to | |
1399 | * use some kind of averaging. The current algorithm seems to always | |
1400 | * use a bit less bandwidth than specified, because it doesn't make up | |
1401 | * for slow periods. But arguably this is a feature. In addition, we | |
1402 | * ought to take the time used to write the data into account. | |
71e58630 WD |
1403 | * |
1404 | * During some phases of big transfers (file FOO is uptodate) this is | |
1405 | * called with a small bytes_written every time. As the kernel has to | |
1406 | * round small waits up to guarantee that we actually wait at least the | |
1407 | * requested number of microseconds, this can become grossly inaccurate. | |
1408 | * We therefore keep track of the bytes we've written over time and only | |
1409 | * sleep when the accumulated delay is at least 1 tenth of a second. | |
08571358 MP |
1410 | **/ |
1411 | static void sleep_for_bwlimit(int bytes_written) | |
1412 | { | |
71e58630 | 1413 | static struct timeval prior_tv; |
0f78b815 | 1414 | static long total_written = 0; |
71e58630 WD |
1415 | struct timeval tv, start_tv; |
1416 | long elapsed_usec, sleep_usec; | |
1417 | ||
1418 | #define ONE_SEC 1000000L /* # of microseconds in a second */ | |
08571358 | 1419 | |
9a0cfff5 | 1420 | if (!bwlimit_writemax) |
08571358 | 1421 | return; |
e681e820 | 1422 | |
0f78b815 | 1423 | total_written += bytes_written; |
71e58630 WD |
1424 | |
1425 | gettimeofday(&start_tv, NULL); | |
1426 | if (prior_tv.tv_sec) { | |
1427 | elapsed_usec = (start_tv.tv_sec - prior_tv.tv_sec) * ONE_SEC | |
1428 | + (start_tv.tv_usec - prior_tv.tv_usec); | |
1429 | total_written -= elapsed_usec * bwlimit / (ONE_SEC/1024); | |
1430 | if (total_written < 0) | |
1431 | total_written = 0; | |
1432 | } | |
3151cbae | 1433 | |
71e58630 WD |
1434 | sleep_usec = total_written * (ONE_SEC/1024) / bwlimit; |
1435 | if (sleep_usec < ONE_SEC / 10) { | |
1436 | prior_tv = start_tv; | |
1437 | return; | |
1438 | } | |
08571358 | 1439 | |
71e58630 WD |
1440 | tv.tv_sec = sleep_usec / ONE_SEC; |
1441 | tv.tv_usec = sleep_usec % ONE_SEC; | |
98b332ed | 1442 | select(0, NULL, NULL, NULL, &tv); |
71e58630 WD |
1443 | |
1444 | gettimeofday(&prior_tv, NULL); | |
1445 | elapsed_usec = (prior_tv.tv_sec - start_tv.tv_sec) * ONE_SEC | |
1446 | + (prior_tv.tv_usec - start_tv.tv_usec); | |
1447 | total_written = (sleep_usec - elapsed_usec) * bwlimit / (ONE_SEC/1024); | |
08571358 MP |
1448 | } |
1449 | ||
1f75bb10 | 1450 | /* Write len bytes to the file descriptor fd, looping as necessary to get |
0fb2fc4a | 1451 | * the job done and also (in certain circumstances) reading any data on |
af436313 | 1452 | * msg_fd_in to avoid deadlock. |
880da007 MP |
1453 | * |
1454 | * This function underlies the multiplexing system. The body of the | |
1f75bb10 | 1455 | * application never calls this function directly. */ |
4a19c3b2 | 1456 | static void writefd_unbuffered(int fd, const char *buf, size_t len) |
720b47f2 | 1457 | { |
1ea087a7 | 1458 | size_t n, total = 0; |
6c850772 | 1459 | fd_set w_fds, r_fds, e_fds; |
d8aeda1e | 1460 | int maxfd, count, cnt, using_r_fds; |
e4c877cf | 1461 | int defer_inc = 0; |
8d9dc9f9 | 1462 | struct timeval tv; |
720b47f2 | 1463 | |
3be97bf9 | 1464 | if (no_flush++) |
e4c877cf | 1465 | defer_forwarding_messages++, defer_inc++; |
e44f9a12 | 1466 | |
4c36ddbe | 1467 | while (total < len) { |
8d9dc9f9 | 1468 | FD_ZERO(&w_fds); |
6c850772 WD |
1469 | FD_SET(fd, &w_fds); |
1470 | FD_ZERO(&e_fds); | |
1471 | FD_SET(fd, &e_fds); | |
1ea087a7 | 1472 | maxfd = fd; |
4c36ddbe | 1473 | |
954bbed8 | 1474 | if (msg_fd_in >= 0) { |
56014c8c | 1475 | FD_ZERO(&r_fds); |
6c850772 | 1476 | FD_SET(msg_fd_in, &r_fds); |
1ea087a7 WD |
1477 | if (msg_fd_in > maxfd) |
1478 | maxfd = msg_fd_in; | |
3eeac9bc WD |
1479 | using_r_fds = 1; |
1480 | } else | |
1481 | using_r_fds = 0; | |
8d9dc9f9 | 1482 | |
e626b29e | 1483 | tv.tv_sec = select_timeout; |
8d9dc9f9 | 1484 | tv.tv_usec = 0; |
4c36ddbe | 1485 | |
554e0a8d | 1486 | errno = 0; |
3eeac9bc | 1487 | count = select(maxfd + 1, using_r_fds ? &r_fds : NULL, |
6c850772 | 1488 | &w_fds, &e_fds, &tv); |
4c36ddbe AT |
1489 | |
1490 | if (count <= 0) { | |
1ea087a7 | 1491 | if (count < 0 && errno == EBADF) |
554e0a8d | 1492 | exit_cleanup(RERR_SOCKETIO); |
bd717af8 | 1493 | check_timeout(); |
8d9dc9f9 AT |
1494 | continue; |
1495 | } | |
4c36ddbe | 1496 | |
35c8fd76 WD |
1497 | /*if (FD_ISSET(fd, &e_fds)) |
1498 | rprintf(FINFO, "select exception on fd %d\n", fd); */ | |
6c850772 | 1499 | |
3eeac9bc | 1500 | if (using_r_fds && FD_ISSET(msg_fd_in, &r_fds)) |
d17e1dd2 | 1501 | read_msg_fd(); |
554e0a8d | 1502 | |
9a6ed83f | 1503 | if (!FD_ISSET(fd, &w_fds)) |
1ea087a7 | 1504 | continue; |
4c36ddbe | 1505 | |
1ea087a7 | 1506 | n = len - total; |
9a0cfff5 | 1507 | if (bwlimit_writemax && n > bwlimit_writemax) |
1ea087a7 | 1508 | n = bwlimit_writemax; |
d8aeda1e | 1509 | cnt = write(fd, buf + total, n); |
1ea087a7 | 1510 | |
d8aeda1e WD |
1511 | if (cnt <= 0) { |
1512 | if (cnt < 0) { | |
3309507d WD |
1513 | if (errno == EINTR) |
1514 | continue; | |
1515 | if (errno == EWOULDBLOCK || errno == EAGAIN) { | |
1516 | msleep(1); | |
1517 | continue; | |
1518 | } | |
f0359dd0 AT |
1519 | } |
1520 | ||
1ea087a7 | 1521 | /* Don't try to write errors back across the stream. */ |
1f75bb10 | 1522 | if (fd == sock_f_out) |
8ef246e0 | 1523 | io_end_multiplex_out(); |
2a5df862 WD |
1524 | /* Don't try to write errors down a failing msg pipe. */ |
1525 | if (am_server && fd == msg_fd_out) | |
1526 | exit_cleanup(RERR_STREAMIO); | |
1ea087a7 | 1527 | rsyserr(FERROR, errno, |
b88c2e8f WD |
1528 | "writefd_unbuffered failed to write %ld bytes [%s]", |
1529 | (long)len, who_am_i()); | |
d1b31da7 WD |
1530 | /* If the other side is sending us error messages, try |
1531 | * to grab any messages they sent before they died. */ | |
f2179fd3 | 1532 | while (!am_server && fd == sock_f_out && io_multiplexing_in) { |
ba525f77 | 1533 | char buf[1024]; |
3b0a30eb | 1534 | set_io_timeout(30); |
9e2409ab | 1535 | ignore_timeout = 0; |
ba525f77 | 1536 | readfd_unbuffered(sock_f_in, buf, sizeof buf); |
d1b31da7 | 1537 | } |
1ea087a7 WD |
1538 | exit_cleanup(RERR_STREAMIO); |
1539 | } | |
4c36ddbe | 1540 | |
d8aeda1e | 1541 | total += cnt; |
e4c877cf | 1542 | defer_forwarding_messages++, defer_inc++; |
a800434a | 1543 | |
1f75bb10 | 1544 | if (fd == sock_f_out) { |
626bec8e | 1545 | if (io_timeout || am_generator) |
3b0a30eb | 1546 | last_io_out = time(NULL); |
d8aeda1e | 1547 | sleep_for_bwlimit(cnt); |
1f75bb10 | 1548 | } |
4c36ddbe | 1549 | } |
e44f9a12 AT |
1550 | |
1551 | no_flush--; | |
0b789446 WD |
1552 | if (keep_defer_forwarding) |
1553 | defer_inc--; | |
17a4977b | 1554 | if (!(defer_forwarding_messages -= defer_inc) && !no_flush) |
e4c877cf | 1555 | msg_flush(); |
d6dead6b AT |
1556 | } |
1557 | ||
0b789446 | 1558 | int io_flush(int flush_it_all) |
d6dead6b | 1559 | { |
0b789446 | 1560 | int flushed_something = 0; |
8d9dc9f9 | 1561 | |
0b789446 WD |
1562 | if (no_flush) |
1563 | return 0; | |
e4c877cf | 1564 | |
0b789446 WD |
1565 | if (iobuf_out_cnt) { |
1566 | if (io_multiplexing_out) | |
1567 | mplex_write(sock_f_out, MSG_DATA, iobuf_out, iobuf_out_cnt, 0); | |
1568 | else | |
1569 | writefd_unbuffered(iobuf_f_out, iobuf_out, iobuf_out_cnt); | |
1570 | iobuf_out_cnt = 0; | |
1571 | flushed_something = 1; | |
1572 | } | |
1573 | ||
1574 | if (flush_it_all && !defer_forwarding_messages && msg_queue.head) { | |
e4c877cf | 1575 | msg_flush(); |
0b789446 WD |
1576 | flushed_something = 1; |
1577 | } | |
1578 | ||
1579 | return flushed_something; | |
8d9dc9f9 AT |
1580 | } |
1581 | ||
4a19c3b2 | 1582 | static void writefd(int fd, const char *buf, size_t len) |
d6dead6b | 1583 | { |
1f75bb10 WD |
1584 | if (fd == sock_f_out) |
1585 | stats.total_written += len; | |
1586 | ||
b9f592fb WD |
1587 | if (fd == write_batch_monitor_out) { |
1588 | if ((size_t)write(batch_fd, buf, len) != len) | |
1589 | exit_cleanup(RERR_FILEIO); | |
1590 | } | |
1591 | ||
8ef246e0 | 1592 | if (!iobuf_out || fd != iobuf_f_out) { |
4c36ddbe AT |
1593 | writefd_unbuffered(fd, buf, len); |
1594 | return; | |
1595 | } | |
d6dead6b AT |
1596 | |
1597 | while (len) { | |
1f75bb10 | 1598 | int n = MIN((int)len, IO_BUFFER_SIZE - iobuf_out_cnt); |
d6dead6b | 1599 | if (n > 0) { |
1f75bb10 | 1600 | memcpy(iobuf_out+iobuf_out_cnt, buf, n); |
d6dead6b AT |
1601 | buf += n; |
1602 | len -= n; | |
1f75bb10 | 1603 | iobuf_out_cnt += n; |
d6dead6b | 1604 | } |
3151cbae | 1605 | |
1f75bb10 | 1606 | if (iobuf_out_cnt == IO_BUFFER_SIZE) |
d17e1dd2 | 1607 | io_flush(NORMAL_FLUSH); |
d6dead6b | 1608 | } |
d6dead6b | 1609 | } |
720b47f2 | 1610 | |
3a993aa4 | 1611 | void write_shortint(int f, unsigned short x) |
9361f839 | 1612 | { |
3a993aa4 WD |
1613 | char b[2]; |
1614 | b[0] = (char)x; | |
1615 | b[1] = (char)(x >> 8); | |
1616 | writefd(f, b, 2); | |
9361f839 WD |
1617 | } |
1618 | ||
351e23ad WD |
1619 | void write_int(int f, int32 x) |
1620 | { | |
1621 | char b[4]; | |
1622 | SIVAL(b, 0, x); | |
1623 | writefd(f, b, 4); | |
1624 | } | |
1625 | ||
f31514ad | 1626 | void write_varint(int f, int32 x) |
1c3344a1 WD |
1627 | { |
1628 | char b[5]; | |
351e23ad WD |
1629 | uchar bit; |
1630 | int cnt = 4; | |
1631 | ||
1632 | SIVAL(b, 1, x); | |
1633 | ||
1634 | while (cnt > 1 && b[cnt] == 0) | |
1635 | cnt--; | |
1636 | bit = ((uchar)1<<(7-cnt+1)); | |
1637 | if (CVAL(b, cnt) >= bit) { | |
1638 | cnt++; | |
1639 | *b = ~(bit-1); | |
1640 | } else if (cnt > 1) | |
1641 | *b = b[cnt] | ~(bit*2-1); | |
1642 | else | |
1643 | *b = b[cnt]; | |
1644 | ||
1645 | writefd(f, b, cnt); | |
1c3344a1 WD |
1646 | } |
1647 | ||
351e23ad | 1648 | void write_varlong(int f, int64 x, uchar min_bytes) |
720b47f2 | 1649 | { |
351e23ad WD |
1650 | char b[9]; |
1651 | uchar bit; | |
1652 | int cnt = 8; | |
1653 | ||
1654 | SIVAL(b, 1, x); | |
1655 | #if SIZEOF_INT64 >= 8 | |
1656 | SIVAL(b, 5, x >> 32); | |
1657 | #else | |
1658 | if (x <= 0x7FFFFFFF && x >= 0) | |
1659 | memset(b + 5, 0, 4); | |
1660 | else { | |
1661 | rprintf(FERROR, "Integer overflow: attempted 64-bit offset\n"); | |
1662 | exit_cleanup(RERR_UNSUPPORTED); | |
1663 | } | |
1664 | #endif | |
1665 | ||
1666 | while (cnt > min_bytes && b[cnt] == 0) | |
1667 | cnt--; | |
1668 | bit = ((uchar)1<<(7-cnt+min_bytes)); | |
1669 | if (CVAL(b, cnt) >= bit) { | |
1670 | cnt++; | |
1671 | *b = ~(bit-1); | |
1672 | } else if (cnt > min_bytes) | |
1673 | *b = b[cnt] | ~(bit*2-1); | |
1674 | else | |
1675 | *b = b[cnt]; | |
1676 | ||
1677 | writefd(f, b, cnt); | |
720b47f2 AT |
1678 | } |
1679 | ||
7a24c346 MP |
1680 | /* |
1681 | * Note: int64 may actually be a 32-bit type if ./configure couldn't find any | |
1682 | * 64-bit types on this platform. | |
1683 | */ | |
71c46176 | 1684 | void write_longint(int f, int64 x) |
3a6a366f | 1685 | { |
351e23ad | 1686 | char b[12], * const s = b+4; |
3a6a366f | 1687 | |
351e23ad WD |
1688 | SIVAL(s, 0, x); |
1689 | if (x <= 0x7FFFFFFF && x >= 0) { | |
482f48cc | 1690 | writefd(f, s, 4); |
351e23ad WD |
1691 | return; |
1692 | } | |
3a6a366f | 1693 | |
4ea4acf1 | 1694 | #if SIZEOF_INT64 < 8 |
351e23ad WD |
1695 | rprintf(FERROR, "Integer overflow: attempted 64-bit offset\n"); |
1696 | exit_cleanup(RERR_UNSUPPORTED); | |
4ea4acf1 | 1697 | #else |
351e23ad WD |
1698 | memset(b, 0xFF, 4); |
1699 | SIVAL(s, 4, x >> 32); | |
1700 | writefd(f, b, 12); | |
4ea4acf1 | 1701 | #endif |
3a6a366f AT |
1702 | } |
1703 | ||
4a19c3b2 | 1704 | void write_buf(int f, const char *buf, size_t len) |
720b47f2 | 1705 | { |
4c36ddbe | 1706 | writefd(f,buf,len); |
720b47f2 AT |
1707 | } |
1708 | ||
880da007 | 1709 | /** Write a string to the connection */ |
4a19c3b2 | 1710 | void write_sbuf(int f, const char *buf) |
f0fca04e | 1711 | { |
93095cbe | 1712 | writefd(f, buf, strlen(buf)); |
f0fca04e AT |
1713 | } |
1714 | ||
9361f839 | 1715 | void write_byte(int f, uchar c) |
182dca5c | 1716 | { |
93095cbe | 1717 | writefd(f, (char *)&c, 1); |
182dca5c AT |
1718 | } |
1719 | ||
4a19c3b2 | 1720 | void write_vstring(int f, const char *str, int len) |
46e99b09 WD |
1721 | { |
1722 | uchar lenbuf[3], *lb = lenbuf; | |
1723 | ||
1724 | if (len > 0x7F) { | |
1725 | if (len > 0x7FFF) { | |
1726 | rprintf(FERROR, | |
1727 | "attempting to send over-long vstring (%d > %d)\n", | |
1728 | len, 0x7FFF); | |
1729 | exit_cleanup(RERR_PROTOCOL); | |
1730 | } | |
1731 | *lb++ = len / 0x100 + 0x80; | |
1732 | } | |
1733 | *lb = len; | |
1734 | ||
1735 | writefd(f, (char*)lenbuf, lb - lenbuf + 1); | |
1736 | if (len) | |
1737 | writefd(f, str, len); | |
1738 | } | |
1739 | ||
8a65e0ce WD |
1740 | /* Send a file-list index using a byte-reduction method. */ |
1741 | void write_ndx(int f, int32 ndx) | |
1742 | { | |
1743 | static int32 prev_positive = -1, prev_negative = 1; | |
1744 | int32 diff, cnt = 0; | |
1745 | char b[6]; | |
1746 | ||
1747 | if (protocol_version < 30 || read_batch) { | |
1748 | write_int(f, ndx); | |
1749 | return; | |
1750 | } | |
1751 | ||
1752 | /* Send NDX_DONE as a single-byte 0 with no side effects. Send | |
1753 | * negative nums as a positive after sending a leading 0xFF. */ | |
1754 | if (ndx >= 0) { | |
1755 | diff = ndx - prev_positive; | |
1756 | prev_positive = ndx; | |
1757 | } else if (ndx == NDX_DONE) { | |
1758 | *b = 0; | |
1759 | writefd(f, b, 1); | |
1760 | return; | |
1761 | } else { | |
1762 | b[cnt++] = (char)0xFF; | |
1763 | ndx = -ndx; | |
1764 | diff = ndx - prev_negative; | |
1765 | prev_negative = ndx; | |
1766 | } | |
1767 | ||
1768 | /* A diff of 1 - 253 is sent as a one-byte diff; a diff of 254 - 32767 | |
1769 | * or 0 is sent as a 0xFE + a two-byte diff; otherwise we send 0xFE | |
1770 | * & all 4 bytes of the (non-negative) num with the high-bit set. */ | |
1771 | if (diff < 0xFE && diff > 0) | |
1772 | b[cnt++] = (char)diff; | |
1773 | else if (diff < 0 || diff > 0x7FFF) { | |
1774 | b[cnt++] = (char)0xFE; | |
1775 | b[cnt++] = (char)((ndx >> 24) | 0x80); | |
8a65e0ce | 1776 | b[cnt++] = (char)ndx; |
351e23ad WD |
1777 | b[cnt++] = (char)(ndx >> 8); |
1778 | b[cnt++] = (char)(ndx >> 16); | |
8a65e0ce WD |
1779 | } else { |
1780 | b[cnt++] = (char)0xFE; | |
1781 | b[cnt++] = (char)(diff >> 8); | |
1782 | b[cnt++] = (char)diff; | |
1783 | } | |
1784 | writefd(f, b, cnt); | |
1785 | } | |
1786 | ||
1787 | /* Receive a file-list index using a byte-reduction method. */ | |
1788 | int32 read_ndx(int f) | |
1789 | { | |
1790 | static int32 prev_positive = -1, prev_negative = 1; | |
1791 | int32 *prev_ptr, num; | |
1792 | char b[4]; | |
1793 | ||
1794 | if (protocol_version < 30) | |
1795 | return read_int(f); | |
1796 | ||
1797 | readfd(f, b, 1); | |
1798 | if (CVAL(b, 0) == 0xFF) { | |
1799 | readfd(f, b, 1); | |
1800 | prev_ptr = &prev_negative; | |
1801 | } else if (CVAL(b, 0) == 0) | |
1802 | return NDX_DONE; | |
1803 | else | |
1804 | prev_ptr = &prev_positive; | |
1805 | if (CVAL(b, 0) == 0xFE) { | |
1806 | readfd(f, b, 2); | |
1807 | if (CVAL(b, 0) & 0x80) { | |
351e23ad WD |
1808 | b[3] = CVAL(b, 0) & ~0x80; |
1809 | b[0] = b[1]; | |
1810 | readfd(f, b+1, 2); | |
1811 | num = IVAL(b, 0); | |
8a65e0ce | 1812 | } else |
351e23ad | 1813 | num = (UVAL(b,0)<<8) + UVAL(b,1) + *prev_ptr; |
8a65e0ce | 1814 | } else |
351e23ad | 1815 | num = UVAL(b, 0) + *prev_ptr; |
8a65e0ce WD |
1816 | *prev_ptr = num; |
1817 | if (prev_ptr == &prev_negative) | |
1818 | num = -num; | |
1819 | return num; | |
1820 | } | |
1821 | ||
67b8f3df WD |
1822 | /* Read a line of up to bufsiz-1 characters into buf. Strips |
1823 | * the (required) trailing newline and all carriage returns. | |
1824 | * Returns 1 for success; 0 for I/O error or truncation. */ | |
1825 | int read_line_old(int f, char *buf, size_t bufsiz) | |
f0fca04e | 1826 | { |
67b8f3df WD |
1827 | bufsiz--; /* leave room for the null */ |
1828 | while (bufsiz > 0) { | |
528bfcd7 | 1829 | buf[0] = 0; |
f0fca04e | 1830 | read_buf(f, buf, 1); |
914cc65c MP |
1831 | if (buf[0] == 0) |
1832 | return 0; | |
6ed6d7f5 | 1833 | if (buf[0] == '\n') |
f0fca04e | 1834 | break; |
f0fca04e AT |
1835 | if (buf[0] != '\r') { |
1836 | buf++; | |
67b8f3df | 1837 | bufsiz--; |
f0fca04e AT |
1838 | } |
1839 | } | |
6ed6d7f5 | 1840 | *buf = '\0'; |
67b8f3df | 1841 | return bufsiz > 0; |
f0fca04e AT |
1842 | } |
1843 | ||
f0fca04e AT |
1844 | void io_printf(int fd, const char *format, ...) |
1845 | { | |
d62bcc17 | 1846 | va_list ap; |
33544bf4 | 1847 | char buf[BIGPATHBUFLEN]; |
f0fca04e | 1848 | int len; |
3151cbae | 1849 | |
f0fca04e | 1850 | va_start(ap, format); |
3151cbae | 1851 | len = vsnprintf(buf, sizeof buf, format, ap); |
f0fca04e AT |
1852 | va_end(ap); |
1853 | ||
f89b9368 WD |
1854 | if (len < 0) |
1855 | exit_cleanup(RERR_STREAMIO); | |
f0fca04e | 1856 | |
33544bf4 WD |
1857 | if (len > (int)sizeof buf) { |
1858 | rprintf(FERROR, "io_printf() was too long for the buffer.\n"); | |
1859 | exit_cleanup(RERR_STREAMIO); | |
1860 | } | |
1861 | ||
f0fca04e AT |
1862 | write_sbuf(fd, buf); |
1863 | } | |
8d9dc9f9 | 1864 | |
d17e1dd2 | 1865 | /** Setup for multiplexing a MSG_* stream with the data stream. */ |
1f75bb10 | 1866 | void io_start_multiplex_out(void) |
8d9dc9f9 | 1867 | { |
d17e1dd2 | 1868 | io_flush(NORMAL_FLUSH); |
8ef246e0 | 1869 | io_start_buffering_out(sock_f_out); |
8d9dc9f9 AT |
1870 | io_multiplexing_out = 1; |
1871 | } | |
1872 | ||
d17e1dd2 | 1873 | /** Setup for multiplexing a MSG_* stream with the data stream. */ |
1f75bb10 | 1874 | void io_start_multiplex_in(void) |
8d9dc9f9 | 1875 | { |
d17e1dd2 | 1876 | io_flush(NORMAL_FLUSH); |
8ef246e0 | 1877 | io_start_buffering_in(sock_f_in); |
8d9dc9f9 AT |
1878 | io_multiplexing_in = 1; |
1879 | } | |
1880 | ||
d17e1dd2 | 1881 | /** Write an message to the multiplexed data stream. */ |
332cf6df | 1882 | int io_multiplex_write(enum msgcode code, const char *buf, size_t len, int convert) |
8d9dc9f9 | 1883 | { |
f89b9368 WD |
1884 | if (!io_multiplexing_out) |
1885 | return 0; | |
d17e1dd2 | 1886 | io_flush(NORMAL_FLUSH); |
1b7c47cb | 1887 | stats.total_written += (len+4); |
332cf6df | 1888 | mplex_write(sock_f_out, code, buf, len, convert); |
8d9dc9f9 AT |
1889 | return 1; |
1890 | } | |
1891 | ||
8ef246e0 | 1892 | void io_end_multiplex_in(void) |
7f459268 WD |
1893 | { |
1894 | io_multiplexing_in = 0; | |
8ef246e0 | 1895 | io_end_buffering_in(); |
7f459268 WD |
1896 | } |
1897 | ||
d17e1dd2 | 1898 | /** Stop output multiplexing. */ |
8ef246e0 | 1899 | void io_end_multiplex_out(void) |
554e0a8d AT |
1900 | { |
1901 | io_multiplexing_out = 0; | |
8ef246e0 | 1902 | io_end_buffering_out(); |
554e0a8d AT |
1903 | } |
1904 | ||
b9f592fb WD |
1905 | void start_write_batch(int fd) |
1906 | { | |
1907 | /* Some communication has already taken place, but we don't | |
1908 | * enable batch writing until here so that we can write a | |
1909 | * canonical record of the communication even though the | |
1910 | * actual communication so far depends on whether a daemon | |
1911 | * is involved. */ | |
1912 | write_int(batch_fd, protocol_version); | |
71456d30 WD |
1913 | if (protocol_version >= 30) |
1914 | write_byte(batch_fd, inc_recurse); | |
b9f592fb | 1915 | write_int(batch_fd, checksum_seed); |
b9f592fb WD |
1916 | |
1917 | if (am_sender) | |
1918 | write_batch_monitor_out = fd; | |
1919 | else | |
1920 | write_batch_monitor_in = fd; | |
1921 | } | |
1922 | ||
1923 | void stop_write_batch(void) | |
1924 | { | |
1925 | write_batch_monitor_out = -1; | |
1926 | write_batch_monitor_in = -1; | |
1927 | } |