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aliguori6f97dba2008-10-31 18:49:55 +00001/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
Peter Maydelld38ea872016-01-29 17:50:05 +000024#include "qemu/osdep.h"
aliguori6f97dba2008-10-31 18:49:55 +000025#include "qemu-common.h"
Veronia Bahaaf348b6d2016-03-20 19:16:19 +020026#include "qemu/cutils.h"
Paolo Bonzini83c90892012-12-17 18:19:49 +010027#include "monitor/monitor.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010028#include "sysemu/sysemu.h"
Max Reitzda31d592016-03-16 19:54:32 +010029#include "sysemu/block-backend.h"
Markus Armbrusterd49b6832015-03-17 18:29:20 +010030#include "qemu/error-report.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010031#include "qemu/timer.h"
Paolo Bonzinidccfcd02013-04-08 16:55:25 +020032#include "sysemu/char.h"
aurel32cf3ebac2008-11-01 00:53:09 +000033#include "hw/usb.h"
Luiz Capitulinoc5a415a2011-09-14 16:05:49 -030034#include "qmp-commands.h"
Corey Minyardcfb429c2014-10-02 11:17:35 -050035#include "qapi/qmp-input-visitor.h"
36#include "qapi/qmp-output-visitor.h"
37#include "qapi-visit.h"
Daniel P. Berrangee9cf2fe2015-11-23 15:29:59 +000038#include "qemu/base64.h"
Daniel P. Berrange9894dc02016-01-19 11:14:29 +000039#include "io/channel-socket.h"
40#include "io/channel-file.h"
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +000041#include "io/channel-tls.h"
Pavel Dovgalyuk33577b42016-03-14 10:44:36 +030042#include "sysemu/replay.h"
aliguori6f97dba2008-10-31 18:49:55 +000043
aliguori6f97dba2008-10-31 18:49:55 +000044#include <zlib.h>
45
46#ifndef _WIN32
47#include <sys/times.h>
48#include <sys/wait.h>
49#include <termios.h>
50#include <sys/mman.h>
51#include <sys/ioctl.h>
blueswir124646c72008-11-07 16:55:48 +000052#include <sys/resource.h>
aliguori6f97dba2008-10-31 18:49:55 +000053#include <sys/socket.h>
54#include <netinet/in.h>
blueswir124646c72008-11-07 16:55:48 +000055#include <net/if.h>
blueswir124646c72008-11-07 16:55:48 +000056#include <arpa/inet.h>
aliguori6f97dba2008-10-31 18:49:55 +000057#include <netdb.h>
58#include <sys/select.h>
Juan Quintela71e72a12009-07-27 16:12:56 +020059#ifdef CONFIG_BSD
Michael Tokarev3294ce12012-06-02 23:43:33 +040060#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
61#include <dev/ppbus/ppi.h>
62#include <dev/ppbus/ppbconf.h>
63#elif defined(__DragonFly__)
64#include <dev/misc/ppi/ppi.h>
65#include <bus/ppbus/ppbconf.h>
66#endif
Aurelien Jarnobbe813a2009-11-30 15:42:59 +010067#else
aliguori6f97dba2008-10-31 18:49:55 +000068#ifdef __linux__
aliguori6f97dba2008-10-31 18:49:55 +000069#include <linux/ppdev.h>
70#include <linux/parport.h>
71#endif
72#ifdef __sun__
aliguori6f97dba2008-10-31 18:49:55 +000073#include <sys/ethernet.h>
74#include <sys/sockio.h>
75#include <netinet/arp.h>
76#include <netinet/in.h>
77#include <netinet/in_systm.h>
78#include <netinet/ip.h>
79#include <netinet/ip_icmp.h> // must come after ip.h
80#include <netinet/udp.h>
81#include <netinet/tcp.h>
aliguori6f97dba2008-10-31 18:49:55 +000082#endif
83#endif
84#endif
85
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010086#include "qemu/sockets.h"
Alon Levycbcc6332011-01-19 10:49:50 +020087#include "ui/qemu-spice.h"
aliguori6f97dba2008-10-31 18:49:55 +000088
Amit Shah9bd78542009-11-03 19:59:54 +053089#define READ_BUF_LEN 4096
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +030090#define READ_RETRIES 10
Michael S. Tsirkinc4095722014-11-02 18:48:32 +020091#define TCP_MAX_FDS 16
Amit Shah9bd78542009-11-03 19:59:54 +053092
aliguori6f97dba2008-10-31 18:49:55 +000093/***********************************************************/
Corey Minyardcfb429c2014-10-02 11:17:35 -050094/* Socket address helpers */
Corey Minyardcfb429c2014-10-02 11:17:35 -050095
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +000096static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr,
97 bool is_listen, bool is_telnet)
Corey Minyard16cc4ff2014-10-02 11:17:36 -050098{
Eric Blake130257d2015-10-26 16:34:57 -060099 switch (addr->type) {
Corey Minyard16cc4ff2014-10-02 11:17:36 -0500100 case SOCKET_ADDRESS_KIND_INET:
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +0000101 return g_strdup_printf("%s%s:%s:%s%s", prefix,
Eric Blake32bafa82016-03-17 16:48:37 -0600102 is_telnet ? "telnet" : "tcp",
103 addr->u.inet.data->host,
104 addr->u.inet.data->port,
105 is_listen ? ",server" : "");
Corey Minyard16cc4ff2014-10-02 11:17:36 -0500106 break;
107 case SOCKET_ADDRESS_KIND_UNIX:
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +0000108 return g_strdup_printf("%sunix:%s%s", prefix,
Eric Blake32bafa82016-03-17 16:48:37 -0600109 addr->u.q_unix.data->path,
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +0000110 is_listen ? ",server" : "");
Corey Minyard16cc4ff2014-10-02 11:17:36 -0500111 break;
112 case SOCKET_ADDRESS_KIND_FD:
Eric Blake32bafa82016-03-17 16:48:37 -0600113 return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd.data->str,
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +0000114 is_listen ? ",server" : "");
Corey Minyard16cc4ff2014-10-02 11:17:36 -0500115 break;
116 default:
117 abort();
118 }
119}
120
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +0000121static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len,
122 struct sockaddr_storage *ps, socklen_t ps_len,
123 bool is_listen, bool is_telnet)
Corey Minyard16cc4ff2014-10-02 11:17:36 -0500124{
Corey Minyard01ca5192014-10-02 11:17:38 -0500125 char shost[NI_MAXHOST], sserv[NI_MAXSERV];
126 char phost[NI_MAXHOST], pserv[NI_MAXSERV];
Corey Minyard16cc4ff2014-10-02 11:17:36 -0500127 const char *left = "", *right = "";
128
129 switch (ss->ss_family) {
130#ifndef _WIN32
131 case AF_UNIX:
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +0000132 return g_strdup_printf("unix:%s%s",
133 ((struct sockaddr_un *)(ss))->sun_path,
134 is_listen ? ",server" : "");
Corey Minyard16cc4ff2014-10-02 11:17:36 -0500135#endif
136 case AF_INET6:
137 left = "[";
138 right = "]";
139 /* fall through */
140 case AF_INET:
Corey Minyard01ca5192014-10-02 11:17:38 -0500141 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
142 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
143 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
144 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +0000145 return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
146 is_telnet ? "telnet" : "tcp",
147 left, shost, right, sserv,
148 is_listen ? ",server" : "",
149 left, phost, right, pserv);
Corey Minyard16cc4ff2014-10-02 11:17:36 -0500150
151 default:
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +0000152 return g_strdup_printf("unknown");
Corey Minyard16cc4ff2014-10-02 11:17:36 -0500153 }
154}
155
Corey Minyardcfb429c2014-10-02 11:17:35 -0500156/***********************************************************/
aliguori6f97dba2008-10-31 18:49:55 +0000157/* character device */
158
Blue Swirl72cf2d42009-09-12 07:36:22 +0000159static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
160 QTAILQ_HEAD_INITIALIZER(chardevs);
aliguori2970a6c2009-03-05 22:59:58 +0000161
Daniel P. Berranged0d77082016-01-11 12:44:41 +0000162static void qemu_chr_free_common(CharDriverState *chr);
163
164CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp)
Paolo Bonzinidb39fcf2014-06-18 08:43:55 +0200165{
166 CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
Paolo Bonzinif3db17b2014-06-25 09:04:57 +0200167 qemu_mutex_init(&chr->chr_write_lock);
Daniel P. Berranged0d77082016-01-11 12:44:41 +0000168
169 if (backend->has_logfile) {
170 int flags = O_WRONLY | O_CREAT;
171 if (backend->has_logappend &&
172 backend->logappend) {
173 flags |= O_APPEND;
174 } else {
175 flags |= O_TRUNC;
176 }
177 chr->logfd = qemu_open(backend->logfile, flags, 0666);
178 if (chr->logfd < 0) {
179 error_setg_errno(errp, errno,
180 "Unable to open logfile %s",
181 backend->logfile);
182 g_free(chr);
183 return NULL;
184 }
185 } else {
186 chr->logfd = -1;
187 }
188
Paolo Bonzinidb39fcf2014-06-18 08:43:55 +0200189 return chr;
190}
191
Hans de Goedea425d232011-11-19 10:22:43 +0100192void qemu_chr_be_event(CharDriverState *s, int event)
aliguori6f97dba2008-10-31 18:49:55 +0000193{
Alexander Graf73cdf3f2010-04-01 18:42:39 +0200194 /* Keep track if the char device is open */
195 switch (event) {
196 case CHR_EVENT_OPENED:
Hans de Goede16665b92013-03-26 11:07:53 +0100197 s->be_open = 1;
Alexander Graf73cdf3f2010-04-01 18:42:39 +0200198 break;
199 case CHR_EVENT_CLOSED:
Hans de Goede16665b92013-03-26 11:07:53 +0100200 s->be_open = 0;
Alexander Graf73cdf3f2010-04-01 18:42:39 +0200201 break;
202 }
203
aliguori6f97dba2008-10-31 18:49:55 +0000204 if (!s->chr_event)
205 return;
206 s->chr_event(s->handler_opaque, event);
207}
208
Hans de Goedefee204f2013-03-26 11:07:54 +0100209void qemu_chr_be_generic_open(CharDriverState *s)
aliguori6f97dba2008-10-31 18:49:55 +0000210{
Michael Rothbd5c51e2013-06-07 15:19:53 -0500211 qemu_chr_be_event(s, CHR_EVENT_OPENED);
aliguori6f97dba2008-10-31 18:49:55 +0000212}
213
Daniel P. Berranged0d77082016-01-11 12:44:41 +0000214
215/* Not reporting errors from writing to logfile, as logs are
216 * defined to be "best effort" only */
217static void qemu_chr_fe_write_log(CharDriverState *s,
218 const uint8_t *buf, size_t len)
219{
220 size_t done = 0;
221 ssize_t ret;
222
223 if (s->logfd < 0) {
224 return;
225 }
226
227 while (done < len) {
Daniel P. Berrange53628ef2016-03-31 16:29:27 +0100228 retry:
229 ret = write(s->logfd, buf + done, len - done);
230 if (ret == -1 && errno == EAGAIN) {
231 g_usleep(100);
232 goto retry;
233 }
Daniel P. Berranged0d77082016-01-11 12:44:41 +0000234
235 if (ret <= 0) {
236 return;
237 }
238 done += ret;
239 }
240}
241
Pavel Dovgalyuk33577b42016-03-14 10:44:36 +0300242static int qemu_chr_fe_write_buffer(CharDriverState *s, const uint8_t *buf, int len, int *offset)
aliguori6f97dba2008-10-31 18:49:55 +0000243{
Igor Mammedov09313042014-06-25 10:00:41 +0200244 int res = 0;
Pavel Dovgalyuk33577b42016-03-14 10:44:36 +0300245 *offset = 0;
Anthony Liguoricd187202013-03-26 10:04:17 -0500246
Paolo Bonzini9005b2a2014-06-18 08:43:58 +0200247 qemu_mutex_lock(&s->chr_write_lock);
Pavel Dovgalyuk33577b42016-03-14 10:44:36 +0300248 while (*offset < len) {
Daniel P. Berrange53628ef2016-03-31 16:29:27 +0100249 retry:
250 res = s->chr_write(s, buf + *offset, len - *offset);
251 if (res < 0 && errno == EAGAIN) {
252 g_usleep(100);
253 goto retry;
254 }
Anthony Liguoricd187202013-03-26 10:04:17 -0500255
Paolo Bonzini9005b2a2014-06-18 08:43:58 +0200256 if (res <= 0) {
Anthony Liguoricd187202013-03-26 10:04:17 -0500257 break;
258 }
259
Pavel Dovgalyuk33577b42016-03-14 10:44:36 +0300260 *offset += res;
Anthony Liguoricd187202013-03-26 10:04:17 -0500261 }
Pavel Dovgalyuk33577b42016-03-14 10:44:36 +0300262 if (*offset > 0) {
263 qemu_chr_fe_write_log(s, buf, *offset);
264 }
265 qemu_mutex_unlock(&s->chr_write_lock);
266
267 return res;
268}
269
270int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
271{
272 int ret;
273
274 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
275 int offset;
276 replay_char_write_event_load(&ret, &offset);
277 assert(offset <= len);
278 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
279 return ret;
280 }
281
282 qemu_mutex_lock(&s->chr_write_lock);
283 ret = s->chr_write(s, buf, len);
284
285 if (ret > 0) {
286 qemu_chr_fe_write_log(s, buf, ret);
Daniel P. Berranged0d77082016-01-11 12:44:41 +0000287 }
288
Paolo Bonzini9005b2a2014-06-18 08:43:58 +0200289 qemu_mutex_unlock(&s->chr_write_lock);
Pavel Dovgalyuk33577b42016-03-14 10:44:36 +0300290
291 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
292 replay_char_write_event_save(ret, ret < 0 ? 0 : ret);
293 }
294
295 return ret;
296}
297
298int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
299{
300 int offset;
301 int res;
302
303 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
304 replay_char_write_event_load(&res, &offset);
305 assert(offset <= len);
306 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
307 return res;
308 }
309
310 res = qemu_chr_fe_write_buffer(s, buf, len, &offset);
311
312 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
313 replay_char_write_event_save(res, offset);
314 }
Anthony Liguoricd187202013-03-26 10:04:17 -0500315
Paolo Bonzini9005b2a2014-06-18 08:43:58 +0200316 if (res < 0) {
317 return res;
318 }
Anthony Liguoricd187202013-03-26 10:04:17 -0500319 return offset;
320}
321
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +0300322int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
323{
324 int offset = 0, counter = 10;
325 int res;
326
327 if (!s->chr_sync_read) {
328 return 0;
329 }
Pavel Dovgalyuk33577b42016-03-14 10:44:36 +0300330
331 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
332 return replay_char_read_all_load(buf);
333 }
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +0300334
335 while (offset < len) {
Daniel P. Berrange53628ef2016-03-31 16:29:27 +0100336 retry:
337 res = s->chr_sync_read(s, buf + offset, len - offset);
338 if (res == -1 && errno == EAGAIN) {
339 g_usleep(100);
340 goto retry;
341 }
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +0300342
343 if (res == 0) {
344 break;
345 }
346
347 if (res < 0) {
Pavel Dovgalyuk33577b42016-03-14 10:44:36 +0300348 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
349 replay_char_read_all_save_error(res);
350 }
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +0300351 return res;
352 }
353
354 offset += res;
355
356 if (!counter--) {
357 break;
358 }
359 }
360
Pavel Dovgalyuk33577b42016-03-14 10:44:36 +0300361 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
362 replay_char_read_all_save_buf(buf, offset);
363 }
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +0300364 return offset;
365}
366
Anthony Liguori41084f12011-08-15 11:17:34 -0500367int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
aliguori6f97dba2008-10-31 18:49:55 +0000368{
Pavel Dovgalyuk33577b42016-03-14 10:44:36 +0300369 int res;
370 if (!s->chr_ioctl || s->replay) {
371 res = -ENOTSUP;
372 } else {
373 res = s->chr_ioctl(s, cmd, arg);
374 }
375
376 return res;
aliguori6f97dba2008-10-31 18:49:55 +0000377}
378
Anthony Liguori909cda12011-08-15 11:17:31 -0500379int qemu_chr_be_can_write(CharDriverState *s)
aliguori6f97dba2008-10-31 18:49:55 +0000380{
381 if (!s->chr_can_read)
382 return 0;
383 return s->chr_can_read(s->handler_opaque);
384}
385
Pavel Dovgalyuk33577b42016-03-14 10:44:36 +0300386void qemu_chr_be_write_impl(CharDriverState *s, uint8_t *buf, int len)
aliguori6f97dba2008-10-31 18:49:55 +0000387{
Stefan Weilac310732012-04-19 22:27:14 +0200388 if (s->chr_read) {
389 s->chr_read(s->handler_opaque, buf, len);
390 }
aliguori6f97dba2008-10-31 18:49:55 +0000391}
392
Pavel Dovgalyuk33577b42016-03-14 10:44:36 +0300393void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
394{
395 if (s->replay) {
396 if (replay_mode == REPLAY_MODE_PLAY) {
397 return;
398 }
399 replay_chr_be_write(s, buf, len);
400 } else {
401 qemu_chr_be_write_impl(s, buf, len);
402 }
403}
404
Anthony Liguori74c0d6f2011-08-15 11:17:39 -0500405int qemu_chr_fe_get_msgfd(CharDriverState *s)
Mark McLoughlin7d174052009-07-22 09:11:39 +0100406{
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +0300407 int fd;
Pavel Dovgalyuk33577b42016-03-14 10:44:36 +0300408 int res = (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
409 if (s->replay) {
410 fprintf(stderr,
411 "Replay: get msgfd is not supported for serial devices yet\n");
412 exit(1);
413 }
414 return res;
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +0300415}
416
417int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
418{
419 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
Mark McLoughlin7d174052009-07-22 09:11:39 +0100420}
421
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +0300422int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
423{
424 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
425}
426
Daniel P. Berrange13661082011-06-23 13:31:42 +0100427int qemu_chr_add_client(CharDriverState *s, int fd)
428{
429 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
430}
431
aliguori6f97dba2008-10-31 18:49:55 +0000432void qemu_chr_accept_input(CharDriverState *s)
433{
434 if (s->chr_accept_input)
435 s->chr_accept_input(s);
Jan Kiszka98c8ee12012-03-16 13:18:00 +0100436 qemu_notify_event();
aliguori6f97dba2008-10-31 18:49:55 +0000437}
438
Anthony Liguorie7e71b02011-08-15 11:17:29 -0500439void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
aliguori6f97dba2008-10-31 18:49:55 +0000440{
Amit Shah9bd78542009-11-03 19:59:54 +0530441 char buf[READ_BUF_LEN];
aliguori6f97dba2008-10-31 18:49:55 +0000442 va_list ap;
443 va_start(ap, fmt);
444 vsnprintf(buf, sizeof(buf), fmt, ap);
Anthony Liguori2cc6e0a2011-08-15 11:17:28 -0500445 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
aliguori6f97dba2008-10-31 18:49:55 +0000446 va_end(ap);
447}
448
Amit Shah386a5a12013-08-28 15:24:05 +0530449static void remove_fd_in_watch(CharDriverState *chr);
450
aliguori6f97dba2008-10-31 18:49:55 +0000451void qemu_chr_add_handlers(CharDriverState *s,
Juan Quintela7b27a762010-03-11 17:55:39 +0100452 IOCanReadHandler *fd_can_read,
aliguori6f97dba2008-10-31 18:49:55 +0000453 IOReadHandler *fd_read,
454 IOEventHandler *fd_event,
455 void *opaque)
456{
Hans de Goede19083222013-03-26 11:07:56 +0100457 int fe_open;
458
Amit Shahda7d9982011-04-25 15:18:22 +0530459 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
Hans de Goede19083222013-03-26 11:07:56 +0100460 fe_open = 0;
Amit Shah386a5a12013-08-28 15:24:05 +0530461 remove_fd_in_watch(s);
Hans de Goede19083222013-03-26 11:07:56 +0100462 } else {
463 fe_open = 1;
Amit Shah2d6c1ef2011-02-10 12:55:20 +0530464 }
aliguori6f97dba2008-10-31 18:49:55 +0000465 s->chr_can_read = fd_can_read;
466 s->chr_read = fd_read;
467 s->chr_event = fd_event;
468 s->handler_opaque = opaque;
Gal Hammerac1b84d2014-02-25 12:12:35 +0200469 if (fe_open && s->chr_update_read_handler)
aliguori6f97dba2008-10-31 18:49:55 +0000470 s->chr_update_read_handler(s);
Alexander Graf73cdf3f2010-04-01 18:42:39 +0200471
Hans de Goede19083222013-03-26 11:07:56 +0100472 if (!s->explicit_fe_open) {
Hans de Goede8e25daa2013-03-26 11:07:57 +0100473 qemu_chr_fe_set_open(s, fe_open);
Hans de Goede19083222013-03-26 11:07:56 +0100474 }
475
Alexander Graf73cdf3f2010-04-01 18:42:39 +0200476 /* We're connecting to an already opened device, so let's make sure we
477 also get the open event */
Hans de Goedea59bcd32013-03-26 11:08:00 +0100478 if (fe_open && s->be_open) {
Hans de Goedefee204f2013-03-26 11:07:54 +0100479 qemu_chr_be_generic_open(s);
Alexander Graf73cdf3f2010-04-01 18:42:39 +0200480 }
aliguori6f97dba2008-10-31 18:49:55 +0000481}
482
483static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
484{
485 return len;
486}
487
Paolo Bonzini0d649922015-09-29 15:24:29 +0200488static CharDriverState *qemu_chr_open_null(const char *id,
489 ChardevBackend *backend,
490 ChardevReturn *ret,
491 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +0000492{
493 CharDriverState *chr;
Eric Blake32bafa82016-03-17 16:48:37 -0600494 ChardevCommon *common = backend->u.null.data;
aliguori6f97dba2008-10-31 18:49:55 +0000495
Daniel P. Berranged0d77082016-01-11 12:44:41 +0000496 chr = qemu_chr_alloc(common, errp);
497 if (!chr) {
498 return NULL;
499 }
aliguori6f97dba2008-10-31 18:49:55 +0000500 chr->chr_write = null_chr_write;
Michael Rothbd5c51e2013-06-07 15:19:53 -0500501 chr->explicit_be_open = true;
Markus Armbruster1f514702012-02-07 15:09:08 +0100502 return chr;
aliguori6f97dba2008-10-31 18:49:55 +0000503}
504
505/* MUX driver for serial I/O splitting */
aliguori6f97dba2008-10-31 18:49:55 +0000506#define MAX_MUX 4
507#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
508#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
509typedef struct {
Juan Quintela7b27a762010-03-11 17:55:39 +0100510 IOCanReadHandler *chr_can_read[MAX_MUX];
aliguori6f97dba2008-10-31 18:49:55 +0000511 IOReadHandler *chr_read[MAX_MUX];
512 IOEventHandler *chr_event[MAX_MUX];
513 void *ext_opaque[MAX_MUX];
514 CharDriverState *drv;
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200515 int focus;
aliguori6f97dba2008-10-31 18:49:55 +0000516 int mux_cnt;
517 int term_got_escape;
518 int max_size;
aliguoria80bf992009-03-05 23:00:02 +0000519 /* Intermediate input buffer allows to catch escape sequences even if the
520 currently active device is not accepting any input - but only until it
521 is full as well. */
522 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
523 int prod[MAX_MUX];
524 int cons[MAX_MUX];
Jan Kiszka2d229592009-06-15 22:25:30 +0200525 int timestamps;
Paolo Bonzini9005b2a2014-06-18 08:43:58 +0200526
527 /* Protected by the CharDriverState chr_write_lock. */
Jan Kiszka4ab312f2009-06-15 22:25:34 +0200528 int linestart;
Jan Kiszka2d229592009-06-15 22:25:30 +0200529 int64_t timestamps_start;
aliguori6f97dba2008-10-31 18:49:55 +0000530} MuxDriver;
531
532
Paolo Bonzini9005b2a2014-06-18 08:43:58 +0200533/* Called with chr_write_lock held. */
aliguori6f97dba2008-10-31 18:49:55 +0000534static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
535{
536 MuxDriver *d = chr->opaque;
537 int ret;
Jan Kiszka2d229592009-06-15 22:25:30 +0200538 if (!d->timestamps) {
Paolo Bonzini6975b712014-06-18 08:43:56 +0200539 ret = qemu_chr_fe_write(d->drv, buf, len);
aliguori6f97dba2008-10-31 18:49:55 +0000540 } else {
541 int i;
542
543 ret = 0;
Jan Kiszka4ab312f2009-06-15 22:25:34 +0200544 for (i = 0; i < len; i++) {
545 if (d->linestart) {
aliguori6f97dba2008-10-31 18:49:55 +0000546 char buf1[64];
547 int64_t ti;
548 int secs;
549
Alex Blighbc72ad62013-08-21 16:03:08 +0100550 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
Jan Kiszka2d229592009-06-15 22:25:30 +0200551 if (d->timestamps_start == -1)
552 d->timestamps_start = ti;
553 ti -= d->timestamps_start;
aliguoria4bb1db2009-01-22 17:15:16 +0000554 secs = ti / 1000;
aliguori6f97dba2008-10-31 18:49:55 +0000555 snprintf(buf1, sizeof(buf1),
556 "[%02d:%02d:%02d.%03d] ",
557 secs / 3600,
558 (secs / 60) % 60,
559 secs % 60,
aliguoria4bb1db2009-01-22 17:15:16 +0000560 (int)(ti % 1000));
Paolo Bonzini6975b712014-06-18 08:43:56 +0200561 qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
Jan Kiszka4ab312f2009-06-15 22:25:34 +0200562 d->linestart = 0;
563 }
Paolo Bonzini6975b712014-06-18 08:43:56 +0200564 ret += qemu_chr_fe_write(d->drv, buf+i, 1);
Jan Kiszka4ab312f2009-06-15 22:25:34 +0200565 if (buf[i] == '\n') {
566 d->linestart = 1;
aliguori6f97dba2008-10-31 18:49:55 +0000567 }
568 }
569 }
570 return ret;
571}
572
573static const char * const mux_help[] = {
574 "% h print this help\n\r",
575 "% x exit emulator\n\r",
576 "% s save disk data back to file (if -snapshot)\n\r",
Gonglei86d10322014-11-15 18:06:46 +0800577 "% t toggle console timestamps\n\r",
aliguori6f97dba2008-10-31 18:49:55 +0000578 "% b send break (magic sysrq)\n\r",
579 "% c switch between console and monitor\n\r",
580 "% % sends %\n\r",
581 NULL
582};
583
584int term_escape_char = 0x01; /* ctrl-a is used for escape */
585static void mux_print_help(CharDriverState *chr)
586{
587 int i, j;
588 char ebuf[15] = "Escape-Char";
589 char cbuf[50] = "\n\r";
590
591 if (term_escape_char > 0 && term_escape_char < 26) {
592 snprintf(cbuf, sizeof(cbuf), "\n\r");
593 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
594 } else {
595 snprintf(cbuf, sizeof(cbuf),
596 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
597 term_escape_char);
598 }
Paolo Bonzini6975b712014-06-18 08:43:56 +0200599 qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf));
aliguori6f97dba2008-10-31 18:49:55 +0000600 for (i = 0; mux_help[i] != NULL; i++) {
601 for (j=0; mux_help[i][j] != '\0'; j++) {
602 if (mux_help[i][j] == '%')
Paolo Bonzini6975b712014-06-18 08:43:56 +0200603 qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
aliguori6f97dba2008-10-31 18:49:55 +0000604 else
Paolo Bonzini6975b712014-06-18 08:43:56 +0200605 qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1);
aliguori6f97dba2008-10-31 18:49:55 +0000606 }
607 }
608}
609
aliguori2724b182009-03-05 23:01:47 +0000610static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
611{
612 if (d->chr_event[mux_nr])
613 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
614}
615
aliguori6f97dba2008-10-31 18:49:55 +0000616static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
617{
618 if (d->term_got_escape) {
619 d->term_got_escape = 0;
620 if (ch == term_escape_char)
621 goto send_char;
622 switch(ch) {
623 case '?':
624 case 'h':
625 mux_print_help(chr);
626 break;
627 case 'x':
628 {
629 const char *term = "QEMU: Terminated\n\r";
Paolo Bonzini6975b712014-06-18 08:43:56 +0200630 qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term));
aliguori6f97dba2008-10-31 18:49:55 +0000631 exit(0);
632 break;
633 }
634 case 's':
Max Reitzda31d592016-03-16 19:54:32 +0100635 blk_commit_all();
aliguori6f97dba2008-10-31 18:49:55 +0000636 break;
637 case 'b':
Hans de Goedea425d232011-11-19 10:22:43 +0100638 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
aliguori6f97dba2008-10-31 18:49:55 +0000639 break;
640 case 'c':
641 /* Switch to the next registered device */
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200642 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
643 d->focus++;
644 if (d->focus >= d->mux_cnt)
645 d->focus = 0;
646 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
aliguori6f97dba2008-10-31 18:49:55 +0000647 break;
Jan Kiszka2d229592009-06-15 22:25:30 +0200648 case 't':
649 d->timestamps = !d->timestamps;
650 d->timestamps_start = -1;
Jan Kiszka4ab312f2009-06-15 22:25:34 +0200651 d->linestart = 0;
Jan Kiszka2d229592009-06-15 22:25:30 +0200652 break;
aliguori6f97dba2008-10-31 18:49:55 +0000653 }
654 } else if (ch == term_escape_char) {
655 d->term_got_escape = 1;
656 } else {
657 send_char:
658 return 1;
659 }
660 return 0;
661}
662
663static void mux_chr_accept_input(CharDriverState *chr)
664{
aliguori6f97dba2008-10-31 18:49:55 +0000665 MuxDriver *d = chr->opaque;
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200666 int m = d->focus;
aliguori6f97dba2008-10-31 18:49:55 +0000667
aliguoria80bf992009-03-05 23:00:02 +0000668 while (d->prod[m] != d->cons[m] &&
aliguori6f97dba2008-10-31 18:49:55 +0000669 d->chr_can_read[m] &&
670 d->chr_can_read[m](d->ext_opaque[m])) {
671 d->chr_read[m](d->ext_opaque[m],
aliguoria80bf992009-03-05 23:00:02 +0000672 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
aliguori6f97dba2008-10-31 18:49:55 +0000673 }
674}
675
676static int mux_chr_can_read(void *opaque)
677{
678 CharDriverState *chr = opaque;
679 MuxDriver *d = chr->opaque;
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200680 int m = d->focus;
aliguori6f97dba2008-10-31 18:49:55 +0000681
aliguoria80bf992009-03-05 23:00:02 +0000682 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
aliguori6f97dba2008-10-31 18:49:55 +0000683 return 1;
aliguoria80bf992009-03-05 23:00:02 +0000684 if (d->chr_can_read[m])
685 return d->chr_can_read[m](d->ext_opaque[m]);
aliguori6f97dba2008-10-31 18:49:55 +0000686 return 0;
687}
688
689static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
690{
691 CharDriverState *chr = opaque;
692 MuxDriver *d = chr->opaque;
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200693 int m = d->focus;
aliguori6f97dba2008-10-31 18:49:55 +0000694 int i;
695
696 mux_chr_accept_input (opaque);
697
698 for(i = 0; i < size; i++)
699 if (mux_proc_byte(chr, d, buf[i])) {
aliguoria80bf992009-03-05 23:00:02 +0000700 if (d->prod[m] == d->cons[m] &&
aliguori6f97dba2008-10-31 18:49:55 +0000701 d->chr_can_read[m] &&
702 d->chr_can_read[m](d->ext_opaque[m]))
703 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
704 else
aliguoria80bf992009-03-05 23:00:02 +0000705 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
aliguori6f97dba2008-10-31 18:49:55 +0000706 }
707}
708
709static void mux_chr_event(void *opaque, int event)
710{
711 CharDriverState *chr = opaque;
712 MuxDriver *d = chr->opaque;
713 int i;
714
715 /* Send the event to all registered listeners */
716 for (i = 0; i < d->mux_cnt; i++)
aliguori2724b182009-03-05 23:01:47 +0000717 mux_chr_send_event(d, i, event);
aliguori6f97dba2008-10-31 18:49:55 +0000718}
719
720static void mux_chr_update_read_handler(CharDriverState *chr)
721{
722 MuxDriver *d = chr->opaque;
723
724 if (d->mux_cnt >= MAX_MUX) {
725 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
726 return;
727 }
728 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
729 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
730 d->chr_read[d->mux_cnt] = chr->chr_read;
731 d->chr_event[d->mux_cnt] = chr->chr_event;
732 /* Fix up the real driver with mux routines */
733 if (d->mux_cnt == 0) {
734 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
735 mux_chr_event, chr);
736 }
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200737 if (d->focus != -1) {
738 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
Gerd Hoffmanna7aec5d2009-09-10 10:58:54 +0200739 }
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200740 d->focus = d->mux_cnt;
aliguori6f97dba2008-10-31 18:49:55 +0000741 d->mux_cnt++;
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200742 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
aliguori6f97dba2008-10-31 18:49:55 +0000743}
744
Michael Roth7b7ab182013-07-30 13:04:22 -0500745static bool muxes_realized;
746
747/**
748 * Called after processing of default and command-line-specified
749 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
750 * to a mux chardev. This is done here to ensure that
751 * output/prompts/banners are only displayed for the FE that has
752 * focus when initial command-line processing/machine init is
753 * completed.
754 *
755 * After this point, any new FE attached to any new or existing
756 * mux will receive CHR_EVENT_OPENED notifications for the BE
757 * immediately.
758 */
759static void muxes_realize_done(Notifier *notifier, void *unused)
760{
761 CharDriverState *chr;
762
763 QTAILQ_FOREACH(chr, &chardevs, next) {
764 if (chr->is_mux) {
765 MuxDriver *d = chr->opaque;
766 int i;
767
768 /* send OPENED to all already-attached FEs */
769 for (i = 0; i < d->mux_cnt; i++) {
770 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
771 }
772 /* mark mux as OPENED so any new FEs will immediately receive
773 * OPENED event
774 */
775 qemu_chr_be_generic_open(chr);
776 }
777 }
778 muxes_realized = true;
779}
780
781static Notifier muxes_realize_notify = {
782 .notify = muxes_realize_done,
783};
784
Kirill Batuzov3f0838a2014-07-04 16:43:15 +0400785static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
786{
787 MuxDriver *d = s->opaque;
788 return d->drv->chr_add_watch(d->drv, cond);
789}
790
Paolo Bonzini3c0e5a42015-09-29 15:27:24 +0200791static CharDriverState *qemu_chr_open_mux(const char *id,
792 ChardevBackend *backend,
793 ChardevReturn *ret, Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +0000794{
Eric Blake32bafa82016-03-17 16:48:37 -0600795 ChardevMux *mux = backend->u.mux.data;
Paolo Bonzini3c0e5a42015-09-29 15:27:24 +0200796 CharDriverState *chr, *drv;
aliguori6f97dba2008-10-31 18:49:55 +0000797 MuxDriver *d;
Eric Blakef194a1a2016-03-03 09:16:47 -0700798 ChardevCommon *common = qapi_ChardevMux_base(mux);
aliguori6f97dba2008-10-31 18:49:55 +0000799
Paolo Bonzini3c0e5a42015-09-29 15:27:24 +0200800 drv = qemu_chr_find(mux->chardev);
801 if (drv == NULL) {
802 error_setg(errp, "mux: base chardev %s not found", mux->chardev);
803 return NULL;
804 }
805
Daniel P. Berranged0d77082016-01-11 12:44:41 +0000806 chr = qemu_chr_alloc(common, errp);
807 if (!chr) {
808 return NULL;
809 }
Markus Armbruster2d528d42015-09-14 13:54:03 +0200810 d = g_new0(MuxDriver, 1);
aliguori6f97dba2008-10-31 18:49:55 +0000811
812 chr->opaque = d;
813 d->drv = drv;
Gerd Hoffmann799f1f22009-09-10 10:58:55 +0200814 d->focus = -1;
aliguori6f97dba2008-10-31 18:49:55 +0000815 chr->chr_write = mux_chr_write;
816 chr->chr_update_read_handler = mux_chr_update_read_handler;
817 chr->chr_accept_input = mux_chr_accept_input;
Hans de Goede7c32c4f2011-03-24 11:12:02 +0100818 /* Frontend guest-open / -close notification is not support with muxes */
Hans de Goede574b7112013-03-26 11:07:58 +0100819 chr->chr_set_fe_open = NULL;
Kirill Batuzov3f0838a2014-07-04 16:43:15 +0400820 if (drv->chr_add_watch) {
821 chr->chr_add_watch = mux_chr_add_watch;
822 }
Michael Roth7b7ab182013-07-30 13:04:22 -0500823 /* only default to opened state if we've realized the initial
824 * set of muxes
825 */
826 chr->explicit_be_open = muxes_realized ? 0 : 1;
827 chr->is_mux = 1;
Alexander Graf73cdf3f2010-04-01 18:42:39 +0200828
aliguori6f97dba2008-10-31 18:49:55 +0000829 return chr;
830}
831
832
Anthony Liguori96c63842013-03-05 23:21:18 +0530833typedef struct IOWatchPoll
834{
Paolo Bonzinid185c092013-04-05 17:59:33 +0200835 GSource parent;
836
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000837 QIOChannel *ioc;
Anthony Liguori96c63842013-03-05 23:21:18 +0530838 GSource *src;
Anthony Liguori96c63842013-03-05 23:21:18 +0530839
840 IOCanReadHandler *fd_can_read;
Paolo Bonzini1e885b22013-04-08 15:03:15 +0200841 GSourceFunc fd_read;
Anthony Liguori96c63842013-03-05 23:21:18 +0530842 void *opaque;
Anthony Liguori96c63842013-03-05 23:21:18 +0530843} IOWatchPoll;
844
Anthony Liguori96c63842013-03-05 23:21:18 +0530845static IOWatchPoll *io_watch_poll_from_source(GSource *source)
846{
Paolo Bonzinid185c092013-04-05 17:59:33 +0200847 return container_of(source, IOWatchPoll, parent);
Anthony Liguori96c63842013-03-05 23:21:18 +0530848}
849
850static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
851{
852 IOWatchPoll *iwp = io_watch_poll_from_source(source);
Paolo Bonzinid185c092013-04-05 17:59:33 +0200853 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
Paolo Bonzini1e885b22013-04-08 15:03:15 +0200854 bool was_active = iwp->src != NULL;
Paolo Bonzinid185c092013-04-05 17:59:33 +0200855 if (was_active == now_active) {
Anthony Liguori96c63842013-03-05 23:21:18 +0530856 return FALSE;
857 }
858
Paolo Bonzinid185c092013-04-05 17:59:33 +0200859 if (now_active) {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000860 iwp->src = qio_channel_create_watch(
861 iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
Paolo Bonzini1e885b22013-04-08 15:03:15 +0200862 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
Paolo Bonzinid185c092013-04-05 17:59:33 +0200863 g_source_attach(iwp->src, NULL);
864 } else {
Paolo Bonzini1e885b22013-04-08 15:03:15 +0200865 g_source_destroy(iwp->src);
866 g_source_unref(iwp->src);
867 iwp->src = NULL;
Paolo Bonzinid185c092013-04-05 17:59:33 +0200868 }
869 return FALSE;
Anthony Liguori96c63842013-03-05 23:21:18 +0530870}
871
872static gboolean io_watch_poll_check(GSource *source)
873{
Paolo Bonzinid185c092013-04-05 17:59:33 +0200874 return FALSE;
Anthony Liguori96c63842013-03-05 23:21:18 +0530875}
876
877static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
878 gpointer user_data)
879{
Paolo Bonzinid185c092013-04-05 17:59:33 +0200880 abort();
Anthony Liguori96c63842013-03-05 23:21:18 +0530881}
882
883static void io_watch_poll_finalize(GSource *source)
884{
Paolo Bonzini2b316772013-04-19 17:32:09 +0200885 /* Due to a glib bug, removing the last reference to a source
886 * inside a finalize callback causes recursive locking (and a
887 * deadlock). This is not a problem inside other callbacks,
888 * including dispatch callbacks, so we call io_remove_watch_poll
889 * to remove this source. At this point, iwp->src must
890 * be NULL, or we would leak it.
891 *
892 * This would be solved much more elegantly by child sources,
893 * but we support older glib versions that do not have them.
894 */
Anthony Liguori96c63842013-03-05 23:21:18 +0530895 IOWatchPoll *iwp = io_watch_poll_from_source(source);
Paolo Bonzini2b316772013-04-19 17:32:09 +0200896 assert(iwp->src == NULL);
Anthony Liguori96c63842013-03-05 23:21:18 +0530897}
898
899static GSourceFuncs io_watch_poll_funcs = {
900 .prepare = io_watch_poll_prepare,
901 .check = io_watch_poll_check,
902 .dispatch = io_watch_poll_dispatch,
903 .finalize = io_watch_poll_finalize,
904};
905
906/* Can only be used for read */
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000907static guint io_add_watch_poll(QIOChannel *ioc,
Anthony Liguori96c63842013-03-05 23:21:18 +0530908 IOCanReadHandler *fd_can_read,
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000909 QIOChannelFunc fd_read,
Anthony Liguori96c63842013-03-05 23:21:18 +0530910 gpointer user_data)
911{
912 IOWatchPoll *iwp;
Paolo Bonzini0ca5aa42013-04-10 15:23:27 +0200913 int tag;
Anthony Liguori96c63842013-03-05 23:21:18 +0530914
Paolo Bonzinid185c092013-04-05 17:59:33 +0200915 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
Anthony Liguori96c63842013-03-05 23:21:18 +0530916 iwp->fd_can_read = fd_can_read;
917 iwp->opaque = user_data;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000918 iwp->ioc = ioc;
Paolo Bonzini1e885b22013-04-08 15:03:15 +0200919 iwp->fd_read = (GSourceFunc) fd_read;
920 iwp->src = NULL;
Anthony Liguori96c63842013-03-05 23:21:18 +0530921
Paolo Bonzini0ca5aa42013-04-10 15:23:27 +0200922 tag = g_source_attach(&iwp->parent, NULL);
923 g_source_unref(&iwp->parent);
924 return tag;
Anthony Liguori96c63842013-03-05 23:21:18 +0530925}
926
Paolo Bonzini2b316772013-04-19 17:32:09 +0200927static void io_remove_watch_poll(guint tag)
928{
929 GSource *source;
930 IOWatchPoll *iwp;
931
932 g_return_if_fail (tag > 0);
933
934 source = g_main_context_find_source_by_id(NULL, tag);
935 g_return_if_fail (source != NULL);
936
937 iwp = io_watch_poll_from_source(source);
938 if (iwp->src) {
939 g_source_destroy(iwp->src);
940 g_source_unref(iwp->src);
941 iwp->src = NULL;
942 }
943 g_source_destroy(&iwp->parent);
944}
945
Amit Shah26da70c2013-08-28 15:23:37 +0530946static void remove_fd_in_watch(CharDriverState *chr)
947{
948 if (chr->fd_in_tag) {
949 io_remove_watch_poll(chr->fd_in_tag);
950 chr->fd_in_tag = 0;
951 }
952}
953
Anthony Liguori96c63842013-03-05 23:21:18 +0530954
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000955static int io_channel_send_full(QIOChannel *ioc,
956 const void *buf, size_t len,
957 int *fds, size_t nfds)
Anthony Liguori96c63842013-03-05 23:21:18 +0530958{
Laszlo Ersekac8c26f2013-07-16 20:19:40 +0200959 size_t offset = 0;
Anthony Liguori96c63842013-03-05 23:21:18 +0530960
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000961 while (offset < len) {
962 ssize_t ret = 0;
963 struct iovec iov = { .iov_base = (char *)buf + offset,
964 .iov_len = len - offset };
Anthony Liguori684a0962013-03-29 11:39:50 -0500965
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000966 ret = qio_channel_writev_full(
967 ioc, &iov, 1,
968 fds, nfds, NULL);
969 if (ret == QIO_CHANNEL_ERR_BLOCK) {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000970 if (offset) {
971 return offset;
972 }
973
Daniel P. Berrangee046fb42016-02-12 14:46:50 +0000974 errno = EAGAIN;
975 return -1;
976 } else if (ret < 0) {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000977 errno = EINVAL;
978 return -1;
979 }
980
981 offset += ret;
Anthony Liguori96c63842013-03-05 23:21:18 +0530982 }
Anthony Liguori684a0962013-03-29 11:39:50 -0500983
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000984 return offset;
985}
986
987
988#ifndef _WIN32
989static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
990{
991 return io_channel_send_full(ioc, buf, len, NULL, 0);
Anthony Liguori96c63842013-03-05 23:21:18 +0530992}
Anthony Liguori96c63842013-03-05 23:21:18 +0530993
Blue Swirl44ab9ed2013-03-09 09:56:04 +0000994
Anthony Liguoria29753f2013-03-05 23:21:19 +0530995typedef struct FDCharDriver {
996 CharDriverState *chr;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +0000997 QIOChannel *ioc_in, *ioc_out;
aliguori6f97dba2008-10-31 18:49:55 +0000998 int max_size;
999} FDCharDriver;
1000
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001001/* Called with chr_write_lock held. */
aliguori6f97dba2008-10-31 18:49:55 +00001002static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1003{
1004 FDCharDriver *s = chr->opaque;
Anthony Liguoria29753f2013-03-05 23:21:19 +05301005
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001006 return io_channel_send(s->ioc_out, buf, len);
Anthony Liguoria29753f2013-03-05 23:21:19 +05301007}
1008
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001009static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
Anthony Liguoria29753f2013-03-05 23:21:19 +05301010{
1011 CharDriverState *chr = opaque;
1012 FDCharDriver *s = chr->opaque;
1013 int len;
1014 uint8_t buf[READ_BUF_LEN];
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001015 ssize_t ret;
Anthony Liguoria29753f2013-03-05 23:21:19 +05301016
1017 len = sizeof(buf);
1018 if (len > s->max_size) {
1019 len = s->max_size;
1020 }
1021 if (len == 0) {
Paolo Bonzinicdbf6e12013-04-19 17:32:08 +02001022 return TRUE;
Anthony Liguoria29753f2013-03-05 23:21:19 +05301023 }
1024
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001025 ret = qio_channel_read(
1026 chan, (gchar *)buf, len, NULL);
1027 if (ret == 0) {
Amit Shah26da70c2013-08-28 15:23:37 +05301028 remove_fd_in_watch(chr);
Anthony Liguoria29753f2013-03-05 23:21:19 +05301029 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1030 return FALSE;
1031 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001032 if (ret > 0) {
1033 qemu_chr_be_write(chr, buf, ret);
Anthony Liguoria29753f2013-03-05 23:21:19 +05301034 }
1035
1036 return TRUE;
aliguori6f97dba2008-10-31 18:49:55 +00001037}
1038
1039static int fd_chr_read_poll(void *opaque)
1040{
1041 CharDriverState *chr = opaque;
1042 FDCharDriver *s = chr->opaque;
1043
Anthony Liguori909cda12011-08-15 11:17:31 -05001044 s->max_size = qemu_chr_be_can_write(chr);
aliguori6f97dba2008-10-31 18:49:55 +00001045 return s->max_size;
1046}
1047
Anthony Liguori23673ca2013-03-05 23:21:23 +05301048static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1049{
1050 FDCharDriver *s = chr->opaque;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001051 return qio_channel_create_watch(s->ioc_out, cond);
Anthony Liguori23673ca2013-03-05 23:21:23 +05301052}
1053
aliguori6f97dba2008-10-31 18:49:55 +00001054static void fd_chr_update_read_handler(CharDriverState *chr)
1055{
1056 FDCharDriver *s = chr->opaque;
1057
Amit Shah26da70c2013-08-28 15:23:37 +05301058 remove_fd_in_watch(chr);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001059 if (s->ioc_in) {
1060 chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
1061 fd_chr_read_poll,
Amit Shah7ba9add2013-08-28 15:18:29 +05301062 fd_chr_read, chr);
aliguori6f97dba2008-10-31 18:49:55 +00001063 }
1064}
1065
1066static void fd_chr_close(struct CharDriverState *chr)
1067{
1068 FDCharDriver *s = chr->opaque;
1069
Amit Shah26da70c2013-08-28 15:23:37 +05301070 remove_fd_in_watch(chr);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001071 if (s->ioc_in) {
1072 object_unref(OBJECT(s->ioc_in));
Anthony Liguoria29753f2013-03-05 23:21:19 +05301073 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001074 if (s->ioc_out) {
1075 object_unref(OBJECT(s->ioc_out));
aliguori6f97dba2008-10-31 18:49:55 +00001076 }
1077
Anthony Liguori7267c092011-08-20 22:09:37 -05001078 g_free(s);
Hans de Goedea425d232011-11-19 10:22:43 +01001079 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
aliguori6f97dba2008-10-31 18:49:55 +00001080}
1081
1082/* open a character device to a unix fd */
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001083static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out,
1084 ChardevCommon *backend, Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00001085{
1086 CharDriverState *chr;
1087 FDCharDriver *s;
1088
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001089 chr = qemu_chr_alloc(backend, errp);
1090 if (!chr) {
1091 return NULL;
1092 }
Markus Armbruster2d528d42015-09-14 13:54:03 +02001093 s = g_new0(FDCharDriver, 1);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001094 s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
1095 s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
Gonglei4ff12bd2014-08-11 17:34:20 +08001096 qemu_set_nonblock(fd_out);
Anthony Liguoria29753f2013-03-05 23:21:19 +05301097 s->chr = chr;
aliguori6f97dba2008-10-31 18:49:55 +00001098 chr->opaque = s;
Anthony Liguori23673ca2013-03-05 23:21:23 +05301099 chr->chr_add_watch = fd_chr_add_watch;
aliguori6f97dba2008-10-31 18:49:55 +00001100 chr->chr_write = fd_chr_write;
1101 chr->chr_update_read_handler = fd_chr_update_read_handler;
1102 chr->chr_close = fd_chr_close;
1103
aliguori6f97dba2008-10-31 18:49:55 +00001104 return chr;
1105}
1106
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02001107static CharDriverState *qemu_chr_open_pipe(const char *id,
1108 ChardevBackend *backend,
1109 ChardevReturn *ret,
1110 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00001111{
Eric Blake32bafa82016-03-17 16:48:37 -06001112 ChardevHostdev *opts = backend->u.pipe.data;
aliguori6f97dba2008-10-31 18:49:55 +00001113 int fd_in, fd_out;
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00001114 char *filename_in;
1115 char *filename_out;
Gerd Hoffmann548cbb32013-02-25 11:50:55 +01001116 const char *filename = opts->device;
Eric Blakef194a1a2016-03-03 09:16:47 -07001117 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
Gerd Hoffmann7d315442009-09-10 10:58:36 +02001118
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00001119
1120 filename_in = g_strdup_printf("%s.in", filename);
1121 filename_out = g_strdup_printf("%s.out", filename);
Kevin Wolf40ff6d72009-12-02 12:24:42 +01001122 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1123 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00001124 g_free(filename_in);
1125 g_free(filename_out);
aliguori6f97dba2008-10-31 18:49:55 +00001126 if (fd_in < 0 || fd_out < 0) {
1127 if (fd_in >= 0)
1128 close(fd_in);
1129 if (fd_out >= 0)
1130 close(fd_out);
Markus Armbrusterb181e042012-02-07 15:09:09 +01001131 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
Markus Armbrustera89dd6c2012-02-07 15:09:10 +01001132 if (fd_in < 0) {
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02001133 error_setg_file_open(errp, errno, filename);
Markus Armbruster1f514702012-02-07 15:09:08 +01001134 return NULL;
Markus Armbrustera89dd6c2012-02-07 15:09:10 +01001135 }
aliguori6f97dba2008-10-31 18:49:55 +00001136 }
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001137 return qemu_chr_open_fd(fd_in, fd_out, common, errp);
aliguori6f97dba2008-10-31 18:49:55 +00001138}
1139
aliguori6f97dba2008-10-31 18:49:55 +00001140/* init terminal so that we can grab keys */
1141static struct termios oldtty;
1142static int old_fd0_flags;
Li Liuc88930a2014-09-09 19:19:48 +08001143static bool stdio_in_use;
Paolo Bonzinibb002512010-12-23 13:42:50 +01001144static bool stdio_allow_signal;
Gal Hammere76d4422015-01-07 10:38:35 +02001145static bool stdio_echo_state;
1146
1147static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
aliguori6f97dba2008-10-31 18:49:55 +00001148
1149static void term_exit(void)
1150{
1151 tcsetattr (0, TCSANOW, &oldtty);
1152 fcntl(0, F_SETFL, old_fd0_flags);
1153}
1154
Gal Hammere76d4422015-01-07 10:38:35 +02001155static void term_stdio_handler(int sig)
1156{
1157 /* restore echo after resume from suspend. */
1158 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1159}
1160
Paolo Bonzinibb002512010-12-23 13:42:50 +01001161static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
aliguori6f97dba2008-10-31 18:49:55 +00001162{
1163 struct termios tty;
1164
Gal Hammere76d4422015-01-07 10:38:35 +02001165 stdio_echo_state = echo;
Paolo Bonzini03693642010-12-23 13:42:49 +01001166 tty = oldtty;
Paolo Bonzinibb002512010-12-23 13:42:50 +01001167 if (!echo) {
1168 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
aliguori6f97dba2008-10-31 18:49:55 +00001169 |INLCR|IGNCR|ICRNL|IXON);
Paolo Bonzinibb002512010-12-23 13:42:50 +01001170 tty.c_oflag |= OPOST;
1171 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1172 tty.c_cflag &= ~(CSIZE|PARENB);
1173 tty.c_cflag |= CS8;
1174 tty.c_cc[VMIN] = 1;
1175 tty.c_cc[VTIME] = 0;
1176 }
Paolo Bonzinibb002512010-12-23 13:42:50 +01001177 if (!stdio_allow_signal)
aliguori6f97dba2008-10-31 18:49:55 +00001178 tty.c_lflag &= ~ISIG;
aliguori6f97dba2008-10-31 18:49:55 +00001179
1180 tcsetattr (0, TCSANOW, &tty);
aliguori6f97dba2008-10-31 18:49:55 +00001181}
1182
1183static void qemu_chr_close_stdio(struct CharDriverState *chr)
1184{
1185 term_exit();
aliguori6f97dba2008-10-31 18:49:55 +00001186 fd_chr_close(chr);
1187}
1188
Paolo Bonzini8c84b252015-09-29 15:40:28 +02001189static CharDriverState *qemu_chr_open_stdio(const char *id,
1190 ChardevBackend *backend,
1191 ChardevReturn *ret,
1192 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00001193{
Eric Blake32bafa82016-03-17 16:48:37 -06001194 ChardevStdio *opts = backend->u.stdio.data;
aliguori6f97dba2008-10-31 18:49:55 +00001195 CharDriverState *chr;
Gal Hammere76d4422015-01-07 10:38:35 +02001196 struct sigaction act;
Eric Blakef194a1a2016-03-03 09:16:47 -07001197 ChardevCommon *common = qapi_ChardevStdio_base(opts);
aliguori6f97dba2008-10-31 18:49:55 +00001198
Michael Tokarevab51b1d2012-12-30 12:48:14 +04001199 if (is_daemonized()) {
Paolo Bonzini8c84b252015-09-29 15:40:28 +02001200 error_setg(errp, "cannot use stdio with -daemonize");
Michael Tokarevab51b1d2012-12-30 12:48:14 +04001201 return NULL;
1202 }
Li Liuc88930a2014-09-09 19:19:48 +08001203
1204 if (stdio_in_use) {
Paolo Bonzini8c84b252015-09-29 15:40:28 +02001205 error_setg(errp, "cannot use stdio by multiple character devices");
1206 return NULL;
Li Liuc88930a2014-09-09 19:19:48 +08001207 }
1208
1209 stdio_in_use = true;
Anthony Liguoried7a1542013-03-05 23:21:17 +05301210 old_fd0_flags = fcntl(0, F_GETFL);
Li Liuc88930a2014-09-09 19:19:48 +08001211 tcgetattr(0, &oldtty);
Gonglei4ff12bd2014-08-11 17:34:20 +08001212 qemu_set_nonblock(0);
Anthony Liguoried7a1542013-03-05 23:21:17 +05301213 atexit(term_exit);
Paolo Bonzini03693642010-12-23 13:42:49 +01001214
Gal Hammere76d4422015-01-07 10:38:35 +02001215 memset(&act, 0, sizeof(act));
1216 act.sa_handler = term_stdio_handler;
1217 sigaction(SIGCONT, &act, NULL);
1218
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001219 chr = qemu_chr_open_fd(0, 1, common, errp);
aliguori6f97dba2008-10-31 18:49:55 +00001220 chr->chr_close = qemu_chr_close_stdio;
Paolo Bonzinibb002512010-12-23 13:42:50 +01001221 chr->chr_set_echo = qemu_chr_set_echo_stdio;
Gerd Hoffmann7c358032013-02-21 12:34:58 +01001222 if (opts->has_signal) {
1223 stdio_allow_signal = opts->signal;
1224 }
Anthony Liguori15f31512011-08-15 11:17:35 -05001225 qemu_chr_fe_set_echo(chr, false);
aliguori6f97dba2008-10-31 18:49:55 +00001226
Markus Armbruster1f514702012-02-07 15:09:08 +01001227 return chr;
aliguori6f97dba2008-10-31 18:49:55 +00001228}
1229
aliguori6f97dba2008-10-31 18:49:55 +00001230#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
Aurelien Jarnoa167ba52009-11-29 18:00:41 +01001231 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1232 || defined(__GLIBC__)
aliguori6f97dba2008-10-31 18:49:55 +00001233
Paolo Bonzinid809ab92015-10-12 09:46:23 +02001234#define HAVE_CHARDEV_SERIAL 1
1235#define HAVE_CHARDEV_PTY 1
Gerd Hoffmanne5514982012-12-19 16:35:42 +01001236
aliguori6f97dba2008-10-31 18:49:55 +00001237typedef struct {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001238 QIOChannel *ioc;
aliguori6f97dba2008-10-31 18:49:55 +00001239 int read_bytes;
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001240
1241 /* Protected by the CharDriverState chr_write_lock. */
1242 int connected;
Anthony Liguori8aa33ca2013-03-05 23:21:26 +05301243 guint timer_tag;
Paolo Bonzini7b3621f2014-07-11 12:11:38 +02001244 guint open_tag;
aliguori6f97dba2008-10-31 18:49:55 +00001245} PtyCharDriver;
1246
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001247static void pty_chr_update_read_handler_locked(CharDriverState *chr);
aliguori6f97dba2008-10-31 18:49:55 +00001248static void pty_chr_state(CharDriverState *chr, int connected);
1249
Anthony Liguori8aa33ca2013-03-05 23:21:26 +05301250static gboolean pty_chr_timer(gpointer opaque)
1251{
1252 struct CharDriverState *chr = opaque;
1253 PtyCharDriver *s = chr->opaque;
1254
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001255 qemu_mutex_lock(&chr->chr_write_lock);
Hans de Goede79f20072013-04-25 13:53:02 +02001256 s->timer_tag = 0;
Paolo Bonzini7b3621f2014-07-11 12:11:38 +02001257 s->open_tag = 0;
Gerd Hoffmannb0d768c2013-08-22 11:43:58 +02001258 if (!s->connected) {
1259 /* Next poll ... */
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001260 pty_chr_update_read_handler_locked(chr);
Gerd Hoffmannb0d768c2013-08-22 11:43:58 +02001261 }
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001262 qemu_mutex_unlock(&chr->chr_write_lock);
Anthony Liguori8aa33ca2013-03-05 23:21:26 +05301263 return FALSE;
1264}
1265
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001266/* Called with chr_write_lock held. */
Anthony Liguori8aa33ca2013-03-05 23:21:26 +05301267static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1268{
1269 PtyCharDriver *s = chr->opaque;
1270
1271 if (s->timer_tag) {
1272 g_source_remove(s->timer_tag);
1273 s->timer_tag = 0;
1274 }
1275
1276 if (ms == 1000) {
1277 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1278 } else {
1279 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1280 }
1281}
1282
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001283/* Called with chr_write_lock held. */
1284static void pty_chr_update_read_handler_locked(CharDriverState *chr)
Paolo Bonzini1bb7fe72014-06-18 08:43:57 +02001285{
1286 PtyCharDriver *s = chr->opaque;
1287 GPollFD pfd;
Paolo Bonzinic1f24482015-12-01 11:27:00 +01001288 int rc;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001289 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
Paolo Bonzini1bb7fe72014-06-18 08:43:57 +02001290
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001291 pfd.fd = fioc->fd;
Paolo Bonzini1bb7fe72014-06-18 08:43:57 +02001292 pfd.events = G_IO_OUT;
1293 pfd.revents = 0;
Paolo Bonzinic1f24482015-12-01 11:27:00 +01001294 do {
1295 rc = g_poll(&pfd, 1, 0);
1296 } while (rc == -1 && errno == EINTR);
1297 assert(rc >= 0);
1298
Paolo Bonzini1bb7fe72014-06-18 08:43:57 +02001299 if (pfd.revents & G_IO_HUP) {
1300 pty_chr_state(chr, 0);
1301 } else {
1302 pty_chr_state(chr, 1);
1303 }
1304}
1305
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001306static void pty_chr_update_read_handler(CharDriverState *chr)
1307{
1308 qemu_mutex_lock(&chr->chr_write_lock);
1309 pty_chr_update_read_handler_locked(chr);
1310 qemu_mutex_unlock(&chr->chr_write_lock);
1311}
1312
1313/* Called with chr_write_lock held. */
aliguori6f97dba2008-10-31 18:49:55 +00001314static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1315{
1316 PtyCharDriver *s = chr->opaque;
1317
1318 if (!s->connected) {
1319 /* guest sends data, check for (re-)connect */
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001320 pty_chr_update_read_handler_locked(chr);
Sebastian Tanasecf7330c2014-07-28 13:39:14 +02001321 if (!s->connected) {
1322 return 0;
1323 }
aliguori6f97dba2008-10-31 18:49:55 +00001324 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001325 return io_channel_send(s->ioc, buf, len);
aliguori6f97dba2008-10-31 18:49:55 +00001326}
1327
Anthony Liguorie6a87ed2013-03-05 23:21:24 +05301328static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1329{
1330 PtyCharDriver *s = chr->opaque;
Paolo Bonzini62c339c2014-07-24 16:08:04 +02001331 if (!s->connected) {
1332 return NULL;
1333 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001334 return qio_channel_create_watch(s->ioc, cond);
Anthony Liguorie6a87ed2013-03-05 23:21:24 +05301335}
1336
aliguori6f97dba2008-10-31 18:49:55 +00001337static int pty_chr_read_poll(void *opaque)
1338{
1339 CharDriverState *chr = opaque;
1340 PtyCharDriver *s = chr->opaque;
1341
Anthony Liguori909cda12011-08-15 11:17:31 -05001342 s->read_bytes = qemu_chr_be_can_write(chr);
aliguori6f97dba2008-10-31 18:49:55 +00001343 return s->read_bytes;
1344}
1345
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001346static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
aliguori6f97dba2008-10-31 18:49:55 +00001347{
1348 CharDriverState *chr = opaque;
1349 PtyCharDriver *s = chr->opaque;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001350 gsize len;
Amit Shah9bd78542009-11-03 19:59:54 +05301351 uint8_t buf[READ_BUF_LEN];
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001352 ssize_t ret;
aliguori6f97dba2008-10-31 18:49:55 +00001353
1354 len = sizeof(buf);
1355 if (len > s->read_bytes)
1356 len = s->read_bytes;
Paolo Bonzinicdbf6e12013-04-19 17:32:08 +02001357 if (len == 0) {
1358 return TRUE;
1359 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001360 ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
1361 if (ret <= 0) {
aliguori6f97dba2008-10-31 18:49:55 +00001362 pty_chr_state(chr, 0);
Anthony Liguori093d3a22013-03-05 23:21:20 +05301363 return FALSE;
1364 } else {
aliguori6f97dba2008-10-31 18:49:55 +00001365 pty_chr_state(chr, 1);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001366 qemu_chr_be_write(chr, buf, ret);
aliguori6f97dba2008-10-31 18:49:55 +00001367 }
Anthony Liguori093d3a22013-03-05 23:21:20 +05301368 return TRUE;
aliguori6f97dba2008-10-31 18:49:55 +00001369}
1370
Paolo Bonzini7b3621f2014-07-11 12:11:38 +02001371static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1372{
1373 CharDriverState *chr = opaque;
1374 PtyCharDriver *s = chr->opaque;
1375
1376 s->open_tag = 0;
1377 qemu_chr_be_generic_open(chr);
1378 return FALSE;
1379}
1380
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001381/* Called with chr_write_lock held. */
aliguori6f97dba2008-10-31 18:49:55 +00001382static void pty_chr_state(CharDriverState *chr, int connected)
1383{
1384 PtyCharDriver *s = chr->opaque;
1385
1386 if (!connected) {
Paolo Bonzini7b3621f2014-07-11 12:11:38 +02001387 if (s->open_tag) {
1388 g_source_remove(s->open_tag);
1389 s->open_tag = 0;
1390 }
Amit Shah26da70c2013-08-28 15:23:37 +05301391 remove_fd_in_watch(chr);
aliguori6f97dba2008-10-31 18:49:55 +00001392 s->connected = 0;
aliguori6f97dba2008-10-31 18:49:55 +00001393 /* (re-)connect poll interval for idle guests: once per second.
1394 * We check more frequently in case the guests sends data to
1395 * the virtual device linked to our pty. */
Anthony Liguori8aa33ca2013-03-05 23:21:26 +05301396 pty_chr_rearm_timer(chr, 1000);
aliguori6f97dba2008-10-31 18:49:55 +00001397 } else {
Paolo Bonzini85a67692013-04-19 17:32:07 +02001398 if (s->timer_tag) {
1399 g_source_remove(s->timer_tag);
1400 s->timer_tag = 0;
1401 }
1402 if (!s->connected) {
Paolo Bonzini7b3621f2014-07-11 12:11:38 +02001403 g_assert(s->open_tag == 0);
Paolo Bonzini85a67692013-04-19 17:32:07 +02001404 s->connected = 1;
Paolo Bonzini7b3621f2014-07-11 12:11:38 +02001405 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
Gal Hammerac1b84d2014-02-25 12:12:35 +02001406 }
1407 if (!chr->fd_in_tag) {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001408 chr->fd_in_tag = io_add_watch_poll(s->ioc,
1409 pty_chr_read_poll,
Amit Shah7ba9add2013-08-28 15:18:29 +05301410 pty_chr_read, chr);
Paolo Bonzini85a67692013-04-19 17:32:07 +02001411 }
aliguori6f97dba2008-10-31 18:49:55 +00001412 }
1413}
1414
aliguori6f97dba2008-10-31 18:49:55 +00001415static void pty_chr_close(struct CharDriverState *chr)
1416{
1417 PtyCharDriver *s = chr->opaque;
1418
Paolo Bonzini7b3621f2014-07-11 12:11:38 +02001419 qemu_mutex_lock(&chr->chr_write_lock);
1420 pty_chr_state(chr, 0);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001421 object_unref(OBJECT(s->ioc));
Anthony Liguori8aa33ca2013-03-05 23:21:26 +05301422 if (s->timer_tag) {
1423 g_source_remove(s->timer_tag);
Paolo Bonzini910b6362013-04-19 17:32:06 +02001424 s->timer_tag = 0;
Anthony Liguori8aa33ca2013-03-05 23:21:26 +05301425 }
Paolo Bonzini7b3621f2014-07-11 12:11:38 +02001426 qemu_mutex_unlock(&chr->chr_write_lock);
Anthony Liguori7267c092011-08-20 22:09:37 -05001427 g_free(s);
Hans de Goedea425d232011-11-19 10:22:43 +01001428 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
aliguori6f97dba2008-10-31 18:49:55 +00001429}
1430
Gerd Hoffmanne68c5952013-02-25 10:16:46 +01001431static CharDriverState *qemu_chr_open_pty(const char *id,
Paolo Bonzinic2e75a42015-09-29 15:23:42 +02001432 ChardevBackend *backend,
1433 ChardevReturn *ret,
1434 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00001435{
1436 CharDriverState *chr;
1437 PtyCharDriver *s;
Gerd Hoffmanne68c5952013-02-25 10:16:46 +01001438 int master_fd, slave_fd;
aliguori6f97dba2008-10-31 18:49:55 +00001439 char pty_name[PATH_MAX];
Eric Blake32bafa82016-03-17 16:48:37 -06001440 ChardevCommon *common = backend->u.pty.data;
aliguori6f97dba2008-10-31 18:49:55 +00001441
Michael Tokarev4efeabb2013-06-05 18:44:54 +04001442 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1443 if (master_fd < 0) {
Paolo Bonzinic2e75a42015-09-29 15:23:42 +02001444 error_setg_errno(errp, errno, "Failed to create PTY");
Markus Armbruster1f514702012-02-07 15:09:08 +01001445 return NULL;
aliguori6f97dba2008-10-31 18:49:55 +00001446 }
1447
Paolo Bonzini837a1832016-02-12 16:05:10 +01001448 close(slave_fd);
Don Slutzfac66882014-12-22 10:04:00 -05001449 qemu_set_nonblock(master_fd);
aliguori6f97dba2008-10-31 18:49:55 +00001450
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001451 chr = qemu_chr_alloc(common, errp);
1452 if (!chr) {
1453 close(master_fd);
1454 return NULL;
1455 }
aliguori6f97dba2008-10-31 18:49:55 +00001456
Michael Tokarev4efeabb2013-06-05 18:44:54 +04001457 chr->filename = g_strdup_printf("pty:%s", pty_name);
1458 ret->pty = g_strdup(pty_name);
Gerd Hoffmanne68c5952013-02-25 10:16:46 +01001459 ret->has_pty = true;
Lei Li58650212012-12-21 12:26:38 +08001460
Gerd Hoffmanne68c5952013-02-25 10:16:46 +01001461 fprintf(stderr, "char device redirected to %s (label %s)\n",
Michael Tokarev4efeabb2013-06-05 18:44:54 +04001462 pty_name, id);
Markus Armbrustera4e26042011-11-11 10:40:05 +01001463
Markus Armbruster2d528d42015-09-14 13:54:03 +02001464 s = g_new0(PtyCharDriver, 1);
aliguori6f97dba2008-10-31 18:49:55 +00001465 chr->opaque = s;
1466 chr->chr_write = pty_chr_write;
1467 chr->chr_update_read_handler = pty_chr_update_read_handler;
1468 chr->chr_close = pty_chr_close;
Anthony Liguorie6a87ed2013-03-05 23:21:24 +05301469 chr->chr_add_watch = pty_chr_add_watch;
Michael Rothbd5c51e2013-06-07 15:19:53 -05001470 chr->explicit_be_open = true;
aliguori6f97dba2008-10-31 18:49:55 +00001471
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001472 s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
Anthony Liguori8aa33ca2013-03-05 23:21:26 +05301473 s->timer_tag = 0;
aliguori6f97dba2008-10-31 18:49:55 +00001474
Markus Armbruster1f514702012-02-07 15:09:08 +01001475 return chr;
aliguori6f97dba2008-10-31 18:49:55 +00001476}
1477
1478static void tty_serial_init(int fd, int speed,
1479 int parity, int data_bits, int stop_bits)
1480{
1481 struct termios tty;
1482 speed_t spd;
1483
1484#if 0
1485 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1486 speed, parity, data_bits, stop_bits);
1487#endif
1488 tcgetattr (fd, &tty);
1489
Stefan Weil45eea132009-10-26 16:10:10 +01001490#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1491 speed = speed * 10 / 11;
1492 do {
1493 check_speed(50);
1494 check_speed(75);
1495 check_speed(110);
1496 check_speed(134);
1497 check_speed(150);
1498 check_speed(200);
1499 check_speed(300);
1500 check_speed(600);
1501 check_speed(1200);
1502 check_speed(1800);
1503 check_speed(2400);
1504 check_speed(4800);
1505 check_speed(9600);
1506 check_speed(19200);
1507 check_speed(38400);
1508 /* Non-Posix values follow. They may be unsupported on some systems. */
1509 check_speed(57600);
1510 check_speed(115200);
1511#ifdef B230400
1512 check_speed(230400);
1513#endif
1514#ifdef B460800
1515 check_speed(460800);
1516#endif
1517#ifdef B500000
1518 check_speed(500000);
1519#endif
1520#ifdef B576000
1521 check_speed(576000);
1522#endif
1523#ifdef B921600
1524 check_speed(921600);
1525#endif
1526#ifdef B1000000
1527 check_speed(1000000);
1528#endif
1529#ifdef B1152000
1530 check_speed(1152000);
1531#endif
1532#ifdef B1500000
1533 check_speed(1500000);
1534#endif
1535#ifdef B2000000
1536 check_speed(2000000);
1537#endif
1538#ifdef B2500000
1539 check_speed(2500000);
1540#endif
1541#ifdef B3000000
1542 check_speed(3000000);
1543#endif
1544#ifdef B3500000
1545 check_speed(3500000);
1546#endif
1547#ifdef B4000000
1548 check_speed(4000000);
1549#endif
aliguori6f97dba2008-10-31 18:49:55 +00001550 spd = B115200;
Stefan Weil45eea132009-10-26 16:10:10 +01001551 } while (0);
aliguori6f97dba2008-10-31 18:49:55 +00001552
1553 cfsetispeed(&tty, spd);
1554 cfsetospeed(&tty, spd);
1555
1556 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1557 |INLCR|IGNCR|ICRNL|IXON);
1558 tty.c_oflag |= OPOST;
1559 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1560 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1561 switch(data_bits) {
1562 default:
1563 case 8:
1564 tty.c_cflag |= CS8;
1565 break;
1566 case 7:
1567 tty.c_cflag |= CS7;
1568 break;
1569 case 6:
1570 tty.c_cflag |= CS6;
1571 break;
1572 case 5:
1573 tty.c_cflag |= CS5;
1574 break;
1575 }
1576 switch(parity) {
1577 default:
1578 case 'N':
1579 break;
1580 case 'E':
1581 tty.c_cflag |= PARENB;
1582 break;
1583 case 'O':
1584 tty.c_cflag |= PARENB | PARODD;
1585 break;
1586 }
1587 if (stop_bits == 2)
1588 tty.c_cflag |= CSTOPB;
1589
1590 tcsetattr (fd, TCSANOW, &tty);
1591}
1592
1593static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1594{
1595 FDCharDriver *s = chr->opaque;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001596 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
aliguori6f97dba2008-10-31 18:49:55 +00001597
1598 switch(cmd) {
1599 case CHR_IOCTL_SERIAL_SET_PARAMS:
1600 {
1601 QEMUSerialSetParams *ssp = arg;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001602 tty_serial_init(fioc->fd,
Anthony Liguoria29753f2013-03-05 23:21:19 +05301603 ssp->speed, ssp->parity,
aliguori6f97dba2008-10-31 18:49:55 +00001604 ssp->data_bits, ssp->stop_bits);
1605 }
1606 break;
1607 case CHR_IOCTL_SERIAL_SET_BREAK:
1608 {
1609 int enable = *(int *)arg;
Anthony Liguoria29753f2013-03-05 23:21:19 +05301610 if (enable) {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001611 tcsendbreak(fioc->fd, 1);
Anthony Liguoria29753f2013-03-05 23:21:19 +05301612 }
aliguori6f97dba2008-10-31 18:49:55 +00001613 }
1614 break;
1615 case CHR_IOCTL_SERIAL_GET_TIOCM:
1616 {
1617 int sarg = 0;
1618 int *targ = (int *)arg;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001619 ioctl(fioc->fd, TIOCMGET, &sarg);
aliguori6f97dba2008-10-31 18:49:55 +00001620 *targ = 0;
aurel32b4abdfa2009-02-08 14:46:17 +00001621 if (sarg & TIOCM_CTS)
aliguori6f97dba2008-10-31 18:49:55 +00001622 *targ |= CHR_TIOCM_CTS;
aurel32b4abdfa2009-02-08 14:46:17 +00001623 if (sarg & TIOCM_CAR)
aliguori6f97dba2008-10-31 18:49:55 +00001624 *targ |= CHR_TIOCM_CAR;
aurel32b4abdfa2009-02-08 14:46:17 +00001625 if (sarg & TIOCM_DSR)
aliguori6f97dba2008-10-31 18:49:55 +00001626 *targ |= CHR_TIOCM_DSR;
aurel32b4abdfa2009-02-08 14:46:17 +00001627 if (sarg & TIOCM_RI)
aliguori6f97dba2008-10-31 18:49:55 +00001628 *targ |= CHR_TIOCM_RI;
aurel32b4abdfa2009-02-08 14:46:17 +00001629 if (sarg & TIOCM_DTR)
aliguori6f97dba2008-10-31 18:49:55 +00001630 *targ |= CHR_TIOCM_DTR;
aurel32b4abdfa2009-02-08 14:46:17 +00001631 if (sarg & TIOCM_RTS)
aliguori6f97dba2008-10-31 18:49:55 +00001632 *targ |= CHR_TIOCM_RTS;
1633 }
1634 break;
1635 case CHR_IOCTL_SERIAL_SET_TIOCM:
1636 {
1637 int sarg = *(int *)arg;
1638 int targ = 0;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001639 ioctl(fioc->fd, TIOCMGET, &targ);
aurel32b4abdfa2009-02-08 14:46:17 +00001640 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1641 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1642 if (sarg & CHR_TIOCM_CTS)
1643 targ |= TIOCM_CTS;
1644 if (sarg & CHR_TIOCM_CAR)
1645 targ |= TIOCM_CAR;
1646 if (sarg & CHR_TIOCM_DSR)
1647 targ |= TIOCM_DSR;
1648 if (sarg & CHR_TIOCM_RI)
1649 targ |= TIOCM_RI;
1650 if (sarg & CHR_TIOCM_DTR)
aliguori6f97dba2008-10-31 18:49:55 +00001651 targ |= TIOCM_DTR;
aurel32b4abdfa2009-02-08 14:46:17 +00001652 if (sarg & CHR_TIOCM_RTS)
aliguori6f97dba2008-10-31 18:49:55 +00001653 targ |= TIOCM_RTS;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00001654 ioctl(fioc->fd, TIOCMSET, &targ);
aliguori6f97dba2008-10-31 18:49:55 +00001655 }
1656 break;
1657 default:
1658 return -ENOTSUP;
1659 }
1660 return 0;
1661}
1662
David Ahern4266a132010-02-10 18:27:17 -07001663static void qemu_chr_close_tty(CharDriverState *chr)
1664{
David Ahern4266a132010-02-10 18:27:17 -07001665 fd_chr_close(chr);
David Ahern4266a132010-02-10 18:27:17 -07001666}
1667
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001668static CharDriverState *qemu_chr_open_tty_fd(int fd,
1669 ChardevCommon *backend,
1670 Error **errp)
Gerd Hoffmannd59044e2012-12-19 13:50:29 +01001671{
1672 CharDriverState *chr;
1673
1674 tty_serial_init(fd, 115200, 'N', 8, 1);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001675 chr = qemu_chr_open_fd(fd, fd, backend, errp);
Gerd Hoffmannd59044e2012-12-19 13:50:29 +01001676 chr->chr_ioctl = tty_serial_ioctl;
1677 chr->chr_close = qemu_chr_close_tty;
1678 return chr;
1679}
aliguori6f97dba2008-10-31 18:49:55 +00001680#endif /* __linux__ || __sun__ */
1681
1682#if defined(__linux__)
Gerd Hoffmanne5514982012-12-19 16:35:42 +01001683
1684#define HAVE_CHARDEV_PARPORT 1
1685
aliguori6f97dba2008-10-31 18:49:55 +00001686typedef struct {
1687 int fd;
1688 int mode;
1689} ParallelCharDriver;
1690
1691static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1692{
1693 if (s->mode != mode) {
1694 int m = mode;
1695 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1696 return 0;
1697 s->mode = mode;
1698 }
1699 return 1;
1700}
1701
1702static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1703{
1704 ParallelCharDriver *drv = chr->opaque;
1705 int fd = drv->fd;
1706 uint8_t b;
1707
1708 switch(cmd) {
1709 case CHR_IOCTL_PP_READ_DATA:
1710 if (ioctl(fd, PPRDATA, &b) < 0)
1711 return -ENOTSUP;
1712 *(uint8_t *)arg = b;
1713 break;
1714 case CHR_IOCTL_PP_WRITE_DATA:
1715 b = *(uint8_t *)arg;
1716 if (ioctl(fd, PPWDATA, &b) < 0)
1717 return -ENOTSUP;
1718 break;
1719 case CHR_IOCTL_PP_READ_CONTROL:
1720 if (ioctl(fd, PPRCONTROL, &b) < 0)
1721 return -ENOTSUP;
1722 /* Linux gives only the lowest bits, and no way to know data
1723 direction! For better compatibility set the fixed upper
1724 bits. */
1725 *(uint8_t *)arg = b | 0xc0;
1726 break;
1727 case CHR_IOCTL_PP_WRITE_CONTROL:
1728 b = *(uint8_t *)arg;
1729 if (ioctl(fd, PPWCONTROL, &b) < 0)
1730 return -ENOTSUP;
1731 break;
1732 case CHR_IOCTL_PP_READ_STATUS:
1733 if (ioctl(fd, PPRSTATUS, &b) < 0)
1734 return -ENOTSUP;
1735 *(uint8_t *)arg = b;
1736 break;
1737 case CHR_IOCTL_PP_DATA_DIR:
1738 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1739 return -ENOTSUP;
1740 break;
1741 case CHR_IOCTL_PP_EPP_READ_ADDR:
1742 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1743 struct ParallelIOArg *parg = arg;
1744 int n = read(fd, parg->buffer, parg->count);
1745 if (n != parg->count) {
1746 return -EIO;
1747 }
1748 }
1749 break;
1750 case CHR_IOCTL_PP_EPP_READ:
1751 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1752 struct ParallelIOArg *parg = arg;
1753 int n = read(fd, parg->buffer, parg->count);
1754 if (n != parg->count) {
1755 return -EIO;
1756 }
1757 }
1758 break;
1759 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1760 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1761 struct ParallelIOArg *parg = arg;
1762 int n = write(fd, parg->buffer, parg->count);
1763 if (n != parg->count) {
1764 return -EIO;
1765 }
1766 }
1767 break;
1768 case CHR_IOCTL_PP_EPP_WRITE:
1769 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1770 struct ParallelIOArg *parg = arg;
1771 int n = write(fd, parg->buffer, parg->count);
1772 if (n != parg->count) {
1773 return -EIO;
1774 }
1775 }
1776 break;
1777 default:
1778 return -ENOTSUP;
1779 }
1780 return 0;
1781}
1782
1783static void pp_close(CharDriverState *chr)
1784{
1785 ParallelCharDriver *drv = chr->opaque;
1786 int fd = drv->fd;
1787
1788 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1789 ioctl(fd, PPRELEASE);
1790 close(fd);
Anthony Liguori7267c092011-08-20 22:09:37 -05001791 g_free(drv);
Hans de Goedea425d232011-11-19 10:22:43 +01001792 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
aliguori6f97dba2008-10-31 18:49:55 +00001793}
1794
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001795static CharDriverState *qemu_chr_open_pp_fd(int fd,
1796 ChardevCommon *backend,
1797 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00001798{
1799 CharDriverState *chr;
1800 ParallelCharDriver *drv;
aliguori6f97dba2008-10-31 18:49:55 +00001801
1802 if (ioctl(fd, PPCLAIM) < 0) {
Paolo Bonzini38bfb1a2015-10-12 09:49:28 +02001803 error_setg_errno(errp, errno, "not a parallel port");
aliguori6f97dba2008-10-31 18:49:55 +00001804 close(fd);
Markus Armbruster1f514702012-02-07 15:09:08 +01001805 return NULL;
aliguori6f97dba2008-10-31 18:49:55 +00001806 }
1807
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001808 chr = qemu_chr_alloc(backend, errp);
1809 if (!chr) {
1810 return NULL;
1811 }
Paolo Bonzini27ef9cb2016-01-18 11:25:45 +01001812
1813 drv = g_new0(ParallelCharDriver, 1);
1814 chr->opaque = drv;
aliguori6f97dba2008-10-31 18:49:55 +00001815 chr->chr_write = null_chr_write;
1816 chr->chr_ioctl = pp_ioctl;
1817 chr->chr_close = pp_close;
Paolo Bonzini27ef9cb2016-01-18 11:25:45 +01001818
1819 drv->fd = fd;
1820 drv->mode = IEEE1284_MODE_COMPAT;
aliguori6f97dba2008-10-31 18:49:55 +00001821
Markus Armbruster1f514702012-02-07 15:09:08 +01001822 return chr;
aliguori6f97dba2008-10-31 18:49:55 +00001823}
1824#endif /* __linux__ */
1825
Aurelien Jarnoa167ba52009-11-29 18:00:41 +01001826#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
Gerd Hoffmanne5514982012-12-19 16:35:42 +01001827
1828#define HAVE_CHARDEV_PARPORT 1
1829
blueswir16972f932008-11-22 20:49:12 +00001830static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1831{
Stefan Weile0efb992011-02-23 19:09:16 +01001832 int fd = (int)(intptr_t)chr->opaque;
blueswir16972f932008-11-22 20:49:12 +00001833 uint8_t b;
1834
1835 switch(cmd) {
1836 case CHR_IOCTL_PP_READ_DATA:
1837 if (ioctl(fd, PPIGDATA, &b) < 0)
1838 return -ENOTSUP;
1839 *(uint8_t *)arg = b;
1840 break;
1841 case CHR_IOCTL_PP_WRITE_DATA:
1842 b = *(uint8_t *)arg;
1843 if (ioctl(fd, PPISDATA, &b) < 0)
1844 return -ENOTSUP;
1845 break;
1846 case CHR_IOCTL_PP_READ_CONTROL:
1847 if (ioctl(fd, PPIGCTRL, &b) < 0)
1848 return -ENOTSUP;
1849 *(uint8_t *)arg = b;
1850 break;
1851 case CHR_IOCTL_PP_WRITE_CONTROL:
1852 b = *(uint8_t *)arg;
1853 if (ioctl(fd, PPISCTRL, &b) < 0)
1854 return -ENOTSUP;
1855 break;
1856 case CHR_IOCTL_PP_READ_STATUS:
1857 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1858 return -ENOTSUP;
1859 *(uint8_t *)arg = b;
1860 break;
1861 default:
1862 return -ENOTSUP;
1863 }
1864 return 0;
1865}
1866
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001867static CharDriverState *qemu_chr_open_pp_fd(int fd,
Daniel P. Berrange0850d492016-01-22 17:35:25 +00001868 ChardevCommon *backend,
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001869 Error **errp)
blueswir16972f932008-11-22 20:49:12 +00001870{
1871 CharDriverState *chr;
blueswir16972f932008-11-22 20:49:12 +00001872
Daniel P. Berrange0850d492016-01-22 17:35:25 +00001873 chr = qemu_chr_alloc(backend, errp);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00001874 if (!chr) {
1875 return NULL;
1876 }
Stefan Weile0efb992011-02-23 19:09:16 +01001877 chr->opaque = (void *)(intptr_t)fd;
blueswir16972f932008-11-22 20:49:12 +00001878 chr->chr_write = null_chr_write;
1879 chr->chr_ioctl = pp_ioctl;
Michael Rothbd5c51e2013-06-07 15:19:53 -05001880 chr->explicit_be_open = true;
Markus Armbruster1f514702012-02-07 15:09:08 +01001881 return chr;
blueswir16972f932008-11-22 20:49:12 +00001882}
1883#endif
1884
aliguori6f97dba2008-10-31 18:49:55 +00001885#else /* _WIN32 */
1886
Paolo Bonzinid809ab92015-10-12 09:46:23 +02001887#define HAVE_CHARDEV_SERIAL 1
1888
aliguori6f97dba2008-10-31 18:49:55 +00001889typedef struct {
1890 int max_size;
1891 HANDLE hcom, hrecv, hsend;
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001892 OVERLAPPED orecv;
aliguori6f97dba2008-10-31 18:49:55 +00001893 BOOL fpipe;
1894 DWORD len;
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02001895
1896 /* Protected by the CharDriverState chr_write_lock. */
1897 OVERLAPPED osend;
aliguori6f97dba2008-10-31 18:49:55 +00001898} WinCharState;
1899
Fabien Chouteaudb418a02011-10-06 16:37:51 +02001900typedef struct {
1901 HANDLE hStdIn;
1902 HANDLE hInputReadyEvent;
1903 HANDLE hInputDoneEvent;
1904 HANDLE hInputThread;
1905 uint8_t win_stdio_buf;
1906} WinStdioCharState;
1907
aliguori6f97dba2008-10-31 18:49:55 +00001908#define NSENDBUF 2048
1909#define NRECVBUF 2048
1910#define MAXCONNECT 1
1911#define NTIMEOUT 5000
1912
1913static int win_chr_poll(void *opaque);
1914static int win_chr_pipe_poll(void *opaque);
1915
1916static void win_chr_close(CharDriverState *chr)
1917{
1918 WinCharState *s = chr->opaque;
1919
1920 if (s->hsend) {
1921 CloseHandle(s->hsend);
1922 s->hsend = NULL;
1923 }
1924 if (s->hrecv) {
1925 CloseHandle(s->hrecv);
1926 s->hrecv = NULL;
1927 }
1928 if (s->hcom) {
1929 CloseHandle(s->hcom);
1930 s->hcom = NULL;
1931 }
1932 if (s->fpipe)
1933 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1934 else
1935 qemu_del_polling_cb(win_chr_poll, chr);
Amit Shah793cbfb2009-08-11 21:27:48 +05301936
Hans de Goedea425d232011-11-19 10:22:43 +01001937 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
aliguori6f97dba2008-10-31 18:49:55 +00001938}
1939
Paolo Bonzini6511d392015-09-29 15:08:05 +02001940static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00001941{
1942 WinCharState *s = chr->opaque;
1943 COMMCONFIG comcfg;
1944 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1945 COMSTAT comstat;
1946 DWORD size;
1947 DWORD err;
1948
1949 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1950 if (!s->hsend) {
Paolo Bonzini6511d392015-09-29 15:08:05 +02001951 error_setg(errp, "Failed CreateEvent");
aliguori6f97dba2008-10-31 18:49:55 +00001952 goto fail;
1953 }
1954 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1955 if (!s->hrecv) {
Paolo Bonzini6511d392015-09-29 15:08:05 +02001956 error_setg(errp, "Failed CreateEvent");
aliguori6f97dba2008-10-31 18:49:55 +00001957 goto fail;
1958 }
1959
1960 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1961 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1962 if (s->hcom == INVALID_HANDLE_VALUE) {
Paolo Bonzini6511d392015-09-29 15:08:05 +02001963 error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
aliguori6f97dba2008-10-31 18:49:55 +00001964 s->hcom = NULL;
1965 goto fail;
1966 }
1967
1968 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
Paolo Bonzini6511d392015-09-29 15:08:05 +02001969 error_setg(errp, "Failed SetupComm");
aliguori6f97dba2008-10-31 18:49:55 +00001970 goto fail;
1971 }
1972
1973 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1974 size = sizeof(COMMCONFIG);
1975 GetDefaultCommConfig(filename, &comcfg, &size);
1976 comcfg.dcb.DCBlength = sizeof(DCB);
1977 CommConfigDialog(filename, NULL, &comcfg);
1978
1979 if (!SetCommState(s->hcom, &comcfg.dcb)) {
Paolo Bonzini6511d392015-09-29 15:08:05 +02001980 error_setg(errp, "Failed SetCommState");
aliguori6f97dba2008-10-31 18:49:55 +00001981 goto fail;
1982 }
1983
1984 if (!SetCommMask(s->hcom, EV_ERR)) {
Paolo Bonzini6511d392015-09-29 15:08:05 +02001985 error_setg(errp, "Failed SetCommMask");
aliguori6f97dba2008-10-31 18:49:55 +00001986 goto fail;
1987 }
1988
1989 cto.ReadIntervalTimeout = MAXDWORD;
1990 if (!SetCommTimeouts(s->hcom, &cto)) {
Paolo Bonzini6511d392015-09-29 15:08:05 +02001991 error_setg(errp, "Failed SetCommTimeouts");
aliguori6f97dba2008-10-31 18:49:55 +00001992 goto fail;
1993 }
1994
1995 if (!ClearCommError(s->hcom, &err, &comstat)) {
Paolo Bonzini6511d392015-09-29 15:08:05 +02001996 error_setg(errp, "Failed ClearCommError");
aliguori6f97dba2008-10-31 18:49:55 +00001997 goto fail;
1998 }
1999 qemu_add_polling_cb(win_chr_poll, chr);
2000 return 0;
2001
2002 fail:
2003 win_chr_close(chr);
2004 return -1;
2005}
2006
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02002007/* Called with chr_write_lock held. */
aliguori6f97dba2008-10-31 18:49:55 +00002008static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
2009{
2010 WinCharState *s = chr->opaque;
2011 DWORD len, ret, size, err;
2012
2013 len = len1;
2014 ZeroMemory(&s->osend, sizeof(s->osend));
2015 s->osend.hEvent = s->hsend;
2016 while (len > 0) {
2017 if (s->hsend)
2018 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
2019 else
2020 ret = WriteFile(s->hcom, buf, len, &size, NULL);
2021 if (!ret) {
2022 err = GetLastError();
2023 if (err == ERROR_IO_PENDING) {
2024 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
2025 if (ret) {
2026 buf += size;
2027 len -= size;
2028 } else {
2029 break;
2030 }
2031 } else {
2032 break;
2033 }
2034 } else {
2035 buf += size;
2036 len -= size;
2037 }
2038 }
2039 return len1 - len;
2040}
2041
2042static int win_chr_read_poll(CharDriverState *chr)
2043{
2044 WinCharState *s = chr->opaque;
2045
Anthony Liguori909cda12011-08-15 11:17:31 -05002046 s->max_size = qemu_chr_be_can_write(chr);
aliguori6f97dba2008-10-31 18:49:55 +00002047 return s->max_size;
2048}
2049
2050static void win_chr_readfile(CharDriverState *chr)
2051{
2052 WinCharState *s = chr->opaque;
2053 int ret, err;
Amit Shah9bd78542009-11-03 19:59:54 +05302054 uint8_t buf[READ_BUF_LEN];
aliguori6f97dba2008-10-31 18:49:55 +00002055 DWORD size;
2056
2057 ZeroMemory(&s->orecv, sizeof(s->orecv));
2058 s->orecv.hEvent = s->hrecv;
2059 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
2060 if (!ret) {
2061 err = GetLastError();
2062 if (err == ERROR_IO_PENDING) {
2063 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
2064 }
2065 }
2066
2067 if (size > 0) {
Anthony Liguorifa5efcc2011-08-15 11:17:30 -05002068 qemu_chr_be_write(chr, buf, size);
aliguori6f97dba2008-10-31 18:49:55 +00002069 }
2070}
2071
2072static void win_chr_read(CharDriverState *chr)
2073{
2074 WinCharState *s = chr->opaque;
2075
2076 if (s->len > s->max_size)
2077 s->len = s->max_size;
2078 if (s->len == 0)
2079 return;
2080
2081 win_chr_readfile(chr);
2082}
2083
2084static int win_chr_poll(void *opaque)
2085{
2086 CharDriverState *chr = opaque;
2087 WinCharState *s = chr->opaque;
2088 COMSTAT status;
2089 DWORD comerr;
2090
2091 ClearCommError(s->hcom, &comerr, &status);
2092 if (status.cbInQue > 0) {
2093 s->len = status.cbInQue;
2094 win_chr_read_poll(chr);
2095 win_chr_read(chr);
2096 return 1;
2097 }
2098 return 0;
2099}
2100
Paolo Bonzini6511d392015-09-29 15:08:05 +02002101static CharDriverState *qemu_chr_open_win_path(const char *filename,
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002102 ChardevCommon *backend,
Paolo Bonzini6511d392015-09-29 15:08:05 +02002103 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00002104{
2105 CharDriverState *chr;
2106 WinCharState *s;
2107
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002108 chr = qemu_chr_alloc(backend, errp);
2109 if (!chr) {
2110 return NULL;
2111 }
Markus Armbruster2d528d42015-09-14 13:54:03 +02002112 s = g_new0(WinCharState, 1);
aliguori6f97dba2008-10-31 18:49:55 +00002113 chr->opaque = s;
2114 chr->chr_write = win_chr_write;
2115 chr->chr_close = win_chr_close;
2116
Paolo Bonzini6511d392015-09-29 15:08:05 +02002117 if (win_chr_init(chr, filename, errp) < 0) {
Stefan Weil2e02e182011-10-07 07:38:46 +02002118 g_free(s);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002119 qemu_chr_free_common(chr);
Markus Armbruster1f514702012-02-07 15:09:08 +01002120 return NULL;
aliguori6f97dba2008-10-31 18:49:55 +00002121 }
Markus Armbruster1f514702012-02-07 15:09:08 +01002122 return chr;
aliguori6f97dba2008-10-31 18:49:55 +00002123}
2124
2125static int win_chr_pipe_poll(void *opaque)
2126{
2127 CharDriverState *chr = opaque;
2128 WinCharState *s = chr->opaque;
2129 DWORD size;
2130
2131 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2132 if (size > 0) {
2133 s->len = size;
2134 win_chr_read_poll(chr);
2135 win_chr_read(chr);
2136 return 1;
2137 }
2138 return 0;
2139}
2140
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02002141static int win_chr_pipe_init(CharDriverState *chr, const char *filename,
2142 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00002143{
2144 WinCharState *s = chr->opaque;
2145 OVERLAPPED ov;
2146 int ret;
2147 DWORD size;
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00002148 char *openname;
aliguori6f97dba2008-10-31 18:49:55 +00002149
2150 s->fpipe = TRUE;
2151
2152 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2153 if (!s->hsend) {
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02002154 error_setg(errp, "Failed CreateEvent");
aliguori6f97dba2008-10-31 18:49:55 +00002155 goto fail;
2156 }
2157 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2158 if (!s->hrecv) {
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02002159 error_setg(errp, "Failed CreateEvent");
aliguori6f97dba2008-10-31 18:49:55 +00002160 goto fail;
2161 }
2162
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00002163 openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
aliguori6f97dba2008-10-31 18:49:55 +00002164 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2165 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2166 PIPE_WAIT,
2167 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00002168 g_free(openname);
aliguori6f97dba2008-10-31 18:49:55 +00002169 if (s->hcom == INVALID_HANDLE_VALUE) {
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02002170 error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
aliguori6f97dba2008-10-31 18:49:55 +00002171 s->hcom = NULL;
2172 goto fail;
2173 }
2174
2175 ZeroMemory(&ov, sizeof(ov));
2176 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2177 ret = ConnectNamedPipe(s->hcom, &ov);
2178 if (ret) {
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02002179 error_setg(errp, "Failed ConnectNamedPipe");
aliguori6f97dba2008-10-31 18:49:55 +00002180 goto fail;
2181 }
2182
2183 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2184 if (!ret) {
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02002185 error_setg(errp, "Failed GetOverlappedResult");
aliguori6f97dba2008-10-31 18:49:55 +00002186 if (ov.hEvent) {
2187 CloseHandle(ov.hEvent);
2188 ov.hEvent = NULL;
2189 }
2190 goto fail;
2191 }
2192
2193 if (ov.hEvent) {
2194 CloseHandle(ov.hEvent);
2195 ov.hEvent = NULL;
2196 }
2197 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2198 return 0;
2199
2200 fail:
2201 win_chr_close(chr);
2202 return -1;
2203}
2204
2205
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02002206static CharDriverState *qemu_chr_open_pipe(const char *id,
2207 ChardevBackend *backend,
2208 ChardevReturn *ret,
2209 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00002210{
Eric Blake32bafa82016-03-17 16:48:37 -06002211 ChardevHostdev *opts = backend->u.pipe.data;
Gerd Hoffmann548cbb32013-02-25 11:50:55 +01002212 const char *filename = opts->device;
aliguori6f97dba2008-10-31 18:49:55 +00002213 CharDriverState *chr;
2214 WinCharState *s;
Eric Blakef194a1a2016-03-03 09:16:47 -07002215 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
aliguori6f97dba2008-10-31 18:49:55 +00002216
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002217 chr = qemu_chr_alloc(common, errp);
2218 if (!chr) {
2219 return NULL;
2220 }
Markus Armbruster2d528d42015-09-14 13:54:03 +02002221 s = g_new0(WinCharState, 1);
aliguori6f97dba2008-10-31 18:49:55 +00002222 chr->opaque = s;
2223 chr->chr_write = win_chr_write;
2224 chr->chr_close = win_chr_close;
2225
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02002226 if (win_chr_pipe_init(chr, filename, errp) < 0) {
Stefan Weil2e02e182011-10-07 07:38:46 +02002227 g_free(s);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002228 qemu_chr_free_common(chr);
Markus Armbruster1f514702012-02-07 15:09:08 +01002229 return NULL;
aliguori6f97dba2008-10-31 18:49:55 +00002230 }
Markus Armbruster1f514702012-02-07 15:09:08 +01002231 return chr;
aliguori6f97dba2008-10-31 18:49:55 +00002232}
2233
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002234static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out,
2235 ChardevCommon *backend,
2236 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00002237{
2238 CharDriverState *chr;
2239 WinCharState *s;
2240
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002241 chr = qemu_chr_alloc(backend, errp);
2242 if (!chr) {
2243 return NULL;
2244 }
Markus Armbruster2d528d42015-09-14 13:54:03 +02002245 s = g_new0(WinCharState, 1);
aliguori6f97dba2008-10-31 18:49:55 +00002246 s->hcom = fd_out;
2247 chr->opaque = s;
2248 chr->chr_write = win_chr_write;
Markus Armbruster1f514702012-02-07 15:09:08 +01002249 return chr;
aliguori6f97dba2008-10-31 18:49:55 +00002250}
2251
Paolo Bonzini122e5ed2015-09-29 15:42:04 +02002252static CharDriverState *qemu_chr_open_win_con(const char *id,
2253 ChardevBackend *backend,
2254 ChardevReturn *ret,
2255 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00002256{
Eric Blake32bafa82016-03-17 16:48:37 -06002257 ChardevCommon *common = backend->u.console.data;
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002258 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE),
2259 common, errp);
aliguori6f97dba2008-10-31 18:49:55 +00002260}
2261
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002262static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2263{
2264 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2265 DWORD dwSize;
2266 int len1;
2267
2268 len1 = len;
2269
2270 while (len1 > 0) {
2271 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2272 break;
2273 }
2274 buf += dwSize;
2275 len1 -= dwSize;
2276 }
2277
2278 return len - len1;
2279}
2280
2281static void win_stdio_wait_func(void *opaque)
2282{
2283 CharDriverState *chr = opaque;
2284 WinStdioCharState *stdio = chr->opaque;
2285 INPUT_RECORD buf[4];
2286 int ret;
2287 DWORD dwSize;
2288 int i;
2289
Stefan Weildff74242013-12-07 14:48:04 +01002290 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002291
2292 if (!ret) {
2293 /* Avoid error storm */
2294 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2295 return;
2296 }
2297
2298 for (i = 0; i < dwSize; i++) {
2299 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2300
2301 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2302 int j;
2303 if (kev->uChar.AsciiChar != 0) {
2304 for (j = 0; j < kev->wRepeatCount; j++) {
2305 if (qemu_chr_be_can_write(chr)) {
2306 uint8_t c = kev->uChar.AsciiChar;
2307 qemu_chr_be_write(chr, &c, 1);
2308 }
2309 }
2310 }
2311 }
2312 }
2313}
2314
2315static DWORD WINAPI win_stdio_thread(LPVOID param)
2316{
2317 CharDriverState *chr = param;
2318 WinStdioCharState *stdio = chr->opaque;
2319 int ret;
2320 DWORD dwSize;
2321
2322 while (1) {
2323
2324 /* Wait for one byte */
2325 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2326
2327 /* Exit in case of error, continue if nothing read */
2328 if (!ret) {
2329 break;
2330 }
2331 if (!dwSize) {
2332 continue;
2333 }
2334
2335 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2336 if (stdio->win_stdio_buf == '\r') {
2337 continue;
2338 }
2339
2340 /* Signal the main thread and wait until the byte was eaten */
2341 if (!SetEvent(stdio->hInputReadyEvent)) {
2342 break;
2343 }
2344 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2345 != WAIT_OBJECT_0) {
2346 break;
2347 }
2348 }
2349
2350 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2351 return 0;
2352}
2353
2354static void win_stdio_thread_wait_func(void *opaque)
2355{
2356 CharDriverState *chr = opaque;
2357 WinStdioCharState *stdio = chr->opaque;
2358
2359 if (qemu_chr_be_can_write(chr)) {
2360 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2361 }
2362
2363 SetEvent(stdio->hInputDoneEvent);
2364}
2365
2366static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2367{
2368 WinStdioCharState *stdio = chr->opaque;
2369 DWORD dwMode = 0;
2370
2371 GetConsoleMode(stdio->hStdIn, &dwMode);
2372
2373 if (echo) {
2374 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2375 } else {
2376 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2377 }
2378}
2379
2380static void win_stdio_close(CharDriverState *chr)
2381{
2382 WinStdioCharState *stdio = chr->opaque;
2383
2384 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2385 CloseHandle(stdio->hInputReadyEvent);
2386 }
2387 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2388 CloseHandle(stdio->hInputDoneEvent);
2389 }
2390 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2391 TerminateThread(stdio->hInputThread, 0);
2392 }
2393
2394 g_free(chr->opaque);
2395 g_free(chr);
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002396}
2397
Paolo Bonzini8c84b252015-09-29 15:40:28 +02002398static CharDriverState *qemu_chr_open_stdio(const char *id,
2399 ChardevBackend *backend,
2400 ChardevReturn *ret,
2401 Error **errp)
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002402{
2403 CharDriverState *chr;
2404 WinStdioCharState *stdio;
2405 DWORD dwMode;
2406 int is_console = 0;
Eric Blake32bafa82016-03-17 16:48:37 -06002407 ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio.data);
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002408
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002409 chr = qemu_chr_alloc(common, errp);
2410 if (!chr) {
2411 return NULL;
2412 }
Markus Armbruster2d528d42015-09-14 13:54:03 +02002413 stdio = g_new0(WinStdioCharState, 1);
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002414
2415 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2416 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
Paolo Bonzini8c84b252015-09-29 15:40:28 +02002417 error_setg(errp, "cannot open stdio: invalid handle");
2418 return NULL;
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002419 }
2420
2421 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2422
2423 chr->opaque = stdio;
2424 chr->chr_write = win_stdio_write;
2425 chr->chr_close = win_stdio_close;
2426
Anthony Liguoried7a1542013-03-05 23:21:17 +05302427 if (is_console) {
2428 if (qemu_add_wait_object(stdio->hStdIn,
2429 win_stdio_wait_func, chr)) {
Paolo Bonzini8c84b252015-09-29 15:40:28 +02002430 error_setg(errp, "qemu_add_wait_object: failed");
2431 goto err1;
Anthony Liguoried7a1542013-03-05 23:21:17 +05302432 }
2433 } else {
2434 DWORD dwId;
2435
2436 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2437 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
Paolo Bonzini8c84b252015-09-29 15:40:28 +02002438 if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
Anthony Liguoried7a1542013-03-05 23:21:17 +05302439 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
Paolo Bonzini8c84b252015-09-29 15:40:28 +02002440 error_setg(errp, "cannot create event");
2441 goto err2;
Anthony Liguoried7a1542013-03-05 23:21:17 +05302442 }
2443 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2444 win_stdio_thread_wait_func, chr)) {
Paolo Bonzini8c84b252015-09-29 15:40:28 +02002445 error_setg(errp, "qemu_add_wait_object: failed");
2446 goto err2;
2447 }
2448 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2449 chr, 0, &dwId);
2450
2451 if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
2452 error_setg(errp, "cannot create stdio thread");
2453 goto err3;
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002454 }
2455 }
2456
2457 dwMode |= ENABLE_LINE_INPUT;
2458
Anthony Liguoried7a1542013-03-05 23:21:17 +05302459 if (is_console) {
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002460 /* set the terminal in raw mode */
2461 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2462 dwMode |= ENABLE_PROCESSED_INPUT;
2463 }
2464
2465 SetConsoleMode(stdio->hStdIn, dwMode);
2466
2467 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2468 qemu_chr_fe_set_echo(chr, false);
2469
Markus Armbruster1f514702012-02-07 15:09:08 +01002470 return chr;
Paolo Bonzini8c84b252015-09-29 15:40:28 +02002471
2472err3:
2473 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2474err2:
2475 CloseHandle(stdio->hInputReadyEvent);
2476 CloseHandle(stdio->hInputDoneEvent);
2477err1:
2478 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2479 return NULL;
Fabien Chouteaudb418a02011-10-06 16:37:51 +02002480}
aliguori6f97dba2008-10-31 18:49:55 +00002481#endif /* !_WIN32 */
2482
Anthony Liguori5ab82112013-03-05 23:21:31 +05302483
aliguori6f97dba2008-10-31 18:49:55 +00002484/***********************************************************/
2485/* UDP Net console */
2486
2487typedef struct {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002488 QIOChannel *ioc;
Amit Shah9bd78542009-11-03 19:59:54 +05302489 uint8_t buf[READ_BUF_LEN];
aliguori6f97dba2008-10-31 18:49:55 +00002490 int bufcnt;
2491 int bufptr;
2492 int max_size;
2493} NetCharDriver;
2494
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02002495/* Called with chr_write_lock held. */
aliguori6f97dba2008-10-31 18:49:55 +00002496static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2497{
2498 NetCharDriver *s = chr->opaque;
2499
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002500 return qio_channel_write(
2501 s->ioc, (const char *)buf, len, NULL);
aliguori6f97dba2008-10-31 18:49:55 +00002502}
2503
2504static int udp_chr_read_poll(void *opaque)
2505{
2506 CharDriverState *chr = opaque;
2507 NetCharDriver *s = chr->opaque;
2508
Anthony Liguori909cda12011-08-15 11:17:31 -05002509 s->max_size = qemu_chr_be_can_write(chr);
aliguori6f97dba2008-10-31 18:49:55 +00002510
2511 /* If there were any stray characters in the queue process them
2512 * first
2513 */
2514 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
Anthony Liguorifa5efcc2011-08-15 11:17:30 -05002515 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
aliguori6f97dba2008-10-31 18:49:55 +00002516 s->bufptr++;
Anthony Liguori909cda12011-08-15 11:17:31 -05002517 s->max_size = qemu_chr_be_can_write(chr);
aliguori6f97dba2008-10-31 18:49:55 +00002518 }
2519 return s->max_size;
2520}
2521
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002522static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
aliguori6f97dba2008-10-31 18:49:55 +00002523{
2524 CharDriverState *chr = opaque;
2525 NetCharDriver *s = chr->opaque;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002526 ssize_t ret;
aliguori6f97dba2008-10-31 18:49:55 +00002527
Paolo Bonzinicdbf6e12013-04-19 17:32:08 +02002528 if (s->max_size == 0) {
2529 return TRUE;
2530 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002531 ret = qio_channel_read(
2532 s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
2533 if (ret <= 0) {
Amit Shah26da70c2013-08-28 15:23:37 +05302534 remove_fd_in_watch(chr);
Anthony Liguori76a96442013-03-05 23:21:21 +05302535 return FALSE;
2536 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002537 s->bufcnt = ret;
aliguori6f97dba2008-10-31 18:49:55 +00002538
2539 s->bufptr = 0;
2540 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
Anthony Liguorifa5efcc2011-08-15 11:17:30 -05002541 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
aliguori6f97dba2008-10-31 18:49:55 +00002542 s->bufptr++;
Anthony Liguori909cda12011-08-15 11:17:31 -05002543 s->max_size = qemu_chr_be_can_write(chr);
aliguori6f97dba2008-10-31 18:49:55 +00002544 }
Anthony Liguori76a96442013-03-05 23:21:21 +05302545
2546 return TRUE;
aliguori6f97dba2008-10-31 18:49:55 +00002547}
2548
2549static void udp_chr_update_read_handler(CharDriverState *chr)
2550{
2551 NetCharDriver *s = chr->opaque;
2552
Amit Shah26da70c2013-08-28 15:23:37 +05302553 remove_fd_in_watch(chr);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002554 if (s->ioc) {
2555 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2556 udp_chr_read_poll,
Amit Shah7ba9add2013-08-28 15:18:29 +05302557 udp_chr_read, chr);
aliguori6f97dba2008-10-31 18:49:55 +00002558 }
2559}
2560
aliguori819f56b2009-03-28 17:58:14 +00002561static void udp_chr_close(CharDriverState *chr)
2562{
2563 NetCharDriver *s = chr->opaque;
Amit Shah26da70c2013-08-28 15:23:37 +05302564
2565 remove_fd_in_watch(chr);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002566 if (s->ioc) {
2567 object_unref(OBJECT(s->ioc));
aliguori819f56b2009-03-28 17:58:14 +00002568 }
Anthony Liguori7267c092011-08-20 22:09:37 -05002569 g_free(s);
Hans de Goedea425d232011-11-19 10:22:43 +01002570 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
aliguori819f56b2009-03-28 17:58:14 +00002571}
2572
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002573static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc,
2574 ChardevCommon *backend,
2575 Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00002576{
2577 CharDriverState *chr = NULL;
2578 NetCharDriver *s = NULL;
aliguori6f97dba2008-10-31 18:49:55 +00002579
Daniel P. Berranged0d77082016-01-11 12:44:41 +00002580 chr = qemu_chr_alloc(backend, errp);
2581 if (!chr) {
2582 return NULL;
2583 }
Markus Armbruster2d528d42015-09-14 13:54:03 +02002584 s = g_new0(NetCharDriver, 1);
aliguori6f97dba2008-10-31 18:49:55 +00002585
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002586 s->ioc = QIO_CHANNEL(sioc);
aliguori6f97dba2008-10-31 18:49:55 +00002587 s->bufcnt = 0;
2588 s->bufptr = 0;
2589 chr->opaque = s;
2590 chr->chr_write = udp_chr_write;
2591 chr->chr_update_read_handler = udp_chr_update_read_handler;
aliguori819f56b2009-03-28 17:58:14 +00002592 chr->chr_close = udp_chr_close;
Michael Rothbd5c51e2013-06-07 15:19:53 -05002593 /* be isn't opened until we get a connection */
2594 chr->explicit_be_open = true;
Markus Armbruster1f514702012-02-07 15:09:08 +01002595 return chr;
Gerd Hoffmann3ecc0592013-02-27 14:10:47 +01002596}
aliguori6f97dba2008-10-31 18:49:55 +00002597
aliguori6f97dba2008-10-31 18:49:55 +00002598/***********************************************************/
2599/* TCP Net console */
2600
2601typedef struct {
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00002602 QIOChannel *ioc; /* Client I/O channel */
2603 QIOChannelSocket *sioc; /* Client master channel */
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002604 QIOChannelSocket *listen_ioc;
Amit Shah7ba9add2013-08-28 15:18:29 +05302605 guint listen_tag;
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00002606 QCryptoTLSCreds *tls_creds;
aliguori6f97dba2008-10-31 18:49:55 +00002607 int connected;
2608 int max_size;
2609 int do_telnetopt;
2610 int do_nodelay;
2611 int is_unix;
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002612 int *read_msgfds;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002613 size_t read_msgfds_num;
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +03002614 int *write_msgfds;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002615 size_t write_msgfds_num;
Corey Minyardcfb429c2014-10-02 11:17:35 -05002616
2617 SocketAddress *addr;
2618 bool is_listen;
2619 bool is_telnet;
Corey Minyard5dd1f022014-10-02 11:17:37 -05002620
2621 guint reconnect_timer;
2622 int64_t reconnect_time;
Corey Minyard5008e5b2014-10-08 07:11:55 -05002623 bool connect_err_reported;
aliguori6f97dba2008-10-31 18:49:55 +00002624} TCPCharDriver;
2625
Corey Minyard5dd1f022014-10-02 11:17:37 -05002626static gboolean socket_reconnect_timeout(gpointer opaque);
2627
2628static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2629{
2630 TCPCharDriver *s = chr->opaque;
2631 assert(s->connected == 0);
2632 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2633 socket_reconnect_timeout, chr);
2634}
2635
Corey Minyard5008e5b2014-10-08 07:11:55 -05002636static void check_report_connect_error(CharDriverState *chr,
2637 Error *err)
2638{
2639 TCPCharDriver *s = chr->opaque;
2640
2641 if (!s->connect_err_reported) {
2642 error_report("Unable to connect character device %s: %s",
2643 chr->label, error_get_pretty(err));
2644 s->connect_err_reported = true;
2645 }
2646 qemu_chr_socket_restart_timer(chr);
2647}
2648
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002649static gboolean tcp_chr_accept(QIOChannel *chan,
2650 GIOCondition cond,
2651 void *opaque);
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +03002652
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02002653/* Called with chr_write_lock held. */
aliguori6f97dba2008-10-31 18:49:55 +00002654static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2655{
2656 TCPCharDriver *s = chr->opaque;
2657 if (s->connected) {
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002658 int ret = io_channel_send_full(s->ioc, buf, len,
2659 s->write_msgfds,
2660 s->write_msgfds_num);
2661
2662 /* free the written msgfds, no matter what */
2663 if (s->write_msgfds_num) {
2664 g_free(s->write_msgfds);
2665 s->write_msgfds = 0;
2666 s->write_msgfds_num = 0;
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +03002667 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002668
2669 return ret;
Anthony Liguori455aa1e2012-09-05 13:52:49 -05002670 } else {
Anthony Liguori6db0fdc2012-09-12 14:34:07 -05002671 /* XXX: indicate an error ? */
Anthony Liguori455aa1e2012-09-05 13:52:49 -05002672 return len;
aliguori6f97dba2008-10-31 18:49:55 +00002673 }
2674}
2675
2676static int tcp_chr_read_poll(void *opaque)
2677{
2678 CharDriverState *chr = opaque;
2679 TCPCharDriver *s = chr->opaque;
2680 if (!s->connected)
2681 return 0;
Anthony Liguori909cda12011-08-15 11:17:31 -05002682 s->max_size = qemu_chr_be_can_write(chr);
aliguori6f97dba2008-10-31 18:49:55 +00002683 return s->max_size;
2684}
2685
2686#define IAC 255
2687#define IAC_BREAK 243
2688static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2689 TCPCharDriver *s,
2690 uint8_t *buf, int *size)
2691{
2692 /* Handle any telnet client's basic IAC options to satisfy char by
2693 * char mode with no echo. All IAC options will be removed from
2694 * the buf and the do_telnetopt variable will be used to track the
2695 * state of the width of the IAC information.
2696 *
2697 * IAC commands come in sets of 3 bytes with the exception of the
2698 * "IAC BREAK" command and the double IAC.
2699 */
2700
2701 int i;
2702 int j = 0;
2703
2704 for (i = 0; i < *size; i++) {
2705 if (s->do_telnetopt > 1) {
2706 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2707 /* Double IAC means send an IAC */
2708 if (j != i)
2709 buf[j] = buf[i];
2710 j++;
2711 s->do_telnetopt = 1;
2712 } else {
2713 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2714 /* Handle IAC break commands by sending a serial break */
Hans de Goedea425d232011-11-19 10:22:43 +01002715 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
aliguori6f97dba2008-10-31 18:49:55 +00002716 s->do_telnetopt++;
2717 }
2718 s->do_telnetopt++;
2719 }
2720 if (s->do_telnetopt >= 4) {
2721 s->do_telnetopt = 1;
2722 }
2723 } else {
2724 if ((unsigned char)buf[i] == IAC) {
2725 s->do_telnetopt = 2;
2726 } else {
2727 if (j != i)
2728 buf[j] = buf[i];
2729 j++;
2730 }
2731 }
2732 }
2733 *size = j;
2734}
2735
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002736static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
Mark McLoughlin7d174052009-07-22 09:11:39 +01002737{
2738 TCPCharDriver *s = chr->opaque;
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002739 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2740
Michael S. Tsirkinc4095722014-11-02 18:48:32 +02002741 assert(num <= TCP_MAX_FDS);
2742
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002743 if (to_copy) {
Stefan Hajnoczid2fc39b2014-06-22 10:38:37 +08002744 int i;
2745
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002746 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2747
Stefan Hajnoczid2fc39b2014-06-22 10:38:37 +08002748 /* Close unused fds */
2749 for (i = to_copy; i < s->read_msgfds_num; i++) {
2750 close(s->read_msgfds[i]);
2751 }
2752
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002753 g_free(s->read_msgfds);
2754 s->read_msgfds = 0;
2755 s->read_msgfds_num = 0;
2756 }
2757
2758 return to_copy;
Mark McLoughlin7d174052009-07-22 09:11:39 +01002759}
2760
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +03002761static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2762{
2763 TCPCharDriver *s = chr->opaque;
2764
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002765 if (!qio_channel_has_feature(s->ioc,
2766 QIO_CHANNEL_FEATURE_FD_PASS)) {
2767 return -1;
2768 }
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +03002769 /* clear old pending fd array */
Daniel P. Berrangeef1e1e02015-08-26 12:17:18 +01002770 g_free(s->write_msgfds);
Marc-André Lureau869a58a2016-02-23 19:10:51 +01002771 s->write_msgfds = NULL;
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +03002772
2773 if (num) {
Markus Armbruster2d528d42015-09-14 13:54:03 +02002774 s->write_msgfds = g_new(int, num);
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +03002775 memcpy(s->write_msgfds, fds, num * sizeof(int));
2776 }
2777
2778 s->write_msgfds_num = num;
2779
2780 return 0;
2781}
2782
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002783static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
Mark McLoughlin7d174052009-07-22 09:11:39 +01002784{
2785 TCPCharDriver *s = chr->opaque;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002786 struct iovec iov = { .iov_base = buf, .iov_len = len };
2787 int ret;
2788 size_t i;
2789 int *msgfds = NULL;
2790 size_t msgfds_num = 0;
Mark McLoughlin7d174052009-07-22 09:11:39 +01002791
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002792 if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
2793 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2794 &msgfds, &msgfds_num,
2795 NULL);
2796 } else {
2797 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2798 NULL, NULL,
2799 NULL);
2800 }
Mark McLoughlin7d174052009-07-22 09:11:39 +01002801
Marc-André Lureaub6572b42016-03-11 18:55:24 +01002802 if (ret == QIO_CHANNEL_ERR_BLOCK) {
2803 errno = EAGAIN;
2804 ret = -1;
2805 } else if (ret == -1) {
2806 errno = EIO;
2807 }
2808
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002809 if (msgfds_num) {
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002810 /* close and clean read_msgfds */
2811 for (i = 0; i < s->read_msgfds_num; i++) {
2812 close(s->read_msgfds[i]);
2813 }
Stefan Hajnoczi9b938c72013-03-27 10:10:46 +01002814
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002815 if (s->read_msgfds_num) {
2816 g_free(s->read_msgfds);
2817 }
2818
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002819 s->read_msgfds = msgfds;
2820 s->read_msgfds_num = msgfds_num;
2821 }
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002822
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002823 for (i = 0; i < s->read_msgfds_num; i++) {
2824 int fd = s->read_msgfds[i];
2825 if (fd < 0) {
2826 continue;
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03002827 }
Mark McLoughlin7d174052009-07-22 09:11:39 +01002828
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002829 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2830 qemu_set_block(fd);
Mark McLoughlin9977c892009-07-22 09:11:38 +01002831
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002832#ifndef MSG_CMSG_CLOEXEC
2833 qemu_set_cloexec(fd);
Corey Bryant06138652012-08-14 16:43:42 -04002834#endif
Corey Bryant06138652012-08-14 16:43:42 -04002835 }
Mark McLoughlin7d174052009-07-22 09:11:39 +01002836
2837 return ret;
Mark McLoughlin9977c892009-07-22 09:11:38 +01002838}
Mark McLoughlin9977c892009-07-22 09:11:38 +01002839
Amit Shahd3cc5bc2013-03-05 23:21:25 +05302840static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2841{
2842 TCPCharDriver *s = chr->opaque;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002843 return qio_channel_create_watch(s->ioc, cond);
Amit Shahd3cc5bc2013-03-05 23:21:25 +05302844}
2845
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +03002846static void tcp_chr_disconnect(CharDriverState *chr)
2847{
2848 TCPCharDriver *s = chr->opaque;
2849
Marc-André Lureau342f7a92016-02-23 19:10:53 +01002850 if (!s->connected) {
2851 return;
2852 }
2853
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +03002854 s->connected = 0;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002855 if (s->listen_ioc) {
2856 s->listen_tag = qio_channel_add_watch(
2857 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +03002858 }
Marc-André Lureau6167ebb2016-02-23 19:10:52 +01002859 tcp_set_msgfds(chr, NULL, 0);
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +03002860 remove_fd_in_watch(chr);
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00002861 object_unref(OBJECT(s->sioc));
2862 s->sioc = NULL;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002863 object_unref(OBJECT(s->ioc));
2864 s->ioc = NULL;
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00002865 g_free(chr->filename);
2866 chr->filename = SocketAddress_to_str("disconnected:", s->addr,
2867 s->is_listen, s->is_telnet);
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +03002868 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
Corey Minyard5dd1f022014-10-02 11:17:37 -05002869 if (s->reconnect_time) {
2870 qemu_chr_socket_restart_timer(chr);
2871 }
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +03002872}
2873
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002874static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
aliguori6f97dba2008-10-31 18:49:55 +00002875{
2876 CharDriverState *chr = opaque;
2877 TCPCharDriver *s = chr->opaque;
Amit Shah9bd78542009-11-03 19:59:54 +05302878 uint8_t buf[READ_BUF_LEN];
aliguori6f97dba2008-10-31 18:49:55 +00002879 int len, size;
2880
Anthony Liguori2ea5a7a2013-03-05 23:21:22 +05302881 if (!s->connected || s->max_size <= 0) {
Paolo Bonzinicdbf6e12013-04-19 17:32:08 +02002882 return TRUE;
Anthony Liguori2ea5a7a2013-03-05 23:21:22 +05302883 }
aliguori6f97dba2008-10-31 18:49:55 +00002884 len = sizeof(buf);
2885 if (len > s->max_size)
2886 len = s->max_size;
Mark McLoughlin9977c892009-07-22 09:11:38 +01002887 size = tcp_chr_recv(chr, (void *)buf, len);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002888 if (size == 0 || size == -1) {
aliguori6f97dba2008-10-31 18:49:55 +00002889 /* connection closed */
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +03002890 tcp_chr_disconnect(chr);
aliguori6f97dba2008-10-31 18:49:55 +00002891 } else if (size > 0) {
2892 if (s->do_telnetopt)
2893 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2894 if (size > 0)
Anthony Liguorifa5efcc2011-08-15 11:17:30 -05002895 qemu_chr_be_write(chr, buf, size);
aliguori6f97dba2008-10-31 18:49:55 +00002896 }
Anthony Liguori2ea5a7a2013-03-05 23:21:22 +05302897
2898 return TRUE;
aliguori6f97dba2008-10-31 18:49:55 +00002899}
2900
Nikolay Nikolaev7b0bfdf2014-05-27 15:03:48 +03002901static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
2902{
2903 TCPCharDriver *s = chr->opaque;
2904 int size;
2905
2906 if (!s->connected) {
2907 return 0;
2908 }
2909
2910 size = tcp_chr_recv(chr, (void *) buf, len);
2911 if (size == 0) {
2912 /* connection closed */
2913 tcp_chr_disconnect(chr);
2914 }
2915
2916 return size;
2917}
2918
aliguori6f97dba2008-10-31 18:49:55 +00002919static void tcp_chr_connect(void *opaque)
2920{
2921 CharDriverState *chr = opaque;
2922 TCPCharDriver *s = chr->opaque;
Corey Minyard16cc4ff2014-10-02 11:17:36 -05002923
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00002924 g_free(chr->filename);
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00002925 chr->filename = sockaddr_to_str(
2926 &s->sioc->localAddr, s->sioc->localAddrLen,
2927 &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
2928 s->is_listen, s->is_telnet);
aliguori6f97dba2008-10-31 18:49:55 +00002929
2930 s->connected = 1;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002931 if (s->ioc) {
2932 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2933 tcp_chr_read_poll,
Amit Shah7ba9add2013-08-28 15:18:29 +05302934 tcp_chr_read, chr);
David Gibsonbbdd2ad2012-09-10 12:30:56 +10002935 }
Hans de Goedefee204f2013-03-26 11:07:54 +01002936 qemu_chr_be_generic_open(chr);
aliguori6f97dba2008-10-31 18:49:55 +00002937}
2938
Gal Hammerac1b84d2014-02-25 12:12:35 +02002939static void tcp_chr_update_read_handler(CharDriverState *chr)
2940{
2941 TCPCharDriver *s = chr->opaque;
2942
Daniel P. Berrange1e94f232016-02-08 13:55:07 +00002943 if (!s->connected) {
2944 return;
2945 }
2946
Gal Hammerac1b84d2014-02-25 12:12:35 +02002947 remove_fd_in_watch(chr);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00002948 if (s->ioc) {
2949 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2950 tcp_chr_read_poll,
Gal Hammerac1b84d2014-02-25 12:12:35 +02002951 tcp_chr_read, chr);
2952 }
2953}
2954
Daniel P. Berrangef2001a72016-01-19 11:14:30 +00002955typedef struct {
2956 CharDriverState *chr;
2957 char buf[12];
2958 size_t buflen;
2959} TCPCharDriverTelnetInit;
2960
2961static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
2962 GIOCondition cond G_GNUC_UNUSED,
2963 gpointer user_data)
aliguori6f97dba2008-10-31 18:49:55 +00002964{
Daniel P. Berrangef2001a72016-01-19 11:14:30 +00002965 TCPCharDriverTelnetInit *init = user_data;
2966 ssize_t ret;
2967
2968 ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
2969 if (ret < 0) {
2970 if (ret == QIO_CHANNEL_ERR_BLOCK) {
2971 ret = 0;
2972 } else {
2973 tcp_chr_disconnect(init->chr);
2974 return FALSE;
2975 }
2976 }
2977 init->buflen -= ret;
2978
2979 if (init->buflen == 0) {
2980 tcp_chr_connect(init->chr);
2981 return FALSE;
2982 }
2983
2984 memmove(init->buf, init->buf + ret, init->buflen);
2985
2986 return TRUE;
2987}
2988
2989static void tcp_chr_telnet_init(CharDriverState *chr)
2990{
2991 TCPCharDriver *s = chr->opaque;
2992 TCPCharDriverTelnetInit *init =
2993 g_new0(TCPCharDriverTelnetInit, 1);
2994 size_t n = 0;
2995
2996 init->chr = chr;
2997 init->buflen = 12;
2998
2999#define IACSET(x, a, b, c) \
3000 do { \
3001 x[n++] = a; \
3002 x[n++] = b; \
3003 x[n++] = c; \
3004 } while (0)
3005
3006 /* Prep the telnet negotion to put telnet in binary,
3007 * no echo, single char mode */
3008 IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
3009 IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
3010 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
3011 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
3012
3013#undef IACSET
3014
3015 qio_channel_add_watch(
3016 s->ioc, G_IO_OUT,
3017 tcp_chr_telnet_init_io,
3018 init, NULL);
aliguori6f97dba2008-10-31 18:49:55 +00003019}
3020
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00003021
3022static void tcp_chr_tls_handshake(Object *source,
3023 Error *err,
3024 gpointer user_data)
3025{
3026 CharDriverState *chr = user_data;
3027 TCPCharDriver *s = chr->opaque;
3028
3029 if (err) {
3030 tcp_chr_disconnect(chr);
3031 } else {
3032 if (s->do_telnetopt) {
3033 tcp_chr_telnet_init(chr);
3034 } else {
3035 tcp_chr_connect(chr);
3036 }
3037 }
3038}
3039
3040
3041static void tcp_chr_tls_init(CharDriverState *chr)
3042{
3043 TCPCharDriver *s = chr->opaque;
3044 QIOChannelTLS *tioc;
3045 Error *err = NULL;
3046
3047 if (s->is_listen) {
3048 tioc = qio_channel_tls_new_server(
3049 s->ioc, s->tls_creds,
3050 NULL, /* XXX Use an ACL */
3051 &err);
3052 } else {
3053 tioc = qio_channel_tls_new_client(
3054 s->ioc, s->tls_creds,
Eric Blake32bafa82016-03-17 16:48:37 -06003055 s->addr->u.inet.data->host,
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00003056 &err);
3057 }
3058 if (tioc == NULL) {
3059 error_free(err);
3060 tcp_chr_disconnect(chr);
3061 }
3062 object_unref(OBJECT(s->ioc));
3063 s->ioc = QIO_CHANNEL(tioc);
3064
3065 qio_channel_tls_handshake(tioc,
3066 tcp_chr_tls_handshake,
3067 chr,
3068 NULL);
3069}
3070
3071
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003072static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc)
Daniel P. Berrange13661082011-06-23 13:31:42 +01003073{
3074 TCPCharDriver *s = chr->opaque;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003075 if (s->ioc != NULL) {
Daniel P. Berrange13661082011-06-23 13:31:42 +01003076 return -1;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003077 }
Daniel P. Berrange13661082011-06-23 13:31:42 +01003078
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003079 s->ioc = QIO_CHANNEL(sioc);
3080 object_ref(OBJECT(sioc));
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00003081 s->sioc = sioc;
3082 object_ref(OBJECT(sioc));
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003083
3084 if (s->do_nodelay) {
3085 qio_channel_set_delay(s->ioc, false);
3086 }
Paolo Bonzini910b6362013-04-19 17:32:06 +02003087 if (s->listen_tag) {
3088 g_source_remove(s->listen_tag);
3089 s->listen_tag = 0;
3090 }
Daniel P. Berrangef2001a72016-01-19 11:14:30 +00003091
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00003092 if (s->tls_creds) {
3093 tcp_chr_tls_init(chr);
Daniel P. Berrangef2001a72016-01-19 11:14:30 +00003094 } else {
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00003095 if (s->do_telnetopt) {
3096 tcp_chr_telnet_init(chr);
3097 } else {
3098 tcp_chr_connect(chr);
3099 }
Daniel P. Berrangef2001a72016-01-19 11:14:30 +00003100 }
Daniel P. Berrange13661082011-06-23 13:31:42 +01003101
3102 return 0;
3103}
3104
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003105
3106static int tcp_chr_add_client(CharDriverState *chr, int fd)
3107{
3108 int ret;
3109 QIOChannelSocket *sioc;
3110
3111 sioc = qio_channel_socket_new_fd(fd, NULL);
3112 if (!sioc) {
3113 return -1;
3114 }
3115 qio_channel_set_blocking(QIO_CHANNEL(sioc), false, NULL);
3116 ret = tcp_chr_new_client(chr, sioc);
3117 object_unref(OBJECT(sioc));
3118 return ret;
3119}
3120
3121static gboolean tcp_chr_accept(QIOChannel *channel,
3122 GIOCondition cond,
3123 void *opaque)
aliguori6f97dba2008-10-31 18:49:55 +00003124{
3125 CharDriverState *chr = opaque;
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003126 QIOChannelSocket *sioc;
aliguori6f97dba2008-10-31 18:49:55 +00003127
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003128 sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
3129 NULL);
3130 if (!sioc) {
3131 return TRUE;
aliguori6f97dba2008-10-31 18:49:55 +00003132 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003133
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003134 tcp_chr_new_client(chr, sioc);
3135
3136 object_unref(OBJECT(sioc));
Anthony Liguori2ea5a7a2013-03-05 23:21:22 +05303137
3138 return TRUE;
aliguori6f97dba2008-10-31 18:49:55 +00003139}
3140
3141static void tcp_chr_close(CharDriverState *chr)
3142{
3143 TCPCharDriver *s = chr->opaque;
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03003144 int i;
Corey Minyardcfb429c2014-10-02 11:17:35 -05003145
Corey Minyard5dd1f022014-10-02 11:17:37 -05003146 if (s->reconnect_timer) {
3147 g_source_remove(s->reconnect_timer);
3148 s->reconnect_timer = 0;
3149 }
Corey Minyardcfb429c2014-10-02 11:17:35 -05003150 qapi_free_SocketAddress(s->addr);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003151 remove_fd_in_watch(chr);
3152 if (s->ioc) {
3153 object_unref(OBJECT(s->ioc));
aliguori819f56b2009-03-28 17:58:14 +00003154 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003155 if (s->listen_tag) {
3156 g_source_remove(s->listen_tag);
3157 s->listen_tag = 0;
3158 }
3159 if (s->listen_ioc) {
3160 object_unref(OBJECT(s->listen_ioc));
aliguori819f56b2009-03-28 17:58:14 +00003161 }
Nikolay Nikolaevc76bf6b2014-05-27 15:04:15 +03003162 if (s->read_msgfds_num) {
3163 for (i = 0; i < s->read_msgfds_num; i++) {
3164 close(s->read_msgfds[i]);
3165 }
3166 g_free(s->read_msgfds);
3167 }
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00003168 if (s->tls_creds) {
3169 object_unref(OBJECT(s->tls_creds));
3170 }
Nikolay Nikolaevd39aac72014-05-27 15:04:02 +03003171 if (s->write_msgfds_num) {
3172 g_free(s->write_msgfds);
3173 }
Anthony Liguori7267c092011-08-20 22:09:37 -05003174 g_free(s);
Hans de Goedea425d232011-11-19 10:22:43 +01003175 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
aliguori6f97dba2008-10-31 18:49:55 +00003176}
3177
Corey Minyard43ded1a2014-10-02 11:17:34 -05003178
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003179static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
Corey Minyard5dd1f022014-10-02 11:17:37 -05003180{
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003181 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
Corey Minyard5dd1f022014-10-02 11:17:37 -05003182 CharDriverState *chr = opaque;
Corey Minyard5008e5b2014-10-08 07:11:55 -05003183 TCPCharDriver *s = chr->opaque;
Corey Minyard5dd1f022014-10-02 11:17:37 -05003184
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003185 if (err) {
Corey Minyard5008e5b2014-10-08 07:11:55 -05003186 check_report_connect_error(chr, err);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00003187 object_unref(src);
Corey Minyard5dd1f022014-10-02 11:17:37 -05003188 return;
3189 }
3190
Corey Minyard5008e5b2014-10-08 07:11:55 -05003191 s->connect_err_reported = false;
Daniel P. Berrangef50dfe42016-03-09 16:42:28 +00003192 tcp_chr_new_client(chr, sioc);
3193 object_unref(OBJECT(sioc));
Corey Minyard5dd1f022014-10-02 11:17:37 -05003194}
3195
Gerd Hoffmannf6bd5d62012-12-20 13:53:12 +01003196
Lei Li51767e72013-01-25 00:03:19 +08003197/*********************************************************/
Markus Armbruster3949e592013-02-06 21:27:24 +01003198/* Ring buffer chardev */
Lei Li51767e72013-01-25 00:03:19 +08003199
3200typedef struct {
3201 size_t size;
3202 size_t prod;
3203 size_t cons;
3204 uint8_t *cbuf;
Markus Armbruster3949e592013-02-06 21:27:24 +01003205} RingBufCharDriver;
Lei Li51767e72013-01-25 00:03:19 +08003206
Markus Armbruster3949e592013-02-06 21:27:24 +01003207static size_t ringbuf_count(const CharDriverState *chr)
Lei Li51767e72013-01-25 00:03:19 +08003208{
Markus Armbruster3949e592013-02-06 21:27:24 +01003209 const RingBufCharDriver *d = chr->opaque;
Lei Li51767e72013-01-25 00:03:19 +08003210
Markus Armbruster5c230102013-02-06 21:27:23 +01003211 return d->prod - d->cons;
Lei Li51767e72013-01-25 00:03:19 +08003212}
3213
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02003214/* Called with chr_write_lock held. */
Markus Armbruster3949e592013-02-06 21:27:24 +01003215static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
Lei Li51767e72013-01-25 00:03:19 +08003216{
Markus Armbruster3949e592013-02-06 21:27:24 +01003217 RingBufCharDriver *d = chr->opaque;
Lei Li51767e72013-01-25 00:03:19 +08003218 int i;
3219
3220 if (!buf || (len < 0)) {
3221 return -1;
3222 }
3223
3224 for (i = 0; i < len; i++ ) {
Markus Armbruster5c230102013-02-06 21:27:23 +01003225 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3226 if (d->prod - d->cons > d->size) {
Lei Li51767e72013-01-25 00:03:19 +08003227 d->cons = d->prod - d->size;
3228 }
3229 }
3230
3231 return 0;
3232}
3233
Markus Armbruster3949e592013-02-06 21:27:24 +01003234static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
Lei Li51767e72013-01-25 00:03:19 +08003235{
Markus Armbruster3949e592013-02-06 21:27:24 +01003236 RingBufCharDriver *d = chr->opaque;
Lei Li51767e72013-01-25 00:03:19 +08003237 int i;
3238
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02003239 qemu_mutex_lock(&chr->chr_write_lock);
Markus Armbruster5c230102013-02-06 21:27:23 +01003240 for (i = 0; i < len && d->cons != d->prod; i++) {
3241 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
Lei Li51767e72013-01-25 00:03:19 +08003242 }
Paolo Bonzini9005b2a2014-06-18 08:43:58 +02003243 qemu_mutex_unlock(&chr->chr_write_lock);
Lei Li51767e72013-01-25 00:03:19 +08003244
3245 return i;
3246}
3247
Markus Armbruster3949e592013-02-06 21:27:24 +01003248static void ringbuf_chr_close(struct CharDriverState *chr)
Lei Li51767e72013-01-25 00:03:19 +08003249{
Markus Armbruster3949e592013-02-06 21:27:24 +01003250 RingBufCharDriver *d = chr->opaque;
Lei Li51767e72013-01-25 00:03:19 +08003251
3252 g_free(d->cbuf);
3253 g_free(d);
3254 chr->opaque = NULL;
3255}
3256
Paolo Bonzini479f09a2015-09-29 15:51:14 +02003257static CharDriverState *qemu_chr_open_ringbuf(const char *id,
3258 ChardevBackend *backend,
3259 ChardevReturn *ret,
Markus Armbruster4f573782013-07-26 16:44:32 +02003260 Error **errp)
Lei Li51767e72013-01-25 00:03:19 +08003261{
Eric Blake32bafa82016-03-17 16:48:37 -06003262 ChardevRingbuf *opts = backend->u.ringbuf.data;
Eric Blakef194a1a2016-03-03 09:16:47 -07003263 ChardevCommon *common = qapi_ChardevRingbuf_base(opts);
Lei Li51767e72013-01-25 00:03:19 +08003264 CharDriverState *chr;
Markus Armbruster3949e592013-02-06 21:27:24 +01003265 RingBufCharDriver *d;
Lei Li51767e72013-01-25 00:03:19 +08003266
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003267 chr = qemu_chr_alloc(common, errp);
3268 if (!chr) {
3269 return NULL;
3270 }
Lei Li51767e72013-01-25 00:03:19 +08003271 d = g_malloc(sizeof(*d));
3272
Gerd Hoffmann1da48c62013-02-26 16:21:11 +01003273 d->size = opts->has_size ? opts->size : 65536;
Lei Li51767e72013-01-25 00:03:19 +08003274
3275 /* The size must be power of 2 */
3276 if (d->size & (d->size - 1)) {
Markus Armbruster4f573782013-07-26 16:44:32 +02003277 error_setg(errp, "size of ringbuf chardev must be power of two");
Lei Li51767e72013-01-25 00:03:19 +08003278 goto fail;
3279 }
3280
3281 d->prod = 0;
3282 d->cons = 0;
3283 d->cbuf = g_malloc0(d->size);
3284
3285 chr->opaque = d;
Markus Armbruster3949e592013-02-06 21:27:24 +01003286 chr->chr_write = ringbuf_chr_write;
3287 chr->chr_close = ringbuf_chr_close;
Lei Li51767e72013-01-25 00:03:19 +08003288
3289 return chr;
3290
3291fail:
3292 g_free(d);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003293 qemu_chr_free_common(chr);
Lei Li51767e72013-01-25 00:03:19 +08003294 return NULL;
3295}
3296
Hani Benhabiles8e597772014-05-27 23:39:30 +01003297bool chr_is_ringbuf(const CharDriverState *chr)
Lei Li1f590cf2013-01-25 00:03:20 +08003298{
Markus Armbruster3949e592013-02-06 21:27:24 +01003299 return chr->chr_write == ringbuf_chr_write;
Lei Li1f590cf2013-01-25 00:03:20 +08003300}
3301
Markus Armbruster3949e592013-02-06 21:27:24 +01003302void qmp_ringbuf_write(const char *device, const char *data,
Markus Armbruster82e59a62013-02-06 21:27:14 +01003303 bool has_format, enum DataFormat format,
Lei Li1f590cf2013-01-25 00:03:20 +08003304 Error **errp)
3305{
3306 CharDriverState *chr;
Markus Armbrusterc4f331b2013-02-06 21:27:17 +01003307 const uint8_t *write_data;
Lei Li1f590cf2013-01-25 00:03:20 +08003308 int ret;
Peter Crosthwaite3d1bba22013-05-22 13:01:43 +10003309 gsize write_count;
Lei Li1f590cf2013-01-25 00:03:20 +08003310
3311 chr = qemu_chr_find(device);
3312 if (!chr) {
Markus Armbruster1a692782013-02-06 21:27:16 +01003313 error_setg(errp, "Device '%s' not found", device);
Lei Li1f590cf2013-01-25 00:03:20 +08003314 return;
3315 }
3316
Markus Armbruster3949e592013-02-06 21:27:24 +01003317 if (!chr_is_ringbuf(chr)) {
3318 error_setg(errp,"%s is not a ringbuf device", device);
Lei Li1f590cf2013-01-25 00:03:20 +08003319 return;
3320 }
3321
Lei Li1f590cf2013-01-25 00:03:20 +08003322 if (has_format && (format == DATA_FORMAT_BASE64)) {
Daniel P. Berrangee9cf2fe2015-11-23 15:29:59 +00003323 write_data = qbase64_decode(data, -1,
3324 &write_count,
3325 errp);
3326 if (!write_data) {
3327 return;
3328 }
Lei Li1f590cf2013-01-25 00:03:20 +08003329 } else {
3330 write_data = (uint8_t *)data;
Markus Armbruster82e59a62013-02-06 21:27:14 +01003331 write_count = strlen(data);
Lei Li1f590cf2013-01-25 00:03:20 +08003332 }
3333
Markus Armbruster3949e592013-02-06 21:27:24 +01003334 ret = ringbuf_chr_write(chr, write_data, write_count);
Lei Li1f590cf2013-01-25 00:03:20 +08003335
Markus Armbruster13289fb2013-02-06 21:27:18 +01003336 if (write_data != (uint8_t *)data) {
3337 g_free((void *)write_data);
3338 }
3339
Lei Li1f590cf2013-01-25 00:03:20 +08003340 if (ret < 0) {
3341 error_setg(errp, "Failed to write to device %s", device);
3342 return;
3343 }
3344}
3345
Markus Armbruster3949e592013-02-06 21:27:24 +01003346char *qmp_ringbuf_read(const char *device, int64_t size,
Markus Armbruster3ab651f2013-02-06 21:27:15 +01003347 bool has_format, enum DataFormat format,
3348 Error **errp)
Lei Li49b6d722013-01-25 00:03:21 +08003349{
3350 CharDriverState *chr;
Markus Armbrusterc4f331b2013-02-06 21:27:17 +01003351 uint8_t *read_data;
Lei Li49b6d722013-01-25 00:03:21 +08003352 size_t count;
Markus Armbruster3ab651f2013-02-06 21:27:15 +01003353 char *data;
Lei Li49b6d722013-01-25 00:03:21 +08003354
3355 chr = qemu_chr_find(device);
3356 if (!chr) {
Markus Armbruster1a692782013-02-06 21:27:16 +01003357 error_setg(errp, "Device '%s' not found", device);
Lei Li49b6d722013-01-25 00:03:21 +08003358 return NULL;
3359 }
3360
Markus Armbruster3949e592013-02-06 21:27:24 +01003361 if (!chr_is_ringbuf(chr)) {
3362 error_setg(errp,"%s is not a ringbuf device", device);
Lei Li49b6d722013-01-25 00:03:21 +08003363 return NULL;
3364 }
3365
3366 if (size <= 0) {
3367 error_setg(errp, "size must be greater than zero");
3368 return NULL;
3369 }
3370
Markus Armbruster3949e592013-02-06 21:27:24 +01003371 count = ringbuf_count(chr);
Lei Li49b6d722013-01-25 00:03:21 +08003372 size = size > count ? count : size;
Markus Armbruster44f3bcd2013-02-06 21:27:20 +01003373 read_data = g_malloc(size + 1);
Lei Li49b6d722013-01-25 00:03:21 +08003374
Markus Armbruster3949e592013-02-06 21:27:24 +01003375 ringbuf_chr_read(chr, read_data, size);
Lei Li49b6d722013-01-25 00:03:21 +08003376
3377 if (has_format && (format == DATA_FORMAT_BASE64)) {
Markus Armbruster3ab651f2013-02-06 21:27:15 +01003378 data = g_base64_encode(read_data, size);
Markus Armbruster13289fb2013-02-06 21:27:18 +01003379 g_free(read_data);
Lei Li49b6d722013-01-25 00:03:21 +08003380 } else {
Markus Armbruster3949e592013-02-06 21:27:24 +01003381 /*
3382 * FIXME should read only complete, valid UTF-8 characters up
3383 * to @size bytes. Invalid sequences should be replaced by a
3384 * suitable replacement character. Except when (and only
3385 * when) ring buffer lost characters since last read, initial
3386 * continuation characters should be dropped.
3387 */
Markus Armbruster44f3bcd2013-02-06 21:27:20 +01003388 read_data[size] = 0;
Markus Armbruster3ab651f2013-02-06 21:27:15 +01003389 data = (char *)read_data;
Lei Li49b6d722013-01-25 00:03:21 +08003390 }
3391
Markus Armbruster3ab651f2013-02-06 21:27:15 +01003392 return data;
Lei Li49b6d722013-01-25 00:03:21 +08003393}
3394
Gerd Hoffmann33521632009-12-08 13:11:49 +01003395QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003396{
Gerd Hoffmann6ea314d2009-09-10 10:58:49 +02003397 char host[65], port[33], width[8], height[8];
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003398 int pos;
Gerd Hoffmann7d315442009-09-10 10:58:36 +02003399 const char *p;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003400 QemuOpts *opts;
Luiz Capitulino8be7e7e2012-03-20 15:51:57 -03003401 Error *local_err = NULL;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003402
Luiz Capitulino8be7e7e2012-03-20 15:51:57 -03003403 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01003404 if (local_err) {
Markus Armbruster33394882015-02-10 15:21:26 +01003405 error_report_err(local_err);
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003406 return NULL;
Luiz Capitulino8be7e7e2012-03-20 15:51:57 -03003407 }
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003408
Gerd Hoffmann7591c5c2009-09-10 10:58:50 +02003409 if (strstart(filename, "mon:", &p)) {
3410 filename = p;
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003411 qemu_opt_set(opts, "mux", "on", &error_abort);
Paolo Bonzini02c4bdf2013-07-03 20:29:45 +04003412 if (strcmp(filename, "stdio") == 0) {
3413 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3414 * but pass it to the guest. Handle this only for compat syntax,
3415 * for -chardev syntax we have special option for this.
3416 * This is what -nographic did, redirecting+muxing serial+monitor
3417 * to stdio causing Ctrl+C to be passed to guest. */
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003418 qemu_opt_set(opts, "signal", "off", &error_abort);
Paolo Bonzini02c4bdf2013-07-03 20:29:45 +04003419 }
Gerd Hoffmann7591c5c2009-09-10 10:58:50 +02003420 }
3421
Gerd Hoffmannf0457e82009-09-10 10:58:45 +02003422 if (strcmp(filename, "null") == 0 ||
3423 strcmp(filename, "pty") == 0 ||
3424 strcmp(filename, "msmouse") == 0 ||
Gerd Hoffmanndc1c21e2009-09-10 10:58:46 +02003425 strcmp(filename, "braille") == 0 ||
Paolo Bonzini56923992014-07-11 09:44:26 +02003426 strcmp(filename, "testdev") == 0 ||
Gerd Hoffmannf0457e82009-09-10 10:58:45 +02003427 strcmp(filename, "stdio") == 0) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003428 qemu_opt_set(opts, "backend", filename, &error_abort);
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003429 return opts;
3430 }
Gerd Hoffmann6ea314d2009-09-10 10:58:49 +02003431 if (strstart(filename, "vc", &p)) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003432 qemu_opt_set(opts, "backend", "vc", &error_abort);
Gerd Hoffmann6ea314d2009-09-10 10:58:49 +02003433 if (*p == ':') {
Stefan Weil49aa4052013-09-30 23:04:49 +02003434 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
Gerd Hoffmann6ea314d2009-09-10 10:58:49 +02003435 /* pixels */
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003436 qemu_opt_set(opts, "width", width, &error_abort);
3437 qemu_opt_set(opts, "height", height, &error_abort);
Stefan Weil49aa4052013-09-30 23:04:49 +02003438 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
Gerd Hoffmann6ea314d2009-09-10 10:58:49 +02003439 /* chars */
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003440 qemu_opt_set(opts, "cols", width, &error_abort);
3441 qemu_opt_set(opts, "rows", height, &error_abort);
Gerd Hoffmann6ea314d2009-09-10 10:58:49 +02003442 } else {
3443 goto fail;
3444 }
3445 }
3446 return opts;
3447 }
Gerd Hoffmannd6c983c2009-09-10 10:58:47 +02003448 if (strcmp(filename, "con:") == 0) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003449 qemu_opt_set(opts, "backend", "console", &error_abort);
Gerd Hoffmannd6c983c2009-09-10 10:58:47 +02003450 return opts;
3451 }
Gerd Hoffmann48b76492009-09-10 10:58:48 +02003452 if (strstart(filename, "COM", NULL)) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003453 qemu_opt_set(opts, "backend", "serial", &error_abort);
3454 qemu_opt_set(opts, "path", filename, &error_abort);
Gerd Hoffmann48b76492009-09-10 10:58:48 +02003455 return opts;
3456 }
Gerd Hoffmann7d315442009-09-10 10:58:36 +02003457 if (strstart(filename, "file:", &p)) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003458 qemu_opt_set(opts, "backend", "file", &error_abort);
3459 qemu_opt_set(opts, "path", p, &error_abort);
Gerd Hoffmann7d315442009-09-10 10:58:36 +02003460 return opts;
3461 }
3462 if (strstart(filename, "pipe:", &p)) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003463 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3464 qemu_opt_set(opts, "path", p, &error_abort);
Gerd Hoffmann7d315442009-09-10 10:58:36 +02003465 return opts;
3466 }
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003467 if (strstart(filename, "tcp:", &p) ||
3468 strstart(filename, "telnet:", &p)) {
3469 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3470 host[0] = 0;
3471 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3472 goto fail;
3473 }
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003474 qemu_opt_set(opts, "backend", "socket", &error_abort);
3475 qemu_opt_set(opts, "host", host, &error_abort);
3476 qemu_opt_set(opts, "port", port, &error_abort);
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003477 if (p[pos] == ',') {
Markus Armbrusterdc523cd342015-02-12 18:37:11 +01003478 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3479 if (local_err) {
3480 error_report_err(local_err);
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003481 goto fail;
Markus Armbrusterdc523cd342015-02-12 18:37:11 +01003482 }
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003483 }
3484 if (strstart(filename, "telnet:", &p))
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003485 qemu_opt_set(opts, "telnet", "on", &error_abort);
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003486 return opts;
3487 }
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003488 if (strstart(filename, "udp:", &p)) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003489 qemu_opt_set(opts, "backend", "udp", &error_abort);
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003490 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3491 host[0] = 0;
Jan Kiszka39324ca2010-03-07 11:28:48 +01003492 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003493 goto fail;
3494 }
3495 }
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003496 qemu_opt_set(opts, "host", host, &error_abort);
3497 qemu_opt_set(opts, "port", port, &error_abort);
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003498 if (p[pos] == '@') {
3499 p += pos + 1;
3500 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3501 host[0] = 0;
3502 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003503 goto fail;
3504 }
3505 }
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003506 qemu_opt_set(opts, "localaddr", host, &error_abort);
3507 qemu_opt_set(opts, "localport", port, &error_abort);
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003508 }
3509 return opts;
3510 }
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003511 if (strstart(filename, "unix:", &p)) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003512 qemu_opt_set(opts, "backend", "socket", &error_abort);
Markus Armbrusterdc523cd342015-02-12 18:37:11 +01003513 qemu_opts_do_parse(opts, p, "path", &local_err);
3514 if (local_err) {
3515 error_report_err(local_err);
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003516 goto fail;
Markus Armbrusterdc523cd342015-02-12 18:37:11 +01003517 }
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003518 return opts;
3519 }
Gerd Hoffmann48b76492009-09-10 10:58:48 +02003520 if (strstart(filename, "/dev/parport", NULL) ||
3521 strstart(filename, "/dev/ppi", NULL)) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003522 qemu_opt_set(opts, "backend", "parport", &error_abort);
3523 qemu_opt_set(opts, "path", filename, &error_abort);
Gerd Hoffmann48b76492009-09-10 10:58:48 +02003524 return opts;
3525 }
3526 if (strstart(filename, "/dev/", NULL)) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01003527 qemu_opt_set(opts, "backend", "tty", &error_abort);
3528 qemu_opt_set(opts, "path", filename, &error_abort);
Gerd Hoffmann48b76492009-09-10 10:58:48 +02003529 return opts;
3530 }
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003531
Gerd Hoffmannaeb2c472009-09-10 10:58:42 +02003532fail:
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003533 qemu_opts_del(opts);
3534 return NULL;
3535}
3536
Eric Blake21a933e2016-02-19 17:19:31 -07003537void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003538{
3539 const char *logfile = qemu_opt_get(opts, "logfile");
3540
3541 backend->has_logfile = logfile != NULL;
3542 backend->logfile = logfile ? g_strdup(logfile) : NULL;
3543
3544 backend->has_logappend = true;
3545 backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
3546}
3547
3548
Gerd Hoffmann846e2e42013-02-21 12:07:14 +01003549static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3550 Error **errp)
3551{
3552 const char *path = qemu_opt_get(opts, "path");
Eric Blakef194a1a2016-03-03 09:16:47 -07003553 ChardevFile *file;
Gerd Hoffmann846e2e42013-02-21 12:07:14 +01003554
3555 if (path == NULL) {
3556 error_setg(errp, "chardev: file: no filename given");
3557 return;
3558 }
Eric Blake32bafa82016-03-17 16:48:37 -06003559 file = backend->u.file.data = g_new0(ChardevFile, 1);
Eric Blakef194a1a2016-03-03 09:16:47 -07003560 qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
3561 file->out = g_strdup(path);
Olga Krishtal31e38a22015-12-04 09:42:04 +03003562
Eric Blakef194a1a2016-03-03 09:16:47 -07003563 file->has_append = true;
3564 file->append = qemu_opt_get_bool(opts, "append", false);
Gerd Hoffmann846e2e42013-02-21 12:07:14 +01003565}
3566
Gerd Hoffmann7c358032013-02-21 12:34:58 +01003567static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3568 Error **errp)
3569{
Eric Blakef194a1a2016-03-03 09:16:47 -07003570 ChardevStdio *stdio;
3571
Eric Blake32bafa82016-03-17 16:48:37 -06003572 stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1);
Eric Blakef194a1a2016-03-03 09:16:47 -07003573 qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio));
3574 stdio->has_signal = true;
3575 stdio->signal = qemu_opt_get_bool(opts, "signal", true);
Gerd Hoffmann7c358032013-02-21 12:34:58 +01003576}
3577
Paolo Bonzini6511d392015-09-29 15:08:05 +02003578#ifdef HAVE_CHARDEV_SERIAL
Gerd Hoffmann0f1cb512013-02-22 15:48:05 +01003579static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3580 Error **errp)
3581{
3582 const char *device = qemu_opt_get(opts, "path");
Eric Blakef194a1a2016-03-03 09:16:47 -07003583 ChardevHostdev *serial;
Gerd Hoffmann0f1cb512013-02-22 15:48:05 +01003584
3585 if (device == NULL) {
3586 error_setg(errp, "chardev: serial/tty: no device path given");
3587 return;
3588 }
Eric Blake32bafa82016-03-17 16:48:37 -06003589 serial = backend->u.serial.data = g_new0(ChardevHostdev, 1);
Eric Blakef194a1a2016-03-03 09:16:47 -07003590 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial));
3591 serial->device = g_strdup(device);
Gerd Hoffmann0f1cb512013-02-22 15:48:05 +01003592}
Paolo Bonzini6511d392015-09-29 15:08:05 +02003593#endif
Gerd Hoffmann0f1cb512013-02-22 15:48:05 +01003594
Paolo Bonzini38bfb1a2015-10-12 09:49:28 +02003595#ifdef HAVE_CHARDEV_PARPORT
Gerd Hoffmanndc375092013-02-22 16:17:01 +01003596static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3597 Error **errp)
3598{
3599 const char *device = qemu_opt_get(opts, "path");
Eric Blakef194a1a2016-03-03 09:16:47 -07003600 ChardevHostdev *parallel;
Gerd Hoffmanndc375092013-02-22 16:17:01 +01003601
3602 if (device == NULL) {
3603 error_setg(errp, "chardev: parallel: no device path given");
3604 return;
3605 }
Eric Blake32bafa82016-03-17 16:48:37 -06003606 parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1);
Eric Blakef194a1a2016-03-03 09:16:47 -07003607 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
3608 parallel->device = g_strdup(device);
Gerd Hoffmanndc375092013-02-22 16:17:01 +01003609}
Paolo Bonzini38bfb1a2015-10-12 09:49:28 +02003610#endif
Gerd Hoffmanndc375092013-02-22 16:17:01 +01003611
Gerd Hoffmann548cbb32013-02-25 11:50:55 +01003612static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3613 Error **errp)
3614{
3615 const char *device = qemu_opt_get(opts, "path");
Eric Blakef194a1a2016-03-03 09:16:47 -07003616 ChardevHostdev *dev;
Gerd Hoffmann548cbb32013-02-25 11:50:55 +01003617
3618 if (device == NULL) {
3619 error_setg(errp, "chardev: pipe: no device path given");
3620 return;
3621 }
Eric Blake32bafa82016-03-17 16:48:37 -06003622 dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1);
Eric Blakef194a1a2016-03-03 09:16:47 -07003623 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
3624 dev->device = g_strdup(device);
Gerd Hoffmann548cbb32013-02-25 11:50:55 +01003625}
3626
Markus Armbruster4f573782013-07-26 16:44:32 +02003627static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3628 Error **errp)
Gerd Hoffmann1da48c62013-02-26 16:21:11 +01003629{
3630 int val;
Eric Blakef194a1a2016-03-03 09:16:47 -07003631 ChardevRingbuf *ringbuf;
Gerd Hoffmann1da48c62013-02-26 16:21:11 +01003632
Eric Blake32bafa82016-03-17 16:48:37 -06003633 ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1);
Eric Blakef194a1a2016-03-03 09:16:47 -07003634 qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
Gerd Hoffmann1da48c62013-02-26 16:21:11 +01003635
Markus Armbruster0f953052013-06-27 16:22:07 +02003636 val = qemu_opt_get_size(opts, "size", 0);
Gerd Hoffmann1da48c62013-02-26 16:21:11 +01003637 if (val != 0) {
Eric Blakef194a1a2016-03-03 09:16:47 -07003638 ringbuf->has_size = true;
3639 ringbuf->size = val;
Gerd Hoffmann1da48c62013-02-26 16:21:11 +01003640 }
3641}
3642
Gerd Hoffmannbb6fb7c2013-06-24 08:39:54 +02003643static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3644 Error **errp)
3645{
3646 const char *chardev = qemu_opt_get(opts, "chardev");
Eric Blakef194a1a2016-03-03 09:16:47 -07003647 ChardevMux *mux;
Gerd Hoffmannbb6fb7c2013-06-24 08:39:54 +02003648
3649 if (chardev == NULL) {
3650 error_setg(errp, "chardev: mux: no chardev given");
3651 return;
3652 }
Eric Blake32bafa82016-03-17 16:48:37 -06003653 mux = backend->u.mux.data = g_new0(ChardevMux, 1);
Eric Blakef194a1a2016-03-03 09:16:47 -07003654 qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux));
3655 mux->chardev = g_strdup(chardev);
Gerd Hoffmannbb6fb7c2013-06-24 08:39:54 +02003656}
3657
Peter Maydelldafd3252014-09-02 11:24:13 +01003658static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3659 Error **errp)
3660{
3661 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3662 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3663 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3664 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
Corey Minyard5dd1f022014-10-02 11:17:37 -05003665 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
Peter Maydelldafd3252014-09-02 11:24:13 +01003666 const char *path = qemu_opt_get(opts, "path");
3667 const char *host = qemu_opt_get(opts, "host");
3668 const char *port = qemu_opt_get(opts, "port");
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00003669 const char *tls_creds = qemu_opt_get(opts, "tls-creds");
Peter Maydelldafd3252014-09-02 11:24:13 +01003670 SocketAddress *addr;
Eric Blakef194a1a2016-03-03 09:16:47 -07003671 ChardevSocket *sock;
Peter Maydelldafd3252014-09-02 11:24:13 +01003672
3673 if (!path) {
3674 if (!host) {
3675 error_setg(errp, "chardev: socket: no host given");
3676 return;
3677 }
3678 if (!port) {
3679 error_setg(errp, "chardev: socket: no port given");
3680 return;
3681 }
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00003682 } else {
3683 if (tls_creds) {
3684 error_setg(errp, "TLS can only be used over TCP socket");
3685 return;
3686 }
Peter Maydelldafd3252014-09-02 11:24:13 +01003687 }
3688
Eric Blake32bafa82016-03-17 16:48:37 -06003689 sock = backend->u.socket.data = g_new0(ChardevSocket, 1);
Eric Blakef194a1a2016-03-03 09:16:47 -07003690 qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock));
Peter Maydelldafd3252014-09-02 11:24:13 +01003691
Eric Blakef194a1a2016-03-03 09:16:47 -07003692 sock->has_nodelay = true;
3693 sock->nodelay = do_nodelay;
3694 sock->has_server = true;
3695 sock->server = is_listen;
3696 sock->has_telnet = true;
3697 sock->telnet = is_telnet;
3698 sock->has_wait = true;
3699 sock->wait = is_waitconnect;
3700 sock->has_reconnect = true;
3701 sock->reconnect = reconnect;
3702 sock->tls_creds = g_strdup(tls_creds);
Peter Maydelldafd3252014-09-02 11:24:13 +01003703
3704 addr = g_new0(SocketAddress, 1);
3705 if (path) {
Eric Blake03992932016-03-03 09:16:48 -07003706 UnixSocketAddress *q_unix;
Eric Blake130257d2015-10-26 16:34:57 -06003707 addr->type = SOCKET_ADDRESS_KIND_UNIX;
Eric Blake32bafa82016-03-17 16:48:37 -06003708 q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1);
Eric Blake03992932016-03-03 09:16:48 -07003709 q_unix->path = g_strdup(path);
Peter Maydelldafd3252014-09-02 11:24:13 +01003710 } else {
Eric Blake130257d2015-10-26 16:34:57 -06003711 addr->type = SOCKET_ADDRESS_KIND_INET;
Eric Blake32bafa82016-03-17 16:48:37 -06003712 addr->u.inet.data = g_new(InetSocketAddress, 1);
3713 *addr->u.inet.data = (InetSocketAddress) {
Eric Blake03992932016-03-03 09:16:48 -07003714 .host = g_strdup(host),
3715 .port = g_strdup(port),
3716 .has_to = qemu_opt_get(opts, "to"),
3717 .to = qemu_opt_get_number(opts, "to", 0),
3718 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3719 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3720 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3721 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3722 };
Peter Maydelldafd3252014-09-02 11:24:13 +01003723 }
Eric Blakef194a1a2016-03-03 09:16:47 -07003724 sock->addr = addr;
Peter Maydelldafd3252014-09-02 11:24:13 +01003725}
3726
Peter Maydell90a14bf2014-09-02 11:24:15 +01003727static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3728 Error **errp)
3729{
3730 const char *host = qemu_opt_get(opts, "host");
3731 const char *port = qemu_opt_get(opts, "port");
3732 const char *localaddr = qemu_opt_get(opts, "localaddr");
3733 const char *localport = qemu_opt_get(opts, "localport");
3734 bool has_local = false;
3735 SocketAddress *addr;
Eric Blakef194a1a2016-03-03 09:16:47 -07003736 ChardevUdp *udp;
Peter Maydell90a14bf2014-09-02 11:24:15 +01003737
3738 if (host == NULL || strlen(host) == 0) {
3739 host = "localhost";
3740 }
3741 if (port == NULL || strlen(port) == 0) {
3742 error_setg(errp, "chardev: udp: remote port not specified");
3743 return;
3744 }
3745 if (localport == NULL || strlen(localport) == 0) {
3746 localport = "0";
3747 } else {
3748 has_local = true;
3749 }
3750 if (localaddr == NULL || strlen(localaddr) == 0) {
3751 localaddr = "";
3752 } else {
3753 has_local = true;
3754 }
3755
Eric Blake32bafa82016-03-17 16:48:37 -06003756 udp = backend->u.udp.data = g_new0(ChardevUdp, 1);
Eric Blakef194a1a2016-03-03 09:16:47 -07003757 qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp));
Peter Maydell90a14bf2014-09-02 11:24:15 +01003758
3759 addr = g_new0(SocketAddress, 1);
Eric Blake130257d2015-10-26 16:34:57 -06003760 addr->type = SOCKET_ADDRESS_KIND_INET;
Eric Blake32bafa82016-03-17 16:48:37 -06003761 addr->u.inet.data = g_new(InetSocketAddress, 1);
3762 *addr->u.inet.data = (InetSocketAddress) {
Eric Blake03992932016-03-03 09:16:48 -07003763 .host = g_strdup(host),
3764 .port = g_strdup(port),
3765 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3766 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3767 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3768 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3769 };
Eric Blakef194a1a2016-03-03 09:16:47 -07003770 udp->remote = addr;
Peter Maydell90a14bf2014-09-02 11:24:15 +01003771
3772 if (has_local) {
Eric Blakef194a1a2016-03-03 09:16:47 -07003773 udp->has_local = true;
Peter Maydell90a14bf2014-09-02 11:24:15 +01003774 addr = g_new0(SocketAddress, 1);
Eric Blake130257d2015-10-26 16:34:57 -06003775 addr->type = SOCKET_ADDRESS_KIND_INET;
Eric Blake32bafa82016-03-17 16:48:37 -06003776 addr->u.inet.data = g_new(InetSocketAddress, 1);
3777 *addr->u.inet.data = (InetSocketAddress) {
Eric Blake03992932016-03-03 09:16:48 -07003778 .host = g_strdup(localaddr),
3779 .port = g_strdup(localport),
3780 };
Eric Blakef194a1a2016-03-03 09:16:47 -07003781 udp->local = addr;
Peter Maydell90a14bf2014-09-02 11:24:15 +01003782 }
3783}
3784
Anthony Liguorid654f342013-03-05 23:21:28 +05303785typedef struct CharDriver {
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003786 const char *name;
Gerd Hoffmann99aec012013-06-24 08:39:52 +02003787 ChardevBackendKind kind;
Gerd Hoffmann2c5f4882013-02-21 11:39:12 +01003788 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
Paolo Bonzini4ca17282015-09-29 14:55:59 +02003789 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3790 ChardevReturn *ret, Error **errp);
Anthony Liguorid654f342013-03-05 23:21:28 +05303791} CharDriver;
3792
3793static GSList *backends;
3794
Peter Maydelle4d50d42014-09-02 11:24:17 +01003795void register_char_driver(const char *name, ChardevBackendKind kind,
Paolo Bonzini4ca17282015-09-29 14:55:59 +02003796 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
3797 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3798 ChardevReturn *ret, Error **errp))
Gerd Hoffmann2c5f4882013-02-21 11:39:12 +01003799{
3800 CharDriver *s;
3801
3802 s = g_malloc0(sizeof(*s));
3803 s->name = g_strdup(name);
3804 s->kind = kind;
3805 s->parse = parse;
Paolo Bonzini4ca17282015-09-29 14:55:59 +02003806 s->create = create;
Gerd Hoffmann2c5f4882013-02-21 11:39:12 +01003807
3808 backends = g_slist_append(backends, s);
3809}
3810
Anthony Liguorif69554b2011-08-15 11:17:37 -05003811CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
Gerd Hoffmannbd2d80b2012-10-15 09:28:05 +02003812 void (*init)(struct CharDriverState *s),
3813 Error **errp)
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003814{
Markus Armbruster0aff6372014-05-19 18:57:35 +02003815 Error *local_err = NULL;
Anthony Liguorid654f342013-03-05 23:21:28 +05303816 CharDriver *cd;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003817 CharDriverState *chr;
Anthony Liguorid654f342013-03-05 23:21:28 +05303818 GSList *i;
Peter Maydella61ae7f2014-09-02 11:24:16 +01003819 ChardevReturn *ret = NULL;
3820 ChardevBackend *backend;
3821 const char *id = qemu_opts_id(opts);
3822 char *bid = NULL;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003823
Peter Maydella61ae7f2014-09-02 11:24:16 +01003824 if (id == NULL) {
Markus Armbruster312fd5f2013-02-08 21:22:16 +01003825 error_setg(errp, "chardev: no id specified");
Gerd Hoffmann2274ae92012-10-15 09:30:59 +02003826 goto err;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003827 }
3828
Stefan Hajnoczi1bbd1852011-01-22 13:07:26 +00003829 if (qemu_opt_get(opts, "backend") == NULL) {
Markus Armbruster312fd5f2013-02-08 21:22:16 +01003830 error_setg(errp, "chardev: \"%s\" missing backend",
Gerd Hoffmannbd2d80b2012-10-15 09:28:05 +02003831 qemu_opts_id(opts));
Gerd Hoffmann2274ae92012-10-15 09:30:59 +02003832 goto err;
Stefan Hajnoczi1bbd1852011-01-22 13:07:26 +00003833 }
Anthony Liguorid654f342013-03-05 23:21:28 +05303834 for (i = backends; i; i = i->next) {
3835 cd = i->data;
3836
3837 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003838 break;
Anthony Liguorid654f342013-03-05 23:21:28 +05303839 }
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003840 }
Anthony Liguorid654f342013-03-05 23:21:28 +05303841 if (i == NULL) {
Markus Armbruster312fd5f2013-02-08 21:22:16 +01003842 error_setg(errp, "chardev: backend \"%s\" not found",
Gerd Hoffmannbd2d80b2012-10-15 09:28:05 +02003843 qemu_opt_get(opts, "backend"));
Gerd Hoffmanne6682872013-06-24 08:39:51 +02003844 goto err;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003845 }
3846
Peter Maydella61ae7f2014-09-02 11:24:16 +01003847 backend = g_new0(ChardevBackend, 1);
Gerd Hoffmann7591c5c2009-09-10 10:58:50 +02003848
3849 if (qemu_opt_get_bool(opts, "mux", 0)) {
Peter Maydella61ae7f2014-09-02 11:24:16 +01003850 bid = g_strdup_printf("%s-base", id);
Gerd Hoffmann7591c5c2009-09-10 10:58:50 +02003851 }
Peter Maydella61ae7f2014-09-02 11:24:16 +01003852
3853 chr = NULL;
Eric Blake130257d2015-10-26 16:34:57 -06003854 backend->type = cd->kind;
Peter Maydella61ae7f2014-09-02 11:24:16 +01003855 if (cd->parse) {
3856 cd->parse(opts, backend, &local_err);
3857 if (local_err) {
3858 error_propagate(errp, local_err);
3859 goto qapi_out;
3860 }
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003861 } else {
3862 ChardevCommon *cc = g_new0(ChardevCommon, 1);
3863 qemu_chr_parse_common(opts, cc);
Eric Blake32bafa82016-03-17 16:48:37 -06003864 backend->u.null.data = cc; /* Any ChardevCommon member would work */
Peter Maydella61ae7f2014-09-02 11:24:16 +01003865 }
Daniel P. Berranged0d77082016-01-11 12:44:41 +00003866
Peter Maydella61ae7f2014-09-02 11:24:16 +01003867 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3868 if (!ret) {
3869 goto qapi_out;
3870 }
3871
3872 if (bid) {
3873 qapi_free_ChardevBackend(backend);
3874 qapi_free_ChardevReturn(ret);
3875 backend = g_new0(ChardevBackend, 1);
Eric Blake32bafa82016-03-17 16:48:37 -06003876 backend->u.mux.data = g_new0(ChardevMux, 1);
Eric Blake130257d2015-10-26 16:34:57 -06003877 backend->type = CHARDEV_BACKEND_KIND_MUX;
Eric Blake32bafa82016-03-17 16:48:37 -06003878 backend->u.mux.data->chardev = g_strdup(bid);
Peter Maydella61ae7f2014-09-02 11:24:16 +01003879 ret = qmp_chardev_add(id, backend, errp);
3880 if (!ret) {
3881 chr = qemu_chr_find(bid);
3882 qemu_chr_delete(chr);
3883 chr = NULL;
3884 goto qapi_out;
3885 }
3886 }
3887
3888 chr = qemu_chr_find(id);
Gerd Hoffmann2274ae92012-10-15 09:30:59 +02003889 chr->opts = opts;
Peter Maydella61ae7f2014-09-02 11:24:16 +01003890
3891qapi_out:
3892 qapi_free_ChardevBackend(backend);
3893 qapi_free_ChardevReturn(ret);
3894 g_free(bid);
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003895 return chr;
Gerd Hoffmann2274ae92012-10-15 09:30:59 +02003896
3897err:
3898 qemu_opts_del(opts);
3899 return NULL;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003900}
3901
Pavel Dovgalyuk33577b42016-03-14 10:44:36 +03003902CharDriverState *qemu_chr_new_noreplay(const char *label, const char *filename,
3903 void (*init)(struct CharDriverState *s))
aliguori6f97dba2008-10-31 18:49:55 +00003904{
3905 const char *p;
3906 CharDriverState *chr;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003907 QemuOpts *opts;
Gerd Hoffmannbd2d80b2012-10-15 09:28:05 +02003908 Error *err = NULL;
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003909
Gerd Hoffmannc845f402009-09-10 10:58:52 +02003910 if (strstart(filename, "chardev:", &p)) {
3911 return qemu_chr_find(p);
3912 }
3913
Gerd Hoffmann191bc012009-09-10 10:58:35 +02003914 opts = qemu_chr_parse_compat(label, filename);
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003915 if (!opts)
3916 return NULL;
aliguori6f97dba2008-10-31 18:49:55 +00003917
Gerd Hoffmannbd2d80b2012-10-15 09:28:05 +02003918 chr = qemu_chr_new_from_opts(opts, init, &err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01003919 if (err) {
Markus Armbruster565f65d2015-02-12 13:55:05 +01003920 error_report_err(err);
Gerd Hoffmannbd2d80b2012-10-15 09:28:05 +02003921 }
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003922 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
Hans de Goede456d6062013-03-27 20:29:40 +01003923 qemu_chr_fe_claim_no_fail(chr);
Gerd Hoffmann7e1b35b2009-09-10 10:58:51 +02003924 monitor_init(chr, MONITOR_USE_READLINE);
aliguori6f97dba2008-10-31 18:49:55 +00003925 }
3926 return chr;
3927}
3928
Pavel Dovgalyuk33577b42016-03-14 10:44:36 +03003929CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3930{
3931 CharDriverState *chr;
3932 chr = qemu_chr_new_noreplay(label, filename, init);
3933 if (chr) {
3934 chr->replay = replay_mode != REPLAY_MODE_NONE;
3935 if (chr->replay && chr->chr_ioctl) {
3936 fprintf(stderr,
3937 "Replay: ioctl is not supported for serial devices yet\n");
3938 }
3939 replay_register_char_driver(chr);
3940 }
3941 return chr;
3942}
3943
Anthony Liguori15f31512011-08-15 11:17:35 -05003944void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
Paolo Bonzinic48855e2010-12-23 13:42:48 +01003945{
3946 if (chr->chr_set_echo) {
3947 chr->chr_set_echo(chr, echo);
3948 }
3949}
3950
Hans de Goede8e25daa2013-03-26 11:07:57 +01003951void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
Hans de Goede7c32c4f2011-03-24 11:12:02 +01003952{
Hans de Goede8e25daa2013-03-26 11:07:57 +01003953 if (chr->fe_open == fe_open) {
Hans de Goedec0c4bd22013-03-26 11:07:55 +01003954 return;
3955 }
Hans de Goede8e25daa2013-03-26 11:07:57 +01003956 chr->fe_open = fe_open;
Hans de Goede574b7112013-03-26 11:07:58 +01003957 if (chr->chr_set_fe_open) {
3958 chr->chr_set_fe_open(chr, fe_open);
Hans de Goede7c32c4f2011-03-24 11:12:02 +01003959 }
3960}
3961
Marc-André Lureaud61b0c92013-12-01 22:23:39 +01003962void qemu_chr_fe_event(struct CharDriverState *chr, int event)
3963{
3964 if (chr->chr_fe_event) {
3965 chr->chr_fe_event(chr, event);
3966 }
3967}
3968
Kevin Wolf2c8a5942013-03-19 13:38:09 +01003969int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3970 GIOFunc func, void *user_data)
Anthony Liguori23673ca2013-03-05 23:21:23 +05303971{
3972 GSource *src;
3973 guint tag;
3974
3975 if (s->chr_add_watch == NULL) {
3976 return -ENOSYS;
3977 }
3978
3979 src = s->chr_add_watch(s, cond);
Paolo Bonzini62c339c2014-07-24 16:08:04 +02003980 if (!src) {
3981 return -EINVAL;
3982 }
3983
Anthony Liguori23673ca2013-03-05 23:21:23 +05303984 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3985 tag = g_source_attach(src, NULL);
3986 g_source_unref(src);
3987
3988 return tag;
3989}
3990
Hans de Goede44c473d2013-03-27 20:29:39 +01003991int qemu_chr_fe_claim(CharDriverState *s)
3992{
3993 if (s->avail_connections < 1) {
3994 return -1;
3995 }
3996 s->avail_connections--;
3997 return 0;
3998}
3999
4000void qemu_chr_fe_claim_no_fail(CharDriverState *s)
4001{
4002 if (qemu_chr_fe_claim(s) != 0) {
4003 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
4004 __func__, s->label);
4005 exit(1);
4006 }
4007}
4008
4009void qemu_chr_fe_release(CharDriverState *s)
4010{
4011 s->avail_connections++;
4012}
4013
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004014static void qemu_chr_free_common(CharDriverState *chr)
4015{
4016 g_free(chr->filename);
4017 g_free(chr->label);
4018 qemu_opts_del(chr->opts);
4019 if (chr->logfd != -1) {
4020 close(chr->logfd);
4021 }
Paolo Bonzinifefd7492016-01-15 16:16:25 +01004022 qemu_mutex_destroy(&chr->chr_write_lock);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004023 g_free(chr);
4024}
4025
Marc-André Lureau1ad78ea2015-06-22 18:20:18 +02004026void qemu_chr_free(CharDriverState *chr)
aliguori6f97dba2008-10-31 18:49:55 +00004027{
Gerd Hoffmann2274ae92012-10-15 09:30:59 +02004028 if (chr->chr_close) {
aliguori6f97dba2008-10-31 18:49:55 +00004029 chr->chr_close(chr);
Gerd Hoffmann2274ae92012-10-15 09:30:59 +02004030 }
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004031 qemu_chr_free_common(chr);
aliguori6f97dba2008-10-31 18:49:55 +00004032}
4033
Marc-André Lureau1ad78ea2015-06-22 18:20:18 +02004034void qemu_chr_delete(CharDriverState *chr)
4035{
4036 QTAILQ_REMOVE(&chardevs, chr, next);
4037 qemu_chr_free(chr);
4038}
4039
Luiz Capitulinoc5a415a2011-09-14 16:05:49 -03004040ChardevInfoList *qmp_query_chardev(Error **errp)
aliguori6f97dba2008-10-31 18:49:55 +00004041{
Luiz Capitulinoc5a415a2011-09-14 16:05:49 -03004042 ChardevInfoList *chr_list = NULL;
aliguori6f97dba2008-10-31 18:49:55 +00004043 CharDriverState *chr;
4044
Blue Swirl72cf2d42009-09-12 07:36:22 +00004045 QTAILQ_FOREACH(chr, &chardevs, next) {
Luiz Capitulinoc5a415a2011-09-14 16:05:49 -03004046 ChardevInfoList *info = g_malloc0(sizeof(*info));
4047 info->value = g_malloc0(sizeof(*info->value));
4048 info->value->label = g_strdup(chr->label);
4049 info->value->filename = g_strdup(chr->filename);
Laszlo Ersek32a97ea2014-06-26 17:50:03 +02004050 info->value->frontend_open = chr->fe_open;
Luiz Capitulinoc5a415a2011-09-14 16:05:49 -03004051
4052 info->next = chr_list;
4053 chr_list = info;
aliguori6f97dba2008-10-31 18:49:55 +00004054 }
Luiz Capitulino588b3832009-12-10 17:16:08 -02004055
Luiz Capitulinoc5a415a2011-09-14 16:05:49 -03004056 return chr_list;
aliguori6f97dba2008-10-31 18:49:55 +00004057}
Gerd Hoffmannc845f402009-09-10 10:58:52 +02004058
Martin Kletzander77d1c3c2014-02-01 12:52:42 +01004059ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
4060{
4061 ChardevBackendInfoList *backend_list = NULL;
4062 CharDriver *c = NULL;
4063 GSList *i = NULL;
4064
4065 for (i = backends; i; i = i->next) {
4066 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
4067 c = i->data;
4068 info->value = g_malloc0(sizeof(*info->value));
4069 info->value->name = g_strdup(c->name);
4070
4071 info->next = backend_list;
4072 backend_list = info;
4073 }
4074
4075 return backend_list;
4076}
4077
Gerd Hoffmannc845f402009-09-10 10:58:52 +02004078CharDriverState *qemu_chr_find(const char *name)
4079{
4080 CharDriverState *chr;
4081
Blue Swirl72cf2d42009-09-12 07:36:22 +00004082 QTAILQ_FOREACH(chr, &chardevs, next) {
Gerd Hoffmannc845f402009-09-10 10:58:52 +02004083 if (strcmp(chr->label, name) != 0)
4084 continue;
4085 return chr;
4086 }
4087 return NULL;
4088}
Anthony Liguori0beb4942011-12-22 15:29:25 -06004089
4090/* Get a character (serial) device interface. */
4091CharDriverState *qemu_char_get_next_serial(void)
4092{
4093 static int next_serial;
Hans de Goede456d6062013-03-27 20:29:40 +01004094 CharDriverState *chr;
Anthony Liguori0beb4942011-12-22 15:29:25 -06004095
4096 /* FIXME: This function needs to go away: use chardev properties! */
Hans de Goede456d6062013-03-27 20:29:40 +01004097
4098 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
4099 chr = serial_hds[next_serial++];
4100 qemu_chr_fe_claim_no_fail(chr);
4101 return chr;
4102 }
4103 return NULL;
Anthony Liguori0beb4942011-12-22 15:29:25 -06004104}
4105
Paolo Bonzini4d454572012-11-26 16:03:42 +01004106QemuOptsList qemu_chardev_opts = {
4107 .name = "chardev",
4108 .implied_opt_name = "backend",
4109 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
4110 .desc = {
4111 {
4112 .name = "backend",
4113 .type = QEMU_OPT_STRING,
4114 },{
4115 .name = "path",
4116 .type = QEMU_OPT_STRING,
4117 },{
4118 .name = "host",
4119 .type = QEMU_OPT_STRING,
4120 },{
4121 .name = "port",
4122 .type = QEMU_OPT_STRING,
4123 },{
4124 .name = "localaddr",
4125 .type = QEMU_OPT_STRING,
4126 },{
4127 .name = "localport",
4128 .type = QEMU_OPT_STRING,
4129 },{
4130 .name = "to",
4131 .type = QEMU_OPT_NUMBER,
4132 },{
4133 .name = "ipv4",
4134 .type = QEMU_OPT_BOOL,
4135 },{
4136 .name = "ipv6",
4137 .type = QEMU_OPT_BOOL,
4138 },{
4139 .name = "wait",
4140 .type = QEMU_OPT_BOOL,
4141 },{
4142 .name = "server",
4143 .type = QEMU_OPT_BOOL,
4144 },{
4145 .name = "delay",
4146 .type = QEMU_OPT_BOOL,
4147 },{
Corey Minyard5dd1f022014-10-02 11:17:37 -05004148 .name = "reconnect",
4149 .type = QEMU_OPT_NUMBER,
4150 },{
Paolo Bonzini4d454572012-11-26 16:03:42 +01004151 .name = "telnet",
4152 .type = QEMU_OPT_BOOL,
4153 },{
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00004154 .name = "tls-creds",
4155 .type = QEMU_OPT_STRING,
4156 },{
Paolo Bonzini4d454572012-11-26 16:03:42 +01004157 .name = "width",
4158 .type = QEMU_OPT_NUMBER,
4159 },{
4160 .name = "height",
4161 .type = QEMU_OPT_NUMBER,
4162 },{
4163 .name = "cols",
4164 .type = QEMU_OPT_NUMBER,
4165 },{
4166 .name = "rows",
4167 .type = QEMU_OPT_NUMBER,
4168 },{
4169 .name = "mux",
4170 .type = QEMU_OPT_BOOL,
4171 },{
4172 .name = "signal",
4173 .type = QEMU_OPT_BOOL,
4174 },{
4175 .name = "name",
4176 .type = QEMU_OPT_STRING,
4177 },{
4178 .name = "debug",
4179 .type = QEMU_OPT_NUMBER,
Lei Li51767e72013-01-25 00:03:19 +08004180 },{
Markus Armbruster3949e592013-02-06 21:27:24 +01004181 .name = "size",
Markus Armbrusterde1cc362013-02-06 21:27:25 +01004182 .type = QEMU_OPT_SIZE,
Gerd Hoffmannbb6fb7c2013-06-24 08:39:54 +02004183 },{
4184 .name = "chardev",
4185 .type = QEMU_OPT_STRING,
Olga Krishtal31e38a22015-12-04 09:42:04 +03004186 },{
4187 .name = "append",
4188 .type = QEMU_OPT_BOOL,
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004189 },{
4190 .name = "logfile",
4191 .type = QEMU_OPT_STRING,
4192 },{
4193 .name = "logappend",
4194 .type = QEMU_OPT_BOOL,
Paolo Bonzini4d454572012-11-26 16:03:42 +01004195 },
4196 { /* end of list */ }
4197 },
4198};
Gerd Hoffmannf1a1a352012-12-19 10:33:56 +01004199
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004200#ifdef _WIN32
4201
Paolo Bonzinifd5b0362015-09-29 15:06:02 +02004202static CharDriverState *qmp_chardev_open_file(const char *id,
4203 ChardevBackend *backend,
4204 ChardevReturn *ret,
4205 Error **errp)
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004206{
Eric Blake32bafa82016-03-17 16:48:37 -06004207 ChardevFile *file = backend->u.file.data;
Eric Blakef194a1a2016-03-03 09:16:47 -07004208 ChardevCommon *common = qapi_ChardevFile_base(file);
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004209 HANDLE out;
4210
Gerd Hoffmanne859eda2013-06-24 08:39:47 +02004211 if (file->has_in) {
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004212 error_setg(errp, "input file not supported");
4213 return NULL;
4214 }
4215
4216 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
4217 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
4218 if (out == INVALID_HANDLE_VALUE) {
4219 error_setg(errp, "open %s failed", file->out);
4220 return NULL;
4221 }
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004222 return qemu_chr_open_win_file(out, common, errp);
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004223}
4224
Paolo Bonzini6511d392015-09-29 15:08:05 +02004225static CharDriverState *qmp_chardev_open_serial(const char *id,
4226 ChardevBackend *backend,
4227 ChardevReturn *ret,
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004228 Error **errp)
Gerd Hoffmannd59044e2012-12-19 13:50:29 +01004229{
Eric Blake32bafa82016-03-17 16:48:37 -06004230 ChardevHostdev *serial = backend->u.serial.data;
Eric Blakef194a1a2016-03-03 09:16:47 -07004231 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004232 return qemu_chr_open_win_path(serial->device, common, errp);
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004233}
4234
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004235#else /* WIN32 */
4236
4237static int qmp_chardev_open_file_source(char *src, int flags,
4238 Error **errp)
4239{
4240 int fd = -1;
4241
4242 TFR(fd = qemu_open(src, flags, 0666));
4243 if (fd == -1) {
Gerd Hoffmann20c39762013-06-24 08:39:48 +02004244 error_setg_file_open(errp, errno, src);
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004245 }
4246 return fd;
4247}
4248
Paolo Bonzinifd5b0362015-09-29 15:06:02 +02004249static CharDriverState *qmp_chardev_open_file(const char *id,
4250 ChardevBackend *backend,
4251 ChardevReturn *ret,
4252 Error **errp)
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004253{
Eric Blake32bafa82016-03-17 16:48:37 -06004254 ChardevFile *file = backend->u.file.data;
Eric Blakef194a1a2016-03-03 09:16:47 -07004255 ChardevCommon *common = qapi_ChardevFile_base(file);
Markus Armbruster5f758362014-05-19 18:57:34 +02004256 int flags, in = -1, out;
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004257
Olga Krishtal31e38a22015-12-04 09:42:04 +03004258 flags = O_WRONLY | O_CREAT | O_BINARY;
4259 if (file->has_append && file->append) {
4260 flags |= O_APPEND;
4261 } else {
4262 flags |= O_TRUNC;
4263 }
4264
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004265 out = qmp_chardev_open_file_source(file->out, flags, errp);
Markus Armbruster5f758362014-05-19 18:57:34 +02004266 if (out < 0) {
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004267 return NULL;
4268 }
4269
Gerd Hoffmanne859eda2013-06-24 08:39:47 +02004270 if (file->has_in) {
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004271 flags = O_RDONLY;
4272 in = qmp_chardev_open_file_source(file->in, flags, errp);
Markus Armbruster5f758362014-05-19 18:57:34 +02004273 if (in < 0) {
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004274 qemu_close(out);
4275 return NULL;
4276 }
4277 }
4278
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004279 return qemu_chr_open_fd(in, out, common, errp);
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004280}
4281
Paolo Bonzinid809ab92015-10-12 09:46:23 +02004282#ifdef HAVE_CHARDEV_SERIAL
Paolo Bonzini6511d392015-09-29 15:08:05 +02004283static CharDriverState *qmp_chardev_open_serial(const char *id,
4284 ChardevBackend *backend,
4285 ChardevReturn *ret,
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004286 Error **errp)
Gerd Hoffmannd59044e2012-12-19 13:50:29 +01004287{
Eric Blake32bafa82016-03-17 16:48:37 -06004288 ChardevHostdev *serial = backend->u.serial.data;
Eric Blakef194a1a2016-03-03 09:16:47 -07004289 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004290 int fd;
4291
4292 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
Markus Armbruster5f758362014-05-19 18:57:34 +02004293 if (fd < 0) {
Gerd Hoffmannd59044e2012-12-19 13:50:29 +01004294 return NULL;
4295 }
Stefan Hajnoczif9e8cac2013-03-27 10:10:43 +01004296 qemu_set_nonblock(fd);
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004297 return qemu_chr_open_tty_fd(fd, common, errp);
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004298}
Paolo Bonzini6511d392015-09-29 15:08:05 +02004299#endif
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004300
Paolo Bonzinid809ab92015-10-12 09:46:23 +02004301#ifdef HAVE_CHARDEV_PARPORT
Paolo Bonzini38bfb1a2015-10-12 09:49:28 +02004302static CharDriverState *qmp_chardev_open_parallel(const char *id,
4303 ChardevBackend *backend,
4304 ChardevReturn *ret,
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004305 Error **errp)
4306{
Eric Blake32bafa82016-03-17 16:48:37 -06004307 ChardevHostdev *parallel = backend->u.parallel.data;
Eric Blakef194a1a2016-03-03 09:16:47 -07004308 ChardevCommon *common = qapi_ChardevHostdev_base(parallel);
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004309 int fd;
4310
4311 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
Markus Armbruster5f758362014-05-19 18:57:34 +02004312 if (fd < 0) {
Markus Armbrusterd36b2b92013-02-13 15:54:16 +01004313 return NULL;
4314 }
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004315 return qemu_chr_open_pp_fd(fd, common, errp);
Gerd Hoffmannd59044e2012-12-19 13:50:29 +01004316}
Paolo Bonzinid809ab92015-10-12 09:46:23 +02004317#endif
Gerd Hoffmannd59044e2012-12-19 13:50:29 +01004318
Gerd Hoffmannffbdbe52012-12-19 13:13:57 +01004319#endif /* WIN32 */
4320
Corey Minyard5dd1f022014-10-02 11:17:37 -05004321static gboolean socket_reconnect_timeout(gpointer opaque)
4322{
4323 CharDriverState *chr = opaque;
4324 TCPCharDriver *s = chr->opaque;
Daniel P. Berrange317856c2016-03-09 16:45:04 +00004325 QIOChannelSocket *sioc;
Corey Minyard5dd1f022014-10-02 11:17:37 -05004326
4327 s->reconnect_timer = 0;
4328
4329 if (chr->be_open) {
4330 return false;
4331 }
4332
Daniel P. Berrange317856c2016-03-09 16:45:04 +00004333 sioc = qio_channel_socket_new();
4334 qio_channel_socket_connect_async(sioc, s->addr,
4335 qemu_chr_socket_connected,
4336 chr, NULL);
Corey Minyard5dd1f022014-10-02 11:17:37 -05004337
4338 return false;
4339}
4340
Paolo Bonzinidbba8d12015-09-29 15:15:53 +02004341static CharDriverState *qmp_chardev_open_socket(const char *id,
4342 ChardevBackend *backend,
4343 ChardevReturn *ret,
Gerd Hoffmannf6bd5d62012-12-20 13:53:12 +01004344 Error **errp)
4345{
Corey Minyard43ded1a2014-10-02 11:17:34 -05004346 CharDriverState *chr;
4347 TCPCharDriver *s;
Eric Blake32bafa82016-03-17 16:48:37 -06004348 ChardevSocket *sock = backend->u.socket.data;
Gerd Hoffmannf6bd5d62012-12-20 13:53:12 +01004349 SocketAddress *addr = sock->addr;
4350 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4351 bool is_listen = sock->has_server ? sock->server : true;
4352 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4353 bool is_waitconnect = sock->has_wait ? sock->wait : false;
Corey Minyard5dd1f022014-10-02 11:17:37 -05004354 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
Eric Blakef194a1a2016-03-03 09:16:47 -07004355 ChardevCommon *common = qapi_ChardevSocket_base(sock);
Daniel P. Berrange317856c2016-03-09 16:45:04 +00004356 QIOChannelSocket *sioc = NULL;
Corey Minyard43ded1a2014-10-02 11:17:34 -05004357
Daniel P. Berranged0d77082016-01-11 12:44:41 +00004358 chr = qemu_chr_alloc(common, errp);
4359 if (!chr) {
4360 return NULL;
4361 }
Markus Armbruster2d528d42015-09-14 13:54:03 +02004362 s = g_new0(TCPCharDriver, 1);
Corey Minyard43ded1a2014-10-02 11:17:34 -05004363
Eric Blake130257d2015-10-26 16:34:57 -06004364 s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
Corey Minyardcfb429c2014-10-02 11:17:35 -05004365 s->is_listen = is_listen;
4366 s->is_telnet = is_telnet;
Corey Minyard43ded1a2014-10-02 11:17:34 -05004367 s->do_nodelay = do_nodelay;
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00004368 if (sock->tls_creds) {
4369 Object *creds;
4370 creds = object_resolve_path_component(
4371 object_get_objects_root(), sock->tls_creds);
4372 if (!creds) {
4373 error_setg(errp, "No TLS credentials with id '%s'",
4374 sock->tls_creds);
4375 goto error;
4376 }
4377 s->tls_creds = (QCryptoTLSCreds *)
4378 object_dynamic_cast(creds,
4379 TYPE_QCRYPTO_TLS_CREDS);
4380 if (!s->tls_creds) {
4381 error_setg(errp, "Object with id '%s' is not TLS credentials",
4382 sock->tls_creds);
4383 goto error;
4384 }
4385 object_ref(OBJECT(s->tls_creds));
4386 if (is_listen) {
4387 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
4388 error_setg(errp, "%s",
4389 "Expected TLS credentials for server endpoint");
4390 goto error;
4391 }
4392 } else {
4393 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
4394 error_setg(errp, "%s",
4395 "Expected TLS credentials for client endpoint");
4396 goto error;
4397 }
4398 }
4399 }
4400
Corey Minyardcfb429c2014-10-02 11:17:35 -05004401 qapi_copy_SocketAddress(&s->addr, sock->addr);
Corey Minyard43ded1a2014-10-02 11:17:34 -05004402
4403 chr->opaque = s;
4404 chr->chr_write = tcp_chr_write;
4405 chr->chr_sync_read = tcp_chr_sync_read;
4406 chr->chr_close = tcp_chr_close;
4407 chr->get_msgfds = tcp_get_msgfds;
4408 chr->set_msgfds = tcp_set_msgfds;
4409 chr->chr_add_client = tcp_chr_add_client;
4410 chr->chr_add_watch = tcp_chr_add_watch;
4411 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4412 /* be isn't opened until we get a connection */
4413 chr->explicit_be_open = true;
4414
Daniel P. Berrange0ff0fad2016-01-19 11:14:28 +00004415 chr->filename = SocketAddress_to_str("disconnected:",
4416 addr, is_listen, is_telnet);
Gerd Hoffmannf6bd5d62012-12-20 13:53:12 +01004417
4418 if (is_listen) {
Corey Minyard43ded1a2014-10-02 11:17:34 -05004419 if (is_telnet) {
4420 s->do_telnetopt = 1;
4421 }
Corey Minyard5dd1f022014-10-02 11:17:37 -05004422 } else if (reconnect > 0) {
4423 s->reconnect_time = reconnect;
Gerd Hoffmannf6bd5d62012-12-20 13:53:12 +01004424 }
Corey Minyard43ded1a2014-10-02 11:17:34 -05004425
Daniel P. Berrange08b758b2016-03-09 16:49:56 +00004426 sioc = qio_channel_socket_new();
Corey Minyard5008e5b2014-10-08 07:11:55 -05004427 if (s->reconnect_time) {
Daniel P. Berrange317856c2016-03-09 16:45:04 +00004428 qio_channel_socket_connect_async(sioc, s->addr,
4429 qemu_chr_socket_connected,
4430 chr, NULL);
Daniel P. Berrange08b758b2016-03-09 16:49:56 +00004431 } else if (s->is_listen) {
4432 if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
4433 goto error;
4434 }
4435 s->listen_ioc = sioc;
4436 if (is_waitconnect) {
4437 fprintf(stderr, "QEMU waiting for connection on: %s\n",
4438 chr->filename);
4439 tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
4440 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00004441 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
Daniel P. Berrange08b758b2016-03-09 16:49:56 +00004442 if (!s->ioc) {
4443 s->listen_tag = qio_channel_add_watch(
4444 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
4445 }
4446 } else {
4447 if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
4448 goto error;
4449 }
4450 tcp_chr_new_client(chr, sioc);
4451 object_unref(OBJECT(sioc));
Corey Minyard43ded1a2014-10-02 11:17:34 -05004452 }
4453
4454 return chr;
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00004455
4456 error:
Daniel P. Berrange08b758b2016-03-09 16:49:56 +00004457 if (sioc) {
4458 object_unref(OBJECT(sioc));
4459 }
Daniel P. Berrangea8fb5422016-01-19 11:14:31 +00004460 if (s->tls_creds) {
4461 object_unref(OBJECT(s->tls_creds));
4462 }
4463 g_free(s);
4464 qemu_chr_free_common(chr);
4465 return NULL;
Gerd Hoffmannf6bd5d62012-12-20 13:53:12 +01004466}
4467
Paolo Bonzinie79b80d2015-09-29 15:17:20 +02004468static CharDriverState *qmp_chardev_open_udp(const char *id,
4469 ChardevBackend *backend,
4470 ChardevReturn *ret,
Lei Li08d0ab32013-05-20 14:51:03 +08004471 Error **errp)
Gerd Hoffmann3ecc0592013-02-27 14:10:47 +01004472{
Eric Blake32bafa82016-03-17 16:48:37 -06004473 ChardevUdp *udp = backend->u.udp.data;
Eric Blakef194a1a2016-03-03 09:16:47 -07004474 ChardevCommon *common = qapi_ChardevUdp_base(udp);
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00004475 QIOChannelSocket *sioc = qio_channel_socket_new();
Gerd Hoffmann3ecc0592013-02-27 14:10:47 +01004476
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00004477 if (qio_channel_socket_dgram_sync(sioc,
Paolo Bonzini150dcd12016-02-09 11:59:15 +01004478 udp->local, udp->remote,
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00004479 errp) < 0) {
4480 object_unref(OBJECT(sioc));
Gerd Hoffmann3ecc0592013-02-27 14:10:47 +01004481 return NULL;
4482 }
Daniel P. Berrange9894dc02016-01-19 11:14:29 +00004483 return qemu_chr_open_udp(sioc, common, errp);
Gerd Hoffmann3ecc0592013-02-27 14:10:47 +01004484}
4485
Gerd Hoffmannf1a1a352012-12-19 10:33:56 +01004486ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4487 Error **errp)
4488{
4489 ChardevReturn *ret = g_new0(ChardevReturn, 1);
Paolo Bonzini3c0e5a42015-09-29 15:27:24 +02004490 CharDriverState *chr = NULL;
Paolo Bonzinieaeba652015-09-29 14:54:05 +02004491 Error *local_err = NULL;
Paolo Bonzini4ca17282015-09-29 14:55:59 +02004492 GSList *i;
4493 CharDriver *cd;
Gerd Hoffmannf1a1a352012-12-19 10:33:56 +01004494
4495 chr = qemu_chr_find(id);
4496 if (chr) {
4497 error_setg(errp, "Chardev '%s' already exists", id);
4498 g_free(ret);
4499 return NULL;
4500 }
4501
Paolo Bonzini4ca17282015-09-29 14:55:59 +02004502 for (i = backends; i; i = i->next) {
4503 cd = i->data;
4504
Eric Blake130257d2015-10-26 16:34:57 -06004505 if (cd->kind == backend->type) {
Paolo Bonzini4ca17282015-09-29 14:55:59 +02004506 chr = cd->create(id, backend, ret, &local_err);
4507 if (local_err) {
4508 error_propagate(errp, local_err);
4509 goto out_error;
4510 }
Gerd Hoffmannedb2fb32013-02-21 16:16:42 +01004511 break;
4512 }
Gerd Hoffmannf1a1a352012-12-19 10:33:56 +01004513 }
4514
Paolo Bonzinieaeba652015-09-29 14:54:05 +02004515 if (chr == NULL) {
Paolo Bonzini1c3af0f2015-10-12 09:51:41 +02004516 assert(!i);
4517 error_setg(errp, "chardev backend not available");
4518 goto out_error;
Gerd Hoffmannf1a1a352012-12-19 10:33:56 +01004519 }
Paolo Bonzinieaeba652015-09-29 14:54:05 +02004520
4521 chr->label = g_strdup(id);
4522 chr->avail_connections =
Eric Blake130257d2015-10-26 16:34:57 -06004523 (backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
Paolo Bonzinieaeba652015-09-29 14:54:05 +02004524 if (!chr->filename) {
Eric Blake130257d2015-10-26 16:34:57 -06004525 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]);
Paolo Bonzinieaeba652015-09-29 14:54:05 +02004526 }
4527 if (!chr->explicit_be_open) {
4528 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4529 }
4530 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4531 return ret;
4532
4533out_error:
4534 g_free(ret);
4535 return NULL;
Gerd Hoffmannf1a1a352012-12-19 10:33:56 +01004536}
4537
4538void qmp_chardev_remove(const char *id, Error **errp)
4539{
4540 CharDriverState *chr;
4541
4542 chr = qemu_chr_find(id);
Gonglei8108fd32014-08-11 21:00:55 +08004543 if (chr == NULL) {
Gerd Hoffmannf1a1a352012-12-19 10:33:56 +01004544 error_setg(errp, "Chardev '%s' not found", id);
4545 return;
4546 }
4547 if (chr->chr_can_read || chr->chr_read ||
4548 chr->chr_event || chr->handler_opaque) {
4549 error_setg(errp, "Chardev '%s' is busy", id);
4550 return;
4551 }
Pavel Dovgalyuk33577b42016-03-14 10:44:36 +03004552 if (chr->replay) {
4553 error_setg(errp,
4554 "Chardev '%s' cannot be unplugged in record/replay mode", id);
4555 return;
4556 }
Gerd Hoffmannf1a1a352012-12-19 10:33:56 +01004557 qemu_chr_delete(chr);
4558}
Anthony Liguorid654f342013-03-05 23:21:28 +05304559
4560static void register_types(void)
4561{
Paolo Bonzini4ca17282015-09-29 14:55:59 +02004562 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
Paolo Bonzini0d649922015-09-29 15:24:29 +02004563 qemu_chr_open_null);
Peter Maydelle4d50d42014-09-02 11:24:17 +01004564 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
Paolo Bonzinidbba8d12015-09-29 15:15:53 +02004565 qemu_chr_parse_socket, qmp_chardev_open_socket);
Paolo Bonzini4ca17282015-09-29 14:55:59 +02004566 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
Paolo Bonzinie79b80d2015-09-29 15:17:20 +02004567 qmp_chardev_open_udp);
Peter Maydelle4d50d42014-09-02 11:24:17 +01004568 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
Paolo Bonzini479f09a2015-09-29 15:51:14 +02004569 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
Peter Maydelle4d50d42014-09-02 11:24:17 +01004570 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
Paolo Bonzinifd5b0362015-09-29 15:06:02 +02004571 qemu_chr_parse_file_out, qmp_chardev_open_file);
Peter Maydelle4d50d42014-09-02 11:24:17 +01004572 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
Paolo Bonzini8c84b252015-09-29 15:40:28 +02004573 qemu_chr_parse_stdio, qemu_chr_open_stdio);
Paolo Bonzini6511d392015-09-29 15:08:05 +02004574#if defined HAVE_CHARDEV_SERIAL
Peter Maydelle4d50d42014-09-02 11:24:17 +01004575 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
Paolo Bonzini6511d392015-09-29 15:08:05 +02004576 qemu_chr_parse_serial, qmp_chardev_open_serial);
Peter Maydelle4d50d42014-09-02 11:24:17 +01004577 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
Paolo Bonzini6511d392015-09-29 15:08:05 +02004578 qemu_chr_parse_serial, qmp_chardev_open_serial);
4579#endif
Paolo Bonzini38bfb1a2015-10-12 09:49:28 +02004580#ifdef HAVE_CHARDEV_PARPORT
Peter Maydelle4d50d42014-09-02 11:24:17 +01004581 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
Paolo Bonzini38bfb1a2015-10-12 09:49:28 +02004582 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
Peter Maydelle4d50d42014-09-02 11:24:17 +01004583 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
Paolo Bonzini38bfb1a2015-10-12 09:49:28 +02004584 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4585#endif
Paolo Bonzinic2e75a42015-09-29 15:23:42 +02004586#ifdef HAVE_CHARDEV_PTY
Paolo Bonzini4ca17282015-09-29 14:55:59 +02004587 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
Paolo Bonzinic2e75a42015-09-29 15:23:42 +02004588 qemu_chr_open_pty);
4589#endif
Paolo Bonzini122e5ed2015-09-29 15:42:04 +02004590#ifdef _WIN32
Paolo Bonzini4ca17282015-09-29 14:55:59 +02004591 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
Paolo Bonzini122e5ed2015-09-29 15:42:04 +02004592 qemu_chr_open_win_con);
4593#endif
Peter Maydelle4d50d42014-09-02 11:24:17 +01004594 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
Paolo Bonzini20cbe7a2015-09-29 15:14:07 +02004595 qemu_chr_parse_pipe, qemu_chr_open_pipe);
Paolo Bonzini4ca17282015-09-29 14:55:59 +02004596 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
Paolo Bonzini3c0e5a42015-09-29 15:27:24 +02004597 qemu_chr_open_mux);
Markus Armbrusterc11ed962013-07-26 16:44:33 +02004598 /* Bug-compatibility: */
Peter Maydelle4d50d42014-09-02 11:24:17 +01004599 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
Paolo Bonzini479f09a2015-09-29 15:51:14 +02004600 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
Michael Roth7b7ab182013-07-30 13:04:22 -05004601 /* this must be done after machine init, since we register FEs with muxes
4602 * as part of realize functions like serial_isa_realizefn when -nographic
4603 * is specified
4604 */
4605 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
Anthony Liguorid654f342013-03-05 23:21:28 +05304606}
4607
4608type_init(register_types);