Commit | Line | Data |
---|---|---|
720b47f2 AT |
1 | /* |
2 | Copyright (C) Andrew Tridgell 1996 | |
3 | Copyright (C) Paul Mackerras 1996 | |
4 | ||
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. | |
9 | ||
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. | |
14 | ||
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. | |
18 | */ | |
19 | ||
20 | /* | |
21 | Utilities used in rsync | |
22 | ||
23 | tridge, June 1996 | |
24 | */ | |
25 | #include "rsync.h" | |
26 | ||
8cd9fd4e AT |
27 | /* if no timeout is specified then use a 60 second select timeout */ |
28 | #define SELECT_TIMEOUT 60 | |
29 | ||
8d9dc9f9 AT |
30 | static int io_multiplexing_out; |
31 | static int io_multiplexing_in; | |
679e7657 AT |
32 | static int multiplex_in_fd; |
33 | static int multiplex_out_fd; | |
8d9dc9f9 | 34 | static time_t last_io; |
528bfcd7 | 35 | static int eof_error=1; |
720b47f2 | 36 | extern int verbose; |
6ba9279f | 37 | extern int io_timeout; |
a800434a | 38 | extern struct stats stats; |
720b47f2 AT |
39 | |
40 | static int buffer_f_in = -1; | |
41 | ||
4c36ddbe | 42 | void setup_readbuffer(int f_in) |
720b47f2 | 43 | { |
22d6234e | 44 | buffer_f_in = f_in; |
720b47f2 AT |
45 | } |
46 | ||
8d9dc9f9 AT |
47 | static void check_timeout(void) |
48 | { | |
49 | time_t t; | |
50 | ||
51 | if (!io_timeout) return; | |
52 | ||
53 | if (!last_io) { | |
54 | last_io = time(NULL); | |
55 | return; | |
56 | } | |
57 | ||
58 | t = time(NULL); | |
59 | ||
86ffe37f AT |
60 | if (last_io && io_timeout && (t-last_io) >= io_timeout) { |
61 | rprintf(FERROR,"io timeout after %d second - exiting\n", | |
8d9dc9f9 AT |
62 | (int)(t-last_io)); |
63 | exit_cleanup(1); | |
64 | } | |
65 | } | |
66 | ||
720b47f2 | 67 | |
3a6a366f AT |
68 | static char *read_buffer; |
69 | static char *read_buffer_p; | |
70 | static int read_buffer_len; | |
71 | static int read_buffer_size; | |
e44f9a12 | 72 | static int no_flush; |
c46ded46 | 73 | static int no_flush_read; |
720b47f2 | 74 | |
4c36ddbe AT |
75 | /* read from a socket with IO timeout. return the number of |
76 | bytes read. If no bytes can be read then exit, never return | |
77 | a number <= 0 */ | |
78 | static int read_timeout(int fd, char *buf, int len) | |
8d9dc9f9 | 79 | { |
4c36ddbe AT |
80 | int n, ret=0; |
81 | ||
c46ded46 | 82 | no_flush_read++; |
ea2111d1 | 83 | io_flush(); |
c46ded46 | 84 | no_flush_read--; |
ea2111d1 | 85 | |
4c36ddbe AT |
86 | while (ret == 0) { |
87 | fd_set fds; | |
88 | struct timeval tv; | |
89 | ||
90 | FD_ZERO(&fds); | |
91 | FD_SET(fd, &fds); | |
8cd9fd4e | 92 | tv.tv_sec = io_timeout?io_timeout:SELECT_TIMEOUT; |
4c36ddbe AT |
93 | tv.tv_usec = 0; |
94 | ||
8cd9fd4e | 95 | if (select(fd+1, &fds, NULL, NULL, &tv) != 1) { |
4c36ddbe AT |
96 | check_timeout(); |
97 | continue; | |
98 | } | |
99 | ||
100 | n = read(fd, buf, len); | |
101 | ||
8d9dc9f9 | 102 | if (n > 0) { |
a800434a | 103 | stats.total_read += n; |
8d9dc9f9 AT |
104 | buf += n; |
105 | len -= n; | |
4c36ddbe AT |
106 | ret += n; |
107 | if (io_timeout) | |
108 | last_io = time(NULL); | |
109 | continue; | |
8d9dc9f9 | 110 | } |
4c36ddbe AT |
111 | |
112 | if (n == -1 && errno == EINTR) { | |
113 | continue; | |
114 | } | |
115 | ||
f7b93778 AT |
116 | if (n == -1 && |
117 | (errno == EAGAIN || errno == EWOULDBLOCK)) { | |
118 | /* this shouldn't happen, if it does then | |
119 | sleep for a short time to prevent us | |
120 | chewing too much CPU */ | |
121 | u_sleep(100); | |
122 | continue; | |
123 | } | |
124 | ||
8d9dc9f9 | 125 | if (n == 0) { |
528bfcd7 | 126 | if (eof_error) { |
ca8e9694 | 127 | rprintf(FERROR,"unexpected EOF in read_timeout\n"); |
528bfcd7 | 128 | } |
8d9dc9f9 AT |
129 | exit_cleanup(1); |
130 | } | |
8d9dc9f9 | 131 | |
4c36ddbe AT |
132 | rprintf(FERROR,"read error: %s\n", strerror(errno)); |
133 | exit_cleanup(1); | |
134 | } | |
8d9dc9f9 | 135 | |
4c36ddbe AT |
136 | return ret; |
137 | } | |
8d9dc9f9 | 138 | |
4c36ddbe AT |
139 | /* continue trying to read len bytes - don't return until len |
140 | has been read */ | |
141 | static void read_loop(int fd, char *buf, int len) | |
142 | { | |
143 | while (len) { | |
144 | int n = read_timeout(fd, buf, len); | |
145 | ||
146 | buf += n; | |
147 | len -= n; | |
8d9dc9f9 AT |
148 | } |
149 | } | |
150 | ||
cad2bba7 | 151 | /* read from the file descriptor handling multiplexing - |
4c36ddbe AT |
152 | return number of bytes read |
153 | never return <= 0 */ | |
8d9dc9f9 AT |
154 | static int read_unbuffered(int fd, char *buf, int len) |
155 | { | |
156 | static int remaining; | |
157 | char ibuf[4]; | |
158 | int tag, ret=0; | |
159 | char line[1024]; | |
160 | ||
679e7657 | 161 | if (!io_multiplexing_in || fd != multiplex_in_fd) |
4c36ddbe | 162 | return read_timeout(fd, buf, len); |
8d9dc9f9 AT |
163 | |
164 | while (ret == 0) { | |
165 | if (remaining) { | |
166 | len = MIN(len, remaining); | |
167 | read_loop(fd, buf, len); | |
168 | remaining -= len; | |
169 | ret = len; | |
170 | continue; | |
171 | } | |
172 | ||
173 | read_loop(fd, ibuf, 4); | |
174 | tag = IVAL(ibuf, 0); | |
679e7657 | 175 | |
8d9dc9f9 AT |
176 | remaining = tag & 0xFFFFFF; |
177 | tag = tag >> 24; | |
178 | ||
179 | if (tag == MPLEX_BASE) continue; | |
180 | ||
181 | tag -= MPLEX_BASE; | |
182 | ||
183 | if (tag != FERROR && tag != FINFO) { | |
184 | rprintf(FERROR,"unexpected tag %d\n", tag); | |
185 | exit_cleanup(1); | |
186 | } | |
187 | ||
188 | if (remaining > sizeof(line)-1) { | |
189 | rprintf(FERROR,"multiplexing overflow %d\n\n", | |
190 | remaining); | |
191 | exit_cleanup(1); | |
192 | } | |
193 | ||
194 | read_loop(fd, line, remaining); | |
195 | line[remaining] = 0; | |
196 | ||
197 | rprintf(tag,"%s", line); | |
198 | remaining = 0; | |
199 | } | |
200 | ||
201 | return ret; | |
202 | } | |
203 | ||
204 | ||
4c36ddbe | 205 | |
720b47f2 AT |
206 | /* This function was added to overcome a deadlock problem when using |
207 | * ssh. It looks like we can't allow our receive queue to get full or | |
208 | * ssh will clag up. Uggh. */ | |
209 | static void read_check(int f) | |
210 | { | |
4c36ddbe | 211 | int n = 8192; |
720b47f2 | 212 | |
5dd7e031 | 213 | if (f == -1) return; |
05c629f7 | 214 | |
5dd7e031 AT |
215 | if (read_buffer_len == 0) { |
216 | read_buffer_p = read_buffer; | |
217 | } | |
720b47f2 | 218 | |
5dd7e031 AT |
219 | if (n > MAX_READ_BUFFER/4) |
220 | n = MAX_READ_BUFFER/4; | |
720b47f2 | 221 | |
5dd7e031 AT |
222 | if (read_buffer_p != read_buffer) { |
223 | memmove(read_buffer,read_buffer_p,read_buffer_len); | |
224 | read_buffer_p = read_buffer; | |
225 | } | |
720b47f2 | 226 | |
5dd7e031 AT |
227 | if (n > (read_buffer_size - read_buffer_len)) { |
228 | read_buffer_size += n; | |
fe8c0a98 | 229 | read_buffer = (char *)Realloc(read_buffer,read_buffer_size); |
5dd7e031 AT |
230 | if (!read_buffer) out_of_memory("read check"); |
231 | read_buffer_p = read_buffer; | |
232 | } | |
233 | ||
8d9dc9f9 | 234 | n = read_unbuffered(f,read_buffer+read_buffer_len,n); |
4c36ddbe | 235 | read_buffer_len += n; |
720b47f2 AT |
236 | } |
237 | ||
4c36ddbe AT |
238 | |
239 | /* do a buffered read from fd. don't return until all N bytes | |
240 | have been read. If all N can't be read then exit with an error */ | |
241 | static void readfd(int fd,char *buffer,int N) | |
720b47f2 | 242 | { |
6ba9279f AT |
243 | int ret; |
244 | int total=0; | |
6ba9279f | 245 | |
eb601ffe | 246 | if ((read_buffer_len < N) && (N < 1024)) { |
6ba9279f | 247 | read_check(buffer_f_in); |
4c36ddbe | 248 | } |
6ba9279f AT |
249 | |
250 | while (total < N) { | |
251 | if (read_buffer_len > 0 && buffer_f_in == fd) { | |
252 | ret = MIN(read_buffer_len,N-total); | |
253 | memcpy(buffer+total,read_buffer_p,ret); | |
254 | read_buffer_p += ret; | |
255 | read_buffer_len -= ret; | |
a070c37b | 256 | total += ret; |
6ba9279f AT |
257 | continue; |
258 | } | |
259 | ||
c46ded46 | 260 | no_flush_read++; |
8d9dc9f9 | 261 | io_flush(); |
c46ded46 | 262 | no_flush_read--; |
8d9dc9f9 | 263 | |
4c36ddbe | 264 | ret = read_unbuffered(fd,buffer + total,N-total); |
6ba9279f | 265 | total += ret; |
7f28dbee | 266 | } |
720b47f2 AT |
267 | } |
268 | ||
269 | ||
b7922338 | 270 | int32 read_int(int f) |
720b47f2 | 271 | { |
4c36ddbe AT |
272 | char b[4]; |
273 | readfd(f,b,4); | |
4c36ddbe | 274 | return IVAL(b,0); |
720b47f2 AT |
275 | } |
276 | ||
71c46176 | 277 | int64 read_longint(int f) |
3a6a366f AT |
278 | { |
279 | extern int remote_version; | |
71c46176 | 280 | int64 ret; |
3a6a366f AT |
281 | char b[8]; |
282 | ret = read_int(f); | |
71c46176 | 283 | |
b7922338 | 284 | if ((int32)ret != (int32)0xffffffff) return ret; |
71c46176 | 285 | |
3bee6733 | 286 | #ifdef NO_INT64 |
9486289c | 287 | rprintf(FERROR,"Integer overflow - attempted 64 bit offset\n"); |
71c46176 AT |
288 | exit_cleanup(1); |
289 | #else | |
290 | if (remote_version >= 16) { | |
4c36ddbe | 291 | readfd(f,b,8); |
71c46176 | 292 | ret = IVAL(b,0) | (((int64)IVAL(b,4))<<32); |
3a6a366f | 293 | } |
71c46176 AT |
294 | #endif |
295 | ||
3a6a366f AT |
296 | return ret; |
297 | } | |
298 | ||
720b47f2 AT |
299 | void read_buf(int f,char *buf,int len) |
300 | { | |
4c36ddbe | 301 | readfd(f,buf,len); |
720b47f2 AT |
302 | } |
303 | ||
575f2fca AT |
304 | void read_sbuf(int f,char *buf,int len) |
305 | { | |
306 | read_buf(f,buf,len); | |
307 | buf[len] = 0; | |
308 | } | |
309 | ||
182dca5c AT |
310 | unsigned char read_byte(int f) |
311 | { | |
4c36ddbe AT |
312 | unsigned char c; |
313 | read_buf(f,(char *)&c,1); | |
314 | return c; | |
182dca5c | 315 | } |
720b47f2 | 316 | |
7bec6a5c | 317 | |
7bec6a5c | 318 | |
4c36ddbe AT |
319 | /* write len bytes to fd, possibly reading from buffer_f_in if set |
320 | in order to unclog the pipe. don't return until all len | |
321 | bytes have been written */ | |
322 | static void writefd_unbuffered(int fd,char *buf,int len) | |
720b47f2 | 323 | { |
8d9dc9f9 AT |
324 | int total = 0; |
325 | fd_set w_fds, r_fds; | |
4c36ddbe | 326 | int fd_count, count; |
8d9dc9f9 | 327 | struct timeval tv; |
c46ded46 | 328 | int reading=0; |
bf9f0168 | 329 | int blocked=0; |
720b47f2 | 330 | |
e44f9a12 AT |
331 | no_flush++; |
332 | ||
4c36ddbe | 333 | while (total < len) { |
8d9dc9f9 AT |
334 | FD_ZERO(&w_fds); |
335 | FD_ZERO(&r_fds); | |
336 | FD_SET(fd,&w_fds); | |
4c36ddbe AT |
337 | fd_count = fd+1; |
338 | ||
c46ded46 | 339 | if (!no_flush_read) { |
2f9af901 | 340 | reading = (buffer_f_in != -1); |
c46ded46 | 341 | } |
c95f1aa9 | 342 | |
4c36ddbe | 343 | if (reading) { |
8d9dc9f9 AT |
344 | FD_SET(buffer_f_in,&r_fds); |
345 | if (buffer_f_in > fd) | |
346 | fd_count = buffer_f_in+1; | |
347 | } | |
348 | ||
8cd9fd4e | 349 | tv.tv_sec = io_timeout?io_timeout:SELECT_TIMEOUT; |
8d9dc9f9 | 350 | tv.tv_usec = 0; |
4c36ddbe AT |
351 | |
352 | count = select(fd_count, | |
353 | reading?&r_fds:NULL, | |
354 | &w_fds,NULL, | |
8cd9fd4e | 355 | &tv); |
4c36ddbe AT |
356 | |
357 | if (count <= 0) { | |
8d9dc9f9 AT |
358 | check_timeout(); |
359 | continue; | |
360 | } | |
4c36ddbe | 361 | |
c95f1aa9 AT |
362 | if (reading && FD_ISSET(buffer_f_in, &r_fds)) { |
363 | read_check(buffer_f_in); | |
364 | } | |
365 | ||
8d9dc9f9 | 366 | if (FD_ISSET(fd, &w_fds)) { |
bf9f0168 AT |
367 | int n = (len-total)>>blocked; |
368 | int ret = write(fd,buf+total,n?n:1); | |
4c36ddbe AT |
369 | |
370 | if (ret == -1 && errno == EINTR) { | |
371 | continue; | |
372 | } | |
373 | ||
f7b93778 AT |
374 | if (ret == -1 && |
375 | (errno == EAGAIN || errno == EWOULDBLOCK)) { | |
bf9f0168 | 376 | blocked++; |
f7b93778 AT |
377 | continue; |
378 | } | |
379 | ||
4c36ddbe AT |
380 | if (ret <= 0) { |
381 | rprintf(FERROR,"erroring writing %d bytes - exiting\n", len); | |
382 | exit_cleanup(1); | |
383 | } | |
384 | ||
bf9f0168 | 385 | blocked = 0; |
4c36ddbe | 386 | total += ret; |
a800434a AT |
387 | stats.total_written += ret; |
388 | ||
4c36ddbe AT |
389 | if (io_timeout) |
390 | last_io = time(NULL); | |
8d9dc9f9 | 391 | } |
4c36ddbe | 392 | } |
e44f9a12 AT |
393 | |
394 | no_flush--; | |
720b47f2 AT |
395 | } |
396 | ||
8d9dc9f9 | 397 | |
d6dead6b AT |
398 | static char *io_buffer; |
399 | static int io_buffer_count; | |
400 | ||
401 | void io_start_buffering(int fd) | |
402 | { | |
8d9dc9f9 | 403 | if (io_buffer) return; |
679e7657 | 404 | multiplex_out_fd = fd; |
8d9dc9f9 | 405 | io_buffer = (char *)malloc(IO_BUFFER_SIZE+4); |
d6dead6b AT |
406 | if (!io_buffer) out_of_memory("writefd"); |
407 | io_buffer_count = 0; | |
8d9dc9f9 AT |
408 | |
409 | /* leave room for the multiplex header in case it's needed */ | |
410 | io_buffer += 4; | |
d6dead6b AT |
411 | } |
412 | ||
8d9dc9f9 | 413 | void io_flush(void) |
d6dead6b | 414 | { |
679e7657 | 415 | int fd = multiplex_out_fd; |
e44f9a12 | 416 | if (!io_buffer_count || no_flush) return; |
8d9dc9f9 AT |
417 | |
418 | if (io_multiplexing_out) { | |
419 | SIVAL(io_buffer-4, 0, (MPLEX_BASE<<24) + io_buffer_count); | |
4c36ddbe | 420 | writefd_unbuffered(fd, io_buffer-4, io_buffer_count+4); |
8d9dc9f9 | 421 | } else { |
4c36ddbe | 422 | writefd_unbuffered(fd, io_buffer, io_buffer_count); |
d6dead6b | 423 | } |
8d9dc9f9 AT |
424 | io_buffer_count = 0; |
425 | } | |
426 | ||
427 | void io_end_buffering(int fd) | |
428 | { | |
429 | io_flush(); | |
430 | if (!io_multiplexing_out) { | |
431 | free(io_buffer-4); | |
432 | io_buffer = NULL; | |
433 | } | |
d6dead6b AT |
434 | } |
435 | ||
4c36ddbe | 436 | static void writefd(int fd,char *buf,int len) |
d6dead6b | 437 | { |
4c36ddbe AT |
438 | if (!io_buffer) { |
439 | writefd_unbuffered(fd, buf, len); | |
440 | return; | |
441 | } | |
d6dead6b AT |
442 | |
443 | while (len) { | |
444 | int n = MIN(len, IO_BUFFER_SIZE-io_buffer_count); | |
445 | if (n > 0) { | |
446 | memcpy(io_buffer+io_buffer_count, buf, n); | |
447 | buf += n; | |
448 | len -= n; | |
449 | io_buffer_count += n; | |
450 | } | |
451 | ||
8d9dc9f9 | 452 | if (io_buffer_count == IO_BUFFER_SIZE) io_flush(); |
d6dead6b | 453 | } |
d6dead6b | 454 | } |
720b47f2 AT |
455 | |
456 | ||
b7922338 | 457 | void write_int(int f,int32 x) |
720b47f2 | 458 | { |
8d9dc9f9 AT |
459 | char b[4]; |
460 | SIVAL(b,0,x); | |
4c36ddbe | 461 | writefd(f,b,4); |
720b47f2 AT |
462 | } |
463 | ||
71c46176 | 464 | void write_longint(int f, int64 x) |
3a6a366f AT |
465 | { |
466 | extern int remote_version; | |
467 | char b[8]; | |
3a6a366f AT |
468 | |
469 | if (remote_version < 16 || x <= 0x7FFFFFFF) { | |
470 | write_int(f, (int)x); | |
471 | return; | |
472 | } | |
473 | ||
474 | write_int(f, -1); | |
475 | SIVAL(b,0,(x&0xFFFFFFFF)); | |
476 | SIVAL(b,4,((x>>32)&0xFFFFFFFF)); | |
477 | ||
4c36ddbe | 478 | writefd(f,b,8); |
3a6a366f AT |
479 | } |
480 | ||
720b47f2 AT |
481 | void write_buf(int f,char *buf,int len) |
482 | { | |
4c36ddbe | 483 | writefd(f,buf,len); |
720b47f2 AT |
484 | } |
485 | ||
f0fca04e | 486 | /* write a string to the connection */ |
6e4fb64e | 487 | static void write_sbuf(int f,char *buf) |
f0fca04e AT |
488 | { |
489 | write_buf(f, buf, strlen(buf)); | |
490 | } | |
491 | ||
720b47f2 | 492 | |
182dca5c AT |
493 | void write_byte(int f,unsigned char c) |
494 | { | |
f0fca04e | 495 | write_buf(f,(char *)&c,1); |
182dca5c AT |
496 | } |
497 | ||
f0fca04e AT |
498 | int read_line(int f, char *buf, int maxlen) |
499 | { | |
528bfcd7 AT |
500 | eof_error = 0; |
501 | ||
f0fca04e | 502 | while (maxlen) { |
528bfcd7 | 503 | buf[0] = 0; |
f0fca04e | 504 | read_buf(f, buf, 1); |
528bfcd7 | 505 | if (buf[0] == 0) return 0; |
f0fca04e AT |
506 | if (buf[0] == '\n') { |
507 | buf[0] = 0; | |
508 | break; | |
509 | } | |
510 | if (buf[0] != '\r') { | |
511 | buf++; | |
512 | maxlen--; | |
513 | } | |
514 | } | |
515 | if (maxlen == 0) { | |
516 | *buf = 0; | |
517 | return 0; | |
518 | } | |
528bfcd7 AT |
519 | |
520 | eof_error = 1; | |
521 | ||
f0fca04e AT |
522 | return 1; |
523 | } | |
524 | ||
525 | ||
526 | void io_printf(int fd, const char *format, ...) | |
527 | { | |
528 | va_list ap; | |
529 | char buf[1024]; | |
530 | int len; | |
531 | ||
532 | va_start(ap, format); | |
e42c9458 | 533 | len = vslprintf(buf, sizeof(buf)-1, format, ap); |
f0fca04e AT |
534 | va_end(ap); |
535 | ||
536 | if (len < 0) exit_cleanup(1); | |
537 | ||
538 | write_sbuf(fd, buf); | |
539 | } | |
8d9dc9f9 AT |
540 | |
541 | ||
542 | /* setup for multiplexing an error stream with the data stream */ | |
543 | void io_start_multiplex_out(int fd) | |
544 | { | |
679e7657 AT |
545 | multiplex_out_fd = fd; |
546 | io_flush(); | |
8d9dc9f9 AT |
547 | io_start_buffering(fd); |
548 | io_multiplexing_out = 1; | |
549 | } | |
550 | ||
551 | /* setup for multiplexing an error stream with the data stream */ | |
552 | void io_start_multiplex_in(int fd) | |
553 | { | |
679e7657 AT |
554 | multiplex_in_fd = fd; |
555 | io_flush(); | |
8d9dc9f9 AT |
556 | if (read_buffer_len) { |
557 | fprintf(stderr,"ERROR: data in read buffer at mplx start\n"); | |
558 | exit_cleanup(1); | |
559 | } | |
560 | ||
561 | io_multiplexing_in = 1; | |
562 | } | |
563 | ||
564 | /* write an message to the error stream */ | |
565 | int io_multiplex_write(int f, char *buf, int len) | |
566 | { | |
567 | if (!io_multiplexing_out) return 0; | |
568 | ||
569 | io_flush(); | |
570 | ||
571 | SIVAL(io_buffer-4, 0, ((MPLEX_BASE + f)<<24) + len); | |
572 | memcpy(io_buffer, buf, len); | |
573 | ||
679e7657 | 574 | writefd_unbuffered(multiplex_out_fd, io_buffer-4, len+4); |
8d9dc9f9 AT |
575 | return 1; |
576 | } | |
577 | ||
578 | void io_close_input(int fd) | |
579 | { | |
580 | buffer_f_in = -1; | |
581 | } |